From patchwork Thu Mar 22 21:58:32 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 889664 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=vivier.eu Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 406gc83Byyz9s0y for ; Fri, 23 Mar 2018 09:01:28 +1100 (AEDT) Received: from localhost ([::1]:35061 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ez8Gz-0005ux-KS for incoming@patchwork.ozlabs.org; Thu, 22 Mar 2018 18:01:25 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53374) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ez8FD-0004rI-CU for qemu-devel@nongnu.org; Thu, 22 Mar 2018 17:59:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ez8Eu-0004JS-Mt for qemu-devel@nongnu.org; Thu, 22 Mar 2018 17:59:35 -0400 Received: from mout.kundenserver.de ([217.72.192.73]:37657) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1ez8Et-0004H7-3J for qemu-devel@nongnu.org; Thu, 22 Mar 2018 17:59:16 -0400 Received: from localhost.localdomain ([78.238.229.36]) by mrelayeu.kundenserver.de (mreue102 [212.227.15.183]) with ESMTPSA (Nemesis) id 0LhNVA-1eCr7E1sOG-00mao0; Thu, 22 Mar 2018 22:59:05 +0100 From: Laurent Vivier To: qemu-devel@nongnu.org Date: Thu, 22 Mar 2018 22:58:32 +0100 Message-Id: <20180322215833.7713-5-laurent@vivier.eu> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180322215833.7713-1-laurent@vivier.eu> References: <20180322215833.7713-1-laurent@vivier.eu> X-Provags-ID: V03:K0:0ln59myElsQROcT2yIoGHBOszwaUiGFxy15XkTUd+WCvfhRXTEs AMAXoMqc0qh2/Hxluq/k09+zjFVslVyt0Uvtpeg4GBy3zqCAOcZ0UroMj7R156p/w5wX8KA T3zpOutIBM60vtccNHuWTOYmzDt7ZD9vcvlr96A/k1cnS0hQW9G8sdFIvw2bbeEq7EK4H/3 Hu2gYyLutIWt4JA+kbmEg== X-UI-Out-Filterresults: notjunk:1; V01:K0:7VaosJb+C18=:rNzTSqVkpeFPQVymcxEh1P vdpEXlAiOsKdgBaqk1BbYrHCh12b9wHO6Q4C3qeIWmWR8CXYPN4tXXydWtOk/7TXrdqMr/vU0 HUEuJRKGIv/coeFg+IHBlKkfvciThoP4zOb5eBeevKlS7dXtVBqcrH6c4/kLBKP/htQYN+9b/ TGSHhsEqXpI3GjP0lwRraNKbYFO0OqSf5f6EYetul41AMErWUxc8kZz5RiH6LiMMXW3dVhKGa yAqot+gp4u0AvwfPj+3INnb/+cT6E75x0tWeJQv0gmHQcXYMcmkMQVY1VKI/c7pW5yJyK5RKQ s7W+Vvr316kP7wkXshgZWer7nSnsdAkfBbbpPgYlNKFSZSs82G1YA+7vL/Xt/faBrts4y1eMb 9V0qgY6HQWCEbsFx7+JL4so87xMK0wqNVcmH/2NUuBpItYWOL5dIz8+SmJzlMn1iSCGgGF5Sa tVMnjaD3wDKeKN6AZg362LqRSzUMCW3UuHjFVFE5UFX2D95cxeEB3EYnxy5bCgcqBJrxGVg4J DAZFvV24Ru4/qpcYNvL8HRR4mcqlx80OvIW8D0x2LxAjXEjuKU8B1eJvziK+y974Ib0k1wpK8 FxIvRMH7w/wmJfEvGHm1Ltg1NoEtVxM4t9gAza1qfslmsSGrnTvC+HINHcCAZWNNWDYHrU4D6 KIIBL+u+iKaXgk9M4Ub9G2YaUdNTb+P1fG6mcpe+iQ2qFjoAT89O2MUL/1/dBfThg5iHxakCw G82AE3lP1hAjUJWq X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 217.72.192.73 Subject: [Qemu-devel] [PATCH for 2.13 4/5] linux-user: cleanup cpu_loop() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Riku Voipio , Laurent Vivier Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" move all target specific cpu_loop parts to cpu_loop.inc.c in arch directory Signed-off-by: Laurent Vivier Reviewed-by: Philippe Mathieu-Daudé --- linux-user/aarch64/cpu_loop.inc.c | 1 + linux-user/alpha/cpu_loop.inc.c | 191 ++ linux-user/arm/cpu_loop.inc.c | 488 +++++ linux-user/cris/cpu_loop.inc.c | 67 + linux-user/hppa/cpu_loop.inc.c | 178 ++ linux-user/i386/cpu_loop.inc.c | 229 ++ linux-user/m68k/cpu_loop.inc.c | 115 + linux-user/main.c | 3918 +--------------------------------- linux-user/microblaze/cpu_loop.inc.c | 116 + linux-user/mips/cpu_loop.inc.c | 695 ++++++ linux-user/mips64/cpu_loop.inc.c | 1 + linux-user/nios2/cpu_loop.inc.c | 98 + linux-user/openrisc/cpu_loop.inc.c | 81 + linux-user/ppc/cpu_loop.inc.c | 538 +++++ linux-user/riscv/cpu_loop.inc.c | 89 + linux-user/s390x/cpu_loop.inc.c | 132 ++ linux-user/sh4/cpu_loop.inc.c | 78 + linux-user/sparc/cpu_loop.inc.c | 271 +++ linux-user/sparc64/cpu_loop.inc.c | 1 + linux-user/tilegx/cpu_loop.inc.c | 251 +++ linux-user/x86_64/cpu_loop.inc.c | 1 + linux-user/xtensa/cpu_loop.inc.c | 231 ++ 22 files changed, 3853 insertions(+), 3917 deletions(-) create mode 100644 linux-user/aarch64/cpu_loop.inc.c create mode 100644 linux-user/alpha/cpu_loop.inc.c create mode 100644 linux-user/arm/cpu_loop.inc.c create mode 100644 linux-user/cris/cpu_loop.inc.c create mode 100644 linux-user/hppa/cpu_loop.inc.c create mode 100644 linux-user/i386/cpu_loop.inc.c create mode 100644 linux-user/m68k/cpu_loop.inc.c create mode 100644 linux-user/microblaze/cpu_loop.inc.c create mode 100644 linux-user/mips/cpu_loop.inc.c create mode 100644 linux-user/mips64/cpu_loop.inc.c create mode 100644 linux-user/nios2/cpu_loop.inc.c create mode 100644 linux-user/openrisc/cpu_loop.inc.c create mode 100644 linux-user/ppc/cpu_loop.inc.c create mode 100644 linux-user/riscv/cpu_loop.inc.c create mode 100644 linux-user/s390x/cpu_loop.inc.c create mode 100644 linux-user/sh4/cpu_loop.inc.c create mode 100644 linux-user/sparc/cpu_loop.inc.c create mode 100644 linux-user/sparc64/cpu_loop.inc.c create mode 100644 linux-user/tilegx/cpu_loop.inc.c create mode 100644 linux-user/x86_64/cpu_loop.inc.c create mode 100644 linux-user/xtensa/cpu_loop.inc.c diff --git a/linux-user/aarch64/cpu_loop.inc.c b/linux-user/aarch64/cpu_loop.inc.c new file mode 100644 index 0000000000..a9a57861e7 --- /dev/null +++ b/linux-user/aarch64/cpu_loop.inc.c @@ -0,0 +1 @@ +#include "../arm/cpu_loop.inc.c" diff --git a/linux-user/alpha/cpu_loop.inc.c b/linux-user/alpha/cpu_loop.inc.c new file mode 100644 index 0000000000..e9426bdb1a --- /dev/null +++ b/linux-user/alpha/cpu_loop.inc.c @@ -0,0 +1,191 @@ +void cpu_loop(CPUAlphaState *env) +{ + CPUState *cs = CPU(alpha_env_get_cpu(env)); + int trapnr; + target_siginfo_t info; + abi_long sysret; + + while (1) { + bool arch_interrupt = true; + + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch (trapnr) { + case EXCP_RESET: + fprintf(stderr, "Reset requested. Exit\n"); + exit(EXIT_FAILURE); + break; + case EXCP_MCHK: + fprintf(stderr, "Machine check exception. Exit\n"); + exit(EXIT_FAILURE); + break; + case EXCP_SMP_INTERRUPT: + case EXCP_CLK_INTERRUPT: + case EXCP_DEV_INTERRUPT: + fprintf(stderr, "External interrupt. Exit\n"); + exit(EXIT_FAILURE); + break; + case EXCP_MMFAULT: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = (page_get_flags(env->trap_arg0) & PAGE_VALID + ? TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR); + info._sifields._sigfault._addr = env->trap_arg0; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_UNALIGN: + info.si_signo = TARGET_SIGBUS; + info.si_errno = 0; + info.si_code = TARGET_BUS_ADRALN; + info._sifields._sigfault._addr = env->trap_arg0; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_OPCDEC: + do_sigill: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPC; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_ARITH: + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + info.si_code = TARGET_FPE_FLTINV; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_FEN: + /* No-op. Linux simply re-enables the FPU. */ + break; + case EXCP_CALL_PAL: + switch (env->error_code) { + case 0x80: + /* BPT */ + info.si_signo = TARGET_SIGTRAP; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case 0x81: + /* BUGCHK */ + info.si_signo = TARGET_SIGTRAP; + info.si_errno = 0; + info.si_code = 0; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case 0x83: + /* CALLSYS */ + trapnr = env->ir[IR_V0]; + sysret = do_syscall(env, trapnr, + env->ir[IR_A0], env->ir[IR_A1], + env->ir[IR_A2], env->ir[IR_A3], + env->ir[IR_A4], env->ir[IR_A5], + 0, 0); + if (sysret == -TARGET_ERESTARTSYS) { + env->pc -= 4; + break; + } + if (sysret == -TARGET_QEMU_ESIGRETURN) { + break; + } + /* Syscall writes 0 to V0 to bypass error check, similar + to how this is handled internal to Linux kernel. + (Ab)use trapnr temporarily as boolean indicating error. */ + trapnr = (env->ir[IR_V0] != 0 && sysret < 0); + env->ir[IR_V0] = (trapnr ? -sysret : sysret); + env->ir[IR_A3] = trapnr; + break; + case 0x86: + /* IMB */ + /* ??? We can probably elide the code using page_unprotect + that is checking for self-modifying code. Instead we + could simply call tb_flush here. Until we work out the + changes required to turn off the extra write protection, + this can be a no-op. */ + break; + case 0x9E: + /* RDUNIQUE */ + /* Handled in the translator for usermode. */ + abort(); + case 0x9F: + /* WRUNIQUE */ + /* Handled in the translator for usermode. */ + abort(); + case 0xAA: + /* GENTRAP */ + info.si_signo = TARGET_SIGFPE; + switch (env->ir[IR_A0]) { + case TARGET_GEN_INTOVF: + info.si_code = TARGET_FPE_INTOVF; + break; + case TARGET_GEN_INTDIV: + info.si_code = TARGET_FPE_INTDIV; + break; + case TARGET_GEN_FLTOVF: + info.si_code = TARGET_FPE_FLTOVF; + break; + case TARGET_GEN_FLTUND: + info.si_code = TARGET_FPE_FLTUND; + break; + case TARGET_GEN_FLTINV: + info.si_code = TARGET_FPE_FLTINV; + break; + case TARGET_GEN_FLTINE: + info.si_code = TARGET_FPE_FLTRES; + break; + case TARGET_GEN_ROPRAND: + info.si_code = 0; + break; + default: + info.si_signo = TARGET_SIGTRAP; + info.si_code = 0; + break; + } + info.si_errno = 0; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + default: + goto do_sigill; + } + break; + case EXCP_DEBUG: + info.si_signo = gdb_handlesig(cs, TARGET_SIGTRAP); + if (info.si_signo) { + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } else { + arch_interrupt = false; + } + break; + case EXCP_INTERRUPT: + /* Just indicate that signals should be handled asap. */ + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + arch_interrupt = false; + break; + default: + printf ("Unhandled trap: 0x%x\n", trapnr); + cpu_dump_state(cs, stderr, fprintf, 0); + exit(EXIT_FAILURE); + } + process_pending_signals (env); + + /* Most of the traps imply a transition through PALcode, which + implies an REI instruction has been executed. Which means + that RX and LOCK_ADDR should be cleared. But there are a + few exceptions for traps internal to QEMU. */ + if (arch_interrupt) { + env->flags &= ~ENV_FLAG_RX_FLAG; + env->lock_addr = -1; + } + } +} diff --git a/linux-user/arm/cpu_loop.inc.c b/linux-user/arm/cpu_loop.inc.c new file mode 100644 index 0000000000..887381d6bd --- /dev/null +++ b/linux-user/arm/cpu_loop.inc.c @@ -0,0 +1,488 @@ +#define get_user_code_u32(x, gaddr, env) \ + ({ abi_long __r = get_user_u32((x), (gaddr)); \ + if (!__r && bswap_code(arm_sctlr_b(env))) { \ + (x) = bswap32(x); \ + } \ + __r; \ + }) + +#define get_user_code_u16(x, gaddr, env) \ + ({ abi_long __r = get_user_u16((x), (gaddr)); \ + if (!__r && bswap_code(arm_sctlr_b(env))) { \ + (x) = bswap16(x); \ + } \ + __r; \ + }) + +#define get_user_data_u32(x, gaddr, env) \ + ({ abi_long __r = get_user_u32((x), (gaddr)); \ + if (!__r && arm_cpu_bswap_data(env)) { \ + (x) = bswap32(x); \ + } \ + __r; \ + }) + +#define get_user_data_u16(x, gaddr, env) \ + ({ abi_long __r = get_user_u16((x), (gaddr)); \ + if (!__r && arm_cpu_bswap_data(env)) { \ + (x) = bswap16(x); \ + } \ + __r; \ + }) + +#define put_user_data_u32(x, gaddr, env) \ + ({ typeof(x) __x = (x); \ + if (arm_cpu_bswap_data(env)) { \ + __x = bswap32(__x); \ + } \ + put_user_u32(__x, (gaddr)); \ + }) + +#define put_user_data_u16(x, gaddr, env) \ + ({ typeof(x) __x = (x); \ + if (arm_cpu_bswap_data(env)) { \ + __x = bswap16(__x); \ + } \ + put_user_u16(__x, (gaddr)); \ + }) + +#ifdef TARGET_ABI32 +/* Commpage handling -- there is no commpage for AArch64 */ + +/* + * See the Linux kernel's Documentation/arm/kernel_user_helpers.txt + * Input: + * r0 = pointer to oldval + * r1 = pointer to newval + * r2 = pointer to target value + * + * Output: + * r0 = 0 if *ptr was changed, non-0 if no exchange happened + * C set if *ptr was changed, clear if no exchange happened + * + * Note segv's in kernel helpers are a bit tricky, we can set the + * data address sensibly but the PC address is just the entry point. + */ +static void arm_kernel_cmpxchg64_helper(CPUARMState *env) +{ + uint64_t oldval, newval, val; + uint32_t addr, cpsr; + target_siginfo_t info; + + /* Based on the 32 bit code in do_kernel_trap */ + + /* XXX: This only works between threads, not between processes. + It's probably possible to implement this with native host + operations. However things like ldrex/strex are much harder so + there's not much point trying. */ + start_exclusive(); + cpsr = cpsr_read(env); + addr = env->regs[2]; + + if (get_user_u64(oldval, env->regs[0])) { + env->exception.vaddress = env->regs[0]; + goto segv; + }; + + if (get_user_u64(newval, env->regs[1])) { + env->exception.vaddress = env->regs[1]; + goto segv; + }; + + if (get_user_u64(val, addr)) { + env->exception.vaddress = addr; + goto segv; + } + + if (val == oldval) { + val = newval; + + if (put_user_u64(val, addr)) { + env->exception.vaddress = addr; + goto segv; + }; + + env->regs[0] = 0; + cpsr |= CPSR_C; + } else { + env->regs[0] = -1; + cpsr &= ~CPSR_C; + } + cpsr_write(env, cpsr, CPSR_C, CPSRWriteByInstr); + end_exclusive(); + return; + +segv: + end_exclusive(); + /* We get the PC of the entry address - which is as good as anything, + on a real kernel what you get depends on which mode it uses. */ + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->exception.vaddress; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); +} + +/* Handle a jump to the kernel code page. */ +static int +do_kernel_trap(CPUARMState *env) +{ + uint32_t addr; + uint32_t cpsr; + uint32_t val; + + switch (env->regs[15]) { + case 0xffff0fa0: /* __kernel_memory_barrier */ + /* ??? No-op. Will need to do better for SMP. */ + break; + case 0xffff0fc0: /* __kernel_cmpxchg */ + /* XXX: This only works between threads, not between processes. + It's probably possible to implement this with native host + operations. However things like ldrex/strex are much harder so + there's not much point trying. */ + start_exclusive(); + cpsr = cpsr_read(env); + addr = env->regs[2]; + /* FIXME: This should SEGV if the access fails. */ + if (get_user_u32(val, addr)) + val = ~env->regs[0]; + if (val == env->regs[0]) { + val = env->regs[1]; + /* FIXME: Check for segfaults. */ + put_user_u32(val, addr); + env->regs[0] = 0; + cpsr |= CPSR_C; + } else { + env->regs[0] = -1; + cpsr &= ~CPSR_C; + } + cpsr_write(env, cpsr, CPSR_C, CPSRWriteByInstr); + end_exclusive(); + break; + case 0xffff0fe0: /* __kernel_get_tls */ + env->regs[0] = cpu_get_tls(env); + break; + case 0xffff0f60: /* __kernel_cmpxchg64 */ + arm_kernel_cmpxchg64_helper(env); + break; + + default: + return 1; + } + /* Jump back to the caller. */ + addr = env->regs[14]; + if (addr & 1) { + env->thumb = 1; + addr &= ~1; + } + env->regs[15] = addr; + + return 0; +} + +void cpu_loop(CPUARMState *env) +{ + CPUState *cs = CPU(arm_env_get_cpu(env)); + int trapnr; + unsigned int n, insn; + target_siginfo_t info; + uint32_t addr; + abi_ulong ret; + + for(;;) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch(trapnr) { + case EXCP_UDEF: + case EXCP_NOCP: + case EXCP_INVSTATE: + { + TaskState *ts = cs->opaque; + uint32_t opcode; + int rc; + + /* we handle the FPU emulation here, as Linux */ + /* we get the opcode */ + /* FIXME - what to do if get_user() fails? */ + get_user_code_u32(opcode, env->regs[15], env); + + rc = EmulateAll(opcode, &ts->fpa, env); + if (rc == 0) { /* illegal instruction */ + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->regs[15]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } else if (rc < 0) { /* FP exception */ + int arm_fpe=0; + + /* translate softfloat flags to FPSR flags */ + if (-rc & float_flag_invalid) + arm_fpe |= BIT_IOC; + if (-rc & float_flag_divbyzero) + arm_fpe |= BIT_DZC; + if (-rc & float_flag_overflow) + arm_fpe |= BIT_OFC; + if (-rc & float_flag_underflow) + arm_fpe |= BIT_UFC; + if (-rc & float_flag_inexact) + arm_fpe |= BIT_IXC; + + FPSR fpsr = ts->fpa.fpsr; + //printf("fpsr 0x%x, arm_fpe 0x%x\n",fpsr,arm_fpe); + + if (fpsr & (arm_fpe << 16)) { /* exception enabled? */ + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + + /* ordered by priority, least first */ + if (arm_fpe & BIT_IXC) info.si_code = TARGET_FPE_FLTRES; + if (arm_fpe & BIT_UFC) info.si_code = TARGET_FPE_FLTUND; + if (arm_fpe & BIT_OFC) info.si_code = TARGET_FPE_FLTOVF; + if (arm_fpe & BIT_DZC) info.si_code = TARGET_FPE_FLTDIV; + if (arm_fpe & BIT_IOC) info.si_code = TARGET_FPE_FLTINV; + + info._sifields._sigfault._addr = env->regs[15]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } else { + env->regs[15] += 4; + } + + /* accumulate unenabled exceptions */ + if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC)) + fpsr |= BIT_IXC; + if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC)) + fpsr |= BIT_UFC; + if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC)) + fpsr |= BIT_OFC; + if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC)) + fpsr |= BIT_DZC; + if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC)) + fpsr |= BIT_IOC; + ts->fpa.fpsr=fpsr; + } else { /* everything OK */ + /* increment PC */ + env->regs[15] += 4; + } + } + break; + case EXCP_SWI: + case EXCP_BKPT: + { + env->eabi = 1; + /* system call */ + if (trapnr == EXCP_BKPT) { + if (env->thumb) { + /* FIXME - what to do if get_user() fails? */ + get_user_code_u16(insn, env->regs[15], env); + n = insn & 0xff; + env->regs[15] += 2; + } else { + /* FIXME - what to do if get_user() fails? */ + get_user_code_u32(insn, env->regs[15], env); + n = (insn & 0xf) | ((insn >> 4) & 0xff0); + env->regs[15] += 4; + } + } else { + if (env->thumb) { + /* FIXME - what to do if get_user() fails? */ + get_user_code_u16(insn, env->regs[15] - 2, env); + n = insn & 0xff; + } else { + /* FIXME - what to do if get_user() fails? */ + get_user_code_u32(insn, env->regs[15] - 4, env); + n = insn & 0xffffff; + } + } + + if (n == ARM_NR_cacheflush) { + /* nop */ + } else if (n == ARM_NR_semihosting + || n == ARM_NR_thumb_semihosting) { + env->regs[0] = do_arm_semihosting (env); + } else if (n == 0 || n >= ARM_SYSCALL_BASE || env->thumb) { + /* linux syscall */ + if (env->thumb || n == 0) { + n = env->regs[7]; + } else { + n -= ARM_SYSCALL_BASE; + env->eabi = 0; + } + if ( n > ARM_NR_BASE) { + switch (n) { + case ARM_NR_cacheflush: + /* nop */ + break; + case ARM_NR_set_tls: + cpu_set_tls(env, env->regs[0]); + env->regs[0] = 0; + break; + case ARM_NR_breakpoint: + env->regs[15] -= env->thumb ? 2 : 4; + goto excp_debug; + default: + gemu_log("qemu: Unsupported ARM syscall: 0x%x\n", + n); + env->regs[0] = -TARGET_ENOSYS; + break; + } + } else { + ret = do_syscall(env, + n, + env->regs[0], + env->regs[1], + env->regs[2], + env->regs[3], + env->regs[4], + env->regs[5], + 0, 0); + if (ret == -TARGET_ERESTARTSYS) { + env->regs[15] -= env->thumb ? 2 : 4; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + env->regs[0] = ret; + } + } + } else { + goto error; + } + } + break; + case EXCP_SEMIHOST: + env->regs[0] = do_arm_semihosting(env); + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_PREFETCH_ABORT: + case EXCP_DATA_ABORT: + addr = env->exception.vaddress; + { + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = addr; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP_DEBUG: + excp_debug: + { + int sig; + + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) + { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + } + break; + case EXCP_KERNEL_TRAP: + if (do_kernel_trap(env)) + goto error; + break; + case EXCP_YIELD: + /* nothing to do here for user-mode, just resume guest code */ + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: + error: + EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); + abort(); + } + process_pending_signals(env); + } +} + +#else + +/* AArch64 main loop */ +void cpu_loop(CPUARMState *env) +{ + CPUState *cs = CPU(arm_env_get_cpu(env)); + int trapnr, sig; + abi_long ret; + target_siginfo_t info; + + for (;;) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch (trapnr) { + case EXCP_SWI: + ret = do_syscall(env, + env->xregs[8], + env->xregs[0], + env->xregs[1], + env->xregs[2], + env->xregs[3], + env->xregs[4], + env->xregs[5], + 0, 0); + if (ret == -TARGET_ERESTARTSYS) { + env->pc -= 4; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + env->xregs[0] = ret; + } + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_UDEF: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_PREFETCH_ABORT: + case EXCP_DATA_ABORT: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->exception.vaddress; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_DEBUG: + case EXCP_BKPT: + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP_SEMIHOST: + env->xregs[0] = do_arm_semihosting(env); + break; + case EXCP_YIELD: + /* nothing to do here for user-mode, just resume guest code */ + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: + EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); + abort(); + } + process_pending_signals(env); + /* Exception return on AArch64 always clears the exclusive monitor, + * so any return to running guest code implies this. + */ + env->exclusive_addr = -1; + } +} +#endif /* ndef TARGET_ABI32 */ diff --git a/linux-user/cris/cpu_loop.inc.c b/linux-user/cris/cpu_loop.inc.c new file mode 100644 index 0000000000..e5fc51922d --- /dev/null +++ b/linux-user/cris/cpu_loop.inc.c @@ -0,0 +1,67 @@ +void cpu_loop(CPUCRISState *env) +{ + CPUState *cs = CPU(cris_env_get_cpu(env)); + int trapnr, ret; + target_siginfo_t info; + + while (1) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch (trapnr) { + case 0xaa: + { + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->pregs[PR_EDA]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_BREAK: + ret = do_syscall(env, + env->regs[9], + env->regs[10], + env->regs[11], + env->regs[12], + env->regs[13], + env->pregs[7], + env->pregs[11], + 0, 0); + if (ret == -TARGET_ERESTARTSYS) { + env->pc -= 2; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + env->regs[10] = ret; + } + break; + case EXCP_DEBUG: + { + int sig; + + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) + { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + } + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: + printf ("Unhandled trap: 0x%x\n", trapnr); + cpu_dump_state(cs, stderr, fprintf, 0); + exit(EXIT_FAILURE); + } + process_pending_signals (env); + } +} diff --git a/linux-user/hppa/cpu_loop.inc.c b/linux-user/hppa/cpu_loop.inc.c new file mode 100644 index 0000000000..99a4443e8f --- /dev/null +++ b/linux-user/hppa/cpu_loop.inc.c @@ -0,0 +1,178 @@ +static abi_ulong hppa_lws(CPUHPPAState *env) +{ + uint32_t which = env->gr[20]; + abi_ulong addr = env->gr[26]; + abi_ulong old = env->gr[25]; + abi_ulong new = env->gr[24]; + abi_ulong size, ret; + + switch (which) { + default: + return -TARGET_ENOSYS; + + case 0: /* elf32 atomic 32bit cmpxchg */ + if ((addr & 3) || !access_ok(VERIFY_WRITE, addr, 4)) { + return -TARGET_EFAULT; + } + old = tswap32(old); + new = tswap32(new); + ret = atomic_cmpxchg((uint32_t *)g2h(addr), old, new); + ret = tswap32(ret); + break; + + case 2: /* elf32 atomic "new" cmpxchg */ + size = env->gr[23]; + if (size >= 4) { + return -TARGET_ENOSYS; + } + if (((addr | old | new) & ((1 << size) - 1)) + || !access_ok(VERIFY_WRITE, addr, 1 << size) + || !access_ok(VERIFY_READ, old, 1 << size) + || !access_ok(VERIFY_READ, new, 1 << size)) { + return -TARGET_EFAULT; + } + /* Note that below we use host-endian loads so that the cmpxchg + can be host-endian as well. */ + switch (size) { + case 0: + old = *(uint8_t *)g2h(old); + new = *(uint8_t *)g2h(new); + ret = atomic_cmpxchg((uint8_t *)g2h(addr), old, new); + ret = ret != old; + break; + case 1: + old = *(uint16_t *)g2h(old); + new = *(uint16_t *)g2h(new); + ret = atomic_cmpxchg((uint16_t *)g2h(addr), old, new); + ret = ret != old; + break; + case 2: + old = *(uint32_t *)g2h(old); + new = *(uint32_t *)g2h(new); + ret = atomic_cmpxchg((uint32_t *)g2h(addr), old, new); + ret = ret != old; + break; + case 3: + { + uint64_t o64, n64, r64; + o64 = *(uint64_t *)g2h(old); + n64 = *(uint64_t *)g2h(new); +#ifdef CONFIG_ATOMIC64 + r64 = atomic_cmpxchg__nocheck((uint64_t *)g2h(addr), o64, n64); + ret = r64 != o64; +#else + start_exclusive(); + r64 = *(uint64_t *)g2h(addr); + ret = 1; + if (r64 == o64) { + *(uint64_t *)g2h(addr) = n64; + ret = 0; + } + end_exclusive(); +#endif + } + break; + } + break; + } + + env->gr[28] = ret; + return 0; +} + +void cpu_loop(CPUHPPAState *env) +{ + CPUState *cs = CPU(hppa_env_get_cpu(env)); + target_siginfo_t info; + abi_ulong ret; + int trapnr; + + while (1) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch (trapnr) { + case EXCP_SYSCALL: + ret = do_syscall(env, env->gr[20], + env->gr[26], env->gr[25], + env->gr[24], env->gr[23], + env->gr[22], env->gr[21], 0, 0); + switch (ret) { + default: + env->gr[28] = ret; + /* We arrived here by faking the gateway page. Return. */ + env->iaoq_f = env->gr[31]; + env->iaoq_b = env->gr[31] + 4; + break; + case -TARGET_ERESTARTSYS: + case -TARGET_QEMU_ESIGRETURN: + break; + } + break; + case EXCP_SYSCALL_LWS: + env->gr[21] = hppa_lws(env); + /* We arrived here by faking the gateway page. Return. */ + env->iaoq_f = env->gr[31]; + env->iaoq_b = env->gr[31] + 4; + break; + case EXCP_ITLB_MISS: + case EXCP_DTLB_MISS: + case EXCP_NA_ITLB_MISS: + case EXCP_NA_DTLB_MISS: + case EXCP_IMP: + case EXCP_DMP: + case EXCP_DMB: + case EXCP_PAGE_REF: + case EXCP_DMAR: + case EXCP_DMPI: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_ACCERR; + info._sifields._sigfault._addr = env->cr[CR_IOR]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_UNALIGN: + info.si_signo = TARGET_SIGBUS; + info.si_errno = 0; + info.si_code = 0; + info._sifields._sigfault._addr = env->cr[CR_IOR]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_ILL: + case EXCP_PRIV_OPR: + case EXCP_PRIV_REG: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->iaoq_f; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_OVERFLOW: + case EXCP_COND: + case EXCP_ASSIST: + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + info.si_code = 0; + info._sifields._sigfault._addr = env->iaoq_f; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_DEBUG: + trapnr = gdb_handlesig(cs, TARGET_SIGTRAP); + if (trapnr) { + info.si_signo = trapnr; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, trapnr, QEMU_SI_FAULT, &info); + } + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + default: + g_assert_not_reached(); + } + process_pending_signals(env); + } +} diff --git a/linux-user/i386/cpu_loop.inc.c b/linux-user/i386/cpu_loop.inc.c new file mode 100644 index 0000000000..8f9b6a8278 --- /dev/null +++ b/linux-user/i386/cpu_loop.inc.c @@ -0,0 +1,229 @@ +/***********************************************************/ +/* CPUX86 core interface */ + +uint64_t cpu_get_tsc(CPUX86State *env) +{ + return cpu_get_host_ticks(); +} + +static void write_dt(void *ptr, unsigned long addr, unsigned long limit, + int flags) +{ + unsigned int e1, e2; + uint32_t *p; + e1 = (addr << 16) | (limit & 0xffff); + e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); + e2 |= flags; + p = ptr; + p[0] = tswap32(e1); + p[1] = tswap32(e2); +} + +static uint64_t *idt_table; +#ifdef TARGET_X86_64 +static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, + uint64_t addr, unsigned int sel) +{ + uint32_t *p, e1, e2; + e1 = (addr & 0xffff) | (sel << 16); + e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); + p = ptr; + p[0] = tswap32(e1); + p[1] = tswap32(e2); + p[2] = tswap32(addr >> 32); + p[3] = 0; +} +/* only dpl matters as we do only user space emulation */ +static void set_idt(int n, unsigned int dpl) +{ + set_gate64(idt_table + n * 2, 0, dpl, 0, 0); +} +#else +static void set_gate(void *ptr, unsigned int type, unsigned int dpl, + uint32_t addr, unsigned int sel) +{ + uint32_t *p, e1, e2; + e1 = (addr & 0xffff) | (sel << 16); + e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); + p = ptr; + p[0] = tswap32(e1); + p[1] = tswap32(e2); +} + +/* only dpl matters as we do only user space emulation */ +static void set_idt(int n, unsigned int dpl) +{ + set_gate(idt_table + n, 0, dpl, 0, 0); +} +#endif + +void cpu_loop(CPUX86State *env) +{ + CPUState *cs = CPU(x86_env_get_cpu(env)); + int trapnr; + abi_ulong pc; + abi_ulong ret; + target_siginfo_t info; + + for(;;) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch(trapnr) { + case 0x80: + /* linux syscall from int $0x80 */ + ret = do_syscall(env, + env->regs[R_EAX], + env->regs[R_EBX], + env->regs[R_ECX], + env->regs[R_EDX], + env->regs[R_ESI], + env->regs[R_EDI], + env->regs[R_EBP], + 0, 0); + if (ret == -TARGET_ERESTARTSYS) { + env->eip -= 2; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + env->regs[R_EAX] = ret; + } + break; +#ifndef TARGET_ABI32 + case EXCP_SYSCALL: + /* linux syscall from syscall instruction */ + ret = do_syscall(env, + env->regs[R_EAX], + env->regs[R_EDI], + env->regs[R_ESI], + env->regs[R_EDX], + env->regs[10], + env->regs[8], + env->regs[9], + 0, 0); + if (ret == -TARGET_ERESTARTSYS) { + env->eip -= 2; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + env->regs[R_EAX] = ret; + } + break; +#endif + case EXCP0B_NOSEG: + case EXCP0C_STACK: + info.si_signo = TARGET_SIGBUS; + info.si_errno = 0; + info.si_code = TARGET_SI_KERNEL; + info._sifields._sigfault._addr = 0; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP0D_GPF: + /* XXX: potential problem if ABI32 */ +#ifndef TARGET_X86_64 + if (env->eflags & VM_MASK) { + handle_vm86_fault(env); + } else +#endif + { + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SI_KERNEL; + info._sifields._sigfault._addr = 0; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP0E_PAGE: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + if (!(env->error_code & 1)) + info.si_code = TARGET_SEGV_MAPERR; + else + info.si_code = TARGET_SEGV_ACCERR; + info._sifields._sigfault._addr = env->cr[2]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP00_DIVZ: +#ifndef TARGET_X86_64 + if (env->eflags & VM_MASK) { + handle_vm86_trap(env, trapnr); + } else +#endif + { + /* division by zero */ + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + info.si_code = TARGET_FPE_INTDIV; + info._sifields._sigfault._addr = env->eip; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP01_DB: + case EXCP03_INT3: +#ifndef TARGET_X86_64 + if (env->eflags & VM_MASK) { + handle_vm86_trap(env, trapnr); + } else +#endif + { + info.si_signo = TARGET_SIGTRAP; + info.si_errno = 0; + if (trapnr == EXCP01_DB) { + info.si_code = TARGET_TRAP_BRKPT; + info._sifields._sigfault._addr = env->eip; + } else { + info.si_code = TARGET_SI_KERNEL; + info._sifields._sigfault._addr = 0; + } + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP04_INTO: + case EXCP05_BOUND: +#ifndef TARGET_X86_64 + if (env->eflags & VM_MASK) { + handle_vm86_trap(env, trapnr); + } else +#endif + { + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SI_KERNEL; + info._sifields._sigfault._addr = 0; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP06_ILLOP: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->eip; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_DEBUG: + { + int sig; + + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) + { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + } + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: + pc = env->segs[R_CS].base + env->eip; + EXCP_DUMP(env, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", + (long)pc, trapnr); + abort(); + } + process_pending_signals(env); + } +} diff --git a/linux-user/m68k/cpu_loop.inc.c b/linux-user/m68k/cpu_loop.inc.c new file mode 100644 index 0000000000..196ac16be1 --- /dev/null +++ b/linux-user/m68k/cpu_loop.inc.c @@ -0,0 +1,115 @@ +void cpu_loop(CPUM68KState *env) +{ + CPUState *cs = CPU(m68k_env_get_cpu(env)); + int trapnr; + unsigned int n; + target_siginfo_t info; + TaskState *ts = cs->opaque; + + for(;;) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch(trapnr) { + case EXCP_ILLEGAL: + { + if (ts->sim_syscalls) { + uint16_t nr; + get_user_u16(nr, env->pc + 2); + env->pc += 4; + do_m68k_simcall(env, nr); + } else { + goto do_sigill; + } + } + break; + case EXCP_HALT_INSN: + /* Semihosing syscall. */ + env->pc += 4; + do_m68k_semihosting(env, env->dregs[0]); + break; + case EXCP_LINEA: + case EXCP_LINEF: + case EXCP_UNSUPPORTED: + do_sigill: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_CHK: + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + info.si_code = TARGET_FPE_INTOVF; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_DIV0: + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + info.si_code = TARGET_FPE_INTDIV; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_TRAP0: + { + abi_long ret; + ts->sim_syscalls = 0; + n = env->dregs[0]; + env->pc += 2; + ret = do_syscall(env, + n, + env->dregs[1], + env->dregs[2], + env->dregs[3], + env->dregs[4], + env->dregs[5], + env->aregs[0], + 0, 0); + if (ret == -TARGET_ERESTARTSYS) { + env->pc -= 2; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + env->dregs[0] = ret; + } + } + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_ACCESS: + { + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->mmu.ar; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP_DEBUG: + { + int sig; + + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) + { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + } + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: + EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); + abort(); + } + process_pending_signals(env); + } +} diff --git a/linux-user/main.c b/linux-user/main.c index ba09b7d0c8..fd71113855 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -160,3923 +160,7 @@ void fork_end(int child) } } -#ifdef TARGET_I386 -/***********************************************************/ -/* CPUX86 core interface */ - -uint64_t cpu_get_tsc(CPUX86State *env) -{ - return cpu_get_host_ticks(); -} - -static void write_dt(void *ptr, unsigned long addr, unsigned long limit, - int flags) -{ - unsigned int e1, e2; - uint32_t *p; - e1 = (addr << 16) | (limit & 0xffff); - e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); - e2 |= flags; - p = ptr; - p[0] = tswap32(e1); - p[1] = tswap32(e2); -} - -static uint64_t *idt_table; -#ifdef TARGET_X86_64 -static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, - uint64_t addr, unsigned int sel) -{ - uint32_t *p, e1, e2; - e1 = (addr & 0xffff) | (sel << 16); - e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); - p = ptr; - p[0] = tswap32(e1); - p[1] = tswap32(e2); - p[2] = tswap32(addr >> 32); - p[3] = 0; -} -/* only dpl matters as we do only user space emulation */ -static void set_idt(int n, unsigned int dpl) -{ - set_gate64(idt_table + n * 2, 0, dpl, 0, 0); -} -#else -static void set_gate(void *ptr, unsigned int type, unsigned int dpl, - uint32_t addr, unsigned int sel) -{ - uint32_t *p, e1, e2; - e1 = (addr & 0xffff) | (sel << 16); - e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); - p = ptr; - p[0] = tswap32(e1); - p[1] = tswap32(e2); -} - -/* only dpl matters as we do only user space emulation */ -static void set_idt(int n, unsigned int dpl) -{ - set_gate(idt_table + n, 0, dpl, 0, 0); -} -#endif - -void cpu_loop(CPUX86State *env) -{ - CPUState *cs = CPU(x86_env_get_cpu(env)); - int trapnr; - abi_ulong pc; - abi_ulong ret; - target_siginfo_t info; - - for(;;) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch(trapnr) { - case 0x80: - /* linux syscall from int $0x80 */ - ret = do_syscall(env, - env->regs[R_EAX], - env->regs[R_EBX], - env->regs[R_ECX], - env->regs[R_EDX], - env->regs[R_ESI], - env->regs[R_EDI], - env->regs[R_EBP], - 0, 0); - if (ret == -TARGET_ERESTARTSYS) { - env->eip -= 2; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->regs[R_EAX] = ret; - } - break; -#ifndef TARGET_ABI32 - case EXCP_SYSCALL: - /* linux syscall from syscall instruction */ - ret = do_syscall(env, - env->regs[R_EAX], - env->regs[R_EDI], - env->regs[R_ESI], - env->regs[R_EDX], - env->regs[10], - env->regs[8], - env->regs[9], - 0, 0); - if (ret == -TARGET_ERESTARTSYS) { - env->eip -= 2; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->regs[R_EAX] = ret; - } - break; -#endif - case EXCP0B_NOSEG: - case EXCP0C_STACK: - info.si_signo = TARGET_SIGBUS; - info.si_errno = 0; - info.si_code = TARGET_SI_KERNEL; - info._sifields._sigfault._addr = 0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP0D_GPF: - /* XXX: potential problem if ABI32 */ -#ifndef TARGET_X86_64 - if (env->eflags & VM_MASK) { - handle_vm86_fault(env); - } else -#endif - { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SI_KERNEL; - info._sifields._sigfault._addr = 0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP0E_PAGE: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - if (!(env->error_code & 1)) - info.si_code = TARGET_SEGV_MAPERR; - else - info.si_code = TARGET_SEGV_ACCERR; - info._sifields._sigfault._addr = env->cr[2]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP00_DIVZ: -#ifndef TARGET_X86_64 - if (env->eflags & VM_MASK) { - handle_vm86_trap(env, trapnr); - } else -#endif - { - /* division by zero */ - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - info.si_code = TARGET_FPE_INTDIV; - info._sifields._sigfault._addr = env->eip; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP01_DB: - case EXCP03_INT3: -#ifndef TARGET_X86_64 - if (env->eflags & VM_MASK) { - handle_vm86_trap(env, trapnr); - } else -#endif - { - info.si_signo = TARGET_SIGTRAP; - info.si_errno = 0; - if (trapnr == EXCP01_DB) { - info.si_code = TARGET_TRAP_BRKPT; - info._sifields._sigfault._addr = env->eip; - } else { - info.si_code = TARGET_SI_KERNEL; - info._sifields._sigfault._addr = 0; - } - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP04_INTO: - case EXCP05_BOUND: -#ifndef TARGET_X86_64 - if (env->eflags & VM_MASK) { - handle_vm86_trap(env, trapnr); - } else -#endif - { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SI_KERNEL; - info._sifields._sigfault._addr = 0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP06_ILLOP: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLOPN; - info._sifields._sigfault._addr = env->eip; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case EXCP_DEBUG: - { - int sig; - - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) - { - info.si_signo = sig; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - } - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - pc = env->segs[R_CS].base + env->eip; - EXCP_DUMP(env, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", - (long)pc, trapnr); - abort(); - } - process_pending_signals(env); - } -} -#endif - -#ifdef TARGET_ARM - -#define get_user_code_u32(x, gaddr, env) \ - ({ abi_long __r = get_user_u32((x), (gaddr)); \ - if (!__r && bswap_code(arm_sctlr_b(env))) { \ - (x) = bswap32(x); \ - } \ - __r; \ - }) - -#define get_user_code_u16(x, gaddr, env) \ - ({ abi_long __r = get_user_u16((x), (gaddr)); \ - if (!__r && bswap_code(arm_sctlr_b(env))) { \ - (x) = bswap16(x); \ - } \ - __r; \ - }) - -#define get_user_data_u32(x, gaddr, env) \ - ({ abi_long __r = get_user_u32((x), (gaddr)); \ - if (!__r && arm_cpu_bswap_data(env)) { \ - (x) = bswap32(x); \ - } \ - __r; \ - }) - -#define get_user_data_u16(x, gaddr, env) \ - ({ abi_long __r = get_user_u16((x), (gaddr)); \ - if (!__r && arm_cpu_bswap_data(env)) { \ - (x) = bswap16(x); \ - } \ - __r; \ - }) - -#define put_user_data_u32(x, gaddr, env) \ - ({ typeof(x) __x = (x); \ - if (arm_cpu_bswap_data(env)) { \ - __x = bswap32(__x); \ - } \ - put_user_u32(__x, (gaddr)); \ - }) - -#define put_user_data_u16(x, gaddr, env) \ - ({ typeof(x) __x = (x); \ - if (arm_cpu_bswap_data(env)) { \ - __x = bswap16(__x); \ - } \ - put_user_u16(__x, (gaddr)); \ - }) - -#ifdef TARGET_ABI32 -/* Commpage handling -- there is no commpage for AArch64 */ - -/* - * See the Linux kernel's Documentation/arm/kernel_user_helpers.txt - * Input: - * r0 = pointer to oldval - * r1 = pointer to newval - * r2 = pointer to target value - * - * Output: - * r0 = 0 if *ptr was changed, non-0 if no exchange happened - * C set if *ptr was changed, clear if no exchange happened - * - * Note segv's in kernel helpers are a bit tricky, we can set the - * data address sensibly but the PC address is just the entry point. - */ -static void arm_kernel_cmpxchg64_helper(CPUARMState *env) -{ - uint64_t oldval, newval, val; - uint32_t addr, cpsr; - target_siginfo_t info; - - /* Based on the 32 bit code in do_kernel_trap */ - - /* XXX: This only works between threads, not between processes. - It's probably possible to implement this with native host - operations. However things like ldrex/strex are much harder so - there's not much point trying. */ - start_exclusive(); - cpsr = cpsr_read(env); - addr = env->regs[2]; - - if (get_user_u64(oldval, env->regs[0])) { - env->exception.vaddress = env->regs[0]; - goto segv; - }; - - if (get_user_u64(newval, env->regs[1])) { - env->exception.vaddress = env->regs[1]; - goto segv; - }; - - if (get_user_u64(val, addr)) { - env->exception.vaddress = addr; - goto segv; - } - - if (val == oldval) { - val = newval; - - if (put_user_u64(val, addr)) { - env->exception.vaddress = addr; - goto segv; - }; - - env->regs[0] = 0; - cpsr |= CPSR_C; - } else { - env->regs[0] = -1; - cpsr &= ~CPSR_C; - } - cpsr_write(env, cpsr, CPSR_C, CPSRWriteByInstr); - end_exclusive(); - return; - -segv: - end_exclusive(); - /* We get the PC of the entry address - which is as good as anything, - on a real kernel what you get depends on which mode it uses. */ - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - /* XXX: check env->error_code */ - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->exception.vaddress; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); -} - -/* Handle a jump to the kernel code page. */ -static int -do_kernel_trap(CPUARMState *env) -{ - uint32_t addr; - uint32_t cpsr; - uint32_t val; - - switch (env->regs[15]) { - case 0xffff0fa0: /* __kernel_memory_barrier */ - /* ??? No-op. Will need to do better for SMP. */ - break; - case 0xffff0fc0: /* __kernel_cmpxchg */ - /* XXX: This only works between threads, not between processes. - It's probably possible to implement this with native host - operations. However things like ldrex/strex are much harder so - there's not much point trying. */ - start_exclusive(); - cpsr = cpsr_read(env); - addr = env->regs[2]; - /* FIXME: This should SEGV if the access fails. */ - if (get_user_u32(val, addr)) - val = ~env->regs[0]; - if (val == env->regs[0]) { - val = env->regs[1]; - /* FIXME: Check for segfaults. */ - put_user_u32(val, addr); - env->regs[0] = 0; - cpsr |= CPSR_C; - } else { - env->regs[0] = -1; - cpsr &= ~CPSR_C; - } - cpsr_write(env, cpsr, CPSR_C, CPSRWriteByInstr); - end_exclusive(); - break; - case 0xffff0fe0: /* __kernel_get_tls */ - env->regs[0] = cpu_get_tls(env); - break; - case 0xffff0f60: /* __kernel_cmpxchg64 */ - arm_kernel_cmpxchg64_helper(env); - break; - - default: - return 1; - } - /* Jump back to the caller. */ - addr = env->regs[14]; - if (addr & 1) { - env->thumb = 1; - addr &= ~1; - } - env->regs[15] = addr; - - return 0; -} - -void cpu_loop(CPUARMState *env) -{ - CPUState *cs = CPU(arm_env_get_cpu(env)); - int trapnr; - unsigned int n, insn; - target_siginfo_t info; - uint32_t addr; - abi_ulong ret; - - for(;;) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch(trapnr) { - case EXCP_UDEF: - case EXCP_NOCP: - case EXCP_INVSTATE: - { - TaskState *ts = cs->opaque; - uint32_t opcode; - int rc; - - /* we handle the FPU emulation here, as Linux */ - /* we get the opcode */ - /* FIXME - what to do if get_user() fails? */ - get_user_code_u32(opcode, env->regs[15], env); - - rc = EmulateAll(opcode, &ts->fpa, env); - if (rc == 0) { /* illegal instruction */ - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLOPN; - info._sifields._sigfault._addr = env->regs[15]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } else if (rc < 0) { /* FP exception */ - int arm_fpe=0; - - /* translate softfloat flags to FPSR flags */ - if (-rc & float_flag_invalid) - arm_fpe |= BIT_IOC; - if (-rc & float_flag_divbyzero) - arm_fpe |= BIT_DZC; - if (-rc & float_flag_overflow) - arm_fpe |= BIT_OFC; - if (-rc & float_flag_underflow) - arm_fpe |= BIT_UFC; - if (-rc & float_flag_inexact) - arm_fpe |= BIT_IXC; - - FPSR fpsr = ts->fpa.fpsr; - //printf("fpsr 0x%x, arm_fpe 0x%x\n",fpsr,arm_fpe); - - if (fpsr & (arm_fpe << 16)) { /* exception enabled? */ - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - - /* ordered by priority, least first */ - if (arm_fpe & BIT_IXC) info.si_code = TARGET_FPE_FLTRES; - if (arm_fpe & BIT_UFC) info.si_code = TARGET_FPE_FLTUND; - if (arm_fpe & BIT_OFC) info.si_code = TARGET_FPE_FLTOVF; - if (arm_fpe & BIT_DZC) info.si_code = TARGET_FPE_FLTDIV; - if (arm_fpe & BIT_IOC) info.si_code = TARGET_FPE_FLTINV; - - info._sifields._sigfault._addr = env->regs[15]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } else { - env->regs[15] += 4; - } - - /* accumulate unenabled exceptions */ - if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC)) - fpsr |= BIT_IXC; - if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC)) - fpsr |= BIT_UFC; - if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC)) - fpsr |= BIT_OFC; - if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC)) - fpsr |= BIT_DZC; - if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC)) - fpsr |= BIT_IOC; - ts->fpa.fpsr=fpsr; - } else { /* everything OK */ - /* increment PC */ - env->regs[15] += 4; - } - } - break; - case EXCP_SWI: - case EXCP_BKPT: - { - env->eabi = 1; - /* system call */ - if (trapnr == EXCP_BKPT) { - if (env->thumb) { - /* FIXME - what to do if get_user() fails? */ - get_user_code_u16(insn, env->regs[15], env); - n = insn & 0xff; - env->regs[15] += 2; - } else { - /* FIXME - what to do if get_user() fails? */ - get_user_code_u32(insn, env->regs[15], env); - n = (insn & 0xf) | ((insn >> 4) & 0xff0); - env->regs[15] += 4; - } - } else { - if (env->thumb) { - /* FIXME - what to do if get_user() fails? */ - get_user_code_u16(insn, env->regs[15] - 2, env); - n = insn & 0xff; - } else { - /* FIXME - what to do if get_user() fails? */ - get_user_code_u32(insn, env->regs[15] - 4, env); - n = insn & 0xffffff; - } - } - - if (n == ARM_NR_cacheflush) { - /* nop */ - } else if (n == ARM_NR_semihosting - || n == ARM_NR_thumb_semihosting) { - env->regs[0] = do_arm_semihosting (env); - } else if (n == 0 || n >= ARM_SYSCALL_BASE || env->thumb) { - /* linux syscall */ - if (env->thumb || n == 0) { - n = env->regs[7]; - } else { - n -= ARM_SYSCALL_BASE; - env->eabi = 0; - } - if ( n > ARM_NR_BASE) { - switch (n) { - case ARM_NR_cacheflush: - /* nop */ - break; - case ARM_NR_set_tls: - cpu_set_tls(env, env->regs[0]); - env->regs[0] = 0; - break; - case ARM_NR_breakpoint: - env->regs[15] -= env->thumb ? 2 : 4; - goto excp_debug; - default: - gemu_log("qemu: Unsupported ARM syscall: 0x%x\n", - n); - env->regs[0] = -TARGET_ENOSYS; - break; - } - } else { - ret = do_syscall(env, - n, - env->regs[0], - env->regs[1], - env->regs[2], - env->regs[3], - env->regs[4], - env->regs[5], - 0, 0); - if (ret == -TARGET_ERESTARTSYS) { - env->regs[15] -= env->thumb ? 2 : 4; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->regs[0] = ret; - } - } - } else { - goto error; - } - } - break; - case EXCP_SEMIHOST: - env->regs[0] = do_arm_semihosting(env); - break; - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case EXCP_PREFETCH_ABORT: - case EXCP_DATA_ABORT: - addr = env->exception.vaddress; - { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - /* XXX: check env->error_code */ - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = addr; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP_DEBUG: - excp_debug: - { - int sig; - - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) - { - info.si_signo = sig; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - } - break; - case EXCP_KERNEL_TRAP: - if (do_kernel_trap(env)) - goto error; - break; - case EXCP_YIELD: - /* nothing to do here for user-mode, just resume guest code */ - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - error: - EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); - abort(); - } - process_pending_signals(env); - } -} - -#else - -/* AArch64 main loop */ -void cpu_loop(CPUARMState *env) -{ - CPUState *cs = CPU(arm_env_get_cpu(env)); - int trapnr, sig; - abi_long ret; - target_siginfo_t info; - - for (;;) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch (trapnr) { - case EXCP_SWI: - ret = do_syscall(env, - env->xregs[8], - env->xregs[0], - env->xregs[1], - env->xregs[2], - env->xregs[3], - env->xregs[4], - env->xregs[5], - 0, 0); - if (ret == -TARGET_ERESTARTSYS) { - env->pc -= 4; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->xregs[0] = ret; - } - break; - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case EXCP_UDEF: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLOPN; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_PREFETCH_ABORT: - case EXCP_DATA_ABORT: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - /* XXX: check env->error_code */ - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->exception.vaddress; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_DEBUG: - case EXCP_BKPT: - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) { - info.si_signo = sig; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP_SEMIHOST: - env->xregs[0] = do_arm_semihosting(env); - break; - case EXCP_YIELD: - /* nothing to do here for user-mode, just resume guest code */ - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); - abort(); - } - process_pending_signals(env); - /* Exception return on AArch64 always clears the exclusive monitor, - * so any return to running guest code implies this. - */ - env->exclusive_addr = -1; - } -} -#endif /* ndef TARGET_ABI32 */ - -#endif - -#ifdef TARGET_SPARC -#define SPARC64_STACK_BIAS 2047 - -//#define DEBUG_WIN - -/* WARNING: dealing with register windows _is_ complicated. More info - can be found at http://www.sics.se/~psm/sparcstack.html */ -static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) -{ - index = (index + cwp * 16) % (16 * env->nwindows); - /* wrap handling : if cwp is on the last window, then we use the - registers 'after' the end */ - if (index < 8 && env->cwp == env->nwindows - 1) - index += 16 * env->nwindows; - return index; -} - -/* save the register window 'cwp1' */ -static inline void save_window_offset(CPUSPARCState *env, int cwp1) -{ - unsigned int i; - abi_ulong sp_ptr; - - sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; -#ifdef TARGET_SPARC64 - if (sp_ptr & 3) - sp_ptr += SPARC64_STACK_BIAS; -#endif -#if defined(DEBUG_WIN) - printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n", - sp_ptr, cwp1); -#endif - for(i = 0; i < 16; i++) { - /* FIXME - what to do if put_user() fails? */ - put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); - sp_ptr += sizeof(abi_ulong); - } -} - -static void save_window(CPUSPARCState *env) -{ -#ifndef TARGET_SPARC64 - unsigned int new_wim; - new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) & - ((1LL << env->nwindows) - 1); - save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); - env->wim = new_wim; -#else - save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); - env->cansave++; - env->canrestore--; -#endif -} - -static void restore_window(CPUSPARCState *env) -{ -#ifndef TARGET_SPARC64 - unsigned int new_wim; -#endif - unsigned int i, cwp1; - abi_ulong sp_ptr; - -#ifndef TARGET_SPARC64 - new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) & - ((1LL << env->nwindows) - 1); -#endif - - /* restore the invalid window */ - cwp1 = cpu_cwp_inc(env, env->cwp + 1); - sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; -#ifdef TARGET_SPARC64 - if (sp_ptr & 3) - sp_ptr += SPARC64_STACK_BIAS; -#endif -#if defined(DEBUG_WIN) - printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n", - sp_ptr, cwp1); -#endif - for(i = 0; i < 16; i++) { - /* FIXME - what to do if get_user() fails? */ - get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); - sp_ptr += sizeof(abi_ulong); - } -#ifdef TARGET_SPARC64 - env->canrestore++; - if (env->cleanwin < env->nwindows - 1) - env->cleanwin++; - env->cansave--; -#else - env->wim = new_wim; -#endif -} - -static void flush_windows(CPUSPARCState *env) -{ - int offset, cwp1; - - offset = 1; - for(;;) { - /* if restore would invoke restore_window(), then we can stop */ - cwp1 = cpu_cwp_inc(env, env->cwp + offset); -#ifndef TARGET_SPARC64 - if (env->wim & (1 << cwp1)) - break; -#else - if (env->canrestore == 0) - break; - env->cansave++; - env->canrestore--; -#endif - save_window_offset(env, cwp1); - offset++; - } - cwp1 = cpu_cwp_inc(env, env->cwp + 1); -#ifndef TARGET_SPARC64 - /* set wim so that restore will reload the registers */ - env->wim = 1 << cwp1; -#endif -#if defined(DEBUG_WIN) - printf("flush_windows: nb=%d\n", offset - 1); -#endif -} - -void cpu_loop (CPUSPARCState *env) -{ - CPUState *cs = CPU(sparc_env_get_cpu(env)); - int trapnr; - abi_long ret; - target_siginfo_t info; - - while (1) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - /* Compute PSR before exposing state. */ - if (env->cc_op != CC_OP_FLAGS) { - cpu_get_psr(env); - } - - switch (trapnr) { -#ifndef TARGET_SPARC64 - case 0x88: - case 0x90: -#else - case 0x110: - case 0x16d: -#endif - ret = do_syscall (env, env->gregs[1], - env->regwptr[0], env->regwptr[1], - env->regwptr[2], env->regwptr[3], - env->regwptr[4], env->regwptr[5], - 0, 0); - if (ret == -TARGET_ERESTARTSYS || ret == -TARGET_QEMU_ESIGRETURN) { - break; - } - if ((abi_ulong)ret >= (abi_ulong)(-515)) { -#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) - env->xcc |= PSR_CARRY; -#else - env->psr |= PSR_CARRY; -#endif - ret = -ret; - } else { -#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) - env->xcc &= ~PSR_CARRY; -#else - env->psr &= ~PSR_CARRY; -#endif - } - env->regwptr[0] = ret; - /* next instruction */ - env->pc = env->npc; - env->npc = env->npc + 4; - break; - case 0x83: /* flush windows */ -#ifdef TARGET_ABI32 - case 0x103: -#endif - flush_windows(env); - /* next instruction */ - env->pc = env->npc; - env->npc = env->npc + 4; - break; -#ifndef TARGET_SPARC64 - case TT_WIN_OVF: /* window overflow */ - save_window(env); - break; - case TT_WIN_UNF: /* window underflow */ - restore_window(env); - break; - case TT_TFAULT: - case TT_DFAULT: - { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - /* XXX: check env->error_code */ - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->mmuregs[4]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; -#else - case TT_SPILL: /* window overflow */ - save_window(env); - break; - case TT_FILL: /* window underflow */ - restore_window(env); - break; - case TT_TFAULT: - case TT_DFAULT: - { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - /* XXX: check env->error_code */ - info.si_code = TARGET_SEGV_MAPERR; - if (trapnr == TT_DFAULT) - info._sifields._sigfault._addr = env->dmmu.mmuregs[4]; - else - info._sifields._sigfault._addr = cpu_tsptr(env)->tpc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; -#ifndef TARGET_ABI32 - case 0x16e: - flush_windows(env); - sparc64_get_context(env); - break; - case 0x16f: - flush_windows(env); - sparc64_set_context(env); - break; -#endif -#endif - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case TT_ILL_INSN: - { - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLOPC; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP_DEBUG: - { - int sig; - - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) - { - info.si_signo = sig; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - } - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - printf ("Unhandled trap: 0x%x\n", trapnr); - cpu_dump_state(cs, stderr, fprintf, 0); - exit(EXIT_FAILURE); - } - process_pending_signals (env); - } -} - -#endif - -#ifdef TARGET_PPC -static inline uint64_t cpu_ppc_get_tb(CPUPPCState *env) -{ - return cpu_get_host_ticks(); -} - -uint64_t cpu_ppc_load_tbl(CPUPPCState *env) -{ - return cpu_ppc_get_tb(env); -} - -uint32_t cpu_ppc_load_tbu(CPUPPCState *env) -{ - return cpu_ppc_get_tb(env) >> 32; -} - -uint64_t cpu_ppc_load_atbl(CPUPPCState *env) -{ - return cpu_ppc_get_tb(env); -} - -uint32_t cpu_ppc_load_atbu(CPUPPCState *env) -{ - return cpu_ppc_get_tb(env) >> 32; -} - -uint32_t cpu_ppc601_load_rtcu(CPUPPCState *env) -__attribute__ (( alias ("cpu_ppc_load_tbu") )); - -uint32_t cpu_ppc601_load_rtcl(CPUPPCState *env) -{ - return cpu_ppc_load_tbl(env) & 0x3FFFFF80; -} - -/* XXX: to be fixed */ -int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp) -{ - return -1; -} - -int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val) -{ - return -1; -} - -static int do_store_exclusive(CPUPPCState *env) -{ - target_ulong addr; - target_ulong page_addr; - target_ulong val, val2 __attribute__((unused)) = 0; - int flags; - int segv = 0; - - addr = env->reserve_ea; - page_addr = addr & TARGET_PAGE_MASK; - start_exclusive(); - mmap_lock(); - flags = page_get_flags(page_addr); - if ((flags & PAGE_READ) == 0) { - segv = 1; - } else { - int reg = env->reserve_info & 0x1f; - int size = env->reserve_info >> 5; - int stored = 0; - - if (addr == env->reserve_addr) { - switch (size) { - case 1: segv = get_user_u8(val, addr); break; - case 2: segv = get_user_u16(val, addr); break; - case 4: segv = get_user_u32(val, addr); break; -#if defined(TARGET_PPC64) - case 8: segv = get_user_u64(val, addr); break; - case 16: { - segv = get_user_u64(val, addr); - if (!segv) { - segv = get_user_u64(val2, addr + 8); - } - break; - } -#endif - default: abort(); - } - if (!segv && val == env->reserve_val) { - val = env->gpr[reg]; - switch (size) { - case 1: segv = put_user_u8(val, addr); break; - case 2: segv = put_user_u16(val, addr); break; - case 4: segv = put_user_u32(val, addr); break; -#if defined(TARGET_PPC64) - case 8: segv = put_user_u64(val, addr); break; - case 16: { - if (val2 == env->reserve_val2) { - if (msr_le) { - val2 = val; - val = env->gpr[reg+1]; - } else { - val2 = env->gpr[reg+1]; - } - segv = put_user_u64(val, addr); - if (!segv) { - segv = put_user_u64(val2, addr + 8); - } - } - break; - } -#endif - default: abort(); - } - if (!segv) { - stored = 1; - } - } - } - env->crf[0] = (stored << 1) | xer_so; - env->reserve_addr = (target_ulong)-1; - } - if (!segv) { - env->nip += 4; - } - mmap_unlock(); - end_exclusive(); - return segv; -} - -void cpu_loop(CPUPPCState *env) -{ - CPUState *cs = CPU(ppc_env_get_cpu(env)); - target_siginfo_t info; - int trapnr; - target_ulong ret; - - for(;;) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch(trapnr) { - case POWERPC_EXCP_NONE: - /* Just go on */ - break; - case POWERPC_EXCP_CRITICAL: /* Critical input */ - cpu_abort(cs, "Critical interrupt while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_MCHECK: /* Machine check exception */ - cpu_abort(cs, "Machine check exception while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_DSI: /* Data storage exception */ - /* XXX: check this. Seems bugged */ - switch (env->error_code & 0xFF000000) { - case 0x40000000: - case 0x42000000: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_MAPERR; - break; - case 0x04000000: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLADR; - break; - case 0x08000000: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_ACCERR; - break; - default: - /* Let's send a regular segfault... */ - EXCP_DUMP(env, "Invalid segfault errno (%02x)\n", - env->error_code); - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_MAPERR; - break; - } - info._sifields._sigfault._addr = env->spr[SPR_DAR]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case POWERPC_EXCP_ISI: /* Instruction storage exception */ - /* XXX: check this */ - switch (env->error_code & 0xFF000000) { - case 0x40000000: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_MAPERR; - break; - case 0x10000000: - case 0x08000000: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_ACCERR; - break; - default: - /* Let's send a regular segfault... */ - EXCP_DUMP(env, "Invalid segfault errno (%02x)\n", - env->error_code); - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_MAPERR; - break; - } - info._sifields._sigfault._addr = env->nip - 4; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case POWERPC_EXCP_EXTERNAL: /* External input */ - cpu_abort(cs, "External interrupt while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_ALIGN: /* Alignment exception */ - /* XXX: check this */ - info.si_signo = TARGET_SIGBUS; - info.si_errno = 0; - info.si_code = TARGET_BUS_ADRALN; - info._sifields._sigfault._addr = env->nip; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case POWERPC_EXCP_PROGRAM: /* Program exception */ - case POWERPC_EXCP_HV_EMU: /* HV emulation */ - /* XXX: check this */ - switch (env->error_code & ~0xF) { - case POWERPC_EXCP_FP: - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - switch (env->error_code & 0xF) { - case POWERPC_EXCP_FP_OX: - info.si_code = TARGET_FPE_FLTOVF; - break; - case POWERPC_EXCP_FP_UX: - info.si_code = TARGET_FPE_FLTUND; - break; - case POWERPC_EXCP_FP_ZX: - case POWERPC_EXCP_FP_VXZDZ: - info.si_code = TARGET_FPE_FLTDIV; - break; - case POWERPC_EXCP_FP_XX: - info.si_code = TARGET_FPE_FLTRES; - break; - case POWERPC_EXCP_FP_VXSOFT: - info.si_code = TARGET_FPE_FLTINV; - break; - case POWERPC_EXCP_FP_VXSNAN: - case POWERPC_EXCP_FP_VXISI: - case POWERPC_EXCP_FP_VXIDI: - case POWERPC_EXCP_FP_VXIMZ: - case POWERPC_EXCP_FP_VXVC: - case POWERPC_EXCP_FP_VXSQRT: - case POWERPC_EXCP_FP_VXCVI: - info.si_code = TARGET_FPE_FLTSUB; - break; - default: - EXCP_DUMP(env, "Unknown floating point exception (%02x)\n", - env->error_code); - break; - } - break; - case POWERPC_EXCP_INVAL: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - switch (env->error_code & 0xF) { - case POWERPC_EXCP_INVAL_INVAL: - info.si_code = TARGET_ILL_ILLOPC; - break; - case POWERPC_EXCP_INVAL_LSWX: - info.si_code = TARGET_ILL_ILLOPN; - break; - case POWERPC_EXCP_INVAL_SPR: - info.si_code = TARGET_ILL_PRVREG; - break; - case POWERPC_EXCP_INVAL_FP: - info.si_code = TARGET_ILL_COPROC; - break; - default: - EXCP_DUMP(env, "Unknown invalid operation (%02x)\n", - env->error_code & 0xF); - info.si_code = TARGET_ILL_ILLADR; - break; - } - break; - case POWERPC_EXCP_PRIV: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - switch (env->error_code & 0xF) { - case POWERPC_EXCP_PRIV_OPC: - info.si_code = TARGET_ILL_PRVOPC; - break; - case POWERPC_EXCP_PRIV_REG: - info.si_code = TARGET_ILL_PRVREG; - break; - default: - EXCP_DUMP(env, "Unknown privilege violation (%02x)\n", - env->error_code & 0xF); - info.si_code = TARGET_ILL_PRVOPC; - break; - } - break; - case POWERPC_EXCP_TRAP: - cpu_abort(cs, "Tried to call a TRAP\n"); - break; - default: - /* Should not happen ! */ - cpu_abort(cs, "Unknown program exception (%02x)\n", - env->error_code); - break; - } - info._sifields._sigfault._addr = env->nip; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */ - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_COPROC; - info._sifields._sigfault._addr = env->nip; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case POWERPC_EXCP_SYSCALL: /* System call exception */ - cpu_abort(cs, "Syscall exception while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */ - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_COPROC; - info._sifields._sigfault._addr = env->nip; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case POWERPC_EXCP_DECR: /* Decrementer exception */ - cpu_abort(cs, "Decrementer interrupt while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */ - cpu_abort(cs, "Fix interval timer interrupt while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */ - cpu_abort(cs, "Watchdog timer interrupt while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_DTLB: /* Data TLB error */ - cpu_abort(cs, "Data TLB exception while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_ITLB: /* Instruction TLB error */ - cpu_abort(cs, "Instruction TLB exception while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */ - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_COPROC; - info._sifields._sigfault._addr = env->nip; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */ - cpu_abort(cs, "Embedded floating-point data IRQ not handled\n"); - break; - case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */ - cpu_abort(cs, "Embedded floating-point round IRQ not handled\n"); - break; - case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */ - cpu_abort(cs, "Performance monitor exception not handled\n"); - break; - case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */ - cpu_abort(cs, "Doorbell interrupt while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */ - cpu_abort(cs, "Doorbell critical interrupt while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_RESET: /* System reset exception */ - cpu_abort(cs, "Reset interrupt while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_DSEG: /* Data segment exception */ - cpu_abort(cs, "Data segment exception while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_ISEG: /* Instruction segment exception */ - cpu_abort(cs, "Instruction segment exception " - "while in user mode. Aborting\n"); - break; - /* PowerPC 64 with hypervisor mode support */ - case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */ - cpu_abort(cs, "Hypervisor decrementer interrupt " - "while in user mode. Aborting\n"); - break; - case POWERPC_EXCP_TRACE: /* Trace exception */ - /* Nothing to do: - * we use this exception to emulate step-by-step execution mode. - */ - break; - /* PowerPC 64 with hypervisor mode support */ - case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */ - cpu_abort(cs, "Hypervisor data storage exception " - "while in user mode. Aborting\n"); - break; - case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */ - cpu_abort(cs, "Hypervisor instruction storage exception " - "while in user mode. Aborting\n"); - break; - case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */ - cpu_abort(cs, "Hypervisor data segment exception " - "while in user mode. Aborting\n"); - break; - case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */ - cpu_abort(cs, "Hypervisor instruction segment exception " - "while in user mode. Aborting\n"); - break; - case POWERPC_EXCP_VPU: /* Vector unavailable exception */ - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_COPROC; - info._sifields._sigfault._addr = env->nip; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */ - cpu_abort(cs, "Programmable interval timer interrupt " - "while in user mode. Aborting\n"); - break; - case POWERPC_EXCP_IO: /* IO error exception */ - cpu_abort(cs, "IO error exception while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_RUNM: /* Run mode exception */ - cpu_abort(cs, "Run mode exception while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_EMUL: /* Emulation trap exception */ - cpu_abort(cs, "Emulation trap exception not handled\n"); - break; - case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */ - cpu_abort(cs, "Instruction fetch TLB exception " - "while in user-mode. Aborting"); - break; - case POWERPC_EXCP_DLTLB: /* Data load TLB miss */ - cpu_abort(cs, "Data load TLB exception while in user-mode. " - "Aborting"); - break; - case POWERPC_EXCP_DSTLB: /* Data store TLB miss */ - cpu_abort(cs, "Data store TLB exception while in user-mode. " - "Aborting"); - break; - case POWERPC_EXCP_FPA: /* Floating-point assist exception */ - cpu_abort(cs, "Floating-point assist exception not handled\n"); - break; - case POWERPC_EXCP_IABR: /* Instruction address breakpoint */ - cpu_abort(cs, "Instruction address breakpoint exception " - "not handled\n"); - break; - case POWERPC_EXCP_SMI: /* System management interrupt */ - cpu_abort(cs, "System management interrupt while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_THERM: /* Thermal interrupt */ - cpu_abort(cs, "Thermal interrupt interrupt while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */ - cpu_abort(cs, "Performance monitor exception not handled\n"); - break; - case POWERPC_EXCP_VPUA: /* Vector assist exception */ - cpu_abort(cs, "Vector assist exception not handled\n"); - break; - case POWERPC_EXCP_SOFTP: /* Soft patch exception */ - cpu_abort(cs, "Soft patch exception not handled\n"); - break; - case POWERPC_EXCP_MAINT: /* Maintenance exception */ - cpu_abort(cs, "Maintenance exception while in user mode. " - "Aborting\n"); - break; - case POWERPC_EXCP_STOP: /* stop translation */ - /* We did invalidate the instruction cache. Go on */ - break; - case POWERPC_EXCP_BRANCH: /* branch instruction: */ - /* We just stopped because of a branch. Go on */ - break; - case POWERPC_EXCP_SYSCALL_USER: - /* system call in user-mode emulation */ - /* WARNING: - * PPC ABI uses overflow flag in cr0 to signal an error - * in syscalls. - */ - env->crf[0] &= ~0x1; - env->nip += 4; - ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], - env->gpr[5], env->gpr[6], env->gpr[7], - env->gpr[8], 0, 0); - if (ret == -TARGET_ERESTARTSYS) { - env->nip -= 4; - break; - } - if (ret == (target_ulong)(-TARGET_QEMU_ESIGRETURN)) { - /* Returning from a successful sigreturn syscall. - Avoid corrupting register state. */ - break; - } - if (ret > (target_ulong)(-515)) { - env->crf[0] |= 0x1; - ret = -ret; - } - env->gpr[3] = ret; - break; - case POWERPC_EXCP_STCX: - if (do_store_exclusive(env)) { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->nip; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP_DEBUG: - { - int sig; - - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) { - info.si_signo = sig; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - } - break; - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - cpu_abort(cs, "Unknown exception 0x%x. Aborting\n", trapnr); - break; - } - process_pending_signals(env); - } -} -#endif - -#ifdef TARGET_MIPS - -# ifdef TARGET_ABI_MIPSO32 -# define MIPS_SYS(name, args) args, -static const uint8_t mips_syscall_args[] = { - MIPS_SYS(sys_syscall , 8) /* 4000 */ - MIPS_SYS(sys_exit , 1) - MIPS_SYS(sys_fork , 0) - MIPS_SYS(sys_read , 3) - MIPS_SYS(sys_write , 3) - MIPS_SYS(sys_open , 3) /* 4005 */ - MIPS_SYS(sys_close , 1) - MIPS_SYS(sys_waitpid , 3) - MIPS_SYS(sys_creat , 2) - MIPS_SYS(sys_link , 2) - MIPS_SYS(sys_unlink , 1) /* 4010 */ - MIPS_SYS(sys_execve , 0) - MIPS_SYS(sys_chdir , 1) - MIPS_SYS(sys_time , 1) - MIPS_SYS(sys_mknod , 3) - MIPS_SYS(sys_chmod , 2) /* 4015 */ - MIPS_SYS(sys_lchown , 3) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */ - MIPS_SYS(sys_lseek , 3) - MIPS_SYS(sys_getpid , 0) /* 4020 */ - MIPS_SYS(sys_mount , 5) - MIPS_SYS(sys_umount , 1) - MIPS_SYS(sys_setuid , 1) - MIPS_SYS(sys_getuid , 0) - MIPS_SYS(sys_stime , 1) /* 4025 */ - MIPS_SYS(sys_ptrace , 4) - MIPS_SYS(sys_alarm , 1) - MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */ - MIPS_SYS(sys_pause , 0) - MIPS_SYS(sys_utime , 2) /* 4030 */ - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_access , 2) - MIPS_SYS(sys_nice , 1) - MIPS_SYS(sys_ni_syscall , 0) /* 4035 */ - MIPS_SYS(sys_sync , 0) - MIPS_SYS(sys_kill , 2) - MIPS_SYS(sys_rename , 2) - MIPS_SYS(sys_mkdir , 2) - MIPS_SYS(sys_rmdir , 1) /* 4040 */ - MIPS_SYS(sys_dup , 1) - MIPS_SYS(sys_pipe , 0) - MIPS_SYS(sys_times , 1) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_brk , 1) /* 4045 */ - MIPS_SYS(sys_setgid , 1) - MIPS_SYS(sys_getgid , 0) - MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */ - MIPS_SYS(sys_geteuid , 0) - MIPS_SYS(sys_getegid , 0) /* 4050 */ - MIPS_SYS(sys_acct , 0) - MIPS_SYS(sys_umount2 , 2) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_ioctl , 3) - MIPS_SYS(sys_fcntl , 3) /* 4055 */ - MIPS_SYS(sys_ni_syscall , 2) - MIPS_SYS(sys_setpgid , 2) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_olduname , 1) - MIPS_SYS(sys_umask , 1) /* 4060 */ - MIPS_SYS(sys_chroot , 1) - MIPS_SYS(sys_ustat , 2) - MIPS_SYS(sys_dup2 , 2) - MIPS_SYS(sys_getppid , 0) - MIPS_SYS(sys_getpgrp , 0) /* 4065 */ - MIPS_SYS(sys_setsid , 0) - MIPS_SYS(sys_sigaction , 3) - MIPS_SYS(sys_sgetmask , 0) - MIPS_SYS(sys_ssetmask , 1) - MIPS_SYS(sys_setreuid , 2) /* 4070 */ - MIPS_SYS(sys_setregid , 2) - MIPS_SYS(sys_sigsuspend , 0) - MIPS_SYS(sys_sigpending , 1) - MIPS_SYS(sys_sethostname , 2) - MIPS_SYS(sys_setrlimit , 2) /* 4075 */ - MIPS_SYS(sys_getrlimit , 2) - MIPS_SYS(sys_getrusage , 2) - MIPS_SYS(sys_gettimeofday, 2) - MIPS_SYS(sys_settimeofday, 2) - MIPS_SYS(sys_getgroups , 2) /* 4080 */ - MIPS_SYS(sys_setgroups , 2) - MIPS_SYS(sys_ni_syscall , 0) /* old_select */ - MIPS_SYS(sys_symlink , 2) - MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */ - MIPS_SYS(sys_readlink , 3) /* 4085 */ - MIPS_SYS(sys_uselib , 1) - MIPS_SYS(sys_swapon , 2) - MIPS_SYS(sys_reboot , 3) - MIPS_SYS(old_readdir , 3) - MIPS_SYS(old_mmap , 6) /* 4090 */ - MIPS_SYS(sys_munmap , 2) - MIPS_SYS(sys_truncate , 2) - MIPS_SYS(sys_ftruncate , 2) - MIPS_SYS(sys_fchmod , 2) - MIPS_SYS(sys_fchown , 3) /* 4095 */ - MIPS_SYS(sys_getpriority , 2) - MIPS_SYS(sys_setpriority , 3) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_statfs , 2) - MIPS_SYS(sys_fstatfs , 2) /* 4100 */ - MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */ - MIPS_SYS(sys_socketcall , 2) - MIPS_SYS(sys_syslog , 3) - MIPS_SYS(sys_setitimer , 3) - MIPS_SYS(sys_getitimer , 2) /* 4105 */ - MIPS_SYS(sys_newstat , 2) - MIPS_SYS(sys_newlstat , 2) - MIPS_SYS(sys_newfstat , 2) - MIPS_SYS(sys_uname , 1) - MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */ - MIPS_SYS(sys_vhangup , 0) - MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */ - MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */ - MIPS_SYS(sys_wait4 , 4) - MIPS_SYS(sys_swapoff , 1) /* 4115 */ - MIPS_SYS(sys_sysinfo , 1) - MIPS_SYS(sys_ipc , 6) - MIPS_SYS(sys_fsync , 1) - MIPS_SYS(sys_sigreturn , 0) - MIPS_SYS(sys_clone , 6) /* 4120 */ - MIPS_SYS(sys_setdomainname, 2) - MIPS_SYS(sys_newuname , 1) - MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */ - MIPS_SYS(sys_adjtimex , 1) - MIPS_SYS(sys_mprotect , 3) /* 4125 */ - MIPS_SYS(sys_sigprocmask , 3) - MIPS_SYS(sys_ni_syscall , 0) /* was create_module */ - MIPS_SYS(sys_init_module , 5) - MIPS_SYS(sys_delete_module, 1) - MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */ - MIPS_SYS(sys_quotactl , 0) - MIPS_SYS(sys_getpgid , 1) - MIPS_SYS(sys_fchdir , 1) - MIPS_SYS(sys_bdflush , 2) - MIPS_SYS(sys_sysfs , 3) /* 4135 */ - MIPS_SYS(sys_personality , 1) - MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */ - MIPS_SYS(sys_setfsuid , 1) - MIPS_SYS(sys_setfsgid , 1) - MIPS_SYS(sys_llseek , 5) /* 4140 */ - MIPS_SYS(sys_getdents , 3) - MIPS_SYS(sys_select , 5) - MIPS_SYS(sys_flock , 2) - MIPS_SYS(sys_msync , 3) - MIPS_SYS(sys_readv , 3) /* 4145 */ - MIPS_SYS(sys_writev , 3) - MIPS_SYS(sys_cacheflush , 3) - MIPS_SYS(sys_cachectl , 3) - MIPS_SYS(sys_sysmips , 4) - MIPS_SYS(sys_ni_syscall , 0) /* 4150 */ - MIPS_SYS(sys_getsid , 1) - MIPS_SYS(sys_fdatasync , 0) - MIPS_SYS(sys_sysctl , 1) - MIPS_SYS(sys_mlock , 2) - MIPS_SYS(sys_munlock , 2) /* 4155 */ - MIPS_SYS(sys_mlockall , 1) - MIPS_SYS(sys_munlockall , 0) - MIPS_SYS(sys_sched_setparam, 2) - MIPS_SYS(sys_sched_getparam, 2) - MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */ - MIPS_SYS(sys_sched_getscheduler, 1) - MIPS_SYS(sys_sched_yield , 0) - MIPS_SYS(sys_sched_get_priority_max, 1) - MIPS_SYS(sys_sched_get_priority_min, 1) - MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */ - MIPS_SYS(sys_nanosleep, 2) - MIPS_SYS(sys_mremap , 5) - MIPS_SYS(sys_accept , 3) - MIPS_SYS(sys_bind , 3) - MIPS_SYS(sys_connect , 3) /* 4170 */ - MIPS_SYS(sys_getpeername , 3) - MIPS_SYS(sys_getsockname , 3) - MIPS_SYS(sys_getsockopt , 5) - MIPS_SYS(sys_listen , 2) - MIPS_SYS(sys_recv , 4) /* 4175 */ - MIPS_SYS(sys_recvfrom , 6) - MIPS_SYS(sys_recvmsg , 3) - MIPS_SYS(sys_send , 4) - MIPS_SYS(sys_sendmsg , 3) - MIPS_SYS(sys_sendto , 6) /* 4180 */ - MIPS_SYS(sys_setsockopt , 5) - MIPS_SYS(sys_shutdown , 2) - MIPS_SYS(sys_socket , 3) - MIPS_SYS(sys_socketpair , 4) - MIPS_SYS(sys_setresuid , 3) /* 4185 */ - MIPS_SYS(sys_getresuid , 3) - MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */ - MIPS_SYS(sys_poll , 3) - MIPS_SYS(sys_nfsservctl , 3) - MIPS_SYS(sys_setresgid , 3) /* 4190 */ - MIPS_SYS(sys_getresgid , 3) - MIPS_SYS(sys_prctl , 5) - MIPS_SYS(sys_rt_sigreturn, 0) - MIPS_SYS(sys_rt_sigaction, 4) - MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */ - MIPS_SYS(sys_rt_sigpending, 2) - MIPS_SYS(sys_rt_sigtimedwait, 4) - MIPS_SYS(sys_rt_sigqueueinfo, 3) - MIPS_SYS(sys_rt_sigsuspend, 0) - MIPS_SYS(sys_pread64 , 6) /* 4200 */ - MIPS_SYS(sys_pwrite64 , 6) - MIPS_SYS(sys_chown , 3) - MIPS_SYS(sys_getcwd , 2) - MIPS_SYS(sys_capget , 2) - MIPS_SYS(sys_capset , 2) /* 4205 */ - MIPS_SYS(sys_sigaltstack , 2) - MIPS_SYS(sys_sendfile , 4) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_mmap2 , 6) /* 4210 */ - MIPS_SYS(sys_truncate64 , 4) - MIPS_SYS(sys_ftruncate64 , 4) - MIPS_SYS(sys_stat64 , 2) - MIPS_SYS(sys_lstat64 , 2) - MIPS_SYS(sys_fstat64 , 2) /* 4215 */ - MIPS_SYS(sys_pivot_root , 2) - MIPS_SYS(sys_mincore , 3) - MIPS_SYS(sys_madvise , 3) - MIPS_SYS(sys_getdents64 , 3) - MIPS_SYS(sys_fcntl64 , 3) /* 4220 */ - MIPS_SYS(sys_ni_syscall , 0) - MIPS_SYS(sys_gettid , 0) - MIPS_SYS(sys_readahead , 5) - MIPS_SYS(sys_setxattr , 5) - MIPS_SYS(sys_lsetxattr , 5) /* 4225 */ - MIPS_SYS(sys_fsetxattr , 5) - MIPS_SYS(sys_getxattr , 4) - MIPS_SYS(sys_lgetxattr , 4) - MIPS_SYS(sys_fgetxattr , 4) - MIPS_SYS(sys_listxattr , 3) /* 4230 */ - MIPS_SYS(sys_llistxattr , 3) - MIPS_SYS(sys_flistxattr , 3) - MIPS_SYS(sys_removexattr , 2) - MIPS_SYS(sys_lremovexattr, 2) - MIPS_SYS(sys_fremovexattr, 2) /* 4235 */ - MIPS_SYS(sys_tkill , 2) - MIPS_SYS(sys_sendfile64 , 5) - MIPS_SYS(sys_futex , 6) - MIPS_SYS(sys_sched_setaffinity, 3) - MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */ - MIPS_SYS(sys_io_setup , 2) - MIPS_SYS(sys_io_destroy , 1) - MIPS_SYS(sys_io_getevents, 5) - MIPS_SYS(sys_io_submit , 3) - MIPS_SYS(sys_io_cancel , 3) /* 4245 */ - MIPS_SYS(sys_exit_group , 1) - MIPS_SYS(sys_lookup_dcookie, 3) - MIPS_SYS(sys_epoll_create, 1) - MIPS_SYS(sys_epoll_ctl , 4) - MIPS_SYS(sys_epoll_wait , 3) /* 4250 */ - MIPS_SYS(sys_remap_file_pages, 5) - MIPS_SYS(sys_set_tid_address, 1) - MIPS_SYS(sys_restart_syscall, 0) - MIPS_SYS(sys_fadvise64_64, 7) - MIPS_SYS(sys_statfs64 , 3) /* 4255 */ - MIPS_SYS(sys_fstatfs64 , 2) - MIPS_SYS(sys_timer_create, 3) - MIPS_SYS(sys_timer_settime, 4) - MIPS_SYS(sys_timer_gettime, 2) - MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */ - MIPS_SYS(sys_timer_delete, 1) - MIPS_SYS(sys_clock_settime, 2) - MIPS_SYS(sys_clock_gettime, 2) - MIPS_SYS(sys_clock_getres, 2) - MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */ - MIPS_SYS(sys_tgkill , 3) - MIPS_SYS(sys_utimes , 2) - MIPS_SYS(sys_mbind , 4) - MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */ - MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */ - MIPS_SYS(sys_mq_open , 4) - MIPS_SYS(sys_mq_unlink , 1) - MIPS_SYS(sys_mq_timedsend, 5) - MIPS_SYS(sys_mq_timedreceive, 5) - MIPS_SYS(sys_mq_notify , 2) /* 4275 */ - MIPS_SYS(sys_mq_getsetattr, 3) - MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */ - MIPS_SYS(sys_waitid , 4) - MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */ - MIPS_SYS(sys_add_key , 5) - MIPS_SYS(sys_request_key, 4) - MIPS_SYS(sys_keyctl , 5) - MIPS_SYS(sys_set_thread_area, 1) - MIPS_SYS(sys_inotify_init, 0) - MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */ - MIPS_SYS(sys_inotify_rm_watch, 2) - MIPS_SYS(sys_migrate_pages, 4) - MIPS_SYS(sys_openat, 4) - MIPS_SYS(sys_mkdirat, 3) - MIPS_SYS(sys_mknodat, 4) /* 4290 */ - MIPS_SYS(sys_fchownat, 5) - MIPS_SYS(sys_futimesat, 3) - MIPS_SYS(sys_fstatat64, 4) - MIPS_SYS(sys_unlinkat, 3) - MIPS_SYS(sys_renameat, 4) /* 4295 */ - MIPS_SYS(sys_linkat, 5) - MIPS_SYS(sys_symlinkat, 3) - MIPS_SYS(sys_readlinkat, 4) - MIPS_SYS(sys_fchmodat, 3) - MIPS_SYS(sys_faccessat, 3) /* 4300 */ - MIPS_SYS(sys_pselect6, 6) - MIPS_SYS(sys_ppoll, 5) - MIPS_SYS(sys_unshare, 1) - MIPS_SYS(sys_splice, 6) - MIPS_SYS(sys_sync_file_range, 7) /* 4305 */ - MIPS_SYS(sys_tee, 4) - MIPS_SYS(sys_vmsplice, 4) - MIPS_SYS(sys_move_pages, 6) - MIPS_SYS(sys_set_robust_list, 2) - MIPS_SYS(sys_get_robust_list, 3) /* 4310 */ - MIPS_SYS(sys_kexec_load, 4) - MIPS_SYS(sys_getcpu, 3) - MIPS_SYS(sys_epoll_pwait, 6) - MIPS_SYS(sys_ioprio_set, 3) - MIPS_SYS(sys_ioprio_get, 2) - MIPS_SYS(sys_utimensat, 4) - MIPS_SYS(sys_signalfd, 3) - MIPS_SYS(sys_ni_syscall, 0) /* was timerfd */ - MIPS_SYS(sys_eventfd, 1) - MIPS_SYS(sys_fallocate, 6) /* 4320 */ - MIPS_SYS(sys_timerfd_create, 2) - MIPS_SYS(sys_timerfd_gettime, 2) - MIPS_SYS(sys_timerfd_settime, 4) - MIPS_SYS(sys_signalfd4, 4) - MIPS_SYS(sys_eventfd2, 2) /* 4325 */ - MIPS_SYS(sys_epoll_create1, 1) - MIPS_SYS(sys_dup3, 3) - MIPS_SYS(sys_pipe2, 2) - MIPS_SYS(sys_inotify_init1, 1) - MIPS_SYS(sys_preadv, 5) /* 4330 */ - MIPS_SYS(sys_pwritev, 5) - MIPS_SYS(sys_rt_tgsigqueueinfo, 4) - MIPS_SYS(sys_perf_event_open, 5) - MIPS_SYS(sys_accept4, 4) - MIPS_SYS(sys_recvmmsg, 5) /* 4335 */ - MIPS_SYS(sys_fanotify_init, 2) - MIPS_SYS(sys_fanotify_mark, 6) - MIPS_SYS(sys_prlimit64, 4) - MIPS_SYS(sys_name_to_handle_at, 5) - MIPS_SYS(sys_open_by_handle_at, 3) /* 4340 */ - MIPS_SYS(sys_clock_adjtime, 2) - MIPS_SYS(sys_syncfs, 1) - MIPS_SYS(sys_sendmmsg, 4) - MIPS_SYS(sys_setns, 2) - MIPS_SYS(sys_process_vm_readv, 6) /* 345 */ - MIPS_SYS(sys_process_vm_writev, 6) - MIPS_SYS(sys_kcmp, 5) - MIPS_SYS(sys_finit_module, 3) - MIPS_SYS(sys_sched_setattr, 2) - MIPS_SYS(sys_sched_getattr, 3) /* 350 */ - MIPS_SYS(sys_renameat2, 5) - MIPS_SYS(sys_seccomp, 3) - MIPS_SYS(sys_getrandom, 3) - MIPS_SYS(sys_memfd_create, 2) - MIPS_SYS(sys_bpf, 3) /* 355 */ - MIPS_SYS(sys_execveat, 5) - MIPS_SYS(sys_userfaultfd, 1) - MIPS_SYS(sys_membarrier, 2) - MIPS_SYS(sys_mlock2, 3) - MIPS_SYS(sys_copy_file_range, 6) /* 360 */ - MIPS_SYS(sys_preadv2, 6) - MIPS_SYS(sys_pwritev2, 6) -}; -# undef MIPS_SYS -# endif /* O32 */ - -static int do_store_exclusive(CPUMIPSState *env) -{ - target_ulong addr; - target_ulong page_addr; - target_ulong val; - int flags; - int segv = 0; - int reg; - int d; - - addr = env->lladdr; - page_addr = addr & TARGET_PAGE_MASK; - start_exclusive(); - mmap_lock(); - flags = page_get_flags(page_addr); - if ((flags & PAGE_READ) == 0) { - segv = 1; - } else { - reg = env->llreg & 0x1f; - d = (env->llreg & 0x20) != 0; - if (d) { - segv = get_user_s64(val, addr); - } else { - segv = get_user_s32(val, addr); - } - if (!segv) { - if (val != env->llval) { - env->active_tc.gpr[reg] = 0; - } else { - if (d) { - segv = put_user_u64(env->llnewval, addr); - } else { - segv = put_user_u32(env->llnewval, addr); - } - if (!segv) { - env->active_tc.gpr[reg] = 1; - } - } - } - } - env->lladdr = -1; - if (!segv) { - env->active_tc.PC += 4; - } - mmap_unlock(); - end_exclusive(); - return segv; -} - -/* Break codes */ -enum { - BRK_OVERFLOW = 6, - BRK_DIVZERO = 7 -}; - -static int do_break(CPUMIPSState *env, target_siginfo_t *info, - unsigned int code) -{ - int ret = -1; - - switch (code) { - case BRK_OVERFLOW: - case BRK_DIVZERO: - info->si_signo = TARGET_SIGFPE; - info->si_errno = 0; - info->si_code = (code == BRK_OVERFLOW) ? FPE_INTOVF : FPE_INTDIV; - queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info); - ret = 0; - break; - default: - info->si_signo = TARGET_SIGTRAP; - info->si_errno = 0; - queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info); - ret = 0; - break; - } - - return ret; -} - -void cpu_loop(CPUMIPSState *env) -{ - CPUState *cs = CPU(mips_env_get_cpu(env)); - target_siginfo_t info; - int trapnr; - abi_long ret; -# ifdef TARGET_ABI_MIPSO32 - unsigned int syscall_num; -# endif - - for(;;) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch(trapnr) { - case EXCP_SYSCALL: - env->active_tc.PC += 4; -# ifdef TARGET_ABI_MIPSO32 - syscall_num = env->active_tc.gpr[2] - 4000; - if (syscall_num >= sizeof(mips_syscall_args)) { - ret = -TARGET_ENOSYS; - } else { - int nb_args; - abi_ulong sp_reg; - abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0; - - nb_args = mips_syscall_args[syscall_num]; - sp_reg = env->active_tc.gpr[29]; - switch (nb_args) { - /* these arguments are taken from the stack */ - case 8: - if ((ret = get_user_ual(arg8, sp_reg + 28)) != 0) { - goto done_syscall; - } - case 7: - if ((ret = get_user_ual(arg7, sp_reg + 24)) != 0) { - goto done_syscall; - } - case 6: - if ((ret = get_user_ual(arg6, sp_reg + 20)) != 0) { - goto done_syscall; - } - case 5: - if ((ret = get_user_ual(arg5, sp_reg + 16)) != 0) { - goto done_syscall; - } - default: - break; - } - ret = do_syscall(env, env->active_tc.gpr[2], - env->active_tc.gpr[4], - env->active_tc.gpr[5], - env->active_tc.gpr[6], - env->active_tc.gpr[7], - arg5, arg6, arg7, arg8); - } -done_syscall: -# else - ret = do_syscall(env, env->active_tc.gpr[2], - env->active_tc.gpr[4], env->active_tc.gpr[5], - env->active_tc.gpr[6], env->active_tc.gpr[7], - env->active_tc.gpr[8], env->active_tc.gpr[9], - env->active_tc.gpr[10], env->active_tc.gpr[11]); -# endif /* O32 */ - if (ret == -TARGET_ERESTARTSYS) { - env->active_tc.PC -= 4; - break; - } - if (ret == -TARGET_QEMU_ESIGRETURN) { - /* Returning from a successful sigreturn syscall. - Avoid clobbering register state. */ - break; - } - if ((abi_ulong)ret >= (abi_ulong)-1133) { - env->active_tc.gpr[7] = 1; /* error flag */ - ret = -ret; - } else { - env->active_tc.gpr[7] = 0; /* error flag */ - } - env->active_tc.gpr[2] = ret; - break; - case EXCP_TLBL: - case EXCP_TLBS: - case EXCP_AdEL: - case EXCP_AdES: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - /* XXX: check env->error_code */ - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->CP0_BadVAddr; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_CpU: - case EXCP_RI: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = 0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case EXCP_DEBUG: - { - int sig; - - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) - { - info.si_signo = sig; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - } - break; - case EXCP_SC: - if (do_store_exclusive(env)) { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->active_tc.PC; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP_DSPDIS: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLOPC; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - /* The code below was inspired by the MIPS Linux kernel trap - * handling code in arch/mips/kernel/traps.c. - */ - case EXCP_BREAK: - { - abi_ulong trap_instr; - unsigned int code; - - if (env->hflags & MIPS_HFLAG_M16) { - if (env->insn_flags & ASE_MICROMIPS) { - /* microMIPS mode */ - ret = get_user_u16(trap_instr, env->active_tc.PC); - if (ret != 0) { - goto error; - } - - if ((trap_instr >> 10) == 0x11) { - /* 16-bit instruction */ - code = trap_instr & 0xf; - } else { - /* 32-bit instruction */ - abi_ulong instr_lo; - - ret = get_user_u16(instr_lo, - env->active_tc.PC + 2); - if (ret != 0) { - goto error; - } - trap_instr = (trap_instr << 16) | instr_lo; - code = ((trap_instr >> 6) & ((1 << 20) - 1)); - /* Unfortunately, microMIPS also suffers from - the old assembler bug... */ - if (code >= (1 << 10)) { - code >>= 10; - } - } - } else { - /* MIPS16e mode */ - ret = get_user_u16(trap_instr, env->active_tc.PC); - if (ret != 0) { - goto error; - } - code = (trap_instr >> 6) & 0x3f; - } - } else { - ret = get_user_u32(trap_instr, env->active_tc.PC); - if (ret != 0) { - goto error; - } - - /* As described in the original Linux kernel code, the - * below checks on 'code' are to work around an old - * assembly bug. - */ - code = ((trap_instr >> 6) & ((1 << 20) - 1)); - if (code >= (1 << 10)) { - code >>= 10; - } - } - - if (do_break(env, &info, code) != 0) { - goto error; - } - } - break; - case EXCP_TRAP: - { - abi_ulong trap_instr; - unsigned int code = 0; - - if (env->hflags & MIPS_HFLAG_M16) { - /* microMIPS mode */ - abi_ulong instr[2]; - - ret = get_user_u16(instr[0], env->active_tc.PC) || - get_user_u16(instr[1], env->active_tc.PC + 2); - - trap_instr = (instr[0] << 16) | instr[1]; - } else { - ret = get_user_u32(trap_instr, env->active_tc.PC); - } - - if (ret != 0) { - goto error; - } - - /* The immediate versions don't provide a code. */ - if (!(trap_instr & 0xFC000000)) { - if (env->hflags & MIPS_HFLAG_M16) { - /* microMIPS mode */ - code = ((trap_instr >> 12) & ((1 << 4) - 1)); - } else { - code = ((trap_instr >> 6) & ((1 << 10) - 1)); - } - } - - if (do_break(env, &info, code) != 0) { - goto error; - } - } - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: -error: - EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); - abort(); - } - process_pending_signals(env); - } -} -#endif - -#ifdef TARGET_NIOS2 - -void cpu_loop(CPUNios2State *env) -{ - CPUState *cs = ENV_GET_CPU(env); - Nios2CPU *cpu = NIOS2_CPU(cs); - target_siginfo_t info; - int trapnr, gdbsig, ret; - - for (;;) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - gdbsig = 0; - - switch (trapnr) { - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case EXCP_TRAP: - if (env->regs[R_AT] == 0) { - abi_long ret; - qemu_log_mask(CPU_LOG_INT, "\nSyscall\n"); - - ret = do_syscall(env, env->regs[2], - env->regs[4], env->regs[5], env->regs[6], - env->regs[7], env->regs[8], env->regs[9], - 0, 0); - - if (env->regs[2] == 0) { /* FIXME: syscall 0 workaround */ - ret = 0; - } - - env->regs[2] = abs(ret); - /* Return value is 0..4096 */ - env->regs[7] = (ret > 0xfffffffffffff000ULL); - env->regs[CR_ESTATUS] = env->regs[CR_STATUS]; - env->regs[CR_STATUS] &= ~0x3; - env->regs[R_EA] = env->regs[R_PC] + 4; - env->regs[R_PC] += 4; - break; - } else { - qemu_log_mask(CPU_LOG_INT, "\nTrap\n"); - - env->regs[CR_ESTATUS] = env->regs[CR_STATUS]; - env->regs[CR_STATUS] &= ~0x3; - env->regs[R_EA] = env->regs[R_PC] + 4; - env->regs[R_PC] = cpu->exception_addr; - - gdbsig = TARGET_SIGTRAP; - break; - } - case 0xaa: - switch (env->regs[R_PC]) { - /*case 0x1000:*/ /* TODO:__kuser_helper_version */ - case 0x1004: /* __kuser_cmpxchg */ - start_exclusive(); - if (env->regs[4] & 0x3) { - goto kuser_fail; - } - ret = get_user_u32(env->regs[2], env->regs[4]); - if (ret) { - end_exclusive(); - goto kuser_fail; - } - env->regs[2] -= env->regs[5]; - if (env->regs[2] == 0) { - put_user_u32(env->regs[6], env->regs[4]); - } - end_exclusive(); - env->regs[R_PC] = env->regs[R_RA]; - break; - /*case 0x1040:*/ /* TODO:__kuser_sigtramp */ - default: - ; -kuser_fail: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - /* TODO: check env->error_code */ - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->regs[R_PC]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - default: - EXCP_DUMP(env, "\nqemu: unhandled CPU exception %#x - aborting\n", - trapnr); - gdbsig = TARGET_SIGILL; - break; - } - if (gdbsig) { - gdb_handlesig(cs, gdbsig); - if (gdbsig != TARGET_SIGTRAP) { - exit(EXIT_FAILURE); - } - } - - process_pending_signals(env); - } -} - -#endif /* TARGET_NIOS2 */ - -#ifdef TARGET_OPENRISC - -void cpu_loop(CPUOpenRISCState *env) -{ - CPUState *cs = CPU(openrisc_env_get_cpu(env)); - int trapnr; - abi_long ret; - target_siginfo_t info; - - for (;;) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch (trapnr) { - case EXCP_SYSCALL: - env->pc += 4; /* 0xc00; */ - ret = do_syscall(env, - cpu_get_gpr(env, 11), /* return value */ - cpu_get_gpr(env, 3), /* r3 - r7 are params */ - cpu_get_gpr(env, 4), - cpu_get_gpr(env, 5), - cpu_get_gpr(env, 6), - cpu_get_gpr(env, 7), - cpu_get_gpr(env, 8), 0, 0); - if (ret == -TARGET_ERESTARTSYS) { - env->pc -= 4; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - cpu_set_gpr(env, 11, ret); - } - break; - case EXCP_DPF: - case EXCP_IPF: - case EXCP_RANGE: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_ALIGN: - info.si_signo = TARGET_SIGBUS; - info.si_errno = 0; - info.si_code = TARGET_BUS_ADRALN; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_ILLEGAL: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLOPC; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_FPE: - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - info.si_code = 0; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_INTERRUPT: - /* We processed the pending cpu work above. */ - break; - case EXCP_DEBUG: - trapnr = gdb_handlesig(cs, TARGET_SIGTRAP); - if (trapnr) { - info.si_signo = trapnr; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - g_assert_not_reached(); - } - process_pending_signals(env); - } -} - -#endif /* TARGET_OPENRISC */ - -#ifdef TARGET_SH4 -void cpu_loop(CPUSH4State *env) -{ - CPUState *cs = CPU(sh_env_get_cpu(env)); - int trapnr, ret; - target_siginfo_t info; - - while (1) { - bool arch_interrupt = true; - - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch (trapnr) { - case 0x160: - env->pc += 2; - ret = do_syscall(env, - env->gregs[3], - env->gregs[4], - env->gregs[5], - env->gregs[6], - env->gregs[7], - env->gregs[0], - env->gregs[1], - 0, 0); - if (ret == -TARGET_ERESTARTSYS) { - env->pc -= 2; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->gregs[0] = ret; - } - break; - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case EXCP_DEBUG: - { - int sig; - - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) { - info.si_signo = sig; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } else { - arch_interrupt = false; - } - } - break; - case 0xa0: - case 0xc0: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->tea; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - arch_interrupt = false; - break; - default: - printf ("Unhandled trap: 0x%x\n", trapnr); - cpu_dump_state(cs, stderr, fprintf, 0); - exit(EXIT_FAILURE); - } - process_pending_signals (env); - - /* Most of the traps imply an exception or interrupt, which - implies an REI instruction has been executed. Which means - that LDST (aka LOK_ADDR) should be cleared. But there are - a few exceptions for traps internal to QEMU. */ - if (arch_interrupt) { - env->lock_addr = -1; - } - } -} -#endif - -#ifdef TARGET_CRIS -void cpu_loop(CPUCRISState *env) -{ - CPUState *cs = CPU(cris_env_get_cpu(env)); - int trapnr, ret; - target_siginfo_t info; - - while (1) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch (trapnr) { - case 0xaa: - { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - /* XXX: check env->error_code */ - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->pregs[PR_EDA]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case EXCP_BREAK: - ret = do_syscall(env, - env->regs[9], - env->regs[10], - env->regs[11], - env->regs[12], - env->regs[13], - env->pregs[7], - env->pregs[11], - 0, 0); - if (ret == -TARGET_ERESTARTSYS) { - env->pc -= 2; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->regs[10] = ret; - } - break; - case EXCP_DEBUG: - { - int sig; - - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) - { - info.si_signo = sig; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - } - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - printf ("Unhandled trap: 0x%x\n", trapnr); - cpu_dump_state(cs, stderr, fprintf, 0); - exit(EXIT_FAILURE); - } - process_pending_signals (env); - } -} -#endif - -#ifdef TARGET_MICROBLAZE -void cpu_loop(CPUMBState *env) -{ - CPUState *cs = CPU(mb_env_get_cpu(env)); - int trapnr, ret; - target_siginfo_t info; - - while (1) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch (trapnr) { - case 0xaa: - { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - /* XXX: check env->error_code */ - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = 0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case EXCP_BREAK: - /* Return address is 4 bytes after the call. */ - env->regs[14] += 4; - env->sregs[SR_PC] = env->regs[14]; - ret = do_syscall(env, - env->regs[12], - env->regs[5], - env->regs[6], - env->regs[7], - env->regs[8], - env->regs[9], - env->regs[10], - 0, 0); - if (ret == -TARGET_ERESTARTSYS) { - /* Wind back to before the syscall. */ - env->sregs[SR_PC] -= 4; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->regs[3] = ret; - } - /* All syscall exits result in guest r14 being equal to the - * PC we return to, because the kernel syscall exit "rtbd" does - * this. (This is true even for sigreturn(); note that r14 is - * not a userspace-usable register, as the kernel may clobber it - * at any point.) - */ - env->regs[14] = env->sregs[SR_PC]; - break; - case EXCP_HW_EXCP: - env->regs[17] = env->sregs[SR_PC] + 4; - if (env->iflags & D_FLAG) { - env->sregs[SR_ESR] |= 1 << 12; - env->sregs[SR_PC] -= 4; - /* FIXME: if branch was immed, replay the imm as well. */ - } - - env->iflags &= ~(IMM_FLAG | D_FLAG); - - switch (env->sregs[SR_ESR] & 31) { - case ESR_EC_DIVZERO: - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - info.si_code = TARGET_FPE_FLTDIV; - info._sifields._sigfault._addr = 0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case ESR_EC_FPU: - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - if (env->sregs[SR_FSR] & FSR_IO) { - info.si_code = TARGET_FPE_FLTINV; - } - if (env->sregs[SR_FSR] & FSR_DZ) { - info.si_code = TARGET_FPE_FLTDIV; - } - info._sifields._sigfault._addr = 0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - default: - printf ("Unhandled hw-exception: 0x%x\n", - env->sregs[SR_ESR] & ESR_EC_MASK); - cpu_dump_state(cs, stderr, fprintf, 0); - exit(EXIT_FAILURE); - break; - } - break; - case EXCP_DEBUG: - { - int sig; - - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) - { - info.si_signo = sig; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - } - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - printf ("Unhandled trap: 0x%x\n", trapnr); - cpu_dump_state(cs, stderr, fprintf, 0); - exit(EXIT_FAILURE); - } - process_pending_signals (env); - } -} -#endif - -#ifdef TARGET_M68K - -void cpu_loop(CPUM68KState *env) -{ - CPUState *cs = CPU(m68k_env_get_cpu(env)); - int trapnr; - unsigned int n; - target_siginfo_t info; - TaskState *ts = cs->opaque; - - for(;;) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch(trapnr) { - case EXCP_ILLEGAL: - { - if (ts->sim_syscalls) { - uint16_t nr; - get_user_u16(nr, env->pc + 2); - env->pc += 4; - do_m68k_simcall(env, nr); - } else { - goto do_sigill; - } - } - break; - case EXCP_HALT_INSN: - /* Semihosing syscall. */ - env->pc += 4; - do_m68k_semihosting(env, env->dregs[0]); - break; - case EXCP_LINEA: - case EXCP_LINEF: - case EXCP_UNSUPPORTED: - do_sigill: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLOPN; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_CHK: - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - info.si_code = TARGET_FPE_INTOVF; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_DIV0: - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - info.si_code = TARGET_FPE_INTDIV; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_TRAP0: - { - abi_long ret; - ts->sim_syscalls = 0; - n = env->dregs[0]; - env->pc += 2; - ret = do_syscall(env, - n, - env->dregs[1], - env->dregs[2], - env->dregs[3], - env->dregs[4], - env->dregs[5], - env->aregs[0], - 0, 0); - if (ret == -TARGET_ERESTARTSYS) { - env->pc -= 2; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->dregs[0] = ret; - } - } - break; - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case EXCP_ACCESS: - { - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - /* XXX: check env->error_code */ - info.si_code = TARGET_SEGV_MAPERR; - info._sifields._sigfault._addr = env->mmu.ar; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - break; - case EXCP_DEBUG: - { - int sig; - - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) - { - info.si_signo = sig; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } - } - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); - abort(); - } - process_pending_signals(env); - } -} -#endif /* TARGET_M68K */ - -#ifdef TARGET_ALPHA -void cpu_loop(CPUAlphaState *env) -{ - CPUState *cs = CPU(alpha_env_get_cpu(env)); - int trapnr; - target_siginfo_t info; - abi_long sysret; - - while (1) { - bool arch_interrupt = true; - - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch (trapnr) { - case EXCP_RESET: - fprintf(stderr, "Reset requested. Exit\n"); - exit(EXIT_FAILURE); - break; - case EXCP_MCHK: - fprintf(stderr, "Machine check exception. Exit\n"); - exit(EXIT_FAILURE); - break; - case EXCP_SMP_INTERRUPT: - case EXCP_CLK_INTERRUPT: - case EXCP_DEV_INTERRUPT: - fprintf(stderr, "External interrupt. Exit\n"); - exit(EXIT_FAILURE); - break; - case EXCP_MMFAULT: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = (page_get_flags(env->trap_arg0) & PAGE_VALID - ? TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR); - info._sifields._sigfault._addr = env->trap_arg0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_UNALIGN: - info.si_signo = TARGET_SIGBUS; - info.si_errno = 0; - info.si_code = TARGET_BUS_ADRALN; - info._sifields._sigfault._addr = env->trap_arg0; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_OPCDEC: - do_sigill: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLOPC; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_ARITH: - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - info.si_code = TARGET_FPE_FLTINV; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_FEN: - /* No-op. Linux simply re-enables the FPU. */ - break; - case EXCP_CALL_PAL: - switch (env->error_code) { - case 0x80: - /* BPT */ - info.si_signo = TARGET_SIGTRAP; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case 0x81: - /* BUGCHK */ - info.si_signo = TARGET_SIGTRAP; - info.si_errno = 0; - info.si_code = 0; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case 0x83: - /* CALLSYS */ - trapnr = env->ir[IR_V0]; - sysret = do_syscall(env, trapnr, - env->ir[IR_A0], env->ir[IR_A1], - env->ir[IR_A2], env->ir[IR_A3], - env->ir[IR_A4], env->ir[IR_A5], - 0, 0); - if (sysret == -TARGET_ERESTARTSYS) { - env->pc -= 4; - break; - } - if (sysret == -TARGET_QEMU_ESIGRETURN) { - break; - } - /* Syscall writes 0 to V0 to bypass error check, similar - to how this is handled internal to Linux kernel. - (Ab)use trapnr temporarily as boolean indicating error. */ - trapnr = (env->ir[IR_V0] != 0 && sysret < 0); - env->ir[IR_V0] = (trapnr ? -sysret : sysret); - env->ir[IR_A3] = trapnr; - break; - case 0x86: - /* IMB */ - /* ??? We can probably elide the code using page_unprotect - that is checking for self-modifying code. Instead we - could simply call tb_flush here. Until we work out the - changes required to turn off the extra write protection, - this can be a no-op. */ - break; - case 0x9E: - /* RDUNIQUE */ - /* Handled in the translator for usermode. */ - abort(); - case 0x9F: - /* WRUNIQUE */ - /* Handled in the translator for usermode. */ - abort(); - case 0xAA: - /* GENTRAP */ - info.si_signo = TARGET_SIGFPE; - switch (env->ir[IR_A0]) { - case TARGET_GEN_INTOVF: - info.si_code = TARGET_FPE_INTOVF; - break; - case TARGET_GEN_INTDIV: - info.si_code = TARGET_FPE_INTDIV; - break; - case TARGET_GEN_FLTOVF: - info.si_code = TARGET_FPE_FLTOVF; - break; - case TARGET_GEN_FLTUND: - info.si_code = TARGET_FPE_FLTUND; - break; - case TARGET_GEN_FLTINV: - info.si_code = TARGET_FPE_FLTINV; - break; - case TARGET_GEN_FLTINE: - info.si_code = TARGET_FPE_FLTRES; - break; - case TARGET_GEN_ROPRAND: - info.si_code = 0; - break; - default: - info.si_signo = TARGET_SIGTRAP; - info.si_code = 0; - break; - } - info.si_errno = 0; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - default: - goto do_sigill; - } - break; - case EXCP_DEBUG: - info.si_signo = gdb_handlesig(cs, TARGET_SIGTRAP); - if (info.si_signo) { - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - } else { - arch_interrupt = false; - } - break; - case EXCP_INTERRUPT: - /* Just indicate that signals should be handled asap. */ - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - arch_interrupt = false; - break; - default: - printf ("Unhandled trap: 0x%x\n", trapnr); - cpu_dump_state(cs, stderr, fprintf, 0); - exit(EXIT_FAILURE); - } - process_pending_signals (env); - - /* Most of the traps imply a transition through PALcode, which - implies an REI instruction has been executed. Which means - that RX and LOCK_ADDR should be cleared. But there are a - few exceptions for traps internal to QEMU. */ - if (arch_interrupt) { - env->flags &= ~ENV_FLAG_RX_FLAG; - env->lock_addr = -1; - } - } -} -#endif /* TARGET_ALPHA */ - -#ifdef TARGET_S390X - -/* s390x masks the fault address it reports in si_addr for SIGSEGV and SIGBUS */ -#define S390X_FAIL_ADDR_MASK -4096LL - -void cpu_loop(CPUS390XState *env) -{ - CPUState *cs = CPU(s390_env_get_cpu(env)); - int trapnr, n, sig; - target_siginfo_t info; - target_ulong addr; - abi_long ret; - - while (1) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch (trapnr) { - case EXCP_INTERRUPT: - /* Just indicate that signals should be handled asap. */ - break; - - case EXCP_SVC: - n = env->int_svc_code; - if (!n) { - /* syscalls > 255 */ - n = env->regs[1]; - } - env->psw.addr += env->int_svc_ilen; - ret = do_syscall(env, n, env->regs[2], env->regs[3], - env->regs[4], env->regs[5], - env->regs[6], env->regs[7], 0, 0); - if (ret == -TARGET_ERESTARTSYS) { - env->psw.addr -= env->int_svc_ilen; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->regs[2] = ret; - } - break; - - case EXCP_DEBUG: - sig = gdb_handlesig(cs, TARGET_SIGTRAP); - if (sig) { - n = TARGET_TRAP_BRKPT; - goto do_signal_pc; - } - break; - case EXCP_PGM: - n = env->int_pgm_code; - switch (n) { - case PGM_OPERATION: - case PGM_PRIVILEGED: - sig = TARGET_SIGILL; - n = TARGET_ILL_ILLOPC; - goto do_signal_pc; - case PGM_PROTECTION: - case PGM_ADDRESSING: - sig = TARGET_SIGSEGV; - /* XXX: check env->error_code */ - n = TARGET_SEGV_MAPERR; - addr = env->__excp_addr & S390X_FAIL_ADDR_MASK; - goto do_signal; - case PGM_EXECUTE: - case PGM_SPECIFICATION: - case PGM_SPECIAL_OP: - case PGM_OPERAND: - do_sigill_opn: - sig = TARGET_SIGILL; - n = TARGET_ILL_ILLOPN; - goto do_signal_pc; - - case PGM_FIXPT_OVERFLOW: - sig = TARGET_SIGFPE; - n = TARGET_FPE_INTOVF; - goto do_signal_pc; - case PGM_FIXPT_DIVIDE: - sig = TARGET_SIGFPE; - n = TARGET_FPE_INTDIV; - goto do_signal_pc; - - case PGM_DATA: - n = (env->fpc >> 8) & 0xff; - if (n == 0xff) { - /* compare-and-trap */ - goto do_sigill_opn; - } else { - /* An IEEE exception, simulated or otherwise. */ - if (n & 0x80) { - n = TARGET_FPE_FLTINV; - } else if (n & 0x40) { - n = TARGET_FPE_FLTDIV; - } else if (n & 0x20) { - n = TARGET_FPE_FLTOVF; - } else if (n & 0x10) { - n = TARGET_FPE_FLTUND; - } else if (n & 0x08) { - n = TARGET_FPE_FLTRES; - } else { - /* ??? Quantum exception; BFP, DFP error. */ - goto do_sigill_opn; - } - sig = TARGET_SIGFPE; - goto do_signal_pc; - } - - default: - fprintf(stderr, "Unhandled program exception: %#x\n", n); - cpu_dump_state(cs, stderr, fprintf, 0); - exit(EXIT_FAILURE); - } - break; - - do_signal_pc: - addr = env->psw.addr; - do_signal: - info.si_signo = sig; - info.si_errno = 0; - info.si_code = n; - info._sifields._sigfault._addr = addr; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr); - cpu_dump_state(cs, stderr, fprintf, 0); - exit(EXIT_FAILURE); - } - process_pending_signals (env); - } -} - -#endif /* TARGET_S390X */ - -#ifdef TARGET_TILEGX - -static void gen_sigill_reg(CPUTLGState *env) -{ - target_siginfo_t info; - - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_PRVREG; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); -} - -static void do_signal(CPUTLGState *env, int signo, int sigcode) -{ - target_siginfo_t info; - - info.si_signo = signo; - info.si_errno = 0; - info._sifields._sigfault._addr = env->pc; - - if (signo == TARGET_SIGSEGV) { - /* The passed in sigcode is a dummy; check for a page mapping - and pass either MAPERR or ACCERR. */ - target_ulong addr = env->excaddr; - info._sifields._sigfault._addr = addr; - if (page_check_range(addr, 1, PAGE_VALID) < 0) { - sigcode = TARGET_SEGV_MAPERR; - } else { - sigcode = TARGET_SEGV_ACCERR; - } - } - info.si_code = sigcode; - - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); -} - -static void gen_sigsegv_maperr(CPUTLGState *env, target_ulong addr) -{ - env->excaddr = addr; - do_signal(env, TARGET_SIGSEGV, 0); -} - -static void set_regval(CPUTLGState *env, uint8_t reg, uint64_t val) -{ - if (unlikely(reg >= TILEGX_R_COUNT)) { - switch (reg) { - case TILEGX_R_SN: - case TILEGX_R_ZERO: - return; - case TILEGX_R_IDN0: - case TILEGX_R_IDN1: - case TILEGX_R_UDN0: - case TILEGX_R_UDN1: - case TILEGX_R_UDN2: - case TILEGX_R_UDN3: - gen_sigill_reg(env); - return; - default: - g_assert_not_reached(); - } - } - env->regs[reg] = val; -} - -/* - * Compare the 8-byte contents of the CmpValue SPR with the 8-byte value in - * memory at the address held in the first source register. If the values are - * not equal, then no memory operation is performed. If the values are equal, - * the 8-byte quantity from the second source register is written into memory - * at the address held in the first source register. In either case, the result - * of the instruction is the value read from memory. The compare and write to - * memory are atomic and thus can be used for synchronization purposes. This - * instruction only operates for addresses aligned to a 8-byte boundary. - * Unaligned memory access causes an Unaligned Data Reference interrupt. - * - * Functional Description (64-bit) - * uint64_t memVal = memoryReadDoubleWord (rf[SrcA]); - * rf[Dest] = memVal; - * if (memVal == SPR[CmpValueSPR]) - * memoryWriteDoubleWord (rf[SrcA], rf[SrcB]); - * - * Functional Description (32-bit) - * uint64_t memVal = signExtend32 (memoryReadWord (rf[SrcA])); - * rf[Dest] = memVal; - * if (memVal == signExtend32 (SPR[CmpValueSPR])) - * memoryWriteWord (rf[SrcA], rf[SrcB]); - * - * - * This function also processes exch and exch4 which need not process SPR. - */ -static void do_exch(CPUTLGState *env, bool quad, bool cmp) -{ - target_ulong addr; - target_long val, sprval; - - start_exclusive(); - - addr = env->atomic_srca; - if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) { - goto sigsegv_maperr; - } - - if (cmp) { - if (quad) { - sprval = env->spregs[TILEGX_SPR_CMPEXCH]; - } else { - sprval = sextract64(env->spregs[TILEGX_SPR_CMPEXCH], 0, 32); - } - } - - if (!cmp || val == sprval) { - target_long valb = env->atomic_srcb; - if (quad ? put_user_u64(valb, addr) : put_user_u32(valb, addr)) { - goto sigsegv_maperr; - } - } - - set_regval(env, env->atomic_dstr, val); - end_exclusive(); - return; - - sigsegv_maperr: - end_exclusive(); - gen_sigsegv_maperr(env, addr); -} - -static void do_fetch(CPUTLGState *env, int trapnr, bool quad) -{ - int8_t write = 1; - target_ulong addr; - target_long val, valb; - - start_exclusive(); - - addr = env->atomic_srca; - valb = env->atomic_srcb; - if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) { - goto sigsegv_maperr; - } - - switch (trapnr) { - case TILEGX_EXCP_OPCODE_FETCHADD: - case TILEGX_EXCP_OPCODE_FETCHADD4: - valb += val; - break; - case TILEGX_EXCP_OPCODE_FETCHADDGEZ: - valb += val; - if (valb < 0) { - write = 0; - } - break; - case TILEGX_EXCP_OPCODE_FETCHADDGEZ4: - valb += val; - if ((int32_t)valb < 0) { - write = 0; - } - break; - case TILEGX_EXCP_OPCODE_FETCHAND: - case TILEGX_EXCP_OPCODE_FETCHAND4: - valb &= val; - break; - case TILEGX_EXCP_OPCODE_FETCHOR: - case TILEGX_EXCP_OPCODE_FETCHOR4: - valb |= val; - break; - default: - g_assert_not_reached(); - } - - if (write) { - if (quad ? put_user_u64(valb, addr) : put_user_u32(valb, addr)) { - goto sigsegv_maperr; - } - } - - set_regval(env, env->atomic_dstr, val); - end_exclusive(); - return; - - sigsegv_maperr: - end_exclusive(); - gen_sigsegv_maperr(env, addr); -} - -void cpu_loop(CPUTLGState *env) -{ - CPUState *cs = CPU(tilegx_env_get_cpu(env)); - int trapnr; - - while (1) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch (trapnr) { - case TILEGX_EXCP_SYSCALL: - { - abi_ulong ret = do_syscall(env, env->regs[TILEGX_R_NR], - env->regs[0], env->regs[1], - env->regs[2], env->regs[3], - env->regs[4], env->regs[5], - env->regs[6], env->regs[7]); - if (ret == -TARGET_ERESTARTSYS) { - env->pc -= 8; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->regs[TILEGX_R_RE] = ret; - env->regs[TILEGX_R_ERR] = TILEGX_IS_ERRNO(ret) ? -ret : 0; - } - break; - } - case TILEGX_EXCP_OPCODE_EXCH: - do_exch(env, true, false); - break; - case TILEGX_EXCP_OPCODE_EXCH4: - do_exch(env, false, false); - break; - case TILEGX_EXCP_OPCODE_CMPEXCH: - do_exch(env, true, true); - break; - case TILEGX_EXCP_OPCODE_CMPEXCH4: - do_exch(env, false, true); - break; - case TILEGX_EXCP_OPCODE_FETCHADD: - case TILEGX_EXCP_OPCODE_FETCHADDGEZ: - case TILEGX_EXCP_OPCODE_FETCHAND: - case TILEGX_EXCP_OPCODE_FETCHOR: - do_fetch(env, trapnr, true); - break; - case TILEGX_EXCP_OPCODE_FETCHADD4: - case TILEGX_EXCP_OPCODE_FETCHADDGEZ4: - case TILEGX_EXCP_OPCODE_FETCHAND4: - case TILEGX_EXCP_OPCODE_FETCHOR4: - do_fetch(env, trapnr, false); - break; - case TILEGX_EXCP_SIGNAL: - do_signal(env, env->signo, env->sigcode); - break; - case TILEGX_EXCP_REG_IDN_ACCESS: - case TILEGX_EXCP_REG_UDN_ACCESS: - gen_sigill_reg(env); - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - default: - fprintf(stderr, "trapnr is %d[0x%x].\n", trapnr, trapnr); - g_assert_not_reached(); - } - process_pending_signals(env); - } -} - -#endif - -#ifdef TARGET_RISCV - -void cpu_loop(CPURISCVState *env) -{ - CPUState *cs = CPU(riscv_env_get_cpu(env)); - int trapnr, signum, sigcode; - target_ulong sigaddr; - target_ulong ret; - - for (;;) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - signum = 0; - sigcode = 0; - sigaddr = 0; - - switch (trapnr) { - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - case EXCP_ATOMIC: - cpu_exec_step_atomic(cs); - break; - case RISCV_EXCP_U_ECALL: - env->pc += 4; - if (env->gpr[xA7] == TARGET_NR_arch_specific_syscall + 15) { - /* riscv_flush_icache_syscall is a no-op in QEMU as - self-modifying code is automatically detected */ - ret = 0; - } else { - ret = do_syscall(env, - env->gpr[xA7], - env->gpr[xA0], - env->gpr[xA1], - env->gpr[xA2], - env->gpr[xA3], - env->gpr[xA4], - env->gpr[xA5], - 0, 0); - } - if (ret == -TARGET_ERESTARTSYS) { - env->pc -= 4; - } else if (ret != -TARGET_QEMU_ESIGRETURN) { - env->gpr[xA0] = ret; - } - if (cs->singlestep_enabled) { - goto gdbstep; - } - break; - case RISCV_EXCP_ILLEGAL_INST: - signum = TARGET_SIGILL; - sigcode = TARGET_ILL_ILLOPC; - break; - case RISCV_EXCP_BREAKPOINT: - signum = TARGET_SIGTRAP; - sigcode = TARGET_TRAP_BRKPT; - sigaddr = env->pc; - break; - case RISCV_EXCP_INST_PAGE_FAULT: - case RISCV_EXCP_LOAD_PAGE_FAULT: - case RISCV_EXCP_STORE_PAGE_FAULT: - signum = TARGET_SIGSEGV; - sigcode = TARGET_SEGV_MAPERR; - break; - case EXCP_DEBUG: - gdbstep: - signum = gdb_handlesig(cs, TARGET_SIGTRAP); - sigcode = TARGET_TRAP_BRKPT; - break; - default: - EXCP_DUMP(env, "\nqemu: unhandled CPU exception %#x - aborting\n", - trapnr); - exit(EXIT_FAILURE); - } - - if (signum) { - target_siginfo_t info = { - .si_signo = signum, - .si_errno = 0, - .si_code = sigcode, - ._sifields._sigfault._addr = sigaddr - }; - queue_signal(env, info.si_signo, QEMU_SI_KILL, &info); - } - - process_pending_signals(env); - } -} - -#endif /* TARGET_RISCV */ - -#ifdef TARGET_HPPA - -static abi_ulong hppa_lws(CPUHPPAState *env) -{ - uint32_t which = env->gr[20]; - abi_ulong addr = env->gr[26]; - abi_ulong old = env->gr[25]; - abi_ulong new = env->gr[24]; - abi_ulong size, ret; - - switch (which) { - default: - return -TARGET_ENOSYS; - - case 0: /* elf32 atomic 32bit cmpxchg */ - if ((addr & 3) || !access_ok(VERIFY_WRITE, addr, 4)) { - return -TARGET_EFAULT; - } - old = tswap32(old); - new = tswap32(new); - ret = atomic_cmpxchg((uint32_t *)g2h(addr), old, new); - ret = tswap32(ret); - break; - - case 2: /* elf32 atomic "new" cmpxchg */ - size = env->gr[23]; - if (size >= 4) { - return -TARGET_ENOSYS; - } - if (((addr | old | new) & ((1 << size) - 1)) - || !access_ok(VERIFY_WRITE, addr, 1 << size) - || !access_ok(VERIFY_READ, old, 1 << size) - || !access_ok(VERIFY_READ, new, 1 << size)) { - return -TARGET_EFAULT; - } - /* Note that below we use host-endian loads so that the cmpxchg - can be host-endian as well. */ - switch (size) { - case 0: - old = *(uint8_t *)g2h(old); - new = *(uint8_t *)g2h(new); - ret = atomic_cmpxchg((uint8_t *)g2h(addr), old, new); - ret = ret != old; - break; - case 1: - old = *(uint16_t *)g2h(old); - new = *(uint16_t *)g2h(new); - ret = atomic_cmpxchg((uint16_t *)g2h(addr), old, new); - ret = ret != old; - break; - case 2: - old = *(uint32_t *)g2h(old); - new = *(uint32_t *)g2h(new); - ret = atomic_cmpxchg((uint32_t *)g2h(addr), old, new); - ret = ret != old; - break; - case 3: - { - uint64_t o64, n64, r64; - o64 = *(uint64_t *)g2h(old); - n64 = *(uint64_t *)g2h(new); -#ifdef CONFIG_ATOMIC64 - r64 = atomic_cmpxchg__nocheck((uint64_t *)g2h(addr), o64, n64); - ret = r64 != o64; -#else - start_exclusive(); - r64 = *(uint64_t *)g2h(addr); - ret = 1; - if (r64 == o64) { - *(uint64_t *)g2h(addr) = n64; - ret = 0; - } - end_exclusive(); -#endif - } - break; - } - break; - } - - env->gr[28] = ret; - return 0; -} - -void cpu_loop(CPUHPPAState *env) -{ - CPUState *cs = CPU(hppa_env_get_cpu(env)); - target_siginfo_t info; - abi_ulong ret; - int trapnr; - - while (1) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - switch (trapnr) { - case EXCP_SYSCALL: - ret = do_syscall(env, env->gr[20], - env->gr[26], env->gr[25], - env->gr[24], env->gr[23], - env->gr[22], env->gr[21], 0, 0); - switch (ret) { - default: - env->gr[28] = ret; - /* We arrived here by faking the gateway page. Return. */ - env->iaoq_f = env->gr[31]; - env->iaoq_b = env->gr[31] + 4; - break; - case -TARGET_ERESTARTSYS: - case -TARGET_QEMU_ESIGRETURN: - break; - } - break; - case EXCP_SYSCALL_LWS: - env->gr[21] = hppa_lws(env); - /* We arrived here by faking the gateway page. Return. */ - env->iaoq_f = env->gr[31]; - env->iaoq_b = env->gr[31] + 4; - break; - case EXCP_ITLB_MISS: - case EXCP_DTLB_MISS: - case EXCP_NA_ITLB_MISS: - case EXCP_NA_DTLB_MISS: - case EXCP_IMP: - case EXCP_DMP: - case EXCP_DMB: - case EXCP_PAGE_REF: - case EXCP_DMAR: - case EXCP_DMPI: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_ACCERR; - info._sifields._sigfault._addr = env->cr[CR_IOR]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_UNALIGN: - info.si_signo = TARGET_SIGBUS; - info.si_errno = 0; - info.si_code = 0; - info._sifields._sigfault._addr = env->cr[CR_IOR]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_ILL: - case EXCP_PRIV_OPR: - case EXCP_PRIV_REG: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = TARGET_ILL_ILLOPN; - info._sifields._sigfault._addr = env->iaoq_f; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_OVERFLOW: - case EXCP_COND: - case EXCP_ASSIST: - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - info.si_code = 0; - info._sifields._sigfault._addr = env->iaoq_f; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - case EXCP_DEBUG: - trapnr = gdb_handlesig(cs, TARGET_SIGTRAP); - if (trapnr) { - info.si_signo = trapnr; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, trapnr, QEMU_SI_FAULT, &info); - } - break; - case EXCP_INTERRUPT: - /* just indicate that signals should be handled asap */ - break; - default: - g_assert_not_reached(); - } - process_pending_signals(env); - } -} - -#endif /* TARGET_HPPA */ - -#ifdef TARGET_XTENSA - -static void xtensa_rfw(CPUXtensaState *env) -{ - xtensa_restore_owb(env); - env->pc = env->sregs[EPC1]; -} - -static void xtensa_rfwu(CPUXtensaState *env) -{ - env->sregs[WINDOW_START] |= (1 << env->sregs[WINDOW_BASE]); - xtensa_rfw(env); -} - -static void xtensa_rfwo(CPUXtensaState *env) -{ - env->sregs[WINDOW_START] &= ~(1 << env->sregs[WINDOW_BASE]); - xtensa_rfw(env); -} - -static void xtensa_overflow4(CPUXtensaState *env) -{ - put_user_ual(env->regs[0], env->regs[5] - 16); - put_user_ual(env->regs[1], env->regs[5] - 12); - put_user_ual(env->regs[2], env->regs[5] - 8); - put_user_ual(env->regs[3], env->regs[5] - 4); - xtensa_rfwo(env); -} - -static void xtensa_underflow4(CPUXtensaState *env) -{ - get_user_ual(env->regs[0], env->regs[5] - 16); - get_user_ual(env->regs[1], env->regs[5] - 12); - get_user_ual(env->regs[2], env->regs[5] - 8); - get_user_ual(env->regs[3], env->regs[5] - 4); - xtensa_rfwu(env); -} - -static void xtensa_overflow8(CPUXtensaState *env) -{ - put_user_ual(env->regs[0], env->regs[9] - 16); - get_user_ual(env->regs[0], env->regs[1] - 12); - put_user_ual(env->regs[1], env->regs[9] - 12); - put_user_ual(env->regs[2], env->regs[9] - 8); - put_user_ual(env->regs[3], env->regs[9] - 4); - put_user_ual(env->regs[4], env->regs[0] - 32); - put_user_ual(env->regs[5], env->regs[0] - 28); - put_user_ual(env->regs[6], env->regs[0] - 24); - put_user_ual(env->regs[7], env->regs[0] - 20); - xtensa_rfwo(env); -} - -static void xtensa_underflow8(CPUXtensaState *env) -{ - get_user_ual(env->regs[0], env->regs[9] - 16); - get_user_ual(env->regs[1], env->regs[9] - 12); - get_user_ual(env->regs[2], env->regs[9] - 8); - get_user_ual(env->regs[7], env->regs[1] - 12); - get_user_ual(env->regs[3], env->regs[9] - 4); - get_user_ual(env->regs[4], env->regs[7] - 32); - get_user_ual(env->regs[5], env->regs[7] - 28); - get_user_ual(env->regs[6], env->regs[7] - 24); - get_user_ual(env->regs[7], env->regs[7] - 20); - xtensa_rfwu(env); -} - -static void xtensa_overflow12(CPUXtensaState *env) -{ - put_user_ual(env->regs[0], env->regs[13] - 16); - get_user_ual(env->regs[0], env->regs[1] - 12); - put_user_ual(env->regs[1], env->regs[13] - 12); - put_user_ual(env->regs[2], env->regs[13] - 8); - put_user_ual(env->regs[3], env->regs[13] - 4); - put_user_ual(env->regs[4], env->regs[0] - 48); - put_user_ual(env->regs[5], env->regs[0] - 44); - put_user_ual(env->regs[6], env->regs[0] - 40); - put_user_ual(env->regs[7], env->regs[0] - 36); - put_user_ual(env->regs[8], env->regs[0] - 32); - put_user_ual(env->regs[9], env->regs[0] - 28); - put_user_ual(env->regs[10], env->regs[0] - 24); - put_user_ual(env->regs[11], env->regs[0] - 20); - xtensa_rfwo(env); -} - -static void xtensa_underflow12(CPUXtensaState *env) -{ - get_user_ual(env->regs[0], env->regs[13] - 16); - get_user_ual(env->regs[1], env->regs[13] - 12); - get_user_ual(env->regs[2], env->regs[13] - 8); - get_user_ual(env->regs[11], env->regs[1] - 12); - get_user_ual(env->regs[3], env->regs[13] - 4); - get_user_ual(env->regs[4], env->regs[11] - 48); - get_user_ual(env->regs[5], env->regs[11] - 44); - get_user_ual(env->regs[6], env->regs[11] - 40); - get_user_ual(env->regs[7], env->regs[11] - 36); - get_user_ual(env->regs[8], env->regs[11] - 32); - get_user_ual(env->regs[9], env->regs[11] - 28); - get_user_ual(env->regs[10], env->regs[11] - 24); - get_user_ual(env->regs[11], env->regs[11] - 20); - xtensa_rfwu(env); -} - -void cpu_loop(CPUXtensaState *env) -{ - CPUState *cs = CPU(xtensa_env_get_cpu(env)); - target_siginfo_t info; - abi_ulong ret; - int trapnr; - - while (1) { - cpu_exec_start(cs); - trapnr = cpu_exec(cs); - cpu_exec_end(cs); - process_queued_cpu_work(cs); - - env->sregs[PS] &= ~PS_EXCM; - switch (trapnr) { - case EXCP_INTERRUPT: - break; - - case EXC_WINDOW_OVERFLOW4: - xtensa_overflow4(env); - break; - case EXC_WINDOW_UNDERFLOW4: - xtensa_underflow4(env); - break; - case EXC_WINDOW_OVERFLOW8: - xtensa_overflow8(env); - break; - case EXC_WINDOW_UNDERFLOW8: - xtensa_underflow8(env); - break; - case EXC_WINDOW_OVERFLOW12: - xtensa_overflow12(env); - break; - case EXC_WINDOW_UNDERFLOW12: - xtensa_underflow12(env); - break; - - case EXC_USER: - switch (env->sregs[EXCCAUSE]) { - case ILLEGAL_INSTRUCTION_CAUSE: - case PRIVILEGED_CAUSE: - info.si_signo = TARGET_SIGILL; - info.si_errno = 0; - info.si_code = - env->sregs[EXCCAUSE] == ILLEGAL_INSTRUCTION_CAUSE ? - TARGET_ILL_ILLOPC : TARGET_ILL_PRVOPC; - info._sifields._sigfault._addr = env->sregs[EPC1]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - - case SYSCALL_CAUSE: - env->pc += 3; - ret = do_syscall(env, env->regs[2], - env->regs[6], env->regs[3], - env->regs[4], env->regs[5], - env->regs[8], env->regs[9], 0, 0); - switch (ret) { - default: - env->regs[2] = ret; - break; - - case -TARGET_ERESTARTSYS: - case -TARGET_QEMU_ESIGRETURN: - break; - } - break; - - case ALLOCA_CAUSE: - env->sregs[PS] = deposit32(env->sregs[PS], - PS_OWB_SHIFT, - PS_OWB_LEN, - env->sregs[WINDOW_BASE]); - - switch (env->regs[0] & 0xc0000000) { - case 0x00000000: - case 0x40000000: - xtensa_rotate_window(env, -1); - xtensa_underflow4(env); - break; - - case 0x80000000: - xtensa_rotate_window(env, -2); - xtensa_underflow8(env); - break; - - case 0xc0000000: - xtensa_rotate_window(env, -3); - xtensa_underflow12(env); - break; - } - break; - - case INTEGER_DIVIDE_BY_ZERO_CAUSE: - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - info.si_code = TARGET_FPE_INTDIV; - info._sifields._sigfault._addr = env->sregs[EPC1]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - - case LOAD_PROHIBITED_CAUSE: - case STORE_PROHIBITED_CAUSE: - info.si_signo = TARGET_SIGSEGV; - info.si_errno = 0; - info.si_code = TARGET_SEGV_ACCERR; - info._sifields._sigfault._addr = env->sregs[EXCVADDR]; - queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); - break; - - default: - fprintf(stderr, "exccause = %d\n", env->sregs[EXCCAUSE]); - g_assert_not_reached(); - } - break; - case EXCP_DEBUG: - trapnr = gdb_handlesig(cs, TARGET_SIGTRAP); - if (trapnr) { - info.si_signo = trapnr; - info.si_errno = 0; - info.si_code = TARGET_TRAP_BRKPT; - queue_signal(env, trapnr, QEMU_SI_FAULT, &info); - } - break; - case EXC_DEBUG: - default: - fprintf(stderr, "trapnr = %d\n", trapnr); - g_assert_not_reached(); - } - process_pending_signals(env); - } -} - -#endif /* TARGET_XTENSA */ +#include "cpu_loop.inc.c" __thread CPUState *thread_cpu; diff --git a/linux-user/microblaze/cpu_loop.inc.c b/linux-user/microblaze/cpu_loop.inc.c new file mode 100644 index 0000000000..91f0e15989 --- /dev/null +++ b/linux-user/microblaze/cpu_loop.inc.c @@ -0,0 +1,116 @@ +void cpu_loop(CPUMBState *env) +{ + CPUState *cs = CPU(mb_env_get_cpu(env)); + int trapnr, ret; + target_siginfo_t info; + + while (1) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch (trapnr) { + case 0xaa: + { + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = 0; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_BREAK: + /* Return address is 4 bytes after the call. */ + env->regs[14] += 4; + env->sregs[SR_PC] = env->regs[14]; + ret = do_syscall(env, + env->regs[12], + env->regs[5], + env->regs[6], + env->regs[7], + env->regs[8], + env->regs[9], + env->regs[10], + 0, 0); + if (ret == -TARGET_ERESTARTSYS) { + /* Wind back to before the syscall. */ + env->sregs[SR_PC] -= 4; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + env->regs[3] = ret; + } + /* All syscall exits result in guest r14 being equal to the + * PC we return to, because the kernel syscall exit "rtbd" does + * this. (This is true even for sigreturn(); note that r14 is + * not a userspace-usable register, as the kernel may clobber it + * at any point.) + */ + env->regs[14] = env->sregs[SR_PC]; + break; + case EXCP_HW_EXCP: + env->regs[17] = env->sregs[SR_PC] + 4; + if (env->iflags & D_FLAG) { + env->sregs[SR_ESR] |= 1 << 12; + env->sregs[SR_PC] -= 4; + /* FIXME: if branch was immed, replay the imm as well. */ + } + + env->iflags &= ~(IMM_FLAG | D_FLAG); + + switch (env->sregs[SR_ESR] & 31) { + case ESR_EC_DIVZERO: + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + info.si_code = TARGET_FPE_FLTDIV; + info._sifields._sigfault._addr = 0; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case ESR_EC_FPU: + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + if (env->sregs[SR_FSR] & FSR_IO) { + info.si_code = TARGET_FPE_FLTINV; + } + if (env->sregs[SR_FSR] & FSR_DZ) { + info.si_code = TARGET_FPE_FLTDIV; + } + info._sifields._sigfault._addr = 0; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + default: + printf ("Unhandled hw-exception: 0x%x\n", + env->sregs[SR_ESR] & ESR_EC_MASK); + cpu_dump_state(cs, stderr, fprintf, 0); + exit(EXIT_FAILURE); + break; + } + break; + case EXCP_DEBUG: + { + int sig; + + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) + { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + } + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: + printf ("Unhandled trap: 0x%x\n", trapnr); + cpu_dump_state(cs, stderr, fprintf, 0); + exit(EXIT_FAILURE); + } + process_pending_signals (env); + } +} diff --git a/linux-user/mips/cpu_loop.inc.c b/linux-user/mips/cpu_loop.inc.c new file mode 100644 index 0000000000..85d793d82e --- /dev/null +++ b/linux-user/mips/cpu_loop.inc.c @@ -0,0 +1,695 @@ +# ifdef TARGET_ABI_MIPSO32 +# define MIPS_SYS(name, args) args, +static const uint8_t mips_syscall_args[] = { + MIPS_SYS(sys_syscall , 8) /* 4000 */ + MIPS_SYS(sys_exit , 1) + MIPS_SYS(sys_fork , 0) + MIPS_SYS(sys_read , 3) + MIPS_SYS(sys_write , 3) + MIPS_SYS(sys_open , 3) /* 4005 */ + MIPS_SYS(sys_close , 1) + MIPS_SYS(sys_waitpid , 3) + MIPS_SYS(sys_creat , 2) + MIPS_SYS(sys_link , 2) + MIPS_SYS(sys_unlink , 1) /* 4010 */ + MIPS_SYS(sys_execve , 0) + MIPS_SYS(sys_chdir , 1) + MIPS_SYS(sys_time , 1) + MIPS_SYS(sys_mknod , 3) + MIPS_SYS(sys_chmod , 2) /* 4015 */ + MIPS_SYS(sys_lchown , 3) + MIPS_SYS(sys_ni_syscall , 0) + MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */ + MIPS_SYS(sys_lseek , 3) + MIPS_SYS(sys_getpid , 0) /* 4020 */ + MIPS_SYS(sys_mount , 5) + MIPS_SYS(sys_umount , 1) + MIPS_SYS(sys_setuid , 1) + MIPS_SYS(sys_getuid , 0) + MIPS_SYS(sys_stime , 1) /* 4025 */ + MIPS_SYS(sys_ptrace , 4) + MIPS_SYS(sys_alarm , 1) + MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */ + MIPS_SYS(sys_pause , 0) + MIPS_SYS(sys_utime , 2) /* 4030 */ + MIPS_SYS(sys_ni_syscall , 0) + MIPS_SYS(sys_ni_syscall , 0) + MIPS_SYS(sys_access , 2) + MIPS_SYS(sys_nice , 1) + MIPS_SYS(sys_ni_syscall , 0) /* 4035 */ + MIPS_SYS(sys_sync , 0) + MIPS_SYS(sys_kill , 2) + MIPS_SYS(sys_rename , 2) + MIPS_SYS(sys_mkdir , 2) + MIPS_SYS(sys_rmdir , 1) /* 4040 */ + MIPS_SYS(sys_dup , 1) + MIPS_SYS(sys_pipe , 0) + MIPS_SYS(sys_times , 1) + MIPS_SYS(sys_ni_syscall , 0) + MIPS_SYS(sys_brk , 1) /* 4045 */ + MIPS_SYS(sys_setgid , 1) + MIPS_SYS(sys_getgid , 0) + MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */ + MIPS_SYS(sys_geteuid , 0) + MIPS_SYS(sys_getegid , 0) /* 4050 */ + MIPS_SYS(sys_acct , 0) + MIPS_SYS(sys_umount2 , 2) + MIPS_SYS(sys_ni_syscall , 0) + MIPS_SYS(sys_ioctl , 3) + MIPS_SYS(sys_fcntl , 3) /* 4055 */ + MIPS_SYS(sys_ni_syscall , 2) + MIPS_SYS(sys_setpgid , 2) + MIPS_SYS(sys_ni_syscall , 0) + MIPS_SYS(sys_olduname , 1) + MIPS_SYS(sys_umask , 1) /* 4060 */ + MIPS_SYS(sys_chroot , 1) + MIPS_SYS(sys_ustat , 2) + MIPS_SYS(sys_dup2 , 2) + MIPS_SYS(sys_getppid , 0) + MIPS_SYS(sys_getpgrp , 0) /* 4065 */ + MIPS_SYS(sys_setsid , 0) + MIPS_SYS(sys_sigaction , 3) + MIPS_SYS(sys_sgetmask , 0) + MIPS_SYS(sys_ssetmask , 1) + MIPS_SYS(sys_setreuid , 2) /* 4070 */ + MIPS_SYS(sys_setregid , 2) + MIPS_SYS(sys_sigsuspend , 0) + MIPS_SYS(sys_sigpending , 1) + MIPS_SYS(sys_sethostname , 2) + MIPS_SYS(sys_setrlimit , 2) /* 4075 */ + MIPS_SYS(sys_getrlimit , 2) + MIPS_SYS(sys_getrusage , 2) + MIPS_SYS(sys_gettimeofday, 2) + MIPS_SYS(sys_settimeofday, 2) + MIPS_SYS(sys_getgroups , 2) /* 4080 */ + MIPS_SYS(sys_setgroups , 2) + MIPS_SYS(sys_ni_syscall , 0) /* old_select */ + MIPS_SYS(sys_symlink , 2) + MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */ + MIPS_SYS(sys_readlink , 3) /* 4085 */ + MIPS_SYS(sys_uselib , 1) + MIPS_SYS(sys_swapon , 2) + MIPS_SYS(sys_reboot , 3) + MIPS_SYS(old_readdir , 3) + MIPS_SYS(old_mmap , 6) /* 4090 */ + MIPS_SYS(sys_munmap , 2) + MIPS_SYS(sys_truncate , 2) + MIPS_SYS(sys_ftruncate , 2) + MIPS_SYS(sys_fchmod , 2) + MIPS_SYS(sys_fchown , 3) /* 4095 */ + MIPS_SYS(sys_getpriority , 2) + MIPS_SYS(sys_setpriority , 3) + MIPS_SYS(sys_ni_syscall , 0) + MIPS_SYS(sys_statfs , 2) + MIPS_SYS(sys_fstatfs , 2) /* 4100 */ + MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */ + MIPS_SYS(sys_socketcall , 2) + MIPS_SYS(sys_syslog , 3) + MIPS_SYS(sys_setitimer , 3) + MIPS_SYS(sys_getitimer , 2) /* 4105 */ + MIPS_SYS(sys_newstat , 2) + MIPS_SYS(sys_newlstat , 2) + MIPS_SYS(sys_newfstat , 2) + MIPS_SYS(sys_uname , 1) + MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */ + MIPS_SYS(sys_vhangup , 0) + MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */ + MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */ + MIPS_SYS(sys_wait4 , 4) + MIPS_SYS(sys_swapoff , 1) /* 4115 */ + MIPS_SYS(sys_sysinfo , 1) + MIPS_SYS(sys_ipc , 6) + MIPS_SYS(sys_fsync , 1) + MIPS_SYS(sys_sigreturn , 0) + MIPS_SYS(sys_clone , 6) /* 4120 */ + MIPS_SYS(sys_setdomainname, 2) + MIPS_SYS(sys_newuname , 1) + MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */ + MIPS_SYS(sys_adjtimex , 1) + MIPS_SYS(sys_mprotect , 3) /* 4125 */ + MIPS_SYS(sys_sigprocmask , 3) + MIPS_SYS(sys_ni_syscall , 0) /* was create_module */ + MIPS_SYS(sys_init_module , 5) + MIPS_SYS(sys_delete_module, 1) + MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */ + MIPS_SYS(sys_quotactl , 0) + MIPS_SYS(sys_getpgid , 1) + MIPS_SYS(sys_fchdir , 1) + MIPS_SYS(sys_bdflush , 2) + MIPS_SYS(sys_sysfs , 3) /* 4135 */ + MIPS_SYS(sys_personality , 1) + MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */ + MIPS_SYS(sys_setfsuid , 1) + MIPS_SYS(sys_setfsgid , 1) + MIPS_SYS(sys_llseek , 5) /* 4140 */ + MIPS_SYS(sys_getdents , 3) + MIPS_SYS(sys_select , 5) + MIPS_SYS(sys_flock , 2) + MIPS_SYS(sys_msync , 3) + MIPS_SYS(sys_readv , 3) /* 4145 */ + MIPS_SYS(sys_writev , 3) + MIPS_SYS(sys_cacheflush , 3) + MIPS_SYS(sys_cachectl , 3) + MIPS_SYS(sys_sysmips , 4) + MIPS_SYS(sys_ni_syscall , 0) /* 4150 */ + MIPS_SYS(sys_getsid , 1) + MIPS_SYS(sys_fdatasync , 0) + MIPS_SYS(sys_sysctl , 1) + MIPS_SYS(sys_mlock , 2) + MIPS_SYS(sys_munlock , 2) /* 4155 */ + MIPS_SYS(sys_mlockall , 1) + MIPS_SYS(sys_munlockall , 0) + MIPS_SYS(sys_sched_setparam, 2) + MIPS_SYS(sys_sched_getparam, 2) + MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */ + MIPS_SYS(sys_sched_getscheduler, 1) + MIPS_SYS(sys_sched_yield , 0) + MIPS_SYS(sys_sched_get_priority_max, 1) + MIPS_SYS(sys_sched_get_priority_min, 1) + MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */ + MIPS_SYS(sys_nanosleep, 2) + MIPS_SYS(sys_mremap , 5) + MIPS_SYS(sys_accept , 3) + MIPS_SYS(sys_bind , 3) + MIPS_SYS(sys_connect , 3) /* 4170 */ + MIPS_SYS(sys_getpeername , 3) + MIPS_SYS(sys_getsockname , 3) + MIPS_SYS(sys_getsockopt , 5) + MIPS_SYS(sys_listen , 2) + MIPS_SYS(sys_recv , 4) /* 4175 */ + MIPS_SYS(sys_recvfrom , 6) + MIPS_SYS(sys_recvmsg , 3) + MIPS_SYS(sys_send , 4) + MIPS_SYS(sys_sendmsg , 3) + MIPS_SYS(sys_sendto , 6) /* 4180 */ + MIPS_SYS(sys_setsockopt , 5) + MIPS_SYS(sys_shutdown , 2) + MIPS_SYS(sys_socket , 3) + MIPS_SYS(sys_socketpair , 4) + MIPS_SYS(sys_setresuid , 3) /* 4185 */ + MIPS_SYS(sys_getresuid , 3) + MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */ + MIPS_SYS(sys_poll , 3) + MIPS_SYS(sys_nfsservctl , 3) + MIPS_SYS(sys_setresgid , 3) /* 4190 */ + MIPS_SYS(sys_getresgid , 3) + MIPS_SYS(sys_prctl , 5) + MIPS_SYS(sys_rt_sigreturn, 0) + MIPS_SYS(sys_rt_sigaction, 4) + MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */ + MIPS_SYS(sys_rt_sigpending, 2) + MIPS_SYS(sys_rt_sigtimedwait, 4) + MIPS_SYS(sys_rt_sigqueueinfo, 3) + MIPS_SYS(sys_rt_sigsuspend, 0) + MIPS_SYS(sys_pread64 , 6) /* 4200 */ + MIPS_SYS(sys_pwrite64 , 6) + MIPS_SYS(sys_chown , 3) + MIPS_SYS(sys_getcwd , 2) + MIPS_SYS(sys_capget , 2) + MIPS_SYS(sys_capset , 2) /* 4205 */ + MIPS_SYS(sys_sigaltstack , 2) + MIPS_SYS(sys_sendfile , 4) + MIPS_SYS(sys_ni_syscall , 0) + MIPS_SYS(sys_ni_syscall , 0) + MIPS_SYS(sys_mmap2 , 6) /* 4210 */ + MIPS_SYS(sys_truncate64 , 4) + MIPS_SYS(sys_ftruncate64 , 4) + MIPS_SYS(sys_stat64 , 2) + MIPS_SYS(sys_lstat64 , 2) + MIPS_SYS(sys_fstat64 , 2) /* 4215 */ + MIPS_SYS(sys_pivot_root , 2) + MIPS_SYS(sys_mincore , 3) + MIPS_SYS(sys_madvise , 3) + MIPS_SYS(sys_getdents64 , 3) + MIPS_SYS(sys_fcntl64 , 3) /* 4220 */ + MIPS_SYS(sys_ni_syscall , 0) + MIPS_SYS(sys_gettid , 0) + MIPS_SYS(sys_readahead , 5) + MIPS_SYS(sys_setxattr , 5) + MIPS_SYS(sys_lsetxattr , 5) /* 4225 */ + MIPS_SYS(sys_fsetxattr , 5) + MIPS_SYS(sys_getxattr , 4) + MIPS_SYS(sys_lgetxattr , 4) + MIPS_SYS(sys_fgetxattr , 4) + MIPS_SYS(sys_listxattr , 3) /* 4230 */ + MIPS_SYS(sys_llistxattr , 3) + MIPS_SYS(sys_flistxattr , 3) + MIPS_SYS(sys_removexattr , 2) + MIPS_SYS(sys_lremovexattr, 2) + MIPS_SYS(sys_fremovexattr, 2) /* 4235 */ + MIPS_SYS(sys_tkill , 2) + MIPS_SYS(sys_sendfile64 , 5) + MIPS_SYS(sys_futex , 6) + MIPS_SYS(sys_sched_setaffinity, 3) + MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */ + MIPS_SYS(sys_io_setup , 2) + MIPS_SYS(sys_io_destroy , 1) + MIPS_SYS(sys_io_getevents, 5) + MIPS_SYS(sys_io_submit , 3) + MIPS_SYS(sys_io_cancel , 3) /* 4245 */ + MIPS_SYS(sys_exit_group , 1) + MIPS_SYS(sys_lookup_dcookie, 3) + MIPS_SYS(sys_epoll_create, 1) + MIPS_SYS(sys_epoll_ctl , 4) + MIPS_SYS(sys_epoll_wait , 3) /* 4250 */ + MIPS_SYS(sys_remap_file_pages, 5) + MIPS_SYS(sys_set_tid_address, 1) + MIPS_SYS(sys_restart_syscall, 0) + MIPS_SYS(sys_fadvise64_64, 7) + MIPS_SYS(sys_statfs64 , 3) /* 4255 */ + MIPS_SYS(sys_fstatfs64 , 2) + MIPS_SYS(sys_timer_create, 3) + MIPS_SYS(sys_timer_settime, 4) + MIPS_SYS(sys_timer_gettime, 2) + MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */ + MIPS_SYS(sys_timer_delete, 1) + MIPS_SYS(sys_clock_settime, 2) + MIPS_SYS(sys_clock_gettime, 2) + MIPS_SYS(sys_clock_getres, 2) + MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */ + MIPS_SYS(sys_tgkill , 3) + MIPS_SYS(sys_utimes , 2) + MIPS_SYS(sys_mbind , 4) + MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */ + MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */ + MIPS_SYS(sys_mq_open , 4) + MIPS_SYS(sys_mq_unlink , 1) + MIPS_SYS(sys_mq_timedsend, 5) + MIPS_SYS(sys_mq_timedreceive, 5) + MIPS_SYS(sys_mq_notify , 2) /* 4275 */ + MIPS_SYS(sys_mq_getsetattr, 3) + MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */ + MIPS_SYS(sys_waitid , 4) + MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */ + MIPS_SYS(sys_add_key , 5) + MIPS_SYS(sys_request_key, 4) + MIPS_SYS(sys_keyctl , 5) + MIPS_SYS(sys_set_thread_area, 1) + MIPS_SYS(sys_inotify_init, 0) + MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */ + MIPS_SYS(sys_inotify_rm_watch, 2) + MIPS_SYS(sys_migrate_pages, 4) + MIPS_SYS(sys_openat, 4) + MIPS_SYS(sys_mkdirat, 3) + MIPS_SYS(sys_mknodat, 4) /* 4290 */ + MIPS_SYS(sys_fchownat, 5) + MIPS_SYS(sys_futimesat, 3) + MIPS_SYS(sys_fstatat64, 4) + MIPS_SYS(sys_unlinkat, 3) + MIPS_SYS(sys_renameat, 4) /* 4295 */ + MIPS_SYS(sys_linkat, 5) + MIPS_SYS(sys_symlinkat, 3) + MIPS_SYS(sys_readlinkat, 4) + MIPS_SYS(sys_fchmodat, 3) + MIPS_SYS(sys_faccessat, 3) /* 4300 */ + MIPS_SYS(sys_pselect6, 6) + MIPS_SYS(sys_ppoll, 5) + MIPS_SYS(sys_unshare, 1) + MIPS_SYS(sys_splice, 6) + MIPS_SYS(sys_sync_file_range, 7) /* 4305 */ + MIPS_SYS(sys_tee, 4) + MIPS_SYS(sys_vmsplice, 4) + MIPS_SYS(sys_move_pages, 6) + MIPS_SYS(sys_set_robust_list, 2) + MIPS_SYS(sys_get_robust_list, 3) /* 4310 */ + MIPS_SYS(sys_kexec_load, 4) + MIPS_SYS(sys_getcpu, 3) + MIPS_SYS(sys_epoll_pwait, 6) + MIPS_SYS(sys_ioprio_set, 3) + MIPS_SYS(sys_ioprio_get, 2) + MIPS_SYS(sys_utimensat, 4) + MIPS_SYS(sys_signalfd, 3) + MIPS_SYS(sys_ni_syscall, 0) /* was timerfd */ + MIPS_SYS(sys_eventfd, 1) + MIPS_SYS(sys_fallocate, 6) /* 4320 */ + MIPS_SYS(sys_timerfd_create, 2) + MIPS_SYS(sys_timerfd_gettime, 2) + MIPS_SYS(sys_timerfd_settime, 4) + MIPS_SYS(sys_signalfd4, 4) + MIPS_SYS(sys_eventfd2, 2) /* 4325 */ + MIPS_SYS(sys_epoll_create1, 1) + MIPS_SYS(sys_dup3, 3) + MIPS_SYS(sys_pipe2, 2) + MIPS_SYS(sys_inotify_init1, 1) + MIPS_SYS(sys_preadv, 5) /* 4330 */ + MIPS_SYS(sys_pwritev, 5) + MIPS_SYS(sys_rt_tgsigqueueinfo, 4) + MIPS_SYS(sys_perf_event_open, 5) + MIPS_SYS(sys_accept4, 4) + MIPS_SYS(sys_recvmmsg, 5) /* 4335 */ + MIPS_SYS(sys_fanotify_init, 2) + MIPS_SYS(sys_fanotify_mark, 6) + MIPS_SYS(sys_prlimit64, 4) + MIPS_SYS(sys_name_to_handle_at, 5) + MIPS_SYS(sys_open_by_handle_at, 3) /* 4340 */ + MIPS_SYS(sys_clock_adjtime, 2) + MIPS_SYS(sys_syncfs, 1) + MIPS_SYS(sys_sendmmsg, 4) + MIPS_SYS(sys_setns, 2) + MIPS_SYS(sys_process_vm_readv, 6) /* 345 */ + MIPS_SYS(sys_process_vm_writev, 6) + MIPS_SYS(sys_kcmp, 5) + MIPS_SYS(sys_finit_module, 3) + MIPS_SYS(sys_sched_setattr, 2) + MIPS_SYS(sys_sched_getattr, 3) /* 350 */ + MIPS_SYS(sys_renameat2, 5) + MIPS_SYS(sys_seccomp, 3) + MIPS_SYS(sys_getrandom, 3) + MIPS_SYS(sys_memfd_create, 2) + MIPS_SYS(sys_bpf, 3) /* 355 */ + MIPS_SYS(sys_execveat, 5) + MIPS_SYS(sys_userfaultfd, 1) + MIPS_SYS(sys_membarrier, 2) + MIPS_SYS(sys_mlock2, 3) + MIPS_SYS(sys_copy_file_range, 6) /* 360 */ + MIPS_SYS(sys_preadv2, 6) + MIPS_SYS(sys_pwritev2, 6) +}; +# undef MIPS_SYS +# endif /* O32 */ + +static int do_store_exclusive(CPUMIPSState *env) +{ + target_ulong addr; + target_ulong page_addr; + target_ulong val; + int flags; + int segv = 0; + int reg; + int d; + + addr = env->lladdr; + page_addr = addr & TARGET_PAGE_MASK; + start_exclusive(); + mmap_lock(); + flags = page_get_flags(page_addr); + if ((flags & PAGE_READ) == 0) { + segv = 1; + } else { + reg = env->llreg & 0x1f; + d = (env->llreg & 0x20) != 0; + if (d) { + segv = get_user_s64(val, addr); + } else { + segv = get_user_s32(val, addr); + } + if (!segv) { + if (val != env->llval) { + env->active_tc.gpr[reg] = 0; + } else { + if (d) { + segv = put_user_u64(env->llnewval, addr); + } else { + segv = put_user_u32(env->llnewval, addr); + } + if (!segv) { + env->active_tc.gpr[reg] = 1; + } + } + } + } + env->lladdr = -1; + if (!segv) { + env->active_tc.PC += 4; + } + mmap_unlock(); + end_exclusive(); + return segv; +} + +/* Break codes */ +enum { + BRK_OVERFLOW = 6, + BRK_DIVZERO = 7 +}; + +static int do_break(CPUMIPSState *env, target_siginfo_t *info, + unsigned int code) +{ + int ret = -1; + + switch (code) { + case BRK_OVERFLOW: + case BRK_DIVZERO: + info->si_signo = TARGET_SIGFPE; + info->si_errno = 0; + info->si_code = (code == BRK_OVERFLOW) ? FPE_INTOVF : FPE_INTDIV; + queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info); + ret = 0; + break; + default: + info->si_signo = TARGET_SIGTRAP; + info->si_errno = 0; + queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info); + ret = 0; + break; + } + + return ret; +} + +void cpu_loop(CPUMIPSState *env) +{ + CPUState *cs = CPU(mips_env_get_cpu(env)); + target_siginfo_t info; + int trapnr; + abi_long ret; +# ifdef TARGET_ABI_MIPSO32 + unsigned int syscall_num; +# endif + + for(;;) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch(trapnr) { + case EXCP_SYSCALL: + env->active_tc.PC += 4; +# ifdef TARGET_ABI_MIPSO32 + syscall_num = env->active_tc.gpr[2] - 4000; + if (syscall_num >= sizeof(mips_syscall_args)) { + ret = -TARGET_ENOSYS; + } else { + int nb_args; + abi_ulong sp_reg; + abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0; + + nb_args = mips_syscall_args[syscall_num]; + sp_reg = env->active_tc.gpr[29]; + switch (nb_args) { + /* these arguments are taken from the stack */ + case 8: + if ((ret = get_user_ual(arg8, sp_reg + 28)) != 0) { + goto done_syscall; + } + case 7: + if ((ret = get_user_ual(arg7, sp_reg + 24)) != 0) { + goto done_syscall; + } + case 6: + if ((ret = get_user_ual(arg6, sp_reg + 20)) != 0) { + goto done_syscall; + } + case 5: + if ((ret = get_user_ual(arg5, sp_reg + 16)) != 0) { + goto done_syscall; + } + default: + break; + } + ret = do_syscall(env, env->active_tc.gpr[2], + env->active_tc.gpr[4], + env->active_tc.gpr[5], + env->active_tc.gpr[6], + env->active_tc.gpr[7], + arg5, arg6, arg7, arg8); + } +done_syscall: +# else + ret = do_syscall(env, env->active_tc.gpr[2], + env->active_tc.gpr[4], env->active_tc.gpr[5], + env->active_tc.gpr[6], env->active_tc.gpr[7], + env->active_tc.gpr[8], env->active_tc.gpr[9], + env->active_tc.gpr[10], env->active_tc.gpr[11]); +# endif /* O32 */ + if (ret == -TARGET_ERESTARTSYS) { + env->active_tc.PC -= 4; + break; + } + if (ret == -TARGET_QEMU_ESIGRETURN) { + /* Returning from a successful sigreturn syscall. + Avoid clobbering register state. */ + break; + } + if ((abi_ulong)ret >= (abi_ulong)-1133) { + env->active_tc.gpr[7] = 1; /* error flag */ + ret = -ret; + } else { + env->active_tc.gpr[7] = 0; /* error flag */ + } + env->active_tc.gpr[2] = ret; + break; + case EXCP_TLBL: + case EXCP_TLBS: + case EXCP_AdEL: + case EXCP_AdES: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->CP0_BadVAddr; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_CpU: + case EXCP_RI: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = 0; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_DEBUG: + { + int sig; + + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) + { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + } + break; + case EXCP_SC: + if (do_store_exclusive(env)) { + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->active_tc.PC; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP_DSPDIS: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPC; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + /* The code below was inspired by the MIPS Linux kernel trap + * handling code in arch/mips/kernel/traps.c. + */ + case EXCP_BREAK: + { + abi_ulong trap_instr; + unsigned int code; + + if (env->hflags & MIPS_HFLAG_M16) { + if (env->insn_flags & ASE_MICROMIPS) { + /* microMIPS mode */ + ret = get_user_u16(trap_instr, env->active_tc.PC); + if (ret != 0) { + goto error; + } + + if ((trap_instr >> 10) == 0x11) { + /* 16-bit instruction */ + code = trap_instr & 0xf; + } else { + /* 32-bit instruction */ + abi_ulong instr_lo; + + ret = get_user_u16(instr_lo, + env->active_tc.PC + 2); + if (ret != 0) { + goto error; + } + trap_instr = (trap_instr << 16) | instr_lo; + code = ((trap_instr >> 6) & ((1 << 20) - 1)); + /* Unfortunately, microMIPS also suffers from + the old assembler bug... */ + if (code >= (1 << 10)) { + code >>= 10; + } + } + } else { + /* MIPS16e mode */ + ret = get_user_u16(trap_instr, env->active_tc.PC); + if (ret != 0) { + goto error; + } + code = (trap_instr >> 6) & 0x3f; + } + } else { + ret = get_user_u32(trap_instr, env->active_tc.PC); + if (ret != 0) { + goto error; + } + + /* As described in the original Linux kernel code, the + * below checks on 'code' are to work around an old + * assembly bug. + */ + code = ((trap_instr >> 6) & ((1 << 20) - 1)); + if (code >= (1 << 10)) { + code >>= 10; + } + } + + if (do_break(env, &info, code) != 0) { + goto error; + } + } + break; + case EXCP_TRAP: + { + abi_ulong trap_instr; + unsigned int code = 0; + + if (env->hflags & MIPS_HFLAG_M16) { + /* microMIPS mode */ + abi_ulong instr[2]; + + ret = get_user_u16(instr[0], env->active_tc.PC) || + get_user_u16(instr[1], env->active_tc.PC + 2); + + trap_instr = (instr[0] << 16) | instr[1]; + } else { + ret = get_user_u32(trap_instr, env->active_tc.PC); + } + + if (ret != 0) { + goto error; + } + + /* The immediate versions don't provide a code. */ + if (!(trap_instr & 0xFC000000)) { + if (env->hflags & MIPS_HFLAG_M16) { + /* microMIPS mode */ + code = ((trap_instr >> 12) & ((1 << 4) - 1)); + } else { + code = ((trap_instr >> 6) & ((1 << 10) - 1)); + } + } + + if (do_break(env, &info, code) != 0) { + goto error; + } + } + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: +error: + EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); + abort(); + } + process_pending_signals(env); + } +} diff --git a/linux-user/mips64/cpu_loop.inc.c b/linux-user/mips64/cpu_loop.inc.c new file mode 100644 index 0000000000..0eb0f9572a --- /dev/null +++ b/linux-user/mips64/cpu_loop.inc.c @@ -0,0 +1 @@ +#include "../mips/cpu_loop.inc.c" diff --git a/linux-user/nios2/cpu_loop.inc.c b/linux-user/nios2/cpu_loop.inc.c new file mode 100644 index 0000000000..d6f318d640 --- /dev/null +++ b/linux-user/nios2/cpu_loop.inc.c @@ -0,0 +1,98 @@ +void cpu_loop(CPUNios2State *env) +{ + CPUState *cs = ENV_GET_CPU(env); + Nios2CPU *cpu = NIOS2_CPU(cs); + target_siginfo_t info; + int trapnr, gdbsig, ret; + + for (;;) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + gdbsig = 0; + + switch (trapnr) { + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_TRAP: + if (env->regs[R_AT] == 0) { + abi_long ret; + qemu_log_mask(CPU_LOG_INT, "\nSyscall\n"); + + ret = do_syscall(env, env->regs[2], + env->regs[4], env->regs[5], env->regs[6], + env->regs[7], env->regs[8], env->regs[9], + 0, 0); + + if (env->regs[2] == 0) { /* FIXME: syscall 0 workaround */ + ret = 0; + } + + env->regs[2] = abs(ret); + /* Return value is 0..4096 */ + env->regs[7] = (ret > 0xfffffffffffff000ULL); + env->regs[CR_ESTATUS] = env->regs[CR_STATUS]; + env->regs[CR_STATUS] &= ~0x3; + env->regs[R_EA] = env->regs[R_PC] + 4; + env->regs[R_PC] += 4; + break; + } else { + qemu_log_mask(CPU_LOG_INT, "\nTrap\n"); + + env->regs[CR_ESTATUS] = env->regs[CR_STATUS]; + env->regs[CR_STATUS] &= ~0x3; + env->regs[R_EA] = env->regs[R_PC] + 4; + env->regs[R_PC] = cpu->exception_addr; + + gdbsig = TARGET_SIGTRAP; + break; + } + case 0xaa: + switch (env->regs[R_PC]) { + /*case 0x1000:*/ /* TODO:__kuser_helper_version */ + case 0x1004: /* __kuser_cmpxchg */ + start_exclusive(); + if (env->regs[4] & 0x3) { + goto kuser_fail; + } + ret = get_user_u32(env->regs[2], env->regs[4]); + if (ret) { + end_exclusive(); + goto kuser_fail; + } + env->regs[2] -= env->regs[5]; + if (env->regs[2] == 0) { + put_user_u32(env->regs[6], env->regs[4]); + } + end_exclusive(); + env->regs[R_PC] = env->regs[R_RA]; + break; + /*case 0x1040:*/ /* TODO:__kuser_sigtramp */ + default: + ; +kuser_fail: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + /* TODO: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->regs[R_PC]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + default: + EXCP_DUMP(env, "\nqemu: unhandled CPU exception %#x - aborting\n", + trapnr); + gdbsig = TARGET_SIGILL; + break; + } + if (gdbsig) { + gdb_handlesig(cs, gdbsig); + if (gdbsig != TARGET_SIGTRAP) { + exit(EXIT_FAILURE); + } + } + + process_pending_signals(env); + } +} diff --git a/linux-user/openrisc/cpu_loop.inc.c b/linux-user/openrisc/cpu_loop.inc.c new file mode 100644 index 0000000000..4cf9752142 --- /dev/null +++ b/linux-user/openrisc/cpu_loop.inc.c @@ -0,0 +1,81 @@ +void cpu_loop(CPUOpenRISCState *env) +{ + CPUState *cs = CPU(openrisc_env_get_cpu(env)); + int trapnr; + abi_long ret; + target_siginfo_t info; + + for (;;) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch (trapnr) { + case EXCP_SYSCALL: + env->pc += 4; /* 0xc00; */ + ret = do_syscall(env, + cpu_get_gpr(env, 11), /* return value */ + cpu_get_gpr(env, 3), /* r3 - r7 are params */ + cpu_get_gpr(env, 4), + cpu_get_gpr(env, 5), + cpu_get_gpr(env, 6), + cpu_get_gpr(env, 7), + cpu_get_gpr(env, 8), 0, 0); + if (ret == -TARGET_ERESTARTSYS) { + env->pc -= 4; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + cpu_set_gpr(env, 11, ret); + } + break; + case EXCP_DPF: + case EXCP_IPF: + case EXCP_RANGE: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_ALIGN: + info.si_signo = TARGET_SIGBUS; + info.si_errno = 0; + info.si_code = TARGET_BUS_ADRALN; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_ILLEGAL: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPC; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_FPE: + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + info.si_code = 0; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_INTERRUPT: + /* We processed the pending cpu work above. */ + break; + case EXCP_DEBUG: + trapnr = gdb_handlesig(cs, TARGET_SIGTRAP); + if (trapnr) { + info.si_signo = trapnr; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: + g_assert_not_reached(); + } + process_pending_signals(env); + } +} diff --git a/linux-user/ppc/cpu_loop.inc.c b/linux-user/ppc/cpu_loop.inc.c new file mode 100644 index 0000000000..008c1d603e --- /dev/null +++ b/linux-user/ppc/cpu_loop.inc.c @@ -0,0 +1,538 @@ +static inline uint64_t cpu_ppc_get_tb(CPUPPCState *env) +{ + return cpu_get_host_ticks(); +} + +uint64_t cpu_ppc_load_tbl(CPUPPCState *env) +{ + return cpu_ppc_get_tb(env); +} + +uint32_t cpu_ppc_load_tbu(CPUPPCState *env) +{ + return cpu_ppc_get_tb(env) >> 32; +} + +uint64_t cpu_ppc_load_atbl(CPUPPCState *env) +{ + return cpu_ppc_get_tb(env); +} + +uint32_t cpu_ppc_load_atbu(CPUPPCState *env) +{ + return cpu_ppc_get_tb(env) >> 32; +} + +uint32_t cpu_ppc601_load_rtcu(CPUPPCState *env) +__attribute__ (( alias ("cpu_ppc_load_tbu") )); + +uint32_t cpu_ppc601_load_rtcl(CPUPPCState *env) +{ + return cpu_ppc_load_tbl(env) & 0x3FFFFF80; +} + +/* XXX: to be fixed */ +int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp) +{ + return -1; +} + +int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val) +{ + return -1; +} + +static int do_store_exclusive(CPUPPCState *env) +{ + target_ulong addr; + target_ulong page_addr; + target_ulong val, val2 __attribute__((unused)) = 0; + int flags; + int segv = 0; + + addr = env->reserve_ea; + page_addr = addr & TARGET_PAGE_MASK; + start_exclusive(); + mmap_lock(); + flags = page_get_flags(page_addr); + if ((flags & PAGE_READ) == 0) { + segv = 1; + } else { + int reg = env->reserve_info & 0x1f; + int size = env->reserve_info >> 5; + int stored = 0; + + if (addr == env->reserve_addr) { + switch (size) { + case 1: segv = get_user_u8(val, addr); break; + case 2: segv = get_user_u16(val, addr); break; + case 4: segv = get_user_u32(val, addr); break; +#if defined(TARGET_PPC64) + case 8: segv = get_user_u64(val, addr); break; + case 16: { + segv = get_user_u64(val, addr); + if (!segv) { + segv = get_user_u64(val2, addr + 8); + } + break; + } +#endif + default: abort(); + } + if (!segv && val == env->reserve_val) { + val = env->gpr[reg]; + switch (size) { + case 1: segv = put_user_u8(val, addr); break; + case 2: segv = put_user_u16(val, addr); break; + case 4: segv = put_user_u32(val, addr); break; +#if defined(TARGET_PPC64) + case 8: segv = put_user_u64(val, addr); break; + case 16: { + if (val2 == env->reserve_val2) { + if (msr_le) { + val2 = val; + val = env->gpr[reg+1]; + } else { + val2 = env->gpr[reg+1]; + } + segv = put_user_u64(val, addr); + if (!segv) { + segv = put_user_u64(val2, addr + 8); + } + } + break; + } +#endif + default: abort(); + } + if (!segv) { + stored = 1; + } + } + } + env->crf[0] = (stored << 1) | xer_so; + env->reserve_addr = (target_ulong)-1; + } + if (!segv) { + env->nip += 4; + } + mmap_unlock(); + end_exclusive(); + return segv; +} + +void cpu_loop(CPUPPCState *env) +{ + CPUState *cs = CPU(ppc_env_get_cpu(env)); + target_siginfo_t info; + int trapnr; + target_ulong ret; + + for(;;) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch(trapnr) { + case POWERPC_EXCP_NONE: + /* Just go on */ + break; + case POWERPC_EXCP_CRITICAL: /* Critical input */ + cpu_abort(cs, "Critical interrupt while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_MCHECK: /* Machine check exception */ + cpu_abort(cs, "Machine check exception while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_DSI: /* Data storage exception */ + /* XXX: check this. Seems bugged */ + switch (env->error_code & 0xFF000000) { + case 0x40000000: + case 0x42000000: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_MAPERR; + break; + case 0x04000000: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLADR; + break; + case 0x08000000: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_ACCERR; + break; + default: + /* Let's send a regular segfault... */ + EXCP_DUMP(env, "Invalid segfault errno (%02x)\n", + env->error_code); + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_MAPERR; + break; + } + info._sifields._sigfault._addr = env->spr[SPR_DAR]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case POWERPC_EXCP_ISI: /* Instruction storage exception */ + /* XXX: check this */ + switch (env->error_code & 0xFF000000) { + case 0x40000000: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_MAPERR; + break; + case 0x10000000: + case 0x08000000: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_ACCERR; + break; + default: + /* Let's send a regular segfault... */ + EXCP_DUMP(env, "Invalid segfault errno (%02x)\n", + env->error_code); + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_MAPERR; + break; + } + info._sifields._sigfault._addr = env->nip - 4; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case POWERPC_EXCP_EXTERNAL: /* External input */ + cpu_abort(cs, "External interrupt while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_ALIGN: /* Alignment exception */ + /* XXX: check this */ + info.si_signo = TARGET_SIGBUS; + info.si_errno = 0; + info.si_code = TARGET_BUS_ADRALN; + info._sifields._sigfault._addr = env->nip; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case POWERPC_EXCP_PROGRAM: /* Program exception */ + case POWERPC_EXCP_HV_EMU: /* HV emulation */ + /* XXX: check this */ + switch (env->error_code & ~0xF) { + case POWERPC_EXCP_FP: + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + switch (env->error_code & 0xF) { + case POWERPC_EXCP_FP_OX: + info.si_code = TARGET_FPE_FLTOVF; + break; + case POWERPC_EXCP_FP_UX: + info.si_code = TARGET_FPE_FLTUND; + break; + case POWERPC_EXCP_FP_ZX: + case POWERPC_EXCP_FP_VXZDZ: + info.si_code = TARGET_FPE_FLTDIV; + break; + case POWERPC_EXCP_FP_XX: + info.si_code = TARGET_FPE_FLTRES; + break; + case POWERPC_EXCP_FP_VXSOFT: + info.si_code = TARGET_FPE_FLTINV; + break; + case POWERPC_EXCP_FP_VXSNAN: + case POWERPC_EXCP_FP_VXISI: + case POWERPC_EXCP_FP_VXIDI: + case POWERPC_EXCP_FP_VXIMZ: + case POWERPC_EXCP_FP_VXVC: + case POWERPC_EXCP_FP_VXSQRT: + case POWERPC_EXCP_FP_VXCVI: + info.si_code = TARGET_FPE_FLTSUB; + break; + default: + EXCP_DUMP(env, "Unknown floating point exception (%02x)\n", + env->error_code); + break; + } + break; + case POWERPC_EXCP_INVAL: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + switch (env->error_code & 0xF) { + case POWERPC_EXCP_INVAL_INVAL: + info.si_code = TARGET_ILL_ILLOPC; + break; + case POWERPC_EXCP_INVAL_LSWX: + info.si_code = TARGET_ILL_ILLOPN; + break; + case POWERPC_EXCP_INVAL_SPR: + info.si_code = TARGET_ILL_PRVREG; + break; + case POWERPC_EXCP_INVAL_FP: + info.si_code = TARGET_ILL_COPROC; + break; + default: + EXCP_DUMP(env, "Unknown invalid operation (%02x)\n", + env->error_code & 0xF); + info.si_code = TARGET_ILL_ILLADR; + break; + } + break; + case POWERPC_EXCP_PRIV: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + switch (env->error_code & 0xF) { + case POWERPC_EXCP_PRIV_OPC: + info.si_code = TARGET_ILL_PRVOPC; + break; + case POWERPC_EXCP_PRIV_REG: + info.si_code = TARGET_ILL_PRVREG; + break; + default: + EXCP_DUMP(env, "Unknown privilege violation (%02x)\n", + env->error_code & 0xF); + info.si_code = TARGET_ILL_PRVOPC; + break; + } + break; + case POWERPC_EXCP_TRAP: + cpu_abort(cs, "Tried to call a TRAP\n"); + break; + default: + /* Should not happen ! */ + cpu_abort(cs, "Unknown program exception (%02x)\n", + env->error_code); + break; + } + info._sifields._sigfault._addr = env->nip; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */ + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_COPROC; + info._sifields._sigfault._addr = env->nip; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case POWERPC_EXCP_SYSCALL: /* System call exception */ + cpu_abort(cs, "Syscall exception while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */ + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_COPROC; + info._sifields._sigfault._addr = env->nip; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case POWERPC_EXCP_DECR: /* Decrementer exception */ + cpu_abort(cs, "Decrementer interrupt while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */ + cpu_abort(cs, "Fix interval timer interrupt while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */ + cpu_abort(cs, "Watchdog timer interrupt while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_DTLB: /* Data TLB error */ + cpu_abort(cs, "Data TLB exception while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_ITLB: /* Instruction TLB error */ + cpu_abort(cs, "Instruction TLB exception while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */ + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_COPROC; + info._sifields._sigfault._addr = env->nip; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */ + cpu_abort(cs, "Embedded floating-point data IRQ not handled\n"); + break; + case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */ + cpu_abort(cs, "Embedded floating-point round IRQ not handled\n"); + break; + case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */ + cpu_abort(cs, "Performance monitor exception not handled\n"); + break; + case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */ + cpu_abort(cs, "Doorbell interrupt while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */ + cpu_abort(cs, "Doorbell critical interrupt while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_RESET: /* System reset exception */ + cpu_abort(cs, "Reset interrupt while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_DSEG: /* Data segment exception */ + cpu_abort(cs, "Data segment exception while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_ISEG: /* Instruction segment exception */ + cpu_abort(cs, "Instruction segment exception " + "while in user mode. Aborting\n"); + break; + /* PowerPC 64 with hypervisor mode support */ + case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */ + cpu_abort(cs, "Hypervisor decrementer interrupt " + "while in user mode. Aborting\n"); + break; + case POWERPC_EXCP_TRACE: /* Trace exception */ + /* Nothing to do: + * we use this exception to emulate step-by-step execution mode. + */ + break; + /* PowerPC 64 with hypervisor mode support */ + case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */ + cpu_abort(cs, "Hypervisor data storage exception " + "while in user mode. Aborting\n"); + break; + case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */ + cpu_abort(cs, "Hypervisor instruction storage exception " + "while in user mode. Aborting\n"); + break; + case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */ + cpu_abort(cs, "Hypervisor data segment exception " + "while in user mode. Aborting\n"); + break; + case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */ + cpu_abort(cs, "Hypervisor instruction segment exception " + "while in user mode. Aborting\n"); + break; + case POWERPC_EXCP_VPU: /* Vector unavailable exception */ + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_COPROC; + info._sifields._sigfault._addr = env->nip; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */ + cpu_abort(cs, "Programmable interval timer interrupt " + "while in user mode. Aborting\n"); + break; + case POWERPC_EXCP_IO: /* IO error exception */ + cpu_abort(cs, "IO error exception while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_RUNM: /* Run mode exception */ + cpu_abort(cs, "Run mode exception while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_EMUL: /* Emulation trap exception */ + cpu_abort(cs, "Emulation trap exception not handled\n"); + break; + case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */ + cpu_abort(cs, "Instruction fetch TLB exception " + "while in user-mode. Aborting"); + break; + case POWERPC_EXCP_DLTLB: /* Data load TLB miss */ + cpu_abort(cs, "Data load TLB exception while in user-mode. " + "Aborting"); + break; + case POWERPC_EXCP_DSTLB: /* Data store TLB miss */ + cpu_abort(cs, "Data store TLB exception while in user-mode. " + "Aborting"); + break; + case POWERPC_EXCP_FPA: /* Floating-point assist exception */ + cpu_abort(cs, "Floating-point assist exception not handled\n"); + break; + case POWERPC_EXCP_IABR: /* Instruction address breakpoint */ + cpu_abort(cs, "Instruction address breakpoint exception " + "not handled\n"); + break; + case POWERPC_EXCP_SMI: /* System management interrupt */ + cpu_abort(cs, "System management interrupt while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_THERM: /* Thermal interrupt */ + cpu_abort(cs, "Thermal interrupt interrupt while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */ + cpu_abort(cs, "Performance monitor exception not handled\n"); + break; + case POWERPC_EXCP_VPUA: /* Vector assist exception */ + cpu_abort(cs, "Vector assist exception not handled\n"); + break; + case POWERPC_EXCP_SOFTP: /* Soft patch exception */ + cpu_abort(cs, "Soft patch exception not handled\n"); + break; + case POWERPC_EXCP_MAINT: /* Maintenance exception */ + cpu_abort(cs, "Maintenance exception while in user mode. " + "Aborting\n"); + break; + case POWERPC_EXCP_STOP: /* stop translation */ + /* We did invalidate the instruction cache. Go on */ + break; + case POWERPC_EXCP_BRANCH: /* branch instruction: */ + /* We just stopped because of a branch. Go on */ + break; + case POWERPC_EXCP_SYSCALL_USER: + /* system call in user-mode emulation */ + /* WARNING: + * PPC ABI uses overflow flag in cr0 to signal an error + * in syscalls. + */ + env->crf[0] &= ~0x1; + env->nip += 4; + ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], + env->gpr[5], env->gpr[6], env->gpr[7], + env->gpr[8], 0, 0); + if (ret == -TARGET_ERESTARTSYS) { + env->nip -= 4; + break; + } + if (ret == (target_ulong)(-TARGET_QEMU_ESIGRETURN)) { + /* Returning from a successful sigreturn syscall. + Avoid corrupting register state. */ + break; + } + if (ret > (target_ulong)(-515)) { + env->crf[0] |= 0x1; + ret = -ret; + } + env->gpr[3] = ret; + break; + case POWERPC_EXCP_STCX: + if (do_store_exclusive(env)) { + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->nip; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP_DEBUG: + { + int sig; + + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + } + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: + cpu_abort(cs, "Unknown exception 0x%x. Aborting\n", trapnr); + break; + } + process_pending_signals(env); + } +} diff --git a/linux-user/riscv/cpu_loop.inc.c b/linux-user/riscv/cpu_loop.inc.c new file mode 100644 index 0000000000..ebb02648f8 --- /dev/null +++ b/linux-user/riscv/cpu_loop.inc.c @@ -0,0 +1,89 @@ +void cpu_loop(CPURISCVState *env) +{ + CPUState *cs = CPU(riscv_env_get_cpu(env)); + int trapnr, signum, sigcode; + target_ulong sigaddr; + target_ulong ret; + + for (;;) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + signum = 0; + sigcode = 0; + sigaddr = 0; + + switch (trapnr) { + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + case RISCV_EXCP_U_ECALL: + env->pc += 4; + if (env->gpr[xA7] == TARGET_NR_arch_specific_syscall + 15) { + /* riscv_flush_icache_syscall is a no-op in QEMU as + self-modifying code is automatically detected */ + ret = 0; + } else { + ret = do_syscall(env, + env->gpr[xA7], + env->gpr[xA0], + env->gpr[xA1], + env->gpr[xA2], + env->gpr[xA3], + env->gpr[xA4], + env->gpr[xA5], + 0, 0); + } + if (ret == -TARGET_ERESTARTSYS) { + env->pc -= 4; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + env->gpr[xA0] = ret; + } + if (cs->singlestep_enabled) { + goto gdbstep; + } + break; + case RISCV_EXCP_ILLEGAL_INST: + signum = TARGET_SIGILL; + sigcode = TARGET_ILL_ILLOPC; + break; + case RISCV_EXCP_BREAKPOINT: + signum = TARGET_SIGTRAP; + sigcode = TARGET_TRAP_BRKPT; + sigaddr = env->pc; + break; + case RISCV_EXCP_INST_PAGE_FAULT: + case RISCV_EXCP_LOAD_PAGE_FAULT: + case RISCV_EXCP_STORE_PAGE_FAULT: + signum = TARGET_SIGSEGV; + sigcode = TARGET_SEGV_MAPERR; + break; + case EXCP_DEBUG: + gdbstep: + signum = gdb_handlesig(cs, TARGET_SIGTRAP); + sigcode = TARGET_TRAP_BRKPT; + break; + default: + EXCP_DUMP(env, "\nqemu: unhandled CPU exception %#x - aborting\n", + trapnr); + exit(EXIT_FAILURE); + } + + if (signum) { + target_siginfo_t info = { + .si_signo = signum, + .si_errno = 0, + .si_code = sigcode, + ._sifields._sigfault._addr = sigaddr + }; + queue_signal(env, info.si_signo, QEMU_SI_KILL, &info); + } + + process_pending_signals(env); + } +} diff --git a/linux-user/s390x/cpu_loop.inc.c b/linux-user/s390x/cpu_loop.inc.c new file mode 100644 index 0000000000..ea7e6d206a --- /dev/null +++ b/linux-user/s390x/cpu_loop.inc.c @@ -0,0 +1,132 @@ +/* s390x masks the fault address it reports in si_addr for SIGSEGV and SIGBUS */ +#define S390X_FAIL_ADDR_MASK -4096LL + +void cpu_loop(CPUS390XState *env) +{ + CPUState *cs = CPU(s390_env_get_cpu(env)); + int trapnr, n, sig; + target_siginfo_t info; + target_ulong addr; + abi_long ret; + + while (1) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch (trapnr) { + case EXCP_INTERRUPT: + /* Just indicate that signals should be handled asap. */ + break; + + case EXCP_SVC: + n = env->int_svc_code; + if (!n) { + /* syscalls > 255 */ + n = env->regs[1]; + } + env->psw.addr += env->int_svc_ilen; + ret = do_syscall(env, n, env->regs[2], env->regs[3], + env->regs[4], env->regs[5], + env->regs[6], env->regs[7], 0, 0); + if (ret == -TARGET_ERESTARTSYS) { + env->psw.addr -= env->int_svc_ilen; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + env->regs[2] = ret; + } + break; + + case EXCP_DEBUG: + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) { + n = TARGET_TRAP_BRKPT; + goto do_signal_pc; + } + break; + case EXCP_PGM: + n = env->int_pgm_code; + switch (n) { + case PGM_OPERATION: + case PGM_PRIVILEGED: + sig = TARGET_SIGILL; + n = TARGET_ILL_ILLOPC; + goto do_signal_pc; + case PGM_PROTECTION: + case PGM_ADDRESSING: + sig = TARGET_SIGSEGV; + /* XXX: check env->error_code */ + n = TARGET_SEGV_MAPERR; + addr = env->__excp_addr & S390X_FAIL_ADDR_MASK; + goto do_signal; + case PGM_EXECUTE: + case PGM_SPECIFICATION: + case PGM_SPECIAL_OP: + case PGM_OPERAND: + do_sigill_opn: + sig = TARGET_SIGILL; + n = TARGET_ILL_ILLOPN; + goto do_signal_pc; + + case PGM_FIXPT_OVERFLOW: + sig = TARGET_SIGFPE; + n = TARGET_FPE_INTOVF; + goto do_signal_pc; + case PGM_FIXPT_DIVIDE: + sig = TARGET_SIGFPE; + n = TARGET_FPE_INTDIV; + goto do_signal_pc; + + case PGM_DATA: + n = (env->fpc >> 8) & 0xff; + if (n == 0xff) { + /* compare-and-trap */ + goto do_sigill_opn; + } else { + /* An IEEE exception, simulated or otherwise. */ + if (n & 0x80) { + n = TARGET_FPE_FLTINV; + } else if (n & 0x40) { + n = TARGET_FPE_FLTDIV; + } else if (n & 0x20) { + n = TARGET_FPE_FLTOVF; + } else if (n & 0x10) { + n = TARGET_FPE_FLTUND; + } else if (n & 0x08) { + n = TARGET_FPE_FLTRES; + } else { + /* ??? Quantum exception; BFP, DFP error. */ + goto do_sigill_opn; + } + sig = TARGET_SIGFPE; + goto do_signal_pc; + } + + default: + fprintf(stderr, "Unhandled program exception: %#x\n", n); + cpu_dump_state(cs, stderr, fprintf, 0); + exit(EXIT_FAILURE); + } + break; + + do_signal_pc: + addr = env->psw.addr; + do_signal: + info.si_signo = sig; + info.si_errno = 0; + info.si_code = n; + info._sifields._sigfault._addr = addr; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: + fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr); + cpu_dump_state(cs, stderr, fprintf, 0); + exit(EXIT_FAILURE); + } + process_pending_signals (env); + } +} diff --git a/linux-user/sh4/cpu_loop.inc.c b/linux-user/sh4/cpu_loop.inc.c new file mode 100644 index 0000000000..768f3e8156 --- /dev/null +++ b/linux-user/sh4/cpu_loop.inc.c @@ -0,0 +1,78 @@ +void cpu_loop(CPUSH4State *env) +{ + CPUState *cs = CPU(sh_env_get_cpu(env)); + int trapnr, ret; + target_siginfo_t info; + + while (1) { + bool arch_interrupt = true; + + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch (trapnr) { + case 0x160: + env->pc += 2; + ret = do_syscall(env, + env->gregs[3], + env->gregs[4], + env->gregs[5], + env->gregs[6], + env->gregs[7], + env->gregs[0], + env->gregs[1], + 0, 0); + if (ret == -TARGET_ERESTARTSYS) { + env->pc -= 2; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + env->gregs[0] = ret; + } + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_DEBUG: + { + int sig; + + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } else { + arch_interrupt = false; + } + } + break; + case 0xa0: + case 0xc0: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->tea; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + arch_interrupt = false; + break; + default: + printf ("Unhandled trap: 0x%x\n", trapnr); + cpu_dump_state(cs, stderr, fprintf, 0); + exit(EXIT_FAILURE); + } + process_pending_signals (env); + + /* Most of the traps imply an exception or interrupt, which + implies an REI instruction has been executed. Which means + that LDST (aka LOK_ADDR) should be cleared. But there are + a few exceptions for traps internal to QEMU. */ + if (arch_interrupt) { + env->lock_addr = -1; + } + } +} diff --git a/linux-user/sparc/cpu_loop.inc.c b/linux-user/sparc/cpu_loop.inc.c new file mode 100644 index 0000000000..589c7a3caa --- /dev/null +++ b/linux-user/sparc/cpu_loop.inc.c @@ -0,0 +1,271 @@ +#define SPARC64_STACK_BIAS 2047 + +//#define DEBUG_WIN + +/* WARNING: dealing with register windows _is_ complicated. More info + can be found at http://www.sics.se/~psm/sparcstack.html */ +static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) +{ + index = (index + cwp * 16) % (16 * env->nwindows); + /* wrap handling : if cwp is on the last window, then we use the + registers 'after' the end */ + if (index < 8 && env->cwp == env->nwindows - 1) + index += 16 * env->nwindows; + return index; +} + +/* save the register window 'cwp1' */ +static inline void save_window_offset(CPUSPARCState *env, int cwp1) +{ + unsigned int i; + abi_ulong sp_ptr; + + sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; +#ifdef TARGET_SPARC64 + if (sp_ptr & 3) + sp_ptr += SPARC64_STACK_BIAS; +#endif +#if defined(DEBUG_WIN) + printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n", + sp_ptr, cwp1); +#endif + for(i = 0; i < 16; i++) { + /* FIXME - what to do if put_user() fails? */ + put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); + sp_ptr += sizeof(abi_ulong); + } +} + +static void save_window(CPUSPARCState *env) +{ +#ifndef TARGET_SPARC64 + unsigned int new_wim; + new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) & + ((1LL << env->nwindows) - 1); + save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); + env->wim = new_wim; +#else + save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); + env->cansave++; + env->canrestore--; +#endif +} + +static void restore_window(CPUSPARCState *env) +{ +#ifndef TARGET_SPARC64 + unsigned int new_wim; +#endif + unsigned int i, cwp1; + abi_ulong sp_ptr; + +#ifndef TARGET_SPARC64 + new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) & + ((1LL << env->nwindows) - 1); +#endif + + /* restore the invalid window */ + cwp1 = cpu_cwp_inc(env, env->cwp + 1); + sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; +#ifdef TARGET_SPARC64 + if (sp_ptr & 3) + sp_ptr += SPARC64_STACK_BIAS; +#endif +#if defined(DEBUG_WIN) + printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n", + sp_ptr, cwp1); +#endif + for(i = 0; i < 16; i++) { + /* FIXME - what to do if get_user() fails? */ + get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); + sp_ptr += sizeof(abi_ulong); + } +#ifdef TARGET_SPARC64 + env->canrestore++; + if (env->cleanwin < env->nwindows - 1) + env->cleanwin++; + env->cansave--; +#else + env->wim = new_wim; +#endif +} + +static void flush_windows(CPUSPARCState *env) +{ + int offset, cwp1; + + offset = 1; + for(;;) { + /* if restore would invoke restore_window(), then we can stop */ + cwp1 = cpu_cwp_inc(env, env->cwp + offset); +#ifndef TARGET_SPARC64 + if (env->wim & (1 << cwp1)) + break; +#else + if (env->canrestore == 0) + break; + env->cansave++; + env->canrestore--; +#endif + save_window_offset(env, cwp1); + offset++; + } + cwp1 = cpu_cwp_inc(env, env->cwp + 1); +#ifndef TARGET_SPARC64 + /* set wim so that restore will reload the registers */ + env->wim = 1 << cwp1; +#endif +#if defined(DEBUG_WIN) + printf("flush_windows: nb=%d\n", offset - 1); +#endif +} + +void cpu_loop (CPUSPARCState *env) +{ + CPUState *cs = CPU(sparc_env_get_cpu(env)); + int trapnr; + abi_long ret; + target_siginfo_t info; + + while (1) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + /* Compute PSR before exposing state. */ + if (env->cc_op != CC_OP_FLAGS) { + cpu_get_psr(env); + } + + switch (trapnr) { +#ifndef TARGET_SPARC64 + case 0x88: + case 0x90: +#else + case 0x110: + case 0x16d: +#endif + ret = do_syscall (env, env->gregs[1], + env->regwptr[0], env->regwptr[1], + env->regwptr[2], env->regwptr[3], + env->regwptr[4], env->regwptr[5], + 0, 0); + if (ret == -TARGET_ERESTARTSYS || ret == -TARGET_QEMU_ESIGRETURN) { + break; + } + if ((abi_ulong)ret >= (abi_ulong)(-515)) { +#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) + env->xcc |= PSR_CARRY; +#else + env->psr |= PSR_CARRY; +#endif + ret = -ret; + } else { +#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) + env->xcc &= ~PSR_CARRY; +#else + env->psr &= ~PSR_CARRY; +#endif + } + env->regwptr[0] = ret; + /* next instruction */ + env->pc = env->npc; + env->npc = env->npc + 4; + break; + case 0x83: /* flush windows */ +#ifdef TARGET_ABI32 + case 0x103: +#endif + flush_windows(env); + /* next instruction */ + env->pc = env->npc; + env->npc = env->npc + 4; + break; +#ifndef TARGET_SPARC64 + case TT_WIN_OVF: /* window overflow */ + save_window(env); + break; + case TT_WIN_UNF: /* window underflow */ + restore_window(env); + break; + case TT_TFAULT: + case TT_DFAULT: + { + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->mmuregs[4]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; +#else + case TT_SPILL: /* window overflow */ + save_window(env); + break; + case TT_FILL: /* window underflow */ + restore_window(env); + break; + case TT_TFAULT: + case TT_DFAULT: + { + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + if (trapnr == TT_DFAULT) + info._sifields._sigfault._addr = env->dmmu.mmuregs[4]; + else + info._sifields._sigfault._addr = cpu_tsptr(env)->tpc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; +#ifndef TARGET_ABI32 + case 0x16e: + flush_windows(env); + sparc64_get_context(env); + break; + case 0x16f: + flush_windows(env); + sparc64_set_context(env); + break; +#endif +#endif + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case TT_ILL_INSN: + { + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPC; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + break; + case EXCP_DEBUG: + { + int sig; + + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) + { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + } + } + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: + printf ("Unhandled trap: 0x%x\n", trapnr); + cpu_dump_state(cs, stderr, fprintf, 0); + exit(EXIT_FAILURE); + } + process_pending_signals (env); + } +} diff --git a/linux-user/sparc64/cpu_loop.inc.c b/linux-user/sparc64/cpu_loop.inc.c new file mode 100644 index 0000000000..ba4765b4db --- /dev/null +++ b/linux-user/sparc64/cpu_loop.inc.c @@ -0,0 +1 @@ +#include "../sparc/cpu_loop.inc.c" diff --git a/linux-user/tilegx/cpu_loop.inc.c b/linux-user/tilegx/cpu_loop.inc.c new file mode 100644 index 0000000000..afde8103bb --- /dev/null +++ b/linux-user/tilegx/cpu_loop.inc.c @@ -0,0 +1,251 @@ +static void gen_sigill_reg(CPUTLGState *env) +{ + target_siginfo_t info; + + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_PRVREG; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); +} + +static void do_signal(CPUTLGState *env, int signo, int sigcode) +{ + target_siginfo_t info; + + info.si_signo = signo; + info.si_errno = 0; + info._sifields._sigfault._addr = env->pc; + + if (signo == TARGET_SIGSEGV) { + /* The passed in sigcode is a dummy; check for a page mapping + and pass either MAPERR or ACCERR. */ + target_ulong addr = env->excaddr; + info._sifields._sigfault._addr = addr; + if (page_check_range(addr, 1, PAGE_VALID) < 0) { + sigcode = TARGET_SEGV_MAPERR; + } else { + sigcode = TARGET_SEGV_ACCERR; + } + } + info.si_code = sigcode; + + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); +} + +static void gen_sigsegv_maperr(CPUTLGState *env, target_ulong addr) +{ + env->excaddr = addr; + do_signal(env, TARGET_SIGSEGV, 0); +} + +static void set_regval(CPUTLGState *env, uint8_t reg, uint64_t val) +{ + if (unlikely(reg >= TILEGX_R_COUNT)) { + switch (reg) { + case TILEGX_R_SN: + case TILEGX_R_ZERO: + return; + case TILEGX_R_IDN0: + case TILEGX_R_IDN1: + case TILEGX_R_UDN0: + case TILEGX_R_UDN1: + case TILEGX_R_UDN2: + case TILEGX_R_UDN3: + gen_sigill_reg(env); + return; + default: + g_assert_not_reached(); + } + } + env->regs[reg] = val; +} + +/* + * Compare the 8-byte contents of the CmpValue SPR with the 8-byte value in + * memory at the address held in the first source register. If the values are + * not equal, then no memory operation is performed. If the values are equal, + * the 8-byte quantity from the second source register is written into memory + * at the address held in the first source register. In either case, the result + * of the instruction is the value read from memory. The compare and write to + * memory are atomic and thus can be used for synchronization purposes. This + * instruction only operates for addresses aligned to a 8-byte boundary. + * Unaligned memory access causes an Unaligned Data Reference interrupt. + * + * Functional Description (64-bit) + * uint64_t memVal = memoryReadDoubleWord (rf[SrcA]); + * rf[Dest] = memVal; + * if (memVal == SPR[CmpValueSPR]) + * memoryWriteDoubleWord (rf[SrcA], rf[SrcB]); + * + * Functional Description (32-bit) + * uint64_t memVal = signExtend32 (memoryReadWord (rf[SrcA])); + * rf[Dest] = memVal; + * if (memVal == signExtend32 (SPR[CmpValueSPR])) + * memoryWriteWord (rf[SrcA], rf[SrcB]); + * + * + * This function also processes exch and exch4 which need not process SPR. + */ +static void do_exch(CPUTLGState *env, bool quad, bool cmp) +{ + target_ulong addr; + target_long val, sprval; + + start_exclusive(); + + addr = env->atomic_srca; + if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) { + goto sigsegv_maperr; + } + + if (cmp) { + if (quad) { + sprval = env->spregs[TILEGX_SPR_CMPEXCH]; + } else { + sprval = sextract64(env->spregs[TILEGX_SPR_CMPEXCH], 0, 32); + } + } + + if (!cmp || val == sprval) { + target_long valb = env->atomic_srcb; + if (quad ? put_user_u64(valb, addr) : put_user_u32(valb, addr)) { + goto sigsegv_maperr; + } + } + + set_regval(env, env->atomic_dstr, val); + end_exclusive(); + return; + + sigsegv_maperr: + end_exclusive(); + gen_sigsegv_maperr(env, addr); +} + +static void do_fetch(CPUTLGState *env, int trapnr, bool quad) +{ + int8_t write = 1; + target_ulong addr; + target_long val, valb; + + start_exclusive(); + + addr = env->atomic_srca; + valb = env->atomic_srcb; + if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) { + goto sigsegv_maperr; + } + + switch (trapnr) { + case TILEGX_EXCP_OPCODE_FETCHADD: + case TILEGX_EXCP_OPCODE_FETCHADD4: + valb += val; + break; + case TILEGX_EXCP_OPCODE_FETCHADDGEZ: + valb += val; + if (valb < 0) { + write = 0; + } + break; + case TILEGX_EXCP_OPCODE_FETCHADDGEZ4: + valb += val; + if ((int32_t)valb < 0) { + write = 0; + } + break; + case TILEGX_EXCP_OPCODE_FETCHAND: + case TILEGX_EXCP_OPCODE_FETCHAND4: + valb &= val; + break; + case TILEGX_EXCP_OPCODE_FETCHOR: + case TILEGX_EXCP_OPCODE_FETCHOR4: + valb |= val; + break; + default: + g_assert_not_reached(); + } + + if (write) { + if (quad ? put_user_u64(valb, addr) : put_user_u32(valb, addr)) { + goto sigsegv_maperr; + } + } + + set_regval(env, env->atomic_dstr, val); + end_exclusive(); + return; + + sigsegv_maperr: + end_exclusive(); + gen_sigsegv_maperr(env, addr); +} + +void cpu_loop(CPUTLGState *env) +{ + CPUState *cs = CPU(tilegx_env_get_cpu(env)); + int trapnr; + + while (1) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + switch (trapnr) { + case TILEGX_EXCP_SYSCALL: + { + abi_ulong ret = do_syscall(env, env->regs[TILEGX_R_NR], + env->regs[0], env->regs[1], + env->regs[2], env->regs[3], + env->regs[4], env->regs[5], + env->regs[6], env->regs[7]); + if (ret == -TARGET_ERESTARTSYS) { + env->pc -= 8; + } else if (ret != -TARGET_QEMU_ESIGRETURN) { + env->regs[TILEGX_R_RE] = ret; + env->regs[TILEGX_R_ERR] = TILEGX_IS_ERRNO(ret) ? -ret : 0; + } + break; + } + case TILEGX_EXCP_OPCODE_EXCH: + do_exch(env, true, false); + break; + case TILEGX_EXCP_OPCODE_EXCH4: + do_exch(env, false, false); + break; + case TILEGX_EXCP_OPCODE_CMPEXCH: + do_exch(env, true, true); + break; + case TILEGX_EXCP_OPCODE_CMPEXCH4: + do_exch(env, false, true); + break; + case TILEGX_EXCP_OPCODE_FETCHADD: + case TILEGX_EXCP_OPCODE_FETCHADDGEZ: + case TILEGX_EXCP_OPCODE_FETCHAND: + case TILEGX_EXCP_OPCODE_FETCHOR: + do_fetch(env, trapnr, true); + break; + case TILEGX_EXCP_OPCODE_FETCHADD4: + case TILEGX_EXCP_OPCODE_FETCHADDGEZ4: + case TILEGX_EXCP_OPCODE_FETCHAND4: + case TILEGX_EXCP_OPCODE_FETCHOR4: + do_fetch(env, trapnr, false); + break; + case TILEGX_EXCP_SIGNAL: + do_signal(env, env->signo, env->sigcode); + break; + case TILEGX_EXCP_REG_IDN_ACCESS: + case TILEGX_EXCP_REG_UDN_ACCESS: + gen_sigill_reg(env); + break; + case EXCP_ATOMIC: + cpu_exec_step_atomic(cs); + break; + default: + fprintf(stderr, "trapnr is %d[0x%x].\n", trapnr, trapnr); + g_assert_not_reached(); + } + process_pending_signals(env); + } +} diff --git a/linux-user/x86_64/cpu_loop.inc.c b/linux-user/x86_64/cpu_loop.inc.c new file mode 100644 index 0000000000..b62e12ef9b --- /dev/null +++ b/linux-user/x86_64/cpu_loop.inc.c @@ -0,0 +1 @@ +#include "../i386/cpu_loop.inc.c" diff --git a/linux-user/xtensa/cpu_loop.inc.c b/linux-user/xtensa/cpu_loop.inc.c new file mode 100644 index 0000000000..ca8e014959 --- /dev/null +++ b/linux-user/xtensa/cpu_loop.inc.c @@ -0,0 +1,231 @@ +static void xtensa_rfw(CPUXtensaState *env) +{ + xtensa_restore_owb(env); + env->pc = env->sregs[EPC1]; +} + +static void xtensa_rfwu(CPUXtensaState *env) +{ + env->sregs[WINDOW_START] |= (1 << env->sregs[WINDOW_BASE]); + xtensa_rfw(env); +} + +static void xtensa_rfwo(CPUXtensaState *env) +{ + env->sregs[WINDOW_START] &= ~(1 << env->sregs[WINDOW_BASE]); + xtensa_rfw(env); +} + +static void xtensa_overflow4(CPUXtensaState *env) +{ + put_user_ual(env->regs[0], env->regs[5] - 16); + put_user_ual(env->regs[1], env->regs[5] - 12); + put_user_ual(env->regs[2], env->regs[5] - 8); + put_user_ual(env->regs[3], env->regs[5] - 4); + xtensa_rfwo(env); +} + +static void xtensa_underflow4(CPUXtensaState *env) +{ + get_user_ual(env->regs[0], env->regs[5] - 16); + get_user_ual(env->regs[1], env->regs[5] - 12); + get_user_ual(env->regs[2], env->regs[5] - 8); + get_user_ual(env->regs[3], env->regs[5] - 4); + xtensa_rfwu(env); +} + +static void xtensa_overflow8(CPUXtensaState *env) +{ + put_user_ual(env->regs[0], env->regs[9] - 16); + get_user_ual(env->regs[0], env->regs[1] - 12); + put_user_ual(env->regs[1], env->regs[9] - 12); + put_user_ual(env->regs[2], env->regs[9] - 8); + put_user_ual(env->regs[3], env->regs[9] - 4); + put_user_ual(env->regs[4], env->regs[0] - 32); + put_user_ual(env->regs[5], env->regs[0] - 28); + put_user_ual(env->regs[6], env->regs[0] - 24); + put_user_ual(env->regs[7], env->regs[0] - 20); + xtensa_rfwo(env); +} + +static void xtensa_underflow8(CPUXtensaState *env) +{ + get_user_ual(env->regs[0], env->regs[9] - 16); + get_user_ual(env->regs[1], env->regs[9] - 12); + get_user_ual(env->regs[2], env->regs[9] - 8); + get_user_ual(env->regs[7], env->regs[1] - 12); + get_user_ual(env->regs[3], env->regs[9] - 4); + get_user_ual(env->regs[4], env->regs[7] - 32); + get_user_ual(env->regs[5], env->regs[7] - 28); + get_user_ual(env->regs[6], env->regs[7] - 24); + get_user_ual(env->regs[7], env->regs[7] - 20); + xtensa_rfwu(env); +} + +static void xtensa_overflow12(CPUXtensaState *env) +{ + put_user_ual(env->regs[0], env->regs[13] - 16); + get_user_ual(env->regs[0], env->regs[1] - 12); + put_user_ual(env->regs[1], env->regs[13] - 12); + put_user_ual(env->regs[2], env->regs[13] - 8); + put_user_ual(env->regs[3], env->regs[13] - 4); + put_user_ual(env->regs[4], env->regs[0] - 48); + put_user_ual(env->regs[5], env->regs[0] - 44); + put_user_ual(env->regs[6], env->regs[0] - 40); + put_user_ual(env->regs[7], env->regs[0] - 36); + put_user_ual(env->regs[8], env->regs[0] - 32); + put_user_ual(env->regs[9], env->regs[0] - 28); + put_user_ual(env->regs[10], env->regs[0] - 24); + put_user_ual(env->regs[11], env->regs[0] - 20); + xtensa_rfwo(env); +} + +static void xtensa_underflow12(CPUXtensaState *env) +{ + get_user_ual(env->regs[0], env->regs[13] - 16); + get_user_ual(env->regs[1], env->regs[13] - 12); + get_user_ual(env->regs[2], env->regs[13] - 8); + get_user_ual(env->regs[11], env->regs[1] - 12); + get_user_ual(env->regs[3], env->regs[13] - 4); + get_user_ual(env->regs[4], env->regs[11] - 48); + get_user_ual(env->regs[5], env->regs[11] - 44); + get_user_ual(env->regs[6], env->regs[11] - 40); + get_user_ual(env->regs[7], env->regs[11] - 36); + get_user_ual(env->regs[8], env->regs[11] - 32); + get_user_ual(env->regs[9], env->regs[11] - 28); + get_user_ual(env->regs[10], env->regs[11] - 24); + get_user_ual(env->regs[11], env->regs[11] - 20); + xtensa_rfwu(env); +} + +void cpu_loop(CPUXtensaState *env) +{ + CPUState *cs = CPU(xtensa_env_get_cpu(env)); + target_siginfo_t info; + abi_ulong ret; + int trapnr; + + while (1) { + cpu_exec_start(cs); + trapnr = cpu_exec(cs); + cpu_exec_end(cs); + process_queued_cpu_work(cs); + + env->sregs[PS] &= ~PS_EXCM; + switch (trapnr) { + case EXCP_INTERRUPT: + break; + + case EXC_WINDOW_OVERFLOW4: + xtensa_overflow4(env); + break; + case EXC_WINDOW_UNDERFLOW4: + xtensa_underflow4(env); + break; + case EXC_WINDOW_OVERFLOW8: + xtensa_overflow8(env); + break; + case EXC_WINDOW_UNDERFLOW8: + xtensa_underflow8(env); + break; + case EXC_WINDOW_OVERFLOW12: + xtensa_overflow12(env); + break; + case EXC_WINDOW_UNDERFLOW12: + xtensa_underflow12(env); + break; + + case EXC_USER: + switch (env->sregs[EXCCAUSE]) { + case ILLEGAL_INSTRUCTION_CAUSE: + case PRIVILEGED_CAUSE: + info.si_signo = TARGET_SIGILL; + info.si_errno = 0; + info.si_code = + env->sregs[EXCCAUSE] == ILLEGAL_INSTRUCTION_CAUSE ? + TARGET_ILL_ILLOPC : TARGET_ILL_PRVOPC; + info._sifields._sigfault._addr = env->sregs[EPC1]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + + case SYSCALL_CAUSE: + env->pc += 3; + ret = do_syscall(env, env->regs[2], + env->regs[6], env->regs[3], + env->regs[4], env->regs[5], + env->regs[8], env->regs[9], 0, 0); + switch (ret) { + default: + env->regs[2] = ret; + break; + + case -TARGET_ERESTARTSYS: + case -TARGET_QEMU_ESIGRETURN: + break; + } + break; + + case ALLOCA_CAUSE: + env->sregs[PS] = deposit32(env->sregs[PS], + PS_OWB_SHIFT, + PS_OWB_LEN, + env->sregs[WINDOW_BASE]); + + switch (env->regs[0] & 0xc0000000) { + case 0x00000000: + case 0x40000000: + xtensa_rotate_window(env, -1); + xtensa_underflow4(env); + break; + + case 0x80000000: + xtensa_rotate_window(env, -2); + xtensa_underflow8(env); + break; + + case 0xc0000000: + xtensa_rotate_window(env, -3); + xtensa_underflow12(env); + break; + } + break; + + case INTEGER_DIVIDE_BY_ZERO_CAUSE: + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + info.si_code = TARGET_FPE_INTDIV; + info._sifields._sigfault._addr = env->sregs[EPC1]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + + case LOAD_PROHIBITED_CAUSE: + case STORE_PROHIBITED_CAUSE: + info.si_signo = TARGET_SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_ACCERR; + info._sifields._sigfault._addr = env->sregs[EXCVADDR]; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; + + default: + fprintf(stderr, "exccause = %d\n", env->sregs[EXCCAUSE]); + g_assert_not_reached(); + } + break; + case EXCP_DEBUG: + trapnr = gdb_handlesig(cs, TARGET_SIGTRAP); + if (trapnr) { + info.si_signo = trapnr; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, trapnr, QEMU_SI_FAULT, &info); + } + break; + case EXC_DEBUG: + default: + fprintf(stderr, "trapnr = %d\n", trapnr); + g_assert_not_reached(); + } + process_pending_signals(env); + } +}