From patchwork Mon May 29 19:24:31 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aurelien Jarno X-Patchwork-Id: 768315 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org 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 3wc6Kg1JFMz9s72 for ; Tue, 30 May 2017 05:31:03 +1000 (AEST) Received: from localhost ([::1]:50189 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dFQNY-0002kZ-Lg for incoming@patchwork.ozlabs.org; Mon, 29 May 2017 15:31:00 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38964) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dFQHf-0006Ua-C7 for qemu-devel@nongnu.org; Mon, 29 May 2017 15:24:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dFQHa-00076c-V2 for qemu-devel@nongnu.org; Mon, 29 May 2017 15:24:55 -0400 Received: from hall.aurel32.net ([2001:bc8:30d7:100::1]:42944) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dFQHa-00073E-KJ for qemu-devel@nongnu.org; Mon, 29 May 2017 15:24:50 -0400 Received: from [2001:bc8:30d7:120:9bb5:8936:7e6a:9e36] (helo=ohm.rr44.fr) by hall.aurel32.net with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1dFQHZ-0007Mn-5T; Mon, 29 May 2017 21:24:49 +0200 Received: from aurel32 by ohm.rr44.fr with local (Exim 4.89) (envelope-from ) id 1dFQHW-0001c3-5L; Mon, 29 May 2017 21:24:46 +0200 From: Aurelien Jarno To: qemu-devel@nongnu.org Date: Mon, 29 May 2017 21:24:31 +0200 Message-Id: <20170529192440.5990-21-aurelien@aurel32.net> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170529192440.5990-1-aurelien@aurel32.net> References: <20170529192440.5990-1-aurelien@aurel32.net> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2001:bc8:30d7:100::1 Subject: [Qemu-devel] [PATCH v2 20/29] target/s390x: improve MOVE LONG and MOVE LONG EXTENDED 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: Alexander Graf , Aurelien Jarno , Richard Henderson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" As MVCL and MVCLE only differ by their operands, use a common do_mvcl helper. Optimize it calling fast_memmove and fast_memset. Correctly write back addresses. Check that r1 and r2/r3 registers are even. Signed-off-by: Aurelien Jarno Reviewed-by: Richard Henderson --- target/s390x/mem_helper.c | 90 +++++++++++++++++++++-------------------------- target/s390x/translate.c | 40 +++++++++++++++------ 2 files changed, 70 insertions(+), 60 deletions(-) diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index 805794d82f..e41d21fb55 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -576,49 +576,60 @@ void HELPER(stam)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) } } -/* move long */ -uint32_t HELPER(mvcl)(CPUS390XState *env, uint32_t r1, uint32_t r2) +/* move long helper */ +static inline uint32_t do_mvcl(CPUS390XState *env, + uint64_t *dest, uint64_t *destlen, + uint64_t *src, uint64_t *srclen, + uint8_t pad, uintptr_t ra) { - uintptr_t ra = GETPC(); - uint64_t destlen = env->regs[r1 + 1] & 0xffffff; - uint64_t dest = get_address(env, r1); - uint64_t srclen = env->regs[r2 + 1] & 0xffffff; - uint64_t src = get_address(env, r2); - uint8_t pad = env->regs[r2 + 1] >> 24; - uint8_t v; + uint64_t len = MIN(*srclen, *destlen); uint32_t cc; - if (destlen == srclen) { + if (*destlen == *srclen) { cc = 0; - } else if (destlen < srclen) { + } else if (*destlen < *srclen) { cc = 1; } else { cc = 2; } - if (srclen > destlen) { - srclen = destlen; - } + /* Copy the src array */ + fast_memmove(env, *dest, *src, len, ra); + *src += len; + *srclen -= len; + *dest += len; + *destlen -= len; - for (; destlen && srclen; src++, dest++, destlen--, srclen--) { - v = cpu_ldub_data_ra(env, src, ra); - cpu_stb_data_ra(env, dest, v, ra); - } + /* Pad the remaining area */ + fast_memset(env, *dest, pad, *destlen, ra); + *dest += *destlen; + *destlen = 0; - for (; destlen; dest++, destlen--) { - cpu_stb_data_ra(env, dest, pad, ra); - } + return cc; +} - env->regs[r1 + 1] = destlen; - /* can't use srclen here, we trunc'ed it */ - env->regs[r2 + 1] -= src - env->regs[r2]; +/* move long */ +uint32_t HELPER(mvcl)(CPUS390XState *env, uint32_t r1, uint32_t r2) +{ + uintptr_t ra = GETPC(); + uint64_t destlen = env->regs[r1 + 1] & 0xffffff; + uint64_t dest = get_address(env, r1); + uint64_t srclen = env->regs[r2 + 1] & 0xffffff; + uint64_t src = get_address(env, r2); + uint8_t pad = env->regs[r2 + 1] >> 24; + uint32_t cc; + + cc = do_mvcl(env, &dest, &destlen, &src, &srclen, pad, ra); + + env->regs[r1 + 1] = deposit64(env->regs[r1 + 1], 0, 24, destlen); + env->regs[r2 + 1] = deposit64(env->regs[r2 + 1], 0, 24, srclen); set_address(env, r1, dest); set_address(env, r2, src); return cc; } -/* move long extended another memcopy insn with more bells and whistles */ +/* move long extended */ uint32_t HELPER(mvcle)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) { @@ -627,34 +638,13 @@ uint32_t HELPER(mvcle)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint64_t dest = get_address(env, r1); uint64_t srclen = get_length(env, r3 + 1); uint64_t src = get_address(env, r3); - uint8_t pad = a2 & 0xff; - uint8_t v; + uint8_t pad = a2; uint32_t cc; - if (destlen == srclen) { - cc = 0; - } else if (destlen < srclen) { - cc = 1; - } else { - cc = 2; - } - - if (srclen > destlen) { - srclen = destlen; - } - - for (; destlen && srclen; src++, dest++, destlen--, srclen--) { - v = cpu_ldub_data_ra(env, src, ra); - cpu_stb_data_ra(env, dest, v, ra); - } - - for (; destlen; dest++, destlen--) { - cpu_stb_data_ra(env, dest, pad, ra); - } + cc = do_mvcl(env, &dest, &destlen, &src, &srclen, pad, ra); - set_length(env, r1 + 1 , destlen); - /* can't use srclen here, we trunc'ed it */ - set_length(env, r3 + 1, env->regs[r3 + 1] - src - env->regs[r3]); + set_length(env, r1 + 1, destlen); + set_length(env, r3 + 1, srclen); set_address(env, r1, dest); set_address(env, r3, src); diff --git a/target/s390x/translate.c b/target/s390x/translate.c index 999d716f61..729d25d8f8 100644 --- a/target/s390x/translate.c +++ b/target/s390x/translate.c @@ -2981,22 +2981,42 @@ static ExitStatus op_mvcin(DisasContext *s, DisasOps *o) static ExitStatus op_mvcl(DisasContext *s, DisasOps *o) { - TCGv_i32 r1 = tcg_const_i32(get_field(s->fields, r1)); - TCGv_i32 r2 = tcg_const_i32(get_field(s->fields, r2)); - gen_helper_mvcl(cc_op, cpu_env, r1, r2); - tcg_temp_free_i32(r1); - tcg_temp_free_i32(r2); + int r1 = get_field(s->fields, r1); + int r2 = get_field(s->fields, r2); + TCGv_i32 t1, t2; + + /* r1 and r2 must be even. */ + if (r1 & 1 || r2 & 1) { + gen_program_exception(s, PGM_SPECIFICATION); + return EXIT_NORETURN; + } + + t1 = tcg_const_i32(r1); + t2 = tcg_const_i32(r2); + gen_helper_mvcl(cc_op, cpu_env, t1, t2); + tcg_temp_free_i32(t1); + tcg_temp_free_i32(t2); set_cc_static(s); return NO_EXIT; } static ExitStatus op_mvcle(DisasContext *s, DisasOps *o) { - TCGv_i32 r1 = tcg_const_i32(get_field(s->fields, r1)); - TCGv_i32 r3 = tcg_const_i32(get_field(s->fields, r3)); - gen_helper_mvcle(cc_op, cpu_env, r1, o->in2, r3); - tcg_temp_free_i32(r1); - tcg_temp_free_i32(r3); + int r1 = get_field(s->fields, r1); + int r3 = get_field(s->fields, r3); + TCGv_i32 t1, t3; + + /* r1 and r3 must be even. */ + if (r1 & 1 || r3 & 1) { + gen_program_exception(s, PGM_SPECIFICATION); + return EXIT_NORETURN; + } + + t1 = tcg_const_i32(r1); + t3 = tcg_const_i32(r3); + gen_helper_mvcle(cc_op, cpu_env, t1, o->in2, t3); + tcg_temp_free_i32(t1); + tcg_temp_free_i32(t3); set_cc_static(s); return NO_EXIT; }