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[2403:580b:97e8:0:82ce:f179:8a79:69f4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20b37e60c76sm78324235ad.269.2024.10.01.22.52.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Oct 2024 22:52:14 -0700 (PDT) From: Alistair Francis X-Google-Original-From: Alistair Francis To: qemu-devel@nongnu.org Cc: alistair23@gmail.com, Mark Corbin , Ajeet Singh , Richard Henderson , Alistair Francis Subject: [PULL v3 25/35] bsd-user: Add RISC-V signal trampoline setup function Date: Wed, 2 Oct 2024 15:50:38 +1000 Message-ID: <20241002055048.556083-26-alistair.francis@wdc.com> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241002055048.556083-1-alistair.francis@wdc.com> References: <20241002055048.556083-1-alistair.francis@wdc.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62c; envelope-from=alistair23@gmail.com; helo=mail-pl1-x62c.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Mark Corbin Implemented the 'setup_sigtramp' function for setting up the signal trampoline code in the RISC-V architecture. Signed-off-by: Mark Corbin Signed-off-by: Ajeet Singh Reviewed-by: Richard Henderson Message-ID: <20240916155119.14610-8-itachis@FreeBSD.org> Signed-off-by: Alistair Francis --- bsd-user/riscv/target_arch_sigtramp.h | 41 +++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 bsd-user/riscv/target_arch_sigtramp.h diff --git a/bsd-user/riscv/target_arch_sigtramp.h b/bsd-user/riscv/target_arch_sigtramp.h new file mode 100644 index 0000000000..dfe5076739 --- /dev/null +++ b/bsd-user/riscv/target_arch_sigtramp.h @@ -0,0 +1,41 @@ +/* + * RISC-V sigcode + * + * Copyright (c) 2019 Mark Corbin + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#ifndef TARGET_ARCH_SIGTRAMP_H +#define TARGET_ARCH_SIGTRAMP_H + +/* Compare with sigcode() in riscv/riscv/locore.S */ +static inline abi_long setup_sigtramp(abi_ulong offset, unsigned sigf_uc, + unsigned sys_sigreturn) +{ + uint32_t sys_exit = TARGET_FREEBSD_NR_exit; + + uint32_t sigtramp_code[] = { + /*1*/ const_le32(0x00010513), /*mv a0, sp*/ + /*2*/ const_le32(0x00050513 + (sigf_uc << 20)), /*addi a0,a0,sigf_uc*/ + /*3*/ const_le32(0x00000293 + (sys_sigreturn << 20)),/*li t0,sys_sigreturn*/ + /*4*/ const_le32(0x00000073), /*ecall*/ + /*5*/ const_le32(0x00000293 + (sys_exit << 20)), /*li t0,sys_exit*/ + /*6*/ const_le32(0x00000073), /*ecall*/ + /*7*/ const_le32(0xFF1FF06F) /*b -16*/ + }; + + return memcpy_to_target(offset, sigtramp_code, TARGET_SZSIGCODE); +} +#endif /* TARGET_ARCH_SIGTRAMP_H */