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Mon, 20 Jun 2022 05:34:13 -0400 Received: from localhost.localdomain (unknown [10.2.5.185]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9DxD90JP7BiiNNOAA--.11084S5; Mon, 20 Jun 2022 17:34:05 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, laurent@vivier.eu, gaosong@loongson.cn, Xiaojuan Yang , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v18 03/13] linux-user: Add LoongArch elf support Date: Mon, 20 Jun 2022 17:33:51 +0800 Message-Id: <20220620093401.3727352-4-gaosong@loongson.cn> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220620093401.3727352-1-gaosong@loongson.cn> References: <20220620093401.3727352-1-gaosong@loongson.cn> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: AQAAf9DxD90JP7BiiNNOAA--.11084S5 X-Coremail-Antispam: 1UD129KBjvJXoWxXrWUGr45Kr48ZFWfCr18AFb_yoW5KFWrpF 1UCay3GrW8tFsIgw1fXFyj9F15XF4xuFW7Aa4xGFZ8C3s8J3y8Wr1vkr12kFy5Z3WDZ340 93sYvw40kr4UXFJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnUUvcSsGvfC2KfnxnUUI43ZEXa7xR_UUUUUUUUU== X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=114.242.206.163; envelope-from=gaosong@loongson.cn; helo=loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1655717894809100001 Signed-off-by: Song Gao Signed-off-by: Xiaojuan Yang Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- linux-user/elfload.c | 91 +++++++++++++++++++++++++++++ linux-user/loongarch64/target_elf.h | 12 ++++ 2 files changed, 103 insertions(+) create mode 100644 linux-user/loongarch64/target_elf.h diff --git a/linux-user/elfload.c b/linux-user/elfload.c index f7eae357f4..7351d0e089 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -918,6 +918,97 @@ static void elf_core_copy_regs(target_elf_gregset_t *r= egs, const CPUPPCState *en =20 #endif =20 +#ifdef TARGET_LOONGARCH64 + +#define ELF_START_MMAP 0x80000000 + +#define ELF_CLASS ELFCLASS64 +#define ELF_ARCH EM_LOONGARCH + +#define elf_check_arch(x) ((x) =3D=3D EM_LOONGARCH) + +static inline void init_thread(struct target_pt_regs *regs, + struct image_info *infop) +{ + /*Set crmd PG,DA =3D 1,0 */ + regs->csr.crmd =3D 2 << 3; + regs->csr.era =3D infop->entry; + regs->regs[3] =3D infop->start_stack; +} + +/* See linux kernel: arch/loongarch/include/asm/elf.h */ +#define ELF_NREG 45 +typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; + +enum { + TARGET_EF_R0 =3D 0, + TARGET_EF_CSR_ERA =3D TARGET_EF_R0 + 33, + TARGET_EF_CSR_BADV =3D TARGET_EF_R0 + 34, +}; + +static void elf_core_copy_regs(target_elf_gregset_t *regs, + const CPULoongArchState *env) +{ + int i; + + (*regs)[TARGET_EF_R0] =3D 0; + + for (i =3D 1; i < ARRAY_SIZE(env->gpr); i++) { + (*regs)[TARGET_EF_R0 + i] =3D tswapreg(env->gpr[i]); + } + + (*regs)[TARGET_EF_CSR_ERA] =3D tswapreg(env->pc); + (*regs)[TARGET_EF_CSR_BADV] =3D tswapreg(env->CSR_BADV); +} + +#define USE_ELF_CORE_DUMP +#define ELF_EXEC_PAGESIZE 4096 + +#define ELF_HWCAP get_elf_hwcap() + +/* See arch/loongarch/include/uapi/asm/hwcap.h */ +enum { + HWCAP_LOONGARCH_CPUCFG =3D (1 << 0), + HWCAP_LOONGARCH_LAM =3D (1 << 1), + HWCAP_LOONGARCH_UAL =3D (1 << 2), + HWCAP_LOONGARCH_FPU =3D (1 << 3), + HWCAP_LOONGARCH_LSX =3D (1 << 4), + HWCAP_LOONGARCH_LASX =3D (1 << 5), + HWCAP_LOONGARCH_CRC32 =3D (1 << 6), + HWCAP_LOONGARCH_COMPLEX =3D (1 << 7), + HWCAP_LOONGARCH_CRYPTO =3D (1 << 8), + HWCAP_LOONGARCH_LVZ =3D (1 << 9), + HWCAP_LOONGARCH_LBT_X86 =3D (1 << 10), + HWCAP_LOONGARCH_LBT_ARM =3D (1 << 11), + HWCAP_LOONGARCH_LBT_MIPS =3D (1 << 12), +}; + +static uint32_t get_elf_hwcap(void) +{ + LoongArchCPU *cpu =3D LOONGARCH_CPU(thread_cpu); + uint32_t hwcaps =3D 0; + + hwcaps |=3D HWCAP_LOONGARCH_CRC32; + + if (FIELD_EX32(cpu->env.cpucfg[1], CPUCFG1, UAL)) { + hwcaps |=3D HWCAP_LOONGARCH_UAL; + } + + if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, FP)) { + hwcaps |=3D HWCAP_LOONGARCH_FPU; + } + + if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LAM)) { + hwcaps |=3D HWCAP_LOONGARCH_LAM; + } + + return hwcaps; +} + +#define ELF_PLATFORM "loongarch" + +#endif /* TARGET_LOONGARCH64 */ + #ifdef TARGET_MIPS =20 #define ELF_START_MMAP 0x80000000 diff --git a/linux-user/loongarch64/target_elf.h b/linux-user/loongarch64/t= arget_elf.h new file mode 100644 index 0000000000..95c3f05a46 --- /dev/null +++ b/linux-user/loongarch64/target_elf.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (c) 2021 Loongson Technology Corporation Limited + */ + +#ifndef LOONGARCH_TARGET_ELF_H +#define LOONGARCH_TARGET_ELF_H +static inline const char *cpu_get_model(uint32_t eflags) +{ + return "la464"; +} +#endif --=20 2.31.1