From nobody Thu May 9 05:47:30 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=flygoat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1659384855800847.3229189039295; Mon, 1 Aug 2022 13:14:15 -0700 (PDT) Received: from localhost ([::1]:58628 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oIbnq-0003fY-G3 for importer@patchew.org; Mon, 01 Aug 2022 16:14:14 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44696) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oIbjO-0008Cb-So for qemu-devel@nongnu.org; Mon, 01 Aug 2022 16:09:38 -0400 Received: from wout4-smtp.messagingengine.com ([64.147.123.20]:33119) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oIbjN-0007N0-0h for qemu-devel@nongnu.org; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=64.147.123.20; envelope-from=jiaxun.yang@flygoat.com; helo=wout4-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, RCVD_IN_DNSWL_LOW=-0.7, 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: 1659384856017100001 Content-Type: text/plain; charset="utf-8" AT_BASE_PLATFORM is a elf auxiliary vector pointing to a string to pass some architecture information. Signed-off-by: Jiaxun Yang Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- linux-user/elfload.c | 29 +++++++++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index ce902dbd56..e7666c5c60 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -1718,6 +1718,10 @@ static inline void init_thread(struct target_pt_regs= *regs, =20 #endif /* TARGET_HEXAGON */ =20 +#ifndef ELF_BASE_PLATFORM +#define ELF_BASE_PLATFORM (NULL) +#endif + #ifndef ELF_PLATFORM #define ELF_PLATFORM (NULL) #endif @@ -2148,8 +2152,8 @@ static abi_ulong create_elf_tables(abi_ulong p, int a= rgc, int envc, int i; abi_ulong u_rand_bytes; uint8_t k_rand_bytes[16]; - abi_ulong u_platform; - const char *k_platform; + abi_ulong u_platform, u_base_platform; + const char *k_platform, *k_base_platform; const int n =3D sizeof(elf_addr_t); =20 sp =3D p; @@ -2171,6 +2175,22 @@ static abi_ulong create_elf_tables(abi_ulong p, int = argc, int envc, } } =20 + u_base_platform =3D 0; + k_base_platform =3D ELF_BASE_PLATFORM; + if (k_base_platform) { + size_t len =3D strlen(k_base_platform) + 1; + if (STACK_GROWS_DOWN) { + sp -=3D (len + n - 1) & ~(n - 1); + u_base_platform =3D sp; + /* FIXME - check return value of memcpy_to_target() for failur= e */ + memcpy_to_target(sp, k_base_platform, len); + } else { + memcpy_to_target(sp, k_base_platform, len); + u_base_platform =3D sp; + sp +=3D len + 1; + } + } + u_platform =3D 0; k_platform =3D ELF_PLATFORM; if (k_platform) { @@ -2212,6 +2232,8 @@ static abi_ulong create_elf_tables(abi_ulong p, int a= rgc, int envc, } =20 size =3D (DLINFO_ITEMS + 1) * 2; + if (k_base_platform) + size +=3D 2; if (k_platform) size +=3D 2; #ifdef DLINFO_ARCH_ITEMS @@ -2289,6 +2311,9 @@ static abi_ulong create_elf_tables(abi_ulong p, int a= rgc, int envc, NEW_AUX_ENT(AT_HWCAP2, (abi_ulong) ELF_HWCAP2); #endif =20 + if (u_base_platform) { + NEW_AUX_ENT(AT_BASE_PLATFORM, u_base_platform); + } if (u_platform) { NEW_AUX_ENT(AT_PLATFORM, u_platform); } --=20 2.32.1 (Apple Git-133) From nobody Thu May 9 05:47:30 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=flygoat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1659384691131755.1337918191967; Mon, 1 Aug 2022 13:11:31 -0700 (PDT) Received: from localhost ([::1]:55074 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oIblB-0001Aw-Ck for importer@patchew.org; Mon, 01 Aug 2022 16:11:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44714) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oIbjQ-0008DU-IC for qemu-devel@nongnu.org; Mon, 01 Aug 2022 16:09:40 -0400 Received: from wout4-smtp.messagingengine.com ([64.147.123.20]:52413) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oIbjO-0007NU-Ut for qemu-devel@nongnu.org; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=64.147.123.20; envelope-from=jiaxun.yang@flygoat.com; helo=wout4-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, RCVD_IN_DNSWL_LOW=-0.7, 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: 1659384693156100003 Content-Type: text/plain; charset="utf-8" Match most appropriate base platform string based on insn_flags. Logic is aligned with arch/mips/kernel/cpu-probe.c in Linux kernel. Signed-off-by: Jiaxun Yang Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- linux-user/elfload.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index e7666c5c60..8a4ac9787f 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -1050,6 +1050,37 @@ static uint32_t get_elf_hwcap(void) #define elf_check_abi(x) (!((x) & EF_MIPS_ABI2)) #endif =20 +#define ELF_BASE_PLATFORM get_elf_base_platform() + +#define MATCH_PLATFORM_INSN(_flags, _base_platform) \ + do { if ((cpu->env.insn_flags & (_flags)) =3D=3D _flags) \ + { return _base_platform; } } while (0) + +static const char *get_elf_base_platform(void) +{ + MIPSCPU *cpu =3D MIPS_CPU(thread_cpu); + + /* 64 bit ISAs goes first */ + MATCH_PLATFORM_INSN(CPU_MIPS64R6, "mips64r6"); + MATCH_PLATFORM_INSN(CPU_MIPS64R5, "mips64r5"); + MATCH_PLATFORM_INSN(CPU_MIPS64R2, "mips64r2"); + MATCH_PLATFORM_INSN(CPU_MIPS64R1, "mips64"); + MATCH_PLATFORM_INSN(CPU_MIPS5, "mips5"); + MATCH_PLATFORM_INSN(CPU_MIPS4, "mips4"); + MATCH_PLATFORM_INSN(CPU_MIPS3, "mips3"); + + /* 32 bit ISAs */ + MATCH_PLATFORM_INSN(CPU_MIPS32R6, "mips32r6"); + MATCH_PLATFORM_INSN(CPU_MIPS32R5, "mips32r5"); + MATCH_PLATFORM_INSN(CPU_MIPS32R2, "mips32r2"); + MATCH_PLATFORM_INSN(CPU_MIPS32R1, "mips32"); + MATCH_PLATFORM_INSN(CPU_MIPS2, "mips2"); + + /* Fallback */ + return "mips"; +} +#undef MATCH_PLATFORM_INSN + static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop) { --=20 2.32.1 (Apple Git-133)