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([2602:47:d483:7301:72f0:1ea7:85d2:141e]) by smtp.gmail.com with ESMTPSA id c10-20020aa78c0a000000b006875df4773fsm2050789pfd.163.2023.08.23.18.02.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Aug 2023 18:02:40 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Helge Deller Subject: [PATCH 02/13] linux-user: Emulate /proc/cpuinfo on aarch64 and arm Date: Wed, 23 Aug 2023 18:02:26 -0700 Message-Id: <20230824010237.1379735-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230824010237.1379735-1-richard.henderson@linaro.org> References: <20230824010237.1379735-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::42f; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_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+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org From: Helge Deller Add emulation for /proc/cpuinfo for arm architecture. The output below mimics output as seen on debian porterboxes. aarch64 output example: processor : 0 model name : ARMv8 Processor rev 0 (v8l) BogoMIPS : 100.00 Features : swp half thumb fast_mult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae aes pmull sha1 sha2 crc32 CPU implementer : 0x41 CPU architecture: 8 CPU variant : 0x1 CPU part : 0xd07 CPU revision : 0 arm 32-bit output example: processor : 0 model name : ARMv7 Processor rev 5 (armv7l) BogoMIPS : 100.00 Features : swp half thumb fast_mult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0f CPU part : 0xc07 CPU revision : 5 Signed-off-by: Helge Deller Reviewed-by: Richard Henderson Message-Id: <20230803214450.647040-3-deller@gmx.de> Signed-off-by: Richard Henderson --- linux-user/aarch64/target_proc.h | 2 +- linux-user/arm/target_proc.h | 102 +++++++++++++++++++++++- linux-user/loader.h | 6 +- linux-user/elfload.c | 130 ++++++++++++++++++++++++++++++- 4 files changed, 233 insertions(+), 7 deletions(-) diff --git a/linux-user/aarch64/target_proc.h b/linux-user/aarch64/target_proc.h index 43fe29ca72..907df4dcd2 100644 --- a/linux-user/aarch64/target_proc.h +++ b/linux-user/aarch64/target_proc.h @@ -1 +1 @@ -/* No target-specific /proc support */ +#include "../arm/target_proc.h" diff --git a/linux-user/arm/target_proc.h b/linux-user/arm/target_proc.h index 43fe29ca72..ac75af9ca6 100644 --- a/linux-user/arm/target_proc.h +++ b/linux-user/arm/target_proc.h @@ -1 +1,101 @@ -/* No target-specific /proc support */ +/* + * Arm specific proc functions for linux-user + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#ifndef ARM_TARGET_PROC_H +#define ARM_TARGET_PROC_H + +static int open_cpuinfo(CPUArchState *cpu_env, int fd) +{ + ARMCPU *cpu = env_archcpu(cpu_env); + int arch, midr_rev, midr_part, midr_var, midr_impl; + target_ulong elf_hwcap = get_elf_hwcap(); + target_ulong elf_hwcap2 = get_elf_hwcap2(); + const char *elf_name; + int num_cpus, len_part, len_var; + +#if TARGET_BIG_ENDIAN +# define END_SUFFIX "b" +#else +# define END_SUFFIX "l" +#endif + + arch = 8; + elf_name = "v8" END_SUFFIX; + midr_rev = FIELD_EX32(cpu->midr, MIDR_EL1, REVISION); + midr_part = FIELD_EX32(cpu->midr, MIDR_EL1, PARTNUM); + midr_var = FIELD_EX32(cpu->midr, MIDR_EL1, VARIANT); + midr_impl = FIELD_EX32(cpu->midr, MIDR_EL1, IMPLEMENTER); + len_part = 3; + len_var = 1; + +#ifndef TARGET_AARCH64 + /* For simplicity, treat ARMv8 as an arm64 kernel with CONFIG_COMPAT. */ + if (!arm_feature(&cpu->env, ARM_FEATURE_V8)) { + if (arm_feature(&cpu->env, ARM_FEATURE_V7)) { + arch = 7; + midr_var = (cpu->midr >> 16) & 0x7f; + len_var = 2; + if (arm_feature(&cpu->env, ARM_FEATURE_M)) { + elf_name = "armv7m" END_SUFFIX; + } else { + elf_name = "armv7" END_SUFFIX; + } + } else { + midr_part = cpu->midr >> 4; + len_part = 7; + if (arm_feature(&cpu->env, ARM_FEATURE_V6)) { + arch = 6; + elf_name = "armv6" END_SUFFIX; + } else if (arm_feature(&cpu->env, ARM_FEATURE_V5)) { + arch = 5; + elf_name = "armv5t" END_SUFFIX; + } else { + arch = 4; + elf_name = "armv4" END_SUFFIX; + } + } + } +#endif + +#undef END_SUFFIX + + num_cpus = sysconf(_SC_NPROCESSORS_ONLN); + for (int i = 0; i < num_cpus; i++) { + dprintf(fd, + "processor\t: %d\n" + "model name\t: ARMv%d Processor rev %d (%s)\n" + "BogoMIPS\t: 100.00\n" + "Features\t:", + i, arch, midr_rev, elf_name); + + for (target_ulong j = elf_hwcap; j ; j &= j - 1) { + dprintf(fd, " %s", elf_hwcap_str(ctz64(j))); + } + for (target_ulong j = elf_hwcap2; j ; j &= j - 1) { + dprintf(fd, " %s", elf_hwcap2_str(ctz64(j))); + } + + dprintf(fd, "\n" + "CPU implementer\t: 0x%02x\n" + "CPU architecture: %d\n" + "CPU variant\t: 0x%0*x\n", + midr_impl, arch, len_var, midr_var); + if (arch >= 7) { + dprintf(fd, "CPU part\t: 0x%0*x\n", len_part, midr_part); + } + dprintf(fd, "CPU revision\t: %d\n\n", midr_rev); + } + + if (arch < 8) { + dprintf(fd, "Hardware\t: QEMU v%s %s\n", QEMU_VERSION, + cpu->dtb_compatible ? : ""); + dprintf(fd, "Revision\t: 0000\n"); + dprintf(fd, "Serial\t\t: 0000000000000000\n"); + } + return 0; +} +#define HAVE_ARCH_PROC_CPUINFO + +#endif /* ARM_TARGET_PROC_H */ diff --git a/linux-user/loader.h b/linux-user/loader.h index 59cbeacf24..324e5c872a 100644 --- a/linux-user/loader.h +++ b/linux-user/loader.h @@ -56,9 +56,13 @@ abi_long memcpy_to_target(abi_ulong dest, const void *src, extern unsigned long guest_stack_size; -#ifdef TARGET_S390X +#if defined(TARGET_S390X) || defined(TARGET_AARCH64) || defined(TARGET_ARM) uint32_t get_elf_hwcap(void); const char *elf_hwcap_str(uint32_t bit); #endif +#if defined(TARGET_AARCH64) || defined(TARGET_ARM) +uint32_t get_elf_hwcap2(void); +const char *elf_hwcap2_str(uint32_t bit); +#endif #endif /* LINUX_USER_LOADER_H */ diff --git a/linux-user/elfload.c b/linux-user/elfload.c index ac03beb01b..d5f67de288 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -466,7 +466,7 @@ static bool init_guest_commpage(void) #define ELF_HWCAP get_elf_hwcap() #define ELF_HWCAP2 get_elf_hwcap2() -static uint32_t get_elf_hwcap(void) +uint32_t get_elf_hwcap(void) { ARMCPU *cpu = ARM_CPU(thread_cpu); uint32_t hwcaps = 0; @@ -508,7 +508,7 @@ static uint32_t get_elf_hwcap(void) return hwcaps; } -static uint32_t get_elf_hwcap2(void) +uint32_t get_elf_hwcap2(void) { ARMCPU *cpu = ARM_CPU(thread_cpu); uint32_t hwcaps = 0; @@ -521,6 +521,49 @@ static uint32_t get_elf_hwcap2(void) return hwcaps; } +const char *elf_hwcap_str(uint32_t bit) +{ + static const char *hwcap_str[] = { + [__builtin_ctz(ARM_HWCAP_ARM_SWP )] = "swp", + [__builtin_ctz(ARM_HWCAP_ARM_HALF )] = "half", + [__builtin_ctz(ARM_HWCAP_ARM_THUMB )] = "thumb", + [__builtin_ctz(ARM_HWCAP_ARM_26BIT )] = "26bit", + [__builtin_ctz(ARM_HWCAP_ARM_FAST_MULT)] = "fast_mult", + [__builtin_ctz(ARM_HWCAP_ARM_FPA )] = "fpa", + [__builtin_ctz(ARM_HWCAP_ARM_VFP )] = "vfp", + [__builtin_ctz(ARM_HWCAP_ARM_EDSP )] = "edsp", + [__builtin_ctz(ARM_HWCAP_ARM_JAVA )] = "java", + [__builtin_ctz(ARM_HWCAP_ARM_IWMMXT )] = "iwmmxt", + [__builtin_ctz(ARM_HWCAP_ARM_CRUNCH )] = "crunch", + [__builtin_ctz(ARM_HWCAP_ARM_THUMBEE )] = "thumbee", + [__builtin_ctz(ARM_HWCAP_ARM_NEON )] = "neon", + [__builtin_ctz(ARM_HWCAP_ARM_VFPv3 )] = "vfpv3", + [__builtin_ctz(ARM_HWCAP_ARM_VFPv3D16 )] = "vfpv3d16", + [__builtin_ctz(ARM_HWCAP_ARM_TLS )] = "tls", + [__builtin_ctz(ARM_HWCAP_ARM_VFPv4 )] = "vfpv4", + [__builtin_ctz(ARM_HWCAP_ARM_IDIVA )] = "idiva", + [__builtin_ctz(ARM_HWCAP_ARM_IDIVT )] = "idivt", + [__builtin_ctz(ARM_HWCAP_ARM_VFPD32 )] = "vfpd32", + [__builtin_ctz(ARM_HWCAP_ARM_LPAE )] = "lpae", + [__builtin_ctz(ARM_HWCAP_ARM_EVTSTRM )] = "evtstrm", + }; + + return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL; +} + +const char *elf_hwcap2_str(uint32_t bit) +{ + static const char *hwcap_str[] = { + [__builtin_ctz(ARM_HWCAP2_ARM_AES )] = "aes", + [__builtin_ctz(ARM_HWCAP2_ARM_PMULL)] = "pmull", + [__builtin_ctz(ARM_HWCAP2_ARM_SHA1 )] = "sha1", + [__builtin_ctz(ARM_HWCAP2_ARM_SHA2 )] = "sha2", + [__builtin_ctz(ARM_HWCAP2_ARM_CRC32)] = "crc32", + }; + + return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL; +} + #undef GET_FEATURE #undef GET_FEATURE_ID @@ -668,7 +711,7 @@ enum { #define GET_FEATURE_ID(feat, hwcap) \ do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0) -static uint32_t get_elf_hwcap(void) +uint32_t get_elf_hwcap(void) { ARMCPU *cpu = ARM_CPU(thread_cpu); uint32_t hwcaps = 0; @@ -706,7 +749,7 @@ static uint32_t get_elf_hwcap(void) return hwcaps; } -static uint32_t get_elf_hwcap2(void) +uint32_t get_elf_hwcap2(void) { ARMCPU *cpu = ARM_CPU(thread_cpu); uint32_t hwcaps = 0; @@ -741,6 +784,85 @@ static uint32_t get_elf_hwcap2(void) return hwcaps; } +const char *elf_hwcap_str(uint32_t bit) +{ + static const char *hwcap_str[] = { + [__builtin_ctz(ARM_HWCAP_A64_FP )] = "fp", + [__builtin_ctz(ARM_HWCAP_A64_ASIMD )] = "asimd", + [__builtin_ctz(ARM_HWCAP_A64_EVTSTRM )] = "evtstrm", + [__builtin_ctz(ARM_HWCAP_A64_AES )] = "aes", + [__builtin_ctz(ARM_HWCAP_A64_PMULL )] = "pmull", + [__builtin_ctz(ARM_HWCAP_A64_SHA1 )] = "sha1", + [__builtin_ctz(ARM_HWCAP_A64_SHA2 )] = "sha2", + [__builtin_ctz(ARM_HWCAP_A64_CRC32 )] = "crc32", + [__builtin_ctz(ARM_HWCAP_A64_ATOMICS )] = "atomics", + [__builtin_ctz(ARM_HWCAP_A64_FPHP )] = "fphp", + [__builtin_ctz(ARM_HWCAP_A64_ASIMDHP )] = "asimdhp", + [__builtin_ctz(ARM_HWCAP_A64_CPUID )] = "cpuid", + [__builtin_ctz(ARM_HWCAP_A64_ASIMDRDM)] = "asimdrdm", + [__builtin_ctz(ARM_HWCAP_A64_JSCVT )] = "jscvt", + [__builtin_ctz(ARM_HWCAP_A64_FCMA )] = "fcma", + [__builtin_ctz(ARM_HWCAP_A64_LRCPC )] = "lrcpc", + [__builtin_ctz(ARM_HWCAP_A64_DCPOP )] = "dcpop", + [__builtin_ctz(ARM_HWCAP_A64_SHA3 )] = "sha3", + [__builtin_ctz(ARM_HWCAP_A64_SM3 )] = "sm3", + [__builtin_ctz(ARM_HWCAP_A64_SM4 )] = "sm4", + [__builtin_ctz(ARM_HWCAP_A64_ASIMDDP )] = "asimddp", + [__builtin_ctz(ARM_HWCAP_A64_SHA512 )] = "sha512", + [__builtin_ctz(ARM_HWCAP_A64_SVE )] = "sve", + [__builtin_ctz(ARM_HWCAP_A64_ASIMDFHM)] = "asimdfhm", + [__builtin_ctz(ARM_HWCAP_A64_DIT )] = "dit", + [__builtin_ctz(ARM_HWCAP_A64_USCAT )] = "uscat", + [__builtin_ctz(ARM_HWCAP_A64_ILRCPC )] = "ilrcpc", + [__builtin_ctz(ARM_HWCAP_A64_FLAGM )] = "flagm", + [__builtin_ctz(ARM_HWCAP_A64_SSBS )] = "ssbs", + [__builtin_ctz(ARM_HWCAP_A64_SB )] = "sb", + [__builtin_ctz(ARM_HWCAP_A64_PACA )] = "paca", + [__builtin_ctz(ARM_HWCAP_A64_PACG )] = "pacg", + }; + + return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL; +} + +const char *elf_hwcap2_str(uint32_t bit) +{ + static const char *hwcap_str[] = { + [__builtin_ctz(ARM_HWCAP2_A64_DCPODP )] = "dcpodp", + [__builtin_ctz(ARM_HWCAP2_A64_SVE2 )] = "sve2", + [__builtin_ctz(ARM_HWCAP2_A64_SVEAES )] = "sveaes", + [__builtin_ctz(ARM_HWCAP2_A64_SVEPMULL )] = "svepmull", + [__builtin_ctz(ARM_HWCAP2_A64_SVEBITPERM )] = "svebitperm", + [__builtin_ctz(ARM_HWCAP2_A64_SVESHA3 )] = "svesha3", + [__builtin_ctz(ARM_HWCAP2_A64_SVESM4 )] = "svesm4", + [__builtin_ctz(ARM_HWCAP2_A64_FLAGM2 )] = "flagm2", + [__builtin_ctz(ARM_HWCAP2_A64_FRINT )] = "frint", + [__builtin_ctz(ARM_HWCAP2_A64_SVEI8MM )] = "svei8mm", + [__builtin_ctz(ARM_HWCAP2_A64_SVEF32MM )] = "svef32mm", + [__builtin_ctz(ARM_HWCAP2_A64_SVEF64MM )] = "svef64mm", + [__builtin_ctz(ARM_HWCAP2_A64_SVEBF16 )] = "svebf16", + [__builtin_ctz(ARM_HWCAP2_A64_I8MM )] = "i8mm", + [__builtin_ctz(ARM_HWCAP2_A64_BF16 )] = "bf16", + [__builtin_ctz(ARM_HWCAP2_A64_DGH )] = "dgh", + [__builtin_ctz(ARM_HWCAP2_A64_RNG )] = "rng", + [__builtin_ctz(ARM_HWCAP2_A64_BTI )] = "bti", + [__builtin_ctz(ARM_HWCAP2_A64_MTE )] = "mte", + [__builtin_ctz(ARM_HWCAP2_A64_ECV )] = "ecv", + [__builtin_ctz(ARM_HWCAP2_A64_AFP )] = "afp", + [__builtin_ctz(ARM_HWCAP2_A64_RPRES )] = "rpres", + [__builtin_ctz(ARM_HWCAP2_A64_MTE3 )] = "mte3", + [__builtin_ctz(ARM_HWCAP2_A64_SME )] = "sme", + [__builtin_ctz(ARM_HWCAP2_A64_SME_I16I64 )] = "sme_i16i64", + [__builtin_ctz(ARM_HWCAP2_A64_SME_F64F64 )] = "sme_f64f64", + [__builtin_ctz(ARM_HWCAP2_A64_SME_I8I32 )] = "sme_i8i32", + [__builtin_ctz(ARM_HWCAP2_A64_SME_F16F32 )] = "sme_f16f32", + [__builtin_ctz(ARM_HWCAP2_A64_SME_B16F32 )] = "sme_b16f32", + [__builtin_ctz(ARM_HWCAP2_A64_SME_F32F32 )] = "sme_f32f32", + [__builtin_ctz(ARM_HWCAP2_A64_SME_FA64 )] = "sme_fa64", + }; + + return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL; +} + #undef GET_FEATURE_ID #endif /* not TARGET_AARCH64 */