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linux-user: Emulate /proc/cpuinfo on aarch64 and arm

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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 <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230803214450.647040-3-deller@gmx.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Helge Deller 2023-08-03 23:44:48 +02:00 • committed by Richard Henderson
parent 121c8dd69d
commit a55b9e7226
4 changed files with 233 additions and 7 deletions
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6
linux-user/loader.h
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@ -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 */