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| author | Richard Henderson <richard.henderson@linaro.org> | 2025-07-27 21:23:05 -1000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2025-08-28 06:39:25 +1000 |
| commit | 48004ab0586ba01387efc37e7ada26607a1c183e (patch) | |
| tree | 6a1ad336fca1b6245ae6d2f32bf881fe529a2487 /linux-user/mips/elfload.c | |
| parent | 184e74b236df9ad42ddbf92011713259cd17caf1 (diff) | |
| download | focaccia-qemu-48004ab0586ba01387efc37e7ada26607a1c183e.tar.gz focaccia-qemu-48004ab0586ba01387efc37e7ada26607a1c183e.zip | |
linux-user: Move get_elf_hwcap to mips/elfload.c
Change the return type to abi_ulong, and pass in the cpu. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'linux-user/mips/elfload.c')
| -rw-r--r-- | linux-user/mips/elfload.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/linux-user/mips/elfload.c b/linux-user/mips/elfload.c index 04e3b76740..739f71c21b 100644 --- a/linux-user/mips/elfload.c +++ b/linux-user/mips/elfload.c @@ -42,3 +42,53 @@ const char *get_elf_cpu_model(uint32_t eflags) return "24Kf"; #endif } + +/* See arch/mips/include/uapi/asm/hwcap.h. */ +enum { + HWCAP_MIPS_R6 = (1 << 0), + HWCAP_MIPS_MSA = (1 << 1), + HWCAP_MIPS_CRC32 = (1 << 2), + HWCAP_MIPS_MIPS16 = (1 << 3), + HWCAP_MIPS_MDMX = (1 << 4), + HWCAP_MIPS_MIPS3D = (1 << 5), + HWCAP_MIPS_SMARTMIPS = (1 << 6), + HWCAP_MIPS_DSP = (1 << 7), + HWCAP_MIPS_DSP2 = (1 << 8), + HWCAP_MIPS_DSP3 = (1 << 9), + HWCAP_MIPS_MIPS16E2 = (1 << 10), + HWCAP_LOONGSON_MMI = (1 << 11), + HWCAP_LOONGSON_EXT = (1 << 12), + HWCAP_LOONGSON_EXT2 = (1 << 13), + HWCAP_LOONGSON_CPUCFG = (1 << 14), +}; + +#define GET_FEATURE_INSN(_flag, _hwcap) \ + do { if (cpu->env.insn_flags & (_flag)) { hwcaps |= _hwcap; } } while (0) + +#define GET_FEATURE_REG_SET(_reg, _mask, _hwcap) \ + do { if (cpu->env._reg & (_mask)) { hwcaps |= _hwcap; } } while (0) + +#define GET_FEATURE_REG_EQU(_reg, _start, _length, _val, _hwcap) \ + do { \ + if (extract32(cpu->env._reg, (_start), (_length)) == (_val)) { \ + hwcaps |= _hwcap; \ + } \ + } while (0) + +abi_ulong get_elf_hwcap(CPUState *cs) +{ + MIPSCPU *cpu = MIPS_CPU(cs); + abi_ulong hwcaps = 0; + + GET_FEATURE_REG_EQU(CP0_Config0, CP0C0_AR, CP0C0_AR_LENGTH, + 2, HWCAP_MIPS_R6); + GET_FEATURE_REG_SET(CP0_Config3, 1 << CP0C3_MSAP, HWCAP_MIPS_MSA); + GET_FEATURE_INSN(ASE_LMMI, HWCAP_LOONGSON_MMI); + GET_FEATURE_INSN(ASE_LEXT, HWCAP_LOONGSON_EXT); + + return hwcaps; +} + +#undef GET_FEATURE_REG_EQU +#undef GET_FEATURE_REG_SET +#undef GET_FEATURE_INSN |