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linux-user: Add AT_HWCAP2 for aarch64-linux-user

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Add the HWCAP2_* bits from kernel version v5.3-rc3.
Enable the bits corresponding to ARMv8.5-CondM and ARMv8.5-FRINT.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20190809171156.3476-1-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Richard Henderson 2019-08-09 10:11:56 -07:00 committed by Laurent Vivier
parent 9d3019bce3
commit 2041df4a05
1 changed files with 27 additions and 4 deletions
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31
linux-user/elfload.c
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@ -607,9 +607,23 @@ enum {
ARM_HWCAP_A64_SB = 1 << 29,
ARM_HWCAP_A64_PACA = 1 << 30,
ARM_HWCAP_A64_PACG = 1UL << 31,
ARM_HWCAP2_A64_DCPODP = 1 << 0,
ARM_HWCAP2_A64_SVE2 = 1 << 1,
ARM_HWCAP2_A64_SVEAES = 1 << 2,
ARM_HWCAP2_A64_SVEPMULL = 1 << 3,
ARM_HWCAP2_A64_SVEBITPERM = 1 << 4,
ARM_HWCAP2_A64_SVESHA3 = 1 << 5,
ARM_HWCAP2_A64_SVESM4 = 1 << 6,
ARM_HWCAP2_A64_FLAGM2 = 1 << 7,
ARM_HWCAP2_A64_FRINT = 1 << 8,
};
#define ELF_HWCAP get_elf_hwcap()
#define ELF_HWCAP get_elf_hwcap()
#define ELF_HWCAP2 get_elf_hwcap2()
#define GET_FEATURE_ID(feat, hwcap) \
do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0)
static uint32_t get_elf_hwcap(void)
{
@ -621,8 +635,6 @@ static uint32_t get_elf_hwcap(void)
hwcaps |= ARM_HWCAP_A64_CPUID;
/* probe for the extra features */
#define GET_FEATURE_ID(feat, hwcap) \
do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0)
GET_FEATURE_ID(aa64_aes, ARM_HWCAP_A64_AES);
GET_FEATURE_ID(aa64_pmull, ARM_HWCAP_A64_PMULL);
@ -645,11 +657,22 @@ static uint32_t get_elf_hwcap(void)
GET_FEATURE_ID(aa64_sb, ARM_HWCAP_A64_SB);
GET_FEATURE_ID(aa64_condm_4, ARM_HWCAP_A64_FLAGM);
#undef GET_FEATURE_ID
return hwcaps;
}
static uint32_t get_elf_hwcap2(void)
{
ARMCPU *cpu = ARM_CPU(thread_cpu);
uint32_t hwcaps = 0;
GET_FEATURE_ID(aa64_condm_5, ARM_HWCAP2_A64_FLAGM2);
GET_FEATURE_ID(aa64_frint, ARM_HWCAP2_A64_FRINT);
return hwcaps;
}
#undef GET_FEATURE_ID
#endif /* not TARGET_AARCH64 */
#endif /* TARGET_ARM */