From 2041df4a050cec1efbba4f87e2bb9c40e7fd6cdf Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Fri, 9 Aug 2019 10:11:56 -0700 Subject: [PATCH] linux-user: Add AT_HWCAP2 for aarch64-linux-user 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 Reviewed-by: Peter Maydell Message-Id: <20190809171156.3476-1-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier --- linux-user/elfload.c | 31 +++++++++++++++++++++++++++---- 1 file changed, 27 insertions(+), 4 deletions(-) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 3365e192eb..43c16a846d 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -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 */