diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2014-05-02 14:45:15 +0100 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2014-05-02 21:59:36 +0300 |
| commit | ad6919dc0ab3b8ae26d772e883aa8e709785d249 (patch) | |
| tree | e65ef0bd438bbe333b1bce0f6e69fb38c6e429dd /linux-user | |
| parent | 24e76ff06bcd0936ee8b04b15dca42efb7d614d1 (diff) | |
linux-user/elfload.c: Support ARM HWCAP2 flags
The ARM kernel has chosen to spill into the HWCAP2 ELF feature bit flags
early, even though it hasn't yet exhausted all 32 bits of the HWCAP word.
Add support for setting this in the same way we do for HWCAP.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/elfload.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c index ad07c43e75..995f999768 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -20,6 +20,7 @@ #undef ARCH_DLINFO #undef ELF_PLATFORM #undef ELF_HWCAP +#undef ELF_HWCAP2 #undef ELF_CLASS #undef ELF_DATA #undef ELF_ARCH @@ -353,6 +354,14 @@ enum ARM_HWCAP_ARM_EVTSTRM = 1 << 21, }; +enum { + ARM_HWCAP2_ARM_AES = 1 << 0, + ARM_HWCAP2_ARM_PMULL = 1 << 1, + ARM_HWCAP2_ARM_SHA1 = 1 << 2, + ARM_HWCAP2_ARM_SHA2 = 1 << 3, + ARM_HWCAP2_ARM_CRC32 = 1 << 4, +}; + /* The commpage only exists for 32 bit kernels */ #define TARGET_HAS_VALIDATE_GUEST_SPACE @@ -416,6 +425,7 @@ static int validate_guest_space(unsigned long guest_base, } #define ELF_HWCAP get_elf_hwcap() +#define ELF_HWCAP2 get_elf_hwcap2() static uint32_t get_elf_hwcap(void) { @@ -448,11 +458,22 @@ static uint32_t get_elf_hwcap(void) */ GET_FEATURE(ARM_FEATURE_VFP3, ARM_HWCAP_ARM_VFPD32); GET_FEATURE(ARM_FEATURE_LPAE, ARM_HWCAP_ARM_LPAE); -#undef GET_FEATURE return hwcaps; } +static uint32_t get_elf_hwcap2(void) +{ + ARMCPU *cpu = ARM_CPU(thread_cpu); + uint32_t hwcaps = 0; + + GET_FEATURE(ARM_FEATURE_V8_AES, ARM_HWCAP2_ARM_AES); + GET_FEATURE(ARM_FEATURE_CRC, ARM_HWCAP2_ARM_CRC32); + return hwcaps; +} + +#undef GET_FEATURE + #else /* 64 bit ARM definitions */ #define ELF_START_MMAP 0x80000000 @@ -1486,6 +1507,9 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, #ifdef DLINFO_ARCH_ITEMS size += DLINFO_ARCH_ITEMS * 2; #endif +#ifdef ELF_HWCAP2 + size += 2; +#endif size += envc + argc + 2; size += 1; /* argc itself */ size *= n; @@ -1519,6 +1543,10 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, NEW_AUX_ENT(AT_CLKTCK, (abi_ulong) sysconf(_SC_CLK_TCK)); NEW_AUX_ENT(AT_RANDOM, (abi_ulong) u_rand_bytes); +#ifdef ELF_HWCAP2 + NEW_AUX_ENT(AT_HWCAP2, (abi_ulong) ELF_HWCAP2); +#endif + if (k_platform) NEW_AUX_ENT(AT_PLATFORM, u_platform); #ifdef ARCH_DLINFO |