diff options
| -rw-r--r-- | linux-user/elfload.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 6de30f4bc0..508cb379b0 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -300,6 +300,64 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i #endif #define ELF_ARCH EM_PPC +/* Feature masks for the Aux Vector Hardware Capabilities (AT_HWCAP). + See arch/powerpc/include/asm/cputable.h. */ +enum { + PPC_FEATURE_32 = 0x80000000, + PPC_FEATURE_64 = 0x40000000, + PPC_FEATURE_601_INSTR = 0x20000000, + PPC_FEATURE_HAS_ALTIVEC = 0x10000000, + PPC_FEATURE_HAS_FPU = 0x08000000, + PPC_FEATURE_HAS_MMU = 0x04000000, + PPC_FEATURE_HAS_4xxMAC = 0x02000000, + PPC_FEATURE_UNIFIED_CACHE = 0x01000000, + PPC_FEATURE_HAS_SPE = 0x00800000, + PPC_FEATURE_HAS_EFP_SINGLE = 0x00400000, + PPC_FEATURE_HAS_EFP_DOUBLE = 0x00200000, + PPC_FEATURE_NO_TB = 0x00100000, + PPC_FEATURE_POWER4 = 0x00080000, + PPC_FEATURE_POWER5 = 0x00040000, + PPC_FEATURE_POWER5_PLUS = 0x00020000, + PPC_FEATURE_CELL = 0x00010000, + PPC_FEATURE_BOOKE = 0x00008000, + PPC_FEATURE_SMT = 0x00004000, + PPC_FEATURE_ICACHE_SNOOP = 0x00002000, + PPC_FEATURE_ARCH_2_05 = 0x00001000, + PPC_FEATURE_PA6T = 0x00000800, + PPC_FEATURE_HAS_DFP = 0x00000400, + PPC_FEATURE_POWER6_EXT = 0x00000200, + PPC_FEATURE_ARCH_2_06 = 0x00000100, + PPC_FEATURE_HAS_VSX = 0x00000080, + PPC_FEATURE_PSERIES_PERFMON_COMPAT = 0x00000040, + + PPC_FEATURE_TRUE_LE = 0x00000002, + PPC_FEATURE_PPC_LE = 0x00000001, +}; + +#define ELF_HWCAP get_elf_hwcap() + +static uint32_t get_elf_hwcap(void) +{ + CPUState *e = thread_env; + uint32_t features = 0; + + /* We don't have to be terribly complete here; the high points are + Altivec/FP/SPE support. Anything else is just a bonus. */ +#define GET_FEATURE(flag, feature) \ + do {if (e->insns_flags & flag) features |= feature; } while(0) + GET_FEATURE(PPC_64B, PPC_FEATURE_64); + GET_FEATURE(PPC_FLOAT, PPC_FEATURE_HAS_FPU); + GET_FEATURE(PPC_ALTIVEC, PPC_FEATURE_HAS_ALTIVEC); + GET_FEATURE(PPC_SPE, PPC_FEATURE_HAS_SPE); + GET_FEATURE(PPC_SPE_SINGLE, PPC_FEATURE_HAS_EFP_SINGLE); + GET_FEATURE(PPC_SPE_DOUBLE, PPC_FEATURE_HAS_EFP_DOUBLE); + GET_FEATURE(PPC_BOOKE, PPC_FEATURE_BOOKE); + GET_FEATURE(PPC_405_MAC, PPC_FEATURE_HAS_4xxMAC); +#undef GET_FEATURE + + return features; +} + /* * We need to put in some extra aux table entries to tell glibc what * the cache block size is, so it can use the dcbz instruction safely. |