diff options
| author | Tom Musta <tommusta@gmail.com> | 2014-06-16 11:03:22 -0500 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-06-27 13:48:22 +0200 |
| commit | a60438ddd68d45bc378b324fe7ecc61452d4f131 (patch) | |
| tree | 59696de26b4a19dbfc31620351ba58db6b26fdf4 /linux-user/elfload.c | |
| parent | 0e019746d7c27899c832562a72d736667d7ce1b7 (diff) | |
linux-user: Support HWCAP2 in PowerPC
Set bits in the AT_HWCAP2 entry of the AUXV. Specifically, detect and set bits
for bctar, ISEL and ISA 2.07.
Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'linux-user/elfload.c')
| -rw-r--r-- | linux-user/elfload.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 9a41882dcf..60777fecf6 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -736,6 +736,14 @@ enum { QEMU_PPC_FEATURE_TRUE_LE = 0x00000002, QEMU_PPC_FEATURE_PPC_LE = 0x00000001, + + /* Feature definitions in AT_HWCAP2. */ + QEMU_PPC_FEATURE2_ARCH_2_07 = 0x80000000, /* ISA 2.07 */ + QEMU_PPC_FEATURE2_HAS_HTM = 0x40000000, /* Hardware Transactional Memory */ + QEMU_PPC_FEATURE2_HAS_DSCR = 0x20000000, /* Data Stream Control Register */ + QEMU_PPC_FEATURE2_HAS_EBB = 0x10000000, /* Event Base Branching */ + QEMU_PPC_FEATURE2_HAS_ISEL = 0x08000000, /* Integer Select */ + QEMU_PPC_FEATURE2_HAS_TAR = 0x04000000, /* Target Address Register */ }; #define ELF_HWCAP get_elf_hwcap() @@ -770,6 +778,29 @@ static uint32_t get_elf_hwcap(void) return features; } +#define ELF_HWCAP2 get_elf_hwcap2() + +static uint32_t get_elf_hwcap2(void) +{ + PowerPCCPU *cpu = POWERPC_CPU(thread_cpu); + uint32_t features = 0; + +#define GET_FEATURE(flag, feature) \ + do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0) +#define GET_FEATURE2(flag, feature) \ + do { if (cpu->env.insns_flags2 & flag) { features |= feature; } } while (0) + + GET_FEATURE(PPC_ISEL, QEMU_PPC_FEATURE2_HAS_ISEL); + GET_FEATURE2(PPC2_BCTAR_ISA207, QEMU_PPC_FEATURE2_HAS_TAR); + GET_FEATURE2((PPC2_BCTAR_ISA207 | PPC2_LSQ_ISA207 | PPC2_ALTIVEC_207 | + PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07); + +#undef GET_FEATURE +#undef GET_FEATURE2 + + return features; +} + /* * The requirements here are: * - keep the final alignment of sp (sp & 0xf) |