Mercurial > hg > truffle
diff src/cpu/x86/vm/vm_version_x86.hpp @ 4771:22cee0ee8927
Merge
author | kvn |
---|---|
date | Fri, 06 Jan 2012 20:09:20 -0800 |
parents | 7ab5f6318694 127b3692c168 |
children | 4a24c4f648bd |
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--- a/src/cpu/x86/vm/vm_version_x86.hpp Fri Jan 06 16:18:29 2012 -0800 +++ b/src/cpu/x86/vm/vm_version_x86.hpp Fri Jan 06 20:09:20 2012 -0800 @@ -78,7 +78,10 @@ sse4_2 : 1, : 2, popcnt : 1, - : 8; + : 3, + osxsave : 1, + avx : 1, + : 3; } bits; }; @@ -168,6 +171,15 @@ } bits; }; + union ExtCpuid7Edx { + uint32_t value; + struct { + uint32_t : 8, + tsc_invariance : 1, + : 23; + } bits; + }; + union ExtCpuid8Ecx { uint32_t value; struct { @@ -176,12 +188,31 @@ } bits; }; - union ExtCpuid7Edx { + union SefCpuid7Eax { + uint32_t value; + }; + + union SefCpuid7Ebx { uint32_t value; struct { - uint32_t : 8, - tsc_invariance : 1, - : 23; + uint32_t fsgsbase : 1, + : 2, + bmi1 : 1, + : 1, + avx2 : 1, + : 2, + bmi2 : 1, + : 23; + } bits; + }; + + union XemXcr0Eax { + uint32_t value; + struct { + uint32_t x87 : 1, + sse : 1, + ymm : 1, + : 29; } bits; }; @@ -211,7 +242,9 @@ CPU_POPCNT = (1 << 13), CPU_LZCNT = (1 << 14), CPU_TSC = (1 << 15), - CPU_TSCINV = (1 << 16) + CPU_TSCINV = (1 << 16), + CPU_AVX = (1 << 17), + CPU_AVX2 = (1 << 18) } cpuFeatureFlags; enum { @@ -250,6 +283,12 @@ uint32_t dcp_cpuid4_ecx; // unused currently uint32_t dcp_cpuid4_edx; // unused currently + // cpuid function 7 (structured extended features) + SefCpuid7Eax sef_cpuid7_eax; + SefCpuid7Ebx sef_cpuid7_ebx; + uint32_t sef_cpuid7_ecx; // unused currently + uint32_t sef_cpuid7_edx; // unused currently + // cpuid function 0xB (processor topology) // ecx = 0 uint32_t tpl_cpuidB0_eax; @@ -303,6 +342,10 @@ uint32_t ext_cpuid8_ebx; // reserved ExtCpuid8Ecx ext_cpuid8_ecx; uint32_t ext_cpuid8_edx; // reserved + + // extended control register XCR0 (the XFEATURE_ENABLED_MASK register) + XemXcr0Eax xem_xcr0_eax; + uint32_t xem_xcr0_edx; // reserved }; // The actual cpuid info block @@ -360,6 +403,14 @@ result |= CPU_SSE4_2; if (_cpuid_info.std_cpuid1_ecx.bits.popcnt != 0) result |= CPU_POPCNT; + if (_cpuid_info.std_cpuid1_ecx.bits.avx != 0 && + _cpuid_info.std_cpuid1_ecx.bits.osxsave != 0 && + _cpuid_info.xem_xcr0_eax.bits.sse != 0 && + _cpuid_info.xem_xcr0_eax.bits.ymm != 0) { + result |= CPU_AVX; + if (_cpuid_info.sef_cpuid7_ebx.bits.avx2 != 0) + result |= CPU_AVX2; + } if (_cpuid_info.std_cpuid1_edx.bits.tsc != 0) result |= CPU_TSC; if (_cpuid_info.ext_cpuid7_edx.bits.tsc_invariance != 0) @@ -386,6 +437,7 @@ static ByteSize std_cpuid0_offset() { return byte_offset_of(CpuidInfo, std_max_function); } static ByteSize std_cpuid1_offset() { return byte_offset_of(CpuidInfo, std_cpuid1_eax); } static ByteSize dcp_cpuid4_offset() { return byte_offset_of(CpuidInfo, dcp_cpuid4_eax); } + static ByteSize sef_cpuid7_offset() { return byte_offset_of(CpuidInfo, sef_cpuid7_eax); } static ByteSize ext_cpuid1_offset() { return byte_offset_of(CpuidInfo, ext_cpuid1_eax); } static ByteSize ext_cpuid5_offset() { return byte_offset_of(CpuidInfo, ext_cpuid5_eax); } static ByteSize ext_cpuid7_offset() { return byte_offset_of(CpuidInfo, ext_cpuid7_eax); } @@ -393,6 +445,7 @@ static ByteSize tpl_cpuidB0_offset() { return byte_offset_of(CpuidInfo, tpl_cpuidB0_eax); } static ByteSize tpl_cpuidB1_offset() { return byte_offset_of(CpuidInfo, tpl_cpuidB1_eax); } static ByteSize tpl_cpuidB2_offset() { return byte_offset_of(CpuidInfo, tpl_cpuidB2_eax); } + static ByteSize xem_xcr0_offset() { return byte_offset_of(CpuidInfo, xem_xcr0_eax); } // Initialization static void initialize(); @@ -483,6 +536,8 @@ static bool supports_sse4_1() { return (_cpuFeatures & CPU_SSE4_1) != 0; } static bool supports_sse4_2() { return (_cpuFeatures & CPU_SSE4_2) != 0; } static bool supports_popcnt() { return (_cpuFeatures & CPU_POPCNT) != 0; } + static bool supports_avx() { return (_cpuFeatures & CPU_AVX) != 0; } + static bool supports_avx2() { return (_cpuFeatures & CPU_AVX2) != 0; } static bool supports_tsc() { return (_cpuFeatures & CPU_TSC) != 0; } // Intel features