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vpachkov
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@ -79,18 +79,18 @@ DATA _rt0_amd64_lib_argv<>(SB)/8, $0
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GLOBL _rt0_amd64_lib_argv<>(SB),NOPTR, $8
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#ifdef GOAMD64_v2
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DATA bad_proc_msg<>+0x00(SB)/78, $"This program can only be run on processors with v2 microarchitecture support.\n"
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DATA bad_cpu_msg<>+0x00(SB)/84, $"This program can only be run on AMD64 processors with v2 microarchitecture support.\n"
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#endif
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#ifdef GOAMD64_v3
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DATA bad_proc_msg<>+0x00(SB)/78, $"This program can only be run on processors with v3 microarchitecture support.\n"
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DATA bad_cpu_msg<>+0x00(SB)/84, $"This program can only be run on AMD64 processors with v3 microarchitecture support.\n"
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#endif
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#ifdef GOAMD64_v4
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DATA bad_proc_msg<>+0x00(SB)/78, $"This program can only be run on processors with v4 microarchitecture support.\n"
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DATA bad_cpu_msg<>+0x00(SB)/84, $"This program can only be run on AMD64 processors with v4 microarchitecture support.\n"
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#endif
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GLOBL bad_proc_msg<>(SB), RODATA, $78
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GLOBL bad_cpu_msg<>(SB), RODATA, $84
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// Define a list of AMD64 microarchitecture level features
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// https://en.wikipedia.org/wiki/X86-64#Microarchitecture_levels
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@ -107,6 +107,10 @@ GLOBL bad_proc_msg<>(SB), RODATA, $78
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#define V3_EXT_FEATURES_BX (1 << 3 | 1 << 5 | 1 << 8)
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// XMM YMM
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#define V3_OS_SUPPORT_AX (1 << 1 | 1 << 2)
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#define V4_FEATURES_CX V3_FEATURES_CX
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#define V4_EXT_FEATURES_CX V3_EXT_FEATURES_CX
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// AVX512F AVX512DQ AVX512CD AVX512BW AVX512VL
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#define V4_EXT_FEATURES_BX (V3_EXT_FEATURES_BX | 1 << 16 | 1 << 17 | 1 << 28 | 1 << 30 | 1 << 31)
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// OPMASK ZMM
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@ -119,17 +123,6 @@ GLOBL bad_proc_msg<>(SB), RODATA, $78
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#endif
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#ifdef GOAMD64_v3
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#define NEED_V3_CHECK
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#endif
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// Excluding v4 checks on Darwin for now, see CL 285572.
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#ifdef GOAMD64_v4
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#ifdef GOOS_darwin
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#define NEED_V3_CHECK
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#endif
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#endif
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#ifdef NEED_V3_CHECK
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#define NEED_MAX_CPUID 0x80000001
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#define NEED_FEATURES_CX V3_FEATURES_CX
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#define NEED_EXT_FEATURES_CX V3_EXT_FEATURES_CX
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@ -138,13 +131,18 @@ GLOBL bad_proc_msg<>(SB), RODATA, $78
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#endif
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#ifdef GOAMD64_v4
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#ifndef GOOS_darwin
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#define NEED_MAX_CPUID 0x80000001
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#define NEED_FEATURES_CX V3_FEATURES_CX
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#define NEED_EXT_FEATURES_CX V3_EXT_FEATURES_CX
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#define NEED_FEATURES_CX V4_FEATURES_CX
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#define NEED_EXT_FEATURES_CX V4_EXT_FEATURES_CX
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#define NEED_EXT_FEATURES_BX V4_EXT_FEATURES_BX
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// Downgrading v4 OS checks on Darwin for now, see CL 285572.
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#ifdef GOOS_darwin
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#define NEED_OS_SUPPORT_AX V3_OS_SUPPORT_AX
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#else
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#define NEED_OS_SUPPORT_AX V4_OS_SUPPORT_AX
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#endif
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#endif
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#ifdef GOAMD64_v1
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@ -182,18 +180,17 @@ TEXT runtime·rt0_go(SB),NOSPLIT|TOPFRAME,$0
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// find out information about the processor we're on
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MOVL $0, AX
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CPUID
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MOVL AX, SI
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CMPL AX, $0
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#ifdef SKIP_GOAMD64_CHECK
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JE nocpuinfo
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JE nocpuinfo
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#else
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JNE has_cpuinfo
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bad_proc: // show that the program requires a certain microarchitecture level.
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bad_cpu: // show that the program requires a certain microarchitecture level.
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MOVQ $2, 0(SP)
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MOVQ $bad_proc_msg<>(SB), AX
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MOVQ $bad_cpu_msg<>(SB), AX
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MOVQ AX, 8(SP)
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MOVQ $78, 16(SP)
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MOVQ $84, 16(SP)
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CALL runtime·write(SB)
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MOVQ $1, 0(SP)
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CALL runtime·exit(SB)
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@ -218,14 +215,14 @@ notintel:
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#ifdef NEED_FEATURES_CX
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ANDL $NEED_FEATURES_CX, CX
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CMPL CX, $NEED_FEATURES_CX
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JNZ bad_proc
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JNE bad_cpu
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#endif
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#ifdef NEED_MAX_CPUID
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MOVL $0x80000000, AX
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CPUID
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CMPL AX, $NEED_MAX_CPUID
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JL bad_proc
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JL bad_cpu
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#endif
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#ifdef NEED_EXT_FEATURES_BX
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@ -234,7 +231,7 @@ notintel:
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CPUID
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ANDL $NEED_EXT_FEATURES_BX, BX
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CMPL BX, $NEED_EXT_FEATURES_BX
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JNZ bad_proc
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JNE bad_cpu
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#endif
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#ifdef NEED_EXT_FEATURES_CX
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@ -242,15 +239,15 @@ notintel:
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CPUID
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ANDL $NEED_EXT_FEATURES_CX, CX
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CMPL CX, $NEED_EXT_FEATURES_CX
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JNZ bad_proc
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JNE bad_cpu
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#endif
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#ifdef NEED_OS_SUPPORT_AX
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MOVL $0, CX
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XORL CX, CX
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XGETBV
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ANDL $NEED_OS_SUPPORT_AX, AX
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CMPL AX, $NEED_OS_SUPPORT_AX
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JNZ bad_proc
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JNE bad_cpu
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#endif
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nocpuinfo:
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