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https://github.com/FEX-Emu/FEX.git
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f1979c15a2
The instruction decode tables for crc32 introduced some dumb. `F2h` and `F2h && 66h` prefixes both work for crc32. This is a failure on Intel's part for sticking crc32 in to the vector table. MOVBE without any prefixes also does the same garbage where prefix `66h` acts as an operand prefix size ONLY.
104 lines
3.0 KiB
NASM
104 lines
3.0 KiB
NASM
%ifdef CONFIG
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{
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"RegData": {
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"RAX": "0x00000000C5727F5A",
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"RBX": "0x00000000FAC690D7",
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"RCX": "0x000000002AAF1F77",
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"RDX": "0x00000000ADBE9F64",
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"RSI": "0x00000000ADBE9F64",
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"RDI": "0x00000000ADBE9F64"
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}
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}
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%endif
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; This is a clone of the F2_F1 crc32 test with manually coded crc32 with prefix 66 instead of F2
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; This can't user operand size override on 32-bit instructions for testing since it WILL override to 16-bit
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mov rax, 0
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mov rbx, 0
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mov rcx, 0
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mov rdx, 0
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mov rsi, 0
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mov rdi, 0
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mov rbp, 0
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lea rsp, [rel .data]
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; crc32 eax, word [rel .data]
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db 0x66 ; Operand size override
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db 0xf2 ; Prefix
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db 0x0f, 0x38, 0xf1, 0x05
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dd 0x0000006c
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; crc32 ebx, dword [rel .data + 2]
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db 0xf2 ; Prefix
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db 0x0f, 0x38, 0xf1, 0x1d,
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dd 0x00000065
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; crc32 rcx, qword [rel .data + 8]
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db 0x66 ; Operand size override
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db 0xf2 ; Prefix
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db 0x48, 0x0f, 0x38, 0xf1, 0x0d,
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dd 0x00000060
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mov rbp, 0
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.again16:
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cmp rbp, 128
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je .done16
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; crc32 edx, word [rsp + rbp * 2]
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db 0x66 ; Operand size override
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db 0xf2 ; Prefix
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db 0x0f, 0x38, 0xf1, 0x14, 0x6c
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add rbp, 1
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jmp .again16
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.done16:
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mov rbp, 0
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.again32:
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cmp rbp, 64
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je .done32
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; crc32 esi, dword [rsp + rbp * 4]
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db 0xf2 ; Prefix
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db 0x0f, 0x38, 0xf1, 0x34, 0xac
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add rbp, 1
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jmp .again32
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.done32:
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mov rbp, 0
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.again64:
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cmp rbp, 32
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je .done64
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; crc32 rdi, qword [rsp + rbp * 8]
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db 0x66 ; Operand size override
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db 0xf2 ; Prefix
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db 0x48, 0x0f, 0x38, 0xf1, 0x3c, 0xec
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add rbp, 1
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jmp .again64
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.done64:
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hlt
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align 16
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; 256bytes of random data
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.data:
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db 0xe0, 0xfc, 0x2b, 0xa1, 0x06, 0x4f, 0x6c, 0xa7, 0x0f, 0x06, 0x6a, 0x1e, 0x7f, 0x76, 0x80, 0x9b
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db 0xe0, 0x56, 0xed, 0xaa, 0xf3, 0xc3, 0x68, 0x68, 0xde, 0xe6, 0xe6, 0x94, 0xe2, 0xe9, 0xfc, 0xf0
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db 0x6e, 0x35, 0xa8, 0x54, 0xd7, 0xab, 0x8b, 0x6c, 0x77, 0x5f, 0x92, 0xca, 0x25, 0xa6, 0x7e, 0x27
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db 0xc7, 0xcd, 0x73, 0xec, 0x95, 0xd6, 0x6f, 0x6a, 0xbb, 0xae, 0xf2, 0xbb, 0x27, 0xb9, 0xa1, 0xdd
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db 0x73, 0x4d, 0xd1, 0xc7, 0xd5, 0x2c, 0x31, 0x88, 0xfe, 0xe7, 0xdb, 0xfd, 0x1e, 0x1e, 0x09, 0x7f
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db 0x14, 0xfa, 0x4e, 0x95, 0xef, 0xe6, 0x9a, 0xf2, 0xa0, 0x42, 0x62, 0x9a, 0xa4, 0xa8, 0x73, 0x82
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db 0x0e, 0x0f, 0x16, 0x82, 0x38, 0x07, 0x12, 0x32, 0x07, 0x35, 0x92, 0xc1, 0x63, 0x07, 0x78, 0xb3
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db 0xcb, 0x46, 0x19, 0x57, 0x2b, 0x37, 0x2a, 0x46, 0x1f, 0x04, 0x0e, 0x79, 0x3d, 0xcd, 0x8d, 0xa3
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db 0x2b, 0xf3, 0x86, 0x2f, 0xab, 0xba, 0x57, 0x30, 0x2e, 0xd6, 0x2c, 0xf0, 0x46, 0x4f, 0x3f, 0xef
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db 0xef, 0xd1, 0xbb, 0x85, 0x34, 0x4b, 0x3c, 0xde, 0x9e, 0x48, 0xa3, 0xb9, 0x8d, 0x71, 0xe3, 0x9d
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db 0x09, 0x72, 0xfb, 0xde, 0x8a, 0x32, 0x50, 0x9d, 0x69, 0x98, 0xf1, 0xf6, 0x52, 0xeb, 0xf7, 0xee
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db 0xd6, 0x99, 0xc2, 0xff, 0x30, 0x1c, 0x02, 0xce, 0x70, 0x05, 0xb2, 0xf1, 0x56, 0x9c, 0x0e, 0xa6
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db 0x18, 0x62, 0xc4, 0xe2, 0x86, 0x38, 0x76, 0x30, 0x2f, 0xa1, 0xe4, 0xa7, 0x0e, 0x5d, 0x53, 0xeb
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db 0x14, 0x45, 0xe0, 0xb7, 0xe1, 0xe8, 0x02, 0x68, 0x1a, 0xfe, 0x8e, 0xc1, 0x8f, 0xf2, 0xeb, 0x46
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db 0x7f, 0x5d, 0x6a, 0x23, 0x46, 0x97, 0x2e, 0x03, 0x98, 0x12, 0x32, 0x8f, 0x54, 0x76, 0x59, 0xac
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db 0xc8, 0x76, 0x5f, 0xc8, 0x71, 0x0c, 0xd3, 0xb6, 0xc5, 0x19, 0xea, 0xab, 0xa6, 0x2c, 0x1d, 0x88
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