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42 lines
630 B
NASM
42 lines
630 B
NASM
%ifdef CONFIG
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{
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"RegData": {
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"RAX": "0x1600",
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"RDI": "0xE0000004",
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"RSI": "0xDFFFFFFC"
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},
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"MemoryRegions": {
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"0x100000000": "4096"
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}
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}
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%endif
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mov rdx, 0xe0000000
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mov rax, 0x61626364
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mov [rdx + 8 * 0], rax
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mov rax, 0x55565758
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mov [rdx + 8 * 1], rax
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lea rdi, [rdx + 8 * 1]
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lea rsi, [rdx + 8 * 0]
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std
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cmpsd ; rdi cmp rsi
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; cmp = 0x55565758 - 0x61626364 = 0xF3F3F3F4
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; 0: CF - 00000001
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; 1: - 00000010
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; 2: PF - 00000000
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; 3: 0 - 00000000
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; 4: AF - 00000000
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; 5: 0 - 00000000
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; 6: ZF - 00000000
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; 7: SF - 10000000
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; ================
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; 10000011
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; OF: LAHF doesn't load - 0
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mov rax, 0
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lahf
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hlt
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