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Add one more address size modifier test.

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This commit is contained in:
Thomas Harte 2022-03-11 13:01:02 -05:00
parent 9b4048ec6e
commit dc1d1f132e
1 changed files with 13 additions and 27 deletions
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40
OSBindings/Mac/Clock SignalTests/x86DecoderTests.mm
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@ -662,36 +662,22 @@ decode(const std::initializer_list<uint8_t> &stream, bool set_32_bit = false) {
0x84, 0x43, 0x7f, 0x67, 0x15, 0xf6, 0x06, 0x2b, 0x6d
}, true);
// Lazy: just check that the right number of operations came out.
// Since the potential issue is reading the wrong size of address, that'll do.
XCTAssertEqual(instructions.size(), 22);
}
// addr16 repz pop ebp
// addr16 aas
// addr16 pop edx
// addr16 jmp 0xbceb:0xb38a217
// addr16 dec esp
// cmp bl,BYTE PTR [bx]
// add BYTE PTR
// addr16 mov cl,0x7c
// addr16 mov cl,dl
// addr16 xor ebp,ebp
// and al,BYTE PTR [bx+si]
// addr16 jns 0xffffffcf
// xchg DWORD PTR [si],edi
// addr16 aam 0xa2
// addr16 push edi
// add ah,BYTE PTR [bx+di]
// addr16 dec eax
// xor ebx,DWORD PTR
// addr16 cmp al,0xe1
// addr16 xchg ecx,eax
// sbb eax,DWORD PTR
// addr16 adc eax,0x6d2b06f6
- (void)testAddressSizeModifierSIB {
const auto instructions = decode<Model::i80386>({
// add dword ptr [bx + si + 256], eax
0x67, 0x01, 0x80, 0x00, 0x01,
// add [eax + 256], eax
0x01, 0x80, 0x00, 0x01, 0x00, 0x00
}, true);
XCTAssertEqual(instructions.size(), 2);
test(instructions[0], DataSize::DWord, Operation::ADD, Source::eAX, ScaleIndexBase(Source::eBX, Source::eSI), 0, 0x100);
test(instructions[1], DataSize::DWord, Operation::ADD, Source::eAX, ScaleIndexBase(Source::eAX), 0, 0x100);
}
@end