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Jit64: Dynamic length of regular jump instruction (for known addresses)

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Conditional jumps already do that, so let's be consistent.
This commit is contained in:
Martino Fontana
2025-10-08 00:15:57 +02:00
parent 70bd0943a7
commit f6e5448b43
9 changed files with 55 additions and 40 deletions
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Source/UnitTests/Common/x64EmitterTest.cpp
+6 -4
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@@ -298,12 +298,14 @@ TEST_F(x64EmitterTest, POP_Register)
TEST_F(x64EmitterTest, JMP)
{
emitter->NOP(1);
emitter->JMP(code_buffer, XEmitter::Jump::Short);
emitter->JMP(code_buffer);
ExpectBytes({/* nop */ 0x90, /* short jmp */ 0xeb, /* offset -3 */ 0xfd});
emitter->NOP(1);
emitter->JMP(code_buffer, XEmitter::Jump::Near);
ExpectBytes({/* nop */ 0x90, /* near jmp */ 0xe9, /* offset -6 */ 0xfa, 0xff, 0xff, 0xff});
emitter->NOP(0x90);
const u8* after_nops = emitter->GetCodePtr();
ResetCodeBuffer();
emitter->JMP(after_nops);
ExpectBytes({/* near jmp */ 0xe9, /* offset */ 0x8B, 0, 0, 0});
}
TEST_F(x64EmitterTest, JMPptr_Register)