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Fix Thumb BLX (imm), BL (imm) for negative immediates

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This commit is contained in:
MerryMage 2016-07-18 22:48:23 +01:00
parent 3f11a149d7
commit 95588d3faa
2 changed files with 18 additions and 2 deletions
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4
src/frontend/translate/translate_thumb.cpp
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@ -789,7 +789,7 @@ struct ThumbTranslatorVisitor final {
}
bool thumb32_BL_imm(Imm11 hi, Imm11 lo) {
s32 imm32 = Common::SignExtend<32, s32>((hi << 12) | (lo << 1));
s32 imm32 = Common::SignExtend<23, s32>((hi << 12) | (lo << 1));
// BL <label>
ir.SetRegister(Reg::LR, ir.Imm32((ir.current_location.arm_pc + 4) | 1));
auto new_location = ir.current_location;
@ -799,7 +799,7 @@ struct ThumbTranslatorVisitor final {
}
bool thumb32_BLX_imm(Imm11 hi, Imm11 lo) {
s32 imm32 = Common::SignExtend<32, s32>((hi << 12) | (lo << 1));
s32 imm32 = Common::SignExtend<23, s32>((hi << 12) | (lo << 1));
if ((lo & 1) != 0) {
return UnpredictableInstruction();
}