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Implement Thumb instructions: BX, BLX (reg), B (T1), B (T2)

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This commit is contained in:
MerryMage
2016-07-18 21:04:39 +01:00
parent 2363759c62
commit e0d6e28b67
6 changed files with 217 additions and 142 deletions
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17
src/frontend/disassembler/disassembler_thumb.cpp
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@@ -380,6 +380,13 @@ public:
return Common::StringFromFormat("ldm %s%s, %s", RegStr(n), write_back ? "!" : "", RegListStr(reg_list).c_str());
}
std::string thumb16_BX(Reg m) {
return Common::StringFromFormat("bx %s", RegStr(m));
}
std::string thumb16_BLX_reg(Reg m) {
return Common::StringFromFormat("blx %s", RegStr(m));
}
std::string thumb16_UDF() {
return Common::StringFromFormat("udf");
@@ -388,6 +395,16 @@ public:
std::string thumb16_SVC(Imm8 imm8) {
return Common::StringFromFormat("svc #%u", imm8);
}
std::string thumb16_B_t1(Cond cond, Imm8 imm8) {
s32 imm32 = Common::SignExtend<9, s32>(imm8 << 1) + 4;
return Common::StringFromFormat("b%s %s#%u", CondStr(cond), SignStr(imm32), abs(imm32));
}
std::string thumb16_B_t2(Imm11 imm11) {
s32 imm32 = Common::SignExtend<12, s32>(imm11 << 1) + 4;
return Common::StringFromFormat("b %s#%u", SignStr(imm32), abs(imm32));
}
};
std::string DisassembleThumb16(u16 instruction) {