SwitchEmu/dynarmic
1
0
Fork 0
mirror of https://git.suyu.dev/suyu/dynarmic.git synced 2026-03-10 20:26:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

Implement thumb STM, LDM. Fix thumb POP implementation for P=1.

Browse Source
This commit is contained in:
MerryMage
2016-07-18 20:05:35 +01:00
parent 8a310777a1
commit 2363759c62
4 changed files with 78 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
src/frontend/translate/translate_thumb.cpp
View File

@@ -661,9 +661,18 @@ struct ThumbTranslatorVisitor final {
address = ir.Add(address, ir.Imm32(4));
}
}
ir.SetRegister(Reg::SP, address);
// TODO(optimization): Possible location for an RSB push.
return true;
if (Common::Bit<15>(reg_list)) {
// TODO(optimization): Possible location for an RSB pop.
auto data = ir.ReadMemory32(address);
ir.LoadWritePC(data);
address = ir.Add(address, ir.Imm32(4));
ir.SetRegister(Reg::SP, address);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
} else {
ir.SetRegister(Reg::SP, address);
return true;
}
}
bool thumb16_REV(Reg m, Reg d) {
@@ -696,6 +705,37 @@ struct ThumbTranslatorVisitor final {
return true;
}
bool thumb16_STMIA(Reg n, RegList reg_list) {
// STM <Rn>!, <reg_list>
auto address = ir.GetRegister(n);
for (size_t i = 0; i < 8; i++) {
if (Common::Bit(i, reg_list)) {
auto Ri = ir.GetRegister(static_cast<Reg>(i));
ir.WriteMemory32(address, Ri);
address = ir.Add(address, ir.Imm32(4));
}
}
ir.SetRegister(n, address);
return true;
}
bool thumb16_LDMIA(Reg n, RegList reg_list) {
bool write_back = !Dynarmic::Common::Bit(static_cast<size_t>(n), reg_list);
// STM <Rn>!, <reg_list>
auto address = ir.GetRegister(n);
for (size_t i = 0; i < 8; i++) {
if (Common::Bit(i, reg_list)) {
auto data = ir.ReadMemory32(address);
ir.SetRegister(static_cast<Reg>(i), data);
address = ir.Add(address, ir.Imm32(4));
}
}
if (write_back) {
ir.SetRegister(n, address);
}
return true;
}
bool thumb16_UDF() {
return InterpretThisInstruction();
}