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Implement thumb1_LDR_literal, thumb1_LDR_imm_t1

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This commit is contained in:
MerryMage
2016-07-11 22:43:53 +01:00
parent cbcf61a9e6
commit e7922e4fef
11 changed files with 215 additions and 5 deletions
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51
src/frontend/ir_emitter.cpp
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@@ -14,6 +14,16 @@ void IREmitter::Unimplemented() {
}
u32 IREmitter::PC() {
u32 offset = current_location.TFlag ? 4 : 8;
return current_location.arm_pc + offset;
}
u32 IREmitter::AlignPC(size_t alignment) {
u32 pc = PC();
return static_cast<u32>(pc - pc % alignment);
}
IR::ValuePtr IREmitter::Imm1(bool value) {
auto imm1 = std::make_shared<IR::ImmU1>(value);
AddToBlock(imm1);
@@ -34,13 +44,13 @@ IR::ValuePtr IREmitter::Imm32(u32 i) {
IR::ValuePtr IREmitter::GetRegister(Reg reg) {
if (reg == Reg::PC) {
u32 offset = current_location.TFlag ? 4 : 8;
return Imm32(current_location.arm_pc + offset);
return Imm32(PC());
}
return Inst(IR::Opcode::GetRegister, { RegRef(reg) });
}
void IREmitter::SetRegister(const Reg reg, IR::ValuePtr value) {
ASSERT(reg != Reg::PC);
Inst(IR::Opcode::SetRegister, { RegRef(reg), value });
}
@@ -112,6 +122,10 @@ IREmitter::ResultAndCarryAndOverflow IREmitter::AddWithCarry(IR::ValuePtr a, IR:
return {result, carry_out, overflow};
}
IR::ValuePtr IREmitter::Add(IR::ValuePtr a, IR::ValuePtr b) {
return Inst(IR::Opcode::AddWithCarry, {a, b, Imm1(0)});
}
IREmitter::ResultAndCarryAndOverflow IREmitter::SubWithCarry(IR::ValuePtr a, IR::ValuePtr b, IR::ValuePtr carry_in) {
// This is equivalent to AddWithCarry(a, Not(b), carry_in).
auto result = Inst(IR::Opcode::SubWithCarry, {a, b, carry_in});
@@ -136,6 +150,39 @@ IR::ValuePtr IREmitter::Not(IR::ValuePtr a) {
return Inst(IR::Opcode::Not, {a});
}
IR::ValuePtr IREmitter::ReadMemory8(IR::ValuePtr vaddr) {
return Inst(IR::Opcode::ReadMemory8, {vaddr});
}
IR::ValuePtr IREmitter::ReadMemory16(IR::ValuePtr vaddr) {
return Inst(IR::Opcode::ReadMemory16, {vaddr});
}
IR::ValuePtr IREmitter::ReadMemory32(IR::ValuePtr vaddr) {
return Inst(IR::Opcode::ReadMemory32, {vaddr});
}
IR::ValuePtr IREmitter::ReadMemory64(IR::ValuePtr vaddr) {
return Inst(IR::Opcode::ReadMemory64, {vaddr});
}
void IREmitter::WriteMemory8(IR::ValuePtr vaddr, IR::ValuePtr value) {
Inst(IR::Opcode::WriteMemory8, {vaddr, value});
}
void IREmitter::WriteMemory16(IR::ValuePtr vaddr, IR::ValuePtr value) {
Inst(IR::Opcode::WriteMemory16, {vaddr, value});
}
void IREmitter::WriteMemory32(IR::ValuePtr vaddr, IR::ValuePtr value) {
Inst(IR::Opcode::WriteMemory32, {vaddr, value});
}
void IREmitter::WriteMemory64(IR::ValuePtr vaddr, IR::ValuePtr value) {
Inst(IR::Opcode::WriteMemory64, {vaddr, value});
}
void IREmitter::SetTerm(const IR::Terminal& terminal) {
ASSERT_MSG(block.terminal.which() == 0, "Terminal has already been set.");
block.terminal = terminal;