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Implement Thumb ADR instruction

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This commit is contained in:
MerryMage 2016-07-18 09:25:33 +01:00
parent 24aa24b1bc
commit 28a201da16
4 changed files with 18 additions and 4 deletions
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4
src/frontend/decoder/thumb16.h
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@ -56,7 +56,7 @@ private:
};
template <typename V>
const std::array<Thumb16Matcher<V>, 43> g_thumb16_instruction_table = {
const std::array<Thumb16Matcher<V>, 44> g_thumb16_instruction_table = {
#define INST(fn, name, bitstring) detail::detail<Thumb16Matcher, u16, 16>::GetMatcher<decltype(fn), fn>(name, bitstring)
@ -113,7 +113,7 @@ const std::array<Thumb16Matcher<V>, 43> g_thumb16_instruction_table = {
//INST(&V::thumb16_LDR_sp, "LDR (SP)", "10011dddvvvvvvvv"),
// Generate relative address instruction
//INST(&V::thumb16_ADR, "ADR", "10100dddvvvvvvvv"),
INST(&V::thumb16_ADR, "ADR", "10100dddvvvvvvvv"),
//INST(&V::thumb16_ADD_sp, "ADD (relative to SP)", "10101dddvvvvvvvv"),
// Miscellaneous 16-bit instructions

5
src/frontend/disassembler/disassembler_thumb.cpp
View file

@ -244,6 +244,11 @@ public:
return Common::StringFromFormat("ldr %s, [%s, #%u]", RegStr(t), RegStr(n), imm32);
}
std::string thumb16_ADR(Reg d, Imm8 imm8) {
u32 imm32 = imm8 << 2;
return Common::StringFromFormat("adr %s, +#%u", RegStr(d), imm32);
}
std::string thumb16_SXTH(Reg m, Reg d) {
return Common::StringFromFormat("sxth %s, %s", RegStr(d), RegStr(m));
}

2
src/frontend/translate/translate_arm.cpp
View file

@ -9,7 +9,7 @@
#include "frontend/decoder/arm.h"
#include "frontend/ir/ir.h"
#include "frontend/ir/ir_emitter.h"
#include "translate.h"
#include "frontend/translate/translate.h"
namespace Dynarmic {
namespace Arm {

11
src/frontend/translate/translate_thumb.cpp
View file

@ -10,7 +10,7 @@
#include "frontend/arm_types.h"
#include "frontend/decoder/thumb16.h"
#include "frontend/ir/ir_emitter.h"
#include "translate.h"
#include "frontend/translate/translate.h"
namespace Dynarmic {
namespace Arm {
@ -440,6 +440,15 @@ struct ThumbTranslatorVisitor final {
return true;
}
bool thumb16_ADR(Reg d, Imm8 imm8) {
u32 imm32 = imm8 << 2;
// ADR <Rd>, <label>
// Rd cannot encode R15.
auto result = ir.Imm32(ir.AlignPC(4) + imm32);
ir.SetRegister(d, result);
return true;
}
bool thumb16_SXTH(Reg m, Reg d) {
// SXTH <Rd>, <Rm>
// Rd cannot encode R15.