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A64: Implement MOVN, MOVZ, MOVK

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This commit is contained in:
MerryMage 2018-01-15 21:47:28 +00:00
parent cc6071d667
commit cdbc8d07a5
4 changed files with 63 additions and 5 deletions
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1
src/CMakeLists.txt
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@ -69,6 +69,7 @@ add_library(dynarmic
frontend/A64/translate/impl/load_store_load_literal.cpp
frontend/A64/translate/impl/load_store_register_immediate.cpp
frontend/A64/translate/impl/load_store_register_pair.cpp
frontend/A64/translate/impl/move_wide.cpp
frontend/A64/translate/translate.cpp
frontend/A64/translate/translate.h
frontend/A64/types.cpp

4
src/backend_x64/a64_emit_x64.cpp
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@ -166,8 +166,8 @@ void A64EmitX64::EmitA64SetW(A64EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
A64::Reg reg = inst->GetArg(0).GetA64RegRef();
auto addr = qword[r15 + offsetof(A64JitState, reg) + sizeof(u64) * static_cast<size_t>(reg)];
if (args[1].IsImmediate()) {
code->mov(addr, args[1].GetImmediateU32());
if (args[1].FitsInImmediateS32()) {
code->mov(addr, args[1].GetImmediateS32());
} else {
// TODO: zext tracking, xmm variant
Xbyak::Reg64 to_store = ctx.reg_alloc.UseScratchGpr(args[1]);

6
src/frontend/A64/decoder/a64.inc
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@ -15,9 +15,9 @@ INST(EOR_imm, "EOR (immediate)", "z1010
INST(ANDS_imm, "ANDS (immediate)", "z11100100Nrrrrrrssssssnnnnnddddd")
// Data processing - Immediate - Move Wide
//INST(MOVN, "MOVN", "z00100101ssiiiiiiiiiiiiiiiiddddd")
//INST(MOVZ, "MOVZ", "z10100101ssiiiiiiiiiiiiiiiiddddd")
//INST(MOVK, "MOVK", "z11100101ssiiiiiiiiiiiiiiiiddddd")
INST(MOVN, "MOVN", "z00100101ssiiiiiiiiiiiiiiiiddddd")
INST(MOVZ, "MOVZ", "z10100101ssiiiiiiiiiiiiiiiiddddd")
INST(MOVK, "MOVK", "z11100101ssiiiiiiiiiiiiiiiiddddd")
// Data processing - Immediate - Bitfield
//INST(SBFM, "SBFM", "z00100110Nrrrrrrssssssnnnnnddddd")

57
src/frontend/A64/translate/impl/move_wide.cpp Normal file
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@ -0,0 +1,57 @@
/* This file is part of the dynarmic project.
* Copyright (c) 2018 MerryMage
* This software may be used and distributed according to the terms of the GNU
* General Public License version 2 or any later version.
*/
#include "frontend/A64/translate/impl/impl.h"
namespace Dynarmic {
namespace A64 {
bool TranslatorVisitor::MOVN(bool sf, Imm<2> hw, Imm<16> imm16, Reg Rd) {
size_t datasize = sf ? 64 : 32;
if (!sf && hw.Bit<1>()) return UnallocatedEncoding();
size_t pos = hw.ZeroExtend<size_t>() << 4;
u64 value = imm16.ZeroExtend<u64>() << pos;
value = ~value;
auto result = I(datasize, value);
X(datasize, Rd, result);
return true;
}
bool TranslatorVisitor::MOVZ(bool sf, Imm<2> hw, Imm<16> imm16, Reg Rd) {
size_t datasize = sf ? 64 : 32;
if (!sf && hw.Bit<1>()) return UnallocatedEncoding();
size_t pos = hw.ZeroExtend<size_t>() << 4;
u64 value = imm16.ZeroExtend<u64>() << pos;
auto result = I(datasize, value);
X(datasize, Rd, result);
return true;
}
bool TranslatorVisitor::MOVK(bool sf, Imm<2> hw, Imm<16> imm16, Reg Rd) {
size_t datasize = sf ? 64 : 32;
if (!sf && hw.Bit<1>()) return UnallocatedEncoding();
size_t pos = hw.ZeroExtend<size_t>() << 4;
auto result = X(datasize, Rd);
u64 mask = u64(0xFFFF) << pos;
u64 value = imm16.ZeroExtend<u64>() << pos;
result = ir.And(result, I(datasize, ~mask));
result = ir.Or(result, I(datasize, value));
X(datasize, Rd, result);
return true;
}
} // namespace A64
} // namespace Dynarmic