A64: Implement REV, REV32, and REV16 (#126)
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5 changed files with 125 additions and 4 deletions
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@ -65,6 +65,7 @@ add_library(dynarmic
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frontend/A64/translate/impl/data_processing_conditional_select.cpp
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frontend/A64/translate/impl/data_processing_logical.cpp
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frontend/A64/translate/impl/data_processing_pcrel.cpp
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frontend/A64/translate/impl/data_processing_register.cpp
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frontend/A64/translate/impl/exception_generating.cpp
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frontend/A64/translate/impl/impl.cpp
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frontend/A64/translate/impl/impl.h
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@ -286,11 +286,11 @@ INST(UnallocatedEncoding, "", "10111
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// Data Processing - Register - 1 source
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//INST(RBIT_int, "RBIT", "z101101011000000000000nnnnnddddd")
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//INST(REV16_int, "REV16", "z101101011000000000001nnnnnddddd")
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//INST(REV, "REV", "z10110101100000000001-nnnnnddddd")
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INST(REV16_int, "REV16", "z101101011000000000001nnnnnddddd")
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INST(REV, "REV", "z10110101100000000001onnnnnddddd")
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//INST(CLZ_int, "CLZ", "z101101011000000000100nnnnnddddd")
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//INST(CLS_int, "CLS", "z101101011000000000101nnnnnddddd")
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//INST(REV32_int, "REV32", "1101101011000000000010nnnnnddddd")
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INST(REV32_int, "REV32", "1101101011000000000010nnnnnddddd")
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//INST(PACDA, "PACDA, PACDZA", "110110101100000100Z010nnnnnddddd")
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//INST(PACDB, "PACDB, PACDZB", "110110101100000100Z011nnnnnddddd")
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//INST(AUTDA, "AUTDA, AUTDZA", "110110101100000100Z110nnnnnddddd")
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64
src/frontend/A64/translate/impl/data_processing_register.cpp
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64
src/frontend/A64/translate/impl/data_processing_register.cpp
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@ -0,0 +1,64 @@
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/* This file is part of the dynarmic project.
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* Copyright (c) 2018 MerryMage
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* This software may be used and distributed according to the terms of the GNU
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* General Public License version 2 or any later version.
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*/
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#include "frontend/A64/translate/impl/impl.h"
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namespace Dynarmic {
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namespace A64 {
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bool TranslatorVisitor::REV(bool sf, bool opc_0, Reg Rn, Reg Rd)
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{
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if (!sf && opc_0) return UnallocatedEncoding();
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size_t datasize = sf ? 64 : 32;
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IR::U32U64 operand = X(datasize, Rn);
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IR::U32U64 result;
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if (sf) {
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result = ir.ByteReverseDual(operand);
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} else {
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result = ir.ByteReverseWord(operand);
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}
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X(datasize, Rd, result);
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return true;
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}
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bool TranslatorVisitor::REV32_int(Reg Rn, Reg Rd)
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{
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IR::U64 operand = ir.GetX(Rn);
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IR::U32 lo = ir.ByteReverseWord(ir.LeastSignificantWord(operand));
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IR::U32 hi = ir.ByteReverseWord(ir.MostSignificantWord(operand).result);
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IR::U64 result = ir.Pack2x32To1x64(lo, hi);
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X(64, Rd, result);
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return true;
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}
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bool TranslatorVisitor::REV16_int(bool sf, Reg Rn, Reg Rd)
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{
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size_t datasize = sf ? 64 : 32;
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IR::U32U64 operand = X(datasize, Rn);
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IR::U32U64 result;
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IR::U32U64 hihalf;
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IR::U32U64 lohalf;
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if (sf) {
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hihalf = ir.And(ir.LogicalShiftRight(IR::U64(operand), ir.Imm8(8)), ir.Imm64(0x00FF00FF00FF00FF));
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lohalf = ir.And(ir.LogicalShiftLeft(IR::U64(operand), ir.Imm8(8)), ir.Imm64(0xFF00FF00FF00FF00));
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} else {
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hihalf = ir.And(ir.LogicalShiftRight(operand, ir.Imm8(8), ir.Imm1(0)).result, ir.Imm32(0x00FF00FF));
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lohalf = ir.And(ir.LogicalShiftLeft(operand, ir.Imm8(8), ir.Imm1(0)).result, ir.Imm32(0xFF00FF00));
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}
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result = ir.Or(hihalf, lohalf);
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X(datasize, Rd, result);
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return true;
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}
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} // namespace A64
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} // namespace Dynarmic
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@ -335,7 +335,7 @@ struct TranslatorVisitor final {
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// Data Processing - Register - 1 source
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bool RBIT_int(bool sf, Reg Rn, Reg Rd);
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bool REV16_int(bool sf, Reg Rn, Reg Rd);
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bool REV(bool sf, Reg Rn, Reg Rd);
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bool REV(bool sf, bool opc_0, Reg Rn, Reg Rd);
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bool CLZ_int(bool sf, Reg Rn, Reg Rd);
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bool CLS_int(bool sf, Reg Rn, Reg Rd);
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bool REV32_int(Reg Rn, Reg Rd);
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@ -29,6 +29,62 @@ TEST_CASE("A64: ADD", "[a64]") {
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REQUIRE(jit.GetPC() == 4);
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}
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TEST_CASE("A64: REV", "[a64]") {
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TestEnv env;
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Dynarmic::A64::Jit jit{Dynarmic::A64::UserConfig{&env}};
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env.code_mem[0] = 0xdac00c00; // REV X0, X0
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env.code_mem[1] = 0x5ac00821; // REV W1, W1
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env.code_mem[2] = 0x14000000; // B .
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jit.SetRegister(0, 0xaabbccddeeff1100);
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jit.SetRegister(1, 0xaabbccdd);
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jit.SetPC(0);
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env.ticks_left = 3;
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jit.Run();
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REQUIRE(jit.GetRegister(0) == 0x11ffeeddccbbaa);
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REQUIRE(jit.GetRegister(1) == 0xddccbbaa);
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REQUIRE(jit.GetPC() == 8);
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}
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TEST_CASE("A64: REV32", "[a64]") {
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TestEnv env;
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Dynarmic::A64::Jit jit{Dynarmic::A64::UserConfig{&env}};
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env.code_mem[0] = 0xdac00800; // REV32 X0, X0
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env.code_mem[1] = 0x14000000; // B .
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jit.SetRegister(0, 0xaabbccddeeff1100);
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jit.SetPC(0);
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env.ticks_left = 2;
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jit.Run();
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REQUIRE(jit.GetRegister(0) == 0xddccbbaa0011ffee);
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REQUIRE(jit.GetPC() == 4);
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}
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TEST_CASE("A64: REV16", "[a64]") {
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TestEnv env;
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Dynarmic::A64::Jit jit{Dynarmic::A64::UserConfig{&env}};
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env.code_mem[0] = 0xdac00400; // REV16 X0, X0
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env.code_mem[1] = 0x5ac00421; // REV16 W1, W1
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env.code_mem[2] = 0x14000000; // B .
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jit.SetRegister(0, 0xaabbccddeeff1100);
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jit.SetRegister(1, 0xaabbccdd);
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jit.SetPC(0);
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env.ticks_left = 3;
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jit.Run();
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REQUIRE(jit.GetRegister(0) == 0xbbaaddccffee0011);
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REQUIRE(jit.GetRegister(1) == 0xbbaaddcc);
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REQUIRE(jit.GetPC() == 8);
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}
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TEST_CASE("A64: AND", "[a64]") {
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TestEnv env;
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Dynarmic::A64::Jit jit{Dynarmic::A64::UserConfig{&env}};
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