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Merge pull request #576 from lioncash/pbi

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thumb32: Implement MOVT/MOVW
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merry 2021-02-19 22:48:43 +00:00 committed by GitHub
commit 4b43dd33c6
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4 changed files with 41 additions and 2 deletions
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1
src/CMakeLists.txt
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@ -157,6 +157,7 @@ if ("A32" IN_LIST DYNARMIC_FRONTENDS)
frontend/A32/translate/impl/thumb32_control.cpp
frontend/A32/translate/impl/thumb32_data_processing_register.cpp
frontend/A32/translate/impl/thumb32_data_processing_modified_immediate.cpp
frontend/A32/translate/impl/thumb32_data_processing_plain_binary_immediate.cpp
frontend/A32/translate/impl/thumb32_long_multiply.cpp
frontend/A32/translate/impl/thumb32_misc.cpp
frontend/A32/translate/impl/thumb32_multiply.cpp

4
src/frontend/A32/decoder/thumb32.inc
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@ -73,10 +73,10 @@ INST(thumb32_EOR_imm, "EOR (imm)", "11110v00100Snnnn0vvvdd
// Data Processing (Plain Binary Immediate)
//INST(thumb32_ADR, "ADR", "11110-10000011110---------------")
//INST(thumb32_ADD_imm_2, "ADD (imm)", "11110-100000----0---------------")
//INST(thumb32_MOVW_imm, "MOVW (imm)", "11110-100100----0---------------")
INST(thumb32_MOVW_imm, "MOVW (imm)", "11110i100100iiii0iiiddddiiiiiiii")
//INST(thumb32_ADR, "ADR", "11110-10101011110---------------")
//INST(thumb32_SUB_imm_2, "SUB (imm)", "11110-101010----0---------------")
//INST(thumb32_MOVT, "MOVT", "11110-101100----0---------------")
INST(thumb32_MOVT, "MOVT", "11110i101100iiii0iiiddddiiiiiiii")
//INST(thumb32_SSAT, "SSAT", "11110-110000----0---------------")
//INST(thumb32_SSAT16, "SSAT16", "11110-110010----0000----00------")
//INST(thumb32_SSAT, "SSAT", "11110-110010----0---------------")

34
src/frontend/A32/translate/impl/thumb32_data_processing_plain_binary_immediate.cpp Normal file
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@ -0,0 +1,34 @@
/* This file is part of the dynarmic project.
* Copyright (c) 2021 MerryMage
* SPDX-License-Identifier: 0BSD
*/
#include "frontend/A32/translate/impl/translate_thumb.h"
namespace Dynarmic::A32 {
bool ThumbTranslatorVisitor::thumb32_MOVT(Imm<1> imm1, Imm<4> imm4, Imm<3> imm3, Reg d, Imm<8> imm8) {
if (d == Reg::PC) {
return UnpredictableInstruction();
}
const IR::U32 imm16 = ir.Imm32(concatenate(imm4, imm1, imm3, imm8).ZeroExtend() << 16);
const IR::U32 operand = ir.GetRegister(d);
const IR::U32 result = ir.Or(ir.And(operand, ir.Imm32(0x0000FFFFU)), imm16);
ir.SetRegister(d, result);
return true;
}
bool ThumbTranslatorVisitor::thumb32_MOVW_imm(Imm<1> imm1, Imm<4> imm4, Imm<3> imm3, Reg d, Imm<8> imm8) {
if (d == Reg::PC) {
return UnpredictableInstruction();
}
const IR::U32 imm = ir.Imm32(concatenate(imm4, imm1, imm3, imm8).ZeroExtend());
ir.SetRegister(d, imm);
return true;
}
} // namespace Dynarmic::A32

4
src/frontend/A32/translate/impl/translate_thumb.h
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@ -159,6 +159,10 @@ struct ThumbTranslatorVisitor final {
bool thumb32_TEQ_imm(Imm<1> i, Reg n, Imm<3> imm3, Imm<8> imm8);
bool thumb32_EOR_imm(Imm<1> i, bool S, Reg n, Imm<3> imm3, Reg d, Imm<8> imm8);
// thumb32 data processing (plain binary immediate) instructions.
bool thumb32_MOVT(Imm<1> imm1, Imm<4> imm4, Imm<3> imm3, Reg d, Imm<8> imm8);
bool thumb32_MOVW_imm(Imm<1> imm1, Imm<4> imm4, Imm<3> imm3, Reg d, Imm<8> imm8);
// thumb32 miscellaneous control instructions
bool thumb32_UDF();