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Merge pull request #572 from lioncash/multiply

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thumb32: Implement MLA/MLS/MUL/USAD8/USADA8
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merry 2021-02-07 10:15:57 +00:00 committed by GitHub
commit 51fa6a725a
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4 changed files with 92 additions and 5 deletions
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1
src/CMakeLists.txt
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@ -152,6 +152,7 @@ if ("A32" IN_LIST DYNARMIC_FRONTENDS)
frontend/A32/translate/impl/thumb16.cpp
frontend/A32/translate/impl/thumb32.cpp
frontend/A32/translate/impl/thumb32_misc.cpp
frontend/A32/translate/impl/thumb32_multiply.cpp
frontend/A32/translate/impl/thumb32_parallel.cpp
frontend/A32/translate/impl/translate_arm.h
frontend/A32/translate/impl/translate_thumb.h

10
src/frontend/A32/decoder/thumb32.inc
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@ -261,9 +261,9 @@ INST(thumb32_SEL, "SEL", "111110101010nnnn1111dd
INST(thumb32_CLZ, "CLZ", "111110101011nnnn1111dddd1000mmmm")
// Multiply, Multiply Accumulate, and Absolute Difference
//INST(thumb32_MUL, "MUL", "111110110000----1111----0000----")
//INST(thumb32_MLA, "MLA", "111110110000------------0000----")
//INST(thumb32_MLS, "MLS", "111110110000------------0001----")
INST(thumb32_MUL, "MUL", "111110110000nnnn1111dddd0000mmmm")
INST(thumb32_MLA, "MLA", "111110110000nnnnaaaadddd0000mmmm")
INST(thumb32_MLS, "MLS", "111110110000nnnnaaaadddd0001mmmm")
//INST(thumb32_SMULXY, "SMULXY", "111110110001----1111----00------")
//INST(thumb32_SMLAXY, "SMLAXY", "111110110001------------00------")
//INST(thumb32_SMUAD, "SMUAD", "111110110010----1111----000-----")
@ -275,8 +275,8 @@ INST(thumb32_CLZ, "CLZ", "111110101011nnnn1111dd
//INST(thumb32_SMMUL, "SMMUL", "111110110101----1111----000-----")
//INST(thumb32_SMMLA, "SMMLA", "111110110101------------000-----")
//INST(thumb32_SMMLS, "SMMLS", "111110110110------------000-----")
//INST(thumb32_USAD8, "USAD8", "111110110111----1111----0000----")
//INST(thumb32_USADA8, "USADA8", "111110110111------------0000----")
INST(thumb32_USAD8, "USAD8", "111110110111nnnn1111dddd0000mmmm")
INST(thumb32_USADA8, "USADA8", "111110110111nnnnaaaadddd0000mmmm")
// Long Multiply, Long Multiply Accumulate, and Divide
//INST(thumb32_SMULL, "SMULL", "111110111000------------0000----")

79
src/frontend/A32/translate/impl/thumb32_multiply.cpp Normal file
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@ -0,0 +1,79 @@
/* 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_MLA(Reg n, Reg a, Reg d, Reg m) {
if (d == Reg::PC || n == Reg::PC || m == Reg::PC) {
return UnpredictableInstruction();
}
const auto reg_a = ir.GetRegister(a);
const auto reg_m = ir.GetRegister(m);
const auto reg_n = ir.GetRegister(n);
const auto result = ir.Add(ir.Mul(reg_n, reg_m), reg_a);
ir.SetRegister(d, result);
return true;
}
bool ThumbTranslatorVisitor::thumb32_MLS(Reg n, Reg a, Reg d, Reg m) {
if (d == Reg::PC || n == Reg::PC || m == Reg::PC) {
return UnpredictableInstruction();
}
const auto reg_a = ir.GetRegister(a);
const auto reg_m = ir.GetRegister(m);
const auto reg_n = ir.GetRegister(n);
const auto result = ir.Sub(reg_a, ir.Mul(reg_n, reg_m));
ir.SetRegister(d, result);
return true;
}
bool ThumbTranslatorVisitor::thumb32_MUL(Reg n, Reg d, Reg m) {
if (d == Reg::PC || n == Reg::PC || m == Reg::PC) {
return UnpredictableInstruction();
}
const auto reg_m = ir.GetRegister(m);
const auto reg_n = ir.GetRegister(n);
const auto result = ir.Mul(reg_n, reg_m);
ir.SetRegister(d, result);
return true;
}
bool ThumbTranslatorVisitor::thumb32_USAD8(Reg n, Reg d, Reg m) {
if (d == Reg::PC || n == Reg::PC || m == Reg::PC) {
return UnpredictableInstruction();
}
const auto reg_m = ir.GetRegister(m);
const auto reg_n = ir.GetRegister(n);
const auto result = ir.PackedAbsDiffSumS8(reg_n, reg_m);
ir.SetRegister(d, result);
return true;
}
bool ThumbTranslatorVisitor::thumb32_USADA8(Reg n, Reg a, Reg d, Reg m) {
if (d == Reg::PC || n == Reg::PC || m == Reg::PC) {
return UnpredictableInstruction();
}
const auto reg_a = ir.GetRegister(a);
const auto reg_m = ir.GetRegister(m);
const auto reg_n = ir.GetRegister(n);
const auto tmp = ir.PackedAbsDiffSumS8(reg_n, reg_m);
const auto result = ir.AddWithCarry(reg_a, tmp, ir.Imm1(0));
ir.SetRegister(d, result.result);
return true;
}
} // namespace Dynarmic::A32

7
src/frontend/A32/translate/impl/translate_thumb.h
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@ -128,6 +128,13 @@ struct ThumbTranslatorVisitor final {
bool thumb32_REVSH(Reg n, Reg d, Reg m);
bool thumb32_SEL(Reg n, Reg d, Reg m);
// thumb32 multiply instructions
bool thumb32_MLA(Reg n, Reg a, Reg d, Reg m);
bool thumb32_MLS(Reg n, Reg a, Reg d, Reg m);
bool thumb32_MUL(Reg n, Reg d, Reg m);
bool thumb32_USAD8(Reg n, Reg d, Reg m);
bool thumb32_USADA8(Reg n, Reg a, Reg d, Reg m);
// thumb32 parallel add/sub instructions
bool thumb32_SADD8(Reg n, Reg d, Reg m);
bool thumb32_SADD16(Reg n, Reg d, Reg m);