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jit: LDM/STM finally(!) working + MUL, MLA and CLZ

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This commit is contained in:
RSDuck
2019-07-12 03:43:45 +02:00
parent c58fdbd66b
commit 2efab201e9
6 changed files with 279 additions and 47 deletions
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74
src/ARMJIT_x64/ARMJIT_ALU.cpp
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@ -223,6 +223,73 @@ void Compiler::A_Comp_MovOp()
Comp_JumpTo(rd.GetSimpleReg(), S);
}
void Compiler::A_Comp_CLZ()
{
OpArg rd = MapReg(CurInstr.A_Reg(12));
OpArg rm = MapReg(CurInstr.A_Reg(0));
MOV(32, R(RSCRATCH), Imm32(32));
TEST(32, rm, rm);
FixupBranch skipZero = J_CC(CC_Z);
BSR(32, RSCRATCH, rm);
XOR(32, R(RSCRATCH), Imm8(0x1F)); // 31 - RSCRATCH
SetJumpTarget(skipZero);
MOV(32, rd, R(RSCRATCH));
}
void Compiler::Comp_MulOp(bool S, bool add, Gen::OpArg rd, Gen::OpArg rm, Gen::OpArg rs, Gen::OpArg rn)
{
if (Num == 0)
Comp_AddCycles_CI(S ? 3 : 1);
else
{
XOR(32, R(RSCRATCH), R(RSCRATCH));
MOV(32, R(RSCRATCH3), rs);
TEST(32, R(RSCRATCH3), R(RSCRATCH3));
FixupBranch zeroBSR = J_CC(CC_Z);
BSR(32, RSCRATCH2, R(RSCRATCH3));
NOT(32, R(RSCRATCH3));
BSR(32, RSCRATCH, R(RSCRATCH3));
CMP(32, R(RSCRATCH2), R(RSCRATCH));
CMOVcc(32, RSCRATCH, R(RSCRATCH2), CC_L);
SHR(32, R(RSCRATCH), Imm8(3));
SetJumpTarget(zeroBSR); // fortunately that's even right
Comp_AddCycles_CI(RSCRATCH, add ? 2 : 1);
}
static_assert(EAX == RSCRATCH);
MOV(32, R(RSCRATCH), rm);
if (add)
{
IMUL(32, RSCRATCH, rs);
LEA(32, rd.GetSimpleReg(), MRegSum(RSCRATCH, rn.GetSimpleReg()));
TEST(32, rd, rd);
}
else
{
IMUL(32, RSCRATCH, rs);
MOV(32, rd, R(RSCRATCH));
TEST(32, R(RSCRATCH), R(RSCRATCH));
}
if (S)
Comp_RetriveFlags(false, false, false);
}
void Compiler::A_Comp_MUL_MLA()
{
bool S = CurInstr.Instr & (1 << 20);
bool add = CurInstr.Instr & (1 << 21);
OpArg rd = MapReg(CurInstr.A_Reg(16));
OpArg rm = MapReg(CurInstr.A_Reg(0));
OpArg rs = MapReg(CurInstr.A_Reg(8));
OpArg rn;
if (add)
rn = MapReg(CurInstr.A_Reg(12));
Comp_MulOp(S, add, rd, rm, rs, rn);
}
void Compiler::Comp_RetriveFlags(bool sign, bool retriveCV, bool carryUsed)
{
CPSRDirty = true;
@ -455,6 +522,13 @@ void Compiler::T_Comp_ALU_Imm8()
}
}
void Compiler::T_Comp_MUL()
{
OpArg rd = MapReg(CurInstr.T_Reg(0));
OpArg rs = MapReg(CurInstr.T_Reg(3));
Comp_MulOp(true, false, rd, rd, rs, Imm8(-1));
}
void Compiler::T_Comp_ALU()
{
OpArg rd = MapReg(CurInstr.T_Reg(0));