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a32_emit_x64: Reduce mov code duplication in {Read,Write}Memory

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This commit is contained in:
MerryMage 2020-06-16 10:13:08 +01:00
parent aabd0d824d
commit 58b2c83944
1 changed files with 45 additions and 72 deletions
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117
src/backend/x64/a32_emit_x64.cpp
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@ -904,6 +904,46 @@ static Xbyak::RegExp EmitVAddrLookup(BlockOfCode& code, RegAlloc& reg_alloc,
return page + tmp;
}
template<std::size_t bitsize>
static void EmitReadMemoryMov(BlockOfCode& code, const Xbyak::Reg64& value, const Xbyak::RegExp& addr) {
switch (bitsize) {
case 8:
code.movzx(value.cvt32(), code.byte[addr]);
return;
case 16:
code.movzx(value.cvt32(), word[addr]);
return;
case 32:
code.mov(value.cvt32(), dword[addr]);
return;
case 64:
code.mov(value, qword[addr]);
return;
default:
ASSERT_FALSE("Invalid bitsize");
}
}
template<std::size_t bitsize>
static void EmitWriteMemoryMov(BlockOfCode& code, const Xbyak::RegExp& addr, const Xbyak::Reg64& value) {
switch (bitsize) {
case 8:
code.mov(code.byte[addr], value.cvt8());
return;
case 16:
code.mov(word[addr], value.cvt16());
return;
case 32:
code.mov(dword[addr], value.cvt32());
return;
case 64:
code.mov(qword[addr], value);
return;
default:
ASSERT_FALSE("Invalid bitsize");
}
}
template<std::size_t bitsize>
void A32EmitX64::ReadMemory(A32EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
@ -936,26 +976,7 @@ void A32EmitX64::ReadMemory(A32EmitContext& ctx, IR::Inst* inst) {
if (const auto marker = ShouldFastmem(ctx, inst)) {
const auto location = code.getCurr();
switch (bitsize) {
case 8:
code.movzx(value.cvt32(), code.byte[r13 + vaddr]);
break;
case 16:
code.movzx(value.cvt32(), word[r13 + vaddr]);
break;
case 32:
code.mov(value.cvt32(), dword[r13 + vaddr]);
break;
case 64:
code.mov(value, qword[r13 + vaddr]);
break;
default:
ASSERT_FALSE("Invalid bitsize");
break;
}
ctx.reg_alloc.DefineValue(inst, value);
EmitReadMemoryMov<bitsize>(code, value, r13 + vaddr);
fastmem_patch_info.emplace(
Common::BitCast<u64>(location),
@ -966,29 +987,14 @@ void A32EmitX64::ReadMemory(A32EmitContext& ctx, IR::Inst* inst) {
}
);
ctx.reg_alloc.DefineValue(inst, value);
return;
}
Xbyak::Label abort, end;
const auto src_ptr = EmitVAddrLookup(code, ctx.reg_alloc, config, abort, vaddr, value);
switch (bitsize) {
case 8:
code.movzx(value.cvt32(), code.byte[src_ptr]);
break;
case 16:
code.movzx(value.cvt32(), word[src_ptr]);
break;
case 32:
code.mov(value.cvt32(), dword[src_ptr]);
break;
case 64:
code.mov(value, qword[src_ptr]);
break;
default:
ASSERT_FALSE("Invalid bitsize");
break;
}
EmitReadMemoryMov<bitsize>(code, value, src_ptr);
code.jmp(end);
code.L(abort);
code.call(wrapped_fn);
@ -1029,24 +1035,7 @@ void A32EmitX64::WriteMemory(A32EmitContext& ctx, IR::Inst* inst) {
if (const auto marker = ShouldFastmem(ctx, inst)) {
const auto location = code.getCurr();
switch (bitsize) {
case 8:
code.mov(code.byte[r13 + vaddr], value.cvt8());
break;
case 16:
code.mov(word[r13 + vaddr], value.cvt16());
break;
case 32:
code.mov(dword[r13 + vaddr], value.cvt32());
break;
case 64:
code.mov(qword[r13 + vaddr], value);
break;
default:
ASSERT_FALSE("Invalid bitsize");
break;
}
EmitWriteMemoryMov<bitsize>(code, r13 + vaddr, value);
fastmem_patch_info.emplace(
Common::BitCast<u64>(location),
@ -1063,23 +1052,7 @@ void A32EmitX64::WriteMemory(A32EmitContext& ctx, IR::Inst* inst) {
Xbyak::Label abort, end;
const auto dest_ptr = EmitVAddrLookup(code, ctx.reg_alloc, config, abort, vaddr);
switch (bitsize) {
case 8:
code.mov(code.byte[dest_ptr], value.cvt8());
break;
case 16:
code.mov(word[dest_ptr], value.cvt16());
break;
case 32:
code.mov(dword[dest_ptr], value.cvt32());
break;
case 64:
code.mov(qword[dest_ptr], value);
break;
default:
ASSERT_FALSE("Invalid bitsize");
break;
}
EmitWriteMemoryMov<bitsize>(code, dest_ptr, value);
code.jmp(end);
code.L(abort);
code.call(wrapped_fn);