saulteafarmer/XenonRecomp
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Control flow instructions & local PPC context test.

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This commit is contained in:
Skyth 2024-09-12 15:34:22 +03:00
parent a03c2e89e7
commit 589104a0ef
2 changed files with 48 additions and 3 deletions
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43
PowerRecomp/main.cpp
View File

@ -63,7 +63,8 @@ int main()
name = std::format("sub_{:X}", base);
}
std::println(f, "void {}(PPCContext& __restrict ctx, uint8_t* __restrict base) {{", name);
std::println(f, "void {}(PPCContext& __restrict callerCtx, uint8_t* base) {{", name);
std::println(f, "\tPPCContext ctx = callerCtx;");
std::println(f, "\tuint32_t ea;\n");
ppc_insn insn;
@ -133,16 +134,33 @@ int main()
break;
case PPC_INST_B:
// TODO: tail calls
std::println(f, "\tgoto loc_{:X};", insn.operands[0]);
break;
case PPC_INST_BCTR:
case PPC_INST_BCTRL:
case PPC_INST_BDNZ:
case PPC_INST_BDNZF:
case PPC_INST_BEQ:
break;
case PPC_INST_BEQLR:
std::println(f, "\tif (ctx.cr{}.eq) goto end;", insn.operands[0]);
break;
case PPC_INST_BGE:
break;
case PPC_INST_BGELR:
std::println(f, "\tif (!ctx.cr{}.lt) goto end;", insn.operands[0]);
break;
case PPC_INST_BGT:
break;
case PPC_INST_BGTLR:
std::println(f, "\tif (ctx.cr{}.gt) goto end;", insn.operands[0]);
break;
case PPC_INST_BL:
@ -167,16 +185,21 @@ int main()
break;
case PPC_INST_BLR:
// TODO: do they use this for anything other than a return?
std::println(f, "\treturn;");
std::println(f, "\tgoto end;");
break;
case PPC_INST_BLRL:
case PPC_INST_BLT:
case PPC_INST_BLTLR:
break;
case PPC_INST_BNE:
std::println(f, "\tif (!ctx.cr{}.eq) goto loc_{:X};", insn.operands[0], insn.operands[1]);
break;
case PPC_INST_BNECTR:
case PPC_INST_BNELR:
case PPC_INST_CCTPL:
case PPC_INST_CCTPM:
case PPC_INST_CLRLDI:
@ -186,7 +209,12 @@ int main()
case PPC_INST_CMPLD:
case PPC_INST_CMPLDI:
case PPC_INST_CMPLW:
break;
case PPC_INST_CMPLWI:
std::println(f, "\tctx.cr{}.compare<uint32_t>(ctx.r{}.u32, {});", insn.operands[0], insn.operands[1], insn.operands[2]);
break;
case PPC_INST_CMPW:
case PPC_INST_CMPWI:
case PPC_INST_CNTLZD:
@ -455,7 +483,13 @@ int main()
case PPC_INST_STWUX:
case PPC_INST_STWX:
break;
case PPC_INST_SUBF:
// TODO: . variant
std::println(f, "\tctx.r{}.s64 = ctx.r{}.s64 - ctx.r{}.s64;", insn.operands[0], insn.operands[1], insn.operands[2]);
break;
case PPC_INST_SUBFC:
case PPC_INST_SUBFE:
case PPC_INST_SUBFIC:
@ -581,6 +615,9 @@ int main()
}
}
std::println(f, "end:");
std::println(f, "\tcallerCtx = ctx;");
std::println(f, "}}\n");
}

8
PowerUtils/ppc_context.h
View File

@ -42,6 +42,14 @@ struct PPCCRRegister
uint8_t gt;
uint8_t eq;
uint8_t so;
template<typename T>
void compare(T left, T right)
{
lt = left < right;
gt = left > right;
eq = left == right;
}
};
typedef float float128[4];