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ppc: Add mfcr and mtcrf support to assembler

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This commit is contained in:
Crementif 2026-07-05 23:19:53 +02:00
parent 880d2b3bd0
commit c201c65147
2 changed files with 18 additions and 0 deletions
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16
src/Cemu/PPCAssembler/ppcAssembler.cpp
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@ -307,6 +307,8 @@ const char* ppcAssembler_getInstructionName(uint32 ppcAsmOp)
case PPCASM_OP_MTLR: return "MTLR";
case PPCASM_OP_MFCTR: return "MFCTR";
case PPCASM_OP_MTCTR: return "MTCTR";
case PPCASM_OP_MFCR: return "MFCR";
case PPCASM_OP_MTCRF: return "MTCRF";
case PPCASM_OP_CROR: return "CROR";
case PPCASM_OP_CRNOR: return "CRNOR";
@ -1192,6 +1194,8 @@ PPCInstructionDef ppcInstructionTable[] =
{PPCASM_OP_MTLR, 0, 31, 467, OPC_NONE, OP_FORM_DYNAMIC, FLG_DEFAULT, 0, 0, nullptr, {EncodedOperand_GPR(21)}, {EncodedConstraint_FixedSPR(8)} },
{PPCASM_OP_MFCTR, 0, 31, 339, OPC_NONE, OP_FORM_DYNAMIC, FLG_DEFAULT, 0, 0, nullptr, {EncodedOperand_GPR(21)}, {EncodedConstraint_FixedSPR(9)} },
{PPCASM_OP_MTCTR, 0, 31, 467, OPC_NONE, OP_FORM_DYNAMIC, FLG_DEFAULT, 0, 0, nullptr, {EncodedOperand_GPR(21)}, {EncodedConstraint_FixedSPR(9)} },
{PPCASM_OP_MFCR, 0, 31, 19, OPC_NONE, OP_FORM_DYNAMIC, FLG_DEFAULT, 0, 0, nullptr, {EncodedOperand_GPR(21)}},
{PPCASM_OP_MTCRF, 0, 31, 144, OPC_NONE, OP_FORM_DYNAMIC, FLG_DEFAULT, 0, 0, nullptr, {EncodedOperand_IMM(12, 8, false), EncodedOperand_GPR(21)}},
{PPCASM_OP_ADD, 0, 31, 266, OPC_NONE, OP_FORM_DYNAMIC, FLG_DEFAULT, C_MASK_RC, 0, nullptr, {EncodedOperand_GPR(21), EncodedOperand_GPR(16), EncodedOperand_GPR(11)} },
{PPCASM_OP_ADD_, 0, 31, 266, OPC_NONE, OP_FORM_DYNAMIC, FLG_DEFAULT, C_MASK_RC, C_BIT_RC, nullptr, {EncodedOperand_GPR(21), EncodedOperand_GPR(16), EncodedOperand_GPR(11)} },
@ -3591,6 +3595,18 @@ void ppcAsmTestDisassembler()
_testAsm(0x6fe9ff00, "xoris r9, r31, 0xFF00");
_testAsm(0x6fe9ffff, "xoris r9, r31, 0xFFFF");
// mfcr / mtcrf
_testAsm(0x7D800026, "mfcr r12");
disassemble(0x7D800026, PPCASM_OP_MFCR);
checkOperandMask(true);
checkOpGPR(0, 12);
_testAsm(0x7D808120, "mtcrf 8, r12");
disassemble(0x7D808120, PPCASM_OP_MTCRF);
checkOperandMask(true, true);
checkOpImm(0, 8);
checkOpGPR(1, 12);
// data directives
_testAsmArray({ 0x00, 0x00, 0x00, 0x01 }, ".int 1");
_testAsmArray({ 0x00, 0x00, 0x00, 0x01, 0x11, 0x22, 0x33, 0x44 }, ".int 1, 0x11223344");

2
src/Cemu/PPCAssembler/ppcAssembler.h
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@ -278,6 +278,8 @@ enum PPCASM_OP
// cache & misc
PPCASM_OP_ISYNC,
PPCASM_OP_MFCR, // move from condition register
PPCASM_OP_MTCRF, // move to condition register fields
// extended mnemonics
PPCASM_OP_NOP, // ORI