diff options
Diffstat (limited to 'lib/Target/ARM/Disassembler/ThumbDisassemblerCore.h')
-rw-r--r-- | lib/Target/ARM/Disassembler/ThumbDisassemblerCore.h | 71 |
1 files changed, 29 insertions, 42 deletions
diff --git a/lib/Target/ARM/Disassembler/ThumbDisassemblerCore.h b/lib/Target/ARM/Disassembler/ThumbDisassemblerCore.h index 6ed2949..3725c4d 100644 --- a/lib/Target/ARM/Disassembler/ThumbDisassemblerCore.h +++ b/lib/Target/ARM/Disassembler/ThumbDisassemblerCore.h @@ -833,40 +833,32 @@ static bool DisassembleThumb1Misc(MCInst &MI, unsigned Opcode, uint32_t insn, // A8.6.53 LDM / LDMIA // A8.6.189 STM / STMIA // -// tLDM_UPD/tSTM_UPD: tRt tRt AM4ModeImm Pred-Imm Pred-CCR register_list -// tLDM: tRt AM4ModeImm Pred-Imm Pred-CCR register_list +// tLDMIA_UPD/tSTMIA_UPD: tRt tRt AM4ModeImm Pred-Imm Pred-CCR register_list +// tLDMIA: tRt AM4ModeImm Pred-Imm Pred-CCR register_list static bool DisassembleThumb1LdStMul(bool Ld, MCInst &MI, unsigned Opcode, - uint32_t insn, unsigned short NumOps, unsigned &NumOpsAdded, BO B) { - - assert((Opcode == ARM::tLDM || Opcode == ARM::tLDM_UPD || - Opcode == ARM::tSTM_UPD) && "Unexpected opcode"); - - unsigned &OpIdx = NumOpsAdded; + uint32_t insn, unsigned short NumOps, + unsigned &NumOpsAdded, BO B) { + assert((Opcode == ARM::tLDMIA || Opcode == ARM::tLDMIA_UPD || + Opcode == ARM::tSTMIA_UPD) && "Unexpected opcode"); unsigned tRt = getT1tRt(insn); - - OpIdx = 0; + NumOpsAdded = 0; // WB register, if necessary. - if (Opcode == ARM::tLDM_UPD || Opcode == ARM::tSTM_UPD) { + if (Opcode == ARM::tLDMIA_UPD || Opcode == ARM::tSTMIA_UPD) { MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, ARM::GPRRegClassID, tRt))); - ++OpIdx; + ++NumOpsAdded; } MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, ARM::GPRRegClassID, tRt))); - ++OpIdx; - - // A8.6.53 LDM / LDMIA / LDMFD - Encoding T1 - // A8.6.53 STM / STMIA / STMEA - Encoding T1 - MI.addOperand(MCOperand::CreateImm(ARM_AM::getAM4ModeImm(ARM_AM::ia))); - ++OpIdx; + ++NumOpsAdded; // Handling the two predicate operands before the reglist. - if (B->DoPredicateOperands(MI, Opcode, insn, NumOps)) - OpIdx += 2; - else { + if (B->DoPredicateOperands(MI, Opcode, insn, NumOps)) { + NumOpsAdded += 2; + } else { DEBUG(errs() << "Expected predicate operands not found.\n"); return false; } @@ -874,13 +866,12 @@ static bool DisassembleThumb1LdStMul(bool Ld, MCInst &MI, unsigned Opcode, unsigned RegListBits = slice(insn, 7, 0); // Fill the variadic part of reglist. - for (unsigned i = 0; i < 8; ++i) { + for (unsigned i = 0; i < 8; ++i) if ((RegListBits >> i) & 1) { MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, ARM::tGPRRegClassID, i))); - ++OpIdx; + ++NumOpsAdded; } - } return true; } @@ -1122,34 +1113,31 @@ static bool DisassembleThumb2LdStMul(MCInst &MI, unsigned Opcode, uint32_t insn, if (Thumb2RFEOpcode(Opcode)) return DisassembleThumb2RFE(MI, Opcode, insn, NumOps, NumOpsAdded, B); - assert((Opcode == ARM::t2LDM || Opcode == ARM::t2LDM_UPD || - Opcode == ARM::t2STM || Opcode == ARM::t2STM_UPD) + assert((Opcode == ARM::t2LDMIA || Opcode == ARM::t2LDMIA_UPD || + Opcode == ARM::t2LDMDB || Opcode == ARM::t2LDMDB_UPD || + Opcode == ARM::t2STMIA || Opcode == ARM::t2STMIA_UPD || + Opcode == ARM::t2STMDB || Opcode == ARM::t2STMDB_UPD) && "Unexpected opcode"); assert(NumOps >= 5 && "Thumb2 LdStMul expects NumOps >= 5"); - unsigned &OpIdx = NumOpsAdded; - - OpIdx = 0; + NumOpsAdded = 0; unsigned Base = getRegisterEnum(B, ARM::GPRRegClassID, decodeRn(insn)); // Writeback to base. - if (Opcode == ARM::t2LDM_UPD || Opcode == ARM::t2STM_UPD) { + if (Opcode == ARM::t2LDMIA_UPD || Opcode == ARM::t2LDMDB_UPD || + Opcode == ARM::t2STMIA_UPD || Opcode == ARM::t2STMDB_UPD) { MI.addOperand(MCOperand::CreateReg(Base)); - ++OpIdx; + ++NumOpsAdded; } MI.addOperand(MCOperand::CreateReg(Base)); - ++OpIdx; - - ARM_AM::AMSubMode SubMode = getAMSubModeForBits(getPUBits(insn)); - MI.addOperand(MCOperand::CreateImm(ARM_AM::getAM4ModeImm(SubMode))); - ++OpIdx; + ++NumOpsAdded; // Handling the two predicate operands before the reglist. - if (B->DoPredicateOperands(MI, Opcode, insn, NumOps)) - OpIdx += 2; - else { + if (B->DoPredicateOperands(MI, Opcode, insn, NumOps)) { + NumOpsAdded += 2; + } else { DEBUG(errs() << "Expected predicate operands not found.\n"); return false; } @@ -1157,13 +1145,12 @@ static bool DisassembleThumb2LdStMul(MCInst &MI, unsigned Opcode, uint32_t insn, unsigned RegListBits = insn & ((1 << 16) - 1); // Fill the variadic part of reglist. - for (unsigned i = 0; i < 16; ++i) { + for (unsigned i = 0; i < 16; ++i) if ((RegListBits >> i) & 1) { MI.addOperand(MCOperand::CreateReg(getRegisterEnum(B, ARM::GPRRegClassID, i))); - ++OpIdx; + ++NumOpsAdded; } - } return true; } |