diff --git a/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp b/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp index 0211581015d..f0ef2ffe8c9 100644 --- a/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp +++ b/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp @@ -679,8 +679,8 @@ static bool DisassembleCoprocessor(MCInst &MI, unsigned Opcode, uint32_t insn, } // Branch Instructions. -// BLr9: SignExtend(Imm24:'00', 32) -// Bcc, BLr9_pred: SignExtend(Imm24:'00', 32) Pred0 Pred1 +// BL: SignExtend(Imm24:'00', 32) +// Bcc, BL_pred: SignExtend(Imm24:'00', 32) Pred0 Pred1 // SMC: ZeroExtend(imm4, 32) // SVC: ZeroExtend(Imm24, 32) // @@ -760,7 +760,7 @@ static bool DisassembleBrFrm(MCInst &MI, unsigned Opcode, uint32_t insn, return true; } - assert((Opcode == ARM::Bcc || Opcode == ARM::BLr9 || Opcode == ARM::BLr9_pred + assert((Opcode == ARM::Bcc || Opcode == ARM::BL || Opcode == ARM::BL_pred || Opcode == ARM::SMC || Opcode == ARM::SVC) && "Unexpected Opcode"); @@ -778,12 +778,6 @@ static bool DisassembleBrFrm(MCInst &MI, unsigned Opcode, uint32_t insn, unsigned Imm26 = slice(insn, 23, 0) << 2; //Imm32 = signextend(Imm26); Imm32 = SignExtend32<26>(Imm26); - - // When executing an ARM instruction, PC reads as the address of the current - // instruction plus 8. The assembler subtracts 8 from the difference - // between the branch instruction and the target address, disassembler has - // to add 8 to compensate. - Imm32 += 8; } MI.addOperand(MCOperand::CreateImm(Imm32)); @@ -793,7 +787,7 @@ static bool DisassembleBrFrm(MCInst &MI, unsigned Opcode, uint32_t insn, } // Misc. Branch Instructions. -// BLXr9, BXr9 +// BLX, BX // BX, BX_RET static bool DisassembleBrMiscFrm(MCInst &MI, unsigned Opcode, uint32_t insn, unsigned short NumOps, unsigned &NumOpsAdded, BO B) { @@ -810,8 +804,7 @@ static bool DisassembleBrMiscFrm(MCInst &MI, unsigned Opcode, uint32_t insn, return true; // BLX and BX take one GPR reg. - if (Opcode == ARM::BLXr9 || Opcode == ARM::BLXr9_pred || - Opcode == ARM::BLX || Opcode == ARM::BLX_pred || + if (Opcode == ARM::BLX || Opcode == ARM::BLX_pred || Opcode == ARM::BX) { assert(NumOps >= 1 && OpInfo[OpIdx].RegClass == ARM::GPRRegClassID && "Reg operand expected"); diff --git a/test/MC/Disassembler/ARM/arm-tests.txt b/test/MC/Disassembler/ARM/arm-tests.txt index 22a73f2cda3..8b3b7c9048e 100644 --- a/test/MC/Disassembler/ARM/arm-tests.txt +++ b/test/MC/Disassembler/ARM/arm-tests.txt @@ -1,7 +1,13 @@ # RUN: llvm-mc --disassemble %s -triple=arm-apple-darwin9 | FileCheck %s # CHECK: b #0 -0xfe 0xff 0xff 0xea +0x00 0x00 0x00 0xea + +# CHECK: bl #7732 +0x8d 0x07 0x00 0xeb + +# CHECK: bleq #-4 +0xff 0xff 0xff 0x0b # CHECK: bfc r8, #0, #16 0x1f 0x80 0xcf 0xe7