diff options
Diffstat (limited to 'lib/Target/X86/Disassembler/X86Disassembler.cpp')
| -rw-r--r-- | lib/Target/X86/Disassembler/X86Disassembler.cpp | 31 |
1 files changed, 13 insertions, 18 deletions
diff --git a/lib/Target/X86/Disassembler/X86Disassembler.cpp b/lib/Target/X86/Disassembler/X86Disassembler.cpp index 82af6fa..903e36c 100644 --- a/lib/Target/X86/Disassembler/X86Disassembler.cpp +++ b/lib/Target/X86/Disassembler/X86Disassembler.cpp @@ -231,16 +231,18 @@ static void translateImmediate(MCInst &mcInst, uint64_t immediate, default: break; case 1: - type = TYPE_MOFFS8; + if(immediate & 0x80) + immediate |= ~(0xffull); break; case 2: - type = TYPE_MOFFS16; + if(immediate & 0x8000) + immediate |= ~(0xffffull); break; case 4: - type = TYPE_MOFFS32; + if(immediate & 0x80000000) + immediate |= ~(0xffffffffull); break; case 8: - type = TYPE_MOFFS64; break; } } @@ -263,16 +265,18 @@ static void translateImmediate(MCInst &mcInst, uint64_t immediate, Opcode != X86::VMPSADBWrri && Opcode != X86::VDPPSYrri && Opcode != X86::VDPPSYrmi && Opcode != X86::VDPPDrri && Opcode != X86::VINSERTPSrr) - type = TYPE_MOFFS8; + if(immediate & 0x80) + immediate |= ~(0xffull); break; case ENCODING_IW: - type = TYPE_MOFFS16; + if(immediate & 0x8000) + immediate |= ~(0xffffull); break; case ENCODING_ID: - type = TYPE_MOFFS32; + if(immediate & 0x80000000) + immediate |= ~(0xffffffffull); break; case ENCODING_IO: - type = TYPE_MOFFS64; break; } } @@ -292,30 +296,21 @@ static void translateImmediate(MCInst &mcInst, uint64_t immediate, case TYPE_REL8: isBranch = true; pcrel = insn.startLocation + insn.immediateOffset + insn.immediateSize; - // fall through to sign extend the immediate if needed. - case TYPE_MOFFS8: if(immediate & 0x80) immediate |= ~(0xffull); break; - case TYPE_MOFFS16: - if(immediate & 0x8000) - immediate |= ~(0xffffull); - break; case TYPE_REL32: case TYPE_REL64: isBranch = true; pcrel = insn.startLocation + insn.immediateOffset + insn.immediateSize; - // fall through to sign extend the immediate if needed. - case TYPE_MOFFS32: if(immediate & 0x80000000) immediate |= ~(0xffffffffull); break; - case TYPE_MOFFS64: default: // operand is 64 bits wide. Do nothing. break; } - + if(!tryAddingSymbolicOperand(immediate + pcrel, isBranch, insn.startLocation, insn.immediateOffset, insn.immediateSize, mcInst, Dis)) |