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Fixes disassembler crashes on 2013 Haswell RTM instructions.

Browse Source 
rdar://13318048


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176828 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kevin Enderby 2013-03-11 21:17:13 +00:00
parent d5bb20805e
commit 12dccaed9c
3 changed files with 21 additions and 1 deletions
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2
lib/Target/X86/X86InstrTSX.td
View File

@ -22,7 +22,7 @@ def XBEGIN : I<0, Pseudo, (outs GR32:$dst), (ins),
let isBranch = 1, isTerminator = 1, Defs = [EAX] in
def XBEGIN_4 : Ii32PCRel<0xc7, MRM_F8, (outs), (ins brtarget:$dst),
"xbegin\t$dst", []>;
"xbegin\t$dst", []>, Requires<[HasRTM]>;
def XEND : I<0x01, MRM_D5, (outs), (ins),
"xend", [(int_x86_xend)]>, TB, Requires<[HasRTM]>;

9
test/MC/Disassembler/X86/x86-64.txt
View File

@ -103,3 +103,12 @@
# CHECK: adoxq (%rax), %rax
0xf3 0x48 0x0f 0x38 0xf6 0x00
# CHECK: xbegin 53
0xc7 0xf8 0x35 0x00 0x00 0x00
# CHECK: xend
0x0f 0x01 0xd5
# CHECK: xabort $13
0xc6 0xf8 0x0d

11
utils/TableGen/X86RecognizableInstr.cpp
View File

@ -764,6 +764,17 @@ void RecognizableInstr::emitInstructionSpecifier(DisassemblerTables &tables) {
HANDLE_OPERAND(immediate)
HANDLE_OPERAND(immediate)
break;
case X86Local::MRM_F8:
if (Opcode == 0xc6) {
assert(numPhysicalOperands == 1 &&
"Unexpected number of operands for X86Local::MRM_F8");
HANDLE_OPERAND(immediate)
} else if (Opcode == 0xc7) {
assert(numPhysicalOperands == 1 &&
"Unexpected number of operands for X86Local::MRM_F8");
HANDLE_OPERAND(relocation)
}
break;
case X86Local::MRMInitReg:
// Ignored.
break;