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[asan] fix asan-rt interceptors on Snow Leopard. Patch by glider@google.com 

llvm-svn: 146263
This commit is contained in:
Kostya Serebryany 2011-12-09 18:18:54 +00:00
parent e7739d484f
commit 0698b852ed
1 changed files with 3 additions and 1 deletions
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4
compiler-rt/lib/asan/mach_override/mach_override.c
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@ -641,6 +641,8 @@ static AsmInstructionMatch possibleInstructions[] = {
// TODO(glider): disassembling the "0x48, 0x89" sequences is trickier than it's done below.
// If it stops working, refer to http://ref.x86asm.net/geek.html#modrm_byte_32_64 to do it
// more accurately.
// Note: 0x48 is in fact the REX.W prefix, but it might be wrong to treat it as a separate
// instruction.
static AsmInstructionMatch possibleInstructions[] = {
{ 0x5, {0xFF, 0x00, 0x00, 0x00, 0x00}, {0xE9, 0x00, 0x00, 0x00, 0x00} }, // jmp 0x????????
{ 0x1, {0xFF}, {0x90} }, // nop
@ -660,7 +662,7 @@ static AsmInstructionMatch possibleInstructions[] = {
{ 0x2, {0xFF, 0xFF}, {0x31, 0xC0} }, // xor %eax, %eax
{ 0x5, {0xFF, 0x00, 0x00, 0x00, 0x00}, {0x25, 0x00, 0x00, 0x00, 0x00} }, // and $imm, %eax
{ 0x8, {0xFF, 0xFF, 0x3F, 0xFF, 0x00, 0x00, 0x00, 0x00},
{ 0x8, {0xFF, 0xFF, 0xCF, 0xFF, 0x00, 0x00, 0x00, 0x00},
{0x48, 0x8B, 0x04, 0x25, 0x00, 0x00, 0x00, 0x00}, }, // mov $imm, %{rax,rdx,rsp,rsi}
{ 0x4, {0xFF, 0xFF, 0xFF, 0x00}, {0x48, 0x83, 0xFA, 0x00}, }, // cmp $i8, %rdx
{ 0x4, {0xFF, 0xFF, 0x00, 0x00}, {0x83, 0x7f, 0x00, 0x00}, }, // cmpl $imm, $imm(%rdi)