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| author | Nate Begeman <natebegeman@mac.com> | 2006-04-25 20:54:26 +0000 |
|---|---|---|
| committer | Nate Begeman <natebegeman@mac.com> | 2006-04-25 20:54:26 +0000 |
| commit | add19dc20a519295deb57bd5a89014d80c540930 (patch) | |
| tree | fe51cbbc6e6e54e6f9b4dd555d6e5c64eb82be44 /lib/Target/X86/X86JITInfo.cpp | |
| parent | 0db9fe6775853d62632ad299dd734b6ba6c6b336 (diff) | |
| download | external_llvm-add19dc20a519295deb57bd5a89014d80c540930.zip external_llvm-add19dc20a519295deb57bd5a89014d80c540930.tar.gz external_llvm-add19dc20a519295deb57bd5a89014d80c540930.tar.bz2 | |
Keep the stack from on darwin 16-byte aligned. This fixes many JIT
failres.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27973 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86JITInfo.cpp')
| -rw-r--r-- | lib/Target/X86/X86JITInfo.cpp | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/lib/Target/X86/X86JITInfo.cpp b/lib/Target/X86/X86JITInfo.cpp index 5cf3b72..19ff68b 100644 --- a/lib/Target/X86/X86JITInfo.cpp +++ b/lib/Target/X86/X86JITInfo.cpp @@ -59,8 +59,19 @@ extern "C" { "movl %esp, %ebp\n" // Standard prologue "pushl %eax\n" "pushl %edx\n" // save EAX/EDX -#if defined(__CYGWIN__) || defined(__APPLE__) - "call _X86CompilationCallback2\n" +#if defined(__CYGWIN__) + "call _X86CompilationCallback2\n" +#elif defined(__APPLE__) + "movl 4(%ebp), %eax\n" // load the address of return address + "movl $24, %edx\n" // if the opcode of the instruction at the + "cmpb $-51, (%eax)\n" // return address is our 0xCD marker, then + "movl $12, %eax\n" // subtract 24 from %esp to realign it to 16 + "cmovne %eax, %edx\n" // bytes after the push of edx, the amount to. + "subl %edx, %esp\n" // the push of edx to keep it aligned. + "pushl %edx\n" // subtract. Otherwise, subtract 12 bytes after + "call _X86CompilationCallback2\n" + "popl %edx\n" + "addl %edx, %esp\n" #else "call X86CompilationCallback2\n" #endif |