Changes in directory llvm/lib/Target/X86:
X86JITInfo.cpp updated: 1.15 -> 1.16
---
Log message:
Keep the stack from on darwin 16-byte aligned. This fixes many JIT
failres.
---
Diffs of the changes: (+13 -2)
X86JITInfo.cpp | 15 +++++++++++++--
1 files changed, 13 insertions(+), 2 deletions(-)
Index: llvm/lib/Target/X86/X86JITInfo.cpp
diff -u llvm/lib/Target/X86/X86JITInfo.cpp:1.15
llvm/lib/Target/X86/X86JITInfo.cpp:1.16
--- llvm/lib/Target/X86/X86JITInfo.cpp:1.15 Thu Jan 26 13:55:20 2006
+++ llvm/lib/Target/X86/X86JITInfo.cpp Tue Apr 25 15:54:26 2006
@@ -59,8 +59,19 @@
"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
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