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Keep the stack from on darwin 16-byte aligned. This fixes many JIT

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failres.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27973 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman 2006-04-25 20:54:26 +00:00
parent 0db9fe6775
commit add19dc20a
1 changed files with 13 additions and 2 deletions
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15
lib/Target/X86/X86JITInfo.cpp
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@ -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