lxdream 0.9.1| filename | acinclude.m4 |
| changeset | 923:13ac59a786f4 |
| next | 927:17b6b9e245d8 |
| author | nkeynes |
| date | Sun Dec 14 07:50:48 2008 +0000 (15 years ago) |
| permissions | -rw-r--r-- |
| last change | Setup a 'proper' stackframe in translated blocks. This doesn't affect performance noticeably, but does ensure that a) The stack is aligned correctly on OS X with no extra effort, and b) We can't mess up the stack and crash that way anymore. Replace all PUSH/POP instructions (outside of prologue/epilogue) with ESP-rel moves to stack local variables. Finally merge ia32mac and ia32abi together, since they're pretty much the same now anyway (and thereby simplifying maintenance a good deal) |
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1 # AC_CHECK_FASTCALL([if-ok],[if-notok])
2 # Test if the compiler recognizes __attribute__((regparm(3))) - we don't
3 # currently check if it actually works correctly, but probably should...
4 # -----------------------
5 AC_DEFUN([AC_CHECK_FASTCALL], [
6 AC_MSG_CHECKING([support for fastcall calling conventions]);
7 AC_RUN_IFELSE([
8 AC_LANG_SOURCE([[
9 int __attribute__((regparm(3))) foo(int a, int b) { return a+b; }
11 int main(int argc, char *argv[])
12 {
13 return foo( 1, 2 ) == 3 ? 0 : 1;
14 }]])], [
15 AC_MSG_RESULT([yes])
16 $1 ], [
17 AC_MSG_RESULT([no])
18 $2 ])
19 ])
.