Fixed #32 a SEGFAULT bug with gcc-4.6. According to i386 calling convention, The called funtion should remove the hidden return value address from the stack.

2011-06-03 13:19:54 +08:00 · 2011-06-03 13:19:54 +08:00 · 31040e4d80
parent 3d7e62eb8b
commit 31040e4d80
2 changed files with 4 additions and 0 deletions
--- a/Changelog.txt
+++ b/Changelog.txt
@ -21,6 +21,7 @@ common:

 x86/x86_64:
 	* Fixed #28 a wrong result of dsdot on x86_64.
+	* Fixed #32 a SEGFAULT bug of zdotc with gcc-4.6.

 MIPS64:
 	* Fixed #28 a wrong result of dsdot on Loongson3A/MIPS64. 
--- a/kernel/x86/zdot_sse2.S
+++ b/kernel/x86/zdot_sse2.S
@ -1541,5 +1541,8 @@
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+/*remove the hidden return value address from the stack.*/
+	popl	%ecx
+	xchgl	%ecx, 0(%esp)
 	ret
 	EPILOGUE