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http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=f5c071d93c9e6f57930bce56b1e4f009c160a826
Upstream-Status: Pending
Properly load arguments 5 an 6 for x86-64 syscall
Use asm ("r10") and asm ("r8") to load arguments 5 an 6 for x86-64
syscall so that it works with both x32 and x86-64.
Received this patch from H.J. Lu <hjl.tools@gmail.com>
Signed-Off-By: Nitin A Kamble <nitin.a.kamble@intel.com>
2011/12/02
--- libaio-0.3.109/src/syscall-x86_64.h.x32 2009-10-09 11:17:02.000000000 -0700
+++ libaio-0.3.109/src/syscall-x86_64.h 2011-12-02 09:09:07.537603224 -0800
@@ -1,8 +1,18 @@
+#ifndef __NR_io_setup
#define __NR_io_setup 206
+#endif
+#ifndef __NR_io_destroy
#define __NR_io_destroy 207
+#endif
+#ifndef __NR_io_getevents
#define __NR_io_getevents 208
+#endif
+#ifndef __NR_io_submit
#define __NR_io_submit 209
+#endif
+#ifndef __NR_io_cancel
#define __NR_io_cancel 210
+#endif
#define __syscall_clobber "r11","rcx","memory"
#define __syscall "syscall"
@@ -42,10 +52,11 @@ return __res; \
type fname (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
{ \
long __res; \
-__asm__ volatile ("movq %5,%%r10 ;" __syscall \
+register long __a4 asm ("r10") = (long) arg4; \
+__asm__ volatile (__syscall \
: "=a" (__res) \
: "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)), \
- "d" ((long)(arg3)),"g" ((long)(arg4)) : __syscall_clobber,"r10" ); \
+ "d" ((long)(arg3)),"r" (__a4)); \
return __res; \
}
@@ -54,10 +65,11 @@ return __res; \
type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
{ \
long __res; \
-__asm__ volatile ("movq %5,%%r10 ; movq %6,%%r8 ; " __syscall \
+register long __a4 asm ("r10") = (long) arg4; \
+register long __a5 asm ("r8") = (long) arg5; \
+__asm__ volatile ( __syscall \
: "=a" (__res) \
: "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)), \
- "d" ((long)(arg3)),"g" ((long)(arg4)),"g" ((long)(arg5)) : \
- __syscall_clobber,"r8","r10" ); \
+ "d" ((long)(arg3)),"r" (__a4),"r" (__a5)); \
return __res; \
}
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