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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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