diff options
| author | Alexander Gordeev <lasaine@lvk.cs.msu.su> | 2010-10-07 18:54:24 +0400 |
|---|---|---|
| committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2010-10-27 21:23:15 +0200 |
| commit | 9a4c8a3f2c753f4cee4bcbe23d28e23bbdb99e40 (patch) | |
| tree | 922c568f71e40ff93afe1c8787365b4d63bb148e /libc/sysdeps/linux/mips/sysdep.h | |
| parent | 162cfaea20d807f0ae329efe39292a9b22593b41 (diff) | |
mips: fix errno setting after syscall
If there was an error during syscall then after it's completion a3
register holds a non-zero value and v0 holds an actual error code which
should be saved in errno. This can be achieved by calling
__syscall_error with the value from v0 as a parameter. So this value
should be stored in a0, but the appropriate assembly instructions are
missing. Fixed this now by adding "move a0, v0".
I think it was once fixed by 58c5f8ba4cdf62342d05a546d15404cbbb3c4e07
but then something went wrong. Again...
Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libc/sysdeps/linux/mips/sysdep.h')
| -rw-r--r-- | libc/sysdeps/linux/mips/sysdep.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/mips/sysdep.h b/libc/sysdeps/linux/mips/sysdep.h index 0860c1a48..9de4f1ace 100644 --- a/libc/sysdeps/linux/mips/sysdep.h +++ b/libc/sysdeps/linux/mips/sysdep.h @@ -98,7 +98,8 @@ #ifdef __PIC__ #define PSEUDO(name, syscall_name, args) \ .align 2; \ - 99: la t9,__syscall_error; \ + 99: move a0, v0; \ + la t9,__syscall_error; \ jr t9; \ ENTRY(name) \ .set noreorder; \ @@ -112,7 +113,8 @@ L(syse1): #define PSEUDO(name, syscall_name, args) \ .set noreorder; \ .align 2; \ - 99: j __syscall_error; \ + 99: move a0, v0; \ + j __syscall_error; \ nop; \ ENTRY(name) \ .set noreorder; \ |