diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86_64/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86_64/sysdep.h | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h index 2da4d41fac..5c4c7082d1 100644 --- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h +++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h @@ -186,6 +186,17 @@ #undef INLINE_SYSCALL #define INLINE_SYSCALL(name, nr, args...) \ ({ \ + unsigned long resultvar = INTERNAL_SYSCALL (name, nr, args); \ + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (resultvar), 0)) \ + { \ + __set_errno (INTERNAL_SYSCALL_ERRNO (resultvar)); \ + resultvar = (unsigned long) -1; \ + } \ + (long) resultvar; }) + +#undef INTERNAL_SYSCALL +#define INTERNAL_SYSCALL(name, nr, args...) \ + ({ \ unsigned long resultvar; \ LOAD_ARGS_##nr (args) \ asm volatile ( \ @@ -193,13 +204,14 @@ "syscall\n\t" \ : "=a" (resultvar) \ : "i" (__NR_##name) ASM_ARGS_##nr : "memory", "cc", "r11", "cx"); \ - if (resultvar >= (unsigned long) -4095) \ - { \ - __set_errno (-resultvar); \ - resultvar = (unsigned long) -1; \ - } \ (long) resultvar; }) +#undef INTERNAL_SYSCALL_ERROR_P +#define INTERNAL_SYSCALL_ERROR_P(val) ((unsigned long) (val) >= -4095L) + +#undef INTERNAL_SYSCALL_ERRNO +#define INTERNAL_SYSCALL_ERRNO(val) (-(val)) + #define LOAD_ARGS_0() #define ASM_ARGS_0 |