diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h | 44 |
1 files changed, 28 insertions, 16 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h index 0a95f915ab..c26d3f1307 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h +++ b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h @@ -119,24 +119,36 @@ #endif /* __ASSEMBLER__ */ #undef INLINE_SYSCALL -#define INLINE_SYSCALL(name, nr, args...) \ - ({ \ - DECLARGS_##nr(args) \ - int err; \ - asm volatile ( \ - LOADARGS_##nr \ - "svc %b1\n\t" \ - "lr %0,%%r2\n\t" \ - : "=d" (err) \ - : "I" (__NR_##name) ASMFMT_##nr \ - : "memory", "cc", "2", "3", "4", "5", "6"); \ - if (err >= 0xfffff001) \ - { \ - __set_errno(-err); \ - err = 0xffffffff; \ - } \ +#define INLINE_SYSCALL(name, nr, args...) \ + ({ \ + unsigned int err = INTERNAL_SYSCALL (name, nr, args); \ + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (err), 0)) \ + { \ + __set_errno (INTERNAL_SYSCALL_ERRNO (err)); \ + err = 0xffffffff; \ + } \ + (int) err; }) + +#undef INTERNAL_SYSCALL +#define INTERNAL_SYSCALL(name, nr, args...) \ + ({ \ + DECLARGS_##nr(args) \ + int err; \ + asm volatile ( \ + LOADARGS_##nr \ + "svc %b1\n\t" \ + "lr %0,%%r2\n\t" \ + : "=d" (err) \ + : "I" (__NR_##name) ASMFMT_##nr \ + : "memory", "cc", "2", "3", "4", "5", "6"); \ (int) err; }) +#undef INTERNAL_SYSCALL_ERROR_P +#define INTERNAL_SYSCALL_ERROR_P(val) ((unsigned int) (val) >= 0xfffff001u) + +#undef INTERNAL_SYSCALL_ERRNO +#define INTERNAL_SYSCALL_ERRNO(val) (-(val)) + #define DECLARGS_0() #define DECLARGS_1(arg1) \ unsigned int gpr2 = (unsigned int) (arg1); |