diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/mips/sysdep.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/sysdep.h b/sysdeps/unix/sysv/linux/mips/sysdep.h index 5d05c90780..b2045fcc55 100644 --- a/sysdeps/unix/sysv/linux/mips/sysdep.h +++ b/sysdeps/unix/sysv/linux/mips/sysdep.h @@ -22,3 +22,19 @@ /* List of system calls which are supported as vsyscalls. */ #define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_gettimeofday" #define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_clock_gettime" + +#ifndef __ASSEMBLER__ + +/* Standard MIPS syscalls have an error flag, and return a positive errno + when the error flag is set. Emulate this behaviour for vsyscalls so that + the INTERNAL_SYSCALL_{ERROR_P,ERRNO} macros work correctly. */ +#define INTERNAL_VSYSCALL_CALL(funcptr, err, nr, args...) \ + ({ \ + long _ret = funcptr (args); \ + err = ((unsigned long) (_ret) >= (unsigned long) -4095L); \ + if (err) \ + _ret = -_ret; \ + _ret; \ + }) + +#endif /* __ASSEMBLER__ */ |