diff options
Diffstat (limited to 'libc/sysdeps/linux/bfin/bits/syscalls.h')
| -rw-r--r-- | libc/sysdeps/linux/bfin/bits/syscalls.h | 40 |
1 files changed, 30 insertions, 10 deletions
diff --git a/libc/sysdeps/linux/bfin/bits/syscalls.h b/libc/sysdeps/linux/bfin/bits/syscalls.h index d8d628cab..5ffaa7a8b 100644 --- a/libc/sysdeps/linux/bfin/bits/syscalls.h +++ b/libc/sysdeps/linux/bfin/bits/syscalls.h @@ -4,25 +4,45 @@ # error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." #endif -#include <features.h> - /* This includes the `__NR_<name>' syscall numbers taken from the Linux kernel * header files. It also defines the traditional `SYS_<name>' macros for older * programs. */ #include <bits/sysnum.h> -/* This code is mostly cut & paste from the uClinux bfin port */ +#ifndef __set_errno +# define __set_errno(val) ((*__errno_location ()) = (val)) +#endif + +#ifndef SYS_ify +# define SYS_ify(syscall_name) (__NR_##syscall_name) +#endif #ifndef __ASSEMBLER__ -#define __syscall_return(type, res) \ -do { \ - if ((unsigned long)(res) >= (unsigned long)(-125)) \ - { __set_errno(-(res)); \ - res = -1; \ - } \ - return (type) (res); \ +/* user-visible error numbers are in the range -1 - -4095: see <asm-frv/errno.h> */ +#if defined _LIBC && !defined __set_errno +# define __syscall_return(type, res) \ +do { \ + unsigned long __sr2 = (res); \ + if (__builtin_expect ((unsigned long)(__sr2) \ + >= (unsigned long)(-4095), 0)) { \ + extern int __syscall_error (int); \ + return (type) __syscall_error (__sr2); \ + } \ + return (type) (__sr2); \ +} while (0) +#else +# define __syscall_return(type, res) \ +do { \ + unsigned long __sr2 = (res); \ + if (__builtin_expect ((unsigned long)(__sr2) \ + >= (unsigned long)(-4095), 0)) { \ + __set_errno (-__sr2); \ + __sr2 = -1; \ + } \ + return (type) (__sr2); \ } while (0) +#endif #define _syscall0(type,name) \ type name(void) { \ |