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Diffstat (limited to 'libc/sysdeps/linux/bfin/bits/syscalls.h')
-rw-r--r--libc/sysdeps/linux/bfin/bits/syscalls.h40
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) { \