From 461e8b2861ceb69ddffb668d68a564661d606e0d Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Wed, 11 Jun 2003 01:45:27 +0000
Subject: Fix arm syscall implementation so it does not blow chunks with gcc
 3.3  -Erik

---
 libc/sysdeps/linux/arm/bits/syscalls.h | 32 ++++++++++++++++++++++++--------
 1 file changed, 24 insertions(+), 8 deletions(-)

(limited to 'libc/sysdeps/linux/arm/bits/syscalls.h')

diff --git a/libc/sysdeps/linux/arm/bits/syscalls.h b/libc/sysdeps/linux/arm/bits/syscalls.h
index 937f13a0d..245266730 100644
--- a/libc/sysdeps/linux/arm/bits/syscalls.h
+++ b/libc/sysdeps/linux/arm/bits/syscalls.h
@@ -18,7 +18,7 @@
 
 /*
    Some of the sneaky macros in the code were taken from 
-   glibc-2.2.5/sysdeps/unix/sysv/linux/arm/sysdep.h
+   glibc-2.3.2/sysdeps/unix/sysv/linux/arm/sysdep.h
 */
 
 #ifndef __ASSEMBLER__
@@ -84,7 +84,20 @@ return (type) (INLINE_SYSCALL(name, 7, arg1, arg2, arg3, arg4, arg5, arg6, arg7)
 
 
 #undef INLINE_SYSCALL
-#define INLINE_SYSCALL(name, nr, args...)			\
+#define INLINE_SYSCALL(name, nr, args...)				\
+  ({ unsigned int _sys_result = INTERNAL_SYSCALL (name, , nr, args);	\
+     if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (_sys_result, ), 0))	\
+       {								\
+	 __set_errno (INTERNAL_SYSCALL_ERRNO (_sys_result, ));		\
+	 _sys_result = (unsigned int) -1;				\
+       }								\
+     (int) _sys_result; })
+
+#undef INTERNAL_SYSCALL_DECL
+#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+
+#undef INTERNAL_SYSCALL
+#define INTERNAL_SYSCALL(name, err, nr, args...)		\
   ({ unsigned int _sys_result;					\
      {								\
        register int _a1 asm ("a1");				\
@@ -92,16 +105,18 @@ return (type) (INLINE_SYSCALL(name, 7, arg1, arg2, arg3, arg4, arg5, arg6, arg7)
        asm volatile ("swi	%1	@ syscall " #name	\
 		     : "=r" (_a1)				\
 		     : "i" (SYS_ify(name)) ASM_ARGS_##nr	\
-		     : "a1", "memory");				\
+		     : "memory");				\
        _sys_result = _a1;					\
      }								\
-     if (_sys_result >= (unsigned int) -4095)			\
-       {							\
-	 __set_errno (-_sys_result);				\
-	 _sys_result = (unsigned int) -1;			\
-       }							\
      (int) _sys_result; })
 
+#undef INTERNAL_SYSCALL_ERROR_P
+#define INTERNAL_SYSCALL_ERROR_P(val, err) \
+  ((unsigned int) (val) >= 0xfffff001u)
+
+#undef INTERNAL_SYSCALL_ERRNO
+#define INTERNAL_SYSCALL_ERRNO(val, err)	(-(val))
+
 #define LOAD_ARGS_0()
 #define ASM_ARGS_0
 #define LOAD_ARGS_1(a1)				\
@@ -133,5 +148,6 @@ return (type) (INLINE_SYSCALL(name, 7, arg1, arg2, arg3, arg4, arg5, arg6, arg7)
   LOAD_ARGS_6 (a1, a2, a3, a4, a5, a6)
 #define ASM_ARGS_7	ASM_ARGS_6, "r" (_v3)
 
+
 #endif /* __ASSEMBLER__ */
 #endif /* _BITS_SYSCALLS_H */
-- 
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