Rework syscall handling. Rewrite syscall handlers for x86 and ARM.

Prepare to kill the UNIFIED_SYSCALL option and instead have it be
a per arch thing that is either enabled or not for that arch.
 -Erik

20 files changed, 423 insertions, 886 deletions

diff --git a/libc/sysdeps/linux/alpha/bits/syscalls.h b/libc/sysdeps/linux/alpha/bits/syscalls.h
index e1ee1b95c..da6a6d43e 100644
--- a/libc/sysdeps/linux/alpha/bits/syscalls.h
+++ b/libc/sysdeps/linux/alpha/bits/syscalls.h
@@ -1,187 +1,15 @@
-/* Unlike the asm/unistd.h kernel header file (which this is partly based on),
- * this file must be able to cope with PIC and non-PIC code.  For some arches
- * there is no difference.  For x86 (which has far too few registers) there is
- * a difference.   Regardless, including asm/unistd.h is hereby officially
- * forbidden.  Don't do it.  It is bad for you.  */ 
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
+#endif
 
+#include <features.h>
 
-#define _syscall_return(type)						\
-	return (_sc_err ? errno = _sc_ret, _sc_ret = -1L : 0), (type) _sc_ret
-
-#define _syscall_clobbers						\
-	"$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8",			\
-	"$22", "$23", "$24", "$25", "$27", "$28" 			\
-
-#define _syscall0(type, name)						\
-type name(void)								\
-{									\
-	long _sc_ret, _sc_err;						\
-	{								\
-		register long _sc_0 __asm__("$0");			\
-		register long _sc_19 __asm__("$19");			\
-									\
-		_sc_0 = __NR_##name;					\
-		__asm__("callsys # %0 %1 %2"				\
-			: "=r"(_sc_0), "=r"(_sc_19)			\
-			: "0"(_sc_0)					\
-			: _syscall_clobbers);				\
-		_sc_ret = _sc_0, _sc_err = _sc_19;			\
-	}								\
-	_syscall_return(type);						\
-}
-
-#define _syscall1(type,name,type1,arg1)					\
-type name(type1 arg1)							\
-{									\
-	long _sc_ret, _sc_err;						\
-	{								\
-		register long _sc_0 __asm__("$0");			\
-		register long _sc_16 __asm__("$16");			\
-		register long _sc_19 __asm__("$19");			\
-									\
-		_sc_0 = __NR_##name;					\
-		_sc_16 = (long) (arg1);					\
-		__asm__("callsys # %0 %1 %2 %3"				\
-			: "=r"(_sc_0), "=r"(_sc_19)			\
-			: "0"(_sc_0), "r"(_sc_16)			\
-			: _syscall_clobbers);				\
-		_sc_ret = _sc_0, _sc_err = _sc_19;			\
-	}								\
-	_syscall_return(type);						\
-}
-
-#define _syscall2(type,name,type1,arg1,type2,arg2)			\
-type name(type1 arg1,type2 arg2)					\
-{									\
-	long _sc_ret, _sc_err;						\
-	{								\
-		register long _sc_0 __asm__("$0");			\
-		register long _sc_16 __asm__("$16");			\
-		register long _sc_17 __asm__("$17");			\
-		register long _sc_19 __asm__("$19");			\
-									\
-		_sc_0 = __NR_##name;					\
-		_sc_16 = (long) (arg1);					\
-		_sc_17 = (long) (arg2);					\
-		__asm__("callsys # %0 %1 %2 %3 %4"			\
-			: "=r"(_sc_0), "=r"(_sc_19)			\
-			: "0"(_sc_0), "r"(_sc_16), "r"(_sc_17)		\
-			: _syscall_clobbers);				\
-		_sc_ret = _sc_0, _sc_err = _sc_19;			\
-	}								\
-	_syscall_return(type);						\
-}
-
-#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)		\
-type name(type1 arg1,type2 arg2,type3 arg3)				\
-{									\
-	long _sc_ret, _sc_err;						\
-	{								\
-		register long _sc_0 __asm__("$0");			\
-		register long _sc_16 __asm__("$16");			\
-		register long _sc_17 __asm__("$17");			\
-		register long _sc_18 __asm__("$18");			\
-		register long _sc_19 __asm__("$19");			\
-									\
-		_sc_0 = __NR_##name;					\
-		_sc_16 = (long) (arg1);					\
-		_sc_17 = (long) (arg2);					\
-		_sc_18 = (long) (arg3);					\
-		__asm__("callsys # %0 %1 %2 %3 %4 %5"			\
-			: "=r"(_sc_0), "=r"(_sc_19)			\
-			: "0"(_sc_0), "r"(_sc_16), "r"(_sc_17),		\
-			  "r"(_sc_18)					\
-			: _syscall_clobbers);				\
-		_sc_ret = _sc_0, _sc_err = _sc_19;			\
-	}								\
-	_syscall_return(type);						\
-}
-
-#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4)		 \
-{									 \
-	long _sc_ret, _sc_err;						\
-	{								\
-		register long _sc_0 __asm__("$0");			\
-		register long _sc_16 __asm__("$16");			\
-		register long _sc_17 __asm__("$17");			\
-		register long _sc_18 __asm__("$18");			\
-		register long _sc_19 __asm__("$19");			\
-									\
-		_sc_0 = __NR_##name;					\
-		_sc_16 = (long) (arg1);					\
-		_sc_17 = (long) (arg2);					\
-		_sc_18 = (long) (arg3);					\
-		_sc_19 = (long) (arg4);					\
-		__asm__("callsys # %0 %1 %2 %3 %4 %5 %6"		\
-			: "=r"(_sc_0), "=r"(_sc_19)			\
-			: "0"(_sc_0), "r"(_sc_16), "r"(_sc_17),		\
-			  "r"(_sc_18), "1"(_sc_19)			\
-			: _syscall_clobbers);				\
-		_sc_ret = _sc_0, _sc_err = _sc_19;			\
-	}								\
-	_syscall_return(type);						\
-} 
-
-#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
-	  type5,arg5)							 \
-type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5)	\
-{									\
-	long _sc_ret, _sc_err;						\
-	{								\
-		register long _sc_0 __asm__("$0");			\
-		register long _sc_16 __asm__("$16");			\
-		register long _sc_17 __asm__("$17");			\
-		register long _sc_18 __asm__("$18");			\
-		register long _sc_19 __asm__("$19");			\
-		register long _sc_20 __asm__("$20");			\
-									\
-		_sc_0 = __NR_##name;					\
-		_sc_16 = (long) (arg1);					\
-		_sc_17 = (long) (arg2);					\
-		_sc_18 = (long) (arg3);					\
-		_sc_19 = (long) (arg4);					\
-		_sc_20 = (long) (arg5);					\
-		__asm__("callsys # %0 %1 %2 %3 %4 %5 %6 %7"		\
-			: "=r"(_sc_0), "=r"(_sc_19)			\
-			: "0"(_sc_0), "r"(_sc_16), "r"(_sc_17),		\
-			  "r"(_sc_18), "1"(_sc_19), "r"(_sc_20)		\
-			: _syscall_clobbers);				\
-		_sc_ret = _sc_0, _sc_err = _sc_19;			\
-	}								\
-	_syscall_return(type);						\
-}
-
-#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
-	  type5,arg5,type6,arg6)					 \
-type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, type6 arg6)\
-{									\
-	long _sc_ret, _sc_err;						\
-	{								\
-		register long _sc_0 __asm__("$0");			\
-		register long _sc_16 __asm__("$16");			\
-		register long _sc_17 __asm__("$17");			\
-		register long _sc_18 __asm__("$18");			\
-		register long _sc_19 __asm__("$19");			\
-		register long _sc_20 __asm__("$20");			\
-		register long _sc_21 __asm__("$21");			\
-									\
-		_sc_0 = __NR_##name;					\
-		_sc_16 = (long) (arg1);					\
-		_sc_17 = (long) (arg2);					\
-		_sc_18 = (long) (arg3);					\
-		_sc_19 = (long) (arg4);					\
-		_sc_20 = (long) (arg5);					\
-		_sc_21 = (long) (arg6);					\
-		__asm__("callsys # %0 %1 %2 %3 %4 %5 %6 %7 %8"		\
-			: "=r"(_sc_0), "=r"(_sc_19)			\
-			: "0"(_sc_0), "r"(_sc_16), "r"(_sc_17),		\
-			  "r"(_sc_18), "1"(_sc_19), "r"(_sc_20), "r"(_sc_21) \
-			: _syscall_clobbers);				\
-		_sc_ret = _sc_0, _sc_err = _sc_19;			\
-	}								\
-	_syscall_return(type);						\
-}
-
+/* Do something very evil for now.  Until we create our own syscall
+ * macros, short circuit bits/syscall.h  and use asm/unistd.h instead */
+#define _BITS_SYSCALL_H
+#include <asm/unistd.h>
 
+#endif /* _BITS_SYSCALLS_H */
 
diff --git a/libc/sysdeps/linux/arm/bits/syscalls.h b/libc/sysdeps/linux/arm/bits/syscalls.h
index 42b20ffea..0bf2af4d5 100644
--- a/libc/sysdeps/linux/arm/bits/syscalls.h
+++ b/libc/sysdeps/linux/arm/bits/syscalls.h
@@ -1,119 +1,120 @@
-/* Unlike the asm/unistd.h kernel header file (which this is partly based on),
- * this file must be able to cope with PIC and non-PIC code.  For some arches
- * there is no difference.  For x86 (which has far too few registers) there is
- * a difference.   Regardless, including asm/unistd.h is hereby officially
- * forbidden.  Don't do it.  It is bad for you.  */
-
-#include <features.h>
-
-// TODO -- Add support for __UCLIBC_USE_UNIFIED_SYSCALL__
-
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
+#endif
 
-#define __sys2(x) #x
-#define __sys1(x) __sys2(x)
+/* 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/syscall.h>
 
-#ifndef __syscall
-#define __syscall(name) "swi\t" __sys1(__NR_##name) "\n\t"
+#ifndef __set_errno
+# define __set_errno(val) (*__errno_location ()) = (val)
+#endif
+#ifndef SYS_ify
+# define SYS_ify(syscall_name)	(__NR_##syscall_name)
 #endif
 
-#define __syscall_return(type, res)					\
-do {									\
-	if ((unsigned long)(res) >= (unsigned long)(-125)) {		\
-		errno = -(res);						\
-		res = -1;						\
-	}								\
-	return (type) (res);						\
-} while (0)
+/*
+   Some of the sneaky macros in the code were taken from 
+   glibc-2.2.5/sysdeps/unix/sysv/linux/arm/sysdep.h
+*/
 
+#ifndef __ASSEMBLER__
 
-#define _syscall0(type,name)						\
-type name(void) {							\
-  long __res;								\
-  __asm__ __volatile__ (						\
-  __syscall(name)							\
-  "mov %0,r0"								\
-  :"=r" (__res) : : "r0","lr");						\
-  __syscall_return(type,__res);						\
+#undef _syscall0
+#define _syscall0(type,name) \
+type name(void) \
+{ \
+return (type) (INLINE_SYSCALL(name, 0)); \
 }
 
-#define _syscall1(type,name,type1,arg1)					\
-type name(type1 arg1) {							\
-  long __res;								\
-  __asm__ __volatile__ (						\
-  "mov\tr0,%1\n\t"							\
-  __syscall(name)							\
-  "mov %0,r0"								\
-        : "=r" (__res)							\
-        : "r" ((long)(arg1))						\
-	: "r0","lr");							\
-  __syscall_return(type,__res);						\
+#undef _syscall1
+#define _syscall1(type,name,type1,arg1) \
+type name(type1 arg1) \
+{ \
+return (type) (INLINE_SYSCALL(name, 1, arg1)); \
 }
 
-#define _syscall2(type,name,type1,arg1,type2,arg2)			\
-type name(type1 arg1,type2 arg2) {					\
-  long __res;								\
-  __asm__ __volatile__ (						\
-  "mov\tr0,%1\n\t"							\
-  "mov\tr1,%2\n\t"							\
-  __syscall(name)							\
-  "mov\t%0,r0"								\
-        : "=r" (__res)							\
-        : "r" ((long)(arg1)),"r" ((long)(arg2))				\
-	: "r0","r1","lr");						\
-  __syscall_return(type,__res);						\
+#undef _syscall2
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
+type name(type1 arg1,type2 arg2) \
+{ \
+return (type) (INLINE_SYSCALL(name, 2, arg1, arg2)); \
 }
 
-
-#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)		\
-type name(type1 arg1,type2 arg2,type3 arg3) {				\
-  long __res;								\
-  __asm__ __volatile__ (						\
-  "mov\tr0,%1\n\t"							\
-  "mov\tr1,%2\n\t"							\
-  "mov\tr2,%3\n\t"							\
-  __syscall(name)							\
-  "mov\t%0,r0"								\
-        : "=r" (__res)							\
-        : "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3))	\
-        : "r0","r1","r2","lr");						\
-  __syscall_return(type,__res);						\
+#undef _syscall3
+#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
+type name(type1 arg1,type2 arg2,type3 arg3) \
+{ \
+return (type) (INLINE_SYSCALL(name, 3, arg1, arg2, arg3)); \
 }
 
 #undef _syscall4
-#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)\
-type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {		\
-  long __res;								\
-  __asm__ __volatile__ (						\
-  "mov\tr0,%1\n\t"							\
-  "mov\tr1,%2\n\t"							\
-  "mov\tr2,%3\n\t"							\
-  "mov\tr3,%4\n\t"							\
-  __syscall(name)							\
-  "mov\t%0,r0"								\
-  	: "=r" (__res)							\
-  	: "r" ((long)(arg1)),"r" ((long)(arg2)),                        \
-	  "r" ((long)(arg3)),"r" ((long)(arg4))	                        \
-  	: "r0","r1","r2","r3","lr");					\
-  __syscall_return(type,__res);						\
-}
+#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+return (type) (INLINE_SYSCALL(name, 4, arg1, arg2, arg3, arg4)); \
+} 
 
 #undef _syscall5
-#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5)\
-type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) {		\
-  long __res;								\
-  __asm__ __volatile__ (						\
-  "mov\tr0,%1\n\t"							\
-  "mov\tr1,%2\n\t"							\
-  "mov\tr2,%3\n\t"							\
-  "mov\tr3,%4\n\t"							\
-  "mov\tr4,%5\n\t"							\
-  __syscall(name)							\
-  "mov\t%0,r0"								\
-  	: "=r" (__res)							\
-  	: "r" ((long)(arg1)),"r" ((long)(arg2)),                        \
-	  "r" ((long)(arg3)),"r" ((long)(arg4)),                        \
-	  "r" ((long)(arg5))                   	                        \
-  	: "r0","r1","r2","r3","r4","lr");				\
-  __syscall_return(type,__res);						\
+#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+	  type5,arg5) \
+type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
+{ \
+return (type) (INLINE_SYSCALL(name, 5, arg1, arg2, arg3, arg4, arg5)); \
 }
 
+#undef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...)			\
+  ({ unsigned int _sys_result;					\
+     {								\
+       register int _a1 asm ("a1");				\
+       LOAD_ARGS_##nr (args)					\
+       asm volatile ("swi	%1	@ syscall " #name	\
+		     : "=r" (_a1)				\
+		     : "i" (SYS_ify(name)) ASM_ARGS_##nr	\
+		     : "a1", "memory");				\
+       _sys_result = _a1;					\
+     }								\
+     if (_sys_result >= (unsigned int) -4095)			\
+       {							\
+	 __set_errno (-_sys_result);				\
+	 _sys_result = (unsigned int) -1;			\
+       }							\
+     (int) _sys_result; })
+
+#define LOAD_ARGS_0()
+#define ASM_ARGS_0
+#define LOAD_ARGS_1(a1)				\
+  _a1 = (int) (a1);				\
+  LOAD_ARGS_0 ()
+#define ASM_ARGS_1	ASM_ARGS_0, "r" (_a1)
+#define LOAD_ARGS_2(a1, a2)			\
+  register int _a2 asm ("a2") = (int) (a2);	\
+  LOAD_ARGS_1 (a1)
+#define ASM_ARGS_2	ASM_ARGS_1, "r" (_a2)
+#define LOAD_ARGS_3(a1, a2, a3)			\
+  register int _a3 asm ("a3") = (int) (a3);	\
+  LOAD_ARGS_2 (a1, a2)
+#define ASM_ARGS_3	ASM_ARGS_2, "r" (_a3)
+#define LOAD_ARGS_4(a1, a2, a3, a4)		\
+  register int _a4 asm ("a4") = (int) (a4);	\
+  LOAD_ARGS_3 (a1, a2, a3)
+#define ASM_ARGS_4	ASM_ARGS_3, "r" (_a4)
+#define LOAD_ARGS_5(a1, a2, a3, a4, a5)		\
+  register int _v1 asm ("v1") = (int) (a5);	\
+  LOAD_ARGS_4 (a1, a2, a3, a4)
+#define ASM_ARGS_5	ASM_ARGS_4, "r" (_v1)
+#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6)	\
+  register int _v2 asm ("v2") = (int) (a6);	\
+  LOAD_ARGS_5 (a1, a2, a3, a4, a5)
+#define ASM_ARGS_6	ASM_ARGS_5, "r" (_v2)
+#define LOAD_ARGS_7(a1, a2, a3, a4, a5, a6, a7)	\
+  register int _v3 asm ("v3") = (int) (a7);	\
+  LOAD_ARGS_6 (a1, a2, a3, a4, a5, a6)
+#define ASM_ARGS_7	ASM_ARGS_6, "r" (_v3)
+
+#endif /* __ASSEMBLER__ */
+#endif /* _BITS_SYSCALLS_H */
diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile
index 3e6a5136d..b9a8319cb 100644
--- a/libc/sysdeps/linux/common/Makefile
+++ b/libc/sysdeps/linux/common/Makefile
@@ -34,7 +34,7 @@ CSRC=	waitpid.c statfix.c getdnnm.c gethstnm.c getcwd.c \
 	wait3.c setpgrp.c getdtablesize.c create_module.c ptrace.c \
 	cmsg_nxthdr.c statfix64.c longjmp.c open64.c ftruncate64.c \
 	truncate64.c getrlimit64.c setrlimit64.c creat64.c mmap64.c \
-	pread_write.c
+	llseek.c pread_write.c _exit.c mknod.c setuid.c sync.c
 ifneq ($(strip $(EXCLUDE_BRK)),true)
 CSRC+=sbrk.c
 endif
diff --git a/libc/sysdeps/linux/common/ftruncate64.c b/libc/sysdeps/linux/common/ftruncate64.c
index 01cdcd7d3..fb95450c1 100644
--- a/libc/sysdeps/linux/common/ftruncate64.c
+++ b/libc/sysdeps/linux/common/ftruncate64.c
@@ -20,20 +20,23 @@
 #include <sys/syscall.h>
 
 #if defined __UCLIBC_HAVE_LFS__ && defined __NR_ftruncate64
+#ifndef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...) __syscall_ftruncate64 (args)
+#define __NR___syscall_ftruncate64 __NR_ftruncate64
+static inline _syscall3(int, __syscall_ftruncate64, int, fd, int, high_length, int, low_length);
+#endif
+
+
 #if __WORDSIZE == 64
 /* For a 64 bit machine, life is simple... */
 _syscall2(int, ftruncate64, int, fd, __off64_t, length);
 #elif __WORDSIZE == 32
-#define __NR___ftruncate64 __NR_ftruncate64
-static inline _syscall3(int, __ftruncate64, int, fd, 
-	uint32_t, length_first_half, 
-	uint32_t, length_second_half);
 /* The exported ftruncate64 function.  */
 int ftruncate64 (int fd, __off64_t length)
 {
     uint32_t low = length & 0xffffffff;
     uint32_t high = length >> 32;
-    return __ftruncate64(fd, __LONG_LONG_PAIR (high, low));
+    return INLINE_SYSCALL(ftruncate64, 3, fd, __LONG_LONG_PAIR (high, low));
 }
 #else
 #error Your machine is not 64 bit or 32 bit, I am dazed and confused.
diff --git a/libc/sysdeps/linux/common/getcwd.c b/libc/sysdeps/linux/common/getcwd.c
index 1ec00a36e..9cdd84b47 100644
--- a/libc/sysdeps/linux/common/getcwd.c
+++ b/libc/sysdeps/linux/common/getcwd.c
@@ -8,8 +8,12 @@
 #include <sys/syscall.h>
 
 #ifdef __NR_getcwd
-#define __NR___getcwd __NR_getcwd
-static inline _syscall2(int, __getcwd, char *, buf, unsigned long, size);
+
+#ifndef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...) __syscall_getcwd (args)
+#define __NR___syscall_getcwd __NR_getcwd
+static inline _syscall2(int, __syscall_getcwd, char *, buf, unsigned long, size);
+#endif
 
 char *getcwd(char *buf, int size)
 {
@@ -31,7 +35,7 @@ char *getcwd(char *buf, int size)
 		if (buf == NULL)
 			return NULL;
 	}
-	ret = __getcwd(buf, size);
+	ret = INLINE_SYSCALL(getcwd, 2, buf, size);
 	if (ret < 0) {
 	    if (allocbuf) {
 		free(allocbuf);
diff --git a/libc/sysdeps/linux/common/getpagesize.c b/libc/sysdeps/linux/common/getpagesize.c
index 362dd7b2b..859338003 100644
--- a/libc/sysdeps/linux/common/getpagesize.c
+++ b/libc/sysdeps/linux/common/getpagesize.c
@@ -21,7 +21,7 @@
 #include <sys/param.h>
 
 /* Return the system page size.  */
-int __getpagesize()
+int __getpagesize(void)
 {
 #ifdef	EXEC_PAGESIZE
   return EXEC_PAGESIZE;
diff --git a/libc/sysdeps/linux/common/pread_write.c b/libc/sysdeps/linux/common/pread_write.c
index 4aa1fdf7e..61d1bee4f 100644
--- a/libc/sysdeps/linux/common/pread_write.c
+++ b/libc/sysdeps/linux/common/pread_write.c
@@ -23,41 +23,72 @@
  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 
+#define _GNU_SOURCE
+#define _LARGEFILE64_SOURCE
 #include <features.h>
-#if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS != 64 
-#undef _FILE_OFFSET_BITS
-#define _FILE_OFFSET_BITS   64
-#endif
-#ifndef __USE_LARGEFILE64
-# define __USE_LARGEFILE64      1
-#endif
+#undef __OPTIMIZE__
 /* We absolutely do _NOT_ want interfaces silently
- * renamed under us or very bad things will happen... */
+ *  *  * renamed under us or very bad things will happen... */
 #ifdef __USE_FILE_OFFSET64
 # undef __USE_FILE_OFFSET64
 #endif
 
+
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/syscall.h>
-#define _XOPEN_SOURCE 500
 #include <unistd.h>
 
 #ifdef __NR_pread
-#define __NR___syscall_pread __NR_pread
-static inline _syscall5(ssize_t, __syscall_pread, int, fd, void *, buf, size_t, count, 
-		__off_t, offset_hi, __off_t, offset_lo);
+#define __NR___libc_pread __NR_pread
+_syscall4(ssize_t, __libc_pread, int, fd, void *, buf, size_t, count, off_t, offset);
+weak_alias (__libc_pread, pread)
+#if defined __UCLIBC_HAVE_LFS__ 
+
+#ifndef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...) __syscall_pread (args)
+#define __NR___syscall_pread __NR_pread 
+static inline _syscall5(ssize_t, __syscall_pread, int, fd, void *, buf, 
+		size_t, count, off_t, offset_hi, off_t, offset_lo);
 #endif
 
+ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
+{ 
+	  return(INLINE_SYSCALL (pread, 5, fd, buf, 
+				  count, __LONG_LONG_PAIR ((off_t) (offset >> 32), (off_t) (offset & 0xffffffff))));
+}
+weak_alias (__libc_pread64, pread64)
+#endif /* __UCLIBC_HAVE_LFS__  */
+#endif /* __NR_pread */
+
+
 #ifdef __NR_pwrite
-#define __NR___syscall_pwrite __NR_pwrite
-static inline _syscall5(ssize_t, __syscall_pwrite, int, fd, const void *, buf, size_t, count, 
-		__off_t, offset_hi, __off_t, offset_lo);
+#define __NR___libc_pwrite __NR_pwrite
+_syscall4(ssize_t, __libc_pwrite, int, fd, const void *, buf, size_t, count, off_t, offset);
+weak_alias (__libc_pwrite, pwrite)
+#if defined __UCLIBC_HAVE_LFS__ 
+
+#ifndef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...) __syscall_write (args)
+#define __NR___syscall_write __NR_write 
+static inline _syscall5(ssize_t, __syscall_write, int, fd, const void *, buf, 
+		size_t, count, off_t, offset_hi, off_t, offset_lo);
 #endif
 
+ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
+{ 
+	return(INLINE_SYSCALL (pwrite, 5, fd, buf, 
+				count, __LONG_LONG_PAIR ((off_t) (offset >> 32), (off_t) (offset & 0xffffffff))));
+}
+weak_alias (__libc_pwrite64, pwrite64)
+#endif /* __UCLIBC_HAVE_LFS__  */
+#endif /* __NR_pwrite */
+
 
+
+#if ! defined __NR_pread || ! defined __NR_pwrite
 static ssize_t __fake_pread_write(int fd, void *buf, 
-		size_t count, __off_t offset, int do_pwrite)
+		size_t count, off_t offset, int do_pwrite)
 {
 	int save_errno;
 	ssize_t result;
@@ -69,7 +100,7 @@ static ssize_t __fake_pread_write(int fd, void *buf,
 		return -1;
 
 	/* Set to wanted position.  */
-	if (lseek (fd, offset, SEEK_SET) == (__off_t) -1)
+	if (lseek (fd, offset, SEEK_SET) == (off_t) -1)
 		return -1;
 
 	if (do_pwrite==1) {
@@ -83,7 +114,7 @@ static ssize_t __fake_pread_write(int fd, void *buf,
 	/* Now we have to restore the position.  If this fails we 
 	 * have to return this as an error.  */
 	save_errno = errno;
-	if (lseek(fd, old_offset, SEEK_SET) == (__off_t) -1)
+	if (lseek(fd, old_offset, SEEK_SET) == (off_t) -1)
 	{
 		if (result == -1)
 			__set_errno(save_errno);
@@ -93,47 +124,6 @@ static ssize_t __fake_pread_write(int fd, void *buf,
 	return(result);
 }
 
-ssize_t __libc_pread(int fd, void *buf, size_t count, __off_t offset)
-{
-#ifndef __NR_pread
-	return(__fake_pread_write(fd, buf, count, offset, 0));
-#else
-	ssize_t result;
-
-	/* First try the syscall.  */
-	result = __syscall_pread(fd, buf, count, __LONG_LONG_PAIR(0, offset));
-
-	/* Bummer.  Syscall failed or is missing.  Fake it */
-	if (result == -1 && errno == ENOSYS) {
-		result = __fake_pread_write(fd, buf, count, offset, 0);
-	}
-#endif
-	return result;
-}
-weak_alias (__libc_pread, pread)
-
-ssize_t __libc_pwrite(int fd, const void *buf, size_t count, __off_t offset)
-{
-#ifndef __NR_pwrite
-	return(__fake_pread_write(fd, buf, count, offset, 1));
-#else
-	ssize_t result;
-
-	/* First try the syscall.  */
-	result = __syscall_pwrite(fd, buf, count, __LONG_LONG_PAIR(0, offset));
-
-	/* Bummer.  Syscall failed or is missing.  Fake it */
-	if (result == -1 && errno == ENOSYS) {
-		result = __fake_pread_write(fd, (void*)buf, count, offset, 1);
-	}
-#endif
-	return result;
-}
-weak_alias (__libc_pwrite, pwrite)
-
-
-
-
 #if defined __UCLIBC_HAVE_LFS__ 
 static ssize_t __fake_pread_write64(int fd, void *buf, 
 		size_t count, off64_t offset, int do_pwrite)
@@ -169,45 +159,39 @@ static ssize_t __fake_pread_write64(int fd, void *buf,
 	__set_errno (save_errno);
 	return result;
 }
+#endif /* __UCLIBC_HAVE_LFS__  */
+#endif /*  ! defined __NR_pread || ! defined __NR_pwrite */
+
+#ifndef __NR_pread
+ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
+{
+	return(__fake_pread_write(fd, buf, count, offset, 0));
+}
+weak_alias (__libc_pread, pread)
 
+#if defined __UCLIBC_HAVE_LFS__ 
 ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
 { 
-#ifndef __NR_pread
 	return(__fake_pread_write64(fd, buf, count, offset, 0));
-#else
-	ssize_t result;
-	/* First try the syscall.  */
-	result = __syscall_pread(fd, buf, count, 
-			__LONG_LONG_PAIR((__off_t) (offset >> 32), (__off_t) (offset & 0xffffffff)));
-
-	/* Bummer.  Syscall failed or is missing.  Fake it */
-	if (result == -1 && errno == ENOSYS) {
-		result = __fake_pread_write64(fd, buf, count, offset, 0); 
-	}
-	return result;
-#endif
 }
 weak_alias (__libc_pread64, pread64)
+#endif /* __UCLIBC_HAVE_LFS__  */
+#endif /* ! __NR_pread */
+
+
+#ifndef __NR_pwrite
+ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
+{
+	return(__fake_pread_write(fd, buf, count, offset, 1));
+}
+weak_alias (__libc_pwrite, pwrite)
 
+#if defined __UCLIBC_HAVE_LFS__ 
 ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
 { 
-#ifndef __NR_pwrite
 	return(__fake_pread_write64(fd, (void*)buf, count, offset, 1));
-#else
-	ssize_t result;
-
-	/* First try the syscall.  */
-	result = __syscall_pwrite(fd, buf, count, 
-			__LONG_LONG_PAIR((__off_t) (offset >> 32), (__off_t) (offset & 0xffffffff)));
-
-	/* Bummer.  Syscall failed or is missing.  Fake it */
-	if (result == -1 && errno == ENOSYS) {
-		result = __fake_pread_write64(fd, (void*)buf, count, offset, 1);
-	}
-	return result;
-#endif
 }
 weak_alias (__libc_pwrite64, pwrite64)
-
-#endif
+#endif /* __UCLIBC_HAVE_LFS__  */
+#endif /* ! __NR_pwrite */
 
diff --git a/libc/sysdeps/linux/common/syscalls.c b/libc/sysdeps/linux/common/syscalls.c
index 1b63c3dba..4acd0401c 100644
--- a/libc/sysdeps/linux/common/syscalls.c
+++ b/libc/sysdeps/linux/common/syscalls.c
@@ -22,18 +22,23 @@
  *
  */
 
+#define _GNU_SOURCE
+#define _LARGEFILE64_SOURCE
 #include <features.h>
+#undef __OPTIMIZE__
+/* We absolutely do _NOT_ want interfaces silently
+ *  *  * renamed under us or very bad things will happen... */
+#ifdef __USE_FILE_OFFSET64
+# undef __USE_FILE_OFFSET64
+#endif
+
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/syscall.h>
 
+
 //#define __NR_exit             1
-#ifdef L__exit
-/* Do not include unistd.h, so gcc doesn't whine about 
- * _exit returning.  It really doesn't return... */
-#define __NR__exit __NR_exit
-_syscall1(void, _exit, int, status);
-#endif
+//See _exit.c
 
 //#define __NR_fork             2
 #ifdef L___libc_fork
@@ -150,23 +155,7 @@ time_t time (time_t *t)
 #endif
 
 //#define __NR_mknod            14
-#ifdef L_mknod
-#include <unistd.h>
-extern int mknod(const char *pathname, mode_t mode, dev_t dev);
-_syscall3(int, mknod, const char *, pathname, mode_t, mode, dev_t, dev);
-
-int __xmknod (int version, const char * path, mode_t mode, dev_t *dev)
-{
-	switch(version)
-	{
-		case 1:
-			return mknod (path, mode, *dev);
-		default:
-			__set_errno(EINVAL);
-			return -1;
-	}
-}
-#endif
+//See mknod.c
 
 //#define __NR_chmod            15
 #ifdef L_chmod
@@ -198,10 +187,6 @@ _syscall3(int, lchown, const char *, path, uid_t, owner, gid_t, group);
 #define __NR___libc_lseek __NR_lseek
 _syscall3(__off_t, __libc_lseek, int, fildes, __off_t, offset, int, whence);
 weak_alias(__libc_lseek, lseek)
-#ifndef __NR__llseek
-weak_alias(__libc_lseek, llseek)
-weak_alias(__libc_lseek, lseek64)
-#endif
 #endif
 
 //#define __NR_getpid           20
@@ -231,20 +216,7 @@ _syscall1(int, umount, const char *, specialfile);
 #endif
 
 //#define __NR_setuid           23
-#ifdef L___setuid
-#define __NR___setuid __NR_setuid
-#include <unistd.h>
-static inline 
-_syscall1(int, __setuid, uid_t, uid);
-int setuid(uid_t uid)
-{
-	if (uid == (uid_t) ~0) {
-		__set_errno (EINVAL);
-		return -1;
-	}
-	return(__setuid(uid));
-}
-#endif
+// See setuid.c
 
 //#define __NR_getuid           24
 #ifdef L_getuid
@@ -422,10 +394,7 @@ int nice (int incr)
 //#define __NR_ftime            35
 
 //#define __NR_sync             36
-#ifdef L_sync
-#include <unistd.h>
-_syscall0(void, sync);
-#endif
+//See sync.c
 
 //#define __NR_kill             37
 #ifdef L_kill
@@ -723,8 +692,8 @@ int setrlimit (__rlimit_resource_t resource, const struct rlimit *rlimits)
 #else /* We don't need to wrap setrlimit */
 #ifdef L_setrlimit
 #include <unistd.h>
-#include <sys/resource.h>
-_syscall2(int, setrlimit, int, resource, const struct rlimit *, rlim);
+struct rlimit;
+_syscall2(int, setrlimit, unsigned int, resource, const struct rlimit *, rlim);
 #endif
 #endif /* __NR_setrlimit */
 
@@ -1240,30 +1209,7 @@ _syscall1(int, setfsgid, gid_t, gid);
 #endif
 
 //#define __NR__llseek          140
-#ifdef L__llseek
-#ifdef __UCLIBC_HAVE_LFS__
-#ifdef __NR__llseek
-extern int _llseek(int fd, __off_t offset_hi, __off_t offset_lo, 
-		__loff_t *result, int whence);
-
-_syscall5(int, _llseek, int, fd, __off_t, offset_hi, __off_t, offset_lo, 
-		__loff_t *, result, int, whence);
-
-__loff_t __libc_lseek64(int fd, __loff_t offset, int whence)
-{
-	int ret;
-	__loff_t result;
-
-	ret = _llseek(fd, __LONG_LONG_PAIR((__off_t) (offset >> 32), 
-				(__off_t) (offset & 0xffffffff)), &result, whence);
-
-	return ret ? (__loff_t) ret : result;
-}
-weak_alias(__libc_lseek64, llseek);
-weak_alias(__libc_lseek64, lseek64);
-#endif
-#endif
-#endif
+//See llseek.c
 
 //#define __NR_getdents         141
 #ifdef L_getdents
diff --git a/libc/sysdeps/linux/common/truncate64.c b/libc/sysdeps/linux/common/truncate64.c
index e6b4023d7..3205f748d 100644
--- a/libc/sysdeps/linux/common/truncate64.c
+++ b/libc/sysdeps/linux/common/truncate64.c
@@ -20,20 +20,22 @@
 #include <sys/syscall.h>
 
 #if defined __UCLIBC_HAVE_LFS__ && defined __NR_truncate64
+#ifndef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...) __syscall_truncate64 (args)
+#define __NR___syscall_truncate64 __NR_truncate64
+static inline _syscall3(int, __syscall_truncate64, const char *, path, int, high_length, int, low_length);
+#endif
+
 #if __WORDSIZE == 64
 /* For a 64 bit machine, life is simple... */
 _syscall2(int, truncate64, const char *, path, __off64_t, length);
 #elif __WORDSIZE == 32
-#define __NR___truncate64 __NR_truncate64
-static inline _syscall3(int, __truncate64, const char *, path,
-	uint32_t, length_first_half, 
-	uint32_t, length_second_half);
 /* The exported truncate64 function.  */
 int truncate64 (const char * path, __off64_t length)
 {
     uint32_t low = length & 0xffffffff;
     uint32_t high = length >> 32;
-    return __truncate64(path, __LONG_LONG_PAIR (high, low));
+    return INLINE_SYSCALL(truncate64, 3, path, __LONG_LONG_PAIR (high, low));
 }
 #else
 #error Your machine is not 64 bit or 32 bit, I am dazed and confused.
diff --git a/libc/sysdeps/linux/h8300/bits/syscalls.h b/libc/sysdeps/linux/h8300/bits/syscalls.h
index 5c30e2193..da6a6d43e 100644
--- a/libc/sysdeps/linux/h8300/bits/syscalls.h
+++ b/libc/sysdeps/linux/h8300/bits/syscalls.h
@@ -1,10 +1,15 @@
-/*
- * nothing needed here until we want pthread support or similar
- */
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
+#endif
 
 #include <features.h>
-/* Do something very evil for now.  Until we include our out syscall
+
+/* Do something very evil for now.  Until we create our own syscall
  * macros, short circuit bits/syscall.h  and use asm/unistd.h instead */
 #define _BITS_SYSCALL_H
 #include <asm/unistd.h>
 
+#endif /* _BITS_SYSCALLS_H */
+
diff --git a/libc/sysdeps/linux/i386/bits/syscalls.h b/libc/sysdeps/linux/i386/bits/syscalls.h
index 940e9db50..cb70d15e3 100644
--- a/libc/sysdeps/linux/i386/bits/syscalls.h
+++ b/libc/sysdeps/linux/i386/bits/syscalls.h
@@ -1,147 +1,95 @@
-/* Unlike the asm/unistd.h kernel header file (which this is partly based on),
- * this file must be able to cope with PIC and non-PIC code.  For some arches
- * there is no difference.  For x86 (which has far too few registers) there is
- * a difference.   Regardless, including asm/unistd.h is hereby officially
- * forbidden.  Don't do it.  It is bad for you.  */ 
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscall.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/syscall.h>
 
-#ifndef __UCLIBC_USE_UNIFIED_SYSCALL__
+#ifndef __set_errno
+# define __set_errno(val) (*__errno_location ()) = (val)
+#endif
 
-#undef __syscall_return
-#define __syscall_return(type, res) \
-do { \
-	if ((unsigned long)(res) >= (unsigned long)(-125)) { \
-		errno = -(res); \
-		res = -1; \
-	} \
-	return (type) (res); \
-} while (0)
+/*
+   Some of the sneaky macros in the code were taken from 
+   glibc-2.2.5/sysdeps/unix/sysv/linux/i386/sysdep.h
+*/
+
+#ifndef __ASSEMBLER__
+
+/* We need some help from the assembler to generate optimal code.  We
+   define some macros here which later will be used.  */
+asm (".L__X'%ebx = 1\n\t"
+     ".L__X'%ecx = 2\n\t"
+     ".L__X'%edx = 2\n\t"
+     ".L__X'%eax = 3\n\t"
+     ".L__X'%esi = 3\n\t"
+     ".L__X'%edi = 3\n\t"
+     ".L__X'%ebp = 3\n\t"
+     ".L__X'%esp = 3\n\t"
+     ".macro bpushl name reg\n\t"
+     ".if 1 - \\name\n\t"
+     ".if 2 - \\name\n\t"
+     "pushl %ebx\n\t"
+     ".else\n\t"
+     "xchgl \\reg, %ebx\n\t"
+     ".endif\n\t"
+     ".endif\n\t"
+     ".endm\n\t"
+     ".macro bpopl name reg\n\t"
+     ".if 1 - \\name\n\t"
+     ".if 2 - \\name\n\t"
+     "popl %ebx\n\t"
+     ".else\n\t"
+     "xchgl \\reg, %ebx\n\t"
+     ".endif\n\t"
+     ".endif\n\t"
+     ".endm\n\t"
+     ".macro bmovl name reg\n\t"
+     ".if 1 - \\name\n\t"
+     ".if 2 - \\name\n\t"
+     "movl \\reg, %ebx\n\t"
+     ".endif\n\t"
+     ".endif\n\t"
+     ".endm\n\t");
 
 
 #undef _syscall0
 #define _syscall0(type,name) \
 type name(void) \
 { \
-long __res; \
-__asm__ volatile ("int $0x80" \
-	: "=a" (__res) \
-	: "0" (__NR_##name)); \
-__syscall_return(type,__res); \
+return (type) (INLINE_SYSCALL(name, 0)); \
 }
 
-
-#if defined(__PIC__)
-
-/*
- * PIC uses %ebx, so we need to save it during system calls
- */
-
 #undef _syscall1
 #define _syscall1(type,name,type1,arg1) \
 type name(type1 arg1) \
 { \
-long __res; \
-__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
-	: "=a" (__res) \
-	: "0" (__NR_##name),"r" ((long)(arg1))); \
-__syscall_return(type,__res); \
+return (type) (INLINE_SYSCALL(name, 1, arg1)); \
 }
 
 #undef _syscall2
 #define _syscall2(type,name,type1,arg1,type2,arg2) \
 type name(type1 arg1,type2 arg2) \
 { \
-long __res; \
-__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
-	: "=a" (__res) \
-	: "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2))); \
-__syscall_return(type,__res); \
+return (type) (INLINE_SYSCALL(name, 2, arg1, arg2)); \
 }
 
 #undef _syscall3
 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
 type name(type1 arg1,type2 arg2,type3 arg3) \
 { \
-long __res; \
-__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
-	: "=a" (__res) \
-	: "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2)), \
-		"d" ((long)(arg3))); \
-__syscall_return(type,__res); \
+return (type) (INLINE_SYSCALL(name, 3, arg1, arg2, arg3)); \
 }
 
 #undef _syscall4
 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
 type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
 { \
-long __res; \
-__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
-	: "=a" (__res) \
-	: "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2)), \
-	  "d" ((long)(arg3)),"S" ((long)(arg4))); \
-__syscall_return(type,__res); \
-}
-
-#undef _syscall5
-#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
-          type5,arg5) \
-type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
-{ \
-long __res; \
-__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
-	: "=a" (__res) \
-	: "0" (__NR_##name),"m" ((long)(arg1)),"c" ((long)(arg2)), \
-	  "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \
-__syscall_return(type,__res); \
-}
-
-#else  /* not doing __PIC__ */
-
-#undef _syscall1
-#define _syscall1(type,name,type1,arg1) \
-type name(type1 arg1) \
-{ \
-long __res; \
-__asm__ volatile ("int $0x80" \
-	: "=a" (__res) \
-	: "0" (__NR_##name),"b" ((long)(arg1))); \
-__syscall_return(type,__res); \
-}
-
-#undef _syscall2
-#define _syscall2(type,name,type1,arg1,type2,arg2) \
-type name(type1 arg1,type2 arg2) \
-{ \
-long __res; \
-__asm__ volatile ("int $0x80" \
-	: "=a" (__res) \
-	: "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2))); \
-__syscall_return(type,__res); \
-}
-
-#undef _syscall3
-#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
-type name(type1 arg1,type2 arg2,type3 arg3) \
-{ \
-long __res; \
-__asm__ volatile ("int $0x80" \
-	: "=a" (__res) \
-	: "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
-		  "d" ((long)(arg3))); \
-__syscall_return(type,__res); \
-}
-
-#undef _syscall4
-#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
-long __res; \
-__asm__ volatile ("int $0x80" \
-	: "=a" (__res) \
-	: "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
-	  "d" ((long)(arg3)),"S" ((long)(arg4))); \
-__syscall_return(type,__res); \
+return (type) (INLINE_SYSCALL(name, 4, arg1, arg2, arg3, arg4)); \
 } 
 
 #undef _syscall5
@@ -149,50 +97,55 @@ __syscall_return(type,__res); \
 	  type5,arg5) \
 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
 { \
-long __res; \
-__asm__ volatile ("int $0x80" \
-	: "=a" (__res) \
-	: "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
-	  "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \
-__syscall_return(type,__res); \
+return (type) (INLINE_SYSCALL(name, 5, arg1, arg2, arg3, arg4, arg5)); \
 }
 
-
-#endif /* __PIC__ */
-
-
-#else
-
-#define unified_syscall_body(name) \
-__asm__ ( \
-".text\n.align 4\n.global "###name"\n.type "###name",@function\n" \
-#name":\nmovb $"__STR_NR_##name \
-",%al;\n jmp __uClibc_syscall\n.Lfe1"###name":\n.size "###name \
-",.Lfe1"###name"-"###name \
-)
-
-#undef _syscall0
-#define _syscall0(type,name) \
-unified_syscall_body(name)
-
-#undef _syscall1
-#define _syscall1(type,name,type1,arg1) \
-unified_syscall_body(name)
-
-#undef _syscall2
-#define _syscall2(type,name,type1,arg1,type2,arg2) \
-unified_syscall_body(name)
-
-#undef _syscall3
-#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
-unified_syscall_body(name)
-
-#undef _syscall4
-#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
-unified_syscall_body(name)
-
-#undef _syscall5
-#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
-unified_syscall_body(name)
-
-#endif
+#define INLINE_SYSCALL(name, nr, args...) \
+  ({									      \
+    unsigned int resultvar;						      \
+    asm volatile (							      \
+    LOADARGS_##nr							      \
+    "movl %1, %%eax\n\t"						      \
+    "int $0x80\n\t"							      \
+    RESTOREARGS_##nr							      \
+    : "=a" (resultvar)							      \
+    : "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc");		      \
+    if (resultvar >= 0xfffff001)					      \
+      {									      \
+	__set_errno (-resultvar);					      \
+	resultvar = 0xffffffff;						      \
+      }									      \
+    (int) resultvar; })
+
+#define LOADARGS_0
+#define LOADARGS_1 \
+    "bpushl .L__X'%k2, %k2\n\t"						      \
+    "bmovl .L__X'%k2, %k2\n\t"
+#define LOADARGS_2	LOADARGS_1
+#define LOADARGS_3	LOADARGS_1
+#define LOADARGS_4	LOADARGS_1
+#define LOADARGS_5	LOADARGS_1
+
+#define RESTOREARGS_0
+#define RESTOREARGS_1 \
+    "bpopl .L__X'%k2, %k2\n\t"
+#define RESTOREARGS_2	RESTOREARGS_1
+#define RESTOREARGS_3	RESTOREARGS_1
+#define RESTOREARGS_4	RESTOREARGS_1
+#define RESTOREARGS_5	RESTOREARGS_1
+
+#define ASMFMT_0()
+#define ASMFMT_1(arg1) \
+	, "acdSD" (arg1)
+#define ASMFMT_2(arg1, arg2) \
+	, "adCD" (arg1), "c" (arg2)
+#define ASMFMT_3(arg1, arg2, arg3) \
+	, "aCD" (arg1), "c" (arg2), "d" (arg3)
+#define ASMFMT_4(arg1, arg2, arg3, arg4) \
+	, "aD" (arg1), "c" (arg2), "d" (arg3), "S" (arg4)
+#define ASMFMT_5(arg1, arg2, arg3, arg4, arg5) \
+	, "a" (arg1), "c" (arg2), "d" (arg3), "S" (arg4), "D" (arg5)
+
+
+#endif /* __ASSEMBLER__ */
+#endif /* _BITS_SYSCALLS_H */
diff --git a/libc/sysdeps/linux/i960/bits/syscalls.h b/libc/sysdeps/linux/i960/bits/syscalls.h
index 5c30e2193..da6a6d43e 100644
--- a/libc/sysdeps/linux/i960/bits/syscalls.h
+++ b/libc/sysdeps/linux/i960/bits/syscalls.h
@@ -1,10 +1,15 @@
-/*
- * nothing needed here until we want pthread support or similar
- */
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
+#endif
 
 #include <features.h>
-/* Do something very evil for now.  Until we include our out syscall
+
+/* Do something very evil for now.  Until we create our own syscall
  * macros, short circuit bits/syscall.h  and use asm/unistd.h instead */
 #define _BITS_SYSCALL_H
 #include <asm/unistd.h>
 
+#endif /* _BITS_SYSCALLS_H */
+
diff --git a/libc/sysdeps/linux/m68k/bits/syscalls.h b/libc/sysdeps/linux/m68k/bits/syscalls.h
index 5c30e2193..da6a6d43e 100644
--- a/libc/sysdeps/linux/m68k/bits/syscalls.h
+++ b/libc/sysdeps/linux/m68k/bits/syscalls.h
@@ -1,10 +1,15 @@
-/*
- * nothing needed here until we want pthread support or similar
- */
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
+#endif
 
 #include <features.h>
-/* Do something very evil for now.  Until we include our out syscall
+
+/* Do something very evil for now.  Until we create our own syscall
  * macros, short circuit bits/syscall.h  and use asm/unistd.h instead */
 #define _BITS_SYSCALL_H
 #include <asm/unistd.h>
 
+#endif /* _BITS_SYSCALLS_H */
+
diff --git a/libc/sysdeps/linux/mips/Makefile b/libc/sysdeps/linux/mips/Makefile
index a3fe845e8..4f6b806c9 100644
--- a/libc/sysdeps/linux/mips/Makefile
+++ b/libc/sysdeps/linux/mips/Makefile
@@ -30,7 +30,7 @@ TARGET_MACHINE_TYPE=$(shell $(CC) -dumpmachine)
 CRT0=crt0.S
 CRT0_OBJ=$(patsubst %.S,%.o, $(CRT0))
 
-SSRC=bsd-_setjmp.S bsd-setjmp.S setjmp.S clone.S
+SSRC=bsd-_setjmp.S bsd-setjmp.S setjmp.S clone.S fork.S __uClibc_syscall.S
 SOBJS=$(patsubst %.S,%.o, $(SSRC))
 
 CSRC=__longjmp.c  brk.c vfork.c setjmp_aux.c _mmap.c pipe.c __syscall_error.c
diff --git a/libc/sysdeps/linux/mips/bits/syscalls.h b/libc/sysdeps/linux/mips/bits/syscalls.h
index 5c30e2193..e1981445f 100644
--- a/libc/sysdeps/linux/mips/bits/syscalls.h
+++ b/libc/sysdeps/linux/mips/bits/syscalls.h
@@ -1,10 +1,14 @@
-/*
- * nothing needed here until we want pthread support or similar
- */
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
+#endif
 
 #include <features.h>
-/* Do something very evil for now.  Until we include our out syscall
+
+/* Do something very evil for now.  Until we create our own syscall
  * macros, short circuit bits/syscall.h  and use asm/unistd.h instead */
 #define _BITS_SYSCALL_H
 #include <asm/unistd.h>
 
+#endif /* _BITS_SYSCALLS_H */
diff --git a/libc/sysdeps/linux/mips/setjmp_aux.c b/libc/sysdeps/linux/mips/setjmp_aux.c
index 1cd2b2155..b957cea33 100644
--- a/libc/sysdeps/linux/mips/setjmp_aux.c
+++ b/libc/sysdeps/linux/mips/setjmp_aux.c
@@ -24,6 +24,8 @@
    pointer.  We do things this way because it's difficult to reliably
    access them in C.  */
 
+extern int __sigjmp_save (sigjmp_buf, int);
+
 int
 __sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp)
 {
diff --git a/libc/sysdeps/linux/powerpc/bits/syscalls.h b/libc/sysdeps/linux/powerpc/bits/syscalls.h
index 93c0f3f48..6efff713e 100644
--- a/libc/sysdeps/linux/powerpc/bits/syscalls.h
+++ b/libc/sysdeps/linux/powerpc/bits/syscalls.h
@@ -1,152 +1,20 @@
-#include <asm/unistd.h>
-
-#undef __NR
-#define __NR(n)	#n
-
-#undef __syscall_return
-#define __syscall_return(type) \
-	return (__sc_err & 0x10000000 ? errno = __sc_ret, __sc_ret = -1 : 0), \
-	       (type) __sc_ret
-
-#undef __syscall_clobbers
-#define __syscall_clobbers \
-	"r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
-
-#undef _syscall0
-#define _syscall0(type,name)						\
-type name(void)								\
-{									\
-	unsigned long __sc_ret, __sc_err;				\
-	{								\
-		register unsigned long __sc_0 __asm__ ("r0");		\
-		register unsigned long __sc_3 __asm__ ("r3");		\
-									\
-		__sc_0 = __NR_##name;					\
-		__asm__ __volatile__					\
-			("sc           \n\t"				\
-			 "mfcr %1      "				\
-			: "=&r" (__sc_3), "=&r" (__sc_0)		\
-			: "0"   (__sc_3), "1"   (__sc_0)		\
-			: __syscall_clobbers);				\
-		__sc_ret = __sc_3;					\
-		__sc_err = __sc_0;					\
-	}								\
-	__syscall_return (type);					\
-}
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
+#endif
 
-#undef _syscall1
-#define _syscall1(type,name,type1,arg1)					\
-type name(type1 arg1)							\
-{									\
-	unsigned long __sc_ret, __sc_err;				\
-	{								\
-		register unsigned long __sc_0 __asm__ ("r0");		\
-		register unsigned long __sc_3 __asm__ ("r3");		\
-									\
-		__sc_3 = (unsigned long) (arg1);			\
-		__sc_0 = __NR_##name;					\
-		__asm__ __volatile__					\
-			("sc           \n\t"				\
-			 "mfcr %1      "				\
-			: "=&r" (__sc_3), "=&r" (__sc_0)		\
-			: "0"   (__sc_3), "1"   (__sc_0)		\
-			: __syscall_clobbers);				\
-		__sc_ret = __sc_3;					\
-		__sc_err = __sc_0;					\
-	}								\
-	__syscall_return (type);					\
-}
+#include <features.h>
 
-#undef _syscall2
-#define _syscall2(type,name,type1,arg1,type2,arg2)			\
-type name(type1 arg1, type2 arg2)					\
-{									\
-	unsigned long __sc_ret, __sc_err;				\
-	{								\
-		register unsigned long __sc_0 __asm__ ("r0");		\
-		register unsigned long __sc_3 __asm__ ("r3");		\
-		register unsigned long __sc_4 __asm__ ("r4");		\
-									\
-		__sc_3 = (unsigned long) (arg1);			\
-		__sc_4 = (unsigned long) (arg2);			\
-		__sc_0 = __NR_##name;					\
-		__asm__ __volatile__					\
-			("sc           \n\t"				\
-			 "mfcr %1      "				\
-			: "=&r" (__sc_3), "=&r" (__sc_0)		\
-			: "0"   (__sc_3), "1"   (__sc_0),		\
-			  "r"   (__sc_4)				\
-			: __syscall_clobbers);				\
-		__sc_ret = __sc_3;					\
-		__sc_err = __sc_0;					\
-	}								\
-	__syscall_return (type);					\
-}
-
-#undef _syscall3
-#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)		\
-type name(type1 arg1, type2 arg2, type3 arg3)				\
-{									\
-	unsigned long __sc_ret, __sc_err;				\
-	{								\
-		register unsigned long __sc_0 __asm__ ("r0");		\
-		register unsigned long __sc_3 __asm__ ("r3");		\
-		register unsigned long __sc_4 __asm__ ("r4");		\
-		register unsigned long __sc_5 __asm__ ("r5");		\
-									\
-		__sc_3 = (unsigned long) (arg1);			\
-		__sc_4 = (unsigned long) (arg2);			\
-		__sc_5 = (unsigned long) (arg3);			\
-		__sc_0 = __NR_##name;					\
-		__asm__ __volatile__					\
-			("sc           \n\t"				\
-			 "mfcr %1      "				\
-			: "=&r" (__sc_3), "=&r" (__sc_0)		\
-			: "0"   (__sc_3), "1"   (__sc_0),		\
-			  "r"   (__sc_4),				\
-			  "r"   (__sc_5)				\
-			: __syscall_clobbers);				\
-		__sc_ret = __sc_3;					\
-		__sc_err = __sc_0;					\
-	}								\
-	__syscall_return (type);					\
-}
-
-#undef _syscall4
-#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
-type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4)		\
-{									\
-	unsigned long __sc_ret, __sc_err;				\
-	{								\
-		register unsigned long __sc_0 __asm__ ("r0");		\
-		register unsigned long __sc_3 __asm__ ("r3");		\
-		register unsigned long __sc_4 __asm__ ("r4");		\
-		register unsigned long __sc_5 __asm__ ("r5");		\
-		register unsigned long __sc_6 __asm__ ("r6");		\
-									\
-		__sc_3 = (unsigned long) (arg1);			\
-		__sc_4 = (unsigned long) (arg2);			\
-		__sc_5 = (unsigned long) (arg3);			\
-		__sc_6 = (unsigned long) (arg4);			\
-		__sc_0 = __NR_##name;					\
-		__asm__ __volatile__					\
-			("sc           \n\t"				\
-			 "mfcr %1      "				\
-			: "=&r" (__sc_3), "=&r" (__sc_0)		\
-			: "0"   (__sc_3), "1"   (__sc_0),		\
-			  "r"   (__sc_4),				\
-			  "r"   (__sc_5),				\
-			  "r"   (__sc_6)				\
-			: __syscall_clobbers);				\
-		__sc_ret = __sc_3;					\
-		__sc_err = __sc_0;					\
-	}								\
-	__syscall_return (type);					\
-}
+/* Do something very evil for now.  Until we create our own syscall
+ * macros, short circuit bits/syscall.h  and use asm/unistd.h instead */
+#define _BITS_SYSCALL_H
+#include <asm/unistd.h>
 
-#undef _syscall5
-#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
-type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)	\
+/* The kernel includes don't provide _syscall6, so provide our own */
+#undef _syscall6
+#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5,type6,arg6) \
+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6)	\
 {									\
 	unsigned long __sc_ret, __sc_err;				\
 	{								\
@@ -156,12 +24,14 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)	\
 		register unsigned long __sc_5 __asm__ ("r5");		\
 		register unsigned long __sc_6 __asm__ ("r6");		\
 		register unsigned long __sc_7 __asm__ ("r7");		\
+		register unsigned long __sc_8 __asm__ ("r8");		\
 									\
 		__sc_3 = (unsigned long) (arg1);			\
 		__sc_4 = (unsigned long) (arg2);			\
 		__sc_5 = (unsigned long) (arg3);			\
 		__sc_6 = (unsigned long) (arg4);			\
 		__sc_7 = (unsigned long) (arg5);			\
+		__sc_8 = (unsigned long) (arg6);			\
 		__sc_0 = __NR_##name;					\
 		__asm__ __volatile__					\
 			("sc           \n\t"				\
@@ -171,10 +41,16 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)	\
 			  "r"   (__sc_4),				\
 			  "r"   (__sc_5),				\
 			  "r"   (__sc_6),				\
-			  "r"   (__sc_7)				\
+			  "r"   (__sc_7),				\
+			  "r"   (__sc_8)				\
 			: __syscall_clobbers);				\
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
 	__syscall_return (type);					\
 }
+
+
+
+#endif /* _BITS_SYSCALLS_H */
+
diff --git a/libc/sysdeps/linux/sh/bits/syscalls.h b/libc/sysdeps/linux/sh/bits/syscalls.h
index 9759f0b4a..da6a6d43e 100644
--- a/libc/sysdeps/linux/sh/bits/syscalls.h
+++ b/libc/sysdeps/linux/sh/bits/syscalls.h
@@ -1,106 +1,15 @@
-/* This file is based on the asm/unistd.h kernel header file.
- * Including asm/unistd.h is hereby officially forbidden.  
- * Don't do it.  It is bad for you.  */ 
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
+#endif
 
 #include <features.h>
 
-/* FIXME: perhaps sh needs separate PIC syscalls? */ 
-
-
-#define __syscall_return(type, res) \
-do { \
-	if ((unsigned long)(res) >= (unsigned long)(-125)) { \
-	/* Avoid using "res" which is declared to be in register r0; \
-	   errno might expand to a function call and clobber it.  */ \
-		int __err = -(res); \
-		errno = __err; \
-		res = -1; \
-	} \
-	return (type) (res); \
-} while (0)
-
-/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
-#define _syscall0(type,name) \
-type name(void) \
-{ \
-register long __sc0 __asm__ ("r3") = __NR_##name; \
-__asm__ __volatile__ ("trapa	#0x10" \
-	: "=z" (__sc0) \
-	: "0" (__sc0) \
-	: "memory" ); \
-__syscall_return(type,__sc0); \
-}
-
-#define _syscall1(type,name,type1,arg1) \
-type name(type1 arg1) \
-{ \
-register long __sc0 __asm__ ("r3") = __NR_##name; \
-register long __sc4 __asm__ ("r4") = (long) arg1; \
-__asm__ __volatile__ ("trapa	#0x11" \
-	: "=z" (__sc0) \
-	: "0" (__sc0), "r" (__sc4) \
-	: "memory"); \
-__syscall_return(type,__sc0); \
-}
-
-#define _syscall2(type,name,type1,arg1,type2,arg2) \
-type name(type1 arg1,type2 arg2) \
-{ \
-register long __sc0 __asm__ ("r3") = __NR_##name; \
-register long __sc4 __asm__ ("r4") = (long) arg1; \
-register long __sc5 __asm__ ("r5") = (long) arg2; \
-__asm__ __volatile__ ("trapa	#0x12" \
-	: "=z" (__sc0) \
-	: "0" (__sc0), "r" (__sc4), "r" (__sc5) \
-	: "memory"); \
-__syscall_return(type,__sc0); \
-}
-
-#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
-type name(type1 arg1,type2 arg2,type3 arg3) \
-{ \
-register long __sc0 __asm__ ("r3") = __NR_##name; \
-register long __sc4 __asm__ ("r4") = (long) arg1; \
-register long __sc5 __asm__ ("r5") = (long) arg2; \
-register long __sc6 __asm__ ("r6") = (long) arg3; \
-__asm__ __volatile__ ("trapa	#0x13" \
-	: "=z" (__sc0) \
-	: "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6) \
-	: "memory"); \
-__syscall_return(type,__sc0); \
-}
-
-#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
-register long __sc0 __asm__ ("r3") = __NR_##name; \
-register long __sc4 __asm__ ("r4") = (long) arg1; \
-register long __sc5 __asm__ ("r5") = (long) arg2; \
-register long __sc6 __asm__ ("r6") = (long) arg3; \
-register long __sc7 __asm__ ("r7") = (long) arg4; \
-__asm__ __volatile__ ("trapa	#0x14" \
-	: "=z" (__sc0) \
-	: "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6),  \
-	  "r" (__sc7) \
-	: "memory" ); \
-__syscall_return(type,__sc0); \
-}
-
-#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
-register long __sc3 __asm__ ("r3") = __NR_##name; \
-register long __sc4 __asm__ ("r4") = (long) arg1; \
-register long __sc5 __asm__ ("r5") = (long) arg2; \
-register long __sc6 __asm__ ("r6") = (long) arg3; \
-register long __sc7 __asm__ ("r7") = (long) arg4; \
-register long __sc0 __asm__ ("r0") = (long) arg5; \
-__asm__ __volatile__ ("trapa	#0x15" \
-	: "=z" (__sc0) \
-	: "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6), "r" (__sc7),  \
-	  "r" (__sc3) \
-	: "memory" ); \
-__syscall_return(type,__sc0); \
-}
+/* Do something very evil for now.  Until we create our own syscall
+ * macros, short circuit bits/syscall.h  and use asm/unistd.h instead */
+#define _BITS_SYSCALL_H
+#include <asm/unistd.h>
 
+#endif /* _BITS_SYSCALLS_H */
 
diff --git a/libc/sysdeps/linux/sparc/bits/syscalls.h b/libc/sysdeps/linux/sparc/bits/syscalls.h
index 5c30e2193..da6a6d43e 100644
--- a/libc/sysdeps/linux/sparc/bits/syscalls.h
+++ b/libc/sysdeps/linux/sparc/bits/syscalls.h
@@ -1,10 +1,15 @@
-/*
- * nothing needed here until we want pthread support or similar
- */
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
+#endif
 
 #include <features.h>
-/* Do something very evil for now.  Until we include our out syscall
+
+/* Do something very evil for now.  Until we create our own syscall
  * macros, short circuit bits/syscall.h  and use asm/unistd.h instead */
 #define _BITS_SYSCALL_H
 #include <asm/unistd.h>
 
+#endif /* _BITS_SYSCALLS_H */
+
diff --git a/libc/sysdeps/linux/v850/bits/syscalls.h b/libc/sysdeps/linux/v850/bits/syscalls.h
index 5c30e2193..da6a6d43e 100644
--- a/libc/sysdeps/linux/v850/bits/syscalls.h
+++ b/libc/sysdeps/linux/v850/bits/syscalls.h
@@ -1,10 +1,15 @@
-/*
- * nothing needed here until we want pthread support or similar
- */
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
+#endif
 
 #include <features.h>
-/* Do something very evil for now.  Until we include our out syscall
+
+/* Do something very evil for now.  Until we create our own syscall
  * macros, short circuit bits/syscall.h  and use asm/unistd.h instead */
 #define _BITS_SYSCALL_H
 #include <asm/unistd.h>
 
+#endif /* _BITS_SYSCALLS_H */
+