cleanup & standardize

ldso/ldso/sparc/dl-syscalls.h

@@ -1,6 +1,9 @@
 /*
  * This file contains the system call macros and syscall 
  * numbers used by the shared library loader.
+ *
+ * NOTE: This should be integrated/moved to 
+ *       sysdeps/linux/sparc/bits/syscalls.h at some point ...
  */
 
 #define __NR_exit		  1
@@ -13,7 +16,7 @@
 #define __NR_getgid		 47
 #define __NR_geteuid		 49
 #define __NR_getegid		 50
-#define __NR_readlink            58
+#define __NR_readlink		 58
 #define __NR_mmap		 71
 #define __NR_munmap		 73
 #define __NR_stat		 38
@@ -22,165 +25,161 @@
 /* We can't use the real errno in ldso, since it has not yet
  * been dynamicly linked in yet. */
 extern int _dl_errno;
+#define __set_errno(X) {(_dl_errno) = (X);}
 
 /* Here are the macros which define how this platform makes
  * system calls.  This particular variant does _not_ set 
- * errno (note how it is disabled in __syscall_return) since
+ * errno (note how _dl_errno is used in __syscall_return) since
  * these will get called before the errno symbol is dynamicly 
  * linked. */
 
+#define __syscall_return(type, res) \
+do { \
+	if (res < -255 || res >= 0) \
+		return (type) res; \
+	__set_errno(-res); \
+	res = -1; \
+	return (type) res; \
+} while (0)
+
 #define _syscall0(type,name) \
 type name(void) \
 { \
-long __res; \
-register long __g1 __asm__ ("g1") = __NR_##name; \
-__asm__ __volatile__ ("t 0x10\n\t" \
-		      "bcc 1f\n\t" \
-		      "mov %%o0, %0\n\t" \
-		      "sub %%g0, %%o0, %0\n\t" \
-		      "1:\n\t" \
-		      : "=r" (__res)\
-		      : "r" (__g1) \
-		      : "o0", "cc"); \
-if (__res < -255 || __res >= 0) \
-    return (type) __res; \
-_dl_errno = -__res; \
-return -1; \
+	long __res; \
+	register long __g1 __asm__ ("g1") = __NR_##name; \
+	__asm__ __volatile__ ( \
+		"t 0x10\n\t" \
+		"bcc 1f\n\t" \
+		"mov %%o0, %0\n\t" \
+		"sub %%g0, %%o0, %0\n\t" \
+		"1:\n\t" \
+		: "=r" (__res)\
+		: "r" (__g1) \
+		: "o0", "cc"); \
+	__syscall_return(type, __res); \
 }
 
 #define _syscall1(type,name,type1,arg1) \
 type name(type1 arg1) \
 { \
-long __res; \
-register long __g1 __asm__ ("g1") = __NR_##name; \
-register long __o0 __asm__ ("o0") = (long)(arg1); \
-__asm__ __volatile__ ("t 0x10\n\t" \
-		      "bcc 1f\n\t" \
-		      "mov %%o0, %0\n\t" \
-		      "sub %%g0, %%o0, %0\n\t" \
-		      "1:\n\t" \
-		      : "=r" (__res), "=&r" (__o0) \
-		      : "1" (__o0), "r" (__g1) \
-		      : "cc"); \
-if (__res < -255 || __res >= 0) \
-	return (type) __res; \
-_dl_errno = -__res; \
-return -1; \
+	long __res; \
+	register long __g1 __asm__ ("g1") = __NR_##name; \
+	register long __o0 __asm__ ("o0") = (long)(arg1); \
+	__asm__ __volatile__ ( \
+		"t 0x10\n\t" \
+		"bcc 1f\n\t" \
+		"mov %%o0, %0\n\t" \
+		"sub %%g0, %%o0, %0\n\t" \
+		"1:\n\t" \
+		: "=r" (__res), "=&r" (__o0) \
+		: "1" (__o0), "r" (__g1) \
+		: "cc"); \
+	__syscall_return(type, __res); \
 }
 
 #define _syscall2(type,name,type1,arg1,type2,arg2) \
 type name(type1 arg1,type2 arg2) \
 { \
-long __res; \
-register long __g1 __asm__ ("g1") = __NR_##name; \
-register long __o0 __asm__ ("o0") = (long)(arg1); \
-register long __o1 __asm__ ("o1") = (long)(arg2); \
-__asm__ __volatile__ ("t 0x10\n\t" \
-		      "bcc 1f\n\t" \
-		      "mov %%o0, %0\n\t" \
-		      "sub %%g0, %%o0, %0\n\t" \
-		      "1:\n\t" \
-		      : "=r" (__res), "=&r" (__o0) \
-		      : "1" (__o0), "r" (__o1), "r" (__g1) \
-		      : "cc"); \
-if (__res < -255 || __res >= 0) \
-	return (type) __res; \
-_dl_errno = -__res; \
-return -1; \
+	long __res; \
+	register long __g1 __asm__ ("g1") = __NR_##name; \
+	register long __o0 __asm__ ("o0") = (long)(arg1); \
+	register long __o1 __asm__ ("o1") = (long)(arg2); \
+	__asm__ __volatile__ ( \
+		"t 0x10\n\t" \
+		"bcc 1f\n\t" \
+		"mov %%o0, %0\n\t" \
+		"sub %%g0, %%o0, %0\n\t" \
+		"1:\n\t" \
+		: "=r" (__res), "=&r" (__o0) \
+		: "1" (__o0), "r" (__o1), "r" (__g1) \
+		: "cc"); \
+	__syscall_return(type, __res); \
 }
 
 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
 type name(type1 arg1,type2 arg2,type3 arg3) \
 { \
-long __res; \
-register long __g1 __asm__ ("g1") = __NR_##name; \
-register long __o0 __asm__ ("o0") = (long)(arg1); \
-register long __o1 __asm__ ("o1") = (long)(arg2); \
-register long __o2 __asm__ ("o2") = (long)(arg3); \
-__asm__ __volatile__ ("t 0x10\n\t" \
-		      "bcc 1f\n\t" \
-		      "mov %%o0, %0\n\t" \
-		      "sub %%g0, %%o0, %0\n\t" \
-		      "1:\n\t" \
-		      : "=r" (__res), "=&r" (__o0) \
-		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) \
-		      : "cc"); \
-if (__res < -255 || __res>=0) \
-	return (type) __res; \
-_dl_errno = -__res; \
-return -1; \
+	long __res; \
+	register long __g1 __asm__ ("g1") = __NR_##name; \
+	register long __o0 __asm__ ("o0") = (long)(arg1); \
+	register long __o1 __asm__ ("o1") = (long)(arg2); \
+	register long __o2 __asm__ ("o2") = (long)(arg3); \
+	__asm__ __volatile__ ( \
+		"t 0x10\n\t" \
+		"bcc 1f\n\t" \
+		"mov %%o0, %0\n\t" \
+		"sub %%g0, %%o0, %0\n\t" \
+		"1:\n\t" \
+		: "=r" (__res), "=&r" (__o0) \
+		: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) \
+		: "cc"); \
+	__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) \
 { \
-long __res; \
-register long __g1 __asm__ ("g1") = __NR_##name; \
-register long __o0 __asm__ ("o0") = (long)(arg1); \
-register long __o1 __asm__ ("o1") = (long)(arg2); \
-register long __o2 __asm__ ("o2") = (long)(arg3); \
-register long __o3 __asm__ ("o3") = (long)(arg4); \
-__asm__ __volatile__ ("t 0x10\n\t" \
-		      "bcc 1f\n\t" \
-		      "mov %%o0, %0\n\t" \
-		      "sub %%g0, %%o0, %0\n\t" \
-		      "1:\n\t" \
-		      : "=r" (__res), "=&r" (__o0) \
-		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__g1) \
-		      : "cc"); \
-if (__res < -255 || __res>=0) \
-	return (type) __res; \
-_dl_errno = -__res; \
-return -1; \
+	long __res; \
+	register long __g1 __asm__ ("g1") = __NR_##name; \
+	register long __o0 __asm__ ("o0") = (long)(arg1); \
+	register long __o1 __asm__ ("o1") = (long)(arg2); \
+	register long __o2 __asm__ ("o2") = (long)(arg3); \
+	register long __o3 __asm__ ("o3") = (long)(arg4); \
+	__asm__ __volatile__ ( \
+		"t 0x10\n\t" \
+		"bcc 1f\n\t" \
+		"mov %%o0, %0\n\t" \
+		"sub %%g0, %%o0, %0\n\t" \
+		"1:\n\t" \
+		: "=r" (__res), "=&r" (__o0) \
+		: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__g1) \
+		: "cc"); \
+	__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) \
 { \
-long __res; \
-register long __g1 __asm__ ("g1") = __NR_##name; \
-register long __o0 __asm__ ("o0") = (long)(arg1); \
-register long __o1 __asm__ ("o1") = (long)(arg2); \
-register long __o2 __asm__ ("o2") = (long)(arg3); \
-register long __o3 __asm__ ("o3") = (long)(arg4); \
-register long __o4 __asm__ ("o4") = (long)(arg5); \
-__asm__ __volatile__ ("t 0x10\n\t" \
-		      "bcc 1f\n\t" \
-		      "mov %%o0, %0\n\t" \
-		      "sub %%g0, %%o0, %0\n\t" \
-		      "1:\n\t" \
-		      : "=r" (__res), "=&r" (__o0) \
-		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__g1) \
-		      : "cc"); \
-if (__res < -255 || __res>=0) \
-	return (type) __res; \
-_dl_errno = -__res; \
-return -1; \
+	long __res; \
+	register long __g1 __asm__ ("g1") = __NR_##name; \
+	register long __o0 __asm__ ("o0") = (long)(arg1); \
+	register long __o1 __asm__ ("o1") = (long)(arg2); \
+	register long __o2 __asm__ ("o2") = (long)(arg3); \
+	register long __o3 __asm__ ("o3") = (long)(arg4); \
+	register long __o4 __asm__ ("o4") = (long)(arg5); \
+	__asm__ __volatile__ ( \
+		"t 0x10\n\t" \
+		"bcc 1f\n\t" \
+		"mov %%o0, %0\n\t" \
+		"sub %%g0, %%o0, %0\n\t" \
+		"1:\n\t" \
+		: "=r" (__res), "=&r" (__o0) \
+		: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__g1) \
+		: "cc"); \
+	__syscall_return(type, __res); \
 }
 
 #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 __res; \
-register long __g1 __asm__ ("g1") = __NR_##name; \
-register long __o0 __asm__ ("o0") = (long)(arg1); \
-register long __o1 __asm__ ("o1") = (long)(arg2); \
-register long __o2 __asm__ ("o2") = (long)(arg3); \
-register long __o3 __asm__ ("o3") = (long)(arg4); \
-register long __o4 __asm__ ("o4") = (long)(arg5); \
-register long __o5 __asm__ ("o5") = (long)(arg6); \
-__asm__ __volatile__ ("t 0x10\n\t" \
-		      "bcc 1f\n\t" \
-		      "mov %%o0, %0\n\t" \
-		      "sub %%g0, %%o0, %0\n\t" \
-		      "1:\n\t" \
-		      : "=r" (__res), "=&r" (__o0) \
-		      : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__o5), "r" (__g1) \
-		      : "cc"); \
-if (__res < -255 || __res>=0) \
-	return (type) __res; \
-/*errno = -__res; */\
-return -1; \
+	long __res; \
+	register long __g1 __asm__ ("g1") = __NR_##name; \
+	register long __o0 __asm__ ("o0") = (long)(arg1); \
+	register long __o1 __asm__ ("o1") = (long)(arg2); \
+	register long __o2 __asm__ ("o2") = (long)(arg3); \
+	register long __o3 __asm__ ("o3") = (long)(arg4); \
+	register long __o4 __asm__ ("o4") = (long)(arg5); \
+	register long __o5 __asm__ ("o5") = (long)(arg6); \
+	__asm__ __volatile__ ( \
+		"t 0x10\n\t" \
+		"bcc 1f\n\t" \
+		"mov %%o0, %0\n\t" \
+		"sub %%g0, %%o0, %0\n\t" \
+		"1:\n\t" \
+		: "=r" (__res), "=&r" (__o0) \
+		: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__o5), "r" (__g1) \
+		: "cc"); \
+	__syscall_return(type, __res); \
 }