Update.

2003-01-14  Guido Guenther  <agx@sigxcpu.org>

	* sysdeps/unix/sysv/linux/mips/sysdep.h (INTERNAL_SYSCALL,
	INTERNAL_SYSCALL_DECL, INTERNAL_SYSCALL_ERRNO,
	INTERNAL_SYSCALL_ERROR_P, INLINE_SYSCALL): Define.

2003-01-14  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h
	(INTERNAL_SYSCALL): Make use of ERR parameter.
	(INTERNAL_SYSCALL_DECL, INTERNAL_SYSCALL_ERRNO,
	INTERNAL_SYSCALL_ERROR_P): Adjust accordingly.
	(INLINE_SYSCALL): Make use of INTERNAL_SYSCALL.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S: New file.

	Patch by Denis Zaitsev <zzz@cd-club.ru>.
	that %eax is modified.  Reported by Denis Zaitsev <zzz@cd-club.ru>.

2 files changed, 75 insertions, 37 deletions

diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h
index d37be2ef4f..c215398995 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h
@@ -74,36 +74,14 @@
    behave like function calls as far as register saving.  */
 #define INLINE_SYSCALL(name, nr, args...)			\
   ({								\
-    register long r0 __asm__ ("r0");				\
-    register long r3 __asm__ ("r3");				\
-    register long r4 __asm__ ("r4");				\
-    register long r5 __asm__ ("r5");				\
-    register long r6 __asm__ ("r6");				\
-    register long r7 __asm__ ("r7");				\
-    register long r8 __asm__ ("r8");				\
-    long ret, err;						\
-    LOADARGS_##nr(name, args);					\
-    __asm __volatile ("sc\n\t"					\
-		      "mfcr	%7\n\t"				\
-		      : "=r" (r0), "=r" (r3), "=r" (r4),	\
-		        "=r" (r5), "=r" (r6), "=r" (r7),	\
-		        "=r" (r8), "=r" (err)			\
-		      : ASM_INPUT_##nr				\
-		      : "r9", "r10", "r11", "r12",		\
-		        "fr0", "fr1", "fr2", "fr3",		\
-			      "fr4", "fr5", "fr6", "fr7",		\
-            "fr8", "fr9", "fr10", "fr11",		\
-            "fr12", "fr13",				\
-            "ctr", "lr",				\
-            "cr0", "cr1", "cr5", "cr6", "cr7",	\
-            "memory");				\
-    ret = r3;							\
-    if (__builtin_expect ((err & (1 << 28)), 0))  \
-      {								\
-        __set_errno (ret);					\
-        ret = -1L;						\
-      }								\
-    ret;							\
+    INTERNAL_SYSCALL_DECL (sc_err);					\
+    long sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, args);		\
+    if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err))			\
+      {									\
+        __set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err));		\
+        sc_ret = -1L;							\
+      }									\
+    sc_ret;								\
   })
 
 /* Define a macro which expands inline into the wrapper code for a system
@@ -113,7 +91,7 @@
    the negation of the return value in the kernel gets reverted.  */
 
 # undef INTERNAL_SYSCALL
-# define INTERNAL_SYSCALL(name, nr, args...)				\
+# define INTERNAL_SYSCALL(name, err, nr, args...)				\
   ({									\
     register long r0  __asm__ ("r0");					\
     register long r3  __asm__ ("r3");					\
@@ -125,8 +103,7 @@
     LOADARGS_##nr(name, args);						\
     __asm__ __volatile__						\
       ("sc\n\t"								\
-       "bns+	0f\n\t"							\
-       "neg	%1,%1\n"						\
+       "mfcr  %0\n\t"							\
        "0:"								\
        : "=&r" (r0),							\
          "=&r" (r3), "=&r" (r4), "=&r" (r5),  \
@@ -134,14 +111,19 @@
        : ASM_INPUT_##nr							\
        : "r9", "r10", "r11", "r12",		\
          "cr0", "ctr", "memory");					\
-    (int) r3;								\
+	  err = r0;  \
+    (int) r3;  \
   })
+
+# undef INTERNAL_SYSCALL_DECL
+# define INTERNAL_SYSCALL_DECL(err) long err
   
 # undef INTERNAL_SYSCALL_ERROR_P
-# define INTERNAL_SYSCALL_ERROR_P(val)   ((unsigned long) (val) >= 0xfffffffffffff001u)
-  
+# define INTERNAL_SYSCALL_ERROR_P(val, err) \
+  (__builtin_expect (err & (1 << 28), 0))
+
 # undef INTERNAL_SYSCALL_ERRNO
-# define INTERNAL_SYSCALL_ERRNO(val)     (-(val))
+# define INTERNAL_SYSCALL_ERRNO(val, err)     (val)
 
 #define LOADARGS_0(name, dummy) \
 	r0 = __NR_##name
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S
new file mode 100644
index 0000000000..d36b917e1c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S
@@ -0,0 +1,56 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+#define _ERRNO_H	1
+#include <bits/errno.h>
+#include <kernel-features.h>
+
+/* Clone the calling process, but without copying the whole address space.
+   The calling process is suspended until the new process exits or is
+   replaced by a call to `execve'.  Return -1 for errors, 0 to the new process,
+   and the process ID of the new process to the old process.  */
+
+ENTRY (__vfork)
+
+#ifdef __NR_vfork
+
+	DO_CALL (SYS_ify (vfork))
+
+# ifdef __ASSUME_VFORK_SYSCALL
+	PSEUDO_RET
+# else
+	bnslr+
+	/* Check if vfork syscall is known at all.  */
+	cmpdi	r3,ENOSYS
+	bne	JUMPTARGET(__syscall_error)
+
+# endif
+#endif
+
+#ifndef __ASSUME_VFORK_SYSCALL
+	/* If we don't have vfork, fork is close enough.  */
+
+	DO_CALL (SYS_ify (fork))
+	PSEUDO_RET
+#endif
+
+PSEUDO_END (__vfork)
+libc_hidden_def (__vfork)
+
+weak_alias (__vfork, vfork)