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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/unix/bsd/i386/wait3.S
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diff --git a/sysdeps/unix/bsd/i386/wait3.S b/sysdeps/unix/bsd/i386/wait3.S
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+/* Copyright (C) 1991, 1992, 1993, 1995 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <sysdep.h>
+
+/* <sysdeps/unix/bsd/sequent/i386/sysdep.h> defines this to put the first
+   two arguments into registers.  Since the arguments to wait3 are
+   transferred magically through the same registers, we want to disable this.
+   This allows us to avoid rewriting this file for that system.  */
+
+#undef	ARGS_2
+#define ARGS_2	/* Special-case no-op.  */
+
+.text
+.globl syscall_error
+.align 4
+ENTRY (__wait3)
+	mov 8(%esp), %ecx	/* Flags.  */
+	mov 12(%esp), %edx	/* rusage pointer.  */
+	pushl $0xdf; popf	/* Set all the condition codes.  */
+	DO_CALL (wait, 2)	/* Do the system call.  */
+	je syscall_error	/* Check for error.  */
+	mov 4(%esp), scratch	/* Status pointer.  */
+	orl scratch, scratch	/* Is it nil?  */
+	je done			/* Yup; return.  */
+	mov r1, 0(scratch)	/* Non-nil; store the status in it.  */
+done:	ret
+
+weak_alias (__wait3, wait3)