Import glibc-mainline for 2006-08-16

git-svn-id: svn://svn.eglibc.org/fsf/trunk@4 7b3dc134-2b1b-0410-93df-9e9f96275f8d

1 files changed, 106 insertions, 0 deletions

diff --git a/libc/sysdeps/unix/i386/sysdep.S b/libc/sysdeps/unix/i386/sysdep.S
new file mode 100644
index 000000000..3bc872add
--- /dev/null
+++ b/libc/sysdeps/unix/i386/sysdep.S
@@ -0,0 +1,106 @@
+/* Copyright (C) 1991,1992,1993,1994,1995,1996,1997,2000,2002,2004,2005
+	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
+#include <bits/errno.h>
+#include <bp-asm.h>
+#include <bp-sym.h>
+
+#ifdef IS_IN_rtld
+# include <dl-sysdep.h>		/* Defines RTLD_PRIVATE_ERRNO.  */
+#endif
+
+.globl C_SYMBOL_NAME(errno)
+.globl syscall_error
+
+#undef syscall_error
+#ifdef NO_UNDERSCORES
+__syscall_error:
+#else
+syscall_error:
+#endif
+#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
+	/* We translate the system's EWOULDBLOCK error into EAGAIN.
+	   The GNU C library always defines EWOULDBLOCK==EAGAIN.
+	   EWOULDBLOCK_sys is the original number.  */
+	cmpl $EWOULDBLOCK_sys, %eax /* Is it the old EWOULDBLOCK?  */
+	jne notb		/* Branch if not.  */
+	movl $EAGAIN, %eax	/* Yes; translate it to EAGAIN.  */
+notb:
+#endif
+#ifndef	PIC
+# if USE___THREAD
+#  ifndef NO_TLS_DIRECT_SEG_REFS
+	movl %eax, %gs:C_SYMBOL_NAME(errno@NTPOFF)
+#  else
+	movl %gs:0, %ecx
+	movl %eax, C_SYMBOL_NAME(errno@NTPOFF)(%ecx)
+#  endif
+# elif !defined _LIBC_REENTRANT
+	movl %eax, C_SYMBOL_NAME(errno)
+# else
+	pushl %eax
+	PUSH_ERRNO_LOCATION_RETURN
+	call BP_SYM (__errno_location)
+	POP_ERRNO_LOCATION_RETURN
+	popl %ecx
+	movl %ecx, (%eax)
+# endif
+#else
+	/* The caller has pushed %ebx and then set it up to
+	   point to the GOT before calling us through the PLT.  */
+# if USE___THREAD
+	movl C_SYMBOL_NAME(errno@GOTNTPOFF)(%ebx), %ecx
+
+	/* Pop %ebx value saved before jumping here.  */
+	popl %ebx
+#  ifndef NO_TLS_DIRECT_SEG_REFS
+	addl %gs:0, %ecx
+	movl %eax, (%ecx)
+#  else
+	movl %eax, %gs:0(%ecx)
+#  endif
+# elif RTLD_PRIVATE_ERRNO
+	movl %eax, C_SYMBOL_NAME(rtld_errno@GOTOFF)(%ebx)
+
+	/* Pop %ebx value saved before jumping here.  */
+	popl %ebx
+# elif !defined _LIBC_REENTRANT
+	movl C_SYMBOL_NAME(errno@GOT)(%ebx), %ecx
+
+	/* Pop %ebx value saved before jumping here.  */
+	popl %ebx
+	movl %eax, (%ecx)
+# else
+	pushl %eax
+	PUSH_ERRNO_LOCATION_RETURN
+	call C_SYMBOL_NAME (BP_SYM (__errno_location)@PLT)
+	POP_ERRNO_LOCATION_RETURN
+	popl %ecx
+	/* Pop %ebx value saved before jumping here.  */
+	popl %ebx
+	movl %ecx, (%eax)
+# endif
+#endif
+	movl $-1, %eax
+	ret
+
+#undef	__syscall_error
+END (__syscall_error)