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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /sysdeps/m68k/elf/start.S
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
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2.5-18.1
Diffstat (limited to 'sysdeps/m68k/elf/start.S')
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diff --git a/sysdeps/m68k/elf/start.S b/sysdeps/m68k/elf/start.S
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--- a/sysdeps/m68k/elf/start.S
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-/* Startup code compliant to the ELF m68k ABI.
-   Copyright (C) 1996, 1997, 1998, 2001, 2002 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.
-
-   In addition to the permissions in the GNU Lesser General Public
-   License, the Free Software Foundation gives you unlimited
-   permission to link the compiled version of this file with other
-   programs, and to distribute those programs without any restriction
-   coming from the use of this file. (The GNU Lesser General Public
-   License restrictions do apply in other respects; for example, they
-   cover modification of the file, and distribution when not linked
-   into another program.)
-
-   Note that people who make modified versions of this file are not
-   obligated to grant this special exception for their modified
-   versions; it is their choice whether to do so. The GNU Lesser
-   General Public License gives permission to release a modified
-   version without this exception; this exception also makes it
-   possible to release a modified version which carries forward this
-   exception.
-
-   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.  */
-
-/* This is the canonical entry point, usually the first thing in the text
-   segment.  The SVR4/m68k ABI says that when the entry point runs,
-   most registers' values are unspecified, except for:
-
-   %a1		Contains a function pointer to be registered with `atexit'.
-		This is how the dynamic linker arranges to have DT_FINI
-		functions called for shared libraries that have been loaded
-		before this code runs.
-
-   %sp		The stack contains the arguments and environment:
-		0(%sp)			argc
-		4(%sp)			argv[0]
-		...
-		(4*argc)(%sp)		NULL
-		(4*(argc+1))(%sp)	envp[0]
-		...
-					NULL
-*/
-
-	.text
-	.globl _start
-	.type _start,@function
-_start:
-	/* Clear the frame pointer.  The ABI suggests this be done, to mark
-	   the outermost frame obviously.  */
-	sub.l %fp, %fp
-
-	/* Extract the arguments as encoded on the stack and set up the
-	   arguments for `main': argc, argv.  envp will be determined
-	   later in __libc_start_main.  */
-	move.l (%sp)+, %d0	/* Pop the argument count.  */
-	move.l %sp, %a0		/* The argument vector starts just at the
-				   current stack top.  */
-
-	/* Provide the highest stack address to the user code (for stacks
-	   which grow downward).  */
-	pea (%sp)
-
-	pea (%a1)		/* Push address of the shared library
-				   termination function.  */
-
-	/* Push the address of our own entry points to `.fini' and
-	   `.init'.  */
-	pea __libc_csu_fini
-	pea __libc_csu_init
-
-	pea (%a0)		/* Push second argument: argv.  */
-	move.l %d0, -(%sp)	/* Push first argument: argc.  */
-
-	pea main
-
-	/* Call the user's main function, and exit with its value.  But
-	   let the libc call main.  */
-	jbsr __libc_start_main
-
-	illegal			/* Crash if somehow `exit' does return.  */
-
-/* Define a symbol for the first piece of initialized data.  */
-	.data
-	.globl __data_start
-__data_start:
-	.long 0
-	.weak data_start
-	data_start = __data_start