From a334319f6530564d22e775935d9c91663623a1b4 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 22 Dec 2004 20:10:10 +0000 Subject: (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4. --- sysdeps/unix/arm/start.c | 97 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100644 sysdeps/unix/arm/start.c (limited to 'sysdeps/unix/arm/start.c') diff --git a/sysdeps/unix/arm/start.c b/sysdeps/unix/arm/start.c new file mode 100644 index 0000000000..6bf08b1d7f --- /dev/null +++ b/sysdeps/unix/arm/start.c @@ -0,0 +1,97 @@ +/* Special startup code for ARM a.out binaries. + Copyright (C) 1998, 2004 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. */ + +#include +#include +#include +#include + +/* The first piece of initialized data. */ +int __data_start = 0; +#ifdef HAVE_WEAK_SYMBOLS +weak_alias (__data_start, data_start) +#endif + +extern void __libc_init (int argc, char **argv, char **envp); +extern int main (int argc, char **argv, char **envp); + +/* N.B.: It is important that this be the first function. + This file is the first thing in the text section. */ + +/* If this was in C it might create its own stack frame and + screw up the arguments. */ +#ifdef NO_UNDERSCORES +asm (".text; .globl _start; _start: B start1"); +#else +asm (".text; .globl __start; __start: B _start1"); + +/* Make an alias called `start' (no leading underscore, so it can't + conflict with C symbols) for `_start'. This is the name vendor crt0.o's + tend to use, and thus the name most linkers expect. */ +asm (".set start, __start"); +#endif + +/* Fool gcc into thinking that more args are passed. This makes it look + on the stack (correctly) for the real arguments. It causes somewhat + strange register usage in start1(), but we aren't too bothered about + that at the moment. */ +#define DUMMIES a1, a2, a3, a4 + +#ifdef DUMMIES +#define ARG_DUMMIES DUMMIES, +#define DECL_DUMMIES int DUMMIES; +#else +#define ARG_DUMMIES +#define DECL_DUMMIES +#endif + +/* ARGSUSED */ +static void +start1 (ARG_DUMMIES argc, argv, envp) + DECL_DUMMIES + int argc; + char **argv; + char **envp; +{ + /* Store a pointer to the environment. */ + __environ = envp; + + /* Do C library initializations. */ + __libc_init (argc, argv, __environ); + + /* Call the user program. */ + exit (main (argc, argv, __environ)); +} -- cgit 1.4.1