37f91d336d
* csu/Makefile (crtstuff): New variable consolidates crti, crtn; add crti_s, crtn_s. (install-lib, extra-objs, generated-, omit-deps): Use that. (initfini): New canned sequence, broken out of crt[in].s rule. (crt[in].s rule): Use it. (crt[in]_s.s): New rule. * csu/initfini.c (GLOBAL): New macro; define it to empty if undefined. (_init, _fini): Use GLOBAL as storage class. Add self reference to avoid GCC optimizing out the functions. * Makefile (headers): Remove $(stddef.h). * Makeconfig (stddef.h): Variable removed; now require gcc version >= 2.2. * stddef.h: File removed. Mon Feb 20 19:42:31 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * sysdeps/unix/bsd/ultrix4/mips/start.S: Remove `__environ' definition. * sysdeps/unix/bsd/osf1/alpha/start.S: Likewise. * stdlib/strtod.c: Allow the string to start with a decimal point without a leading zero.
71 lines
1.9 KiB
ArmAsm
71 lines
1.9 KiB
ArmAsm
/* Copyright (C) 1993, 1995 Free Software Foundation, Inc.
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Contributed by Brendan Kehoe (brendan@zen.org).
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <sysdep.h>
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.comm errno, 4
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ENTRY(__start)
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.set noreorder
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/* The first thing on the stack is argc. */
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lw s0, 0(sp)
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nop
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/* Set up the global pointer. */
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la gp, _gp
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/* Then set up argv. */
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addiu s1, sp, 4
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/* To compute where envp is, first we have to jump ahead four
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bytes from what argv was. This will bring us ahead, so we don't
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need to compute the NULL at the end of argv later. */
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addiu v1, s1, 4
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/* Now, compute the space to skip given the number of arguments
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we've got. We do this by multiplying argc by 4. */
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sll v0, s0, 2
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/* Now, add (argv+4) with the space to skip...that's envp. */
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addu s2, v1, v0
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/* __environ = envp; */
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sw s2, __environ
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addiu sp, sp, -24
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/* __libc_init (argc, argv, envp); */
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move a0, s0
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move a1, s1
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jal __libc_init
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move a2, s2
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/* errno = 0; */
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sw zero, errno
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/* exit (main (argc, argv, envp)); */
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move a0, s0
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move a1, s1
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jal main
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move a2, s2
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/* Make the value returned by main be the argument to exit. */
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jal exit
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move a0, v0
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