mirror of
https://sourceware.org/git/glibc.git
synced 2024-09-30 02:57:50 +00:00
06b31ad3ef
* Makeconfig (CPPFLAGS-.oS): Add -DLIBC_NONSHARED=1. * csu/elf-init.c: New file. * csu/Makefile (routines, static-only-routines): Add elf-init. * sysdeps/alpha/elf/start.S: Use __libc_csu_init in place of _init and __libc_csu_fini in place of _fini. * sysdeps/arm/elf/start.S: Likewise. * sysdeps/cris/elf/start.S: Likewise. * sysdeps/hppa/elf/start.S: Likewise. * sysdeps/i386/elf/start.S: Likewise. * sysdeps/ia64/elf/start.S: Likewise. * sysdeps/m68k/elf/start.S: Likewise. * sysdeps/mach/hurd/powerpc/static-start.S: Likewise. * sysdeps/mips/elf/start.S: Likewise. * sysdeps/powerpc/powerpc32/elf/start.S: Likewise. * sysdeps/powerpc/powerpc64/elf/start.S: Likewise. * sysdeps/s390/s390-32/elf/start.S: Likewise. * sysdeps/s390/s390-64/elf/start.S: Likewise. * sysdeps/sh/elf/start.S: Likewise. * sysdeps/sparc/sparc32/elf/start.S: Likewise. * sysdeps/sparc/sparc64/elf/start.S: Likewise. * sysdeps/x86_64/elf/start.S: Likewise.
84 lines
2.7 KiB
ArmAsm
84 lines
2.7 KiB
ArmAsm
/* 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.
|
|
|
|
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
|