mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 09:40:13 +00:00
4947b4b20f
2003-03-17 Alexandre Oliva <aoliva@redhat.com> * sysdeps/mips/bits/wordsize.h: New file, appropriate for all 3 ABIs. * sysdeps/mips/mips64/gmp-mparam.h: New file. Define BITS_PER_LONGINT to __WORDSIZE, to match all 3 ABIs. * sysdeps/mips/setjmp_aux.c (STRINGXP, REGS, PTRS): New macros. (__sigsetjmp_aux): Use them. Adjust for all 3 ABIs. * sysdeps/mips/elf/start.S: Adjust for all 3 ABIs. * sysdeps/unix/mips/brk.S: Likewise. * sysdeps/unix/mips/sysdep.S: Likewise. * sysdeps/unix/sysv/linux/mips/clone.S: Likewise. * sysdeps/mips/bits/setjmp.h (__jmp_buf): Likewise. * sysdeps/mips/sys/ucontext.h: Likewise. * sysdeps/unix/sysv/linux/mips/sys/profcs.h: Likewise. * sysdeps/unix/sysv/linux/mips/sys/ucontext.h: Likewise. * sysdeps/unix/sysv/linux/mips/kernel_stat.h: Likewise. * sysdeps/mips/mips64/bsd-_setjmp.S: Likewise. * sysdeps/mips/mips64/bsd-setjmp.S: Likewise. * sysdeps/mips/mips64/setjmp.S: Likewise. * sysdeps/mips/mips64/bits/setjmp.h: Deleted, obsolete. * sysdeps/mips/mips64/soft-fp/sfp-machine.h: Use long long for 64-bit types.
102 lines
3.1 KiB
ArmAsm
102 lines
3.1 KiB
ArmAsm
/* Startup code compliant to the ELF Mips ABI.
|
|
Copyright (C) 1995, 1997, 2000, 2001, 2002, 2003
|
|
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. */
|
|
|
|
#define __ASSEMBLY__ 1
|
|
#include <entry.h>
|
|
#include <sys/asm.h>
|
|
|
|
#ifndef ENTRY_POINT
|
|
#error ENTRY_POINT needs to be defined for start.S on MIPS/ELF.
|
|
#endif
|
|
|
|
/* This is the canonical entry point, usually the first thing in the text
|
|
segment. The SVR4/Mips ABI (pages 3-31, 3-32) says that when the entry
|
|
point runs, most registers' values are unspecified, except for:
|
|
|
|
v0 ($2) 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 ($29) The stack contains the arguments and environment:
|
|
0(%esp) argc
|
|
4(%esp) argv[0]
|
|
...
|
|
(4*argc)(%esp) NULL
|
|
(4*(argc+1))(%esp) envp[0]
|
|
...
|
|
NULL
|
|
ra ($31) The return address register is set to zero so that programs
|
|
that search backword through stack frames recognize the last
|
|
stack frame.
|
|
*/
|
|
|
|
|
|
/* We need to call:
|
|
__libc_start_main (int (*main) (int, char **, char **), int argc,
|
|
char **argv, void (*init) (void), void (*fini) (void),
|
|
void (*rtld_fini) (void), void *stack_end)
|
|
*/
|
|
|
|
.text
|
|
.globl ENTRY_POINT
|
|
.type ENTRY_POINT,@function
|
|
ENTRY_POINT:
|
|
#ifdef __PIC__
|
|
SETUP_GPX($0)
|
|
SETUP_GPX64($25,$0)
|
|
#else
|
|
PTR_LA $28, _gp /* Setup GP correctly if we're non-PIC. */
|
|
move $31, $0
|
|
#endif
|
|
|
|
PTR_LA $4, main /* main */
|
|
PTR_L $5, 0($29) /* argc */
|
|
PTR_ADDIU $6, $29, PTRSIZE /* argv */
|
|
|
|
/* Allocate space on the stack for seven arguments (o32 only)
|
|
and make sure the stack is aligned to double words (8 bytes)
|
|
on o32 and quad words (16 bytes) on n32 and n64. */
|
|
|
|
and $29, -2 * SZREG
|
|
#if _MIPS_SIM == _MIPS_SIM_ABI32
|
|
PTR_SUBIU $29, 32
|
|
#endif
|
|
PTR_LA $7, __libc_csu_init /* init */
|
|
PTR_LA $8, __libc_csu_fini
|
|
#if _MIPS_SIM == _MIPS_SIM_ABI32
|
|
PTR_S $8, 16($29) /* fini */
|
|
PTR_S $2, 20($29) /* rtld_fini */
|
|
PTR_S $29, 24($29) /* stack_end */
|
|
#else
|
|
move $9, $2 /* rtld_fini */
|
|
move $10, $29 /* stack_end */
|
|
#endif
|
|
jal __libc_start_main
|
|
hlt: b hlt /* Crash if somehow it 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
|