mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
80 lines
2.7 KiB
ArmAsm
80 lines
2.7 KiB
ArmAsm
/* Startup code compliant to the ELF LoongArch ABI.
|
|
Copyright (C) 2022-2024 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, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#define __ASSEMBLY__ 1
|
|
#include <entry.h>
|
|
#include <sys/asm.h>
|
|
|
|
/* The entry point's job is to call __libc_start_main. Per the ABI,
|
|
a0 contains the address of a function to be passed to atexit.
|
|
__libc_start_main wants this in a5. */
|
|
|
|
/*
|
|
int
|
|
__libc_start_main (int (*main) (int, char **, char **),
|
|
int argc,
|
|
char **argv,
|
|
__typeof (main) init,
|
|
void (*fini) (void),
|
|
void (*rtld_fini) (void),
|
|
void *stack_end);
|
|
*/
|
|
|
|
ENTRY (ENTRY_POINT)
|
|
|
|
/* Terminate call stack by noting ra is undefined. Use a dummy
|
|
.cfi_label to force starting the FDE. */
|
|
.cfi_label .Ldummy
|
|
cfi_undefined (1)
|
|
or a5, a0, zero /* rtld_fini */
|
|
|
|
la.pcrel a0, t0, main
|
|
REG_L a1, sp, 0
|
|
ADDI a2, sp, SZREG
|
|
|
|
/* Adjust $sp for 16-aligned */
|
|
BSTRINS sp, zero, 3, 0
|
|
|
|
move a3, zero /* used to be init */
|
|
move a4, zero /* used to be fini */
|
|
or a6, sp, zero /* stack_end */
|
|
|
|
la.pcrel ra, t0, __libc_start_main
|
|
jirl ra, ra, 0
|
|
|
|
la.pcrel ra, t0, abort
|
|
jirl ra, ra, 0
|
|
END (ENTRY_POINT)
|