mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
55 lines
1.7 KiB
ArmAsm
55 lines
1.7 KiB
ArmAsm
|
/*******************************************************************************
|
||
|
|
|
||
|
|
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
|
||
|
|
|
||
|
|
This file is part of LibMaxsi.
|
||
|
|
|
||
|
|
LibMaxsi 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 3 of the License, or (at your option)
|
||
|
|
any later version.
|
||
|
|
|
||
|
|
LibMaxsi 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 LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
crt1.s
|
||
|
|
Implement the _start symbol at which execution begins which performs the
|
||
|
|
task of initializing the standard library and executing the main function.
|
||
|
|
|
||
|
|
*******************************************************************************/
|
||
|
|
|
||
|
|
/* NOTE: This is almost identical to what is in start.s. crt1.s is used when
|
||
|
|
compiling with the real cross compiler, while start.s is used when
|
||
|
|
using the older hacky way of building Sortix. Please try to keep these
|
||
|
|
files alike by doing changes both places until we only build Sortix
|
||
|
|
with real cross compilers. */
|
||
|
|
|
||
|
|
.section .text
|
||
|
|
|
||
|
|
.global _start
|
||
|
|
.type _start, @function
|
||
|
|
_start:
|
||
|
|
movq %rcx, environ # envp
|
||
|
|
|
||
|
|
# Prepare signals, memory allocation, stdio and such.
|
||
|
|
pushq %rsi
|
||
|
|
pushq %rdi
|
||
|
|
call initialize_standard_library
|
||
|
|
|
||
|
|
# Run the global constructors.
|
||
|
|
call _init
|
||
|
|
|
||
|
|
# Run main
|
||
|
|
popq %rdi
|
||
|
|
popq %rsi
|
||
|
|
call main
|
||
|
|
|
||
|
|
# Terminate the process with main's exit code.
|
||
|
|
movl %eax, %edi
|
||
|
|
call exit
|