mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-07-31 12:28:38 +02:00
120 lines
3.2 KiB
ActionScript
120 lines
3.2 KiB
ActionScript
/*
|
|
* Startup code for programs linked with GNU libc, PowerPC
|
|
* version.
|
|
*
|
|
* Adapted from the glibc-sources (2.3.5) in the file
|
|
*
|
|
* sysdeps/powerpc/powerpc32/elf/start.S
|
|
*
|
|
* Original header follows.
|
|
*/
|
|
|
|
/* Startup code for programs linked with GNU libc.
|
|
Copyright (C) 1998,1999,2000,2001,2002,2003 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.
|
|
*/
|
|
|
|
/* These are the various addresses we require. */
|
|
.section ".rodata"
|
|
.align 2
|
|
start_addresses:
|
|
.long _SDA_BASE_
|
|
.long main_stub
|
|
.long __libc_csu_init
|
|
.long __libc_csu_fini
|
|
.size start_adresses, .-start_addresses
|
|
|
|
.section ".text"
|
|
.globl _start
|
|
_start:
|
|
/* save stack pointer for later use */
|
|
mr 9, 1
|
|
/* Set up an initial stack frame, and clear the LR. */
|
|
clrrwi 1, 1, 4
|
|
li 0, 0
|
|
stwu 1, -16(1)
|
|
mtlr 0
|
|
stw 0, 0(1)
|
|
/* Set r13 to point at the 'small data area', and put the address of
|
|
start_addresses in r8... */
|
|
lis 8, start_addresses@ha
|
|
lwzu 13, start_addresses@l(8)
|
|
/* and continue in libc-start, in glibc. */
|
|
b __libc_start_main
|
|
|
|
.globl main_stub
|
|
.type main_stub, @function
|
|
main_stub:
|
|
/* save link register and setup stack frame */
|
|
mflr 0
|
|
stw 0, 0(1)
|
|
stwu 1, -16(1)
|
|
|
|
lis 11, operatingsystem_parameter_argc@ha
|
|
stw 3, operatingsystem_parameter_argc@l(11);
|
|
|
|
lis 11, operatingsystem_parameter_argv@ha
|
|
stw 4, operatingsystem_parameter_argv@l(11);
|
|
|
|
lis 11, operatingsystem_parameter_envp@ha
|
|
stw 5, operatingsystem_parameter_envp@l(11);
|
|
|
|
lis 11,__stkptr@ha
|
|
stw 1,__stkptr@l(11);
|
|
|
|
lis 11, ___fpc_ret@ha
|
|
stw 1, ___fpc_ret@l(11)
|
|
|
|
lis 11, __stkptr@ha
|
|
stw 1, __stkptr@l(11)
|
|
|
|
bl PASCALMAIN
|
|
|
|
.globl _haltproc
|
|
.type _haltproc, @function
|
|
_haltproc:
|
|
lis 11, ___fpc_ret@ha
|
|
lwz 1, ___fpc_ret@l(11)
|
|
addi 1, 1, 16
|
|
lwz 0, 0(1)
|
|
mtlr 0
|
|
blr
|
|
|
|
# li 0, 1 /* exit call */
|
|
# lis 3, operatingsystem_result@h
|
|
# stw 3, operatingsystem_result@l(3)
|
|
# sc
|
|
# b _haltproc
|
|
|
|
/* Define a symbol for the first piece of initialized data. */
|
|
.section ".data"
|
|
.globl __data_start
|
|
__data_start:
|
|
data_start:
|
|
|
|
___fpc_ret: /* return address to libc */
|
|
.long 0
|
|
|
|
.text
|
|
.comm __stkptr, 4
|
|
|
|
.comm operatingsystem_parameter_envp, 4
|
|
.comm operatingsystem_parameter_argc, 4
|
|
.comm operatingsystem_parameter_argv, 4
|
|
|