mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-21 12:09:30 +02:00
194 lines
3.8 KiB
ActionScript
194 lines
3.8 KiB
ActionScript
#
|
|
# $Id: prt0.as,v 1.2 2004/01/04 01:13:23 marco Exp $
|
|
# This file is part of the Free Pascal run time library.
|
|
# Copyright (c) 1999-2000 by Marco van de Voort, Michael Van Canneyt
|
|
# and Peter Vreman
|
|
# members of the Free Pascal development team.
|
|
#
|
|
# See the file COPYING.FPC, included in this distribution,
|
|
# for details about the copyright.
|
|
#
|
|
# This program 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.
|
|
#
|
|
#**********************************************************************}
|
|
#
|
|
# NetBSD standard (static) ELF/i386 startup code for Free Pascal
|
|
#
|
|
|
|
http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/csu/i386/crt0.c?rev=1.33&content-type=text/x-cvsweb-markup
|
|
|
|
.file "prt0.s"
|
|
.version "01.01"
|
|
gcc2_compiled.:
|
|
.globl __progname
|
|
|
|
.section .rodata
|
|
.LC0:
|
|
.ascii "\0"
|
|
.data
|
|
.align 4
|
|
.type __progname,@object
|
|
.size __progname,4
|
|
__progname:
|
|
.long .LC0
|
|
.globl __ps_strings
|
|
.align 4
|
|
.type __ps_strings,@object
|
|
.size __ps_strings,4
|
|
__ps_strings:
|
|
.long 0
|
|
.align 4
|
|
.ifdef CPREFIX
|
|
___fpucw:
|
|
.else
|
|
__fpucw:
|
|
.endif
|
|
.long 0x1332
|
|
|
|
.globl ___fpc_brk_addr /* heap management */
|
|
.type ___fpc_brk_addr,@object
|
|
.size ___fpc_brk_addr,4
|
|
___fpc_brk_addr:
|
|
.long 0
|
|
|
|
#APP
|
|
|
|
.text
|
|
.align 4
|
|
.globl __start
|
|
.globl _start
|
|
_start:
|
|
__start:
|
|
pushl %ebx # ps_strings
|
|
pushl %ecx # obj
|
|
pushl %edx # cleanup
|
|
movl 12(%esp),%eax
|
|
leal 20(%esp,%eax,4),%ecx
|
|
leal 16(%esp),%edx
|
|
pushl %ecx
|
|
pushl %edx
|
|
pushl %eax
|
|
call ___start
|
|
|
|
#NO_APP
|
|
.text
|
|
.align 4
|
|
.globl ___start
|
|
.type ___start,@function
|
|
___start:
|
|
pushl %ebp
|
|
movl %esp,%ebp
|
|
movl 16(%ebp),%eax
|
|
movl %eax,environ
|
|
movl %eax,operatingsystem_parameter_envp
|
|
movl 8(%ebp),%eax
|
|
movl %eax,operatingsystem_parameter_argc
|
|
movl 12(%ebp),%eax
|
|
movl %eax,operatingsystem_parameter_argv
|
|
movl (%eax),%edx
|
|
movl %edx,__progname
|
|
testl %edx,%edx
|
|
je .L2
|
|
movl __progname,%edx
|
|
// Increase until 0 found
|
|
movl $0,%ebx
|
|
.LL1:
|
|
movb (%edx,%ebx),%al
|
|
orb %al,%al
|
|
je .LL2
|
|
incl %ebx
|
|
.LL2:
|
|
decl %ebx
|
|
movb (%edx,%ebx),%al
|
|
cmpb $47,%al
|
|
je .LL3
|
|
cmpl $0,%ebx
|
|
je .LL4
|
|
.LL3: // slash found
|
|
incl %ebx
|
|
leal (%edx,%ebx),%eax
|
|
movl %eax,__progname
|
|
.LL4:
|
|
cmpl $0,__progname
|
|
jne .L3
|
|
movl 12(%ebp),%eax
|
|
movl (%eax),%edx
|
|
movl %edx,__progname
|
|
jmp .L2
|
|
.align 4
|
|
.L3:
|
|
incl __progname
|
|
.L4:
|
|
.L2:
|
|
cmpl $0,28(%ebp)
|
|
je .L5
|
|
movl 28(%ebp),%eax
|
|
movl %eax,__ps_strings
|
|
.L5:
|
|
# pushl $_fini
|
|
# call atexit
|
|
# addl $4,%esp
|
|
# call _init
|
|
# copied from linux
|
|
|
|
finit /* initialize fpu */
|
|
fwait
|
|
.ifdef CPREFIX
|
|
fldcw ___fpucw
|
|
.else
|
|
fldcw __fpucw
|
|
.endif
|
|
xorl %ebp,%ebp
|
|
|
|
.ifdef CPREFIX
|
|
call _main
|
|
.else
|
|
call main
|
|
.endif
|
|
pushl %eax
|
|
jmp _haltproc
|
|
|
|
.p2align 2,0x90
|
|
.globl _haltproc
|
|
.type _haltproc,@function
|
|
|
|
_haltproc:
|
|
mov $1,%eax
|
|
movzwl operatingsystem_result,%ebx
|
|
pushl %ebx
|
|
call _actualsyscall
|
|
addl $4,%esp
|
|
jmp _haltproc
|
|
|
|
_actualsyscall:
|
|
int $0x80
|
|
jb .LErrorcode
|
|
xor %ebx,%ebx
|
|
ret
|
|
.LErrorcode:
|
|
mov %eax,%ebx
|
|
mov $-1,%eax
|
|
ret
|
|
.p2align 2,0x90
|
|
|
|
# This section is needed for NetBSD to recognize a NetBSD binary as such.
|
|
# otherwise it will be startup in Linux emulation mode.
|
|
|
|
.section ".note.netbsd.ident","a"
|
|
.p2align 2
|
|
|
|
.long 7
|
|
.long 4
|
|
# ELF NOTE TYPE NETBSD TAG
|
|
.long 1
|
|
.ascii "NetBSD\0\0"
|
|
.long 199905
|
|
|
|
.comm environ,4,4
|
|
.comm operatingsystem_parameter_envp,4,4
|
|
.comm operatingsystem_parameter_argc,4,4
|
|
.comm operatingsystem_parameter_argv,4,4
|
|
|