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#
# $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
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