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{
This file is part of the Free Pascal run time library.
Copyright (c) 2019 by Free Pascal development team
This file implements parts of the startup code for OpenBSD
programs that link to the C library.
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.
**********************************************************************}
{$asmmode att}
procedure __init; cdecl; external name '__init';
procedure c_exit(exit_code: cint); cdecl; noreturn; external name 'exit';
function _csu_finish(_argv: PPChar; _envp: PPChar; _cleanup: TCdeclProcedure): PPPChar; cdecl; external name '_csu_finish';
procedure _FPC_proc___start(argc: LongInt; argv: PPChar; envp: Pointer; cleanup: TCdeclProcedure); cdecl; forward;
procedure _FPC_proc_start; assembler; nostackframe; public name '_start'; public name '__start';
asm
movl %esp,%ebp
andl $0xFFFFFFF0,%esp
pushl %edx
movl 0(%ebp),%eax
leal 8(%ebp,%eax,4),%ecx
leal 4(%ebp),%edx
pushl %ecx
pushl %edx
pushl %eax
xorl %ebp,%ebp
call _FPC_proc___start
end;
function _strrchr(str: PChar; character: LongInt): PChar; forward;
procedure _FPC_proc___start(argc: LongInt; argv: PPChar; envp: Pointer; cleanup: TCdeclProcedure); cdecl;
var
I: SizeUInt;
environp: PPPChar;
begin
environp:=_csu_finish(argv, envp, cleanup);
environ:=environp^;
operatingsystem_parameter_envp:=environ;
operatingsystem_parameter_argc:=argc;
operatingsystem_parameter_argv:=argv;
if argv[0]<>nil then
begin
__progname:=_strrchr(argv[0], Ord('/'));
if __progname<>nil then
Inc(__progname)
else
__progname:=argv[0];
I:=Low(__progname_storage);
while (I<High(__progname_storage)) and (__progname[I]<>#0) do
begin
__progname_storage[I]:=__progname[I-Low(__progname_storage)];
Inc(I);
end;
__progname_storage[I]:=#0;
__progname:=@__progname_storage;
end;
__init;
PascalMain;
c_exit(operatingsystem_result);
end;
procedure _FPC_proc_haltproc; cdecl; noreturn; public name '_haltproc';
begin
c_exit(operatingsystem_result);
end;
function _strrchr(str: PChar; character: LongInt): PChar; public name '_strrchr';
begin
_strrchr:=nil;
repeat
if str^=Chr(character) then
_strrchr:=str;
if str^<>#0 then
Inc(str);
until str^=#0;
end;
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