mirror of
https://gitlab.com/freepascal.org/fpc/source.git
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98 lines
3.1 KiB
PHP
98 lines
3.1 KiB
PHP
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 2019 by Free Pascal development team
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This file implements parts of the startup code for OpenBSD
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programs, compiled with gprof support.
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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{$asmmode gas}
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var
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_etext: Byte; external name '_etext';
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_eprol: Byte; external name '_eprol';
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procedure _mcleanup; cdecl; external name '_mcleanup';
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function atexit(proc: TCdeclProcedure): cint; cdecl; external name 'atexit';
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procedure _monstartup(lowpc, highpc: u_long); cdecl; external name '_monstartup';
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procedure __init; cdecl; external name '__init';
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procedure c_exit(exit_code: cint); cdecl; noreturn; external name 'exit';
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function _csu_finish(_argv: PPChar; _envp: PPChar; _cleanup: TCdeclProcedure): PPPChar; cdecl; external name '_csu_finish';
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procedure _FPC_proc___start(argc: LongInt; argv: PPChar; envp: Pointer; cleanup: TCdeclProcedure); cdecl; forward;
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procedure _FPC_proc_start; assembler; nostackframe; public name '_start'; public name '__start';
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asm
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movq %rdx,%rcx
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movq (%rsp),%rdi
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leaq 16(%rsp,%rdi,8),%rdx
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leaq 8(%rsp),%rsi
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subq $8,%rsp
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andq $0xFFFFFFFFFFFFFFF0,%rsp
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addq $8,%rsp
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jmp _FPC_proc___start
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end;
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function _strrchr(str: PChar; character: LongInt): PChar; forward;
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procedure _FPC_proc___start(argc: LongInt; argv: PPChar; envp: Pointer; cleanup: TCdeclProcedure); cdecl;
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var
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I: SizeUInt;
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environp: PPPChar;
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begin
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environp:=_csu_finish(argv, envp, cleanup);
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environ:=environp^;
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operatingsystem_parameter_envp:=environ;
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operatingsystem_parameter_argc:=argc;
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operatingsystem_parameter_argv:=argv;
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if argv[0]<>nil then
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begin
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__progname:=_strrchr(argv[0], Ord('/'));
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if __progname<>nil then
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Inc(__progname)
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else
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__progname:=argv[0];
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I:=Low(__progname_storage);
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while (I<High(__progname_storage)) and (__progname[I]<>#0) do
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begin
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__progname_storage[I]:=__progname[I-Low(__progname_storage)];
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Inc(I);
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end;
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__progname_storage[I]:=#0;
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__progname:=@__progname_storage;
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end;
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atexit(@_mcleanup);
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_monstartup(u_long(@_eprol),u_long(@_etext));
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__init;
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PascalMain;
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c_exit(operatingsystem_result);
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end;
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procedure _FPC_proc_haltproc; cdecl; noreturn; public name '_haltproc';
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begin
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c_exit(operatingsystem_result);
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end;
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function _strrchr(str: PChar; character: LongInt): PChar; public name '_strrchr';
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begin
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_strrchr:=nil;
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repeat
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if str^=Chr(character) then
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_strrchr:=str;
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if str^<>#0 then
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Inc(str);
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until str^=#0;
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end;
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procedure MD_EPROL_LABEL; assembler; nostackframe; public name '_eprol';
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asm
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end;
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