1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
{
This file is part of the Free Pascal run time library.
Copyright (c) 2019 by Jeppe Johansen.
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.
**********************************************************************}
{******************************************************************************
Process start/halt
******************************************************************************}
var
dlexitproc : pointer;
var
BSS_START: record end; external name '__bss_start';
STACK_PTR: record end; external name '__stkptr';
libc_init_proc: TProcedure; weakexternal name '_init';
libc_fini_proc: TProcedure; weakexternal name '_fini';
procedure libc_start_main(main: TProcedure; argc: ptruint; argv: ppchar; init, fini, rtld_fini: TProcedure; stack_end: pointer); cdecl; external name '__libc_start_main';
procedure libc_exit(code: ptruint); cdecl; external name 'exit';
procedure _FPC_xtensa_enter(at_exit: TProcedure; sp: pptruint);
var
argc: ptruint;
argv: ppchar;
begin
argc:=sp[0];
argv:=@sp[1];
initialstkptr:=sp;
operatingsystem_parameter_argc:=argc;
operatingsystem_parameter_argv:=argv;
operatingsystem_parameter_envp:=@sp[argc+2];
libc_start_main(@PascalMain, argc, argv, libc_init_proc, libc_fini_proc, at_exit, sp);
end;
procedure _FPC_proc_start; assembler; public name '_start';
asm
ill
end;
procedure _FPC_xtensa_exit(e:longint); assembler;
asm
mov a6,a3
movi a2,119
syscall
end;
procedure _FPC_proc_haltproc(e:longint); cdecl; public name '_haltproc';
begin
while true do
begin
libc_exit(e);
_FPC_xtensa_exit(e);
end;
end;
|
