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
70
71
72
73
74
75
76
77
78
79
80
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/kstdio.h>
#include <AK/String.h>
#include <assert.h>
#include <stdio.h>
char* __static_environ[] = { nullptr }; // We don't get the environment without some libc workarounds..
// FIXME: Because we need to call printf, and we don't have access to the stout file descriptor
// from the main executable. We need to call __libc_init....
extern "C" void __libc_init();
extern "C" bool __environ_is_malloced;
class Global {
public:
Global(int i)
: m_i(i)
{
__environ_is_malloced = false;
environ = __static_environ;
__libc_init();
}
int get_i() const { return m_i; }
private:
int m_i = 0;
};
// This object exists to call __stdio_init and __malloc_init. Also to show that global vars work
Global g_glob { 5 };
extern "C" {
int global_lib_variable = 1234;
void global_lib_function()
{
printf("Hello from Dynamic Lib! g_glob::m_i == %d\n", g_glob.get_i());
}
const char* other_lib_function(int my_argument)
{
dbgprintf("Hello from Dynamic Lib, now from the debug port! g_glob::m_i == %d\n", g_glob.get_i());
int sum = my_argument + global_lib_variable;
// FIXME: We can't just return AK::String::format across the lib boundary here.
// It will use malloc from our DSO's copy of LibC, and then probably be free'd into
// the malloc of the main program which would be what they call 'very crash'.
// Feels very Windows :)
static String s_string;
s_string = String::format("Here's your string! Sum of argument and global_lib_variable: %d", sum);
return s_string.characters();
}
}
|
