ladybird/Kernel/Modules/TestModule.cpp

/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <AK/Format.h>
#include <Kernel/Modules/module_syms.h>

extern "C" const char module_name[] = "TestModule";

extern "C" void module_init()
{
    dmesgln("TestModule has booted!");

    for (int i = 0; i < 3; ++i) {
        dmesgln("i is now {}", i);
    }
}

extern "C" void module_fini()
{
    dmesgln("TestModule is being removed!");
}
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header. 2020-01-18 09:38:21 +01:00			`/*`
			`* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>`
			`*`
Everything: Move to SPDX license identifiers in all files. SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt * 2021-04-22 01:24:48 -07:00			`* SPDX-License-Identifier: BSD-2-Clause`
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header. 2020-01-18 09:38:21 +01:00			`*/`

Everywhere: Remove klog(), dbg() and purge all LogStream usage :^) Good-bye LogStream. Long live AK::Format! 2021-03-12 17:29:37 +01:00			`#include <AK/Format.h>`
Kernel: Module symbol declarations for type-checking With this, if a future module misses the 'extern "C"' or uses a wrong type, they get a nice compiler error instead of runtime errors or weird behavior. Also, this works towards getting the Kernel ready for -Wmissing-declarations. 2020-08-11 23:47:18 +02:00			`#include <Kernel/Modules/module_syms.h>`
Kernel: Implement very simple kernel module loading It's now possible to load a .o file into the kernel via a syscall. The kernel will perform all the necessary ELF relocations, and then call the "module_init" symbol in the loaded module. 2019-11-28 20:59:11 +01:00
Kernel: Have modules export their name in a "module_name" string This will show up in /proc/modules, and is also the name you can pass to the module_unload() syscall for unloading the module. 2019-11-29 21:31:17 +01:00			`extern "C" const char module_name[] = "TestModule";`

Kernel: Implement very simple kernel module loading It's now possible to load a .o file into the kernel via a syscall. The kernel will perform all the necessary ELF relocations, and then call the "module_init" symbol in the loaded module. 2019-11-28 20:59:11 +01:00			`extern "C" void module_init()`
			`{`
Kernel: Convert klog() => AK::Format in TestModule 2021-03-12 14:07:35 +01:00			`dmesgln("TestModule has booted!");`
Kernel: Implement very simple kernel module loading It's now possible to load a .o file into the kernel via a syscall. The kernel will perform all the necessary ELF relocations, and then call the "module_init" symbol in the loaded module. 2019-11-28 20:59:11 +01:00
Kernel: Allow modules to link against anything in kernel.map :^) We now use the symbols from kernel.map to link modules as they are loaded into the kernel. This is pretty fricken cool! 2019-11-28 21:30:20 +01:00			`for (int i = 0; i < 3; ++i) {`
Kernel: Convert klog() => AK::Format in TestModule 2021-03-12 14:07:35 +01:00			`dmesgln("i is now {}", i);`
Kernel: Implement very simple kernel module loading It's now possible to load a .o file into the kernel via a syscall. The kernel will perform all the necessary ELF relocations, and then call the "module_init" symbol in the loaded module. 2019-11-28 20:59:11 +01:00			`}`
			`}`
Kernel: Implement basic module unloading :^) Kernel modules can now be unloaded via a syscall. They get a chance to run some code of course. Before deallocating them, we call their "module_fini" symbol. 2019-11-28 21:07:22 +01:00
			`extern "C" void module_fini()`
			`{`
Kernel: Convert klog() => AK::Format in TestModule 2021-03-12 14:07:35 +01:00			`dmesgln("TestModule is being removed!");`
Kernel: Implement basic module unloading :^) Kernel modules can now be unloaded via a syscall. They get a chance to run some code of course. Before deallocating them, we call their "module_fini" symbol. 2019-11-28 21:07:22 +01:00			`}`