Initial commit

.editorconfig

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+[*]
+end_of_line  = LF
+charset      = utf-8
+indent_style = space
+indent_size  = 4
+insert_final_newline     = true
+trim_trailing_whitespace = true
+
+[*.{ts,js,tsx,jsx,lua,sh}]
+charset      = utf-8
+indent_style = space
+indent_size  = 2
+
+[*.{go,bb}]
+indent_style = tab
+
+[Makefile]
+indent_style = tab
+
+[*.{yml,json}]
+indent_style = space
+indent_size  = 2
+
+[meson.{build,options}]
+indent_style = space
+indent_size  = 2
+

.gitignore

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+# CMake/Meson
+build*
+cmake-build-*
+
+# IntelliJ
+.idea
+
+# LSPs
+.ccls
+.ccls-cache
+.cache
+compile_commands.json
+
+# JetBrains Fleet
+.fleet
+
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Visual Studio Code
+.vscode
+
+# ImGui
+imgui.ini

README.md

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+# Hello Linker Script!
+
+Trying out linker script.
+
+## Requirement
+
+  - [meson](https://mesonbuild.com/)
+
+## Development
+
+```sh
+meson setup build
+```
+
+```sh
+ninja -C build
+```
+
+## Resources
+
+  - [Mastering the GNU linker script](https://allthingsembedded.com/post/2020-04-11-mastering-the-gnu-linker-script/)
+  - [Linker Scripts](https://home.cs.colorado.edu/~main/cs1300/doc/gnu/ld_3.html)
+

haxcc.c

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+#include "haxcc.h"
+
+extern mod haxmods_begin[];
+extern mod haxmods_end[];
+
+mod* mod_begin(void) {
+    return haxmods_begin;
+}
+mod* mod_end(void) {
+    return haxmods_end;
+}

haxcc.h

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+#ifndef HAXCC_H
+#define HAXCC_H
+
+#define HAX_MOD(name) \
+    static const struct mod name __attribute__((used, section("__haxmod")))
+
+typedef int (*init_fn)(void);
+typedef int (*done_fn)(void);
+
+typedef struct mod {
+    init_fn init;
+    done_fn done;
+} mod;
+
+mod* mod_begin(void);
+mod* mod_end(void);
+
+#endif  // HAXCC_H

haxcc.ld

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+SECTIONS
+{
+    haxmods (READONLY) : ALIGN(4) {
+        PROVIDE(haxmods_begin = .);
+        KEEP(*(__haxmod))
+        PROVIDE(haxmods_end = .);
+    }
+}
+INSERT AFTER .text

hello.cpp

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+#include <cstdio>
+
+extern "C" {
+#include "haxcc.h"
+}
+
+auto main() -> int {
+    std::printf("Hello, World!\n");
+    std::printf("begin: %p, end: %p, len: %lu\n", (void*)mod_begin(), (void*)mod_end(), ((long)mod_end() - (long)mod_begin()) / sizeof(mod));
+    std::printf("\n");
+
+    for (auto* it = mod_begin(); it != mod_end(); ++it) {
+        it->init();
+    }
+
+    std::printf("\n");
+    std::printf("we're have init everything\n");
+    std::printf("\n");
+
+    for (auto* it = mod_begin(); it != mod_end(); ++it) {
+        it->done();
+    }
+    return 0;
+}

meson.build

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+project(
+  'haxcc',
+  ['c', 'cpp'],
+  version : '0.1',
+  default_options : [
+    'warning_level=3',
+    'c_std=c2x',
+    'cpp_std=c++23'
+  ])
+
+ldscript = 'haxcc.ld'
+
+executable(
+  'haxcc',
+  [
+    'hello.cpp',
+    'haxcc.c',
+    'mods/mod_a.c',
+    'mods/mod_b.c',
+  ],
+  link_args: ['-Wl,-T',  meson.source_root() / ldscript, '-no-pie' ],
+  install : false
+)

mods/mod_a.c

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+#include "haxcc.h"
+
+#include <stdio.h>
+
+int mod_a_init(void) {
+    printf("module a init\n");
+    return 0;
+}
+
+int mod_a_done(void) {
+    printf("module a done\n");
+    return 0;
+}
+
+HAX_MOD(mod_a) = {
+    .init = mod_a_init,
+    .done = mod_a_done
+};

mods/mod_b.c

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+#include "haxcc.h"
+
+#include <stdio.h>
+
+static int mod_b_init(void) {
+    printf("top kek MODB!\n");
+    return 0;
+}
+
+static int mod_b_done(void) {
+    printf("MODB do be done!\n");
+    return 0;
+}
+
+HAX_MOD(mod_b) = {
+    .init = mod_b_init,
+    .done = mod_b_done
+};