First commit

include/wums/common.h

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+/* based on blsug.h
+ *   by Alex Chadwick
+ *
+ * Copyright (C) 2014, Alex Chadwick
+ * Modified by Maschell, 2018-2020
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef WUMS_COMMON_DEF_H_
+#define WUMS_COMMON_DEF_H_
+
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define WUMS_SECTION(x) __attribute__((__section__ (".wums." x)))
+
+#define WUMS_META(id, value) \
+    extern const char wums_meta_ ## id [] WUMS_SECTION("meta"); \
+    const char wums_meta_ ## id [] = #id "=" value
+
+#define WUMS_MODULE_EXPORT_NAME(x) WUMS_META(export_name, x); WUMS_META(wum, "0.1"); WUMS_META(buildtimestamp, __DATE__ " " __TIME__)
+#define WUMS_MODULE_AUTHOR(x)  WUMS_META(author, x)
+#define WUMS_MODULE_VERSION(x) WUMS_META(version, x)
+#define WUMS_MODULE_LICENSE(x) WUMS_META(license, x)
+#define WUMS_MODULE_DESCRIPTION(x) WUMS_META(description, x)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* WUMS_COMMON_DEF_H_ */

include/wums/exports.h

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+/* based on blsug.h
+ *   by Alex Chadwick
+ *
+ * Copyright (C) 2014, Alex Chadwick
+ * Modified by Maschell, 2018-2020
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef WUMS_FUNCTION_EXPORT_DEF_H_
+#define WUMS_FUNCTION_EXPORT_DEF_H_
+
+#include "common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum wums_entry_type_t {
+    WUMS_FUNCTION_EXPORT,
+    WUMS_DATA_EXPORT,
+} wums_entry_type_t;
+
+typedef struct wums_entry_t {
+    wums_entry_type_t type;  
+    const char *name;                       /* name of the export */
+    const void *address;                    /* pointer to the export */   
+} wums_loader_entry_t;
+
+#define WUMS_EXPORT_FUNCTION(function)   WUMS_EXPORT(WUMS_FUNCTION_EXPORT, function);
+#define WUMS_EXPORT_DATA(pointer)        WUMS_EXPORT(WUMS_DATA_EXPORT, pointer);
+
+#define WUMS_EXPORT(_type, pointer) \
+    extern const wums_loader_entry_t wums_entry_##pointer \
+        WUMS_SECTION("exports"); \
+    const wums_loader_entry_t wums_entry_##pointer = { \
+        .type = _type, \
+        .name = # pointer, \
+        .address = (const void*) pointer \
+    }
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* WUMS_FUNCTION_EXPORT_DEF_H_ */