gp_elf_note.h

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// SPDX-License-Identifier: LGPL-2.1-or-later
/*
 * Copyright (C) 2024 Cyril Hrubis <metan@ucw.cz>
 */
 
#ifndef GP_ELF_NOTE_H
#define GP_ELF_NOTE_H
 
#include <core/gp_common.h>
#include <stdint.h>
 
#define GP_ELF_NOTE_VENDOR "gfxprim"
 
struct gp_elf_note_hdr {
        uint32_t namesz;
        uint32_t descsz;
        uint32_t type;
        char name[sizeof(GP_ELF_NOTE_VENDOR)];
        char desc_data[];
};
 
#define GP_ELF_NOTE(note_namespace, note_type, note_c_type, note_c_type_size, ...) \
        __attribute__((used, section(".note." GP_ELF_NOTE_VENDOR "." note_namespace), aligned(4))) \
        static const struct { \
                const struct gp_elf_note_hdr hdr; \
                const note_c_type; \
        } GP_UNIQUE_ID(gp_elf_note_) = { \
                .hdr = { \
                        .namesz = sizeof(GP_ELF_NOTE_VENDOR), \
                        .descsz = note_c_type_size, \
                        .type = note_type, \
                        .name = GP_ELF_NOTE_VENDOR, \
                }, \
                .desc = __VA_ARGS__, \
        };
 
#define GP_ELF_NOTE_STR(note_namespace, note_type, note_str) \
        GP_ELF_NOTE(note_namespace, note_type, char desc[sizeof(note_str)], sizeof(note_str), note_str)
 
void gp_elf_notes_process(void (*callback)(uint32_t note_type, const void *note_desc, void *priv),
                          void *priv);
 
#endif /* GP_ELF_NOTE_H */