osdev/kernel/dwarf.c

#include <malloc.h>
#include <byteswap.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include "dwarf.h"
#include "elf.h"
#include "console.h"

void dwarf_find_file(uintptr_t address) {
//    FILE *file;
}

void *dwarf_find_debug_info() {
    void *debug_line_ptr = NULL;
//    uint32_t read = 0;

    elf_file_t *elf_file;
    if ((elf_file = elf_open("kernel.bin")) == NULL) goto fail;
    elf_print_sections(elf_file);

    elf_section_header_t *debug_line_section = elf_find_section(elf_file, ".debug_line");
    if (debug_line_section == NULL || debug_line_section->size > UINT16_MAX) goto fail;

//    ret = f_lseek(&file, debug_line_section->offset);
//    if (ret != FR_OK) goto fail;
//
//    uint16_t debug_line_section_size = (uint16_t) debug_line_section->size;
//    kprint("debug_line_section_size = "); kprint_uint16(debug_line_section_size); kprint_char('\n');
//    debug_line_ptr = malloc(debug_line_section_size);
//    if (debug_line_ptr == NULL) goto fail;
//
//    ret = f_read(&file, debug_line_ptr, debug_line_section_size, &read);
//    if (ret != FR_OK || read != debug_line_section_size) goto fail;
//
//    dwarf_debug_line_header_t *debug_line_header = debug_line_ptr;
//    kprint_uint32(debug_line_header->length);
//    kprint_char('\n');

    goto end;

    fail:
    printf("Failed to read DWARF info: %d\n", errno);

    end:
    elf_close(elf_file);
    free(debug_line_ptr);
    return NULL;
}