static void load_elf_by_id(struct cmd_file_t *cmd_file, const char *id)
{
struct cmd_source_t *src = db_find_source_by_id(cmd_file, id);
if(src == NULL)
bug("undefined reference to source '%s'\n", id);
/* avoid reloading */
if(src->type == CMD_SRC_ELF && src->loaded)
return;
if(src->type != CMD_SRC_UNK)
bug("source '%s' seen both as elf and binary file\n", id);
/* resolve potential extern file */
resolve_extern(src);
/* load it */
src->type = CMD_SRC_ELF;
FILE *fd = fopen(src->filename, "rb");
if(fd == NULL)
bug("cannot open '%s' (id '%s')\n", src->filename, id);
if(g_debug)
printf("Loading ELF file '%s'...\n", src->filename);
elf_init(&src->elf);
src->loaded = elf_read_file(&src->elf, elf_read, elf_printf, fd);
fclose(fd);
if(!src->loaded)
bug("error loading elf file '%s' (id '%s')\n", src->filename, id);
elf_translate_addresses(&src->elf);
}
static int load_elf(struct sb1_file_t *sb, const char *filename, int act)
{
struct elf_params_t elf;
FILE *fd = fopen(filename, "rb");
if(fd == NULL)
bug("cannot open '%s'\n", filename);
if(g_debug)
printf("Loading elf file '%s'...\n", filename);
elf_init(&elf);
bool loaded = elf_read_file(&elf, elf_std_read, generic_std_printf, fd);
fclose(fd);
if(!loaded)
bug("error loading elf file '%s'\n", filename);
elf_sort_by_address(&elf);
struct elf_section_t *esec = elf.first_section;
while(esec)
{
if(esec->type == EST_LOAD)
sb1_add_load(sb, esec->section, esec->size, esec->addr);
else if(esec->type == EST_FILL)
sb1_add_fill(sb, esec->pattern, esec->size, esec->addr);
esec = esec->next;
}
int ret = 0;
if(act == SB1_INST_JUMP || act == SB1_INST_CALL)
{
if(!elf.has_start_addr)
bug("Cannot jump/call: '%s' has no start address!\n", filename);
if(act == SB1_INST_JUMP)
ret = sb1_add_jump(sb, elf.start_addr, g_jump_arg);
else
ret = sb1_add_call(sb, elf.start_addr, g_jump_arg);
}
elf_release(&elf);
return ret;
}
