42 const void *llext_loaded_sect_ptr(struct llext_loader *ldr, struct llext *ext, unsigned int sh_ndx)  in llext_loaded_sect_ptr()  argument
44 	enum llext_mem mem_idx = ldr->sect_map[sh_ndx].mem_idx;  in llext_loaded_sect_ptr()
50 	return (const uint8_t *)ext->mem[mem_idx] + ldr->sect_map[sh_ndx].offset;  in llext_loaded_sect_ptr()
57 static int llext_load_elf_data(struct llext_loader *ldr, struct llext *ext)  in llext_load_elf_data()  argument
63 	ret = llext_seek(ldr, 0);  in llext_load_elf_data()
69 	ret = llext_read(ldr, &ldr->hdr, sizeof(ldr->hdr));  in llext_load_elf_data()
76 	if (memcmp(ldr->hdr.e_ident, ELF_MAGIC, sizeof(ELF_MAGIC)) != 0) {  in llext_load_elf_data()
77 		LOG_HEXDUMP_ERR(ldr->hdr.e_ident, 16, "Invalid ELF, magic does not match");  in llext_load_elf_data()
81 	switch (ldr->hdr.e_type) {  in llext_load_elf_data()
91 		LOG_ERR("Unsupported ELF file type %x", ldr->hdr.e_type);  in llext_load_elf_data()
101 	if (ldr->hdr.e_shentsize != sizeof(elf_shdr_t)) {  in llext_load_elf_data()
102 		LOG_ERR("Invalid section header size %d", ldr->hdr.e_shentsize);  in llext_load_elf_data()
106 	ext->sect_cnt = ldr->hdr.e_shnum;  in llext_load_elf_data()
108 	size_t sect_map_sz = ext->sect_cnt * sizeof(ldr->sect_map[0]);  in llext_load_elf_data()
110 	ldr->sect_map = llext_alloc(sect_map_sz);  in llext_load_elf_data()
111 	if (!ldr->sect_map) {  in llext_load_elf_data()
116 		ldr->sect_map[i].mem_idx = LLEXT_MEM_COUNT;  in llext_load_elf_data()
117 		ldr->sect_map[i].offset = 0;  in llext_load_elf_data()
120 	ext->sect_hdrs = (elf_shdr_t *)llext_peek(ldr, ldr->hdr.e_shoff);  in llext_load_elf_data()
133 		ret = llext_seek(ldr, ldr->hdr.e_shoff);  in llext_load_elf_data()
139 		ret = llext_read(ldr, ext->sect_hdrs, sect_hdrs_sz);  in llext_load_elf_data()
152 static int llext_find_tables(struct llext_loader *ldr, struct llext *ext)  in llext_find_tables()  argument
156 	memset(ldr->sects, 0, sizeof(ldr->sects));  in llext_find_tables()
178 			ldr->sects[LLEXT_MEM_SYMTAB] = *shdr;  in llext_find_tables()
179 			ldr->sect_map[i].mem_idx = LLEXT_MEM_SYMTAB;  in llext_find_tables()
183 			if (ldr->hdr.e_shstrndx == i) {  in llext_find_tables()
185 				ldr->sects[LLEXT_MEM_SHSTRTAB] = *shdr;  in llext_find_tables()
186 				ldr->sect_map[i].mem_idx = LLEXT_MEM_SHSTRTAB;  in llext_find_tables()
189 				ldr->sects[LLEXT_MEM_STRTAB] = *shdr;  in llext_find_tables()
190 				ldr->sect_map[i].mem_idx = LLEXT_MEM_STRTAB;  in llext_find_tables()
199 	if (!ldr->sects[LLEXT_MEM_SHSTRTAB].sh_type ||  in llext_find_tables()
200 	    !ldr->sects[LLEXT_MEM_STRTAB].sh_type ||  in llext_find_tables()
201 	    !ldr->sects[LLEXT_MEM_SYMTAB].sh_type) {  in llext_find_tables()
213 static int llext_map_sections(struct llext_loader *ldr, struct llext *ext,  in llext_map_sections()  argument
222 		name = llext_string(ldr, ext, LLEXT_MEM_SHSTRTAB, shdr->sh_name);  in llext_map_sections()
224 		if (ldr->sect_map[i].mem_idx != LLEXT_MEM_COUNT) {  in llext_map_sections()
226 				i, name, ldr->sect_map[i].mem_idx);  in llext_map_sections()
287 		ldr->sect_map[i].mem_idx = mem_idx;  in llext_map_sections()
288 		elf_shdr_t *region = ldr->sects + mem_idx;  in llext_map_sections()
336 			if (ldr->hdr.e_type == ET_DYN) {  in llext_map_sections()
371 			elf_shdr_t *x = ldr->sects + i;  in llext_map_sections()
372 			elf_shdr_t *y = ldr->sects + j;  in llext_map_sections()
398 			if (ldr->hdr.e_type == ET_DYN) {  in llext_map_sections()
442 		enum llext_mem mem_idx = ldr->sect_map[i].mem_idx;  in llext_map_sections()
445 			ldr->sect_map[i].offset = shdr->sh_offset - ldr->sects[mem_idx].sh_offset;  in llext_map_sections()
452 static int llext_count_export_syms(struct llext_loader *ldr, struct llext *ext)  in llext_count_export_syms()  argument
454 	size_t ent_size = ldr->sects[LLEXT_MEM_SYMTAB].sh_entsize;  in llext_count_export_syms()
455 	size_t syms_size = ldr->sects[LLEXT_MEM_SYMTAB].sh_size;  in llext_count_export_syms()
465 	for (i = 0, pos = ldr->sects[LLEXT_MEM_SYMTAB].sh_offset;  in llext_count_export_syms()
473 		ret = llext_seek(ldr, pos);  in llext_count_export_syms()
478 		ret = llext_read(ldr, &sym, ent_size);  in llext_count_export_syms()
487 		name = llext_string(ldr, ext, LLEXT_MEM_STRTAB, sym.st_name);  in llext_count_export_syms()
502 static int llext_allocate_symtab(struct llext_loader *ldr, struct llext *ext)  in llext_allocate_symtab()  argument
517 static int llext_export_symbols(struct llext_loader *ldr, struct llext *ext)  in llext_export_symbols()  argument
519 	elf_shdr_t *shdr = ldr->sects + LLEXT_MEM_EXPORT;  in llext_export_symbols()
547 static int llext_copy_symbols(struct llext_loader *ldr, struct llext *ext,  in llext_copy_symbols()  argument
550 	size_t ent_size = ldr->sects[LLEXT_MEM_SYMTAB].sh_entsize;  in llext_copy_symbols()
551 	size_t syms_size = ldr->sects[LLEXT_MEM_SYMTAB].sh_size;  in llext_copy_symbols()
558 	for (i = 0, pos = ldr->sects[LLEXT_MEM_SYMTAB].sh_offset, j = 0;  in llext_copy_symbols()
566 		ret = llext_seek(ldr, pos);  in llext_copy_symbols()
571 		ret = llext_read(ldr, &sym, ent_size);  in llext_copy_symbols()
582 			const char *name = llext_string(ldr, ext, LLEXT_MEM_STRTAB, sym.st_name);  in llext_copy_symbols()
594 					(ldr->hdr.e_type == ET_REL ? section_addr : 0);  in llext_copy_symbols()
598 				base = llext_loaded_sect_ptr(ldr, ext, shndx);  in llext_copy_symbols()
604 					base = llext_peek(ldr, shdr->sh_offset);  in llext_copy_symbols()
614 					(ldr->hdr.e_type == ET_REL ? 0 : section_addr);  in llext_copy_symbols()
629 int do_llext_load(struct llext_loader *ldr, struct llext *ext,  in do_llext_load()  argument
643 	ldr->sect_map = NULL;  in do_llext_load()
646 	ret = llext_prepare(ldr);  in do_llext_load()
652 	ret = llext_load_elf_data(ldr, ext);  in do_llext_load()
667 	ret = llext_find_tables(ldr, ext);  in do_llext_load()
674 	ret = llext_copy_strings(ldr, ext);  in do_llext_load()
681 	ret = llext_map_sections(ldr, ext, ldr_parm);  in do_llext_load()
688 	ret = llext_copy_regions(ldr, ext, ldr_parm);  in do_llext_load()
695 	ret = llext_count_export_syms(ldr, ext);  in do_llext_load()
702 	ret = llext_allocate_symtab(ldr, ext);  in do_llext_load()
709 	ret = llext_copy_symbols(ldr, ext, ldr_parm);  in do_llext_load()
717 		ret = llext_link(ldr, ext, ldr_parm);  in do_llext_load()
724 	ret = llext_export_symbols(ldr, ext);  in do_llext_load()
738 	llext_free(ldr->sect_map);  in do_llext_load()
739 	ldr->sect_map = NULL;  in do_llext_load()
767 	llext_finalize(ldr);  in do_llext_load()