stand/common/load_elf_obj.c

65 #define VECTX_HANDLE(ef) (ef)->vctx
67 #define VECTX_HANDLE(ef) (ef)->fd
70 static int __elfN(obj_loadimage)(struct preloaded_file *mp, elf_file_t ef,
72 static int __elfN(obj_lookup_set)(struct preloaded_file *mp, elf_file_t ef,
74 static int __elfN(obj_reloc_ptr)(struct preloaded_file *mp, elf_file_t ef,
77     elf_file_t ef);
78 static Elf_Addr __elfN(obj_symaddr)(struct elf_file *ef, Elf_Size symidx);
93 	struct elf_file	ef;
99 	bzero(&ef, sizeof(struct elf_file));
106 	if ((ef.fd = open(filename, O_RDONLY)) == -1)
112 		ef.vctx = vectx_open(ef.fd, filename, 0L, NULL, &verror, __func__);
115 			close(ef.fd);
116 			free(ef.vctx);
122 	hdr = &ef.hdr;
123 	bytes_read = VECTX_READ(VECTX_HANDLE(&ef), hdr, sizeof(*hdr));
151 	if (verify_file(ef.fd, filename, bytes_read, VE_MUST, __func__) < 0) {
186 	fp->f_size = __elfN(obj_loadimage)(fp, &ef, dest);
204 	if (!err && ef.vctx) {
207 		verror = vectx_close(ef.vctx, VE_MUST, __func__);
214 	close(ef.fd);
215 	if (ef.e_shdr != NULL)
216 		free(ef.e_shdr);
226 __elfN(obj_loadimage)(struct preloaded_file *fp, elf_file_t ef, uint64_t off)
235 	hdr = &ef->hdr;
236 	ef->off = (vm_offset_t)off;
240 	shdr = alloc_pread(VECTX_HANDLE(ef), (off_t)hdr->e_shoff, shdrbytes);
246 	ef->e_shdr = shdr;
281 			ef->symtabindex = i;
290 	lastaddr = roundup(lastaddr, shdr[ef->symtabindex].sh_addralign);
291 	shdr[ef->symtabindex].sh_addr = (Elf_Addr)lastaddr;
292 	lastaddr += shdr[ef->symtabindex].sh_size;
294 	symstrindex = shdr[ef->symtabindex].sh_link;
312 	ef->shstrindex = hdr->e_shstrndx;
313 	lastaddr = roundup(lastaddr, shdr[ef->shstrindex].sh_addralign);
314 	shdr[ef->shstrindex].sh_addr = (Elf_Addr)lastaddr;
315 	lastaddr += shdr[ef->shstrindex].sh_size;
361 		if (kern_pread(VECTX_HANDLE(ef), (vm_offset_t)cshdr->sh_addr,
371 	res = __elfN(obj_parse_modmetadata)(fp, ef);
397 __elfN(obj_parse_modmetadata)(struct preloaded_file *fp, elf_file_t ef)
409 	if (__elfN(obj_lookup_set)(fp, ef, "modmetadata_set", &p, &p_stop,
416 		error = __elfN(obj_reloc_ptr)(fp, ef, p, &v, sizeof(v));
421 		error = __elfN(obj_reloc_ptr)(fp, ef, v, &md64, sizeof(md64));
430 		error = __elfN(obj_reloc_ptr)(fp, ef, v, &md, sizeof(md));
469 __elfN(obj_lookup_set)(struct preloaded_file *fp, elf_file_t ef,
478 	hdr = &ef->hdr;
479 	shdr = ef->e_shdr;
480 	shstrtab = shdr[ef->shstrindex].sh_addr;
507 __elfN(obj_reloc_ptr)(struct preloaded_file *mp, elf_file_t ef, Elf_Addr p,
518 	hdr = &ef->hdr;
519 	shdr = ef->e_shdr;
539 				error = __elfN(reloc)(ef, __elfN(obj_symaddr),
552 				error = __elfN(reloc)(ef, __elfN(obj_symaddr),
565 __elfN(obj_symaddr)(struct elf_file *ef, Elf_Size symidx)
570 	if (symidx >= ef->e_shdr[ef->symtabindex].sh_size / sizeof(Elf_Sym))
572 	COPYOUT(ef->e_shdr[ef->symtabindex].sh_addr + symidx * sizeof(Elf_Sym),
574 	if (sym.st_shndx == SHN_UNDEF || sym.st_shndx >= ef->hdr.e_shnum)
576 	base = ef->e_shdr[sym.st_shndx].sh_addr;