1 /*-
27 #include <assert.h>
32 ELFTC_VCSID("$Id: libelf_xlate.c 3732 2019-04-22 11:08:38Z jkoshy $");
40  * - an endianness conversion,
41  * - a change of layout, as the file representation of ELF objects
42  *   can differ from their in-memory representation.
43  * - a change in representation due to a layout version change.
52 	uintptr_t sb, se, db, de;  in _libelf_xlate()  local
64 	assert(elfclass == ELFCLASS32 || elfclass == ELFCLASS64);  in _libelf_xlate()
65 	assert(direction == ELF_TOFILE || direction == ELF_TOMEMORY);  in _libelf_xlate()
67 	if (dst->d_version != src->d_version) {  in _libelf_xlate()
72 	if  (src->d_buf == NULL || dst->d_buf == NULL) {  in _libelf_xlate()
77 	if ((int) src->d_type < 0 || src->d_type >= ELF_T_NUM) {  in _libelf_xlate()
83 	    (src->d_type, (size_t) 1, src->d_version)) == 0)  in _libelf_xlate()
86 	if ((msz = _libelf_msize(src->d_type, elfclass, src->d_version)) == 0)  in _libelf_xlate()
89 	if (src->d_size % (direction == ELF_TOMEMORY ? fsz : msz)) {  in _libelf_xlate()
100 		cnt = (size_t) src->d_size / fsz;  in _libelf_xlate()
103 		cnt = (size_t) src->d_size / msz;  in _libelf_xlate()
107 	if (dst->d_size  <  dsz) {  in _libelf_xlate()
112 	sb = (uintptr_t) src->d_buf;  in _libelf_xlate()
113 	se = sb + (size_t) src->d_size;  in _libelf_xlate()
114 	db = (uintptr_t) dst->d_buf;  in _libelf_xlate()
115 	de = db + (size_t) dst->d_size;  in _libelf_xlate()
121 	if (db != sb && de > sb && se > db) {  in _libelf_xlate()
127 	    _libelf_malign(src->d_type, elfclass)) {  in _libelf_xlate()
132 	dst->d_type = src->d_type;  in _libelf_xlate()
133 	dst->d_size = dsz;  in _libelf_xlate()
137 	if (src->d_size == 0 ||  in _libelf_xlate()
141 	xlator = _libelf_get_translator(src->d_type, direction, elfclass,  in _libelf_xlate()
143 	if (!xlator(dst->d_buf, dsz, src->d_buf, cnt, byteswap)) {  in _libelf_xlate()