--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/elf4rom/libs/libelf-0.8.10/lib/gelftrans.c Fri Jan 15 09:07:44 2010 +0000
@@ -0,0 +1,407 @@
+/*
+gelftrans.c - gelf_* translation functions.
+Copyright (C) 2000 - 2001 Michael Riepe
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <private.h>
+
+#if __LIBELF64
+
+#ifndef lint
+static const char rcsid[] = "@(#) $Id: gelftrans.c,v 1.9 2005/05/21 15:39:23 michael Exp $";
+#endif /* lint */
+
+#define check_and_copy(type, d, s, name, eret) \
+ do { \
+ if (sizeof((d)->name) < sizeof((s)->name) \
+ && (type)(s)->name != (s)->name) { \
+ seterr(ERROR_BADVALUE); \
+ return (eret); \
+ } \
+ (d)->name = (type)(s)->name; \
+ } while (0)
+
+/*
+ * These macros are missing on some Linux systems
+ */
+#if !defined(ELF32_R_SYM) || !defined(ELF32_R_TYPE) || !defined(ELF32_R_INFO)
+# undef ELF32_R_SYM
+# undef ELF32_R_TYPE
+# undef ELF32_R_INFO
+# define ELF32_R_SYM(i) ((i)>>8)
+# define ELF32_R_TYPE(i) ((unsigned char)(i))
+# define ELF32_R_INFO(s,t) (((s)<<8)+(unsigned char)(t))
+#endif /* !defined(...) */
+
+#if !defined(ELF64_R_SYM) || !defined(ELF64_R_TYPE) || !defined(ELF64_R_INFO)
+# undef ELF64_R_SYM
+# undef ELF64_R_TYPE
+# undef ELF64_R_INFO
+# define ELF64_R_SYM(i) ((i)>>32)
+# define ELF64_R_TYPE(i) ((i)&0xffffffffL)
+# define ELF64_R_INFO(s,t) (((Elf64_Xword)(s)<<32)+((t)&0xffffffffL))
+#endif /* !defined(...) */
+
+static char*
+get_addr_and_class(const Elf_Data *data, int ndx, Elf_Type type, unsigned *cls) {
+ Scn_Data *sd = (Scn_Data*)data;
+ Elf_Scn *scn;
+ Elf *elf;
+ size_t n;
+
+ if (!sd) {
+ return NULL;
+ }
+ elf_assert(sd->sd_magic == DATA_MAGIC);
+ scn = sd->sd_scn;
+ elf_assert(scn);
+ elf_assert(scn->s_magic == SCN_MAGIC);
+ elf = scn->s_elf;
+ elf_assert(elf);
+ elf_assert(elf->e_magic == ELF_MAGIC);
+ if (elf->e_kind != ELF_K_ELF) {
+ seterr(ERROR_NOTELF);
+ return NULL;
+ }
+ if (!valid_class(elf->e_class)) {
+ seterr(ERROR_UNKNOWN_CLASS);
+ return NULL;
+ }
+ if (data->d_type != type) {
+ seterr(ERROR_BADTYPE);
+ return NULL;
+ }
+ n = _msize(elf->e_class, data->d_version, type);
+ if (n == 0) {
+ seterr(ERROR_UNIMPLEMENTED);
+ return NULL;
+ }
+ if (ndx < 0 || data->d_size < (ndx + 1) * n) {
+ seterr(ERROR_BADINDEX);
+ return NULL;
+ }
+ if (!data->d_buf) {
+ seterr(ERROR_NULLBUF);
+ return NULL;
+ }
+ if (cls) {
+ *cls = elf->e_class;
+ }
+ return (char*)data->d_buf + n * ndx;
+}
+
+GElf_Sym*
+gelf_getsym(Elf_Data *src, int ndx, GElf_Sym *dst) {
+ GElf_Sym buf;
+ unsigned cls;
+ char *tmp;
+
+ if (!dst) {
+ dst = &buf;
+ }
+ tmp = get_addr_and_class(src, ndx, ELF_T_SYM, &cls);
+ if (!tmp) {
+ return NULL;
+ }
+ if (cls == ELFCLASS64) {
+ *dst = *(Elf64_Sym*)tmp;
+ }
+ else if (cls == ELFCLASS32) {
+ Elf32_Sym *src = (Elf32_Sym*)tmp;
+
+ check_and_copy(GElf_Word, dst, src, st_name, NULL);
+ check_and_copy(unsigned char, dst, src, st_info, NULL);
+ check_and_copy(unsigned char, dst, src, st_other, NULL);
+ check_and_copy(GElf_Half, dst, src, st_shndx, NULL);
+ check_and_copy(GElf_Addr, dst, src, st_value, NULL);
+ check_and_copy(GElf_Xword, dst, src, st_size, NULL);
+ }
+ else {
+ seterr(ERROR_UNIMPLEMENTED);
+ return NULL;
+ }
+ if (dst == &buf) {
+ dst = (GElf_Sym*)malloc(sizeof(GElf_Sym));
+ if (!dst) {
+ seterr(ERROR_MEM_SYM);
+ return NULL;
+ }
+ *dst = buf;
+ }
+ return dst;
+}
+
+int
+gelf_update_sym(Elf_Data *dst, int ndx, GElf_Sym *src) {
+ unsigned cls;
+ char *tmp;
+
+ tmp = get_addr_and_class(dst, ndx, ELF_T_SYM, &cls);
+ if (!tmp) {
+ return 0;
+ }
+ if (cls == ELFCLASS64) {
+ *(Elf64_Sym*)tmp = *src;
+ }
+ else if (cls == ELFCLASS32) {
+ Elf32_Sym *dst = (Elf32_Sym*)tmp;
+
+ check_and_copy(Elf32_Word, dst, src, st_name, 0);
+ check_and_copy(Elf32_Addr, dst, src, st_value, 0);
+ check_and_copy(Elf32_Word, dst, src, st_size, 0);
+ check_and_copy(unsigned char, dst, src, st_info, 0);
+ check_and_copy(unsigned char, dst, src, st_other, 0);
+ check_and_copy(Elf32_Half, dst, src, st_shndx, 0);
+ }
+ else {
+ seterr(ERROR_UNIMPLEMENTED);
+ return 0;
+ }
+ return 1;
+}
+
+GElf_Dyn*
+gelf_getdyn(Elf_Data *src, int ndx, GElf_Dyn *dst) {
+ GElf_Dyn buf;
+ unsigned cls;
+ char *tmp;
+
+ if (!dst) {
+ dst = &buf;
+ }
+ tmp = get_addr_and_class(src, ndx, ELF_T_DYN, &cls);
+ if (!tmp) {
+ return NULL;
+ }
+ if (cls == ELFCLASS64) {
+ *dst = *(Elf64_Dyn*)tmp;
+ }
+ else if (cls == ELFCLASS32) {
+ Elf32_Dyn *src = (Elf32_Dyn*)tmp;
+
+ check_and_copy(GElf_Sxword, dst, src, d_tag, NULL);
+ check_and_copy(GElf_Xword, dst, src, d_un.d_val, NULL);
+ }
+ else {
+ seterr(ERROR_UNIMPLEMENTED);
+ return NULL;
+ }
+ if (dst == &buf) {
+ dst = (GElf_Dyn*)malloc(sizeof(GElf_Dyn));
+ if (!dst) {
+ seterr(ERROR_MEM_DYN);
+ return NULL;
+ }
+ *dst = buf;
+ }
+ return dst;
+}
+
+int
+gelf_update_dyn(Elf_Data *dst, int ndx, GElf_Dyn *src) {
+ unsigned cls;
+ char *tmp;
+
+ tmp = get_addr_and_class(dst, ndx, ELF_T_DYN, &cls);
+ if (!tmp) {
+ return 0;
+ }
+ if (cls == ELFCLASS64) {
+ *(Elf64_Dyn*)tmp = *src;
+ }
+ else if (cls == ELFCLASS32) {
+ Elf32_Dyn *dst = (Elf32_Dyn*)tmp;
+
+ check_and_copy(Elf32_Sword, dst, src, d_tag, 0);
+ check_and_copy(Elf32_Word, dst, src, d_un.d_val, 0);
+ }
+ else {
+ seterr(ERROR_UNIMPLEMENTED);
+ return 0;
+ }
+ return 1;
+}
+
+GElf_Rela*
+gelf_getrela(Elf_Data *src, int ndx, GElf_Rela *dst) {
+ GElf_Rela buf;
+ unsigned cls;
+ char *tmp;
+
+ if (!dst) {
+ dst = &buf;
+ }
+ tmp = get_addr_and_class(src, ndx, ELF_T_RELA, &cls);
+ if (!tmp) {
+ return NULL;
+ }
+ if (cls == ELFCLASS64) {
+ *dst = *(Elf64_Rela*)tmp;
+ }
+ else if (cls == ELFCLASS32) {
+ Elf32_Rela *src = (Elf32_Rela*)tmp;
+
+ check_and_copy(GElf_Addr, dst, src, r_offset, NULL);
+ dst->r_info = ELF64_R_INFO((Elf64_Xword)ELF32_R_SYM(src->r_info),
+ (Elf64_Xword)ELF32_R_TYPE(src->r_info));
+ check_and_copy(GElf_Sxword, dst, src, r_addend, NULL);
+ }
+ else {
+ seterr(ERROR_UNIMPLEMENTED);
+ return NULL;
+ }
+ if (dst == &buf) {
+ dst = (GElf_Rela*)malloc(sizeof(GElf_Rela));
+ if (!dst) {
+ seterr(ERROR_MEM_RELA);
+ return NULL;
+ }
+ *dst = buf;
+ }
+ return dst;
+}
+
+int
+gelf_update_rela(Elf_Data *dst, int ndx, GElf_Rela *src) {
+ unsigned cls;
+ char *tmp;
+
+ tmp = get_addr_and_class(dst, ndx, ELF_T_RELA, &cls);
+ if (!tmp) {
+ return 0;
+ }
+ if (cls == ELFCLASS64) {
+ *(Elf64_Rela*)tmp = *src;
+ }
+ else if (cls == ELFCLASS32) {
+ Elf32_Rela *dst = (Elf32_Rela*)tmp;
+
+ check_and_copy(Elf32_Addr, dst, src, r_offset, 0);
+ if (ELF64_R_SYM(src->r_info) > 0xffffffUL
+ || ELF64_R_TYPE(src->r_info) > 0xffUL) {
+ seterr(ERROR_BADVALUE);
+ return 0;
+ }
+ dst->r_info = ELF32_R_INFO((Elf32_Word)ELF64_R_SYM(src->r_info),
+ (Elf32_Word)ELF64_R_TYPE(src->r_info));
+ check_and_copy(Elf32_Sword, dst, src, r_addend, 0);
+ }
+ else {
+ seterr(ERROR_UNIMPLEMENTED);
+ return 0;
+ }
+ return 1;
+}
+
+GElf_Rel*
+gelf_getrel(Elf_Data *src, int ndx, GElf_Rel *dst) {
+ GElf_Rel buf;
+ unsigned cls;
+ char *tmp;
+
+ if (!dst) {
+ dst = &buf;
+ }
+ tmp = get_addr_and_class(src, ndx, ELF_T_REL, &cls);
+ if (!tmp) {
+ return NULL;
+ }
+ if (cls == ELFCLASS64) {
+ *dst = *(Elf64_Rel*)tmp;
+ }
+ else if (cls == ELFCLASS32) {
+ Elf32_Rel *src = (Elf32_Rel*)tmp;
+
+ check_and_copy(GElf_Addr, dst, src, r_offset, NULL);
+ dst->r_info = ELF64_R_INFO((Elf64_Xword)ELF32_R_SYM(src->r_info),
+ (Elf64_Xword)ELF32_R_TYPE(src->r_info));
+ }
+ else {
+ seterr(ERROR_UNIMPLEMENTED);
+ return NULL;
+ }
+ if (dst == &buf) {
+ dst = (GElf_Rel*)malloc(sizeof(GElf_Rel));
+ if (!dst) {
+ seterr(ERROR_MEM_REL);
+ return NULL;
+ }
+ *dst = buf;
+ }
+ return dst;
+}
+
+int
+gelf_update_rel(Elf_Data *dst, int ndx, GElf_Rel *src) {
+ unsigned cls;
+ char *tmp;
+
+ tmp = get_addr_and_class(dst, ndx, ELF_T_REL, &cls);
+ if (!tmp) {
+ return 0;
+ }
+ if (cls == ELFCLASS64) {
+ *(Elf64_Rel*)tmp = *src;
+ }
+ else if (cls == ELFCLASS32) {
+ Elf32_Rel *dst = (Elf32_Rel*)tmp;
+
+ check_and_copy(Elf32_Addr, dst, src, r_offset, 0);
+ if (ELF64_R_SYM(src->r_info) > 0xffffffUL
+ || ELF64_R_TYPE(src->r_info) > 0xffUL) {
+ seterr(ERROR_BADVALUE);
+ return 0;
+ }
+ dst->r_info = ELF32_R_INFO((Elf32_Word)ELF64_R_SYM(src->r_info),
+ (Elf32_Word)ELF64_R_TYPE(src->r_info));
+ }
+ else {
+ seterr(ERROR_UNIMPLEMENTED);
+ return 0;
+ }
+ return 1;
+}
+
+#if 0
+
+GElf_Syminfo*
+gelf_getsyminfo(Elf_Data *src, int ndx, GElf_Syminfo *dst) {
+ seterr(ERROR_UNIMPLEMENTED);
+ return NULL;
+}
+
+int
+gelf_update_syminfo(Elf_Data *dst, int ndx, GElf_Syminfo *src) {
+ seterr(ERROR_UNIMPLEMENTED);
+ return 0;
+}
+
+GElf_Move*
+gelf_getmove(Elf_Data *src, int ndx, GElf_Move *src) {
+ seterr(ERROR_UNIMPLEMENTED);
+ return NULL;
+}
+
+int
+gelf_update_move(Elf_Data *dst, int ndx, GElf_Move *src) {
+ seterr(ERROR_UNIMPLEMENTED);
+ return 0;
+}
+
+#endif
+
+#endif /* __LIBELF64 */