summaryrefslogtreecommitdiff
path: root/ext/libelf/gelf_sym.c
diff options
context:
space:
mode:
authorNathan Binkert <binkertn@umich.edu>2007-05-26 18:15:22 -0700
committerNathan Binkert <binkertn@umich.edu>2007-05-26 18:15:22 -0700
commit4f0f217c1b6a8c888ff8a1c60d1eb36cbdf14490 (patch)
treead4f2696a1ada8f8a3e63bb4830f8011d6d25593 /ext/libelf/gelf_sym.c
parent44ebb8d3e27329e9f0b501897585359b4ab696f2 (diff)
downloadgem5-4f0f217c1b6a8c888ff8a1c60d1eb36cbdf14490.tar.xz
Get rid of GNU libelf and its autoconf nastiness and replace
it with FreeBSD's implementation --HG-- extra : convert_revision : ef9c4551b9a6b54b76a89f286ff9804c55790621
Diffstat (limited to 'ext/libelf/gelf_sym.c')
-rw-r--r--ext/libelf/gelf_sym.c151
1 files changed, 151 insertions, 0 deletions
diff --git a/ext/libelf/gelf_sym.c b/ext/libelf/gelf_sym.c
new file mode 100644
index 000000000..78c8a087c
--- /dev/null
+++ b/ext/libelf/gelf_sym.c
@@ -0,0 +1,151 @@
+/*-
+ * Copyright (c) 2006 Joseph Koshy
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <limits.h>
+
+#include <assert.h>
+#include "gelf.h"
+
+#include "_libelf.h"
+
+GElf_Sym *
+gelf_getsym(Elf_Data *d, int ndx, GElf_Sym *dst)
+{
+ int ec;
+ Elf *e;
+ Elf_Scn *scn;
+ Elf32_Sym *sym32;
+ Elf64_Sym *sym64;
+ size_t msz;
+ uint32_t sh_type;
+
+ if (d == NULL || ndx < 0 || dst == NULL ||
+ (scn = d->d_scn) == NULL ||
+ (e = scn->s_elf) == NULL) {
+ LIBELF_SET_ERROR(ARGUMENT, 0);
+ return (NULL);
+ }
+
+ ec = e->e_class;
+ assert(ec == ELFCLASS32 || ec == ELFCLASS64);
+
+ if (ec == ELFCLASS32)
+ sh_type = scn->s_shdr.s_shdr32.sh_type;
+ else
+ sh_type = scn->s_shdr.s_shdr64.sh_type;
+
+ if (_libelf_xlate_shtype(sh_type) != ELF_T_SYM) {
+ LIBELF_SET_ERROR(ARGUMENT, 0);
+ return (NULL);
+ }
+
+ msz = _libelf_msize(ELF_T_SYM, ec, e->e_version);
+
+ assert(msz > 0);
+
+ if (msz * ndx >= d->d_size) {
+ LIBELF_SET_ERROR(ARGUMENT, 0);
+ return (NULL);
+ }
+
+ if (ec == ELFCLASS32) {
+
+ sym32 = (Elf32_Sym *) d->d_buf + ndx;
+
+ dst->st_name = sym32->st_name;
+ dst->st_value = (Elf64_Addr) sym32->st_value;
+ dst->st_size = (Elf64_Xword) sym32->st_size;
+ dst->st_info = ELF64_ST_INFO(ELF32_ST_BIND(sym32->st_info),
+ ELF32_ST_TYPE(sym32->st_info));
+ dst->st_other = sym32->st_other;
+ dst->st_shndx = sym32->st_shndx;
+ } else {
+
+ sym64 = (Elf64_Sym *) d->d_buf + ndx;
+
+ *dst = *sym64;
+ }
+
+ return (dst);
+}
+
+int
+gelf_update_sym(Elf_Data *d, int ndx, GElf_Sym *gs)
+{
+ int ec;
+ Elf *e;
+ Elf_Scn *scn;
+ Elf32_Sym *sym32;
+ Elf64_Sym *sym64;
+ size_t msz;
+ uint32_t sh_type;
+
+ if (d == NULL || ndx < 0 || gs == NULL ||
+ (scn = d->d_scn) == NULL ||
+ (e = scn->s_elf) == NULL) {
+ LIBELF_SET_ERROR(ARGUMENT, 0);
+ return (0);
+ }
+
+ ec = e->e_class;
+ assert(ec == ELFCLASS32 || ec == ELFCLASS64);
+
+ if (ec == ELFCLASS32)
+ sh_type = scn->s_shdr.s_shdr32.sh_type;
+ else
+ sh_type = scn->s_shdr.s_shdr64.sh_type;
+
+ if (_libelf_xlate_shtype(sh_type) != ELF_T_SYM) {
+ LIBELF_SET_ERROR(ARGUMENT, 0);
+ return (0);
+ }
+
+ msz = _libelf_msize(ELF_T_SYM, ec, e->e_version);
+ assert(msz > 0);
+
+ if (msz * ndx >= d->d_size) {
+ LIBELF_SET_ERROR(ARGUMENT, 0);
+ return (0);
+ }
+
+ if (ec == ELFCLASS32) {
+ sym32 = (Elf32_Sym *) d->d_buf + ndx;
+
+ sym32->st_name = gs->st_name;
+ sym32->st_info = gs->st_info;
+ sym32->st_other = gs->st_other;
+ sym32->st_shndx = gs->st_shndx;
+
+ LIBELF_COPY_U32(sym32, gs, st_value);
+ LIBELF_COPY_U32(sym32, gs, st_size);
+ } else {
+ sym64 = (Elf64_Sym *) d->d_buf + ndx;
+
+ *sym64 = *gs;
+ }
+
+ return (1);
+}