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Disregard symbols that are not defined with respect to the text section

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This commit is contained in:
Søren Sandmann Pedersen
2009-02-21 02:27:45 -05:00
parent af294337bd
commit 6f939e3eea
1 changed files with 17 additions and 12 deletions
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29
elfparser.c
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@ -431,8 +431,7 @@ read_table (ElfParser *parser,
const Section *str_table) const Section *str_table)
{ {
int sym_size = bin_record_get_size (parser->sym_format); int sym_size = bin_record_get_size (parser->sym_format);
int i; int i, n_symbols;
int n_functions;
parser->n_symbols = sym_table->size / sym_size; parser->n_symbols = sym_table->size / sym_size;
parser->symbols = g_new (ElfSym, parser->n_symbols); parser->symbols = g_new (ElfSym, parser->n_symbols);
@ -443,7 +442,7 @@ read_table (ElfParser *parser,
bin_parser_set_offset (parser->parser, sym_table->offset); bin_parser_set_offset (parser->parser, sym_table->offset);
n_functions = 0; n_symbols = 0;
#if 0 #if 0
g_print ("n syms: %d\n", parser->n_symbols); g_print ("n syms: %d\n", parser->n_symbols);
#endif #endif
@ -452,30 +451,36 @@ read_table (ElfParser *parser,
guint info; guint info;
gulong addr; gulong addr;
gulong offset; gulong offset;
gulong shndx;
info = bin_parser_get_uint_field ( info = bin_parser_get_uint_field (
parser->parser, parser->sym_format, "st_info"); parser->parser, parser->sym_format, "st_info");
addr = bin_parser_get_uint_field ( addr = bin_parser_get_uint_field (
parser->parser, parser->sym_format, "st_value"); parser->parser, parser->sym_format, "st_value");
shndx = bin_parser_get_uint_field (
parser->parser, parser->sym_format, "st_shndx");
offset = bin_parser_get_offset (parser->parser); offset = bin_parser_get_offset (parser->parser);
#if 0 #if 0
g_print ("read symbol: %s\n", get_string_indirect (parser->parser, g_print ("read symbol: %s (section: %d)\n", get_string_indirect (parser->parser,
parser->sym_format, "st_name", parser->sym_format, "st_name",
str_table->offset)); str_table->offset),
shndx);
#endif #endif
if (addr != 0 && if (addr != 0 &&
shndx < parser->n_sections &&
parser->sections[shndx] == parser->text_section &&
(info & 0xf) == STT_FUNC && (info & 0xf) == STT_FUNC &&
((info >> 4) == STB_GLOBAL || ((info >> 4) == STB_GLOBAL ||
(info >> 4) == STB_LOCAL || (info >> 4) == STB_LOCAL ||
(info >> 4) == STB_WEAK) (info >> 4) == STB_WEAK)
) )
{ {
parser->symbols[n_functions].address = addr; parser->symbols[n_symbols].address = addr;
parser->symbols[n_functions].offset = offset; parser->symbols[n_symbols].offset = offset;
n_functions++; n_symbols++;
#if 0 #if 0
g_print (" symbol: %s: %lx\n", g_print (" symbol: %s: %lx\n",
@ -499,7 +504,7 @@ read_table (ElfParser *parser,
} }
parser->sym_strings = str_table->offset; parser->sym_strings = str_table->offset;
parser->n_symbols = n_functions; parser->n_symbols = n_symbols;
parser->symbols = g_renew (ElfSym, parser->symbols, parser->n_symbols); parser->symbols = g_renew (ElfSym, parser->symbols, parser->n_symbols);
qsort (parser->symbols, parser->n_symbols, sizeof (ElfSym), compare_sym); qsort (parser->symbols, parser->n_symbols, sizeof (ElfSym), compare_sym);
@ -649,7 +654,7 @@ elf_parser_get_text_offset (ElfParser *parser)
} }
static gchar * static gchar *
make_hex_string (const guchar *data, int n_bytes) make_hex_string (const gchar *data, int n_bytes)
{ {
static const char hex_digits[] = { static const char hex_digits[] = {
'0', '1', '2', '3', '4', '5', '6', '7', '0', '1', '2', '3', '4', '5', '6', '7',