/**
* Obtain the information of dynamic symbol (library call)
*/
dyn_functions_t *get_synthetic_symbols(const char *filename) {
asymbol** syms = NULL;
long symcount = 0;
asymbol** dynsyms = NULL;
long dynsymcount = 0;
asymbol* synthsyms = NULL;
long synthcount = 0;
long storage;
vector<dyn_function_t *> *ret = new vector<dyn_function_t *>();
asm_program_t *prog = new asm_program_t;
bfd *abfd = initialize_bfd(filename);
initialize_sections(abfd, prog);
if (bfd_get_file_flags (abfd) & HAS_SYMS) {
storage = bfd_get_symtab_upper_bound (abfd);
assert (storage >= 0);
if (storage > 0)
syms = (asymbol**) xmalloc(storage);
symcount = bfd_canonicalize_symtab (abfd, syms);
assert (symcount >= 0);
}
storage = bfd_get_dynamic_symtab_upper_bound (abfd);
if (storage > 0) {
dynsyms = (asymbol**) xmalloc(storage);
dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, dynsyms);
}
synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
dynsymcount, dynsyms, &synthsyms);
if (synthcount < 0)
synthcount = 0;
for (int i=0; i<synthcount; ++i) {
dyn_function_t *temp = new dyn_function_t;
temp->name = string(bfd_asymbol_name(&(synthsyms[i])));
temp->addr = bfd_asymbol_value(&(synthsyms[i]));
ret->push_back(temp);
}
if (synthsyms)
free(synthsyms);
if (dynsyms)
free(dynsyms);
if (syms)
free(syms);
bfd_close(abfd);
return ret;
}
void
core_init (const char * aout_name)
{
int core_sym_bytes;
asymbol *synthsyms;
long synth_count;
core_bfd = bfd_openr (aout_name, 0);
if (!core_bfd)
{
perror (aout_name);
done (1);
}
if (!bfd_check_format (core_bfd, bfd_object))
{
fprintf (stderr, _("%s: %s: not in executable format\n"), whoami, aout_name);
done (1);
}
/* Get core's text section. */
core_text_sect = bfd_get_section_by_name (core_bfd, ".text");
if (!core_text_sect)
{
core_text_sect = bfd_get_section_by_name (core_bfd, "$CODE$");
if (!core_text_sect)
{
fprintf (stderr, _("%s: can't find .text section in %s\n"),
whoami, aout_name);
done (1);
}
}
/* Read core's symbol table. */
/* This will probably give us more than we need, but that's ok. */
core_sym_bytes = bfd_get_symtab_upper_bound (core_bfd);
if (core_sym_bytes < 0)
{
fprintf (stderr, "%s: %s: %s\n", whoami, aout_name,
bfd_errmsg (bfd_get_error ()));
done (1);
}
core_syms = (asymbol **) xmalloc (core_sym_bytes);
core_num_syms = bfd_canonicalize_symtab (core_bfd, core_syms);
if (core_num_syms < 0)
{
fprintf (stderr, "%s: %s: %s\n", whoami, aout_name,
bfd_errmsg (bfd_get_error ()));
done (1);
}
synth_count = bfd_get_synthetic_symtab (core_bfd, core_num_syms, core_syms,
0, NULL, &synthsyms);
if (synth_count > 0)
{
asymbol **symp;
long new_size;
long i;
new_size = (core_num_syms + synth_count + 1) * sizeof (*core_syms);
core_syms = (asymbol **) xrealloc (core_syms, new_size);
symp = core_syms + core_num_syms;
core_num_syms += synth_count;
for (i = 0; i < synth_count; i++)
*symp++ = synthsyms + i;
*symp = 0;
}
min_insn_size = 1;
offset_to_code = 0;
switch (bfd_get_arch (core_bfd))
{
case bfd_arch_vax:
case bfd_arch_tahoe:
offset_to_code = 2;
break;
case bfd_arch_alpha:
min_insn_size = 4;
break;
default:
break;
}
if (function_mapping_file)
read_function_mappings (function_mapping_file);
}
vine_symbols_t * get_symbols_of_file(const char *filename)
{
asymbol** syms = NULL;
long symcount = 0;
long sorted_symcount = 0;
asymbol** dynsyms = NULL;
long dynsymcount = 0;
asymbol* synthsyms = NULL;
long synthcount = 0;
long storage;
vector<vine_symbol_t *> *ret = new vector<vine_symbol_t *>();
// asm_program_t *prog = new asm_program_t;
// printf("initializing bfd\n\n");
bfd *abfd = initialize_bfd(filename);
// printf("done\n\n");
// printf("initializing sections...\n\n");
// initialize_sections(abfd, prog);
// printf("done\n\n");
asymbol *sym;
if (bfd_get_file_flags (abfd) & HAS_SYMS) {
storage = bfd_get_symtab_upper_bound (abfd);
assert (storage >= 0);
if (storage > 0)
syms = (asymbol**) xmalloc(storage);
symcount = bfd_canonicalize_symtab (abfd, syms);
assert (symcount >= 0);
sorted_symcount = remove_useless_symbols(syms, symcount);
qsort(syms, sorted_symcount, sizeof(asymbol *), compare_symbols);
for(int i= 0; i < sorted_symcount; i++){
vine_symbol_t *temp = new vine_symbol_t;
temp->name = string(bfd_asymbol_name((syms[i])));
temp->addr = bfd_asymbol_value((syms[i]));
sym = syms[i];
temp->is_function = (sym->flags & BSF_FUNCTION) != 0;
temp->is_dynamic = 0;
ret->push_back(temp);
}
}
storage = bfd_get_dynamic_symtab_upper_bound (abfd);
if (storage > 0) {
dynsyms = (asymbol**) xmalloc(storage);
dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, dynsyms);
}
synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
dynsymcount, dynsyms, &synthsyms);
if (synthcount < 0)
synthcount = 0;
for (int i=0; i<synthcount; i++) {
vine_symbol_t *temp = new vine_symbol_t;
temp->name = string(bfd_asymbol_name(&(synthsyms[i])));
temp->addr = bfd_asymbol_value(&(synthsyms[i]));
temp->is_function = (synthsyms[i].flags & BSF_FUNCTION) != 0;
temp->is_dynamic = 1;
ret->push_back(temp);
}
if (synthsyms)
free(synthsyms);
if (dynsyms)
free(dynsyms);
if (syms)
free(syms);
bfd_close(abfd);
return ret;
}
/*
* Implementation
*/
void
jit_init_debug(const char *progname)
{
#if DISASSEMBLER
bfd_init();
if (progname)
disasm_bfd = bfd_openr(progname, NULL);
if (disasm_bfd == NULL) {
#if defined(__linux__)
disasm_bfd = bfd_openr("/proc/self/exe", NULL);
if (disasm_bfd == NULL)
#endif
return;
}
bfd_check_format(disasm_bfd, bfd_object);
bfd_check_format(disasm_bfd, bfd_archive);
disasm_print = disassembler(disasm_bfd);
assert(disasm_print);
INIT_DISASSEMBLE_INFO(disasm_info, disasm_stream, fprintf);
# if defined(__i386__) || defined(__x86_64__)
disasm_info.arch = bfd_arch_i386;
# if defined(__x86_64__)
# if __WORDSIZE == 32
disasm_info.mach = bfd_mach_x64_32;
# else
disasm_info.mach = bfd_mach_x86_64;
# endif
# else
disasm_info.mach = bfd_mach_i386_i386;
# endif
# endif
# if defined(__powerpc__)
disasm_info.arch = bfd_arch_powerpc;
disasm_info.mach = bfd_mach_ppc64;
# if HAVE_DISASSEMBLE_INIT_FOR_TARGET
disassemble_init_for_target(&disasm_info);
# elif HAVE_DISASSEMBLE_INIT_POWERPC
disassemble_init_powerpc(&disasm_info);
# endif
# if defined(__powerpc64__)
disasm_info.disassembler_options = "64";
# endif
# if HAVE_DISASSEMBLE_INIT_FOR_TARGET
disassemble_init_for_target(&disasm_info);
# elif HAVE_DISASSEMBLE_INIT_POWERPC
disassemble_init_powerpc(&disasm_info);
# endif
# endif
# if defined(__sparc__)
disasm_info.endian = disasm_info.display_endian = BFD_ENDIAN_BIG;
# endif
# if defined(__s390__) || defined(__s390x__)
disasm_info.arch = bfd_arch_s390;
# if __WORDSIZE == 32
disasm_info.mach = bfd_mach_s390_31;
# else
disasm_info.mach = bfd_mach_s390_64;
# endif
disasm_info.endian = disasm_info.display_endian = BFD_ENDIAN_BIG;
disasm_info.disassembler_options = "zarch";
# endif
# if defined(__alpha__)
disasm_info.arch = bfd_arch_alpha;
disasm_info.mach = bfd_mach_alpha_ev6;
# endif
disasm_info.print_address_func = disasm_print_address;
if (bfd_get_file_flags(disasm_bfd) & HAS_SYMS) {
asymbol **in;
asymbol **out;
asymbol *symbol;
long offset;
long sym_count;
long dyn_count;
long sym_storage;
long dyn_storage;
if ((sym_storage = bfd_get_symtab_upper_bound(disasm_bfd)) >= 0) {
if (bfd_get_file_flags(disasm_bfd) & DYNAMIC) {
dyn_storage = bfd_get_dynamic_symtab_upper_bound(disasm_bfd);
# if defined(__alpha__)
/* XXX */
if (dyn_storage < 0)
dyn_storage = 0;
# else
assert(dyn_storage >= 0);
# endif
}
else
dyn_storage = 0;
jit_alloc((jit_pointer_t *)&disasm_symbols,
(sym_storage + dyn_storage) * sizeof(asymbol *));
sym_count = bfd_canonicalize_symtab(disasm_bfd, disasm_symbols);
assert(sym_count >= 0);
if (dyn_storage) {
dyn_count = bfd_canonicalize_dynamic_symtab(disasm_bfd,
disasm_symbols +
sym_count);
assert(dyn_count >= 0);
}
else
dyn_count = 0;
disasm_num_symbols = sym_count + dyn_count;
disasm_num_synthetic = bfd_get_synthetic_symtab(disasm_bfd,
sym_count,
disasm_symbols,
dyn_count,
disasm_symbols +
sym_count,
&disasm_synthetic);
if (disasm_num_synthetic > 0) {
jit_realloc((jit_pointer_t *)&disasm_symbols,
(sym_storage + dyn_storage) * sizeof(asymbol *),
(sym_storage + dyn_storage + disasm_num_synthetic) *
sizeof(asymbol *));
for (offset = 0; offset < disasm_num_synthetic; offset++)
disasm_symbols[disasm_num_symbols++] =
disasm_synthetic + offset;
}
/* remove symbols not useful for disassemble */
in = out = disasm_symbols;
for (offset = 0; offset < disasm_num_symbols; offset++) {
symbol = *in++;
if (symbol->name &&
symbol->name[0] != '\0' &&
!(symbol->flags & (BSF_DEBUGGING | BSF_SECTION_SYM)) &&
!bfd_is_und_section(symbol->section) &&
!bfd_is_com_section(symbol->section))
*out++ = symbol;
}
disasm_num_symbols = out - disasm_symbols;
qsort(disasm_symbols, disasm_num_symbols,
sizeof(asymbol *), disasm_compare_symbols);
}
}
#endif
}
