/*
* Print name of symbol. Return number of characters printed.
*/
int
print_name_only (Sym *self)
{
const char *name = self->name;
const char *filename;
char *demangled = 0;
char buf[PATH_MAX];
int size = 0;
if (name)
{
if (!bsd_style_output && demangle)
{
demangled = bfd_demangle (core_bfd[0], name, DMGL_ANSI | DMGL_PARAMS);
if (demangled)
name = demangled;
}
printf ("%s", name);
size = strlen (name);
if (line_granularity && self->file)
{
filename = self->file->name;
if (!print_path)
{
filename = strrchr (filename, '/');
if (filename)
{
++filename;
}
else
{
filename = self->file->name;
}
}
sprintf (buf, " (%s:%d @ %lx)", filename, self->line_num,
(unsigned long) self->addr);
printf ("%s", buf);
size += strlen (buf);
}
if (demangled)
{
free (demangled);
}
DBG (DFNDEBUG, printf ("{%d} ", self->cg.top_order));
DBG (PROPDEBUG, printf ("%4.0f%% ", 100.0 * self->cg.prop.fract));
}
return size;
}
int BFDmanager_translateAddress (bfd *bfdImage, asymbol **bfdSymbols,
void *address, char **function, char **file, int *line)
{
BFDmanager_symbolInfo_t syminfo;
char caddress[32];
#if defined(DEBUG)
printf ("DEBUG: BFDmanager_translateAddress (%p, %p, address = %p)\n", bfdImage, bfdSymbols, address);
#endif
syminfo.found = FALSE;
if (bfdImage && bfdSymbols)
{
/* Convert the address into hexadecimal string format */
sprintf (caddress, "%p", address);
/* Prepare the query for BFD */
syminfo.pc = bfd_scan_vma (caddress, NULL, 16);
syminfo.symbols = bfdSymbols;
/* Iterate through sections of the given bfd image */
bfd_map_over_sections (bfdImage, BFDmanager_findAddressInSection, &syminfo);
/* Found the symbol ? If so, copy the data */
if (syminfo.found)
{
char *demangled = NULL;
*file = (char*) syminfo.filename;
*line = syminfo.line;
#if defined(HAVE_BFD_DEMANGLE)
if (syminfo.function)
demangled = bfd_demangle (bfdImage, syminfo.function, 0);
if (demangled)
*function = demangled;
else
*function = (char*) syminfo.function;
#else
*function = (char*) syminfo.function;
#endif
}
}
return syminfo.found;
}
static void wpa_trace_bfd_addr(void *pc)
{
bfd *abfd = cached_abfd;
struct bfd_data data;
const char *name;
char *aname = NULL;
const char *filename;
if (abfd == NULL)
return;
data.pc = (bfd_vma) pc;
data.found = FALSE;
bfd_map_over_sections(abfd, find_addr_sect, &data);
if (!data.found)
return;
do {
if (data.function)
aname = bfd_demangle(abfd, data.function,
DMGL_ANSI | DMGL_PARAMS);
name = aname ? aname : data.function;
filename = data.filename;
if (filename) {
char *end = os_strrchr(filename, '/');
int i = 0;
while (*filename && *filename == prg_fname[i] &&
filename <= end) {
filename++;
i++;
}
}
wpa_printf(MSG_INFO, " %s() %s:%u",
name, filename, data.line);
free(aname);
data.found = bfd_find_inliner_info(abfd, &data.filename,
&data.function, &data.line);
} while (data.found);
}
void
vfinfo (FILE *fp, const char *fmt, va_list ap, bfd_boolean is_warning)
{
bfd_boolean fatal = FALSE;
const char *scan;
int arg_type;
unsigned int arg_count = 0;
unsigned int arg_no;
union vfinfo_args
{
int i;
long l;
void *p;
bfd_vma v;
struct {
bfd *abfd;
asection *sec;
bfd_vma off;
} reladdr;
enum
{
Bad,
Int,
Long,
Ptr,
Vma,
RelAddr
} type;
} args[9];
for (arg_no = 0; arg_no < sizeof (args) / sizeof (args[0]); arg_no++)
args[arg_no].type = Bad;
arg_count = 0;
scan = fmt;
while (*scan != '\0')
{
while (*scan != '%' && *scan != '\0')
scan++;
if (*scan == '%')
{
scan++;
arg_no = arg_count;
if (*scan != '0' && ISDIGIT (*scan) && scan[1] == '$')
{
arg_no = *scan - '1';
scan += 2;
}
arg_type = Bad;
switch (*scan++)
{
case '\0':
--scan;
break;
case 'V':
case 'v':
case 'W':
arg_type = Vma;
break;
case 's':
arg_type = Ptr;
break;
case 'p':
if (*scan == 'A' || *scan == 'B' || *scan == 'I'
|| *scan == 'R' || *scan == 'S' || *scan == 'T')
scan++;
arg_type = Ptr;
break;
case 'C':
case 'D':
case 'G':
case 'H':
arg_type = RelAddr;
break;
case 'd':
case 'u':
arg_type = Int;
break;
case 'l':
if (*scan == 'd' || *scan == 'u')
{
++scan;
arg_type = Long;
}
break;
default:
break;
}
if (arg_type != Bad)
{
if (arg_no >= sizeof (args) / sizeof (args[0]))
abort ();
args[arg_no].type = arg_type;
++arg_count;
}
}
}
for (arg_no = 0; arg_no < arg_count; arg_no++)
{
switch (args[arg_no].type)
{
case Int:
args[arg_no].i = va_arg (ap, int);
break;
case Long:
args[arg_no].l = va_arg (ap, long);
break;
case Ptr:
args[arg_no].p = va_arg (ap, void *);
break;
case Vma:
args[arg_no].v = va_arg (ap, bfd_vma);
break;
case RelAddr:
args[arg_no].reladdr.abfd = va_arg (ap, bfd *);
args[arg_no].reladdr.sec = va_arg (ap, asection *);
args[arg_no].reladdr.off = va_arg (ap, bfd_vma);
break;
default:
abort ();
}
}
arg_count = 0;
while (*fmt != '\0')
{
const char *str = fmt;
while (*fmt != '%' && *fmt != '\0')
fmt++;
if (fmt != str)
if (fwrite (str, 1, fmt - str, fp))
{
/* Ignore. */
}
if (*fmt == '%')
{
fmt++;
arg_no = arg_count;
if (*fmt != '0' && ISDIGIT (*fmt) && fmt[1] == '$')
{
arg_no = *fmt - '1';
fmt += 2;
}
switch (*fmt++)
{
case '\0':
--fmt;
/* Fall through. */
case '%':
/* literal % */
putc ('%', fp);
break;
case 'X':
/* no object output, fail return */
config.make_executable = FALSE;
break;
case 'V':
/* hex bfd_vma */
{
bfd_vma value = args[arg_no].v;
++arg_count;
fprintf_vma (fp, value);
}
break;
case 'v':
/* hex bfd_vma, no leading zeros */
{
char buf[100];
char *p = buf;
bfd_vma value = args[arg_no].v;
++arg_count;
sprintf_vma (p, value);
while (*p == '0')
p++;
if (!*p)
p--;
fputs (p, fp);
}
break;
case 'W':
/* hex bfd_vma with 0x with no leading zeroes taking up
8 spaces. */
{
char buf[100];
bfd_vma value;
char *p;
int len;
value = args[arg_no].v;
++arg_count;
sprintf_vma (buf, value);
for (p = buf; *p == '0'; ++p)
;
if (*p == '\0')
--p;
len = strlen (p);
while (len < 8)
{
putc (' ', fp);
++len;
}
fprintf (fp, "0x%s", p);
}
break;
case 'F':
/* Error is fatal. */
fatal = TRUE;
break;
case 'P':
/* Print program name. */
fprintf (fp, "%s", program_name);
break;
case 'E':
/* current bfd error or errno */
fprintf (fp, "%s", bfd_errmsg (bfd_get_error ()));
break;
case 'C':
case 'D':
case 'G':
case 'H':
/* Clever filename:linenumber with function name if possible.
The arguments are a BFD, a section, and an offset. */
{
static bfd *last_bfd;
static char *last_file;
static char *last_function;
bfd *abfd;
asection *section;
bfd_vma offset;
asymbol **asymbols = NULL;
const char *filename;
const char *functionname;
unsigned int linenumber;
bfd_boolean discard_last;
bfd_boolean done;
abfd = args[arg_no].reladdr.abfd;
section = args[arg_no].reladdr.sec;
offset = args[arg_no].reladdr.off;
++arg_count;
if (abfd != NULL)
{
if (!bfd_generic_link_read_symbols (abfd))
einfo (_("%F%P: %pB: could not read symbols: %E\n"), abfd);
asymbols = bfd_get_outsymbols (abfd);
}
/* The GNU Coding Standard requires that error messages
be of the form:
source-file-name:lineno: message
We do not always have a line number available so if
we cannot find them we print out the section name and
offset instead. */
discard_last = TRUE;
if (abfd != NULL
&& bfd_find_nearest_line (abfd, section, asymbols, offset,
&filename, &functionname,
&linenumber))
{
if (functionname != NULL
&& (fmt[-1] == 'C' || fmt[-1] == 'H'))
{
/* Detect the case where we are printing out a
message for the same function as the last
call to vinfo ("%C"). In this situation do
not print out the ABFD filename or the
function name again. Note - we do still
print out the source filename, as this will
allow programs that parse the linker's output
(eg emacs) to correctly locate multiple
errors in the same source file. */
if (last_bfd == NULL
|| last_function == NULL
|| last_bfd != abfd
|| (last_file == NULL) != (filename == NULL)
|| (filename != NULL
&& filename_cmp (last_file, filename) != 0)
|| strcmp (last_function, functionname) != 0)
{
lfinfo (fp, _("%pB: in function `%pT':\n"),
abfd, functionname);
last_bfd = abfd;
if (last_file != NULL)
free (last_file);
last_file = NULL;
if (filename)
last_file = xstrdup (filename);
if (last_function != NULL)
free (last_function);
last_function = xstrdup (functionname);
}
discard_last = FALSE;
}
else
lfinfo (fp, "%pB:", abfd);
if (filename != NULL)
fprintf (fp, "%s:", filename);
done = fmt[-1] != 'H';
if (functionname != NULL && fmt[-1] == 'G')
lfinfo (fp, "%pT", functionname);
else if (filename != NULL && linenumber != 0)
fprintf (fp, "%u%s", linenumber, done ? "" : ":");
else
done = FALSE;
}
else
{
lfinfo (fp, "%pB:", abfd);
done = FALSE;
}
if (!done)
lfinfo (fp, "(%pA+0x%v)", section, offset);
if (discard_last)
{
last_bfd = NULL;
if (last_file != NULL)
{
free (last_file);
last_file = NULL;
}
if (last_function != NULL)
{
free (last_function);
last_function = NULL;
}
}
}
break;
case 'p':
if (*fmt == 'A')
{
/* section name from a section */
asection *sec;
bfd *abfd;
const char *group = NULL;
struct coff_comdat_info *ci;
fmt++;
sec = (asection *) args[arg_no].p;
++arg_count;
abfd = sec->owner;
fprintf (fp, "%s", sec->name);
if (abfd != NULL
&& bfd_get_flavour (abfd) == bfd_target_elf_flavour
&& elf_next_in_group (sec) != NULL
&& (sec->flags & SEC_GROUP) == 0)
group = elf_group_name (sec);
else if (abfd != NULL
&& bfd_get_flavour (abfd) == bfd_target_coff_flavour
&& (ci = bfd_coff_get_comdat_section (sec->owner,
sec)) != NULL)
group = ci->name;
if (group != NULL)
fprintf (fp, "[%s]", group);
}
else if (*fmt == 'B')
{
/* filename from a bfd */
bfd *abfd = (bfd *) args[arg_no].p;
fmt++;
++arg_count;
if (abfd == NULL)
fprintf (fp, "%s generated", program_name);
else if (abfd->my_archive != NULL
&& !bfd_is_thin_archive (abfd->my_archive))
fprintf (fp, "%s(%s)", abfd->my_archive->filename,
abfd->filename);
else
fprintf (fp, "%s", abfd->filename);
}
else if (*fmt == 'I')
{
/* filename from a lang_input_statement_type */
lang_input_statement_type *i;
fmt++;
i = (lang_input_statement_type *) args[arg_no].p;
++arg_count;
if (i->the_bfd != NULL
&& i->the_bfd->my_archive != NULL
&& !bfd_is_thin_archive (i->the_bfd->my_archive))
fprintf (fp, "(%s)%s", i->the_bfd->my_archive->filename,
i->local_sym_name);
else
fprintf (fp, "%s", i->filename);
}
else if (*fmt == 'R')
{
/* Print all that's interesting about a relent. */
arelent *relent = (arelent *) args[arg_no].p;
fmt++;
++arg_count;
lfinfo (fp, "%s+0x%v (type %s)",
(*(relent->sym_ptr_ptr))->name,
relent->addend,
relent->howto->name);
}
else if (*fmt == 'S')
{
/* Print script file and linenumber. */
etree_type node;
etree_type *tp = (etree_type *) args[arg_no].p;
fmt++;
++arg_count;
if (tp == NULL)
{
tp = &node;
tp->type.filename = ldlex_filename ();
tp->type.lineno = lineno;
}
if (tp->type.filename != NULL)
fprintf (fp, "%s:%u", tp->type.filename, tp->type.lineno);
}
else if (*fmt == 'T')
{
/* Symbol name. */
const char *name = (const char *) args[arg_no].p;
fmt++;
++arg_count;
if (name == NULL || *name == 0)
{
fprintf (fp, _("no symbol"));
break;
}
else if (demangling)
{
char *demangled;
demangled = bfd_demangle (link_info.output_bfd, name,
DMGL_ANSI | DMGL_PARAMS);
if (demangled != NULL)
{
fprintf (fp, "%s", demangled);
free (demangled);
break;
}
}
fprintf (fp, "%s", name);
}
else
{
/* native (host) void* pointer, like printf */
fprintf (fp, "%p", args[arg_no].p);
++arg_count;
}
break;
case 's':
/* arbitrary string, like printf */
fprintf (fp, "%s", (char *) args[arg_no].p);
++arg_count;
break;
case 'd':
/* integer, like printf */
fprintf (fp, "%d", args[arg_no].i);
++arg_count;
break;
case 'u':
/* unsigned integer, like printf */
fprintf (fp, "%u", args[arg_no].i);
++arg_count;
break;
case 'l':
if (*fmt == 'd')
{
fprintf (fp, "%ld", args[arg_no].l);
++arg_count;
++fmt;
break;
}
else if (*fmt == 'u')
{
fprintf (fp, "%lu", args[arg_no].l);
++arg_count;
++fmt;
break;
}
/* Fallthru */
default:
fprintf (fp, "%%%c", fmt[-1]);
break;
}
}
}
if (is_warning && config.fatal_warnings)
config.make_executable = FALSE;
if (fatal)
xexit (1);
}
char* getDemangledNameRaw(bfd* abfd, const char* name)
{
char* result = bfd_demangle(abfd, name, DMGL_PARAMS | DMGL_ANSI | DMGL_RET_POSTFIX);
return result ? result : strdup(name);
}
int BinaryFile::InitRelsym(relsym_dict &rels)
{
ELFManager elf;
//open
elf.elf_open(_abfd->filename);
//rel symbol
int rel_count;
long relsym_needed = elf.elf_get_relsym_upper_bound (&rel_count);
if (relsym_needed <= 0) {
fprintf(stderr, "elf_get_relsym_upper_bound: SHT_REL\n");
return -1;
}
erelsym **rel_table = (erelsym **) malloc (relsym_needed);
if (rel_table == NULL) {
perror("malloc");
return -1;
}
long number_of_relsym = elf.elf_canonicalize_relsym (rel_table, rel_count);
if (number_of_relsym < 0) {
fprintf(stderr, "elf_canonicalize_symtab");
return -1;
}
//获取符号表所需大小
long dynsym_needed = elf.elf_get_section_upper_bound (SHT_DYNSYM);
if (dynsym_needed <= 0) {
fprintf(stderr, "elf_get_section_upper_bound: SHT_DYNSYM\n");
return -1;
}
esymbol **symbol_table = NULL;
symbol_table = (esymbol **) malloc (dynsym_needed);
if (symbol_table == NULL) {
perror("malloc");
return -1;
}
long number_of_symbols = elf.elf_canonicalize_symbol (symbol_table, SHT_DYNSYM);
if (number_of_symbols < 0) {
fprintf(stderr, "elf_canonicalize_symtab");
return -1;
}
//do something
/*
for(long i=0; i<number_of_symbols; i++)
{
char *name = symbol_table[i]->name;
//bfd_vma value = symbol_table[i]->value;
if (symbol_table[i]->type != type) {
continue;
}
printf("[idx:%ld] name:%s\n", i, name);
}
*/
for(long i=0; i<number_of_relsym; i++)
{
if(rel_table[i]->type != R_X86_64_JUMP_SLOT) {
continue;
}
char *name = symbol_table[rel_table[i]->symid]->name;
#ifdef HAVE_BFD_DEMANGLE
char *demangle_name = bfd_demangle(NULL, name, DMGL_PARAMS | DMGL_ANSI);
if (demangle_name != NULL) {
name = demangle_name;
}
#else
//demangle
int status;
char *demangle_name = abi::__cxa_demangle(name, NULL, NULL, &status);
if (status == 0) {
name = demangle_name;
}
#endif
rels[name].realname = symbol_table[rel_table[i]->symid]->name;
rels[name].pgot = (void *)rel_table[i]->offset;
//printf("[idx:%ld] name:%s, pgot:0x%lx, addr:0x%lx\n",
// i, name, rels[name].pgot, rels[name].realname.c_str());
if (demangle_name != NULL) {
free(demangle_name);
}
}
//free
if (rel_table) {
free(rel_table);
}
if (symbol_table) {
free(symbol_table);
}
elf.elf_close();
return 0;
}
int BinaryFile::InitSymbols(symbol_dict &symbols, int sym_flag)
{
ELFManager elf;
//open
elf.elf_open(_abfd->filename);
//获取符号表所需大小
long storage_needed = elf.elf_get_symtab_upper_bound ();
if (storage_needed < 0) {
fprintf(stderr, "elf_get_symtab_upper_bound\n");
return -1;
}
if (storage_needed == 0) {
fprintf(stderr, "storage_needed is 0\n");
return -1;
}
esymbol **symbol_table = NULL;
symbol_table = (esymbol **) malloc (storage_needed);
if (symbol_table == NULL) {
perror("malloc");
return -1;
}
long number_of_symbols = elf.elf_canonicalize_symtab (symbol_table);
if (number_of_symbols < 0) {
fprintf(stderr, "elf_canonicalize_symtab");
return -1;
}
int type = 0;
if (sym_flag & SYM_FUNC) {
type = STT_FUNC;
}
for(long i=0; i<number_of_symbols; i++)
{
char *name = symbol_table[i]->name;
bfd_vma value = symbol_table[i]->value;
if (symbol_table[i]->type != type
|| value == 0
//|| symbol_table[i]->size < minsize //小于跳转指令长度则忽略
|| symbol_table[i]->shndx == 0) {
continue;
}
#ifdef HAVE_BFD_DEMANGLE
char *demangle_name = bfd_demangle(NULL, name, DMGL_PARAMS | DMGL_ANSI);
if (demangle_name != NULL) {
name = demangle_name;
}
#else
//FIXME: 规避libstd++低版本demangle("FT_SUPERDOC_cmp")出core的bug
if(strcmp(name, "FT_SUPERDOC_cmp") == 0) {
symbols[name].addr = (void *)value;
symbols[name].size = symbol_table[i]->size;
continue;
}
//demangle
int status;
char *demangle_name = abi::__cxa_demangle(name, NULL, NULL, &status);
if (status == 0) {
name = demangle_name;
}
#endif
symbols[name].addr = (void *)value;
symbols[name].size = symbol_table[i]->size;
if (demangle_name != NULL) {
free(demangle_name);
}
}
//free
if (symbol_table) {
free(symbol_table);
}
elf.elf_close();
return 0;
}
