/*
* Read in symbol table
*/
static void
getsymtab(FILE *nfile, const char *filename)
{
register long i;
int askfor;
struct nlist nbuf;
/* pass1 - count symbols */
fseek(nfile, (long)N_SYMOFF(xbuf), 0);
nname = 0;
for (i = xbuf.a_syms; i > 0; i -= sizeof(struct nlist)) {
fread(&nbuf, sizeof(nbuf), 1, nfile);
if ( ! funcsymbol( &nbuf ) ) {
continue;
}
nname++;
}
if (nname == 0)
errx( 1 , "%s: no symbols" , filename );
askfor = nname + 1;
nl = (nltype *) calloc( askfor , sizeof(nltype) );
if (nl == 0)
errx( 1 , "no room for %d bytes of symbol table" ,
askfor * sizeof(nltype) );
/* pass2 - read symbols */
fseek(nfile, (long)N_SYMOFF(xbuf), 0);
npe = nl;
nname = 0;
for (i = xbuf.a_syms; i > 0; i -= sizeof(struct nlist)) {
fread(&nbuf, sizeof(nbuf), 1, nfile);
if ( ! funcsymbol( &nbuf ) ) {
# ifdef DEBUG
if ( debug & AOUTDEBUG ) {
printf( "[getsymtab] rejecting: 0x%x %s\n" ,
nbuf.n_type , strtab + nbuf.n_un.n_strx );
}
# endif /* DEBUG */
continue;
}
npe->value = nbuf.n_value;
npe->name = strtab+nbuf.n_un.n_strx;
# ifdef DEBUG
if ( debug & AOUTDEBUG ) {
printf( "[getsymtab] %d %s 0x%08lx\n" ,
nname , npe -> name , npe -> value );
}
# endif /* DEBUG */
npe++;
nname++;
}
npe->value = -1;
}
static
void
count_func_symbols(
struct nlist *symbols,
struct nlist_64 *symbols64,
unsigned long nsymbols,
char *strings,
unsigned long strsize)
{
unsigned long i;
uint32_t n_strx;
uint8_t n_type;
uint8_t n_sect;
for(i = 0; i < nsymbols; i++){
if(symbols != NULL){
n_strx = symbols[i].n_un.n_strx;
n_type = symbols[i].n_type;
n_sect = symbols[i].n_sect;
}
else{
n_strx = symbols64[i].n_un.n_strx;
n_type = symbols64[i].n_type;
n_sect = symbols64[i].n_sect;
}
if(n_strx != 0 && n_strx < strsize){
if(funcsymbol(n_type, n_sect, strings + n_strx))
nname++;
}
}
}
static
void
load_func_symbols(
struct nlist *symbols,
struct nlist_64 *symbols64,
unsigned long nsymbols,
char *strings,
unsigned long strsize,
unsigned long vmaddr_slide)
{
unsigned long i;
uint32_t n_strx;
uint8_t n_type;
uint8_t n_sect;
uint64_t n_value;
for(i = 0; i < nsymbols; i++){
if(symbols != NULL){
n_strx = symbols[i].n_un.n_strx;
n_type = symbols[i].n_type;
n_sect = symbols[i].n_sect;
n_value = symbols[i].n_value;
}
else{
n_strx = symbols64[i].n_un.n_strx;
n_type = symbols64[i].n_type;
n_sect = symbols64[i].n_sect;
n_value = symbols64[i].n_value;
}
if(n_strx != 0 && n_strx < strsize){
if(funcsymbol(n_type, n_sect, strings + n_strx)){
npe->value = n_value + vmaddr_slide;
npe->name = strings + n_strx;
npe++;
}
}
}
}
