// SPDX-License-Identifier: GPL-2.0
|
#include "symbol/kallsyms.h"
|
#include "api/io.h"
|
#include <stdio.h>
|
#include <sys/stat.h>
|
#include <fcntl.h>
|
|
u8 kallsyms2elf_type(char type)
|
{
|
type = tolower(type);
|
return (type == 't' || type == 'w') ? STT_FUNC : STT_OBJECT;
|
}
|
|
bool kallsyms__is_function(char symbol_type)
|
{
|
symbol_type = toupper(symbol_type);
|
return symbol_type == 'T' || symbol_type == 'W';
|
}
|
|
static void read_to_eol(struct io *io)
|
{
|
int ch;
|
|
for (;;) {
|
ch = io__get_char(io);
|
if (ch < 0 || ch == '\n')
|
return;
|
}
|
}
|
|
int kallsyms__parse(const char *filename, void *arg,
|
int (*process_symbol)(void *arg, const char *name,
|
char type, u64 start))
|
{
|
struct io io;
|
char bf[BUFSIZ];
|
int err;
|
|
io.fd = open(filename, O_RDONLY, 0);
|
|
if (io.fd < 0)
|
return -1;
|
|
io__init(&io, io.fd, bf, sizeof(bf));
|
|
err = 0;
|
while (!io.eof) {
|
__u64 start;
|
int ch;
|
size_t i;
|
char symbol_type;
|
char symbol_name[KSYM_NAME_LEN + 1];
|
|
if (io__get_hex(&io, &start) != ' ') {
|
read_to_eol(&io);
|
continue;
|
}
|
symbol_type = io__get_char(&io);
|
if (io__get_char(&io) != ' ') {
|
read_to_eol(&io);
|
continue;
|
}
|
for (i = 0; i < sizeof(symbol_name); i++) {
|
ch = io__get_char(&io);
|
if (ch < 0 || ch == '\n')
|
break;
|
symbol_name[i] = ch;
|
}
|
symbol_name[i] = '\0';
|
|
err = process_symbol(arg, symbol_name, symbol_type, start);
|
if (err)
|
break;
|
}
|
|
close(io.fd);
|
return err;
|
}
|
