mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 16:45:25 +07:00
494e31e2a2
Out of symbol_type__is_a(type, MAP__FUNCTION), which is the only variant used so far, useful in a kallsyms library and one more step in ditching the MAP__FUNCTION/VARIABLE split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-faonqs76n5808z9mq77edr94@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
77 lines
1.3 KiB
C
77 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <ctype.h>
|
|
#include "symbol/kallsyms.h"
|
|
#include <stdio.h>
|
|
#include <stdlib.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';
|
|
}
|
|
|
|
int kallsyms__parse(const char *filename, void *arg,
|
|
int (*process_symbol)(void *arg, const char *name,
|
|
char type, u64 start))
|
|
{
|
|
char *line = NULL;
|
|
size_t n;
|
|
int err = -1;
|
|
FILE *file = fopen(filename, "r");
|
|
|
|
if (file == NULL)
|
|
goto out_failure;
|
|
|
|
err = 0;
|
|
|
|
while (!feof(file)) {
|
|
u64 start;
|
|
int line_len, len;
|
|
char symbol_type;
|
|
char *symbol_name;
|
|
|
|
line_len = getline(&line, &n, file);
|
|
if (line_len < 0 || !line)
|
|
break;
|
|
|
|
line[--line_len] = '\0'; /* \n */
|
|
|
|
len = hex2u64(line, &start);
|
|
|
|
/* Skip the line if we failed to parse the address. */
|
|
if (!len)
|
|
continue;
|
|
|
|
len++;
|
|
if (len + 2 >= line_len)
|
|
continue;
|
|
|
|
symbol_type = line[len];
|
|
len += 2;
|
|
symbol_name = line + len;
|
|
len = line_len - len;
|
|
|
|
if (len >= KSYM_NAME_LEN) {
|
|
err = -1;
|
|
break;
|
|
}
|
|
|
|
err = process_symbol(arg, symbol_name, symbol_type, start);
|
|
if (err)
|
|
break;
|
|
}
|
|
|
|
free(line);
|
|
fclose(file);
|
|
return err;
|
|
|
|
out_failure:
|
|
return -1;
|
|
}
|