linux-imx

/*

 * sortextable.c: Sort the kernel's exception table

 *

 * Copyright 2011 - 2012 Cavium, Inc.

 *

 * Based on code taken from recortmcount.c which is:

 *

 * Copyright 2009 John F. Reiser <jreiser@BitWagon.com>.  All rights reserved.

 * Licensed under the GNU General Public License, version 2 (GPLv2).

 *

 * Restructured to fit Linux format, as well as other updates:

 *  Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.

 */

​

/*

 * Strategy: alter the vmlinux file in-place.

 */

​

#include <sys/types.h>

#include <sys/mman.h>

#include <sys/stat.h>

#include <getopt.h>

#include <elf.h>

#include <fcntl.h>

#include <setjmp.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

​

#include <tools/be_byteshift.h>

#include <tools/le_byteshift.h>

​

#ifndef EM_ARCOMPACT

#define EM_ARCOMPACT    93

#endif

​

#ifndef EM_XTENSA

#define EM_XTENSA   94

#endif

​

#ifndef EM_AARCH64

#define EM_AARCH64  183

#endif

​

#ifndef EM_MICROBLAZE

#define EM_MICROBLAZE   189

#endif

​

#ifndef EM_ARCV2

#define EM_ARCV2    195

#endif

​

static int fd_map;  /* File descriptor for file being modified. */

static int mmap_failed; /* Boolean flag. */

static void *ehdr_curr; /* current ElfXX_Ehdr *  for resource cleanup */

static struct stat sb;  /* Remember .st_size, etc. */

static jmp_buf jmpenv;  /* setjmp/longjmp per-file error escape */

​

/* setjmp() return values */

enum {

    SJ_SETJMP = 0,  /* hardwired first return */

    SJ_FAIL,