/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdlib.h>
#include <fcntl.h>
#include <strings.h>
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/inttypes.h>
#include <sys/elf.h>
#include <sys/elf_notes.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
static char *pname;
static char *fname;
static char *image; /* pointer to the ELF file in memory */
#define ELFSEEK(offset) ((void *)(image + offset))
/*
* Extract the PT_LOAD bits and format them into a .s
*/
static void
extract32(Elf32_Ehdr *eh)
{
Elf32_Phdr *phdr;
caddr_t allphdrs;
int i;
int c;
unsigned char *bytes;
uint_t cnt = 10;
allphdrs = NULL;
if (eh->e_type != ET_EXEC) {
(void) fprintf(stderr, "%s: not ET_EXEC, e_type = 0x%x\n",
pname, eh->e_type);
exit(1);
}
if (eh->e_phnum == 0 || eh->e_phoff == 0) {
(void) fprintf(stderr, "%s: no program headers\n", pname);
exit(1);
}
/*
* Get the program headers.
*/
allphdrs = ELFSEEK(eh->e_phoff);
if (allphdrs == NULL) {
(void) fprintf(stderr, "%s: Failed to get %d program hdrs\n",
pname, eh->e_phnum);
exit(1);
}
/*
* Find the PT_LOAD section
*/
for (i = 0; i < eh->e_phnum; i++) {
/*LINTED [ELF program header alignment]*/
phdr = (Elf32_Phdr *)(allphdrs + eh->e_phentsize * i);
if (phdr->p_type != PT_LOAD)
continue;
if (phdr->p_memsz == 0)
continue;
bytes = ELFSEEK(phdr->p_offset);
for (c = 0; c < phdr->p_filesz; ++c) {
if (c % cnt == 0)
(void) printf("\n .byte ");
else
(void) printf(",");
(void) printf("0x%x", bytes[c]);
}
for (; c < phdr->p_memsz; ++c) {
if (c % cnt == 0) {
(void) printf("\n .byte ");
cnt = 20;
} else {
(void) printf(", ");
}
(void) printf("0");
}
(void) printf("\n");
return;
}
(void) fprintf(stderr, "%s: Failed finding PT_LOAD section\n", pname);
exit(1);
}
static void
extract64(Elf64_Ehdr *eh)
{
Elf64_Phdr *phdr;
caddr_t allphdrs;
int i;
int c;
unsigned char *bytes;
uint_t cnt = 10;
allphdrs = NULL;
if (eh->e_type != ET_EXEC) {
(void) fprintf(stderr, "%s: not ET_EXEC, e_type = 0x%x\n",
pname, eh->e_type);
exit(1);
}
if (eh->e_phnum == 0 || eh->e_phoff == 0) {
(void) fprintf(stderr, "%s: no program headers\n", pname);
exit(1);
}
/*
* Get the program headers.
*/
allphdrs = ELFSEEK(eh->e_phoff);
if (allphdrs == NULL) {
(void) fprintf(stderr, "%s: Failed to get %d program hdrs\n",
pname, eh->e_phnum);
exit(1);
}
/*
* Find the PT_LOAD section
*/
for (i = 0; i < eh->e_phnum; i++) {
/*LINTED [ELF program header alignment]*/
phdr = (Elf64_Phdr *)(allphdrs + eh->e_phentsize * i);
if (phdr->p_type != PT_LOAD)
continue;
if (phdr->p_memsz == 0)
continue;
bytes = ELFSEEK(phdr->p_offset);
for (c = 0; c < phdr->p_filesz; ++c) {
if (c % cnt == 0)
(void) printf("\n .byte ");
else
(void) printf(",");
(void) printf("0x%x", bytes[c]);
}
for (; c < phdr->p_memsz; ++c) {
if (c % cnt == 0) {
(void) printf("\n .byte ");
cnt = 20;
} else {
(void) printf(", ");
}
(void) printf("0");
}
(void) printf("\n");
return;
}
(void) fprintf(stderr, "%s: Failed finding PT_LOAD section\n", pname);
exit(1);
}
int
main(int argc, char **argv)
{
int fd;
uchar_t *ident;
void *hdr = NULL;
struct stat stats;
ssize_t r;
size_t pgsz;
uint_t len;
/*
* we expect one argument -- the elf file
*/
if (argc != 2) {
(void) fprintf(stderr, "usage: %s <unix-elf-file>\n", argv[0]);
exit(1);
}
pname = strrchr(argv[0], '/');
if (pname == NULL)
pname = argv[0];
else
++pname;
fname = argv[1];
fd = open(fname, O_RDONLY);
if (fd < 0) {
(void) fprintf(stderr, "%s: open(%s, O_RDONLY) failed, %s\n",
pname, fname, strerror(errno));
exit(1);
}
if (stat(fname, &stats) < 0) {
(void) fprintf(stderr, "%s: stat(%s, ...) failed, %s\n",
pname, fname, strerror(errno));
exit(1);
}
pgsz = getpagesize();
len = (stats.st_size + (pgsz - 1)) & (~(pgsz - 1));
/*
* mmap the file
*/
image = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, 0);
if (image == MAP_FAILED) {
(void) fprintf(stderr, "%s: mmap() of %s failed, %s\n",
pname, fname, strerror(errno));
exit(1);
}
ident = ELFSEEK(0);
if (ident[EI_MAG0] != ELFMAG0 || ident[EI_MAG1] != ELFMAG1 ||
ident[EI_MAG2] != ELFMAG2 || ident[EI_MAG3] != ELFMAG3) {
(void) fprintf(stderr, "%s: not an ELF file!\n", pname);
exit(1);
}
if (ident[EI_CLASS] == ELFCLASS32) {
hdr = ELFSEEK(0);
extract32(hdr);
} else if (ident[EI_CLASS] == ELFCLASS64) {
hdr = ELFSEEK(0);
extract64(hdr);
} else {
(void) fprintf(stderr, "%s: Wrong ELF class 0x%x\n", pname,
ident[EI_CLASS]);
exit(1);
}
return (0);
}