mbh_patch.c revision ae115bc77f6fcde83175c75b4206dc2e50747966
/*
* 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
* 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 <sys/inttypes.h>
#include <sys/elf_notes.h>
#include "sys/multiboot.h"
static char *pname;
static char *fname;
static char *image; /* pointer to the ELF file in memory */
/*
* patch the load address / entry address
* Find the physical load address of the 1st PT_LOAD segment.
* Find the amount that e_entry exceeds that amount.
* Now go back and subtract the excess from the p_paddr of the LOAD segment.
*/
static void
{
int i;
int m;
int extra;
exit(1);
}
exit(1);
}
/*
* Get the program headers.
*/
exit(1);
}
/*
* Look for multiboot header. It must be 32-bit aligned and
* completely contained in the 1st 8K of the file.
*/
break;
}
if (m >= 8192 - sizeof (multiboot_header_t)) {
pname);
exit(1);
}
/*
* Find the 1:1 mapped PT_LOAD section
*/
/*LINTED [ELF program header alignment]*/
/*
* Find the low memory 1:1 PT_LOAD section!
*/
continue;
continue;
continue;
if (i != 0) {
" wasn't 1st\n", pname);
exit(1);
}
/*
* Patch the multiboot header fields to get entire
* file loaded, with entry aligned at extra.
*/
exit(1);
}
/*
* Grub uses the MB header for 64 bit loading.
*/
#ifdef VERBOSE
(void) printf("%s ELF64 MB header patched by 0x%0x "
#endif
exit(0);
}
pname);
exit(1);
}
int
{
int fd;
uchar_t *ident;
/*
* we expect one argument -- the elf file
*/
if (argc != 2) {
exit(1);
}
else
++pname;
if (fd < 0) {
exit(1);
}
/*
* mmap just the 1st 8K -- since that's where the GRUB
* multiboot header must be located.
*/
if (image == MAP_FAILED) {
exit(1);
}
ident = ELFSEEK(0);
exit(1);
}
if (ident[EI_CLASS] == ELFCLASS64) {
} else if (ident[EI_CLASS] != ELFCLASS32) {
ident[EI_CLASS]);
exit(1);
}
return (0);
}