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Convert kgzip(8) to be an i386 cross-tool. This is needed for

Browse Source 
cross-releasing i386 on different architectures.  This version
provides an i386 version of <a.out.h>, and handles endianness.

Tested on:	alpha, sparc64
This commit is contained in:
Ruslan Ermilov 2003-03-11 11:45:43 +00:00
parent 59aca3e42a
commit 8eb1c4caf9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=112089
5 changed files with 265 additions and 63 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
Makefile.inc1
View File

@ -661,8 +661,9 @@ build-tools:
_elf2exe= usr.sbin/elf2exe
.endif
.if ${TARGET_ARCH} == "i386" && ${MACHINE_ARCH} != "i386"
.if ${TARGET_ARCH} == "i386"
_btxld= usr.sbin/btxld
_kgzip= usr.sbin/kgzip
.endif
.if ${TARGET_ARCH} == "sparc64"
@ -674,7 +675,7 @@ _xlint= usr.bin/xlint/lint1 usr.bin/xlint/lint2 usr.bin/xlint/xlint
cross-tools:
.for _tool in ${_btxld} ${_elf2aout} ${_elf2exe} \
gnu/usr.bin/binutils usr.sbin/crunch/crunchide \
gnu/usr.bin/cc ${_xlint}
gnu/usr.bin/cc ${_xlint} ${_kgzip}
${ECHODIR} "===> ${_tool}"; \
cd ${.CURDIR}/${_tool}; \
${MAKE} DIRPRFX=${_tool}/ obj; \

91
usr.sbin/kgzip/elfhdr.c
View File

@ -28,6 +28,7 @@
#include <stddef.h>
#include "elfhdr.h"
#include "endian.h"
#define KGZ_FIX_NSIZE 0 /* Run-time fixup */
@ -42,80 +43,80 @@ const struct kgz_elfhdr elfhdr = {
ELFCLASS32, ELFDATA2LSB, EV_CURRENT, 0,
'F', 'r', 'e', 'e', 'B', 'S', 'D', 0
},
ET_EXEC, /* e_type */
EM_386, /* e_machine */
EV_CURRENT, /* e_version */
HTOLE16(ET_EXEC), /* e_type */
HTOLE16(EM_386), /* e_machine */
HTOLE32(EV_CURRENT), /* e_version */
0, /* e_entry */
0, /* e_phoff */
offsetof(struct kgz_elfhdr, sh), /* e_shoff */
HTOLE32(offsetof(struct kgz_elfhdr, sh)), /* e_shoff */
0, /* e_flags */
sizeof(Elf32_Ehdr), /* e_ehsize */
HTOLE16(sizeof(Elf32_Ehdr)), /* e_ehsize */
0, /* e_phentsize */
0, /* e_phnum */
sizeof(Elf32_Shdr), /* e_shentsize */
KGZ_SHNUM, /* e_shnum */
KGZ_SH_SHSTRTAB /* e_shstrndx */
HTOLE16(sizeof(Elf32_Shdr)), /* e_shentsize */
HTOLE16(KGZ_SHNUM), /* e_shnum */
HTOLE16(KGZ_SH_SHSTRTAB) /* e_shstrndx */
},
/* Section header */
{
{
0, /* sh_name */
SHT_NULL, /* sh_type */
HTOLE32(SHT_NULL), /* sh_type */
0, /* sh_flags */
0, /* sh_addr */
0, /* sh_offset */
0, /* sh_size */
SHN_UNDEF, /* sh_link */
HTOLE32(SHN_UNDEF), /* sh_link */
0, /* sh_info */
0, /* sh_addralign */
0 /* sh_entsize */
},
{
offsetof(struct kgz_shstrtab, symtab), /* sh_name */
SHT_SYMTAB, /* sh_type */
HTOLE32(offsetof(struct kgz_shstrtab, symtab)), /* sh_name */
HTOLE32(SHT_SYMTAB), /* sh_type */
0, /* sh_flags */
0, /* sh_addr */
offsetof(struct kgz_elfhdr, st), /* sh_offset */
sizeof(Elf32_Sym) * KGZ_STNUM, /* sh_size */
KGZ_SH_STRTAB, /* sh_link */
1, /* sh_info */
4, /* sh_addralign */
sizeof(Elf32_Sym) /* sh_entsize */
HTOLE32(offsetof(struct kgz_elfhdr, st)), /* sh_offset */
HTOLE32(sizeof(Elf32_Sym) * KGZ_STNUM), /* sh_size */
HTOLE32(KGZ_SH_STRTAB), /* sh_link */
HTOLE32(1), /* sh_info */
HTOLE32(4), /* sh_addralign */
HTOLE32(sizeof(Elf32_Sym)) /* sh_entsize */
},
{
offsetof(struct kgz_shstrtab, shstrtab), /* sh_name */
SHT_STRTAB, /* sh_type */
HTOLE32(offsetof(struct kgz_shstrtab, shstrtab)), /* sh_name */
HTOLE32(SHT_STRTAB), /* sh_type */
0, /* sh_flags */
0, /* sh_addr */
offsetof(struct kgz_elfhdr, shstrtab), /* sh_offset */
sizeof(struct kgz_shstrtab), /* sh_size */
SHN_UNDEF, /* sh_link */
HTOLE32(offsetof(struct kgz_elfhdr, shstrtab)), /* sh_offset */
HTOLE32(sizeof(struct kgz_shstrtab)), /* sh_size */
HTOLE32(SHN_UNDEF), /* sh_link */
0, /* sh_info */
1, /* sh_addralign */
HTOLE32(1), /* sh_addralign */
0 /* sh_entsize */
},
{
offsetof(struct kgz_shstrtab, strtab), /* sh_name */
SHT_STRTAB, /* sh_type */
HTOLE32(offsetof(struct kgz_shstrtab, strtab)), /* sh_name */
HTOLE32(SHT_STRTAB), /* sh_type */
0, /* sh_flags */
0, /* sh_addr */
offsetof(struct kgz_elfhdr, strtab), /* sh_offset */
sizeof(struct kgz_strtab), /* sh_size */
SHN_UNDEF, /* sh_link */
HTOLE32(offsetof(struct kgz_elfhdr, strtab)), /* sh_offset */
HTOLE32(sizeof(struct kgz_strtab)), /* sh_size */
HTOLE32(SHN_UNDEF), /* sh_link */
0, /* sh_info */
1, /* sh_addralign */
HTOLE32(1), /* sh_addralign */
0 /* sh_entsize */
},
{
offsetof(struct kgz_shstrtab, data), /* sh_name */
SHT_PROGBITS, /* sh_type */
SHF_ALLOC | SHF_WRITE, /* sh_flags */
HTOLE32(offsetof(struct kgz_shstrtab, data)), /* sh_name */
HTOLE32(SHT_PROGBITS), /* sh_type */
HTOLE32(SHF_ALLOC | SHF_WRITE), /* sh_flags */
0, /* sh_addr */
sizeof(struct kgz_elfhdr), /* sh_offset */
sizeof(struct kgz_hdr) + KGZ_FIX_NSIZE, /* sh_size */
SHN_UNDEF, /* sh_link */
HTOLE32(sizeof(struct kgz_elfhdr)), /* sh_offset */
HTOLE32(sizeof(struct kgz_hdr) + KGZ_FIX_NSIZE), /* sh_size */
HTOLE32(SHN_UNDEF), /* sh_link */
0, /* sh_info */
4, /* sh_addralign */
HTOLE32(4), /* sh_addralign */
0 /* sh_entsize */
}
},
@ -127,23 +128,23 @@ const struct kgz_elfhdr elfhdr = {
0, /* st_size */
0, /* st_info */
0, /* st_other */
SHN_UNDEF /* st_shndx */
HTOLE16(SHN_UNDEF) /* st_shndx */
},
{
offsetof(struct kgz_strtab, kgz), /* st_name */
HTOLE32(offsetof(struct kgz_strtab, kgz)), /* st_name */
0, /* st_value */
sizeof(struct kgz_hdr), /* st_size */
HTOLE32(sizeof(struct kgz_hdr)), /* st_size */
ELF32_ST_INFO(STB_GLOBAL, STT_OBJECT), /* st_info */
0, /* st_other */
KGZ_SH_DATA /* st_shndx */
HTOLE16(KGZ_SH_DATA) /* st_shndx */
},
{
offsetof(struct kgz_strtab, kgz_ndata), /* st_name */
sizeof(struct kgz_hdr), /* st_value */
KGZ_FIX_NSIZE, /* st_size */
HTOLE32(offsetof(struct kgz_strtab, kgz_ndata)), /* st_name */
HTOLE32(sizeof(struct kgz_hdr)), /* st_value */
HTOLE32(KGZ_FIX_NSIZE), /* st_size */
ELF32_ST_INFO(STB_GLOBAL, STT_OBJECT), /* st_info */
0, /* st_other */
KGZ_SH_DATA /* st_shndx */
HTOLE16(KGZ_SH_DATA) /* st_shndx */
}
},
/* Section header string table */

52
usr.sbin/kgzip/endian.h Normal file
View File

@ -0,0 +1,52 @@
/*
* $FreeBSD$
*/
#include <sys/types.h>
#include <machine/endian.h>
#define bswap16(x) (uint16_t) \
((x >> 8) | (x << 8))
#define bswap32(x) (uint32_t) \
((x >> 24) | ((x >> 8) & 0xff00) | ((x << 8) & 0xff0000) | (x << 24))
#define bswap64(x) (uint64_t) \
((x >> 56) | ((x >> 40) & 0xff00) | ((x >> 24) & 0xff0000) | \
((x >> 8) & 0xff000000) | ((x << 8) & ((uint64_t)0xff << 32)) | \
((x << 24) & ((uint64_t)0xff << 40)) | \
((x << 40) & ((uint64_t)0xff << 48)) | ((x << 56)))
/*
* Host to big endian, host to little endian, big endian to host, and little
* endian to host byte order functions as detailed in byteorder(9).
*/
#if _BYTE_ORDER == _LITTLE_ENDIAN
#define HTOBE16(x) bswap16((uint16_t)(x))
#define HTOBE32(x) bswap32((uint32_t)(x))
#define HTOBE64(x) bswap64((uint64_t)(x))
#define HTOLE16(x) ((uint16_t)(x))
#define HTOLE32(x) ((uint32_t)(x))
#define HTOLE64(x) ((uint64_t)(x))
#define BE16TOH(x) bswap16((uint16_t)(x))
#define BE32TOH(x) bswap32((uint32_t)(x))
#define BE64TOH(x) bswap64((uint64_t)(x))
#define LE16TOH(x) ((uint16_t)(x))
#define LE32TOH(x) ((uint32_t)(x))
#define LE64TOH(x) ((uint64_t)(x))
#else /* _BYTE_ORDER != _LITTLE_ENDIAN */
#define HTOBE16(x) ((uint16_t)(x))
#define HTOBE32(x) ((uint32_t)(x))
#define HTOBE64(x) ((uint64_t)(x))
#define HTOLE16(x) bswap16((uint16_t)(x))
#define HTOLE32(x) bswap32((uint32_t)(x))
#define HTOLE64(x) bswap64((uint64_t)(x))
#define BE16TOH(x) ((uint16_t)(x))
#define BE32TOH(x) ((uint32_t)(x))
#define BE64TOH(x) ((uint64_t)(x))
#define LE16TOH(x) bswap16((uint16_t)(x))
#define LE32TOH(x) bswap32((uint32_t)(x))
#define LE64TOH(x) bswap64((uint64_t)(x))
#endif /* _BYTE_ORDER == _LITTLE_ENDIAN */

139
usr.sbin/kgzip/i386_a.out.h Normal file
View File

@ -0,0 +1,139 @@
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)exec.h 8.1 (Berkeley) 6/11/93
* from: FreeBSD: src/sys/sys/imgact_aout.h,v 1.18 2002/09/05 07:54:03 bde Exp $
* $FreeBSD$
*/
#ifndef _I386_AOUT_H_
#define _I386_AOUT_H_
#include <sys/types.h>
#include "endian.h"
#define __I386_LDPGSZ 4096
#define I386_N_GETMAGIC(ex) \
( LE32TOH((ex).a_midmag) & 0xffff )
#define I386_N_SETMAGIC(ex,mag,mid,flag) \
( (ex).a_midmag = HTOLE32((((flag) & 0x3f) <<26) | \
(((mid) & 0x03ff) << 16) | \
((mag) & 0xffff)) )
#define I386_N_ALIGN(ex,x) \
(I386_N_GETMAGIC(ex) == ZMAGIC || I386_N_GETMAGIC(ex) == QMAGIC ? \
((x) + __I386_LDPGSZ - 1) & ~(uint32_t)(__I386_LDPGSZ - 1) : (x))
/* Valid magic number check. */
#define I386_N_BADMAG(ex) \
(I386_N_GETMAGIC(ex) != OMAGIC && I386_N_GETMAGIC(ex) != NMAGIC && \
I386_N_GETMAGIC(ex) != ZMAGIC && I386_N_GETMAGIC(ex) != QMAGIC)
/* Address of the bottom of the text segment. */
/*
* This can not be done right. Abuse a_entry in some cases to handle kernels.
*/
#define I386_N_TXTADDR(ex) \
((I386_N_GETMAGIC(ex) == OMAGIC || I386_N_GETMAGIC(ex) == NMAGIC || \
I386_N_GETMAGIC(ex) == ZMAGIC) ? \
(LE32TOH((ex).a_entry) < LE32TOH((ex).a_text) ? 0 : \
LE32TOH((ex).a_entry) & ~__I386_LDPGSZ) : __I386_LDPGSZ)
/* Address of the bottom of the data segment. */
#define I386_N_DATADDR(ex) \
I386_N_ALIGN(ex, I386_N_TXTADDR(ex) + LE32TOH((ex).a_text))
/* Text segment offset. */
#define I386_N_TXTOFF(ex) \
(I386_N_GETMAGIC(ex) == ZMAGIC ? __I386_LDPGSZ : \
(I386_N_GETMAGIC(ex) == QMAGIC ? 0 : sizeof(struct exec)))
/* Data segment offset. */
#define I386_N_DATOFF(ex) \
I386_N_ALIGN(ex, I386_N_TXTOFF(ex) + LE32TOH((ex).a_text))
/* Relocation table offset. */
#define I386_N_RELOFF(ex) \
I386_N_ALIGN(ex, I386_N_DATOFF(ex) + LE32TOH((ex).a_data))
/* Symbol table offset. */
#define I386_N_SYMOFF(ex) \
(I386_N_RELOFF(ex) + LE32TOH((ex).a_trsize) + LE32TOH((ex).a_drsize))
/* String table offset. */
#define I386_N_STROFF(ex) (I386_N_SYMOFF(ex) + LE32TOH((ex).a_syms))
/*
* Header prepended to each a.out file.
* only manipulate the a_midmag field via the
* N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros in a.out.h
*/
struct i386_exec {
uint32_t a_midmag; /* flags<<26 | mid<<16 | magic */
uint32_t a_text; /* text segment size */
uint32_t a_data; /* initialized data size */
uint32_t a_bss; /* uninitialized data size */
uint32_t a_syms; /* symbol table size */
uint32_t a_entry; /* entry point */
uint32_t a_trsize; /* text relocation size */
uint32_t a_drsize; /* data relocation size */
};
#define a_magic a_midmag /* XXX Hack to work with current kern_execve.c */
/* a_magic */
#define OMAGIC 0407 /* old impure format */
#define NMAGIC 0410 /* read-only text */
#define ZMAGIC 0413 /* demand load format */
#define QMAGIC 0314 /* "compact" demand load format */
/* a_mid */
#define MID_ZERO 0 /* unknown - implementation dependent */
#define MID_SUN010 1 /* sun 68010/68020 binary */
#define MID_SUN020 2 /* sun 68020-only binary */
#define MID_I386 134 /* i386 BSD binary */
#define MID_SPARC 138 /* sparc */
#define MID_HP200 200 /* hp200 (68010) BSD binary */
#define MID_HP300 300 /* hp300 (68020+68881) BSD binary */
#define MID_HPUX 0x20C /* hp200/300 HP-UX binary */
#define MID_HPUX800 0x20B /* hp800 HP-UX binary */
/*
* a_flags
*/
#define EX_PIC 0x10 /* contains position independent code */
#define EX_DYNAMIC 0x20 /* contains run-time link-edit info */
#define EX_DPMASK 0x30 /* mask for the above */
#endif /* !_I386_AOUT_H_ */

41
usr.sbin/kgzip/kgzcmp.c
View File

@ -36,10 +36,11 @@
#include <stdlib.h>
#include <unistd.h>
#include <a.out.h>
#include "i386_a.out.h"
#include "aouthdr.h"
#include "elfhdr.h"
#include "endian.h"
#include "kgzip.h"
static void mk_data(const struct iodesc *i, const struct iodesc *,
@ -47,7 +48,7 @@ static void mk_data(const struct iodesc *i, const struct iodesc *,
static int ld_elf(const struct iodesc *, const struct iodesc *,
struct kgz_hdr *, const Elf32_Ehdr *);
static int ld_aout(const struct iodesc *, const struct iodesc *,
struct kgz_hdr *, const struct exec *);
struct kgz_hdr *, const struct i386_exec *);
/*
* Compress executable and output it in relocatable object format.
@ -56,6 +57,7 @@ void
kgzcmp(struct kgz_hdr *kh, const char *f1, const char *f2)
{
struct iodesc idi, ido;
struct kgz_hdr khle;
if ((idi.fd = open(idi.fname = f1, O_RDONLY)) == -1)
err(1, "%s", idi.fname);
@ -86,12 +88,19 @@ kgzcmp(struct kgz_hdr *kh, const char *f1, const char *f2)
xwrite(&ido, &ahdr0, sizeof(ahdr0));
} else {
struct kgz_elfhdr ehdr = elfhdr;
ehdr.st[KGZ_ST_KGZ_NDATA].st_size = kh->nsize;
ehdr.sh[KGZ_SH_DATA].sh_size += kh->nsize;
ehdr.st[KGZ_ST_KGZ_NDATA].st_size = HTOLE32(kh->nsize);
ehdr.sh[KGZ_SH_DATA].sh_size =
HTOLE32(LE32TOH(ehdr.sh[KGZ_SH_DATA].sh_size) + kh->nsize);
xseek(&ido, 0);
xwrite(&ido, &ehdr, sizeof(ehdr));
}
xwrite(&ido, kh, sizeof(*kh));
khle = *kh;
khle.dload = HTOLE32(khle.dload);
khle.dsize = HTOLE32(khle.dsize);
khle.isize = HTOLE32(khle.isize);
khle.entry = HTOLE32(khle.entry);
khle.nsize = HTOLE32(khle.nsize);
xwrite(&ido, &khle, sizeof(khle));
xclose(&ido);
xclose(&idi);
}
@ -104,7 +113,7 @@ mk_data(const struct iodesc * idi, const struct iodesc * ido,
struct kgz_hdr * kh, size_t off)
{
union {
struct exec ex;
struct i386_exec ex;
Elf32_Ehdr ee;
} hdr;
struct stat sb;
@ -118,7 +127,7 @@ mk_data(const struct iodesc * idi, const struct iodesc * ido,
fmt = 0;
if (n >= sizeof(hdr.ee) && IS_ELF(hdr.ee))
fmt = F_ELF;
else if (n >= sizeof(hdr.ex) && N_GETMAGIC(hdr.ex) == ZMAGIC)
else if (n >= sizeof(hdr.ex) && I386_N_GETMAGIC(hdr.ex) == ZMAGIC)
fmt = F_AOUT;
if (!fmt)
errx(1, "%s: Format not supported", idi->fname);
@ -207,20 +216,20 @@ ld_elf(const struct iodesc * idi, const struct iodesc * ido,
*/
static int
ld_aout(const struct iodesc * idi, const struct iodesc * ido,
struct kgz_hdr * kh, const struct exec * a)
struct kgz_hdr * kh, const struct i386_exec * a)
{
size_t load, addr;
load = addr = N_TXTADDR(*a);
xcopy(idi, ido, a->a_text, N_TXTOFF(*a));
addr += a->a_text;
if (N_DATADDR(*a) != addr)
load = addr = I386_N_TXTADDR(*a);
xcopy(idi, ido, LE32TOH(a->a_text), I386_N_TXTOFF(*a));
addr += LE32TOH(a->a_text);
if (I386_N_DATADDR(*a) != addr)
return -1;
xcopy(idi, ido, a->a_data, N_DATOFF(*a));
addr += a->a_data;
xcopy(idi, ido, LE32TOH(a->a_data), I386_N_DATOFF(*a));
addr += LE32TOH(a->a_data);
kh->dload = load;
kh->dsize = addr - load;
kh->isize = kh->dsize + a->a_bss;
kh->entry = a->a_entry;
kh->isize = kh->dsize + LE32TOH(a->a_bss);
kh->entry = LE32TOH(a->a_entry);
return 0;
}