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NetBSD/usr.sbin/mopd/common/file.c

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/* $NetBSD: file.c,v 1.5 1998/02/07 00:03:22 cgd Exp $ */
/*
* Copyright (c) 1995-96 Mats O Jansson. 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 Mats O Jansson.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: file.c,v 1.5 1998/02/07 00:03:22 cgd Exp $");
#endif
#include "os.h"
#include "common.h"
#include "file.h"
#include "mopdef.h"
#ifndef NOAOUT
#if defined(__NetBSD__) || defined(__OpenBSD__)
#include <sys/exec_aout.h>
#endif
#if defined(__bsdi__)
#define NOAOUT
#endif
#if defined(__FreeBSD__)
#include <sys/imgact_aout.h>
#endif
#if !defined(MID_VAX)
#define MID_VAX 140
#endif
#endif
int getCLBYTES __P((int));
int getMID __P((int, int));
void
mopFilePutLX(buf, index, value, cnt)
u_char *buf;
int index, cnt;
u_int32_t value;
{
int i;
for (i = 0; i < cnt; i++) {
buf[index+i] = value % 256;
value = value / 256;
}
}
void
mopFilePutBX(buf, index, value, cnt)
u_char *buf;
int index, cnt;
u_int32_t value;
{
int i;
for (i = 0; i < cnt; i++) {
buf[index+cnt-1-i] = value % 256;
value = value / 256;
}
}
u_int32_t
mopFileGetLX(buf, index, cnt)
u_char *buf;
int index, cnt;
{
u_int32_t ret = 0;
int i;
for (i = 0; i < cnt; i++) {
ret = ret*256 + buf[index+cnt-1-i];
}
return(ret);
}
u_int32_t
mopFileGetBX(buf, index, cnt)
u_char *buf;
int index, cnt;
{
u_int32_t ret = 0;
int i;
for (i = 0; i < cnt; i++) {
ret = ret*256 + buf[index+i];
}
return(ret);
}
void
mopFileSwapX(buf, index, cnt)
u_char *buf;
int index, cnt;
{
int i;
u_char c;
for (i = 0; i < (cnt / 2); i++) {
c = buf[index+i];
buf[index+i] = buf[index+cnt-1-i];
buf[index+cnt-1-i] = c;
}
}
int
CheckMopFile(fd)
int fd;
{
u_char header[512];
short image_type;
if (read(fd, header, 512) != 512)
return(-1);
(void)lseek(fd, (off_t) 0, SEEK_SET);
image_type = (u_short)(header[IHD_W_ALIAS+1]*256 +
header[IHD_W_ALIAS]);
switch(image_type) {
case IHD_C_NATIVE: /* Native mode image (VAX) */
case IHD_C_RSX: /* RSX image produced by TKB */
case IHD_C_BPA: /* BASIC plus analog */
case IHD_C_ALIAS: /* Alias */
case IHD_C_CLI: /* Image is CLI */
case IHD_C_PMAX: /* PMAX system image */
case IHD_C_ALPHA: /* ALPHA system image */
break;
default:
return(-1);
}
return(0);
}
int
GetMopFileInfo(fd, load, xfr)
int fd;
u_int32_t *load, *xfr;
{
u_char header[512];
short image_type;
u_int32_t load_addr, xfr_addr, isd, iha, hbcnt, isize;
if (read(fd, header, 512) != 512)
return(-1);
image_type = (u_short)(header[IHD_W_ALIAS+1]*256 +
header[IHD_W_ALIAS]);
switch(image_type) {
case IHD_C_NATIVE: /* Native mode image (VAX) */
isd = (header[IHD_W_SIZE+1]*256 +
header[IHD_W_SIZE]);
iha = (header[IHD_W_ACTIVOFF+1]*256 +
header[IHD_W_ACTIVOFF]);
hbcnt = (header[IHD_B_HDRBLKCNT]);
isize = (header[isd+ISD_W_PAGCNT+1]*256 +
header[isd+ISD_W_PAGCNT]) * 512;
load_addr = ((header[isd+ISD_V_VPN+1]*256 +
header[isd+ISD_V_VPN]) & ISD_M_VPN)
* 512;
xfr_addr = (header[iha+IHA_L_TFRADR1+3]*0x1000000 +
header[iha+IHA_L_TFRADR1+2]*0x10000 +
header[iha+IHA_L_TFRADR1+1]*0x100 +
header[iha+IHA_L_TFRADR1]) & 0x7fffffff;
printf("Native Image (VAX)\n");
printf("Header Block Count: %d\n",hbcnt);
printf("Image Size: %08x\n",isize);
printf("Load Address: %08x\n",load_addr);
printf("Transfer Address: %08x\n",xfr_addr);
break;
case IHD_C_RSX: /* RSX image produced by TKB */
hbcnt = header[L_BBLK+1]*256 + header[L_BBLK];
isize = (header[L_BLDZ+1]*256 + header[L_BLDZ]) * 64;
load_addr = header[L_BSA+1]*256 + header[L_BSA];
xfr_addr = header[L_BXFR+1]*256 + header[L_BXFR];
printf("RSX Image\n");
printf("Header Block Count: %d\n",hbcnt);
printf("Image Size: %08x\n",isize);
printf("Load Address: %08x\n",load_addr);
printf("Transfer Address: %08x\n",xfr_addr);
break;
case IHD_C_BPA: /* BASIC plus analog */
printf("BASIC-Plus Image, not supported\n");
return(-1);
break;
case IHD_C_ALIAS: /* Alias */
printf("Alias, not supported\n");
return(-1);
break;
case IHD_C_CLI: /* Image is CLI */
printf("CLI, not supported\n");
return(-1);
break;
case IHD_C_PMAX: /* PMAX system image */
isd = (header[IHD_W_SIZE+1]*256 +
header[IHD_W_SIZE]);
iha = (header[IHD_W_ACTIVOFF+1]*256 +
header[IHD_W_ACTIVOFF]);
hbcnt = (header[IHD_B_HDRBLKCNT]);
isize = (header[isd+ISD_W_PAGCNT+1]*256 +
header[isd+ISD_W_PAGCNT]) * 512;
load_addr = (header[isd+ISD_V_VPN+1]*256 +
header[isd+ISD_V_VPN]) * 512;
xfr_addr = (header[iha+IHA_L_TFRADR1+3]*0x1000000 +
header[iha+IHA_L_TFRADR1+2]*0x10000 +
header[iha+IHA_L_TFRADR1+1]*0x100 +
header[iha+IHA_L_TFRADR1]);
printf("PMAX Image \n");
printf("Header Block Count: %d\n",hbcnt);
printf("Image Size: %08x\n",isize);
printf("Load Address: %08x\n",load_addr);
printf("Transfer Address: %08x\n",xfr_addr);
break;
case IHD_C_ALPHA: /* ALPHA system image */
isd = (header[EIHD_L_ISDOFF+3]*0x1000000 +
header[EIHD_L_ISDOFF+2]*0x10000 +
header[EIHD_L_ISDOFF+1]*0x100 +
header[EIHD_L_ISDOFF]);
hbcnt = (header[EIHD_L_HDRBLKCNT+3]*0x1000000 +
header[EIHD_L_HDRBLKCNT+2]*0x10000 +
header[EIHD_L_HDRBLKCNT+1]*0x100 +
header[EIHD_L_HDRBLKCNT]);
isize = (header[isd+EISD_L_SECSIZE+3]*0x1000000 +
header[isd+EISD_L_SECSIZE+2]*0x10000 +
header[isd+EISD_L_SECSIZE+1]*0x100 +
header[isd+EISD_L_SECSIZE]);
load_addr = 0;
xfr_addr = 0;
printf("Alpha Image \n");
printf("Header Block Count: %d\n",hbcnt);
printf("Image Size: %08x\n",isize);
printf("Load Address: %08x\n",load_addr);
printf("Transfer Address: %08x\n",xfr_addr);
break;
default:
printf("Unknown Image (%d)\n",image_type);
return(-1);
}
if (load != NULL) {
*load = load_addr;
}
if (xfr != NULL) {
*xfr = xfr_addr;
}
return(0);
}
#ifndef NOAOUT
int
getMID(old_mid,new_mid)
int old_mid, new_mid;
{
int mid;
mid = old_mid;
switch (new_mid) {
case MID_I386:
mid = MID_I386;
break;
#ifdef MID_M68K
case MID_M68K:
mid = MID_M68K;
break;
#endif
#ifdef MID_M68K4K
case MID_M68K4K:
mid = MID_M68K4K;
break;
#endif
#ifdef MID_NS32532
case MID_NS32532:
mid = MID_NS32532;
break;
#endif
case MID_SPARC:
mid = MID_SPARC;
break;
#ifdef MID_PMAX
case MID_PMAX:
mid = MID_PMAX;
break;
#endif
#ifdef MID_VAX
case MID_VAX:
mid = MID_VAX;
break;
#endif
#ifdef MID_ALPHA
case MID_ALPHA:
mid = MID_ALPHA;
break;
#endif
#ifdef MID_MIPS
case MID_MIPS:
mid = MID_MIPS;
break;
#endif
#ifdef MID_ARM6
case MID_ARM6:
mid = MID_ARM6;
break;
#endif
default:
break;
}
return(mid);
}
int
getCLBYTES(mid)
int mid;
{
int clbytes;
switch (mid) {
#ifdef MID_VAX
case MID_VAX:
clbytes = 1024;
break;
#endif
case MID_I386:
#ifdef MID_M68K4K
case MID_M68K4K:
#endif
#ifdef MID_NS32532
case MID_NS32532:
#endif
case MID_SPARC: /* It might be 8192 */
#ifdef MID_PMAX
case MID_PMAX:
#endif
#ifdef MID_MIPS
case MID_MIPS:
#endif
#ifdef MID_ARM6
case MID_ARM6:
#endif
clbytes = 4096;
break;
#ifdef MID_M68K
case MID_M68K:
#endif
#ifdef MID_ALPHA
case MID_ALPHA:
#endif
#if defined(MID_M68K) || defined(MID_ALPHA)
clbytes = 8192;
break;
#endif
default:
clbytes = 0;
}
return(clbytes);
}
#endif
int
CheckAOutFile(fd)
int fd;
{
#ifdef NOAOUT
return(-1);
#else
struct exec ex, ex_swap;
int mid = -1;
if (read(fd, (char *)&ex, sizeof(ex)) != sizeof(ex))
return(-1);
(void)lseek(fd, (off_t) 0, SEEK_SET);
if (read(fd, (char *)&ex_swap, sizeof(ex_swap)) != sizeof(ex_swap))
return(-1);
(void)lseek(fd, (off_t) 0, SEEK_SET);
mid = getMID(mid, N_GETMID (ex));
if (mid == -1) {
mid = getMID(mid, N_GETMID (ex_swap));
}
if (mid != -1) {
return(0);
} else {
return(-1);
}
#endif NOAOUT
}
int
GetAOutFileInfo(fd, load, xfr, a_text, a_text_fill,
a_data, a_data_fill, a_bss, a_bss_fill, aout)
int fd;
u_int32_t *load, *xfr, *a_text, *a_text_fill;
u_int32_t *a_data, *a_data_fill, *a_bss, *a_bss_fill;
int *aout;
{
#ifdef NOAOUT
return(-1);
#else
struct exec ex, ex_swap;
u_int32_t mid = -1;
u_int32_t magic, clbytes, clofset;
if (read(fd, (char *)&ex, sizeof(ex)) != sizeof(ex))
return(-1);
(void)lseek(fd, (off_t) 0, SEEK_SET);
if (read(fd, (char *)&ex_swap, sizeof(ex_swap)) != sizeof(ex_swap))
return(-1);
mopFileSwapX((u_char *)&ex_swap, 0, 4);
mid = getMID(mid, N_GETMID (ex));
if (mid == -1) {
mid = getMID(mid, N_GETMID (ex_swap));
if (mid != -1) {
mopFileSwapX((u_char *)&ex, 0, 4);
}
}
if (mid == -1) {
return(-1);
}
if (N_BADMAG (ex)) {
return(-1);
}
switch (mid) {
case MID_I386:
#ifdef MID_NS32532
case MID_NS32532:
#endif
#ifdef MID_PMAX
case MID_PMAX:
#endif
#ifdef MID_VAX
case MID_VAX:
#endif
#ifdef MID_ALPHA
case MID_ALPHA:
#endif
#ifdef MID_ARM6
case MID_ARM6:
#endif
ex.a_text = mopFileGetLX((u_char *)&ex_swap, 4, 4);
ex.a_data = mopFileGetLX((u_char *)&ex_swap, 8, 4);
ex.a_bss = mopFileGetLX((u_char *)&ex_swap, 12, 4);
ex.a_syms = mopFileGetLX((u_char *)&ex_swap, 16, 4);
ex.a_entry = mopFileGetLX((u_char *)&ex_swap, 20, 4);
ex.a_trsize= mopFileGetLX((u_char *)&ex_swap, 24, 4);
ex.a_drsize= mopFileGetLX((u_char *)&ex_swap, 28, 4);
break;
#ifdef MID_M68K
case MID_M68K:
#endif
#ifdef MID_M68K4K
case MID_M68K4K:
#endif
case MID_SPARC:
#ifdef MID_MIPS
case MID_MIPS:
#endif
ex.a_text = mopFileGetBX((u_char *)&ex_swap, 4, 4);
ex.a_data = mopFileGetBX((u_char *)&ex_swap, 8, 4);
ex.a_bss = mopFileGetBX((u_char *)&ex_swap, 12, 4);
ex.a_syms = mopFileGetBX((u_char *)&ex_swap, 16, 4);
ex.a_entry = mopFileGetBX((u_char *)&ex_swap, 20, 4);
ex.a_trsize= mopFileGetBX((u_char *)&ex_swap, 24, 4);
ex.a_drsize= mopFileGetBX((u_char *)&ex_swap, 28, 4);
break;
default:
break;
}
printf("a.out image (");
switch (N_GETMID (ex)) {
case MID_I386:
printf("i386");
break;
#ifdef MID_M68K
case MID_M68K:
printf("m68k");
break;
#endif
#ifdef MID_M68K4K
case MID_M68K4K:
printf("m68k 4k");
break;
#endif
#ifdef MID_NS32532
case MID_NS32532:
printf("pc532");
break;
#endif
case MID_SPARC:
printf("sparc");
break;
#ifdef MID_PMAX
case MID_PMAX:
printf("pmax");
break;
#endif
#ifdef MID_VAX
case MID_VAX:
printf("vax");
break;
#endif
#ifdef MID_ALPHA
case MID_ALPHA:
printf("alpha");
break;
#endif
#ifdef MID_MIPS
case MID_MIPS:
printf("mips");
break;
#endif
#ifdef MID_ARM6
case MID_ARM6:
printf("arm32");
break;
#endif
default:
break;
}
printf(") Magic: ");
switch (N_GETMAGIC (ex)) {
case OMAGIC:
printf("OMAGIC");
break;
case NMAGIC:
printf("NMAGIC");
break;
case ZMAGIC:
printf("ZMAGIC");
break;
case QMAGIC:
printf("QMAGIC");
break;
default:
printf("Unknown %ld", (long) N_GETMAGIC (ex));
}
printf("\n");
printf("Size of text: %08lx\n", (long)ex.a_text);
printf("Size of data: %08lx\n", (long)ex.a_data);
printf("Size of bss: %08lx\n", (long)ex.a_bss);
printf("Size of symbol tab: %08lx\n", (long)ex.a_syms);
printf("Transfer Address: %08lx\n", (long)ex.a_entry);
printf("Size of reloc text: %08lx\n", (long)ex.a_trsize);
printf("Size of reloc data: %08lx\n", (long)ex.a_drsize);
magic = N_GETMAGIC (ex);
clbytes = getCLBYTES(mid);
clofset = clbytes - 1;
if (load != NULL) {
*load = 0;
}
if (xfr != NULL) {
*xfr = ex.a_entry;
}
if (a_text != NULL) {
*a_text = ex.a_text;
}
if (a_text_fill != NULL) {
if (magic == ZMAGIC || magic == NMAGIC) {
*a_text_fill = clbytes - (ex.a_text & clofset);
if (*a_text_fill == clbytes) {
*a_text_fill = 0;
}
} else {
*a_text_fill = 0;
}
}
if (a_data != NULL) {
*a_data = ex.a_data;
}
if (a_data_fill != NULL) {
if (magic == ZMAGIC || magic == NMAGIC) {
*a_data_fill = clbytes - (ex.a_data & clofset);
if (*a_data_fill == clbytes) {
*a_data_fill = 0;
}
} else {
*a_data_fill = 0;
}
}
if (a_bss != NULL) {
*a_bss = ex.a_bss;
}
if (a_bss_fill != NULL) {
if (magic == ZMAGIC || magic == NMAGIC) {
*a_bss_fill = clbytes - (ex.a_bss & clofset);
if (*a_bss_fill == clbytes) {
*a_bss_fill = 0;
}
} else {
*a_bss_fill = clbytes -
((ex.a_text+ex.a_data+ex.a_bss) & clofset);
if (*a_text_fill == clbytes) {
*a_text_fill = 0;
}
}
}
if (aout != NULL) {
*aout = mid;
}
return(0);
#endif NOAOUT
}
int
GetFileInfo(fd, load, xfr, aout,
a_text, a_text_fill, a_data, a_data_fill, a_bss, a_bss_fill)
int fd, *aout;
u_int32_t *load, *xfr, *a_text, *a_text_fill;
u_int32_t *a_data, *a_data_fill, *a_bss, *a_bss_fill;
{
int err;
err = CheckAOutFile(fd);
if (err == 0) {
err = GetAOutFileInfo(fd, load, xfr,
a_text, a_text_fill,
a_data, a_data_fill,
a_bss, a_bss_fill,
aout);
if (err != 0) {
return(-1);
}
} else {
err = CheckMopFile(fd);
if (err == 0) {
err = GetMopFileInfo(fd, load, xfr);
if (err != 0) {
return(-1);
}
*aout = -1;
} else {
return(-1);
}
}
return(0);
}
ssize_t
mopFileRead(dlslot, buf)
struct dllist *dlslot;
u_char *buf;
{
ssize_t len, outlen;
int bsz;
int32_t pos, notdone, total;
if (dlslot->aout == -1) {
len = read(dlslot->ldfd,buf,dlslot->dl_bsz);
} else {
bsz = dlslot->dl_bsz;
pos = dlslot->a_lseek;
len = 0;
total = dlslot->a_text;
if (pos < total) {
notdone = total - pos;
if (notdone <= bsz) {
outlen = read(dlslot->ldfd,&buf[len],notdone);
} else {
outlen = read(dlslot->ldfd,&buf[len],bsz);
}
len = len + outlen;
pos = pos + outlen;
bsz = bsz - outlen;
}
total = total + dlslot->a_text_fill;
if ((bsz > 0) && (pos < total)) {
notdone = total - pos;
if (notdone <= bsz) {
outlen = notdone;
} else {
outlen = bsz;
}
memset(&buf[len], 0, outlen);
len = len + outlen;
pos = pos + outlen;
bsz = bsz - outlen;
}
total = total + dlslot->a_data;
if ((bsz > 0) && (pos < total)) {
notdone = total - pos;
if (notdone <= bsz) {
outlen = read(dlslot->ldfd,&buf[len],notdone);
} else {
outlen = read(dlslot->ldfd,&buf[len],bsz);
}
len = len + outlen;
pos = pos + outlen;
bsz = bsz - outlen;
}
total = total + dlslot->a_data_fill;
if ((bsz > 0) && (pos < total)) {
notdone = total - pos;
if (notdone <= bsz) {
outlen = notdone;
} else {
outlen = bsz;
}
memset(&buf[len], 0, outlen);
len = len + outlen;
pos = pos + outlen;
bsz = bsz - outlen;
}
total = total + dlslot->a_bss;
if ((bsz > 0) && (pos < total)) {
notdone = total - pos;
if (notdone <= bsz) {
outlen = notdone;
} else {
outlen = bsz;
}
memset(&buf[len], 0, outlen);
len = len + outlen;
pos = pos + outlen;
bsz = bsz - outlen;
}
total = total + dlslot->a_bss_fill;
if ((bsz > 0) && (pos < total)) {
notdone = total - pos;
if (notdone <= bsz) {
outlen = notdone;
} else {
outlen = bsz;
}
memset(&buf[len], 0, outlen);
len = len + outlen;
pos = pos + outlen;
bsz = bsz - outlen;
}
dlslot->a_lseek = pos;
}
return(len);
}
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