sra@gordon.UUCP (Sreedhar Annamalai) (02/20/88)
I have been trying to install gnuemacs on the HP9000/840 and am having trouble compiling src/unexec.c. 'struct exec', MAGIC and N_BADMAG are being used in this file and must have been declared in <a.out.h> apparently. The <a.out.h> of HP9000/840 however does not have any of these definitions. I could get the structure definitions from a BSD4.2 machine and insert them but I doubt that will work for this System V machine. Suggestions? ------------------------------- necntc!gordon!sra necntc!gordon!sra@eddie.MIT.EDU
marvit@hpcea.CE.HP.COM (Peter Marvit) (02/23/88)
The Free Software Foundation has the necessary mods for compliing GNU on the HP9000/840 and hopefully will include them in the 18.50 distribution. In the mean time, try contating them directly (best) or send me some mail and I'll see what I can do (Internet only, please). -Peter Marvit HP Labs #include <std.disclaimer> # Don't use the silly "reply", be sure the address is <marvit@hplabs.hp.com>
aj@zyx.UUCP (Arndt Jonasson) (02/24/88)
In article <470@gordon.UUCP> sra@gordon.UUCP (Sreedhar Annamalai) writes: >I have been trying to install gnuemacs on the HP9000/840 and am >having trouble compiling src/unexec.c. 'struct exec', MAGIC and >N_BADMAG are being used in this file and must have been declared >in <a.out.h> apparently. The <a.out.h> of HP9000/840 however does >not have any of these definitions. I could get the structure >definitions from a BSD4.2 machine and insert them but I doubt that >will work for this System V machine. I thought of just replying by mail at first, but this probably interests more people, so I'll post it. Below is a shar archive, containing two files: unexec.c and unexec.s800. Both contain unexec functions that work. unexec.s800 just barely works. Don't try to run adb on the dumped image; it will dump core. unexec.c is my own; it saves the symbol table, but not any extra debug info (which means you can debug with adb, but not xdb in source mode). Arndt Jonasson, ZYX Sweden AB, Styrmansgatan 6, 114 54 Stockholm, Sweden email address: <backbone>!mcvax!enea!zyx!aj = aj@zyx.SE ------------------------------------------------------------------------ # This is a shell archive. Remove anything before this line, # then unpack it by saving it in a file and typing "sh file". # # Wrapped by arndt at lynx on Wed Feb 24 11:56:13 1988 # # This archive contains: # unexec.c unexec.s800 # LANG=""; export LANG echo x - unexec.c cat >unexec.c <<'@EOF' /* Public domain unexec for HP-UX series 800. Written 880220 Author: Arndt Jonasson uucp: aj@zyx.SE Bug: only saves sections 0 and 1 (code and data), not section 2 (debug info) */ #include <sys/types.h> #include <sys/stat.h> #include <filehdr.h> #include <aouthdr.h> #include <spacehdr.h> #include <scnhdr.h> extern int etext, edata, end; #include <fcntl.h> #define fseek lseek #define fclose close #define BAD_OPEN(f) (f == -1) #define slurp(f, x) if (read (f, &(x), sizeof (x)) != sizeof (x)) \ fatal_error ("slurp") static fatal_error (msg) char *msg; { printf ("%s\n", msg); exit (1); } #if 0 main (argc, argv) int argc; char **argv; { static int first_time = 1; if (first_time) { printf ("dumping to %s\n", argv[2]); first_time = 0; unexec (argv[2], argv[1], 0, 0, 0); } else printf ("Tjohej, dumpad!\n"); } #endif unexec (new, old, data_start, bss_start, entry_address) char *new, *old; unsigned data_start, bss_start, entry_address; { struct header hdr; struct som_exec_auxhdr auxhdr; int n, i; char buf[2048]; int in, out; char *start_of_data_area = (char *) 0x40000000; int file_data_start, data_size; if (entry_address != 0) fatal_error ("can't handle non-zero start address yet"); if (bss_start == 0) bss_start = (unsigned) sbrk (0); else fatal_error ("can't handle non-default bss start yet"); /* Currently, data_start is ignored */ in = open (old, O_RDONLY, 0); if (BAD_OPEN (in)) fatal_error ("couldn't open old file"); out = open (new, O_RDWR+O_CREAT, 0666); if (BAD_OPEN (out)) fatal_error ("couldn't open new file"); slurp (in, hdr); n = hdr.aux_header_location; fseek (in, hdr.aux_header_location, 0); slurp (in, auxhdr); if (auxhdr.som_auxhdr.type != HPUX_AUX_ID) fatal_error ("not right header type"); file_data_start = auxhdr.exec_dfile; data_size = auxhdr.exec_dsize; if (file_data_start % 2048 != 0) fatal_error ("data section doesn't start at 2K boundary"); #if 0 file_data_start = file_data_start + data_size; #endif fseek (in, 0, 0); for (i = 0; i < file_data_start; i += 2048) { if (read (in, buf, 2048) != 2048) fatal_error ("error in fread"); if (write (out, buf, 2048) != 2048) fatal_error ("error in fwrite"); } bss_start = (int) sbrk (0); bss_start = 2048 * ((bss_start - 1) / 2048 + 1); i = 0; while (i < ((char *) bss_start) - start_of_data_area) { if (write (out, start_of_data_area + i, 2048) != 2048) fatal_error ("error in fwrite 2"); i += 2048; } fseek (out, 0, 0); hdr.som_length = file_data_start + ((char *) bss_start) - start_of_data_area; if (write (out, &hdr, sizeof (hdr)) != sizeof (hdr)) fatal_error ("error in fwrite"); fseek (out, hdr.aux_header_location, 0); auxhdr.exec_dsize = ((char *) bss_start) - start_of_data_area; auxhdr.exec_bsize = 0; if (write (out, &auxhdr, sizeof (auxhdr)) != sizeof (auxhdr)) fatal_error ("error in fwrite"); fclose (in); fclose (out); mark_x (new); } static mark_x (name) char *name; { struct stat sbuf; int um = umask (777); umask (um); if (stat (name, &sbuf) < 0) fatal_error ("getting protection on %s", name); sbuf.st_mode |= 0111 & ~um; if (chmod (name, sbuf.st_mode) < 0) fatal_error ("setting protection on %s", name); } @EOF chmod 664 unexec.c echo x - unexec.s800 cat >unexec.s800 <<'@EOF' /* * Usage is * undump new-a.out-file [old-a.out-file] [core-file] * where old-a.out-file and core-file default to "a.out" and "core", * respectively. * * It doesn't preserve open files, and the program is re-entered at main * when you run it. */ /* * undump.c - Convert a core file to an a.out. * * Usage: * undump new-a.out [a.out] [core] */ #include <stdio.h> #include <sys/param.h> #include <sys/dir.h> #include <sys/signal.h> #include <sys/user.h> #include <sys/stat.h> #include <magic.h> #include "config.h" #define PSIZE 10240 struct header hdr,ohdr; unsigned datacnt; unsigned datastart; unsigned dataend; unexec( new_name, a_name, data_start, bss_start, entry_address) char *new_name, *a_name; unsigned data_start, bss_start, entry_address; { FILE *new, *a_out, *core; unsigned pagemask; /* avoid fclose hazards... */ char buf0[BUFSIZ]; char buf1[BUFSIZ]; pagemask = NBPG -1; datastart = DATA_START; dataend = ((sbrk(0) + pagemask) &~pagemask); if(dataend < datastart){ fprintf(stderr, "unexec error: data ends before beginning.\n"); return(-1); } datacnt = dataend - datastart; if ((a_out = fopen(a_name, "r")) == NULL) { perror(a_name); exit(1); } (void) setbuf(a_out, buf0); if ((new = fopen(new_name, "w")) == NULL) { perror(new_name); exit(1); } (void) setbuf(a_out, buf1); make_hdr(new, a_out, entry_address); copy_text(new, a_out); copy_data(new); fclose(new); fclose(a_out); mark_x(new_name); return(0); } /* * Make the header in the new a.out from the header in the old one * modified by the new data size. */ #ifdef hp9000s800 #undef N_BADMAG #define N_BADMAG(h) (h.a_magic != SHARE_MAGIC) struct som_exec_auxhdr auxhdr,oauxhdr; #endif hp9000s800 make_hdr(new, a_out, entry_addr) FILE *new, *a_out; unsigned entry_addr; { if (fread(&hdr, sizeof hdr, 1, a_out) != 1) { perror("Couldn't read header from a.out file"); exit(1); } ohdr = hdr; if (fread(&auxhdr, sizeof auxhdr, 1, a_out) != 1) { perror("Couldn't read auxiliary header from a.out file"); exit(1); } oauxhdr = auxhdr; printf("Bss segment size was %u\n", auxhdr.exec_bsize); printf("Data segment size was %u", auxhdr.exec_dsize); /* this is very hackly */ /* do just enough to make the exec loader happy */ auxhdr.exec_dsize = datacnt; auxhdr.exec_bsize = 0; /* all data is inited now! */ auxhdr.exec_tfile = roundup(hdr.aux_header_location + hdr.aux_header_size,NBPG); auxhdr.exec_dfile = roundup(auxhdr.exec_tfile+auxhdr.exec_tsize,NBPG); printf(" now is %u\n", auxhdr.exec_dsize); printf("Data segment loc was %u", auxhdr.exec_dmem); auxhdr.exec_dmem = datastart; printf(" now is %u\n", auxhdr.exec_dmem); /* entry point unchanged. */ if (fwrite(&hdr, sizeof hdr, 1, new) != 1) { perror("Couldn't write header to new a.out file"); exit(1); } if (fwrite(&auxhdr, sizeof auxhdr, 1, new) != 1) { perror("Couldn't write auxiliary header to new a.out file"); exit(1); } } /* * Copy the text from the a.out to the new a.out */ copy_text(new, a_out) FILE *new, *a_out; { char page[PSIZE]; int txtcnt = auxhdr.exec_tsize; if (hdr.a_magic == EXEC_MAGIC) { printf("a.out file is not shared text, this wont work.\n"); exit(1); } fseek(new, auxhdr.exec_tfile, 0); fseek(a_out, oauxhdr.exec_tfile, 0); while (txtcnt >= PSIZE) { if (fread(page, PSIZE, 1, a_out) != 1) { perror("Read failure on a.out text"); exit(1); } if (fwrite(page, PSIZE, 1, new) != 1) { perror("Write failure in text segment"); exit(1); } txtcnt -= PSIZE; } if (txtcnt) { if (fread(page, txtcnt, 1, a_out) != 1) { perror("Read failure on a.out text"); exit(1); } if (fwrite(page, txtcnt, 1, new) != 1) { perror("Write failure in text segment"); exit(1); } } } /* * copy the data from the core file to the new a.out */ copy_data(new) FILE *new; { fseek(new,auxhdr.exec_dfile,0); if (fwrite(datastart,datacnt,1,new) != 1) { perror("Write failure in data segment"); exit(1); } } /* * After succesfully building the new a.out, mark it executable */ mark_x(name) char *name; { struct stat sbuf; int um; um = umask(777); umask(um); if (stat(name, &sbuf) == -1) { perror ("Can't stat new a.out"); fprintf(stderr, "Setting protection to %o\n", 0777 & ~um); sbuf.st_mode = 0777; } sbuf.st_mode |= 0111 & ~um; if (chmod(name, sbuf.st_mode) == -1) perror("Couldn't change mode of new a.out to executable"); } @EOF chmod 664 unexec.s800 exit 0 -- Arndt Jonasson, ZYX Sweden AB, Styrmansgatan 6, 114 54 Stockholm, Sweden email address: <backbone>!mcvax!enea!zyx!aj = aj@zyx.SE
dcmartin@vangogh.Berkeley.EDU (David C. Martin) (03/02/88)
I have an HP9000/300 running 4.3bsd and am trying to get emacs running on it. I am using the s-bsd4_3.h file and my own m-hp300bsd43.h file. I can get the system to dump, but I get errors trying to save and create files. When it starts up it says: Stack underflow in byte code (byte compiler bug), pc = 112 And when I try to create a file I get: Stack underflow in byte code (byte compiler bug), pc = 108 Does anyone understand these errors and what they might indicate? Thanks dcm ps. Here is a listing of the m- file. /* m- file template. Copyright (C) 1985, 1986 Free Software Foundation, Inc. This file is part of GNU Emacs. GNU Emacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY. No author or distributor accepts responsibility to anyone for the consequences of using it or for whether it serves any particular purpose or works at all, unless he says so in writing. Refer to the GNU Emacs General Public License for full details. Everyone is granted permission to copy, modify and redistribute GNU Emacs, but only under the conditions described in the GNU Emacs General Public License. A copy of this license is supposed to have been given to you along with GNU Emacs so you can know your rights and responsibilities. It should be in a file named COPYING. Among other things, the copyright notice and this notice must be preserved on all copies. */ /* The following three symbols give information on the size of various data types. */ #define SHORTBITS 16 /* Number of bits in a short */ #define INTBITS 32 /* Number of bits in an int */ #define LONGBITS 32 /* Number of bits in a long */ /* Define BIG_ENDIAN iff lowest-numbered byte in a word is the most significant byte. */ #define BIG_ENDIAN /* Define NO_ARG_ARRAY if you cannot take the address of the first of a * group of arguments and treat it as an array of the arguments. */ /* #define NO_ARG_ARRAY */ /* Define WORD_MACHINE if addresses and such have * to be corrected before they can be used as byte counts. */ #define WORD_MACHINE /* Define how to take a char and sign-extend into an int. On machines where char is signed, this is a no-op. */ #define SIGN_EXTEND_CHAR(c) (c) /* Now define a symbol for the cpu type, if your compiler does not define it automatically: Ones defined so far include vax, m68000, ns16000, pyramid, orion, tahoe, APOLLO and many others */ #define m68000 #define COMPILER_REGISTER_BUG /* Use type int rather than a union, to represent Lisp_Object */ /* This is desirable for most machines. */ #define NO_UNION_TYPE /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend the 24-bit bit field into an int. In other words, if bit fields are always unsigned. If you use NO_UNION_TYPE, this flag does not matter. */ #define EXPLICIT_SIGN_EXTEND /* Data type of load average, as read out of kmem. */ #define LOAD_AVE_TYPE double /* Convert that into an integer that is 100 for a load average of 1.0 */ #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0)) /* Define CANNOT_DUMP on machines where unexec does not work. Then the function dump-emacs will not be defined and temacs will do (load "loadup") automatically unless told otherwise. */ /* #define CANNOT_DUMP */ /* Define VIRT_ADDR_VARIES if the virtual addresses of pure and impure space as loaded can vary, and even their relative order cannot be relied on. Otherwise Emacs assumes that text space precedes data space, numerically. */ #define VIRT_ADDR_VARIES /* Define C_ALLOCA if this machine does not support a true alloca and the one written in C should be used instead. Define HAVE_ALLOCA to say that the system provides a properly working alloca function and it should be used. Define neither one if an assembler-language alloca in the file alloca.s should be used. */ /* #define C_ALLOCA */ #define HAVE_ALLOCA /* Define NO_REMAP if memory segmentation makes it not work well to change the boundary between the text section and data section when Emacs is dumped. If you define this, the preloaded Lisp code will not be sharable; but that's better than failing completely. */ /* #define NO_REMAP */ ----- David C. Martin ----- Computer Science Division