218 lines
6.0 KiB
C
218 lines
6.0 KiB
C
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#ifdef COFF
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# include <filehdr.h>
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# include <aouthdr.h>
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# include <scnhdr.h>
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# include <syms.h>
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# ifndef N_BADMAG
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# define N_BADMAG(x) (0)
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# endif
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#else
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# include AOUT_H
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#endif
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extern void *sbrk();
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#if defined(hp9000s300) || defined(__hp9000s300) || defined(__hp9000s300__)
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static int getpagesize () {
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return EXEC_PAGESIZE;
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}
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#endif
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Object P_Dump (ofile) Object ofile; {
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#ifdef COFF
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static struct scnhdr thdr, dhdr, bhdr, scn;
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static struct filehdr hdr;
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static struct aouthdr ohdr;
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unsigned bias;
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unsigned lnno_start, syms_start;
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unsigned text_scn_start, data_scn_start;
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unsigned data_end;
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int pagemask = COFF_PAGESIZE-1;
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#else
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struct exec hdr, shdr;
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unsigned data_start, data_end;
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int pagemask = getpagesize () - 1;
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#endif
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char *afn;
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register n;
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char buf[BUFSIZ];
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Dump_Prolog;
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if (read (afd, (char *)&hdr, sizeof (hdr)) != sizeof (hdr)
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|| N_BADMAG(hdr)) {
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#ifdef COFF
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badaout:
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#endif
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Dump_Finalize;
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Primitive_Error ("corrupt a.out file");
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}
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#ifdef COFF
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data_end = ((unsigned)sbrk (0) + pagemask) & ~pagemask;
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syms_start = sizeof (hdr);
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if (hdr.f_opthdr > 0) {
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if (read (afd, (char *)&ohdr, sizeof (ohdr)) != sizeof (ohdr))
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goto badaout;
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}
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for (n = 0; n < hdr.f_nscns; n++) {
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if (read (afd, (char *)&scn, sizeof (scn)) != sizeof (scn))
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goto badaout;
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if (scn.s_scnptr > 0 && syms_start < scn.s_scnptr + scn.s_size)
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syms_start = scn.s_scnptr + scn.s_size;
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if (strcmp (scn.s_name, ".text") == 0)
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thdr = scn;
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else if (strcmp (scn.s_name, ".data") == 0)
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dhdr = scn;
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else if (strcmp (scn.s_name, ".bss") == 0)
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bhdr = scn;
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}
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hdr.f_flags |= (F_RELFLG|F_EXEC);
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ohdr.dsize = data_end - ohdr.data_start;
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ohdr.bsize = 0;
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thdr.s_size = ohdr.tsize;
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thdr.s_scnptr = sizeof (hdr) + sizeof (ohdr)
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+ hdr.f_nscns * sizeof (thdr);
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lnno_start = thdr.s_lnnoptr;
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text_scn_start = thdr.s_scnptr;
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dhdr.s_paddr = dhdr.s_vaddr = ohdr.data_start;
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dhdr.s_size = ohdr.dsize;
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dhdr.s_scnptr = thdr.s_scnptr + thdr.s_size;
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data_scn_start = dhdr.s_scnptr;
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bhdr.s_paddr = bhdr.s_vaddr = ohdr.data_start + ohdr.dsize;
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bhdr.s_size = ohdr.bsize;
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bhdr.s_scnptr = 0;
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bias = dhdr.s_scnptr + dhdr.s_size - syms_start;
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if (hdr.f_symptr > 0)
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hdr.f_symptr += bias;
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if (thdr.s_lnnoptr > 0)
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thdr.s_lnnoptr += bias;
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if (write (ofd, (char *)&hdr, sizeof (hdr)) != sizeof (hdr)) {
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badwrite:
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Dump_Finalize;
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Primitive_Error ("error writing dump file: ~E");
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}
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if (write (ofd, (char *)&ohdr, sizeof (ohdr)) != sizeof (ohdr))
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goto badwrite;
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if (write (ofd, (char *)&thdr, sizeof (thdr)) != sizeof (thdr))
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goto badwrite;
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if (write (ofd, (char *)&dhdr, sizeof (dhdr)) != sizeof (dhdr))
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goto badwrite;
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if (write (ofd, (char *)&bhdr, sizeof (bhdr)) != sizeof (bhdr))
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goto badwrite;
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lseek (ofd, (off_t)text_scn_start, 0);
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if (write (ofd, (char *)ohdr.text_start, ohdr.tsize) != ohdr.tsize)
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goto badwrite;
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Was_Dumped = 1;
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lseek (ofd, (off_t)data_scn_start, 0);
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if (write (ofd, (char *)ohdr.data_start, ohdr.dsize) != ohdr.dsize)
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goto badwrite;
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lseek (afd, lnno_start ? (off_t)lnno_start : (off_t)syms_start, 0);
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#else
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close (afd);
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#if defined(__bsdi__)
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data_start = N_DATADDR(hdr);
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#else
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data_start = hdr.a_text;
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#if defined(sun) || defined(__sun__)
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data_start += pagemask+1;
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#endif
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data_start = (data_start + SEG_SIZ-1) & ~(SEG_SIZ-1);
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#endif
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data_end = (unsigned)sbrk (0);
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#if !defined(__bsdi__)
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data_end = (data_end + pagemask) & ~pagemask;
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#endif
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hdr.a_data = data_end - data_start;
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hdr.a_bss = 0;
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hdr.a_trsize = hdr.a_drsize = 0;
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afn = Loader_Input;
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if (!afn)
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afn = A_Out_Name;
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if ((afd = open (afn, O_RDONLY|O_BINARY)) == -1) {
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Dump_Finalize;
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Primitive_Error ("cannot open symbol table file: ~E");
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}
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if (read (afd, (char *)&shdr, sizeof (shdr)) != sizeof (shdr)
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|| N_BADMAG(shdr)) {
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Dump_Finalize;
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Primitive_Error ("corrupt symbol table file");
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}
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#if defined(hp9000s300) || defined(__hp9000s300) || defined(__hp9000s300__)
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hdr.a_lesyms = shdr.a_lesyms;
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#else
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hdr.a_syms = shdr.a_syms;
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#endif
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(void)lseek (ofd, (off_t)FILE_TEXT_START, 0);
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n = hdr.a_text - TEXT_LENGTH_ADJ;
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if (write (ofd, (char *)MEM_TEXT_START, n) != n) {
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badwrite:
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Dump_Finalize;
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Primitive_Error ("error writing dump file: ~E");
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}
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Was_Dumped = 1;
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#if defined(hp9000s300) || defined(__hp9000s300) || defined(__hp9000s300__)
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(void)lseek (ofd, (off_t)DATA_OFFSET(hdr), 0);
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#endif
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#if defined(__bsdi__)
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(void)lseek (ofd, (off_t)N_DATOFF(hdr), 0);
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#endif
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#ifdef GENERATIONAL_GC
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n = data_end - data_start;
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if (write (ofd, (char *)data_start, n) != n)
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goto badwrite;
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#else
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if (Heap_Start > Free_Start) {
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n = (unsigned)Free_Start - data_start;
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if (write (ofd, (char *)data_start, n) != n)
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goto badwrite;
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(void)lseek (ofd, (off_t)(Free_End - Free_Start), 1);
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n = Hp - Heap_Start;
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if (write (ofd, Heap_Start, n) != n)
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goto badwrite;
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(void)lseek (ofd, (off_t)(Heap_End - Hp), 1);
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n = data_end - (unsigned)Heap_End;
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if (write (ofd, Heap_End, n) != n)
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goto badwrite;
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} else {
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n = (unsigned)Hp - data_start;
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if (write (ofd, (char *)data_start, n) != n)
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goto badwrite;
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(void)lseek (ofd, (off_t)(Free_End - Hp), 1);
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n = data_end - (unsigned)Free_End;
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if (write (ofd, Free_End, n) != n)
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goto badwrite;
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}
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#endif
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#if defined(hp9000s300) || defined(__hp9000s300) || defined(__hp9000s300__)
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(void)lseek (afd, (off_t)LESYM_OFFSET(shdr), 0);
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(void)lseek (ofd, (off_t)LESYM_OFFSET(hdr), 0);
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#else
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(void)lseek (afd, (off_t)N_SYMOFF(shdr), 0);
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#if defined(__bsdi__)
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(void)lseek (ofd, (off_t)N_SYMOFF(hdr), 0);
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#endif
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#endif
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#endif /* !COFF */
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while ((n = read (afd, buf, BUFSIZ)) > 0) {
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if (write (ofd, buf, n) != n)
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goto badwrite;
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}
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if (n < 0) {
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Dump_Finalize;
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Primitive_Error ("error reading symbol table: ~E");
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}
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#if !defined(COFF)
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(void)lseek (ofd, (off_t)0L, 0);
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if (write (ofd, (char *)&hdr, sizeof (hdr)) != sizeof (hdr))
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goto badwrite;
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#endif
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Dump_Epilog;
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}
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