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- From: turner@imagen.UUCP <talcott!topaz!Shasta!imagen!Jim.Turner>
- Subject: unc - 68000 disassembler (Part 2 of 2)
- Newsgroups: mod.sources
- Approved: jpn@panda.UUCP
-
- Mod.sources: Volume 4, Issue 31
- Submitted by: turner@imagen.UUCP <talcott!topaz!Shasta!imagen!Jim.Turner>
-
- #! /bin/sh
- # This is a shell archive, meaning:
- # 1. Remove everything above the #! /bin/sh line.
- # 2. Save the resulting text in a file.
- # 3. Execute the file with /bin/sh (not csh) to create the files:
- # iset.c
- # libmtch.c
- # main.c
- # prin.c
- # robj.c
- # This archive created: Thu Mar 13 18:56:11 1986
- export PATH; PATH=/bin:$PATH
- echo shar: extracting "'iset.c'" '(19541 characters)'
- if test -f 'iset.c'
- then
- echo shar: will not over-write existing file "'iset.c'"
- else
- cat << \SHAR_EOF > 'iset.c'
- /*
- * SCCS: @(#)iset.c 1.2 11/2/84 14:18:23
- * Decode instructions.
- *
- ***********************************************************************
- * This software is copyright of
- *
- * John M Collins
- * 47 Cedarwood Drive
- * St Albans
- * Herts, AL4 0DN
- * England +44 727 57267
- *
- * and is released into the public domain on the following conditions:
- *
- * 1. No free maintenance will be guaranteed.
- * 2. Nothing may be based on this software without
- * acknowledgement, including incorporation of this
- * notice.
- *
- * Notwithstanding the above, the author welcomes correspondence and bug
- * fixes.
- ***********************************************************************
- */
-
- #include <stdio.h>
- #include <a.out.h>
- #include "unc.h"
-
- ef_fids mainfile;
- long endt;
-
- void gette(), putte();
- void mkdref();
- long gettw();
- symbol textlab();
-
- int l1(), l2(), el1(), lea(), lmove(), lcbch(), jj();
- int limed(), lsbit(), lmvml(), lone(), loone(), lonew(), lonel();
-
- int pmove(), pcbch(), pdbcc(), pscc(), pcs(), pmovc(), pstop(), pexg();
- int pimed(), pmovp(), psbit(), pdbit(), pcs2(), pone(), ppea();
- int plea(), pdreg(), pmvml(), ptrap(), plink(), pareg(), podreg();
- int pqu(), pmqu(), ptreg(), pcmpm(), pomode(), pmshf(), pshf();
-
- struct opstr {
- unsigned short mask;
- unsigned short match;
- int (*opsize)();
- int (*opprin)();
- char *prarg;
- } optab[] = {
- 0xf000, 0x2000, lmove, pmove, "l",
- 0xf000, 0x3000, lmove, pmove, "w",
- 0xf000, 0x1000, lmove, pmove, "b",
- 0xf000, 0x6000, lcbch, pcbch, 0,
- 0xffbf, 0x003c, l2, pcs, "or",
- 0xff00, 0x0000, limed, pimed, "or",
- 0xffbf, 0x023c, l2, pcs, "and",
- 0xff00, 0x0200, limed, pimed, "and",
- 0xff00, 0x0400, limed, pimed, "sub",
- 0xff00, 0x0600, limed, pimed, "add",
- 0xffbf, 0x0a3c, l2, pcs, "eor",
- 0xff00, 0x0a00, limed, pimed, "eor",
- 0xff00, 0x0c00, limed, pimed, "cmp",
- 0xf138, 0x0108, l2, pmovp, 0,
- 0xff00, 0x0800, lsbit, psbit, 0,
- 0xf100, 0x0100, lonew, pdbit, 0,
- 0xffc0, 0x40c0, lonew, pcs2, "sr",
- 0xff00, 0x4000, lone, pone, "negx",
- 0xff00, 0x4200, lone, pone, "clr",
- 0xffc0, 0x44c0, lonew, pcs2, "cc",
- 0xff00, 0x4400, lone, pone, "neg",
- 0xffc0, 0x46c0, lonew, pcs2, "sr",
- 0xff00, 0x4600, lone, pone, "not",
- 0xffc0, 0x4800, lonew, ppea, "nbcd",
- 0xfff8, 0x4840, l1, pdreg, "swap",
- 0xffc0, 0x4840, lonel, ppea, "pea",
- 0xfff8, 0x4880, l1, pdreg, "extw",
- 0xfff8, 0x48c0, l1, pdreg, "extl",
- 0xfb80, 0x4880, lmvml, pmvml, 0,
- 0xffc0, 0x4ac0, lonew, ppea, "tas",
- 0xff00, 0x4a00, lone, pone, "tst",
- 0xfff0, 0x4e40, l1, ptrap, 0,
- 0xfff8, 0x4e50, l2, plink, 0,
- 0xfff8, 0x4e58, l1, pareg, "unlk\t%s",
- 0xfff8, 0x4e60, l1, pareg, "movl\t%s,usp",
- 0xfff8, 0x4e68, l1, pareg, "movl\tusp,%s",
- 0xffff, 0x4e70, l1, pareg, "reset",
- 0xffff, 0x4e71, l1, pareg, "nop",
- 0xffff, 0x4e72, l2, pstop, 0,
- 0xffff, 0x4e73, el1, pareg, "rte",
- 0xffff, 0x4e75, el1, pareg, "rts",
- 0xffff, 0x4e76, l1, pareg, "trapv",
- 0xffff, 0x4e77, el1, pareg, "rtr",
- 0xfffe, 0x4e7a, l2, pmovc, 0,
- 0xffc0, 0x4e80, jj, ppea, "jsr",
- 0xffc0, 0x4ec0, jj, ppea, "jmp",
- 0xf1c0, 0x4180, lonew, podreg,"chk",
- 0xf1c0, 0x41c0, lonel, plea, 0,
- 0xf0f8, 0x50c8, lcbch, pdbcc, 0,
- 0xf0c0, 0x50c0, lonew, pscc, 0,
- 0xf100, 0x5000, lone, pqu, "add",
- 0xf100, 0x5100, lone, pqu, "sub",
- 0xf100, 0x7000, l1, pmqu, 0,
- 0xf1c0, 0x80c0, lonew, podreg,"divu",
- 0xf1c0, 0x81c0, lonew, podreg,"divs",
- 0xf1f0, 0x8100, l1, ptreg, "sbcd",
- 0xf000, 0x8000, loone, pomode,"or",
- 0xf1f0, 0x9100, l1, ptreg, "subxb",
- 0xf1f0, 0x9140, l1, ptreg, "subxw",
- 0xf1f0, 0x9180, l1, ptreg, "subxl",
- 0xf000, 0x9000, loone, pomode,"sub",
- 0xf1f8, 0xb108, l1, pcmpm, "cmpmb",
- 0xf1f8, 0xb148, l1, pcmpm, "cmpmw",
- 0xf1f8, 0xb188, l1, pcmpm, "cmpml",
- 0xf100, 0xb000, loone, pomode,"cmp",
- 0xf1c0, 0xb1c0, loone, pomode,"cmp",
- 0xf100, 0xb100, loone, pomode,"eor",
- 0xf1c0, 0xc0c0, lonew, podreg,"mulu",
- 0xf1c0, 0xc1c0, lonew, podreg,"muls",
- 0xf1f0, 0xc100, l1, ptreg, "abcd",
- 0xf130, 0xc100, l1, pexg, 0,
- 0xf000, 0xc000, loone, pomode,"and",
- 0xf1f0, 0xd100, l1, ptreg, "addxb",
- 0xf1f0, 0xd140, l1, ptreg, "addxw",
- 0xf1f0, 0xd180, l1, ptreg, "addxl",
- 0xf000, 0xd000, loone, pomode,"add",
- 0xf8c0, 0xe0c0, lonew, pmshf, 0,
- 0xf000, 0xe000, l1, pshf, 0,
- 0
- };
-
- char *areg[] = { "a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp"};
- char *cclist[] = { "hi", "ls", "cc", "cs", "ne", "eq", "vc", "vs",
- "pl", "mi", "ge", "lt", "gt", "le"};
-
- char *shtype[] = { "as", "ls", "rox", "ro" };
- char *bittyp[] = { "tst", "chg", "clr", "set" };
-
- char *creg[] = { "sfc", "dfc", "usp", "vbr" };
-
- /*
- * Length functions.
- */
-
- int l1()
- {
- return 1;
- }
-
- int l2()
- {
- return 2;
- }
-
- int el1(te)
- t_entry *te;
- {
- te->t_bchtyp = T_UNBR;
- return 1;
- }
-
- int lea(instr, size, pos)
- unsigned instr, size;
- long pos;
- {
- switch ((instr >> 3) & 0x7) {
- case 0:
- case 1:
- case 2:
- case 3:
- case 4:
- return 1;
- case 5:
- case 6:
- return 2;
- default:
- switch (instr & 0x7) {
- case 0:
- case 2:
- case 3:
- return 2;
- case 1:
- mkdref(pos, size);
- return 3;
- case 4:
- if (size > 2)
- return 3;
- return 2;
- default:
- return 0;
- }
- }
- }
-
- /*
- * Lengths of move instructions.
- */
-
- int lmove(te, pos)
- t_entry *te;
- long pos;
- {
- register unsigned tc = te->t_contents;
- unsigned sz = 1;
- int lng, lng2;
-
- lng = tc & 0xf000;
- if (lng == 0x3000)
- sz = 2;
- else if (lng == 0x2000)
- sz = 4;
-
- if ((lng = lea(tc, sz, pos+2)) <= 0)
- return 0;
- lng2 = lea(((tc>>3) & 0x38) | ((tc>>9) & 0x7), sz, pos+lng+lng);
- if (lng2 <= 0)
- return 0;
- return lng + lng2 - 1;
- }
-
- /*
- * Lengths for conditional branches and dbcc instructions.
- */
-
- int lcbch(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
- long dest = pos + 2;
- int res = 2;
-
- if ((tc & 0xf000) == 0x5000 || (tc & 0xff) == 0)
- dest += (short)gettw(&mainfile, pos+2, R_WORD);
- else {
- dest += (char) tc;
- res = 1;
- }
- if ((tc & 0xff00) == 0x6000)
- te->t_bchtyp = T_UNBR;
- else if ((tc & 0xff00) == 0x6100)
- te->t_bchtyp = T_JSR;
- else
- te->t_bchtyp = T_CONDBR;
-
- te->t_relsymb = textlab(dest, pos);
- return res;
- }
-
- int jj(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
- t_entry nextl;
-
- te->t_bchtyp = (tc & 0x40)? T_UNBR: T_JSR;
- if ((tc & 0x3f) == 0x39) {
- gette(&mainfile, pos+2, &nextl);
- if (nextl.t_relsymb == NULL) {
- nextl.t_relsymb = textlab(gettw(&mainfile, pos+2, R_LONG), pos);
- putte(&mainfile, pos+2, &nextl);
- }
- te->t_relsymb = nextl.t_relsymb; /* Easy ref */
- }
- return lea(tc, 4, pos+2);
- }
-
- int limed(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
- int lng;
-
- /*
- * Specifically exclude byte address register operands,
- * and ones which have lengths of 3.
- */
-
- if ((tc & 0xf8) == 0x08)
- return 0;
-
- if ((tc & 0xc0) >= 0x80) {
- if (tc & 0x40)
- return 0;
- lng = lea(tc, 4, pos+6);
- if (lng > 0)
- lng += 2;
- }
- else {
- lng = lea(tc, (unsigned)((tc & 0xc0)?2:1), pos+4);
- if (lng > 0)
- lng++;
- }
- return lng;
- }
-
- int lsbit(te, pos)
- t_entry *te;
- long pos;
- {
- int lng = lea(te->t_contents, 1, pos+4);
-
- if (lng > 0)
- lng++;
- return lng;
- }
-
- int lmvml(te, pos)
- t_entry *te;
- long pos;
- {
- int lng = lea(te->t_contents,
- (unsigned)(te->t_contents&0x40? 4:2), pos+4);
-
- if (lng > 0)
- lng++;
- return lng;
- }
-
- /*
- * Length depends on bits 6 and 7 of instruction.
- */
-
- int lone(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
-
- return lea(tc, 1 << ((tc >> 6) & 3), pos+2);
- }
-
- /*
- * Length depends on bits 6-8 of instruction.
- */
-
- int loone(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
-
- switch ((tc >> 6) & 7) {
- case 0:
- case 4:
- return lea(tc, 1, pos+2);
- case 1:
- case 3:
- case 5:
- return lea(tc, 2, pos+2);
- case 2:
- case 6:
- case 7:
- return lea(tc, 4, pos+2);
- }
- /*NOTREACHED*/
- }
-
- int lonew(te, pos)
- t_entry *te;
- long pos;
- {
- return lea(te->t_contents, 2, pos+2);
- }
-
- int lonel(te, pos)
- t_entry *te;
- long pos;
- {
- return lea(te->t_contents, 4, pos+2);
- }
-
- /*
- * Print routines.
- */
-
- int findleng(tc)
- unsigned tc;
- {
- switch ((tc >> 6) & 3) {
- case 0:
- return 'b';
- case 1:
- return 'w';
- default:
- return 'l';
- }
- }
-
- void piword(disp)
- unsigned disp;
- {
- int szc;
-
- (void) printf("@(0x%x,", disp & 0xff);
- if (disp & 0x8000)
- (void) printf("%s", areg[(disp >> 12) & 0x7]);
- else
- (void) printf("d%d", (disp >> 12) & 0x7);
- szc = 'w';
- if (disp & (1 << 10))
- szc = 'l';
- (void) printf(":%c)", szc);
- }
-
- void paddr(pos)
- long pos;
- {
- t_entry tent;
- symbol symb;
-
- gette(&mainfile, pos, &tent);
- if (tent.t_relsymb != NULL) {
- symb = tent.t_relsymb;
- if (symb->s_lsymb != 0)
- (void) printf("%u$", symb->s_lsymb);
- else
- (void) printf("%s", symb->s_name);
- if (tent.t_reldisp != 0)
- (void) printf("+0x%x", tent.t_reldisp);
- return;
- }
- (void) printf("0x%x", gettw(&mainfile, pos, R_LONG));
- }
-
- int prea(ea, pos, sz)
- unsigned ea, sz;
- long pos; /* Address of previous word to extn */
- {
- unsigned reg = ea & 0x7;
- long disp;
-
- pos += 2;
-
- switch ((ea >> 3) & 0x7) {
- case 0:
- (void) printf("d%d", reg);
- return 0;
- case 1:
- (void) printf("%s", areg[reg]);
- return 0;
- case 2:
- (void) printf("%s@", areg[reg]);
- return 0;
- case 3:
- (void) printf("%s@+", areg[reg]);
- return 0;
- case 4:
- (void) printf("%s@-", areg[reg]);
- return 0;
- case 5:
- disp = gettw(&mainfile, pos, R_WORD);
- (void) printf("%s@(0x%x)", areg[reg], disp);
- return 2;
- case 6:
- (void) printf("%s", areg[reg]);
- piword((unsigned) gettw(&mainfile, pos, R_WORD));
- return 2;
- default:
- switch (reg) {
- case 0:
- disp = gettw(&mainfile, pos, R_WORD);
- (void) printf("0x%x:w", disp);
- return 2;
- case 1:
- paddr(pos);
- return 4;
- case 2:
- disp = gettw(&mainfile, pos, R_WORD);
- (void) printf("pc@(0x%x)", disp);
- return 2;
- case 3:
- (void) printf("pc");
- piword((unsigned) gettw(&mainfile, pos, R_WORD));
- return 2;
- case 4:
- (void) printf("#");
- if (sz < 4)
- (void) printf("0x%x", gettw(&mainfile, pos, R_WORD));
- else
- paddr(pos);
- return sz;
- default:
- (void) fprintf(stderr, "Funny mode\n");
- exit(220);
- }
- }
- /*NOTREACHED*/
- }
-
- int pmove(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned sz = 2;
- unsigned tc = te->t_contents;
-
- (void) printf("mov%s\t", optab[te->t_iindex].prarg);
-
- if ((tc & 0xf000) == 0x2000)
- sz = 4;
-
- pos += prea(tc, pos, sz);
- putchar(',');
- (void) prea(((tc >> 9) & 0x7) | ((tc >> 3) & 0x38), pos, sz);
- }
-
- int pcbch(te)
- t_entry *te;
- {
- int cc = ((te->t_contents >> 8) & 0xf) - 2;
- char *msg;
- register symbol ts;
-
- if (cc < 0)
- msg = cc < -1? "ra": "sr";
- else
- msg = cclist[cc];
- (void) printf("b%s", msg);
- if (te->t_lng < 2)
- (void) printf("s");
- ts = te->t_relsymb;
- if (ts->s_lsymb != 0)
- (void) printf("\t%u$", ts->s_lsymb);
- else
- (void) printf("\t%s", ts->s_name);
- }
-
- int pdbcc(te)
- t_entry *te;
- {
- unsigned tc = te->t_contents;
- int cc = ((tc >> 8) & 0xf) - 2;
- char *msg;
- register symbol ts;
-
- if (cc < 0)
- msg = cc < -1? "t": "f";
- else
- msg = cclist[cc];
- ts = te->t_relsymb;
- (void) printf("db%s\td%d,", msg, tc & 0x7);
- if (ts->s_lsymb)
- (void) printf("%u$", ts->s_lsymb);
- else
- (void) printf("%s", ts->s_name);
- }
-
- int pscc(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
- int cc = ((tc >> 8) & 0xf) - 2;
- char *msg;
-
- if (cc < 0)
- msg = cc < -1? "t": "f";
- else
- msg = cclist[cc];
- (void) printf("s%s\t", msg);
- (void) prea(tc, pos, 1);
- }
-
- int pcs(te, pos)
- t_entry *te;
- long pos;
- {
- long disp = gettw(&mainfile, pos+2, R_WORD);
-
- (void) printf("%s", optab[te->t_iindex].prarg);
- if ((te->t_contents & 0xc0) == 0)
- (void) printf("b\t#0x%x,cc", disp);
- else
- (void) printf("w\t#0x%x,sr", disp);
- }
-
- int pmovc(te, pos)
- t_entry *te;
- long pos;
- {
- int disp = gettw(&mainfile, pos+2, R_WORD);
- int ctrl = ((disp >> 10) & 2) | (disp & 1);
-
- (void) printf("movec\t");
- if ((te->t_contents & 1) == 0)
- (void) printf("%s,", creg[ctrl]);
- if (disp & 0x8000)
- (void) printf("%s", areg[(disp >> 12) & 7]);
- else
- (void) printf("d%d", disp >> 12);
- if (te->t_contents & 1)
- (void) printf(",%s", creg[ctrl]);
- }
-
- int pimed(te, pos)
- t_entry *te;
- long pos;
- {
- int sz = findleng(te->t_contents);
-
- (void) printf("%s%c\t#", optab[te->t_iindex].prarg, sz);
- if (sz == 'l') {
- paddr(pos+2);
- putchar(',');
- (void) prea(te->t_contents, pos+4, 4);
- }
- else {
- (void) printf("0x%x,", gettw(&mainfile, pos+2, R_WORD));
- (void) prea(te->t_contents, pos+2, 2);
- }
- }
-
- int pmovp(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
- long disp = gettw(&mainfile, pos+2, R_WORD);
- int dreg = tc >> 9;
- char *ar = areg[tc & 0x7];
-
- (void) printf("movep");
- if (tc & (1 << 6))
- putchar('l');
- else
- putchar('w');
-
- if (tc & (1 << 7))
- (void) printf("\td%d,%s@(0x%x)", dreg, ar, disp);
- else
- (void) printf("\t%s@(0x%x),d%d", ar, disp, dreg);
- }
-
- int psbit(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
-
- (void) printf("b%s\t#%d,", bittyp[(tc >> 6) & 0x3], gettw(&mainfile, pos+2, R_WORD));
- (void) prea(tc, pos+2, 1);
- }
-
- /*ARGSUSED*/
- int pstop(te, pos)
- t_entry *te;
- long pos;
- {
- (void) printf("stop\t#0x%x", gettw(&mainfile, pos+2, R_WORD));
- }
-
- int pdbit(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
-
- (void) printf("b%s\td%d,", bittyp[(tc >> 6) & 0x3], (tc >> 9) & 0x7);
- (void) prea(tc, pos, 1);
- }
-
- int pcs2(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
-
- (void) printf("movw\t");
- if ((tc & 0xffc0) == 0x40c0) {
- (void) printf("sr,");
- (void) prea(tc, pos, 2);
- }
- else {
- (void) prea(tc, pos, 2);
- (void) printf(",%s", optab[te->t_iindex].prarg);
- }
- }
-
- int pone(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
- int sz = findleng(tc);
-
- (void) printf("%s%c\t", optab[te->t_iindex].prarg, sz);
- (void) prea(tc, pos, (unsigned)(sz == 'l'? 4: 2));
- }
-
- int ppea(te, pos) /* nbcd, pea, tas, jmp, jsr */
- t_entry *te;
- long pos;
- {
- (void) printf("%s\t", optab[te->t_iindex].prarg);
- (void) prea(te->t_contents, pos, (unsigned)(te->t_lng > 2? 4: 2));
- }
-
-
- int plea(te, pos)
- t_entry *te;
- long pos;
- {
- (void) printf("lea\t");
- (void) prea(te->t_contents, pos, 4);
- (void) printf(",%s", areg[(te->t_contents >> 9) & 0x7]);
- }
-
- int pdreg(te)
- t_entry *te;
- {
- (void) printf("%s\td%d", optab[te->t_iindex].prarg, te->t_contents & 7);
- }
-
-
- int pmvml(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
- register unsigned dw = gettw(&mainfile, pos+2, R_WORD);
- unsigned sz = 4;
- int sc = 'l';
- register int i;
- register unsigned bit;
-
- (void) printf("movem");
- if ((tc & 0x40) == 0) {
- sc = 'w';
- sz = 2;
- }
-
- (void) printf("%c\t", sc);
-
- if (tc & 0x400) {
- (void) prea(tc, pos+2, sz);
- (void) printf(",#0x%x", dw);
- }
- else {
- (void) printf("#0x%x,", dw);
- (void) prea(tc, pos+2, sz);
- }
-
- (void) printf("\t|");
-
- if ((tc & 0x38) == 0x20) {
- bit = 0x8000;
- for (i = 0; i < 8; i++) {
- if (dw & bit)
- (void) printf(" d%d", i);
- bit >>= 1;
- }
- for (i = 0; i < 8; i++) {
- if (dw & bit)
- (void) printf(" %s", areg[i]);
- bit >>= 1;
- }
- }
- else {
- bit = 1;
- for (i = 0; i < 8; i++) {
- if (dw & bit)
- (void) printf(" d%d", i);
- bit <<= 1;
- }
- for (i = 0; i < 8; i++) {
- if (dw & bit)
- (void) printf(" %s", areg[i]);
- bit <<= 1;
- }
- }
- }
-
- int ptrap(te)
- t_entry *te;
- {
- (void) printf("trap\t#0x%x", te->t_contents & 0xf);
- }
-
- int plink(te, pos)
- t_entry *te;
- long pos;
- {
- (void) printf("link\t%s,#0x%x", areg[te->t_contents & 0x7],
- gettw(&mainfile, pos+2, R_WORD));
- }
-
-
- int pareg(te)
- t_entry *te;
- {
- (void) printf(optab[te->t_iindex].prarg, areg[te->t_contents & 0x7]);
- }
-
- int podreg(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
-
- (void) printf("%s\t", optab[te->t_iindex].prarg);
- (void) prea(tc, pos, 2);
- (void) printf(",d%d", (tc >> 9) & 0x7);
- }
-
- int pqu(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
- int sz = findleng(tc);
- int amt = (tc >> 9) & 0x7;
-
- if (amt == 0)
- amt = 8;
- (void) printf("%sq%c\t#%d,", optab[te->t_iindex].prarg, sz, amt);
- (void) prea(tc, pos, (unsigned)(sz == 'l'? 4: 2));
- }
-
- int pmqu(te)
- t_entry *te;
- {
- unsigned tc = te->t_contents;
-
- (void) printf("moveq\t#0x%x,d%d", (char)tc, (tc >> 9) & 0x7);
- }
-
- int ptreg(te)
- t_entry *te;
- {
- register unsigned tc = te->t_contents;
- int rx = (tc >> 9) & 0x7;
- int ry = tc & 0x7;
-
- (void) printf("%s\t", optab[te->t_iindex].prarg);
- if (tc & 0x8)
- (void) printf("%s@-,%s@-", areg[ry], areg[rx]);
- else
- (void) printf("d%d,d%d", ry, rx);
- }
-
- int pcmpm(te)
- t_entry *te;
- {
- register unsigned tc = te->t_contents;
-
- (void) printf("%s\t%s@+,%s@+", optab[te->t_iindex].prarg,
- areg[tc & 7], areg[(tc >> 9) & 7]);
- }
-
- int pomode(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
- char bef[4], aft[4];
- int sz;
- int reg = (tc >> 9) & 7;
-
- bef[0] = aft[0] = '\0';
-
- switch ((tc >> 6) & 7) {
- case 0:
- sz = 'b';
- goto toreg;
- case 1:
- sz = 'w';
- goto toreg;
- case 2:
- sz = 'l';
- toreg:
- (void) sprintf(aft, ",d%d", reg);
- break;
- case 3:
- sz = 'w';
- goto toareg;
- case 7:
- sz = 'l';
- toareg:
- (void) sprintf(aft, ",%s", areg[reg]);
- break;
- case 4:
- sz = 'b';
- goto frreg;
- case 5:
- sz = 'w';
- goto frreg;
- case 6:
- sz = 'l';
- frreg:
- (void) sprintf(bef, "d%d,", reg);
- break;
- }
-
- (void) printf("%s%c\t%s", optab[te->t_iindex].prarg, sz, bef);
- (void) prea(tc, pos, (unsigned)(sz == 'l'? 4: 2));
- (void) printf(aft);
- }
-
- int pexg(te)
- t_entry *te;
- {
- unsigned tc = te->t_contents;
- int r1 = (tc >> 9) & 7, r2 = tc & 7;
-
- (void) printf("exg\t");
-
- if ((tc & 0x00f8) == 0x0048)
- (void) printf("%s,", areg[r1]);
- else
- (void) printf("d%d,", r1);
- if (tc & 0x8)
- (void) printf("%s", areg[r2]);
- else
- (void) printf("d%d", r2);
- }
-
- int pmshf(te, pos)
- t_entry *te;
- long pos;
- {
- unsigned tc = te->t_contents;
-
- (void) printf("%s%cw\t", shtype[(tc >> 9) & 3], tc & 0x100? 'l': 'r');
- (void) prea(tc, pos, 2);
- }
-
- int pshf(te)
- t_entry *te;
- {
- unsigned tc = te->t_contents;
- int sz = findleng(tc);
- int disp = (tc >> 9) & 7;
-
- (void) printf("%s%c%c\t", shtype[(tc >> 3) & 3], tc & 0x100? 'l': 'r', sz);
- if (tc & 0x20)
- (void) printf("d%d", disp);
- else
- (void) printf("#%d", disp == 0? 8: disp);
- (void) printf(",d%d", tc & 7);
- }
-
- /*
- * Find length etc of instruction.
- */
-
- int findinst(te, pos)
- register t_entry *te;
- long pos;
- {
- register struct opstr *op;
- unsigned tc = te->t_contents;
- int lng = 0;
- register int i;
-
- te->t_type = T_BEGIN;
- te->t_bchtyp = T_NOBR;
-
- for (op = &optab[0]; op->mask; op++) {
- if ((tc & op->mask) == op->match) {
- te->t_iindex = op - optab;
- lng = (op->opsize)(te, pos);
- break;
- }
- }
-
- for (i = 1; i < lng; i++) {
- t_entry ctent;
- long npos = pos+i+i;
-
- if (npos >= endt)
- goto clearem;
- gette(&mainfile, npos, &ctent);
- if (ctent.t_bdest || ctent.t_dref) {
- clearem: for (i--; i > 0; i--) {
- npos = pos + i + i;
- gette(&mainfile, npos, &ctent);
- ctent.t_type = T_UNKNOWN;
- putte(&mainfile, npos, &ctent);
- }
- lng = 0;
- goto ginv;
- }
- ctent.t_type = T_CONT;
- putte(&mainfile, npos, &ctent);
- }
-
- if (lng <= 0) {
- ginv: te->t_vins = 0;
- te->t_lng = 1;
- te->t_type = T_UNKNOWN;
- te->t_bchtype = T_NOBR;
- }
- else
- te->t_lng = lng;
- return lng;
- }
-
- /*
- * Print instruction.
- */
-
- void prinst(te, pos)
- t_entry *te;
- long pos;
- {
- putchar('\t');
- (optab[te->t_iindex].opprin)(te, pos);
- putchar('\n');
- }
- SHAR_EOF
- if test 19541 -ne "`wc -c < 'iset.c'`"
- then
- echo shar: error transmitting "'iset.c'" '(should have been 19541 characters)'
- fi
- fi
- echo shar: extracting "'libmtch.c'" '(7242 characters)'
- if test -f 'libmtch.c'
- then
- echo shar: will not over-write existing file "'libmtch.c'"
- else
- cat << \SHAR_EOF > 'libmtch.c'
- /*
- * SCCS: @(#)libmtch.c 1.2 11/2/84 14:18:55
- * Read library files.
- *
- ***********************************************************************
- * This software is copyright of
- *
- * John M Collins
- * 47 Cedarwood Drive
- * St Albans
- * Herts, AL4 0DN
- * England +44 727 57267
- *
- * and is released into the public domain on the following conditions:
- *
- * 1. No free maintenance will be guaranteed.
- * 2. Nothing may be based on this software without
- * acknowledgement, including incorporation of this
- * notice.
- *
- * Notwithstanding the above, the author welcomes correspondence and bug
- * fixes.
- ***********************************************************************
- */
-
- #include <stdio.h>
- #include <fcntl.h>
- #include <a.out.h>
- #include <ar.h>
- #include <setjmp.h>
- #include "unc.h"
-
- long lseek();
- void bfopen(), bfclose(), nomem();
- void rrell2(), markmatch();
- char *strchr(), *strrchr(), *strncpy(), *strcat(), *strcpy(), *malloc();
- int matchup();
- long findstart();
-
- char verbose; /* Tell the world what we are doing */
- char *tfnam;
- char *cfile;
- ef_fids mainfile;
- struct commit dreltab;
- int donedrel, donebrel;
- long trelpos, drelpos, brelpos;
- static struct libit currlib = {-1, 0, -1, ""};
-
- void lclash(str)
- char *str;
- {
- (void) fprintf(stderr, "Library scan failure - %s\n", str);
- (void) fprintf(stderr, "Searching %s\n", cfile);
- if (currlib.lf_name[0])
- (void) fprintf(stderr, "Member is %s\n", currlib.lf_name);
- exit(255);
- }
-
- /*
- * Find next member.
- */
-
- long nextmemb(lfd)
- register struct libit *lfd;
- {
- struct ar_hdr arbuf;
-
- if (lfd->lf_next < 0)
- return -1;
-
- (void) lseek(lfd->lf_fd, lfd->lf_next, 0);
- if (read(lfd->lf_fd, (char *)&arbuf, sizeof(arbuf)) != sizeof(arbuf)) {
- lfd->lf_next = -1;
- return -1;
- }
- (void) strncpy(lfd->lf_name, arbuf.ar_name, sizeof(lfd->lf_name));
- lfd->lf_offset = lfd->lf_next + sizeof(arbuf);
- lfd->lf_next = (lfd->lf_offset + arbuf.ar_size + 1) & ~1;
- return lfd->lf_offset;
- }
-
- /*
- * Decode a file name thus -
- *
- * -lxxx decode as /lib/libxxx.a /usr/lib/libxxx.a etc
- * -Lxxx forget "lib" ".a" bit thus -Lcrt0.o
- * or read LDPATH environment var to give list of directories as sh
- * (default /lib:/usr/lib).
- *
- * Alternatively treat as normal pathname.
- *
- * File names may be followed by (membername) if the file is an archive,
- * thus
- *
- * -lc(printf.o)
- *
- * in which case the specified module is fetched.
- */
-
- struct libit *getfnam(str)
- char *str;
- {
- char *bp, *ep = NULL, *pathb, *pathe, *fullpath = NULL;
- static char *pathn;
- extern char *getenv();
- long magic;
- struct ar_hdr arhdr;
- int fd;
-
- if ((bp = strrchr(str, '(')) != NULL &&
- (ep = strrchr(str, ')')) != NULL)
- *ep = *bp = '\0';
-
- if (str[0] == '-' && (str[1] == 'l' || str[1] == 'L')) {
- if (pathn == NULL) {
- if ((pathn = getenv("LDPATH")) == NULL)
- pathn = "/lib:/usr/lib";
- }
- fullpath = malloc((unsigned)(strlen(pathn) + strlen(str) + 1));
- if (fullpath == NULL)
- nomem();
- pathb = pathn;
- do {
- pathe = strchr(pathb, ':');
- if (*pathb == ':')
- fullpath[0] = '\0';
- else {
- if (pathe != NULL)
- *pathe = '\0';
- (void) strcpy(fullpath, pathb);
- (void) strcat(fullpath, "/");
- if (pathe != NULL)
- *pathe = ':';
- }
- if (str[1] == 'l')
- (void) strcat(fullpath, "lib");
- (void) strcat(fullpath, &str[2]);
- if (str[1] == 'l')
- (void) strcat(fullpath, ".a");
- if ((fd = open(fullpath, O_RDONLY)) >= 0)
- goto found;
- pathb = pathe + 1;
- } while (pathe != NULL);
-
- (void) fprintf(stderr, "Unable to locate lib%s.a in %s\n",
- &str[2], pathn);
- exit(101);
- }
- else if ((fd = open(str, O_RDONLY)) < 0) {
- (void) fprintf(stderr, "Cannot open %s\n", str);
- exit(102);
- }
-
- found:
-
- if ((read(fd, (char *) &magic, sizeof(magic)) != sizeof(magic) ||
- magic != ARMAG)) {
- if (ep != NULL) {
- (void) fprintf(stderr, "%s is not library file\n",
- fullpath != NULL? fullpath: str);
- exit(103);
- }
- if (fullpath != NULL)
- free(fullpath);
- currlib.lf_fd = fd;
- currlib.lf_offset = 0;
- currlib.lf_next = -1;
- currlib.lf_name[0] = '\0';
- return &currlib;
- }
-
- /*
- * It appears to be a library file - see if we want a specific
- * one.
- */
-
- if (ep != NULL) {
- currlib.lf_offset = sizeof(magic) + sizeof(struct ar_hdr);
- for (;;) {
- if (read(fd, &arhdr, sizeof(arhdr)) != sizeof(arhdr)) {
- (void) fprintf(stderr, "Cannot find member %s in %s\n",
- bp+1, fullpath?fullpath: str);
- exit(103);
- }
- if (strncmp(bp+1, arhdr.ar_name, sizeof(arhdr.ar_name)) == 0)
- break;
- currlib.lf_offset += arhdr.ar_size + sizeof(arhdr) + 1;
- currlib.lf_offset &= ~ 1;
- (void) lseek(fd, (long)(currlib.lf_offset - sizeof(arhdr)), 0);
- }
- if (fullpath != NULL)
- free(fullpath);
- currlib.lf_fd = fd;
- currlib.lf_next = -1;
- currlib.lf_name[0] = '\0';
- *bp = '(';
- *ep = ')';
- return &currlib;
- }
-
- /*
- * Otherwise point to 1st member in library.
- */
-
- if (read(fd, &arhdr, sizeof(arhdr)) != sizeof(arhdr)) {
- (void) fprintf(stderr, "Library %s empty\n", fullpath? fullpath: str);
- exit(104);
- }
- if (fullpath != NULL)
- free(fullpath);
- currlib.lf_offset = sizeof(magic) + sizeof(arhdr);
- currlib.lf_next = currlib.lf_offset + arhdr.ar_size + 1;
- currlib.lf_next &= ~1;
- currlib.lf_fd = fd;
- (void) strncpy(currlib.lf_name, arhdr.ar_name, sizeof(currlib.lf_name));
- return &currlib;
- }
-
- /*
- * Process library files.
- */
-
- #define MINTEXT 6
-
- void lscan(nfiles, fnames)
- int nfiles;
- char **fnames;
- {
- ef_fids libfile;
- register ef_fid ll = &libfile;
- register struct libit *clf;
- extern symbol dolsymb();
- int firstfile;
-
- for (; nfiles > 0; fnames++, nfiles--) {
- clf = getfnam(*fnames);
- cfile = *fnames;
- firstfile = 1;
- do {
- bfopen(tfnam, ll);
-
- /*
- * If file is garbled, silently forget it and go
- * on to the next one.
- */
-
- if (!rtext(clf->lf_fd, clf->lf_offset, ll))
- goto closeit;
-
- if (ll->ef_tsize < MINTEXT)
- goto closeit;
-
- if (!rdata(clf->lf_fd, clf->lf_offset, ll))
- goto closeit;
-
- if (rrell1(clf->lf_fd, clf->lf_offset, ll) < 0)
- goto closeit;
-
- /*
- * If first file in library, find it from
- * beginning of main file.
- */
-
- if (firstfile) {
- if ((trelpos = findstart(&mainfile, ll)) < 0)
- goto closeit;
- firstfile = 0;
- }
- else if (!matchup(&mainfile, ll, trelpos))
- goto closeit;
-
- /*
- * Found a match.
- */
-
- if (!rsymb(clf->lf_fd, clf->lf_offset, dolsymb, ll)) {
- (void) fprintf(stderr, "Corrupt file %s\n",
- *fnames);
- exit(150);
- }
-
- donedrel = 0;
- donebrel = 0;
- rrell2(clf->lf_fd, clf->lf_offset, ll);
- if (verbose) {
- (void) fprintf(stderr, "Found: ");
- if (clf->lf_name[0])
- (void) fprintf(stderr, "%.14s in ",
- clf->lf_name);
- (void) fprintf(stderr, "%s\n", *fnames);
- }
- if (libfile.ef_stvec != NULL) {
- free(libfile.ef_stvec);
- libfile.ef_stvec = NULL;
- libfile.ef_stcnt = 0;
- }
- dreltab.c_int = 0;
-
- /*
- * Start looking next time round
- * where last one left off.
- */
-
- markmatch(&mainfile, ll, trelpos);
- trelpos += libfile.ef_tsize;
- closeit:
- bfclose(ll);
- } while (nextmemb(clf) >= 0);
- }
- }
- SHAR_EOF
- if test 7242 -ne "`wc -c < 'libmtch.c'`"
- then
- echo shar: error transmitting "'libmtch.c'" '(should have been 7242 characters)'
- fi
- fi
- echo shar: extracting "'main.c'" '(6255 characters)'
- if test -f 'main.c'
- then
- echo shar: will not over-write existing file "'main.c'"
- else
- cat << \SHAR_EOF > 'main.c'
- /*
- * SCCS: @(#)main.c 1.2 11/2/84 14:19:31
- * Main routine etc.
- *
- ***********************************************************************
- * This software is copyright of
- *
- * John M Collins
- * 47 Cedarwood Drive
- * St Albans
- * Herts, AL4 0DN
- * England +44 727 57267
- *
- * and is released into the public domain on the following conditions:
- *
- * 1. No free maintenance will be guaranteed.
- * 2. Nothing may be based on this software without
- * acknowledgement, including incorporation of this
- * notice.
- *
- * Notwithstanding the above, the author welcomes correspondence and bug
- * fixes.
- ***********************************************************************
- */
-
- #include <stdio.h>
- #include <fcntl.h>
- #include <a.out.h>
- #include <sys/var.h>
- #include "unc.h"
-
- #define LINELNG 70
-
- void inturdat(), intutext(), intudat(), intlsym();
- void ptext(), pdata(), pabs(), pbss(), lscan();
-
- ef_fids mainfile;
-
- int par_entry, par_round; /* 68000 parameters */
- int nmods; /* Number of modules it looks like */
-
- char *tfnam = "split";
-
- char lsyms; /* Generate local symbols */
- char verbose; /* Tell the world what we are doing */
- char noabs; /* No non-global absolutes */
- int rel; /* File being analysed is relocatable */
- int lpos;
-
- symbol dosymb();
- struct libit *getfnam();
-
- /*
- * Get hex characters, also allowing for 'k' and 'm'.
- */
-
- int ghex(str)
- register char *str;
- {
- register int result = 0;
- register int lt;
-
- for (;;) {
- lt = *str++;
- switch (lt) {
- default:
- err: (void) fprintf(stderr, "Invalid hex digit \'%c\'\n", lt);
- exit(1);
-
- case '\0':
- return result;
-
- case '0':case '1':case '2':case '3':case '4':
- case '5':case '6':case '7':case '8':case '9':
- result = (result << 4) + lt - '0';
- continue;
-
- case 'a':case 'b':case 'c':case 'd':case 'e':case 'f':
- result = (result << 4) + lt - 'a' + 10;
- continue;
-
- case 'A':case 'B':case 'C':case 'D':case 'E':case 'F':
- result = (result << 4) + lt - 'A' + 10;
- continue;
-
- case 'k':case 'K':
- if (*str != '\0')
- goto err;
- return result << 10;
-
- case 'm':case 'M':
- if (*str != '\0')
- goto err;
- return result << 20;
- }
- }
- }
-
- /*
- * Process entry line options. Return number dealt with.
- */
-
- int doopts(av)
- char *av[];
- {
- register int cnt = 0, lt;
- register char *arg;
- struct var vs;
-
- uvar(&vs);
- par_entry = vs.v_ustart;
- par_round = vs.v_txtrnd - 1;
-
- for (;;) {
- arg = *++av;
- if (*arg++ != '-')
- return cnt;
- cnt++;
-
- nx: switch (lt = *arg++) {
- default:
- (void) fprintf(stderr, "Bad option -%c\n", lt);
- exit(1);
-
- case '\0':
- continue;
-
- case 'l': /* A file name */
- case 'L':
- return cnt - 1;
-
- case 's':
- lsyms++;
- goto nx;
-
- case 'v':
- verbose++;
- goto nx;
-
- case 'a':
- noabs++;
- goto nx;
-
- case 'R':
- case 'N':
- if (*arg == '\0') {
- cnt++;
- arg = *++av;
- if (arg == NULL) {
- bo: (void) fprintf(stderr,"Bad -%c option\n",lt);
- exit(1);
- }
- }
- if (lt == 'R')
- par_entry = ghex(arg);
- else
- par_round = ghex(arg) - 1;
- continue;
-
- case 't':
- if (*arg == '\0') {
- cnt++;
- arg = *++av;
- if (arg == NULL)
- goto bo;
- }
- tfnam = arg;
- continue;
-
- case 'o':
- if (*arg == '\0') {
- cnt++;
- arg = *++av;
- if (arg == NULL)
- goto bo;
- }
- if (freopen(arg, "w", stdout) == NULL) {
- (void) fprintf(stderr, "Help! cant open %s\n", arg);
- exit(20);
- }
- continue;
- }
- }
- }
-
- /*
- * Open binary files. Arrange to erase them when finished.
- */
-
- void bfopen(nam, fid)
- char *nam;
- ef_fid fid;
- {
- char fnam[80];
-
- (void) sprintf(fnam, "%s.tx", nam);
- if ((fid->ef_t = open(fnam, O_RDWR|O_CREAT, 0666)) < 0) {
- efil: (void) fprintf(stderr, "Help could not open %s\n", fnam);
- exit(4);
- }
- (void) unlink(fnam);
- (void) sprintf(fnam, "%s.dt", nam);
- if ((fid->ef_d = open(fnam, O_RDWR|O_CREAT, 0666)) < 0)
- goto efil;
- (void) unlink(fnam);
- }
-
- /*
- * Close binary files. They should get zapped anyway.
- */
-
- void bfclose(fid)
- ef_fid fid;
- {
- (void) close(fid->ef_t);
- (void) close(fid->ef_d);
- }
-
- /*
- * Main routine.
- */
-
- main(argc, argv)
- int argc;
- char *argv[];
- {
- int i;
- char *progname = argv[0];
- char *msg;
- register struct libit *lfd;
-
- i = doopts(argv);
- argc -= i;
- argv += i;
-
- if (argc < 2) {
- (void) fprintf(stderr, "Usage: %s [ options ] file\n", progname);
- exit(1);
- }
-
- lfd = getfnam(argv[1]);
- if (lfd->lf_next > 0) {
- (void) fprintf(stderr, "Main file (%s) cannot be library\n", argv[1]);
- exit(2);
- }
-
- bfopen(tfnam, &mainfile);
- if (verbose)
- (void) fprintf(stderr, "Scanning text\n");
- if (!rtext(lfd->lf_fd, lfd->lf_offset, &mainfile)) {
- msg = "text";
- bf: (void) fprintf(stderr, "Bad format input file - reading %s\n", msg);
- exit(5);
- }
- if (verbose)
- (void) fprintf(stderr, "Scanning data\n");
- if (!rdata(lfd->lf_fd, lfd->lf_offset, &mainfile)) {
- msg = "data";
- goto bf;
- }
- if (verbose)
- (void) fprintf(stderr, "Scanning symbols\n");
- if (!rsymb(lfd->lf_fd, lfd->lf_offset, dosymb, &mainfile)) {
- msg = "symbols";
- goto bf;
- }
- if (verbose)
- (void) fprintf(stderr, "Scanning for relocation\n");
- if ((rel = rrel(lfd->lf_fd, lfd->lf_offset, &mainfile)) < 0) {
- msg = "reloc";
- goto bf;
- }
-
- if (rel) {
- if (verbose)
- (void) fprintf(stderr, "File is relocatable\n");
- if (argc > 2)
- (void) fprintf(stderr, "Sorry - no scan on reloc files\n");
- }
- else
- lscan(argc - 2, &argv[2]);
-
- if (verbose)
- (void) fprintf(stderr, "End of input\n");
-
- (void) close(lfd->lf_fd);
- if (nmods > 0)
- (void) fprintf(stderr, "Warning: at least %d merged modules\n",
- nmods + 1);
-
- if (mainfile.ef_stvec != NULL) {
- free(mainfile.ef_stvec);
- mainfile.ef_stvec = NULL;
- mainfile.ef_stcnt = 0;
- }
-
- if (verbose)
- (void) fprintf(stderr, "Text anal 1\n");
- intutext();
- if (verbose)
- (void) fprintf(stderr, "Data anal 1\n");
- intudat(&mainfile);
- if (!rel) {
- if (verbose)
- (void) fprintf(stderr, "Data anal 2\n");
- inturdat(&mainfile);
- }
- if (lsyms) {
- if (verbose)
- (void) fprintf(stderr, "Local symbol scan\n");
- intlsym();
- }
- pabs();
- ptext(&mainfile);
- pdata(&mainfile);
- pbss(&mainfile);
- bfclose(&mainfile);
- exit(0);
- }
- SHAR_EOF
- if test 6255 -ne "`wc -c < 'main.c'`"
- then
- echo shar: error transmitting "'main.c'" '(should have been 6255 characters)'
- fi
- fi
- echo shar: extracting "'prin.c'" '(5480 characters)'
- if test -f 'prin.c'
- then
- echo shar: will not over-write existing file "'prin.c'"
- else
- cat << \SHAR_EOF > 'prin.c'
- /*
- * SCCS: @(#)prin.c 1.2 11/2/84 14:19:47
- * Print stuff.
- *
- ***********************************************************************
- * This software is copyright of
- *
- * John M Collins
- * 47 Cedarwood Drive
- * St Albans
- * Herts, AL4 0DN
- * England +44 727 57267
- *
- * and is released into the public domain on the following conditions:
- *
- * 1. No free maintenance will be guaranteed.
- * 2. Nothing may be based on this software without
- * acknowledgement, including incorporation of this
- * notice.
- *
- * Notwithstanding the above, the author welcomes correspondence and bug
- * fixes.
- ***********************************************************************
- */
-
- #include <stdio.h>
- #include <a.out.h>
- #include "unc.h"
-
- #define LINELNG 70
-
- void gette(), getde();
- long gettw(), getdw();
- void prinst();
-
- char noabs; /* No non-global absolutes */
- int rel; /* File being analysed is relocatable */
- int lpos;
-
- struct commit abstab, comtab;
-
- /*
- * Print absolute and common values.
- */
-
- void pabs()
- {
- register int i;
- register symbol cs;
-
- for (i = 0; i < abstab.c_int; i++)
-
- for (i = 0; i < abstab.c_int; i++) {
- cs = abstab.c_symb[i];
- if (cs->s_glob)
- (void) printf("\t.globl\t%s\n", cs->s_name);
- else if (noabs)
- continue;
- (void) printf("%s\t=\t0x%lx\n", cs->s_name, cs->s_value);
- }
- for (i = 0; i < comtab.c_int; i++) {
- cs = comtab.c_symb[i];
- (void) printf("\t.comm\t%s,%d\n", cs->s_name, cs->s_value);
- }
- }
-
- /*
- * Print out labels.
- */
-
- void plabs(ls, seg)
- register symbol ls;
- int seg;
- {
- for (; ls != NULL; ls = ls->s_link) {
- if (ls->s_type != seg)
- continue;
- if (ls->s_lsymb) {
- (void) printf("%u$:\n", ls->s_lsymb);
- return; /* Set last */
- }
- if (ls->s_glob)
- (void) printf("\n\t.globl\t%s", ls->s_name);
- (void) printf("\n%s:\n", ls->s_name);
- }
- }
-
- /*
- * Print out text.
- */
-
- void ptext(fid)
- register ef_fid fid;
- {
- register long tpos, endt;
- t_entry tstr;
-
- (void) printf(".text\n");
-
- tpos = fid->ef_tbase;
- endt = tpos + fid->ef_tsize;
- contin:
- for (; tpos < endt; tpos += tstr.t_lng * 2) {
- gette(fid, tpos, &tstr);
- plabs(tstr.t_lab, TEXT);
- if (tstr.t_type == T_BEGIN)
- prinst(&tstr, tpos);
- else if (tstr.t_relsymb != NULL) {
- (void) printf("\t.long\t%s", tstr.t_relsymb->s_name);
- if (tstr.t_relsymb->s_type!=TEXT &&
- tstr.t_relsymb->s_type!=DATA)
- (void) printf("+0x%x", gettw(fid, tpos, R_LONG));
- putchar('\n');
- tpos += 4;
- goto contin;
- }
- else
- (void) printf("\t.word\t0x%x\n", tstr.t_contents);
- }
-
- /*
- * Print out any trailing label.
- */
-
- gette(fid, tpos, &tstr);
- plabs(tstr.t_lab, TEXT);
- }
-
- /*
- * Print out data.
- */
-
- void pdata(fid)
- register ef_fid fid;
- {
- register long dpos, endd;
- register int lng;
- unsigned ctyp;
- int had, par, inc;
- char *msg;
- d_entry dstr;
-
- (void) printf("\n.data\n");
-
- dpos = fid->ef_dbase;
- endd = dpos + fid->ef_dsize;
-
- while (dpos < endd) {
-
- getde(fid, dpos, &dstr);
- plabs(dstr.d_lab, DATA);
-
- switch (dstr.d_type) {
- case D_CONT:
- (void) fprintf(stderr, "Data sync error\n");
- exit(200);
-
- case D_ASC:
- case D_ASCZ:
- ctyp = dstr.d_type;
- lng = dstr.d_lng;
- (void) printf("\t.asci");
- if (ctyp == D_ASC)
- (void) printf("i\t\"");
- else {
- (void) printf("z\t\"");
- lng--;
- }
-
- while (lng > 0) {
- getde(fid, dpos, &dstr);
- switch (dstr.d_contents) {
- default:
- if (dstr.d_contents < ' ' ||
- dstr.d_contents > '~')
- (void) printf("\\%.3o", dstr.d_contents);
- else
- putchar(dstr.d_contents);
- break;
- case '\"':
- case '\'':
- case '\\':
- case '|':
- (void) printf("\\%c", dstr.d_contents);
- break;
- case '\b':
- (void) printf("\\b");
- break;
- case '\n':
- (void) printf("\\n");
- break;
- case '\r':
- (void) printf("\\r");
- break;
- }
-
- lng--;
- dpos++;
- }
- (void) printf("\"\n");
- if (ctyp == D_ASCZ)
- dpos++;
- break;
-
- case D_BYTE:
- msg = "byte";
- par = R_BYTE;
- inc = 1;
- goto wrest;
-
- case D_WORD:
- msg = "word";
- par = R_WORD;
- inc = 2;
- goto wrest;
-
- case D_LONG:
- msg = "long";
- par = R_LONG;
- inc = 4;
- wrest:
- (void) printf("\t.%s\t", msg);
- lng = dstr.d_lng;
- lpos = 16;
- had = 0;
- while (lng > 0) {
- if (lpos > LINELNG) {
- (void) printf("\n\t.%s\t", msg);
- lpos = 16;
- }
- else if (had)
- lpos += printf(", ");
-
- lpos += printf("0x%x", getdw(fid, dpos, par));
- lng -= inc;
- dpos += inc;
- had++;
- }
- putchar('\n');
- break;
-
- case D_ADDR:
- (void) printf("\t.long\t");
- lng = dstr.d_lng;
- lpos = 16;
- had = 0;
- while (lng > 0) {
- if (lpos > LINELNG) {
- (void) printf("\n\t.long\t");
- lpos = 16;
- }
- else if (had)
- lpos += printf(", ");
-
- getde(fid, dpos, &dstr);
- lpos += printf("%s", dstr.d_relsymb->s_name);
- lng -= sizeof(long);
- dpos += sizeof(long);
- had++;
- }
- putchar('\n');
- break;
- }
- }
-
- /*
- * Print trailing label.
- */
-
- getde(fid, dpos, &dstr);
- plabs(dstr.d_lab, DATA);
- }
-
- void pbss(fid)
- register ef_fid fid;
- {
- register long bpos = fid->ef_bbase;
- long endb = fid->ef_end;
- d_entry bstr;
-
- (void) printf("\n.bss\n");
-
- while (bpos < endb) {
- getde(fid, bpos, &bstr);
- plabs(bstr.d_lab, BSS);
- (void) printf("\t.space\t%d\n", bstr.d_lng);
- bpos += bstr.d_lng;
- }
-
- getde(fid, endb, &bstr);
- plabs(bstr.d_lab, BSS);
- }
- SHAR_EOF
- if test 5480 -ne "`wc -c < 'prin.c'`"
- then
- echo shar: error transmitting "'prin.c'" '(should have been 5480 characters)'
- fi
- fi
- echo shar: extracting "'robj.c'" '(18429 characters)'
- if test -f 'robj.c'
- then
- echo shar: will not over-write existing file "'robj.c'"
- else
- cat << \SHAR_EOF > 'robj.c'
- /*
- * SCCS: @(#)robj.c 1.2 11/2/84 14:19:59
- * Read object files.
- *
- ***********************************************************************
- * This software is copyright of
- *
- * John M Collins
- * 47 Cedarwood Drive
- * St Albans
- * Herts, AL4 0DN
- * England +44 727 57267
- *
- * and is released into the public domain on the following conditions:
- *
- * 1. No free maintenance will be guaranteed.
- * 2. Nothing may be based on this software without
- * acknowledgement, including incorporation of this
- * notice.
- *
- * Notwithstanding the above, the author welcomes correspondence and bug
- * fixes.
- ***********************************************************************
- *
- * This particular module will obviously have to be munged beyond
- * recognition for another object format.
- */
-
- #include <stdio.h>
- #include <a.out.h>
- #include "unc.h"
-
- void gette(), getde(), setde(), putte(), putde();
- long gettw(), getdw();
- void reallst(), lclash(), nomem(), unimpl();
- void addit();
- char *malloc();
- long lseek();
-
- int par_entry, par_round, nmods, donedrel, donebrel;
- struct commit abstab, comtab, dreltab;
- long trelpos, drelpos, brelpos;
-
- ef_fids mainfile;
-
- symbol lookup(), inventsymb(), getnsymb();
-
- #define DBSIZE 100
- #define STINIT 20
-
- /*
- * Read text segment. Return 0 if not ok.
- */
-
- int rtext(inf, offset, outf)
- int inf; /* a.out file (possibly in library) */
- long offset; /* Offset from start of inf of a.out file */
- ef_fid outf; /* Output file descriptor */
- {
- t_entry tstr;
- struct bhdr filhdr;
- register long size;
- register int i, l;
- unsigned short inbuf[DBSIZE/2];
-
- /*
- * Initialise fields in structure.
- */
-
- tstr.t_type = T_UNKNOWN;
- tstr.t_vins = 1; /* For the moment */
- tstr.t_bdest = 0;
- tstr.t_gbdest = 0;
- tstr.t_lng = 1;
- tstr.t_reloc = R_NONE;
- tstr.t_rdisp = 0;
- tstr.t_isrel = 0;
- tstr.t_amap = 0;
- tstr.t_dref = 0;
- tstr.t_relsymb = NULL;
- tstr.t_reldisp = 0;
- tstr.t_lab = NULL;
- tstr.t_lsymb = 0;
- tstr.t_refhi = 0;
- tstr.t_reflo = 0x7fffffff;
- tstr.t_match = 0;
-
- /*
- * Read a.out header.
- */
-
- (void) lseek(inf, offset, 0);
-
- if (read(inf, (char *)&filhdr, sizeof(filhdr)) != sizeof(filhdr))
- return 0;
-
- if (filhdr.fmagic != FMAGIC && filhdr.fmagic != NMAGIC)
- return 0;
-
- /*
- * Warn user if entry point does not tie up.
- */
-
- if (filhdr.entry != par_entry)
- (void) fprintf(stderr, "Warning: File has -R%X\n", filhdr.entry);
-
- outf->ef_entry = filhdr.entry;
- outf->ef_tbase = filhdr.entry;
- outf->ef_dbase = filhdr.tsize + filhdr.entry;
-
- if (filhdr.fmagic == NMAGIC)
- outf->ef_dbase = (outf->ef_dbase + par_round) & (~par_round);
-
- outf->ef_bbase = outf->ef_dbase + filhdr.dsize;
- outf->ef_end = outf->ef_bbase + filhdr.bsize;
-
- outf->ef_tsize = filhdr.tsize;
- outf->ef_dsize = filhdr.dsize;
- outf->ef_bsize = filhdr.bsize;
-
- (void) lseek(inf, offset + TEXTPOS, 0);
-
- size = outf->ef_tsize;
-
- while (size > 1) {
- l = size > DBSIZE? DBSIZE: size;
- if (read(inf, (char *)inbuf, l) != l)
- return 0;
- l /= 2;
- for (i = 0; i < l; i++) {
- tstr.t_contents = inbuf[i];
- (void) write(outf->ef_t, (char *)&tstr, sizeof(tstr));
- }
- size -= l + l;
- }
-
- /*
- * Extra one to cope with "etext".
- */
-
- (void) write(outf->ef_t, (char *)&tstr, sizeof(tstr));
- return 1;
- }
-
- /*
- * Same sort of thing for the data segment.
- */
-
- int rdata(inf, offset, outf)
- int inf; /* a.out file (possibly in library) */
- long offset; /* Offset from start of inf of a.out file */
- ef_fid outf; /* Output file descriptor */
- {
- d_entry dstr;
- struct bhdr filhdr;
- register long size;
- register int i, l;
- unsigned char inbuf[DBSIZE];
-
- /*
- * Initialise fields in structure.
- */
-
- dstr.d_type = D_BYTE;
- dstr.d_reloc = R_NONE;
- dstr.d_lng = 1;
- dstr.d_relsymb = NULL;
- dstr.d_reldisp = 0;
- dstr.d_lab = NULL;
-
- /*
- * Read a.out header.
- */
-
- (void) lseek(inf, offset, 0);
-
- if (read(inf, (char *)&filhdr, sizeof(filhdr)) != sizeof(filhdr))
- return 0;
-
- (void) lseek(inf, offset + DATAPOS, 0);
-
- size = outf->ef_dsize;
-
- while (size > 0) {
- l = size > DBSIZE? DBSIZE: size;
- if (read(inf, (char *)inbuf, l) != l)
- return 0;
- for (i = 0; i < l; i++) {
- dstr.d_contents = inbuf[i];
- (void) write(outf->ef_d, (char *)&dstr, sizeof(dstr));
- }
- size -= l;
- }
-
- /*
- * Repeat for BSS segment.
- */
-
- dstr.d_contents = 0;
- for (size = outf->ef_bsize; size > 0; size--)
- (void) write(outf->ef_d, (char *)&dstr, sizeof(dstr));
-
- /*
- * Extra one to cope with "end".
- */
-
- (void) write(outf->ef_d, (char *)&dstr, sizeof(dstr));
- return 1;
- }
-
- /*
- * Process symbol table segment.
- */
-
- int rsymb(inf, offset, dproc, outf)
- int inf; /* a.out file (possibly in library) */
- long offset; /* Offset from start of inf of a.out file */
- symbol (*dproc)();
- register ef_fid outf; /* Output file descriptor */
- {
- register symbol csym;
- struct bhdr filhdr;
- struct sym isym;
- register long size;
- register int i, l;
- char inbuf[SYMLENGTH+1];
-
- /*
- * Read a.out header.
- */
-
- (void) lseek(inf, offset, 0);
-
- if (read(inf, (char *)&filhdr, sizeof(filhdr)) != sizeof(filhdr))
- return 0;
-
- offset += SYMPOS;
- size = filhdr.ssize;
- if (size <= 0)
- return 1;
-
- /*
- * Guesstimate symbol table vector size.
- */
-
- l = size / (sizeof(struct sym) + 4);
- if (l <= 0)
- l = STINIT;
-
- outf->ef_stvec = (symbol *) malloc(l * sizeof(symbol));
- if (outf->ef_stvec == NULL)
- nomem();
-
- outf->ef_stcnt = 0;
- outf->ef_stmax = l;
-
- while (size > sizeof(struct sym)) {
- (void) lseek(inf, offset, 0);
- if (read(inf, (char *)&isym, sizeof(isym)) != sizeof(isym))
- return 0;
- size -= sizeof(isym);
- l = SYMLENGTH;
- if (l > size)
- l = size;
- if (read(inf, inbuf, l) != l)
- return 0;
- inbuf[l] = '\0';
- for (i = 0; inbuf[i] != '\0'; i++)
- ;
- size -= i + 1;
- offset += sizeof(isym) + i + 1;
- csym = (*dproc)(lookup(inbuf), isym.stype, isym.svalue, outf);
- if (outf->ef_stcnt >= outf->ef_stmax)
- reallst(outf);
- outf->ef_stvec[outf->ef_stcnt++] = csym;
- }
- return 1;
- }
-
- /*
- * Process relocation stuff. -1 error, 0 no relocation, 1 relocation.
- */
-
- int rrel(inf, offset, outf)
- int inf; /* a.out file (possibly in library) */
- long offset; /* Offset from start of inf of a.out file */
- ef_fid outf; /* Output file descriptor */
- {
- struct bhdr filhdr;
- struct reloc crel;
- t_entry tstr;
- d_entry dstr;
- register long size;
- long cont, pos;
-
- /*
- * Read a.out header.
- */
-
- (void) lseek(inf, offset, 0);
-
- if (read(inf, (char *)&filhdr, sizeof(filhdr)) != sizeof(filhdr))
- return -1;
- if (filhdr.rtsize <= 0 && filhdr.rdsize <= 0)
- return 0;
-
- size = filhdr.rtsize;
-
- (void) lseek(inf, RTEXTPOS + offset, 0);
- while (size >= sizeof(struct reloc)) {
- if (read(inf, (char *)&crel, sizeof(crel)) != sizeof(crel))
- return -1;
-
- pos = crel.rpos + outf->ef_tbase;
- gette(outf, pos, &tstr);
- tstr.t_reloc = crel.rsize + 1; /* Fiddle! YUK!!! */
- tstr.t_rdisp = crel.rdisp;
- tstr.t_rptr = crel.rsegment;
- if (crel.rsegment == REXT) {
- if (crel.rsymbol >= outf->ef_stcnt)
- return -1;
- tstr.t_relsymb = outf->ef_stvec[crel.rsymbol];
- tstr.t_reldisp = gettw(outf, pos, (int)crel.rsize+1);
- }
- else {
- cont = gettw(outf, pos, (int)crel.rsize+1);
- tstr.t_relsymb = getnsymb(outf, crel.rsegment, cont);
- }
- tstr.t_relsymb->s_used++;
- putte(outf, pos, &tstr);
- size -= sizeof(crel);
- }
-
- /*
- * And now repeat all that for data relocations.
- */
-
- size = filhdr.rdsize;
-
- (void) lseek(inf, RDATAPOS + offset, 0);
- while (size >= sizeof(struct reloc)) {
- if (read(inf, (char *)&crel, sizeof(crel)) != sizeof(crel))
- return -1;
-
- pos = crel.rpos + outf->ef_dbase;
- getde(outf, pos, &dstr);
- dstr.d_reloc = crel.rsize + 1; /* Fiddle! YUK!!! */
- dstr.d_rptr = crel.rsegment;
-
- if (crel.rsegment == REXT) {
- if (crel.rsymbol >= outf->ef_stcnt)
- return -1;
- dstr.d_relsymb = outf->ef_stvec[crel.rsymbol];
- dstr.d_reldisp = getdw(outf, pos, (int)crel.rsize+1);
- }
- else {
- cont = getdw(outf, pos, (int)crel.rsize+1);
- dstr.d_relsymb = getnsymb(outf, crel.rsegment, cont);
- if (dstr.d_relsymb->s_type == TEXT) {
- gette(outf, cont, &tstr);
- tstr.t_dref = 1;
- putte(outf, cont, &tstr);
- }
- }
- switch (crel.rsize) {
- default:
- unimpl("Data byte relocation");
- break;
- case RWORD:
- unimpl("data word reloc");
- dstr.d_type = D_WORD;
- dstr.d_lng = 2;
- setde(outf, pos+1, D_CONT, 1);
- break;
- case RLONG:
- dstr.d_type = D_ADDR;
- dstr.d_lng = 4;
- setde(outf, pos+1, D_CONT, 1);
- setde(outf, pos+2, D_CONT, 1);
- setde(outf, pos+3, D_CONT, 1);
- break;
- }
- dstr.d_relsymb->s_used++;
- putde(outf, pos, &dstr);
- size -= sizeof(crel);
- }
- return 1;
- }
-
- /*
- * Process a symbol.
- */
-
- symbol dosymb(sy, type, val, fid)
- register symbol sy;
- int type;
- long val;
- ef_fid fid;
- {
- t_entry tstr;
- d_entry dstr;
-
- if (!sy->s_newsym) {
- if (type & EXTERN) {
- (void) fprintf(stderr, "Duplicate symbol %s\n", sy->s_name);
- exit(10);
- }
- if (++sy->s_defs > nmods)
- nmods = sy->s_defs;
- sy = inventsymb("DUP");
- }
-
- sy->s_value = val;
-
- switch (type) {
- default:
- return NULL;
-
- case EXTERN|UNDEF:
- if (val != 0) {
- sy->s_type = COMM;
- addit(&comtab, sy);
- }
- else
- sy->s_type = N_UNDF;
- sy->s_glob = 1;
- break;
-
- case EXTERN|ABS:
- sy->s_type = N_ABS;
- sy->s_glob = 1;
- addit(&abstab, sy);
- break;
-
- case ABS:
- sy->s_type = N_ABS;
- addit(&abstab, sy);
- break;
-
- case EXTERN|TEXT:
- case TEXT:
- sy->s_type = N_TEXT;
- gette(fid, val, &tstr);
- tstr.t_bdest = 1;
- if (type & EXTERN) {
- tstr.t_gbdest = 1;
- sy->s_glob = 1;
- }
- sy->s_link = tstr.t_lab;
- tstr.t_lab = sy;
- putte(fid, val, &tstr);
- break;
-
- case BSS:
- case EXTERN|BSS:
- sy->s_type = N_BSS;
- goto datrest;
- case DATA:
- case EXTERN|DATA:
- sy->s_type = N_DATA;
- datrest:
- getde(fid, val, &dstr);
- if (type & EXTERN)
- sy->s_glob = 1;
- sy->s_link = dstr.d_lab;
- dstr.d_lab = sy;
- putde(fid, val, &dstr);
- break;
- }
-
- sy->s_newsym = 0;
- return sy;
- }
-
- /*
- * Process relocation stuff in putative library modules.
- * The main function of all this is to mark which bits of the text
- * not to look at as I compare the stuff.
- *
- * As with "rrel", return -1 error, 0 no relocation, 1 relocation.
- */
-
- int rrell1(inf, offset, outf)
- int inf; /* a.out file (possibly in library) */
- long offset; /* Offset from start of inf of a.out file */
- ef_fid outf; /* Output file descriptor */
- {
- struct bhdr filhdr;
- struct reloc crel;
- t_entry tstr;
- register long size;
- long pos;
-
- /*
- * Read a.out header.
- */
-
- (void) lseek(inf, offset, 0);
-
- if (read(inf, (char *)&filhdr, sizeof(filhdr)) != sizeof(filhdr))
- return -1;
- if (filhdr.rtsize <= 0 && filhdr.rdsize <= 0)
- return 0;
-
- size = filhdr.rtsize;
-
- (void) lseek(inf, RTEXTPOS + offset, 0);
- while (size >= sizeof(struct reloc)) {
- if (read(inf, (char *)&crel, sizeof(crel)) != sizeof(crel))
- return -1;
-
- pos = crel.rpos + outf->ef_tbase;
- gette(outf, pos, &tstr);
- tstr.t_reloc = crel.rsize + 1; /* Fiddle! YUK!!! */
- tstr.t_rdisp = crel.rdisp;
- tstr.t_rptr = crel.rsegment;
- tstr.t_isrel = 1;
- putte(outf, pos, &tstr);
- if (crel.rsize == RLONG) {
- gette(outf, pos+2, &tstr);
- tstr.t_isrel = 1;
- putte(outf, pos+2, &tstr);
- }
- size -= sizeof(crel);
- }
-
- /*
- * Dont bother with data relocation at this stage. We'll
- * tie that up later.
- */
-
- return 1;
- }
-
- /*
- * Process a symbol in library file. The extern variable trelpos gives
- * the place in the main file where the library module is relocated.
- * We don't know the data position until we do the final merge, perhaps
- * not even then.
- */
-
- symbol dolsymb(sy, type, val, fid)
- register symbol sy;
- int type;
- long val;
- ef_fid fid;
- {
- t_entry tstr;
-
- switch (type) {
- default:
- return NULL;
-
- case EXTERN|UNDEF:
- if (!sy->s_newsym)
- return sy;
- sy->s_value = val;
- if (val != 0) {
- sy->s_type = COMM;
- addit(&dreltab, sy);
- }
- else
- sy->s_type = N_UNDF;
- sy->s_glob = 1;
- break;
-
- case EXTERN|ABS:
- if (!sy->s_newsym) {
- if (sy->s_type != N_ABS || sy->s_value != val)
- lclash("abs");
- }
- sy->s_type = N_ABS;
- sy->s_value = val;
- sy->s_glob = 1;
- addit(&abstab, sy);
- break;
-
- case EXTERN|TEXT:
- sy->s_type = N_TEXT;
- val += trelpos - fid->ef_tbase;
- if (!sy->s_newsym) {
- if (val != sy->s_value)
- lclash("tsym");
- return sy;
- }
- sy->s_value = val;
- gette(&mainfile, val, &tstr);
- tstr.t_bdest = 1;
- tstr.t_gbdest = 1;
- sy->s_glob = 1;
- sy->s_link = tstr.t_lab;
- tstr.t_lab = sy;
- putte(&mainfile, val, &tstr);
- break;
-
- case EXTERN|BSS:
- if (!sy->s_newsym)
- return sy;
- sy->s_type = N_BSS;
- sy->s_value = val - fid->ef_bbase;
- goto datrest;
-
- case EXTERN|DATA:
- if (!sy->s_newsym)
- return sy;
- sy->s_type = N_DATA;
- sy->s_value = val - fid->ef_dbase;
- datrest:
- sy->s_glob = 1;
- addit(&dreltab, sy);
- break;
- }
-
- sy->s_newsym = 0;
- return sy;
- }
-
- /*
- * Change definition of undefined symbol as we define it.
- */
-
- void reassign(sy, val)
- register symbol sy;
- long val;
- {
- sy->s_value = val;
-
- if (val < mainfile.ef_tbase) {
- sy->s_type = N_ABS;
- addit(&abstab, sy);
- }
- else if (val < mainfile.ef_dbase) {
- t_entry tstr;
-
- sy->s_type = N_TEXT;
- gette(&mainfile, val, &tstr);
- tstr.t_bdest = 1;
- tstr.t_gbdest = 1;
- sy->s_glob = 1;
- sy->s_link = tstr.t_lab;
- tstr.t_lab = sy;
- putte(&mainfile, val, &tstr);
- }
- else {
- d_entry dstr;
-
- sy->s_type = val < mainfile.ef_bbase? N_DATA: N_BSS;
- getde(&mainfile, val, &dstr);
- sy->s_link = dstr.d_lab;
- dstr.d_lab = sy;
- putde(&mainfile, val, &dstr);
- }
- }
-
- /*
- * When we discover where bss or data come, reallocate the table.
- */
-
- void zapdat(seg, inc)
- int seg;
- long inc;
- {
- register int i;
- register symbol csymb;
- d_entry dent;
-
- for (i = 0; i < dreltab.c_int; i++) {
- csymb = dreltab.c_symb[i];
- if (csymb->s_type != seg)
- continue;
- csymb->s_value += inc;
- getde(&mainfile, csymb->s_value, &dent);
- csymb->s_link = dent.d_lab;
- dent.d_lab = csymb;
- putde(&mainfile, csymb->s_value, &dent);
- }
- }
-
- /*
- * Process relocation stuff in library module which we are inserting.
- * Horrors if something goes wrong.
- */
-
- void rrell2(inf, offset, outf)
- int inf; /* a.out file (possibly in library) */
- long offset; /* Offset from start of inf of a.out file */
- ef_fid outf; /* Output file descriptor */
- {
- struct bhdr filhdr;
- struct reloc crel;
- t_entry mtstr;
- d_entry mdstr;
- register long size;
- register symbol csymb;
- long pos, mpos, mval, lval;
- int dhere = 0; /* Mark whether bss done */
-
- /*
- * Read a.out header.
- */
-
- (void) lseek(inf, offset, 0);
-
- if (read(inf, (char *)&filhdr, sizeof(filhdr)) != sizeof(filhdr))
- return;
- if (filhdr.rtsize <= 0 && filhdr.rdsize <= 0)
- return;
-
- size = filhdr.rtsize;
-
- (void) lseek(inf, RTEXTPOS + offset, 0);
- for (; size >= sizeof(struct reloc); size -= sizeof(crel)) {
- if (read(inf, (char *)&crel, sizeof(crel)) != sizeof(crel))
- lclash("rd trel");
-
- pos = crel.rpos + outf->ef_tbase;
- mpos = crel.rpos + trelpos;
- gette(&mainfile, mpos, &mtstr);
- lval = gettw(outf, pos, (int)crel.rsize+1);
- mval = gettw(&mainfile, mpos, (int)crel.rsize+1);
-
- switch (crel.rsegment) {
- case RTEXT:
- if (lval + trelpos - outf->ef_tbase != mval)
- lclash("Trel");
- continue;
- case RDATA:
- if (donedrel) {
- if (lval + drelpos - outf->ef_dbase != mval)
- lclash("Drel");
- }
- else {
- donedrel++;
- drelpos = mval - lval + outf->ef_dbase;
- }
- continue;
- case RBSS:
- if (donebrel) {
- if (lval + brelpos - outf->ef_bbase != mval)
- lclash("brel");
- }
- else {
- donebrel++;
- brelpos = mval - lval + outf->ef_bbase;
- }
- continue;
- case REXT:
- if (crel.rsymbol >= outf->ef_stcnt)
- lclash("Bad sy no");
- csymb = outf->ef_stvec[crel.rsymbol];
- if (csymb == NULL)
- continue;
- switch (csymb->s_type) {
- case N_UNDF:
- reassign(csymb, mval - lval);
- break;
- case N_ABS:
- if (lval + csymb->s_value != mval)
- lclash("abs rel");
- break;
- case N_TEXT:
- if (lval + csymb->s_value != mval)
- lclash("text rel");
- break;
- case N_DATA:
- if (lval + csymb->s_value != mval)
- lclash("data rel");
- break;
- case N_BSS:
- if (lval + csymb->s_value != mval)
- lclash("bss rel");
- break;
- case COMM:
- reassign(csymb, mval - lval);
- break;
- }
- mtstr.t_relsymb = csymb;
- mtstr.t_reldisp = lval;
- break;
- }
- }
-
- /*
- * Relocate data and bss if possible.
- */
-
- if (donebrel) {
- zapdat(N_BSS, brelpos);
- dhere++;
- }
-
- if (!donedrel)
- return;
-
-
- zapdat(N_DATA, drelpos);
-
- /*
- * And now repeat all that for data relocations if possible
- */
-
- size = filhdr.rdsize;
-
- (void) lseek(inf, RDATAPOS + offset, 0);
- for (; size >= sizeof(struct reloc); size -= sizeof(crel)) {
- if (read(inf, (char *)&crel, sizeof(crel)) != sizeof(crel))
- lclash("Rd drel");
-
- if (crel.rsize != RLONG)
- continue;
-
- pos = crel.rpos + outf->ef_dbase;
- mpos = crel.rpos + drelpos;
- getde(&mainfile, mpos, &mdstr);
- lval = getdw(outf, pos, (int)crel.rsize+1);
- mval = getdw(&mainfile, mpos, (int)crel.rsize+1);
- switch (crel.rsegment) {
- case RTEXT:
- if (lval + trelpos - outf->ef_tbase != mval)
- lclash("Trel-d");
- continue;
- case RDATA:
- if (lval + drelpos - outf->ef_dbase != mval)
- lclash("Drel-d");
- continue;
- case RBSS:
- if (donebrel) {
- if (lval + brelpos - outf->ef_bbase != mval)
- lclash("brel");
- }
- else {
- donebrel++;
- brelpos = mval - lval + outf->ef_bbase;
- }
- continue;
- case REXT:
- if (crel.rsymbol >= outf->ef_stcnt)
- lclash("Bad sy no");
- csymb = outf->ef_stvec[crel.rsymbol];
- if (csymb == NULL)
- continue;
- switch (csymb->s_type) {
- case N_UNDF:
- reassign(csymb, mval - lval);
- break;
- case N_ABS:
- if (lval + csymb->s_value != mval)
- lclash("abs rel");
- break;
- case N_TEXT:
- if (lval + csymb->s_value != mval)
- lclash("text rel");
- break;
- case N_DATA:
- if (lval + csymb->s_value != mval)
- lclash("data rel");
- break;
- case N_BSS:
- if (lval + csymb->s_value != mval)
- lclash("bss rel");
- break;
- case COMM:
- reassign(csymb, mval - lval);
- break;
- }
- mtstr.t_relsymb = csymb;
- mtstr.t_reldisp = lval;
- break;
- }
- }
-
- if (dhere || !donebrel)
- return;
-
- zapdat(N_BSS, brelpos);
- }
- SHAR_EOF
- if test 18429 -ne "`wc -c < 'robj.c'`"
- then
- echo shar: error transmitting "'robj.c'" '(should have been 18429 characters)'
- fi
- fi
- exit 0
- # End of shell archive
-