2011-03-30 12:46:40 +00:00
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#define EXTERN
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#include "l.h"
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#include <ar.h>
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#ifndef DEFAULT
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#define DEFAULT '9'
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#endif
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char *noname = "<none>";
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char symname[] = SYMDEF;
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char thechar = 'v';
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char *thestring = "mips";
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/*
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* -H0 -T0x40004C -D0x10000000 is abbrev unix
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* -H1 -T0x80020000 -R4 is bootp() format for 3k
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2015-03-22 16:49:28 +00:00
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* -H2 -T0x4020 -R0x4000 is plan9 format
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2011-03-30 12:46:40 +00:00
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* -H3 -T0x80020000 -R8 is bootp() format for 4k
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* -H4 -T0x400000 -R4 is sgi unix coff executable
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* -H5 -T0x4000A0 -R4 is sgi unix elf executable
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* -H6 is headerless
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*/
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int little;
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void
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main(int argc, char *argv[])
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{
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int c;
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char *a;
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Binit(&bso, 1, OWRITE);
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cout = -1;
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listinit();
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outfile = 0;
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nerrors = 0;
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curtext = P;
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HEADTYPE = -1;
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INITTEXT = -1;
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INITDAT = -1;
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INITRND = -1;
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INITENTRY = 0;
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ARGBEGIN {
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default:
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c = ARGC();
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if(c >= 0 && c < sizeof(debug))
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debug[c]++;
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break;
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case 'o':
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outfile = ARGF();
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break;
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case 'E':
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a = ARGF();
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if(a)
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INITENTRY = a;
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break;
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case 'L': /* for little-endian mips */
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thechar = '0';
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thestring = "spim";
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little = 1;
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break;
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case 'T':
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a = ARGF();
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if(a)
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INITTEXT = atolwhex(a);
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break;
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case 'D':
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a = ARGF();
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if(a)
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INITDAT = atolwhex(a);
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break;
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case 'R':
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a = ARGF();
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if(a)
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INITRND = atolwhex(a);
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break;
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case 'H':
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a = ARGF();
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if(a)
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HEADTYPE = atolwhex(a);
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/* do something about setting INITTEXT */
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break;
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} ARGEND
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USED(argc);
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if(*argv == 0) {
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diag("usage: %cl [-options] objects", thechar);
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errorexit();
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}
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if(!debug['9'] && !debug['U'] && !debug['B'])
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debug[DEFAULT] = 1;
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if(HEADTYPE == -1) {
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if(debug['U'])
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HEADTYPE = 0;
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if(debug['B'])
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HEADTYPE = 1;
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if(debug['9'])
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HEADTYPE = 2;
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}
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switch(HEADTYPE) {
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default:
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diag("unknown -H option");
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errorexit();
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case 0: /* unix simple */
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HEADR = 20L+56L;
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if(INITTEXT == -1)
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INITTEXT = 0x40004CL;
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if(INITDAT == -1)
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INITDAT = 0x10000000L;
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if(INITRND == -1)
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INITRND = 0;
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break;
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case 1: /* boot for 3k */
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HEADR = 20L+60L;
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if(INITTEXT == -1)
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INITTEXT = 0x80020000L;
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if(INITDAT == -1)
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INITDAT = 0;
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if(INITRND == -1)
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INITRND = 4;
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break;
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case 2: /* plan 9 */
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HEADR = 32L;
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if(INITDAT == -1)
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INITDAT = 0;
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if(INITRND == -1)
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2015-03-22 16:49:28 +00:00
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INITRND = 16*1024;
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if(INITTEXT == -1)
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INITTEXT = INITRND+HEADR;
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2011-03-30 12:46:40 +00:00
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break;
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case 3: /* boot for 4k */
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HEADR = 20L+56L+3*40L;
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if(INITTEXT == -1)
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INITTEXT = 0x80020000L;
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if(INITDAT == -1)
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INITDAT = 0;
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if(INITRND == -1)
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INITRND = 8;
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break;
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case 4: /* sgi unix coff executable */
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HEADR = 20L+56L+3*40L;
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if(INITTEXT == -1)
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INITTEXT = 0x00400000L+HEADR;
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if(INITDAT == -1)
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INITDAT = 0x10000000;
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if(INITRND == -1)
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INITRND = 0;
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break;
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case 5: /* sgi unix elf executable */
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HEADR = rnd(52L+3*32L, 16);
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if(INITTEXT == -1)
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INITTEXT = 0x00400000L+HEADR;
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if(INITDAT == -1)
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INITDAT = 0x10000000;
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if(INITRND == -1)
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INITRND = 0;
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break;
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case 6: /* headerless */
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HEADR = 0;
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if(INITTEXT == -1)
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INITTEXT = 0x80000000L+HEADR;
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if(INITDAT == -1)
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INITDAT = 0;
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if(INITRND == -1)
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INITRND = 4096;
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break;
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}
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if(INITDAT != 0 && INITRND != 0)
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print("warning: -D0x%lux is ignored because of -R0x%lux\n",
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INITDAT, INITRND);
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if(debug['v'])
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Bprint(&bso, "HEADER = -H0x%d -T0x%lux -D0x%lux -R0x%lux\n",
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HEADTYPE, INITTEXT, INITDAT, INITRND);
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Bflush(&bso);
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zprg.as = AGOK;
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zprg.reg = NREG;
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zprg.from.name = D_NONE;
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zprg.from.type = D_NONE;
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zprg.from.reg = NREG;
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zprg.to = zprg.from;
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buildop();
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histgen = 0;
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textp = P;
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datap = P;
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pc = 0;
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dtype = 4;
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if(outfile == 0) {
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static char name[20];
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snprint(name, sizeof name, "%c.out", thechar);
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outfile = name;
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}
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cout = create(outfile, 1, 0775);
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if(cout < 0) {
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diag("%s: cannot create", outfile);
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errorexit();
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}
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nuxiinit();
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version = 0;
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cbp = buf.cbuf;
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cbc = sizeof(buf.cbuf);
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firstp = prg();
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lastp = firstp;
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if(INITENTRY == 0) {
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INITENTRY = "_main";
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if(debug['p'])
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INITENTRY = "_mainp";
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if(!debug['l'])
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lookup(INITENTRY, 0)->type = SXREF;
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} else
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lookup(INITENTRY, 0)->type = SXREF;
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while(*argv)
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objfile(*argv++);
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if(!debug['l'])
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loadlib();
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firstp = firstp->link;
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if(firstp == P)
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goto out;
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patch();
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if(debug['p'])
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if(debug['1'])
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doprof1();
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else
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doprof2();
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dodata();
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follow();
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if(firstp == P)
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goto out;
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noops();
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span();
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asmb();
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undef();
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out:
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if(debug['v']) {
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Bprint(&bso, "%5.2f cpu time\n", cputime());
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Bprint(&bso, "%d sizeof adr\n", sizeof(Adr));
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Bprint(&bso, "%d sizeof prog\n", sizeof(Prog));
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}
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Bflush(&bso);
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errorexit();
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}
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void
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loadlib(void)
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{
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int i;
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long h;
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Sym *s;
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loop:
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xrefresolv = 0;
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for(i=0; i<libraryp; i++) {
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if(debug['v'])
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Bprint(&bso, "%5.2f autolib: %s (from %s)\n", cputime(), library[i], libraryobj[i]);
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objfile(library[i]);
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}
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if(xrefresolv)
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for(h=0; h<nelem(hash); h++)
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for(s = hash[h]; s != S; s = s->link)
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if(s->type == SXREF)
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goto loop;
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}
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void
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errorexit(void)
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{
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if(nerrors) {
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if(cout >= 0)
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remove(outfile);
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exits("error");
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}
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exits(0);
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}
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void
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objfile(char *file)
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{
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long off, esym, cnt, l;
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int f, work;
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Sym *s;
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char magbuf[SARMAG];
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char name[100], pname[150];
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struct ar_hdr arhdr;
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char *e, *start, *stop;
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if(file[0] == '-' && file[1] == 'l') {
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if(debug['9'])
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2015-02-17 21:13:35 +00:00
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snprint(name, sizeof name, "/%s/lib/lib%s.a", thestring, file+2);
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2011-03-30 12:46:40 +00:00
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else
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2015-02-17 21:13:35 +00:00
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snprint(name, sizeof name, "/usr/%clib/lib%s.a", thechar, file+2);
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2011-03-30 12:46:40 +00:00
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file = name;
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}
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if(debug['v'])
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Bprint(&bso, "%5.2f ldobj: %s\n", cputime(), file);
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Bflush(&bso);
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f = open(file, 0);
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if(f < 0) {
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diag("cannot open file: %s", file);
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errorexit();
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}
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l = read(f, magbuf, SARMAG);
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if(l != SARMAG || strncmp(magbuf, ARMAG, SARMAG)){
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/* load it as a regular file */
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l = seek(f, 0L, 2);
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seek(f, 0L, 0);
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ldobj(f, l, file);
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close(f);
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return;
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}
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if(debug['v'])
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Bprint(&bso, "%5.2f ldlib: %s\n", cputime(), file);
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l = read(f, &arhdr, SAR_HDR);
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if(l != SAR_HDR) {
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diag("%s: short read on archive file symbol header", file);
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goto out;
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}
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if(strncmp(arhdr.name, symname, strlen(symname))) {
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diag("%s: first entry not symbol header", file);
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goto out;
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}
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esym = SARMAG + SAR_HDR + atolwhex(arhdr.size);
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off = SARMAG + SAR_HDR;
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/*
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* just bang the whole symbol file into memory
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*/
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seek(f, off, 0);
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cnt = esym - off;
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start = malloc(cnt + 10);
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cnt = read(f, start, cnt);
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if(cnt <= 0){
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close(f);
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return;
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}
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stop = &start[cnt];
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memset(stop, 0, 10);
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work = 1;
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while(work){
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if(debug['v'])
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Bprint(&bso, "%5.2f library pass: %s\n", cputime(), file);
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Bflush(&bso);
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work = 0;
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for(e = start; e < stop; e = strchr(e+5, 0) + 1) {
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s = lookup(e+5, 0);
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if(s->type != SXREF)
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continue;
|
2015-02-17 21:13:35 +00:00
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snprint(pname, sizeof pname, "%s(%s)", file, s->name);
|
2011-03-30 12:46:40 +00:00
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if(debug['v'])
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Bprint(&bso, "%5.2f library: %s\n", cputime(), pname);
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Bflush(&bso);
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l = e[1] & 0xff;
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l |= (e[2] & 0xff) << 8;
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l |= (e[3] & 0xff) << 16;
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l |= (e[4] & 0xff) << 24;
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seek(f, l, 0);
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l = read(f, &arhdr, SAR_HDR);
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if(l != SAR_HDR)
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goto bad;
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if(strncmp(arhdr.fmag, ARFMAG, sizeof(arhdr.fmag)))
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goto bad;
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l = atolwhex(arhdr.size);
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ldobj(f, l, pname);
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if(s->type == SXREF) {
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diag("%s: failed to load: %s", file, s->name);
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errorexit();
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}
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work = 1;
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xrefresolv = 1;
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}
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}
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return;
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bad:
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|
|
diag("%s: bad or out of date archive", file);
|
|
|
|
out:
|
|
|
|
close(f);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
zaddr(uchar *p, Adr *a, Sym *h[])
|
|
|
|
{
|
|
|
|
int i, c;
|
|
|
|
long l;
|
|
|
|
Sym *s;
|
|
|
|
Auto *u;
|
|
|
|
|
|
|
|
c = p[2];
|
|
|
|
if(c < 0 || c > NSYM){
|
|
|
|
print("sym out of range: %d\n", c);
|
|
|
|
p[0] = ALAST+1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
a->type = p[0];
|
|
|
|
a->reg = p[1];
|
|
|
|
a->sym = h[c];
|
|
|
|
a->name = p[3];
|
|
|
|
c = 4;
|
|
|
|
|
|
|
|
if(a->reg < 0 || a->reg > NREG) {
|
|
|
|
print("register out of range %d\n", a->reg);
|
|
|
|
p[0] = ALAST+1;
|
|
|
|
return 0; /* force real diagnostic */
|
|
|
|
}
|
|
|
|
|
|
|
|
switch(a->type) {
|
|
|
|
default:
|
|
|
|
print("unknown type %d\n", a->type);
|
|
|
|
p[0] = ALAST+1;
|
|
|
|
return 0; /* force real diagnostic */
|
|
|
|
|
|
|
|
case D_NONE:
|
|
|
|
case D_REG:
|
|
|
|
case D_FREG:
|
|
|
|
case D_MREG:
|
|
|
|
case D_FCREG:
|
|
|
|
case D_LO:
|
|
|
|
case D_HI:
|
|
|
|
break;
|
|
|
|
|
|
|
|
case D_BRANCH:
|
|
|
|
case D_OREG:
|
|
|
|
case D_CONST:
|
|
|
|
case D_OCONST:
|
|
|
|
a->offset = p[4] | (p[5]<<8) |
|
|
|
|
(p[6]<<16) | (p[7]<<24);
|
|
|
|
c += 4;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case D_SCONST:
|
2020-05-12 20:04:30 +00:00
|
|
|
a->sval = malloc(NSNAME);
|
2011-03-30 12:46:40 +00:00
|
|
|
memmove(a->sval, p+4, NSNAME);
|
|
|
|
c += NSNAME;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case D_FCONST:
|
2020-05-12 20:04:30 +00:00
|
|
|
a->ieee = malloc(sizeof(Ieee));
|
2011-03-30 12:46:40 +00:00
|
|
|
a->ieee->l = p[4] | (p[5]<<8) |
|
|
|
|
(p[6]<<16) | (p[7]<<24);
|
|
|
|
a->ieee->h = p[8] | (p[9]<<8) |
|
|
|
|
(p[10]<<16) | (p[11]<<24);
|
|
|
|
c += 8;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
s = a->sym;
|
|
|
|
if(s == S)
|
|
|
|
return c;
|
|
|
|
i = a->name;
|
|
|
|
if(i != D_AUTO && i != D_PARAM)
|
|
|
|
return c;
|
|
|
|
|
|
|
|
l = a->offset;
|
|
|
|
for(u=curauto; u; u=u->link)
|
|
|
|
if(u->asym == s)
|
|
|
|
if(u->type == i) {
|
|
|
|
if(u->aoffset > l)
|
|
|
|
u->aoffset = l;
|
|
|
|
return c;
|
|
|
|
}
|
|
|
|
|
2020-05-12 20:04:30 +00:00
|
|
|
u = malloc(sizeof(Auto));
|
2011-03-30 12:46:40 +00:00
|
|
|
u->link = curauto;
|
|
|
|
curauto = u;
|
|
|
|
u->asym = s;
|
|
|
|
u->aoffset = l;
|
|
|
|
u->type = i;
|
|
|
|
return c;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
addlib(char *obj)
|
|
|
|
{
|
|
|
|
char name[1024], comp[256], *p;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if(histfrogp <= 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if(histfrog[0]->name[1] == '/') {
|
2015-02-17 21:13:35 +00:00
|
|
|
name[0] = 0;
|
2011-03-30 12:46:40 +00:00
|
|
|
i = 1;
|
|
|
|
} else
|
|
|
|
if(histfrog[0]->name[1] == '.') {
|
2015-02-17 21:13:35 +00:00
|
|
|
snprint(name, sizeof name, ".");
|
2011-03-30 12:46:40 +00:00
|
|
|
i = 0;
|
|
|
|
} else {
|
|
|
|
if(debug['9'])
|
2015-02-17 21:13:35 +00:00
|
|
|
snprint(name, sizeof name, "/%s/lib", thestring);
|
2011-03-30 12:46:40 +00:00
|
|
|
else
|
2015-02-17 21:13:35 +00:00
|
|
|
snprint(name, sizeof name, "/usr/%clib", thechar);
|
2011-03-30 12:46:40 +00:00
|
|
|
i = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
for(; i<histfrogp; i++) {
|
|
|
|
snprint(comp, sizeof comp, histfrog[i]->name+1);
|
|
|
|
for(;;) {
|
|
|
|
p = strstr(comp, "$O");
|
|
|
|
if(p == 0)
|
|
|
|
break;
|
|
|
|
memmove(p+1, p+2, strlen(p+2)+1);
|
|
|
|
p[0] = thechar;
|
|
|
|
}
|
|
|
|
for(;;) {
|
|
|
|
p = strstr(comp, "$M");
|
|
|
|
if(p == 0)
|
|
|
|
break;
|
|
|
|
if(strlen(comp)+strlen(thestring)-2+1 >= sizeof comp) {
|
|
|
|
diag("library component too long");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
memmove(p+strlen(thestring), p+2, strlen(p+2)+1);
|
|
|
|
memmove(p, thestring, strlen(thestring));
|
|
|
|
}
|
|
|
|
if(strlen(name) + strlen(comp) + 3 >= sizeof(name)) {
|
|
|
|
diag("library component too long");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
strcat(name, "/");
|
|
|
|
strcat(name, comp);
|
|
|
|
}
|
|
|
|
for(i=0; i<libraryp; i++)
|
|
|
|
if(strcmp(name, library[i]) == 0)
|
|
|
|
return;
|
|
|
|
if(libraryp == nelem(library)){
|
|
|
|
diag("too many autolibs; skipping %s", name);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
p = malloc(strlen(name) + 1);
|
|
|
|
strcpy(p, name);
|
|
|
|
library[libraryp] = p;
|
|
|
|
p = malloc(strlen(obj) + 1);
|
|
|
|
strcpy(p, obj);
|
|
|
|
libraryobj[libraryp] = p;
|
|
|
|
libraryp++;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
addhist(long line, int type)
|
|
|
|
{
|
|
|
|
Auto *u;
|
|
|
|
Sym *s;
|
|
|
|
int i, j, k;
|
|
|
|
|
|
|
|
u = malloc(sizeof(Auto));
|
|
|
|
s = malloc(sizeof(Sym));
|
|
|
|
s->name = malloc(2*(histfrogp+1) + 1);
|
|
|
|
|
|
|
|
u->asym = s;
|
|
|
|
u->type = type;
|
|
|
|
u->aoffset = line;
|
|
|
|
u->link = curhist;
|
|
|
|
curhist = u;
|
|
|
|
|
|
|
|
j = 1;
|
|
|
|
for(i=0; i<histfrogp; i++) {
|
|
|
|
k = histfrog[i]->value;
|
|
|
|
s->name[j+0] = k>>8;
|
|
|
|
s->name[j+1] = k;
|
|
|
|
j += 2;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
histtoauto(void)
|
|
|
|
{
|
|
|
|
Auto *l;
|
|
|
|
|
|
|
|
while(l = curhist) {
|
|
|
|
curhist = l->link;
|
|
|
|
l->link = curauto;
|
|
|
|
curauto = l;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
collapsefrog(Sym *s)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* bad encoding of path components only allows
|
|
|
|
* MAXHIST components. if there is an overflow,
|
|
|
|
* first try to collapse xxx/..
|
|
|
|
*/
|
|
|
|
for(i=1; i<histfrogp; i++)
|
|
|
|
if(strcmp(histfrog[i]->name+1, "..") == 0) {
|
|
|
|
memmove(histfrog+i-1, histfrog+i+1,
|
|
|
|
(histfrogp-i-1)*sizeof(histfrog[0]));
|
|
|
|
histfrogp--;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* next try to collapse .
|
|
|
|
*/
|
|
|
|
for(i=0; i<histfrogp; i++)
|
|
|
|
if(strcmp(histfrog[i]->name+1, ".") == 0) {
|
|
|
|
memmove(histfrog+i, histfrog+i+1,
|
|
|
|
(histfrogp-i-1)*sizeof(histfrog[0]));
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* last chance, just truncate from front
|
|
|
|
*/
|
|
|
|
memmove(histfrog+0, histfrog+1,
|
|
|
|
(histfrogp-1)*sizeof(histfrog[0]));
|
|
|
|
|
|
|
|
out:
|
|
|
|
histfrog[histfrogp-1] = s;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
nopout(Prog *p)
|
|
|
|
{
|
|
|
|
p->as = ANOP;
|
|
|
|
p->from.type = D_NONE;
|
|
|
|
p->to.type = D_NONE;
|
|
|
|
}
|
|
|
|
|
|
|
|
uchar*
|
|
|
|
readsome(int f, uchar *buf, uchar *good, uchar *stop, int max)
|
|
|
|
{
|
|
|
|
int n;
|
|
|
|
|
|
|
|
n = stop - good;
|
|
|
|
memmove(buf, good, stop - good);
|
|
|
|
stop = buf + n;
|
|
|
|
n = MAXIO - n;
|
|
|
|
if(n > max)
|
|
|
|
n = max;
|
|
|
|
n = read(f, stop, n);
|
|
|
|
if(n <= 0)
|
|
|
|
return 0;
|
|
|
|
return stop + n;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
ldobj(int f, long c, char *pn)
|
|
|
|
{
|
|
|
|
long ipc;
|
|
|
|
Prog *p, *t;
|
|
|
|
uchar *bloc, *bsize, *stop;
|
|
|
|
Sym *h[NSYM], *s, *di;
|
|
|
|
int v, o, r, skip;
|
|
|
|
|
|
|
|
bsize = buf.xbuf;
|
|
|
|
bloc = buf.xbuf;
|
|
|
|
di = S;
|
|
|
|
|
|
|
|
newloop:
|
|
|
|
memset(h, 0, sizeof(h));
|
|
|
|
version++;
|
|
|
|
histfrogp = 0;
|
|
|
|
ipc = pc;
|
|
|
|
skip = 0;
|
|
|
|
|
|
|
|
loop:
|
|
|
|
if(c <= 0)
|
|
|
|
goto eof;
|
|
|
|
r = bsize - bloc;
|
|
|
|
if(r < 100 && r < c) { /* enough for largest prog */
|
|
|
|
bsize = readsome(f, buf.xbuf, bloc, bsize, c);
|
|
|
|
if(bsize == 0)
|
|
|
|
goto eof;
|
|
|
|
bloc = buf.xbuf;
|
|
|
|
goto loop;
|
|
|
|
}
|
|
|
|
o = bloc[0]; /* as */
|
|
|
|
if(o <= AXXX || o >= ALAST) {
|
|
|
|
diag("%s: line %ld: opcode out of range %d", pn, pc-ipc, o);
|
|
|
|
print(" probably not a .%c file\n", thechar);
|
|
|
|
errorexit();
|
|
|
|
}
|
|
|
|
if(o == ANAME || o == ASIGNAME) {
|
|
|
|
if(o == ASIGNAME) {
|
|
|
|
bloc += 4;
|
|
|
|
c -= 4;
|
|
|
|
}
|
|
|
|
stop = memchr(&bloc[3], 0, bsize-&bloc[3]);
|
|
|
|
if(stop == 0){
|
|
|
|
bsize = readsome(f, buf.xbuf, bloc, bsize, c);
|
|
|
|
if(bsize == 0)
|
|
|
|
goto eof;
|
|
|
|
bloc = buf.xbuf;
|
|
|
|
stop = memchr(&bloc[3], 0, bsize-&bloc[3]);
|
|
|
|
if(stop == 0){
|
|
|
|
fprint(2, "%s: name too long\n", pn);
|
|
|
|
errorexit();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
v = bloc[1]; /* type */
|
|
|
|
o = bloc[2]; /* sym */
|
|
|
|
bloc += 3;
|
|
|
|
c -= 3;
|
|
|
|
|
|
|
|
r = 0;
|
|
|
|
if(v == D_STATIC)
|
|
|
|
r = version;
|
|
|
|
s = lookup((char*)bloc, r);
|
|
|
|
c -= &stop[1] - bloc;
|
|
|
|
bloc = stop + 1;
|
|
|
|
|
|
|
|
if(debug['W'])
|
|
|
|
print(" ANAME %s\n", s->name);
|
|
|
|
h[o] = s;
|
|
|
|
if((v == D_EXTERN || v == D_STATIC) && s->type == 0)
|
|
|
|
s->type = SXREF;
|
|
|
|
if(v == D_FILE) {
|
|
|
|
if(s->type != SFILE) {
|
|
|
|
histgen++;
|
|
|
|
s->type = SFILE;
|
|
|
|
s->value = histgen;
|
|
|
|
}
|
|
|
|
if(histfrogp < MAXHIST) {
|
|
|
|
histfrog[histfrogp] = s;
|
|
|
|
histfrogp++;
|
|
|
|
} else
|
|
|
|
collapsefrog(s);
|
|
|
|
}
|
|
|
|
goto loop;
|
|
|
|
}
|
|
|
|
|
2020-05-12 20:04:30 +00:00
|
|
|
p = malloc(sizeof(Prog));
|
2011-03-30 12:46:40 +00:00
|
|
|
p->as = o;
|
|
|
|
p->reg = bloc[1] & 0x7f;
|
|
|
|
if(bloc[1] & 0x80)
|
|
|
|
p->mark = NOSCHED;
|
|
|
|
p->line = bloc[2] | (bloc[3]<<8) | (bloc[4]<<16) | (bloc[5]<<24);
|
|
|
|
|
|
|
|
r = zaddr(bloc+6, &p->from, h) + 6;
|
|
|
|
r += zaddr(bloc+r, &p->to, h);
|
|
|
|
bloc += r;
|
|
|
|
c -= r;
|
|
|
|
|
|
|
|
if(p->reg < 0 || p->reg > NREG)
|
|
|
|
diag("register out of range %d", p->reg);
|
|
|
|
|
|
|
|
p->link = P;
|
|
|
|
p->cond = P;
|
|
|
|
|
|
|
|
if(debug['W'])
|
|
|
|
print("%P\n", p);
|
|
|
|
|
|
|
|
switch(o) {
|
|
|
|
case AHISTORY:
|
|
|
|
if(p->to.offset == -1) {
|
|
|
|
addlib(pn);
|
|
|
|
histfrogp = 0;
|
|
|
|
goto loop;
|
|
|
|
}
|
|
|
|
addhist(p->line, D_FILE); /* 'z' */
|
|
|
|
if(p->to.offset)
|
|
|
|
addhist(p->to.offset, D_FILE1); /* 'Z' */
|
|
|
|
histfrogp = 0;
|
|
|
|
goto loop;
|
|
|
|
|
|
|
|
case AEND:
|
|
|
|
histtoauto();
|
|
|
|
if(curtext != P)
|
|
|
|
curtext->to.autom = curauto;
|
|
|
|
curauto = 0;
|
|
|
|
curtext = P;
|
|
|
|
if(c)
|
|
|
|
goto newloop;
|
|
|
|
return;
|
|
|
|
|
|
|
|
case AGLOBL:
|
|
|
|
s = p->from.sym;
|
|
|
|
if(s == S) {
|
|
|
|
diag("GLOBL must have a name\n%P", p);
|
|
|
|
errorexit();
|
|
|
|
}
|
2017-03-19 02:05:24 +00:00
|
|
|
if (p->reg & DUPOK)
|
|
|
|
s->dupok = 1;
|
2011-03-30 12:46:40 +00:00
|
|
|
if(s->type == 0 || s->type == SXREF) {
|
|
|
|
s->type = SBSS;
|
|
|
|
s->value = 0;
|
|
|
|
}
|
|
|
|
if(s->type != SBSS) {
|
|
|
|
diag("redefinition: %s\n%P", s->name, p);
|
|
|
|
s->type = SBSS;
|
|
|
|
s->value = 0;
|
|
|
|
}
|
|
|
|
if(p->to.offset > s->value)
|
|
|
|
s->value = p->to.offset;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ADYNT:
|
|
|
|
if(p->to.sym == S) {
|
|
|
|
diag("DYNT without a sym\n%P", p);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
di = p->to.sym;
|
|
|
|
p->reg = 4;
|
|
|
|
if(di->type == SXREF) {
|
|
|
|
if(debug['z'])
|
|
|
|
Bprint(&bso, "%P set to %d\n", p, dtype);
|
|
|
|
di->type = SCONST;
|
|
|
|
di->value = dtype;
|
|
|
|
dtype += 4;
|
|
|
|
}
|
|
|
|
if(p->from.sym == S)
|
|
|
|
break;
|
|
|
|
|
|
|
|
p->from.offset = di->value;
|
|
|
|
p->from.sym->type = SDATA;
|
|
|
|
if(curtext == P) {
|
|
|
|
diag("DYNT not in text: %P", p);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
p->to.sym = curtext->from.sym;
|
|
|
|
p->to.type = D_CONST;
|
|
|
|
p->link = datap;
|
|
|
|
datap = p;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AINIT:
|
|
|
|
if(p->from.sym == S) {
|
|
|
|
diag("INIT without a sym\n%P", p);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if(di == S) {
|
|
|
|
diag("INIT without previous DYNT\n%P", p);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
p->from.offset = di->value;
|
|
|
|
p->from.sym->type = SDATA;
|
|
|
|
p->link = datap;
|
|
|
|
datap = p;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ADATA:
|
|
|
|
if(p->from.sym == S) {
|
|
|
|
diag("DATA without a sym\n%P", p);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
p->link = datap;
|
|
|
|
datap = p;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AGOK:
|
|
|
|
diag("unknown opcode\n%P", p);
|
|
|
|
p->pc = pc;
|
|
|
|
pc++;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ATEXT:
|
|
|
|
if(curtext != P) {
|
|
|
|
histtoauto();
|
|
|
|
curtext->to.autom = curauto;
|
|
|
|
curauto = 0;
|
|
|
|
}
|
|
|
|
skip = 0;
|
|
|
|
curtext = p;
|
|
|
|
autosize = (p->to.offset+3L) & ~3L;
|
|
|
|
p->to.offset = autosize;
|
|
|
|
autosize += 4;
|
|
|
|
s = p->from.sym;
|
|
|
|
if(s == S) {
|
|
|
|
diag("TEXT must have a name\n%P", p);
|
|
|
|
errorexit();
|
|
|
|
}
|
|
|
|
if(s->type != 0 && s->type != SXREF) {
|
|
|
|
if(p->reg & DUPOK) {
|
|
|
|
skip = 1;
|
|
|
|
goto casedef;
|
|
|
|
}
|
|
|
|
diag("redefinition: %s\n%P", s->name, p);
|
|
|
|
}
|
|
|
|
s->type = STEXT;
|
|
|
|
s->value = pc;
|
|
|
|
lastp->link = p;
|
|
|
|
lastp = p;
|
|
|
|
p->pc = pc;
|
|
|
|
pc++;
|
|
|
|
if(textp == P) {
|
|
|
|
textp = p;
|
|
|
|
etextp = p;
|
|
|
|
goto loop;
|
|
|
|
}
|
|
|
|
etextp->cond = p;
|
|
|
|
etextp = p;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ASUB:
|
|
|
|
case ASUBU:
|
|
|
|
if(p->from.type == D_CONST)
|
|
|
|
if(p->from.name == D_NONE) {
|
|
|
|
p->from.offset = -p->from.offset;
|
|
|
|
if(p->as == ASUB)
|
|
|
|
p->as = AADD;
|
|
|
|
else
|
|
|
|
p->as = AADDU;
|
|
|
|
}
|
|
|
|
goto casedef;
|
|
|
|
|
|
|
|
case AMOVF:
|
|
|
|
if(skip)
|
|
|
|
goto casedef;
|
|
|
|
|
|
|
|
if(p->from.type == D_FCONST) {
|
|
|
|
/* size sb 9 max */
|
2015-02-17 21:13:35 +00:00
|
|
|
snprint(literal, sizeof literal, "$%lux", ieeedtof(p->from.ieee));
|
2011-03-30 12:46:40 +00:00
|
|
|
s = lookup(literal, 0);
|
|
|
|
if(s->type == 0) {
|
|
|
|
s->type = SBSS;
|
|
|
|
s->value = 4;
|
|
|
|
t = prg();
|
|
|
|
t->as = ADATA;
|
|
|
|
t->line = p->line;
|
|
|
|
t->from.type = D_OREG;
|
|
|
|
t->from.sym = s;
|
|
|
|
t->from.name = D_EXTERN;
|
|
|
|
t->reg = 4;
|
|
|
|
t->to = p->from;
|
|
|
|
t->link = datap;
|
|
|
|
datap = t;
|
|
|
|
}
|
|
|
|
p->from.type = D_OREG;
|
|
|
|
p->from.sym = s;
|
|
|
|
p->from.name = D_EXTERN;
|
|
|
|
p->from.offset = 0;
|
|
|
|
}
|
|
|
|
goto casedef;
|
|
|
|
|
|
|
|
case AMOVD:
|
|
|
|
if(skip)
|
|
|
|
goto casedef;
|
|
|
|
|
|
|
|
if(p->from.type == D_FCONST) {
|
|
|
|
/* size sb 18 max */
|
2015-02-17 21:13:35 +00:00
|
|
|
snprint(literal, sizeof literal, "$%lux.%lux",
|
2011-03-30 12:46:40 +00:00
|
|
|
p->from.ieee->l, p->from.ieee->h);
|
|
|
|
s = lookup(literal, 0);
|
|
|
|
if(s->type == 0) {
|
|
|
|
s->type = SBSS;
|
|
|
|
s->value = 8;
|
|
|
|
t = prg();
|
|
|
|
t->as = ADATA;
|
|
|
|
t->line = p->line;
|
|
|
|
t->from.type = D_OREG;
|
|
|
|
t->from.sym = s;
|
|
|
|
t->from.name = D_EXTERN;
|
|
|
|
t->reg = 8;
|
|
|
|
t->to = p->from;
|
|
|
|
t->link = datap;
|
|
|
|
datap = t;
|
|
|
|
}
|
|
|
|
p->from.type = D_OREG;
|
|
|
|
p->from.sym = s;
|
|
|
|
p->from.name = D_EXTERN;
|
|
|
|
p->from.offset = 0;
|
|
|
|
}
|
|
|
|
goto casedef;
|
|
|
|
|
|
|
|
default:
|
|
|
|
casedef:
|
|
|
|
if(skip)
|
|
|
|
nopout(p);
|
|
|
|
|
|
|
|
if(p->to.type == D_BRANCH)
|
|
|
|
p->to.offset += ipc;
|
|
|
|
lastp->link = p;
|
|
|
|
lastp = p;
|
|
|
|
p->pc = pc;
|
|
|
|
pc++;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
goto loop;
|
|
|
|
|
|
|
|
eof:
|
|
|
|
diag("truncated object file: %s", pn);
|
|
|
|
}
|
|
|
|
|
|
|
|
Sym*
|
|
|
|
lookup(char *symb, int v)
|
|
|
|
{
|
|
|
|
Sym *s;
|
|
|
|
char *p;
|
|
|
|
long h;
|
|
|
|
int c, l;
|
|
|
|
|
|
|
|
h = v;
|
|
|
|
for(p=symb; c = *p; p++)
|
|
|
|
h = h+h+h + c;
|
|
|
|
l = (p - symb) + 1;
|
|
|
|
if(h < 0)
|
|
|
|
h = ~h;
|
|
|
|
h %= NHASH;
|
|
|
|
for(s = hash[h]; s != S; s = s->link)
|
|
|
|
if(s->version == v)
|
|
|
|
if(memcmp(s->name, symb, l) == 0)
|
|
|
|
return s;
|
|
|
|
|
2020-05-12 20:04:30 +00:00
|
|
|
s = malloc(sizeof(Sym));
|
2011-03-30 12:46:40 +00:00
|
|
|
s->name = malloc(l);
|
|
|
|
memmove(s->name, symb, l);
|
|
|
|
|
|
|
|
s->link = hash[h];
|
|
|
|
s->type = 0;
|
|
|
|
s->version = v;
|
|
|
|
s->value = 0;
|
2017-03-19 02:05:24 +00:00
|
|
|
s->dupok = 0;
|
2011-03-30 12:46:40 +00:00
|
|
|
hash[h] = s;
|
|
|
|
return s;
|
|
|
|
}
|
|
|
|
|
|
|
|
Prog*
|
|
|
|
prg(void)
|
|
|
|
{
|
2020-05-12 20:04:30 +00:00
|
|
|
Prog *p = malloc(sizeof(Prog));
|
2011-03-30 12:46:40 +00:00
|
|
|
*p = zprg;
|
|
|
|
return p;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
doprof1(void)
|
|
|
|
{
|
|
|
|
Sym *s;
|
|
|
|
long n;
|
|
|
|
Prog *p, *q;
|
|
|
|
|
|
|
|
if(debug['v'])
|
|
|
|
Bprint(&bso, "%5.2f profile 1\n", cputime());
|
|
|
|
Bflush(&bso);
|
|
|
|
s = lookup("__mcount", 0);
|
|
|
|
n = 1;
|
|
|
|
for(p = firstp->link; p != P; p = p->link) {
|
|
|
|
if(p->as == ATEXT) {
|
|
|
|
q = prg();
|
|
|
|
q->line = p->line;
|
|
|
|
q->link = datap;
|
|
|
|
datap = q;
|
|
|
|
q->as = ADATA;
|
|
|
|
q->from.type = D_OREG;
|
|
|
|
q->from.name = D_EXTERN;
|
|
|
|
q->from.offset = n*4;
|
|
|
|
q->from.sym = s;
|
|
|
|
q->reg = 4;
|
|
|
|
q->to = p->from;
|
|
|
|
q->to.type = D_CONST;
|
|
|
|
|
|
|
|
q = prg();
|
|
|
|
q->line = p->line;
|
|
|
|
q->pc = p->pc;
|
|
|
|
q->link = p->link;
|
|
|
|
p->link = q;
|
|
|
|
p = q;
|
|
|
|
p->as = AMOVW;
|
|
|
|
p->from.type = D_OREG;
|
|
|
|
p->from.name = D_EXTERN;
|
|
|
|
p->from.sym = s;
|
|
|
|
p->from.offset = n*4 + 4;
|
|
|
|
p->to.type = D_REG;
|
|
|
|
p->to.reg = REGTMP;
|
|
|
|
|
|
|
|
q = prg();
|
|
|
|
q->line = p->line;
|
|
|
|
q->pc = p->pc;
|
|
|
|
q->link = p->link;
|
|
|
|
p->link = q;
|
|
|
|
p = q;
|
|
|
|
p->as = AADDU;
|
|
|
|
p->from.type = D_CONST;
|
|
|
|
p->from.offset = 1;
|
|
|
|
p->to.type = D_REG;
|
|
|
|
p->to.reg = REGTMP;
|
|
|
|
|
|
|
|
q = prg();
|
|
|
|
q->line = p->line;
|
|
|
|
q->pc = p->pc;
|
|
|
|
q->link = p->link;
|
|
|
|
p->link = q;
|
|
|
|
p = q;
|
|
|
|
p->as = AMOVW;
|
|
|
|
p->from.type = D_REG;
|
|
|
|
p->from.reg = REGTMP;
|
|
|
|
p->to.type = D_OREG;
|
|
|
|
p->to.name = D_EXTERN;
|
|
|
|
p->to.sym = s;
|
|
|
|
p->to.offset = n*4 + 4;
|
|
|
|
|
|
|
|
n += 2;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
q = prg();
|
|
|
|
q->line = 0;
|
|
|
|
q->link = datap;
|
|
|
|
datap = q;
|
|
|
|
|
|
|
|
q->as = ADATA;
|
|
|
|
q->from.type = D_OREG;
|
|
|
|
q->from.name = D_EXTERN;
|
|
|
|
q->from.sym = s;
|
|
|
|
q->reg = 4;
|
|
|
|
q->to.type = D_CONST;
|
|
|
|
q->to.offset = n;
|
|
|
|
|
|
|
|
s->type = SBSS;
|
|
|
|
s->value = n*4;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
doprof2(void)
|
|
|
|
{
|
|
|
|
Sym *s2, *s4;
|
|
|
|
Prog *p, *q, *q2, *ps2, *ps4;
|
|
|
|
|
|
|
|
if(debug['v'])
|
|
|
|
Bprint(&bso, "%5.2f profile 2\n", cputime());
|
|
|
|
Bflush(&bso);
|
|
|
|
|
|
|
|
if(debug['e']){
|
|
|
|
s2 = lookup("_tracein", 0);
|
|
|
|
s4 = lookup("_traceout", 0);
|
|
|
|
}else{
|
|
|
|
s2 = lookup("_profin", 0);
|
|
|
|
s4 = lookup("_profout", 0);
|
|
|
|
}
|
|
|
|
if(s2->type != STEXT || s4->type != STEXT) {
|
|
|
|
if(debug['e'])
|
|
|
|
diag("_tracein/_traceout not defined %d %d", s2->type, s4->type);
|
|
|
|
else
|
|
|
|
diag("_profin/_profout not defined");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
ps2 = P;
|
|
|
|
ps4 = P;
|
|
|
|
for(p = firstp; p != P; p = p->link) {
|
|
|
|
if(p->as == ATEXT) {
|
|
|
|
if(p->from.sym == s2) {
|
|
|
|
ps2 = p;
|
|
|
|
p->reg = 1;
|
|
|
|
}
|
|
|
|
if(p->from.sym == s4) {
|
|
|
|
ps4 = p;
|
|
|
|
p->reg = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for(p = firstp; p != P; p = p->link) {
|
|
|
|
if(p->as == ATEXT) {
|
|
|
|
if(p->reg & NOPROF) {
|
|
|
|
for(;;) {
|
|
|
|
q = p->link;
|
|
|
|
if(q == P)
|
|
|
|
break;
|
|
|
|
if(q->as == ATEXT)
|
|
|
|
break;
|
|
|
|
p = q;
|
|
|
|
}
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* JAL profin, R2
|
|
|
|
*/
|
|
|
|
q = prg();
|
|
|
|
q->line = p->line;
|
|
|
|
q->pc = p->pc;
|
|
|
|
q->link = p->link;
|
|
|
|
if(debug['e']){ /* embedded tracing */
|
|
|
|
q2 = prg();
|
|
|
|
p->link = q2;
|
|
|
|
q2->link = q;
|
|
|
|
|
|
|
|
q2->line = p->line;
|
|
|
|
q2->pc = p->pc;
|
|
|
|
|
|
|
|
q2->as = AJMP;
|
|
|
|
q2->to.type = D_BRANCH;
|
|
|
|
q2->to.sym = p->to.sym;
|
|
|
|
q2->cond = q->link;
|
|
|
|
}else
|
|
|
|
p->link = q;
|
|
|
|
p = q;
|
|
|
|
p->as = AJAL;
|
|
|
|
p->to.type = D_BRANCH;
|
|
|
|
p->cond = ps2;
|
|
|
|
p->to.sym = s2;
|
|
|
|
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if(p->as == ARET) {
|
|
|
|
/*
|
|
|
|
* RET (default)
|
|
|
|
*/
|
|
|
|
if(debug['e']){ /* embedded tracing */
|
|
|
|
q = prg();
|
|
|
|
q->line = p->line;
|
|
|
|
q->pc = p->pc;
|
|
|
|
q->link = p->link;
|
|
|
|
p->link = q;
|
|
|
|
p = q;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* RET
|
|
|
|
*/
|
|
|
|
q = prg();
|
|
|
|
q->as = ARET;
|
|
|
|
q->from = p->from;
|
|
|
|
q->to = p->to;
|
|
|
|
q->link = p->link;
|
|
|
|
p->link = q;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* JAL profout
|
|
|
|
*/
|
|
|
|
p->as = AJAL;
|
|
|
|
p->from = zprg.from;
|
|
|
|
p->to = zprg.to;
|
|
|
|
p->to.type = D_BRANCH;
|
|
|
|
p->cond = ps4;
|
|
|
|
p->to.sym = s4;
|
|
|
|
|
|
|
|
p = q;
|
|
|
|
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
nuxiinit(void)
|
|
|
|
{
|
|
|
|
int i, c;
|
|
|
|
|
|
|
|
for(i=0; i<4; i++)
|
|
|
|
if (!little) { /* normal big-endian case */
|
|
|
|
c = find1(0x01020304L, i+1);
|
|
|
|
if(i >= 2)
|
|
|
|
inuxi2[i-2] = c;
|
|
|
|
if(i >= 3)
|
|
|
|
inuxi1[i-3] = c;
|
|
|
|
inuxi4[i] = c;
|
|
|
|
fnuxi8[i] = c+4;
|
|
|
|
fnuxi8[i+4] = c;
|
|
|
|
} else { /* oddball little-endian case */
|
|
|
|
c = find1(0x04030201L, i+1);
|
|
|
|
if(i < 2)
|
|
|
|
inuxi2[i] = c;
|
|
|
|
if(i < 1)
|
|
|
|
inuxi1[i] = c;
|
|
|
|
inuxi4[i] = c;
|
|
|
|
fnuxi4[i] = c;
|
|
|
|
fnuxi8[i] = c;
|
|
|
|
fnuxi8[i+4] = c+4;
|
|
|
|
}
|
|
|
|
if(debug['v']) {
|
|
|
|
Bprint(&bso, "inuxi = ");
|
|
|
|
for(i=0; i<1; i++)
|
|
|
|
Bprint(&bso, "%d", inuxi1[i]);
|
|
|
|
Bprint(&bso, " ");
|
|
|
|
for(i=0; i<2; i++)
|
|
|
|
Bprint(&bso, "%d", inuxi2[i]);
|
|
|
|
Bprint(&bso, " ");
|
|
|
|
for(i=0; i<4; i++)
|
|
|
|
Bprint(&bso, "%d", inuxi4[i]);
|
|
|
|
Bprint(&bso, "\nfnuxi = ");
|
|
|
|
for(i=0; i<8; i++)
|
|
|
|
Bprint(&bso, "%d", fnuxi8[i]);
|
|
|
|
Bprint(&bso, "\n");
|
|
|
|
}
|
|
|
|
Bflush(&bso);
|
|
|
|
}
|
|
|
|
|
|
|
|
find1(long l, int c)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
p = (char*)&l;
|
|
|
|
for(i=0; i<4; i++)
|
|
|
|
if(*p++ == c)
|
|
|
|
return i;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
long
|
|
|
|
ieeedtof(Ieee *ieeep)
|
|
|
|
{
|
|
|
|
int exp;
|
|
|
|
long v;
|
|
|
|
|
|
|
|
if(ieeep->h == 0)
|
|
|
|
return 0;
|
|
|
|
exp = (ieeep->h>>20) & ((1L<<11)-1L);
|
|
|
|
exp -= (1L<<10) - 2L;
|
|
|
|
v = (ieeep->h & 0xfffffL) << 3;
|
|
|
|
v |= (ieeep->l >> 29) & 0x7L;
|
|
|
|
if((ieeep->l >> 28) & 1) {
|
|
|
|
v++;
|
|
|
|
if(v & 0x800000L) {
|
|
|
|
v = (v & 0x7fffffL) >> 1;
|
|
|
|
exp++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if(exp <= -126 || exp >= 130)
|
|
|
|
diag("double fp to single fp overflow");
|
|
|
|
v |= ((exp + 126) & 0xffL) << 23;
|
|
|
|
v |= ieeep->h & 0x80000000L;
|
|
|
|
return v;
|
|
|
|
}
|
|
|
|
|
|
|
|
double
|
|
|
|
ieeedtod(Ieee *ieeep)
|
|
|
|
{
|
|
|
|
Ieee e;
|
|
|
|
double fr;
|
|
|
|
int exp;
|
|
|
|
|
|
|
|
if(ieeep->h & (1L<<31)) {
|
|
|
|
e.h = ieeep->h & ~(1L<<31);
|
|
|
|
e.l = ieeep->l;
|
|
|
|
return -ieeedtod(&e);
|
|
|
|
}
|
|
|
|
if(ieeep->l == 0 && ieeep->h == 0)
|
|
|
|
return 0;
|
|
|
|
fr = ieeep->l & ((1L<<16)-1L);
|
|
|
|
fr /= 1L<<16;
|
|
|
|
fr += (ieeep->l>>16) & ((1L<<16)-1L);
|
|
|
|
fr /= 1L<<16;
|
|
|
|
fr += (ieeep->h & (1L<<20)-1L) | (1L<<20);
|
|
|
|
fr /= 1L<<21;
|
|
|
|
exp = (ieeep->h>>20) & ((1L<<11)-1L);
|
|
|
|
exp -= (1L<<10) - 2L;
|
|
|
|
return ldexp(fr, exp);
|
|
|
|
}
|