12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319 |
- #include "l.h"
- #include <ar.h>
- #ifndef DEFAULT
- #define DEFAULT '9'
- #endif
- char *noname = "<none>";
- char symname[] = SYMDEF;
- char thechar = '7';
- char *thestring = "alpha";
- /*
- * -H0 -T0x12000004C -D0x140000000 is abbrev unix
- * -H1 -T0x20000000 -R4 is bootp() format
- * -H2 -T8224 -R8192 is plan9 format
- */
- void
- main(int argc, char *argv[])
- {
- int c;
- char *a;
- Binit(&bso, 1, OWRITE);
- cout = -1;
- listinit();
- outfile = 0;
- nerrors = 0;
- curtext = P;
- HEADTYPE = -1;
- INITTEXT = -1;
- INITDAT = -1;
- INITRND = -1;
- INITENTRY = 0;
- ARGBEGIN {
- default:
- c = ARGC();
- if(c >= 0 && c < sizeof(debug))
- debug[c]++;
- break;
- case 'o':
- outfile = ARGF();
- break;
- case 'E':
- a = ARGF();
- if(a)
- INITENTRY = a;
- break;
- case 'T':
- a = ARGF();
- if(a)
- INITTEXT = atolwhex(a);
- break;
- case 'D':
- a = ARGF();
- if(a)
- INITDAT = atolwhex(a);
- break;
- case 'R':
- a = ARGF();
- if(a)
- INITRND = atolwhex(a);
- break;
- case 'H':
- a = ARGF();
- if(a)
- HEADTYPE = atolwhex(a);
- /* do something about setting INITTEXT */
- break;
- } ARGEND
- USED(argc);
- if(*argv == 0) {
- diag("usage: 7l [-options] objects");
- errorexit();
- }
- if(!debug['9'] && !debug['B'] && !debug['U'])
- debug[DEFAULT] = 1;
- if(HEADTYPE == -1) {
- if(debug['U'])
- HEADTYPE = 0;
- if(debug['B'])
- HEADTYPE = 1;
- if(debug['9'])
- HEADTYPE = 2;
- }
- switch(HEADTYPE) {
- default:
- diag("unknown -H option");
- errorexit();
- case 0: /* unix simple */
- HEADR = 32L+80L;
- if(INITTEXT == -1)
- INITTEXT = 0x120000070LL; /* BUG */
- if(INITDAT == -1)
- INITDAT = 0x140000000LL; /* BUG */
- if(INITRND == -1)
- INITRND = 0;
- break;
- case 1: /* boot */
- HEADR = 32L+84L;
- if(INITTEXT == -1)
- INITTEXT = 0x20000074L;
- if(INITDAT == -1)
- INITDAT = 0;
- if(INITRND == -1)
- INITRND = 8;
- break;
- case 2: /* plan 9 */
- HEADR = 32L;
- if(INITTEXT == -1)
- INITTEXT = 8224;
- if(INITDAT == -1)
- INITDAT = 0;
- if(INITRND == -1)
- INITRND = 8192;
- break;
- case 3: /* ``headerless'' tftp boot -- uses branch as magic */
- HEADR = 32L;
- if(INITTEXT == -1)
- INITTEXT = 0x20000020L;
- if(INITDAT == -1)
- INITDAT = 0;
- if(INITRND == -1)
- INITRND = 8;
- break;
- }
- if(INITDAT != 0 && INITRND != 0)
- print("warning: -D0x%lux is ignored because of -R0x%lux\n",
- INITDAT, INITRND);
- if(debug['v'])
- Bprint(&bso, "HEADER = -H0x%d -T0x%lux -D0x%lux -R0x%lux\n",
- HEADTYPE, INITTEXT, INITDAT, INITRND);
- Bflush(&bso);
- zprg.as = AGOK;
- zprg.reg = NREG;
- zprg.from.name = D_NONE;
- zprg.from.type = D_NONE;
- zprg.from.reg = NREG;
- zprg.to = zprg.from;
- buildop();
- histgen = 0;
- textp = P;
- datap = P;
- pc = 0;
- dtype = 4;
- if(outfile == 0)
- outfile = "7.out";
- cout = create(outfile, 1, 0775);
- if(cout < 0) {
- diag("%s: cannot create", outfile);
- errorexit();
- }
- nuxiinit();
- version = 0;
- cbp = buf.cbuf;
- cbc = sizeof(buf.cbuf);
- firstp = prg();
- lastp = firstp;
- if(INITENTRY == 0) {
- INITENTRY = "_main";
- if(debug['p'])
- INITENTRY = "_mainp";
- if(!debug['l'])
- lookup(INITENTRY, 0)->type = SXREF;
- } else
- lookup(INITENTRY, 0)->type = SXREF;
- while(*argv)
- objfile(*argv++);
- if(!debug['l'])
- loadlib();
- firstp = firstp->link;
- if(firstp == P)
- goto out;
- patch();
- if(debug['p'])
- if(debug['1'])
- doprof1();
- else
- doprof2();
- follow();
- if(firstp == P)
- goto out;
- noops();
- dodata(); /* is before follow() on other arch */
- span();
- asmb();
- undef();
- out:
- if(debug['v']) {
- Bprint(&bso, "%5.2f cpu time\n", cputime());
- Bprint(&bso, "%ld memory used\n", thunk);
- Bprint(&bso, "%d sizeof adr\n", sizeof(Adr));
- Bprint(&bso, "%d sizeof prog\n", sizeof(Prog));
- }
- Bflush(&bso);
- errorexit();
- }
- void
- loadlib(void)
- {
- int i;
- long h;
- Sym *s;
- loop:
- xrefresolv = 0;
- for(i=0; i<libraryp; i++) {
- if(debug['v'])
- Bprint(&bso, "%5.2f autolib: %s\n", cputime(), library[i]);
- objfile(library[i]);
- }
- if(xrefresolv)
- for(h=0; h<nelem(hash); h++)
- for(s = hash[h]; s != S; s = s->link)
- if(s->type == SXREF)
- goto loop;
- }
- void
- errorexit(void)
- {
- Bflush(&bso);
- if(nerrors) {
- if(cout >= 0)
- remove(outfile);
- exits("error");
- }
- exits(0);
- }
- void
- objfile(char *file)
- {
- long off, esym, cnt, l;
- int f, work;
- Sym *s;
- char magbuf[SARMAG];
- char name[100], pname[150];
- struct ar_hdr arhdr;
- char *e, *start, *stop;
- if(file[0] == '-' && file[1] == 'l') {
- if(debug['9'])
- sprint(name, "/%s/lib/lib", thestring);
- else
- sprint(name, "/usr/%clib/lib", thechar);
- strcat(name, file+2);
- strcat(name, ".a");
- file = name;
- }
- if(debug['v'])
- Bprint(&bso, "%5.2f ldobj: %s\n", cputime(), file);
- Bflush(&bso);
- f = open(file, 0);
- if(f < 0) {
- diag("cannot open file: %s", file);
- errorexit();
- }
- l = read(f, magbuf, SARMAG);
- if(l != SARMAG || strncmp(magbuf, ARMAG, SARMAG)){
- /* load it as a regular file */
- l = seek(f, 0L, 2);
- seek(f, 0L, 0);
- ldobj(f, l, file);
- close(f);
- return;
- }
- if(debug['v'])
- Bprint(&bso, "%5.2f ldlib: %s\n", cputime(), file);
- l = read(f, &arhdr, SAR_HDR);
- if(l != SAR_HDR) {
- diag("%s: short read on archive file symbol header", file);
- goto out;
- }
- if(strncmp(arhdr.name, symname, strlen(symname))) {
- diag("%s: first entry not symbol header", file);
- goto out;
- }
- esym = SARMAG + SAR_HDR + atolwhex(arhdr.size);
- off = SARMAG + SAR_HDR;
- /*
- * just bang the whole symbol file into memory
- */
- seek(f, off, 0);
- cnt = esym - off;
- start = malloc(cnt + 10);
- cnt = read(f, start, cnt);
- if(cnt <= 0){
- close(f);
- return;
- }
- stop = &start[cnt];
- memset(stop, 0, 10);
- work = 1;
- while(work){
- if(debug['v'])
- Bprint(&bso, "%5.2f library pass: %s\n", cputime(), file);
- Bflush(&bso);
- work = 0;
- for(e = start; e < stop; e = strchr(e+5, 0) + 1) {
- s = lookup(e+5, 0);
- if(s->type != SXREF)
- continue;
- sprint(pname, "%s(%s)", file, s->name);
- if(debug['v'])
- Bprint(&bso, "%5.2f library: %s\n", cputime(), pname);
- Bflush(&bso);
- l = e[1] & 0xff;
- l |= (e[2] & 0xff) << 8;
- l |= (e[3] & 0xff) << 16;
- l |= (e[4] & 0xff) << 24;
- seek(f, l, 0);
- l = read(f, &arhdr, SAR_HDR);
- if(l != SAR_HDR)
- goto bad;
- if(strncmp(arhdr.fmag, ARFMAG, sizeof(arhdr.fmag)))
- goto bad;
- l = atolwhex(arhdr.size);
- ldobj(f, l, pname);
- if(s->type == SXREF) {
- diag("%s: failed to load: %s", file, s->name);
- errorexit();
- }
- work = 1;
- xrefresolv = 1;
- }
- }
- return;
- bad:
- diag("%s: bad or out of date archive", file);
- out:
- close(f);
- }
- int
- zaddr(uchar *p, Adr *a, Sym *h[])
- {
- int i, c;
- vlong 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[p[2]];
- 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_PREG:
- case D_FCREG:
- case D_PCC:
- break;
- case D_BRANCH:
- case D_OREG:
- case D_CONST:
- a->offset = (uvlong)p[4] | ((uvlong)p[5]<<8L) |
- ((uvlong) p[6]<<16L) | ((uvlong) p[7]<<24L) |
- ((uvlong) p[8]<<32L) | ((uvlong) p[9]<<40L) |
- ((uvlong) p[10]<<48L) | ((uvlong) p[11]<<56L);
- c += 8;
- break;
- case D_SCONST:
- while(nhunk < NSNAME)
- gethunk();
- a->sval = (char*)hunk;
- nhunk -= NSNAME;
- hunk += NSNAME;
- memmove(a->sval, p+4, NSNAME);
- c += NSNAME;
- break;
- case D_FCONST:
- while(nhunk < sizeof(Ieee))
- gethunk();
- a->ieee = (Ieee*)hunk;
- nhunk -= sizeof(Ieee);
- hunk += sizeof(Ieee);
- 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->sym == s)
- if(u->type == i) {
- if(u->offset > l)
- u->offset = l;
- return c;
- }
- while(nhunk < sizeof(Auto))
- gethunk();
- u = (Auto*)hunk;
- nhunk -= sizeof(Auto);
- hunk += sizeof(Auto);
- u->link = curauto;
- curauto = u;
- u->sym = s;
- u->offset = 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] == '/') {
- sprint(name, "");
- i = 1;
- } else
- if(histfrog[0]->name[1] == '.') {
- sprint(name, ".");
- i = 0;
- } else {
- if(debug['9'])
- sprint(name, "/%s/lib", thestring);
- else
- sprint(name, "/usr/%clib", thechar);
- 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->sym = s;
- u->type = type;
- u->offset = 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 .7 file\n");
- errorexit();
- }
- if(o == ANAME) {
- 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;
- }
- if(nhunk < sizeof(Prog))
- gethunk();
- p = (Prog*)hunk;
- nhunk -= sizeof(Prog);
- hunk += sizeof(Prog);
- 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_PREG); /* '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();
- }
- 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;
- if (autosize & 4)
- autosize += 4;
- p->to.offset = autosize;
- autosize += 8;
- 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 AMOVS:
- if(skip)
- goto casedef;
- if(p->from.type == D_FCONST) {
- /* size sb 9 max */
- sprint(literal, "$%lux", ieeedtof(p->from.ieee));
- s = lookup(literal, 0);
- if(s->type == 0) {
- s->type = SBSS;
- s->value = 4;
- t = prg();
- t->as = ADATA;
- t->line = p->line;
- t->from.type = D_OREG;
- t->from.sym = s;
- t->from.name = D_EXTERN;
- t->reg = 4;
- t->to = p->from;
- t->link = datap;
- datap = t;
- }
- p->from.type = D_OREG;
- p->from.sym = s;
- p->from.name = D_EXTERN;
- p->from.offset = 0;
- }
- goto casedef;
- case AMOVT:
- if(skip)
- goto casedef;
- if(p->from.type == D_FCONST) {
- /* size sb 18 max */
- sprint(literal, "$%lux.%lux",
- 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;
- case AMOVQ:
- if(skip)
- goto casedef;
- if (p->from.type == D_FREG || p->to.type == D_FREG)
- p->as = AMOVT; /* stupid compiler optimiser kkludge */
- case AMOVL:
- case AMOVW:
- case AMOVB:
- /* BOTCH */
- if (p->from.type == D_CONST)
- if (p->from.offset == 0LL && p->from.name == D_NONE) {
- p->from.type = D_REG;
- p->from.reg = REGZERO;
- }
- 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 c0, l;
- h = v;
- for(p=symb; c0 = *p; p++)
- h = h+h+h + c0;
- 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;
- while(nhunk < sizeof(Sym))
- gethunk();
- s = (Sym*)hunk;
- nhunk -= sizeof(Sym);
- hunk += sizeof(Sym);
- s->name = malloc(l);
- memmove(s->name, symb, l);
- s->link = hash[h];
- s->type = 0;
- s->version = v;
- s->value = 0;
- hash[h] = s;
- return s;
- }
- Prog*
- prg(void)
- {
- Prog *p;
- while(nhunk < sizeof(Prog))
- gethunk();
- p = (Prog*)hunk;
- nhunk -= sizeof(Prog);
- hunk += sizeof(Prog);
- *p = zprg;
- return p;
- }
- void
- gethunk(void)
- {
- char *h;
- long nh;
- nh = NHUNK;
- if(thunk >= 5L*NHUNK) {
- nh = 5L*NHUNK;
- if(thunk >= 25L*NHUNK)
- nh = 25L*NHUNK;
- }
- h = mysbrk(nh);
- if(h == (char*)-1) {
- diag("out of memory");
- errorexit();
- }
- hunk = h;
- nhunk = nh;
- thunk += nh;
- }
- 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 = AMOVL;
- 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 = AADDQ;
- 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 = AMOVL;
- 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, *ps2, *ps4;
- if(debug['v'])
- Bprint(&bso, "%5.2f profile 2\n", cputime());
- Bflush(&bso);
- s2 = lookup("_profin", 0);
- s4 = lookup("_profout", 0);
- if(s2->type != STEXT || s4->type != STEXT) {
- 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 != NREG) {
- for(;;) {
- q = p->link;
- if(q == P)
- break;
- if(q->as == ATEXT)
- break;
- p = q;
- }
- continue;
- }
- /*
- * JSR profin, R2
- */
- q = prg();
- q->line = p->line;
- q->pc = p->pc;
- q->link = p->link;
- p->link = q;
- p = q;
- p->as = AJSR;
- p->to.type = D_BRANCH;
- p->cond = ps2;
- p->to.sym = s2;
- continue;
- }
- if(p->as == ARET) {
- /*
- * JSR profout
- */
- p->as = AJSR;
- p->to.type = D_BRANCH;
- p->cond = ps4;
- p->to.sym = s4;
-
- /*
- * RET
- */
- q = prg();
- q->line = p->line;
- q->pc = p->pc;
- q->link = p->link;
- p->link = q;
- p = q;
- p->as = ARET;
- continue;
- }
- }
- }
- void
- nuxiinit(void)
- {
- int i, c;
- for(i=0; i<4; i++) {
- c = find1(0x04030201L, i+1);
- if(i <= 4)
- inuxi4[i] = c;
- if(i <= 2)
- inuxi2[i] = c;
- if(i <= 1)
- inuxi1[i] = c;
- }
- for (i = 0; i < 4; i++) {
- c = find1(0x04030201L, i+1);
- fnuxi8[i] = c;
- fnuxi8[i+4] = c + sizeof(long);
- }
- 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, " ");
- 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 *ieee)
- {
- int exp;
- long v;
- if(ieee->h == 0)
- return 0;
- exp = (ieee->h>>20) & ((1L<<11)-1L);
- exp -= (1L<<10) - 2L;
- v = (ieee->h & 0xfffffL) << 3;
- v |= (ieee->l >> 29) & 0x7L;
- if((ieee->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 |= ieee->h & 0x80000000L;
- return v;
- }
- double
- ieeedtod(Ieee *ieee)
- {
- Ieee e;
- double fr;
- int exp;
- if(ieee->h & (1L<<31)) {
- e.h = ieee->h & ~(1L<<31);
- e.l = ieee->l;
- return -ieeedtod(&e);
- }
- if(ieee->l == 0 && ieee->h == 0)
- return 0;
- fr = ieee->l & ((1L<<16)-1L);
- fr /= 1L<<16;
- fr += (ieee->l>>16) & ((1L<<16)-1L);
- fr /= 1L<<16;
- fr += (ieee->h & (1L<<20)-1L) | (1L<<20);
- fr /= 1L<<21;
- exp = (ieee->h>>20) & ((1L<<11)-1L);
- exp -= (1L<<10) - 2L;
- return ldexp(fr, exp);
- }
|