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- #include "l.h"
- long OFFSET;
- static Prog *PP;
- long
- entryvalue(void)
- {
- char *a;
- Sym *s;
- a = INITENTRY;
- if(*a >= '0' && *a <= '9')
- return atolwhex(a);
- s = lookup(a, 0);
- if(s->type == 0)
- return INITTEXT;
- switch(s->type) {
- case STEXT:
- case SLEAF:
- break;
- case SDATA:
- if(dlm)
- return s->value+INITDAT;
- default:
- diag("entry not text: %s", s->name);
- }
- return s->value;
- }
- void
- asmb(void)
- {
- Prog *p;
- long t, etext;
- Optab *o;
- if(debug['v'])
- Bprint(&bso, "%5.2f asm\n", cputime());
- Bflush(&bso);
- OFFSET = HEADR;
- seek(cout, OFFSET, 0);
- pc = INITTEXT;
- for(p = firstp; p != P; p = p->link) {
- if(p->as == ATEXT) {
- curtext = p;
- autosize = p->to.offset + 4;
- }
- if(p->pc != pc) {
- diag("phase error %lux sb %lux",
- p->pc, pc);
- if(!debug['a'])
- prasm(curp);
- pc = p->pc;
- }
- curp = p;
- o = oplook(p); /* could probably avoid this call */
- asmout(p, o);
- pc += o->size;
- }
- if(debug['a'])
- Bprint(&bso, "\n");
- Bflush(&bso);
- cflush();
- /* output strings in text segment */
- etext = INITTEXT + textsize;
- for(t = pc; t < etext; t += sizeof(buf)-100) {
- if(etext-t > sizeof(buf)-100)
- datblk(t, sizeof(buf)-100, 1);
- else
- datblk(t, etext-t, 1);
- }
- curtext = P;
- switch(HEADTYPE) {
- case 0:
- case 1:
- case 2:
- case 5:
- OFFSET = HEADR+textsize;
- seek(cout, OFFSET, 0);
- break;
- case 3:
- OFFSET = rnd(HEADR+textsize, 4096);
- seek(cout, OFFSET, 0);
- break;
- }
- if(dlm){
- char buf[8];
- write(cout, buf, INITDAT-textsize);
- textsize = INITDAT;
- }
- for(t = 0; t < datsize; t += sizeof(buf)-100) {
- if(datsize-t > sizeof(buf)-100)
- datblk(t, sizeof(buf)-100, 0);
- else
- datblk(t, datsize-t, 0);
- }
- symsize = 0;
- lcsize = 0;
- if(!debug['s']) {
- if(debug['v'])
- Bprint(&bso, "%5.2f sym\n", cputime());
- Bflush(&bso);
- switch(HEADTYPE) {
- case 0:
- case 1:
- case 4:
- case 5:
- debug['s'] = 1;
- break;
- case 2:
- OFFSET = HEADR+textsize+datsize;
- seek(cout, OFFSET, 0);
- break;
- case 3:
- OFFSET += rnd(datsize, 4096);
- seek(cout, OFFSET, 0);
- break;
- }
- if(!debug['s'])
- asmsym();
- if(debug['v'])
- Bprint(&bso, "%5.2f pc\n", cputime());
- Bflush(&bso);
- if(!debug['s'])
- asmlc();
- if(dlm)
- asmdyn();
- cflush();
- }
- else if(dlm){
- seek(cout, HEADR+textsize+datsize, 0);
- asmdyn();
- cflush();
- }
- if(debug['v'])
- Bprint(&bso, "%5.2f header\n", cputime());
- Bflush(&bso);
- OFFSET = 0;
- seek(cout, OFFSET, 0);
- switch(HEADTYPE) {
- case 0: /* no header */
- break;
- case 1: /* aif for risc os */
- lputl(0xe1a00000); /* NOP - decompress code */
- lputl(0xe1a00000); /* NOP - relocation code */
- lputl(0xeb000000 + 12); /* BL - zero init code */
- lputl(0xeb000000 +
- (entryvalue()
- - INITTEXT
- + HEADR
- - 12
- - 8) / 4); /* BL - entry code */
- lputl(0xef000011); /* SWI - exit code */
- lputl(textsize+HEADR); /* text size */
- lputl(datsize); /* data size */
- lputl(0); /* sym size */
- lputl(bsssize); /* bss size */
- lputl(0); /* sym type */
- lputl(INITTEXT-HEADR); /* text addr */
- lputl(0); /* workspace - ignored */
- lputl(32); /* addr mode / data addr flag */
- lputl(0); /* data addr */
- for(t=0; t<2; t++)
- lputl(0); /* reserved */
- for(t=0; t<15; t++)
- lputl(0xe1a00000); /* NOP - zero init code */
- lputl(0xe1a0f00e); /* B (R14) - zero init return */
- break;
- case 2: /* plan 9 */
- if(dlm)
- lput(0x80000000|0x647); /* magic */
- else
- lput(0x647); /* magic */
- lput(textsize); /* sizes */
- lput(datsize);
- lput(bsssize);
- lput(symsize); /* nsyms */
- lput(entryvalue()); /* va of entry */
- lput(0L);
- lput(lcsize);
- break;
- case 3: /* boot for NetBSD */
- lput((143<<16)|0413); /* magic */
- lputl(rnd(HEADR+textsize, 4096));
- lputl(rnd(datsize, 4096));
- lputl(bsssize);
- lputl(symsize); /* nsyms */
- lputl(entryvalue()); /* va of entry */
- lputl(0L);
- lputl(0L);
- break;
- case 4: /* boot for IXP1200 */
- break;
- case 5: /* boot for ipaq */
- lputl(0xe3300000); /* nop */
- lputl(0xe3300000); /* nop */
- lputl(0xe3300000); /* nop */
- lputl(0xe3300000); /* nop */
- break;
- }
- cflush();
- }
- void
- strnput(char *s, int n)
- {
- for(; *s; s++){
- cput(*s);
- n--;
- }
- for(; n > 0; n--)
- cput(0);
- }
- void
- cput(int c)
- {
- cbp[0] = c;
- cbp++;
- cbc--;
- if(cbc <= 0)
- cflush();
- }
- void
- wput(long l)
- {
- cbp[0] = l>>8;
- cbp[1] = l;
- cbp += 2;
- cbc -= 2;
- if(cbc <= 0)
- cflush();
- }
- void
- lput(long l)
- {
- cbp[0] = l>>24;
- cbp[1] = l>>16;
- cbp[2] = l>>8;
- cbp[3] = l;
- cbp += 4;
- cbc -= 4;
- if(cbc <= 0)
- cflush();
- }
- void
- lputl(long l)
- {
- cbp[3] = l>>24;
- cbp[2] = l>>16;
- cbp[1] = l>>8;
- cbp[0] = l;
- cbp += 4;
- cbc -= 4;
- if(cbc <= 0)
- cflush();
- }
- void
- cflush(void)
- {
- int n;
- n = sizeof(buf.cbuf) - cbc;
- if(n)
- write(cout, buf.cbuf, n);
- cbp = buf.cbuf;
- cbc = sizeof(buf.cbuf);
- }
- void
- nopstat(char *f, Count *c)
- {
- if(c->outof)
- Bprint(&bso, "%s delay %ld/%ld (%.2f)\n", f,
- c->outof - c->count, c->outof,
- (double)(c->outof - c->count)/c->outof);
- }
- void
- asmsym(void)
- {
- Prog *p;
- Auto *a;
- Sym *s;
- int h;
- s = lookup("etext", 0);
- if(s->type == STEXT)
- putsymb(s->name, 'T', s->value, s->version);
- for(h=0; h<NHASH; h++)
- for(s=hash[h]; s!=S; s=s->link)
- switch(s->type) {
- case SCONST:
- putsymb(s->name, 'D', s->value, s->version);
- continue;
- case SDATA:
- putsymb(s->name, 'D', s->value+INITDAT, s->version);
- continue;
- case SBSS:
- putsymb(s->name, 'B', s->value+INITDAT, s->version);
- continue;
- case SSTRING:
- putsymb(s->name, 'T', s->value, s->version);
- continue;
- case SFILE:
- putsymb(s->name, 'f', s->value, s->version);
- continue;
- }
- for(p=textp; p!=P; p=p->cond) {
- s = p->from.sym;
- if(s->type != STEXT && s->type != SLEAF)
- continue;
- /* filenames first */
- for(a=p->to.autom; a; a=a->link)
- if(a->type == D_FILE)
- putsymb(a->asym->name, 'z', a->aoffset, 0);
- else
- if(a->type == D_FILE1)
- putsymb(a->asym->name, 'Z', a->aoffset, 0);
- if(s->type == STEXT)
- putsymb(s->name, 'T', s->value, s->version);
- else
- putsymb(s->name, 'L', s->value, s->version);
- /* frame, auto and param after */
- putsymb(".frame", 'm', p->to.offset+4, 0);
- for(a=p->to.autom; a; a=a->link)
- if(a->type == D_AUTO)
- putsymb(a->asym->name, 'a', -a->aoffset, 0);
- else
- if(a->type == D_PARAM)
- putsymb(a->asym->name, 'p', a->aoffset, 0);
- }
- if(debug['v'] || debug['n'])
- Bprint(&bso, "symsize = %lud\n", symsize);
- Bflush(&bso);
- }
- void
- putsymb(char *s, int t, long v, int ver)
- {
- int i, f;
- if(t == 'f')
- s++;
- lput(v);
- if(ver)
- t += 'a' - 'A';
- cput(t+0x80); /* 0x80 is variable length */
- if(t == 'Z' || t == 'z') {
- cput(s[0]);
- for(i=1; s[i] != 0 || s[i+1] != 0; i += 2) {
- cput(s[i]);
- cput(s[i+1]);
- }
- cput(0);
- cput(0);
- i++;
- }
- else {
- for(i=0; s[i]; i++)
- cput(s[i]);
- cput(0);
- }
- symsize += 4 + 1 + i + 1;
- if(debug['n']) {
- if(t == 'z' || t == 'Z') {
- Bprint(&bso, "%c %.8lux ", t, v);
- for(i=1; s[i] != 0 || s[i+1] != 0; i+=2) {
- f = ((s[i]&0xff) << 8) | (s[i+1]&0xff);
- Bprint(&bso, "/%x", f);
- }
- Bprint(&bso, "\n");
- return;
- }
- if(ver)
- Bprint(&bso, "%c %.8lux %s<%d>\n", t, v, s, ver);
- else
- Bprint(&bso, "%c %.8lux %s\n", t, v, s);
- }
- }
- #define MINLC 4
- void
- asmlc(void)
- {
- long oldpc, oldlc;
- Prog *p;
- long v, s;
- oldpc = INITTEXT;
- oldlc = 0;
- for(p = firstp; p != P; p = p->link) {
- if(p->line == oldlc || p->as == ATEXT || p->as == ANOP) {
- if(p->as == ATEXT)
- curtext = p;
- if(debug['L'])
- Bprint(&bso, "%6lux %P\n",
- p->pc, p);
- continue;
- }
- if(debug['L'])
- Bprint(&bso, "\t\t%6ld", lcsize);
- v = (p->pc - oldpc) / MINLC;
- while(v) {
- s = 127;
- if(v < 127)
- s = v;
- cput(s+128); /* 129-255 +pc */
- if(debug['L'])
- Bprint(&bso, " pc+%ld*%d(%ld)", s, MINLC, s+128);
- v -= s;
- lcsize++;
- }
- s = p->line - oldlc;
- oldlc = p->line;
- oldpc = p->pc + MINLC;
- if(s > 64 || s < -64) {
- cput(0); /* 0 vv +lc */
- cput(s>>24);
- cput(s>>16);
- cput(s>>8);
- cput(s);
- if(debug['L']) {
- if(s > 0)
- Bprint(&bso, " lc+%ld(%d,%ld)\n",
- s, 0, s);
- else
- Bprint(&bso, " lc%ld(%d,%ld)\n",
- s, 0, s);
- Bprint(&bso, "%6lux %P\n",
- p->pc, p);
- }
- lcsize += 5;
- continue;
- }
- if(s > 0) {
- cput(0+s); /* 1-64 +lc */
- if(debug['L']) {
- Bprint(&bso, " lc+%ld(%ld)\n", s, 0+s);
- Bprint(&bso, "%6lux %P\n",
- p->pc, p);
- }
- } else {
- cput(64-s); /* 65-128 -lc */
- if(debug['L']) {
- Bprint(&bso, " lc%ld(%ld)\n", s, 64-s);
- Bprint(&bso, "%6lux %P\n",
- p->pc, p);
- }
- }
- lcsize++;
- }
- while(lcsize & 1) {
- s = 129;
- cput(s);
- lcsize++;
- }
- if(debug['v'] || debug['L'])
- Bprint(&bso, "lcsize = %ld\n", lcsize);
- Bflush(&bso);
- }
- void
- datblk(long s, long n, int str)
- {
- Sym *v;
- Prog *p;
- char *cast;
- long a, l, fl, j, d;
- int i, c;
- memset(buf.dbuf, 0, n+100);
- for(p = datap; p != P; p = p->link) {
- if(str != (p->from.sym->type == SSTRING))
- continue;
- curp = p;
- a = p->from.sym->value + p->from.offset;
- l = a - s;
- c = p->reg;
- i = 0;
- if(l < 0) {
- if(l+c <= 0)
- continue;
- while(l < 0) {
- l++;
- i++;
- }
- }
- if(l >= n)
- continue;
- if(p->as != AINIT && p->as != ADYNT) {
- for(j=l+(c-i)-1; j>=l; j--)
- if(buf.dbuf[j]) {
- print("%P\n", p);
- diag("multiple initialization");
- break;
- }
- }
- switch(p->to.type) {
- default:
- diag("unknown mode in initialization%P", p);
- break;
- case D_FCONST:
- switch(c) {
- default:
- case 4:
- fl = ieeedtof(p->to.ieee);
- cast = (char*)&fl;
- for(; i<c; i++) {
- buf.dbuf[l] = cast[fnuxi4[i]];
- l++;
- }
- break;
- case 8:
- cast = (char*)p->to.ieee;
- for(; i<c; i++) {
- buf.dbuf[l] = cast[fnuxi8[i]];
- l++;
- }
- break;
- }
- break;
- case D_SCONST:
- for(; i<c; i++) {
- buf.dbuf[l] = p->to.sval[i];
- l++;
- }
- break;
- case D_CONST:
- d = p->to.offset;
- v = p->to.sym;
- if(v) {
- switch(v->type) {
- case SUNDEF:
- ckoff(v, d);
- case STEXT:
- case SLEAF:
- case SSTRING:
- d += p->to.sym->value;
- break;
- case SDATA:
- case SBSS:
- d += p->to.sym->value + INITDAT;
- }
- if(dlm)
- dynreloc(v, a+INITDAT, 1);
- }
- cast = (char*)&d;
- switch(c) {
- default:
- diag("bad nuxi %d %d%P", c, i, curp);
- break;
- case 1:
- for(; i<c; i++) {
- buf.dbuf[l] = cast[inuxi1[i]];
- l++;
- }
- break;
- case 2:
- for(; i<c; i++) {
- buf.dbuf[l] = cast[inuxi2[i]];
- l++;
- }
- break;
- case 4:
- for(; i<c; i++) {
- buf.dbuf[l] = cast[inuxi4[i]];
- l++;
- }
- break;
- }
- break;
- }
- }
- write(cout, buf.dbuf, n);
- }
- void
- asmout(Prog *p, Optab *o)
- {
- long o1, o2, o3, o4, o5, o6, v;
- int r, rf, rt, rt2;
- Sym *s;
- PP = p;
- o1 = 0;
- o2 = 0;
- o3 = 0;
- o4 = 0;
- o5 = 0;
- o6 = 0;
- switch(o->type) {
- default:
- diag("unknown asm %d", o->type);
- prasm(p);
- break;
- case 0: /* pseudo ops */
- break;
- case 1: /* op R,[R],R */
- o1 = oprrr(p->as, p->scond);
- rf = p->from.reg;
- rt = p->to.reg;
- r = p->reg;
- if(p->to.type == D_NONE)
- rt = 0;
- if(r == NREG)
- r = rt;
- o1 |= rf | (r<<16) | (rt<<12);
- break;
- case 2: /* movbu $I,[R],R */
- aclass(&p->from);
- o1 = oprrr(p->as, p->scond);
- o1 |= immrot(instoffset);
- rt = p->to.reg;
- r = p->reg;
- if(p->to.type == D_NONE)
- rt = 0;
- if(r == NREG)
- r = rt;
- o1 |= (r<<16) | (rt<<12);
- break;
- case 3: /* add R<<[IR],[R],R */
- mov:
- aclass(&p->from);
- o1 = oprrr(p->as, p->scond);
- o1 |= p->from.offset;
- rt = p->to.reg;
- r = p->reg;
- if(p->to.type == D_NONE)
- rt = 0;
- if(r == NREG)
- r = rt;
- o1 |= (r<<16) | (rt<<12);
- break;
- case 4: /* add $I,[R],R */
- aclass(&p->from);
- o1 = oprrr(AADD, p->scond);
- o1 |= immrot(instoffset);
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- o1 |= r << 16;
- o1 |= p->to.reg << 12;
- break;
- case 5: /* bra s */
- v = -8;
- if(p->cond == UP) {
- s = p->to.sym;
- if(s->type != SUNDEF)
- diag("bad branch sym type");
- v = (ulong)s->value >> (Roffset-2);
- dynreloc(s, p->pc, 0);
- }
- else if(p->cond != P)
- v = (p->cond->pc - pc) - 8;
- o1 = opbra(p->as, p->scond);
- o1 |= (v >> 2) & 0xffffff;
- break;
- case 6: /* b ,O(R) -> add $O,R,PC */
- aclass(&p->to);
- o1 = oprrr(AADD, p->scond);
- o1 |= immrot(instoffset);
- o1 |= p->to.reg << 16;
- o1 |= REGPC << 12;
- break;
- case 7: /* bl ,O(R) -> mov PC,link; add $O,R,PC */
- aclass(&p->to);
- o1 = oprrr(AADD, p->scond);
- o1 |= immrot(0);
- o1 |= REGPC << 16;
- o1 |= REGLINK << 12;
- o2 = oprrr(AADD, p->scond);
- o2 |= immrot(instoffset);
- o2 |= p->to.reg << 16;
- o2 |= REGPC << 12;
- break;
- case 8: /* sll $c,[R],R -> mov (R<<$c),R */
- aclass(&p->from);
- o1 = oprrr(p->as, p->scond);
- r = p->reg;
- if(r == NREG)
- r = p->to.reg;
- o1 |= r;
- o1 |= (instoffset&31) << 7;
- o1 |= p->to.reg << 12;
- break;
- case 9: /* sll R,[R],R -> mov (R<<R),R */
- o1 = oprrr(p->as, p->scond);
- r = p->reg;
- if(r == NREG)
- r = p->to.reg;
- o1 |= r;
- o1 |= (p->from.reg << 8) | (1<<4);
- o1 |= p->to.reg << 12;
- break;
- case 10: /* swi [$con] */
- o1 = oprrr(p->as, p->scond);
- if(p->to.type != D_NONE) {
- aclass(&p->to);
- o1 |= instoffset & 0xffffff;
- }
- break;
- case 11: /* word */
- switch(aclass(&p->to)) {
- case C_LCON:
- if(!dlm)
- break;
- if(p->to.name != D_EXTERN && p->to.name != D_STATIC)
- break;
- case C_ADDR:
- if(p->to.sym->type == SUNDEF)
- ckoff(p->to.sym, p->to.offset);
- dynreloc(p->to.sym, p->pc, 1);
- }
- o1 = instoffset;
- break;
- case 12: /* movw $lcon, reg */
- o1 = omvl(p, &p->from, p->to.reg);
- break;
- case 13: /* op $lcon, [R], R */
- o1 = omvl(p, &p->from, REGTMP);
- if(!o1)
- break;
- o2 = oprrr(p->as, p->scond);
- o2 |= REGTMP;
- r = p->reg;
- if(r == NREG)
- r = p->to.reg;
- o2 |= r << 16;
- if(p->to.type != D_NONE)
- o2 |= p->to.reg << 12;
- break;
- case 14: /* movb/movbu/movh/movhu R,R */
- o1 = oprrr(ASLL, p->scond);
- if(p->as == AMOVBU || p->as == AMOVHU)
- o2 = oprrr(ASRL, p->scond);
- else
- o2 = oprrr(ASRA, p->scond);
- r = p->to.reg;
- o1 |= (p->from.reg)|(r<<12);
- o2 |= (r)|(r<<12);
- if(p->as == AMOVB || p->as == AMOVBU) {
- o1 |= (24<<7);
- o2 |= (24<<7);
- } else {
- o1 |= (16<<7);
- o2 |= (16<<7);
- }
- break;
- case 15: /* mul r,[r,]r */
- o1 = oprrr(p->as, p->scond);
- rf = p->from.reg;
- rt = p->to.reg;
- r = p->reg;
- if(r == NREG)
- r = rt;
- if(rt == r) {
- r = rf;
- rf = rt;
- }
- if(0)
- if(rt == r || rf == REGPC || r == REGPC || rt == REGPC) {
- diag("bad registers in MUL");
- prasm(p);
- }
- o1 |= (rf<<8) | r | (rt<<16);
- break;
- case 16: /* div r,[r,]r */
- o1 = 0xf << 28;
- o2 = 0;
- break;
- case 17:
- o1 = oprrr(p->as, p->scond);
- rf = p->from.reg;
- rt = p->to.reg;
- rt2 = p->to.offset;
- r = p->reg;
- o1 |= (rf<<8) | r | (rt<<16) | (rt2<<12);
- break;
- case 20: /* mov/movb/movbu R,O(R) */
- aclass(&p->to);
- r = p->to.reg;
- if(r == NREG)
- r = o->param;
- o1 = osr(p->as, p->from.reg, instoffset, r, p->scond);
- break;
- case 21: /* mov/movbu O(R),R -> lr */
- aclass(&p->from);
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- o1 = olr(instoffset, r, p->to.reg, p->scond);
- if(p->as != AMOVW)
- o1 |= 1<<22;
- break;
- case 22: /* movb/movh/movhu O(R),R -> lr,shl,shr */
- aclass(&p->from);
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- o1 = olr(instoffset, r, p->to.reg, p->scond);
- o2 = oprrr(ASLL, p->scond);
- o3 = oprrr(ASRA, p->scond);
- r = p->to.reg;
- if(p->as == AMOVB) {
- o2 |= (24<<7)|(r)|(r<<12);
- o3 |= (24<<7)|(r)|(r<<12);
- } else {
- o2 |= (16<<7)|(r)|(r<<12);
- if(p->as == AMOVHU)
- o3 = oprrr(ASRL, p->scond);
- o3 |= (16<<7)|(r)|(r<<12);
- }
- break;
- case 23: /* movh/movhu R,O(R) -> sb,sb */
- aclass(&p->to);
- r = p->to.reg;
- if(r == NREG)
- r = o->param;
- o1 = osr(AMOVH, p->from.reg, instoffset, r, p->scond);
- o2 = oprrr(ASRL, p->scond);
- o2 |= (8<<7)|(p->from.reg)|(REGTMP<<12);
- o3 = osr(AMOVH, REGTMP, instoffset+1, r, p->scond);
- break;
- case 30: /* mov/movb/movbu R,L(R) */
- o1 = omvl(p, &p->to, REGTMP);
- if(!o1)
- break;
- r = p->to.reg;
- if(r == NREG)
- r = o->param;
- o2 = osrr(p->from.reg, REGTMP,r, p->scond);
- if(p->as != AMOVW)
- o2 |= 1<<22;
- break;
- case 31: /* mov/movbu L(R),R -> lr[b] */
- case 32: /* movh/movb L(R),R -> lr[b] */
- o1 = omvl(p, &p->from, REGTMP);
- if(!o1)
- break;
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- o2 = olrr(REGTMP,r, p->to.reg, p->scond);
- if(p->as == AMOVBU || p->as == AMOVB)
- o2 |= 1<<22;
- if(o->type == 31)
- break;
- o3 = oprrr(ASLL, p->scond);
- if(p->as == AMOVBU || p->as == AMOVHU)
- o4 = oprrr(ASRL, p->scond);
- else
- o4 = oprrr(ASRA, p->scond);
- r = p->to.reg;
- o3 |= (r)|(r<<12);
- o4 |= (r)|(r<<12);
- if(p->as == AMOVB || p->as == AMOVBU) {
- o3 |= (24<<7);
- o4 |= (24<<7);
- } else {
- o3 |= (16<<7);
- o4 |= (16<<7);
- }
- break;
- case 33: /* movh/movhu R,L(R) -> sb, sb */
- o1 = omvl(p, &p->to, REGTMP);
- if(!o1)
- break;
- r = p->to.reg;
- if(r == NREG)
- r = o->param;
- o2 = osrr(p->from.reg, REGTMP, r, p->scond);
- o2 |= (1<<22) ;
- o3 = oprrr(ASRL, p->scond);
- o3 |= (8<<7)|(p->from.reg)|(p->from.reg<<12);
- o3 |= (1<<6); /* ROR 8 */
- o4 = oprrr(AADD, p->scond);
- o4 |= (REGTMP << 12) | (REGTMP << 16);
- o4 |= immrot(1);
- o5 = osrr(p->from.reg, REGTMP,r,p->scond);
- o5 |= (1<<22);
- o6 = oprrr(ASRL, p->scond);
- o6 |= (24<<7)|(p->from.reg)|(p->from.reg<<12);
- o6 |= (1<<6); /* ROL 8 */
- break;
-
- case 34: /* mov $lacon,R */
- o1 = omvl(p, &p->from, REGTMP);
- if(!o1)
- break;
- o2 = oprrr(AADD, p->scond);
- o2 |= REGTMP;
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- o2 |= r << 16;
- if(p->to.type != D_NONE)
- o2 |= p->to.reg << 12;
- break;
- case 35: /* mov PSR,R */
- o1 = (2<<23) | (0xf<<16) | (0<<0);
- o1 |= (p->scond & C_SCOND) << 28;
- o1 |= (p->from.reg & 1) << 22;
- o1 |= p->to.reg << 12;
- break;
- case 36: /* mov R,PSR */
- o1 = (2<<23) | (0x29f<<12) | (0<<4);
- if(p->scond & C_FBIT)
- o1 ^= 0x010 << 12;
- o1 |= (p->scond & C_SCOND) << 28;
- o1 |= (p->to.reg & 1) << 22;
- o1 |= p->from.reg << 0;
- break;
- case 37: /* mov $con,PSR */
- aclass(&p->from);
- o1 = (2<<23) | (0x29f<<12) | (0<<4);
- if(p->scond & C_FBIT)
- o1 ^= 0x010 << 12;
- o1 |= (p->scond & C_SCOND) << 28;
- o1 |= immrot(instoffset);
- o1 |= (p->to.reg & 1) << 22;
- o1 |= p->from.reg << 0;
- break;
- case 38: /* movm $con,oreg -> stm */
- o1 = (0x4 << 25);
- o1 |= p->from.offset & 0xffff;
- o1 |= p->to.reg << 16;
- aclass(&p->to);
- goto movm;
- case 39: /* movm oreg,$con -> ldm */
- o1 = (0x4 << 25) | (1 << 20);
- o1 |= p->to.offset & 0xffff;
- o1 |= p->from.reg << 16;
- aclass(&p->from);
- movm:
- if(instoffset != 0)
- diag("offset must be zero in MOVM");
- o1 |= (p->scond & C_SCOND) << 28;
- if(p->scond & C_PBIT)
- o1 |= 1 << 24;
- if(p->scond & C_UBIT)
- o1 |= 1 << 23;
- if(p->scond & C_SBIT)
- o1 |= 1 << 22;
- if(p->scond & C_WBIT)
- o1 |= 1 << 21;
- break;
- case 40: /* swp oreg,reg,reg */
- aclass(&p->from);
- if(instoffset != 0)
- diag("offset must be zero in SWP");
- o1 = (0x2<<23) | (0x9<<4);
- if(p->as != ASWPW)
- o1 |= 1 << 22;
- o1 |= p->from.reg << 16;
- o1 |= p->reg << 0;
- o1 |= p->to.reg << 12;
- o1 |= (p->scond & C_SCOND) << 28;
- break;
- case 41: /* rfe -> movm.s.w.u 0(r13),[r15] */
- o1 = 0xe8fd8000;
- break;
- case 50: /* floating point store */
- v = regoff(&p->to);
- r = p->to.reg;
- if(r == NREG)
- r = o->param;
- o1 = ofsr(p->as, p->from.reg, v, r, p->scond, p);
- break;
- case 51: /* floating point load */
- v = regoff(&p->from);
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- o1 = ofsr(p->as, p->to.reg, v, r, p->scond, p) | (1<<20);
- break;
- case 52: /* floating point store, long offset UGLY */
- o1 = omvl(p, &p->to, REGTMP);
- if(!o1)
- break;
- r = p->to.reg;
- if(r == NREG)
- r = o->param;
- o2 = oprrr(AADD, p->scond) | (REGTMP << 12) | (REGTMP << 16) | r;
- o3 = ofsr(p->as, p->from.reg, 0, REGTMP, p->scond, p);
- break;
- case 53: /* floating point load, long offset UGLY */
- o1 = omvl(p, &p->from, REGTMP);
- if(!o1)
- break;
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- o2 = oprrr(AADD, p->scond) | (REGTMP << 12) | (REGTMP << 16) | r;
- o3 = ofsr(p->as, p->to.reg, 0, REGTMP, p->scond, p) | (1<<20);
- break;
- case 54: /* floating point arith */
- o1 = oprrr(p->as, p->scond);
- if(p->from.type == D_FCONST) {
- rf = chipfloat(p->from.ieee);
- if(rf < 0){
- diag("invalid floating-point immediate\n%P", p);
- rf = 0;
- }
- rf |= (1<<3);
- } else
- rf = p->from.reg;
- rt = p->to.reg;
- r = p->reg;
- if(p->to.type == D_NONE)
- rt = 0; /* CMP[FD] */
- else if(o1 & (1<<15))
- r = 0; /* monadic */
- else if(r == NREG)
- r = rt;
- o1 |= rf | (r<<16) | (rt<<12);
- break;
- case 55: /* floating point fix and float */
- o1 = oprrr(p->as, p->scond);
- rf = p->from.reg;
- rt = p->to.reg;
- if(p->to.type == D_NONE){
- rt = 0;
- diag("to.type==D_NONE (asm/fp)");
- }
- if(p->from.type == D_REG)
- o1 |= (rf<<12) | (rt<<16);
- else
- o1 |= rf | (rt<<12);
- break;
- case 56: /* move to FP[CS]R */
- o1 = ((p->scond & C_SCOND) << 28) | (0xe << 24) | (1<<8) | (1<<4);
- o1 |= ((p->to.reg+1)<<21) | (p->from.reg << 12);
- break;
- case 57: /* move from FP[CS]R */
- o1 = ((p->scond & C_SCOND) << 28) | (0xe << 24) | (1<<8) | (1<<4);
- o1 |= ((p->from.reg+1)<<21) | (p->to.reg<<12) | (1<<20);
- break;
- case 58: /* movbu R,R */
- o1 = oprrr(AAND, p->scond);
- o1 |= immrot(0xff);
- rt = p->to.reg;
- r = p->from.reg;
- if(p->to.type == D_NONE)
- rt = 0;
- if(r == NREG)
- r = rt;
- o1 |= (r<<16) | (rt<<12);
- break;
- case 59: /* movw/bu R<<I(R),R -> ldr indexed */
- if(p->from.reg == NREG) {
- if(p->as != AMOVW)
- diag("byte MOV from shifter operand");
- goto mov;
- }
- if(p->from.offset&(1<<4))
- diag("bad shift in LDR");
- o1 = olrr(p->from.offset, p->from.reg, p->to.reg, p->scond);
- if(p->as == AMOVBU)
- o1 |= 1<<22;
- break;
- case 60: /* movb R(R),R -> ldrsb indexed */
- if(p->from.reg == NREG) {
- diag("byte MOV from shifter operand");
- goto mov;
- }
- if(p->from.offset&(~0xf))
- diag("bad shift in LDRSB");
- o1 = olhrr(p->from.offset, p->from.reg, p->to.reg, p->scond);
- o1 ^= (1<<5)|(1<<6);
- break;
- case 61: /* movw/b/bu R,R<<[IR](R) -> str indexed */
- if(p->to.reg == NREG)
- diag("MOV to shifter operand");
- o1 = osrr(p->from.reg, p->to.offset, p->to.reg, p->scond);
- if(p->as == AMOVB || p->as == AMOVBU)
- o1 |= 1<<22;
- break;
- case 62: /* case R -> movw R<<2(PC),PC */
- o1 = olrr(p->from.reg, REGPC, REGPC, p->scond);
- o1 |= 2<<7;
- break;
- case 63: /* bcase */
- if(p->cond != P) {
- o1 = p->cond->pc;
- if(dlm)
- dynreloc(S, p->pc, 1);
- }
- break;
- /* reloc ops */
- case 64: /* mov/movb/movbu R,addr */
- o1 = omvl(p, &p->to, REGTMP);
- if(!o1)
- break;
- o2 = osr(p->as, p->from.reg, 0, REGTMP, p->scond);
- break;
- case 65: /* mov/movbu addr,R */
- case 66: /* movh/movhu/movb addr,R */
- o1 = omvl(p, &p->from, REGTMP);
- if(!o1)
- break;
- o2 = olr(0, REGTMP, p->to.reg, p->scond);
- if(p->as == AMOVBU || p->as == AMOVB)
- o2 |= 1<<22;
- if(o->type == 65)
- break;
- o3 = oprrr(ASLL, p->scond);
- if(p->as == AMOVBU || p->as == AMOVHU)
- o4 = oprrr(ASRL, p->scond);
- else
- o4 = oprrr(ASRA, p->scond);
- r = p->to.reg;
- o3 |= (r)|(r<<12);
- o4 |= (r)|(r<<12);
- if(p->as == AMOVB || p->as == AMOVBU) {
- o3 |= (24<<7);
- o4 |= (24<<7);
- } else {
- o3 |= (16<<7);
- o4 |= (16<<7);
- }
- break;
- case 67: /* movh/movhu R,addr -> sb, sb */
- o1 = omvl(p, &p->to, REGTMP);
- if(!o1)
- break;
- o2 = osr(p->as, p->from.reg, 0, REGTMP, p->scond);
- o3 = oprrr(ASRL, p->scond);
- o3 |= (8<<7)|(p->from.reg)|(p->from.reg<<12);
- o3 |= (1<<6); /* ROR 8 */
- o4 = oprrr(AADD, p->scond);
- o4 |= (REGTMP << 12) | (REGTMP << 16);
- o4 |= immrot(1);
- o5 = osr(p->as, p->from.reg, 0, REGTMP, p->scond);
- o6 = oprrr(ASRL, p->scond);
- o6 |= (24<<7)|(p->from.reg)|(p->from.reg<<12);
- o6 |= (1<<6); /* ROL 8 */
- break;
- case 68: /* floating point store -> ADDR */
- o1 = omvl(p, &p->to, REGTMP);
- if(!o1)
- break;
- o2 = ofsr(p->as, p->from.reg, 0, REGTMP, p->scond, p);
- break;
- case 69: /* floating point load <- ADDR */
- o1 = omvl(p, &p->from, REGTMP);
- if(!o1)
- break;
- o2 = ofsr(p->as, p->to.reg, 0, REGTMP, p->scond, p) | (1<<20);
- break;
- /* ArmV4 ops: */
- case 70: /* movh/movhu R,O(R) -> strh */
- aclass(&p->to);
- r = p->to.reg;
- if(r == NREG)
- r = o->param;
- o1 = oshr(p->from.reg, instoffset, r, p->scond);
- break;
- case 71: /* movb/movh/movhu O(R),R -> ldrsb/ldrsh/ldrh */
- aclass(&p->from);
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- o1 = olhr(instoffset, r, p->to.reg, p->scond);
- if(p->as == AMOVB)
- o1 ^= (1<<5)|(1<<6);
- else if(p->as == AMOVH)
- o1 ^= (1<<6);
- break;
- case 72: /* movh/movhu R,L(R) -> strh */
- o1 = omvl(p, &p->to, REGTMP);
- if(!o1)
- break;
- r = p->to.reg;
- if(r == NREG)
- r = o->param;
- o2 = oshrr(p->from.reg, REGTMP,r, p->scond);
- break;
- case 73: /* movb/movh/movhu L(R),R -> ldrsb/ldrsh/ldrh */
- o1 = omvl(p, &p->from, REGTMP);
- if(!o1)
- break;
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- o2 = olhrr(REGTMP, r, p->to.reg, p->scond);
- if(p->as == AMOVB)
- o2 ^= (1<<5)|(1<<6);
- else if(p->as == AMOVH)
- o2 ^= (1<<6);
- break;
- }
- if(debug['a'] > 1)
- Bprint(&bso, "%2d ", o->type);
- v = p->pc;
- switch(o->size) {
- default:
- if(debug['a'])
- Bprint(&bso, " %.8lux:\t\t%P\n", v, p);
- break;
- case 4:
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux\t%P\n", v, o1, p);
- lputl(o1);
- break;
- case 8:
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux %.8lux%P\n", v, o1, o2, p);
- lputl(o1);
- lputl(o2);
- break;
- case 12:
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux%P\n", v, o1, o2, o3, p);
- lputl(o1);
- lputl(o2);
- lputl(o3);
- break;
- case 16:
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux %.8lux%P\n",
- v, o1, o2, o3, o4, p);
- lputl(o1);
- lputl(o2);
- lputl(o3);
- lputl(o4);
- break;
- case 20:
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux %.8lux %.8lux%P\n",
- v, o1, o2, o3, o4, o5, p);
- lputl(o1);
- lputl(o2);
- lputl(o3);
- lputl(o4);
- lputl(o5);
- break;
- case 24:
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux %.8lux %.8lux %.8lux%P\n",
- v, o1, o2, o3, o4, o5, o6, p);
- lputl(o1);
- lputl(o2);
- lputl(o3);
- lputl(o4);
- lputl(o5);
- lputl(o6);
- break;
- }
- }
- long
- oprrr(int a, int sc)
- {
- long o;
- o = (sc & C_SCOND) << 28;
- if(sc & C_SBIT)
- o |= 1 << 20;
- if(sc & (C_PBIT|C_WBIT))
- diag(".P/.W on dp instruction");
- switch(a) {
- case AMULU:
- case AMUL: return o | (0x0<<21) | (0x9<<4);
- case AMULA: return o | (0x1<<21) | (0x9<<4);
- case AMULLU: return o | (0x4<<21) | (0x9<<4);
- case AMULL: return o | (0x6<<21) | (0x9<<4);
- case AMULALU: return o | (0x5<<21) | (0x9<<4);
- case AMULAL: return o | (0x7<<21) | (0x9<<4);
- case AAND: return o | (0x0<<21);
- case AEOR: return o | (0x1<<21);
- case ASUB: return o | (0x2<<21);
- case ARSB: return o | (0x3<<21);
- case AADD: return o | (0x4<<21);
- case AADC: return o | (0x5<<21);
- case ASBC: return o | (0x6<<21);
- case ARSC: return o | (0x7<<21);
- case ATST: return o | (0x8<<21) | (1<<20);
- case ATEQ: return o | (0x9<<21) | (1<<20);
- case ACMP: return o | (0xa<<21) | (1<<20);
- case ACMN: return o | (0xb<<21) | (1<<20);
- case AORR: return o | (0xc<<21);
- case AMOVW: return o | (0xd<<21);
- case ABIC: return o | (0xe<<21);
- case AMVN: return o | (0xf<<21);
- case ASLL: return o | (0xd<<21) | (0<<5);
- case ASRL: return o | (0xd<<21) | (1<<5);
- case ASRA: return o | (0xd<<21) | (2<<5);
- case ASWI: return o | (0xf<<24);
- case AADDD: return o | (0xe<<24) | (0x0<<20) | (1<<8) | (1<<7);
- case AADDF: return o | (0xe<<24) | (0x0<<20) | (1<<8);
- case AMULD: return o | (0xe<<24) | (0x1<<20) | (1<<8) | (1<<7);
- case AMULF: return o | (0xe<<24) | (0x1<<20) | (1<<8);
- case ASUBD: return o | (0xe<<24) | (0x2<<20) | (1<<8) | (1<<7);
- case ASUBF: return o | (0xe<<24) | (0x2<<20) | (1<<8);
- case ADIVD: return o | (0xe<<24) | (0x4<<20) | (1<<8) | (1<<7);
- case ADIVF: return o | (0xe<<24) | (0x4<<20) | (1<<8);
- case ACMPD:
- case ACMPF: return o | (0xe<<24) | (0x9<<20) | (0xF<<12) | (1<<8) | (1<<4); /* arguably, ACMPF should expand to RNDF, CMPD */
- case AMOVF:
- case AMOVDF: return o | (0xe<<24) | (0x0<<20) | (1<<15) | (1<<8);
- case AMOVD:
- case AMOVFD: return o | (0xe<<24) | (0x0<<20) | (1<<15) | (1<<8) | (1<<7);
- case AMOVWF: return o | (0xe<<24) | (0<<20) | (1<<8) | (1<<4);
- case AMOVWD: return o | (0xe<<24) | (0<<20) | (1<<8) | (1<<4) | (1<<7);
- case AMOVFW: return o | (0xe<<24) | (1<<20) | (1<<8) | (1<<4);
- case AMOVDW: return o | (0xe<<24) | (1<<20) | (1<<8) | (1<<4) | (1<<7);
- }
- diag("bad rrr %d", a);
- prasm(curp);
- return 0;
- }
- long
- opbra(int a, int sc)
- {
- if(sc & (C_SBIT|C_PBIT|C_WBIT))
- diag(".S/.P/.W on bra instruction");
- sc &= C_SCOND;
- if(a == ABL)
- return (sc<<28)|(0x5<<25)|(0x1<<24);
- if(sc != 0xe)
- diag(".COND on bcond instruction");
- switch(a) {
- case ABEQ: return (0x0<<28)|(0x5<<25);
- case ABNE: return (0x1<<28)|(0x5<<25);
- case ABCS: return (0x2<<28)|(0x5<<25);
- case ABHS: return (0x2<<28)|(0x5<<25);
- case ABCC: return (0x3<<28)|(0x5<<25);
- case ABLO: return (0x3<<28)|(0x5<<25);
- case ABMI: return (0x4<<28)|(0x5<<25);
- case ABPL: return (0x5<<28)|(0x5<<25);
- case ABVS: return (0x6<<28)|(0x5<<25);
- case ABVC: return (0x7<<28)|(0x5<<25);
- case ABHI: return (0x8<<28)|(0x5<<25);
- case ABLS: return (0x9<<28)|(0x5<<25);
- case ABGE: return (0xa<<28)|(0x5<<25);
- case ABLT: return (0xb<<28)|(0x5<<25);
- case ABGT: return (0xc<<28)|(0x5<<25);
- case ABLE: return (0xd<<28)|(0x5<<25);
- case AB: return (0xe<<28)|(0x5<<25);
- }
- diag("bad bra %A", a);
- prasm(curp);
- return 0;
- }
- long
- olr(long v, int b, int r, int sc)
- {
- long o;
- if(sc & C_SBIT)
- diag(".S on LDR/STR instruction");
- o = (sc & C_SCOND) << 28;
- if(!(sc & C_PBIT))
- o |= 1 << 24;
- if(!(sc & C_UBIT))
- o |= 1 << 23;
- if(sc & C_WBIT)
- o |= 1 << 21;
- o |= (0x1<<26) | (1<<20);
- if(v < 0) {
- v = -v;
- o ^= 1 << 23;
- }
- if(v >= (1<<12))
- diag("literal span too large: %d (R%d)\n%P", v, b, PP);
- o |= v;
- o |= b << 16;
- o |= r << 12;
- return o;
- }
- long
- olhr(long v, int b, int r, int sc)
- {
- long o;
- if(sc & C_SBIT)
- diag(".S on LDRH/STRH instruction");
- o = (sc & C_SCOND) << 28;
- if(!(sc & C_PBIT))
- o |= 1 << 24;
- if(sc & C_WBIT)
- o |= 1 << 21;
- o |= (1<<23) | (1<<20)|(0xb<<4);
- if(v < 0) {
- v = -v;
- o ^= 1 << 23;
- }
- if(v >= (1<<8))
- diag("literal span too large: %d (R%d)\n%P", v, b, PP);
- o |= (v&0xf)|((v>>4)<<8)|(1<<22);
- o |= b << 16;
- o |= r << 12;
- return o;
- }
- long
- osr(int a, int r, long v, int b, int sc)
- {
- long o;
- o = olr(v, b, r, sc) ^ (1<<20);
- if(a != AMOVW)
- o |= 1<<22;
- return o;
- }
- long
- oshr(int r, long v, int b, int sc)
- {
- long o;
- o = olhr(v, b, r, sc) ^ (1<<20);
- return o;
- }
-
- long
- osrr(int r, int i, int b, int sc)
- {
- return olr(i, b, r, sc) ^ ((1<<25) | (1<<20));
- }
- long
- oshrr(int r, int i, int b, int sc)
- {
- return olhr(i, b, r, sc) ^ ((1<<22) | (1<<20));
- }
- long
- olrr(int i, int b, int r, int sc)
- {
- return olr(i, b, r, sc) ^ (1<<25);
- }
- long
- olhrr(int i, int b, int r, int sc)
- {
- return olhr(i, b, r, sc) ^ (1<<22);
- }
- long
- ofsr(int a, int r, long v, int b, int sc, Prog *p)
- {
- long o;
- if(sc & C_SBIT)
- diag(".S on FLDR/FSTR instruction");
- o = (sc & C_SCOND) << 28;
- if(!(sc & C_PBIT))
- o |= 1 << 24;
- if(sc & C_WBIT)
- o |= 1 << 21;
- o |= (6<<25) | (1<<24) | (1<<23);
- if(v < 0) {
- v = -v;
- o ^= 1 << 23;
- }
- if(v & 3)
- diag("odd offset for floating point op: %d\n%P", v, p);
- else if(v >= (1<<10))
- diag("literal span too large: %d\n%P", v, p);
- o |= (v>>2) & 0xFF;
- o |= b << 16;
- o |= r << 12;
- o |= 1 << 8;
- switch(a) {
- default:
- diag("bad fst %A", a);
- case AMOVD:
- o |= 1<<15;
- case AMOVF:
- break;
- }
- return o;
- }
- long
- omvl(Prog *p, Adr *a, int dr)
- {
- long v, o1;
- if(!p->cond) {
- aclass(a);
- v = immrot(~instoffset);
- if(v == 0) {
- diag("missing literal");
- prasm(p);
- return 0;
- }
- o1 = oprrr(AMVN, p->scond&C_SCOND);
- o1 |= v;
- o1 |= dr << 12;
- } else {
- v = p->cond->pc - p->pc - 8;
- o1 = olr(v, REGPC, dr, p->scond&C_SCOND);
- }
- return o1;
- }
- static Ieee chipfloats[] = {
- {0x00000000, 0x00000000}, /* 0 */
- {0x00000000, 0x3ff00000}, /* 1 */
- {0x00000000, 0x40000000}, /* 2 */
- {0x00000000, 0x40080000}, /* 3 */
- {0x00000000, 0x40100000}, /* 4 */
- {0x00000000, 0x40140000}, /* 5 */
- {0x00000000, 0x3fe00000}, /* .5 */
- {0x00000000, 0x40240000}, /* 10 */
- };
- int
- chipfloat(Ieee *e)
- {
- Ieee *p;
- int n;
- for(n = sizeof(chipfloats)/sizeof(chipfloats[0]); --n >= 0;){
- p = &chipfloats[n];
- if(p->l == e->l && p->h == e->h)
- return n;
- }
- return -1;
- }
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