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- #include "l.h"
- long OFFSET;
- /*
- long BADOFFSET = -1;
- if(OFFSET <= BADOFFSET && OFFSET+4 > BADOFFSET)\
- abort();\
- OFFSET += 4;\
- if(OFFSET == BADOFFSET)\
- abort();\
- OFFSET++;\
- */
- #define LPUT(l) { \
- if (little) { \
- LLEPUT(l); \
- } else { \
- LBEPUT(l); \
- } \
- }
- #define LLEPUT(c)\
- {\
- cbp[0] = (c);\
- cbp[1] = (c)>>8;\
- cbp[2] = (c)>>16;\
- cbp[3] = (c)>>24;\
- cbp += 4;\
- cbc -= 4;\
- if(cbc <= 0)\
- cflush();\
- }
- #define LBEPUT(c)\
- {\
- cbp[0] = (c)>>24;\
- cbp[1] = (c)>>16;\
- cbp[2] = (c)>>8;\
- cbp[3] = (c);\
- cbp += 4;\
- cbc -= 4;\
- if(cbc <= 0)\
- cflush();\
- }
- #define CPUT(c)\
- {\
- cbp[0] = (c);\
- cbp++;\
- cbc--;\
- if(cbc <= 0)\
- cflush();\
- }
- void
- objput(long l) /* emit long in byte order appropriate to object machine */
- {
- LPUT(l);
- }
- void
- lput(long l) /* emit long in big-endian byte order */
- {
- LBEPUT(l);
- }
- 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;
- if(s->type != STEXT && s->type != SLEAF)
- 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 */
- if(asmout(p, o, 0)) {
- p = p->link;
- pc += 4;
- }
- pc += o->size;
- }
- if(debug['a'])
- Bprint(&bso, "\n");
- Bflush(&bso);
- cflush();
- 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);
- }
- Bflush(&bso);
- cflush();
- curtext = P;
- switch(HEADTYPE) {
- case 0:
- case 4:
- OFFSET = rnd(HEADR+textsize, 4096);
- seek(cout, OFFSET, 0);
- break;
- case 1:
- case 2:
- case 3:
- case 5:
- case 6:
- OFFSET = HEADR+textsize;
- seek(cout, OFFSET, 0);
- break;
- }
- 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 4:
- OFFSET = rnd(HEADR+textsize, 4096)+datsize;
- seek(cout, OFFSET, 0);
- break;
- case 3:
- case 2:
- case 1:
- case 5:
- case 6:
- OFFSET = HEADR+textsize+datsize;
- 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();
- cflush();
- }
- if(debug['v'])
- Bprint(&bso, "%5.2f header\n", cputime());
- Bflush(&bso);
- OFFSET = 0;
- seek(cout, OFFSET, 0);
- switch(HEADTYPE) {
- case 0:
- lput(0x160L<<16); /* magic and sections */
- lput(0L); /* time and date */
- lput(rnd(HEADR+textsize, 4096)+datsize);
- lput(symsize); /* nsyms */
- lput((0x38L<<16)|7L); /* size of optional hdr and flags */
- lput((0413<<16)|0437L); /* magic and version */
- lput(rnd(HEADR+textsize, 4096)); /* sizes */
- lput(datsize);
- lput(bsssize);
- lput(entryvalue()); /* va of entry */
- lput(INITTEXT-HEADR); /* va of base of text */
- lput(INITDAT); /* va of base of data */
- lput(INITDAT+datsize); /* va of base of bss */
- lput(~0L); /* gp reg mask */
- lput(0L);
- lput(0L);
- lput(0L);
- lput(0L);
- lput(~0L); /* gp value ?? */
- break;
- case 1:
- lput(0x160L<<16); /* magic and sections */
- lput(0L); /* time and date */
- lput(HEADR+textsize+datsize);
- lput(symsize); /* nsyms */
- lput((0x38L<<16)|7L); /* size of optional hdr and flags */
- lput((0407<<16)|0437L); /* magic and version */
- lput(textsize); /* sizes */
- lput(datsize);
- lput(bsssize);
- lput(entryvalue()); /* va of entry */
- lput(INITTEXT); /* va of base of text */
- lput(INITDAT); /* va of base of data */
- lput(INITDAT+datsize); /* va of base of bss */
- lput(~0L); /* gp reg mask */
- lput(lcsize);
- lput(0L);
- lput(0L);
- lput(0L);
- lput(~0L); /* gp value ?? */
- lput(0L); /* complete mystery */
- break;
- case 2:
- if (little)
- t = 24;
- else
- t = 16;
- lput(((((4*t)+0)*t)+7)); /* magic */
- lput(textsize); /* sizes */
- lput(datsize);
- lput(bsssize);
- lput(symsize); /* nsyms */
- lput(entryvalue()); /* va of entry */
- lput(0L);
- lput(lcsize);
- break;
- case 3:
- lput((0x160L<<16)|3L); /* magic and sections */
- lput(time(0)); /* time and date */
- lput(HEADR+textsize+datsize);
- lput(symsize); /* nsyms */
- lput((0x38L<<16)|7L); /* size of optional hdr and flags */
- lput((0407<<16)|0437L); /* magic and version */
- lput(textsize); /* sizes */
- lput(datsize);
- lput(bsssize);
- lput(entryvalue()); /* va of entry */
- lput(INITTEXT); /* va of base of text */
- lput(INITDAT); /* va of base of data */
- lput(INITDAT+datsize); /* va of base of bss */
- lput(~0L); /* gp reg mask */
- lput(lcsize);
- lput(0L);
- lput(0L);
- lput(0L);
- lput(~0L); /* gp value ?? */
- strnput(".text", 8); /* text segment */
- lput(INITTEXT); /* address */
- lput(INITTEXT);
- lput(textsize);
- lput(HEADR);
- lput(0L);
- lput(HEADR+textsize+datsize+symsize);
- lput(lcsize); /* line number size */
- lput(0x20L); /* flags */
- strnput(".data", 8); /* data segment */
- lput(INITDAT); /* address */
- lput(INITDAT);
- lput(datsize);
- lput(HEADR+textsize);
- lput(0L);
- lput(0L);
- lput(0L);
- lput(0x40L); /* flags */
- strnput(".bss", 8); /* bss segment */
- lput(INITDAT+datsize); /* address */
- lput(INITDAT+datsize);
- lput(bsssize);
- lput(0L);
- lput(0L);
- lput(0L);
- lput(0L);
- lput(0x80L); /* flags */
- break;
- case 4:
- lput((0x160L<<16)|3L); /* magic and sections */
- lput(time(0)); /* time and date */
- lput(rnd(HEADR+textsize, 4096)+datsize);
- lput(symsize); /* nsyms */
- lput((0x38L<<16)|7L); /* size of optional hdr and flags */
- lput((0413<<16)|01012L); /* magic and version */
- lput(textsize); /* sizes */
- lput(datsize);
- lput(bsssize);
- lput(entryvalue()); /* va of entry */
- lput(INITTEXT); /* va of base of text */
- lput(INITDAT); /* va of base of data */
- lput(INITDAT+datsize); /* va of base of bss */
- lput(~0L); /* gp reg mask */
- lput(lcsize);
- lput(0L);
- lput(0L);
- lput(0L);
- lput(~0L); /* gp value ?? */
- strnput(".text", 8); /* text segment */
- lput(INITTEXT); /* address */
- lput(INITTEXT);
- lput(textsize);
- lput(HEADR);
- lput(0L);
- lput(HEADR+textsize+datsize+symsize);
- lput(lcsize); /* line number size */
- lput(0x20L); /* flags */
- strnput(".data", 8); /* data segment */
- lput(INITDAT); /* address */
- lput(INITDAT);
- lput(datsize);
- lput(rnd(HEADR+textsize, 4096)); /* sizes */
- lput(0L);
- lput(0L);
- lput(0L);
- lput(0x40L); /* flags */
- strnput(".bss", 8); /* bss segment */
- lput(INITDAT+datsize); /* address */
- lput(INITDAT+datsize);
- lput(bsssize);
- lput(0L);
- lput(0L);
- lput(0L);
- lput(0L);
- lput(0x80L); /* flags */
- break;
- case 5:
- strnput("\177ELF", 4); /* e_ident */
- CPUT(1); /* class = 32 bit */
- CPUT(2); /* data = MSB */
- CPUT(1); /* version = CURRENT */
- strnput("", 9);
- lput((2L<<16)|8L); /* type = EXEC; machine = MIPS */
- lput(1L); /* version = CURRENT */
- lput(entryvalue()); /* entry vaddr */
- lput(52L); /* offset to first phdr */
- lput(0L); /* offset to first shdr */
- lput(0L); /* flags = MIPS */
- lput((52L<<16)|32L); /* Ehdr & Phdr sizes*/
- lput((3L<<16)|0L); /* # Phdrs & Shdr size */
- lput((0L<<16)|0L); /* # Shdrs & shdr string size */
- /* TODO: only these few words are in native byte order? */
- objput(1L); /* text - type = PT_LOAD */
- objput(0L); /* file offset */
- objput(INITTEXT-HEADR); /* vaddr */
- objput(INITTEXT-HEADR); /* paddr */
- objput(HEADR+textsize); /* file size */
- objput(HEADR+textsize); /* memory size */
- objput(0x05L); /* protections = RX */
- objput(0x10000L); /* alignment code?? */
- lput(1L); /* data - type = PT_LOAD */
- lput(HEADR+textsize); /* file offset */
- lput(INITDAT); /* vaddr */
- lput(INITDAT); /* paddr */
- lput(datsize); /* file size */
- lput(datsize+bsssize); /* memory size */
- lput(0x06L); /* protections = RW */
- lput(0x10000L); /* alignment code?? */
- lput(0L); /* data - type = PT_NULL */
- lput(HEADR+textsize+datsize); /* file offset */
- lput(0L);
- lput(0L);
- lput(symsize); /* symbol table size */
- lput(lcsize); /* line number size */
- lput(0x04L); /* protections = R */
- lput(0x04L); /* alignment code?? */
- break;
- case 6:
- break;
- }
- cflush();
- }
- void
- strnput(char *s, int n)
- {
- for(; *s; s++){
- CPUT(*s);
- n--;
- }
- for(; n > 0; n--)
- CPUT(0);
- }
- 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 SSTRING:
- putsymb(s->name, 'T', 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 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++;
- LBEPUT(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)
- {
- Prog *p;
- char *cast;
- long l, fl, j, d;
- int i, c;
- memset(buf.dbuf, 0, n+100);
- for(p = datap; p != P; p = p->link) {
- curp = p;
- if(str != (p->from.sym->type == SSTRING))
- continue;
- l = p->from.sym->value + p->from.offset - 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\n%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[fnuxi8[i+4]];
- 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;
- if(p->to.sym) {
- switch(p->to.sym->type) {
- case STEXT:
- case SLEAF:
- case SSTRING:
- d += p->to.sym->value;
- break;
- case SDATA:
- case SBSS:
- d += p->to.sym->value + INITDAT;
- break;
- }
- }
- cast = (char*)&d;
- switch(c) {
- default:
- diag("bad nuxi %d %d\n%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);
- }
- #define OP_RRR(op,r1,r2,r3)\
- (op|(((r1)&31L)<<16)|(((r2)&31L)<<21)|(((r3)&31L)<<11))
- #define OP_IRR(op,i,r2,r3)\
- (op|((i)&0xffffL)|(((r2)&31L)<<21)|(((r3)&31L)<<16))
- #define OP_SRR(op,s,r2,r3)\
- (op|(((s)&31L)<<6)|(((r2)&31L)<<16)|(((r3)&31L)<<11))
- #define OP_FRRR(op,r1,r2,r3)\
- (op|(((r1)&31L)<<16)|(((r2)&31L)<<11)|(((r3)&31L)<<6))
- #define OP_JMP(op,i)\
- ((op)|((i)&0x3ffffffL))
- #define OP(x,y)\
- (((x)<<3)|((y)<<0))
- #define SP(x,y)\
- (((x)<<29)|((y)<<26))
- #define BCOND(x,y)\
- (((x)<<19)|((y)<<16))
- #define MMU(x,y)\
- (SP(2,0)|(16<<21)|((x)<<3)|((y)<<0))
- #define FPF(x,y)\
- (SP(2,1)|(16<<21)|((x)<<3)|((y)<<0))
- #define FPD(x,y)\
- (SP(2,1)|(17<<21)|((x)<<3)|((y)<<0))
- #define FPW(x,y)\
- (SP(2,1)|(20<<21)|((x)<<3)|((y)<<0))
- int vshift(int);
- int
- asmout(Prog *p, Optab *o, int aflag)
- {
- long o1, o2, o3, o4, o5, o6, o7, v;
- Prog *ct;
- int r, a;
- o1 = 0;
- o2 = 0;
- o3 = 0;
- o4 = 0;
- o5 = 0;
- o6 = 0;
- o7 = 0;
- switch(o->type) {
- default:
- diag("unknown type %d", o->type);
- if(!debug['a'])
- prasm(p);
- break;
- case 0: /* pseudo ops */
- if(aflag) {
- if(p->link) {
- if(p->as == ATEXT) {
- ct = curtext;
- o2 = autosize;
- curtext = p;
- autosize = p->to.offset + 4;
- o1 = asmout(p->link, oplook(p->link), aflag);
- curtext = ct;
- autosize = o2;
- } else
- o1 = asmout(p->link, oplook(p->link), aflag);
- }
- return o1;
- }
- break;
- case 1: /* mov[v] r1,r2 ==> OR r1,r0,r2 */
- o1 = OP_RRR(oprrr(AOR), p->from.reg, REGZERO, p->to.reg);
- break;
- case 2: /* add/sub r1,[r2],r3 */
- r = p->reg;
- if(r == NREG)
- r = p->to.reg;
- o1 = OP_RRR(oprrr(p->as), p->from.reg, r, p->to.reg);
- break;
- case 3: /* mov $soreg, r ==> or/add $i,o,r */
- v = regoff(&p->from);
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- a = AADDU;
- if(o->a1 == C_ANDCON)
- a = AOR;
- o1 = OP_IRR(opirr(a), v, r, p->to.reg);
- break;
- case 4: /* add $scon,[r1],r2 */
- v = regoff(&p->from);
- r = p->reg;
- if(r == NREG)
- r = p->to.reg;
- o1 = OP_IRR(opirr(p->as), v, r, p->to.reg);
- break;
- case 5: /* syscall */
- if(aflag)
- return 0;
- o1 = oprrr(p->as);
- break;
- case 6: /* beq r1,[r2],sbra */
- if(aflag)
- return 0;
- if(p->cond == P)
- v = -4 >> 2;
- else
- v = (p->cond->pc - pc-4) >> 2;
- if(((v << 16) >> 16) != v)
- diag("short branch too far: %d\n%P", v, p);
- o1 = OP_IRR(opirr(p->as), v, p->from.reg, p->reg);
- break;
- case 7: /* mov r, soreg ==> sw o(r) */
- r = p->to.reg;
- if(r == NREG)
- r = o->param;
- v = regoff(&p->to);
- o1 = OP_IRR(opirr(p->as), v, r, p->from.reg);
- break;
- case 8: /* mov soreg, r ==> lw o(r) */
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- v = regoff(&p->from);
- o1 = OP_IRR(opirr(p->as+ALAST), v, r, p->to.reg);
- break;
- case 9: /* asl r1,[r2],r3 */
- r = p->reg;
- if(r == NREG)
- r = p->to.reg;
- o1 = OP_RRR(oprrr(p->as), r, p->from.reg, p->to.reg);
- break;
- case 10: /* add $con,[r1],r2 ==> mov $con,t; add t,[r1],r2 */
- v = regoff(&p->from);
- r = AOR;
- if(v < 0)
- r = AADDU;
- o1 = OP_IRR(opirr(r), v, 0, REGTMP);
- r = p->reg;
- if(r == NREG)
- r = p->to.reg;
- o2 = OP_RRR(oprrr(p->as), REGTMP, r, p->to.reg);
- break;
- case 11: /* jmp lbra */
- if(aflag)
- return 0;
- if(p->cond == P)
- v = p->pc >> 2;
- else
- v = p->cond->pc >> 2;
- o1 = OP_JMP(opirr(p->as), v);
- if(!debug['Y'] && p->link && p->cond && isnop(p->link)) {
- nop.branch.count--;
- nop.branch.outof--;
- nop.jump.outof++;
- o2 = asmout(p->cond, oplook(p->cond), 1);
- if(o2) {
- o1 += 1;
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux %.8lux%P\n",
- p->pc, o1, o2, p);
- LPUT(o1);
- LPUT(o2);
- return 1;
- }
- }
- break;
- case 12: /* movbs r,r */
- v = 16;
- if(p->as == AMOVB)
- v = 24;
- o1 = OP_SRR(opirr(ASLL), v, p->from.reg, p->to.reg);
- o2 = OP_SRR(opirr(ASRA), v, p->to.reg, p->to.reg);
- break;
- case 13: /* movbu r,r */
- if(p->as == AMOVBU)
- o1 = OP_IRR(opirr(AAND), 0xffL, p->from.reg, p->to.reg);
- else
- o1 = OP_IRR(opirr(AAND), 0xffffL, p->from.reg, p->to.reg);
- break;
- case 16: /* sll $c,[r1],r2 */
- v = regoff(&p->from);
- r = p->reg;
- if(r == NREG)
- r = p->to.reg;
- /* OP_SRR will use only the low 5 bits of the shift value */
- if(v >= 32 && vshift(p->as))
- o1 = OP_SRR(opirr(p->as+ALAST), v-32, r, p->to.reg);
- else
- o1 = OP_SRR(opirr(p->as), v, r, p->to.reg);
- break;
- case 18: /* jmp [r1],0(r2) */
- if(aflag)
- return 0;
- r = p->reg;
- if(r == NREG)
- r = o->param;
- o1 = OP_RRR(oprrr(p->as), 0, p->to.reg, r);
- break;
- case 19: /* mov $lcon,r ==> lu+or */
- v = regoff(&p->from);
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, p->to.reg);
- o2 = OP_IRR(opirr(AOR), v, p->to.reg, p->to.reg);
- break;
- case 20: /* mov lohi,r */
- r = OP(2,0); /* mfhi */
- if(p->from.type == D_LO)
- r = OP(2,2); /* mflo */
- o1 = OP_RRR(r, REGZERO, REGZERO, p->to.reg);
- break;
- case 21: /* mov r,lohi */
- r = OP(2,1); /* mthi */
- if(p->to.type == D_LO)
- r = OP(2,3); /* mtlo */
- o1 = OP_RRR(r, REGZERO, p->from.reg, REGZERO);
- break;
- case 22: /* mul r1,r2 */
- o1 = OP_RRR(oprrr(p->as), p->from.reg, p->reg, REGZERO);
- break;
- case 23: /* add $lcon,r1,r2 ==> lu+or+add */
- v = regoff(&p->from);
- if(p->to.reg == REGTMP || p->reg == REGTMP)
- diag("cant synthesize large constant\n%P", p);
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP);
- o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP);
- r = p->reg;
- if(r == NREG)
- r = p->to.reg;
- o3 = OP_RRR(oprrr(p->as), REGTMP, r, p->to.reg);
- break;
- case 24: /* mov $ucon,,r ==> lu r */
- v = regoff(&p->from);
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, p->to.reg);
- break;
- case 25: /* add/and $ucon,[r1],r2 ==> lu $con,t; add t,[r1],r2 */
- v = regoff(&p->from);
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP);
- r = p->reg;
- if(r == NREG)
- r = p->to.reg;
- o2 = OP_RRR(oprrr(p->as), REGTMP, r, p->to.reg);
- break;
- case 26: /* mov $lsext/auto/oreg,,r2 ==> lu+or+add */
- v = regoff(&p->from);
- if(p->to.reg == REGTMP)
- diag("cant synthesize large constant\n%P", p);
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP);
- o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP);
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- o3 = OP_RRR(oprrr(AADDU), REGTMP, r, p->to.reg);
- break;
- case 27: /* mov [sl]ext/auto/oreg,fr ==> lwc1 o(r) */
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- v = regoff(&p->from);
- switch(o->size) {
- case 20:
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP);
- o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP);
- o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP);
- o4 = OP_IRR(opirr(AMOVF+ALAST), 0, REGTMP, p->to.reg+1);
- o5 = OP_IRR(opirr(AMOVF+ALAST), 4, REGTMP, p->to.reg);
- break;
- case 16:
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP);
- o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP);
- o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP);
- o4 = OP_IRR(opirr(AMOVF+ALAST), 0, REGTMP, p->to.reg);
- break;
- case 8:
- o1 = OP_IRR(opirr(AMOVF+ALAST), v, r, p->to.reg+1);
- o2 = OP_IRR(opirr(AMOVF+ALAST), v+4, r, p->to.reg);
- break;
- case 4:
- o1 = OP_IRR(opirr(AMOVF+ALAST), v, r, p->to.reg);
- break;
- }
- break;
- case 28: /* mov fr,[sl]ext/auto/oreg ==> swc1 o(r) */
- r = p->to.reg;
- if(r == NREG)
- r = o->param;
- v = regoff(&p->to);
- switch(o->size) {
- case 20:
- if(r == REGTMP)
- diag("cant synthesize large constant\n%P", p);
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP);
- o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP);
- o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP);
- o4 = OP_IRR(opirr(AMOVF), 0, REGTMP, p->from.reg+1);
- o5 = OP_IRR(opirr(AMOVF), 4, REGTMP, p->from.reg);
- break;
- case 16:
- if(r == REGTMP)
- diag("cant synthesize large constant\n%P", p);
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP);
- o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP);
- o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP);
- o4 = OP_IRR(opirr(AMOVF), 0, REGTMP, p->from.reg);
- break;
- case 8:
- o1 = OP_IRR(opirr(AMOVF), v, r, p->from.reg+1);
- o2 = OP_IRR(opirr(AMOVF), v+4, r, p->from.reg);
- break;
- case 4:
- o1 = OP_IRR(opirr(AMOVF), v, r, p->from.reg);
- break;
- }
- break;
- case 30: /* movw r,fr */
- r = SP(2,1)|(4<<21); /* mtc1 */
- o1 = OP_RRR(r, p->from.reg, 0, p->to.reg);
- break;
- case 31: /* movw fr,r */
- r = SP(2,1)|(0<<21); /* mfc1 */
- o1 = OP_RRR(r, p->to.reg, 0, p->from.reg);
- break;
- case 32: /* fadd fr1,[fr2],fr3 */
- r = p->reg;
- if(r == NREG)
- o1 = OP_FRRR(oprrr(p->as), p->from.reg, p->to.reg, p->to.reg);
- else
- o1 = OP_FRRR(oprrr(p->as), p->from.reg, r, p->to.reg);
- break;
- case 33: /* fabs fr1,fr3 */
- o1 = OP_FRRR(oprrr(p->as), 0, p->from.reg, p->to.reg);
- break;
- case 34: /* mov $con,fr ==> or/add $i,r,r2 */
- v = regoff(&p->from);
- r = AADDU;
- if(o->a1 == C_ANDCON)
- r = AOR;
- o1 = OP_IRR(opirr(r), v, 0, REGTMP);
- o2 = OP_RRR(SP(2,1)|(4<<21), REGTMP, 0, p->to.reg); /* mtc1 */
- break;
- case 35: /* mov r,lext/luto/oreg ==> sw o(r) */
- /*
- * the lowbits of the constant cannot
- * be moved into the offset of the load
- * because the mips 4000 in 64-bit mode
- * does a 64-bit add and it will screw up.
- */
- v = regoff(&p->to);
- r = p->to.reg;
- if(r == NREG)
- r = o->param;
- if(r == REGTMP)
- diag("cant synthesize large constant\n%P", p);
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP);
- o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP);
- o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP);
- o4 = OP_IRR(opirr(p->as), 0, REGTMP, p->from.reg);
- break;
- case 36: /* mov lext/lauto/lreg,r ==> lw o(r30) */
- v = regoff(&p->from);
- r = p->from.reg;
- if(r == NREG)
- r = o->param;
- if(r == REGTMP)
- diag("cant synthesize large constant\n%P", p);
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP);
- o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP);
- o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP);
- o4 = OP_IRR(opirr(p->as+ALAST), 0, REGTMP, p->to.reg);
- break;
- case 37: /* movw r,mr */
- r = SP(2,0)|(4<<21); /* mtc0 */
- if(p->as == AMOVV)
- r = SP(2,0)|(5<<21); /* dmtc0 */
- o1 = OP_RRR(r, p->from.reg, 0, p->to.reg);
- break;
- case 38: /* movw mr,r */
- r = SP(2,0)|(0<<21); /* mfc0 */
- if(p->as == AMOVV)
- r = SP(2,0)|(1<<21); /* dmfc0 */
- o1 = OP_RRR(r, p->to.reg, 0, p->from.reg);
- break;
- case 39: /* rfe ==> jmp+rfe */
- if(aflag)
- return 0;
- o1 = OP_RRR(oprrr(AJMP), 0, p->to.reg, REGZERO);
- o2 = oprrr(p->as);
- break;
- case 40: /* word */
- if(aflag)
- return 0;
- o1 = regoff(&p->to);
- break;
- case 41: /* movw r,fcr */
- o1 = OP_RRR(SP(2,1)|(2<<21), REGZERO, 0, p->to.reg); /* mfcc1 */
- o2 = OP_RRR(SP(2,1)|(6<<21), p->from.reg, 0, p->to.reg);/* mtcc1 */
- break;
- case 42: /* movw fcr,r */
- o1 = OP_RRR(SP(2,1)|(2<<21), p->to.reg, 0, p->from.reg);/* mfcc1 */
- break;
- case 45: /* case r */
- if(p->link == P)
- v = p->pc+28;
- else
- v = p->link->pc;
- if(v & (1<<15))
- o1 = OP_IRR(opirr(ALAST), (v>>16)+1, REGZERO, REGTMP);
- else
- o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP);
- o2 = OP_SRR(opirr(ASLL), 2, p->from.reg, p->from.reg);
- o3 = OP_RRR(oprrr(AADD), p->from.reg, REGTMP, REGTMP);
- o4 = OP_IRR(opirr(AMOVW+ALAST), v, REGTMP, REGTMP);
- o5 = OP_RRR(oprrr(ANOR), REGZERO, REGZERO, REGZERO);
- o6 = OP_RRR(oprrr(AJMP), 0, REGTMP, REGZERO);
- o7 = OP_RRR(oprrr(ANOR), REGZERO, REGZERO, REGZERO);
- break;
- case 46: /* bcase $con,lbra */
- if(p->cond == P)
- v = p->pc;
- else
- v = p->cond->pc;
- o1 = v;
- break;
- }
- if(aflag)
- return o1;
- 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);
- LPUT(o1);
- break;
- case 8:
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux %.8lux%P\n", v, o1, o2, p);
- LPUT(o1);
- LPUT(o2);
- break;
- case 12:
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux%P\n", v, o1, o2, o3, p);
- LPUT(o1);
- LPUT(o2);
- LPUT(o3);
- break;
- case 16:
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux %.8lux%P\n",
- v, o1, o2, o3, o4, p);
- LPUT(o1);
- LPUT(o2);
- LPUT(o3);
- LPUT(o4);
- break;
- case 20:
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux %.8lux %.8lux%P\n",
- v, o1, o2, o3, o4, o5, p);
- LPUT(o1);
- LPUT(o2);
- LPUT(o3);
- LPUT(o4);
- LPUT(o5);
- break;
- case 28:
- if(debug['a'])
- Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux %.8lux %.8lux %.8lux %.8lux%P\n",
- v, o1, o2, o3, o4, o5, o6, o7, p);
- LPUT(o1);
- LPUT(o2);
- LPUT(o3);
- LPUT(o4);
- LPUT(o5);
- LPUT(o6);
- LPUT(o7);
- break;
- }
- return 0;
- }
- int
- isnop(Prog *p)
- {
- if(p->as != ANOR)
- return 0;
- if(p->reg != REGZERO && p->reg != NREG)
- return 0;
- if(p->from.type != D_REG || p->from.reg != REGZERO)
- return 0;
- if(p->to.type != D_REG || p->to.reg != REGZERO)
- return 0;
- return 1;
- }
- long
- oprrr(int a)
- {
- switch(a) {
- case AADD: return OP(4,0);
- case AADDU: return OP(4,1);
- case ASGT: return OP(5,2);
- case ASGTU: return OP(5,3);
- case AAND: return OP(4,4);
- case AOR: return OP(4,5);
- case AXOR: return OP(4,6);
- case ASUB: return OP(4,2);
- case ASUBU: return OP(4,3);
- case ANOR: return OP(4,7);
- case ASLL: return OP(0,4);
- case ASRL: return OP(0,6);
- case ASRA: return OP(0,7);
- case AREM:
- case ADIV: return OP(3,2);
- case AREMU:
- case ADIVU: return OP(3,3);
- case AMUL: return OP(3,0);
- case AMULU: return OP(3,1);
- case AJMP: return OP(1,0);
- case AJAL: return OP(1,1);
- case ABREAK: return OP(1,5);
- case ASYSCALL: return OP(1,4);
- case ATLBP: return MMU(1,0);
- case ATLBR: return MMU(0,1);
- case ATLBWI: return MMU(0,2);
- case ATLBWR: return MMU(0,6);
- case ARFE: return MMU(2,0);
- case ADIVF: return FPF(0,3);
- case ADIVD: return FPD(0,3);
- case AMULF: return FPF(0,2);
- case AMULD: return FPD(0,2);
- case ASUBF: return FPF(0,1);
- case ASUBD: return FPD(0,1);
- case AADDF: return FPF(0,0);
- case AADDD: return FPD(0,0);
- case AMOVFW: return FPF(4,4);
- case AMOVDW: return FPD(4,4);
- case AMOVWF: return FPW(4,0);
- case AMOVDF: return FPD(4,0);
- case AMOVWD: return FPW(4,1);
- case AMOVFD: return FPF(4,1);
- case AABSF: return FPF(0,5);
- case AABSD: return FPD(0,5);
- case AMOVF: return FPF(0,6);
- case AMOVD: return FPD(0,6);
- case ANEGF: return FPF(0,7);
- case ANEGD: return FPD(0,7);
- case ACMPEQF: return FPF(6,2);
- case ACMPEQD: return FPD(6,2);
- case ACMPGTF: return FPF(7,4);
- case ACMPGTD: return FPD(7,4);
- case ACMPGEF: return FPF(7,6);
- case ACMPGED: return FPD(7,6);
- case ADIVV: return OP(3,6);
- case ADIVVU: return OP(3,7);
- case AADDV: return OP(5,4);
- case AADDVU: return OP(5,5);
- }
- diag("bad rrr %d", a);
- return 0;
- }
- long
- opirr(int a)
- {
- switch(a) {
- case AADD: return SP(1,0);
- case AADDU: return SP(1,1);
- case ASGT: return SP(1,2);
- case ASGTU: return SP(1,3);
- case AAND: return SP(1,4);
- case AOR: return SP(1,5);
- case AXOR: return SP(1,6);
- case ALAST: return SP(1,7);
- case ASLL: return OP(0,0);
- case ASRL: return OP(0,2);
- case ASRA: return OP(0,3);
- case AJMP: return SP(0,2);
- case AJAL: return SP(0,3);
- case ABEQ: return SP(0,4);
- case ABNE: return SP(0,5);
- case ABGEZ: return SP(0,1)|BCOND(0,1);
- case ABGEZAL: return SP(0,1)|BCOND(2,1);
- case ABGTZ: return SP(0,7);
- case ABLEZ: return SP(0,6);
- case ABLTZ: return SP(0,1)|BCOND(0,0);
- case ABLTZAL: return SP(0,1)|BCOND(2,0);
- case ABFPT: return SP(2,1)|(257<<16);
- case ABFPF: return SP(2,1)|(256<<16);
- case AMOVB:
- case AMOVBU: return SP(5,0);
- case AMOVH:
- case AMOVHU: return SP(5,1);
- case AMOVW: return SP(5,3);
- case AMOVV: return SP(7,7);
- case AMOVF: return SP(7,1);
- case AMOVWL: return SP(5,2);
- case AMOVWR: return SP(5,6);
- case AMOVVL: return SP(5,4);
- case AMOVVR: return SP(5,5);
- case ABREAK: return SP(5,7);
- case AMOVWL+ALAST: return SP(4,2);
- case AMOVWR+ALAST: return SP(4,6);
- case AMOVVL+ALAST: return SP(3,2);
- case AMOVVR+ALAST: return SP(3,3);
- case AMOVB+ALAST: return SP(4,0);
- case AMOVBU+ALAST: return SP(4,4);
- case AMOVH+ALAST: return SP(4,1);
- case AMOVHU+ALAST: return SP(4,5);
- case AMOVW+ALAST: return SP(4,3);
- case AMOVV+ALAST: return SP(6,7);
- case AMOVF+ALAST: return SP(6,1);
- case ASLLV: return OP(7,0);
- case ASRLV: return OP(7,2);
- case ASRAV: return OP(7,3);
- case ASLLV+ALAST: return OP(7,4);
- case ASRLV+ALAST: return OP(7,6);
- case ASRAV+ALAST: return OP(7,7);
- case AADDV: return SP(3,0);
- case AADDVU: return SP(3,1);
- }
- diag("bad irr %d", a);
- abort();
- return 0;
- }
- int
- vshift(int a)
- {
- switch(a){
- case ASLLV: return 1;
- case ASRLV: return 1;
- case ASRAV: return 1;
- }
- return 0;
- }
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