ref: a2ad59b340bf3339dbba105310002474b98d0184
dir: /sys/src/cmd/zl/asm.c/
#include "l.h"
long OFFSET;
#define PADDR(a) ((a) & ~0xfffffffff0000000ull)
#define VPUT(v) VLEPUT(v)
#define VLEPUT(c)\
{\
cbp[0] = (c);\
cbp[1] = (c)>>8;\
cbp[2] = (c)>>16;\
cbp[3] = (c)>>24;\
cbp[4] = (c)>>32;\
cbp[5] = (c)>>40;\
cbp[6] = (c)>>48;\
cbp[7] = (c)>>56;\
cbp += 8;\
cbc -= 8;\
if(cbc <= 0)\
cflush();\
}
#define VBEPUT(c)\
{\
cbp[0] = (c)>>56;\
cbp[1] = (c)>>48;\
cbp[2] = (c)>>40;\
cbp[3] = (c)>>32;\
cbp[4] = (c)>>24;\
cbp[5] = (c)>>16;\
cbp[6] = (c)>>8;\
cbp[7] = (c);\
cbp += 8;\
cbc -= 8;\
if(cbc <= 0)\
cflush();\
}
#define LPUT(l) LLEPUT(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 HPUT(h) HLEPUT(h)
#define HLEPUT(c)\
{\
cbp[0] = (c);\
cbp[1] = (c)>>8;\
cbp += 2;\
cbc -= 2;\
if(cbc <= 0)\
cflush();\
}
#define HBEPUT(c)\
{\
cbp[0] = (c)>>8;\
cbp[1] = (c);\
cbp += 2;\
cbc -= 2;\
if(cbc <= 0)\
cflush();\
}
#define CPUT(c)\
{\
cbp[0] = (c);\
cbp++;\
cbc--;\
if(cbc <= 0)\
cflush();\
}
void
cput(long l)
{
CPUT(l);
}
void
objput(long l) /* emit long in byte order appropriate to object machine */
{
LPUT(l);
}
void
objhput(short s)
{
HPUT(s);
}
void
wput(long l)
{
cbp[0] = l>>8;
cbp[1] = l;
cbp += 2;
cbc -= 2;
if(cbc <= 0)
cflush();
}
void
wputl(long l)
{
cbp[0] = l;
cbp[1] = l>>8;
cbp += 2;
cbc -= 2;
if(cbc <= 0)
cflush();
}
void
lput(long l) /* emit long in big-endian byte order */
{
LBEPUT(l);
}
void
lputl(long l) /* emit long in big-endian byte order */
{
LLEPUT(l);
}
void
llput(vlong v)
{
lput(v>>32);
lput(v);
}
void
llputl(vlong v)
{
lputl(v);
lputl(v>>32);
}
vlong
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 magic;
vlong vl, 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 + 8;
}
if(p->pc != pc) {
diag("phase error %llux sb %llux", 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 2:
OFFSET = HEADR+textsize;
seek(cout, OFFSET, 0);
break;
case 6: /* no header, padded */
OFFSET = rnd(HEADR+textsize, INITRND);
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:
debug['s'] = 1;
break;
case 2:
OFFSET = HEADR+textsize+datsize;
seek(cout, OFFSET, 0);
break;
case 6: /* no header, padded */
OFFSET += rnd(datsize, INITRND);
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: /* no header */
case 6: /* no header, padded */
break;
case 2:
magic = 4*29*29+7;
magic |= 0x00008000;
lput(magic); /* magic */
lput(textsize); /* sizes */
lput(datsize);
lput(bsssize);
lput(symsize); /* nsyms */
vl = entryvalue();
lput(PADDR(vl)); /* va of entry */
lput(0L);
lput(lcsize);
llput(vl); /* va of entry */
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+8, 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, vlong v, int ver)
{
int i, f;
long l;
if(t == 'f')
s++;
if(HEADTYPE == 2) {
l = v >> 32;
LBEPUT(l);
}
l = v;
LBEPUT(l);
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(HEADTYPE == 2)
symsize += 4;
if(debug['n']) {
if(t == 'z' || t == 'Z') {
Bprint(&bso, "%c %.8llux ", 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 %.8llux %s<%d>\n", t, v, s, ver);
else
Bprint(&bso, "%c %.8llux %s\n", t, v, s);
}
}
#define MINLC 4
void
asmlc(void)
{
long oldlc, v, s;
vlong oldpc;
Prog *p;
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['V'])
Bprint(&bso, "%6llux %P\n", p->pc, p);
continue;
}
if(debug['V'])
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['V'])
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['V']) {
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, "%6llux %P\n", p->pc, p);
}
lcsize += 5;
continue;
}
if(s > 0) {
CPUT(0+s); /* 1-64 +lc */
if(debug['V']) {
Bprint(&bso, " lc+%ld(%ld)\n", s, 0+s);
Bprint(&bso, "%6llux %P\n", p->pc, p);
}
} else {
CPUT(64-s); /* 65-128 -lc */
if(debug['V']) {
Bprint(&bso, " lc%ld(%ld)\n", s, 64-s);
Bprint(&bso, "%6llux %P\n", p->pc, p);
}
}
lcsize++;
}
while(lcsize & 1) {
s = 129;
CPUT(s);
lcsize++;
}
if(debug['v'] || debug['V'])
Bprint(&bso, "lcsize = %ld\n", lcsize);
Bflush(&bso);
}
void
datblk(long s, long n, int str)
{
Prog *p;
char *cast;
long l, fl, j;
vlong 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[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;
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;
case 8:
for(; i<c; i++) {
buf.dbuf[l] = cast[inuxi8[i]];
l++;
}
break;
}
break;
}
}
write(cout, buf.dbuf, n);
}
#define OP_RRR(op,r1,r2,r3)\
(op|(((r1)&0x1FL)<<10)|(((r2)&0x1FL)<<5)|(((r3)&0x1FL)<<0))
#define OP_RR(op,r2,r3)\
(op|(((r2)&0x1FL)<<5)|(((r3)&0x1FL)<<0))
#define OP_16IR_5I(op,i,r2)\
(op|(((i)&0xFFFFL)<<10)|(((r2)&0x1FL)<<5)|(((i)>>16)&0x1FL))
#define OP_16IRR(op,i,r2,r3)\
(op|(((i)&0xFFFFL)<<10)|(((r2)&0x1FL)<<5)|(((r3)&0x1FL)<<0))
#define OP_12IRR(op,i,r2,r3)\
(op|(((i)&0xFFFL)<<10)|(((r2)&0x1FL)<<5)|(((r3)&0x1FL)<<0))
#define OP_IR(op,i,r2)\
(op|(((i)&0xFFFFFL)<<5)|(((r2)&0x1FL)<<0))
#define OP_B_BL(op,i)\
(op|(((i)&0xFFFFL)<<10)|(((i)>>16)&0x3FFL))
#define OP(x,y)\
(((x)<<3)|((y)<<0))
#define SP(x,y)\
(((x)<<29)|((y)<<26))
#define OP_TEN(x,y)\
(((x)<<21)|((y)<<10))
int vshift(int);
int
asmout(Prog *p, Optab *o, int aflag)
{
long o1, o2, o3, o4, o5;
vlong v;
Prog *ct;
int r, a;
o1 = 0;
o2 = 0;
o3 = 0;
o4 = 0;
o5 = 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 + 8;
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), REGZERO, p->from.reg, 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 = AADDVU;
if(o->a1 == C_ANDCON)
a = AOR;
o1 = OP_12IRR(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_12IRR(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;
v = 0;
if(p->cond != P)
v = (p->cond->pc - pc) >> 2;
if(((v << 16) >> 16) != v)
diag("short branch too far: %lld\n%P", v, p);
o1 = OP_16IRR(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_12IRR(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_12IRR(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_12IRR(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;
v = 0;
if(p->cond != P)
v = (p->cond->pc - pc) >> 2;
o1 = OP_B_BL(opirr(p->as), v);
break;
case 12: /* movbs r,r */
v = 16;
if(p->as == AMOVB)
v = 24;
o1 = OP_16IRR(opirr(ASLL), v, p->from.reg, p->to.reg);
o2 = OP_16IRR(opirr(ASRA), v, p->to.reg, p->to.reg);
break;
case 13: /* movbu r,r */
if(p->as == AMOVBU)
o1 = OP_12IRR(opirr(AAND), 0xffL, p->from.reg, p->to.reg);
else
o1 = (0x33c0<<10) | ((p->from.reg&0x1FL)<<5) | (p->to.reg&0x1FL);
break;
case 14: /* movwu r,r */
o1 = OP_16IRR(opirr(ASLLV+ALAST), 32, p->from.reg, p->to.reg);
o2 = OP_16IRR(opirr(ASRLV+ALAST), 32, p->to.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_16IRR(opirr(p->as+ALAST), v&0x3FL, r, p->to.reg);
else
o1 = OP_16IRR(opirr(p->as), v&0x1FL, 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_IR(opir(ALU12IW), v>>12, p->to.reg);
o2 = OP_12IRR(opirr(AOR), v, p->to.reg, p->to.reg);
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_IR(opir(ALU12IW), v>>12, REGTMP);
o2 = OP_12IRR(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_IR(opir(ALU12IW), v>>12, p->to.reg);
break;
case 25: /* add/and $ucon,[r1],r2 ==> lu $con,t; add t,[r1],r2 */
v = regoff(&p->from);
o1 = OP_IR(opir(ALU12IW), v>>12, 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_IR(opir(ALU12IW), v>>12, REGTMP);
o2 = OP_12IRR(opirr(AOR), v, REGTMP, REGTMP);
r = p->from.reg;
if(r == NREG)
r = o->param;
o3 = OP_RRR(oprrr(AADDVU), 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);
a = AMOVF+ALAST;
if(p->as == AMOVD)
a = AMOVD+ALAST;
switch(o->size) {
case 12:
o1 = OP_IR(opir(ALU12IW), (v+1<<11)>>12, REGTMP);
o2 = OP_RRR(oprrr(AADDVU), r, REGTMP, REGTMP);
o3 = OP_12IRR(opirr(a), v, REGTMP, p->to.reg);
break;
case 4:
o1 = OP_12IRR(opirr(a), v, r, p->to.reg);
break;
default:
diag("bad 27 op size");
}
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);
a = AMOVF;
if(p->as == AMOVD)
a = AMOVD;
switch(o->size) {
case 12:
if(r == REGTMP)
diag("cant synthesize large constant\n%P", p);
o1 = OP_IR(opir(ALU12IW), (v+1<<11)>>12, REGTMP);
o2 = OP_RRR(oprrr(AADDVU), r, REGTMP, REGTMP);
o3 = OP_12IRR(opirr(a), v, REGTMP, p->from.reg);
break;
case 4:
o1 = OP_12IRR(opirr(a), v, r, p->from.reg);
break;
default:
diag("bad 28 op size");
}
break;
case 30: /* movw r,fr */
a = OP_TEN(8, 1321); /* movgr2fr.w */
o1 = OP_RR(a, p->from.reg, p->to.reg);
break;
case 31: /* movw fr,r */
a = OP_TEN(8, 1325); /* movfr2gr.s */
o1 = OP_RR(a, p->to.reg, p->from.reg);
break;
case 32: /* fadd fr1,[fr2],fr3 */
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 33: /* fabs fr1,fr3 */
o1 = OP_RRR(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_12IRR(opirr(r), v, 0, REGTMP);
o2 = OP_RRR(OP_TEN(8, 1321), REGTMP, 0, p->to.reg); /* movgr2fr.w */
break;
case 35: /* mov r,lext/luto/oreg ==> sw o(r) */
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_IR(opir(ALU12IW), (v+1<<11)>>12, REGTMP);
o2 = OP_RRR(oprrr(AADDVU), r, REGTMP, REGTMP);
o3 = OP_12IRR(opirr(p->as), r, 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_IR(opir(ALU12IW), (v+1<<11)>>12, REGTMP);
o2 = OP_RRR(oprrr(AADDVU), r, REGTMP, REGTMP);
o3 = OP_12IRR(opirr(p->as+ALAST), v, REGTMP, p->to.reg);
break;
case 40: /* word */
if(aflag)
return 0;
o1 = regoff(&p->to);
break;
case 47: /* movv r,fr */
r = OP_TEN(8, 1322); /* movgr2fr.d */
o1 = OP_RR(r, p->from.reg, p->to.reg);
break;
case 48: /* movv fr,r */
r = OP_TEN(8, 1326); /* movfr2gr.d */
o1 = OP_RR(r, p->from.reg, p->to.reg);
break;
}
if(aflag)
return o1;
v = p->pc;
switch(o->size) {
default:
if(debug['a'])
Bprint(&bso, " %.16llux:\t\t%P\n", v, p);
break;
case 4:
if(debug['a'])
Bprint(&bso, " %.16llux: %.8lux\t%P\n", v, o1, p);
LPUT(o1);
break;
case 8:
if(debug['a'])
Bprint(&bso, " %.16llux: %.8lux %.8lux\t%P\n", v, o1, o2, p);
LPUT(o1);
LPUT(o2);
break;
case 12:
if(debug['a'])
Bprint(&bso, " %.16llux: %.8lux %.8lux %.8lux\t%P\n", v, o1, o2, o3, p);
LPUT(o1);
LPUT(o2);
LPUT(o3);
break;
case 16:
if(debug['a'])
Bprint(&bso, " %.16llux: %.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, " %.16llux: %.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;
}
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:
case AADDU: return 0x20<<15;
case ASGT: return 0x24<<15;
case ASGTU: return 0x25<<15;
case AAND: return 0x29<<15;
case AOR: return 0x2a<<15;
case AXOR: return 0x2b<<15;
case ASUB:
case ASUBU: return 0x22<<15;
case ANOR: return 0x28<<15;
case ASLL: return 0x2e<<15;
case ASRL: return 0x2f<<15;
case ASRA: return 0x30<<15;
case ASLLV: return 0x31<<15;
case ASRLV: return 0x32<<15;
case ASRAV: return 0x33<<15;
case AADDV:
case AADDVU: return 0x21<<15;
case ASUBV:
case ASUBVU: return 0x23<<15;
case AREM: return 0x41<<15;
case ADIV: return 0x40<<15;
case AREMU: return 0x43<<15;
case ADIVU: return 0x42<<15;
case AMUL:
case AMULU: return 0x38<<15;
case AREMV: return 0x45<<15;
case ADIVV: return 0x44<<15;
case AREMVU: return 0x47<<15;
case ADIVVU: return 0x46<<15;
case AMULV:
case AMULVU: return 0x3b<<15;
case AJMP: return 0x13<<26;
case AJAL: return (0x13<<26)|1;
case ABREAK: return 0x54<<15;
case ASYSCALL: return 0x56<<15;
case ADIVF: return 0x20d<<15;
case ADIVD: return 0x20e<<15;
case AMULF: return 0x209<<15;
case AMULD: return 0x20a<<15;
case ASUBF: return 0x205<<15;
case ASUBD: return 0x206<<15;
case AADDF: return 0x201<<15;
case AADDD: return 0x202<<15;
case ATRUNCFV: return 0x46a9<<10;
case ATRUNCDV: return 0x46aa<<10;
case ATRUNCFW: return 0x46a1<<10;
case ATRUNCDW: return 0x46a2<<10;
case AMOVFV: return 0x46c9<<10;
case AMOVDV: return 0x46ca<<10;
case AMOVVF: return 0x4746<<10;
case AMOVVD: return 0x474a<<10;
case AMOVFW: return 0x46c1<<10;
case AMOVDW: return 0x46c2<<10;
case AMOVWF: return 0x4744<<10;
case AMOVDF: return 0x4646<<10;
case AMOVWD: return 0x4748<<10;
case AMOVFD: return 0x4649<<10;
case AABSF: return 0x4501<<10;
case AABSD: return 0x4502<<10;
case AMOVF: return 0x4525<<10;
case AMOVD: return 0x4526<<10;
case ANEGF: return 0x4505<<10;
case ANEGD: return 0x4506<<10;
case ACMPEQF: return (0xc1<<20) | (0x4<<15);
case ACMPEQD: return (0xc2<<20) | (0x4<<15);
case ACMPGTF: return (0xc1<<20) | (0x3<<15);
case ACMPGTD: return (0xc2<<20) | (0x3<<15);
case ACMPGEF: return (0xc1<<20) | (0x7<<15);
case ACMPGED: return (0xc2<<20) | (0x7<<15);
}
if(a >= ALAST)
diag("bad rrr %A+ALAST", a-ALAST);
else
diag("bad rrr %A", a);
return 0;
}
long
opir(int a)
{
switch(a){
case ALU12IW: return 0xa<<25;
case ALU32ID: return 0xb<<25;
}
diag("bad ir %d", a);
return 0;
}
long
opirr(int a)
{
switch(a) {
case AADD:
case AADDU: return 0xa<<22;
case ASGT: return 0x8<<22;
case ASGTU: return 0x9<<22;
case AAND: return 0xd<<22;
case AOR: return 0xe<<22;
case AXOR: return 0xf<<22;
case ASLL: return 0x81<<15;
case ASRL: return 0x89<<15;
case ASRA: return 0x91<<15;
case AADDV:
case AADDVU: return 0xb<<22;
case AJMP: return 0x14<<26;
case AJAL: return 0x15<<26;
case ABEQ: return 0x16<<26;
case ABEQ+ALAST: return 0x10<<26; /* likely */
case ABNE: return 0x17<<26;
case ABNE+ALAST: return 0x11<<26; /* likely */
case ABLEZ:
case ABGEZ: return 0x19<<26;
case ABLTZ:
case ABGTZ: return 0x18<<26;
case ABFPT: return (0x12<<26) | (0x1<<8);
case ABFPF: return 0x12<<26;
case AMOVB:
case AMOVBU: return 0xa4<<22;
case AMOVH:
case AMOVHU: return 0xa5<<22;
case AMOVW: return 0xa6<<22;
case AMOVV: return 0xa7<<22;
case AMOVF: return 0xad<<22;
case AMOVD: return 0xaf<<22;
case AMOVWL: return 0xbc<<22;
case AMOVWR: return 0xbd<<22;
case AMOVVL: return 0xbe<<22;
case AMOVVR: return 0xbf<<22;
case ABREAK: return 0x18<<22;
case AMOVWL+ALAST: return 0xb8<<22;
case AMOVWR+ALAST: return 0xb9<<22;
case AMOVVL+ALAST: return 0xba<<22;
case AMOVVR+ALAST: return 0xbb<<22;
case AMOVB+ALAST: return 0xa0<<22;
case AMOVBU+ALAST: return 0xa8<<22;
case AMOVH+ALAST: return 0xa1<<22;
case AMOVHU+ALAST: return 0xa9<<22;
case AMOVW+ALAST: return 0xa2<<22;
case AMOVV+ALAST: return 0xa3<<22;
case AMOVF+ALAST: return 0xac<<22;
case AMOVD+ALAST: return 0xae<<22;
case ASLLV:
case ASLLV+ALAST: return 0x41<<16;
case ASRLV:
case ASRLV+ALAST: return 0x45<<16;
case ASRAV:
case ASRAV+ALAST: return 0x49<<16;
case ALU52ID: return 0xc<<22;
}
if(a >= ALAST)
diag("bad irr %A+ALAST", a-ALAST);
else
diag("bad irr %A", a);
return 0;
}
int
vshift(int a)
{
switch(a){
case ASLLV: return 1;
case ASRLV: return 1;
case ASRAV: return 1;
}
return 0;
}