ref: a600cca5ff367ca7e7c64a14a8e87ba376780f6d
dir: /libinterp/xec.c/
#include <lib9.h>
#include "isa.h"
#include "interp.h"
#include "raise.h"
#include "pool.h"
REG R; /* Virtual Machine registers */
String snil; /* String known to be zero length */
#define Stmp *((WORD*)(R.FP+NREG*IBY2WD))
#define Dtmp *((WORD*)(R.FP+(NREG+2)*IBY2WD))
#define OP(fn) void fn(void)
#define B(r) *((BYTE*)(R.r))
#define W(r) *((WORD*)(R.r))
#define UW(r) *((UWORD*)(R.r))
#define F(r) *((REAL*)(R.r))
#define V(r) *((LONG*)(R.r))
#define UV(r) *((ULONG*)(R.r))
#define S(r) *((String**)(R.r))
#define A(r) *((Array**)(R.r))
#define L(r) *((List**)(R.r))
#define P(r) *((WORD**)(R.r))
#define C(r) *((Channel**)(R.r))
#define T(r) *((void**)(R.r))
#define JMP(r) R.PC = *(Inst**)(R.r)
#define SH(r) *((SHORT*)(R.r))
#define SR(r) *((SREAL*)(R.r))
OP(runt) {}
OP(negf) { F(d) = -F(s); }
OP(jmp) { JMP(d); }
OP(movpc){ T(d) = &R.M->prog[W(s)]; }
OP(movm) { memmove(R.d, R.s, W(m)); }
OP(lea) { W(d) = (WORD)R.s; }
OP(movb) { B(d) = B(s); }
OP(movw) { W(d) = W(s); }
OP(movf) { F(d) = F(s); }
OP(movl) { V(d) = V(s); }
OP(cvtbw){ W(d) = B(s); }
OP(cvtwb){ B(d) = W(s); }
OP(cvtrf){ F(d) = SR(s); }
OP(cvtfr){ SR(d) = F(s); }
OP(cvtws){ SH(d) = W(s); }
OP(cvtsw){ W(d) = SH(s); }
OP(cvtwf){ F(d) = W(s); }
OP(addb) { B(d) = B(m) + B(s); }
OP(addw) { W(d) = W(m) + W(s); }
OP(addl) { V(d) = V(m) + V(s); }
OP(addf) { F(d) = F(m) + F(s); }
OP(subb) { B(d) = B(m) - B(s); }
OP(subw) { W(d) = W(m) - W(s); }
OP(subl) { V(d) = V(m) - V(s); }
OP(subf) { F(d) = F(m) - F(s); }
OP(divb) { B(d) = B(m) / B(s); }
OP(divw) { W(d) = W(m) / W(s); }
OP(divl) { V(d) = V(m) / V(s); }
OP(divf) { F(d) = F(m) / F(s); }
OP(modb) { B(d) = B(m) % B(s); }
OP(modw) { W(d) = W(m) % W(s); }
OP(modl) { V(d) = V(m) % V(s); }
OP(mulb) { B(d) = B(m) * B(s); }
OP(mulw) { W(d) = W(m) * W(s); }
OP(mull) { V(d) = V(m) * V(s); }
OP(mulf) { F(d) = F(m) * F(s); }
OP(andb) { B(d) = B(m) & B(s); }
OP(andw) { W(d) = W(m) & W(s); }
OP(andl) { V(d) = V(m) & V(s); }
OP(xorb) { B(d) = B(m) ^ B(s); }
OP(xorw) { W(d) = W(m) ^ W(s); }
OP(xorl) { V(d) = V(m) ^ V(s); }
OP(orb) { B(d) = B(m) | B(s); }
OP(orw) { W(d) = W(m) | W(s); }
OP(orl) { V(d) = V(m) | V(s); }
OP(shlb) { B(d) = B(m) << W(s); }
OP(shlw) { W(d) = W(m) << W(s); }
OP(shll) { V(d) = V(m) << W(s); }
OP(shrb) { B(d) = B(m) >> W(s); }
OP(shrw) { W(d) = W(m) >> W(s); }
OP(shrl) { V(d) = V(m) >> W(s); }
OP(lsrw) { W(d) = UW(m) >> W(s); }
OP(lsrl) { V(d) = UV(m) >> W(s); }
OP(beqb) { if(B(s) == B(m)) JMP(d); }
OP(bneb) { if(B(s) != B(m)) JMP(d); }
OP(bltb) { if(B(s) < B(m)) JMP(d); }
OP(bleb) { if(B(s) <= B(m)) JMP(d); }
OP(bgtb) { if(B(s) > B(m)) JMP(d); }
OP(bgeb) { if(B(s) >= B(m)) JMP(d); }
OP(beqw) { if(W(s) == W(m)) JMP(d); }
OP(bnew) { if(W(s) != W(m)) JMP(d); }
OP(bltw) { if(W(s) < W(m)) JMP(d); }
OP(blew) { if(W(s) <= W(m)) JMP(d); }
OP(bgtw) { if(W(s) > W(m)) JMP(d); }
OP(bgew) { if(W(s) >= W(m)) JMP(d); }
OP(beql) { if(V(s) == V(m)) JMP(d); }
OP(bnel) { if(V(s) != V(m)) JMP(d); }
OP(bltl) { if(V(s) < V(m)) JMP(d); }
OP(blel) { if(V(s) <= V(m)) JMP(d); }
OP(bgtl) { if(V(s) > V(m)) JMP(d); }
OP(bgel) { if(V(s) >= V(m)) JMP(d); }
OP(beqf) { if(F(s) == F(m)) JMP(d); }
OP(bnef) { if(F(s) != F(m)) JMP(d); }
OP(bltf) { if(F(s) < F(m)) JMP(d); }
OP(blef) { if(F(s) <= F(m)) JMP(d); }
OP(bgtf) { if(F(s) > F(m)) JMP(d); }
OP(bgef) { if(F(s) >= F(m)) JMP(d); }
OP(beqc) { if(stringcmp(S(s), S(m)) == 0) JMP(d); }
OP(bnec) { if(stringcmp(S(s), S(m)) != 0) JMP(d); }
OP(bltc) { if(stringcmp(S(s), S(m)) < 0) JMP(d); }
OP(blec) { if(stringcmp(S(s), S(m)) <= 0) JMP(d); }
OP(bgtc) { if(stringcmp(S(s), S(m)) > 0) JMP(d); }
OP(bgec) { if(stringcmp(S(s), S(m)) >= 0) JMP(d); }
OP(iexit){ error(""); }
OP(cvtwl){ V(d) = W(s); }
OP(cvtlw){ W(d) = V(s); }
OP(cvtlf){ F(d) = V(s); }
OP(cvtfl)
{
REAL f;
f = F(s);
V(d) = f < 0 ? f - .5 : f + .5;
}
OP(cvtfw)
{
REAL f;
f = F(s);
W(d) = f < 0 ? f - .5 : f + .5;
}
OP(cvtcl)
{
String *s;
s = S(s);
if(s == H)
V(d) = 0;
else
V(d) = strtoll(string2c(s), nil, 10);
}
OP(iexpw)
{
int inv;
WORD x, n, r;
x = W(m);
n = W(s);
inv = 0;
if(n < 0){
n = -n;
inv = 1;
}
r = 1;
for(;;){
if(n&1)
r *= x;
if((n >>= 1) == 0)
break;
x *= x;
}
if(inv)
r = 1/r;
W(d) = r;
}
OP(iexpl)
{
int inv;
WORD n;
LONG x, r;
x = V(m);
n = W(s);
inv = 0;
if(n < 0){
n = -n;
inv = 1;
}
r = 1;
for(;;){
if(n&1)
r *= x;
if((n >>= 1) == 0)
break;
x *= x;
}
if(inv)
r = 1/r;
V(d) = r;
}
OP(iexpf)
{
int inv;
WORD n;
REAL x, r;
x = F(m);
n = W(s);
inv = 0;
if(n < 0){
n = -n;
inv = 1;
}
r = 1;
for(;;){
if(n&1)
r *= x;
if((n >>= 1) == 0)
break;
x *= x;
}
if(inv)
r = 1/r;
F(d) = r;
}
OP(indx)
{
ulong i;
Array *a;
a = A(s);
i = W(d);
if(a == H || i >= a->len)
error(exBounds);
W(m) = (WORD)(a->data+i*a->t->size);
}
OP(indw)
{
ulong i;
Array *a;
a = A(s);
i = W(d);
if(a == H || i >= a->len)
error(exBounds);
W(m) = (WORD)(a->data+i*sizeof(WORD));
}
OP(indf)
{
ulong i;
Array *a;
a = A(s);
i = W(d);
if(a == H || i >= a->len)
error(exBounds);
W(m) = (WORD)(a->data+i*sizeof(REAL));
}
OP(indl)
{
ulong i;
Array *a;
a = A(s);
i = W(d);
if(a == H || i >= a->len)
error(exBounds);
W(m) = (WORD)(a->data+i*sizeof(LONG));
}
OP(indb)
{
ulong i;
Array *a;
a = A(s);
i = W(d);
if(a == H || i >= a->len)
error(exBounds);
W(m) = (WORD)(a->data+i*sizeof(BYTE));
}
OP(movp)
{
Heap *h;
WORD *dv, *sv;
sv = P(s);
if(sv != H) {
h = D2H(sv);
h->ref++;
Setmark(h);
}
dv = P(d);
P(d) = sv;
destroy(dv);
}
OP(movmp)
{
Type *t;
t = R.M->type[W(m)];
incmem(R.s, t);
if (t->np)
freeptrs(R.d, t);
memmove(R.d, R.s, t->size);
}
OP(new)
{
Heap *h;
WORD **wp, *t;
h = heap(R.M->type[W(s)]);
wp = R.d;
t = *wp;
*wp = H2D(WORD*, h);
destroy(t);
}
OP(newz)
{
Heap *h;
WORD **wp, *t;
h = heapz(R.M->type[W(s)]);
wp = R.d;
t = *wp;
*wp = H2D(WORD*, h);
destroy(t);
}
OP(mnewz)
{
Heap *h;
WORD **wp, *t;
Modlink *ml;
ml = *(Modlink**)R.s;
if(ml == H)
error(exModule);
h = heapz(ml->type[W(m)]);
wp = R.d;
t = *wp;
*wp = H2D(WORD*, h);
destroy(t);
}
OP(frame)
{
Type *t;
Frame *f;
uchar *nsp;
t = R.M->type[W(s)];
nsp = R.SP + t->size;
if(nsp >= R.TS) {
R.s = t;
extend();
T(d) = R.s;
return;
}
f = (Frame*)R.SP;
R.SP = nsp;
f->t = t;
f->mr = nil;
if (t->np)
initmem(t, f);
T(d) = f;
}
OP(mframe)
{
Type *t;
Frame *f;
uchar *nsp;
Modlink *ml;
int o;
ml = *(Modlink**)R.s;
if(ml == H)
error(exModule);
o = W(m);
if(o >= 0){
if(o >= ml->nlinks)
error("invalid mframe");
t = ml->links[o].frame;
}
else
t = ml->m->ext[-o-1].frame;
nsp = R.SP + t->size;
if(nsp >= R.TS) {
R.s = t;
extend();
T(d) = R.s;
return;
}
f = (Frame*)R.SP;
R.SP = nsp;
f->t = t;
f->mr = nil;
if (t->np)
initmem(t, f);
T(d) = f;
}
void
acheck(int tsz, int sz)
{
if(sz < 0)
error(exNegsize);
/* test for overflow; assumes sz >>> tsz */
if((int)(sizeof(Array) + sizeof(Heap) + tsz*sz) < sz && tsz != 0)
error(exHeap);
}
OP(newa)
{
int sz;
Type *t;
Heap *h;
Array *a, *at, **ap;
t = R.M->type[W(m)];
sz = W(s);
acheck(t->size, sz);
h = nheap(sizeof(Array) + (t->size*sz));
h->t = &Tarray;
Tarray.ref++;
a = H2D(Array*, h);
a->t = t;
a->len = sz;
a->root = H;
a->data = (uchar*)a + sizeof(Array);
initarray(t, a);
ap = R.d;
at = *ap;
*ap = a;
destroy(at);
}
OP(newaz)
{
int sz;
Type *t;
Heap *h;
Array *a, *at, **ap;
t = R.M->type[W(m)];
sz = W(s);
acheck(t->size, sz);
h = nheap(sizeof(Array) + (t->size*sz));
h->t = &Tarray;
Tarray.ref++;
a = H2D(Array*, h);
a->t = t;
a->len = sz;
a->root = H;
a->data = (uchar*)a + sizeof(Array);
memset(a->data, 0, t->size*sz);
initarray(t, a);
ap = R.d;
at = *ap;
*ap = a;
destroy(at);
}
Channel*
cnewc(Type *t, void (*mover)(void), int len)
{
Heap *h;
Channel *c;
h = heap(&Tchannel);
c = H2D(Channel*, h);
c->send = malloc(sizeof(Progq));
c->recv = malloc(sizeof(Progq));
if(c->send == nil || c->recv == nil){
free(c->send);
free(c->recv);
error(exNomem);
}
c->send->prog = c->recv->prog = nil;
c->send->next = c->recv->next = nil;
c->mover = mover;
c->buf = H;
if(len > 0)
c->buf = H2D(Array*, heaparray(t, len));
c->front = 0;
c->size = 0;
if(mover == movtmp){
c->mid.t = t;
t->ref++;
}
return c;
}
Channel*
newc(Type *t, void (*mover)(void))
{
Channel **cp, *oldc;
WORD len;
len = 0;
if(R.m != R.d){
len = W(m);
if(len < 0)
error(exNegsize);
}
cp = R.d;
oldc = *cp;
*cp = cnewc(t, mover, len);
destroy(oldc);
return *cp;
}
OP(newcl) { newc(&Tlong, movl); }
OP(newcb) { newc(&Tbyte, movb); }
OP(newcw) { newc(&Tword, movw); }
OP(newcf) { newc(&Treal, movf); }
OP(newcp) { newc(&Tptr, movp); }
OP(newcm)
{
Channel *c;
Type *t;
t = nil;
if(R.m != R.d && W(m) > 0)
t = dtype(nil, W(s), nil, 0);
c = newc(t, movm);
c->mid.w = W(s);
if(t != nil)
freetype(t);
}
OP(newcmp)
{
newc(R.M->type[W(s)], movtmp);
}
OP(icase)
{
WORD v, *t, *l, d, n, n2;
v = W(s);
t = (WORD*)((WORD)R.d + IBY2WD);
n = t[-1];
d = t[n*3];
while(n > 0) {
n2 = n >> 1;
l = t + n2*3;
if(v < l[0]) {
n = n2;
continue;
}
if(v >= l[1]) {
t = l+3;
n -= n2 + 1;
continue;
}
d = l[2];
break;
}
if(R.M->compiled) {
R.PC = (Inst*)d;
return;
}
R.PC = R.M->prog + d;
}
OP(casel)
{
WORD *t, *l, d, n, n2;
LONG v;
v = V(s);
t = (WORD*)((WORD)R.d + 2*IBY2WD);
n = t[-2];
d = t[n*6];
while(n > 0) {
n2 = n >> 1;
l = t + n2*6;
if(v < ((LONG*)l)[0]) {
n = n2;
continue;
}
if(v >= ((LONG*)l)[1]) {
t = l+6;
n -= n2 + 1;
continue;
}
d = l[4];
break;
}
if(R.M->compiled) {
R.PC = (Inst*)d;
return;
}
R.PC = R.M->prog + d;
}
OP(casec)
{
WORD *l, *t, *e, n, n2, r;
String *sl, *sh, *sv;
sv = S(s);
t = (WORD*)((WORD)R.d + IBY2WD);
n = t[-1];
e = t + n*3;
if(n > 2){
while(n > 0){
n2 = n>>1;
l = t + n2*3;
sl = (String*)l[0];
r = stringcmp(sv, sl);
if(r == 0){
e = &l[2];
break;
}
if(r < 0){
n = n2;
continue;
}
sh = (String*)l[1];
if(sh == H || stringcmp(sv, sh) > 0){
t = l+3;
n -= n2+1;
continue;
}
e = &l[2];
break;
}
t = e;
}
else{
while(t < e) {
sl = (String*)t[0];
sh = (String*)t[1];
if(sh == H) {
if(stringcmp(sl, sv) == 0) {
t = &t[2];
goto found;
}
}
else
if(stringcmp(sl, sv) <= 0 && stringcmp(sh, sv) >= 0) {
t = &t[2];
goto found;
}
t += 3;
}
}
found:
if(R.M->compiled) {
R.PC = (Inst*)*t;
return;
}
R.PC = R.M->prog + t[0];
}
OP(igoto)
{
WORD *t;
t = (WORD*)((WORD)R.d + (W(s) * IBY2WD));
if(R.M->compiled) {
R.PC = (Inst*)t[0];
return;
}
R.PC = R.M->prog + t[0];
}
OP(call)
{
Frame *f;
f = T(s);
f->lr = R.PC;
f->fp = R.FP;
R.FP = (uchar*)f;
JMP(d);
}
OP(spawn)
{
Prog *p;
p = newprog(currun(), R.M);
p->R.PC = *(Inst**)R.d;
newstack(p);
unframe();
}
OP(mspawn)
{
Prog *p;
Modlink *ml;
int o;
ml = *(Modlink**)R.d;
if(ml == H)
error(exModule);
if(ml->prog == nil)
error(exSpawn);
p = newprog(currun(), ml);
o = W(m);
if(o >= 0)
p->R.PC = ml->links[o].u.pc;
else
p->R.PC = ml->m->ext[-o-1].u.pc;
newstack(p);
unframe();
}
OP(ret)
{
Frame *f;
Modlink *m;
f = (Frame*)R.FP;
R.FP = f->fp;
if(R.FP == nil) {
R.FP = (uchar*)f;
error("");
}
R.SP = (uchar*)f;
R.PC = f->lr;
m = f->mr;
if(f->t == nil)
unextend(f);
else if (f->t->np)
freeptrs(f, f->t);
if(m != nil) {
if(R.M->compiled != m->compiled) {
R.IC = 1;
R.t = 1;
}
destroy(R.M);
R.M = m;
R.MP = m->MP;
}
}
OP(iload)
{
char *n;
Import *ldt;
Module *m;
Modlink *ml, **mp, *t;
Heap *h;
n = string2c(S(s));
m = R.M->m;
if(m->rt & HASLDT)
ldt = m->ldt[W(m)];
else{
ldt = nil;
error("obsolete dis");
}
if(strcmp(n, "$self") == 0) {
m->ref++;
ml = linkmod(m, ldt, 0);
if(ml != H) {
ml->MP = R.M->MP;
h = D2H(ml->MP);
h->ref++;
Setmark(h);
}
}
else {
m = readmod(n, lookmod(n), 1);
ml = linkmod(m, ldt, 1);
}
mp = R.d;
t = *mp;
*mp = ml;
destroy(t);
}
OP(mcall)
{
Heap *h;
Prog *p;
Frame *f;
Linkpc *l;
Modlink *ml;
int o;
ml = *(Modlink**)R.d;
if(ml == H)
error(exModule);
f = T(s);
f->lr = R.PC;
f->fp = R.FP;
f->mr = R.M;
R.FP = (uchar*)f;
R.M = ml;
h = D2H(ml);
h->ref++;
o = W(m);
if(o >= 0)
l = &ml->links[o].u;
else
l = &ml->m->ext[-o-1].u;
if(ml->prog == nil) {
l->runt(f);
h->ref--;
R.M = f->mr;
R.SP = R.FP;
R.FP = f->fp;
if(f->t == nil)
unextend(f);
else if (f->t->np)
freeptrs(f, f->t);
p = currun();
if(p->kill != nil)
error(p->kill);
R.t = 0;
return;
}
R.MP = R.M->MP;
R.PC = l->pc;
R.t = 1;
if(f->mr->compiled != R.M->compiled)
R.IC = 1;
}
OP(lena)
{
WORD l;
Array *a;
a = A(s);
l = 0;
if(a != H)
l = a->len;
W(d) = l;
}
OP(lenl)
{
WORD l;
List *a;
a = L(s);
l = 0;
while(a != H) {
l++;
a = a->tail;
}
W(d) = l;
}
static int
cgetb(Channel *c, void *v)
{
Array *a;
void *w;
if((a = c->buf) == H)
return 0;
if(c->size > 0){
w = a->data+c->front*a->t->size;
c->front++;
if(c->front == c->buf->len)
c->front = 0;
c->size--;
R.s = w;
R.m = &c->mid;
R.d = v;
c->mover();
if(a->t->np){
freeptrs(w, a->t);
initmem(a->t, w);
}
return 1;
}
return 0;
}
static int
cputb(Channel *c, void *v)
{
Array *a;
WORD len, r;
if((a = c->buf) == H)
return 0;
len = c->buf->len;
if(c->size < len){
r = c->front+c->size;
if(r >= len)
r -= len;
c->size++;
R.s = v;
R.m = &c->mid;
R.d = a->data+r*a->t->size;
c->mover();
return 1;
}
return 0;
}
/*
int
cqsize(Progq *q)
{
int n;
n = 0;
for( ; q != nil; q = q->next)
if(q->prog != nil)
n++;
return n;
}
*/
void
cqadd(Progq **q, Prog *p)
{
Progq *n;
if((*q)->prog == nil){
(*q)->prog = p;
return;
}
n = (Progq*)malloc(sizeof(Progq));
if(n == nil)
error(exNomem);
n->prog = p;
n->next = nil;
for( ; *q != nil; q = &(*q)->next)
;
*q = n;
}
void
cqdel(Progq **q)
{
Progq *f;
if((*q)->next == nil){
(*q)->prog = nil;
return;
}
f = *q;
*q = f->next;
free(f);
}
void
cqdelp(Progq **q, Prog *p)
{
Progq *f;
if((*q)->next == nil){
if((*q)->prog == p)
(*q)->prog = nil;
return;
}
for( ; *q != nil; ){
if((*q)->prog == p){
f = *q;
*q = (*q)->next;
free(f);
}
else
q = &(*q)->next;
}
}
OP(isend)
{
Channel *c;
Prog *p;
c = C(d);
if(c == H)
error(exNilref);
if((p = c->recv->prog) == nil) {
if(c->buf != H && cputb(c, R.s))
return;
p = delrun(Psend);
p->ptr = R.s;
p->chan = c; /* for killprog */
R.IC = 1;
R.t = 1;
cqadd(&c->send, p);
return;
}
if(c->buf != H && c->size > 0)
print("non-empty buffer in isend\n");
cqdel(&c->recv);
if(p->state == Palt)
altdone(p->R.s, p, c, 1);
R.m = &c->mid;
R.d = p->ptr;
p->ptr = nil;
c->mover();
addrun(p);
R.t = 0;
}
OP(irecv)
{
Channel *c;
Prog *p;
c = C(s);
if(c == H)
error(exNilref);
if((p = c->send->prog) == nil) {
if(c->buf != H && cgetb(c, R.d))
return;
p = delrun(Precv);
p->ptr = R.d;
p->chan = c; /* for killprog */
R.IC = 1;
R.t = 1;
cqadd(&c->recv, p);
return;
}
if(c->buf != H && c->size != c->buf->len)
print("non-full buffer in irecv\n");
cqdel(&c->send);
if(p->state == Palt)
altdone(p->R.s, p, c, 0);
if(c->buf != H){
cgetb(c, R.d);
cputb(c, p->ptr);
p->ptr = nil;
}
else{
R.m = &c->mid;
R.s = p->ptr;
p->ptr = nil;
c->mover();
}
addrun(p);
R.t = 0;
}
int
csendalt(Channel *c, void *ip, Type *t, int len)
{
REG rsav;
if(c == H)
error(exNilref);
if(c->recv->prog == nil && (c->buf == H || c->size == c->buf->len)){
if(c->buf != H){
print("csendalt failed\n");
freeptrs(ip, t);
return 0;
}
c->buf = H2D(Array*, heaparray(t, len));
}
rsav = R;
R.s = ip;
R.d = &c;
isend();
R = rsav;
freeptrs(ip, t);
return 1;
}
List*
cons(ulong size, List **lp)
{
Heap *h;
List *lv, *l;
h = nheap(sizeof(List) + size - sizeof(((List*)0)->data));
h->t = &Tlist;
Tlist.ref++;
l = H2D(List*, h);
l->t = nil;
lv = *lp;
if(lv != H) {
h = D2H(lv);
Setmark(h);
}
l->tail = lv;
*lp = l;
return l;
}
OP(consb)
{
List *l;
l = cons(IBY2WD, R.d);
*(BYTE*)l->data = B(s);
}
OP(consw)
{
List *l;
l = cons(IBY2WD, R.d);
*(WORD*)l->data = W(s);
}
OP(consl)
{
List *l;
l = cons(IBY2LG, R.d);
*(LONG*)l->data = V(s);
}
OP(consp)
{
List *l;
Heap *h;
WORD *sv;
l = cons(IBY2WD, R.d);
sv = P(s);
if(sv != H) {
h = D2H(sv);
h->ref++;
Setmark(h);
}
l->t = &Tptr;
Tptr.ref++;
*(WORD**)l->data = sv;
}
OP(consf)
{
List *l;
l = cons(sizeof(REAL), R.d);
*(REAL*)l->data = F(s);
}
OP(consm)
{
int v;
List *l;
v = W(m);
l = cons(v, R.d);
memmove(l->data, R.s, v);
}
OP(consmp)
{
List *l;
Type *t;
t = R.M->type[W(m)];
l = cons(t->size, R.d);
incmem(R.s, t);
memmove(l->data, R.s, t->size);
l->t = t;
t->ref++;
}
OP(headb)
{
List *l;
l = L(s);
B(d) = *(BYTE*)l->data;
}
OP(headw)
{
List *l;
l = L(s);
W(d) = *(WORD*)l->data;
}
OP(headl)
{
List *l;
l = L(s);
V(d) = *(LONG*)l->data;
}
OP(headp)
{
List *l;
l = L(s);
R.s = l->data;
movp();
}
OP(headf)
{
List *l;
l = L(s);
F(d) = *(REAL*)l->data;
}
OP(headm)
{
List *l;
l = L(s);
memmove(R.d, l->data, W(m));
}
OP(headmp)
{
List *l;
l = L(s);
R.s = l->data;
movmp();
}
OP(tail)
{
List *l;
l = L(s);
R.s = &l->tail;
movp();
}
OP(slicea)
{
Type *t;
Heap *h;
Array *at, *ss, *ds;
int v, n, start;
v = W(m);
start = W(s);
n = v - start;
ds = A(d);
if(ds == H) {
if(n == 0)
return;
error(exNilref);
}
if(n < 0 || (ulong)start > ds->len || (ulong)v > ds->len)
error(exBounds);
t = ds->t;
h = heap(&Tarray);
ss = H2D(Array*, h);
ss->len = n;
ss->data = ds->data + start*t->size;
ss->t = t;
t->ref++;
if(ds->root != H) { /* slicing a slice */
ds = ds->root;
h = D2H(ds);
h->ref++;
at = A(d);
A(d) = ss;
ss->root = ds;
destroy(at);
}
else {
h = D2H(ds);
ss->root = ds;
A(d) = ss;
}
Setmark(h);
}
OP(slicela)
{
Type *t;
int l, dl;
Array *ss, *ds;
uchar *sp, *dp, *ep;
ss = A(s);
dl = W(m);
ds = A(d);
if(ss == H)
return;
if(ds == H)
error(exNilref);
if(dl < 0 || dl+ss->len > ds->len)
error(exBounds);
t = ds->t;
if(t->np == 0) {
memmove(ds->data+dl*t->size, ss->data, ss->len*t->size);
return;
}
sp = ss->data;
dp = ds->data+dl*t->size;
if(dp > sp) {
l = ss->len * t->size;
sp = ss->data + l;
ep = dp + l;
while(ep > dp) {
ep -= t->size;
sp -= t->size;
incmem(sp, t);
if (t->np)
freeptrs(ep, t);
}
}
else {
ep = dp + ss->len*t->size;
while(dp < ep) {
incmem(sp, t);
if (t->np)
freeptrs(dp, t);
dp += t->size;
sp += t->size;
}
}
memmove(ds->data+dl*t->size, ss->data, ss->len*t->size);
}
OP(alt)
{
R.t = 0;
xecalt(1);
}
OP(nbalt)
{
xecalt(0);
}
OP(tcmp)
{
void *s, *d;
s = T(s);
d = T(d);
if(s != H && (d == H || D2H(s)->t != D2H(d)->t))
error(exTcheck);
}
OP(eclr)
{
/* spare slot */
}
OP(badop)
{
error(exOp);
}
OP(iraise)
{
void *v;
Heap *h;
Prog *p;
p = currun();
v = T(s);
if(v == H)
error(exNilref);
p->exval = v;
h = D2H(v);
h->ref++;
if(h->t == &Tstring)
error(string2c((String*)v));
else
error(string2c(*(String**)v));
}
OP(mulx)
{
WORD p;
LONG r;
p = Dtmp;
r = (LONG)W(m)*(LONG)W(s);
if(p >= 0)
r <<= p;
else
r >>= (-p);
W(d) = (WORD)r;
}
OP(divx)
{
WORD p;
LONG s;
p = Dtmp;
s = (LONG)W(m);
if(p >= 0)
s <<= p;
else
s >>= (-p);
s /= (LONG)W(s);
W(d) = (WORD)s;
}
OP(cvtxx)
{
WORD p;
LONG r;
p = W(m);
r = (LONG)W(s);
if(p >= 0)
r <<= p;
else
r >>= (-p);
W(d) = (WORD)r;
}
OP(mulx0)
{
WORD x, y, p, a;
LONG r;
x = W(m);
y = W(s);
p = Dtmp;
a = Stmp;
if(x == 0 || y == 0){
W(d) = 0;
return;
}
r = (LONG)x*(LONG)y;
if(p >= 0)
r <<= p;
else
r >>= (-p);
r /= (LONG)a;
W(d) = (WORD)r;
}
OP(divx0)
{
WORD x, y, p, b;
LONG s;
x = W(m);
y = W(s);
p = Dtmp;
b = Stmp;
if(x == 0){
W(d) = 0;
return;
}
s = (LONG)b*(LONG)x;
if(p >= 0)
s <<= p;
else
s >>= (-p);
s /= (LONG)y;
W(d) = (WORD)s;
}
OP(cvtxx0)
{
WORD x, p, a;
LONG r;
x = W(s);
p = W(m);
a = Stmp;
if(x == 0){
W(d) = 0;
return;
}
r = (LONG)x;
if(p >= 0)
r <<= p;
else
r >>= (-p);
r /= (LONG)a;
W(d) = (WORD)r;
}
OP(mulx1)
{
WORD x, y, p, a, v;
int vnz, wnz;
LONG w, r;
x = W(m);
y = W(s);
p = Dtmp;
a = Stmp;
if(x == 0 || y == 0){
W(d) = 0;
return;
}
vnz = p&2;
wnz = p&1;
p >>= 2;
v = 0;
w = 0;
if(vnz){
v = a-1;
if(x >= 0 && y < 0 || x < 0 && y >= 0)
v = -v;
}
if(wnz){
if((!vnz && (x > 0 && y < 0 || x < 0 && y > 0)) ||
(vnz && (x > 0 && y > 0 || x < 0 && y < 0)))
w = ((LONG)1<<(-p)) - 1;
}
r = (LONG)x*(LONG)y + w;
if(p >= 0)
r <<= p;
else
r >>= (-p);
r += (LONG)v;
r /= (LONG)a;
W(d) = (WORD)r;
}
OP(divx1)
{
WORD x, y, p, b, v;
int vnz, wnz;
LONG w, s;
x = W(m);
y = W(s);
p = Dtmp;
b = Stmp;
if(x == 0){
W(d) = 0;
return;
}
vnz = p&2;
wnz = p&1;
p >>= 2;
v = 0;
w = 0;
if(vnz){
v = 1;
if(x >= 0 && y < 0 || x < 0 && y >= 0)
v = -v;
}
if(wnz){
if(x <= 0)
w = ((LONG)1<<(-p)) - 1;
}
s = (LONG)b*(LONG)x + w;
if(p >= 0)
s <<= p;
else
s >>= (-p);
s /= (LONG)y;
W(d) = (WORD)s + v;
}
OP(cvtxx1)
{
WORD x, p, a, v;
int vnz, wnz;
LONG w, r;
x = W(s);
p = W(m);
a = Stmp;
if(x == 0){
W(d) = 0;
return;
}
vnz = p&2;
wnz = p&1;
p >>= 2;
v = 0;
w = 0;
if(vnz){
v = a-1;
if(x < 0)
v = -v;
}
if(wnz){
if(!vnz && x < 0 || vnz && x > 0)
w = ((LONG)1<<(-p)) - 1;
}
r = (LONG)x + w;
if(p >= 0)
r <<= p;
else
r >>= (-p);
r += (LONG)v;
r /= (LONG)a;
W(d) = (WORD)r;
}
/*
OP(cvtxx)
{
REAL v;
v = (REAL)W(s)*F(m);
v = v < 0 ? v-0.5: v+0.5;
W(d) = (WORD)v;
}
*/
OP(cvtfx)
{
REAL v;
v = F(s)*F(m);
v = v < 0 ? v-0.5: v+0.5;
W(d) = (WORD)v;
}
OP(cvtxf)
{
F(d) = (REAL)W(s)*F(m);
}
OP(self)
{
Modlink *ml, **mp, *t;
Heap *h;
ml = R.M;
h = D2H(ml);
h->ref++;
Setmark(h);
mp = R.d;
t = *mp;
*mp = ml;
destroy(t);
}
void
destroystack(REG *reg)
{
Type *t;
Frame *f, *fp;
Modlink *m;
Stkext *sx;
uchar *ex;
ex = reg->EX;
reg->EX = nil;
while(ex != nil) {
sx = (Stkext*)ex;
fp = sx->reg.tos.fr;
do {
f = (Frame*)reg->FP;
if(f == nil)
break;
reg->FP = f->fp;
t = f->t;
if(t == nil)
t = sx->reg.TR;
m = f->mr;
if (t->np)
freeptrs(f, t);
if(m != nil) {
destroy(reg->M);
reg->M = m;
}
} while(f != fp);
ex = sx->reg.EX;
free(sx);
}
destroy(reg->M);
reg->M = H; /* for devprof */
}
Prog*
isave(void)
{
Prog *p;
p = delrun(Prelease);
p->R = R;
return p;
}
void
irestore(Prog *p)
{
R = p->R;
R.IC = 1;
}
void
movtmp(void) /* Used by send & receive */
{
Type *t;
t = (Type*)W(m);
incmem(R.s, t);
if (t->np)
freeptrs(R.d, t);
memmove(R.d, R.s, t->size);
}
extern OP(cvtca);
extern OP(cvtac);
extern OP(cvtwc);
extern OP(cvtcw);
extern OP(cvtfc);
extern OP(cvtcf);
extern OP(insc);
extern OP(indc);
extern OP(addc);
extern OP(lenc);
extern OP(slicec);
extern OP(cvtlc);
#include "optab.h"
void
opinit(void)
{
int i;
for(i = 0; i < 256; i++)
if(optab[i] == nil)
optab[i] = badop;
}
void
xec(Prog *p)
{
int op;
R = p->R;
R.MP = R.M->MP;
R.IC = p->quanta;
if(p->kill != nil) {
char *m;
m = p->kill;
p->kill = nil;
error(m);
}
// print("%lux %lux %lux %lux %lux\n", (ulong)&R, R.xpc, R.FP, R.MP, R.PC);
if(R.M->compiled)
comvec();
else do {
dec[R.PC->add]();
op = R.PC->op;
R.PC++;
optab[op]();
} while(--R.IC != 0);
p->R = R;
}