ref: 02ac617541ca1a7bf82b1615fb5a58235469b5d3
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; }