ref: 86e0099835f99de6ccc3bee33a297387993aa037
dir: /sys/src/cmd/cc/pickle.c/
#include "cc.h" static char *kwd[] = { "$adt", "$aggr", "$append", "$builtin", "$complex", "$defn", "$delete", "$do", "$else", "$eval", "$head", "$if", "$local", "$loop", "$return", "$tail", "$then", "$union", "$whatis", "$while", }; static char picklestr[] = "\tbp = pickle(bp, ep, un, "; static char* pmap(char *s) { int i, bot, top, new; bot = 0; top = bot + nelem(kwd) - 1; while(bot <= top){ new = bot + (top - bot)/2; i = strcmp(kwd[new]+1, s); if(i == 0) return kwd[new]; if(i < 0) bot = new + 1; else top = new - 1; } return s; } Sym* picklesue(Type *t) { int h; Sym *s; if(t != T) for(h=0; h<nelem(hash); h++) for(s = hash[h]; s != S; s = s->link) if(s->suetag && s->suetag->link == t) return s; return 0; } Sym* picklefun(Type *t) { int h; Sym *s; for(h=0; h<nelem(hash); h++) for(s = hash[h]; s != S; s = s->link) if(s->type == t) return s; return 0; } char picklechar[NTYPE]; Init picklecinit[] = { TCHAR, 'C', 0, TUCHAR, 'b', 0, TSHORT, 'd', 0, TUSHORT, 'u', 0, TLONG, 'D', 0, TULONG, 'U', 0, TVLONG, 'V', 0, TUVLONG, 'W', 0, TFLOAT, 'f', 0, TDOUBLE, 'F', 0, TARRAY, 'a', 0, TIND, 'X', 0, -1, 0, 0, }; static void pickleinit(void) { Init *p; for(p=picklecinit; p->code >= 0; p++) picklechar[p->code] = p->value; picklechar[TINT] = picklechar[TLONG]; picklechar[TUINT] = picklechar[TULONG]; if(types[TINT]->width != types[TLONG]->width) { picklechar[TINT] = picklechar[TSHORT]; picklechar[TUINT] = picklechar[TUSHORT]; if(types[TINT]->width != types[TSHORT]->width) warn(Z, "picklemember int not long or short"); } } void picklemember(Type *t, long off) { Sym *s, *s1; static int picklecharinit = 0; if(picklecharinit == 0) { pickleinit(); picklecharinit = 1; } s = t->sym; switch(t->etype) { default: Bprint(&outbuf, " T%d\n", t->etype); break; case TIND: if(s == S) Bprint(&outbuf, "%s\"p\", (char*)addr+%ld+_i*%ld);\n", picklestr, t->offset+off, t->width); else Bprint(&outbuf, "%s\"p\", &addr->%s);\n", picklestr, pmap(s->name)); break; case TINT: case TUINT: case TCHAR: case TUCHAR: case TSHORT: case TUSHORT: case TLONG: case TULONG: case TVLONG: case TUVLONG: case TFLOAT: case TDOUBLE: if(s == S) Bprint(&outbuf, "%s\"%c\", (char*)addr+%ld+_i*%ld);\n", picklestr, picklechar[t->etype], t->offset+off, t->width); else Bprint(&outbuf, "%s\"%c\", &addr->%s);\n", picklestr, picklechar[t->etype], pmap(s->name)); break; case TARRAY: Bprint(&outbuf, "\tfor(_i = 0; _i < %ld; _i++) {\n\t", t->width/t->link->width); picklemember(t->link, t->offset+off); Bprint(&outbuf, "\t}\n\t_i = 0;\n\tUSED(_i);\n"); break; case TSTRUCT: case TUNION: s1 = picklesue(t->link); if(s1 == S) break; if(s == S) { Bprint(&outbuf, "\tbp = pickle_%s(bp, ep, un, (%s*)((char*)addr+%ld+_i*%ld));\n", pmap(s1->name), pmap(s1->name), t->offset+off, t->width); } else { Bprint(&outbuf, "\tbp = pickle_%s(bp, ep, un, &addr->%s);\n", pmap(s1->name), pmap(s->name)); } break; } } void pickletype(Type *t) { Sym *s; Type *l; Io *i; int n; char *an; if(!debug['P']) return; if(debug['P'] > 1) { n = 0; for(i=iostack; i; i=i->link) n++; if(n > 1) return; } s = picklesue(t->link); if(s == S) return; switch(t->etype) { default: Bprint(&outbuf, "T%d\n", t->etype); return; case TUNION: case TSTRUCT: if(debug['s']) goto asmstr; an = pmap(s->name); Bprint(&outbuf, "uchar*\npickle_%s(uchar *bp, uchar *ep, int un, %s *addr)\n{\n\tint _i = 0;\n\n\tUSED(_i);\n", an, an); for(l = t->link; l != T; l = l->down) picklemember(l, 0); Bprint(&outbuf, "\treturn bp;\n}\n\n"); break; asmstr: if(s == S) break; for(l = t->link; l != T; l = l->down) if(l->sym != S) Bprint(&outbuf, "#define\t%s.%s\t%ld\n", s->name, l->sym->name, l->offset); break; } } void picklevar(Sym *s) { int n; Io *i; Type *t; Sym *s1, *s2; if(!debug['P'] || debug['s']) return; if(debug['P'] > 1) { n = 0; for(i=iostack; i; i=i->link) n++; if(n > 1) return; } t = s->type; while(t && t->etype == TIND) t = t->link; if(t == T) return; if(t->etype == TENUM) { Bprint(&outbuf, "%s = ", pmap(s->name)); if(!typefd[t->etype]) Bprint(&outbuf, "%lld;\n", s->vconst); else Bprint(&outbuf, "%f\n;", s->fconst); return; } if(!typesu[t->etype]) return; s1 = picklesue(t->link); if(s1 == S) return; switch(s->class) { case CAUTO: case CPARAM: s2 = picklefun(thisfn); if(s2) Bprint(&outbuf, "complex %s %s:%s;\n", pmap(s1->name), pmap(s2->name), pmap(s->name)); break; case CSTATIC: case CEXTERN: case CGLOBL: case CLOCAL: Bprint(&outbuf, "complex %s %s;\n", pmap(s1->name), pmap(s->name)); break; } }