pike.git/src/interpreter.h:9b343298523b500423872d890dbddf36dfdd92fc

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1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 #undef GET_ARG #undef GET_ARG2 #ifdef PIKE_DEBUG #define GET_ARG() (backlog[backlogp].arg=(\ instr=prefix,\ prefix=0,\ instr+=EXTRACT_UCHAR(pc++),\ (t_flag>3 ? sprintf(trace_buffer,"- Arg = %ld\n",(long)instr),write_to_stderr(trace_buffer,strlen(trace_buffer)) : 0),\ instr)) #define GET_ARG2() (\ instr=EXTRACT_UCHAR(pc++),\ (t_flag>3 ? sprintf(trace_buffer,"- Arg2= %ld\n",(long)instr),write_to_stderr(trace_buffer,strlen(trace_buffer)) : 0),\ instr) #else #define GET_ARG() (instr=prefix,prefix=0,instr+EXTRACT_UCHAR(pc++)) #define GET_ARG2() EXTRACT_UCHAR(pc++) #endif static int eval_instruction(unsigned char *pc) { unsigned INT32 accumulator=0,instr, prefix=0; debug_malloc_touch(fp); while(1) { fp->pc = pc; instr=EXTRACT_UCHAR(pc++); #ifdef PIKE_DEBUG if(d_flag) { #ifdef _REENTRANT #ifndef __NT__ if(!mt_trylock(& interpreter_lock)) fatal("Interpreter running unlocked!\n"); #endif if(d_flag>1 && thread_for_id(th_self()) != thread_id) fatal("thread_for_id() (or thread_id) failed in interpreter.h! %p != %p\n",thread_for_id(th_self()),thread_id); #endif sp[0].type=99; /* an invalid type */ sp[1].type=99; sp[2].type=99; sp[3].type=99; if(sp<evaluator_stack || mark_sp < mark_stack || fp->locals>sp) fatal("Stack error (generic).\n"); if(sp > evaluator_stack+stack_size) fatal("Stack error (overflow).\n"); if(fp->fun>=0 && fp->current_object->prog && fp->locals+fp->num_locals > sp) fatal("Stack error (stupid!).\n"); if(recoveries && sp-evaluator_stack < recoveries->sp) fatal("Stack error (underflow).\n"); if(mark_sp > mark_stack && mark_sp[-1] > sp) fatal("Stack error (underflow?)\n"); if(d_flag > 9) do_debug(); backlogp++; if(backlogp >= BACKLOG) backlogp=0; if(backlog[backlogp].program) free_program(backlog[backlogp].program); backlog[backlogp].program=fp->context.prog; add_ref(fp->context.prog); backlog[backlogp].instruction=instr; backlog[backlogp].arg=0; backlog[backlogp].pc=pc; debug_malloc_touch(fp->current_object); switch(d_flag) { default: case 3: check_object(fp->current_object); /* break; */ case 2: check_object_context(fp->current_object, fp->context.prog, fp->current_storage); case 1: case 0: break; } } if(t_flag > 2) { char *file, *f; INT32 linep; file=get_line(pc-1,fp->context.prog,&linep); while((f=STRCHR(file,'/'))) file=f+1; fprintf(stderr,"- %s:%4ld:(%lx): %-25s %4ld %4ld\n", file,(long)linep, (long)(pc-fp->context.prog->program-1), get_f_name(instr + F_OFFSET), (long)(sp-evaluator_stack), (long)(mark_sp-mark_stack)); } if(instr + F_OFFSET < F_MAX_OPCODE) ADD_RUNNED(instr + F_OFFSET); #endif switch(instr) { /* Support to allow large arguments */ CASE(F_PREFIX_256); prefix+=256; break; CASE(F_PREFIX_512); prefix+=512; break; CASE(F_PREFIX_768); prefix+=768; break; CASE(F_PREFIX_1024); prefix+=1024; break; CASE(F_PREFIX_24BITX256); prefix+=EXTRACT_UCHAR(pc++)<<24; CASE(F_PREFIX_WORDX256); prefix+=EXTRACT_UCHAR(pc++)<<16; CASE(F_PREFIX_CHARX256); prefix+=EXTRACT_UCHAR(pc++)<<8; break; CASE(F_LDA); accumulator=GET_ARG(); break; /* Push number */ CASE(F_UNDEFINED); push_int(0); sp[-1].subtype=NUMBER_UNDEFINED; break; CASE(F_CONST0); push_int(0); break; CASE(F_CONST1); push_int(1); break; CASE(F_CONST_1); push_int(-1); break; CASE(F_BIGNUM); push_int(0x7fffffff); break; CASE(F_NUMBER); push_int(GET_ARG()); break; CASE(F_NEG_NUMBER); push_int(-GET_ARG()); break; /* The rest of the basic 'push value' instructions */ CASE(F_MARK_AND_STRING); *(mark_sp++)=sp; CASE(F_STRING); copy_shared_string(sp->u.string,fp->context.prog->strings[GET_ARG()]); sp->type=PIKE_T_STRING; sp->subtype=0; sp++; print_return_value(); break; CASE(F_ARROW_STRING); copy_shared_string(sp->u.string,fp->context.prog->strings[GET_ARG()]); sp->type=PIKE_T_STRING; sp->subtype=1; /* Magic */ sp++; print_return_value(); break; CASE(F_CONSTANT); assign_svalue_no_free(sp++,& fp->context.prog->constants[GET_ARG()].sval); print_return_value(); break; CASE(F_FLOAT); sp->type=PIKE_T_FLOAT; MEMCPY((void *)&sp->u.float_number, pc, sizeof(FLOAT_TYPE)); pc+=sizeof(FLOAT_TYPE); sp++; break; CASE(F_LFUN); sp->u.object=fp->current_object; add_ref(fp->current_object); sp->subtype=GET_ARG()+fp->context.identifier_level; sp->type=PIKE_T_FUNCTION; sp++; print_return_value(); break; CASE(F_TRAMPOLINE); { struct object *o=low_clone(pike_trampoline_program); add_ref( ((struct pike_trampoline *)(o->storage))->frame=fp ); ((struct pike_trampoline *)(o->storage))->func=GET_ARG()+fp->context.identifier_level; push_object(o); print_return_value(); break; } /* The not so basic 'push value' instructions */ CASE(F_GLOBAL); low_object_index_no_free(sp, fp->current_object, GET_ARG() + fp->context.identifier_level); sp++; print_return_value(); break; CASE(F_EXTERNAL); { struct inherit *inherit; struct program *p; struct object *o; INT32 i,id=GET_ARG(); inherit=&fp->context; o=fp->current_object; if(!o) error("Current object is destructed\n"); while(1) { if(inherit->parent_offset) { #ifdef PIKE_DEBUG if(t_flag>4) { sprintf(trace_buffer,"- Following o->parent (accumulator+=%d)\n",inherit->parent_offset-1); write_to_stderr(trace_buffer,strlen(trace_buffer)); } #endif i=o->parent_identifier; o=o->parent; accumulator+=inherit->parent_offset-1; }else{ #ifdef PIKE_DEBUG if(t_flag>4) { sprintf(trace_buffer,"- Following inherit->parent (accumulator+=%d)\n",inherit->parent_offset-1); write_to_stderr(trace_buffer,strlen(trace_buffer)); } #endif i=inherit->parent_identifier; o=inherit->parent; } if(!o) error("Parent was lost during cloning.\n"); if(!(p=o->prog)) error("Attempting to access variable in destructed object\n"); inherit=INHERIT_FROM_INT(p, i); if(!accumulator) break; --accumulator; } low_object_index_no_free(sp, o, id + inherit->identifier_level); sp++; print_return_value(); break; } CASE(F_EXTERNAL_LVALUE); { struct inherit *inherit; struct program *p; struct object *o; INT32 i,id=GET_ARG(); inherit=&fp->context; o=fp->current_object; if(!o) error("Current object is destructed\n"); while(1) { if(inherit->parent_offset) { i=o->parent_identifier; o=o->parent; accumulator+=inherit->parent_offset-1; }else{ i=inherit->parent_identifier; o=inherit->parent; } if(!o) error("Parent no longer exists\n"); if(!(p=o->prog)) error("Attempting to access variable in destructed object\n"); inherit=INHERIT_FROM_INT(p, i); if(!accumulator) break; accumulator--; } ref_push_object(o); sp->type=T_LVALUE; sp->u.integer=id + inherit->identifier_level; sp++; break; } CASE(F_MARK_AND_LOCAL); *(mark_sp++)=sp; CASE(F_LOCAL); assign_svalue_no_free(sp++,fp->locals+GET_ARG()); print_return_value(); break; CASE(F_2_LOCALS); assign_svalue_no_free(sp++,fp->locals+GET_ARG()); print_return_value(); assign_svalue_no_free(sp++,fp->locals+GET_ARG2()); print_return_value(); break; CASE(F_LOCAL_2_LOCAL); { int tmp=GET_ARG(); assign_svalue(fp->locals+tmp, fp->locals+GET_ARG2()); break; } CASE(F_LOCAL_2_GLOBAL); { INT32 tmp=GET_ARG() + fp->context.identifier_level; struct identifier *i; if(!fp->current_object->prog) error("Cannot access global variables in destructed object.\n"); i=ID_FROM_INT(fp->current_object->prog, tmp); if(!IDENTIFIER_IS_VARIABLE(i->identifier_flags)) error("Cannot assign functions or constants.\n"); if(i->run_time_type == T_MIXED) { assign_svalue((struct svalue *)GLOBAL_FROM_INT(tmp), fp->locals + GET_ARG2()); }else{ assign_to_short_svalue((union anything *)GLOBAL_FROM_INT(tmp), i->run_time_type, fp->locals + GET_ARG2()); } break; } CASE(F_GLOBAL_2_LOCAL); { INT32 tmp=GET_ARG() + fp->context.identifier_level; INT32 tmp2=GET_ARG2(); free_svalue(fp->locals + tmp2); low_object_index_no_free(fp->locals + tmp2, fp->current_object, tmp); break; } CASE(F_LOCAL_LVALUE); sp[0].type=T_LVALUE; sp[0].u.lval=fp->locals+GET_ARG(); sp[1].type=T_VOID; sp+=2; break; CASE(F_LEXICAL_LOCAL); { struct pike_frame *f=fp; while(accumulator--) { f=f->scope; if(!f) error("Lexical scope error.\n"); } push_svalue(f->locals + GET_ARG()); print_return_value(); break; } CASE(F_LEXICAL_LOCAL_LVALUE); { struct pike_frame *f=fp; while(accumulator--) { f=f->scope; if(!f) error("Lexical scope error.\n"); } sp[0].type=T_LVALUE; sp[0].u.lval=f->locals+GET_ARG(); sp[1].type=T_VOID; sp+=2; break; } CASE(F_ARRAY_LVALUE); f_aggregate(GET_ARG()*2); sp[-1].u.array->flags |= ARRAY_LVALUE; sp[-1].u.array->type_field |= BIT_UNFINISHED | BIT_MIXED; sp[0]=sp[-1]; sp[-1].type=T_ARRAY_LVALUE; sp++; break; CASE(F_CLEAR_2_LOCAL); instr=GET_ARG(); free_svalues(fp->locals + instr, 2, -1); fp->locals[instr].type=PIKE_T_INT; fp->locals[instr].subtype=0; fp->locals[instr].u.integer=0; fp->locals[instr+1].type=PIKE_T_INT; fp->locals[instr+1].subtype=0; fp->locals[instr+1].u.integer=0; break; CASE(F_CLEAR_4_LOCAL); { int e; instr=GET_ARG(); free_svalues(fp->locals + instr, 4, -1); for(e=0;e<4;e++) { fp->locals[instr+e].type=PIKE_T_INT; fp->locals[instr+e].subtype=0; fp->locals[instr+e].u.integer=0; } break; } CASE(F_CLEAR_LOCAL); instr=GET_ARG(); free_svalue(fp->locals + instr); fp->locals[instr].type=PIKE_T_INT; fp->locals[instr].subtype=0; fp->locals[instr].u.integer=0; break; CASE(F_INC_LOCAL); instr=GET_ARG(); #ifdef AUTO_BIGNUM if(fp->locals[instr].type == PIKE_T_INT && !INT_TYPE_ADD_OVERFLOW(fp->locals[instr].u.integer, 1)) #else if(fp->locals[instr].type == PIKE_T_INT) #endif /* AUTO_BIGNUM */ { fp->locals[instr].u.integer++; assign_svalue_no_free(sp++,fp->locals+instr); } else { assign_svalue_no_free(sp++,fp->locals+instr); push_int(1); f_add(2); assign_svalue(fp->locals+instr,sp-1); } break; CASE(F_POST_INC_LOCAL); instr=GET_ARG(); assign_svalue_no_free(sp++,fp->locals+instr); goto inc_local_and_pop; CASE(F_INC_LOCAL_AND_POP); instr=GET_ARG(); inc_local_and_pop: #ifdef AUTO_BIGNUM if(fp->locals[instr].type == PIKE_T_INT && !INT_TYPE_ADD_OVERFLOW(fp->locals[instr].u.integer, 1)) #else if(fp->locals[instr].type == PIKE_T_INT) #endif /* AUTO_BIGNUM */ { fp->locals[instr].u.integer++; }else{ assign_svalue_no_free(sp++,fp->locals+instr); push_int(1); f_add(2); assign_svalue(fp->locals+instr,sp-1); pop_stack(); } break; CASE(F_DEC_LOCAL); instr=GET_ARG(); #ifdef AUTO_BIGNUM if(fp->locals[instr].type == PIKE_T_INT && !INT_TYPE_SUB_OVERFLOW(fp->locals[instr].u.integer, 1)) #else if(fp->locals[instr].type == PIKE_T_INT) #endif /* AUTO_BIGNUM */ { fp->locals[instr].u.integer--; assign_svalue_no_free(sp++,fp->locals+instr); }else{ assign_svalue_no_free(sp++,fp->locals+instr); push_int(1); o_subtract(); assign_svalue(fp->locals+instr,sp-1); } break; CASE(F_POST_DEC_LOCAL); instr=GET_ARG(); assign_svalue_no_free(sp++,fp->locals+instr); goto dec_local_and_pop; /* fp->locals[instr].u.integer--; */ break; CASE(F_DEC_LOCAL_AND_POP); instr=GET_ARG(); dec_local_and_pop: #ifdef AUTO_BIGNUM if(fp->locals[instr].type == PIKE_T_INT && !INT_TYPE_SUB_OVERFLOW(fp->locals[instr].u.integer, 1)) #else if(fp->locals[instr].type == PIKE_T_INT) #endif /* AUTO_BIGNUM */ { fp->locals[instr].u.integer--; }else{ assign_svalue_no_free(sp++,fp->locals+instr); push_int(1); o_subtract(); assign_svalue(fp->locals+instr,sp-1); pop_stack(); } break; CASE(F_LTOSVAL); lvalue_to_svalue_no_free(sp,sp-2); sp++; break; CASE(F_LTOSVAL2); sp[0]=sp[-1]; sp[-1].type=PIKE_T_INT; sp++; lvalue_to_svalue_no_free(sp-2,sp-4); /* this is so that foo+=bar (and similar things) will be faster, this * is done by freeing the old reference to foo after it has been pushed * on the stack. That way foo can have only 1 reference if we are lucky, * and then the low array/multiset/mapping manipulation routines can be * destructive if they like */ if( (1 << sp[-2].type) & ( BIT_ARRAY | BIT_MULTISET | BIT_MAPPING | BIT_STRING )) { struct svalue s; s.type=PIKE_T_INT; s.subtype=0; s.u.integer=0; assign_lvalue(sp-4,&s); } break; CASE(F_ADD_TO_AND_POP); sp[0]=sp[-1]; sp[-1].type=PIKE_T_INT; sp++; lvalue_to_svalue_no_free(sp-2,sp-4); /* this is so that foo+=bar (and similar things) will be faster, this * is done by freeing the old reference to foo after it has been pushed * on the stack. That way foo can have only 1 reference if we are lucky, * and then the low array/multiset/mapping manipulation routines can be * destructive if they like */ if( (1 << sp[-2].type) & ( BIT_ARRAY | BIT_MULTISET | BIT_MAPPING | BIT_STRING )) { struct svalue s; s.type=PIKE_T_INT; s.subtype=0; s.u.integer=0; assign_lvalue(sp-4,&s); } f_add(2); assign_lvalue(sp-3,sp-1); pop_n_elems(3); break; CASE(F_GLOBAL_LVALUE); { struct identifier *i; INT32 tmp=GET_ARG() + fp->context.identifier_level; if(!fp->current_object->prog) error("Cannot access global variables in destructed object.\n"); i=ID_FROM_INT(fp->current_object->prog, tmp); if(!IDENTIFIER_IS_VARIABLE(i->identifier_flags)) error("Cannot re-assign functions or constants.\n"); if(i->run_time_type == T_MIXED) { sp[0].type=T_LVALUE; sp[0].u.lval=(struct svalue *)GLOBAL_FROM_INT(tmp); }else{ sp[0].type=T_SHORT_LVALUE; sp[0].u.short_lval= (union anything *)GLOBAL_FROM_INT(tmp); sp[0].subtype=i->run_time_type; } sp[1].type=T_VOID; sp+=2; break; } CASE(F_INC); { union anything *u=get_pointer_if_this_type(sp-2, PIKE_T_INT); if(u #ifdef AUTO_BIGNUM && !INT_TYPE_ADD_OVERFLOW(u->integer, 1) #endif ) { instr=++ u->integer; pop_n_elems(2); push_int(u->integer); break; } lvalue_to_svalue_no_free(sp, sp-2); sp++; push_int(1); f_add(2); assign_lvalue(sp-3, sp-1); assign_svalue(sp-3, sp-1); pop_n_elems(2); break; } CASE(F_DEC); { union anything *u=get_pointer_if_this_type(sp-2, PIKE_T_INT); if(u #ifdef AUTO_BIGNUM && !INT_TYPE_SUB_OVERFLOW(u->integer, 1) #endif ) { instr=-- u->integer; pop_n_elems(2); push_int(u->integer); break; } lvalue_to_svalue_no_free(sp, sp-2); sp++; push_int(1); o_subtract(); assign_lvalue(sp-3, sp-1); assign_svalue(sp-3, sp-1); pop_n_elems(2); break; } CASE(F_DEC_AND_POP); { union anything *u=get_pointer_if_this_type(sp-2, PIKE_T_INT); if(u #ifdef AUTO_BIGNUM && !INT_TYPE_SUB_OVERFLOW(u->integer, 1) #endif ) { instr=-- u->integer; pop_n_elems(2); }else{ lvalue_to_svalue_no_free(sp, sp-2); sp++; push_int(1); o_subtract(); assign_lvalue(sp-3, sp-1); pop_n_elems(3); } break; } CASE(F_INC_AND_POP); { union anything *u=get_pointer_if_this_type(sp-2, PIKE_T_INT); if(u #ifdef AUTO_BIGNUM && !INT_TYPE_ADD_OVERFLOW(u->integer, 1) #endif ) { instr=++ u->integer; pop_n_elems(2); break; } lvalue_to_svalue_no_free(sp, sp-2); sp++; push_int(1); f_add(2); assign_lvalue(sp-3, sp-1); pop_n_elems(3); break; } CASE(F_POST_INC); { union anything *u=get_pointer_if_this_type(sp-2, PIKE_T_INT); if(u #ifdef AUTO_BIGNUM && !INT_TYPE_ADD_OVERFLOW(u->integer, 1) #endif ) { instr=u->integer ++; pop_n_elems(2); push_int(instr); break; } lvalue_to_svalue_no_free(sp, sp-2); sp++; assign_svalue_no_free(sp,sp-1); sp++; push_int(1); f_add(2); assign_lvalue(sp-4, sp-1); assign_svalue(sp-4, sp-2); pop_n_elems(3); break; } CASE(F_POST_DEC); { union anything *u=get_pointer_if_this_type(sp-2, PIKE_T_INT); if(u #ifdef AUTO_BIGNUM && !INT_TYPE_SUB_OVERFLOW(u->integer, 1) #endif ) { instr=u->integer --; pop_n_elems(2); push_int(instr); break; } lvalue_to_svalue_no_free(sp, sp-2); sp++; assign_svalue_no_free(sp,sp-1); sp++; push_int(1); o_subtract(); assign_lvalue(sp-4, sp-1); assign_svalue(sp-4, sp-2); pop_n_elems(3); break; } CASE(F_ASSIGN); assign_lvalue(sp-3,sp-1); free_svalue(sp-3); free_svalue(sp-2); sp[-3]=sp[-1]; sp-=2; break; CASE(F_ASSIGN_AND_POP); assign_lvalue(sp-3,sp-1); pop_n_elems(3); break; CASE(F_APPLY_ASSIGN_LOCAL); strict_apply_svalue(fp->context.prog->constants + GET_ARG(), sp - *--mark_sp ); /* Fall through */ CASE(F_ASSIGN_LOCAL); assign_svalue(fp->locals+GET_ARG(),sp-1); break; CASE(F_APPLY_ASSIGN_LOCAL_AND_POP); strict_apply_svalue(fp->context.prog->constants + GET_ARG(), sp - *--mark_sp ); /* Fall through */ CASE(F_ASSIGN_LOCAL_AND_POP); instr=GET_ARG(); free_svalue(fp->locals+instr); fp->locals[instr]=sp[-1]; sp--; break; CASE(F_ASSIGN_GLOBAL) { struct identifier *i; INT32 tmp=GET_ARG() + fp->context.identifier_level; if(!fp->current_object->prog) error("Cannot access global variables in destructed object.\n"); i=ID_FROM_INT(fp->current_object->prog, tmp); if(!IDENTIFIER_IS_VARIABLE(i->identifier_flags)) error("Cannot assign functions or constants.\n"); if(i->run_time_type == T_MIXED) { assign_svalue((struct svalue *)GLOBAL_FROM_INT(tmp), sp-1); }else{ assign_to_short_svalue((union anything *)GLOBAL_FROM_INT(tmp), i->run_time_type, sp-1); } } break; CASE(F_ASSIGN_GLOBAL_AND_POP) { struct identifier *i; INT32 tmp=GET_ARG() + fp->context.identifier_level; if(!fp->current_object->prog) error("Cannot access global variables in destructed object.\n"); i=ID_FROM_INT(fp->current_object->prog, tmp); if(!IDENTIFIER_IS_VARIABLE(i->identifier_flags)) error("Cannot assign functions or constants.\n"); if(i->run_time_type == T_MIXED) { struct svalue *s=(struct svalue *)GLOBAL_FROM_INT(tmp); free_svalue(s); sp--; *s=*sp; }else{ assign_to_short_svalue((union anything *)GLOBAL_FROM_INT(tmp), i->run_time_type, sp-1); pop_stack(); } } break; /* Stack machine stuff */ CASE(F_POP_VALUE); pop_stack(); break; CASE(F_POP_N_ELEMS); pop_n_elems(GET_ARG()); break; CASE(F_MARK2); *(mark_sp++)=sp; CASE(F_MARK); *(mark_sp++)=sp; break; CASE(F_MARK_X); *(mark_sp++)=sp-GET_ARG(); break; CASE(F_POP_MARK); --mark_sp; break; CASE(F_CLEAR_STRING_SUBTYPE); if(sp[-1].type==PIKE_T_STRING) sp[-1].subtype=0; break; /* Jumps */ CASE(F_BRANCH); DOJUMP(); break; CASE(F_BRANCH_IF_NOT_LOCAL_ARROW); { struct svalue tmp; tmp.type=PIKE_T_STRING; tmp.u.string=fp->context.prog->strings[GET_ARG()]; tmp.subtype=1; sp->type=PIKE_T_INT; sp++; index_no_free(sp-1,fp->locals+GET_ARG2() , &tmp); print_return_value(); } /* Fall through */ CASE(F_BRANCH_WHEN_ZERO); if(!IS_ZERO(sp-1)) { pc+=sizeof(INT32); }else{ DOJUMP(); } pop_stack(); break; CASE(F_BRANCH_WHEN_NON_ZERO); if(IS_ZERO(sp-1)) { pc+=sizeof(INT32); }else{ DOJUMP(); } pop_stack(); break; CASE(F_BRANCH_IF_LOCAL); instr=GET_ARG(); if(IS_ZERO(fp->locals + instr)) { pc+=sizeof(INT32); }else{ DOJUMP(); } break; CASE(F_BRANCH_IF_NOT_LOCAL); instr=GET_ARG(); if(!IS_ZERO(fp->locals + instr)) { pc+=sizeof(INT32); }else{ DOJUMP(); } break; CJUMP(F_BRANCH_WHEN_EQ, is_eq); CJUMP(F_BRANCH_WHEN_NE,!is_eq); CJUMP(F_BRANCH_WHEN_LT, is_lt); CJUMP(F_BRANCH_WHEN_LE,!is_gt); CJUMP(F_BRANCH_WHEN_GT, is_gt); CJUMP(F_BRANCH_WHEN_GE,!is_lt); CASE(F_BRANCH_AND_POP_WHEN_ZERO); if(!IS_ZERO(sp-1)) { pc+=sizeof(INT32); }else{ DOJUMP(); pop_stack(); } break; CASE(F_BRANCH_AND_POP_WHEN_NON_ZERO); if(IS_ZERO(sp-1)) { pc+=sizeof(INT32); }else{ DOJUMP(); pop_stack(); } break; CASE(F_LAND); if(!IS_ZERO(sp-1)) { pc+=sizeof(INT32); pop_stack(); }else{ DOJUMP(); } break; CASE(F_LOR); if(IS_ZERO(sp-1)) { pc+=sizeof(INT32); pop_stack(); }else{ DOJUMP(); } break; CASE(F_EQ_OR); if(!is_eq(sp-2,sp-1)) { pop_n_elems(2); pc+=sizeof(INT32); }else{ pop_n_elems(2); push_int(1); DOJUMP(); } break; CASE(F_EQ_AND); if(is_eq(sp-2,sp-1)) { pop_n_elems(2); pc+=sizeof(INT32); }else{ pop_n_elems(2); push_int(0); DOJUMP(); } break; CASE(F_CATCH); if(o_catch(pc+sizeof(INT32))) return -1; /* There was a return inside the evaluated code */ else pc+=EXTRACT_INT(pc); break; CASE(F_THROW_ZERO); push_int(0); f_throw(1); break; CASE(F_SWITCH) { INT32 tmp; tmp=switch_lookup(fp->context.prog-> constants[GET_ARG()].sval.u.array,sp-1); pc=(unsigned char *)DO_ALIGN(pc,sizeof(INT32)); pc+=(tmp>=0 ? 1+tmp*2 : 2*~tmp) * sizeof(INT32); if(*(INT32*)pc < 0) fast_check_threads_etc(7); pc+=*(INT32*)pc; pop_stack(); break; } /* FIXME: Does this need bignum tests? /Fixed - Hubbe */ LOOP(F_INC_LOOP, 1, <, is_lt); LOOP(F_DEC_LOOP, -1, >, is_gt); LOOP(F_INC_NEQ_LOOP, 1, !=, !is_eq); LOOP(F_DEC_NEQ_LOOP, -1, !=, !is_eq); CASE(F_FOREACH) /* array, lvalue, X, i */ { if(sp[-4].type != PIKE_T_ARRAY) PIKE_ERROR("foreach", "Bad argument 1.\n", sp-3, 1); if(sp[-1].u.integer < sp[-4].u.array->size) { fast_check_threads_etc(10); index_no_free(sp,sp-4,sp-1); sp++; assign_lvalue(sp-4, sp-1); free_svalue(sp-1); sp--; pc+=EXTRACT_INT(pc); sp[-1].u.integer++; }else{ pc+=sizeof(INT32); } break; } CASE(F_APPLY_AND_RETURN); { INT32 args=sp - *--mark_sp; /* fprintf(stderr,"%p >= %p\n",fp->expendible,sp-args); */ if(fp->expendible >= sp-args) { /* fprintf(stderr,"NOT EXPENDIBLE!\n"); */ MEMMOVE(sp-args+1,sp-args,args*sizeof(struct svalue)); sp++; sp[-args-1].type=PIKE_T_INT; } /* We sabotage the stack here */ assign_svalue(sp-args-1,&fp->context.prog->constants[GET_ARG()].sval); return args+1; } CASE(F_CALL_LFUN_AND_RETURN); { INT32 args=sp - *--mark_sp; if(fp->expendible >= sp-args) { MEMMOVE(sp-args+1,sp-args,args*sizeof(struct svalue)); sp++; sp[-args-1].type=PIKE_T_INT; }else{ free_svalue(sp-args-1); } /* More stack sabotage */ sp[-args-1].u.object=fp->current_object; sp[-args-1].subtype=GET_ARG()+fp->context.identifier_level; #ifdef PIKE_DEBUG if(t_flag > 9) fprintf(stderr,"- IDENTIFIER_LEVEL: %d\n",fp->context.identifier_level); #endif sp[-args-1].type=PIKE_T_FUNCTION; add_ref(fp->current_object); return args+1; } CASE(F_RETURN_LOCAL); instr=GET_ARG(); if(fp->expendible <= fp->locals+instr) { pop_n_elems(sp-1 - (fp->locals+instr)); }else{ push_svalue(fp->locals+instr); } print_return_value(); goto do_return; CASE(F_RETURN_IF_TRUE); if(!IS_ZERO(sp-1)) goto do_return; pop_stack(); break; CASE(F_RETURN_1); push_int(1); goto do_return; CASE(F_RETURN_0); push_int(0); goto do_return; CASE(F_RETURN); do_return: #if defined(PIKE_DEBUG) && defined(GC2) if(d_flag>3) do_gc(); if(d_flag>4) do_debug(); check_threads_etc(); #endif /* fall through */ CASE(F_DUMB_RETURN); return -1; CASE(F_NEGATE); if(sp[-1].type == PIKE_T_INT) { #ifdef AUTO_BIGNUM if(INT_TYPE_NEG_OVERFLOW(sp[-1].u.integer)) { convert_stack_top_to_bignum(); o_negate(); } else #endif /* AUTO_BIGNUM */ sp[-1].u.integer =- sp[-1].u.integer; } else if(sp[-1].type == PIKE_T_FLOAT) { sp[-1].u.float_number =- sp[-1].u.float_number; }else{ o_negate(); } break; CASE(F_COMPL); o_compl(); break; CASE(F_NOT); switch(sp[-1].type) { case PIKE_T_INT: sp[-1].u.integer =! sp[-1].u.integer; break; case PIKE_T_FUNCTION: case PIKE_T_OBJECT: if(IS_ZERO(sp-1)) { pop_stack(); push_int(1); }else{ pop_stack(); push_int(0); } break; default: free_svalue(sp-1); sp[-1].type=PIKE_T_INT; sp[-1].u.integer=0; } break; CASE(F_LSH); o_lsh(); break; CASE(F_RSH); o_rsh(); break; COMPARISMENT(F_EQ, is_eq(sp-2,sp-1)); COMPARISMENT(F_NE,!is_eq(sp-2,sp-1)); COMPARISMENT(F_GT, is_gt(sp-2,sp-1)); COMPARISMENT(F_GE,!is_lt(sp-2,sp-1)); COMPARISMENT(F_LT, is_lt(sp-2,sp-1)); COMPARISMENT(F_LE,!is_gt(sp-2,sp-1)); CASE(F_ADD); f_add(2); break; CASE(F_SUBTRACT); o_subtract(); break; CASE(F_AND); o_and(); break; CASE(F_OR); o_or(); break; CASE(F_XOR); o_xor(); break; CASE(F_MULTIPLY); o_multiply(); break; CASE(F_DIVIDE); o_divide(); break; CASE(F_MOD); o_mod(); break; CASE(F_ADD_INT); push_int(GET_ARG()); f_add(2); break; CASE(F_ADD_NEG_INT); push_int(-GET_ARG()); f_add(2); break; CASE(F_PUSH_ARRAY); switch(sp[-1].type) { default: PIKE_ERROR("@", "Bad argument.\n", sp, 1); case PIKE_T_OBJECT: if(!sp[-1].u.object->prog || FIND_LFUN(sp[-1].u.object->prog,LFUN__VALUES) == -1) PIKE_ERROR("@", "Bad argument.\n", sp, 1); apply_lfun(sp[-1].u.object, LFUN__VALUES, 0); if(sp[-1].type != PIKE_T_ARRAY) error("Bad return type from o->_values() in @\n"); free_svalue(sp-2); sp[-2]=sp[-1]; sp--; break; case PIKE_T_ARRAY: break; } sp--; push_array_items(sp->u.array); break; CASE(F_LOCAL_LOCAL_INDEX); { struct svalue *s=fp->locals+GET_ARG(); if(s->type == PIKE_T_STRING) s->subtype=0; sp++->type=PIKE_T_INT; index_no_free(sp-1,fp->locals+GET_ARG2(),s); break; } CASE(F_LOCAL_INDEX); { struct svalue tmp,*s=fp->locals+GET_ARG(); if(s->type == PIKE_T_STRING) s->subtype=0; index_no_free(&tmp,sp-1,s); free_svalue(sp-1); sp[-1]=tmp; break; } CASE(F_GLOBAL_LOCAL_INDEX); { struct svalue tmp,*s; low_object_index_no_free(sp, fp->current_object, GET_ARG() + fp->context.identifier_level); sp++; s=fp->locals+GET_ARG2(); if(s->type == PIKE_T_STRING) s->subtype=0; index_no_free(&tmp,sp-1,s); free_svalue(sp-1); sp[-1]=tmp; break; } CASE(F_LOCAL_ARROW); { struct svalue tmp; tmp.type=PIKE_T_STRING; tmp.u.string=fp->context.prog->strings[GET_ARG()]; tmp.subtype=1; sp->type=PIKE_T_INT; sp++; index_no_free(sp-1,fp->locals+GET_ARG2() , &tmp); print_return_value(); break; } CASE(F_ARROW); { struct svalue tmp,tmp2; tmp.type=PIKE_T_STRING; tmp.u.string=fp->context.prog->strings[GET_ARG()]; tmp.subtype=1; index_no_free(&tmp2, sp-1, &tmp); free_svalue(sp-1); sp[-1]=tmp2; print_return_value(); break; } CASE(F_STRING_INDEX); { struct svalue tmp,tmp2; tmp.type=PIKE_T_STRING; tmp.u.string=fp->context.prog->strings[GET_ARG()]; tmp.subtype=0; index_no_free(&tmp2, sp-1, &tmp); free_svalue(sp-1); sp[-1]=tmp2; print_return_value(); break; } CASE(F_POS_INT_INDEX); push_int(GET_ARG()); print_return_value(); goto do_index; CASE(F_NEG_INT_INDEX); push_int(-GET_ARG()); print_return_value(); CASE(F_INDEX); do_index: { struct svalue s; index_no_free(&s,sp-2,sp-1); pop_n_elems(2); *sp=s; sp++; } print_return_value(); break; CASE(F_MAGIC_INDEX); push_magic_index(magic_index_program, accumulator, GET_ARG()); break; CASE(F_MAGIC_SET_INDEX); push_magic_index(magic_set_index_program, accumulator, GET_ARG()); break; CASE(F_CAST); f_cast(); break; CASE(F_SOFT_CAST); /* Stack: type_string, value */ #ifdef PIKE_DEBUG if (sp[-2].type != T_STRING) { /* FIXME: The type should really be T_TYPE... */ fatal("Argument 1 to soft_cast isn't a string!\n"); } #endif /* PIKE_DEBUG */ if (runtime_options & RUNTIME_CHECK_TYPES) { struct pike_string *sval_type = get_type_of_svalue(sp-1); if (!pike_types_le(sval_type, sp[-2].u.string)) { /* get_type_from_svalue() doesn't return a fully specified type * for array, mapping and multiset, so we perform a more lenient * check for them. */ if (!pike_types_le(sval_type, weak_type_string) || !match_types(sval_type, sp[-2].u.string)) { struct pike_string *t1; struct pike_string *t2; ONERROR tmp1; ONERROR tmp2; t1 = describe_type(sp[-2].u.string); SET_ONERROR(tmp1, do_free_string, t1); t2 = describe_type(sval_type); SET_ONERROR(tmp2, do_free_string, t2); free_string(sval_type); bad_arg_error("soft_cast", sp-1, 1, 1, t1->str, sp-1, "Assertion failed in soft_cast(). " "Expected %s, got %s\n", t1->str, t2->str); /* NOT_REACHED */ UNSET_ONERROR(tmp2); UNSET_ONERROR(tmp1); free_string(t2); free_string(t1); } } free_string(sval_type); #ifdef PIKE_DEBUG if (d_flag > 2) { struct pike_string *t = describe_type(sp[-2].u.string); fprintf(stderr, "Soft cast to %s\n", t->str); free_string(t); } #endif /* PIKE_DEBUG */ } stack_swap(); pop_stack(); break; CASE(F_RANGE); o_range(); break; CASE(F_COPY_VALUE); { struct svalue tmp; copy_svalues_recursively_no_free(&tmp,sp-1,1,0); free_svalue(sp-1); sp[-1]=tmp; } break; CASE(F_INDIRECT); { struct svalue s; lvalue_to_svalue_no_free(&s,sp-2); if(s.type != PIKE_T_STRING) { pop_n_elems(2); *sp=s; sp++; }else{ struct object *o; o=low_clone(string_assignment_program); ((struct string_assignment_storage *)o->storage)->lval[0]=sp[-2]; ((struct string_assignment_storage *)o->storage)->lval[1]=sp[-1]; ((struct string_assignment_storage *)o->storage)->s=s.u.string; sp-=2; push_object(o); } } print_return_value(); break; CASE(F_SIZEOF); instr=pike_sizeof(sp-1); pop_stack(); push_int(instr); break; CASE(F_SIZEOF_LOCAL); push_int(pike_sizeof(fp->locals+GET_ARG())); break; CASE(F_SSCANF); o_sscanf(GET_ARG()); break; CASE(F_CALL_LFUN); apply_low(fp->current_object, GET_ARG()+fp->context.identifier_level, sp - *--mark_sp); break; CASE(F_CALL_LFUN_AND_POP); apply_low(fp->current_object, GET_ARG()+fp->context.identifier_level, sp - *--mark_sp); pop_stack(); break; CASE(F_MARK_APPLY); strict_apply_svalue(fp->context.prog->constants + GET_ARG(), 0); break; CASE(F_MARK_APPLY_POP); strict_apply_svalue(fp->context.prog->constants + GET_ARG(), 0); pop_stack(); break; CASE(F_APPLY); strict_apply_svalue(fp->context.prog->constants + GET_ARG(), sp - *--mark_sp ); break; CASE(F_APPLY_AND_POP); strict_apply_svalue(fp->context.prog->constants + GET_ARG(), sp - *--mark_sp ); pop_stack(); break; CASE(F_CALL_FUNCTION); mega_apply(APPLY_STACK,sp - *--mark_sp,0,0); break; CASE(F_CALL_FUNCTION_AND_RETURN); { INT32 args=sp - *--mark_sp; if(!args) PIKE_ERROR("`()", "Too few arguments.\n", sp, 0); switch(sp[-args].type) { case PIKE_T_INT: if (!sp[-args].u.integer) { PIKE_ERROR("`()", "Attempt to call the NULL-value\n", sp, args); } case PIKE_T_STRING: case PIKE_T_FLOAT: case PIKE_T_MAPPING: case PIKE_T_MULTISET: PIKE_ERROR("`()", "Attempt to call a non-function value.\n", sp, args); } return args; } default: fatal("Strange instruction %ld\n",(long)instr); } } }

pike.git/ src/ interpreter.h > 9b343298523b500423872d890dbddf36dfdd92fc [Annotate]