/* * This file is part of DGD, http://dgd-osr.sourceforge.net/ * Copyright (C) 1993-2010 Dworkin B.V. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ # define I_INSTR_MASK 0x1f /* instruction mask */ # define I_PUSH_ZERO 0 # define I_PUSH_ONE 1 # define I_PUSH_INT1 2 /* 1 signed */ # define I_PUSH_INT4 3 /* 4 signed */ # define I_PUSH_FLOAT 4 /* 6 unsigned */ # define I_PUSH_STRING 5 /* 1 unsigned */ # define I_PUSH_NEAR_STRING 6 /* 1 unsigned, 1 unsigned */ # define I_PUSH_FAR_STRING 7 /* 1 unsigned, 2 unsigned */ # define I_PUSH_LOCAL 8 /* 1 signed */ # define I_PUSH_GLOBAL 9 /* 1 unsigned */ # define I_PUSH_FAR_GLOBAL 10 /* 1 unsigned, 1 unsigned */ # define I_PUSH_LOCAL_LVAL 11 /* 1 signed */ # define I_PUSH_GLOBAL_LVAL 12 /* 1 unsigned */ # define I_PUSH_FAR_GLOBAL_LVAL 13 /* 1 unsigned, 1 unsigned */ # define I_INDEX 14 # define I_INDEX_LVAL 15 # define I_AGGREGATE 16 /* 1 unsigned, 2 unsigned */ # define I_SPREAD 17 /* 1 signed */ # define I_CAST 18 /* 1 unsigned */ # define I_DUP 19 # define I_STORE 20 # define I_JUMP 21 /* 2 unsigned */ # define I_JUMP_ZERO 22 /* 2 unsigned */ # define I_JUMP_NONZERO 23 /* 2 unsigned */ # define I_SWITCH 24 /* n */ # define I_CALL_KFUNC 25 /* 1 unsigned (+ 1 unsigned) */ # define I_CALL_AFUNC 26 /* 1 unsigned, 1 unsigned */ # define I_CALL_DFUNC 27 /* 1 unsigned, 1 unsigned, 1 unsigned */ # define I_CALL_FUNC 28 /* 2 unsigned, 1 unsigned */ # define I_CATCH 29 /* 2 unsigned */ # define I_RLIMITS 30 # define I_RETURN 31 # define I_LINE_MASK 0xc0 /* line add bits */ # define I_POP_BIT 0x20 /* pop 1 after instruction */ # define I_TYPE_BIT I_POP_BIT /* lvalue typechecks assignment */ # define I_LINE_SHIFT 6 # define FETCH1S(pc) SCHAR(*(pc)++) # define FETCH1U(pc) UCHAR(*(pc)++) # define FETCH2S(pc, v) ((short) (v = *(pc)++ << 8, v |= UCHAR(*(pc)++))) # define FETCH2U(pc, v) ((unsigned short) (v = *(pc)++ << 8, \ v |= UCHAR(*(pc)++))) # define FETCH3S(pc, v) ((Int) (v = *(pc)++ << 8, \ v |= UCHAR(*(pc)++), v <<= 8, \ v |= UCHAR(*(pc)++))) # define FETCH3U(pc, v) ((Uint) (v = UCHAR(*(pc)++) << 8, \ v |= UCHAR(*(pc)++), v <<= 8, \ v |= UCHAR(*(pc)++))) # define FETCH4S(pc, v) ((Int) (v = *(pc)++ << 8, \ v |= UCHAR(*(pc)++), v <<= 8, \ v |= UCHAR(*(pc)++), v <<= 8, \ v |= UCHAR(*(pc)++))) # define FETCH4U(pc, v) ((Uint) (v = *(pc)++ << 8, \ v |= UCHAR(*(pc)++), v <<= 8, \ v |= UCHAR(*(pc)++), v <<= 8, \ v |= UCHAR(*(pc)++))) # define T_TYPE 0x0f /* type mask */ # define T_NIL 0x00 # define T_INT 0x01 # define T_FLOAT 0x02 # define T_STRING 0x03 # define T_OBJECT 0x04 # define T_ARRAY 0x05 /* value type only */ # define T_MAPPING 0x06 # define T_LWOBJECT 0x07 /* runtime only */ # define T_CLASS 0x07 /* typechecking only */ # define T_MIXED 0x08 /* declaration type only */ # define T_VOID 0x09 /* function return type only */ # define T_LVALUE 0x0a /* address of a value */ # define T_SLVALUE 0x0b /* indexed string lvalue */ # define T_ALVALUE 0x0c /* indexed array lvalue */ # define T_MLVALUE 0x0d /* indexed mapping lvalue */ # define T_SALVALUE 0x0e /* indexed string indexed array lvalue */ # define T_SMLVALUE 0x0f /* indexed string indexed mapping lvalue */ # define T_VARARGS 0x10 /* or'ed with declaration type */ # define T_ELLIPSIS 0x10 /* or'ed with declaration type */ # define T_REF 0xf0 /* reference count mask */ # define REFSHIFT 4 # define T_ARITHMETIC(t) ((t) <= T_FLOAT) # define T_ARITHSTR(t) ((t) <= T_STRING) # define T_POINTER(t) ((t) >= T_STRING) # define T_INDEXED(t) ((t) >= T_ARRAY) /* T_ARRAY, T_MAPPING, T_LWOBJECT */ # define TYPENAMES { "nil", "int", "float", "string", "object", \ "array", "mapping", "lwobject", "mixed", "void" } # define VAL_NIL(v) ((v)->type == nil_type && (v)->u.number == 0) # define VAL_TRUE(v) ((v)->u.number != 0 || (v)->type > T_FLOAT || \ ((v)->type == T_FLOAT && (v)->oindex != 0)) # define PUSH_INTVAL(f, i) ((--(f)->sp)->u.number = (i), \ (f)->sp->type = T_INT) # define PUT_INTVAL(v, i) ((v)->u.number = (i), (v)->type = T_INT) # define PUT_INT(v, i) ((v)->u.number = (i)) # define PUSH_FLTVAL(f, fl) ((--(f)->sp)->oindex = (fl).high, \ (f)->sp->u.objcnt = (fl).low, \ (f)->sp->type = T_FLOAT) # define PUSH_FLTCONST(f, h, l) ((--(f)->sp)->oindex = (h), \ (f)->sp->u.objcnt = (l), \ (f)->sp->type = T_FLOAT) # define PUT_FLTVAL(v, fl) ((v)->oindex = (fl).high, \ (v)->u.objcnt = (fl).low, \ (v)->type = T_FLOAT) # define PUT_FLT(v, fl) ((v)->oindex = (fl).high, \ (v)->u.objcnt = (fl).low) # define GET_FLT(v, fl) ((fl).high = (v)->oindex, \ (fl).low = (v)->u.objcnt) # define PUSH_STRVAL(f, s) (str_ref((--(f)->sp)->u.string = (s)), \ (f)->sp->type = T_STRING) # define PUT_STRVAL(v, s) (str_ref((v)->u.string = (s)), \ (v)->type = T_STRING) # define PUT_STRVAL_NOREF(v, s) ((v)->u.string = (s), (v)->type = T_STRING) # define PUT_STR(v, s) (str_ref((v)->u.string = (s))) # define PUSH_OBJVAL(f, o) ((--(f)->sp)->oindex = (o)->index, \ (f)->sp->u.objcnt = (o)->count, \ (f)->sp->type = T_OBJECT) # define PUT_OBJVAL(v, o) ((v)->oindex = (o)->index, \ (v)->u.objcnt = (o)->count, \ (v)->type = T_OBJECT) # define PUT_OBJ(v, o) ((v)->oindex = (o)->index, \ (v)->u.objcnt = (o)->count) # define PUSH_ARRVAL(f, a) (arr_ref((--(f)->sp)->u.array = (a)), \ (f)->sp->type = T_ARRAY) # define PUT_ARRVAL(v, a) (arr_ref((v)->u.array = (a)), \ (v)->type = T_ARRAY) # define PUT_ARRVAL_NOREF(v, a) ((v)->u.array = (a), (v)->type = T_ARRAY) # define PUT_ARR(v, a) (arr_ref((v)->u.array = (a))) # define PUSH_MAPVAL(f, m) (arr_ref((--(f)->sp)->u.array = (m)), \ (f)->sp->type = T_MAPPING) # define PUT_MAPVAL(v, m) (arr_ref((v)->u.array = (m)), \ (v)->type = T_MAPPING) # define PUT_MAPVAL_NOREF(v, m) ((v)->u.array = (m), (v)->type = T_MAPPING) # define PUT_MAP(v, m) (arr_ref((v)->u.array = (m))) # define PUSH_LWOVAL(f, o) (arr_ref((--(f)->sp)->u.array = (o)), \ (f)->sp->type = T_LWOBJECT) # define PUT_LWOVAL(v, o) (arr_ref((v)->u.array = (o)), \ (v)->type = T_LWOBJECT) # define PUT_LWOVAL_NOREF(v, o) ((v)->u.array = (o), (v)->type = T_LWOBJECT) # define PUT_LWO(v, o) (arr_ref((v)->u.array = (o))) # define VFLT_ISZERO(v) FLT_ISZERO((v)->oindex, (v)->u.objcnt) # define VFLT_ISONE(v) FLT_ISONE((v)->oindex, (v)->u.objcnt) # define VFLT_HASH(v) ((v)->oindex ^ (v)->u.objcnt) # define DESTRUCTED(v) (OBJR((v)->oindex)->count != (v)->u.objcnt) # define C_PRIVATE 0x01 # define C_STATIC 0x02 # define C_NOMASK 0x04 # define C_ELLIPSIS 0x08 # define C_VARARGS 0x08 # define C_ATOMIC 0x10 # define C_TYPECHECKED 0x20 # define C_COMPILED 0x40 # define C_UNDEFINED 0x80 # define SWITCH_INT 0 # define SWITCH_RANGE 1 # define SWITCH_STRING 2 typedef struct _rlinfo_ { Int maxdepth; /* max stack depth */ Int ticks; /* ticks left */ bool nodepth; /* no stack depth checking */ bool noticks; /* no ticks checking */ struct _rlinfo_ *next; /* next in linked list */ } rlinfo; struct _frame_ { frame *prev; /* previous stack frame */ uindex oindex; /* current object index */ array *lwobj; /* lightweight object */ control *ctrl; /* object control block */ dataspace *data; /* dataspace of current object */ control *p_ctrl; /* program control block */ unsigned short p_index; /* program index */ unsigned short nargs; /* # arguments */ bool external; /* TRUE if it's an external call */ bool sos; /* stack on stack */ uindex foffset; /* program function offset */ struct _dfuncdef_ *func; /* current function */ char *prog; /* start of program */ char *pc; /* program counter */ value *stack; /* local value stack */ value *sp; /* stack pointer */ value *lip; /* lvalue index pointer */ value *argp; /* argument pointer (previous sp) */ value *fp; /* frame pointer (at end of local stack) */ Int depth; /* stack depth */ rlinfo *rlim; /* rlimits info */ Int level; /* plane level */ bool atomic; /* within uncaught atomic code */ }; extern void i_init P((char*, int)); extern void i_ref_value P((value*)); extern void i_del_value P((value*)); extern void i_copy P((value*, value*, unsigned int)); extern void i_grow_stack P((frame*, int)); extern void i_push_value P((frame*, value*)); extern void i_pop P((frame*, int)); extern void i_reverse P((frame*, int)); extern void i_odest P((frame*, object*)); extern void i_string P((frame*, int, unsigned int)); extern void i_aggregate P((frame*, unsigned int)); extern void i_map_aggregate P((frame*, unsigned int)); extern int i_spread P((frame*, int, int, Uint)); extern void i_global P((frame*, int, int)); extern void i_global_lvalue P((frame*, int, int, int, Uint)); extern void i_index P((frame*)); extern void i_index_lvalue P((frame*, int, Uint)); extern char *i_typename P((char*, unsigned int)); extern int i_instanceof P((frame*, unsigned int, Uint)); extern void i_cast P((frame*, value*, unsigned int, Uint)); extern void i_dup P((frame*)); extern void i_store P((frame*)); extern Int i_get_depth P((frame*)); extern Int i_get_ticks P((frame*)); extern void i_new_rlimits P((frame*, Int, Int)); extern void i_set_rlimits P((frame*, rlinfo*)); extern frame *i_set_sp P((frame*, value*)); extern frame *i_prev_object P((frame*, int)); extern char *i_prev_program P((frame*, int)); extern void i_typecheck P((frame*, frame*, char*, char*, char*, int, int)); extern void i_catcherr P((frame*, Int)); extern void i_funcall P((frame*, object*, array*, int, int, int)); extern bool i_call P((frame*, object*, array*, char*, unsigned int, int, int)); extern bool i_call_tracei P((frame*, Int, value*)); extern array *i_call_trace P((frame*)); extern bool i_call_critical P((frame*, char*, int, int)); extern void i_runtime_error P((frame*, Int)); extern void i_atomic_error P((frame*, Int)); extern frame *i_restore P((frame*, Int)); extern void i_clear P((void)); extern frame *cframe; extern int nil_type; extern value zero_int, zero_float, nil_value; # define i_add_ticks(f, t) ((f)->rlim->ticks -= (t))