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Diffstat (limited to 'src/dom/js/jsopcode.h')
| -rw-r--r-- | src/dom/js/jsopcode.h | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/src/dom/js/jsopcode.h b/src/dom/js/jsopcode.h deleted file mode 100644 index e24fb2bf8..000000000 --- a/src/dom/js/jsopcode.h +++ /dev/null @@ -1,273 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- - * - * ***** BEGIN LICENSE BLOCK ***** - * Version: MPL 1.1/GPL 2.0/LGPL 2.1 - * - * The contents of this file are subject to the Mozilla Public License Version - * 1.1 (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * http://www.mozilla.org/MPL/ - * - * Software distributed under the License is distributed on an "AS IS" basis, - * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License - * for the specific language governing rights and limitations under the - * License. - * - * The Original Code is Mozilla Communicator client code, released - * March 31, 1998. - * - * The Initial Developer of the Original Code is - * Netscape Communications Corporation. - * Portions created by the Initial Developer are Copyright (C) 1998 - * the Initial Developer. All Rights Reserved. - * - * Contributor(s): - * - * Alternatively, the contents of this file may be used under the terms of - * either of the GNU General Public License Version 2 or later (the "GPL"), - * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), - * in which case the provisions of the GPL or the LGPL are applicable instead - * of those above. If you wish to allow use of your version of this file only - * under the terms of either the GPL or the LGPL, and not to allow others to - * use your version of this file under the terms of the MPL, indicate your - * decision by deleting the provisions above and replace them with the notice - * and other provisions required by the GPL or the LGPL. If you do not delete - * the provisions above, a recipient may use your version of this file under - * the terms of any one of the MPL, the GPL or the LGPL. - * - * ***** END LICENSE BLOCK ***** */ - -#ifndef jsopcode_h___ -#define jsopcode_h___ -/* - * JS bytecode definitions. - */ -#include <stddef.h> -#include "jsprvtd.h" -#include "jspubtd.h" - -JS_BEGIN_EXTERN_C - -/* - * JS operation bytecodes. - */ -typedef enum JSOp { -#define OPDEF(op,val,name,token,length,nuses,ndefs,prec,format) \ - op = val, -#include "jsopcode.tbl" -#undef OPDEF - JSOP_LIMIT -} JSOp; - -/* - * JS bytecode formats. - */ -#define JOF_BYTE 0 /* single bytecode, no immediates */ -#define JOF_JUMP 1 /* signed 16-bit jump offset immediate */ -#define JOF_CONST 2 /* unsigned 16-bit constant pool index */ -#define JOF_UINT16 3 /* unsigned 16-bit immediate operand */ -#define JOF_TABLESWITCH 4 /* table switch */ -#define JOF_LOOKUPSWITCH 5 /* lookup switch */ -#define JOF_QARG 6 /* quickened get/set function argument ops */ -#define JOF_QVAR 7 /* quickened get/set local variable ops */ -#define JOF_DEFLOCALVAR 8 /* define local var with initial value */ -#define JOF_JUMPX 9 /* signed 32-bit jump offset immediate */ -#define JOF_TABLESWITCHX 10 /* extended (32-bit offset) table switch */ -#define JOF_LOOKUPSWITCHX 11 /* extended (32-bit offset) lookup switch */ -#define JOF_TYPEMASK 0x000f /* mask for above immediate types */ -#define JOF_NAME 0x0010 /* name operation */ -#define JOF_PROP 0x0020 /* obj.prop operation */ -#define JOF_ELEM 0x0030 /* obj[index] operation */ -#define JOF_MODEMASK 0x0030 /* mask for above addressing modes */ -#define JOF_SET 0x0040 /* set (i.e., assignment) operation */ -#define JOF_DEL 0x0080 /* delete operation */ -#define JOF_DEC 0x0100 /* decrement (--, not ++) opcode */ -#define JOF_INC 0x0200 /* increment (++, not --) opcode */ -#define JOF_INCDEC 0x0300 /* increment or decrement opcode */ -#define JOF_POST 0x0400 /* postorder increment or decrement */ -#define JOF_IMPORT 0x0800 /* import property op */ -#define JOF_FOR 0x1000 /* for-in property op */ -#define JOF_ASSIGNING JOF_SET /* hint for JSClass.resolve, used for ops - that do simplex assignment */ -#define JOF_BACKPATCH 0x4000 /* backpatch placeholder during codegen */ -#define JOF_LEFTASSOC 0x8000 /* left-associative operator */ - -#define JOF_TYPE_IS_EXTENDED_JUMP(t) \ - ((unsigned)((t) - JOF_JUMPX) <= (unsigned)(JOF_LOOKUPSWITCHX - JOF_JUMPX)) - -/* - * Immediate operand getters, setters, and bounds. - */ - -/* Short (2-byte signed offset) relative jump macros. */ -#define JUMP_OFFSET_LEN 2 -#define JUMP_OFFSET_HI(off) ((jsbytecode)((off) >> 8)) -#define JUMP_OFFSET_LO(off) ((jsbytecode)(off)) -#define GET_JUMP_OFFSET(pc) ((int16)(((pc)[1] << 8) | (pc)[2])) -#define SET_JUMP_OFFSET(pc,off) ((pc)[1] = JUMP_OFFSET_HI(off), \ - (pc)[2] = JUMP_OFFSET_LO(off)) -#define JUMP_OFFSET_MIN ((int16)0x8000) -#define JUMP_OFFSET_MAX ((int16)0x7fff) - -/* - * When a short jump won't hold a relative offset, its 2-byte immediate offset - * operand is an unsigned index of a span-dependency record, maintained until - * code generation finishes -- after which some (but we hope not nearly all) - * span-dependent jumps must be extended (see OptimizeSpanDeps in jsemit.c). - * - * If the span-dependency record index overflows SPANDEP_INDEX_MAX, the jump - * offset will contain SPANDEP_INDEX_HUGE, indicating that the record must be - * found (via binary search) by its "before span-dependency optimization" pc - * offset (from script main entry point). - */ -#define GET_SPANDEP_INDEX(pc) ((uint16)(((pc)[1] << 8) | (pc)[2])) -#define SET_SPANDEP_INDEX(pc,i) ((pc)[1] = JUMP_OFFSET_HI(i), \ - (pc)[2] = JUMP_OFFSET_LO(i)) -#define SPANDEP_INDEX_MAX ((uint16)0xfffe) -#define SPANDEP_INDEX_HUGE ((uint16)0xffff) - -/* Ultimately, if short jumps won't do, emit long (4-byte signed) offsets. */ -#define JUMPX_OFFSET_LEN 4 -#define JUMPX_OFFSET_B3(off) ((jsbytecode)((off) >> 24)) -#define JUMPX_OFFSET_B2(off) ((jsbytecode)((off) >> 16)) -#define JUMPX_OFFSET_B1(off) ((jsbytecode)((off) >> 8)) -#define JUMPX_OFFSET_B0(off) ((jsbytecode)(off)) -#define GET_JUMPX_OFFSET(pc) ((int32)(((pc)[1] << 24) | ((pc)[2] << 16) \ - | ((pc)[3] << 8) | (pc)[4])) -#define SET_JUMPX_OFFSET(pc,off)((pc)[1] = JUMPX_OFFSET_B3(off), \ - (pc)[2] = JUMPX_OFFSET_B2(off), \ - (pc)[3] = JUMPX_OFFSET_B1(off), \ - (pc)[4] = JUMPX_OFFSET_B0(off)) -#define JUMPX_OFFSET_MIN ((int32)0x80000000) -#define JUMPX_OFFSET_MAX ((int32)0x7fffffff) - -/* A literal is indexed by a per-script atom map. */ -#define ATOM_INDEX_LEN 2 -#define ATOM_INDEX_HI(index) ((jsbytecode)((index) >> 8)) -#define ATOM_INDEX_LO(index) ((jsbytecode)(index)) -#define GET_ATOM_INDEX(pc) ((jsatomid)(((pc)[1] << 8) | (pc)[2])) -#define SET_ATOM_INDEX(pc,index)((pc)[1] = ATOM_INDEX_HI(index), \ - (pc)[2] = ATOM_INDEX_LO(index)) -#define GET_ATOM(cx,script,pc) js_GetAtom((cx), &(script)->atomMap, \ - GET_ATOM_INDEX(pc)) -#define ATOM_INDEX_LIMIT_LOG2 16 -#define ATOM_INDEX_LIMIT ((uint32)1 << ATOM_INDEX_LIMIT_LOG2) - -/* Actual argument count operand format helpers. */ -#define ARGC_HI(argc) ((jsbytecode)((argc) >> 8)) -#define ARGC_LO(argc) ((jsbytecode)(argc)) -#define GET_ARGC(pc) ((uintN)(((pc)[1] << 8) | (pc)[2])) -#define ARGC_LIMIT ((uint32)1 << 16) - -/* Synonyms for quick JOF_QARG and JOF_QVAR bytecodes. */ -#define GET_ARGNO(pc) GET_ARGC(pc) -#define SET_ARGNO(pc,argno) SET_JUMP_OFFSET(pc,argno) -#define ARGNO_LEN JUMP_OFFSET_LEN -#define GET_VARNO(pc) GET_ARGC(pc) -#define SET_VARNO(pc,varno) SET_JUMP_OFFSET(pc,varno) -#define VARNO_LEN JUMP_OFFSET_LEN - -struct JSCodeSpec { - const char *name; /* JS bytecode name */ - const char *token; /* JS source literal or null */ - int8 length; /* length including opcode byte */ - int8 nuses; /* arity, -1 if variadic */ - int8 ndefs; /* number of stack results */ - uint8 prec; /* operator precedence */ - uint32 format; /* immediate operand format */ -}; - -extern const char js_const_str[]; -extern const char js_var_str[]; -extern const char js_function_str[]; -extern const char js_in_str[]; -extern const char js_instanceof_str[]; -extern const char js_new_str[]; -extern const char js_delete_str[]; -extern const char js_typeof_str[]; -extern const char js_void_str[]; -extern const char js_null_str[]; -extern const char js_this_str[]; -extern const char js_false_str[]; -extern const char js_true_str[]; -extern const JSCodeSpec js_CodeSpec[]; -extern uintN js_NumCodeSpecs; -extern const jschar js_EscapeMap[]; - -/* - * Return a GC'ed string containing the chars in str, with any non-printing - * chars or quotes (' or " as specified by the quote argument) escaped, and - * with the quote character at the beginning and end of the result string. - */ -extern JSString * -js_QuoteString(JSContext *cx, JSString *str, jschar quote); - -/* - * JSPrinter operations, for printf style message formatting. The return - * value from js_GetPrinterOutput() is the printer's cumulative output, in - * a GC'ed string. - */ -extern JSPrinter * -js_NewPrinter(JSContext *cx, const char *name, uintN indent, JSBool pretty); - -extern void -js_DestroyPrinter(JSPrinter *jp); - -extern JSString * -js_GetPrinterOutput(JSPrinter *jp); - -extern int -js_printf(JSPrinter *jp, const char *format, ...); - -extern JSBool -js_puts(JSPrinter *jp, const char *s); - -#ifdef DEBUG -/* - * Disassemblers, for debugging only. - */ -#include <stdio.h> - -extern JS_FRIEND_API(void) -js_Disassemble(JSContext *cx, JSScript *script, JSBool lines, FILE *fp); - -extern JS_FRIEND_API(uintN) -js_Disassemble1(JSContext *cx, JSScript *script, jsbytecode *pc, uintN loc, - JSBool lines, FILE *fp); -#endif /* DEBUG */ - -/* - * Decompilers, for script, function, and expression pretty-printing. - */ -extern JSBool -js_DecompileCode(JSPrinter *jp, JSScript *script, jsbytecode *pc, uintN len); - -extern JSBool -js_DecompileScript(JSPrinter *jp, JSScript *script); - -extern JSBool -js_DecompileFunctionBody(JSPrinter *jp, JSFunction *fun); - -extern JSBool -js_DecompileFunction(JSPrinter *jp, JSFunction *fun); - -/* - * Find the source expression that resulted in v, and return a new string - * containing it. Fall back on v's string conversion (fallback) if we can't - * find the bytecode that generated and pushed v on the operand stack. - * - * Search the current stack frame if spindex is JSDVG_SEARCH_STACK. Don't - * look for v on the stack if spindex is JSDVG_IGNORE_STACK. Otherwise, - * spindex is the negative index of v, measured from cx->fp->sp, or from a - * lower frame's sp if cx->fp is native. - */ -extern JSString * -js_DecompileValueGenerator(JSContext *cx, intN spindex, jsval v, - JSString *fallback); - -#define JSDVG_IGNORE_STACK 0 -#define JSDVG_SEARCH_STACK 1 - -JS_END_EXTERN_C - -#endif /* jsopcode_h___ */ |
