BytecodeFormatFlags.h (2919B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- 2 * vim: set ts=8 sts=2 et sw=2 tw=80: 3 * This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 #ifndef vm_BytecodeFormatFlags_h 8 #define vm_BytecodeFormatFlags_h 9 10 /* 11 * [SMDOC] Bytecode Format flags (JOF_*) 12 */ 13 enum { 14 JOF_BYTE = 0, /* single bytecode, no immediates */ 15 JOF_UINT8 = 1, /* unspecified uint8_t argument */ 16 JOF_UINT16 = 2, /* unspecified uint16_t argument */ 17 JOF_UINT24 = 3, /* unspecified uint24_t argument */ 18 JOF_UINT32 = 4, /* unspecified uint32_t argument */ 19 JOF_INT8 = 5, /* int8_t literal */ 20 JOF_INT32 = 6, /* int32_t literal */ 21 JOF_JUMP = 7, /* int32_t jump offset */ 22 JOF_TABLESWITCH = 8, /* table switch */ 23 JOF_ENVCOORD = 9, /* embedded ScopeCoordinate immediate */ 24 JOF_ARGC = 10, /* uint16_t argument count */ 25 JOF_QARG = 11, /* function argument index */ 26 JOF_LOCAL = 12, /* var or block-local variable */ 27 JOF_RESUMEINDEX = 13, /* yield or await resume index */ 28 JOF_DOUBLE = 14, /* inline DoubleValue */ 29 JOF_GCTHING = 15, /* uint32_t generic gc-thing index */ 30 JOF_ATOM = 16, /* uint32_t constant index */ 31 JOF_OBJECT = 17, /* uint32_t object index */ 32 JOF_REGEXP = 18, /* uint32_t regexp index */ 33 JOF_SCOPE = 19, /* uint32_t scope index */ 34 JOF_BIGINT = 20, /* uint32_t index for BigInt value */ 35 JOF_ICINDEX = 21, /* uint32_t IC index */ 36 JOF_LOOPHEAD = 22, /* JSOp::LoopHead, combines JOF_ICINDEX and JOF_UINT8 */ 37 JOF_TWO_UINT8 = 23, /* A pair of unspecified uint8_t arguments */ 38 JOF_DEBUGCOORD = 24, /* An embedded ScopeCoordinate immediate that may 39 traverse DebugEnvironmentProxies*/ 40 JOF_SHAPE = 25, /* uint32_t shape index */ 41 JOF_STRING = 26, /* uint32_t constant index */ 42 JOF_TYPEMASK = 0xFF, /* mask for above immediate types */ 43 44 /* Bits 0xFF00 are available for future usage */ 45 46 JOF_PROPSET = 1 << 16, /* property/element/name set operation */ 47 JOF_PROPINIT = 1 << 17, /* property/element/name init operation */ 48 JOF_CHECKSLOPPY = 1 << 18, /* op can only be generated in sloppy mode */ 49 JOF_CHECKSTRICT = 1 << 19, /* op can only be generated in strict mode */ 50 JOF_INVOKE = 1 << 20, /* any call, construct, or eval instruction */ 51 JOF_CONSTRUCT = 1 << 21, /* invoke instruction using [[Construct]] entry */ 52 JOF_SPREAD = 1 << 22, /* invoke instruction using spread argument */ 53 JOF_GNAME = 1 << 23, /* predicted global name */ 54 JOF_IC = 1 << 24, /* baseline may use an IC for this op */ 55 JOF_USES_ENV = 1 << 25, /* op uses the frame's environment chain */ 56 }; 57 58 #endif /* vm_BytecodeFormatFlags_h */