christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1 | // Copyright (c) 1994-2006 Sun Microsystems Inc. |
| 2 | // All Rights Reserved. |
| 3 | // |
| 4 | // Redistribution and use in source and binary forms, with or without |
| 5 | // modification, are permitted provided that the following conditions are |
| 6 | // met: |
| 7 | // |
| 8 | // - Redistributions of source code must retain the above copyright notice, |
| 9 | // this list of conditions and the following disclaimer. |
| 10 | // |
| 11 | // - Redistribution in binary form must reproduce the above copyright |
| 12 | // notice, this list of conditions and the following disclaimer in the |
| 13 | // documentation and/or other materials provided with the distribution. |
| 14 | // |
| 15 | // - Neither the name of Sun Microsystems or the names of contributors may |
| 16 | // be used to endorse or promote products derived from this software without |
| 17 | // specific prior written permission. |
| 18 | // |
| 19 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 20 | // IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 21 | // THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 23 | // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 24 | // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 25 | // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 26 | // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 27 | // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 28 | // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 29 | // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | |
| 31 | // The original source code covered by the above license above has been |
| 32 | // modified significantly by Google Inc. |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 33 | // Copyright 2012 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 34 | |
| 35 | #ifndef V8_ASSEMBLER_H_ |
| 36 | #define V8_ASSEMBLER_H_ |
| 37 | |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 38 | #include "v8.h" |
| 39 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 40 | #include "allocation.h" |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 41 | #include "builtins.h" |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 42 | #include "gdb-jit.h" |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 43 | #include "isolate.h" |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 44 | #include "runtime.h" |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 45 | #include "token.h" |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 46 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 47 | namespace v8 { |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 48 | |
| 49 | class ApiFunction; |
| 50 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 51 | namespace internal { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 52 | |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 53 | struct StatsCounter; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 54 | const unsigned kNoASTId = -1; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 55 | // ----------------------------------------------------------------------------- |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 56 | // Platform independent assembler base class. |
| 57 | |
| 58 | class AssemblerBase: public Malloced { |
| 59 | public: |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 60 | explicit AssemblerBase(Isolate* isolate); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 61 | |
| 62 | Isolate* isolate() const { return isolate_; } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 63 | int jit_cookie() { return jit_cookie_; } |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 64 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 65 | // Overwrite a host NaN with a quiet target NaN. Used by mksnapshot for |
| 66 | // cross-snapshotting. |
| 67 | static void QuietNaN(HeapObject* nan) { } |
| 68 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 69 | private: |
| 70 | Isolate* isolate_; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 71 | int jit_cookie_; |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 72 | }; |
| 73 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 74 | |
| 75 | // ----------------------------------------------------------------------------- |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 76 | // Labels represent pc locations; they are typically jump or call targets. |
| 77 | // After declaration, a label can be freely used to denote known or (yet) |
| 78 | // unknown pc location. Assembler::bind() is used to bind a label to the |
| 79 | // current pc. A label can be bound only once. |
| 80 | |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 81 | class Label BASE_EMBEDDED { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 82 | public: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 83 | enum Distance { |
| 84 | kNear, kFar |
| 85 | }; |
| 86 | |
| 87 | INLINE(Label()) { |
| 88 | Unuse(); |
| 89 | UnuseNear(); |
| 90 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 91 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 92 | INLINE(~Label()) { |
| 93 | ASSERT(!is_linked()); |
| 94 | ASSERT(!is_near_linked()); |
| 95 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 96 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 97 | INLINE(void Unuse()) { pos_ = 0; } |
| 98 | INLINE(void UnuseNear()) { near_link_pos_ = 0; } |
| 99 | |
| 100 | INLINE(bool is_bound() const) { return pos_ < 0; } |
| 101 | INLINE(bool is_unused() const) { return pos_ == 0 && near_link_pos_ == 0; } |
| 102 | INLINE(bool is_linked() const) { return pos_ > 0; } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 103 | INLINE(bool is_near_linked() const) { return near_link_pos_ > 0; } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 104 | |
| 105 | // Returns the position of bound or linked labels. Cannot be used |
| 106 | // for unused labels. |
| 107 | int pos() const; |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 108 | int near_link_pos() const { return near_link_pos_ - 1; } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 109 | |
| 110 | private: |
| 111 | // pos_ encodes both the binding state (via its sign) |
| 112 | // and the binding position (via its value) of a label. |
| 113 | // |
| 114 | // pos_ < 0 bound label, pos() returns the jump target position |
| 115 | // pos_ == 0 unused label |
| 116 | // pos_ > 0 linked label, pos() returns the last reference position |
| 117 | int pos_; |
| 118 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 119 | // Behaves like |pos_| in the "> 0" case, but for near jumps to this label. |
| 120 | int near_link_pos_; |
| 121 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 122 | void bind_to(int pos) { |
| 123 | pos_ = -pos - 1; |
| 124 | ASSERT(is_bound()); |
| 125 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 126 | void link_to(int pos, Distance distance = kFar) { |
| 127 | if (distance == kNear) { |
| 128 | near_link_pos_ = pos + 1; |
| 129 | ASSERT(is_near_linked()); |
| 130 | } else { |
| 131 | pos_ = pos + 1; |
| 132 | ASSERT(is_linked()); |
| 133 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 134 | } |
| 135 | |
| 136 | friend class Assembler; |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 137 | friend class RegexpAssembler; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 138 | friend class Displacement; |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 139 | friend class RegExpMacroAssemblerIrregexp; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 140 | }; |
| 141 | |
| 142 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 143 | enum SaveFPRegsMode { kDontSaveFPRegs, kSaveFPRegs }; |
| 144 | |
| 145 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 146 | // ----------------------------------------------------------------------------- |
| 147 | // Relocation information |
| 148 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 149 | |
| 150 | // Relocation information consists of the address (pc) of the datum |
| 151 | // to which the relocation information applies, the relocation mode |
| 152 | // (rmode), and an optional data field. The relocation mode may be |
| 153 | // "descriptive" and not indicate a need for relocation, but simply |
| 154 | // describe a property of the datum. Such rmodes are useful for GC |
| 155 | // and nice disassembly output. |
| 156 | |
| 157 | class RelocInfo BASE_EMBEDDED { |
| 158 | public: |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 159 | // The constant kNoPosition is used with the collecting of source positions |
| 160 | // in the relocation information. Two types of source positions are collected |
| 161 | // "position" (RelocMode position) and "statement position" (RelocMode |
| 162 | // statement_position). The "position" is collected at places in the source |
| 163 | // code which are of interest when making stack traces to pin-point the source |
| 164 | // location of a stack frame as close as possible. The "statement position" is |
| 165 | // collected at the beginning at each statement, and is used to indicate |
| 166 | // possible break locations. kNoPosition is used to indicate an |
| 167 | // invalid/uninitialized position value. |
| 168 | static const int kNoPosition = -1; |
| 169 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 170 | // This string is used to add padding comments to the reloc info in cases |
| 171 | // where we are not sure to have enough space for patching in during |
| 172 | // lazy deoptimization. This is the case if we have indirect calls for which |
| 173 | // we do not normally record relocation info. |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 174 | static const char* const kFillerCommentString; |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 175 | |
ricow@chromium.org | 2233451 | 2011-02-25 07:28:50 +0000 | [diff] [blame] | 176 | // The minimum size of a comment is equal to three bytes for the extra tagged |
| 177 | // pc + the tag for the data, and kPointerSize for the actual pointer to the |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 178 | // comment. |
ricow@chromium.org | 2233451 | 2011-02-25 07:28:50 +0000 | [diff] [blame] | 179 | static const int kMinRelocCommentSize = 3 + kPointerSize; |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 180 | |
| 181 | // The maximum size for a call instruction including pc-jump. |
| 182 | static const int kMaxCallSize = 6; |
| 183 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 184 | // The maximum pc delta that will use the short encoding. |
| 185 | static const int kMaxSmallPCDelta; |
| 186 | |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 187 | enum Mode { |
| 188 | // Please note the order is important (see IsCodeTarget, IsGCRelocMode). |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 189 | CODE_TARGET, // Code target which is not any of the above. |
| 190 | CODE_TARGET_WITH_ID, |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 191 | CONSTRUCT_CALL, // code target that is a call to a JavaScript constructor. |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 192 | CODE_TARGET_CONTEXT, // Code target used for contextual loads and stores. |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 193 | DEBUG_BREAK, // Code target for the debugger statement. |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 194 | EMBEDDED_OBJECT, |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 195 | GLOBAL_PROPERTY_CELL, |
| 196 | |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 197 | // Everything after runtime_entry (inclusive) is not GC'ed. |
| 198 | RUNTIME_ENTRY, |
| 199 | JS_RETURN, // Marks start of the ExitJSFrame code. |
| 200 | COMMENT, |
| 201 | POSITION, // See comment for kNoPosition above. |
| 202 | STATEMENT_POSITION, // See comment for kNoPosition above. |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 203 | DEBUG_BREAK_SLOT, // Additional code inserted for debug break slot. |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 204 | EXTERNAL_REFERENCE, // The address of an external C++ function. |
| 205 | INTERNAL_REFERENCE, // An address inside the same function. |
| 206 | |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 207 | // Marks a constant pool. Only used on ARM. |
| 208 | // It uses a custom noncompact encoding. |
| 209 | CONST_POOL, |
| 210 | |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 211 | // add more as needed |
| 212 | // Pseudo-types |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 213 | NUMBER_OF_MODES, // There are at most 15 modes with noncompact encoding. |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 214 | NONE, // never recorded |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 215 | LAST_CODE_ENUM = DEBUG_BREAK, |
| 216 | LAST_GCED_ENUM = GLOBAL_PROPERTY_CELL, |
| 217 | // Modes <= LAST_COMPACT_ENUM are guaranteed to have compact encoding. |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 218 | LAST_COMPACT_ENUM = CODE_TARGET_WITH_ID, |
| 219 | LAST_STANDARD_NONCOMPACT_ENUM = INTERNAL_REFERENCE |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 220 | }; |
| 221 | |
| 222 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 223 | RelocInfo() {} |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 224 | |
| 225 | RelocInfo(byte* pc, Mode rmode, intptr_t data, Code* host) |
| 226 | : pc_(pc), rmode_(rmode), data_(data), host_(host) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 227 | } |
| 228 | |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 229 | static inline bool IsConstructCall(Mode mode) { |
| 230 | return mode == CONSTRUCT_CALL; |
| 231 | } |
| 232 | static inline bool IsCodeTarget(Mode mode) { |
| 233 | return mode <= LAST_CODE_ENUM; |
| 234 | } |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 235 | static inline bool IsEmbeddedObject(Mode mode) { |
| 236 | return mode == EMBEDDED_OBJECT; |
| 237 | } |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 238 | // Is the relocation mode affected by GC? |
| 239 | static inline bool IsGCRelocMode(Mode mode) { |
| 240 | return mode <= LAST_GCED_ENUM; |
| 241 | } |
| 242 | static inline bool IsJSReturn(Mode mode) { |
| 243 | return mode == JS_RETURN; |
| 244 | } |
| 245 | static inline bool IsComment(Mode mode) { |
| 246 | return mode == COMMENT; |
| 247 | } |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 248 | static inline bool IsConstPool(Mode mode) { |
| 249 | return mode == CONST_POOL; |
| 250 | } |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 251 | static inline bool IsPosition(Mode mode) { |
| 252 | return mode == POSITION || mode == STATEMENT_POSITION; |
| 253 | } |
| 254 | static inline bool IsStatementPosition(Mode mode) { |
| 255 | return mode == STATEMENT_POSITION; |
| 256 | } |
| 257 | static inline bool IsExternalReference(Mode mode) { |
| 258 | return mode == EXTERNAL_REFERENCE; |
| 259 | } |
| 260 | static inline bool IsInternalReference(Mode mode) { |
| 261 | return mode == INTERNAL_REFERENCE; |
| 262 | } |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 263 | static inline bool IsDebugBreakSlot(Mode mode) { |
| 264 | return mode == DEBUG_BREAK_SLOT; |
| 265 | } |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 266 | static inline int ModeMask(Mode mode) { return 1 << mode; } |
| 267 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 268 | // Accessors |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 269 | byte* pc() const { return pc_; } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 270 | void set_pc(byte* pc) { pc_ = pc; } |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 271 | Mode rmode() const { return rmode_; } |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 272 | intptr_t data() const { return data_; } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 273 | Code* host() const { return host_; } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 274 | |
| 275 | // Apply a relocation by delta bytes |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 276 | INLINE(void apply(intptr_t delta)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 277 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 278 | // Is the pointer this relocation info refers to coded like a plain pointer |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 279 | // or is it strange in some way (e.g. relative or patched into a series of |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 280 | // instructions). |
| 281 | bool IsCodedSpecially(); |
| 282 | |
ager@chromium.org | 3291210 | 2009-01-16 10:38:43 +0000 | [diff] [blame] | 283 | // Read/modify the code target in the branch/call instruction |
| 284 | // this relocation applies to; |
| 285 | // can only be called if IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 286 | INLINE(Address target_address()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 287 | INLINE(void set_target_address(Address target, |
| 288 | WriteBarrierMode mode = UPDATE_WRITE_BARRIER)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 289 | INLINE(Object* target_object()); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 290 | INLINE(Handle<Object> target_object_handle(Assembler* origin)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 291 | INLINE(Object** target_object_address()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 292 | INLINE(void set_target_object(Object* target, |
| 293 | WriteBarrierMode mode = UPDATE_WRITE_BARRIER)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 294 | INLINE(JSGlobalPropertyCell* target_cell()); |
| 295 | INLINE(Handle<JSGlobalPropertyCell> target_cell_handle()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 296 | INLINE(void set_target_cell(JSGlobalPropertyCell* cell, |
| 297 | WriteBarrierMode mode = UPDATE_WRITE_BARRIER)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 298 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 299 | |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 300 | // Read the address of the word containing the target_address in an |
| 301 | // instruction stream. What this means exactly is architecture-independent. |
| 302 | // The only architecture-independent user of this function is the serializer. |
| 303 | // The serializer uses it to find out how many raw bytes of instruction to |
| 304 | // output before the next target. Architecture-independent code shouldn't |
| 305 | // dereference the pointer it gets back from this. |
ager@chromium.org | 3291210 | 2009-01-16 10:38:43 +0000 | [diff] [blame] | 306 | INLINE(Address target_address_address()); |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 307 | // This indicates how much space a target takes up when deserializing a code |
| 308 | // stream. For most architectures this is just the size of a pointer. For |
| 309 | // an instruction like movw/movt where the target bits are mixed into the |
| 310 | // instruction bits the size of the target will be zero, indicating that the |
| 311 | // serializer should not step forwards in memory after a target is resolved |
| 312 | // and written. In this case the target_address_address function above |
| 313 | // should return the end of the instructions to be patched, allowing the |
| 314 | // deserializer to deserialize the instructions as raw bytes and put them in |
| 315 | // place, ready to be patched with the target. |
| 316 | INLINE(int target_address_size()); |
ager@chromium.org | 3291210 | 2009-01-16 10:38:43 +0000 | [diff] [blame] | 317 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 318 | // Read/modify the reference in the instruction this relocation |
| 319 | // applies to; can only be called if rmode_ is external_reference |
| 320 | INLINE(Address* target_reference_address()); |
| 321 | |
| 322 | // Read/modify the address of a call instruction. This is used to relocate |
| 323 | // the break points where straight-line code is patched with a call |
| 324 | // instruction. |
| 325 | INLINE(Address call_address()); |
| 326 | INLINE(void set_call_address(Address target)); |
| 327 | INLINE(Object* call_object()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 328 | INLINE(void set_call_object(Object* target)); |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 329 | INLINE(Object** call_object_address()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 330 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 331 | template<typename StaticVisitor> inline void Visit(Heap* heap); |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 332 | inline void Visit(ObjectVisitor* v); |
| 333 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 334 | // Patch the code with some other code. |
iposva@chromium.org | 245aa85 | 2009-02-10 00:49:54 +0000 | [diff] [blame] | 335 | void PatchCode(byte* instructions, int instruction_count); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 336 | |
| 337 | // Patch the code with a call. |
iposva@chromium.org | 245aa85 | 2009-02-10 00:49:54 +0000 | [diff] [blame] | 338 | void PatchCodeWithCall(Address target, int guard_bytes); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 339 | |
| 340 | // Check whether this return sequence has been patched |
| 341 | // with a call to the debugger. |
| 342 | INLINE(bool IsPatchedReturnSequence()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 343 | |
vegorov@chromium.org | 2356e6f | 2010-06-09 09:38:56 +0000 | [diff] [blame] | 344 | // Check whether this debug break slot has been patched with a call to the |
| 345 | // debugger. |
| 346 | INLINE(bool IsPatchedDebugBreakSlotSequence()); |
| 347 | |
mads.s.ager@gmail.com | 769cc96 | 2008-08-06 10:02:49 +0000 | [diff] [blame] | 348 | #ifdef ENABLE_DISASSEMBLER |
| 349 | // Printing |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 350 | static const char* RelocModeName(Mode rmode); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 351 | void Print(FILE* out); |
mads.s.ager@gmail.com | 769cc96 | 2008-08-06 10:02:49 +0000 | [diff] [blame] | 352 | #endif // ENABLE_DISASSEMBLER |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 353 | #ifdef DEBUG |
| 354 | // Debugging |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 355 | void Verify(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 356 | #endif |
| 357 | |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 358 | static const int kCodeTargetMask = (1 << (LAST_CODE_ENUM + 1)) - 1; |
| 359 | static const int kPositionMask = 1 << POSITION | 1 << STATEMENT_POSITION; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 360 | static const int kDataMask = |
| 361 | (1 << CODE_TARGET_WITH_ID) | kPositionMask | (1 << COMMENT); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 362 | static const int kApplyMask; // Modes affected by apply. Depends on arch. |
| 363 | |
| 364 | private: |
| 365 | // On ARM, note that pc_ is the address of the constant pool entry |
| 366 | // to be relocated and not the address of the instruction |
| 367 | // referencing the constant pool entry (except when rmode_ == |
| 368 | // comment). |
| 369 | byte* pc_; |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 370 | Mode rmode_; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 371 | intptr_t data_; |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 372 | Code* host_; |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 373 | #ifdef V8_TARGET_ARCH_MIPS |
| 374 | // Code and Embedded Object pointers in mips are stored split |
| 375 | // across two consecutive 32-bit instructions. Heap management |
| 376 | // routines expect to access these pointers indirectly. The following |
| 377 | // location provides a place for these pointers to exist natually |
| 378 | // when accessed via the Iterator. |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 379 | Object* reconstructed_obj_ptr_; |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 380 | // External-reference pointers are also split across instruction-pairs |
| 381 | // in mips, but are accessed via indirect pointers. This location |
| 382 | // provides a place for that pointer to exist naturally. Its address |
| 383 | // is returned by RelocInfo::target_reference_address(). |
| 384 | Address reconstructed_adr_ptr_; |
| 385 | #endif // V8_TARGET_ARCH_MIPS |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 386 | friend class RelocIterator; |
| 387 | }; |
| 388 | |
| 389 | |
| 390 | // RelocInfoWriter serializes a stream of relocation info. It writes towards |
| 391 | // lower addresses. |
| 392 | class RelocInfoWriter BASE_EMBEDDED { |
| 393 | public: |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 394 | RelocInfoWriter() : pos_(NULL), |
| 395 | last_pc_(NULL), |
| 396 | last_id_(0), |
| 397 | last_position_(0) {} |
| 398 | RelocInfoWriter(byte* pos, byte* pc) : pos_(pos), |
| 399 | last_pc_(pc), |
| 400 | last_id_(0), |
| 401 | last_position_(0) {} |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 402 | |
| 403 | byte* pos() const { return pos_; } |
| 404 | byte* last_pc() const { return last_pc_; } |
| 405 | |
| 406 | void Write(const RelocInfo* rinfo); |
| 407 | |
| 408 | // Update the state of the stream after reloc info buffer |
| 409 | // and/or code is moved while the stream is active. |
| 410 | void Reposition(byte* pos, byte* pc) { |
| 411 | pos_ = pos; |
| 412 | last_pc_ = pc; |
| 413 | } |
| 414 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 415 | // Max size (bytes) of a written RelocInfo. Longest encoding is |
| 416 | // ExtraTag, VariableLengthPCJump, ExtraTag, pc_delta, ExtraTag, data_delta. |
| 417 | // On ia32 and arm this is 1 + 4 + 1 + 1 + 1 + 4 = 12. |
| 418 | // On x64 this is 1 + 4 + 1 + 1 + 1 + 8 == 16; |
| 419 | // Here we use the maximum of the two. |
| 420 | static const int kMaxSize = 16; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 421 | |
| 422 | private: |
| 423 | inline uint32_t WriteVariableLengthPCJump(uint32_t pc_delta); |
| 424 | inline void WriteTaggedPC(uint32_t pc_delta, int tag); |
| 425 | inline void WriteExtraTaggedPC(uint32_t pc_delta, int extra_tag); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 426 | inline void WriteExtraTaggedIntData(int data_delta, int top_tag); |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 427 | inline void WriteExtraTaggedConstPoolData(int data); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 428 | inline void WriteExtraTaggedData(intptr_t data_delta, int top_tag); |
| 429 | inline void WriteTaggedData(intptr_t data_delta, int tag); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 430 | inline void WriteExtraTag(int extra_tag, int top_tag); |
| 431 | |
| 432 | byte* pos_; |
| 433 | byte* last_pc_; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 434 | int last_id_; |
| 435 | int last_position_; |
mads.s.ager@gmail.com | 9a4089a | 2008-09-01 08:55:01 +0000 | [diff] [blame] | 436 | DISALLOW_COPY_AND_ASSIGN(RelocInfoWriter); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 437 | }; |
| 438 | |
| 439 | |
| 440 | // A RelocIterator iterates over relocation information. |
| 441 | // Typical use: |
| 442 | // |
| 443 | // for (RelocIterator it(code); !it.done(); it.next()) { |
| 444 | // // do something with it.rinfo() here |
| 445 | // } |
| 446 | // |
| 447 | // A mask can be specified to skip unwanted modes. |
| 448 | class RelocIterator: public Malloced { |
| 449 | public: |
| 450 | // Create a new iterator positioned at |
| 451 | // the beginning of the reloc info. |
| 452 | // Relocation information with mode k is included in the |
| 453 | // iteration iff bit k of mode_mask is set. |
| 454 | explicit RelocIterator(Code* code, int mode_mask = -1); |
| 455 | explicit RelocIterator(const CodeDesc& desc, int mode_mask = -1); |
| 456 | |
| 457 | // Iteration |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 458 | bool done() const { return done_; } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 459 | void next(); |
| 460 | |
| 461 | // Return pointer valid until next next(). |
| 462 | RelocInfo* rinfo() { |
| 463 | ASSERT(!done()); |
| 464 | return &rinfo_; |
| 465 | } |
| 466 | |
| 467 | private: |
| 468 | // Advance* moves the position before/after reading. |
| 469 | // *Read* reads from current byte(s) into rinfo_. |
| 470 | // *Get* just reads and returns info on current byte. |
| 471 | void Advance(int bytes = 1) { pos_ -= bytes; } |
| 472 | int AdvanceGetTag(); |
| 473 | int GetExtraTag(); |
| 474 | int GetTopTag(); |
| 475 | void ReadTaggedPC(); |
| 476 | void AdvanceReadPC(); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 477 | void AdvanceReadId(); |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 478 | void AdvanceReadConstPoolData(); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 479 | void AdvanceReadPosition(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 480 | void AdvanceReadData(); |
| 481 | void AdvanceReadVariableLengthPCJump(); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 482 | int GetLocatableTypeTag(); |
| 483 | void ReadTaggedId(); |
| 484 | void ReadTaggedPosition(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 485 | |
| 486 | // If the given mode is wanted, set it in rinfo_ and return true. |
| 487 | // Else return false. Used for efficiently skipping unwanted modes. |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 488 | bool SetMode(RelocInfo::Mode mode) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 489 | return (mode_mask_ & (1 << mode)) ? (rinfo_.rmode_ = mode, true) : false; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 490 | } |
| 491 | |
| 492 | byte* pos_; |
| 493 | byte* end_; |
| 494 | RelocInfo rinfo_; |
| 495 | bool done_; |
| 496 | int mode_mask_; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 497 | int last_id_; |
| 498 | int last_position_; |
mads.s.ager@gmail.com | 9a4089a | 2008-09-01 08:55:01 +0000 | [diff] [blame] | 499 | DISALLOW_COPY_AND_ASSIGN(RelocIterator); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 500 | }; |
| 501 | |
| 502 | |
| 503 | //------------------------------------------------------------------------------ |
| 504 | // External function |
| 505 | |
| 506 | //---------------------------------------------------------------------------- |
| 507 | class IC_Utility; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 508 | class SCTableReference; |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 509 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 510 | class Debug_Address; |
| 511 | #endif |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 512 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 513 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 514 | // An ExternalReference represents a C++ address used in the generated |
| 515 | // code. All references to C++ functions and variables must be encapsulated in |
| 516 | // an ExternalReference instance. This is done in order to track the origin of |
| 517 | // all external references in the code so that they can be bound to the correct |
| 518 | // addresses when deserializing a heap. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 519 | class ExternalReference BASE_EMBEDDED { |
| 520 | public: |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 521 | // Used in the simulator to support different native api calls. |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 522 | enum Type { |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 523 | // Builtin call. |
| 524 | // MaybeObject* f(v8::internal::Arguments). |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 525 | BUILTIN_CALL, // default |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 526 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 527 | // Builtin that takes float arguments and returns an int. |
| 528 | // int f(double, double). |
| 529 | BUILTIN_COMPARE_CALL, |
| 530 | |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 531 | // Builtin call that returns floating point. |
| 532 | // double f(double, double). |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 533 | BUILTIN_FP_FP_CALL, |
| 534 | |
| 535 | // Builtin call that returns floating point. |
| 536 | // double f(double). |
| 537 | BUILTIN_FP_CALL, |
| 538 | |
| 539 | // Builtin call that returns floating point. |
| 540 | // double f(double, int). |
| 541 | BUILTIN_FP_INT_CALL, |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 542 | |
| 543 | // Direct call to API function callback. |
| 544 | // Handle<Value> f(v8::Arguments&) |
| 545 | DIRECT_API_CALL, |
| 546 | |
| 547 | // Direct call to accessor getter callback. |
| 548 | // Handle<value> f(Local<String> property, AccessorInfo& info) |
| 549 | DIRECT_GETTER_CALL |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 550 | }; |
| 551 | |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 552 | static void SetUp(); |
| 553 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 554 | typedef void* ExternalReferenceRedirector(void* original, Type type); |
| 555 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 556 | ExternalReference(Builtins::CFunctionId id, Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 557 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 558 | ExternalReference(ApiFunction* ptr, Type type, Isolate* isolate); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 559 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 560 | ExternalReference(Builtins::Name name, Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 561 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 562 | ExternalReference(Runtime::FunctionId id, Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 563 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 564 | ExternalReference(const Runtime::Function* f, Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 565 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 566 | ExternalReference(const IC_Utility& ic_utility, Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 567 | |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 568 | #ifdef ENABLE_DEBUGGER_SUPPORT |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 569 | ExternalReference(const Debug_Address& debug_address, Isolate* isolate); |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 570 | #endif |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 571 | |
| 572 | explicit ExternalReference(StatsCounter* counter); |
| 573 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 574 | ExternalReference(Isolate::AddressId id, Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 575 | |
| 576 | explicit ExternalReference(const SCTableReference& table_ref); |
| 577 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 578 | // Isolate::Current() as an external reference. |
| 579 | static ExternalReference isolate_address(); |
| 580 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 581 | // One-of-a-kind references. These references are not part of a general |
| 582 | // pattern. This means that they have to be added to the |
| 583 | // ExternalReferenceTable in serialize.cc manually. |
| 584 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 585 | static ExternalReference incremental_marking_record_write_function( |
| 586 | Isolate* isolate); |
| 587 | static ExternalReference incremental_evacuation_record_write_function( |
| 588 | Isolate* isolate); |
| 589 | static ExternalReference store_buffer_overflow_function( |
| 590 | Isolate* isolate); |
| 591 | static ExternalReference flush_icache_function(Isolate* isolate); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 592 | static ExternalReference perform_gc_function(Isolate* isolate); |
| 593 | static ExternalReference fill_heap_number_with_random_function( |
| 594 | Isolate* isolate); |
| 595 | static ExternalReference random_uint32_function(Isolate* isolate); |
| 596 | static ExternalReference transcendental_cache_array_address(Isolate* isolate); |
| 597 | static ExternalReference delete_handle_scope_extensions(Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 598 | |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 599 | static ExternalReference get_date_field_function(Isolate* isolate); |
| 600 | static ExternalReference date_cache_stamp(Isolate* isolate); |
| 601 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 602 | // Deoptimization support. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 603 | static ExternalReference new_deoptimizer_function(Isolate* isolate); |
| 604 | static ExternalReference compute_output_frames_function(Isolate* isolate); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 605 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 606 | // Static data in the keyed lookup cache. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 607 | static ExternalReference keyed_lookup_cache_keys(Isolate* isolate); |
| 608 | static ExternalReference keyed_lookup_cache_field_offsets(Isolate* isolate); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 609 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 610 | // Static variable Heap::roots_array_start() |
| 611 | static ExternalReference roots_array_start(Isolate* isolate); |
ager@chromium.org | ab99eea | 2009-08-25 07:05:41 +0000 | [diff] [blame] | 612 | |
ager@chromium.org | 6f10e41 | 2009-02-13 10:11:16 +0000 | [diff] [blame] | 613 | // Static variable StackGuard::address_of_jslimit() |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 614 | static ExternalReference address_of_stack_limit(Isolate* isolate); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 615 | |
| 616 | // Static variable StackGuard::address_of_real_jslimit() |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 617 | static ExternalReference address_of_real_stack_limit(Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 618 | |
ager@chromium.org | 3291210 | 2009-01-16 10:38:43 +0000 | [diff] [blame] | 619 | // Static variable RegExpStack::limit_address() |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 620 | static ExternalReference address_of_regexp_stack_limit(Isolate* isolate); |
ager@chromium.org | 3291210 | 2009-01-16 10:38:43 +0000 | [diff] [blame] | 621 | |
fschneider@chromium.org | 0c20e67 | 2010-01-14 15:28:53 +0000 | [diff] [blame] | 622 | // Static variables for RegExp. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 623 | static ExternalReference address_of_static_offsets_vector(Isolate* isolate); |
| 624 | static ExternalReference address_of_regexp_stack_memory_address( |
| 625 | Isolate* isolate); |
| 626 | static ExternalReference address_of_regexp_stack_memory_size( |
| 627 | Isolate* isolate); |
fschneider@chromium.org | 0c20e67 | 2010-01-14 15:28:53 +0000 | [diff] [blame] | 628 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 629 | // Static variable Heap::NewSpaceStart() |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 630 | static ExternalReference new_space_start(Isolate* isolate); |
| 631 | static ExternalReference new_space_mask(Isolate* isolate); |
| 632 | static ExternalReference heap_always_allocate_scope_depth(Isolate* isolate); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 633 | static ExternalReference new_space_mark_bits(Isolate* isolate); |
| 634 | |
| 635 | // Write barrier. |
| 636 | static ExternalReference store_buffer_top(Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 637 | |
| 638 | // Used for fast allocation in generated code. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 639 | static ExternalReference new_space_allocation_top_address(Isolate* isolate); |
| 640 | static ExternalReference new_space_allocation_limit_address(Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 641 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 642 | static ExternalReference double_fp_operation(Token::Value operation, |
| 643 | Isolate* isolate); |
| 644 | static ExternalReference compare_doubles(Isolate* isolate); |
| 645 | static ExternalReference power_double_double_function(Isolate* isolate); |
| 646 | static ExternalReference power_double_int_function(Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 647 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 648 | static ExternalReference handle_scope_next_address(); |
| 649 | static ExternalReference handle_scope_limit_address(); |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 650 | static ExternalReference handle_scope_level_address(); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 651 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 652 | static ExternalReference scheduled_exception_address(Isolate* isolate); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 653 | static ExternalReference address_of_pending_message_obj(Isolate* isolate); |
| 654 | static ExternalReference address_of_has_pending_message(Isolate* isolate); |
| 655 | static ExternalReference address_of_pending_message_script(Isolate* isolate); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 656 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 657 | // Static variables containing common double constants. |
| 658 | static ExternalReference address_of_min_int(); |
| 659 | static ExternalReference address_of_one_half(); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 660 | static ExternalReference address_of_minus_zero(); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 661 | static ExternalReference address_of_zero(); |
| 662 | static ExternalReference address_of_uint8_max_value(); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 663 | static ExternalReference address_of_negative_infinity(); |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 664 | static ExternalReference address_of_canonical_non_hole_nan(); |
| 665 | static ExternalReference address_of_the_hole_nan(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 666 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 667 | static ExternalReference math_sin_double_function(Isolate* isolate); |
| 668 | static ExternalReference math_cos_double_function(Isolate* isolate); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 669 | static ExternalReference math_tan_double_function(Isolate* isolate); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 670 | static ExternalReference math_log_double_function(Isolate* isolate); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 671 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 672 | static ExternalReference page_flags(Page* page); |
| 673 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 674 | Address address() const {return reinterpret_cast<Address>(address_);} |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 675 | |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 676 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 677 | // Function Debug::Break() |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 678 | static ExternalReference debug_break(Isolate* isolate); |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 679 | |
| 680 | // Used to check if single stepping is enabled in generated code. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 681 | static ExternalReference debug_step_in_fp_address(Isolate* isolate); |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 682 | #endif |
| 683 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 684 | #ifndef V8_INTERPRETED_REGEXP |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 685 | // C functions called from RegExp generated code. |
| 686 | |
| 687 | // Function NativeRegExpMacroAssembler::CaseInsensitiveCompareUC16() |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 688 | static ExternalReference re_case_insensitive_compare_uc16(Isolate* isolate); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 689 | |
| 690 | // Function RegExpMacroAssembler*::CheckStackGuardState() |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 691 | static ExternalReference re_check_stack_guard_state(Isolate* isolate); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 692 | |
| 693 | // Function NativeRegExpMacroAssembler::GrowStack() |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 694 | static ExternalReference re_grow_stack(Isolate* isolate); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 695 | |
| 696 | // byte NativeRegExpMacroAssembler::word_character_bitmap |
| 697 | static ExternalReference re_word_character_map(); |
| 698 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 699 | #endif |
| 700 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 701 | // This lets you register a function that rewrites all external references. |
| 702 | // Used by the ARM simulator to catch calls to external references. |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 703 | static void set_redirector(Isolate* isolate, |
| 704 | ExternalReferenceRedirector* redirector) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 705 | // We can't stack them. |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 706 | ASSERT(isolate->external_reference_redirector() == NULL); |
| 707 | isolate->set_external_reference_redirector( |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 708 | reinterpret_cast<ExternalReferenceRedirectorPointer*>(redirector)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 709 | } |
| 710 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 711 | private: |
| 712 | explicit ExternalReference(void* address) |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 713 | : address_(address) {} |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 714 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 715 | static void* Redirect(Isolate* isolate, |
| 716 | void* address, |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 717 | Type type = ExternalReference::BUILTIN_CALL) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 718 | ExternalReferenceRedirector* redirector = |
| 719 | reinterpret_cast<ExternalReferenceRedirector*>( |
| 720 | isolate->external_reference_redirector()); |
| 721 | if (redirector == NULL) return address; |
| 722 | void* answer = (*redirector)(address, type); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 723 | return answer; |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 724 | } |
| 725 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 726 | static void* Redirect(Isolate* isolate, |
| 727 | Address address_arg, |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 728 | Type type = ExternalReference::BUILTIN_CALL) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 729 | ExternalReferenceRedirector* redirector = |
| 730 | reinterpret_cast<ExternalReferenceRedirector*>( |
| 731 | isolate->external_reference_redirector()); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 732 | void* address = reinterpret_cast<void*>(address_arg); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 733 | void* answer = (redirector == NULL) ? |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 734 | address : |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 735 | (*redirector)(address, type); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 736 | return answer; |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 737 | } |
| 738 | |
| 739 | void* address_; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 740 | }; |
| 741 | |
| 742 | |
| 743 | // ----------------------------------------------------------------------------- |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 744 | // Position recording support |
| 745 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 746 | struct PositionState { |
| 747 | PositionState() : current_position(RelocInfo::kNoPosition), |
| 748 | written_position(RelocInfo::kNoPosition), |
| 749 | current_statement_position(RelocInfo::kNoPosition), |
| 750 | written_statement_position(RelocInfo::kNoPosition) {} |
| 751 | |
| 752 | int current_position; |
| 753 | int written_position; |
| 754 | |
| 755 | int current_statement_position; |
| 756 | int written_statement_position; |
| 757 | }; |
| 758 | |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 759 | |
| 760 | class PositionsRecorder BASE_EMBEDDED { |
| 761 | public: |
| 762 | explicit PositionsRecorder(Assembler* assembler) |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 763 | : assembler_(assembler) { |
| 764 | #ifdef ENABLE_GDB_JIT_INTERFACE |
| 765 | gdbjit_lineinfo_ = NULL; |
| 766 | #endif |
| 767 | } |
| 768 | |
| 769 | #ifdef ENABLE_GDB_JIT_INTERFACE |
| 770 | ~PositionsRecorder() { |
| 771 | delete gdbjit_lineinfo_; |
| 772 | } |
| 773 | |
| 774 | void StartGDBJITLineInfoRecording() { |
| 775 | if (FLAG_gdbjit) { |
| 776 | gdbjit_lineinfo_ = new GDBJITLineInfo(); |
| 777 | } |
| 778 | } |
| 779 | |
| 780 | GDBJITLineInfo* DetachGDBJITLineInfo() { |
| 781 | GDBJITLineInfo* lineinfo = gdbjit_lineinfo_; |
| 782 | gdbjit_lineinfo_ = NULL; // To prevent deallocation in destructor. |
| 783 | return lineinfo; |
| 784 | } |
| 785 | #endif |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 786 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 787 | // Set current position to pos. |
| 788 | void RecordPosition(int pos); |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 789 | |
| 790 | // Set current statement position to pos. |
| 791 | void RecordStatementPosition(int pos); |
| 792 | |
| 793 | // Write recorded positions to relocation information. |
| 794 | bool WriteRecordedPositions(); |
| 795 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 796 | int current_position() const { return state_.current_position; } |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 797 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 798 | int current_statement_position() const { |
| 799 | return state_.current_statement_position; |
| 800 | } |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 801 | |
| 802 | private: |
| 803 | Assembler* assembler_; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 804 | PositionState state_; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 805 | #ifdef ENABLE_GDB_JIT_INTERFACE |
| 806 | GDBJITLineInfo* gdbjit_lineinfo_; |
| 807 | #endif |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 808 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 809 | friend class PreservePositionScope; |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 810 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 811 | DISALLOW_COPY_AND_ASSIGN(PositionsRecorder); |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 812 | }; |
| 813 | |
| 814 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 815 | class PreservePositionScope BASE_EMBEDDED { |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 816 | public: |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 817 | explicit PreservePositionScope(PositionsRecorder* positions_recorder) |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 818 | : positions_recorder_(positions_recorder), |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 819 | saved_state_(positions_recorder->state_) {} |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 820 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 821 | ~PreservePositionScope() { |
| 822 | positions_recorder_->state_ = saved_state_; |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 823 | } |
| 824 | |
| 825 | private: |
| 826 | PositionsRecorder* positions_recorder_; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 827 | const PositionState saved_state_; |
| 828 | |
| 829 | DISALLOW_COPY_AND_ASSIGN(PreservePositionScope); |
whesse@chromium.org | f0ac72d | 2010-11-08 12:47:26 +0000 | [diff] [blame] | 830 | }; |
| 831 | |
| 832 | |
| 833 | // ----------------------------------------------------------------------------- |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 834 | // Utility functions |
| 835 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 836 | inline bool is_intn(int x, int n) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 837 | return -(1 << (n-1)) <= x && x < (1 << (n-1)); |
| 838 | } |
| 839 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 840 | inline bool is_int8(int x) { return is_intn(x, 8); } |
| 841 | inline bool is_int16(int x) { return is_intn(x, 16); } |
| 842 | inline bool is_int18(int x) { return is_intn(x, 18); } |
| 843 | inline bool is_int24(int x) { return is_intn(x, 24); } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 844 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 845 | inline bool is_uintn(int x, int n) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 846 | return (x & -(1 << n)) == 0; |
| 847 | } |
| 848 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 849 | inline bool is_uint2(int x) { return is_uintn(x, 2); } |
| 850 | inline bool is_uint3(int x) { return is_uintn(x, 3); } |
| 851 | inline bool is_uint4(int x) { return is_uintn(x, 4); } |
| 852 | inline bool is_uint5(int x) { return is_uintn(x, 5); } |
| 853 | inline bool is_uint6(int x) { return is_uintn(x, 6); } |
| 854 | inline bool is_uint8(int x) { return is_uintn(x, 8); } |
| 855 | inline bool is_uint10(int x) { return is_uintn(x, 10); } |
| 856 | inline bool is_uint12(int x) { return is_uintn(x, 12); } |
| 857 | inline bool is_uint16(int x) { return is_uintn(x, 16); } |
| 858 | inline bool is_uint24(int x) { return is_uintn(x, 24); } |
| 859 | inline bool is_uint26(int x) { return is_uintn(x, 26); } |
| 860 | inline bool is_uint28(int x) { return is_uintn(x, 28); } |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 861 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 862 | inline int NumberOfBitsSet(uint32_t x) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 863 | unsigned int num_bits_set; |
| 864 | for (num_bits_set = 0; x; x >>= 1) { |
| 865 | num_bits_set += x & 1; |
| 866 | } |
| 867 | return num_bits_set; |
| 868 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 869 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 870 | bool EvalComparison(Token::Value op, double op1, double op2); |
| 871 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 872 | // Computes pow(x, y) with the special cases in the spec for Math.pow. |
| 873 | double power_double_int(double x, int y); |
| 874 | double power_double_double(double x, double y); |
| 875 | |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 876 | // Helper class for generating code or data associated with the code |
| 877 | // right after a call instruction. As an example this can be used to |
| 878 | // generate safepoint data after calls for crankshaft. |
| 879 | class CallWrapper { |
| 880 | public: |
| 881 | CallWrapper() { } |
| 882 | virtual ~CallWrapper() { } |
| 883 | // Called just before emitting a call. Argument is the size of the generated |
| 884 | // call code. |
| 885 | virtual void BeforeCall(int call_size) const = 0; |
| 886 | // Called just after emitting a call, i.e., at the return site for the call. |
| 887 | virtual void AfterCall() const = 0; |
| 888 | }; |
| 889 | |
| 890 | class NullCallWrapper : public CallWrapper { |
| 891 | public: |
| 892 | NullCallWrapper() { } |
| 893 | virtual ~NullCallWrapper() { } |
| 894 | virtual void BeforeCall(int call_size) const { } |
| 895 | virtual void AfterCall() const { } |
| 896 | }; |
| 897 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 898 | } } // namespace v8::internal |
| 899 | |
| 900 | #endif // V8_ASSEMBLER_H_ |