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| 1 // Copyright 2008 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are |
| 4 // met: |
| 5 // |
| 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided |
| 11 // with the distribution. |
| 12 // * Neither the name of Google Inc. nor the names of its |
| 13 // contributors may be used to endorse or promote products derived |
| 14 // from this software without specific prior written permission. |
| 15 // |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 |
| 28 #ifndef V8_SIMULATOR_IA32_H_ |
| 29 #define V8_SIMULATOR_IA32_H_ |
| 30 |
| 31 |
| 32 // Since there is no simulator for the ia32 architecture the only thing we can |
| 33 // do is to call the entry directly. |
| 34 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \ |
| 35 entry(p0, p1, p2, p3, p4); |
| 36 |
| 37 // Calculated the stack limit beyond which we will throw stack overflow errors. |
| 38 // This macro must be called from a C++ method. It relies on being able to take |
| 39 // the address of "this" to get a value on the current execution stack and then |
| 40 // calculates the stack limit based on that value. |
| 41 // NOTE: The check for overflow is not safe as there is no guarantee that the |
| 42 // running thread has its stack in all memory up to address 0x00000000. |
| 43 #define GENERATED_CODE_STACK_LIMIT(limit) \ |
| 44 (reinterpret_cast<uintptr_t>(this) >= limit ? \ |
| 45 reinterpret_cast<uintptr_t>(this) - limit : 0) |
| 46 |
| 47 #endif // V8_SIMULATOR_IA32_H_ |
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