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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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35 | 35 |
36 #ifndef V8_ARM_SIMULATOR_ARM_H_ | 36 #ifndef V8_ARM_SIMULATOR_ARM_H_ |
37 #define V8_ARM_SIMULATOR_ARM_H_ | 37 #define V8_ARM_SIMULATOR_ARM_H_ |
38 | 38 |
39 #if defined(__arm__) | 39 #if defined(__arm__) |
40 | 40 |
41 // When running without a simulator we call the entry directly. | 41 // When running without a simulator we call the entry directly. |
42 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \ | 42 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \ |
43 (entry(p0, p1, p2, p3, p4)) | 43 (entry(p0, p1, p2, p3, p4)) |
44 | 44 |
45 // Calculated the stack limit beyond which we will throw stack overflow errors. | 45 // The stack limit beyond which we will throw stack overflow errors in |
46 // This macro must be called from a C++ method. It relies on being able to take | 46 // generated code. Because generated code on arm uses the C stack, we |
47 // the address of "this" to get a value on the current execution stack and then | 47 // just use the C stack limit. |
48 // calculates the stack limit based on that value. | 48 #define GENERATED_CODE_STACK_LIMIT(c_limit) \ |
49 #define GENERATED_CODE_STACK_LIMIT(limit) \ | 49 (c_limit) |
50 (reinterpret_cast<uintptr_t>(this) - limit) | |
51 | 50 |
52 | 51 |
53 // Call the generated regexp code directly. The entry function pointer should | 52 // Call the generated regexp code directly. The entry function pointer should |
54 // expect seven int/pointer sized arguments and return an int. | 53 // expect seven int/pointer sized arguments and return an int. |
55 #define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6) \ | 54 #define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6) \ |
56 entry(p0, p1, p2, p3, p4, p5, p6) | 55 entry(p0, p1, p2, p3, p4, p5, p6) |
57 | 56 |
58 #else // defined(__arm__) | 57 #else // defined(__arm__) |
59 | 58 |
60 // When running with the simulator transition into simulated execution at this | 59 // When running with the simulator transition into simulated execution at this |
61 // point. | 60 // point. |
62 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \ | 61 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \ |
63 reinterpret_cast<Object*>( \ | 62 reinterpret_cast<Object*>( \ |
64 assembler::arm::Simulator::current()->Call(FUNCTION_ADDR(entry), 5, \ | 63 assembler::arm::Simulator::current()->Call(FUNCTION_ADDR(entry), 5, \ |
65 p0, p1, p2, p3, p4)) | 64 p0, p1, p2, p3, p4)) |
66 | 65 |
67 // The simulator has its own stack. Thus it has a different stack limit from | 66 // The simulator has its own stack. Thus it has a different stack limit from |
68 // the C-based native code. | 67 // the C-based native code. |
69 #define GENERATED_CODE_STACK_LIMIT(limit) \ | 68 #define GENERATED_CODE_STACK_LIMIT(c_limit) \ |
70 (assembler::arm::Simulator::current()->StackLimit()) | 69 (assembler::arm::Simulator::current()->StackLimit()) |
71 | 70 |
72 | 71 |
73 #define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6) \ | 72 #define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6) \ |
74 assembler::arm::Simulator::current()->Call( \ | 73 assembler::arm::Simulator::current()->Call( \ |
75 FUNCTION_ADDR(entry), 7, p0, p1, p2, p3, p4, p5, p6) | 74 FUNCTION_ADDR(entry), 7, p0, p1, p2, p3, p4, p5, p6) |
76 | 75 |
77 #include "constants-arm.h" | 76 #include "constants-arm.h" |
78 | 77 |
79 | 78 |
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215 // registered breakpoints | 214 // registered breakpoints |
216 Instr* break_pc_; | 215 Instr* break_pc_; |
217 instr_t break_instr_; | 216 instr_t break_instr_; |
218 }; | 217 }; |
219 | 218 |
220 } } // namespace assembler::arm | 219 } } // namespace assembler::arm |
221 | 220 |
222 #endif // defined(__arm__) | 221 #endif // defined(__arm__) |
223 | 222 |
224 #endif // V8_ARM_SIMULATOR_ARM_H_ | 223 #endif // V8_ARM_SIMULATOR_ARM_H_ |
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