stubdefs.cpp revision 75425b731c514bf90c985275d80aa7886727d83f
1/* 2 * In the C mterp stubs, "goto" is a function call followed immediately 3 * by a return. 4 */ 5 6#define GOTO_TARGET_DECL(_target, ...) \ 7 extern "C" void dvmMterp_##_target(Thread* self, ## __VA_ARGS__); 8 9/* (void)xxx to quiet unused variable compiler warnings. */ 10#define GOTO_TARGET(_target, ...) \ 11 void dvmMterp_##_target(Thread* self, ## __VA_ARGS__) { \ 12 u2 ref, vsrc1, vsrc2, vdst; \ 13 u2 inst = FETCH(0); \ 14 const Method* methodToCall; \ 15 StackSaveArea* debugSaveArea; \ 16 (void)ref; (void)vsrc1; (void)vsrc2; (void)vdst; (void)inst; \ 17 (void)methodToCall; (void)debugSaveArea; 18 19#define GOTO_TARGET_END } 20 21/* 22 * Redefine what used to be local variable accesses into Thread struct 23 * references. (These are undefined down in "footer.cpp".) 24 */ 25#define retval self->interpSave.retval 26#define pc self->interpSave.pc 27#define fp self->interpSave.curFrame 28#define curMethod self->interpSave.method 29#define methodClassDex self->interpSave.methodClassDex 30#define debugTrackedRefStart self->interpSave.debugTrackedRefStart 31 32/* ugh */ 33#define STUB_HACK(x) x 34#if defined(WITH_JIT) 35#define JIT_STUB_HACK(x) x 36#else 37#define JIT_STUB_HACK(x) 38#endif 39 40/* 41 * InterpSave's pc and fp must be valid when breaking out to a 42 * "Reportxxx" routine. Because the portable interpreter uses local 43 * variables for these, we must flush prior. Stubs, however, use 44 * the interpSave vars directly, so this is a nop for stubs. 45 */ 46#define PC_FP_TO_SELF() 47#define PC_TO_SELF() 48 49/* 50 * Opcode handler framing macros. Here, each opcode is a separate function 51 * that takes a "self" argument and returns void. We can't declare 52 * these "static" because they may be called from an assembly stub. 53 * (void)xxx to quiet unused variable compiler warnings. 54 */ 55#define HANDLE_OPCODE(_op) \ 56 extern "C" void dvmMterp_##_op(Thread* self); \ 57 void dvmMterp_##_op(Thread* self) { \ 58 u4 ref; \ 59 u2 vsrc1, vsrc2, vdst; \ 60 u2 inst = FETCH(0); \ 61 (void)ref; (void)vsrc1; (void)vsrc2; (void)vdst; (void)inst; 62 63#define OP_END } 64 65/* 66 * Like the "portable" FINISH, but don't reload "inst", and return to caller 67 * when done. Further, debugger/profiler checks are handled 68 * before handler execution in mterp, so we don't do them here either. 69 */ 70#if defined(WITH_JIT) 71#define FINISH(_offset) { \ 72 ADJUST_PC(_offset); \ 73 if (self->interpBreak.ctl.subMode & kSubModeJitTraceBuild) { \ 74 dvmCheckJit(pc, self); \ 75 } \ 76 return; \ 77 } 78#else 79#define FINISH(_offset) { \ 80 ADJUST_PC(_offset); \ 81 return; \ 82 } 83#endif 84 85#define FINISH_BKPT(_opcode) /* FIXME? */ 86#define DISPATCH_EXTENDED(_opcode) /* FIXME? */ 87 88/* 89 * The "goto label" statements turn into function calls followed by 90 * return statements. Some of the functions take arguments, which in the 91 * portable interpreter are handled by assigning values to globals. 92 */ 93 94#define GOTO_exceptionThrown() \ 95 do { \ 96 dvmMterp_exceptionThrown(self); \ 97 return; \ 98 } while(false) 99 100#define GOTO_returnFromMethod() \ 101 do { \ 102 dvmMterp_returnFromMethod(self); \ 103 return; \ 104 } while(false) 105 106#define GOTO_invoke(_target, _methodCallRange, _jumboFormat) \ 107 do { \ 108 dvmMterp_##_target(self, _methodCallRange, _jumboFormat); \ 109 return; \ 110 } while(false) 111 112#define GOTO_invokeMethod(_methodCallRange, _methodToCall, _vsrc1, _vdst) \ 113 do { \ 114 dvmMterp_invokeMethod(self, _methodCallRange, _methodToCall, \ 115 _vsrc1, _vdst); \ 116 return; \ 117 } while(false) 118 119/* 120 * As a special case, "goto bail" turns into a longjmp. 121 */ 122#define GOTO_bail() \ 123 dvmMterpStdBail(self) 124 125/* 126 * Periodically check for thread suspension. 127 * 128 * While we're at it, see if a debugger has attached or the profiler has 129 * started. 130 */ 131#define PERIODIC_CHECKS(_pcadj) { \ 132 if (dvmCheckSuspendQuick(self)) { \ 133 EXPORT_PC(); /* need for precise GC */ \ 134 dvmCheckSuspendPending(self); \ 135 } \ 136 } 137