/* * Load a class pointer value into a fixed or temp register. Target * register is clobbered, and marked inUse. */ static ArmLIR *loadClassPointer(CompilationUnit *cUnit, int rDest, int value) { ArmLIR *res; cUnit->hasClassLiterals = true; if (dvmCompilerIsTemp(cUnit, rDest)) { dvmCompilerClobber(cUnit, rDest); dvmCompilerMarkInUse(cUnit, rDest); } ArmLIR *dataTarget = scanLiteralPool(cUnit->classPointerList, value, 0); if (dataTarget == NULL) { dataTarget = addWordData(cUnit, &cUnit->classPointerList, value); /* Counts the number of class pointers in this translation */ cUnit->numClassPointers++; } ArmLIR *loadPcRel = (ArmLIR *) dvmCompilerNew(sizeof(ArmLIR), true); loadPcRel->opcode = kThumbLdrPcRel; loadPcRel->generic.target = (LIR *) dataTarget; loadPcRel->operands[0] = rDest; setupResourceMasks(loadPcRel); setMemRefType(loadPcRel, true, kLiteral); loadPcRel->aliasInfo = dataTarget->operands[0]; res = loadPcRel; dvmCompilerAppendLIR(cUnit, (LIR *) loadPcRel); return res; }
/* * Load an immediate value into a fixed or temp register. Target * register is clobbered, and marked inUse. */ static ArmLIR *loadConstant(CompilationUnit *cUnit, int rDest, int value) { if (dvmCompilerIsTemp(cUnit, rDest)) { dvmCompilerClobber(cUnit, rDest); dvmCompilerMarkInUse(cUnit, rDest); } return loadConstantNoClobber(cUnit, rDest, value); }
/* * Generate array store * */ static void genArrayPut(CompilationUnit *cUnit, MIR *mir, OpSize size, RegLocation rlArray, RegLocation rlIndex, RegLocation rlSrc, int scale) { RegisterClass regClass = dvmCompilerRegClassBySize(size); int lenOffset = OFFSETOF_MEMBER(ArrayObject, length); int dataOffset = OFFSETOF_MEMBER(ArrayObject, contents); int regPtr; rlArray = loadValue(cUnit, rlArray, kCoreReg); rlIndex = loadValue(cUnit, rlIndex, kCoreReg); if (dvmCompilerIsTemp(cUnit, rlArray.lowReg)) { dvmCompilerClobber(cUnit, rlArray.lowReg); regPtr = rlArray.lowReg; } else { regPtr = dvmCompilerAllocTemp(cUnit); genRegCopy(cUnit, regPtr, rlArray.lowReg); } /* null object? */ ArmLIR * pcrLabel = NULL; if (!(mir->OptimizationFlags & MIR_IGNORE_NULL_CHECK)) { pcrLabel = genNullCheck(cUnit, rlArray.sRegLow, rlArray.lowReg, mir->offset, NULL); } if (!(mir->OptimizationFlags & MIR_IGNORE_RANGE_CHECK)) { int regLen = dvmCompilerAllocTemp(cUnit); //NOTE: max live temps(4) here. /* Get len */ loadWordDisp(cUnit, rlArray.lowReg, lenOffset, regLen); /* regPtr -> array data */ opRegImm(cUnit, kOpAdd, regPtr, dataOffset); genBoundsCheck(cUnit, rlIndex.lowReg, regLen, mir->offset, pcrLabel); dvmCompilerFreeTemp(cUnit, regLen); } else { /* regPtr -> array data */ opRegImm(cUnit, kOpAdd, regPtr, dataOffset); } /* at this point, regPtr points to array, 2 live temps */ if ((size == kLong) || (size == kDouble)) { //TODO: need specific wide routine that can handle fp regs if (scale) { int rNewIndex = dvmCompilerAllocTemp(cUnit); opRegRegImm(cUnit, kOpLsl, rNewIndex, rlIndex.lowReg, scale); opRegReg(cUnit, kOpAdd, regPtr, rNewIndex); } else { opRegReg(cUnit, kOpAdd, regPtr, rlIndex.lowReg); } rlSrc = loadValueWide(cUnit, rlSrc, regClass); HEAP_ACCESS_SHADOW(true); storePair(cUnit, regPtr, rlSrc.lowReg, rlSrc.highReg); HEAP_ACCESS_SHADOW(false); dvmCompilerFreeTemp(cUnit, regPtr); } else { rlSrc = loadValue(cUnit, rlSrc, regClass); HEAP_ACCESS_SHADOW(true); storeBaseIndexed(cUnit, regPtr, rlIndex.lowReg, rlSrc.lowReg, scale, size); HEAP_ACCESS_SHADOW(false); } }