1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 /* 18 * This file contains codegen for the Thumb ISA and is intended to be 19 * includes by: 20 * 21 * Codegen-$(TARGET_ARCH_VARIANT).c 22 * 23 */ 24 25 /* Stress mode for testing: if defined will reverse corereg/floatreg hint */ 26 //#define REGCLASS_STRESS_MODE 27 28 /* 29 * Alloc a pair of core registers, or a double. Low reg in low byte, 30 * high reg in next byte. 31 */ 32 int dvmCompilerAllocTypedTempPair(CompilationUnit *cUnit, 33 bool fpHint, int regClass) 34 { 35 int highReg; 36 int lowReg; 37 int res = 0; 38 39 #if defined(REGCLASS_STRESS_MODE) 40 fpHint = !fpHint; 41 #endif 42 43 if (((regClass == kAnyReg) && fpHint) || (regClass == kFPReg)) { 44 lowReg = dvmCompilerAllocTempDouble(cUnit); 45 highReg = lowReg + 1; 46 } else { 47 lowReg = dvmCompilerAllocTemp(cUnit); 48 highReg = dvmCompilerAllocTemp(cUnit); 49 } 50 res = (lowReg & 0xff) | ((highReg & 0xff) << 8); 51 return res; 52 } 53 54 int dvmCompilerAllocTypedTemp(CompilationUnit *cUnit, bool fpHint, 55 int regClass) 56 { 57 #if defined(REGCLASS_STRESS_MODE) 58 fpHint = !fpHint; 59 #endif 60 if (((regClass == kAnyReg) && fpHint) || (regClass == kFPReg)) 61 return dvmCompilerAllocTempFloat(cUnit); 62 return dvmCompilerAllocTemp(cUnit); 63 } 64
