| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "../../CompilerInternals.h" |
| #include "ArmLIR.h" |
| #include "../Ralloc.h" |
| |
| #include <string> |
| |
| static const char* coreRegNames[16] = { |
| "r0", |
| "r1", |
| "r2", |
| "r3", |
| "r4", |
| "r5", |
| "r6", |
| "r7", |
| "r8", |
| "rSELF", |
| "r10", |
| "r11", |
| "r12", |
| "sp", |
| "lr", |
| "pc", |
| }; |
| |
| |
| static const char* shiftNames[4] = { |
| "lsl", |
| "lsr", |
| "asr", |
| "ror"}; |
| |
| /* Decode and print a ARM register name */ |
| STATIC char* decodeRegList(ArmOpcode opcode, int vector, char* buf) |
| { |
| int i; |
| bool printed = false; |
| buf[0] = 0; |
| for (i = 0; i < 16; i++, vector >>= 1) { |
| if (vector & 0x1) { |
| int regId = i; |
| if (opcode == kThumbPush && i == 8) { |
| regId = r14lr; |
| } else if (opcode == kThumbPop && i == 8) { |
| regId = r15pc; |
| } |
| if (printed) { |
| sprintf(buf + strlen(buf), ", r%d", regId); |
| } else { |
| printed = true; |
| sprintf(buf, "r%d", regId); |
| } |
| } |
| } |
| return buf; |
| } |
| |
| STATIC char* decodeFPCSRegList(int count, int base, char* buf) |
| { |
| sprintf(buf, "s%d", base); |
| for (int i = 1; i < count; i++) { |
| sprintf(buf + strlen(buf), ", s%d",base + i); |
| } |
| return buf; |
| } |
| |
| STATIC int expandImmediate(int value) |
| { |
| int mode = (value & 0xf00) >> 8; |
| u4 bits = value & 0xff; |
| switch(mode) { |
| case 0: |
| return bits; |
| case 1: |
| return (bits << 16) | bits; |
| case 2: |
| return (bits << 24) | (bits << 8); |
| case 3: |
| return (bits << 24) | (bits << 16) | (bits << 8) | bits; |
| default: |
| break; |
| } |
| bits = (bits | 0x80) << 24; |
| return bits >> (((value & 0xf80) >> 7) - 8); |
| } |
| |
| const char* ccNames[] = {"eq","ne","cs","cc","mi","pl","vs","vc", |
| "hi","ls","ge","lt","gt","le","al","nv"}; |
| /* |
| * Interpret a format string and build a string no longer than size |
| * See format key in Assemble.c. |
| */ |
| STATIC std::string buildInsnString(const char* fmt, ArmLIR* lir, unsigned char* baseAddr) |
| { |
| std::string buf; |
| int i; |
| const char* fmtEnd = &fmt[strlen(fmt)]; |
| char tbuf[256]; |
| const char* name; |
| char nc; |
| while (fmt < fmtEnd) { |
| int operand; |
| if (*fmt == '!') { |
| fmt++; |
| DCHECK_LT(fmt, fmtEnd); |
| nc = *fmt++; |
| if (nc=='!') { |
| strcpy(tbuf, "!"); |
| } else { |
| DCHECK_LT(fmt, fmtEnd); |
| DCHECK_LT((unsigned)(nc-'0'), 4U); |
| operand = lir->operands[nc-'0']; |
| switch(*fmt++) { |
| case 'H': |
| if (operand != 0) { |
| sprintf(tbuf, ", %s %d",shiftNames[operand & 0x3], |
| operand >> 2); |
| } else { |
| strcpy(tbuf,""); |
| } |
| break; |
| case 'B': |
| switch (operand) { |
| case kSY: |
| name = "sy"; |
| break; |
| case kST: |
| name = "st"; |
| break; |
| case kISH: |
| name = "ish"; |
| break; |
| case kISHST: |
| name = "ishst"; |
| break; |
| case kNSH: |
| name = "nsh"; |
| break; |
| case kNSHST: |
| name = "shst"; |
| break; |
| default: |
| name = "DecodeError2"; |
| break; |
| } |
| strcpy(tbuf, name); |
| break; |
| case 'b': |
| strcpy(tbuf,"0000"); |
| for (i=3; i>= 0; i--) { |
| tbuf[i] += operand & 1; |
| operand >>= 1; |
| } |
| break; |
| case 'n': |
| operand = ~expandImmediate(operand); |
| sprintf(tbuf,"%d [%#x]", operand, operand); |
| break; |
| case 'm': |
| operand = expandImmediate(operand); |
| sprintf(tbuf,"%d [%#x]", operand, operand); |
| break; |
| case 's': |
| sprintf(tbuf,"s%d",operand & FP_REG_MASK); |
| break; |
| case 'S': |
| sprintf(tbuf,"d%d",(operand & FP_REG_MASK) >> 1); |
| break; |
| case 'h': |
| sprintf(tbuf,"%04x", operand); |
| break; |
| case 'M': |
| case 'd': |
| sprintf(tbuf,"%d", operand); |
| break; |
| case 'C': |
| sprintf(tbuf,"%s",coreRegNames[operand]); |
| break; |
| case 'E': |
| sprintf(tbuf,"%d", operand*4); |
| break; |
| case 'F': |
| sprintf(tbuf,"%d", operand*2); |
| break; |
| case 'c': |
| strcpy(tbuf, ccNames[operand]); |
| break; |
| case 't': |
| sprintf(tbuf,"0x%08x (L%p)", |
| (int) baseAddr + lir->generic.offset + 4 + |
| (operand << 1), |
| lir->generic.target); |
| break; |
| case 'u': { |
| int offset_1 = lir->operands[0]; |
| int offset_2 = NEXT_LIR(lir)->operands[0]; |
| intptr_t target = |
| ((((intptr_t) baseAddr + lir->generic.offset + 4) & |
| ~3) + (offset_1 << 21 >> 9) + (offset_2 << 1)) & |
| 0xfffffffc; |
| sprintf(tbuf, "%p", (void *) target); |
| break; |
| } |
| |
| /* Nothing to print for BLX_2 */ |
| case 'v': |
| strcpy(tbuf, "see above"); |
| break; |
| case 'R': |
| decodeRegList(lir->opcode, operand, tbuf); |
| break; |
| case 'P': |
| decodeFPCSRegList(operand, 16, tbuf); |
| break; |
| case 'Q': |
| decodeFPCSRegList(operand, 0, tbuf); |
| break; |
| default: |
| strcpy(tbuf,"DecodeError1"); |
| break; |
| } |
| buf += tbuf; |
| } |
| } else { |
| buf += *fmt++; |
| } |
| } |
| return buf; |
| } |
| |
| void oatDumpResourceMask(LIR* lir, u8 mask, const char* prefix) |
| { |
| char buf[256]; |
| buf[0] = 0; |
| ArmLIR* armLIR = (ArmLIR*) lir; |
| |
| if (mask == ENCODE_ALL) { |
| strcpy(buf, "all"); |
| } else { |
| char num[8]; |
| int i; |
| |
| for (i = 0; i < kRegEnd; i++) { |
| if (mask & (1ULL << i)) { |
| sprintf(num, "%d ", i); |
| strcat(buf, num); |
| } |
| } |
| |
| if (mask & ENCODE_CCODE) { |
| strcat(buf, "cc "); |
| } |
| if (mask & ENCODE_FP_STATUS) { |
| strcat(buf, "fpcc "); |
| } |
| |
| /* Memory bits */ |
| if (armLIR && (mask & ENCODE_DALVIK_REG)) { |
| sprintf(buf + strlen(buf), "dr%d%s", armLIR->aliasInfo & 0xffff, |
| (armLIR->aliasInfo & 0x80000000) ? "(+1)" : ""); |
| } |
| if (mask & ENCODE_LITERAL) { |
| strcat(buf, "lit "); |
| } |
| |
| if (mask & ENCODE_HEAP_REF) { |
| strcat(buf, "heap "); |
| } |
| if (mask & ENCODE_MUST_NOT_ALIAS) { |
| strcat(buf, "noalias "); |
| } |
| } |
| if (buf[0]) { |
| LOG(INFO) << prefix << ": " << buf; |
| } |
| } |
| |
| /* |
| * Debugging macros |
| */ |
| #define DUMP_RESOURCE_MASK(X) |
| #define DUMP_SSA_REP(X) |
| |
| /* Pretty-print a LIR instruction */ |
| void oatDumpLIRInsn(CompilationUnit* cUnit, LIR* arg, unsigned char* baseAddr) |
| { |
| ArmLIR* lir = (ArmLIR*) arg; |
| int offset = lir->generic.offset; |
| int dest = lir->operands[0]; |
| const bool dumpNop = false; |
| |
| /* Handle pseudo-ops individually, and all regular insns as a group */ |
| switch(lir->opcode) { |
| case kArmPseudoMethodEntry: |
| LOG(INFO) << "-------- method entry " << |
| art::PrettyMethod(cUnit->method_idx, *cUnit->dex_file); |
| break; |
| case kArmPseudoMethodExit: |
| LOG(INFO) << "-------- Method_Exit"; |
| break; |
| case kArmPseudoBarrier: |
| LOG(INFO) << "-------- BARRIER"; |
| break; |
| case kArmPseudoExtended: |
| LOG(INFO) << "-------- " << (char* ) dest; |
| break; |
| case kArmPseudoSSARep: |
| DUMP_SSA_REP(LOG(INFO) << "-------- kMirOpPhi: " << (char* ) dest); |
| break; |
| case kArmPseudoEntryBlock: |
| LOG(INFO) << "-------- entry offset: 0x" << std::hex << dest; |
| break; |
| case kArmPseudoDalvikByteCodeBoundary: |
| LOG(INFO) << "-------- dalvik offset: 0x" << std::hex << |
| lir->generic.dalvikOffset << " @ " << (char* )lir->operands[0]; |
| break; |
| case kArmPseudoExitBlock: |
| LOG(INFO) << "-------- exit offset: 0x" << std::hex << dest; |
| break; |
| case kArmPseudoPseudoAlign4: |
| LOG(INFO) << (intptr_t)baseAddr + offset << " (0x" << std::hex << |
| offset << "): .align4"; |
| break; |
| case kArmPseudoEHBlockLabel: |
| LOG(INFO) << "Exception_Handling:"; |
| break; |
| case kArmPseudoTargetLabel: |
| case kArmPseudoNormalBlockLabel: |
| LOG(INFO) << "L" << (intptr_t)lir << ":"; |
| break; |
| case kArmPseudoThrowTarget: |
| LOG(INFO) << "LT" << (intptr_t)lir << ":"; |
| break; |
| case kArmPseudoSuspendTarget: |
| LOG(INFO) << "LS" << (intptr_t)lir << ":"; |
| break; |
| case kArmPseudoCaseLabel: |
| LOG(INFO) << "LC" << (intptr_t)lir << ": Case target 0x" << |
| std::hex << lir->operands[0] << "|" << std::dec << |
| lir->operands[0]; |
| break; |
| default: |
| if (lir->flags.isNop && !dumpNop) { |
| break; |
| } else { |
| std::string op_name(buildInsnString(EncodingMap[lir->opcode].name, lir, baseAddr)); |
| std::string op_operands(buildInsnString(EncodingMap[lir->opcode].fmt, lir, baseAddr)); |
| LOG(INFO) << StringPrintf("%p (%04x): %-9s%s%s%s", baseAddr + offset, offset, |
| op_name.c_str(), op_operands.c_str(), lir->flags.isNop ? "(nop)" : "", |
| lir->flags.squashed ? "(squashed)" : ""); |
| } |
| break; |
| } |
| |
| if (lir->useMask && (!lir->flags.isNop || dumpNop)) { |
| DUMP_RESOURCE_MASK(oatDumpResourceMask((LIR* ) lir, |
| lir->useMask, "use")); |
| } |
| if (lir->defMask && (!lir->flags.isNop || dumpNop)) { |
| DUMP_RESOURCE_MASK(oatDumpResourceMask((LIR* ) lir, |
| lir->defMask, "def")); |
| } |
| } |
| |
| void oatDumpPromotionMap(CompilationUnit *cUnit) |
| { |
| for (int i = 0; i < cUnit->numDalvikRegisters; i++) { |
| PromotionMap vRegMap = cUnit->promotionMap[i]; |
| char buf[100]; |
| if (vRegMap.fpLocation == kLocPhysReg) { |
| snprintf(buf, 100, " : s%d", vRegMap.fpReg & FP_REG_MASK); |
| } else { |
| buf[0] = 0; |
| } |
| char buf2[100]; |
| snprintf(buf2, 100, "V[%02d] -> %s%d%s", i, |
| vRegMap.coreLocation == kLocPhysReg ? |
| "r" : "SP+", vRegMap.coreLocation == kLocPhysReg ? |
| vRegMap.coreReg : oatSRegOffset(cUnit, i), buf); |
| LOG(INFO) << buf2; |
| } |
| } |
| |
| void oatDumpFullPromotionMap(CompilationUnit *cUnit) |
| { |
| for (int i = 0; i < cUnit->numDalvikRegisters; i++) { |
| PromotionMap vRegMap = cUnit->promotionMap[i]; |
| LOG(INFO) << i << " -> " << "CL:" << (int)vRegMap.coreLocation << |
| ", CR:" << (int)vRegMap.coreReg << ", FL:" << |
| (int)vRegMap.fpLocation << ", FR:" << (int)vRegMap.fpReg << |
| ", - " << (int)vRegMap.firstInPair; |
| } |
| } |
| |
| /* Dump instructions and constant pool contents */ |
| void oatCodegenDump(CompilationUnit* cUnit) |
| { |
| LOG(INFO) << "/*"; |
| LOG(INFO) << "Dumping LIR insns for " |
| << art::PrettyMethod(cUnit->method_idx, *cUnit->dex_file); |
| LIR* lirInsn; |
| ArmLIR* armLIR; |
| int insnsSize = cUnit->insnsSize; |
| |
| LOG(INFO) << "Regs (excluding ins) : " << cUnit->numRegs; |
| LOG(INFO) << "Ins : " << cUnit->numIns; |
| LOG(INFO) << "Outs : " << cUnit->numOuts; |
| LOG(INFO) << "CoreSpills : " << cUnit->numCoreSpills; |
| LOG(INFO) << "FPSpills : " << cUnit->numFPSpills; |
| LOG(INFO) << "Padding : " << cUnit->numPadding; |
| LOG(INFO) << "Frame size : " << cUnit->frameSize; |
| LOG(INFO) << "Start of ins : " << cUnit->insOffset; |
| LOG(INFO) << "Start of regs : " << cUnit->regsOffset; |
| LOG(INFO) << "code size is " << cUnit->totalSize << |
| " bytes, Dalvik size is " << insnsSize * 2; |
| LOG(INFO) << "expansion factor: " << |
| (float)cUnit->totalSize / (float)(insnsSize * 2); |
| oatDumpPromotionMap(cUnit); |
| for (lirInsn = cUnit->firstLIRInsn; lirInsn; lirInsn = lirInsn->next) { |
| oatDumpLIRInsn(cUnit, lirInsn, 0); |
| } |
| for (lirInsn = cUnit->classPointerList; lirInsn; lirInsn = lirInsn->next) { |
| armLIR = (ArmLIR*) lirInsn; |
| LOG(INFO) << StringPrintf("%x (%04x): .class (%s)", |
| armLIR->generic.offset, armLIR->generic.offset, |
| ((CallsiteInfo *) armLIR->operands[0])->classDescriptor); |
| } |
| for (lirInsn = cUnit->literalList; lirInsn; lirInsn = lirInsn->next) { |
| armLIR = (ArmLIR*) lirInsn; |
| LOG(INFO) << StringPrintf("%x (%04x): .word (%#x)", |
| armLIR->generic.offset, armLIR->generic.offset, armLIR->operands[0]); |
| } |
| |
| const art::DexFile::MethodId& method_id = |
| cUnit->dex_file->GetMethodId(cUnit->method_idx); |
| std::string signature(cUnit->dex_file->GetMethodSignature(method_id)); |
| std::string name(cUnit->dex_file->GetMethodName(method_id)); |
| std::string descriptor(cUnit->dex_file->GetMethodDeclaringClassDescriptor(method_id)); |
| |
| // Dump mapping table |
| if (cUnit->mappingTable.size() > 0) { |
| std::string line(StringPrintf("\n MappingTable %s%s_%s_mappingTable[%d] = {", |
| descriptor.c_str(), name.c_str(), signature.c_str(), cUnit->mappingTable.size())); |
| std::replace(line.begin(), line.end(), ';', '_'); |
| LOG(INFO) << line; |
| for (uint32_t i = 0; i < cUnit->mappingTable.size(); i+=2) { |
| line = StringPrintf(" {0x%08x, 0x%04x},", |
| cUnit->mappingTable[i], cUnit->mappingTable[i+1]); |
| LOG(INFO) << line; |
| } |
| LOG(INFO) <<" };\n\n"; |
| } |
| } |
