Oat compiler integration snapshot.
Cleanly compiles, but not integrated. Old-world dependencies captured
in hacked-up temporary files "Dalvik.h" and "HackStubs.cc".
Dalvik.h is a placeholder that captures all of the constants, struct
definitions and inline functions the compiler needs. It largely consists
of declaration fragments of libdex, Object.h, DvmDex.h and Thread.h.
HackStubs.cc contains empty shells for some required libdex routines.
Change-Id: Ia479dda41da4e3162ff6df383252fdc7dbf38d71
diff --git a/src/compiler/codegen/CodegenFactory.cc b/src/compiler/codegen/CodegenFactory.cc
new file mode 100644
index 0000000..dd63621
--- /dev/null
+++ b/src/compiler/codegen/CodegenFactory.cc
@@ -0,0 +1,234 @@
+/*
+ * 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.
+ */
+
+/*
+ * This file contains target-independent codegen and support, and is
+ * included by:
+ *
+ * $(TARGET_ARCH)/Codegen-$(TARGET_ARCH_VARIANT).c
+ *
+ * which combines this common code with specific support found in the
+ * applicable directories below this one.
+ *
+ * Prior to including this file, TGT_LIR should be #defined.
+ * For example, for arm:
+ * #define TGT_LIR ArmLIR
+ * and for x86:
+ * #define TGT_LIR X86LIR
+ */
+
+
+/* Load a word at base + displacement. Displacement must be word multiple */
+static TGT_LIR* loadWordDisp(CompilationUnit* cUnit, int rBase,
+ int displacement, int rDest)
+{
+ return loadBaseDisp(cUnit, NULL, rBase, displacement, rDest, kWord,
+ INVALID_SREG);
+}
+
+static TGT_LIR* storeWordDisp(CompilationUnit* cUnit, int rBase,
+ int displacement, int rSrc)
+{
+ return storeBaseDisp(cUnit, rBase, displacement, rSrc, kWord);
+}
+
+/*
+ * Load a Dalvik register into a physical register. Take care when
+ * using this routine, as it doesn't perform any bookkeeping regarding
+ * register liveness. That is the responsibility of the caller.
+ */
+static void loadValueDirect(CompilationUnit* cUnit, RegLocation rlSrc,
+ int reg1)
+{
+ rlSrc = oatUpdateLoc(cUnit, rlSrc);
+ if (rlSrc.location == kLocPhysReg) {
+ genRegCopy(cUnit, reg1, rlSrc.lowReg);
+ } else {
+ assert(rlSrc.location == kLocDalvikFrame);
+ loadWordDisp(cUnit, rSP, rlSrc.spOffset, reg1);
+ }
+}
+
+/*
+ * Similar to loadValueDirect, but clobbers and allocates the target
+ * register. Should be used when loading to a fixed register (for example,
+ * loading arguments to an out of line call.
+ */
+static void loadValueDirectFixed(CompilationUnit* cUnit, RegLocation rlSrc,
+ int reg1)
+{
+ oatClobber(cUnit, reg1);
+ oatMarkInUse(cUnit, reg1);
+ loadValueDirect(cUnit, rlSrc, reg1);
+}
+
+/*
+ * Load a Dalvik register pair into a physical register[s]. Take care when
+ * using this routine, as it doesn't perform any bookkeeping regarding
+ * register liveness. That is the responsibility of the caller.
+ */
+static void loadValueDirectWide(CompilationUnit* cUnit, RegLocation rlSrc,
+ int regLo, int regHi)
+{
+ rlSrc = oatUpdateLocWide(cUnit, rlSrc);
+ if (rlSrc.location == kLocPhysReg) {
+ genRegCopyWide(cUnit, regLo, regHi, rlSrc.lowReg, rlSrc.highReg);
+ } else {
+ assert(rlSrc.location == kLocDalvikFrame);
+ loadBaseDispWide(cUnit, NULL, rSP, rlSrc.spOffset,
+ regLo, regHi, INVALID_SREG);
+ }
+}
+
+/*
+ * Similar to loadValueDirect, but clobbers and allocates the target
+ * registers. Should be used when loading to a fixed registers (for example,
+ * loading arguments to an out of line call.
+ */
+static void loadValueDirectWideFixed(CompilationUnit* cUnit, RegLocation rlSrc,
+ int regLo, int regHi)
+{
+ oatClobber(cUnit, regLo);
+ oatClobber(cUnit, regHi);
+ oatMarkInUse(cUnit, regLo);
+ oatMarkInUse(cUnit, regHi);
+ loadValueDirectWide(cUnit, rlSrc, regLo, regHi);
+}
+
+static RegLocation loadValue(CompilationUnit* cUnit, RegLocation rlSrc,
+ RegisterClass opKind)
+{
+ rlSrc = oatEvalLoc(cUnit, rlSrc, opKind, false);
+ if (rlSrc.location == kLocDalvikFrame) {
+ loadValueDirect(cUnit, rlSrc, rlSrc.lowReg);
+ rlSrc.location = kLocPhysReg;
+ oatMarkLive(cUnit, rlSrc.lowReg, rlSrc.sRegLow);
+ }
+ return rlSrc;
+}
+
+static void storeValue(CompilationUnit* cUnit, RegLocation rlDest,
+ RegLocation rlSrc)
+{
+ LIR* defStart;
+ LIR* defEnd;
+ assert(!rlDest.wide);
+ assert(!rlSrc.wide);
+ oatKillNullCheckedLoc(cUnit, rlDest);
+ rlSrc = oatUpdateLoc(cUnit, rlSrc);
+ rlDest = oatUpdateLoc(cUnit, rlDest);
+ if (rlSrc.location == kLocPhysReg) {
+ if (oatIsLive(cUnit, rlSrc.lowReg) ||
+ (rlDest.location == kLocPhysReg)) {
+ // Src is live or Dest has assigned reg.
+ rlDest = oatEvalLoc(cUnit, rlDest, kAnyReg, false);
+ genRegCopy(cUnit, rlDest.lowReg, rlSrc.lowReg);
+ } else {
+ // Just re-assign the registers. Dest gets Src's regs
+ rlDest.lowReg = rlSrc.lowReg;
+ oatClobber(cUnit, rlSrc.lowReg);
+ }
+ } else {
+ // Load Src either into promoted Dest or temps allocated for Dest
+ rlDest = oatEvalLoc(cUnit, rlDest, kAnyReg, false);
+ loadValueDirect(cUnit, rlSrc, rlDest.lowReg);
+ }
+
+ // Dest is now live and dirty (until/if we flush it to home location)
+ oatMarkLive(cUnit, rlDest.lowReg, rlDest.sRegLow);
+ oatMarkDirty(cUnit, rlDest);
+
+
+ oatResetDefLoc(cUnit, rlDest);
+ if (oatIsDirty(cUnit, rlDest.lowReg) &&
+ oatLiveOut(cUnit, rlDest.sRegLow)) {
+ defStart = (LIR* )cUnit->lastLIRInsn;
+ storeBaseDisp(cUnit, rSP, rlDest.spOffset, rlDest.lowReg, kWord);
+ oatMarkClean(cUnit, rlDest);
+ defEnd = (LIR* )cUnit->lastLIRInsn;
+ oatMarkDef(cUnit, rlDest, defStart, defEnd);
+ }
+}
+
+static RegLocation loadValueWide(CompilationUnit* cUnit, RegLocation rlSrc,
+ RegisterClass opKind)
+{
+ assert(rlSrc.wide);
+ rlSrc = oatEvalLoc(cUnit, rlSrc, opKind, false);
+ if (rlSrc.location == kLocDalvikFrame) {
+ loadValueDirectWide(cUnit, rlSrc, rlSrc.lowReg, rlSrc.highReg);
+ rlSrc.location = kLocPhysReg;
+ oatMarkLive(cUnit, rlSrc.lowReg, rlSrc.sRegLow);
+ oatMarkLive(cUnit, rlSrc.highReg,
+ oatSRegHi(rlSrc.sRegLow));
+ }
+ return rlSrc;
+}
+
+static void storeValueWide(CompilationUnit* cUnit, RegLocation rlDest,
+ RegLocation rlSrc)
+{
+ LIR* defStart;
+ LIR* defEnd;
+ assert(FPREG(rlSrc.lowReg)==FPREG(rlSrc.highReg));
+ assert(rlDest.wide);
+ assert(rlSrc.wide);
+ oatKillNullCheckedLoc(cUnit, rlDest);
+ if (rlSrc.location == kLocPhysReg) {
+ if (oatIsLive(cUnit, rlSrc.lowReg) ||
+ oatIsLive(cUnit, rlSrc.highReg) ||
+ (rlDest.location == kLocPhysReg)) {
+ // Src is live or Dest has assigned reg.
+ rlDest = oatEvalLoc(cUnit, rlDest, kAnyReg, false);
+ genRegCopyWide(cUnit, rlDest.lowReg, rlDest.highReg,
+ rlSrc.lowReg, rlSrc.highReg);
+ } else {
+ // Just re-assign the registers. Dest gets Src's regs
+ rlDest.lowReg = rlSrc.lowReg;
+ rlDest.highReg = rlSrc.highReg;
+ oatClobber(cUnit, rlSrc.lowReg);
+ oatClobber(cUnit, rlSrc.highReg);
+ }
+ } else {
+ // Load Src either into promoted Dest or temps allocated for Dest
+ rlDest = oatEvalLoc(cUnit, rlDest, kAnyReg, false);
+ loadValueDirectWide(cUnit, rlSrc, rlDest.lowReg,
+ rlDest.highReg);
+ }
+
+ // Dest is now live and dirty (until/if we flush it to home location)
+ oatMarkLive(cUnit, rlDest.lowReg, rlDest.sRegLow);
+ oatMarkLive(cUnit, rlDest.highReg,
+ oatSRegHi(rlDest.sRegLow));
+ oatMarkDirty(cUnit, rlDest);
+ oatMarkPair(cUnit, rlDest.lowReg, rlDest.highReg);
+
+
+ oatResetDefLocWide(cUnit, rlDest);
+ if ((oatIsDirty(cUnit, rlDest.lowReg) ||
+ oatIsDirty(cUnit, rlDest.highReg)) &&
+ (oatLiveOut(cUnit, rlDest.sRegLow) ||
+ oatLiveOut(cUnit, oatSRegHi(rlDest.sRegLow)))) {
+ defStart = (LIR*)cUnit->lastLIRInsn;
+ assert((oatS2VReg(cUnit, rlDest.sRegLow)+1) ==
+ oatS2VReg(cUnit, oatSRegHi(rlDest.sRegLow)));
+ storeBaseDispWide(cUnit, rSP, rlDest.spOffset,
+ rlDest.lowReg, rlDest.highReg);
+ oatMarkClean(cUnit, rlDest);
+ defEnd = (LIR*)cUnit->lastLIRInsn;
+ oatMarkDefWide(cUnit, rlDest, defStart, defEnd);
+ }
+}