hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.amd64/src/org/graalvm/compiler/lir/amd64/AMD64FrameMap.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.amd64/src/org/graalvm/compiler/lir/amd64/AMD64FrameMap.java Thu Feb 16 15:46:09 2017 -0800
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.graalvm.compiler.lir.amd64;
+
+import static jdk.vm.ci.code.ValueUtil.asStackSlot;
+
+import org.graalvm.compiler.asm.NumUtil;
+import org.graalvm.compiler.core.common.LIRKind;
+import org.graalvm.compiler.lir.framemap.FrameMap;
+
+import jdk.vm.ci.amd64.AMD64Kind;
+import jdk.vm.ci.code.CodeCacheProvider;
+import jdk.vm.ci.code.RegisterConfig;
+import jdk.vm.ci.code.StackSlot;
+
+/**
+ * AMD64 specific frame map.
+ *
+ * This is the format of an AMD64 stack frame:
+ *
+ * <pre>
+ * Base Contents
+ *
+ * : : -----
+ * caller | incoming overflow argument n | ^
+ * frame : ... : | positive
+ * | incoming overflow argument 0 | | offsets
+ * ---------+--------------------------------+---------------------
+ * | return address | | ^
+ * current +--------------------------------+ | | -----
+ * frame | | | | ^
+ * : callee save area : | | |
+ * | | | | |
+ * +--------------------------------+ | | |
+ * | spill slot 0 | | negative | |
+ * : ... : v offsets | |
+ * | spill slot n | ----- total frame
+ * +--------------------------------+ frame size
+ * | alignment padding | size |
+ * +--------------------------------+ ----- | |
+ * | outgoing overflow argument n | ^ | |
+ * : ... : | positive | |
+ * | outgoing overflow argument 0 | | offsets v v
+ * %sp--> +--------------------------------+---------------------------
+ *
+ * </pre>
+ *
+ * The spill slot area also includes stack allocated memory blocks (ALLOCA blocks). The size of such
+ * a block may be greater than the size of a normal spill slot or the word size.
+ * <p>
+ * A runtime can reserve space at the beginning of the overflow argument area. The calling
+ * convention can specify that the first overflow stack argument is not at offset 0, but at a
+ * specified offset. Use {@link CodeCacheProvider#getMinimumOutgoingSize()} to make sure that
+ * call-free methods also have this space reserved. Then the VM can use the memory at offset 0
+ * relative to the stack pointer.
+ */
+public class AMD64FrameMap extends FrameMap {
+
+ private StackSlot rbpSpillSlot;
+
+ public AMD64FrameMap(CodeCacheProvider codeCache, RegisterConfig registerConfig, ReferenceMapBuilderFactory referenceMapFactory) {
+ super(codeCache, registerConfig, referenceMapFactory);
+ // (negative) offset relative to sp + total frame size
+ initialSpillSize = returnAddressSize();
+ spillSize = initialSpillSize;
+ }
+
+ @Override
+ public int totalFrameSize() {
+ return frameSize() + returnAddressSize();
+ }
+
+ @Override
+ public int currentFrameSize() {
+ return alignFrameSize(outgoingSize + spillSize - returnAddressSize());
+ }
+
+ @Override
+ protected int alignFrameSize(int size) {
+ return NumUtil.roundUp(size + returnAddressSize(), getTarget().stackAlignment) - returnAddressSize();
+ }
+
+ @Override
+ public int offsetForStackSlot(StackSlot slot) {
+ // @formatter:off
+ assert (!slot.getRawAddFrameSize() && slot.getRawOffset() < outgoingSize) ||
+ (slot.getRawAddFrameSize() && slot.getRawOffset() < 0 && -slot.getRawOffset() <= spillSize) ||
+ (slot.getRawAddFrameSize() && slot.getRawOffset() >= 0) :
+ String.format("RawAddFrameSize: %b RawOffset: 0x%x spillSize: 0x%x outgoingSize: 0x%x", slot.getRawAddFrameSize(), slot.getRawOffset(), spillSize, outgoingSize);
+ // @formatter:on
+ return super.offsetForStackSlot(slot);
+ }
+
+ /**
+ * For non-leaf methods, RBP is preserved in the special stack slot required by the HotSpot
+ * runtime for walking/inspecting frames of such methods.
+ */
+ StackSlot allocateRBPSpillSlot() {
+ assert spillSize == initialSpillSize : "RBP spill slot must be the first allocated stack slots";
+ rbpSpillSlot = allocateSpillSlot(LIRKind.value(AMD64Kind.QWORD));
+ assert asStackSlot(rbpSpillSlot).getRawOffset() == -16 : asStackSlot(rbpSpillSlot).getRawOffset();
+ return rbpSpillSlot;
+ }
+
+ void freeRBPSpillSlot() {
+ int size = spillSlotSize(LIRKind.value(AMD64Kind.QWORD));
+ assert spillSize == NumUtil.roundUp(initialSpillSize + size, size) : "RBP spill slot can not be freed after allocation other stack slots";
+ spillSize = initialSpillSize;
+ }
+
+ public StackSlot allocateDeoptimizationRescueSlot() {
+ assert spillSize == initialSpillSize || spillSize == initialSpillSize +
+ spillSlotSize(LIRKind.value(AMD64Kind.QWORD)) : "Deoptimization rescue slot must be the first or second (if there is an RBP spill slot) stack slot";
+ return allocateSpillSlot(LIRKind.value(AMD64Kind.QWORD));
+ }
+}