8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/hotspot/share/c1/c1_FrameMap.cpp

@@ -0,0 +1,330 @@
+/*
+ * Copyright (c) 2000, 2016, 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.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "c1/c1_FrameMap.hpp"
+#include "c1/c1_LIR.hpp"
+#include "code/vmreg.inline.hpp"
+#include "runtime/sharedRuntime.hpp"
+#include "utilities/align.hpp"
+
+//-----------------------------------------------------
+
+// Convert method signature into an array of BasicTypes for the arguments
+BasicTypeArray* FrameMap::signature_type_array_for(const ciMethod* method) {
+  ciSignature* sig = method->signature();
+  BasicTypeList* sta = new BasicTypeList(method->arg_size());
+  // add receiver, if any
+  if (!method->is_static()) sta->append(T_OBJECT);
+  // add remaining arguments
+  for (int i = 0; i < sig->count(); i++) {
+    ciType* type = sig->type_at(i);
+    BasicType t = type->basic_type();
+    if (t == T_ARRAY) {
+      t = T_OBJECT;
+    }
+    sta->append(t);
+  }
+  // done
+  return sta;
+}
+
+
+CallingConvention* FrameMap::java_calling_convention(const BasicTypeArray* signature, bool outgoing) {
+  // compute the size of the arguments first.  The signature array
+  // that java_calling_convention takes includes a T_VOID after double
+  // work items but our signatures do not.
+  int i;
+  int sizeargs = 0;
+  for (i = 0; i < signature->length(); i++) {
+    sizeargs += type2size[signature->at(i)];
+  }
+
+  BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs);
+  VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs);
+  int sig_index = 0;
+  for (i = 0; i < sizeargs; i++, sig_index++) {
+    sig_bt[i] = signature->at(sig_index);
+    if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) {
+      sig_bt[i + 1] = T_VOID;
+      i++;
+    }
+  }
+
+  intptr_t out_preserve = SharedRuntime::java_calling_convention(sig_bt, regs, sizeargs, outgoing);
+  LIR_OprList* args = new LIR_OprList(signature->length());
+  for (i = 0; i < sizeargs;) {
+    BasicType t = sig_bt[i];
+    assert(t != T_VOID, "should be skipping these");
+    LIR_Opr opr = map_to_opr(t, regs + i, outgoing);
+    args->append(opr);
+    if (opr->is_address()) {
+      LIR_Address* addr = opr->as_address_ptr();
+      assert(addr->disp() == (int)addr->disp(), "out of range value");
+      out_preserve = MAX2(out_preserve, (intptr_t)(addr->disp() - STACK_BIAS) / 4);
+    }
+    i += type2size[t];
+  }
+  assert(args->length() == signature->length(), "size mismatch");
+  out_preserve += SharedRuntime::out_preserve_stack_slots();
+
+  if (outgoing) {
+    // update the space reserved for arguments.
+    update_reserved_argument_area_size(out_preserve * BytesPerWord);
+  }
+  return new CallingConvention(args, out_preserve);
+}
+
+
+CallingConvention* FrameMap::c_calling_convention(const BasicTypeArray* signature) {
+  // compute the size of the arguments first.  The signature array
+  // that java_calling_convention takes includes a T_VOID after double
+  // work items but our signatures do not.
+  int i;
+  int sizeargs = 0;
+  for (i = 0; i < signature->length(); i++) {
+    sizeargs += type2size[signature->at(i)];
+  }
+
+  BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs);
+  VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs);
+  int sig_index = 0;
+  for (i = 0; i < sizeargs; i++, sig_index++) {
+    sig_bt[i] = signature->at(sig_index);
+    if (sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) {
+      sig_bt[i + 1] = T_VOID;
+      i++;
+    }
+  }
+
+  intptr_t out_preserve = SharedRuntime::c_calling_convention(sig_bt, regs, NULL, sizeargs);
+  LIR_OprList* args = new LIR_OprList(signature->length());
+  for (i = 0; i < sizeargs;) {
+    BasicType t = sig_bt[i];
+    assert(t != T_VOID, "should be skipping these");
+
+    // C calls are always outgoing
+    bool outgoing = true;
+    LIR_Opr opr = map_to_opr(t, regs + i, outgoing);
+    // they might be of different types if for instance floating point
+    // values are passed in cpu registers, but the sizes must match.
+    assert(type2size[opr->type()] == type2size[t], "type mismatch");
+    args->append(opr);
+    if (opr->is_address()) {
+      LIR_Address* addr = opr->as_address_ptr();
+      out_preserve = MAX2(out_preserve, (intptr_t)(addr->disp() - STACK_BIAS) / 4);
+    }
+    i += type2size[t];
+  }
+  assert(args->length() == signature->length(), "size mismatch");
+  out_preserve += SharedRuntime::out_preserve_stack_slots();
+  update_reserved_argument_area_size(out_preserve * BytesPerWord);
+  return new CallingConvention(args, out_preserve);
+}
+
+
+//--------------------------------------------------------
+//               FrameMap
+//--------------------------------------------------------
+
+bool      FrameMap::_init_done = false;
+Register  FrameMap::_cpu_rnr2reg [FrameMap::nof_cpu_regs];
+int       FrameMap::_cpu_reg2rnr [FrameMap::nof_cpu_regs];
+
+
+FrameMap::FrameMap(ciMethod* method, int monitors, int reserved_argument_area_size) {
+  assert(_init_done, "should already be completed");
+
+  _framesize = -1;
+  _num_spills = -1;
+
+  assert(monitors >= 0, "not set");
+  _num_monitors = monitors;
+  assert(reserved_argument_area_size >= 0, "not set");
+  _reserved_argument_area_size = MAX2(4, reserved_argument_area_size) * BytesPerWord;
+
+  _argcount = method->arg_size();
+  _argument_locations = new intArray(_argcount, _argcount, -1);
+  _incoming_arguments = java_calling_convention(signature_type_array_for(method), false);
+  _oop_map_arg_count = _incoming_arguments->reserved_stack_slots();
+
+  int java_index = 0;
+  for (int i = 0; i < _incoming_arguments->length(); i++) {
+    LIR_Opr opr = _incoming_arguments->at(i);
+    if (opr->is_address()) {
+      LIR_Address* address = opr->as_address_ptr();
+      _argument_locations->at_put(java_index, address->disp() - STACK_BIAS);
+      _incoming_arguments->args()->at_put(i, LIR_OprFact::stack(java_index, as_BasicType(as_ValueType(address->type()))));
+    }
+    java_index += type2size[opr->type()];
+  }
+
+}
+
+
+bool FrameMap::finalize_frame(int nof_slots) {
+  assert(nof_slots >= 0, "must be positive");
+  assert(_num_spills == -1, "can only be set once");
+  _num_spills = nof_slots;
+  assert(_framesize == -1, "should only be calculated once");
+  _framesize =  align_up(in_bytes(sp_offset_for_monitor_base(0)) +
+                         _num_monitors * (int)sizeof(BasicObjectLock) +
+                         (int)sizeof(intptr_t) +                        // offset of deopt orig pc
+                         frame_pad_in_bytes,
+                         StackAlignmentInBytes) / 4;
+  int java_index = 0;
+  for (int i = 0; i < _incoming_arguments->length(); i++) {
+    LIR_Opr opr = _incoming_arguments->at(i);
+    if (opr->is_stack()) {
+      _argument_locations->at_put(java_index, in_bytes(framesize_in_bytes()) +
+                                  _argument_locations->at(java_index));
+    }
+    java_index += type2size[opr->type()];
+  }
+  // make sure it's expressible on the platform
+  return validate_frame();
+}
+
+VMReg FrameMap::sp_offset2vmreg(ByteSize offset) const {
+  int offset_in_bytes = in_bytes(offset);
+  assert(offset_in_bytes % 4 == 0, "must be multiple of 4 bytes");
+  assert(offset_in_bytes / 4 < framesize() + oop_map_arg_count(), "out of range");
+  return VMRegImpl::stack2reg(offset_in_bytes / 4);
+}
+
+
+bool FrameMap::location_for_sp_offset(ByteSize byte_offset_from_sp,
+                                      Location::Type loc_type,
+                                      Location* loc) const {
+  int offset = in_bytes(byte_offset_from_sp);
+  assert(offset >= 0, "incorrect offset");
+  if (!Location::legal_offset_in_bytes(offset)) {
+    return false;
+  }
+  Location tmp_loc = Location::new_stk_loc(loc_type, offset);
+  *loc = tmp_loc;
+  return true;
+}
+
+
+bool FrameMap::locations_for_slot  (int index, Location::Type loc_type,
+                                     Location* loc, Location* second) const {
+  ByteSize offset_from_sp = sp_offset_for_slot(index);
+  if (!location_for_sp_offset(offset_from_sp, loc_type, loc)) {
+    return false;
+  }
+  if (second != NULL) {
+    // two word item
+    offset_from_sp = offset_from_sp + in_ByteSize(4);
+    return location_for_sp_offset(offset_from_sp, loc_type, second);
+  }
+  return true;
+}
+
+//////////////////////
+// Public accessors //
+//////////////////////
+
+
+ByteSize FrameMap::sp_offset_for_slot(const int index) const {
+  if (index < argcount()) {
+    int offset = _argument_locations->at(index);
+    assert(offset != -1, "not a memory argument");
+    assert(offset >= framesize() * 4, "argument inside of frame");
+    return in_ByteSize(offset);
+  }
+  ByteSize offset = sp_offset_for_spill(index - argcount());
+  assert(in_bytes(offset) < framesize() * 4, "spill outside of frame");
+  return offset;
+}
+
+
+ByteSize FrameMap::sp_offset_for_double_slot(const int index) const {
+  ByteSize offset = sp_offset_for_slot(index);
+  if (index >= argcount()) {
+    assert(in_bytes(offset) + 4 < framesize() * 4, "spill outside of frame");
+  }
+  return offset;
+}
+
+
+ByteSize FrameMap::sp_offset_for_spill(const int index) const {
+  assert(index >= 0 && index < _num_spills, "out of range");
+  int offset = align_up(first_available_sp_in_frame + _reserved_argument_area_size, (int)sizeof(double)) +
+    index * spill_slot_size_in_bytes;
+  return in_ByteSize(offset);
+}
+
+ByteSize FrameMap::sp_offset_for_monitor_base(const int index) const {
+  int end_of_spills = align_up(first_available_sp_in_frame + _reserved_argument_area_size, (int)sizeof(double)) +
+    _num_spills * spill_slot_size_in_bytes;
+  int offset = align_up(end_of_spills, HeapWordSize) + index * (int)sizeof(BasicObjectLock);
+  return in_ByteSize(offset);
+}
+
+ByteSize FrameMap::sp_offset_for_monitor_lock(int index) const {
+  check_monitor_index(index);
+  return sp_offset_for_monitor_base(index) + in_ByteSize(BasicObjectLock::lock_offset_in_bytes());;
+}
+
+ByteSize FrameMap::sp_offset_for_monitor_object(int index) const {
+  check_monitor_index(index);
+  return sp_offset_for_monitor_base(index) + in_ByteSize(BasicObjectLock::obj_offset_in_bytes());
+}
+
+
+// For OopMaps, map a local variable or spill index to an VMReg.
+// This is the offset from sp() in the frame of the slot for the index,
+// skewed by SharedInfo::stack0 to indicate a stack location (vs.a register.)
+//
+//         C ABI size +
+//         framesize +     framesize +
+//         stack0          stack0         stack0          0 <- VMReg->value()
+//            |              |              | <registers> |
+//  ..........|..............|..............|.............|
+//    0 1 2 3 | <C ABI area> | 4 5 6 ...... |               <- local indices
+//    ^                        ^          sp()
+//    |                        |
+//  arguments            non-argument locals
+
+
+VMReg FrameMap::regname(LIR_Opr opr) const {
+  if (opr->is_single_cpu()) {
+    assert(!opr->is_virtual(), "should not see virtual registers here");
+    return opr->as_register()->as_VMReg();
+  } else if (opr->is_single_stack()) {
+    return sp_offset2vmreg(sp_offset_for_slot(opr->single_stack_ix()));
+  } else if (opr->is_address()) {
+    LIR_Address* addr = opr->as_address_ptr();
+    assert(addr->base() == stack_pointer(), "sp based addressing only");
+    return sp_offset2vmreg(in_ByteSize(addr->index()->as_jint()));
+  }
+  ShouldNotReachHere();
+  return VMRegImpl::Bad();
+}
+
+
+
+
+// ------------ extra spill slots ---------------