--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/sparc/vm/c1_CodeStubs_sparc.cpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,407 @@
+/*
+ * Copyright 1999-2007 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+#include "incls/_precompiled.incl"
+#include "incls/_c1_CodeStubs_sparc.cpp.incl"
+
+#define __ ce->masm()->
+
+RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index,
+                               bool throw_index_out_of_bounds_exception)
+  : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception)
+  , _index(index)
+{
+  _info = new CodeEmitInfo(info);
+}
+
+
+void RangeCheckStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+
+  if (_index->is_register()) {
+    __ mov(_index->as_register(), G4);
+  } else {
+    __ set(_index->as_jint(), G4);
+  }
+  if (_throw_index_out_of_bounds_exception) {
+    __ call(Runtime1::entry_for(Runtime1::throw_index_exception_id), relocInfo::runtime_call_type);
+  } else {
+    __ call(Runtime1::entry_for(Runtime1::throw_range_check_failed_id), relocInfo::runtime_call_type);
+  }
+  __ delayed()->nop();
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+#ifdef ASSERT
+  __ should_not_reach_here();
+#endif
+}
+
+#ifdef TIERED
+
+void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  __ set(_bci, G4);
+  __ call(Runtime1::entry_for(Runtime1::counter_overflow_id), relocInfo::runtime_call_type);
+  __ delayed()->nop();
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+
+  __ br(Assembler::always, true, Assembler::pt, _continuation);
+  __ delayed()->nop();
+}
+
+#endif // TIERED
+
+void DivByZeroStub::emit_code(LIR_Assembler* ce) {
+  if (_offset != -1) {
+    ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
+  }
+  __ bind(_entry);
+  __ call(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type);
+  __ delayed()->nop();
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+#ifdef ASSERT
+  __ should_not_reach_here();
+#endif
+}
+
+
+void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
+  ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
+  __ bind(_entry);
+  __ call(Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id),
+          relocInfo::runtime_call_type);
+  __ delayed()->nop();
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+#ifdef ASSERT
+  __ should_not_reach_here();
+#endif
+}
+
+
+// Implementation of SimpleExceptionStub
+// Note: %g1 and %g3 are already in use
+void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  __ call(Runtime1::entry_for(_stub), relocInfo::runtime_call_type);
+
+  if (_obj->is_valid()) {
+    __ delayed()->mov(_obj->as_register(), G4); // _obj contains the optional argument to the stub
+  } else {
+    __ delayed()->mov(G0, G4);
+  }
+  ce->add_call_info_here(_info);
+#ifdef ASSERT
+  __ should_not_reach_here();
+#endif
+}
+
+
+// Implementation of ArrayStoreExceptionStub
+
+ArrayStoreExceptionStub::ArrayStoreExceptionStub(CodeEmitInfo* info):
+  _info(info) {
+}
+
+
+void ArrayStoreExceptionStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  __ call(Runtime1::entry_for(Runtime1::throw_array_store_exception_id), relocInfo::runtime_call_type);
+  __ delayed()->nop();
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+#ifdef ASSERT
+  __ should_not_reach_here();
+#endif
+}
+
+
+
+
+// Implementation of NewInstanceStub
+
+NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
+  _result = result;
+  _klass = klass;
+  _klass_reg = klass_reg;
+  _info = new CodeEmitInfo(info);
+  assert(stub_id == Runtime1::new_instance_id                 ||
+         stub_id == Runtime1::fast_new_instance_id            ||
+         stub_id == Runtime1::fast_new_instance_init_check_id,
+         "need new_instance id");
+  _stub_id   = stub_id;
+}
+
+
+void NewInstanceStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  __ call(Runtime1::entry_for(_stub_id), relocInfo::runtime_call_type);
+  __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  __ br(Assembler::always, false, Assembler::pt, _continuation);
+  __ delayed()->mov_or_nop(O0, _result->as_register());
+}
+
+
+// Implementation of NewTypeArrayStub
+NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
+  _klass_reg = klass_reg;
+  _length = length;
+  _result = result;
+  _info = new CodeEmitInfo(info);
+}
+
+
+void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+
+  __ mov(_length->as_register(), G4);
+  __ call(Runtime1::entry_for(Runtime1::new_type_array_id), relocInfo::runtime_call_type);
+  __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  __ br(Assembler::always, false, Assembler::pt, _continuation);
+  __ delayed()->mov_or_nop(O0, _result->as_register());
+}
+
+
+// Implementation of NewObjectArrayStub
+
+NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
+  _klass_reg = klass_reg;
+  _length = length;
+  _result = result;
+  _info = new CodeEmitInfo(info);
+}
+
+
+void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+
+  __ mov(_length->as_register(), G4);
+  __ call(Runtime1::entry_for(Runtime1::new_object_array_id), relocInfo::runtime_call_type);
+  __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  __ br(Assembler::always, false, Assembler::pt, _continuation);
+  __ delayed()->mov_or_nop(O0, _result->as_register());
+}
+
+
+// Implementation of MonitorAccessStubs
+MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)
+  : MonitorAccessStub(obj_reg, lock_reg) {
+  _info = new CodeEmitInfo(info);
+}
+
+
+void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  __ mov(_obj_reg->as_register(), G4);
+  if (ce->compilation()->has_fpu_code()) {
+    __ call(Runtime1::entry_for(Runtime1::monitorenter_id), relocInfo::runtime_call_type);
+  } else {
+    __ call(Runtime1::entry_for(Runtime1::monitorenter_nofpu_id), relocInfo::runtime_call_type);
+  }
+  __ delayed()->mov_or_nop(_lock_reg->as_register(), G5);
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  __ br(Assembler::always, true, Assembler::pt, _continuation);
+  __ delayed()->nop();
+}
+
+
+void MonitorExitStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  if (_compute_lock) {
+    ce->monitor_address(_monitor_ix, _lock_reg);
+  }
+  if (ce->compilation()->has_fpu_code()) {
+    __ call(Runtime1::entry_for(Runtime1::monitorexit_id), relocInfo::runtime_call_type);
+  } else {
+    __ call(Runtime1::entry_for(Runtime1::monitorexit_nofpu_id), relocInfo::runtime_call_type);
+  }
+
+  __ delayed()->mov_or_nop(_lock_reg->as_register(), G4);
+  __ br(Assembler::always, true, Assembler::pt, _continuation);
+  __ delayed()->nop();
+}
+
+// Implementation of patching:
+// - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
+// - Replace original code with a call to the stub
+// At Runtime:
+// - call to stub, jump to runtime
+// - in runtime: preserve all registers (especially objects, i.e., source and destination object)
+// - in runtime: after initializing class, restore original code, reexecute instruction
+
+int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
+
+void PatchingStub::align_patch_site(MacroAssembler* ) {
+  // patch sites on sparc are always properly aligned.
+}
+
+void PatchingStub::emit_code(LIR_Assembler* ce) {
+  // copy original code here
+  assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF,
+         "not enough room for call");
+  assert((_bytes_to_copy & 0x3) == 0, "must copy a multiple of four bytes");
+
+  Label call_patch;
+
+  int being_initialized_entry = __ offset();
+
+  if (_id == load_klass_id) {
+    // produce a copy of the load klass instruction for use by the being initialized case
+    address start = __ pc();
+    Address addr = Address(_obj, address(NULL), oop_Relocation::spec(_oop_index));
+    __ sethi(addr, true);
+    __ add(addr, _obj, 0);
+
+#ifdef ASSERT
+    for (int i = 0; i < _bytes_to_copy; i++) {
+      address ptr = (address)(_pc_start + i);
+      int a_byte = (*ptr) & 0xFF;
+      assert(a_byte == *start++, "should be the same code");
+    }
+#endif
+  } else {
+    // make a copy the code which is going to be patched.
+    for (int i = 0; i < _bytes_to_copy; i++) {
+      address ptr = (address)(_pc_start + i);
+      int a_byte = (*ptr) & 0xFF;
+      __ a_byte (a_byte);
+    }
+  }
+
+  address end_of_patch = __ pc();
+  int bytes_to_skip = 0;
+  if (_id == load_klass_id) {
+    int offset = __ offset();
+    if (CommentedAssembly) {
+      __ block_comment(" being_initialized check");
+    }
+
+    // static field accesses have special semantics while the class
+    // initializer is being run so we emit a test which can be used to
+    // check that this code is being executed by the initializing
+    // thread.
+    assert(_obj != noreg, "must be a valid register");
+    assert(_oop_index >= 0, "must have oop index");
+    __ ld_ptr(_obj, instanceKlass::init_thread_offset_in_bytes() + sizeof(klassOopDesc), G3);
+    __ cmp(G2_thread, G3);
+    __ br(Assembler::notEqual, false, Assembler::pn, call_patch);
+    __ delayed()->nop();
+
+    // load_klass patches may execute the patched code before it's
+    // copied back into place so we need to jump back into the main
+    // code of the nmethod to continue execution.
+    __ br(Assembler::always, false, Assembler::pt, _patch_site_continuation);
+    __ delayed()->nop();
+
+    // make sure this extra code gets skipped
+    bytes_to_skip += __ offset() - offset;
+  }
+
+  // Now emit the patch record telling the runtime how to find the
+  // pieces of the patch.  We only need 3 bytes but it has to be
+  // aligned as an instruction so emit 4 bytes.
+  int sizeof_patch_record = 4;
+  bytes_to_skip += sizeof_patch_record;
+
+  // emit the offsets needed to find the code to patch
+  int being_initialized_entry_offset = __ offset() - being_initialized_entry + sizeof_patch_record;
+
+  // Emit the patch record.  We need to emit a full word, so emit an extra empty byte
+  __ a_byte(0);
+  __ a_byte(being_initialized_entry_offset);
+  __ a_byte(bytes_to_skip);
+  __ a_byte(_bytes_to_copy);
+  address patch_info_pc = __ pc();
+  assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info");
+
+  address entry = __ pc();
+  NativeGeneralJump::insert_unconditional((address)_pc_start, entry);
+  address target = NULL;
+  switch (_id) {
+    case access_field_id:  target = Runtime1::entry_for(Runtime1::access_field_patching_id); break;
+    case load_klass_id:    target = Runtime1::entry_for(Runtime1::load_klass_patching_id); break;
+    default: ShouldNotReachHere();
+  }
+  __ bind(call_patch);
+
+  if (CommentedAssembly) {
+    __ block_comment("patch entry point");
+  }
+  __ call(target, relocInfo::runtime_call_type);
+  __ delayed()->nop();
+  assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change");
+  ce->add_call_info_here(_info);
+  __ br(Assembler::always, false, Assembler::pt, _patch_site_entry);
+  __ delayed()->nop();
+  if (_id == load_klass_id) {
+    CodeSection* cs = __ code_section();
+    address pc = (address)_pc_start;
+    RelocIterator iter(cs, pc, pc + 1);
+    relocInfo::change_reloc_info_for_address(&iter, (address) pc, relocInfo::oop_type, relocInfo::none);
+
+    pc = (address)(_pc_start + NativeMovConstReg::add_offset);
+    RelocIterator iter2(cs, pc, pc+1);
+    relocInfo::change_reloc_info_for_address(&iter2, (address) pc, relocInfo::oop_type, relocInfo::none);
+  }
+
+}
+
+void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
+  //---------------slow case: call to native-----------------
+  __ bind(_entry);
+  __ mov(src()->as_register(),     O0);
+  __ mov(src_pos()->as_register(), O1);
+  __ mov(dst()->as_register(),     O2);
+  __ mov(dst_pos()->as_register(), O3);
+  __ mov(length()->as_register(),  O4);
+
+  ce->emit_static_call_stub();
+
+  __ call(SharedRuntime::get_resolve_static_call_stub(), relocInfo::static_call_type);
+  __ delayed()->nop();
+  ce->add_call_info_here(info());
+  ce->verify_oop_map(info());
+
+#ifndef PRODUCT
+  __ set((intptr_t)&Runtime1::_arraycopy_slowcase_cnt, O0);
+  __ ld(O0, 0, O1);
+  __ inc(O1);
+  __ st(O1, 0, O0);
+#endif
+
+  __ br(Assembler::always, false, Assembler::pt, _continuation);
+  __ delayed()->nop();
+}
+
+
+#undef __