author | mdoerr |
Thu, 15 Dec 2016 14:24:04 +0100 | |
changeset 42884 | 05815125c157 |
parent 42605 | c127902170ee |
child 46271 | 979ebd346ecf |
permissions | -rw-r--r-- |
33160 | 1 |
/* |
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* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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#include "jvmci/jvmciCodeInstaller.hpp" |
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#include "jvmci/jvmciRuntime.hpp" |
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#include "jvmci/jvmciCompilerToVM.hpp" |
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#include "jvmci/jvmciJavaClasses.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "runtime/sharedRuntime.hpp" |
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#include "vmreg_aarch64.inline.hpp" |
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jint CodeInstaller::pd_next_offset(NativeInstruction* inst, jint pc_offset, Handle method, TRAPS) { |
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if (inst->is_call() || inst->is_jump() || inst->is_blr()) { |
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return pc_offset + NativeCall::instruction_size; |
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} else if (inst->is_general_jump()) { |
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return pc_offset + NativeGeneralJump::instruction_size; |
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} else { |
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JVMCI_ERROR_0("unsupported type of instruction for call site"); |
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} |
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} |
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void CodeInstaller::pd_patch_OopConstant(int pc_offset, Handle constant, TRAPS) { |
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address pc = _instructions->start() + pc_offset; |
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#ifdef ASSERT |
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{ |
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NativeInstruction *insn = nativeInstruction_at(pc); |
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if (HotSpotObjectConstantImpl::compressed(constant)) { |
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// Mov narrow constant: movz n << 16, movk |
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assert(Instruction_aarch64::extract(insn->encoding(), 31, 21) == 0b11010010101 && |
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nativeInstruction_at(pc+4)->is_movk(), "wrong insn in patch"); |
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} else { |
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// Move wide constant: movz n, movk, movk. |
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assert(nativeInstruction_at(pc+4)->is_movk() |
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&& nativeInstruction_at(pc+8)->is_movk(), "wrong insn in patch"); |
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} |
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} |
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#endif // ASSERT |
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Handle obj = HotSpotObjectConstantImpl::object(constant); |
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jobject value = JNIHandles::make_local(obj()); |
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MacroAssembler::patch_oop(pc, (address)obj()); |
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int oop_index = _oop_recorder->find_index(value); |
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RelocationHolder rspec = oop_Relocation::spec(oop_index); |
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_instructions->relocate(pc, rspec); |
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} |
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void CodeInstaller::pd_patch_MetaspaceConstant(int pc_offset, Handle constant, TRAPS) { |
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address pc = _instructions->start() + pc_offset; |
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if (HotSpotMetaspaceConstantImpl::compressed(constant)) { |
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narrowKlass narrowOop = record_narrow_metadata_reference(_instructions, pc, constant, CHECK); |
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MacroAssembler::patch_narrow_klass(pc, narrowOop); |
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TRACE_jvmci_3("relocating (narrow metaspace constant) at " PTR_FORMAT "/0x%x", p2i(pc), narrowOop); |
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} else { |
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NativeMovConstReg* move = nativeMovConstReg_at(pc); |
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void* reference = record_metadata_reference(_instructions, pc, constant, CHECK); |
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move->set_data((intptr_t) reference); |
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TRACE_jvmci_3("relocating (metaspace constant) at " PTR_FORMAT "/" PTR_FORMAT, p2i(pc), p2i(reference)); |
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} |
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} |
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void CodeInstaller::pd_patch_DataSectionReference(int pc_offset, int data_offset, TRAPS) { |
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address pc = _instructions->start() + pc_offset; |
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NativeInstruction* inst = nativeInstruction_at(pc); |
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if (inst->is_adr_aligned() || inst->is_ldr_literal()) { |
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address dest = _constants->start() + data_offset; |
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_instructions->relocate(pc, section_word_Relocation::spec((address) dest, CodeBuffer::SECT_CONSTS)); |
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TRACE_jvmci_3("relocating at " PTR_FORMAT " (+%d) with destination at %d", p2i(pc), pc_offset, data_offset); |
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} else { |
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JVMCI_ERROR("unknown load or move instruction at " PTR_FORMAT, p2i(pc)); |
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} |
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} |
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void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination, TRAPS) { |
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address pc = (address) inst; |
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if (inst->is_call()) { |
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NativeCall* call = nativeCall_at(pc); |
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call->set_destination((address) foreign_call_destination); |
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_instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec()); |
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} else if (inst->is_jump()) { |
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NativeJump* jump = nativeJump_at(pc); |
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jump->set_jump_destination((address) foreign_call_destination); |
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_instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec()); |
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} else if (inst->is_general_jump()) { |
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NativeGeneralJump* jump = nativeGeneralJump_at(pc); |
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jump->set_jump_destination((address) foreign_call_destination); |
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_instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec()); |
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} else { |
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JVMCI_ERROR("unknown call or jump instruction at " PTR_FORMAT, p2i(pc)); |
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} |
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TRACE_jvmci_3("relocating (foreign call) at " PTR_FORMAT, p2i(inst)); |
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} |
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void CodeInstaller::pd_relocate_JavaMethod(Handle hotspot_method, jint pc_offset, TRAPS) { |
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#ifdef ASSERT |
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Method* method = NULL; |
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// we need to check, this might also be an unresolved method |
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if (hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass())) { |
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method = getMethodFromHotSpotMethod(hotspot_method()); |
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} |
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#endif |
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switch (_next_call_type) { |
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case INLINE_INVOKE: |
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break; |
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case INVOKEVIRTUAL: |
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case INVOKEINTERFACE: { |
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assert(method == NULL || !method->is_static(), "cannot call static method with invokeinterface"); |
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NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); |
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call->set_destination(SharedRuntime::get_resolve_virtual_call_stub()); |
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_instructions->relocate(call->instruction_address(), virtual_call_Relocation::spec(_invoke_mark_pc)); |
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break; |
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} |
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case INVOKESTATIC: { |
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assert(method == NULL || method->is_static(), "cannot call non-static method with invokestatic"); |
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NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); |
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call->set_destination(SharedRuntime::get_resolve_static_call_stub()); |
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_instructions->relocate(call->instruction_address(), relocInfo::static_call_type); |
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break; |
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} |
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case INVOKESPECIAL: { |
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assert(method == NULL || !method->is_static(), "cannot call static method with invokespecial"); |
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NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); |
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call->set_destination(SharedRuntime::get_resolve_opt_virtual_call_stub()); |
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_instructions->relocate(call->instruction_address(), relocInfo::opt_virtual_call_type); |
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break; |
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} |
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default: |
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JVMCI_ERROR("invalid _next_call_type value"); |
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break; |
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} |
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} |
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void CodeInstaller::pd_relocate_poll(address pc, jint mark, TRAPS) { |
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switch (mark) { |
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case POLL_NEAR: |
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JVMCI_ERROR("unimplemented"); |
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break; |
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case POLL_FAR: |
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_instructions->relocate(pc, relocInfo::poll_type); |
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break; |
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case POLL_RETURN_NEAR: |
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JVMCI_ERROR("unimplemented"); |
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break; |
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case POLL_RETURN_FAR: |
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_instructions->relocate(pc, relocInfo::poll_return_type); |
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break; |
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default: |
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JVMCI_ERROR("invalid mark value"); |
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break; |
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} |
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} |
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// convert JVMCI register indices (as used in oop maps) to HotSpot registers |
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VMReg CodeInstaller::get_hotspot_reg(jint jvmci_reg, TRAPS) { |
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if (jvmci_reg < RegisterImpl::number_of_registers) { |
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return as_Register(jvmci_reg)->as_VMReg(); |
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} else { |
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jint floatRegisterNumber = jvmci_reg - RegisterImpl::number_of_registers_for_jvmci; |
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if (floatRegisterNumber >= 0 && floatRegisterNumber < FloatRegisterImpl::number_of_registers) { |
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return as_FloatRegister(floatRegisterNumber)->as_VMReg(); |
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} |
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JVMCI_ERROR_NULL("invalid register number: %d", jvmci_reg); |
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} |
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} |
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bool CodeInstaller::is_general_purpose_reg(VMReg hotspotRegister) { |
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return !hotspotRegister->is_FloatRegister(); |
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} |