| /* |
| * Copyright (c) 2015, 2017, 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 "jvmci/jvmciCodeInstaller.hpp" |
| #include "jvmci/jvmciRuntime.hpp" |
| #include "jvmci/jvmciCompilerToVM.hpp" |
| #include "jvmci/jvmciJavaClasses.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "runtime/sharedRuntime.hpp" |
| #include "vmreg_aarch64.inline.hpp" |
| |
| jint CodeInstaller::pd_next_offset(NativeInstruction* inst, jint pc_offset, Handle method, TRAPS) { |
| if (inst->is_call() || inst->is_jump() || inst->is_blr()) { |
| return pc_offset + NativeCall::instruction_size; |
| } else if (inst->is_general_jump()) { |
| return pc_offset + NativeGeneralJump::instruction_size; |
| } else { |
| JVMCI_ERROR_0("unsupported type of instruction for call site"); |
| } |
| } |
| |
| void CodeInstaller::pd_patch_OopConstant(int pc_offset, Handle constant, TRAPS) { |
| address pc = _instructions->start() + pc_offset; |
| #ifdef ASSERT |
| { |
| NativeInstruction *insn = nativeInstruction_at(pc); |
| if (HotSpotObjectConstantImpl::compressed(constant)) { |
| // Mov narrow constant: movz n << 16, movk |
| assert(Instruction_aarch64::extract(insn->encoding(), 31, 21) == 0b11010010101 && |
| nativeInstruction_at(pc+4)->is_movk(), "wrong insn in patch"); |
| } else { |
| // Move wide constant: movz n, movk, movk. |
| assert(nativeInstruction_at(pc+4)->is_movk() |
| && nativeInstruction_at(pc+8)->is_movk(), "wrong insn in patch"); |
| } |
| } |
| #endif // ASSERT |
| Handle obj(THREAD, HotSpotObjectConstantImpl::object(constant)); |
| jobject value = JNIHandles::make_local(obj()); |
| MacroAssembler::patch_oop(pc, (address)obj()); |
| int oop_index = _oop_recorder->find_index(value); |
| RelocationHolder rspec = oop_Relocation::spec(oop_index); |
| _instructions->relocate(pc, rspec); |
| } |
| |
| void CodeInstaller::pd_patch_MetaspaceConstant(int pc_offset, Handle constant, TRAPS) { |
| address pc = _instructions->start() + pc_offset; |
| if (HotSpotMetaspaceConstantImpl::compressed(constant)) { |
| narrowKlass narrowOop = record_narrow_metadata_reference(_instructions, pc, constant, CHECK); |
| MacroAssembler::patch_narrow_klass(pc, narrowOop); |
| TRACE_jvmci_3("relocating (narrow metaspace constant) at " PTR_FORMAT "/0x%x", p2i(pc), narrowOop); |
| } else { |
| NativeMovConstReg* move = nativeMovConstReg_at(pc); |
| void* reference = record_metadata_reference(_instructions, pc, constant, CHECK); |
| move->set_data((intptr_t) reference); |
| TRACE_jvmci_3("relocating (metaspace constant) at " PTR_FORMAT "/" PTR_FORMAT, p2i(pc), p2i(reference)); |
| } |
| } |
| |
| void CodeInstaller::pd_patch_DataSectionReference(int pc_offset, int data_offset, TRAPS) { |
| address pc = _instructions->start() + pc_offset; |
| NativeInstruction* inst = nativeInstruction_at(pc); |
| if (inst->is_adr_aligned() || inst->is_ldr_literal()) { |
| address dest = _constants->start() + data_offset; |
| _instructions->relocate(pc, section_word_Relocation::spec((address) dest, CodeBuffer::SECT_CONSTS)); |
| TRACE_jvmci_3("relocating at " PTR_FORMAT " (+%d) with destination at %d", p2i(pc), pc_offset, data_offset); |
| } else { |
| JVMCI_ERROR("unknown load or move instruction at " PTR_FORMAT, p2i(pc)); |
| } |
| } |
| |
| void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination, TRAPS) { |
| address pc = (address) inst; |
| if (inst->is_call()) { |
| NativeCall* call = nativeCall_at(pc); |
| call->set_destination((address) foreign_call_destination); |
| _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec()); |
| } else if (inst->is_jump()) { |
| NativeJump* jump = nativeJump_at(pc); |
| jump->set_jump_destination((address) foreign_call_destination); |
| _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec()); |
| } else if (inst->is_general_jump()) { |
| NativeGeneralJump* jump = nativeGeneralJump_at(pc); |
| jump->set_jump_destination((address) foreign_call_destination); |
| _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec()); |
| } else { |
| JVMCI_ERROR("unknown call or jump instruction at " PTR_FORMAT, p2i(pc)); |
| } |
| TRACE_jvmci_3("relocating (foreign call) at " PTR_FORMAT, p2i(inst)); |
| } |
| |
| void CodeInstaller::pd_relocate_JavaMethod(Handle hotspot_method, jint pc_offset, TRAPS) { |
| #ifdef ASSERT |
| Method* method = NULL; |
| // we need to check, this might also be an unresolved method |
| if (hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass())) { |
| method = getMethodFromHotSpotMethod(hotspot_method()); |
| } |
| #endif |
| switch (_next_call_type) { |
| case INLINE_INVOKE: |
| break; |
| case INVOKEVIRTUAL: |
| case INVOKEINTERFACE: { |
| assert(method == NULL || !method->is_static(), "cannot call static method with invokeinterface"); |
| NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); |
| call->set_destination(SharedRuntime::get_resolve_virtual_call_stub()); |
| _instructions->relocate(call->instruction_address(), virtual_call_Relocation::spec(_invoke_mark_pc)); |
| break; |
| } |
| case INVOKESTATIC: { |
| assert(method == NULL || method->is_static(), "cannot call non-static method with invokestatic"); |
| NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); |
| call->set_destination(SharedRuntime::get_resolve_static_call_stub()); |
| _instructions->relocate(call->instruction_address(), relocInfo::static_call_type); |
| break; |
| } |
| case INVOKESPECIAL: { |
| assert(method == NULL || !method->is_static(), "cannot call static method with invokespecial"); |
| NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); |
| call->set_destination(SharedRuntime::get_resolve_opt_virtual_call_stub()); |
| _instructions->relocate(call->instruction_address(), relocInfo::opt_virtual_call_type); |
| break; |
| } |
| default: |
| JVMCI_ERROR("invalid _next_call_type value"); |
| break; |
| } |
| } |
| |
| void CodeInstaller::pd_relocate_poll(address pc, jint mark, TRAPS) { |
| switch (mark) { |
| case POLL_NEAR: |
| JVMCI_ERROR("unimplemented"); |
| break; |
| case POLL_FAR: |
| _instructions->relocate(pc, relocInfo::poll_type); |
| break; |
| case POLL_RETURN_NEAR: |
| JVMCI_ERROR("unimplemented"); |
| break; |
| case POLL_RETURN_FAR: |
| _instructions->relocate(pc, relocInfo::poll_return_type); |
| break; |
| default: |
| JVMCI_ERROR("invalid mark value"); |
| break; |
| } |
| } |
| |
| // convert JVMCI register indices (as used in oop maps) to HotSpot registers |
| VMReg CodeInstaller::get_hotspot_reg(jint jvmci_reg, TRAPS) { |
| if (jvmci_reg < RegisterImpl::number_of_registers) { |
| return as_Register(jvmci_reg)->as_VMReg(); |
| } else { |
| jint floatRegisterNumber = jvmci_reg - RegisterImpl::number_of_registers_for_jvmci; |
| if (floatRegisterNumber >= 0 && floatRegisterNumber < FloatRegisterImpl::number_of_registers) { |
| return as_FloatRegister(floatRegisterNumber)->as_VMReg(); |
| } |
| JVMCI_ERROR_NULL("invalid register number: %d", jvmci_reg); |
| } |
| } |
| |
| bool CodeInstaller::is_general_purpose_reg(VMReg hotspotRegister) { |
| return !hotspotRegister->is_FloatRegister(); |
| } |