1 /* 2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include "jvmci/jvmciCodeInstaller.hpp" 25 #include "jvmci/jvmciRuntime.hpp" 26 #include "jvmci/jvmciCompilerToVM.hpp" 27 #include "jvmci/jvmciJavaClasses.hpp" 28 #include "oops/oop.inline.hpp" 29 #include "runtime/sharedRuntime.hpp" 30 #include "vmreg_aarch64.inline.hpp" 31 32 jint CodeInstaller::pd_next_offset(NativeInstruction* inst, jint pc_offset, Handle method, TRAPS) { 33 if (inst->is_call() || inst->is_jump() || inst->is_blr()) { 34 return pc_offset + NativeCall::instruction_size; 35 } else if (inst->is_general_jump()) { 36 return pc_offset + NativeGeneralJump::instruction_size; 37 } else { 38 JVMCI_ERROR_0("unsupported type of instruction for call site"); 39 } 40 } 41 42 void CodeInstaller::pd_patch_OopConstant(int pc_offset, Handle constant, TRAPS) { 43 address pc = _instructions->start() + pc_offset; 44 Handle obj = HotSpotObjectConstantImpl::object(constant); 45 jobject value = JNIHandles::make_local(obj()); 46 if (HotSpotObjectConstantImpl::compressed(constant)) { 47 int oop_index = _oop_recorder->find_index(value); 48 RelocationHolder rspec = oop_Relocation::spec(oop_index); 49 _instructions->relocate(pc, rspec, 1); 50 Unimplemented(); 51 } else { 52 NativeMovConstReg* move = nativeMovConstReg_at(pc); 53 move->set_data((intptr_t) value); 54 int oop_index = _oop_recorder->find_index(value); 55 RelocationHolder rspec = oop_Relocation::spec(oop_index); 56 _instructions->relocate(pc, rspec); 57 } 58 } 59 60 void CodeInstaller::pd_patch_MetaspaceConstant(int pc_offset, Handle constant, TRAPS) { 61 address pc = _instructions->start() + pc_offset; 62 if (HotSpotMetaspaceConstantImpl::compressed(constant)) { 63 narrowKlass narrowOop = record_narrow_metadata_reference(constant, CHECK); 64 TRACE_jvmci_3("relocating (narrow metaspace constant) at " PTR_FORMAT "/0x%x", p2i(pc), narrowOop); 65 Unimplemented(); 66 } else { 67 NativeMovConstReg* move = nativeMovConstReg_at(pc); 68 void* reference = record_metadata_reference(constant, CHECK); 69 move->set_data((intptr_t) reference); 70 TRACE_jvmci_3("relocating (metaspace constant) at " PTR_FORMAT "/" PTR_FORMAT, p2i(pc), p2i(reference)); 71 } 72 } 73 74 void CodeInstaller::pd_patch_DataSectionReference(int pc_offset, int data_offset, TRAPS) { 75 address pc = _instructions->start() + pc_offset; 76 NativeInstruction* inst = nativeInstruction_at(pc); 77 if (inst->is_adr_aligned() || inst->is_ldr_literal()) { 78 address dest = _constants->start() + data_offset; 79 _instructions->relocate(pc, section_word_Relocation::spec((address) dest, CodeBuffer::SECT_CONSTS)); 80 TRACE_jvmci_3("relocating at " PTR_FORMAT " (+%d) with destination at %d", p2i(pc), pc_offset, data_offset); 81 } else { 82 JVMCI_ERROR("unknown load or move instruction at " PTR_FORMAT, p2i(pc)); 83 } 84 } 85 86 void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination, TRAPS) { 87 address pc = (address) inst; 88 if (inst->is_call()) { 89 NativeCall* call = nativeCall_at(pc); 90 call->set_destination((address) foreign_call_destination); 91 _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec()); 92 } else if (inst->is_jump()) { 93 NativeJump* jump = nativeJump_at(pc); 94 jump->set_jump_destination((address) foreign_call_destination); 95 _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec()); 96 } else if (inst->is_general_jump()) { 97 NativeGeneralJump* jump = nativeGeneralJump_at(pc); 98 jump->set_jump_destination((address) foreign_call_destination); 99 _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec()); 100 } else { 101 JVMCI_ERROR("unknown call or jump instruction at " PTR_FORMAT, p2i(pc)); 102 } 103 TRACE_jvmci_3("relocating (foreign call) at " PTR_FORMAT, p2i(inst)); 104 } 105 106 void CodeInstaller::pd_relocate_JavaMethod(Handle hotspot_method, jint pc_offset, TRAPS) { 107 #ifdef ASSERT 108 Method* method = NULL; 109 // we need to check, this might also be an unresolved method 110 if (hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass())) { 111 method = getMethodFromHotSpotMethod(hotspot_method()); 112 } 113 #endif 114 switch (_next_call_type) { 115 case INLINE_INVOKE: 116 break; 117 case INVOKEVIRTUAL: 118 case INVOKEINTERFACE: { 119 assert(method == NULL || !method->is_static(), "cannot call static method with invokeinterface"); 120 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); 121 call->set_destination(SharedRuntime::get_resolve_virtual_call_stub()); 122 _instructions->relocate(call->instruction_address(), virtual_call_Relocation::spec(_invoke_mark_pc)); 123 break; 124 } 125 case INVOKESTATIC: { 126 assert(method == NULL || method->is_static(), "cannot call non-static method with invokestatic"); 127 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); 128 call->set_destination(SharedRuntime::get_resolve_static_call_stub()); 129 _instructions->relocate(call->instruction_address(), relocInfo::static_call_type); 130 break; 131 } 132 case INVOKESPECIAL: { 133 assert(method == NULL || !method->is_static(), "cannot call static method with invokespecial"); 134 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); 135 call->set_destination(SharedRuntime::get_resolve_opt_virtual_call_stub()); 136 _instructions->relocate(call->instruction_address(), relocInfo::opt_virtual_call_type); 137 break; 138 } 139 default: 140 JVMCI_ERROR("invalid _next_call_type value"); 141 break; 142 } 143 } 144 145 void CodeInstaller::pd_relocate_poll(address pc, jint mark, TRAPS) { 146 switch (mark) { 147 case POLL_NEAR: 148 JVMCI_ERROR("unimplemented"); 149 break; 150 case POLL_FAR: 151 _instructions->relocate(pc, relocInfo::poll_type); 152 break; 153 case POLL_RETURN_NEAR: 154 JVMCI_ERROR("unimplemented"); 155 break; 156 case POLL_RETURN_FAR: 157 _instructions->relocate(pc, relocInfo::poll_return_type); 158 break; 159 default: 160 JVMCI_ERROR("invalid mark value"); 161 break; 162 } 163 } 164 165 // convert JVMCI register indices (as used in oop maps) to HotSpot registers 166 VMReg CodeInstaller::get_hotspot_reg(jint jvmci_reg, TRAPS) { 167 if (jvmci_reg < RegisterImpl::number_of_registers) { 168 return as_Register(jvmci_reg)->as_VMReg(); 169 } else { 170 jint floatRegisterNumber = jvmci_reg - RegisterImpl::number_of_registers; 171 if (floatRegisterNumber < FloatRegisterImpl::number_of_registers) { 172 return as_FloatRegister(floatRegisterNumber)->as_VMReg(); 173 } 174 JVMCI_ERROR_NULL("invalid register number: %d", jvmci_reg); 175 } 176 } 177 178 bool CodeInstaller::is_general_purpose_reg(VMReg hotspotRegister) { 179 return !hotspotRegister->is_FloatRegister(); 180 }