1 /* 2 * Copyright (c) 2013, 2019, 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/handles.inline.hpp" 30 #include "runtime/sharedRuntime.hpp" 31 #include "utilities/align.hpp" 32 #include "vmreg_sparc.inline.hpp" 33 34 jint CodeInstaller::pd_next_offset(NativeInstruction* inst, jint pc_offset, JVMCIObject method, JVMCI_TRAPS) { 35 if (inst->is_call() || inst->is_jump()) { 36 return pc_offset + NativeCall::instruction_size; 37 } else if (inst->is_call_reg()) { 38 return pc_offset + NativeCallReg::instruction_size; 39 } else if (inst->is_sethi()) { 40 return pc_offset + NativeFarCall::instruction_size; 41 } else { 42 JVMCI_ERROR_0("unsupported type of instruction for call site"); 43 return 0; 44 } 45 } 46 47 void CodeInstaller::pd_patch_OopConstant(int pc_offset, JVMCIObject constant, JVMCI_TRAPS) { 48 address pc = _instructions->start() + pc_offset; 49 Handle obj = jvmci_env()->asConstant(constant, JVMCI_CHECK); 50 jobject value = JNIHandles::make_local(obj()); 51 if (jvmci_env()->get_HotSpotObjectConstantImpl_compressed(constant)) { 52 int oop_index = _oop_recorder->find_index(value); 53 RelocationHolder rspec = oop_Relocation::spec(oop_index); 54 _instructions->relocate(pc, rspec, 1); 55 } else { 56 NativeMovConstReg* move = nativeMovConstReg_at(pc); 57 move->set_data((intptr_t) value); 58 59 // We need two relocations: one on the sethi and one on the add. 60 int oop_index = _oop_recorder->find_index(value); 61 RelocationHolder rspec = oop_Relocation::spec(oop_index); 62 _instructions->relocate(pc + NativeMovConstReg::sethi_offset, rspec); 63 _instructions->relocate(pc + NativeMovConstReg::add_offset, rspec); 64 } 65 } 66 67 void CodeInstaller::pd_patch_MetaspaceConstant(int pc_offset, JVMCIObject constant, JVMCI_TRAPS) { 68 address pc = _instructions->start() + pc_offset; 69 if (jvmci_env()->get_HotSpotMetaspaceConstantImpl_compressed(constant)) { 70 NativeMovConstReg32* move = nativeMovConstReg32_at(pc); 71 narrowKlass narrowOop = record_narrow_metadata_reference(_instructions, pc, constant, JVMCI_CHECK); 72 move->set_data((intptr_t)narrowOop); 73 TRACE_jvmci_3("relocating (narrow metaspace constant) at " PTR_FORMAT "/0x%x", p2i(pc), narrowOop); 74 } else { 75 NativeMovConstReg* move = nativeMovConstReg_at(pc); 76 void* reference = record_metadata_reference(_instructions, pc, constant, JVMCI_CHECK); 77 move->set_data((intptr_t)reference); 78 TRACE_jvmci_3("relocating (metaspace constant) at " PTR_FORMAT "/" PTR_FORMAT, p2i(pc), p2i(reference)); 79 } 80 } 81 82 void CodeInstaller::pd_patch_DataSectionReference(int pc_offset, int data_offset, JVMCI_TRAPS) { 83 address pc = _instructions->start() + pc_offset; 84 NativeInstruction* inst = nativeInstruction_at(pc); 85 NativeInstruction* inst1 = nativeInstruction_at(pc + 4); 86 if(inst->is_sethi() && inst1->is_nop()) { 87 address const_start = _constants->start(); 88 address dest = _constants->start() + data_offset; 89 if(_constants_size > 0) { 90 _instructions->relocate(pc + NativeMovConstReg::sethi_offset, internal_word_Relocation::spec((address) dest)); 91 _instructions->relocate(pc + NativeMovConstReg::add_offset, internal_word_Relocation::spec((address) dest)); 92 } 93 TRACE_jvmci_3("relocating at " PTR_FORMAT " (+%d) with destination at %d", p2i(pc), pc_offset, data_offset); 94 }else { 95 int const_size = align_up(_constants->end()-_constants->start(), CodeEntryAlignment); 96 NativeMovRegMem* load = nativeMovRegMem_at(pc); 97 // This offset must match with SPARCLoadConstantTableBaseOp.emitCode 98 load->set_offset(- (const_size - data_offset + Assembler::min_simm13())); 99 TRACE_jvmci_3("relocating ld at " PTR_FORMAT " (+%d) with destination at %d", p2i(pc), pc_offset, data_offset); 100 } 101 } 102 103 void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination, JVMCI_TRAPS) { 104 address pc = (address) inst; 105 if (inst->is_call()) { 106 NativeCall* call = nativeCall_at(pc); 107 call->set_destination((address) foreign_call_destination); 108 _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec()); 109 } else if (inst->is_sethi()) { 110 NativeJump* jump = nativeJump_at(pc); 111 jump->set_jump_destination((address) foreign_call_destination); 112 _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec()); 113 } else { 114 JVMCI_ERROR("unknown call or jump instruction at " PTR_FORMAT, p2i(pc)); 115 } 116 TRACE_jvmci_3("relocating (foreign call) at " PTR_FORMAT, p2i(inst)); 117 } 118 119 void CodeInstaller::pd_relocate_JavaMethod(CodeBuffer &, JVMCIObject hotspot_method, jint pc_offset, JVMCI_TRAPS) { 120 #ifdef ASSERT 121 Method* method = NULL; 122 // we need to check, this might also be an unresolved method 123 if (JVMCIENV->isa_HotSpotResolvedJavaMethodImpl(hotspot_method)) { 124 method = JVMCIENV->asMethod(hotspot_method); 125 } 126 #endif 127 switch (_next_call_type) { 128 case INLINE_INVOKE: 129 break; 130 case INVOKEVIRTUAL: 131 case INVOKEINTERFACE: { 132 assert(method == NULL || !method->is_static(), "cannot call static method with invokeinterface"); 133 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); 134 call->set_destination(SharedRuntime::get_resolve_virtual_call_stub()); 135 _instructions->relocate(call->instruction_address(), virtual_call_Relocation::spec(_invoke_mark_pc)); 136 break; 137 } 138 case INVOKESTATIC: { 139 assert(method == NULL || method->is_static(), "cannot call non-static method with invokestatic"); 140 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); 141 call->set_destination(SharedRuntime::get_resolve_static_call_stub()); 142 _instructions->relocate(call->instruction_address(), relocInfo::static_call_type); 143 break; 144 } 145 case INVOKESPECIAL: { 146 assert(method == NULL || !method->is_static(), "cannot call static method with invokespecial"); 147 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); 148 call->set_destination(SharedRuntime::get_resolve_opt_virtual_call_stub()); 149 _instructions->relocate(call->instruction_address(), relocInfo::opt_virtual_call_type); 150 break; 151 } 152 default: 153 JVMCI_ERROR("invalid _next_call_type value"); 154 break; 155 } 156 } 157 158 void CodeInstaller::pd_relocate_poll(address pc, jint mark, JVMCI_TRAPS) { 159 switch (mark) { 160 case POLL_NEAR: 161 JVMCI_ERROR("unimplemented"); 162 break; 163 case POLL_FAR: 164 _instructions->relocate(pc, relocInfo::poll_type); 165 break; 166 case POLL_RETURN_NEAR: 167 JVMCI_ERROR("unimplemented"); 168 break; 169 case POLL_RETURN_FAR: 170 _instructions->relocate(pc, relocInfo::poll_return_type); 171 break; 172 default: 173 JVMCI_ERROR("invalid mark value"); 174 break; 175 } 176 } 177 178 // convert JVMCI register indices (as used in oop maps) to HotSpot registers 179 VMReg CodeInstaller::get_hotspot_reg(jint jvmci_reg, JVMCI_TRAPS) { 180 // JVMCI Registers are numbered as follows: 181 // 0..31: Thirty-two General Purpose registers (CPU Registers) 182 // 32..63: Thirty-two single precision float registers 183 // 64..95: Thirty-two double precision float registers 184 // 96..111: Sixteen quad precision float registers 185 if (jvmci_reg < 32) { 186 return as_Register(jvmci_reg)->as_VMReg(); 187 } else { 188 jint floatRegisterNumber; 189 if(jvmci_reg < 64) { // Single precision 190 floatRegisterNumber = jvmci_reg - 32; 191 } else if(jvmci_reg < 96) { 192 floatRegisterNumber = 2 * (jvmci_reg - 64); 193 } else if(jvmci_reg < 112) { 194 floatRegisterNumber = 4 * (jvmci_reg - 96); 195 } else { 196 JVMCI_ERROR_NULL("invalid register number: %d", jvmci_reg); 197 } 198 return as_FloatRegister(floatRegisterNumber)->as_VMReg(); 199 } 200 } 201 202 bool CodeInstaller::is_general_purpose_reg(VMReg hotspotRegister) { 203 return !hotspotRegister->is_FloatRegister(); 204 }