1 /*
2 * Copyright (c) 2013, 2017, 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 "utilities/align.hpp"
31 #include "vmreg_sparc.inline.hpp"
32
33 jint CodeInstaller::pd_next_offset(NativeInstruction* inst, jint pc_offset, Handle method, TRAPS) {
34 if (inst->is_call() || inst->is_jump()) {
35 return pc_offset + NativeCall::instruction_size;
36 } else if (inst->is_call_reg()) {
37 return pc_offset + NativeCallReg::instruction_size;
38 } else if (inst->is_sethi()) {
39 return pc_offset + NativeFarCall::instruction_size;
40 } else {
41 JVMCI_ERROR_0("unsupported type of instruction for call site");
42 return 0;
43 }
44 }
45
46 void CodeInstaller::pd_patch_OopConstant(int pc_offset, Handle constant, TRAPS) {
47 address pc = _instructions->start() + pc_offset;
48 Handle obj(THREAD, HotSpotObjectConstantImpl::object(constant));
49 jobject value = JNIHandles::make_local(obj());
50 if (HotSpotObjectConstantImpl::compressed(constant)) {
51 int oop_index = _oop_recorder->find_index(value);
52 RelocationHolder rspec = oop_Relocation::spec(oop_index);
53 _instructions->relocate(pc, rspec, 1);
54 } else {
55 NativeMovConstReg* move = nativeMovConstReg_at(pc);
56 move->set_data((intptr_t) value);
57
58 // We need two relocations: one on the sethi and one on the add.
59 int oop_index = _oop_recorder->find_index(value);
60 RelocationHolder rspec = oop_Relocation::spec(oop_index);
61 _instructions->relocate(pc + NativeMovConstReg::sethi_offset, rspec);
62 _instructions->relocate(pc + NativeMovConstReg::add_offset, rspec);
63 }
64 }
65
66 void CodeInstaller::pd_patch_MetaspaceConstant(int pc_offset, Handle constant, TRAPS) {
67 address pc = _instructions->start() + pc_offset;
68 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
69 NativeMovConstReg32* move = nativeMovConstReg32_at(pc);
70 narrowKlass narrowOop = record_narrow_metadata_reference(_instructions, pc, constant, CHECK);
71 move->set_data((intptr_t)narrowOop);
72 TRACE_jvmci_3("relocating (narrow metaspace constant) at " PTR_FORMAT "/0x%x", p2i(pc), narrowOop);
73 } else {
74 NativeMovConstReg* move = nativeMovConstReg_at(pc);
75 void* reference = record_metadata_reference(_instructions, pc, constant, CHECK);
76 move->set_data((intptr_t)reference);
77 TRACE_jvmci_3("relocating (metaspace constant) at " PTR_FORMAT "/" PTR_FORMAT, p2i(pc), p2i(reference));
78 }
79 }
80
81 void CodeInstaller::pd_patch_DataSectionReference(int pc_offset, int data_offset, TRAPS) {
82 address pc = _instructions->start() + pc_offset;
83 NativeInstruction* inst = nativeInstruction_at(pc);
84 NativeInstruction* inst1 = nativeInstruction_at(pc + 4);
85 if(inst->is_sethi() && inst1->is_nop()) {
86 address const_start = _constants->start();
87 address dest = _constants->start() + data_offset;
88 if(_constants_size > 0) {
89 _instructions->relocate(pc + NativeMovConstReg::sethi_offset, internal_word_Relocation::spec((address) dest));
90 _instructions->relocate(pc + NativeMovConstReg::add_offset, internal_word_Relocation::spec((address) dest));
91 }
92 TRACE_jvmci_3("relocating at " PTR_FORMAT " (+%d) with destination at %d", p2i(pc), pc_offset, data_offset);
93 }else {
94 int const_size = align_up(_constants->end()-_constants->start(), CodeEntryAlignment);
95 NativeMovRegMem* load = nativeMovRegMem_at(pc);
96 // This offset must match with SPARCLoadConstantTableBaseOp.emitCode
97 load->set_offset(- (const_size - data_offset + Assembler::min_simm13()));
98 TRACE_jvmci_3("relocating ld at " PTR_FORMAT " (+%d) with destination at %d", p2i(pc), pc_offset, data_offset);
99 }
100 }
101
102 void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination, TRAPS) {
103 address pc = (address) inst;
104 if (inst->is_call()) {
105 NativeCall* call = nativeCall_at(pc);
106 call->set_destination((address) foreign_call_destination);
107 _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec());
108 } else if (inst->is_sethi()) {
109 NativeJump* jump = nativeJump_at(pc);
110 jump->set_jump_destination((address) foreign_call_destination);
111 _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec());
112 } else {
113 JVMCI_ERROR("unknown call or jump instruction at " PTR_FORMAT, p2i(pc));
114 }
115 TRACE_jvmci_3("relocating (foreign call) at " PTR_FORMAT, p2i(inst));
116 }
117
118 void CodeInstaller::pd_relocate_JavaMethod(Handle hotspot_method, jint pc_offset, TRAPS) {
119 #ifdef ASSERT
120 Method* method = NULL;
121 // we need to check, this might also be an unresolved method
122 if (hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
123 method = getMethodFromHotSpotMethod(hotspot_method());
124 }
125 #endif
126 switch (_next_call_type) {
127 case INLINE_INVOKE:
128 break;
129 case INVOKEVIRTUAL:
130 case INVOKEINTERFACE: {
131 assert(method == NULL || !method->is_static(), "cannot call static method with invokeinterface");
132 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
133 call->set_destination(SharedRuntime::get_resolve_virtual_call_stub());
134 _instructions->relocate(call->instruction_address(), virtual_call_Relocation::spec(_invoke_mark_pc));
135 break;
136 }
137 case INVOKESTATIC: {
138 assert(method == NULL || method->is_static(), "cannot call non-static method with invokestatic");
139 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
140 call->set_destination(SharedRuntime::get_resolve_static_call_stub());
141 _instructions->relocate(call->instruction_address(), relocInfo::static_call_type);
142 break;
143 }
144 case INVOKESPECIAL: {
145 assert(method == NULL || !method->is_static(), "cannot call static method with invokespecial");
146 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
147 call->set_destination(SharedRuntime::get_resolve_opt_virtual_call_stub());
148 _instructions->relocate(call->instruction_address(), relocInfo::opt_virtual_call_type);
149 break;
150 }
151 default:
152 JVMCI_ERROR("invalid _next_call_type value");
153 break;
154 }
155 }
156
157 void CodeInstaller::pd_relocate_poll(address pc, jint mark, TRAPS) {
158 switch (mark) {
159 case POLL_NEAR:
160 JVMCI_ERROR("unimplemented");
161 break;
162 case POLL_FAR:
163 _instructions->relocate(pc, relocInfo::poll_type);
164 break;
165 case POLL_RETURN_NEAR:
166 JVMCI_ERROR("unimplemented");
167 break;
168 case POLL_RETURN_FAR:
169 _instructions->relocate(pc, relocInfo::poll_return_type);
170 break;
171 default:
172 JVMCI_ERROR("invalid mark value");
173 break;
174 }
175 }
176
177 // convert JVMCI register indices (as used in oop maps) to HotSpot registers
178 VMReg CodeInstaller::get_hotspot_reg(jint jvmci_reg, TRAPS) {
179 // JVMCI Registers are numbered as follows:
180 // 0..31: Thirty-two General Purpose registers (CPU Registers)
181 // 32..63: Thirty-two single precision float registers
182 // 64..95: Thirty-two double precision float registers
183 // 96..111: Sixteen quad precision float registers
184 if (jvmci_reg < 32) {
185 return as_Register(jvmci_reg)->as_VMReg();
186 } else {
187 jint floatRegisterNumber;
188 if(jvmci_reg < 64) { // Single precision
189 floatRegisterNumber = jvmci_reg - 32;
190 } else if(jvmci_reg < 96) {
191 floatRegisterNumber = 2 * (jvmci_reg - 64);
192 } else if(jvmci_reg < 112) {
193 floatRegisterNumber = 4 * (jvmci_reg - 96);
194 } else {
195 JVMCI_ERROR_NULL("invalid register number: %d", jvmci_reg);
196 }
197 return as_FloatRegister(floatRegisterNumber)->as_VMReg();
198 }
199 }
200
201 bool CodeInstaller::is_general_purpose_reg(VMReg hotspotRegister) {
202 return !hotspotRegister->is_FloatRegister();
203 }