1 /*
2 * Copyright (c) 2013, 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_sparc.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()) {
34 return pc_offset + NativeCall::instruction_size;
35 } else if (inst->is_call_reg()) {
36 return pc_offset + NativeCallReg::instruction_size;
37 } else if (inst->is_sethi()) {
38 return pc_offset + NativeFarCall::instruction_size;
39 } else {
40 JVMCI_ERROR_0("unsupported type of instruction for call site");
41 return 0;
42 }
43 }
44
45 void CodeInstaller::pd_patch_OopConstant(int pc_offset, Handle constant, TRAPS) {
46 address pc = _instructions->start() + pc_offset;
47 Handle obj = HotSpotObjectConstantImpl::object(constant);
48 jobject value = JNIHandles::make_local(obj());
49 if (HotSpotObjectConstantImpl::compressed(constant)) {
50 #ifdef _LP64
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 JVMCI_ERROR("compressed oop on 32bit");
56 #endif
57 } else {
58 NativeMovConstReg* move = nativeMovConstReg_at(pc);
59 move->set_data((intptr_t) value);
60
61 // We need two relocations: one on the sethi and one on the add.
62 int oop_index = _oop_recorder->find_index(value);
63 RelocationHolder rspec = oop_Relocation::spec(oop_index);
64 _instructions->relocate(pc + NativeMovConstReg::sethi_offset, rspec);
65 _instructions->relocate(pc + NativeMovConstReg::add_offset, rspec);
66 }
67 }
68
69 void CodeInstaller::pd_patch_MetaspaceConstant(int pc_offset, Handle constant, TRAPS) {
70 address pc = _instructions->start() + pc_offset;
71 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
72 #ifdef _LP64
73 NativeMovConstReg32* move = nativeMovConstReg32_at(pc);
74 narrowKlass narrowOop = record_narrow_metadata_reference(constant, CHECK);
75 move->set_data((intptr_t)narrowOop);
76 TRACE_jvmci_3("relocating (narrow metaspace constant) at " PTR_FORMAT "/0x%x", p2i(pc), narrowOop);
77 #else
78 JVMCI_ERROR("compressed Klass* on 32bit");
79 #endif
80 } else {
81 NativeMovConstReg* move = nativeMovConstReg_at(pc);
82 void* reference = record_metadata_reference(constant, CHECK);
83 move->set_data((intptr_t)reference);
84 TRACE_jvmci_3("relocating (metaspace constant) at " PTR_FORMAT "/" PTR_FORMAT, p2i(pc), p2i(reference));
85 }
86 }
87
88 void CodeInstaller::pd_patch_DataSectionReference(int pc_offset, int data_offset, TRAPS) {
89 address pc = _instructions->start() + pc_offset;
90 NativeInstruction* inst = nativeInstruction_at(pc);
91 NativeInstruction* inst1 = nativeInstruction_at(pc + 4);
92 if(inst->is_sethi() && inst1->is_nop()) {
93 address const_start = _constants->start();
94 address dest = _constants->start() + data_offset;
95 if(_constants_size > 0) {
96 _instructions->relocate(pc + NativeMovConstReg::sethi_offset, internal_word_Relocation::spec((address) dest));
97 _instructions->relocate(pc + NativeMovConstReg::add_offset, internal_word_Relocation::spec((address) dest));
98 }
99 TRACE_jvmci_3("relocating at " PTR_FORMAT " (+%d) with destination at %d", p2i(pc), pc_offset, data_offset);
100 }else {
101 int const_size = align_size_up(_constants->end()-_constants->start(), CodeEntryAlignment);
102 NativeMovRegMem* load = nativeMovRegMem_at(pc);
103 // This offset must match with SPARCLoadConstantTableBaseOp.emitCode
104 load->set_offset(- (const_size - data_offset + Assembler::min_simm13()));
105 TRACE_jvmci_3("relocating ld at " PTR_FORMAT " (+%d) with destination at %d", p2i(pc), pc_offset, data_offset);
106 }
107 }
108
109 void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination, TRAPS) {
110 address pc = (address) inst;
111 if (inst->is_call()) {
112 NativeCall* call = nativeCall_at(pc);
113 call->set_destination((address) foreign_call_destination);
114 _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec());
115 } else if (inst->is_sethi()) {
116 NativeJump* jump = nativeJump_at(pc);
117 jump->set_jump_destination((address) foreign_call_destination);
118 _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec());
119 } else {
120 JVMCI_ERROR("unknown call or jump instruction at " PTR_FORMAT, p2i(pc));
121 }
122 TRACE_jvmci_3("relocating (foreign call) at " PTR_FORMAT, p2i(inst));
123 }
124
125 void CodeInstaller::pd_relocate_JavaMethod(Handle hotspot_method, jint pc_offset, TRAPS) {
126 #ifdef ASSERT
127 Method* method = NULL;
128 // we need to check, this might also be an unresolved method
129 if (hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
130 method = getMethodFromHotSpotMethod(hotspot_method());
131 }
132 #endif
133 switch (_next_call_type) {
134 case INLINE_INVOKE:
135 break;
136 case INVOKEVIRTUAL:
137 case INVOKEINTERFACE: {
138 assert(method == NULL || !method->is_static(), "cannot call static method with invokeinterface");
139 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
140 call->set_destination(SharedRuntime::get_resolve_virtual_call_stub());
141 _instructions->relocate(call->instruction_address(), virtual_call_Relocation::spec(_invoke_mark_pc));
142 break;
143 }
144 case INVOKESTATIC: {
145 assert(method == NULL || method->is_static(), "cannot call non-static method with invokestatic");
146 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
147 call->set_destination(SharedRuntime::get_resolve_static_call_stub());
148 _instructions->relocate(call->instruction_address(), relocInfo::static_call_type);
149 break;
150 }
151 case INVOKESPECIAL: {
152 assert(method == NULL || !method->is_static(), "cannot call static method with invokespecial");
153 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
154 call->set_destination(SharedRuntime::get_resolve_opt_virtual_call_stub());
155 _instructions->relocate(call->instruction_address(), relocInfo::opt_virtual_call_type);
156 break;
157 }
158 default:
159 JVMCI_ERROR("invalid _next_call_type value");
160 break;
161 }
162 }
163
164 void CodeInstaller::pd_relocate_poll(address pc, jint mark, TRAPS) {
165 switch (mark) {
166 case POLL_NEAR:
167 JVMCI_ERROR("unimplemented");
168 break;
169 case POLL_FAR:
170 _instructions->relocate(pc, relocInfo::poll_type);
171 break;
172 case POLL_RETURN_NEAR:
173 JVMCI_ERROR("unimplemented");
174 break;
175 case POLL_RETURN_FAR:
176 _instructions->relocate(pc, relocInfo::poll_return_type);
177 break;
178 default:
179 JVMCI_ERROR("invalid mark value");
180 break;
181 }
182 }
183
184 // convert JVMCI register indices (as used in oop maps) to HotSpot registers
185 VMReg CodeInstaller::get_hotspot_reg(jint jvmci_reg, TRAPS) {
186 // JVMCI Registers are numbered as follows:
187 // 0..31: Thirty-two General Purpose registers (CPU Registers)
188 // 32..63: Thirty-two single precision float registers
189 // 64..95: Thirty-two double precision float registers
190 // 96..111: Sixteen quad precision float registers
191 if (jvmci_reg < 32) {
192 return as_Register(jvmci_reg)->as_VMReg();
193 } else {
194 jint floatRegisterNumber;
195 if(jvmci_reg < 64) { // Single precision
196 floatRegisterNumber = jvmci_reg - 32;
197 } else if(jvmci_reg < 96) {
198 floatRegisterNumber = 2 * (jvmci_reg - 64);
199 } else if(jvmci_reg < 112) {
200 floatRegisterNumber = 4 * (jvmci_reg - 96);
201 } else {
202 JVMCI_ERROR_NULL("invalid register number: %d", jvmci_reg);
203 }
204 return as_FloatRegister(floatRegisterNumber)->as_VMReg();
205 }
206 }
207
208 bool CodeInstaller::is_general_purpose_reg(VMReg hotspotRegister) {
209 return !hotspotRegister->is_FloatRegister();
210 }