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