1 /*
2 * Copyright (c) 2013, 2015, 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, oop method) {
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 fatal("unsupported type of instruction for call site");
41 return 0;
42 }
43 }
44
45 void CodeInstaller::pd_patch_OopConstant(int pc_offset, Handle& constant) {
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 fatal("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_DataSectionReference(int pc_offset, int data_offset) {
70 address pc = _instructions->start() + pc_offset;
71 NativeInstruction* inst = nativeInstruction_at(pc);
72 NativeInstruction* inst1 = nativeInstruction_at(pc + 4);
73 if(inst->is_sethi() && inst1->is_nop()) {
74 address const_start = _constants->start();
75 address dest = _constants->start() + data_offset;
76 if(_constants_size > 0) {
77 _instructions->relocate(pc + NativeMovConstReg::sethi_offset, internal_word_Relocation::spec((address) dest));
78 _instructions->relocate(pc + NativeMovConstReg::add_offset, internal_word_Relocation::spec((address) dest));
79 }
80 TRACE_jvmci_3("relocating at " PTR_FORMAT " (+%d) with destination at %d", p2i(pc), pc_offset, data_offset);
81 }else {
82 int const_size = align_size_up(_constants->end()-_constants->start(), CodeEntryAlignment);
83 NativeMovRegMem* load = nativeMovRegMem_at(pc);
84 // This offset must match with SPARCLoadConstantTableBaseOp.emitCode
85 load->set_offset(- (const_size - data_offset + Assembler::min_simm13()));
86 TRACE_jvmci_3("relocating ld at " PTR_FORMAT " (+%d) with destination at %d", p2i(pc), pc_offset, data_offset);
87 }
88 }
89
90 void CodeInstaller::pd_relocate_CodeBlob(CodeBlob* cb, NativeInstruction* inst) {
91 fatal("CodeInstaller::pd_relocate_CodeBlob - sparc unimp");
92 }
93
94 void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination) {
95 address pc = (address) inst;
96 if (inst->is_call()) {
97 NativeCall* call = nativeCall_at(pc);
98 call->set_destination((address) foreign_call_destination);
99 _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec());
100 } else if (inst->is_sethi()) {
101 NativeJump* jump = nativeJump_at(pc);
102 jump->set_jump_destination((address) foreign_call_destination);
103 _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec());
104 } else {
105 fatal(err_msg("unknown call or jump instruction at " PTR_FORMAT, p2i(pc)));
106 }
107 TRACE_jvmci_3("relocating (foreign call) at " PTR_FORMAT, p2i(inst));
108 }
109
110 void CodeInstaller::pd_relocate_JavaMethod(oop hotspot_method, jint pc_offset) {
111 #ifdef ASSERT
112 Method* method = NULL;
113 // we need to check, this might also be an unresolved method
114 if (hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
115 method = getMethodFromHotSpotMethod(hotspot_method);
116 }
117 #endif
118 switch (_next_call_type) {
119 case INLINE_INVOKE:
120 break;
121 case INVOKEVIRTUAL:
122 case INVOKEINTERFACE: {
123 assert(method == NULL || !method->is_static(), "cannot call static method with invokeinterface");
124 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
125 call->set_destination(SharedRuntime::get_resolve_virtual_call_stub());
126 _instructions->relocate(call->instruction_address(), virtual_call_Relocation::spec(_invoke_mark_pc));
127 break;
128 }
129 case INVOKESTATIC: {
130 assert(method == NULL || method->is_static(), "cannot call non-static method with invokestatic");
131 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
132 call->set_destination(SharedRuntime::get_resolve_static_call_stub());
133 _instructions->relocate(call->instruction_address(), relocInfo::static_call_type);
134 break;
135 }
136 case INVOKESPECIAL: {
137 assert(method == NULL || !method->is_static(), "cannot call static method with invokespecial");
138 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
139 call->set_destination(SharedRuntime::get_resolve_opt_virtual_call_stub());
140 _instructions->relocate(call->instruction_address(), relocInfo::opt_virtual_call_type);
141 break;
142 }
143 default:
144 fatal("invalid _next_call_type value");
145 break;
146 }
147 }
148
149 void CodeInstaller::pd_relocate_poll(address pc, jint mark) {
150 switch (mark) {
151 case POLL_NEAR:
152 fatal("unimplemented");
153 break;
154 case POLL_FAR:
155 _instructions->relocate(pc, relocInfo::poll_type);
156 break;
157 case POLL_RETURN_NEAR:
158 fatal("unimplemented");
159 break;
160 case POLL_RETURN_FAR:
161 _instructions->relocate(pc, relocInfo::poll_return_type);
162 break;
163 default:
164 fatal("invalid mark value");
165 break;
166 }
167 }
168
169 // convert JVMCI register indices (as used in oop maps) to HotSpot registers
170 VMReg CodeInstaller::get_hotspot_reg(jint jvmci_reg) {
171 if (jvmci_reg < RegisterImpl::number_of_registers) {
172 return as_Register(jvmci_reg)->as_VMReg();
173 } else {
174 jint floatRegisterNumber = jvmci_reg - RegisterImpl::number_of_registers;
175 floatRegisterNumber += MAX2(0, floatRegisterNumber-32); // Beginning with f32, only every second register is going to be addressed
176 if (floatRegisterNumber < FloatRegisterImpl::number_of_registers) {
177 return as_FloatRegister(floatRegisterNumber)->as_VMReg();
178 }
179 ShouldNotReachHere();
180 return NULL;
181 }
182 }
183
184 bool CodeInstaller::is_general_purpose_reg(VMReg hotspotRegister) {
185 return !hotspotRegister->is_FloatRegister();
186 }