1 /*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 extern "C" void dvmCompilerTemplateStart(void);
18
19 /*
20 * This file is included by Codegen-armv5te.c, and implements architecture
21 * variant-specific code.
22 */
23
24 /*
25 * Determine the initial instruction set to be used for this trace.
26 * Later components may decide to change this.
27 */
dvmCompilerInstructionSet(void)28 JitInstructionSetType dvmCompilerInstructionSet(void)
29 {
30 return DALVIK_JIT_THUMB;
31 }
32
33 /* First, declare dvmCompiler_TEMPLATE_XXX for each template */
34 #define JIT_TEMPLATE(X) extern "C" void dvmCompiler_TEMPLATE_##X();
35 #include "../../../template/armv5te/TemplateOpList.h"
36 #undef JIT_TEMPLATE
37
38 /* Architecture-specific initializations and checks go here */
dvmCompilerArchVariantInit(void)39 bool dvmCompilerArchVariantInit(void)
40 {
41 int i = 0;
42
43 /*
44 * Then, populate the templateEntryOffsets array with the offsets from the
45 * the dvmCompilerTemplateStart symbol for each template.
46 */
47 #define JIT_TEMPLATE(X) templateEntryOffsets[i++] = \
48 (intptr_t) dvmCompiler_TEMPLATE_##X - (intptr_t) dvmCompilerTemplateStart;
49 #include "../../../template/armv5te/TemplateOpList.h"
50 #undef JIT_TEMPLATE
51
52 /* Target-specific configuration */
53 gDvmJit.jitTableSize = 1 << 9; // 512
54 gDvmJit.jitTableMask = gDvmJit.jitTableSize - 1;
55 gDvmJit.threshold = 200;
56 gDvmJit.codeCacheSize = 512*1024;
57
58 #if defined(WITH_SELF_VERIFICATION)
59 /* Force into blocking mode */
60 gDvmJit.blockingMode = true;
61 gDvm.nativeDebuggerActive = true;
62 #endif
63
64 /* Codegen-specific assumptions */
65 assert(OFFSETOF_MEMBER(ClassObject, vtable) < 128 &&
66 (OFFSETOF_MEMBER(ClassObject, vtable) & 0x3) == 0);
67 assert(OFFSETOF_MEMBER(ArrayObject, length) < 128 &&
68 (OFFSETOF_MEMBER(ArrayObject, length) & 0x3) == 0);
69 assert(OFFSETOF_MEMBER(ArrayObject, contents) < 256);
70
71 /* Up to 5 args are pushed on top of FP - sizeofStackSaveArea */
72 assert(sizeof(StackSaveArea) < 236);
73
74 /*
75 * EA is calculated by doing "Rn + imm5 << 2". Make sure that the last
76 * offset from the struct is less than 128.
77 */
78 if ((offsetof(Thread, jitToInterpEntries) +
79 sizeof(struct JitToInterpEntries)) >= 128) {
80 ALOGE("Thread.jitToInterpEntries size overflow");
81 dvmAbort();
82 }
83
84 /* No method JIT for Thumb backend */
85 gDvmJit.disableOpt |= (1 << kMethodJit);
86
87 // Make sure all threads have current values
88 dvmJitUpdateThreadStateAll();
89
90 return true;
91 }
92
dvmCompilerTargetOptHint(int key)93 int dvmCompilerTargetOptHint(int key)
94 {
95 int res;
96 switch (key) {
97 case kMaxHoistDistance:
98 res = 2;
99 break;
100 default:
101 ALOGE("Unknown target optimization hint key: %d",key);
102 res = 0;
103 }
104 return res;
105 }
106
dvmCompilerGenMemBarrier(CompilationUnit * cUnit,int barrierKind)107 void dvmCompilerGenMemBarrier(CompilationUnit *cUnit, int barrierKind)
108 {
109 #if ANDROID_SMP != 0
110 #error armv5+smp not supported
111 #endif
112 }
113