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 * Determine the initial instruction set to be used for this trace.
21 * Later components may decide to change this.
22 */
dvmCompilerInstructionSet(void)23 JitInstructionSetType dvmCompilerInstructionSet(void)
24 {
25 return DALVIK_JIT_THUMB2;
26 }
27
28 /* First, declare dvmCompiler_TEMPLATE_XXX for each template */
29 #define JIT_TEMPLATE(X) extern "C" void dvmCompiler_TEMPLATE_##X();
30 #include "../../../template/armv5te-vfp/TemplateOpList.h"
31 #undef JIT_TEMPLATE
32
33 /* Architecture-specific initializations and checks go here */
dvmCompilerArchVariantInit(void)34 bool dvmCompilerArchVariantInit(void)
35 {
36 int i = 0;
37
38 /*
39 * Then, populate the templateEntryOffsets array with the offsets from the
40 * the dvmCompilerTemplateStart symbol for each template.
41 */
42 #define JIT_TEMPLATE(X) templateEntryOffsets[i++] = \
43 (intptr_t) dvmCompiler_TEMPLATE_##X - (intptr_t) dvmCompilerTemplateStart;
44 #include "../../../template/armv5te-vfp/TemplateOpList.h"
45 #undef JIT_TEMPLATE
46
47 /* Target-specific configuration */
48 gDvmJit.jitTableSize = 1 << 12; // 4096
49 gDvmJit.jitTableMask = gDvmJit.jitTableSize - 1;
50 gDvmJit.threshold = 40;
51 gDvmJit.codeCacheSize = 1024*1024;
52
53 #if defined(WITH_SELF_VERIFICATION)
54 /* Force into blocking */
55 gDvmJit.blockingMode = true;
56 gDvm.nativeDebuggerActive = true;
57 #endif
58
59 /* Codegen-specific assumptions */
60 assert(OFFSETOF_MEMBER(ClassObject, vtable) < 128 &&
61 (OFFSETOF_MEMBER(ClassObject, vtable) & 0x3) == 0);
62 assert(OFFSETOF_MEMBER(ArrayObject, length) < 128 &&
63 (OFFSETOF_MEMBER(ArrayObject, length) & 0x3) == 0);
64 assert(OFFSETOF_MEMBER(ArrayObject, contents) < 256);
65
66 /* Up to 5 args are pushed on top of FP - sizeofStackSaveArea */
67 assert(sizeof(StackSaveArea) < 236);
68
69 /*
70 * EA is calculated by doing "Rn + imm5 << 2". Make sure that the last
71 * offset from the struct is less than 128.
72 */
73 if ((offsetof(Thread, jitToInterpEntries) +
74 sizeof(struct JitToInterpEntries)) >= 128) {
75 ALOGE("Thread.jitToInterpEntries size overflow");
76 dvmAbort();
77 }
78
79 /* FIXME - comment out the following to enable method-based JIT */
80 gDvmJit.disableOpt |= (1 << kMethodJit);
81
82 // Make sure all threads have current values
83 dvmJitUpdateThreadStateAll();
84
85 return true;
86 }
87
dvmCompilerTargetOptHint(int key)88 int dvmCompilerTargetOptHint(int key)
89 {
90 int res;
91 switch (key) {
92 case kMaxHoistDistance:
93 res = 7;
94 break;
95 default:
96 ALOGE("Unknown target optimization hint key: %d",key);
97 res = 0;
98 }
99 return res;
100 }
101
dvmCompilerGenMemBarrier(CompilationUnit * cUnit,int barrierKind)102 void dvmCompilerGenMemBarrier(CompilationUnit *cUnit, int barrierKind)
103 {
104 #if ANDROID_SMP != 0
105 ArmLIR *dmb = newLIR1(cUnit, kThumb2Dmb, barrierKind);
106 dmb->defMask = ENCODE_ALL;
107 #endif
108 }
109