Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1 | // Copyright 2011 Google Inc. All Rights Reserved. |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 2 | |
| 3 | #include "jni_compiler.h" |
| 4 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 5 | #include <sys/mman.h> |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 6 | #include <vector> |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 7 | |
| 8 | #include "assembler.h" |
| 9 | #include "calling_convention.h" |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 10 | #include "constants.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 11 | #include "jni_internal.h" |
| 12 | #include "macros.h" |
| 13 | #include "managed_register.h" |
| 14 | #include "logging.h" |
| 15 | #include "thread.h" |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 16 | #include "UniquePtr.h" |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 17 | |
| 18 | namespace art { |
| 19 | |
Shih-wei Liao | 31384c5 | 2011-09-06 15:27:45 -0700 | [diff] [blame] | 20 | namespace arm { |
| 21 | ByteArray* CreateJniStub(); |
| 22 | } |
| 23 | |
| 24 | namespace x86 { |
| 25 | ByteArray* CreateJniStub(); |
| 26 | } |
| 27 | |
Brian Carlstrom | 1619286 | 2011-09-12 17:50:06 -0700 | [diff] [blame] | 28 | ByteArray* JniCompiler::CreateJniStub(InstructionSet instruction_set) { |
| 29 | switch (instruction_set) { |
| 30 | case kArm: |
| 31 | case kThumb2: |
| 32 | return arm::CreateJniStub(); |
| 33 | case kX86: |
| 34 | return x86::CreateJniStub(); |
| 35 | default: |
| 36 | LOG(FATAL) << "Unknown InstructionSet " << (int) instruction_set; |
| 37 | return NULL; |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | JniCompiler::JniCompiler(InstructionSet insns) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 42 | if (insns == kThumb2) { |
| 43 | // currently only ARM code generation is supported |
| 44 | instruction_set_ = kArm; |
| 45 | } else { |
| 46 | instruction_set_ = insns; |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | JniCompiler::~JniCompiler() {} |
| 51 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 52 | // Generate the JNI bridge for the given method, general contract: |
| 53 | // - Arguments are in the managed runtime format, either on stack or in |
| 54 | // registers, a reference to the method object is supplied as part of this |
| 55 | // convention. |
| 56 | // |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 57 | void JniCompiler::Compile(Method* native_method) { |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 58 | CHECK(native_method->IsNative()); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 59 | |
| 60 | // Calling conventions used to iterate over parameters to method |
| 61 | UniquePtr<JniCallingConvention> jni_conv( |
| 62 | JniCallingConvention::Create(native_method, instruction_set_)); |
| 63 | UniquePtr<ManagedRuntimeCallingConvention> mr_conv( |
| 64 | ManagedRuntimeCallingConvention::Create(native_method, instruction_set_)); |
| 65 | |
| 66 | // Assembler that holds generated instructions |
| 67 | UniquePtr<Assembler> jni_asm(Assembler::Create(instruction_set_)); |
| 68 | #define __ jni_asm-> |
| 69 | |
| 70 | // Offsets into data structures |
| 71 | // TODO: if cross compiling these offsets are for the host not the target |
| 72 | const Offset functions(OFFSETOF_MEMBER(JNIEnvExt, functions)); |
| 73 | const Offset monitor_enter(OFFSETOF_MEMBER(JNINativeInterface, MonitorEnter)); |
| 74 | const Offset monitor_exit(OFFSETOF_MEMBER(JNINativeInterface, MonitorExit)); |
| 75 | |
| 76 | // Cache of IsStatic as we call it often enough |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 77 | const bool is_static = native_method->IsStatic(); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 78 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 79 | // 1. Build the frame saving all callee saves |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 80 | const size_t frame_size(jni_conv->FrameSize()); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 81 | const std::vector<ManagedRegister>& callee_save_regs = jni_conv->CalleeSaveRegisters(); |
| 82 | __ BuildFrame(frame_size, mr_conv->MethodRegister(), callee_save_regs); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 83 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 84 | // 2. Set up the StackIndirectReferenceTable |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 85 | mr_conv->ResetIterator(FrameOffset(frame_size)); |
| 86 | jni_conv->ResetIterator(FrameOffset(0)); |
| 87 | __ StoreImmediateToFrame(jni_conv->SirtNumRefsOffset(), |
| 88 | jni_conv->ReferenceCount(), |
| 89 | mr_conv->InterproceduralScratchRegister()); |
| 90 | __ CopyRawPtrFromThread(jni_conv->SirtLinkOffset(), |
| 91 | Thread::TopSirtOffset(), |
| 92 | mr_conv->InterproceduralScratchRegister()); |
| 93 | __ StoreStackOffsetToThread(Thread::TopSirtOffset(), |
| 94 | jni_conv->SirtOffset(), |
| 95 | mr_conv->InterproceduralScratchRegister()); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 96 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 97 | // 3. Place incoming reference arguments into SIRT |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 98 | jni_conv->Next(); // Skip JNIEnv* |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 99 | // 3.5. Create Class argument for static methods out of passed method |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 100 | if (is_static) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 101 | FrameOffset sirt_offset = jni_conv->CurrentParamSirtEntryOffset(); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 102 | // Check sirt offset is within frame |
| 103 | CHECK_LT(sirt_offset.Uint32Value(), frame_size); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 104 | __ LoadRef(jni_conv->InterproceduralScratchRegister(), |
| 105 | mr_conv->MethodRegister(), Method::DeclaringClassOffset()); |
| 106 | __ VerifyObject(jni_conv->InterproceduralScratchRegister(), false); |
| 107 | __ StoreRef(sirt_offset, jni_conv->InterproceduralScratchRegister()); |
| 108 | jni_conv->Next(); // in SIRT so move to next argument |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 109 | } |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 110 | while (mr_conv->HasNext()) { |
| 111 | CHECK(jni_conv->HasNext()); |
| 112 | bool ref_param = jni_conv->IsCurrentParamAReference(); |
| 113 | CHECK(!ref_param || mr_conv->IsCurrentParamAReference()); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 114 | // References need placing in SIRT and the entry value passing |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 115 | if (ref_param) { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 116 | // Compute SIRT entry, note null is placed in the SIRT but its boxed value |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 117 | // must be NULL |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 118 | FrameOffset sirt_offset = jni_conv->CurrentParamSirtEntryOffset(); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 119 | // Check SIRT offset is within frame |
| 120 | CHECK_LT(sirt_offset.Uint32Value(), frame_size); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 121 | bool input_in_reg = mr_conv->IsCurrentParamInRegister(); |
| 122 | bool input_on_stack = mr_conv->IsCurrentParamOnStack(); |
Shih-wei Liao | 5381cf9 | 2011-07-27 00:28:04 -0700 | [diff] [blame] | 123 | CHECK(input_in_reg || input_on_stack); |
| 124 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 125 | if (input_in_reg) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 126 | ManagedRegister in_reg = mr_conv->CurrentParamRegister(); |
| 127 | __ VerifyObject(in_reg, mr_conv->IsCurrentArgPossiblyNull()); |
| 128 | __ StoreRef(sirt_offset, in_reg); |
Shih-wei Liao | 5381cf9 | 2011-07-27 00:28:04 -0700 | [diff] [blame] | 129 | } else if (input_on_stack) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 130 | FrameOffset in_off = mr_conv->CurrentParamStackOffset(); |
| 131 | __ VerifyObject(in_off, mr_conv->IsCurrentArgPossiblyNull()); |
| 132 | __ CopyRef(sirt_offset, in_off, |
| 133 | mr_conv->InterproceduralScratchRegister()); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 134 | } |
| 135 | } |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 136 | mr_conv->Next(); |
| 137 | jni_conv->Next(); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 138 | } |
| 139 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 140 | // 4. Transition from being in managed to native code. Save the top_of_managed_stack_ |
| 141 | // so that the managed stack can be crawled while in native code. Clear the corresponding |
| 142 | // PC value that has no meaning for the this frame. |
Carl Shapiro | e2d373e | 2011-07-25 15:20:06 -0700 | [diff] [blame] | 143 | // TODO: ensure the transition to native follow a store fence. |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 144 | __ StoreStackPointerToThread(Thread::TopOfManagedStackOffset()); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 145 | __ StoreImmediateToThread(Thread::TopOfManagedStackPcOffset(), 0, |
| 146 | mr_conv->InterproceduralScratchRegister()); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 147 | __ StoreImmediateToThread(Thread::StateOffset(), Thread::kNative, |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 148 | mr_conv->InterproceduralScratchRegister()); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 149 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 150 | // 5. Move frame down to allow space for out going args. Do for as short a |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 151 | // time as possible to aid profiling.. |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 152 | const size_t out_arg_size = jni_conv->OutArgSize(); |
| 153 | __ IncreaseFrameSize(out_arg_size); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 154 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 155 | // 6. Acquire lock for synchronized methods. |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 156 | if (native_method->IsSynchronized()) { |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 157 | // Compute arguments in registers to preserve |
| 158 | mr_conv->ResetIterator(FrameOffset(frame_size + out_arg_size)); |
| 159 | std::vector<ManagedRegister> live_argument_regs; |
| 160 | while (mr_conv->HasNext()) { |
| 161 | if (mr_conv->IsCurrentParamInRegister()) { |
| 162 | live_argument_regs.push_back(mr_conv->CurrentParamRegister()); |
| 163 | } |
| 164 | mr_conv->Next(); |
| 165 | } |
| 166 | |
| 167 | // Copy arguments to preserve to callee save registers |
| 168 | CHECK_LE(live_argument_regs.size(), callee_save_regs.size()); |
| 169 | for (size_t i = 0; i < live_argument_regs.size(); i++) { |
| 170 | __ Move(callee_save_regs.at(i), live_argument_regs.at(i)); |
| 171 | } |
| 172 | |
| 173 | // Get SIRT entry for 1st argument (jclass or this) to be 1st argument to |
| 174 | // monitor enter |
| 175 | mr_conv->ResetIterator(FrameOffset(frame_size + out_arg_size)); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 176 | jni_conv->ResetIterator(FrameOffset(out_arg_size)); |
| 177 | jni_conv->Next(); // Skip JNIEnv* |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 178 | if (is_static) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 179 | FrameOffset sirt_offset = jni_conv->CurrentParamSirtEntryOffset(); |
| 180 | if (jni_conv->IsCurrentParamOnStack()) { |
| 181 | FrameOffset out_off = jni_conv->CurrentParamStackOffset(); |
| 182 | __ CreateSirtEntry(out_off, sirt_offset, |
| 183 | mr_conv->InterproceduralScratchRegister(), |
| 184 | false); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 185 | } else { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 186 | ManagedRegister out_reg = jni_conv->CurrentParamRegister(); |
| 187 | __ CreateSirtEntry(out_reg, sirt_offset, |
| 188 | ManagedRegister::NoRegister(), false); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 189 | } |
| 190 | } else { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 191 | CopyParameter(jni_asm.get(), mr_conv.get(), jni_conv.get(), frame_size, |
| 192 | out_arg_size); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 193 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 194 | |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 195 | // Generate JNIEnv* in place and leave a copy in jni_fns_register |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 196 | jni_conv->ResetIterator(FrameOffset(out_arg_size)); |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 197 | ManagedRegister jni_fns_register = |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 198 | jni_conv->InterproceduralScratchRegister(); |
| 199 | __ LoadRawPtrFromThread(jni_fns_register, Thread::JniEnvOffset()); |
| 200 | SetNativeParameter(jni_asm.get(), jni_conv.get(), jni_fns_register); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 201 | |
Ian Rogers | a04d397 | 2011-08-17 11:33:44 -0700 | [diff] [blame] | 202 | // Call JNIEnv->MonitorEnter(object) |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 203 | __ LoadRawPtr(jni_fns_register, jni_fns_register, functions); |
| 204 | __ Call(jni_fns_register, monitor_enter, |
| 205 | jni_conv->InterproceduralScratchRegister()); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 206 | |
| 207 | // Check for exceptions |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 208 | __ ExceptionPoll(jni_conv->InterproceduralScratchRegister()); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 209 | |
| 210 | // Restore live arguments |
| 211 | for (size_t i = 0; i < live_argument_regs.size(); i++) { |
| 212 | __ Move(live_argument_regs.at(i), callee_save_regs.at(i)); |
| 213 | } |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 214 | } |
| 215 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 216 | // 7. Iterate over arguments placing values from managed calling convention in |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 217 | // to the convention required for a native call (shuffling). For references |
| 218 | // place an index/pointer to the reference after checking whether it is |
| 219 | // NULL (which must be encoded as NULL). |
| 220 | // NB. we do this prior to materializing the JNIEnv* and static's jclass to |
| 221 | // give as many free registers for the shuffle as possible |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 222 | mr_conv->ResetIterator(FrameOffset(frame_size+out_arg_size)); |
Shih-wei Liao | 82da44b | 2011-09-01 00:38:04 -0700 | [diff] [blame] | 223 | uint32_t args_count = 0; |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 224 | while (mr_conv->HasNext()) { |
Shih-wei Liao | 82da44b | 2011-09-01 00:38:04 -0700 | [diff] [blame] | 225 | args_count++; |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 226 | mr_conv->Next(); |
Carl Shapiro | e2d373e | 2011-07-25 15:20:06 -0700 | [diff] [blame] | 227 | } |
Shih-wei Liao | 82da44b | 2011-09-01 00:38:04 -0700 | [diff] [blame] | 228 | |
| 229 | // Do a backward pass over arguments, so that the generated code will be "mov |
| 230 | // R2, R3; mov R1, R2" instead of "mov R1, R2; mov R2, R3." |
| 231 | // TODO: A reverse iterator to improve readability. |
| 232 | for (uint32_t i = 0; i < args_count; ++i) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 233 | mr_conv->ResetIterator(FrameOffset(frame_size + out_arg_size)); |
| 234 | jni_conv->ResetIterator(FrameOffset(out_arg_size)); |
| 235 | jni_conv->Next(); // Skip JNIEnv* |
Shih-wei Liao | 82da44b | 2011-09-01 00:38:04 -0700 | [diff] [blame] | 236 | if (is_static) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 237 | jni_conv->Next(); // Skip Class for now |
Shih-wei Liao | 82da44b | 2011-09-01 00:38:04 -0700 | [diff] [blame] | 238 | } |
| 239 | for (uint32_t j = 0; j < args_count - i - 1; ++j) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 240 | mr_conv->Next(); |
| 241 | jni_conv->Next(); |
Shih-wei Liao | 82da44b | 2011-09-01 00:38:04 -0700 | [diff] [blame] | 242 | } |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 243 | CopyParameter(jni_asm.get(), mr_conv.get(), jni_conv.get(), frame_size, |
| 244 | out_arg_size); |
Shih-wei Liao | 82da44b | 2011-09-01 00:38:04 -0700 | [diff] [blame] | 245 | } |
| 246 | |
Carl Shapiro | e2d373e | 2011-07-25 15:20:06 -0700 | [diff] [blame] | 247 | if (is_static) { |
| 248 | // Create argument for Class |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 249 | mr_conv->ResetIterator(FrameOffset(frame_size+out_arg_size)); |
| 250 | jni_conv->ResetIterator(FrameOffset(out_arg_size)); |
| 251 | jni_conv->Next(); // Skip JNIEnv* |
| 252 | FrameOffset sirt_offset = jni_conv->CurrentParamSirtEntryOffset(); |
| 253 | if (jni_conv->IsCurrentParamOnStack()) { |
| 254 | FrameOffset out_off = jni_conv->CurrentParamStackOffset(); |
| 255 | __ CreateSirtEntry(out_off, sirt_offset, |
| 256 | mr_conv->InterproceduralScratchRegister(), |
| 257 | false); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 258 | } else { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 259 | ManagedRegister out_reg = jni_conv->CurrentParamRegister(); |
| 260 | __ CreateSirtEntry(out_reg, sirt_offset, |
| 261 | ManagedRegister::NoRegister(), false); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 262 | } |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 263 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 264 | // 8. Create 1st argument, the JNI environment ptr |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 265 | jni_conv->ResetIterator(FrameOffset(out_arg_size)); |
| 266 | if (jni_conv->IsCurrentParamInRegister()) { |
| 267 | __ LoadRawPtrFromThread(jni_conv->CurrentParamRegister(), |
| 268 | Thread::JniEnvOffset()); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 269 | } else { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 270 | __ CopyRawPtrFromThread(jni_conv->CurrentParamStackOffset(), |
| 271 | Thread::JniEnvOffset(), |
| 272 | jni_conv->InterproceduralScratchRegister()); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 273 | } |
| 274 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 275 | // 9. Plant call to native code associated with method |
Ian Rogers | ad42e13 | 2011-09-17 20:23:33 -0700 | [diff] [blame] | 276 | if (!jni_conv->IsMethodRegisterClobberedPreCall()) { |
Carl Shapiro | e2d373e | 2011-07-25 15:20:06 -0700 | [diff] [blame] | 277 | // Method register shouldn't have been crushed by setting up outgoing |
| 278 | // arguments |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 279 | __ Call(mr_conv->MethodRegister(), Method::NativeMethodOffset(), |
| 280 | mr_conv->InterproceduralScratchRegister()); |
Carl Shapiro | e2d373e | 2011-07-25 15:20:06 -0700 | [diff] [blame] | 281 | } else { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 282 | __ Call(jni_conv->MethodStackOffset(), Method::NativeMethodOffset(), |
| 283 | mr_conv->InterproceduralScratchRegister()); |
Carl Shapiro | e2d373e | 2011-07-25 15:20:06 -0700 | [diff] [blame] | 284 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 285 | |
| 286 | // 10. Release lock for synchronized methods. |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 287 | if (native_method->IsSynchronized()) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 288 | mr_conv->ResetIterator(FrameOffset(frame_size+out_arg_size)); |
| 289 | jni_conv->ResetIterator(FrameOffset(out_arg_size)); |
| 290 | jni_conv->Next(); // Skip JNIEnv* |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 291 | // Save return value |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 292 | FrameOffset return_save_location = jni_conv->ReturnValueSaveLocation(); |
| 293 | if (jni_conv->SizeOfReturnValue() != 0) { |
| 294 | FrameOffset return_save_location = jni_conv->ReturnValueSaveLocation(); |
Ian Rogers | 4ff5dad | 2011-09-07 13:56:27 -0700 | [diff] [blame] | 295 | CHECK_LT(return_save_location.Uint32Value(), frame_size+out_arg_size); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 296 | __ Store(return_save_location, jni_conv->ReturnRegister(), |
| 297 | jni_conv->SizeOfReturnValue()); |
Ian Rogers | 4ff5dad | 2011-09-07 13:56:27 -0700 | [diff] [blame] | 298 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 299 | // Get SIRT entry for 1st argument |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 300 | if (is_static) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 301 | FrameOffset sirt_offset = jni_conv->CurrentParamSirtEntryOffset(); |
| 302 | if (jni_conv->IsCurrentParamOnStack()) { |
| 303 | FrameOffset out_off = jni_conv->CurrentParamStackOffset(); |
| 304 | __ CreateSirtEntry(out_off, sirt_offset, |
| 305 | mr_conv->InterproceduralScratchRegister(), |
| 306 | false); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 307 | } else { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 308 | ManagedRegister out_reg = jni_conv->CurrentParamRegister(); |
| 309 | __ CreateSirtEntry(out_reg, sirt_offset, |
| 310 | ManagedRegister::NoRegister(), false); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 311 | } |
| 312 | } else { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 313 | CopyParameter(jni_asm.get(), mr_conv.get(), jni_conv.get(), frame_size, |
| 314 | out_arg_size); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 315 | } |
| 316 | // Generate JNIEnv* in place and leave a copy in jni_env_register |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 317 | jni_conv->ResetIterator(FrameOffset(out_arg_size)); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 318 | ManagedRegister jni_env_register = |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 319 | jni_conv->InterproceduralScratchRegister(); |
| 320 | __ LoadRawPtrFromThread(jni_env_register, Thread::JniEnvOffset()); |
| 321 | SetNativeParameter(jni_asm.get(), jni_conv.get(), jni_env_register); |
Ian Rogers | a04d397 | 2011-08-17 11:33:44 -0700 | [diff] [blame] | 322 | // Call JNIEnv->MonitorExit(object) |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 323 | __ LoadRawPtr(jni_env_register, jni_env_register, functions); |
| 324 | __ Call(jni_env_register, monitor_exit, |
| 325 | jni_conv->InterproceduralScratchRegister()); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 326 | // Reload return value |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 327 | if (jni_conv->SizeOfReturnValue() != 0) { |
| 328 | __ Load(jni_conv->ReturnRegister(), return_save_location, |
| 329 | jni_conv->SizeOfReturnValue()); |
Ian Rogers | 4ff5dad | 2011-09-07 13:56:27 -0700 | [diff] [blame] | 330 | } |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 331 | } |
| 332 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 333 | // 11. Release outgoing argument area |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 334 | __ DecreaseFrameSize(out_arg_size); |
| 335 | mr_conv->ResetIterator(FrameOffset(frame_size)); |
| 336 | jni_conv->ResetIterator(FrameOffset(0)); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 337 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 338 | // 12. Transition from being in native to managed code, possibly entering a |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 339 | // safepoint |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 340 | CHECK(!jni_conv->InterproceduralScratchRegister() |
| 341 | .Equals(jni_conv->ReturnRegister())); // don't clobber result |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 342 | // Location to preserve result on slow path, ensuring its within the frame |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 343 | FrameOffset return_save_location = jni_conv->ReturnValueSaveLocation(); |
Ian Rogers | 4ff5dad | 2011-09-07 13:56:27 -0700 | [diff] [blame] | 344 | CHECK(return_save_location.Uint32Value() < frame_size || |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 345 | jni_conv->SizeOfReturnValue() == 0); |
| 346 | __ SuspendPoll(jni_conv->InterproceduralScratchRegister(), |
| 347 | jni_conv->ReturnRegister(), return_save_location, |
| 348 | jni_conv->SizeOfReturnValue()); |
| 349 | __ ExceptionPoll(jni_conv->InterproceduralScratchRegister()); |
| 350 | __ StoreImmediateToThread(Thread::StateOffset(), Thread::kRunnable, |
| 351 | jni_conv->InterproceduralScratchRegister()); |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 352 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 353 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 354 | // 13. Place result in correct register possibly loading from indirect |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 355 | // reference table |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 356 | if (jni_conv->IsReturnAReference()) { |
| 357 | __ IncreaseFrameSize(out_arg_size); |
| 358 | jni_conv->ResetIterator(FrameOffset(out_arg_size)); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 359 | |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 360 | jni_conv->Next(); // Skip Thread* argument |
Ian Rogers | 7a99c11 | 2011-09-07 12:48:27 -0700 | [diff] [blame] | 361 | // Pass result as arg2 |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 362 | SetNativeParameter(jni_asm.get(), jni_conv.get(), |
| 363 | jni_conv->ReturnRegister()); |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 364 | |
Ian Rogers | 7a99c11 | 2011-09-07 12:48:27 -0700 | [diff] [blame] | 365 | // Pass Thread* |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 366 | jni_conv->ResetIterator(FrameOffset(out_arg_size)); |
| 367 | if (jni_conv->IsCurrentParamInRegister()) { |
| 368 | __ GetCurrentThread(jni_conv->CurrentParamRegister()); |
Brian Carlstrom | 1619286 | 2011-09-12 17:50:06 -0700 | [diff] [blame] | 369 | __ Call(jni_conv->CurrentParamRegister(), |
| 370 | Offset(OFFSETOF_MEMBER(Thread, pDecodeJObjectInThread)), |
| 371 | jni_conv->InterproceduralScratchRegister()); |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 372 | } else { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 373 | __ GetCurrentThread(jni_conv->CurrentParamStackOffset(), |
| 374 | jni_conv->InterproceduralScratchRegister()); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 375 | __ Call(ThreadOffset(OFFSETOF_MEMBER(Thread, pDecodeJObjectInThread)), |
Brian Carlstrom | 1619286 | 2011-09-12 17:50:06 -0700 | [diff] [blame] | 376 | jni_conv->InterproceduralScratchRegister()); |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 377 | } |
| 378 | |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 379 | __ DecreaseFrameSize(out_arg_size); |
| 380 | jni_conv->ResetIterator(FrameOffset(0)); |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 381 | } |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 382 | __ Move(mr_conv->ReturnRegister(), jni_conv->ReturnRegister()); |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 383 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 384 | // 14. Remove SIRT from thread |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 385 | __ CopyRawPtrToThread(Thread::TopSirtOffset(), jni_conv->SirtLinkOffset(), |
| 386 | jni_conv->InterproceduralScratchRegister()); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 387 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 388 | // 15. Remove activation |
| 389 | if (native_method->IsSynchronized()) { |
| 390 | __ RemoveFrame(frame_size, callee_save_regs); |
| 391 | } else { |
| 392 | __ RemoveFrame(frame_size, std::vector<ManagedRegister>()); |
| 393 | } |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 394 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 395 | // 16. Finalize code generation |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 396 | __ EmitSlowPaths(); |
| 397 | size_t cs = __ CodeSize(); |
Brian Carlstrom | 9baa4ae | 2011-09-01 21:14:14 -0700 | [diff] [blame] | 398 | ByteArray* managed_code = ByteArray::Alloc(cs); |
| 399 | CHECK(managed_code != NULL); |
| 400 | MemoryRegion code(managed_code->GetData(), managed_code->GetLength()); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 401 | __ FinalizeInstructions(code); |
| 402 | native_method->SetCode(managed_code, instruction_set_); |
Shih-wei Liao | d11af15 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 403 | native_method->SetFrameSizeInBytes(frame_size); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 404 | native_method->SetReturnPcOffsetInBytes(jni_conv->ReturnPcOffset()); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 405 | native_method->SetCoreSpillMask(jni_conv->CoreSpillMask()); |
| 406 | native_method->SetFpSpillMask(jni_conv->FpSpillMask()); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 407 | #undef __ |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 408 | } |
| 409 | |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 410 | void JniCompiler::SetNativeParameter(Assembler* jni_asm, |
| 411 | JniCallingConvention* jni_conv, |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 412 | ManagedRegister in_reg) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 413 | #define __ jni_asm-> |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 414 | if (jni_conv->IsCurrentParamOnStack()) { |
| 415 | FrameOffset dest = jni_conv->CurrentParamStackOffset(); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 416 | __ StoreRawPtr(dest, in_reg); |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 417 | } else { |
| 418 | if (!jni_conv->CurrentParamRegister().Equals(in_reg)) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 419 | __ Move(jni_conv->CurrentParamRegister(), in_reg); |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 420 | } |
| 421 | } |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 422 | #undef __ |
Shih-wei Liao | 668512a | 2011-09-01 14:18:34 -0700 | [diff] [blame] | 423 | } |
| 424 | |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 425 | // Copy a single parameter from the managed to the JNI calling convention |
| 426 | void JniCompiler::CopyParameter(Assembler* jni_asm, |
| 427 | ManagedRuntimeCallingConvention* mr_conv, |
| 428 | JniCallingConvention* jni_conv, |
| 429 | size_t frame_size, size_t out_arg_size) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 430 | |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 431 | bool input_in_reg = mr_conv->IsCurrentParamInRegister(); |
| 432 | bool output_in_reg = jni_conv->IsCurrentParamInRegister(); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 433 | FrameOffset sirt_offset(0); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 434 | bool null_allowed = false; |
| 435 | bool ref_param = jni_conv->IsCurrentParamAReference(); |
| 436 | CHECK(!ref_param || mr_conv->IsCurrentParamAReference()); |
Ian Rogers | 7a99c11 | 2011-09-07 12:48:27 -0700 | [diff] [blame] | 437 | // input may be in register, on stack or both - but not none! |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 438 | CHECK(input_in_reg || mr_conv->IsCurrentParamOnStack()); |
Ian Rogers | 7a99c11 | 2011-09-07 12:48:27 -0700 | [diff] [blame] | 439 | if (output_in_reg) { // output shouldn't straddle registers and stack |
| 440 | CHECK(!jni_conv->IsCurrentParamOnStack()); |
| 441 | } else { |
| 442 | CHECK(jni_conv->IsCurrentParamOnStack()); |
| 443 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 444 | // References need placing in SIRT and the entry address passing |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 445 | if (ref_param) { |
Ian Rogers | 7a99c11 | 2011-09-07 12:48:27 -0700 | [diff] [blame] | 446 | null_allowed = mr_conv->IsCurrentArgPossiblyNull(); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 447 | // Compute SIRT offset. Note null is placed in the SIRT but the jobject |
| 448 | // passed to the native code must be null (not a pointer into the SIRT |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 449 | // as with regular references). |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 450 | sirt_offset = jni_conv->CurrentParamSirtEntryOffset(); |
| 451 | // Check SIRT offset is within frame. |
| 452 | CHECK_LT(sirt_offset.Uint32Value(), (frame_size+out_arg_size)); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 453 | } |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 454 | #define __ jni_asm-> |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 455 | if (input_in_reg && output_in_reg) { |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 456 | ManagedRegister in_reg = mr_conv->CurrentParamRegister(); |
| 457 | ManagedRegister out_reg = jni_conv->CurrentParamRegister(); |
| 458 | if (ref_param) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 459 | __ CreateSirtEntry(out_reg, sirt_offset, in_reg, null_allowed); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 460 | } else { |
Ian Rogers | 7a99c11 | 2011-09-07 12:48:27 -0700 | [diff] [blame] | 461 | if (!mr_conv->IsCurrentParamOnStack()) { |
| 462 | // regular non-straddling move |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 463 | __ Move(out_reg, in_reg); |
Ian Rogers | 7a99c11 | 2011-09-07 12:48:27 -0700 | [diff] [blame] | 464 | } else { |
| 465 | UNIMPLEMENTED(FATAL); // we currently don't expect to see this case |
| 466 | } |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 467 | } |
| 468 | } else if (!input_in_reg && !output_in_reg) { |
| 469 | FrameOffset out_off = jni_conv->CurrentParamStackOffset(); |
| 470 | if (ref_param) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 471 | __ CreateSirtEntry(out_off, sirt_offset, |
| 472 | mr_conv->InterproceduralScratchRegister(), |
| 473 | null_allowed); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 474 | } else { |
| 475 | FrameOffset in_off = mr_conv->CurrentParamStackOffset(); |
| 476 | size_t param_size = mr_conv->CurrentParamSize(); |
| 477 | CHECK_EQ(param_size, jni_conv->CurrentParamSize()); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 478 | __ Copy(out_off, in_off, mr_conv->InterproceduralScratchRegister(), |
| 479 | param_size); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 480 | } |
| 481 | } else if (!input_in_reg && output_in_reg) { |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 482 | FrameOffset in_off = mr_conv->CurrentParamStackOffset(); |
| 483 | ManagedRegister out_reg = jni_conv->CurrentParamRegister(); |
| 484 | // Check that incoming stack arguments are above the current stack frame. |
| 485 | CHECK_GT(in_off.Uint32Value(), frame_size); |
| 486 | if (ref_param) { |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 487 | __ CreateSirtEntry(out_reg, sirt_offset, |
| 488 | ManagedRegister::NoRegister(), null_allowed); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 489 | } else { |
| 490 | unsigned int param_size = mr_conv->CurrentParamSize(); |
| 491 | CHECK_EQ(param_size, jni_conv->CurrentParamSize()); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 492 | __ Load(out_reg, in_off, param_size); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 493 | } |
| 494 | } else { |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 495 | CHECK(input_in_reg && !output_in_reg); |
| 496 | ManagedRegister in_reg = mr_conv->CurrentParamRegister(); |
| 497 | FrameOffset out_off = jni_conv->CurrentParamStackOffset(); |
| 498 | // Check outgoing argument is within frame |
| 499 | CHECK_LT(out_off.Uint32Value(), frame_size); |
| 500 | if (ref_param) { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 501 | // TODO: recycle value in in_reg rather than reload from SIRT |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 502 | __ CreateSirtEntry(out_off, sirt_offset, |
| 503 | mr_conv->InterproceduralScratchRegister(), |
| 504 | null_allowed); |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 505 | } else { |
| 506 | size_t param_size = mr_conv->CurrentParamSize(); |
| 507 | CHECK_EQ(param_size, jni_conv->CurrentParamSize()); |
Ian Rogers | 7a99c11 | 2011-09-07 12:48:27 -0700 | [diff] [blame] | 508 | if (!mr_conv->IsCurrentParamOnStack()) { |
| 509 | // regular non-straddling store |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 510 | __ Store(out_off, in_reg, param_size); |
Ian Rogers | 7a99c11 | 2011-09-07 12:48:27 -0700 | [diff] [blame] | 511 | } else { |
| 512 | // store where input straddles registers and stack |
| 513 | CHECK_EQ(param_size, 8u); |
| 514 | FrameOffset in_off = mr_conv->CurrentParamStackOffset(); |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 515 | __ StoreSpanning(out_off, in_reg, in_off, |
| 516 | mr_conv->InterproceduralScratchRegister()); |
Ian Rogers | 7a99c11 | 2011-09-07 12:48:27 -0700 | [diff] [blame] | 517 | } |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 518 | } |
| 519 | } |
Ian Rogers | 2c8f653 | 2011-09-02 17:16:34 -0700 | [diff] [blame] | 520 | #undef __ |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 521 | } |
| 522 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 523 | } // namespace art |