| // Copyright 2011 Google Inc. All Rights Reserved. |
| |
| #include <stdio.h> |
| |
| #include "UniquePtr.h" |
| #include "class_linker.h" |
| #include "dex_verifier.h" |
| #include "object.h" |
| #include "jni.h" |
| |
| namespace art { |
| |
| #define REG(method, reg_bitmap, reg) \ |
| ( ((reg) < (method)->NumRegisters()) && \ |
| (( *((reg_bitmap) + (reg)/8) >> ((reg) % 8) ) & 0x01) ) |
| |
| #define CHECK_REGS(...) do { \ |
| int t[] = {__VA_ARGS__}; \ |
| int t_size = sizeof(t) / sizeof(*t); \ |
| for (int i = 0; i < t_size; ++i) \ |
| CHECK(REG(m, reg_bitmap, t[i])) << "Error: Reg " << i << " is not in RegisterMap"; \ |
| } while(false) |
| |
| static int gJava_StackWalk_refmap_calls = 0; |
| |
| struct ReferenceMapVisitor : public Thread::StackVisitor { |
| ReferenceMapVisitor() { |
| } |
| |
| void VisitFrame(const Frame& frame, uintptr_t pc) { |
| Method* m = frame.GetMethod(); |
| CHECK(m != NULL); |
| LOG(INFO) << "At " << PrettyMethod(m, false); |
| |
| if (m->IsCalleeSaveMethod() || m->IsNative()) { |
| LOG(WARNING) << "no PC for " << PrettyMethod(m); |
| CHECK_EQ(pc, 0u); |
| return; |
| } |
| verifier::PcToReferenceMap map(m); |
| const uint8_t* reg_bitmap = map.FindBitMap(m->ToDexPC(pc)); |
| String* m_name = m->GetName(); |
| |
| // Given the method name and the number of times the method has been called, |
| // we know the Dex registers with live reference values. Assert that what we |
| // find is what is expected. |
| if (m_name->Equals("f")) { |
| if (gJava_StackWalk_refmap_calls == 1) { |
| CHECK_EQ(1U, m->ToDexPC(pc)); |
| CHECK_REGS(1); |
| } else { |
| CHECK_EQ(gJava_StackWalk_refmap_calls, 2); |
| CHECK_EQ(5U, m->ToDexPC(pc)); |
| CHECK_REGS(1); |
| } |
| } else if (m_name->Equals("g")) { |
| if (gJava_StackWalk_refmap_calls == 1) { |
| CHECK_EQ(0xcU, m->ToDexPC(pc)); |
| CHECK_REGS(0, 2); // Note that v1 is not in the minimal root set |
| } else { |
| CHECK_EQ(gJava_StackWalk_refmap_calls, 2); |
| CHECK_EQ(0xcU, m->ToDexPC(pc)); |
| CHECK_REGS(0, 2); |
| } |
| } else if (m_name->Equals("shlemiel")) { |
| if (gJava_StackWalk_refmap_calls == 1) { |
| CHECK_EQ(0x380U, m->ToDexPC(pc)); |
| CHECK_REGS(2, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 21, 25); |
| } else { |
| CHECK_EQ(gJava_StackWalk_refmap_calls, 2); |
| CHECK_EQ(0x380U, m->ToDexPC(pc)); |
| CHECK_REGS(2, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 21, 25); |
| } |
| } |
| LOG(INFO) << reg_bitmap; |
| } |
| }; |
| |
| extern "C" |
| JNIEXPORT jint JNICALL Java_StackWalk_refmap(JNIEnv* env, jobject thisObj, jint count) { |
| CHECK_EQ(count, 0); |
| gJava_StackWalk_refmap_calls++; |
| |
| // Visitor |
| ReferenceMapVisitor mapper; |
| Thread::Current()->WalkStack(&mapper); |
| |
| return count + 1; |
| } |
| |
| extern "C" |
| JNIEXPORT jint JNICALL Java_StackWalk2_refmap2(JNIEnv* env, jobject thisObj, jint count) { |
| gJava_StackWalk_refmap_calls++; |
| |
| // Visitor |
| ReferenceMapVisitor mapper; |
| Thread::Current()->WalkStack(&mapper); |
| |
| return count + 1; |
| } |
| |
| } |