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// 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_vector, reg) \
( ((reg) < (method)->NumRegisters()) && \
(( *((reg_vector) + (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) \
EXPECT_TRUE(REG(m, reg_vector, t[i])) << "Error: Reg " << i << " is not in RegisterMap"; \
} while(false)
// << "Error: Reg " << i << " is not in RegisterMap";
struct ReferenceMap2Visitor : public Thread::StackVisitor {
ReferenceMap2Visitor() {
}
void VisitFrame(const Frame& frame, uintptr_t pc) {
Method* m = frame.GetMethod();
if (!m ||m->IsNative()) {
return;
}
LOG(INFO) << "At " << PrettyMethod(m, false);
art::DexVerifier::RegisterMap* map = new art::DexVerifier::RegisterMap(
m->GetRegisterMapHeader(),
m->GetRegisterMapData());
if (!pc) {
// pc == NULL: m is either a native method or a phony method
return;
}
if (m->IsCalleeSaveMethod()) {
LOG(WARNING) << "no PC for " << PrettyMethod(m);
return;
}
const uint8_t* reg_vector = NULL;
std::string m_name = m->GetName()->ToModifiedUtf8();
// 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.compare("f") == 0) {
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x01U);
if (reg_vector) {
LOG(WARNING) << "Reg1: " << *reg_vector << *(reg_vector+1);
CHECK_REGS(7); //v7: this
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x02U);
if (reg_vector) {
LOG(WARNING) << "Reg2: " << *reg_vector << *(reg_vector+1);
CHECK_REGS(7); //v7: this
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x03U);
if (reg_vector) {
LOG(WARNING) << "Reg3: " << std::hex << reg_vector[0] << reg_vector[1];
CHECK_REGS(7); //v7: this
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x05U);
if (reg_vector) {
LOG(WARNING) << "Reg4: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 7); //v0: x, v7: this
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x06U);
if (reg_vector) {
LOG(WARNING) << "Reg5: " << std::hex << reg_vector[0] << reg_vector[1];
CHECK_REGS(0, 7); //v0: x, v7: this
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x08U);
if (reg_vector) {
LOG(WARNING) << "Reg6: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 2, 7); //v0: x, v2: y, v7: this
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x0bU);
if (reg_vector) {
LOG(WARNING) << "Reg7: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 2, 7); //v0: x, v2: y, v7: this
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x0cU);
if (reg_vector) {
LOG(WARNING) << "Reg8: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 2, 7); //v0: x, v2: y, v7: this
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x38U);
if (reg_vector) {
LOG(WARNING) << "Reg9: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 2, 7); //v0: x, v2: y, v7: this
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x39U);
if (reg_vector) {
LOG(WARNING) << "Reg10: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 2, 7, 1); //v0: x, v2: y, v7: this, v1: ex
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x3aU);
if (reg_vector) {
LOG(WARNING) << "Reg11: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 2, 7, 1); //v0: x, v2: y, v7: this, v1: y
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x16U);
if (reg_vector) {
LOG(WARNING) << "Reg12: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 7, 1); //v0: x, v7: this, v1: y
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x20U);
if (reg_vector) {
LOG(WARNING) << "Reg13: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 7, 1); //v0: x, v7: this, v1: y
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x22U);
if (reg_vector) {
LOG(WARNING) << "Reg14: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 7, 1); //v0: x, v7: this, v1: y
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x25U);
if (reg_vector) {
LOG(WARNING) << "Reg15: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0); //v0: x, v7: this, v1: y
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x26U);
if (reg_vector) {
LOG(WARNING) << "Reg16: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 7, 1); //v0: y, v7: this, v1: y
}
reg_vector = art::DexVerifier::RegisterMapGetLine(map, 0x14U);
if (reg_vector) {
LOG(WARNING) << "Reg17: " << std::hex << *reg_vector << *(reg_vector+1);
CHECK_REGS(0, 7); //v0: y, v7: this
}
}
}
};
extern "C"
JNIEXPORT jint JNICALL Java_ReferenceMap_refmap(JNIEnv* env, jobject thisObj, jint count) {
// Visitor
ReferenceMap2Visitor mapper;
Thread::Current()->WalkStack(&mapper);
return count + 1;
}
}
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