Emit CFI for x86 & x86_64 JNI compiler.
Now for host-side x86 & x86_64 ART, we are able to get complete stacktrace with even mixed C/C++ & Java stack frames.
Testing:
1. art/test/run-test --host --gdb [--64] --no-relocate 005
2. In gdb, run 'b art::Class_classForName' which is implementation of a Java native method, then 'r'
3. In gdb, run 'bt'. You should see stack frames down to main()
Change-Id: I2d17e9aa0f6d42d374b5362a15ea35a2fce96302
diff --git a/compiler/utils/x86/assembler_x86.h b/compiler/utils/x86/assembler_x86.h
index ce20768..5c4e34f 100644
--- a/compiler/utils/x86/assembler_x86.h
+++ b/compiler/utils/x86/assembler_x86.h
@@ -571,6 +571,12 @@
// and branch to a ExceptionSlowPath if it is.
void ExceptionPoll(ManagedRegister scratch, size_t stack_adjust) OVERRIDE;
+ void InitializeFrameDescriptionEntry() OVERRIDE;
+ void FinalizeFrameDescriptionEntry() OVERRIDE;
+ std::vector<uint8_t>* GetFrameDescriptionEntry() OVERRIDE {
+ return &cfi_info_;
+ }
+
private:
inline void EmitUint8(uint8_t value);
inline void EmitInt32(int32_t value);
@@ -589,6 +595,9 @@
void EmitGenericShift(int rm, Register reg, const Immediate& imm);
void EmitGenericShift(int rm, Register operand, Register shifter);
+ std::vector<uint8_t> cfi_info_;
+ uint32_t cfi_cfa_offset_, cfi_pc_;
+
DISALLOW_COPY_AND_ASSIGN(X86Assembler);
};