Always set the sp reg to the cfa for DWARF.

There are a few places where it is assumed that this register is
set to the cfa value when interpreting DWARF information.

Add a testcase for unwinding art_quick_osr_stub on ARM.

Bug: 73954823

Test: Ran libunwindstack/libbacktrace unit tests.
Test: Random debuggerd -b of process on a hikey.
Test: Ran the 137 art test on host.
Change-Id: Ida6ccdc38c3cfeea6b57fe861a0cc127b150b790

1 files changed, 8 insertions, 4 deletions

diff --git a/libunwindstack/include/unwindstack/RegsMips64.h b/libunwindstack/include/unwindstack/RegsMips64.h
index 8c2d443..1de83ea 100644
--- a/libunwindstack/include/unwindstack/RegsMips64.h
+++ b/libunwindstack/include/unwindstack/RegsMips64.h
@@ -34,17 +34,21 @@ class RegsMips64 : public RegsImpl<uint64_t> {
   RegsMips64();
   virtual ~RegsMips64() = default;
 
-  virtual ArchEnum Arch() override final;
+  ArchEnum Arch() override final;
 
   uint64_t GetPcAdjustment(uint64_t rel_pc, Elf* elf) override;
 
-  void SetFromRaw() override;
-
   bool SetPcFromReturnAddress(Memory* process_memory) override;
 
   bool StepIfSignalHandler(uint64_t rel_pc, Elf* elf, Memory* process_memory) override;
 
-  virtual void IterateRegisters(std::function<void(const char*, uint64_t)>) override final;
+  void IterateRegisters(std::function<void(const char*, uint64_t)>) override final;
+
+  uint64_t pc() override;
+  uint64_t sp() override;
+
+  void set_pc(uint64_t pc) override;
+  void set_sp(uint64_t sp) override;
 
   static Regs* Read(void* data);