libunwindstack: add Regs::Clone.

Add a way to copy a Regs object.

Bug: http://b/77296294
Test: libunwindstack_test
Change-Id: I28aff510aa3e1b677d5ae46dc3bfe7652817ce52

7 files changed, 14 insertions, 0 deletions

diff --git a/libunwindstack/include/unwindstack/Regs.h b/libunwindstack/include/unwindstack/Regs.h
index 4bac47313..878ced30c 100644
--- a/libunwindstack/include/unwindstack/Regs.h
+++ b/libunwindstack/include/unwindstack/Regs.h
@@ -73,6 +73,8 @@ class Regs {
 
   uint16_t total_regs() { return total_regs_; }
 
+  virtual Regs* Clone() = 0;
+
   static ArchEnum CurrentArch();
   static Regs* RemoteGet(pid_t pid);
   static Regs* CreateFromUcontext(ArchEnum arch, void* ucontext);
diff --git a/libunwindstack/include/unwindstack/RegsArm.h b/libunwindstack/include/unwindstack/RegsArm.h
index 31e6797fa..44f67443f 100644
--- a/libunwindstack/include/unwindstack/RegsArm.h
+++ b/libunwindstack/include/unwindstack/RegsArm.h
@@ -50,6 +50,8 @@ class RegsArm : public RegsImpl<uint32_t> {
   void set_pc(uint64_t pc) override;
   void set_sp(uint64_t sp) override;
 
+  Regs* Clone() override final;
+
   static Regs* Read(void* data);
 
   static Regs* CreateFromUcontext(void* ucontext);
diff --git a/libunwindstack/include/unwindstack/RegsArm64.h b/libunwindstack/include/unwindstack/RegsArm64.h
index 0c45ebab8..a72f91ff2 100644
--- a/libunwindstack/include/unwindstack/RegsArm64.h
+++ b/libunwindstack/include/unwindstack/RegsArm64.h
@@ -50,6 +50,8 @@ class RegsArm64 : public RegsImpl<uint64_t> {
   void set_pc(uint64_t pc) override;
   void set_sp(uint64_t sp) override;
 
+  Regs* Clone() override final;
+
   static Regs* Read(void* data);
 
   static Regs* CreateFromUcontext(void* ucontext);
diff --git a/libunwindstack/include/unwindstack/RegsMips.h b/libunwindstack/include/unwindstack/RegsMips.h
index 709f9e2c7..c9dd202aa 100644
--- a/libunwindstack/include/unwindstack/RegsMips.h
+++ b/libunwindstack/include/unwindstack/RegsMips.h
@@ -50,6 +50,8 @@ class RegsMips : public RegsImpl<uint32_t> {
   void set_pc(uint64_t pc) override;
   void set_sp(uint64_t sp) override;
 
+  Regs* Clone() override final;
+
   static Regs* Read(void* data);
 
   static Regs* CreateFromUcontext(void* ucontext);
diff --git a/libunwindstack/include/unwindstack/RegsMips64.h b/libunwindstack/include/unwindstack/RegsMips64.h
index 1de83ea9d..7c42812b7 100644
--- a/libunwindstack/include/unwindstack/RegsMips64.h
+++ b/libunwindstack/include/unwindstack/RegsMips64.h
@@ -50,6 +50,8 @@ class RegsMips64 : public RegsImpl<uint64_t> {
   void set_pc(uint64_t pc) override;
   void set_sp(uint64_t sp) override;
 
+  Regs* Clone() override final;
+
   static Regs* Read(void* data);
 
   static Regs* CreateFromUcontext(void* ucontext);
diff --git a/libunwindstack/include/unwindstack/RegsX86.h b/libunwindstack/include/unwindstack/RegsX86.h
index 586c9d85c..d19e4499b 100644
--- a/libunwindstack/include/unwindstack/RegsX86.h
+++ b/libunwindstack/include/unwindstack/RegsX86.h
@@ -53,6 +53,8 @@ class RegsX86 : public RegsImpl<uint32_t> {
   void set_pc(uint64_t pc) override;
   void set_sp(uint64_t sp) override;
 
+  Regs* Clone() override final;
+
   static Regs* Read(void* data);
 
   static Regs* CreateFromUcontext(void* ucontext);
diff --git a/libunwindstack/include/unwindstack/RegsX86_64.h b/libunwindstack/include/unwindstack/RegsX86_64.h
index 061f479a0..dc9a220c3 100644
--- a/libunwindstack/include/unwindstack/RegsX86_64.h
+++ b/libunwindstack/include/unwindstack/RegsX86_64.h
@@ -53,6 +53,8 @@ class RegsX86_64 : public RegsImpl<uint64_t> {
   void set_pc(uint64_t pc) override;
   void set_sp(uint64_t sp) override;
 
+  Regs* Clone() override final;
+
   static Regs* Read(void* data);
 
   static Regs* CreateFromUcontext(void* ucontext);