Fix arm lldb-server on aarch64 device

* Use PTRACE_GETVFPREGS/PTRACE_SETVFPREGS to access the floating point
  registers instead of the old PTRACE_GETFPREGS/PTRACE_SETFPREGS. The
  new call is available since armv5.
* Work around a kernel issue in PTRACE_POKEUSER with reading out the full
  register set, modifying the neccessary value and then writing it back.

llvm-svn: 251111

1 files changed, 11 insertions, 0 deletions

diff --git a/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm.h b/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm.h
index 847edd1db25..611b36ad4db 100644
--- a/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm.h
+++ b/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm.h
@@ -90,6 +90,17 @@ namespace process_linux {
         };
 
     protected:
+        Error
+        DoWriteRegisterValue(uint32_t offset,
+                             const char* reg_name,
+                             const RegisterValue &value) override;
+
+        Error
+        DoReadFPR(void *buf, size_t buf_size) override;
+
+        Error
+        DoWriteFPR(void *buf, size_t buf_size) override;
+
         void*
         GetGPRBuffer() override { return &m_gpr_arm; }