[Lldb-commits] [lldb] 92904cc - [lldb] [gdb-remote] Remove unused arg from GDBRemoteRegisterContext::ReadRegisterBytes()

[Michał Górny via lldb-commits]

Author: Michał Górny
Date: 2021-09-20T10:24:01+02:00
New Revision: 92904cc68fbc1d000387b30accc8b05b3fe95daa

URL: https://github.com/llvm/llvm-project/commit/92904cc68fbc1d000387b30accc8b05b3fe95daa
DIFF: https://github.com/llvm/llvm-project/commit/92904cc68fbc1d000387b30accc8b05b3fe95daa.diff

LOG: [lldb] [gdb-remote] Remove unused arg from GDBRemoteRegisterContext::ReadRegisterBytes()

Differential Revision: https://reviews.llvm.org/D110020

Added: 
    

Modified: 
    lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.cpp
    lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.h

Removed: 
    


################################################################################
diff  --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.cpp
index c050efbc36545..df5d052d2e33b 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.cpp
@@ -90,7 +90,7 @@ const RegisterSet *GDBRemoteRegisterContext::GetRegisterSet(size_t reg_set) {
 bool GDBRemoteRegisterContext::ReadRegister(const RegisterInfo *reg_info,
                                             RegisterValue &value) {
   // Read the register
-  if (ReadRegisterBytes(reg_info, m_reg_data)) {
+  if (ReadRegisterBytes(reg_info)) {
     const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
     if (m_reg_valid[reg] == false)
       return false;
@@ -184,8 +184,7 @@ bool GDBRemoteRegisterContext::GetPrimordialRegister(
   return false;
 }
 
-bool GDBRemoteRegisterContext::ReadRegisterBytes(const RegisterInfo *reg_info,
-                                                 DataExtractor &data) {
+bool GDBRemoteRegisterContext::ReadRegisterBytes(const RegisterInfo *reg_info) {
   ExecutionContext exe_ctx(CalculateThread());
 
   Process *process = exe_ctx.GetProcessPtr();
@@ -279,22 +278,6 @@ bool GDBRemoteRegisterContext::ReadRegisterBytes(const RegisterInfo *reg_info,
       return false;
   }
 
-  if (&data != &m_reg_data) {
-    assert(m_reg_data.GetByteSize() >=
-           reg_info->byte_offset + reg_info->byte_size);
-    // If our register context and our register info disagree, which should
-    // never happen, don't read past the end of the buffer.
-    if (m_reg_data.GetByteSize() < reg_info->byte_offset + reg_info->byte_size)
-      return false;
-
-    // If we aren't extracting into our own buffer (which only happens when
-    // this function is called from ReadRegisterValue(uint32_t, Scalar&)) then
-    // we transfer bytes from our buffer into the data buffer that was passed
-    // in
-
-    data.SetByteOrder(m_reg_data.GetByteOrder());
-    data.SetData(m_reg_data, reg_info->byte_offset, reg_info->byte_size);
-  }
   return true;
 }
 
@@ -526,7 +509,7 @@ bool GDBRemoteRegisterContext::ReadAllRegisterValues(
       if (reg_info
               ->value_regs) // skip registers that are slices of real registers
         continue;
-      ReadRegisterBytes(reg_info, m_reg_data);
+      ReadRegisterBytes(reg_info);
       // ReadRegisterBytes saves the contents of the register in to the
       // m_reg_data buffer
     }

diff  --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.h b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.h
index 18fcb73b9815b..7aef414465126 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.h
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.h
@@ -83,7 +83,7 @@ class GDBRemoteRegisterContext : public RegisterContext {
 protected:
   friend class ThreadGDBRemote;
 
-  bool ReadRegisterBytes(const RegisterInfo *reg_info, DataExtractor &data);
+  bool ReadRegisterBytes(const RegisterInfo *reg_info);
 
   bool WriteRegisterBytes(const RegisterInfo *reg_info, DataExtractor &data,
                           uint32_t data_offset);