https://github.com/mchoo7 updated 
https://github.com/llvm/llvm-project/pull/180624

>From db6a12e5df4fc36120d05fb636178481c61cf30a Mon Sep 17 00:00:00 2001
From: Minsoo Choo <[email protected]>
Date: Mon, 9 Feb 2026 16:01:51 -0500
Subject: [PATCH] [lldb][NativeRegisterContext] Rename to x86 for shared files

Signed-off-by: Minsoo Choo <[email protected]>
---
 .../Plugins/Process/FreeBSD/CMakeLists.txt    |   2 +-
 ...p => NativeRegisterContextFreeBSD_x86.cpp} |  56 ++--
 ...4.h => NativeRegisterContextFreeBSD_x86.h} |  19 +-
 .../Plugins/Process/Linux/CMakeLists.txt      |   2 +-
 ...cpp => NativeRegisterContextLinux_x86.cpp} | 265 +++++++++++-------
 ..._64.h => NativeRegisterContextLinux_x86.h} |  15 +-
 .../Plugins/Process/NetBSD/CMakeLists.txt     |   2 +-
 ...pp => NativeRegisterContextNetBSD_x86.cpp} |  60 ++--
 ...64.h => NativeRegisterContextNetBSD_x86.h} |  21 +-
 .../Plugins/Process/elf-core/CMakeLists.txt   |   4 +-
 ...4.cpp => RegisterContextLinuxCore_x86.cpp} |  12 +-
 ...86_64.h => RegisterContextLinuxCore_x86.h} |  14 +-
 ...4.cpp => RegisterContextPOSIXCore_x86.cpp} |  32 +--
 ...86_64.h => RegisterContextPOSIXCore_x86.h} |  12 +-
 .../Process/elf-core/ThreadElfCore.cpp        |  12 +-
 .../Process/minidump/ThreadMinidump.cpp       |   6 +-
 16 files changed, 289 insertions(+), 245 deletions(-)
 rename 
lldb/source/Plugins/Process/FreeBSD/{NativeRegisterContextFreeBSD_x86_64.cpp => 
NativeRegisterContextFreeBSD_x86.cpp} (92%)
 rename 
lldb/source/Plugins/Process/FreeBSD/{NativeRegisterContextFreeBSD_x86_64.h => 
NativeRegisterContextFreeBSD_x86.h} (81%)
 rename 
lldb/source/Plugins/Process/Linux/{NativeRegisterContextLinux_x86_64.cpp => 
NativeRegisterContextLinux_x86.cpp} (81%)
 rename lldb/source/Plugins/Process/Linux/{NativeRegisterContextLinux_x86_64.h 
=> NativeRegisterContextLinux_x86.h} (89%)
 rename 
lldb/source/Plugins/Process/NetBSD/{NativeRegisterContextNetBSD_x86_64.cpp => 
NativeRegisterContextNetBSD_x86.cpp} (91%)
 rename 
lldb/source/Plugins/Process/NetBSD/{NativeRegisterContextNetBSD_x86_64.h => 
NativeRegisterContextNetBSD_x86.h} (80%)
 rename 
lldb/source/Plugins/Process/elf-core/{RegisterContextLinuxCore_x86_64.cpp => 
RegisterContextLinuxCore_x86.cpp} (96%)
 rename lldb/source/Plugins/Process/elf-core/{RegisterContextLinuxCore_x86_64.h 
=> RegisterContextLinuxCore_x86.h} (76%)
 rename 
lldb/source/Plugins/Process/elf-core/{RegisterContextPOSIXCore_x86_64.cpp => 
RegisterContextPOSIXCore_x86.cpp} (69%)
 rename lldb/source/Plugins/Process/elf-core/{RegisterContextPOSIXCore_x86_64.h 
=> RegisterContextPOSIXCore_x86.h} (87%)

diff --git a/lldb/source/Plugins/Process/FreeBSD/CMakeLists.txt 
b/lldb/source/Plugins/Process/FreeBSD/CMakeLists.txt
index 8574df58b4ada..559e6ff0dd570 100644
--- a/lldb/source/Plugins/Process/FreeBSD/CMakeLists.txt
+++ b/lldb/source/Plugins/Process/FreeBSD/CMakeLists.txt
@@ -4,7 +4,7 @@ add_lldb_library(lldbPluginProcessFreeBSD
   NativeRegisterContextFreeBSD_arm.cpp
   NativeRegisterContextFreeBSD_arm64.cpp
   NativeRegisterContextFreeBSD_powerpc.cpp
-  NativeRegisterContextFreeBSD_x86_64.cpp
+  NativeRegisterContextFreeBSD_x86.cpp
   NativeThreadFreeBSD.cpp
 
   LINK_COMPONENTS
diff --git 
a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.cpp 
b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86.cpp
similarity index 92%
rename from 
lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.cpp
rename to 
lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86.cpp
index f4cbd705ff1ee..0167a3fb7746a 100644
--- 
a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.cpp
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86.cpp
@@ -1,4 +1,4 @@
-//===-- NativeRegisterContextFreeBSD_x86_64.cpp 
---------------------------===//
+//===-- NativeRegisterContextFreeBSD_x86.cpp 
------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -8,7 +8,7 @@
 
 #if defined(__i386__) || defined(__x86_64__)
 
-#include "NativeRegisterContextFreeBSD_x86_64.h"
+#include "NativeRegisterContextFreeBSD_x86.h"
 
 // clang-format off
 #include <x86/fpu.h>
@@ -238,10 +238,10 @@ static const RegisterSet 
g_reg_sets_x86_64[k_num_register_sets] = {
 NativeRegisterContextFreeBSD *
 NativeRegisterContextFreeBSD::CreateHostNativeRegisterContextFreeBSD(
     const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread) {
-  return new NativeRegisterContextFreeBSD_x86_64(target_arch, native_thread);
+  return new NativeRegisterContextFreeBSD_x86(target_arch, native_thread);
 }
 
-// NativeRegisterContextFreeBSD_x86_64 members.
+// NativeRegisterContextFreeBSD_x86 members.
 
 static RegisterInfoInterface *
 CreateRegisterInfoInterface(const ArchSpec &target_arch) {
@@ -257,7 +257,7 @@ CreateRegisterInfoInterface(const ArchSpec &target_arch) {
   }
 }
 
-NativeRegisterContextFreeBSD_x86_64::NativeRegisterContextFreeBSD_x86_64(
+NativeRegisterContextFreeBSD_x86::NativeRegisterContextFreeBSD_x86(
     const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread)
     : NativeRegisterContextRegisterInfo(
           native_thread, CreateRegisterInfoInterface(target_arch)),
@@ -284,12 +284,12 @@ 
NativeRegisterContextFreeBSD_x86_64::NativeRegisterContextFreeBSD_x86_64(
                               .byte_offset;
 }
 
-uint32_t NativeRegisterContextFreeBSD_x86_64::GetRegisterSetCount() const {
+uint32_t NativeRegisterContextFreeBSD_x86::GetRegisterSetCount() const {
   return k_num_register_sets;
 }
 
 const RegisterSet *
-NativeRegisterContextFreeBSD_x86_64::GetRegisterSet(uint32_t set_index) const {
+NativeRegisterContextFreeBSD_x86::GetRegisterSet(uint32_t set_index) const {
   switch (GetRegisterInfoInterface().GetTargetArchitecture().GetMachine()) {
   case llvm::Triple::x86:
     return &g_reg_sets_i386[set_index];
@@ -300,8 +300,8 @@ 
NativeRegisterContextFreeBSD_x86_64::GetRegisterSet(uint32_t set_index) const {
   }
 }
 
-std::optional<NativeRegisterContextFreeBSD_x86_64::RegSetKind>
-NativeRegisterContextFreeBSD_x86_64::GetSetForNativeRegNum(
+std::optional<NativeRegisterContextFreeBSD_x86::RegSetKind>
+NativeRegisterContextFreeBSD_x86::GetSetForNativeRegNum(
     uint32_t reg_num) const {
   switch (GetRegisterInfoInterface().GetTargetArchitecture().GetMachine()) {
   case llvm::Triple::x86:
@@ -339,7 +339,7 @@ NativeRegisterContextFreeBSD_x86_64::GetSetForNativeRegNum(
   llvm_unreachable("Register does not belong to any register set");
 }
 
-Status NativeRegisterContextFreeBSD_x86_64::ReadRegisterSet(RegSetKind set) {
+Status NativeRegisterContextFreeBSD_x86::ReadRegisterSet(RegSetKind set) {
   switch (set) {
   case GPRegSet:
     return NativeProcessFreeBSD::PtraceWrapper(PT_GETREGS, m_thread.GetID(),
@@ -377,10 +377,10 @@ Status 
NativeRegisterContextFreeBSD_x86_64::ReadRegisterSet(RegSetKind set) {
                                                m_xsave.data(), m_xsave.size());
   }
   }
-  llvm_unreachable("NativeRegisterContextFreeBSD_x86_64::ReadRegisterSet");
+  llvm_unreachable("NativeRegisterContextFreeBSD_x86::ReadRegisterSet");
 }
 
-Status NativeRegisterContextFreeBSD_x86_64::WriteRegisterSet(RegSetKind set) {
+Status NativeRegisterContextFreeBSD_x86::WriteRegisterSet(RegSetKind set) {
   switch (set) {
   case GPRegSet:
     return NativeProcessFreeBSD::PtraceWrapper(PT_SETREGS, m_thread.GetID(),
@@ -403,12 +403,12 @@ Status 
NativeRegisterContextFreeBSD_x86_64::WriteRegisterSet(RegSetKind set) {
     return NativeProcessFreeBSD::PtraceWrapper(PT_SETXSTATE, GetProcessPid(),
                                                m_xsave.data(), m_xsave.size());
   }
-  llvm_unreachable("NativeRegisterContextFreeBSD_x86_64::WriteRegisterSet");
+  llvm_unreachable("NativeRegisterContextFreeBSD_x86::WriteRegisterSet");
 }
 
 Status
-NativeRegisterContextFreeBSD_x86_64::ReadRegister(const RegisterInfo *reg_info,
-                                                  RegisterValue &reg_value) {
+NativeRegisterContextFreeBSD_x86::ReadRegister(const RegisterInfo *reg_info,
+                                               RegisterValue &reg_value) {
   Status error;
 
   if (!reg_info) {
@@ -473,7 +473,7 @@ NativeRegisterContextFreeBSD_x86_64::ReadRegister(const 
RegisterInfo *reg_info,
   return error;
 }
 
-Status NativeRegisterContextFreeBSD_x86_64::WriteRegister(
+Status NativeRegisterContextFreeBSD_x86::WriteRegister(
     const RegisterInfo *reg_info, const RegisterValue &reg_value) {
 
   Status error;
@@ -539,7 +539,7 @@ Status NativeRegisterContextFreeBSD_x86_64::WriteRegister(
   return WriteRegisterSet(set);
 }
 
-Status NativeRegisterContextFreeBSD_x86_64::ReadAllRegisterValues(
+Status NativeRegisterContextFreeBSD_x86::ReadAllRegisterValues(
     lldb::WritableDataBufferSP &data_sp) {
   Status error;
 
@@ -555,20 +555,20 @@ Status 
NativeRegisterContextFreeBSD_x86_64::ReadAllRegisterValues(
   return error;
 }
 
-Status NativeRegisterContextFreeBSD_x86_64::WriteAllRegisterValues(
+Status NativeRegisterContextFreeBSD_x86::WriteAllRegisterValues(
     const lldb::DataBufferSP &data_sp) {
   Status error;
 
   if (!data_sp) {
     error = Status::FromErrorStringWithFormat(
-        "NativeRegisterContextFreeBSD_x86_64::%s invalid data_sp provided",
+        "NativeRegisterContextFreeBSD_x86::%s invalid data_sp provided",
         __FUNCTION__);
     return error;
   }
 
   if (data_sp->GetByteSize() != REG_CONTEXT_SIZE) {
     error = Status::FromErrorStringWithFormat(
-        "NativeRegisterContextFreeBSD_x86_64::%s data_sp contained mismatched "
+        "NativeRegisterContextFreeBSD_x86::%s data_sp contained mismatched "
         "data size, expected %zu, actual %" PRIu64,
         __FUNCTION__, REG_CONTEXT_SIZE, data_sp->GetByteSize());
     return error;
@@ -577,7 +577,7 @@ Status 
NativeRegisterContextFreeBSD_x86_64::WriteAllRegisterValues(
   const uint8_t *src = data_sp->GetBytes();
   if (src == nullptr) {
     error = Status::FromErrorStringWithFormat(
-        "NativeRegisterContextFreeBSD_x86_64::%s "
+        "NativeRegisterContextFreeBSD_x86::%s "
         "DataBuffer::GetBytes() returned a null "
         "pointer",
         __FUNCTION__);
@@ -593,9 +593,9 @@ Status 
NativeRegisterContextFreeBSD_x86_64::WriteAllRegisterValues(
   return error;
 }
 
-llvm::Error NativeRegisterContextFreeBSD_x86_64::CopyHardwareWatchpointsFrom(
+llvm::Error NativeRegisterContextFreeBSD_x86::CopyHardwareWatchpointsFrom(
     NativeRegisterContextFreeBSD &source) {
-  auto &r_source = static_cast<NativeRegisterContextFreeBSD_x86_64 &>(source);
+  auto &r_source = static_cast<NativeRegisterContextFreeBSD_x86 &>(source);
   // NB: This implicitly reads the whole dbreg set.
   RegisterValue dr7;
   Status res = r_source.ReadRegister(GetDR(7), dr7);
@@ -611,8 +611,8 @@ llvm::Error 
NativeRegisterContextFreeBSD_x86_64::CopyHardwareWatchpointsFrom(
 }
 
 uint8_t *
-NativeRegisterContextFreeBSD_x86_64::GetOffsetRegSetData(RegSetKind set,
-                                                         size_t reg_offset) {
+NativeRegisterContextFreeBSD_x86::GetOffsetRegSetData(RegSetKind set,
+                                                      size_t reg_offset) {
   uint8_t *base;
   switch (set) {
   case GPRegSet:
@@ -633,8 +633,8 @@ 
NativeRegisterContextFreeBSD_x86_64::GetOffsetRegSetData(RegSetKind set,
   return base + (reg_offset - m_regset_offsets[set]);
 }
 
-std::optional<NativeRegisterContextFreeBSD_x86_64::YMMSplitPtr>
-NativeRegisterContextFreeBSD_x86_64::GetYMMSplitReg(uint32_t reg) {
+std::optional<NativeRegisterContextFreeBSD_x86::YMMSplitPtr>
+NativeRegisterContextFreeBSD_x86::GetYMMSplitReg(uint32_t reg) {
   uint32_t offset = m_xsave_offsets[YMMRegSet];
   if (offset == LLDB_INVALID_XSAVE_OFFSET)
     return std::nullopt;
@@ -657,4 +657,4 @@ 
NativeRegisterContextFreeBSD_x86_64::GetYMMSplitReg(uint32_t reg) {
   return YMMSplitPtr{&fpreg->sv_xmm[reg_index], &ymmreg[reg_index]};
 }
 
-#endif // defined(__x86_64__)
+#endif // defined(__i386__) || defined(__x86_64__)
diff --git 
a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.h 
b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86.h
similarity index 81%
rename from 
lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.h
rename to lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86.h
index 8546bcb7a378b..0d8b6c3c9dcf6 100644
--- a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.h
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86.h
@@ -1,4 +1,4 @@
-//===-- NativeRegisterContextFreeBSD_x86_64.h -------------------*- C++ 
-*-===//
+//===-- NativeRegisterContextFreeBSD_x86.h ----------------------*- C++ 
-*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -8,8 +8,8 @@
 
 #if defined(__i386__) || defined(__x86_64__)
 
-#ifndef lldb_NativeRegisterContextFreeBSD_x86_64_h
-#define lldb_NativeRegisterContextFreeBSD_x86_64_h
+#ifndef lldb_NativeRegisterContextFreeBSD_x86_h
+#define lldb_NativeRegisterContextFreeBSD_x86_h
 
 // clang-format off
 #include <sys/param.h>
@@ -33,12 +33,11 @@ namespace process_freebsd {
 
 class NativeProcessFreeBSD;
 
-class NativeRegisterContextFreeBSD_x86_64
-    : public NativeRegisterContextFreeBSD,
-      public NativeRegisterContextDBReg_x86 {
+class NativeRegisterContextFreeBSD_x86 : public NativeRegisterContextFreeBSD,
+                                         public NativeRegisterContextDBReg_x86 
{
 public:
-  NativeRegisterContextFreeBSD_x86_64(const ArchSpec &target_arch,
-                                      NativeThreadFreeBSD &native_thread);
+  NativeRegisterContextFreeBSD_x86(const ArchSpec &target_arch,
+                                   NativeThreadFreeBSD &native_thread);
   uint32_t GetRegisterSetCount() const override;
 
   const RegisterSet *GetRegisterSet(uint32_t set_index) const override;
@@ -92,6 +91,6 @@ class NativeRegisterContextFreeBSD_x86_64
 } // namespace process_freebsd
 } // namespace lldb_private
 
-#endif // #ifndef lldb_NativeRegisterContextFreeBSD_x86_64_h
+#endif // #ifndef lldb_NativeRegisterContextFreeBSD_x86_h
 
-#endif // defined(__x86_64__)
+#endif // defined(__i386__) || defined(__x86_64__)
diff --git a/lldb/source/Plugins/Process/Linux/CMakeLists.txt 
b/lldb/source/Plugins/Process/Linux/CMakeLists.txt
index bb69016702cdf..ce624a5211b05 100644
--- a/lldb/source/Plugins/Process/Linux/CMakeLists.txt
+++ b/lldb/source/Plugins/Process/Linux/CMakeLists.txt
@@ -13,7 +13,7 @@ add_lldb_library(lldbPluginProcessLinux
   NativeRegisterContextLinux_ppc64le.cpp
   NativeRegisterContextLinux_riscv64.cpp
   NativeRegisterContextLinux_s390x.cpp
-  NativeRegisterContextLinux_x86_64.cpp
+  NativeRegisterContextLinux_x86.cpp
   NativeThreadLinux.cpp
   Perf.cpp
   Procfs.cpp
diff --git 
a/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86_64.cpp 
b/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86.cpp
similarity index 81%
rename from 
lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86_64.cpp
rename to lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86.cpp
index 77260c7382cf7..773e730949c2e 100644
--- a/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86_64.cpp
+++ b/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86.cpp
@@ -1,4 +1,4 @@
-//===-- NativeRegisterContextLinux_x86_64.cpp 
-----------------------------===//
+//===-- NativeRegisterContextLinux_x86.cpp 
--------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -8,7 +8,7 @@
 
 #if defined(__i386__) || defined(__x86_64__)
 
-#include "NativeRegisterContextLinux_x86_64.h"
+#include "NativeRegisterContextLinux_x86.h"
 #include "Plugins/Process/Linux/NativeThreadLinux.h"
 #include "Plugins/Process/Utility/RegisterContextLinux_i386.h"
 #include "Plugins/Process/Utility/RegisterContextLinux_x86_64.h"
@@ -24,11 +24,9 @@
 // Newer toolchains define __get_cpuid_count in cpuid.h, but some
 // older-but-still-supported ones (e.g. gcc 5.4.0) don't, so we
 // define it locally here, following the definition in clang/lib/Headers.
-static inline int get_cpuid_count(unsigned int __leaf,
-                                  unsigned int __subleaf,
+static inline int get_cpuid_count(unsigned int __leaf, unsigned int __subleaf,
                                   unsigned int *__eax, unsigned int *__ebx,
-                                  unsigned int *__ecx, unsigned int *__edx)
-{
+                                  unsigned int *__ecx, unsigned int *__edx) {
   unsigned int __max_leaf = __get_cpuid_max(__leaf & 0x80000000, nullptr);
 
   if (__max_leaf == 0 || __max_leaf < __leaf)
@@ -89,8 +87,8 @@ static_assert((sizeof(g_avx_regnums_i386) / 
sizeof(g_avx_regnums_i386[0])) -
 
 // x64 32-bit MPX registers.
 static const uint32_t g_mpx_regnums_i386[] = {
-    lldb_bnd0_i386,     lldb_bnd1_i386, lldb_bnd2_i386, lldb_bnd3_i386,
-    lldb_bndcfgu_i386,  lldb_bndstatus_i386,
+    lldb_bnd0_i386,     lldb_bnd1_i386,    lldb_bnd2_i386,
+    lldb_bnd3_i386,     lldb_bndcfgu_i386, lldb_bndstatus_i386,
     LLDB_INVALID_REGNUM // register sets need to end with this flag
 };
 static_assert((sizeof(g_mpx_regnums_i386) / sizeof(g_mpx_regnums_i386[0])) -
@@ -100,15 +98,40 @@ static_assert((sizeof(g_mpx_regnums_i386) / 
sizeof(g_mpx_regnums_i386[0])) -
 
 // x86 64-bit general purpose registers.
 static const uint32_t g_gpr_regnums_x86_64[] = {
-    x86_64_with_base::lldb_rax,    x86_64_with_base::lldb_rbx,    
x86_64_with_base::lldb_rcx, x86_64_with_base::lldb_rdx,
-    x86_64_with_base::lldb_rdi,    x86_64_with_base::lldb_rsi,    
x86_64_with_base::lldb_rbp, x86_64_with_base::lldb_rsp,
-    x86_64_with_base::lldb_r8,     x86_64_with_base::lldb_r9,     
x86_64_with_base::lldb_r10, x86_64_with_base::lldb_r11,
-    x86_64_with_base::lldb_r12,    x86_64_with_base::lldb_r13,    
x86_64_with_base::lldb_r14, x86_64_with_base::lldb_r15,
-    x86_64_with_base::lldb_rip,    x86_64_with_base::lldb_rflags, 
x86_64_with_base::lldb_cs,  x86_64_with_base::lldb_fs,
-    x86_64_with_base::lldb_gs,     x86_64_with_base::lldb_ss,     
x86_64_with_base::lldb_fs_base, x86_64_with_base::lldb_gs_base,
-    x86_64_with_base::lldb_ds,  x86_64_with_base::lldb_es,
-    x86_64_with_base::lldb_eax,    x86_64_with_base::lldb_ebx,    
x86_64_with_base::lldb_ecx, x86_64_with_base::lldb_edx,
-    x86_64_with_base::lldb_edi,    x86_64_with_base::lldb_esi,    
x86_64_with_base::lldb_ebp, x86_64_with_base::lldb_esp,
+    x86_64_with_base::lldb_rax,
+    x86_64_with_base::lldb_rbx,
+    x86_64_with_base::lldb_rcx,
+    x86_64_with_base::lldb_rdx,
+    x86_64_with_base::lldb_rdi,
+    x86_64_with_base::lldb_rsi,
+    x86_64_with_base::lldb_rbp,
+    x86_64_with_base::lldb_rsp,
+    x86_64_with_base::lldb_r8,
+    x86_64_with_base::lldb_r9,
+    x86_64_with_base::lldb_r10,
+    x86_64_with_base::lldb_r11,
+    x86_64_with_base::lldb_r12,
+    x86_64_with_base::lldb_r13,
+    x86_64_with_base::lldb_r14,
+    x86_64_with_base::lldb_r15,
+    x86_64_with_base::lldb_rip,
+    x86_64_with_base::lldb_rflags,
+    x86_64_with_base::lldb_cs,
+    x86_64_with_base::lldb_fs,
+    x86_64_with_base::lldb_gs,
+    x86_64_with_base::lldb_ss,
+    x86_64_with_base::lldb_fs_base,
+    x86_64_with_base::lldb_gs_base,
+    x86_64_with_base::lldb_ds,
+    x86_64_with_base::lldb_es,
+    x86_64_with_base::lldb_eax,
+    x86_64_with_base::lldb_ebx,
+    x86_64_with_base::lldb_ecx,
+    x86_64_with_base::lldb_edx,
+    x86_64_with_base::lldb_edi,
+    x86_64_with_base::lldb_esi,
+    x86_64_with_base::lldb_ebp,
+    x86_64_with_base::lldb_esp,
     x86_64_with_base::lldb_r8d,  // Low 32 bits or r8
     x86_64_with_base::lldb_r9d,  // Low 32 bits or r9
     x86_64_with_base::lldb_r10d, // Low 32 bits or r10
@@ -117,8 +140,14 @@ static const uint32_t g_gpr_regnums_x86_64[] = {
     x86_64_with_base::lldb_r13d, // Low 32 bits or r13
     x86_64_with_base::lldb_r14d, // Low 32 bits or r14
     x86_64_with_base::lldb_r15d, // Low 32 bits or r15
-    x86_64_with_base::lldb_ax,     x86_64_with_base::lldb_bx,     
x86_64_with_base::lldb_cx,  x86_64_with_base::lldb_dx,
-    x86_64_with_base::lldb_di,     x86_64_with_base::lldb_si,     
x86_64_with_base::lldb_bp,  x86_64_with_base::lldb_sp,
+    x86_64_with_base::lldb_ax,
+    x86_64_with_base::lldb_bx,
+    x86_64_with_base::lldb_cx,
+    x86_64_with_base::lldb_dx,
+    x86_64_with_base::lldb_di,
+    x86_64_with_base::lldb_si,
+    x86_64_with_base::lldb_bp,
+    x86_64_with_base::lldb_sp,
     x86_64_with_base::lldb_r8w,  // Low 16 bits or r8
     x86_64_with_base::lldb_r9w,  // Low 16 bits or r9
     x86_64_with_base::lldb_r10w, // Low 16 bits or r10
@@ -127,18 +156,27 @@ static const uint32_t g_gpr_regnums_x86_64[] = {
     x86_64_with_base::lldb_r13w, // Low 16 bits or r13
     x86_64_with_base::lldb_r14w, // Low 16 bits or r14
     x86_64_with_base::lldb_r15w, // Low 16 bits or r15
-    x86_64_with_base::lldb_ah,     x86_64_with_base::lldb_bh,     
x86_64_with_base::lldb_ch,  x86_64_with_base::lldb_dh,
-    x86_64_with_base::lldb_al,     x86_64_with_base::lldb_bl,     
x86_64_with_base::lldb_cl,  x86_64_with_base::lldb_dl,
-    x86_64_with_base::lldb_dil,    x86_64_with_base::lldb_sil,    
x86_64_with_base::lldb_bpl, x86_64_with_base::lldb_spl,
-    x86_64_with_base::lldb_r8l,    // Low 8 bits or r8
-    x86_64_with_base::lldb_r9l,    // Low 8 bits or r9
-    x86_64_with_base::lldb_r10l,   // Low 8 bits or r10
-    x86_64_with_base::lldb_r11l,   // Low 8 bits or r11
-    x86_64_with_base::lldb_r12l,   // Low 8 bits or r12
-    x86_64_with_base::lldb_r13l,   // Low 8 bits or r13
-    x86_64_with_base::lldb_r14l,   // Low 8 bits or r14
-    x86_64_with_base::lldb_r15l,   // Low 8 bits or r15
-    LLDB_INVALID_REGNUM // register sets need to end with this flag
+    x86_64_with_base::lldb_ah,
+    x86_64_with_base::lldb_bh,
+    x86_64_with_base::lldb_ch,
+    x86_64_with_base::lldb_dh,
+    x86_64_with_base::lldb_al,
+    x86_64_with_base::lldb_bl,
+    x86_64_with_base::lldb_cl,
+    x86_64_with_base::lldb_dl,
+    x86_64_with_base::lldb_dil,
+    x86_64_with_base::lldb_sil,
+    x86_64_with_base::lldb_bpl,
+    x86_64_with_base::lldb_spl,
+    x86_64_with_base::lldb_r8l,  // Low 8 bits or r8
+    x86_64_with_base::lldb_r9l,  // Low 8 bits or r9
+    x86_64_with_base::lldb_r10l, // Low 8 bits or r10
+    x86_64_with_base::lldb_r11l, // Low 8 bits or r11
+    x86_64_with_base::lldb_r12l, // Low 8 bits or r12
+    x86_64_with_base::lldb_r13l, // Low 8 bits or r13
+    x86_64_with_base::lldb_r14l, // Low 8 bits or r14
+    x86_64_with_base::lldb_r15l, // Low 8 bits or r15
+    LLDB_INVALID_REGNUM          // register sets need to end with this flag
 };
 static_assert((sizeof(g_gpr_regnums_x86_64) / sizeof(g_gpr_regnums_x86_64[0])) 
-
                       1 ==
@@ -147,21 +185,28 @@ static_assert((sizeof(g_gpr_regnums_x86_64) / 
sizeof(g_gpr_regnums_x86_64[0])) -
 
 // x86 64-bit floating point registers.
 static const uint32_t g_fpu_regnums_x86_64[] = {
-    x86_64_with_base::lldb_fctrl,  x86_64_with_base::lldb_fstat, 
x86_64_with_base::lldb_ftag,
-    x86_64_with_base::lldb_fop,    x86_64_with_base::lldb_fiseg, 
x86_64_with_base::lldb_fioff,
-    x86_64_with_base::lldb_fip,    x86_64_with_base::lldb_foseg, 
x86_64_with_base::lldb_fooff,
-    x86_64_with_base::lldb_fdp,    x86_64_with_base::lldb_mxcsr, 
x86_64_with_base::lldb_mxcsrmask,
-    x86_64_with_base::lldb_st0,    x86_64_with_base::lldb_st1,   
x86_64_with_base::lldb_st2,
-    x86_64_with_base::lldb_st3,    x86_64_with_base::lldb_st4,   
x86_64_with_base::lldb_st5,
-    x86_64_with_base::lldb_st6,    x86_64_with_base::lldb_st7,   
x86_64_with_base::lldb_mm0,
-    x86_64_with_base::lldb_mm1,    x86_64_with_base::lldb_mm2,   
x86_64_with_base::lldb_mm3,
-    x86_64_with_base::lldb_mm4,    x86_64_with_base::lldb_mm5,   
x86_64_with_base::lldb_mm6,
-    x86_64_with_base::lldb_mm7,    x86_64_with_base::lldb_xmm0,  
x86_64_with_base::lldb_xmm1,
-    x86_64_with_base::lldb_xmm2,   x86_64_with_base::lldb_xmm3,  
x86_64_with_base::lldb_xmm4,
-    x86_64_with_base::lldb_xmm5,   x86_64_with_base::lldb_xmm6,  
x86_64_with_base::lldb_xmm7,
-    x86_64_with_base::lldb_xmm8,   x86_64_with_base::lldb_xmm9,  
x86_64_with_base::lldb_xmm10,
-    x86_64_with_base::lldb_xmm11,  x86_64_with_base::lldb_xmm12, 
x86_64_with_base::lldb_xmm13,
-    x86_64_with_base::lldb_xmm14,  x86_64_with_base::lldb_xmm15,
+    x86_64_with_base::lldb_fctrl, x86_64_with_base::lldb_fstat,
+    x86_64_with_base::lldb_ftag,  x86_64_with_base::lldb_fop,
+    x86_64_with_base::lldb_fiseg, x86_64_with_base::lldb_fioff,
+    x86_64_with_base::lldb_fip,   x86_64_with_base::lldb_foseg,
+    x86_64_with_base::lldb_fooff, x86_64_with_base::lldb_fdp,
+    x86_64_with_base::lldb_mxcsr, x86_64_with_base::lldb_mxcsrmask,
+    x86_64_with_base::lldb_st0,   x86_64_with_base::lldb_st1,
+    x86_64_with_base::lldb_st2,   x86_64_with_base::lldb_st3,
+    x86_64_with_base::lldb_st4,   x86_64_with_base::lldb_st5,
+    x86_64_with_base::lldb_st6,   x86_64_with_base::lldb_st7,
+    x86_64_with_base::lldb_mm0,   x86_64_with_base::lldb_mm1,
+    x86_64_with_base::lldb_mm2,   x86_64_with_base::lldb_mm3,
+    x86_64_with_base::lldb_mm4,   x86_64_with_base::lldb_mm5,
+    x86_64_with_base::lldb_mm6,   x86_64_with_base::lldb_mm7,
+    x86_64_with_base::lldb_xmm0,  x86_64_with_base::lldb_xmm1,
+    x86_64_with_base::lldb_xmm2,  x86_64_with_base::lldb_xmm3,
+    x86_64_with_base::lldb_xmm4,  x86_64_with_base::lldb_xmm5,
+    x86_64_with_base::lldb_xmm6,  x86_64_with_base::lldb_xmm7,
+    x86_64_with_base::lldb_xmm8,  x86_64_with_base::lldb_xmm9,
+    x86_64_with_base::lldb_xmm10, x86_64_with_base::lldb_xmm11,
+    x86_64_with_base::lldb_xmm12, x86_64_with_base::lldb_xmm13,
+    x86_64_with_base::lldb_xmm14, x86_64_with_base::lldb_xmm15,
     LLDB_INVALID_REGNUM // register sets need to end with this flag
 };
 static_assert((sizeof(g_fpu_regnums_x86_64) / sizeof(g_fpu_regnums_x86_64[0])) 
-
@@ -171,10 +216,14 @@ static_assert((sizeof(g_fpu_regnums_x86_64) / 
sizeof(g_fpu_regnums_x86_64[0])) -
 
 // x86 64-bit AVX registers.
 static const uint32_t g_avx_regnums_x86_64[] = {
-    x86_64_with_base::lldb_ymm0,   x86_64_with_base::lldb_ymm1,  
x86_64_with_base::lldb_ymm2,  x86_64_with_base::lldb_ymm3,
-    x86_64_with_base::lldb_ymm4,   x86_64_with_base::lldb_ymm5,  
x86_64_with_base::lldb_ymm6,  x86_64_with_base::lldb_ymm7,
-    x86_64_with_base::lldb_ymm8,   x86_64_with_base::lldb_ymm9,  
x86_64_with_base::lldb_ymm10, x86_64_with_base::lldb_ymm11,
-    x86_64_with_base::lldb_ymm12,  x86_64_with_base::lldb_ymm13, 
x86_64_with_base::lldb_ymm14, x86_64_with_base::lldb_ymm15,
+    x86_64_with_base::lldb_ymm0,  x86_64_with_base::lldb_ymm1,
+    x86_64_with_base::lldb_ymm2,  x86_64_with_base::lldb_ymm3,
+    x86_64_with_base::lldb_ymm4,  x86_64_with_base::lldb_ymm5,
+    x86_64_with_base::lldb_ymm6,  x86_64_with_base::lldb_ymm7,
+    x86_64_with_base::lldb_ymm8,  x86_64_with_base::lldb_ymm9,
+    x86_64_with_base::lldb_ymm10, x86_64_with_base::lldb_ymm11,
+    x86_64_with_base::lldb_ymm12, x86_64_with_base::lldb_ymm13,
+    x86_64_with_base::lldb_ymm14, x86_64_with_base::lldb_ymm15,
     LLDB_INVALID_REGNUM // register sets need to end with this flag
 };
 static_assert((sizeof(g_avx_regnums_x86_64) / sizeof(g_avx_regnums_x86_64[0])) 
-
@@ -184,8 +233,12 @@ static_assert((sizeof(g_avx_regnums_x86_64) / 
sizeof(g_avx_regnums_x86_64[0])) -
 
 // x86 64-bit MPX registers.
 static const uint32_t g_mpx_regnums_x86_64[] = {
-    x86_64_with_base::lldb_bnd0,    x86_64_with_base::lldb_bnd1,    
x86_64_with_base::lldb_bnd2,
-    x86_64_with_base::lldb_bnd3,    x86_64_with_base::lldb_bndcfgu, 
x86_64_with_base::lldb_bndstatus,
+    x86_64_with_base::lldb_bnd0,
+    x86_64_with_base::lldb_bnd1,
+    x86_64_with_base::lldb_bnd2,
+    x86_64_with_base::lldb_bnd3,
+    x86_64_with_base::lldb_bndcfgu,
+    x86_64_with_base::lldb_bndstatus,
     LLDB_INVALID_REGNUM // register sets need to end with this flag
 };
 static_assert((sizeof(g_mpx_regnums_x86_64) / sizeof(g_mpx_regnums_x86_64[0])) 
-
@@ -204,7 +257,7 @@ static const RegisterSet 
g_reg_sets_i386[k_num_register_sets] = {
      g_fpu_regnums_i386},
     {"Advanced Vector Extensions", "avx", k_num_avx_registers_i386,
      g_avx_regnums_i386},
-    { "Memory Protection Extensions", "mpx", k_num_mpx_registers_i386,
+    {"Memory Protection Extensions", "mpx", k_num_mpx_registers_i386,
      g_mpx_regnums_i386}};
 
 // Register sets for x86 64-bit.
@@ -215,8 +268,8 @@ static const RegisterSet 
g_reg_sets_x86_64[k_num_register_sets] = {
      g_fpu_regnums_x86_64},
     {"Advanced Vector Extensions", "avx", 
x86_64_with_base::k_num_avx_registers,
      g_avx_regnums_x86_64},
-    { "Memory Protection Extensions", "mpx", 
x86_64_with_base::k_num_mpx_registers,
-     g_mpx_regnums_x86_64}};
+    {"Memory Protection Extensions", "mpx",
+     x86_64_with_base::k_num_mpx_registers, g_mpx_regnums_x86_64}};
 
 #define REG_CONTEXT_SIZE (GetRegisterInfoInterface().GetGPRSize() + 
sizeof(FPR))
 
@@ -253,7 +306,7 @@ std::unique_ptr<NativeRegisterContextLinux>
 NativeRegisterContextLinux::CreateHostNativeRegisterContextLinux(
     const ArchSpec &target_arch, NativeThreadLinux &native_thread) {
   return std::unique_ptr<NativeRegisterContextLinux>(
-      new NativeRegisterContextLinux_x86_64(target_arch, native_thread));
+      new NativeRegisterContextLinux_x86(target_arch, native_thread));
 }
 
 llvm::Expected<ArchSpec>
@@ -262,7 +315,7 @@ 
NativeRegisterContextLinux::DetermineArchitecture(lldb::tid_t tid) {
       tid, RegisterContextLinux_x86_64::GetGPRSizeStatic());
 }
 
-// NativeRegisterContextLinux_x86_64 members.
+// NativeRegisterContextLinux_x86 members.
 
 static std::unique_ptr<RegisterContextLinux_x86>
 CreateRegisterInfoInterface(const ArchSpec &target_arch) {
@@ -295,7 +348,7 @@ static std::size_t GetXSTATESize() {
   return std::max<std::size_t>(ecx, sizeof(FPR));
 }
 
-NativeRegisterContextLinux_x86_64::NativeRegisterContextLinux_x86_64(
+NativeRegisterContextLinux_x86::NativeRegisterContextLinux_x86(
     const ArchSpec &target_arch, NativeThreadProtocol &native_thread)
     : NativeRegisterContextRegisterInfo(
           native_thread, CreateRegisterInfoInterface(target_arch).release()),
@@ -375,7 +428,7 @@ 
NativeRegisterContextLinux_x86_64::NativeRegisterContextLinux_x86_64(
 
 // CONSIDER after local and llgs debugging are merged, register set support can
 // be moved into a base x86-64 class with IsRegisterSetAvailable made virtual.
-uint32_t NativeRegisterContextLinux_x86_64::GetRegisterSetCount() const {
+uint32_t NativeRegisterContextLinux_x86::GetRegisterSetCount() const {
   uint32_t sets = 0;
   for (uint32_t set_index = 0; set_index < k_num_register_sets; ++set_index) {
     if (IsRegisterSetAvailable(set_index))
@@ -385,7 +438,7 @@ uint32_t 
NativeRegisterContextLinux_x86_64::GetRegisterSetCount() const {
   return sets;
 }
 
-uint32_t NativeRegisterContextLinux_x86_64::GetUserRegisterCount() const {
+uint32_t NativeRegisterContextLinux_x86::GetUserRegisterCount() const {
   uint32_t count = 0;
   for (uint32_t set_index = 0; set_index < k_num_register_sets; ++set_index) {
     const RegisterSet *set = GetRegisterSet(set_index);
@@ -396,7 +449,7 @@ uint32_t 
NativeRegisterContextLinux_x86_64::GetUserRegisterCount() const {
 }
 
 const RegisterSet *
-NativeRegisterContextLinux_x86_64::GetRegisterSet(uint32_t set_index) const {
+NativeRegisterContextLinux_x86::GetRegisterSet(uint32_t set_index) const {
   if (!IsRegisterSetAvailable(set_index))
     return nullptr;
 
@@ -414,8 +467,8 @@ NativeRegisterContextLinux_x86_64::GetRegisterSet(uint32_t 
set_index) const {
 }
 
 Status
-NativeRegisterContextLinux_x86_64::ReadRegister(const RegisterInfo *reg_info,
-                                                RegisterValue &reg_value) {
+NativeRegisterContextLinux_x86::ReadRegister(const RegisterInfo *reg_info,
+                                             RegisterValue &reg_value) {
   Status error;
 
   if (!reg_info) {
@@ -566,8 +619,7 @@ NativeRegisterContextLinux_x86_64::ReadRegister(const 
RegisterInfo *reg_info,
   return error;
 }
 
-void NativeRegisterContextLinux_x86_64::UpdateXSTATEforWrite(
-    uint32_t reg_index) {
+void NativeRegisterContextLinux_x86::UpdateXSTATEforWrite(uint32_t reg_index) {
   XSAVE_HDR::XFeature &xstate_bv = m_xstate->xsave.header.xstate_bv;
   if (IsFPR(reg_index)) {
     // IsFPR considers both %st and %xmm registers as floating point, but these
@@ -582,8 +634,9 @@ void 
NativeRegisterContextLinux_x86_64::UpdateXSTATEforWrite(
   }
 }
 
-Status NativeRegisterContextLinux_x86_64::WriteRegister(
-    const RegisterInfo *reg_info, const RegisterValue &reg_value) {
+Status
+NativeRegisterContextLinux_x86::WriteRegister(const RegisterInfo *reg_info,
+                                              const RegisterValue &reg_value) {
   assert(reg_info && "reg_info is null");
 
   const uint32_t reg_index = reg_info->kinds[lldb::eRegisterKindLLDB];
@@ -697,7 +750,7 @@ Status NativeRegisterContextLinux_x86_64::WriteRegister(
       "write strategy unknown");
 }
 
-Status NativeRegisterContextLinux_x86_64::ReadAllRegisterValues(
+Status NativeRegisterContextLinux_x86::ReadAllRegisterValues(
     lldb::WritableDataBufferSP &data_sp) {
   Status error;
 
@@ -724,7 +777,7 @@ Status 
NativeRegisterContextLinux_x86_64::ReadAllRegisterValues(
            ++reg) {
         if (!CopyXSTATEtoYMM(reg, byte_order)) {
           error = Status::FromErrorStringWithFormat(
-              "NativeRegisterContextLinux_x86_64::%s "
+              "NativeRegisterContextLinux_x86::%s "
               "CopyXSTATEtoYMM() failed for reg num "
               "%" PRIu32,
               __FUNCTION__, reg);
@@ -738,7 +791,7 @@ Status 
NativeRegisterContextLinux_x86_64::ReadAllRegisterValues(
            ++reg) {
         if (!CopyXSTATEtoMPX(reg)) {
           error = Status::FromErrorStringWithFormat(
-              "NativeRegisterContextLinux_x86_64::%s "
+              "NativeRegisterContextLinux_x86::%s "
               "CopyXSTATEtoMPX() failed for reg num "
               "%" PRIu32,
               __FUNCTION__, reg);
@@ -767,13 +820,13 @@ Status 
NativeRegisterContextLinux_x86_64::ReadAllRegisterValues(
   return error;
 }
 
-Status NativeRegisterContextLinux_x86_64::WriteAllRegisterValues(
+Status NativeRegisterContextLinux_x86::WriteAllRegisterValues(
     const lldb::DataBufferSP &data_sp) {
   Status error;
 
   if (!data_sp) {
     error = Status::FromErrorStringWithFormat(
-        "NativeRegisterContextLinux_x86_64::%s invalid data_sp provided",
+        "NativeRegisterContextLinux_x86::%s invalid data_sp provided",
         __FUNCTION__);
     return error;
   }
@@ -788,7 +841,7 @@ Status 
NativeRegisterContextLinux_x86_64::WriteAllRegisterValues(
   const uint8_t *src = data_sp->GetBytes();
   if (src == nullptr) {
     error = Status::FromErrorStringWithFormat(
-        "NativeRegisterContextLinux_x86_64::%s "
+        "NativeRegisterContextLinux_x86::%s "
         "DataBuffer::GetBytes() returned a null "
         "pointer",
         __FUNCTION__);
@@ -819,7 +872,7 @@ Status 
NativeRegisterContextLinux_x86_64::WriteAllRegisterValues(
            ++reg) {
         if (!CopyYMMtoXSTATE(reg, byte_order)) {
           error = Status::FromErrorStringWithFormat(
-              "NativeRegisterContextLinux_x86_64::%s "
+              "NativeRegisterContextLinux_x86::%s "
               "CopyYMMtoXSTATE() failed for reg num "
               "%" PRIu32,
               __FUNCTION__, reg);
@@ -833,7 +886,7 @@ Status 
NativeRegisterContextLinux_x86_64::WriteAllRegisterValues(
            ++reg) {
         if (!CopyMPXtoXSTATE(reg)) {
           error = Status::FromErrorStringWithFormat(
-              "NativeRegisterContextLinux_x86_64::%s "
+              "NativeRegisterContextLinux_x86::%s "
               "CopyMPXtoXSTATE() failed for reg num "
               "%" PRIu32,
               __FUNCTION__, reg);
@@ -846,10 +899,10 @@ Status 
NativeRegisterContextLinux_x86_64::WriteAllRegisterValues(
   return error;
 }
 
-bool NativeRegisterContextLinux_x86_64::IsCPUFeatureAvailable(
+bool NativeRegisterContextLinux_x86::IsCPUFeatureAvailable(
     RegSet feature_code) const {
   if (m_xstate_type == XStateType::Invalid) {
-    if (const_cast<NativeRegisterContextLinux_x86_64 
*>(this)->ReadFPR().Fail())
+    if (const_cast<NativeRegisterContextLinux_x86 *>(this)->ReadFPR().Fail())
       return false;
   }
   switch (feature_code) {
@@ -860,7 +913,7 @@ bool 
NativeRegisterContextLinux_x86_64::IsCPUFeatureAvailable(
                     // reading in the XCR0 area of XSAVE.
     if ((m_xstate->xsave.i387.xcr0 & mask_XSTATE_AVX) == mask_XSTATE_AVX)
       return true;
-     break;
+    break;
   case RegSet::mpx: // Check if CPU has MPX and if there is kernel support, by
                     // reading in the XCR0 area of XSAVE.
     if ((m_xstate->xsave.i387.xcr0 & mask_XSTATE_MPX) == mask_XSTATE_MPX)
@@ -870,7 +923,7 @@ bool 
NativeRegisterContextLinux_x86_64::IsCPUFeatureAvailable(
   return false;
 }
 
-bool NativeRegisterContextLinux_x86_64::IsRegisterSetAvailable(
+bool NativeRegisterContextLinux_x86::IsRegisterSetAvailable(
     uint32_t set_index) const {
   uint32_t num_sets = k_num_register_sets - k_num_extended_register_sets;
 
@@ -886,22 +939,21 @@ bool 
NativeRegisterContextLinux_x86_64::IsRegisterSetAvailable(
   return false;
 }
 
-bool NativeRegisterContextLinux_x86_64::IsGPR(uint32_t reg_index) const {
+bool NativeRegisterContextLinux_x86::IsGPR(uint32_t reg_index) const {
   // GPRs come first.
   return reg_index <= m_reg_info.last_gpr;
 }
 
-bool NativeRegisterContextLinux_x86_64::IsFPR(uint32_t reg_index) const {
+bool NativeRegisterContextLinux_x86::IsFPR(uint32_t reg_index) const {
   return (m_reg_info.first_fpr <= reg_index &&
           reg_index <= m_reg_info.last_fpr);
 }
 
-bool NativeRegisterContextLinux_x86_64::IsDR(uint32_t reg_index) const {
-  return (m_reg_info.first_dr <= reg_index &&
-          reg_index <= m_reg_info.last_dr);
+bool NativeRegisterContextLinux_x86::IsDR(uint32_t reg_index) const {
+  return (m_reg_info.first_dr <= reg_index && reg_index <= m_reg_info.last_dr);
 }
 
-Status NativeRegisterContextLinux_x86_64::WriteFPR() {
+Status NativeRegisterContextLinux_x86::WriteFPR() {
   switch (m_xstate_type) {
   case XStateType::FXSAVE:
     return WriteRegisterSet(
@@ -914,46 +966,44 @@ Status NativeRegisterContextLinux_x86_64::WriteFPR() {
   }
 }
 
-bool NativeRegisterContextLinux_x86_64::IsAVX(uint32_t reg_index) const {
+bool NativeRegisterContextLinux_x86::IsAVX(uint32_t reg_index) const {
   if (!IsCPUFeatureAvailable(RegSet::avx))
     return false;
   return (m_reg_info.first_ymm <= reg_index &&
           reg_index <= m_reg_info.last_ymm);
 }
 
-bool NativeRegisterContextLinux_x86_64::CopyXSTATEtoYMM(
+bool NativeRegisterContextLinux_x86::CopyXSTATEtoYMM(
     uint32_t reg_index, lldb::ByteOrder byte_order) {
   if (!IsAVX(reg_index))
     return false;
 
   if (byte_order == lldb::eByteOrderLittle) {
     uint32_t reg_no = reg_index - m_reg_info.first_ymm;
-    m_ymm_set.ymm[reg_no] = XStateToYMM(
-        m_xstate->fxsave.xmm[reg_no].bytes,
-        m_xstate->xsave.ymmh[reg_no].bytes);
+    m_ymm_set.ymm[reg_no] = XStateToYMM(m_xstate->fxsave.xmm[reg_no].bytes,
+                                        m_xstate->xsave.ymmh[reg_no].bytes);
     return true;
   }
 
   return false; // unsupported or invalid byte order
 }
 
-bool NativeRegisterContextLinux_x86_64::CopyYMMtoXSTATE(
+bool NativeRegisterContextLinux_x86::CopyYMMtoXSTATE(
     uint32_t reg, lldb::ByteOrder byte_order) {
   if (!IsAVX(reg))
     return false;
 
   if (byte_order == lldb::eByteOrderLittle) {
     uint32_t reg_no = reg - m_reg_info.first_ymm;
-    YMMToXState(m_ymm_set.ymm[reg_no],
-        m_xstate->fxsave.xmm[reg_no].bytes,
-        m_xstate->xsave.ymmh[reg_no].bytes);
+    YMMToXState(m_ymm_set.ymm[reg_no], m_xstate->fxsave.xmm[reg_no].bytes,
+                m_xstate->xsave.ymmh[reg_no].bytes);
     return true;
   }
 
   return false; // unsupported or invalid byte order
 }
 
-void *NativeRegisterContextLinux_x86_64::GetFPRBuffer() {
+void *NativeRegisterContextLinux_x86::GetFPRBuffer() {
   switch (m_xstate_type) {
   case XStateType::FXSAVE:
     return &m_xstate->fxsave;
@@ -964,7 +1014,7 @@ void *NativeRegisterContextLinux_x86_64::GetFPRBuffer() {
   }
 }
 
-size_t NativeRegisterContextLinux_x86_64::GetFPRSize() {
+size_t NativeRegisterContextLinux_x86::GetFPRSize() {
   switch (m_xstate_type) {
   case XStateType::FXSAVE:
     return sizeof(m_xstate->fxsave);
@@ -975,7 +1025,7 @@ size_t NativeRegisterContextLinux_x86_64::GetFPRSize() {
   }
 }
 
-Status NativeRegisterContextLinux_x86_64::ReadFPR() {
+Status NativeRegisterContextLinux_x86::ReadFPR() {
   Status error;
 
   // Probe XSAVE and if it is not supported fall back to FXSAVE.
@@ -996,14 +1046,14 @@ Status NativeRegisterContextLinux_x86_64::ReadFPR() {
   return Status::FromErrorString("Unrecognized FPR type.");
 }
 
-bool NativeRegisterContextLinux_x86_64::IsMPX(uint32_t reg_index) const {
+bool NativeRegisterContextLinux_x86::IsMPX(uint32_t reg_index) const {
   if (!IsCPUFeatureAvailable(RegSet::mpx))
     return false;
   return (m_reg_info.first_mpxr <= reg_index &&
           reg_index <= m_reg_info.last_mpxc);
 }
 
-bool NativeRegisterContextLinux_x86_64::CopyXSTATEtoMPX(uint32_t reg) {
+bool NativeRegisterContextLinux_x86::CopyXSTATEtoMPX(uint32_t reg) {
   if (!IsMPX(reg))
     return false;
 
@@ -1019,7 +1069,7 @@ bool 
NativeRegisterContextLinux_x86_64::CopyXSTATEtoMPX(uint32_t reg) {
   return true;
 }
 
-bool NativeRegisterContextLinux_x86_64::CopyMPXtoXSTATE(uint32_t reg) {
+bool NativeRegisterContextLinux_x86::CopyMPXtoXSTATE(uint32_t reg) {
   if (!IsMPX(reg))
     return false;
 
@@ -1033,15 +1083,14 @@ bool 
NativeRegisterContextLinux_x86_64::CopyMPXtoXSTATE(uint32_t reg) {
   return true;
 }
 
-uint32_t
-NativeRegisterContextLinux_x86_64::GetPtraceOffset(uint32_t reg_index) {
+uint32_t NativeRegisterContextLinux_x86::GetPtraceOffset(uint32_t reg_index) {
   // If register is MPX, remove extra factor from gdb offset
   return GetRegisterInfoAtIndex(reg_index)->byte_offset -
          (IsMPX(reg_index) ? 128 : 0);
 }
 
 std::optional<NativeRegisterContextLinux::SyscallData>
-NativeRegisterContextLinux_x86_64::GetSyscallData() {
+NativeRegisterContextLinux_x86::GetSyscallData() {
   switch (GetRegisterInfoInterface().GetTargetArchitecture().GetMachine()) {
   case llvm::Triple::x86: {
     static const uint8_t Int80[] = {0xcd, 0x80};
@@ -1053,8 +1102,10 @@ NativeRegisterContextLinux_x86_64::GetSyscallData() {
   case llvm::Triple::x86_64: {
     static const uint8_t Syscall[] = {0x0f, 0x05};
     static const uint32_t Args[] = {
-        x86_64_with_base::lldb_rax, x86_64_with_base::lldb_rdi, 
x86_64_with_base::lldb_rsi, x86_64_with_base::lldb_rdx,
-        x86_64_with_base::lldb_r10, x86_64_with_base::lldb_r8,  
x86_64_with_base::lldb_r9};
+        x86_64_with_base::lldb_rax, x86_64_with_base::lldb_rdi,
+        x86_64_with_base::lldb_rsi, x86_64_with_base::lldb_rdx,
+        x86_64_with_base::lldb_r10, x86_64_with_base::lldb_r8,
+        x86_64_with_base::lldb_r9};
     return SyscallData{Syscall, Args, x86_64_with_base::lldb_rax};
   }
   default:
@@ -1063,7 +1114,7 @@ NativeRegisterContextLinux_x86_64::GetSyscallData() {
 }
 
 std::optional<NativeRegisterContextLinux::MmapData>
-NativeRegisterContextLinux_x86_64::GetMmapData() {
+NativeRegisterContextLinux_x86::GetMmapData() {
   switch (GetRegisterInfoInterface().GetTargetArchitecture().GetMachine()) {
   case llvm::Triple::x86:
     return MmapData{192, 91};
@@ -1074,7 +1125,7 @@ NativeRegisterContextLinux_x86_64::GetMmapData() {
   }
 }
 
-const RegisterInfo *NativeRegisterContextLinux_x86_64::GetDR(int num) const {
+const RegisterInfo *NativeRegisterContextLinux_x86::GetDR(int num) const {
   assert(num >= 0 && num <= 7);
   switch (GetRegisterInfoInterface().GetTargetArchitecture().GetMachine()) {
   case llvm::Triple::x86:
diff --git 
a/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86_64.h 
b/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86.h
similarity index 89%
rename from 
lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86_64.h
rename to lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86.h
index 0078f107d46a4..817c042003a94 100644
--- a/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86_64.h
+++ b/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86.h
@@ -1,4 +1,4 @@
-//===-- NativeRegisterContextLinux_x86_64.h ---------------------*- C++ 
-*-===//
+//===-- NativeRegisterContextLinux_x86.h ------------------------*- C++ 
-*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -8,8 +8,8 @@
 
 #if defined(__i386__) || defined(__x86_64__)
 
-#ifndef lldb_NativeRegisterContextLinux_x86_64_h
-#define lldb_NativeRegisterContextLinux_x86_64_h
+#ifndef lldb_NativeRegisterContextLinux_x86_h
+#define lldb_NativeRegisterContextLinux_x86_h
 
 #include "Plugins/Process/Linux/NativeRegisterContextLinux.h"
 #include "Plugins/Process/Utility/NativeRegisterContextDBReg_x86.h"
@@ -24,12 +24,11 @@ namespace process_linux {
 
 class NativeProcessLinux;
 
-class NativeRegisterContextLinux_x86_64
-    : public NativeRegisterContextLinux,
-      public NativeRegisterContextDBReg_x86 {
+class NativeRegisterContextLinux_x86 : public NativeRegisterContextLinux,
+                                       public NativeRegisterContextDBReg_x86 {
 public:
-  NativeRegisterContextLinux_x86_64(const ArchSpec &target_arch,
-                                    NativeThreadProtocol &native_thread);
+  NativeRegisterContextLinux_x86(const ArchSpec &target_arch,
+                                 NativeThreadProtocol &native_thread);
 
   uint32_t GetRegisterSetCount() const override;
 
diff --git a/lldb/source/Plugins/Process/NetBSD/CMakeLists.txt 
b/lldb/source/Plugins/Process/NetBSD/CMakeLists.txt
index f48ea86fb0a3e..438e6b6c2a3c7 100644
--- a/lldb/source/Plugins/Process/NetBSD/CMakeLists.txt
+++ b/lldb/source/Plugins/Process/NetBSD/CMakeLists.txt
@@ -1,7 +1,7 @@
 add_lldb_library(lldbPluginProcessNetBSD
   NativeProcessNetBSD.cpp
   NativeRegisterContextNetBSD.cpp
-  NativeRegisterContextNetBSD_x86_64.cpp
+  NativeRegisterContextNetBSD_x86.cpp
   NativeThreadNetBSD.cpp
 
   LINK_COMPONENTS
diff --git 
a/lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.cpp 
b/lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86.cpp
similarity index 91%
rename from 
lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.cpp
rename to lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86.cpp
index c5c53a9c86401..79f6a9ab1267f 100644
--- a/lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.cpp
+++ b/lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86.cpp
@@ -1,4 +1,4 @@
-//===-- NativeRegisterContextNetBSD_x86_64.cpp 
----------------------------===//
+//===-- NativeRegisterContextNetBSD_x86.cpp 
-------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -8,7 +8,7 @@
 
 #if defined(__i386__) || defined(__x86_64__)
 
-#include "NativeRegisterContextNetBSD_x86_64.h"
+#include "NativeRegisterContextNetBSD_x86.h"
 
 #include "lldb/Host/HostInfo.h"
 #include "lldb/Utility/DataBufferHeap.h"
@@ -245,10 +245,10 @@ static const RegisterSet 
g_reg_sets_x86_64[k_num_register_sets] = {
 NativeRegisterContextNetBSD *
 NativeRegisterContextNetBSD::CreateHostNativeRegisterContextNetBSD(
     const ArchSpec &target_arch, NativeThreadProtocol &native_thread) {
-  return new NativeRegisterContextNetBSD_x86_64(target_arch, native_thread);
+  return new NativeRegisterContextLinux_x86(target_arch, native_thread);
 }
 
-// NativeRegisterContextNetBSD_x86_64 members.
+// NativeRegisterContextLinux_x86 members.
 
 static RegisterInfoInterface *
 CreateRegisterInfoInterface(const ArchSpec &target_arch) {
@@ -264,7 +264,7 @@ CreateRegisterInfoInterface(const ArchSpec &target_arch) {
   }
 }
 
-NativeRegisterContextNetBSD_x86_64::NativeRegisterContextNetBSD_x86_64(
+NativeRegisterContextLinux_x86::NativeRegisterContextLinux_x86(
     const ArchSpec &target_arch, NativeThreadProtocol &native_thread)
     : NativeRegisterContextRegisterInfo(
           native_thread, CreateRegisterInfoInterface(target_arch)),
@@ -291,12 +291,12 @@ 
NativeRegisterContextNetBSD_x86_64::NativeRegisterContextNetBSD_x86_64(
                               .byte_offset;
 }
 
-uint32_t NativeRegisterContextNetBSD_x86_64::GetRegisterSetCount() const {
+uint32_t NativeRegisterContextLinux_x86::GetRegisterSetCount() const {
   return k_num_register_sets;
 }
 
 const RegisterSet *
-NativeRegisterContextNetBSD_x86_64::GetRegisterSet(uint32_t set_index) const {
+NativeRegisterContextLinux_x86::GetRegisterSet(uint32_t set_index) const {
   switch (GetRegisterInfoInterface().GetTargetArchitecture().GetMachine()) {
   case llvm::Triple::x86:
     return &g_reg_sets_i386[set_index];
@@ -307,9 +307,8 @@ NativeRegisterContextNetBSD_x86_64::GetRegisterSet(uint32_t 
set_index) const {
   }
 }
 
-std::optional<NativeRegisterContextNetBSD_x86_64::RegSetKind>
-NativeRegisterContextNetBSD_x86_64::GetSetForNativeRegNum(
-    uint32_t reg_num) const {
+std::optional<NativeRegisterContextLinux_x86::RegSetKind>
+NativeRegisterContextLinux_x86::GetSetForNativeRegNum(uint32_t reg_num) const {
   switch (GetRegisterInfoInterface().GetTargetArchitecture().GetMachine()) {
   case llvm::Triple::x86:
     if (reg_num >= k_first_gpr_i386 && reg_num <= k_last_gpr_i386)
@@ -346,7 +345,7 @@ NativeRegisterContextNetBSD_x86_64::GetSetForNativeRegNum(
   llvm_unreachable("Register does not belong to any register set");
 }
 
-Status NativeRegisterContextNetBSD_x86_64::ReadRegisterSet(RegSetKind set) {
+Status NativeRegisterContextLinux_x86::ReadRegisterSet(RegSetKind set) {
   switch (set) {
   case GPRegSet:
     return DoRegisterSet(PT_GETREGS, m_gpr.data());
@@ -361,10 +360,10 @@ Status 
NativeRegisterContextNetBSD_x86_64::ReadRegisterSet(RegSetKind set) {
     return ret;
   }
   }
-  llvm_unreachable("NativeRegisterContextNetBSD_x86_64::ReadRegisterSet");
+  llvm_unreachable("NativeRegisterContextLinux_x86::ReadRegisterSet");
 }
 
-Status NativeRegisterContextNetBSD_x86_64::WriteRegisterSet(RegSetKind set) {
+Status NativeRegisterContextLinux_x86::WriteRegisterSet(RegSetKind set) {
   switch (set) {
   case GPRegSet:
     return DoRegisterSet(PT_SETREGS, m_gpr.data());
@@ -377,12 +376,12 @@ Status 
NativeRegisterContextNetBSD_x86_64::WriteRegisterSet(RegSetKind set) {
     return DoRegisterSet(PT_SETXSTATE, &iov);
   }
   }
-  llvm_unreachable("NativeRegisterContextNetBSD_x86_64::WriteRegisterSet");
+  llvm_unreachable("NativeRegisterContextLinux_x86::WriteRegisterSet");
 }
 
 Status
-NativeRegisterContextNetBSD_x86_64::ReadRegister(const RegisterInfo *reg_info,
-                                                 RegisterValue &reg_value) {
+NativeRegisterContextLinux_x86::ReadRegister(const RegisterInfo *reg_info,
+                                             RegisterValue &reg_value) {
   Status error;
 
   if (!reg_info) {
@@ -448,8 +447,9 @@ NativeRegisterContextNetBSD_x86_64::ReadRegister(const 
RegisterInfo *reg_info,
   return error;
 }
 
-Status NativeRegisterContextNetBSD_x86_64::WriteRegister(
-    const RegisterInfo *reg_info, const RegisterValue &reg_value) {
+Status
+NativeRegisterContextLinux_x86::WriteRegister(const RegisterInfo *reg_info,
+                                              const RegisterValue &reg_value) {
 
   Status error;
 
@@ -529,7 +529,7 @@ Status NativeRegisterContextNetBSD_x86_64::WriteRegister(
   return WriteRegisterSet(set);
 }
 
-Status NativeRegisterContextNetBSD_x86_64::ReadAllRegisterValues(
+Status NativeRegisterContextLinux_x86::ReadAllRegisterValues(
     lldb::WritableDataBufferSP &data_sp) {
   Status error;
 
@@ -545,20 +545,20 @@ Status 
NativeRegisterContextNetBSD_x86_64::ReadAllRegisterValues(
   return error;
 }
 
-Status NativeRegisterContextNetBSD_x86_64::WriteAllRegisterValues(
+Status NativeRegisterContextLinux_x86::WriteAllRegisterValues(
     const lldb::DataBufferSP &data_sp) {
   Status error;
 
   if (!data_sp) {
     error = Status::FromErrorStringWithFormat(
-        "NativeRegisterContextNetBSD_x86_64::%s invalid data_sp provided",
+        "NativeRegisterContextLinux_x86::%s invalid data_sp provided",
         __FUNCTION__);
     return error;
   }
 
   if (data_sp->GetByteSize() != REG_CONTEXT_SIZE) {
     error = Status::FromErrorStringWithFormat(
-        "NativeRegisterContextNetBSD_x86_64::%s data_sp contained mismatched "
+        "NativeRegisterContextLinux_x86::%s data_sp contained mismatched "
         "data size, expected %zu, actual %" PRIu64,
         __FUNCTION__, REG_CONTEXT_SIZE, data_sp->GetByteSize());
     return error;
@@ -567,7 +567,7 @@ Status 
NativeRegisterContextNetBSD_x86_64::WriteAllRegisterValues(
   const uint8_t *src = data_sp->GetBytes();
   if (src == nullptr) {
     error = Status::FromErrorStringWithFormat(
-        "NativeRegisterContextNetBSD_x86_64::%s "
+        "NativeRegisterContextLinux_x86::%s "
         "DataBuffer::GetBytes() returned a null "
         "pointer",
         __FUNCTION__);
@@ -583,9 +583,9 @@ Status 
NativeRegisterContextNetBSD_x86_64::WriteAllRegisterValues(
   return error;
 }
 
-llvm::Error NativeRegisterContextNetBSD_x86_64::CopyHardwareWatchpointsFrom(
+llvm::Error NativeRegisterContextLinux_x86::CopyHardwareWatchpointsFrom(
     NativeRegisterContextNetBSD &source) {
-  auto &r_source = static_cast<NativeRegisterContextNetBSD_x86_64 &>(source);
+  auto &r_source = static_cast<NativeRegisterContextLinux_x86 &>(source);
   // NB: This implicitly reads the whole dbreg set.
   RegisterValue dr7;
   Status res = r_source.ReadRegister(GetDR(7), dr7);
@@ -601,8 +601,8 @@ llvm::Error 
NativeRegisterContextNetBSD_x86_64::CopyHardwareWatchpointsFrom(
 }
 
 uint8_t *
-NativeRegisterContextNetBSD_x86_64::GetOffsetRegSetData(RegSetKind set,
-                                                        size_t reg_offset) {
+NativeRegisterContextLinux_x86::GetOffsetRegSetData(RegSetKind set,
+                                                    size_t reg_offset) {
   uint8_t *base;
   switch (set) {
   case GPRegSet:
@@ -623,8 +623,8 @@ 
NativeRegisterContextNetBSD_x86_64::GetOffsetRegSetData(RegSetKind set,
   return base + (reg_offset - m_regset_offsets[set]);
 }
 
-std::optional<NativeRegisterContextNetBSD_x86_64::YMMSplitPtr>
-NativeRegisterContextNetBSD_x86_64::GetYMMSplitReg(uint32_t reg) {
+std::optional<NativeRegisterContextLinux_x86::YMMSplitPtr>
+NativeRegisterContextLinux_x86::GetYMMSplitReg(uint32_t reg) {
   auto xst = reinterpret_cast<xstate *>(m_xstate.data());
   if (!(xst->xs_rfbm & XCR0_SSE) || !(xst->xs_rfbm & XCR0_YMM_Hi128))
     return std::nullopt;
@@ -645,4 +645,4 @@ NativeRegisterContextNetBSD_x86_64::GetYMMSplitReg(uint32_t 
reg) {
                      &xst->xs_ymm_hi128.xs_ymm[reg_index]};
 }
 
-#endif // defined(__x86_64__)
+#endif // defined(__i386__) || defined(__x86_64__)
diff --git 
a/lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.h 
b/lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86.h
similarity index 80%
rename from 
lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.h
rename to lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86.h
index e4597b2f69c6c..bb939eca478db 100644
--- a/lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.h
+++ b/lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86.h
@@ -1,4 +1,4 @@
-//===-- NativeRegisterContextNetBSD_x86_64.h --------------------*- C++ 
-*-===//
+//===-- NativeRegisterContextNetBSD_x86.h -----------------------*- C++ 
-*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -8,8 +8,8 @@
 
 #if defined(__i386__) || defined(__x86_64__)
 
-#ifndef lldb_NativeRegisterContextNetBSD_x86_64_h
-#define lldb_NativeRegisterContextNetBSD_x86_64_h
+#ifndef lldb_NativeRegisterContextNetBSD_x86_h
+#define lldb_NativeRegisterContextNetBSD_x86_h
 
 // clang-format off
 #include <sys/param.h>
@@ -22,8 +22,8 @@
 #include <optional>
 
 #include "Plugins/Process/NetBSD/NativeRegisterContextNetBSD.h"
-#include "Plugins/Process/Utility/RegisterContext_x86.h"
 #include "Plugins/Process/Utility/NativeRegisterContextDBReg_x86.h"
+#include "Plugins/Process/Utility/RegisterContext_x86.h"
 #include "Plugins/Process/Utility/lldb-x86-register-enums.h"
 
 namespace lldb_private {
@@ -31,12 +31,11 @@ namespace process_netbsd {
 
 class NativeProcessNetBSD;
 
-class NativeRegisterContextNetBSD_x86_64
-    : public NativeRegisterContextNetBSD,
-      public NativeRegisterContextDBReg_x86 {
+class NativeRegisterContextNetBSD_x86 : public NativeRegisterContextNetBSD,
+                                        public NativeRegisterContextDBReg_x86 {
 public:
-  NativeRegisterContextNetBSD_x86_64(const ArchSpec &target_arch,
-                                     NativeThreadProtocol &native_thread);
+  NativeRegisterContextNetBSD_x86(const ArchSpec &target_arch,
+                                  NativeThreadProtocol &native_thread);
   uint32_t GetRegisterSetCount() const override;
 
   const RegisterSet *GetRegisterSet(uint32_t set_index) const override;
@@ -89,6 +88,6 @@ class NativeRegisterContextNetBSD_x86_64
 } // namespace process_netbsd
 } // namespace lldb_private
 
-#endif // #ifndef lldb_NativeRegisterContextNetBSD_x86_64_h
+#endif // #ifndef lldb_NativeRegisterContextNetBSD_x86_h
 
-#endif // defined(__x86_64__)
+#endif // defined(__i386__) || defined(__x86_64__)
diff --git a/lldb/source/Plugins/Process/elf-core/CMakeLists.txt 
b/lldb/source/Plugins/Process/elf-core/CMakeLists.txt
index 73d2b9ac9957b..6bf295f0ad2e2 100644
--- a/lldb/source/Plugins/Process/elf-core/CMakeLists.txt
+++ b/lldb/source/Plugins/Process/elf-core/CMakeLists.txt
@@ -1,13 +1,13 @@
 add_lldb_library(lldbPluginProcessElfCore PLUGIN
   ProcessElfCore.cpp
   ThreadElfCore.cpp
-  RegisterContextLinuxCore_x86_64.cpp
+  RegisterContextLinuxCore_x86.cpp
   RegisterContextPOSIXCore_arm.cpp
   RegisterContextPOSIXCore_arm64.cpp
   RegisterContextPOSIXCore_powerpc.cpp
   RegisterContextPOSIXCore_ppc64le.cpp
   RegisterContextPOSIXCore_s390x.cpp
-  RegisterContextPOSIXCore_x86_64.cpp
+  RegisterContextPOSIXCore_x86.cpp
   RegisterContextPOSIXCore_riscv32.cpp
   RegisterContextPOSIXCore_riscv64.cpp
   RegisterContextPOSIXCore_loongarch64.cpp
diff --git 
a/lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86_64.cpp 
b/lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86.cpp
similarity index 96%
rename from 
lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86_64.cpp
rename to lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86.cpp
index b806292c7a1a2..5df360f86f09b 100644
--- a/lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86_64.cpp
+++ b/lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86.cpp
@@ -1,4 +1,4 @@
-//===-- RegisterContextLinuxCore_x86_64.cpp 
-------------------------------===//
+//===-- RegisterContextLinuxCore_x86.cpp 
----------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -6,7 +6,7 @@
 //
 
//===----------------------------------------------------------------------===//
 
-#include "RegisterContextLinuxCore_x86_64.h"
+#include "RegisterContextLinuxCore_x86.h"
 #include "lldb/Target/Thread.h"
 #include "lldb/Utility/DataExtractor.h"
 #include "lldb/Utility/RegisterValue.h"
@@ -210,12 +210,12 @@ static const RegisterSet g_reg_sets_x86_64[] = {
     {"Advanced Vector Extensions", "avx", 
x86_64_with_base::k_num_avx_registers,
      g_avx_regnums_x86_64}};
 
-RegisterContextLinuxCore_x86_64::RegisterContextLinuxCore_x86_64(
+RegisterContextLinuxCore_x86::RegisterContextLinuxCore_x86(
     Thread &thread, RegisterInfoInterface *register_info,
     const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes)
-    : RegisterContextCorePOSIX_x86_64(thread, register_info, gpregset, notes) 
{}
+    : RegisterContextCorePOSIX_x86(thread, register_info, gpregset, notes) {}
 
-const RegisterSet *RegisterContextLinuxCore_x86_64::GetRegisterSet(size_t set) 
{
+const RegisterSet *RegisterContextLinuxCore_x86::GetRegisterSet(size_t set) {
   if (IsRegisterSetAvailable(set)) {
     switch (m_register_info_up->GetTargetArchitecture().GetMachine()) {
     case llvm::Triple::x86:
@@ -230,7 +230,7 @@ const RegisterSet 
*RegisterContextLinuxCore_x86_64::GetRegisterSet(size_t set) {
   return nullptr;
 }
 
-RegInfo &RegisterContextLinuxCore_x86_64::GetRegInfo() {
+RegInfo &RegisterContextLinuxCore_x86::GetRegInfo() {
   return GetRegInfoShared(
       m_register_info_up->GetTargetArchitecture().GetMachine(),
       /*with_base=*/true);
diff --git 
a/lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86_64.h 
b/lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86.h
similarity index 76%
rename from 
lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86_64.h
rename to lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86.h
index a68ed82d718c3..68126f959fc6e 100644
--- a/lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86_64.h
+++ b/lldb/source/Plugins/Process/elf-core/RegisterContextLinuxCore_x86.h
@@ -1,4 +1,4 @@
-//===-- RegisterContextLinuxCore_x86_64.h -----------------------*- C++ 
-*-===//
+//===-- RegisterContextLinuxCore_x86.h --------------------------*- C++ 
-*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -6,15 +6,15 @@
 //
 
//===----------------------------------------------------------------------===//
 
-#ifndef LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTLINUXCORE_X86_64_H
-#define LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTLINUXCORE_X86_64_H
+#ifndef LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTLINUXCORE_X86_H
+#define LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTLINUXCORE_X86_H
 
 #include "Plugins/Process/elf-core/RegisterUtilities.h"
-#include "RegisterContextPOSIXCore_x86_64.h"
+#include "RegisterContextPOSIXCore_x86.h"
 
-class RegisterContextLinuxCore_x86_64 : public RegisterContextCorePOSIX_x86_64 
{
+class RegisterContextLinuxCore_x86 : public RegisterContextCorePOSIX_x86 {
 public:
-  RegisterContextLinuxCore_x86_64(
+  RegisterContextLinuxCore_x86(
       lldb_private::Thread &thread,
       lldb_private::RegisterInfoInterface *register_info,
       const lldb_private::DataExtractor &gpregset,
@@ -25,4 +25,4 @@ class RegisterContextLinuxCore_x86_64 : public 
RegisterContextCorePOSIX_x86_64 {
   lldb_private::RegInfo &GetRegInfo() override;
 };
 
-#endif // 
LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTLINUXCORE_X86_64_H
+#endif // LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTLINUXCORE_X86_H
diff --git 
a/lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86_64.cpp 
b/lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86.cpp
similarity index 69%
rename from 
lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86_64.cpp
rename to lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86.cpp
index 845312f4c1edd..e5dbf4cd09d52 100644
--- a/lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86_64.cpp
+++ b/lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86.cpp
@@ -1,4 +1,4 @@
-//===-- RegisterContextPOSIXCore_x86_64.cpp 
-------------------------------===//
+//===-- RegisterContextPOSIXCore_x86.cpp 
----------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -6,14 +6,14 @@
 //
 
//===----------------------------------------------------------------------===//
 
-#include "RegisterContextPOSIXCore_x86_64.h"
+#include "RegisterContextPOSIXCore_x86.h"
 #include "lldb/Target/Thread.h"
 #include "lldb/Utility/DataExtractor.h"
 #include "lldb/Utility/RegisterValue.h"
 
 using namespace lldb_private;
 
-RegisterContextCorePOSIX_x86_64::RegisterContextCorePOSIX_x86_64(
+RegisterContextCorePOSIX_x86::RegisterContextCorePOSIX_x86(
     Thread &thread, RegisterInfoInterface *register_info,
     const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes)
     : RegisterContextPOSIX_x86(thread, 0, register_info) {
@@ -36,26 +36,22 @@ 
RegisterContextCorePOSIX_x86_64::RegisterContextCorePOSIX_x86_64(
     m_fpregset.reset();
 }
 
-bool RegisterContextCorePOSIX_x86_64::ReadGPR() {
-  return m_gpregset != nullptr;
-}
+bool RegisterContextCorePOSIX_x86::ReadGPR() { return m_gpregset != nullptr; }
 
-bool RegisterContextCorePOSIX_x86_64::ReadFPR() {
-  return m_fpregset != nullptr;
-}
+bool RegisterContextCorePOSIX_x86::ReadFPR() { return m_fpregset != nullptr; }
 
-bool RegisterContextCorePOSIX_x86_64::WriteGPR() {
+bool RegisterContextCorePOSIX_x86::WriteGPR() {
   assert(0);
   return false;
 }
 
-bool RegisterContextCorePOSIX_x86_64::WriteFPR() {
+bool RegisterContextCorePOSIX_x86::WriteFPR() {
   assert(0);
   return false;
 }
 
-bool RegisterContextCorePOSIX_x86_64::ReadRegister(const RegisterInfo 
*reg_info,
-                                                   RegisterValue &value) {
+bool RegisterContextCorePOSIX_x86::ReadRegister(const RegisterInfo *reg_info,
+                                                RegisterValue &value) {
   const uint8_t *src;
   size_t offset;
   const size_t fxsave_offset = reg_info->byte_offset - GetFXSAVEOffset();
@@ -79,21 +75,21 @@ bool RegisterContextCorePOSIX_x86_64::ReadRegister(const 
RegisterInfo *reg_info,
   return error.Success();
 }
 
-bool RegisterContextCorePOSIX_x86_64::ReadAllRegisterValues(
+bool RegisterContextCorePOSIX_x86::ReadAllRegisterValues(
     lldb::WritableDataBufferSP &data_sp) {
   return false;
 }
 
-bool RegisterContextCorePOSIX_x86_64::WriteRegister(
-    const RegisterInfo *reg_info, const RegisterValue &value) {
+bool RegisterContextCorePOSIX_x86::WriteRegister(const RegisterInfo *reg_info,
+                                                 const RegisterValue &value) {
   return false;
 }
 
-bool RegisterContextCorePOSIX_x86_64::WriteAllRegisterValues(
+bool RegisterContextCorePOSIX_x86::WriteAllRegisterValues(
     const lldb::DataBufferSP &data_sp) {
   return false;
 }
 
-bool RegisterContextCorePOSIX_x86_64::HardwareSingleStep(bool enable) {
+bool RegisterContextCorePOSIX_x86::HardwareSingleStep(bool enable) {
   return false;
 }
diff --git 
a/lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86_64.h 
b/lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86.h
similarity index 87%
rename from 
lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86_64.h
rename to lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86.h
index 46416a2381dbf..56f910b18683a 100644
--- a/lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86_64.h
+++ b/lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86.h
@@ -1,4 +1,4 @@
-//===-- RegisterContextPOSIXCore_x86_64.h -----------------------*- C++ 
-*-===//
+//===-- RegisterContextPOSIXCore_x86.h --------------------------*- C++ 
-*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -6,15 +6,15 @@
 //
 
//===----------------------------------------------------------------------===//
 
-#ifndef LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTPOSIXCORE_X86_64_H
-#define LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTPOSIXCORE_X86_64_H
+#ifndef LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTPOSIXCORE_X86_H
+#define LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTPOSIXCORE_X86_H
 
 #include "Plugins/Process/Utility/RegisterContextPOSIX_x86.h"
 #include "Plugins/Process/elf-core/RegisterUtilities.h"
 
-class RegisterContextCorePOSIX_x86_64 : public RegisterContextPOSIX_x86 {
+class RegisterContextCorePOSIX_x86 : public RegisterContextPOSIX_x86 {
 public:
-  RegisterContextCorePOSIX_x86_64(
+  RegisterContextCorePOSIX_x86(
       lldb_private::Thread &thread,
       lldb_private::RegisterInfoInterface *register_info,
       const lldb_private::DataExtractor &gpregset,
@@ -46,4 +46,4 @@ class RegisterContextCorePOSIX_x86_64 : public 
RegisterContextPOSIX_x86 {
   std::unique_ptr<uint8_t[]> m_fpregset;
 };
 
-#endif // 
LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTPOSIXCORE_X86_64_H
+#endif // LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_REGISTERCONTEXTPOSIXCORE_X86_H
diff --git a/lldb/source/Plugins/Process/elf-core/ThreadElfCore.cpp 
b/lldb/source/Plugins/Process/elf-core/ThreadElfCore.cpp
index b51d34a2614f1..95655bad2894b 100644
--- a/lldb/source/Plugins/Process/elf-core/ThreadElfCore.cpp
+++ b/lldb/source/Plugins/Process/elf-core/ThreadElfCore.cpp
@@ -30,7 +30,7 @@
 #include "Plugins/Process/Utility/RegisterInfoPOSIX_arm64.h"
 #include "Plugins/Process/Utility/RegisterInfoPOSIX_ppc64le.h"
 #include "ProcessElfCore.h"
-#include "RegisterContextLinuxCore_x86_64.h"
+#include "RegisterContextLinuxCore_x86.h"
 #include "RegisterContextPOSIXCore_arm.h"
 #include "RegisterContextPOSIXCore_arm64.h"
 #include "RegisterContextPOSIXCore_loongarch64.h"
@@ -39,7 +39,7 @@
 #include "RegisterContextPOSIXCore_riscv32.h"
 #include "RegisterContextPOSIXCore_riscv64.h"
 #include "RegisterContextPOSIXCore_s390x.h"
-#include "RegisterContextPOSIXCore_x86_64.h"
+#include "RegisterContextPOSIXCore_x86.h"
 #include "ThreadElfCore.h"
 
 #include <memory>
@@ -216,11 +216,11 @@ ThreadElfCore::CreateRegisterContextForFrame(StackFrame 
*frame) {
     case llvm::Triple::x86:
     case llvm::Triple::x86_64:
       if (is_linux) {
-        m_thread_reg_ctx_sp = 
std::make_shared<RegisterContextLinuxCore_x86_64>(
-              *this, reg_interface, m_gpregset_data, m_notes);
+        m_thread_reg_ctx_sp = std::make_shared<RegisterContextLinuxCore_x86>(
+            *this, reg_interface, m_gpregset_data, m_notes);
       } else {
-        m_thread_reg_ctx_sp = 
std::make_shared<RegisterContextCorePOSIX_x86_64>(
-              *this, reg_interface, m_gpregset_data, m_notes);
+        m_thread_reg_ctx_sp = std::make_shared<RegisterContextCorePOSIX_x86>(
+            *this, reg_interface, m_gpregset_data, m_notes);
       }
       break;
     default:
diff --git a/lldb/source/Plugins/Process/minidump/ThreadMinidump.cpp 
b/lldb/source/Plugins/Process/minidump/ThreadMinidump.cpp
index 1fbc52815238b..fe62f89a3ac0e 100644
--- a/lldb/source/Plugins/Process/minidump/ThreadMinidump.cpp
+++ b/lldb/source/Plugins/Process/minidump/ThreadMinidump.cpp
@@ -17,7 +17,7 @@
 
 #include "Plugins/Process/Utility/RegisterContextLinux_i386.h"
 #include "Plugins/Process/Utility/RegisterContextLinux_x86_64.h"
-#include "Plugins/Process/elf-core/RegisterContextPOSIXCore_x86_64.h"
+#include "Plugins/Process/elf-core/RegisterContextPOSIXCore_x86.h"
 #include "Plugins/Process/elf-core/RegisterUtilities.h"
 
 #include "lldb/Target/RegisterContext.h"
@@ -73,7 +73,7 @@ ThreadMinidump::CreateRegisterContextForFrame(StackFrame 
*frame) {
       lldb::DataBufferSP buf =
           ConvertMinidumpContext_x86_32(m_gpregset_data, reg_interface);
       DataExtractor gpregset(buf, lldb::eByteOrderLittle, 4);
-      m_thread_reg_ctx_sp = std::make_shared<RegisterContextCorePOSIX_x86_64>(
+      m_thread_reg_ctx_sp = std::make_shared<RegisterContextCorePOSIX_x86>(
           *this, reg_interface, gpregset,
           llvm::ArrayRef<lldb_private::CoreNote>());
       break;
@@ -83,7 +83,7 @@ ThreadMinidump::CreateRegisterContextForFrame(StackFrame 
*frame) {
       lldb::DataBufferSP buf =
           ConvertMinidumpContext_x86_64(m_gpregset_data, reg_interface);
       DataExtractor gpregset(buf, lldb::eByteOrderLittle, 8);
-      m_thread_reg_ctx_sp = std::make_shared<RegisterContextCorePOSIX_x86_64>(
+      m_thread_reg_ctx_sp = std::make_shared<RegisterContextCorePOSIX_x86>(
           *this, reg_interface, gpregset,
           llvm::ArrayRef<lldb_private::CoreNote>());
       break;

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