1 files changed, 86 insertions, 0 deletions

diff --git a/contrib/llvm-project/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterFallback.cpp b/contrib/llvm-project/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterFallback.cpp
new file mode 100644
index 000000000000..b391edced695
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterFallback.cpp
@@ -0,0 +1,86 @@
+//===-- GDBRemoteRegisterFallback.cpp -------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "GDBRemoteRegisterFallback.h"
+
+namespace lldb_private {
+namespace process_gdb_remote {
+
+#define REG(name, size)                                                        \
+  DynamicRegisterInfo::Register {                                              \
+    ConstString(#name), empty_alt_name, reg_set, size, LLDB_INVALID_INDEX32,   \
+        lldb::eEncodingUint, lldb::eFormatHex, LLDB_INVALID_REGNUM,            \
+        LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, {}, {}  \
+  }
+#define R64(name) REG(name, 8)
+#define R32(name) REG(name, 4)
+
+static std::vector<DynamicRegisterInfo::Register> GetRegisters_aarch64() {
+  ConstString empty_alt_name;
+  ConstString reg_set{"general purpose registers"};
+
+  std::vector<DynamicRegisterInfo::Register> registers{
+      R64(x0),  R64(x1),  R64(x2),  R64(x3),  R64(x4),  R64(x5),   R64(x6),
+      R64(x7),  R64(x8),  R64(x9),  R64(x10), R64(x11), R64(x12),  R64(x13),
+      R64(x14), R64(x15), R64(x16), R64(x17), R64(x18), R64(x19),  R64(x20),
+      R64(x21), R64(x22), R64(x23), R64(x24), R64(x25), R64(x26),  R64(x27),
+      R64(x28), R64(x29), R64(x30), R64(sp),  R64(pc),  R32(cpsr),
+  };
+
+  return registers;
+}
+
+static std::vector<DynamicRegisterInfo::Register> GetRegisters_x86() {
+  ConstString empty_alt_name;
+  ConstString reg_set{"general purpose registers"};
+
+  std::vector<DynamicRegisterInfo::Register> registers{
+      R32(eax), R32(ecx), R32(edx), R32(ebx),    R32(esp), R32(ebp),
+      R32(esi), R32(edi), R32(eip), R32(eflags), R32(cs),  R32(ss),
+      R32(ds),  R32(es),  R32(fs),  R32(gs),
+  };
+
+  return registers;
+}
+
+static std::vector<DynamicRegisterInfo::Register> GetRegisters_x86_64() {
+  ConstString empty_alt_name;
+  ConstString reg_set{"general purpose registers"};
+
+  std::vector<DynamicRegisterInfo::Register> registers{
+      R64(rax), R64(rbx), R64(rcx), R64(rdx), R64(rsi), R64(rdi),
+      R64(rbp), R64(rsp), R64(r8),  R64(r9),  R64(r10), R64(r11),
+      R64(r12), R64(r13), R64(r14), R64(r15), R64(rip), R32(eflags),
+      R32(cs),  R32(ss),  R32(ds),  R32(es),  R32(fs),  R32(gs),
+  };
+
+  return registers;
+}
+
+#undef R32
+#undef R64
+#undef REG
+
+std::vector<DynamicRegisterInfo::Register>
+GetFallbackRegisters(const ArchSpec &arch_to_use) {
+  switch (arch_to_use.GetMachine()) {
+  case llvm::Triple::aarch64:
+    return GetRegisters_aarch64();
+  case llvm::Triple::x86:
+    return GetRegisters_x86();
+  case llvm::Triple::x86_64:
+    return GetRegisters_x86_64();
+  default:
+    break;
+  }
+
+  return {};
+}
+
+} // namespace process_gdb_remote
+} // namespace lldb_private