[Lldb-commits] [PATCH] D109695: [lldb] [Process/gdb-remote] Alias sp to x31 on AArch64 for gdbserver

[Michał Górny via Phabricator via lldb-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG47d57547f43c: [lldb] [Process/gdb-remote] Alias sp to x31 on AArch64 for gdbserver (authored by mgorny).
Herald added a project: LLDB.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109695/new/

https://reviews.llvm.org/D109695

Files:
  lldb/source/Plugins/ABI/AArch64/ABIAArch64.cpp
  lldb/source/Plugins/ABI/AArch64/ABIAArch64.h
  lldb/test/API/functionalities/gdb_remote_client/TestGDBServerTargetXML.py


Index: lldb/test/API/functionalities/gdb_remote_client/TestGDBServerTargetXML.py
===================================================================
--- lldb/test/API/functionalities/gdb_remote_client/TestGDBServerTargetXML.py
+++ lldb/test/API/functionalities/gdb_remote_client/TestGDBServerTargetXML.py
@@ -397,6 +397,12 @@
                    ["x0 = 0x0807060504030201"])
         self.match("register read x1",
                    ["x1 = 0x1817161514131211"])
+        self.match("register read x29",
+                   ["x29 = 0x3837363534333231"])
+        self.match("register read x30",
+                   ["x30 = 0x4847464544434241"])
+        self.match("register read x31",
+                   ["sp = 0x5857565554535251"])
         self.match("register read sp",
                    ["sp = 0x5857565554535251"])
         self.match("register read pc",
Index: lldb/source/Plugins/ABI/AArch64/ABIAArch64.h
===================================================================
--- lldb/source/Plugins/ABI/AArch64/ABIAArch64.h
+++ lldb/source/Plugins/ABI/AArch64/ABIAArch64.h
@@ -31,6 +31,8 @@
 
   uint32_t GetGenericNum(llvm::StringRef name) override;
 
+  void AugmentRegisterInfo(lldb_private::RegisterInfo &info) override;
+
   using lldb_private::MCBasedABI::MCBasedABI;
 };
 #endif
Index: lldb/source/Plugins/ABI/AArch64/ABIAArch64.cpp
===================================================================
--- lldb/source/Plugins/ABI/AArch64/ABIAArch64.cpp
+++ lldb/source/Plugins/ABI/AArch64/ABIAArch64.cpp
@@ -52,6 +52,7 @@
   MapRegisterName(reg, "x30", "lr");
   return reg;
 }
+
 uint32_t ABIAArch64::GetGenericNum(llvm::StringRef name) {
   return llvm::StringSwitch<uint32_t>(name)
       .Case("pc", LLDB_REGNUM_GENERIC_PC)
@@ -69,3 +70,11 @@
       .Case("x7", LLDB_REGNUM_GENERIC_ARG8)
       .Default(LLDB_INVALID_REGNUM);
 }
+
+void ABIAArch64::AugmentRegisterInfo(lldb_private::RegisterInfo &info) {
+  lldb_private::MCBasedABI::AugmentRegisterInfo(info);
+
+  // GDB sends x31 as "sp".  Add the "x31" alt_name for convenience.
+  if (!strcmp(info.name, "sp") && !info.alt_name)
+    info.alt_name = "x31";
+}


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