[Lldb-commits] [lldb] [lldb] Support arbitrary precision integer registers (PR #166363)

[David Spickett via lldb-commits]

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@@ -206,7 +206,30 @@ Status RegisterValue::SetValueFromData(const RegisterInfo &reg_info,
         int128.x[0] = data2;
         int128.x[1] = data1;
       }
-      SetUInt128(llvm::APInt(128, int128.x));
+      SetUIntN(llvm::APInt(128, int128.x));
+    } else {
+      std::vector<uint8_t> bytes(src_len, 0);
+      for (size_t i = 0; i < src_len; i++)
+        bytes[i] = src.GetU8(&src_offset);
+
+      if (src.GetByteOrder() == eByteOrderBig)
+        // Transform the big-endian input to little-endian
+        // because that is what the "llvm::LoadIntFromMemory" function
+        // we call below expects.
+        std::reverse(bytes.begin(), bytes.end());
----------------
DavidSpickett wrote:

Immediate thought here was don't we have a "get N bytes" function. I think ExtractBytes is that function, and it takes a byte order. Could you use that here instead?

https://github.com/llvm/llvm-project/pull/166363