1 files changed, 19 insertions, 1 deletions
diff --git a/contrib/llvm-project/lldb/source/Plugins/Process/Utility/RegisterContext_x86.h b/contrib/llvm-project/lldb/source/Plugins/Process/Utility/RegisterContext_x86.h
index 27a1bad4d53f..76e004ce0ceb 100644
--- a/contrib/llvm-project/lldb/source/Plugins/Process/Utility/RegisterContext_x86.h
+++ b/contrib/llvm-project/lldb/source/Plugins/Process/Utility/RegisterContext_x86.h
@@ -12,6 +12,7 @@
 #include <cstddef>
 #include <cstdint>
 
+#include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/BitmaskEnum.h"
 #include "llvm/Support/Compiler.h"
 
@@ -239,10 +240,23 @@ enum {
 
 // Generic floating-point registers
 
+LLVM_PACKED_START
+struct MMSRegComp {
+  uint64_t mantissa;
+  uint16_t sign_exp;
+};
+
 struct MMSReg {
-  uint8_t bytes[10];
+  union {
+    uint8_t bytes[10];
+    MMSRegComp comp;
+  };
   uint8_t pad[6];
 };
+LLVM_PACKED_END
+
+static_assert(sizeof(MMSRegComp) == 10, "MMSRegComp is not 10 bytes of size");
+static_assert(sizeof(MMSReg) == 16, "MMSReg is not 16 bytes of size");
 
 struct XMMReg {
   uint8_t bytes[16]; // 128-bits for each XMM register
@@ -369,6 +383,10 @@ inline void YMMToXState(const YMMReg& input, void* xmm_bytes, void* ymmh_bytes)
   ::memcpy(ymmh_bytes, input.bytes + sizeof(XMMReg), sizeof(YMMHReg));
 }
 
+uint16_t AbridgedToFullTagWord(uint8_t abridged_tw, uint16_t sw,
+                               llvm::ArrayRef<MMSReg> st_regs);
+uint8_t FullToAbridgedTagWord(uint16_t tw);
+
 } // namespace lldb_private
 
 #endif