X86: Add functions to read and write to an exec context.

These functions take care of calling the thread contexts read and write functions with the right sized data type, and handle unaligned accesses.

--HG--
extra : convert_revision : b4b59ab2b22559333035185946bae3eab316c879

1 files changed, 56 insertions, 0 deletions

diff --git a/src/arch/x86/insts/microldstop.hh b/src/arch/x86/insts/microldstop.hh
index f90d6670e..ae03d176e 100644
--- a/src/arch/x86/insts/microldstop.hh
+++ b/src/arch/x86/insts/microldstop.hh
@@ -96,6 +96,62 @@ namespace X86ISA
 
         std::string generateDisassembly(Addr pc,
             const SymbolTable *symtab) const;
+
+        template<class Context, class MemType>
+        Fault read(Context *xc, Addr EA, MemType & Mem, unsigned flags) const
+        {
+            Fault fault = NoFault;
+            int size = dataSize;
+            Addr alignedEA = EA & ~(dataSize - 1);
+            if (EA != alignedEA)
+                size *= 2;
+            switch(size)
+            {
+              case 1:
+                fault = xc->read(alignedEA, (uint8_t&)Mem, flags);
+                break;
+              case 2:
+                fault = xc->read(alignedEA, (uint16_t&)Mem, flags);
+                break;
+              case 4:
+                fault = xc->read(alignedEA, (uint32_t&)Mem, flags);
+                break;
+              case 8:
+                fault = xc->read(alignedEA, (uint64_t&)Mem, flags);
+                break;
+              default:
+                panic("Bad operand size %d!\n", size);
+            }
+            return fault;
+        }
+
+        template<class Context, class MemType>
+        Fault write(Context *xc, MemType & Mem, Addr EA, unsigned flags) const
+        {
+            Fault fault = NoFault;
+            int size = dataSize;
+            Addr alignedEA = EA & ~(dataSize - 1);
+            if (EA != alignedEA)
+                size *= 2;
+            switch(size)
+            {
+              case 1:
+                fault = xc->write((uint8_t&)Mem, alignedEA, flags, 0);
+                break;
+              case 2:
+                fault = xc->write((uint16_t&)Mem, alignedEA, flags, 0);
+                break;
+              case 4:
+                fault = xc->write((uint32_t&)Mem, alignedEA, flags, 0);
+                break;
+              case 8:
+                fault = xc->write((uint64_t&)Mem, alignedEA, flags, 0);
+                break;
+              default:
+                panic("Bad operand size %d!\n", size);
+            }
+            return fault;
+        }
     };
 }