Make disassembled x86 register indices reflect their size.

This doesn't handle high byte register accesses. It also highlights the fact that address size isn't actually being calculated, and that the size a microop uses needs to be overridable from the microassembly.

--HG--
extra : convert_revision : d495ac4f5756dc55a5f71953ff6963b3c030e6cb

1 files changed, 32 insertions, 24 deletions

diff --git a/src/arch/x86/insts/static_inst.cc b/src/arch/x86/insts/static_inst.cc
index bf84c6e2b..9b2f81e49 100644
--- a/src/arch/x86/insts/static_inst.cc
+++ b/src/arch/x86/insts/static_inst.cc
@@ -99,76 +99,84 @@ namespace X86ISA
     }
 
     void
-    X86StaticInst::printSrcReg(std::ostream &os, int reg) const
+    X86StaticInst::printSrcReg(std::ostream &os, int reg, int size) const
     {
         if(_numSrcRegs > reg)
-            printReg(os, _srcRegIdx[reg]);
+            printReg(os, _srcRegIdx[reg], size);
     }
 
     void
-    X86StaticInst::printDestReg(std::ostream &os, int reg) const
+    X86StaticInst::printDestReg(std::ostream &os, int reg, int size) const
     {
         if(_numDestRegs > reg)
-            printReg(os, _destRegIdx[reg]);
+            printReg(os, _destRegIdx[reg], size);
     }
 
     void
-    X86StaticInst::printReg(std::ostream &os, int reg) const
+    X86StaticInst::printReg(std::ostream &os, int reg, int size) const
     {
+        assert(size == 1 || size == 2 || size == 4 || size == 8);
+        static const char * abcdFormats[9] =
+            {"", "%sl",  "%sx",  "", "e%sx", "", "", "", "r%sx"};
+        static const char * piFormats[9] =
+            {"", "%sl",  "%s",   "", "e%s",  "", "", "", "r%s"};
+        static const char * longFormats[9] =
+            {"", "r%sb", "r%sw", "", "r%sd", "", "", "", "r%s"};
+        static const char * microFormats[9] =
+            {"", "t%db", "t%dw", "", "t%dd", "", "", "", "t%d"};
+
         if (reg < FP_Base_DepTag) {
-            //FIXME These should print differently depending on the
-            //mode etc, but for now this will get the point across
             switch (reg) {
               case INTREG_RAX:
-                ccprintf(os, "rax");
+                ccprintf(os, abcdFormats[size], "a");
                 break;
               case INTREG_RBX:
-                ccprintf(os, "rbx");
+                ccprintf(os, abcdFormats[size], "b");
                 break;
               case INTREG_RCX:
-                ccprintf(os, "rcx");
+                ccprintf(os, abcdFormats[size], "c");
                 break;
               case INTREG_RDX:
-                ccprintf(os, "rdx");
+                ccprintf(os, abcdFormats[size], "d");
                 break;
               case INTREG_RSP:
-                ccprintf(os, "rsp");
+                ccprintf(os, piFormats[size], "sp");
                 break;
               case INTREG_RBP:
-                ccprintf(os, "rbp");
+                ccprintf(os, piFormats[size], "bp");
                 break;
               case INTREG_RSI:
-                ccprintf(os, "rsi");
+                ccprintf(os, piFormats[size], "si");
                 break;
               case INTREG_RDI:
-                ccprintf(os, "rdi");
+                ccprintf(os, piFormats[size], "di");
                 break;
               case INTREG_R8W:
-                ccprintf(os, "r8");
+                ccprintf(os, longFormats[size], "8");
                 break;
               case INTREG_R9W:
-                ccprintf(os, "r9");
+                ccprintf(os, longFormats[size], "9");
                 break;
               case INTREG_R10W:
-                ccprintf(os, "r10");
+                ccprintf(os, longFormats[size], "10");
                 break;
               case INTREG_R11W:
-                ccprintf(os, "r11");
+                ccprintf(os, longFormats[size], "11");
                 break;
               case INTREG_R12W:
-                ccprintf(os, "r12");
+                ccprintf(os, longFormats[size], "12");
                 break;
               case INTREG_R13W:
-                ccprintf(os, "r13");
+                ccprintf(os, longFormats[size], "13");
                 break;
               case INTREG_R14W:
-                ccprintf(os, "r14");
+                ccprintf(os, longFormats[size], "14");
                 break;
               case INTREG_R15W:
-                ccprintf(os, "r15");
+                ccprintf(os, longFormats[size], "15");
                 break;
               default:
-                ccprintf(os, "t%d", reg - NUM_INTREGS);
+                ccprintf(os, microFormats[size], reg - NUM_INTREGS);
             }
         } else if (reg < Ctrl_Base_DepTag) {
             ccprintf(os, "%%f%d", reg - FP_Base_DepTag);