[Qemu-devel] [PATCH 4/8] Mips improvements

[Thiemo Seufer]

Hello All,

This patch fixes wrong bitmasks for CP0_Context and CP0_EntryHi.


Thiemo


Index: qemu-work/target-mips/helper.c
===================================================================
--- qemu-work.orig/target-mips/helper.c 2006-05-07 23:41:39.000000000 +0100
+++ qemu-work/target-mips/helper.c      2006-05-07 23:43:38.000000000 +0100
@@ -231,7 +231,7 @@
         env->CP0_Context = (env->CP0_Context & 0xff800000) |
                           ((address >> 9) &   0x007ffff0);
         env->CP0_EntryHi =
-            (env->CP0_EntryHi & 0xFF) | (address & 0xFFFFF000);
+            (env->CP0_EntryHi & 0xFF) | (address & 0xFFFFE000);
         env->exception_index = exception;
         env->error_code = error_code;
         ret = 1;
Index: qemu-work/target-mips/op_helper.c
===================================================================
--- qemu-work.orig/target-mips/op_helper.c      2006-05-07 23:41:39.000000000 
+0100
+++ qemu-work/target-mips/op_helper.c   2006-05-07 23:43:38.000000000 +0100
@@ -342,7 +342,7 @@
         rn = "EntryLo1";
         break;
     case 4:
-        val = (env->CP0_Context & 0xFF000000) | (T0 & 0x00FFFFF0);
+        val = (env->CP0_Context & 0xFF800000) | (T0 & 0x007FFFF0);
         old = env->CP0_Context;
         env->CP0_Context = val;
         rn = "Context";
@@ -366,7 +366,7 @@
         rn = "Count";
         break;
     case 10:
-        val = T0 & 0xFFFFF0FF;
+        val = T0 & 0xFFFFE0FF;
         old = env->CP0_EntryHi;
         env->CP0_EntryHi = val;
        /* If the ASID changes, flush qemu's TLB.  */