From: Igor Kovalenko <igor.v.kovalenko@gmail.com>
Date: Mon, 27 Apr 2009 19:06:33 +0000 (+0400)
Subject: sparc64 fix TLB match code
X-Git-Tag: 0.10.0-0sb10~1392
X-Git-Url: http://vcs.maemo.org/git/?a=commitdiff_plain;h=82f2cfc31b0189c7b9d88af49e5a2b8c9a335c3e;p=qemu

sparc64 fix TLB match code

TLB match code must respect page size, otherwise 4M page mappings may
be not found.

Also correct a typo in get_physical_address_code which should use IMMU
registers.

Signed-off-by: Igor V. Kovalenko <igor.v.kovalenko@gmail.com>

--
Kind regards,
Igor V. Kovalenko
---

diff --git a/target-sparc/helper.c b/target-sparc/helper.c
index 428f97d..09a2829 100644
--- a/target-sparc/helper.c
+++ b/target-sparc/helper.c
@@ -404,7 +404,7 @@ static int get_physical_address_data(CPUState *env,
         }
         // ctx match, vaddr match, valid?
         if (env->dmmuregs[1] == (env->dtlb_tag[i] & 0x1fff) &&
-            (address & mask) == (env->dtlb_tag[i] & ~0x1fffULL) &&
+            (address & mask) == (env->dtlb_tag[i] & mask) &&
             (env->dtlb_tte[i] & 0x8000000000000000ULL)) {
             // access ok?
             if (((env->dtlb_tte[i] & 0x4) && is_user) ||
@@ -420,8 +420,8 @@ static int get_physical_address_data(CPUState *env,
 #endif
                 return 1;
             }
-            *physical = (env->dtlb_tte[i] & mask & 0x1fffffff000ULL) +
-                (address & ~mask & 0x1fffffff000ULL);
+            *physical = ((env->dtlb_tte[i] & mask) | (address & ~mask)) &
+                        0x1ffffffe000ULL;
             *prot = PAGE_READ;
             if (env->dtlb_tte[i] & 0x2)
                 *prot |= PAGE_WRITE;
@@ -467,7 +467,7 @@ static int get_physical_address_code(CPUState *env,
         }
         // ctx match, vaddr match, valid?
         if (env->dmmuregs[1] == (env->itlb_tag[i] & 0x1fff) &&
-            (address & mask) == (env->itlb_tag[i] & ~0x1fffULL) &&
+            (address & mask) == (env->itlb_tag[i] & mask) &&
             (env->itlb_tte[i] & 0x8000000000000000ULL)) {
             // access ok?
             if ((env->itlb_tte[i] & 0x4) && is_user) {
@@ -481,8 +481,8 @@ static int get_physical_address_code(CPUState *env,
 #endif
                 return 1;
             }
-            *physical = (env->itlb_tte[i] & mask & 0x1fffffff000ULL) +
-                (address & ~mask & 0x1fffffff000ULL);
+            *physical = ((env->itlb_tte[i] & mask) | (address & ~mask)) &
+                        0x1ffffffe000ULL;
             *prot = PAGE_EXEC;
             return 0;
         }
@@ -490,7 +490,7 @@ static int get_physical_address_code(CPUState *env,
 #ifdef DEBUG_MMU
     printf("TMISS at 0x%" PRIx64 "\n", address);
 #endif
-    env->immuregs[6] = (address & ~0x1fffULL) | (env->dmmuregs[1] & 0x1fff);
+    env->immuregs[6] = (address & ~0x1fffULL) | (env->immuregs[1] & 0x1fff);
     env->exception_index = TT_TMISS;
     return 1;
 }