mips jazz: do not raise data bus exception when accessing invalid addresses

[qemu.git] / thunk.c

diff --git a/thunk.c b/thunk.c
index 04f5f869c49316890a2706ff9c5a4ea86a2989d4..3cca047509e7483da2f45701b16055eb9f028cf6 100644 (file)
--- a/thunk.c
+++ b/thunk.c
@@ -14,15 +14,14 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdarg.h>
 
 #include "qemu.h"
-#include "thunk.h"
+#include "exec/user/thunk.h"
 
 //#define DEBUG
 
@@ -47,6 +46,7 @@ static inline const argtype *thunk_type_next(const argtype *type_ptr)
     case TYPE_LONG:
     case TYPE_ULONG:
     case TYPE_PTRVOID:
+    case TYPE_OLDDEVT:
         return type_ptr;
     case TYPE_PTR:
         return thunk_type_next_ptr(type_ptr);
@@ -189,6 +189,33 @@ const argtype *thunk_convert(void *dst, const void *src,
 #else
 #warning unsupported conversion
 #endif
+    case TYPE_OLDDEVT:
+    {
+        uint64_t val = 0;
+        switch (thunk_type_size(type_ptr - 1, !to_host)) {
+        case 2:
+            val = *(uint16_t *)src;
+            break;
+        case 4:
+            val = *(uint32_t *)src;
+            break;
+        case 8:
+            val = *(uint64_t *)src;
+            break;
+        }
+        switch (thunk_type_size(type_ptr - 1, to_host)) {
+        case 2:
+            *(uint16_t *)dst = tswap16(val);
+            break;
+        case 4:
+            *(uint32_t *)dst = tswap32(val);
+            break;
+        case 8:
+            *(uint64_t *)dst = tswap64(val);
+            break;
+        }
+        break;
+    }
     case TYPE_ARRAY:
         {
             int array_length, i, dst_size, src_size;
@@ -249,9 +276,9 @@ const argtype *thunk_convert(void *dst, const void *src,
  * between X86 and Alpha formats...
  */
 unsigned int target_to_host_bitmask(unsigned int x86_mask,
-                                    bitmask_transtbl * trans_tbl)
+                                    const bitmask_transtbl * trans_tbl)
 {
-    bitmask_transtbl * btp;
+    const bitmask_transtbl *btp;
     unsigned int       alpha_mask = 0;
 
     for(btp = trans_tbl; btp->x86_mask && btp->alpha_mask; btp++) {
@@ -263,9 +290,9 @@ unsigned int target_to_host_bitmask(unsigned int x86_mask,
 }
 
 unsigned int host_to_target_bitmask(unsigned int alpha_mask,
-                                    bitmask_transtbl * trans_tbl)
+                                    const bitmask_transtbl * trans_tbl)
 {
-    bitmask_transtbl * btp;
+    const bitmask_transtbl *btp;
     unsigned int       x86_mask = 0;
 
     for(btp = trans_tbl; btp->x86_mask && btp->alpha_mask; btp++) {