Core commit. Compile and run on the OpenPandora

[mupen64plus-pandora.git] / source / mupen64plus-core / src / memory / tlb.c

diff --git a/source/mupen64plus-core/src/memory/tlb.c b/source/mupen64plus-core/src/memory/tlb.c
new file mode 100644 (file)
index 0000000..c5eaf82
--- /dev/null
+++ b/source/mupen64plus-core/src/memory/tlb.c
@@ -0,0 +1,135 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ *   Mupen64plus - tlb.c                                                   *
+ *   Mupen64Plus homepage: http://code.google.com/p/mupen64plus/           *
+ *   Copyright (C) 2002 Hacktarux                                          *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#include <string.h>
+
+#include "api/m64p_types.h"
+
+#include "memory.h"
+
+#include "r4300/r4300.h"
+#include "r4300/exception.h"
+#include "r4300/macros.h"
+#include "main/rom.h"
+
+unsigned int tlb_LUT_r[0x100000];
+unsigned int tlb_LUT_w[0x100000];
+
+void tlb_unmap(tlb *entry)
+{
+    unsigned int i;
+
+    if (entry->v_even)
+    {
+        for (i=entry->start_even; i<entry->end_even; i += 0x1000)
+            tlb_LUT_r[i>>12] = 0;
+        if (entry->d_even)
+            for (i=entry->start_even; i<entry->end_even; i += 0x1000)
+                tlb_LUT_w[i>>12] = 0;
+    }
+
+    if (entry->v_odd)
+    {
+        for (i=entry->start_odd; i<entry->end_odd; i += 0x1000)
+            tlb_LUT_r[i>>12] = 0;
+        if (entry->d_odd)
+            for (i=entry->start_odd; i<entry->end_odd; i += 0x1000)
+                tlb_LUT_w[i>>12] = 0;
+    }
+}
+
+void tlb_map(tlb *entry)
+{
+    unsigned int i;
+
+    if (entry->v_even)
+    {
+        if (entry->start_even < entry->end_even &&
+            !(entry->start_even >= 0x80000000 && entry->end_even < 0xC0000000) &&
+            entry->phys_even < 0x20000000)
+        {
+            for (i=entry->start_even;i<entry->end_even;i+=0x1000)
+                tlb_LUT_r[i>>12] = 0x80000000 | (entry->phys_even + (i - entry->start_even) + 0xFFF);
+            if (entry->d_even)
+                for (i=entry->start_even;i<entry->end_even;i+=0x1000)
+                    tlb_LUT_w[i>>12] = 0x80000000 | (entry->phys_even + (i - entry->start_even) + 0xFFF);
+        }
+    }
+
+    if (entry->v_odd)
+    {
+        if (entry->start_odd < entry->end_odd &&
+            !(entry->start_odd >= 0x80000000 && entry->end_odd < 0xC0000000) &&
+            entry->phys_odd < 0x20000000)
+        {
+            for (i=entry->start_odd;i<entry->end_odd;i+=0x1000)
+                tlb_LUT_r[i>>12] = 0x80000000 | (entry->phys_odd + (i - entry->start_odd) + 0xFFF);
+            if (entry->d_odd)
+                for (i=entry->start_odd;i<entry->end_odd;i+=0x1000)
+                    tlb_LUT_w[i>>12] = 0x80000000 | (entry->phys_odd + (i - entry->start_odd) + 0xFFF);
+        }
+    }
+}
+
+unsigned int virtual_to_physical_address(unsigned int addresse, int w)
+{
+    if (addresse >= 0x7f000000 && addresse < 0x80000000 && isGoldeneyeRom)
+    {
+        /**************************************************
+         GoldenEye 007 hack allows for use of TLB.
+         Recoded by okaygo to support all US, J, and E ROMS.
+        **************************************************/
+        switch (ROM_HEADER.Country_code & 0xFF)
+        {
+        case 0x45:
+            // U
+            return 0xb0034b30 + (addresse & 0xFFFFFF);
+            break;
+        case 0x4A:
+            // J
+            return 0xb0034b70 + (addresse & 0xFFFFFF);
+            break;
+        case 0x50:
+            // E
+            return 0xb00329f0 + (addresse & 0xFFFFFF);
+            break;
+        default:
+            // UNKNOWN COUNTRY CODE FOR GOLDENEYE USING AMERICAN VERSION HACK
+            return 0xb0034b30 + (addresse & 0xFFFFFF);
+            break;
+        }
+    }
+    if (w == 1)
+    {
+        if (tlb_LUT_w[addresse>>12])
+            return (tlb_LUT_w[addresse>>12]&0xFFFFF000)|(addresse&0xFFF);
+    }
+    else
+    {
+        if (tlb_LUT_r[addresse>>12])
+            return (tlb_LUT_r[addresse>>12]&0xFFFFF000)|(addresse&0xFFF);
+    }
+    //printf("tlb exception !!! @ %x, %x, add:%x\n", addresse, w, PC->addr);
+    //getchar();
+    TLB_refill_exception(addresse,w);
+    //return 0x80000000;
+    return 0x00000000;
+}