Add compile-time option to drop psxMemRLUT, psxMemWLUT

[pcsx_rearmed.git] / libpcsxcore / psxmem.h

diff --git a/libpcsxcore/psxmem.h b/libpcsxcore/psxmem.h
index 129973c..a52472c 100644 (file)
--- a/libpcsxcore/psxmem.h
+++ b/libpcsxcore/psxmem.h
@@ -114,8 +114,48 @@ extern s8 *psxH;
 
 extern u8 **psxMemWLUT;
 extern u8 **psxMemRLUT;
+extern int cache_isolated;
 
-#define PSXM(mem)              (psxMemRLUT[(mem) >> 16] == INVALID_PTR ? INVALID_PTR : (u8*)(psxMemRLUT[(mem) >> 16] + ((mem) & 0xffff)))
+static inline void * psxm_lut(u32 mem, int write, u8 **lut)
+{
+       if (!DISABLE_MEM_LUTS) {
+               void *ptr = lut[mem >> 16];
+
+               return ptr == INVALID_PTR ? INVALID_PTR : ptr + (u16)mem;
+       }
+
+       if (mem >= 0xa0000000)
+               mem -= 0xa0000000;
+       else
+               mem &= ~0x80000000;
+
+       if (mem < 0x800000) {
+               if (cache_isolated)
+                       return INVALID_PTR;
+
+               return &psxM[mem & 0x1fffff];
+       }
+
+       if (mem > 0x1f800000 && mem <= 0x1f810000)
+               return &psxH[mem - 0x1f800000];
+
+       if (!write) {
+               if (mem > 0x1fc00000 && mem <= 0x1fc80000)
+                       return &psxR[mem - 0x1fc00000];
+
+               if (mem > 0x1f000000 && mem <= 0x1f010000)
+                       return &psxP[mem - 0x1f000000];
+       }
+
+       return INVALID_PTR;
+}
+
+static inline void * psxm(u32 mem, int write)
+{
+       return psxm_lut(mem, write, write ? psxMemWLUT : psxMemRLUT);
+}
+
+#define PSXM(mem) psxm(mem, 0)
 #define PSXMs8(mem)            (*(s8 *)PSXM(mem))
 #define PSXMs16(mem)   (SWAP16(*(s16 *)PSXM(mem)))
 #define PSXMs32(mem)   (SWAP32(*(s32 *)PSXM(mem)))