pcsxmem: mmap RAM/BIOS/scratchpad to better locations

This permits the Lightrec dynarec to emit better code.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>

diff --git a/libpcsxcore/psxmem.c b/libpcsxcore/psxmem.c
index a1a641d..caa0d65 100644 (file)
--- a/libpcsxcore/psxmem.c
+++ b/libpcsxcore/psxmem.c
@@ -42,7 +42,7 @@ void (*psxUnmapHook)(void *ptr, size_t size, enum psxMapTag tag);
 void *psxMap(unsigned long addr, size_t size, int is_fixed,
                enum psxMapTag tag)
 {
-       int flags = MAP_PRIVATE | MAP_ANONYMOUS;
+       int flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED;
        int try_ = 0;
        unsigned long mask;
        void *req, *ret;
@@ -135,7 +135,7 @@ int psxMemInit() {
        memset(psxMemRLUT, 0, 0x10000 * sizeof(void *));
        memset(psxMemWLUT, 0, 0x10000 * sizeof(void *));
 
-       psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM);
+       psxM = psxMap(0x30000000, 0x00210000, 1, MAP_TAG_RAM);
 #ifndef RAM_FIXED
        if (psxM == NULL)
                psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM);
@@ -146,8 +146,8 @@ int psxMemInit() {
        }
 
        psxP = &psxM[0x200000];
-       psxH = psxMap(0x1f800000, 0x10000, 0, MAP_TAG_OTHER);
-       psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER);
+       psxH = psxMap(0x4f800000, 0x10000, 0, MAP_TAG_OTHER);
+       psxR = psxMap(0x4fc00000, 0x80000, 0, MAP_TAG_OTHER);
 
        if (psxMemRLUT == NULL || psxMemWLUT == NULL || 
            psxR == NULL || psxP == NULL || psxH == NULL) {