X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=pcsx_rearmed.git;a=blobdiff_plain;f=libpcsxcore%2Fpsxmem.c;h=27663f1fd685bc4fbea50bc24756ad5d9bc19685;hp=8c7c37b6b81c0206160588e3a800a1bbc51c6276;hb=8ad120c9c4dca424feac32098cb4af6a2c8f641f;hpb=fc8145b709406b946c1d5527ff89ed419596fd17

diff --git a/libpcsxcore/psxmem.c b/libpcsxcore/psxmem.c
index 8c7c37b6..27663f1f 100644
--- a/libpcsxcore/psxmem.c
+++ b/libpcsxcore/psxmem.c
@@ -24,6 +24,7 @@
 // TODO: Implement caches & cycle penalty.
 
 #include "psxmem.h"
+#include "psxmem_map.h"
 #include "r3000a.h"
 #include "psxhw.h"
 #include "debug.h"
@@ -33,6 +34,44 @@
 #define MAP_ANONYMOUS MAP_ANON
 #endif
 
+void *(*psxMapHook)(unsigned long addr, size_t size, int is_fixed,
+		enum psxMapTag tag);
+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;
+	void *req, *ret;
+
+	if (psxMapHook != NULL)
+		return psxMapHook(addr, size, is_fixed, tag);
+
+	if (is_fixed)
+		flags |= MAP_FIXED;
+
+	req = (void *)addr;
+	ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
+	if (ret == MAP_FAILED)
+		return NULL;
+
+	if (req != NULL && ret != req)
+		SysMessage("psxMap: warning: wanted to map @%p, got %p\n",
+			req, ret);
+
+	return ret;
+}
+
+void psxUnmap(void *ptr, size_t size, enum psxMapTag tag)
+{
+	if (psxUnmapHook != NULL) {
+		psxUnmapHook(ptr, size, tag);
+		return;
+	}
+
+	munmap(ptr, size);
+}
+
 s8 *psxM = NULL; // Kernel & User Memory (2 Meg)
 s8 *psxP = NULL; // Parallel Port (64K)
 s8 *psxR = NULL; // BIOS ROM (512K)
@@ -68,18 +107,22 @@ int psxMemInit() {
 	memset(psxMemRLUT, 0, 0x10000 * sizeof(void *));
 	memset(psxMemWLUT, 0, 0x10000 * sizeof(void *));
 
-	psxM = mmap((void *)0x80000000, 0x00220000,
-		PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+	psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM);
+#ifndef RAM_FIXED
+	if (psxM == NULL)
+		psxM = psxMap(0x70000000, 0x00210000, 0, MAP_TAG_RAM);
+#endif
+	if (psxM == NULL) {
+		SysMessage(_("mapping main RAM failed"));
+		return -1;
+	}
 
 	psxP = &psxM[0x200000];
-	psxH = &psxM[0x210000];
-
-	psxR = mmap((void *)0x9fc00000, 0x80000,
-		PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+	psxH = psxMap(0x1f800000, 0x10000, 1, MAP_TAG_OTHER);
+	psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER);
 
 	if (psxMemRLUT == NULL || psxMemWLUT == NULL || 
-		psxM != (void *)0x80000000 || psxR != (void *)0x9fc00000 ||
-		psxP == NULL || psxH == NULL) {
+		psxR == NULL || psxP == NULL || psxH != (void *)0x1f800000) {
 		SysMessage(_("Error allocating memory!"));
 		return -1;
 	}
@@ -134,8 +177,9 @@ void psxMemReset() {
 }
 
 void psxMemShutdown() {
-	munmap(psxM, 0x00220000);
-	munmap(psxR, 0x80000);
+	psxUnmap(psxM, 0x00210000, MAP_TAG_RAM);
+	psxUnmap(psxH, 0x1f800000, MAP_TAG_OTHER);
+	psxUnmap(psxR, 0x80000, MAP_TAG_OTHER);
 
 	free(psxMemRLUT);
 	free(psxMemWLUT);