// TODO: Implement caches & cycle penalty.
#include "psxmem.h"
+#include "psxmem_map.h"
#include "r3000a.h"
#include "psxhw.h"
+#include "debug.h"
#include <sys/mman.h>
#ifndef MAP_ANONYMOUS
#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;
+ int tried_to_align = 0;
+ unsigned long mask;
+ void *req, *ret;
+
+retry:
+ if (psxMapHook != NULL) {
+ ret = psxMapHook(addr, size, is_fixed, tag);
+ goto out;
+ }
+
+ /* avoid MAP_FIXED, it overrides existing mappings.. */
+ /* 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;
+
+out:
+ if (addr != 0 && ret != (void *)addr) {
+ SysMessage("psxMap: warning: wanted to map @%08x, got %p\n",
+ addr, ret);
+
+ if (is_fixed) {
+ psxUnmap(ret, size, tag);
+ return NULL;
+ }
+
+ if (ret != NULL && ((addr ^ (long)ret) & 0x00ffffff)
+ && !tried_to_align)
+ {
+ psxUnmap(ret, size, tag);
+
+ // try to use similarly aligned memory instead
+ // (recompiler needs this)
+ mask = (addr - 1) & ~addr & 0x07ffffff;
+ addr = (unsigned long)(ret + mask) & ~mask;
+ tried_to_align = 1;
+ goto retry;
+ }
+ }
+
+ return ret;
+}
+
+void psxUnmap(void *ptr, size_t size, enum psxMapTag tag)
+{
+ if (psxUnmapHook != NULL) {
+ psxUnmapHook(ptr, size, tag);
+ return;
+ }
+
+ if (ptr)
+ munmap(ptr, size);
+}
+
s8 *psxM = NULL; // Kernel & User Memory (2 Meg)
s8 *psxP = NULL; // Parallel Port (64K)
s8 *psxR = NULL; // BIOS ROM (512K)
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
+#ifdef __BLACKBERRY_QNX__
+ if (psxM == NULL)
+ psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM);
+#else
+ if (psxM == NULL)
+ psxM = psxMap(0x78000000, 0x00210000, 0, MAP_TAG_RAM);
+#endif
+#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!"));
+ psxMemShutdown();
return -1;
}
}
void psxMemShutdown() {
- munmap(psxM, 0x00220000);
- munmap(psxR, 0x80000);
+ psxUnmap(psxM, 0x00210000, MAP_TAG_RAM); psxM = NULL;
+ psxUnmap(psxH, 0x10000, MAP_TAG_OTHER); psxH = NULL;
+ psxUnmap(psxR, 0x80000, MAP_TAG_OTHER); psxR = NULL;
- free(psxMemRLUT);
- free(psxMemWLUT);
+ free(psxMemRLUT); psxMemRLUT = NULL;
+ free(psxMemWLUT); psxMemWLUT = NULL;
}
static int writeok = 1;
u32 t;
t = mem >> 16;
- if (t == 0x1f80) {
- if (mem < 0x1f801000)
+ if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
+ if ((mem & 0xffff) < 0x400)
return psxHu8(mem);
else
return psxHwRead8(mem);
u32 t;
t = mem >> 16;
- if (t == 0x1f80) {
- if (mem < 0x1f801000)
+ if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
+ if ((mem & 0xffff) < 0x400)
return psxHu16(mem);
else
return psxHwRead16(mem);
u32 t;
t = mem >> 16;
- if (t == 0x1f80) {
- if (mem < 0x1f801000)
+ if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
+ if ((mem & 0xffff) < 0x400)
return psxHu32(mem);
else
return psxHwRead32(mem);
u32 t;
t = mem >> 16;
- if (t == 0x1f80) {
- if (mem < 0x1f801000)
+ if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
+ if ((mem & 0xffff) < 0x400)
psxHu8(mem) = value;
else
psxHwWrite8(mem, value);
u32 t;
t = mem >> 16;
- if (t == 0x1f80) {
- if (mem < 0x1f801000)
+ if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
+ if ((mem & 0xffff) < 0x400)
psxHu16ref(mem) = SWAPu16(value);
else
psxHwWrite16(mem, value);
// if ((mem&0x1fffff) == 0x71E18 || value == 0x48088800) SysPrintf("t2fix!!\n");
t = mem >> 16;
- if (t == 0x1f80) {
- if (mem < 0x1f801000)
+ if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
+ if ((mem & 0xffff) < 0x400)
psxHu32ref(mem) = SWAPu32(value);
else
psxHwWrite32(mem, value);
u32 t;
t = mem >> 16;
- if (t == 0x1f80) {
- if (mem < 0x1f801000)
+ if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
+ if ((mem & 0xffff) < 0x400)
return (void *)&psxH[mem];
else
return NULL;