From a2ad8cc5a68892c8ae7d1964f4081f755654d325 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Tue, 21 Aug 2012 02:04:46 +0300
Subject: [PATCH] use plat_mmap for RAM too

---
 frontend/common/plat.h |  2 +-
 frontend/linux/plat.c  |  4 +++-
 frontend/plugin_lib.c  |  2 +-
 libpcsxcore/psxmem.c   | 15 ++++++++++++---
 4 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/frontend/common/plat.h b/frontend/common/plat.h
index 416f8ac7..1fb87676 100644
--- a/frontend/common/plat.h
+++ b/frontend/common/plat.h
@@ -45,7 +45,7 @@ int  plat_is_dir(const char *path);
 int  plat_wait_event(int *fds_hnds, int count, int timeout_ms);
 void plat_sleep_ms(int ms);
 
-void *plat_mmap(unsigned long addr, size_t size, int need_exec);
+void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed);
 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize);
 void  plat_munmap(void *ptr, size_t size);
 
diff --git a/frontend/linux/plat.c b/frontend/linux/plat.c
index 044084ed..4ed1e65d 100644
--- a/frontend/linux/plat.c
+++ b/frontend/linux/plat.c
@@ -134,7 +134,7 @@ int plat_wait_event(int *fds_hnds, int count, int timeout_ms)
 	return ret;
 }
 
-void *plat_mmap(unsigned long addr, size_t size, int need_exec)
+void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
 {
 	static int hugetlb_disabled;
 	int prot = PROT_READ | PROT_WRITE;
@@ -144,6 +144,8 @@ void *plat_mmap(unsigned long addr, size_t size, int need_exec)
 	req = (void *)addr;
 	if (need_exec)
 		prot |= PROT_EXEC;
+	if (is_fixed)
+		flags |= MAP_FIXED;
 	if (size >= HUGETLB_THRESHOLD && !hugetlb_disabled)
 		flags |= MAP_HUGETLB;
 
diff --git a/frontend/plugin_lib.c b/frontend/plugin_lib.c
index c2e2ab4c..484d67bf 100644
--- a/frontend/plugin_lib.c
+++ b/frontend/plugin_lib.c
@@ -487,7 +487,7 @@ static void pl_get_layer_pos(int *x, int *y, int *w, int *h)
 
 static void *pl_mmap(unsigned int size)
 {
-	return plat_mmap(0, size, 0);
+	return plat_mmap(0, size, 0, 0);
 }
 
 static void pl_munmap(void *ptr, unsigned int size)
diff --git a/libpcsxcore/psxmem.c b/libpcsxcore/psxmem.c
index 1cabd53c..ddcd05be 100644
--- a/libpcsxcore/psxmem.c
+++ b/libpcsxcore/psxmem.c
@@ -60,6 +60,16 @@ u8 **psxMemRLUT = NULL;
 0xbfc0_0000-0xbfc7_ffff		BIOS Mirror (512K) Uncached
 */
 
+#if 1
+void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed);
+void  plat_munmap(void *ptr, size_t size);
+#else
+#define plat_mmap(addr, size, need_exec, is_fixed) \
+	mmap((void *)addr, size, PROT_WRITE | PROT_READ, \
+	MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0)
+#define plat_munmap munmap
+#endif
+
 int psxMemInit() {
 	int i;
 
@@ -68,8 +78,7 @@ int psxMemInit() {
 	memset(psxMemRLUT, 0, 0x10000 * sizeof(void *));
 	memset(psxMemWLUT, 0, 0x10000 * sizeof(void *));
 
-	psxM = mmap((void *)0x80000000, 0x00210000,
-		PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
+	psxM = plat_mmap(0x80000000, 0x00210000, 0, 1);
 #ifndef RAM_FIXED
 	if (psxM == MAP_FAILED)
 		psxM = mmap((void *)0x70000000, 0x00210000,
@@ -144,7 +153,7 @@ void psxMemReset() {
 }
 
 void psxMemShutdown() {
-	munmap(psxM, 0x00210000);
+	plat_munmap(psxM, 0x00210000);
 	munmap(psxH, 0x1f800000);
 	munmap(psxR, 0x80000);
 
-- 
2.39.2