From: notaz <notasas@gmail.com>
Date: Mon, 1 Apr 2013 22:29:57 +0000 (+0300)
Subject: avoid MAP_FIXED, log mappings
X-Git-Tag: r20~95
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0069615fdda3a28da547a191bef990256620ff69;p=pcsx_rearmed.git

avoid MAP_FIXED, log mappings

MAP_FIXED overrides existing mappings, we don't want that
---

diff --git a/libpcsxcore/new_dynarec/emu_if.c b/libpcsxcore/new_dynarec/emu_if.c
index 324071de..cb95cb1c 100644
--- a/libpcsxcore/new_dynarec/emu_if.c
+++ b/libpcsxcore/new_dynarec/emu_if.c
@@ -260,6 +260,7 @@ static int ari64_init()
 {
 	extern void (*psxCP2[64])();
 	extern void psxNULL();
+	extern u_char *out;
 	size_t i;
 
 	new_dynarec_init();
@@ -289,6 +290,10 @@ static int ari64_init()
 	zeromem_ptr = zero_mem;
 	scratch_buf_ptr = scratch_buf;
 
+	SysPrintf("Mapped (RAM/scrp/ROM/LUTs/TC):\n");
+	SysPrintf("%08x/%08x/%08x/%08x/%08x\n",
+		psxM, psxH, psxR, mem_rtab, out);
+
 	return 0;
 }
 
@@ -388,6 +393,8 @@ int new_dynarec_hacks;
 void *psxH_ptr;
 void *zeromem_ptr;
 u8 zero_mem[0x1000];
+u_char *out;
+void *mem_rtab;
 void *scratch_buf_ptr;
 void new_dynarec_init() { (void)ari64_execute; }
 void new_dyna_start() {}
diff --git a/libpcsxcore/psxmem.c b/libpcsxcore/psxmem.c
index 62bbe26d..4da0cf4c 100644
--- a/libpcsxcore/psxmem.c
+++ b/libpcsxcore/psxmem.c
@@ -52,8 +52,9 @@ retry:
 		goto out;
 	}
 
-	if (is_fixed)
-		flags |= MAP_FIXED;
+	/* 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);
@@ -65,6 +66,11 @@ out:
 		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)
 		{