From 190f0807911663b82006f86134715bed99a2238e Mon Sep 17 00:00:00 2001
From: reimar <reimar@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Sun, 3 Dec 2006 20:26:00 +0000
Subject: mmap memory area for generated code to avoid crashes on machines
 which support noexec

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@21478 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 loader/win32.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'loader')

diff --git a/loader/win32.c b/loader/win32.c
index 60b35d724f..aacd71ed4f 100644
--- a/loader/win32.c
+++ b/loader/win32.c
@@ -70,6 +70,9 @@ for DLL to know too much about its environment.
 #include <kstat.h>
 #endif
 
+#include <sys/mman.h>
+#include "osdep/mmap_anon.h"
+
 #if HAVE_VSSCANF
 int vsscanf( const char *str, const char *format, va_list ap);
 #else
@@ -5299,14 +5302,18 @@ static void ext_stubs(void)
 #define MAX_STUB_SIZE 0x60
 #define MAX_NUM_STUBS 200
 static int pos=0;
-static char extcode[MAX_NUM_STUBS * MAX_STUB_SIZE];
+static char *extcode = NULL;
 
 static void* add_stub(void)
 {
     int i;
     int found = 0;
     // generated code in runtime!
-    char* answ = extcode + pos * MAX_STUB_SIZE;
+    char* answ;
+    if (!extcode)
+      extcode = mmap_anon(NULL, MAX_NUM_STUBS * MAX_STUB_SIZE,
+                  PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE, 0);
+    answ = extcode + pos * MAX_STUB_SIZE;
     if (pos >= MAX_NUM_STUBS) {
       printf("too many stubs, expect crash\n");
       return NULL;
-- 
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