Mesa (mesa_7_7_branch): rtasm: Play nicely with Windows' s Data Execution Prevention.
Jose Fonseca
jrfonseca at kemper.freedesktop.org
Sun Jan 3 11:03:54 UTC 2010
Module: Mesa
Branch: mesa_7_7_branch
Commit: 66c1de77ed58ea8856c5bc72c8e4c69e23aa04f2
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=66c1de77ed58ea8856c5bc72c8e4c69e23aa04f2
Author: José Fonseca <jfonseca at vmware.com>
Date: Sun Jan 3 11:02:12 2010 +0000
rtasm: Play nicely with Windows's Data Execution Prevention.
---
src/gallium/auxiliary/rtasm/rtasm_execmem.c | 32 +++++++++++++++++++++++++-
1 files changed, 30 insertions(+), 2 deletions(-)
diff --git a/src/gallium/auxiliary/rtasm/rtasm_execmem.c b/src/gallium/auxiliary/rtasm/rtasm_execmem.c
index 01811d5..ffed768 100644
--- a/src/gallium/auxiliary/rtasm/rtasm_execmem.c
+++ b/src/gallium/auxiliary/rtasm/rtasm_execmem.c
@@ -41,6 +41,12 @@
#define MAP_ANONYMOUS MAP_ANON
#endif
+#if defined(PIPE_OS_WINDOWS)
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN 1
+#endif
+#include <windows.h>
+#endif
#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD) || defined(PIPE_OS_SOLARIS)
@@ -118,7 +124,29 @@ rtasm_exec_free(void *addr)
}
-#else /* PIPE_OS_LINUX || PIPE_OS_BSD || PIPE_OS_SOLARIS */
+#elif defined(PIPE_OS_WINDOWS)
+
+
+/*
+ * Avoid Data Execution Prevention.
+ */
+
+void *
+rtasm_exec_malloc(size_t size)
+{
+ return VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
+}
+
+
+void
+rtasm_exec_free(void *addr)
+{
+ VirtualFree(addr, 0, MEM_RELEASE);
+}
+
+
+#else
+
/*
* Just use regular memory.
@@ -138,4 +166,4 @@ rtasm_exec_free(void *addr)
}
-#endif /* PIPE_OS_LINUX || PIPE_OS_BSD || PIPE_OS_SOLARIS */
+#endif
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