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--- Common/MemoryUtil.cpp.orig 2015-11-19 15:07:48 UTC
+++ Common/MemoryUtil.cpp
@@ -32,6 +32,10 @@
#include <mach/vm_param.h>
#endif
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#include <sys/resource.h>
+#endif
+
#ifndef _WIN32
#include <unistd.h>
#endif
@@ -149,6 +153,21 @@ void *AllocateExecutableMemory(size_t si
map_hint = (char*)round_page(&hint_location) - 0x20000000; // 0.5gb lower than our approximate location
else
map_hint = (char*)0x20000000; // 0.5GB mark in memory
+
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+ // XXX Fix maximum data segment size (data + BSS + heap) to 256 MB.
+ // This allows avoiding calling mmap(2) with MAP_FIXED.
+ // On FreeBSD, without lowering this limit, calling mmap(2)
+ // without MAP_FIXED will result in getting an address just
+ // beyond maximum data segment size which will be far beyond
+ // the desired 2 GB.
+ struct rlimit limit;
+ limit.rlim_cur = 0x10000000; // 256 MB
+ limit.rlim_max = 0x10000000;
+ if(setrlimit(RLIMIT_DATA, &limit) != 0) {
+ PanicAlert("Failed to lower maximum data segment size");
+ }
+#endif
}
else if ((uintptr_t) map_hint > 0xFFFFFFFFULL)
{
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