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Faster W^X policy for apple silicon macs

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tevador
2020-11-30 11:04:17 +01:00
parent 5bfd021e8f
commit 8de238adcd
1 changed files with 10 additions and 0 deletions
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src/virtual_memory.cpp
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@@ -35,6 +35,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#else
#ifdef __APPLE__
#include <mach/vm_statistics.h>
#include <TargetConditionals.h>
#include <pthread.h>
#endif
#include <sys/types.h>
#include <sys/mman.h>
@@ -129,11 +131,19 @@ static inline void pageProtect(void* ptr, std::size_t bytes, int rules) {
}
void setPagesRW(void* ptr, std::size_t bytes) {
#if defined(__APPLE__) && defined(__aarch64__) && TARGET_OS_OSX
pthread_jit_write_protect_np(false);
#else
pageProtect(ptr, bytes, PAGE_READWRITE);
#endif
}
void setPagesRX(void* ptr, std::size_t bytes) {
#if defined(__APPLE__) && defined(__aarch64__) && TARGET_OS_OSX
pthread_jit_write_protect_np(true);
#else
pageProtect(ptr, bytes, PAGE_EXECUTE_READ);
#endif
}
void setPagesRWX(void* ptr, std::size_t bytes) {