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Preliminary support for systems which require changing JIT memory regions privilege from read / write to read / executable.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56303 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-09-18 07:54:21 +00:00
parent 057d0c3535
commit bc4707a255
6 changed files with 54 additions and 1 deletions
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lib/System/Memory.cpp
+11
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@@ -58,3 +58,14 @@ void llvm::sys::Memory::InvalidateInstructionCache(const void *Addr,
#endif // end PPC
}
bool llvm::sys::Memory::SetRXPrivilege(const void *Addr, size_t Size) {
#if defined(__APPLE__) && defined(__arm__)
kern_return_t kr = vm_protect(mach_task_self(), (vm_address_t)Addr,
(vm_size_t)Size, 0,
VM_PROT_READ | VM_PROT_EXECUTE | VM_PROT_COPY);
return KERN_SUCCESS == kr;
#else
return true;
#endif
}