diff options
Diffstat (limited to 'llvm/lib/System/Unix')
| -rw-r--r-- | llvm/lib/System/Unix/Memory.inc | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/llvm/lib/System/Unix/Memory.inc b/llvm/lib/System/Unix/Memory.inc index cf0157d5778..646311d8cd6 100644 --- a/llvm/lib/System/Unix/Memory.inc +++ b/llvm/lib/System/Unix/Memory.inc @@ -76,7 +76,7 @@ llvm::sys::Memory::AllocateRWX(unsigned NumBytes, const MemoryBlock* NearBlock, (vm_size_t)(pageSize*NumPages), 0, VM_PROT_READ | VM_PROT_EXECUTE | VM_PROT_COPY); if (KERN_SUCCESS != kr) { - MakeErrMsg(ErrMsg, "vm_protect max RWX failed\n"); + MakeErrMsg(ErrMsg, "vm_protect max RX failed\n"); return sys::MemoryBlock(); } @@ -103,3 +103,27 @@ bool llvm::sys::Memory::ReleaseRWX(MemoryBlock &M, std::string *ErrMsg) { return false; } +bool llvm::sys::Memory::setWritable (MemoryBlock &M, std::string *ErrMsg) { +#if defined(__APPLE__) && defined(__arm__) + if (M.Address == 0 || M.Size == 0) return false; + sys::Memory::InvalidateInstructionCache(M.Address, M.Size); + kern_return_t kr = vm_protect(mach_task_self(), (vm_address_t)M.Address, + (vm_size_t)M.Size, 0, VM_PROT_READ | VM_PROT_WRITE); + return KERN_SUCCESS == kr; +#else + return true; +#endif +} + +bool llvm::sys::Memory::setExecutable (MemoryBlock &M, std::string *ErrMsg) { +#if defined(__APPLE__) && defined(__arm__) + if (M.Address == 0 || M.Size == 0) return false; + sys::Memory::InvalidateInstructionCache(M.Address, M.Size); + kern_return_t kr = vm_protect(mach_task_self(), (vm_address_t)M.Address, + (vm_size_t)M.Size, 0, VM_PROT_READ | VM_PROT_EXECUTE | VM_PROT_COPY); + return KERN_SUCCESS == kr; +#else + return false; +#endif +} + |
