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Add a comment, and fix a bug where AllocateRW recurred to AllocateRWX instead of itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48677 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -57,6 +57,14 @@ namespace sys {
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const MemoryBlock *NearBlock,
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std::string *ErrMsg = 0);
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/// This method allocates a block of Read/Write memory. This memory
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/// needs to have executable permissions set before it can be used
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/// to execute JIT'ed code.
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///
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/// On success, this returns a non-null memory block, otherwise it returns
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/// a null memory block and fills in *ErrMsg.
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///
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/// @brief Allocate Read/Write/Execute memory.
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static MemoryBlock AllocateRW(unsigned NumBytes,
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const MemoryBlock *NearBlock,
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std::string *ErrMsg = 0);
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@ -103,7 +103,7 @@ llvm::sys::Memory::AllocateRW(unsigned NumBytes, const MemoryBlock* NearBlock,
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flags, fd, 0);
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if (pa == MAP_FAILED) {
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if (NearBlock) //Try again without a near hint
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return AllocateRWX(NumBytes, 0);
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return AllocateRW(NumBytes, 0);
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MakeErrMsg(ErrMsg, "Can't allocate RWX Memory");
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return MemoryBlock();
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