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Add a method for allocating space from the code buffer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28064 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -140,6 +140,28 @@ public:
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/// allocateSpace - Allocate a block of space in the current output buffer,
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/// returning null (and setting conditions to indicate buffer overflow) on
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/// failure. Alignment is the alignment in bytes of the buffer desired.
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void *allocateSpace(intptr_t Size, unsigned Alignment) {
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if (Alignment == 0) Alignment = 1;
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// Move the current buffer ptr up to the specified alignment.
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CurBufferPtr =
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(unsigned char*)(((intptr_t)CurBufferPtr+Alignment-1) & ~(Alignment-1));
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void *Result = CurBufferPtr;
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// Allocate the space.
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CurBufferPtr += Size;
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// Check for buffer overflow.
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if (CurBufferPtr >= BufferEnd) {
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CurBufferPtr = BufferEnd;
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Result = 0;
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}
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return Result;
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}
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/// getCurrentPCValue - This returns the address that the next emitted byte
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/// will be output to.
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///
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