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On Darwin ARM, memory needs special handling to do JIT. This patch expands

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this handling to work properly for modifying stub functions, relocations
back to entry points after JIT compilation, etc..


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57013 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2008-10-03 16:17:20 +00:00
parent 48b828fdb4
commit cce6c297c5
6 changed files with 66 additions and 15 deletions
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15
lib/ExecutionEngine/JIT/JITMemoryManager.cpp
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@ -365,6 +365,21 @@ namespace {
// Finally, remove this entry from TableBlocks.
TableBlocks.erase(I);
}
/// setMemoryWritable - When code generation is in progress,
/// the code pages may need permissions changed.
void setMemoryWritable(void)
{
for (unsigned i = 0, e = Blocks.size(); i != e; ++i)
sys::Memory::setWritable(Blocks[i]);
}
/// setMemoryExecutable - When code generation is done and we're ready to
/// start execution, the code pages may need permissions changed.
void setMemoryExecutable(void)
{
for (unsigned i = 0, e = Blocks.size(); i != e; ++i)
sys::Memory::setExecutable(Blocks[i]);
}
};
}