forked from OSchip/llvm-project
3215f7c7a8
Fix clear_cache_test to work on NetBSD with PaX MPROTECT enabled, that is when creating W+X mmaps is prohibited. Use the recommended solution: create two mappings for the same memory area, make one of them RW, while the other RX. Copy the function into the RW area but run it from the RX area. In order to implement this, I've split the pointer variables to 'write_buffer' and 'execution_buffer'. Both are separate pointers on NetBSD, while they have the same value on other systems. I've also split the memcpy_f() into two: new memcpy_f() that only takes care of copying memory and discards the (known) result of memcpy(), and realign_f() that applies ARM realignment to the given pointer. Again, there should be no difference on non-NetBSD systems but on NetBSD copying is done on write_buffer, while realignment on pointer to the execution_buffer. I have tested this change on NetBSD and Linux. Differential Revision: https://reviews.llvm.org/D72578 |
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| .. | ||
| TestCases/Darwin | ||
| Unit | ||
| timing | ||
| CMakeLists.txt | ||
| lit.cfg.py | ||
| lit.site.cfg.py.in | ||