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The System V ABI for both x86 and x86_64 requires that the stack pointer is 16-byte aligned on entry. Previously we did not align the stack pointer properly. As far as "main" was concerned the stack alignment was correct even without this patch due to how the C++ _start function and the kernel interacted, i.e. the kernel misaligned the stack as far as the ABI was concerned but that misalignment (read: it was properly aligned for a regular function call - but misaligned in terms of what the ABI dictates) was actually expected by our _start function. |
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.. | ||
CMakeLists.txt | ||
main.cpp | ||
misc.cpp | ||
misc.h |