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According to the Procedure Call Standard for the ARM Architecture (AAPCS) - ABI r2.09 [1], §5.2.1.2, the stack pointer must be double-word-aligned at a public interface. The stack implementation being full-descending, this requires that the top of stack be double-word-aligned too. [1] http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042e/IHI0042E_aapcs.pdf Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com> |
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x86 |