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23 October 2021, 00:29:24 UTC
Revision aeed41a9371ee02257b608eb06a9058507a7d0f4 authored by Marc Zyngier on 19 October 2012, 16:33:27 UTC, committed by Catalin Marinas on 20 October 2012, 10:12:01 UTC 
arm64: fix alignment padding in assembly code
 
An interesting effect of using the generic version of linkage.h
is that the padding is defined in terms of x86 NOPs, which can have
even more interesting effects when the assembly code looks like this:

ENTRY(func1)
	mov	x0, xzr
ENDPROC(func1)
	// fall through
ENTRY(func2)
	mov	x0, #1
	ret
ENDPROC(func2)

Admittedly, the code is not very nice. But having code from another
architecture doesn't look completely sane either.

The fix is to add arm64's version of linkage.h, which causes the insertion
of proper AArch64 NOPs.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
1 parent 8f34a1d
History
Tip revision: aeed41a9371ee02257b608eb06a9058507a7d0f4 authored by Marc Zyngier on 19 October 2012, 16:33:27 UTC
arm64: fix alignment padding in assembly code
Tip revision: aeed41a
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