Annotate functions with ASM_FUNC() so that they are emitted into
separate sections.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
From the AArch64 Procedure Call Standard (ARM IHI 0055B):
5.2.2.1 Universal stack constraints
At all times the following basic constraints must hold:
- SP mod 16 = 0. The stack must be quad-word aligned.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16327 6f19259b-4bc3-4df7-8a09-765794883524
The SMC helper functions were buggy as they were assuming that
the values in x1-x7 registers were preserved across an SMC call,
which is not the case. This patch fixes this issue.
It also simplifies the code by providing only 1 version of the SMC
helper function. We used to have 4 versions depending on the number
of arguments. The problem with this approach was that the number of
arguments also dictated the number of return values, which is
completely unrelated. E.g. you can have an SMC call that takes
1 argument but returns 4 values.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15748 6f19259b-4bc3-4df7-8a09-765794883524
Ard Biesheuvel
Olivier Martin
Harry Liebel