Commit Graph
6 Commits
Author SHA1 Message Date
Nicola Vetrini 820ee3ec4d x86: add deviation for asm-only functions
As stated in rules.rst, functions used only in asm modules
are allowed to have no prior declaration visible when being
defined, hence these functions are marked with an
'asmlinkage' macro, which is then deviated for MISRA C:2012
Rule 8.4.

Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
[stefano: improve deviation text]
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Jan Beulich <jbeulich@suse.com>
2023-11-21 17:50:57 -08:00
Federico Serafini 83e9e30510 automation/eclair: add a deviation for MISRA C:2012 Rule 8.6
Update ECLAIR configuration to take into account the search
procedure adopted by Unix linkers.
Update deviations.rst accordingly and tag Rule 8.6 as "clean".

Signed-off-by: Federico Serafini <federico.serafini@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
2023-11-17 18:16:34 -08:00
Nicola Vetrini 26cdd09801 xen: address violations of Rule 11.9
The constant 0 is used instead of NULL in '__ACCESS_ONCE' as a
compile-time check to detect non-scalar types; its usage for this
purpose is deviated.

Furthermore, the 'typeof_field' macro is introduced as a general way
to access the type of a struct member without declaring a variable
of struct type. Both this macro and 'sizeof_field' are moved to
'xen/macros.h'.

No functional change intended.

Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
2023-11-17 18:11:11 -08:00
Nicola Vetrini 4bee3b9c2c xen: Add deviations for MISRA C:2012 Rule 7.1
As specified in rules.rst, these constants can be used
in the code.

Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Jan Beulich <jbeulich@suse.com>
2023-11-17 18:01:00 -08:00
Nicola Vetrini b739e2067b xen/include: add macro ISOLATE_LSB
The purpose of this macro is to encapsulate the well-known expression
'x & -x' that in 2's complement architectures on unsigned integers will
give a mask where only the least significant nonzero bit of 'x' is set,
or 0 if none are set.

A deviation for ECLAIR is also introduced.

Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
2023-11-16 09:18:23 +01:00
Nicola Vetrini 730406ab81 docs/misra: add deviations.rst to document additional deviations.
This file contains the deviation that are not marked by
a deviation comment, as specified in
docs/misra/documenting-violations.rst.

Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Release-acked-by: Henry Wang <Henry.Wang@arm.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
2023-10-13 16:25:38 -07:00