diff mbox series

[XEN,v5,05/17] xen/x86: address violations of MISRA C:2012 Directive 4.10

Message ID 4395577d2a07f6edaebbef937cb96028bb92de31.1721720583.git.alessandro.zucchelli@bugseng.com (mailing list archive)
State New
Headers show
Series xen: address violation of MISRA C:2012 Directive 4.10 | expand

Commit Message

Alessandro Zucchelli July 23, 2024, 8:14 a.m. UTC 
From: Simone Ballarin <simone.ballarin@bugseng.com>

Add or move inclusion guards to address violations of
MISRA C:2012 Directive 4.10 ("Precautions shall be taken in order
to prevent the contents of a header file being included more than
once").

Inclusion guards must appear at the beginning of the headers
(comments are permitted anywhere).

Mechanical change.

Signed-off-by: Simone Ballarin <simone.ballarin@bugseng.com>
Signed-off-by: Maria Celeste Cesario  <maria.celeste.cesario@bugseng.com>
Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Signed-off-by: Alessandro Zucchelli <alessandro.zucchelli@bugseng.com>

---
Changes in v5:
- remove hard tab that slipped in the makefile
- edit inclusion guards and makefile
Changes in v4:
- modified inclusion guards and makefile.
Changes in v3:
- remove trailing underscores
- change inclusion guard name to adhere to the new standard
Changes in v2:
- remove extra blanks
- drop changes in C files

Note:
Changes in Makefile were not strictly necessary in v1 and a maintainer
asked to removing them since there was a deviation for generated headers.
Now, in v2, they are required since the deviation has been removed by
another patch of this series.
---
 xen/arch/x86/Makefile              | 9 +++++----
 xen/arch/x86/cpu/cpu.h             | 5 +++++
 xen/arch/x86/x86_64/mmconfig.h     | 5 +++++
 xen/arch/x86/x86_emulate/private.h | 5 +++++
 4 files changed, 20 insertions(+), 4 deletions(-)

Comments

Jan Beulich July 24, 2024, 3:53 p.m. UTC | #1 
On 23.07.2024 10:14, Alessandro Zucchelli wrote:
> From: Simone Ballarin <simone.ballarin@bugseng.com>
> 
> Add or move inclusion guards to address violations of
> MISRA C:2012 Directive 4.10 ("Precautions shall be taken in order
> to prevent the contents of a header file being included more than
> once").
> 
> Inclusion guards must appear at the beginning of the headers
> (comments are permitted anywhere).
> 
> Mechanical change.
> 
> Signed-off-by: Simone Ballarin <simone.ballarin@bugseng.com>
> Signed-off-by: Maria Celeste Cesario  <maria.celeste.cesario@bugseng.com>
> Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
> Signed-off-by: Alessandro Zucchelli <alessandro.zucchelli@bugseng.com>

Provided the description of the scheme itself goes in first:
Acked-by: Jan Beulich <jbeulich@suse.com>
diff mbox series

Patch

diff --git a/xen/arch/x86/Makefile b/xen/arch/x86/Makefile
index d902fb7acc..31197dfd96 100644
--- a/xen/arch/x86/Makefile
+++ b/xen/arch/x86/Makefile
@@ -260,17 +260,18 @@  $(objtree)/arch/x86/include/asm/asm-macros.h: $(obj)/asm-macros.i $(src)/Makefil
 	$(call filechk,asm-macros.h)
 
 define filechk_asm-macros.h
+    guard=$$(echo ASM__${SRCARCH}__ASM_MACROS_H | tr a-z A-Z);  \
+    echo '#ifndef $$guard'; \
+    echo '#define $$guard'; \
     echo '#if 0'; \
     echo '.if 0'; \
     echo '#endif'; \
-    echo '#ifndef __ASM_MACROS_H__'; \
-    echo '#define __ASM_MACROS_H__'; \
     echo 'asm ( ".include \"$@\"" );'; \
-    echo '#endif /* __ASM_MACROS_H__ */'; \
     echo '#if 0'; \
     echo '.endif'; \
     cat $<; \
-    echo '#endif'
+    echo '#endif'; \
+    echo '#endif /* $$guard */'
 endef
 
 $(obj)/efi.lds: AFLAGS-y += -DEFI
diff --git a/xen/arch/x86/cpu/cpu.h b/xen/arch/x86/cpu/cpu.h
index 8be65e975a..8e52f24e10 100644
--- a/xen/arch/x86/cpu/cpu.h
+++ b/xen/arch/x86/cpu/cpu.h
@@ -1,3 +1,6 @@ 
+#ifndef X86__CPU__CPU_H
+#define X86__CPU__CPU_H
+
 /* attempt to consolidate cpu attributes */
 struct cpu_dev {
 	void		(*c_early_init)(struct cpuinfo_x86 *c);
@@ -26,3 +29,5 @@  void amd_init_spectral_chicken(void);
 void detect_zen2_null_seg_behaviour(void);
 
 void intel_unlock_cpuid_leaves(struct cpuinfo_x86 *c);
+
+#endif /* X86__CPU__CPU_H */
diff --git a/xen/arch/x86/x86_64/mmconfig.h b/xen/arch/x86/x86_64/mmconfig.h
index 3da4b21e9b..0b51d2179e 100644
--- a/xen/arch/x86/x86_64/mmconfig.h
+++ b/xen/arch/x86/x86_64/mmconfig.h
@@ -5,6 +5,9 @@ 
  * Author: Allen Kay <allen.m.kay@intel.com> - adapted from linux
  */
 
+#ifndef X86__X86_64__MMCONFIG_H
+#define X86__X86_64__MMCONFIG_H
+
 #define PCI_DEVICE_ID_INTEL_E7520_MCH    0x3590
 #define PCI_DEVICE_ID_INTEL_82945G_HB    0x2770
 
@@ -72,3 +75,5 @@  int pci_mmcfg_reserved(uint64_t address, unsigned int segment,
 int pci_mmcfg_arch_init(void);
 int pci_mmcfg_arch_enable(unsigned int idx);
 void pci_mmcfg_arch_disable(unsigned int idx);
+
+#endif /* X86__X86_64__MMCONFIG_H */
diff --git a/xen/arch/x86/x86_emulate/private.h b/xen/arch/x86/x86_emulate/private.h
index 0fa26ba00a..940d511b06 100644
--- a/xen/arch/x86/x86_emulate/private.h
+++ b/xen/arch/x86/x86_emulate/private.h
@@ -6,6 +6,9 @@ 
  * Copyright (c) 2005-2007 XenSource Inc.
  */
 
+#ifndef X86__X86_EMULATE__PRIVATE_H
+#define X86__X86_EMULATE__PRIVATE_H
+
 #ifdef __XEN__
 
 # include <xen/bug.h>
@@ -836,3 +839,5 @@  static inline int read_ulong(enum x86_segment seg,
     *val = 0;
     return ops->read(seg, offset, val, bytes, ctxt);
 }
+
+#endif /* X86__X86_EMULATE__PRIVATE_H */