[xen master] xen: add header guards to generated asm generic headers

[patchbot@xxxxxxx]

commit ee79f378311b8bed0e848e0598190ba70b227fce
Author:     Stefano Stabellini <sstabellini@xxxxxxxxxx>
AuthorDate: Fri Jun 6 13:34:17 2025 -0700
Commit:     Stefano Stabellini <stefano.stabellini@xxxxxxx>
CommitDate: Fri Jun 20 19:20:05 2025 -0700

    xen: add header guards to generated asm generic headers
    
    MISRA D4.10 requires to have proper header guards in place in all header
    files. Add header guards for generated asm generic headers as well.
    
    Suggested-by: Jan Beulich <jbeulich@xxxxxxxx>
    Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/scripts/Makefile.asm-generic | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/xen/scripts/Makefile.asm-generic b/xen/scripts/Makefile.asm-generic
index b0d356bfa3..b082801808 100644
--- a/xen/scripts/Makefile.asm-generic
+++ b/xen/scripts/Makefile.asm-generic
@@ -32,7 +32,14 @@ old-headers := $(wildcard $(obj)/*.h)
 unwanted    := $(filter-out $(generic-y) $(generated-y),$(old-headers))
 
 quiet_cmd_wrap = WRAP    $@
-      cmd_wrap = echo "\#include <asm-generic/$*.h>" > $@
+      cmd_wrap = \
+       arch=$$(echo $@ | sed -n 's:.*arch/\([^/]*\)/.*:\1:p' | tr a-z A-Z); \
+       upper=$$(echo $*.h | tr a-z A-Z | tr '/.' '__'); \
+       echo "\#ifndef $${arch}_GENERIC_$${upper}" > $@.new; \
+       echo "\#define $${arch}_GENERIC_$${upper}" >> $@.new; \
+       echo "\#include <asm-generic/$*.h>" >> $@.new; \
+       echo "\#endif /* $${arch}_GENERIC_$${upper} */" >> $@.new; \
+       mv -f $@.new $@
 
 quiet_cmd_remove = REMOVE  $(unwanted)
       cmd_remove = rm -f $(unwanted)
--
generated by git-patchbot for /home/xen/git/xen.git#master