[PATCH] arm: Replace ASSEMBLY with ASSEMBLER in uapi headers

[Maciej W. Rozycki]

On Wed, 18 Feb 2026, Nick Huang wrote:

>   ASSEMBLY is defined only by the kernel Makefile and thus not suitable for uapi headers
>   unless userspace Makefiles also define it. Switch to ASSEMBLER, which the compiler sets
>   automatically when compiling assembly. Reference: commit
>   639f08fc20c92c2cc373b2b4d065185daa9633e3

 While not a regression, as this used not to work anyway with ASSEMBLY, 
the use of ASSEMBLER requires sufficiently new a compiler and in principle 
the userland may have old tools installed for whatever reason.  So perhaps 
#error is in order if the compiler is not recent enough, for a complete 
fix?

 FWIW GCC 2.95.x didn't yet have it, it landed ultimately with GCC 3.0.  
Do we care?  For instance the GNU C library still does for its installed 
headers.

  Maciej