* Arnd Bergmann <a...@kernel.org> [210308 15:35]: > From: Arnd Bergmann <a...@arndb.de> > > The clang integrated assembler fails to build one file with > a complex asm instruction: > > arch/arm/mach-omap1/ams-delta-fiq-handler.S:249:2: error: invalid > instruction, any one of the following would fix this: > mov r10, #(1 << (((NR_IRQS_LEGACY + 12) - NR_IRQS_LEGACY) % 32)) @ set > deferred_fiq bit > ^ > arch/arm/mach-omap1/ams-delta-fiq-handler.S:249:2: note: instruction > requires: armv6t2 > mov r10, #(1 << (((NR_IRQS_LEGACY + 12) - NR_IRQS_LEGACY) % 32)) @ set > deferred_fiq bit > ^ > arch/arm/mach-omap1/ams-delta-fiq-handler.S:249:2: note: instruction > requires: thumb2 > mov r10, #(1 << (((NR_IRQS_LEGACY + 12) - NR_IRQS_LEGACY) % 32)) @ set > deferred_fiq bit > ^ > > The problem is that 'NR_IRQS_LEGACY' is not defined here. Apparently > gas does not care because we first add and then subtract this number, > leading to the immediate value to be the same regardless of the > specific definition of NR_IRQS_LEGACY. > > Neither the way that 'gas' just silently builds this file, nor the > way that clang IAS makes nonsensical suggestions for how to fix it > is great. Fortunately there is an easy fix, which is to #include > the header that contains the definition.
Acked-by: Tony Lindgren <t...@atomide.com>
