Matt Turner b39c748d9d alpha: read $gp and $sp explicitly for clang ... clang honors a local `register unsigned long x __asm__("$N")` variable only where it appears as an inline-asm operand; merely reading it does not produce the contents of that register. So trap_init() passed an undefined global pointer to PAL_wrkgp, and load_PCB() stored an undefined stack pointer into the PCB that swpctx then loaded. Either one wedges an early boot. Read the registers explicitly instead: an inline mov for $gp in trap_init(), and the file-scope current_stack_pointer for $sp in load_PCB(). A file-scope register-asm variable is the form clang does support. Signed-off-by: Matt Turner <mattst88@gmail.com> Reviewed-by: Maciej W. Rozycki <macro@orcam.me.uk> Reviewed-by: Magnus Lindholm <linmag7@gmail.com> Tested-by: Magnus Lindholm <linmag7@gmail.com> Link: https://lore.kernel.org/r/20260803-alpha-clang-v1-2-1c4ba5ba7a64@gmail.com Signed-off-by: Magnus Lindholm <linmag7@gmail.com>		2026-08-16 16:00:00 +02:00
..
fault.c	alpha: align stack for page fault and user unaligned trap handlers	2025-02-14 14:06:04 -05:00
init.c	alpha: read $gp and $sp explicitly for clang	2026-08-16 16:00:00 +02:00
Makefile	alpha: fix user-space corruption during memory compaction	2026-01-24 10:35:52 +01:00
tlbflush.c	alpha: fix user-space corruption during memory compaction	2026-01-24 10:35:52 +01:00