diff options
Diffstat (limited to 'arch/ia64/kernel/mca_drv_asm.S')
| -rw-r--r-- | arch/ia64/kernel/mca_drv_asm.S | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/ia64/kernel/mca_drv_asm.S b/arch/ia64/kernel/mca_drv_asm.S new file mode 100644 index 000000000000..bcfa05acc561 --- /dev/null +++ b/arch/ia64/kernel/mca_drv_asm.S @@ -0,0 +1,45 @@ +/* + * File: mca_drv_asm.S + * Purpose: Assembly portion of Generic MCA handling + * + * Copyright (C) 2004 FUJITSU LIMITED + * Copyright (C) Hidetoshi Seto (seto.hidetoshi@jp.fujitsu.com) + */ +#include <linux/config.h> +#include <linux/threads.h> + +#include <asm/asmmacro.h> +#include <asm/processor.h> + +GLOBAL_ENTRY(mca_handler_bhhook) + invala // clear RSE ? + ;; // + cover // + ;; // + clrrrb // + ;; + alloc r16=ar.pfs,0,2,1,0 // make a new frame + ;; + mov r13=IA64_KR(CURRENT) // current task pointer + ;; + adds r12=IA64_TASK_THREAD_KSP_OFFSET,r13 + ;; + ld8 r12=[r12] // stack pointer + ;; + mov loc0=r16 + movl loc1=mca_handler_bh // recovery C function + ;; + mov out0=r8 // poisoned address + mov b6=loc1 + ;; + mov loc1=rp + ;; + br.call.sptk.many rp=b6 // not return ... + ;; + mov ar.pfs=loc0 + mov rp=loc1 + ;; + mov r8=r0 + br.ret.sptk.many rp + ;; +END(mca_handler_bhhook) |