| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * File: mca_drv_asm.S |
| 3 | * Purpose: Assembly portion of Generic MCA handling |
| 4 | * |
| 5 | * Copyright (C) 2004 FUJITSU LIMITED |
| 6 | * Copyright (C) Hidetoshi Seto (seto.hidetoshi@jp.fujitsu.com) |
| 7 | */ |
| 8 | #include <linux/config.h> |
| 9 | #include <linux/threads.h> |
| 10 | |
| 11 | #include <asm/asmmacro.h> |
| 12 | #include <asm/processor.h> |
| 13 | |
| 14 | GLOBAL_ENTRY(mca_handler_bhhook) |
| 15 | invala // clear RSE ? |
| 16 | ;; // |
| 17 | cover // |
| 18 | ;; // |
| 19 | clrrrb // |
| 20 | ;; |
| 21 | alloc r16=ar.pfs,0,2,1,0 // make a new frame |
| 22 | ;; |
| 23 | mov r13=IA64_KR(CURRENT) // current task pointer |
| 24 | ;; |
| 25 | adds r12=IA64_TASK_THREAD_KSP_OFFSET,r13 |
| 26 | ;; |
| 27 | ld8 r12=[r12] // stack pointer |
| 28 | ;; |
| 29 | mov loc0=r16 |
| 30 | movl loc1=mca_handler_bh // recovery C function |
| 31 | ;; |
| 32 | mov out0=r8 // poisoned address |
| 33 | mov b6=loc1 |
| 34 | ;; |
| 35 | mov loc1=rp |
| 36 | ;; |
| 37 | br.call.sptk.many rp=b6 // not return ... |
| 38 | ;; |
| 39 | mov ar.pfs=loc0 |
| 40 | mov rp=loc1 |
| 41 | ;; |
| 42 | mov r8=r0 |
| 43 | br.ret.sptk.many rp |
| 44 | ;; |
| 45 | END(mca_handler_bhhook) |
