Remove obsolete #include <linux/config.h>
[linux-2.6.git] / arch / ia64 / kernel / mca_drv_asm.S
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/threads.h>
9
10 #include <asm/asmmacro.h>
11 #include <asm/processor.h>
12 #include <asm/ptrace.h>
13
14 GLOBAL_ENTRY(mca_handler_bhhook)
15         invala                          // clear RSE ?
16         cover
17         ;;
18         clrrrb
19         ;;                                              
20         alloc   r16=ar.pfs,0,2,3,0      // make a new frame
21         mov     ar.rsc=0
22         mov     r13=IA64_KR(CURRENT)    // current task pointer
23         ;;
24         mov     r2=r13
25         ;;
26         addl    r22=IA64_RBS_OFFSET,r2
27         ;;
28         mov     ar.bspstore=r22
29         addl    sp=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r2
30         ;;
31         adds    r2=IA64_TASK_THREAD_ON_USTACK_OFFSET,r13
32         ;;
33         st1     [r2]=r0         // clear current->thread.on_ustack flag
34         mov     loc0=r16
35         movl    loc1=mca_handler_bh     // recovery C function
36         ;;
37         mov     out0=r8                 // poisoned address
38         mov     out1=r9                 // iip
39         mov     out2=r10                // psr
40         mov     b6=loc1
41         ;;
42         mov     loc1=rp
43         ssm     psr.i | psr.ic
44         br.call.sptk.many rp=b6         // does not return ...
45         ;;
46         mov     ar.pfs=loc0
47         mov     rp=loc1
48         ;;
49         mov     r8=r0
50         br.ret.sptk.many rp
51 END(mca_handler_bhhook)