projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * File: mca_drv_asm.S | |
| 3 | * Purpose: Assembly portion of Generic MCA handling | |
| 4 | * | |
| 5 | * Copyright (C) 2004 FUJITSU LIMITED | |
| fe77efb8 | 6 | * Copyright (C) 2004 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> |
| 1da177e4 | 7 | */ |
| 1da177e4 LT |
8 | #include <linux/threads.h> |
| 9 | ||
| 10 | #include <asm/asmmacro.h> | |
| 11 | #include <asm/processor.h> | |
| b1b901c2 | 12 | #include <asm/ptrace.h> |
| 1da177e4 LT |
13 | |
| 14 | GLOBAL_ENTRY(mca_handler_bhhook) | |
| 20305e59 | 15 | invala // clear RSE ? |
| 20305e59 HS |
16 | cover |
| 17 | ;; | |
| 18 | clrrrb | |
| 1da177e4 | 19 | ;; |
| d2a28ad9 | 20 | alloc r16=ar.pfs,0,2,3,0 // make a new frame |
| 20305e59 | 21 | mov ar.rsc=0 |
| 20305e59 | 22 | mov r13=IA64_KR(CURRENT) // current task pointer |
| 1da177e4 | 23 | ;; |
| 20305e59 | 24 | mov r2=r13 |
| b1b901c2 | 25 | ;; |
| 20305e59 | 26 | addl r22=IA64_RBS_OFFSET,r2 |
| b1b901c2 | 27 | ;; |
| 20305e59 | 28 | mov ar.bspstore=r22 |
| 20305e59 | 29 | addl sp=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r2 |
| 1da177e4 | 30 | ;; |
| 20305e59 | 31 | adds r2=IA64_TASK_THREAD_ON_USTACK_OFFSET,r13 |
| b1b901c2 | 32 | ;; |
| 20305e59 HS |
33 | st1 [r2]=r0 // clear current->thread.on_ustack flag |
| 34 | mov loc0=r16 | |
| 35 | movl loc1=mca_handler_bh // recovery C function | |
| 1da177e4 | 36 | ;; |
| 20305e59 | 37 | mov out0=r8 // poisoned address |
| d2a28ad9 RA |
38 | mov out1=r9 // iip |
| 39 | mov out2=r10 // psr | |
| 20305e59 | 40 | mov b6=loc1 |
| 1da177e4 | 41 | ;; |
| 20305e59 | 42 | mov loc1=rp |
| 83ce6ef8 TL |
43 | ssm psr.ic |
| 44 | ;; | |
| 45 | srlz.i | |
| 46 | ;; | |
| 47 | ssm psr.i | |
| 20305e59 | 48 | br.call.sptk.many rp=b6 // does not return ... |
| 1da177e4 | 49 | ;; |
| 20305e59 HS |
50 | mov ar.pfs=loc0 |
| 51 | mov rp=loc1 | |
| 1da177e4 | 52 | ;; |
| 20305e59 | 53 | mov r8=r0 |
| 1da177e4 | 54 | br.ret.sptk.many rp |
| 1da177e4 | 55 | END(mca_handler_bhhook) |