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original_kernel/arch/ia64/kernel/mca_drv_asm.S

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* 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>
[IA64] MCA recovery improvements Jack Steiner uncovered some opportunities for improvement in the MCA recovery code. 1) Set bsp to save registers on the kernel stack. 2) Disable interrupts while in the MCA recovery code. 3) Change the way the user process is killed, to avoid a panic in schedule. Testing shows that these changes make the recovery code much more reliable with the 2.6.12 kernel. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-06 15:07:00 +08:00
#include <asm/ptrace.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
GLOBAL_ENTRY(mca_handler_bhhook)
invala // clear RSE ?
;; //
cover //
;; //
clrrrb //
;;
alloc r16=ar.pfs,0,2,1,0 // make a new frame
;;
[IA64] MCA recovery improvements Jack Steiner uncovered some opportunities for improvement in the MCA recovery code. 1) Set bsp to save registers on the kernel stack. 2) Disable interrupts while in the MCA recovery code. 3) Change the way the user process is killed, to avoid a panic in schedule. Testing shows that these changes make the recovery code much more reliable with the 2.6.12 kernel. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-06 15:07:00 +08:00
mov ar.rsc=0
;;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
mov r13=IA64_KR(CURRENT) // current task pointer
;;
[IA64] MCA recovery improvements Jack Steiner uncovered some opportunities for improvement in the MCA recovery code. 1) Set bsp to save registers on the kernel stack. 2) Disable interrupts while in the MCA recovery code. 3) Change the way the user process is killed, to avoid a panic in schedule. Testing shows that these changes make the recovery code much more reliable with the 2.6.12 kernel. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-06 15:07:00 +08:00
mov r2=r13
;;
addl r22=IA64_RBS_OFFSET,r2
;;
mov ar.bspstore=r22
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
;;
[IA64] MCA recovery improvements Jack Steiner uncovered some opportunities for improvement in the MCA recovery code. 1) Set bsp to save registers on the kernel stack. 2) Disable interrupts while in the MCA recovery code. 3) Change the way the user process is killed, to avoid a panic in schedule. Testing shows that these changes make the recovery code much more reliable with the 2.6.12 kernel. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-06 15:07:00 +08:00
addl sp=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r2
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
;;
[IA64] MCA recovery improvements Jack Steiner uncovered some opportunities for improvement in the MCA recovery code. 1) Set bsp to save registers on the kernel stack. 2) Disable interrupts while in the MCA recovery code. 3) Change the way the user process is killed, to avoid a panic in schedule. Testing shows that these changes make the recovery code much more reliable with the 2.6.12 kernel. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-06 15:07:00 +08:00
adds r2=IA64_TASK_THREAD_ON_USTACK_OFFSET,r13
;;
st1 [r2]=r0 // clear current->thread.on_ustack flag
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
mov loc0=r16
movl loc1=mca_handler_bh // recovery C function
;;
mov out0=r8 // poisoned address
mov b6=loc1
;;
mov loc1=rp
;;
[IA64] MCA recovery improvements Jack Steiner uncovered some opportunities for improvement in the MCA recovery code. 1) Set bsp to save registers on the kernel stack. 2) Disable interrupts while in the MCA recovery code. 3) Change the way the user process is killed, to avoid a panic in schedule. Testing shows that these changes make the recovery code much more reliable with the 2.6.12 kernel. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-06 15:07:00 +08:00
ssm psr.i
;;
br.call.sptk.many rp=b6 // does not return ...
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
;;
mov ar.pfs=loc0
mov rp=loc1
;;
mov r8=r0
br.ret.sptk.many rp
;;
END(mca_handler_bhhook)