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Add machine-dependent bits of RAS for arm32.

This commit is contained in:
thorpej 2002-08-31 03:07:32 +00:00
parent cda9af7bb6
commit 212cb9f78d
3 changed files with 29 additions and 3 deletions
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24
sys/arch/arm/arm32/cpuswitch.S
View File

@ -1,4 +1,4 @@
/* $NetBSD: cpuswitch.S,v 1.17 2002/08/17 16:36:33 thorpej Exp $ */
/* $NetBSD: cpuswitch.S,v 1.18 2002/08/31 03:07:32 thorpej Exp $ */
/*
* Copyright (c) 1994-1998 Mark Brinicombe.
@ -584,6 +584,8 @@ ENTRY(cpu_switch)
add r7, r1, #PCB_R8
ldmia r7, {r8-r13}
mov r7, r1 /* preserve PCB pointer */
#ifdef ARMFPE
add r0, r1, #(USER_SIZE) & 0x00ff
add r0, r0, #(USER_SIZE) & 0xff00
@ -593,6 +595,18 @@ ENTRY(cpu_switch)
/* We can enable interrupts again */
IRQenable
/* rem: r6 = new proc */
/* rem: r7 = new PCB */
/*
* Check for restartable atomic sequences (RAS).
*/
ldr r2, [r6, #(P_NRAS)]
ldr r4, [r7, #(PCB_TF)] /* r4 = trapframe (used below) */
teq r2, #0 /* p->p_nras == 0? */
bne .Lswitch_do_ras /* no, check for one */
.Lswitch_return:
/* Get the spl level from the stack and update the current spl level */
@ -608,6 +622,14 @@ ENTRY(cpu_switch)
*/
ldmfd sp!, {r4-r7, pc}
.Lswitch_do_ras:
ldr r1, [r4, #(TF_PC)] /* second ras_lookup() arg */
mov r0, r6 /* first ras_lookup() arg */
bl _C_LABEL(ras_lookup)
cmn r0, #1 /* -1 means "not in a RAS" */
strne r0, [r4, #(TF_PC)]
b .Lswitch_return
.Lswitch_exited:
/*
* We skip the cache purge because switch_exit() already did

4
sys/arch/arm/arm32/genassym.cf
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@ -1,4 +1,4 @@
# $NetBSD: genassym.cf,v 1.14 2002/06/23 00:16:59 thorpej Exp $
# $NetBSD: genassym.cf,v 1.15 2002/08/31 03:07:32 thorpej Exp $
# Copyright (c) 1982, 1990 The Regents of the University of California.
# All rights reserved.
@ -72,12 +72,14 @@ define P_STAT offsetof(struct proc, p_stat)
define P_WCHAN offsetof(struct proc, p_wchan)
define P_VMSPACE offsetof(struct proc, p_vmspace)
define P_FLAG offsetof(struct proc, p_flag)
define P_NRAS offsetof(struct proc, p_nras)
define P_SIGLIST offsetof(struct proc, p_sigctx) + offsetof(struct sigctx, ps_siglist)
define P_SIGMASK offsetof(struct proc, p_sigctx) + offsetof(struct sigctx, ps_sigmask)
define P_USRPRI offsetof(struct proc, p_usrpri)
define SONPROC SONPROC
define PCB_TF offsetof(struct pcb, pcb_tf)
define PCB_PAGEDIR offsetof(struct pcb, pcb_pagedir)
define PCB_FLAGS offsetof(struct pcb, pcb_flags)
define PCB_R8 offsetof(struct pcb, pcb_un.un_32.pcb32_r8)

4
sys/arch/arm/include/arm32/types.h
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@ -1,4 +1,4 @@
/* $NetBSD: types.h,v 1.1 2001/11/22 17:59:58 thorpej Exp $ */
/* $NetBSD: types.h,v 1.2 2002/08/31 03:07:32 thorpej Exp $ */
/*
* Copyright (c) 2001 Wasabi Systems, Inc.
@ -44,4 +44,6 @@
#include <arm/types.h> /* pull in generic ARM definitions */
#define __HAVE_RAS
#endif /* _ARM_ARM32_TYPES_H_ */