From b92c0168f8f97067797ab4c4fc3d202ba0891393 Mon Sep 17 00:00:00 2001
From: Joel Sing <jsing@cvs.openbsd.org>
Date: Tue, 5 Apr 2011 15:46:54 +0000
Subject: Move PSW in struct cpu_info. Also ensure that we leave interrupts
 disabled when switching to virtual mode in the trap handler. Re-enabling
 interrupts whilst in the trap handler for an interrupt makes life
 interesting.

ok kettenis@
---
 sys/arch/hppa64/hppa64/genassym.cf |  3 ++-
 sys/arch/hppa64/hppa64/locore.S    | 20 +++++++++++++-------
 sys/arch/hppa64/hppa64/machdep.c   |  4 +---
 sys/arch/hppa64/include/cpu.h      |  4 +++-
 4 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/sys/arch/hppa64/hppa64/genassym.cf b/sys/arch/hppa64/hppa64/genassym.cf
index b145c09376f..31bb023d329 100644
--- a/sys/arch/hppa64/hppa64/genassym.cf
+++ b/sys/arch/hppa64/hppa64/genassym.cf
@@ -1,4 +1,4 @@
-#	$OpenBSD: genassym.cf,v 1.4 2008/04/20 17:11:24 kettenis Exp $
+#	$OpenBSD: genassym.cf,v 1.5 2011/04/05 15:46:53 jsing Exp $
 
 #
 # Copyright (c) 1982, 1990, 1993
@@ -128,6 +128,7 @@ member	pcb_ksp
 member	pcb_space
 
 struct	cpu_info
+member	ci_psw
 member	ci_curproc
 
 struct	uvm
diff --git a/sys/arch/hppa64/hppa64/locore.S b/sys/arch/hppa64/hppa64/locore.S
index 5314ffadc91..d1735bdeaf0 100644
--- a/sys/arch/hppa64/hppa64/locore.S
+++ b/sys/arch/hppa64/hppa64/locore.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: locore.S,v 1.14 2011/04/05 15:30:45 jsing Exp $	*/
+/*	$OpenBSD: locore.S,v 1.15 2011/04/05 15:46:53 jsing Exp $	*/
 
 /*
  * Copyright (c) 2005 Michael Shalayeff
@@ -45,8 +45,6 @@
 	.data
 
 	.align	16
-$kpsl
-	.word	PSL_W | PSL_Q | PSL_P | PSL_C | PSL_D | PSL_S | PSL_O
 	.export cpl, data
 cpl
 	.word	IPL_HIGH
@@ -94,6 +92,13 @@ $start
 	mtctl	%r1, %eirr
 	mtctl	%r0, %cr10	/* ccr */
 
+	ldil	L%cpu0_info, %r1
+	ldo	R%cpu0_info(%r1), %r1
+	mtctl	%r1, %cr24
+	ldil	L%(PSL_W|PSL_Q|PSL_P|PSL_C|PSL_D|PSL_S|PSL_O), %r8
+	ldo	R%(PSL_W|PSL_Q|PSL_P|PSL_C|PSL_D|PSL_S|PSL_O)(%r8), %r8
+	stw	%r8, CI_PSW(%r1)
+
 	ldil	L%pdc, %r1
 	std	%arg0, R%pdc(%r1)
 	ldil	L%boothowto, %r1
@@ -212,8 +217,8 @@ $start_zero_tf
 	std	%r1, TF_FLAGS(%arg2)
 	std	%arg3, TF_CR30(%arg2)
 
-	ldil	L%$kpsl, %r1
-	ldw	R%$kpsl(%r1), arg7
+	mfctl	%cr24, %r1
+	ldw	CI_PSW(%r1), arg7
 	ldil	L%$start_virt, %r31
 	ldo	R%$start_virt(%r31), %r31
 	ldil	L%$ivaaddr, %r1
@@ -651,8 +656,9 @@ ENTRY(TLABEL(all),0)
 	mtctl	%r9, %pcoq
 	mtctl	%r25, %cr29
 
-	ldil	L%$kpsl, %r9
-	ldw	R%$kpsl(%r9), %r9
+	mfctl	%cr24, %r9
+	ldw	CI_PSW(%r9), %r9
+	depi	0, PSL_I_POS, 1, %r9	/* Leave interrupts disabled. */
 	mtctl	%r9, %ipsw
 
 	mfctl	%cr30, %r9
diff --git a/sys/arch/hppa64/hppa64/machdep.c b/sys/arch/hppa64/hppa64/machdep.c
index f164a44986e..c3bb292d979 100644
--- a/sys/arch/hppa64/hppa64/machdep.c
+++ b/sys/arch/hppa64/hppa64/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.31 2011/04/05 14:13:25 jsing Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.32 2011/04/05 15:46:53 jsing Exp $	*/
 
 /*
  * Copyright (c) 2005 Michael Shalayeff
@@ -182,8 +182,6 @@ hppa_init(paddr_t start)
 	int error;
 	paddr_t	avail_end;
 
-	mtctl((long)&cpu0_info, 24);
-
 	pdc_init();	/* init PDC iface, so we can call em easy */
 
 	delay_init();	/* calculate cpu clock ratio */
diff --git a/sys/arch/hppa64/include/cpu.h b/sys/arch/hppa64/include/cpu.h
index 88b5d46be49..4a328282ce5 100644
--- a/sys/arch/hppa64/include/cpu.h
+++ b/sys/arch/hppa64/include/cpu.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cpu.h,v 1.19 2010/12/21 14:56:23 claudio Exp $	*/
+/*	$OpenBSD: cpu.h,v 1.20 2011/04/05 15:46:53 jsing Exp $	*/
 
 /*
  * Copyright (c) 2005 Michael Shalayeff
@@ -116,6 +116,8 @@
 #include <sys/sched.h>
 
 struct cpu_info {
+	volatile int	ci_psw;
+
 	struct proc	*ci_curproc;
 	struct pcb	*ci_cpcb;
 	struct cpu_info	*ci_next;
-- 
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