Turn off the alignment check flag when entering a signal handler

diff --git a/sys/arch/i386/i386/freebsd_machdep.c b/sys/arch/i386/i386/freebsd_machdep.c
index 8ef4979..5659901 100644 (file)
--- a/sys/arch/i386/i386/freebsd_machdep.c
+++ b/sys/arch/i386/i386/freebsd_machdep.c
@@ -1,5 +1,5 @@
-/*     $OpenBSD: freebsd_machdep.c,v 1.4 1996/04/21 22:16:26 deraadt Exp $     */
-/*     $NetBSD: freebsd_machdep.c,v 1.8 1996/04/12 08:44:35 mycroft Exp $      */
+/*     $OpenBSD: freebsd_machdep.c,v 1.5 1996/05/02 13:41:14 deraadt Exp $     */
+/*     $NetBSD: freebsd_machdep.c,v 1.9 1996/04/18 08:36:20 mycroft Exp $      */
 
 /*-
  * Copyright (c) 1993, 1994, 1995, 1996 Charles M. Hannum.  All rights reserved.
@@ -160,7 +160,7 @@ freebsd_sendsig(catcher, sig, mask, code)
        tf->tf_eip = (int)(((char *)PS_STRINGS) - 
             (freebsd_esigcode - freebsd_sigcode));
        tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
-       tf->tf_eflags &= ~(PSL_T|PSL_VM);
+       tf->tf_eflags &= ~(PSL_T|PSL_VM|PSL_AC);
        tf->tf_esp = (int)fp;
        tf->tf_ss = GSEL(GUDATA_SEL, SEL_UPL);
 }

diff --git a/sys/arch/i386/i386/linux_machdep.c b/sys/arch/i386/i386/linux_machdep.c
index 67d22c8..af6bd27 100644 (file)
--- a/sys/arch/i386/i386/linux_machdep.c
+++ b/sys/arch/i386/i386/linux_machdep.c
@@ -1,5 +1,5 @@
-/*     $OpenBSD: linux_machdep.c,v 1.6 1996/04/21 22:16:28 deraadt Exp $       */
-/*     $NetBSD: linux_machdep.c,v 1.27 1996/04/12 08:44:37 mycroft Exp $       */
+/*     $OpenBSD: linux_machdep.c,v 1.7 1996/05/02 13:41:16 deraadt Exp $       */
+/*     $NetBSD: linux_machdep.c,v 1.28 1996/04/18 08:36:22 mycroft Exp $       */
 
 /*
  * Copyright (c) 1995 Frank van der Linden
@@ -176,7 +176,7 @@ linux_sendsig(catcher, sig, mask, code)
        tf->tf_eip = (int)(((char *)PS_STRINGS) -
             (linux_esigcode - linux_sigcode));
        tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
-       tf->tf_eflags &= ~(PSL_T|PSL_VM);
+       tf->tf_eflags &= ~(PSL_T|PSL_VM|PSL_AC);
        tf->tf_esp = (int)fp;
        tf->tf_ss = GSEL(GUDATA_SEL, SEL_UPL);
 }

diff --git a/sys/arch/i386/i386/machdep.c b/sys/arch/i386/i386/machdep.c
index 27438f0..bf9bc18 100644 (file)
--- a/sys/arch/i386/i386/machdep.c
+++ b/sys/arch/i386/i386/machdep.c
@@ -1,5 +1,5 @@
-/*     $OpenBSD: machdep.c,v 1.14 1996/04/29 14:13:15 hvozda Exp $     */
-/*     $NetBSD: machdep.c,v 1.197 1996/04/12 08:44:40 mycroft Exp $    */
+/*     $OpenBSD: machdep.c,v 1.15 1996/05/02 13:41:18 deraadt Exp $    */
+/*     $NetBSD: machdep.c,v 1.199 1996/04/18 09:58:13 mycroft Exp $    */
 
 /*-
  * Copyright (c) 1993, 1994, 1995, 1996 Charles M. Hannum.  All rights reserved.
@@ -459,11 +459,10 @@ identifycpu()
 
 #if defined(I486_CPU) || defined(I586_CPU)
        /*
-        * On a 486 or above, enable ring 0 write protection and outer ring
-        * alignment checking.
+        * On a 486 or above, enable ring 0 write protection.
         */
        if (cpu_class >= CPUCLASS_486)
-               lcr0(rcr0() | CR0_WP | CR0_AM);
+               lcr0(rcr0() | CR0_WP);
 #endif
 }
 
@@ -613,7 +612,7 @@ sendsig(catcher, sig, mask, code)
        tf->tf_ds = GSEL(GUDATA_SEL, SEL_UPL);
        tf->tf_eip = (int)(((char *)PS_STRINGS) - (esigcode - sigcode));
        tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
-       tf->tf_eflags &= ~(PSL_T|PSL_VM);
+       tf->tf_eflags &= ~(PSL_T|PSL_VM|PSL_AC);
        tf->tf_esp = (int)fp;
        tf->tf_ss = GSEL(GUDATA_SEL, SEL_UPL);
 }

diff --git a/sys/arch/i386/i386/svr4_machdep.c b/sys/arch/i386/i386/svr4_machdep.c
index 479bf8d..86611d5 100644 (file)
--- a/sys/arch/i386/i386/svr4_machdep.c
+++ b/sys/arch/i386/i386/svr4_machdep.c
@@ -1,5 +1,5 @@
-/*     $OpenBSD: svr4_machdep.c,v 1.4 1996/04/21 22:16:38 deraadt Exp $        */
-/*     $NetBSD: svr4_machdep.c,v 1.22 1996/04/12 08:44:42 mycroft Exp $ */
+/*     $OpenBSD: svr4_machdep.c,v 1.5 1996/05/02 13:41:20 deraadt Exp $        */
+/*     $NetBSD: svr4_machdep.c,v 1.23 1996/04/18 08:36:31 mycroft Exp $         */
 
 /*
  * Copyright (c) 1994 Christos Zoulas
@@ -380,7 +380,7 @@ svr4_sendsig(catcher, sig, mask, code)
        tf->tf_eip = (int)(((char *)PS_STRINGS) -
             (svr4_esigcode - svr4_sigcode));
        tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
-       tf->tf_eflags &= ~(PSL_T|PSL_VM);
+       tf->tf_eflags &= ~(PSL_T|PSL_VM|PSL_AC);
        tf->tf_esp = (int)fp;
        tf->tf_ss = GSEL(GUDATA_SEL, SEL_UPL);
 }