From: niklas <niklas@openbsd.org>
Date: Fri, 1 Dec 1995 17:47:16 +0000 (+0000)
Subject: niklas pointed out the new MDP_UNCACHE_WX might break fork/exec.
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=19cacf58afae8d6887288c095a23e16ffe22aef9;p=openbsd

niklas pointed out the new MDP_UNCACHE_WX might break fork/exec.
always set/clear in setregs() now
---

diff --git a/sys/arch/amiga/amiga/machdep.c b/sys/arch/amiga/amiga/machdep.c
index 739d05ae23a..f736d1ec425 100644
--- a/sys/arch/amiga/amiga/machdep.c
+++ b/sys/arch/amiga/amiga/machdep.c
@@ -416,6 +416,17 @@ setregs(p, pack, stack, retval)
 	p->p_addr->u_pcb.pcb_fpregs.fpf_null = 0;
 	m68881_restore(&p->p_addr->u_pcb.pcb_fpregs);
 #endif
+#ifdef COMPAT_SUNOS
+	/*
+	 * SunOS' ld.so does self-modifying code without knowing
+	 * about the 040's cache purging needs.  So we need to uncache
+	 * writeable executable pages.
+	 */
+	if (p->p_emul == &emul_sunos)
+		p->p_md.md_flags |= MDP_UNCACHE_WX;
+	else
+		p->p_md.md_flags &= ~MDP_UNCACHE_WX;
+#endif
 }
 
 /*