- recent w^x changes combined with random malloc/mmap exposed a previously

undiscovered bug in the SignatureHandlerLibrary. Code generated at runtime
was put into malloc()'ed memory and later attempted to execute it without
first making it executable with mprotect(). Debugging suggestions and help
from tom@, weingart@, marc@, millert@. Thx!
- make sure linux emulation is on for the build phase. needed if you reboot
after extracting.

okay tom@

devel/jdk/1.4/Makefile

@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.9 2006/01/02 03:48:40 kurt Exp $
+# $OpenBSD: Makefile,v 1.10 2006/01/18 15:08:16 kurt Exp $
 # $FreeBSD: /repoman/r/pcvs/ports/java/jdk14/Makefile,v 1.79 2004/08/18 07:06:03 glewis Exp $
 
 ONLY_FOR_ARCHS= 	i386
@@ -7,8 +7,8 @@ COMMENT=		"Java2(TM) Standard Edition Dev Kit v${V}"
 COMMENT-jre=		"Java2(TM) Standard Edition Runtime Environment v${V}"
 V=			1.4.2
 DISTNAME=		j2sdk-1_4_2
-PKGNAME=		jdk-${V}p4
-PKGNAME-jre=		jre-${V}p4
+PKGNAME=		jdk-${V}p5
+PKGNAME-jre=		jre-${V}p5
 
 CATEGORIES=		devel/jdk java
 
@@ -164,6 +164,9 @@ post-patch:
 .endfor
 .endif
 
+pre-build:
+	@${SYSCTL}=1
+
 post-build:
 	@rm -rf ${JDKIMAGEDIR}/demo/jfc/SwingSet2/resources \
 		${JDKIMAGEDIR}/demo/plugin/jfc/SwingSet2/resources \

devel/jdk/1.4/patches/patch-hotspot_src_cpu_i486_vm_interpreterRT_i486_cpp

@@ -0,0 +1,20 @@
+$OpenBSD: patch-hotspot_src_cpu_i486_vm_interpreterRT_i486_cpp,v 1.1 2006/01/18 15:08:16 kurt Exp $
+--- hotspot/src/cpu/i486/vm/interpreterRT_i486.cpp.orig	Wed Sep 10 21:40:12 2003
++++ hotspot/src/cpu/i486/vm/interpreterRT_i486.cpp	Wed Jan 18 09:26:07 2006
+@@ -8,6 +8,8 @@
+ 
+ #include "incls/_precompiled.incl"
+ #include "incls/_interpreterRT_i486.cpp.incl"
++#include <sys/types.h>
++#include <sys/mman.h>
+ 
+ 
+ #define __ _masm->
+@@ -83,6 +85,7 @@ class SignatureHandlerLibrary: public Al
+           InterpreterRuntime::SignatureHandlerGenerator(method, buffer).generate(fingerprint);
+           // copy into C-heap allocated memory location
+           address handler = (address)NEW_C_HEAP_ARRAY(u_char, buffer->code_size());
++          mprotect(handler, buffer->code_size(), PROT_READ|PROT_WRITE|PROT_EXEC);
+           memcpy(handler, buffer->code_begin(), buffer->code_size());
+           // debugging suppport
+           if (PrintSignatureHandlers) {