Mercurial > hg > truffle
diff src/cpu/zero/vm/nativeInst_zero.cpp @ 1010:354d3184f6b2
6890308: integrate zero assembler hotspot changes
Reviewed-by: never
Contributed-by: gbenson@redhat.com
author | never |
---|---|
date | Tue, 13 Oct 2009 12:04:21 -0700 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/zero/vm/nativeInst_zero.cpp Tue Oct 13 12:04:21 2009 -0700 @@ -0,0 +1,50 @@ +/* + * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. + * Copyright 2008 Red Hat, Inc. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +#include "incls/_precompiled.incl" +#include "incls/_nativeInst_zero.cpp.incl" + +// This method is called by nmethod::make_not_entrant_or_zombie to +// insert a jump to SharedRuntime::get_handle_wrong_method_stub() +// (dest) at the start of a compiled method (verified_entry) to avoid +// a race where a method is invoked while being made non-entrant. +// +// In Shark, verified_entry is a pointer to a SharkEntry. We can +// handle this simply by changing it's entry point to point at the +// interpreter. This only works because the interpreter and Shark +// calling conventions are the same. + +void NativeJump::patch_verified_entry(address entry, + address verified_entry, + address dest) { + assert(dest == SharedRuntime::get_handle_wrong_method_stub(), "should be"); + +#ifdef CC_INTERP + ((ZeroEntry*) verified_entry)->set_entry_point( + (address) CppInterpreter::normal_entry); +#else + Unimplemented(); +#endif // CC_INTERP +}