6918006: G1: spill space must be reserved on the stack for barrier calls on Windows x64
Summary: Stub code generated to call G1 barriers does not allocate spill space on the stack as required by Windows x64 ABI. The fix is to use more ABI-friendly call_VM_leaf().
Reviewed-by: iveresov, never, kvn
OPENJDK ASSEMBLY EXCEPTIONThe OpenJDK source code made available by Sun at openjdk.java.net andopenjdk.dev.java.net ("OpenJDK Code") is distributed under the terms of theGNU General Public License <http://www.gnu.org/copyleft/gpl.html> version 2only ("GPL2"), with the following clarification and special exception. Linking this OpenJDK Code statically or dynamically with other code is making a combined work based on this library. Thus, the terms and conditions of GPL2 cover the whole combination. As a special exception, Sun gives you permission to link this OpenJDK Code with certain code licensed by Sun as indicated at http://openjdk.java.net/legal/exception-modules-2007-05-08.html ("Designated Exception Modules") to produce an executable, regardless of the license terms of the Designated Exception Modules, and to copy and distribute the resulting executable under GPL2, provided that the Designated Exception Modules continue to be governed by the licenses under which they were offered by Sun.As such, it allows licensees and sublicensees of Sun's GPL2 OpenJDK Code tobuild an executable that includes those portions of necessary code that Suncould not provide under GPL2 (or that Sun has provided under GPL2 with theClasspath exception). If you modify or add to the OpenJDK code, that newGPL2 code may still be combined with Designated Exception Modules if thenew code is made subject to this exception by its copyright holder.