/* *Copyright* *Copyright(c)2012,2014SAPSE.Allrightsreserved. *DONOTALTERORREMOVECOPYRIGHTNOTICESORTHISFILEHEADER. * *Thiscodeisfree#defineCPU_PPC_JAVAFRAMEANCHOR_PPC_HPP *underthetermsofGNUGeneralLicenseversion2only,as publishedby
*
* This is distributedin thehope * This code is distributed in the hope that
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2for 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; ifnot, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 *Copyright(c)20122014 SAP . All rights reserved.
* or visit www.oracle.com if you need additional information or have
* questions.
*
*/
public: // Each arch must define reset, save, restore // These are used by objects that only care about: // 1 - initializing a new state (thread creation, javaCalls) // 2 - saving a current state (javaCalls) // 3 - restoring an old state (javaCalls)
inlinevoid clear(void) { // clearing _last_Java_sp must be first
_last_Java_sp = NULL; // fence?
OrderAccess::release();
_last_Java_pc = NULL;
}
void copy(JavaFrameAnchor* src) { // In order to make sure the transition state is valid for "this". // We must clear _last_Java_sp before copying the rest of the new data. // // Hack Alert: Temporary bugfix for 4717480/4721647 // To act like previous version (pd_cache_state) don't NULL _last_Java_sp // unless the value is changing. if (_last_Java_sp != src->_last_Java_sp) {
_last_Java_sp = NULL;
OrderAccess::release();
}
_last_Java_pc = src->_last_Java_pc; // Must be last so profiler will always see valid frame if has_last_frame() is true.
OrderAccess::release();
_last_Java_sp = src->_last_Java_sp;
}
// Always walkable. bool walkable(void) { returntrue; } // Never any thing to do since we are always walkable and can find address of return addresses. void make_walkable() { }
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