15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef OS_CPU_LINUX_SPARC_VM_THREAD_LINUX_SPARC_HPP
26 #define OS_CPU_LINUX_SPARC_VM_THREAD_LINUX_SPARC_HPP
27
28 private:
29
30 void pd_initialize() {
31 _anchor.clear();
32 _base_of_stack_pointer = NULL;
33 }
34
35 frame pd_last_frame() {
36 assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
37 assert(_anchor.walkable(), "thread has not dumped its register windows yet");
38
39 assert(_anchor.last_Java_pc() != NULL, "Ack no pc!");
40 return frame(last_Java_sp(), frame::unpatchable, _anchor.last_Java_pc());
41 }
42
43 // Sometimes the trap handler needs to record both PC and NPC.
44 // This is a SPARC-specific companion to Thread::set_saved_exception_pc.
45 address _saved_exception_npc;
46
47 // In polling_page_safepoint_handler_blob(s) we have to tail call other
48 // blobs without blowing any registers. A tail call requires some
49 // register to jump with and we can't blow any registers, so it must
50 // be restored in the delay slot. 'restore' cannot be used as it
51 // will chop the heads off of 64-bit %o registers in the 32-bit
52 // build. Instead we reload the registers using G2_thread and this
53 // location. Must be 64bits in the 32-bit LION build.
54 jdouble _o_reg_temps[6];
55
56 // a stack pointer older than any java frame stack pointer. It is
57 // used to validate stack pointers in frame::next_younger_sp (it
58 // provides the upper bound in the range check). This is necessary
59 // on Solaris/SPARC since the ucontext passed to a signal handler is
60 // sometimes corrupt and we need a way to check the extracted sp.
61 intptr_t* _base_of_stack_pointer;
|
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef OS_CPU_LINUX_SPARC_VM_THREAD_LINUX_SPARC_HPP
26 #define OS_CPU_LINUX_SPARC_VM_THREAD_LINUX_SPARC_HPP
27
28 private:
29
30 void pd_initialize() {
31 _anchor.clear();
32 _base_of_stack_pointer = NULL;
33 }
34
35 frame pd_last_frame();
36
37 // Sometimes the trap handler needs to record both PC and NPC.
38 // This is a SPARC-specific companion to Thread::set_saved_exception_pc.
39 address _saved_exception_npc;
40
41 // In polling_page_safepoint_handler_blob(s) we have to tail call other
42 // blobs without blowing any registers. A tail call requires some
43 // register to jump with and we can't blow any registers, so it must
44 // be restored in the delay slot. 'restore' cannot be used as it
45 // will chop the heads off of 64-bit %o registers in the 32-bit
46 // build. Instead we reload the registers using G2_thread and this
47 // location. Must be 64bits in the 32-bit LION build.
48 jdouble _o_reg_temps[6];
49
50 // a stack pointer older than any java frame stack pointer. It is
51 // used to validate stack pointers in frame::next_younger_sp (it
52 // provides the upper bound in the range check). This is necessary
53 // on Solaris/SPARC since the ucontext passed to a signal handler is
54 // sometimes corrupt and we need a way to check the extracted sp.
55 intptr_t* _base_of_stack_pointer;
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