| /* |
| * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. |
| * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef OS_CPU_SOLARIS_SPARC_VM_THREAD_SOLARIS_SPARC_HPP |
| #define OS_CPU_SOLARIS_SPARC_VM_THREAD_SOLARIS_SPARC_HPP |
| private: |
| |
| void pd_initialize() { |
| _anchor.clear(); |
| _base_of_stack_pointer = NULL; |
| } |
| |
| frame pd_last_frame() { |
| assert(has_last_Java_frame(), "must have last_Java_sp() when suspended"); |
| assert(_anchor.walkable(), "thread has not dumped its register windows yet"); |
| |
| assert(_anchor.last_Java_pc() != NULL, "Ack no pc!"); |
| return frame(last_Java_sp(), frame::unpatchable, _anchor.last_Java_pc()); |
| } |
| |
| // Sometimes the trap handler needs to record both PC and NPC. |
| // This is a SPARC-specific companion to Thread::set_saved_exception_pc. |
| address _saved_exception_npc; |
| |
| // In polling_page_safepoint_handler_blob(s) we have to tail call other |
| // blobs without blowing any registers. A tail call requires some |
| // register to jump with and we can't blow any registers, so it must |
| // be restored in the delay slot. 'restore' cannot be used as it |
| // will chop the heads off of 64-bit %o registers in the 32-bit |
| // build. Instead we reload the registers using G2_thread and this |
| // location. Must be 64bits in the 32-bit LION build. |
| jdouble _o_reg_temps[6]; |
| |
| // a stack pointer older than any java frame stack pointer. It is |
| // used to validate stack pointers in frame::next_younger_sp (it |
| // provides the upper bound in the range check). This is necessary |
| // on Solaris/SPARC since the ucontext passed to a signal handler is |
| // sometimes corrupt and we need a way to check the extracted sp. |
| intptr_t* _base_of_stack_pointer; |
| |
| public: |
| |
| static int o_reg_temps_offset_in_bytes() { return offset_of(JavaThread, _o_reg_temps); } |
| |
| #ifndef _LP64 |
| address o_reg_temps(int i) { return (address)&_o_reg_temps[i]; } |
| #endif |
| |
| static int saved_exception_npc_offset_in_bytes() { return offset_of(JavaThread,_saved_exception_npc); } |
| |
| address saved_exception_npc() { return _saved_exception_npc; } |
| void set_saved_exception_npc(address a) { _saved_exception_npc = a; } |
| |
| |
| public: |
| |
| intptr_t* base_of_stack_pointer() { return _base_of_stack_pointer; } |
| |
| void set_base_of_stack_pointer(intptr_t* base_sp) { |
| _base_of_stack_pointer = base_sp; |
| } |
| |
| void record_base_of_stack_pointer() { |
| intptr_t *sp = (intptr_t *)(((intptr_t)StubRoutines::Sparc::flush_callers_register_windows_func()())); |
| intptr_t *ysp; |
| while((ysp = (intptr_t*)sp[FP->sp_offset_in_saved_window()]) != NULL) { |
| sp = (intptr_t *)((intptr_t)ysp + STACK_BIAS); |
| } |
| _base_of_stack_pointer = sp; |
| } |
| |
| bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, |
| bool isInJava); |
| |
| bool pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava); |
| private: |
| bool pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava, bool makeWalkable); |
| public: |
| |
| // These routines are only used on cpu architectures that |
| // have separate register stacks (Itanium). |
| static bool register_stack_overflow() { return false; } |
| static void enable_register_stack_guard() {} |
| static void disable_register_stack_guard() {} |
| |
| #endif // OS_CPU_SOLARIS_SPARC_VM_THREAD_SOLARIS_SPARC_HPP |