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comparison: src/os_cpu/solaris_sparc/vm/thread_solaris_sparc.hpp
src/os_cpu/solaris_sparc/vm/thread_solaris_sparc.hpp
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| 1 /* | |
| 2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 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_SOLARIS_SPARC_VM_THREAD_SOLARIS_SPARC_HPP | |
| 26 #define OS_CPU_SOLARIS_SPARC_VM_THREAD_SOLARIS_SPARC_HPP | |
| 27 private: | |
| 28 | |
| 29 void pd_initialize() { | |
| 30 _anchor.clear(); | |
| 31 _base_of_stack_pointer = NULL; | |
| 32 } | |
| 33 | |
| 34 frame pd_last_frame() { | |
| 35 assert(has_last_Java_frame(), "must have last_Java_sp() when suspended"); | |
| 36 assert(_anchor.walkable(), "thread has not dumped its register windows yet"); | |
| 37 | |
| 38 assert(_anchor.last_Java_pc() != NULL, "Ack no pc!"); | |
| 39 return frame(last_Java_sp(), frame::unpatchable, _anchor.last_Java_pc()); | |
| 40 } | |
| 41 | |
| 42 // Sometimes the trap handler needs to record both PC and NPC. | |
| 43 // This is a SPARC-specific companion to Thread::set_saved_exception_pc. | |
| 44 address _saved_exception_npc; | |
| 45 | |
| 46 // In polling_page_safepoint_handler_blob(s) we have to tail call other | |
| 47 // blobs without blowing any registers. A tail call requires some | |
| 48 // register to jump with and we can't blow any registers, so it must | |
| 49 // be restored in the delay slot. 'restore' cannot be used as it | |
| 50 // will chop the heads off of 64-bit %o registers in the 32-bit | |
| 51 // build. Instead we reload the registers using G2_thread and this | |
| 52 // location. Must be 64bits in the 32-bit LION build. | |
| 53 jdouble _o_reg_temps[6]; | |
| 54 | |
| 55 // a stack pointer older than any java frame stack pointer. It is | |
| 56 // used to validate stack pointers in frame::next_younger_sp (it | |
| 57 // provides the upper bound in the range check). This is necessary | |
| 58 // on Solaris/SPARC since the ucontext passed to a signal handler is | |
| 59 // sometimes corrupt and we need a way to check the extracted sp. | |
| 60 intptr_t* _base_of_stack_pointer; | |
| 61 | |
| 62 public: | |
| 63 | |
| 64 static int o_reg_temps_offset_in_bytes() { return offset_of(JavaThread, _o_reg_temps); } | |
| 65 | |
| 66 #ifndef _LP64 | |
| 67 address o_reg_temps(int i) { return (address)&_o_reg_temps[i]; } | |
| 68 #endif | |
| 69 | |
| 70 static int saved_exception_npc_offset_in_bytes() { return offset_of(JavaThread,_saved_exception_npc); } | |
| 71 | |
| 72 address saved_exception_npc() { return _saved_exception_npc; } | |
| 73 void set_saved_exception_npc(address a) { _saved_exception_npc = a; } | |
| 74 | |
| 75 | |
| 76 public: | |
| 77 | |
| 78 intptr_t* base_of_stack_pointer() { return _base_of_stack_pointer; } | |
| 79 | |
| 80 void set_base_of_stack_pointer(intptr_t* base_sp) { | |
| 81 _base_of_stack_pointer = base_sp; | |
| 82 } | |
| 83 | |
| 84 void record_base_of_stack_pointer() { | |
| 85 intptr_t *sp = (intptr_t *)(((intptr_t)StubRoutines::Sparc::flush_callers_register_windows_func()())); | |
| 86 intptr_t *ysp; | |
| 87 while((ysp = (intptr_t*)sp[FP->sp_offset_in_saved_window()]) != NULL) { | |
| 88 sp = (intptr_t *)((intptr_t)ysp + STACK_BIAS); | |
| 89 } | |
| 90 _base_of_stack_pointer = sp; | |
| 91 } | |
| 92 | |
| 93 bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, | |
| 94 bool isInJava); | |
| 95 | |
| 96 bool pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava); | |
| 97 private: | |
| 98 bool pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava, bool makeWalkable); | |
| 99 public: | |
| 100 | |
| 101 // These routines are only used on cpu architectures that | |
| 102 // have separate register stacks (Itanium). | |
| 103 static bool register_stack_overflow() { return false; } | |
| 104 static void enable_register_stack_guard() {} | |
| 105 static void disable_register_stack_guard() {} | |
| 106 | |
| 107 #endif // OS_CPU_SOLARIS_SPARC_VM_THREAD_SOLARIS_SPARC_HPP |
