1 /* 2 * Copyright (c) 2022, 2023, 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 CPU_AARCH64_CONTINUATIONHELPER_AARCH64_INLINE_HPP 26 #define CPU_AARCH64_CONTINUATIONHELPER_AARCH64_INLINE_HPP 27 28 #include "runtime/continuationHelper.hpp" 29 30 #include "runtime/continuationEntry.inline.hpp" 31 #include "runtime/frame.inline.hpp" 32 #include "runtime/registerMap.hpp" 33 #include "utilities/macros.hpp" 34 35 template<typename FKind> 36 static inline intptr_t** link_address(const frame& f) { 37 assert(FKind::is_instance(f), ""); 38 return FKind::interpreted 39 ? (intptr_t**)(f.fp() + frame::link_offset) 40 : (intptr_t**)(f.unextended_sp() + f.cb()->frame_size() - frame::sender_sp_offset); 41 } 42 43 inline int ContinuationHelper::frame_align_words(int size) { 44 #ifdef _LP64 45 return size & 1; 46 #else 47 return 0; 48 #endif 49 } 50 51 inline intptr_t* ContinuationHelper::frame_align_pointer(intptr_t* sp) { 52 #ifdef _LP64 53 sp = align_down(sp, frame::frame_alignment); 54 #endif 55 return sp; 56 } 57 58 template<typename FKind> 59 inline void ContinuationHelper::update_register_map(const frame& f, RegisterMap* map) { 60 frame::update_map_with_saved_link(map, link_address<FKind>(f)); 61 } 62 63 inline void ContinuationHelper::update_register_map_with_callee(const frame& f, RegisterMap* map) { 64 frame::update_map_with_saved_link(map, ContinuationHelper::Frame::callee_link_address(f)); 65 } 66 67 inline void ContinuationHelper::push_pd(const frame& f) { 68 *(intptr_t**)(f.sp() - frame::sender_sp_offset) = f.fp(); 69 } 70 71 #define CPU_OVERRIDES_RETURN_ADDRESS_ACCESSORS 72 73 inline address ContinuationHelper::return_address_at(intptr_t* sp) { 74 return pauth_strip_verifiable(*(address*)sp); 75 } 76 77 inline void ContinuationHelper::patch_return_address_at(intptr_t* sp, 78 address pc) { 79 *(address*)sp = pauth_sign_return_address(pc); 80 } 81 82 inline void ContinuationHelper::set_anchor_to_entry_pd(JavaFrameAnchor* anchor, ContinuationEntry* entry) { 83 anchor->set_last_Java_fp(entry->entry_fp()); 84 } 85 86 #ifdef ASSERT 87 inline void ContinuationHelper::set_anchor_pd(JavaFrameAnchor* anchor, intptr_t* sp) { 88 intptr_t* fp = *(intptr_t**)(sp - frame::sender_sp_offset); 89 anchor->set_last_Java_fp(fp); 90 } 91 92 inline bool ContinuationHelper::Frame::assert_frame_laid_out(frame f) { 93 intptr_t* sp = f.sp(); 94 address pc = ContinuationHelper::return_address_at( 95 sp - frame::sender_sp_ret_address_offset()); 96 intptr_t* fp = *(intptr_t**)(sp - frame::sender_sp_offset); 97 assert(f.raw_pc() == pc, "f.ra_pc: " INTPTR_FORMAT " actual: " INTPTR_FORMAT, p2i(f.raw_pc()), p2i(pc)); 98 assert(f.fp() == fp, "f.fp: " INTPTR_FORMAT " actual: " INTPTR_FORMAT, p2i(f.fp()), p2i(fp)); 99 return f.raw_pc() == pc && f.fp() == fp; 100 } 101 #endif 102 103 inline intptr_t** ContinuationHelper::Frame::callee_link_address(const frame& f) { 104 return (intptr_t**)(f.sp() - frame::sender_sp_offset); 105 } 106 107 inline address* ContinuationHelper::Frame::return_pc_address(const frame& f) { 108 return (address*)(f.real_fp() - 1); 109 } 110 111 inline address* ContinuationHelper::InterpretedFrame::return_pc_address(const frame& f) { 112 return (address*)(f.fp() + frame::return_addr_offset); 113 } 114 115 inline void ContinuationHelper::InterpretedFrame::patch_sender_sp(frame& f, const frame& caller) { 116 intptr_t* sp = caller.unextended_sp(); 117 assert(f.is_interpreted_frame(), ""); 118 intptr_t* la = f.addr_at(frame::interpreter_frame_sender_sp_offset); 119 *la = f.is_heap_frame() ? (intptr_t)(sp - f.fp()) : (intptr_t)sp; 120 } 121 122 inline address ContinuationHelper::Frame::real_pc(const frame& f) { 123 // Always used in assertions. Just strip it. 124 address* pc_addr = &(((address*) f.sp())[-1]); 125 return pauth_strip_pointer(*pc_addr); 126 } 127 128 inline void ContinuationHelper::Frame::patch_pc(const frame& f, address pc) { 129 address* pc_addr = &(((address*) f.sp())[-1]); 130 *pc_addr = pauth_sign_return_address(pc); 131 } 132 133 inline intptr_t* ContinuationHelper::InterpretedFrame::frame_top(const frame& f, InterpreterOopMap* mask) { // inclusive; this will be copied with the frame 134 // interpreter_frame_last_sp_offset, points to unextended_sp includes arguments in the frame 135 // interpreter_frame_initial_sp_offset excludes expression stack slots 136 int expression_stack_sz = expression_stack_size(f, mask); 137 intptr_t* res = (intptr_t*)f.at_relative(frame::interpreter_frame_initial_sp_offset) - expression_stack_sz; 138 assert(res == (intptr_t*)f.interpreter_frame_monitor_end() - expression_stack_sz, ""); 139 assert(res >= f.unextended_sp(), 140 "res: " INTPTR_FORMAT " initial_sp: " INTPTR_FORMAT " last_sp: " INTPTR_FORMAT " unextended_sp: " INTPTR_FORMAT " expression_stack_size: %d", 141 p2i(res), p2i(f.addr_at(frame::interpreter_frame_initial_sp_offset)), f.at_relative_or_null(frame::interpreter_frame_last_sp_offset), 142 p2i(f.unextended_sp()), expression_stack_sz); 143 return res; 144 } 145 146 inline intptr_t* ContinuationHelper::InterpretedFrame::frame_bottom(const frame& f) { // exclusive; this will not be copied with the frame 147 return (intptr_t*)f.at_relative(frame::interpreter_frame_locals_offset) + 1; // exclusive, so we add 1 word 148 } 149 150 inline intptr_t* ContinuationHelper::InterpretedFrame::frame_top(const frame& f, int callee_argsize, bool callee_interpreted) { 151 return f.unextended_sp() + (callee_interpreted ? callee_argsize : 0); 152 } 153 154 inline intptr_t* ContinuationHelper::InterpretedFrame::callers_sp(const frame& f) { 155 return f.fp() + frame::metadata_words; 156 } 157 158 #endif // CPU_AARCH64_CONTINUATIONHELPER_AARCH64_INLINE_HPP