1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 #include <stdint.h> 32 33 #include <unwindstack/MachineArm64.h> 34 35 namespace unwindstack { 36 37 struct arm64_stack_t { 38 uint64_t ss_sp; // void __user* 39 int32_t ss_flags; // int 40 uint64_t ss_size; // size_t 41 }; 42 43 struct arm64_sigset_t { 44 uint64_t sig; // unsigned long 45 }; 46 47 struct arm64_mcontext_t { 48 uint64_t fault_address; // __u64 49 uint64_t regs[ARM64_REG_LAST]; // __u64 50 uint64_t pstate; // __u64 51 // Nothing else is used, so don't define it. 52 }; 53 54 struct arm64_ucontext_t { 55 uint64_t uc_flags; // unsigned long 56 uint64_t uc_link; // struct ucontext* 57 arm64_stack_t uc_stack; 58 arm64_sigset_t uc_sigmask; 59 // The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM64. 60 char __padding[128 - sizeof(arm64_sigset_t)]; 61 // The full structure requires 16 byte alignment, but our partial structure 62 // doesn't, so force the alignment. 63 arm64_mcontext_t uc_mcontext __attribute__((aligned(16))); 64 }; 65 66 } // namespace unwindstack 67