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 #ifndef _LIBUNWINDSTACK_UCONTEXT_ARM64_H 30 #define _LIBUNWINDSTACK_UCONTEXT_ARM64_H 31 32 #include <stdint.h> 33 34 #include <unwindstack/MachineArm64.h> 35 36 namespace unwindstack { 37 38 struct arm64_stack_t { 39 uint64_t ss_sp; // void __user* 40 int32_t ss_flags; // int 41 uint64_t ss_size; // size_t 42 }; 43 44 struct arm64_sigset_t { 45 uint64_t sig; // unsigned long 46 }; 47 48 struct arm64_mcontext_t { 49 uint64_t fault_address; // __u64 50 uint64_t regs[ARM64_REG_LAST]; // __u64 51 uint64_t pstate; // __u64 52 // Nothing else is used, so don't define it. 53 }; 54 55 struct arm64_ucontext_t { 56 uint64_t uc_flags; // unsigned long 57 uint64_t uc_link; // struct ucontext* 58 arm64_stack_t uc_stack; 59 arm64_sigset_t uc_sigmask; 60 // The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM64. 61 char __padding[128 - sizeof(arm64_sigset_t)]; 62 // The full structure requires 16 byte alignment, but our partial structure 63 // doesn't, so force the alignment. 64 arm64_mcontext_t uc_mcontext __attribute__((aligned(16))); 65 }; 66 67 } // namespace unwindstack 68 69 #endif // _LIBUNWINDSTACK_UCONTEXT_ARM64_H 70