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1//===-- hwasan_registers.h --------------------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This describes the register state retrieved by hwasan when error reporting.10//11//===----------------------------------------------------------------------===//12 13#ifndef HWASAN_REGISTERS_H14#define HWASAN_REGISTERS_H15 16#include "sanitizer_common/sanitizer_common.h"17#include "sanitizer_common/sanitizer_platform.h"18 19#if defined(__aarch64__)20 21# define CAN_GET_REGISTERS 122 23struct Registers {24 uptr x[32];25};26 27__attribute__((always_inline, unused)) static Registers GetRegisters() {28 Registers regs;29 __asm__ volatile(30 "stp x0, x1, [%1, #(8 * 0)]\n"31 "stp x2, x3, [%1, #(8 * 2)]\n"32 "stp x4, x5, [%1, #(8 * 4)]\n"33 "stp x6, x7, [%1, #(8 * 6)]\n"34 "stp x8, x9, [%1, #(8 * 8)]\n"35 "stp x10, x11, [%1, #(8 * 10)]\n"36 "stp x12, x13, [%1, #(8 * 12)]\n"37 "stp x14, x15, [%1, #(8 * 14)]\n"38 "stp x16, x17, [%1, #(8 * 16)]\n"39 "stp x18, x19, [%1, #(8 * 18)]\n"40 "stp x20, x21, [%1, #(8 * 20)]\n"41 "stp x22, x23, [%1, #(8 * 22)]\n"42 "stp x24, x25, [%1, #(8 * 24)]\n"43 "stp x26, x27, [%1, #(8 * 26)]\n"44 "stp x28, x29, [%1, #(8 * 28)]\n"45 : "=m"(regs)46 : "r"(regs.x));47 regs.x[30] = reinterpret_cast<uintptr_t>(__builtin_return_address(0));48 regs.x[31] = reinterpret_cast<uintptr_t>(__builtin_frame_address(0));49 return regs;50}51 52#else53# define CAN_GET_REGISTERS 054#endif55 56#endif // HWASAN_REGISTERS_H57