| //===-- hwasan_registers.h --------------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This describes the register state retrieved by hwasan when error reporting. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef HWASAN_REGISTERS_H |
| #define HWASAN_REGISTERS_H |
| |
| #include "sanitizer_common/sanitizer_common.h" |
| #include "sanitizer_common/sanitizer_platform.h" |
| |
| #if defined(__aarch64__) |
| |
| # define CAN_GET_REGISTERS 1 |
| |
| struct Registers { |
| uptr x[32]; |
| }; |
| |
| __attribute__((always_inline, unused)) static Registers GetRegisters() { |
| Registers regs; |
| __asm__ volatile( |
| "stp x0, x1, [%1, #(8 * 0)]\n" |
| "stp x2, x3, [%1, #(8 * 2)]\n" |
| "stp x4, x5, [%1, #(8 * 4)]\n" |
| "stp x6, x7, [%1, #(8 * 6)]\n" |
| "stp x8, x9, [%1, #(8 * 8)]\n" |
| "stp x10, x11, [%1, #(8 * 10)]\n" |
| "stp x12, x13, [%1, #(8 * 12)]\n" |
| "stp x14, x15, [%1, #(8 * 14)]\n" |
| "stp x16, x17, [%1, #(8 * 16)]\n" |
| "stp x18, x19, [%1, #(8 * 18)]\n" |
| "stp x20, x21, [%1, #(8 * 20)]\n" |
| "stp x22, x23, [%1, #(8 * 22)]\n" |
| "stp x24, x25, [%1, #(8 * 24)]\n" |
| "stp x26, x27, [%1, #(8 * 26)]\n" |
| "stp x28, x29, [%1, #(8 * 28)]\n" |
| : "=m"(regs) |
| : "r"(regs.x)); |
| regs.x[30] = reinterpret_cast<uintptr_t>(__builtin_return_address(0)); |
| regs.x[31] = reinterpret_cast<uintptr_t>(__builtin_frame_address(0)); |
| return regs; |
| } |
| |
| #else |
| # define CAN_GET_REGISTERS 0 |
| #endif |
| |
| #endif // HWASAN_REGISTERS_H |