1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
//===-- 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
|
