1 /*
2  *  Created by Phil on 3/12/2013.
3  *  Copyright 2013 Two Blue Cubes Ltd. All rights reserved.
4  *
5  *  Distributed under the Boost Software License, Version 1.0. (See accompanying
6  *  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7  *
8  */
9 #ifndef TWOBLUECUBES_CATCH_DEBUGGER_H_INCLUDED
10 #define TWOBLUECUBES_CATCH_DEBUGGER_H_INCLUDED
11 
12 #include "catch_platform.h"
13 
14 namespace Catch {
15     bool isDebuggerActive();
16 }
17 
18 #ifdef CATCH_PLATFORM_MAC
19 
20     #if defined(__i386__) || defined(__x86_64__)
21         #define CATCH_TRAP() __asm__("int $3\n" : : ) /* NOLINT */
22     #elif defined(__aarch64__)
23         #define CATCH_TRAP()  __asm__(".inst 0xd4200000")
24     #endif
25 
26 #elif defined(CATCH_PLATFORM_IPHONE)
27 
28     // use inline assembler
29     #if defined(__i386__) || defined(__x86_64__)
30         #define CATCH_TRAP()  __asm__("int $3")
31     #elif defined(__aarch64__)
32         #define CATCH_TRAP()  __asm__(".inst 0xd4200000")
33     #elif defined(__arm__) && !defined(__thumb__)
34         #define CATCH_TRAP()  __asm__(".inst 0xe7f001f0")
35     #elif defined(__arm__) &&  defined(__thumb__)
36         #define CATCH_TRAP()  __asm__(".inst 0xde01")
37     #endif
38 
39 #elif defined(CATCH_PLATFORM_LINUX)
40     // If we can use inline assembler, do it because this allows us to break
41     // directly at the location of the failing check instead of breaking inside
42     // raise() called from it, i.e. one stack frame below.
43     #if defined(__GNUC__) && (defined(__i386) || defined(__x86_64))
44         #define CATCH_TRAP() asm volatile ("int $3") /* NOLINT */
45     #else // Fall back to the generic way.
46         #include <signal.h>
47 
48         #define CATCH_TRAP() raise(SIGTRAP)
49     #endif
50 #elif defined(_MSC_VER)
51     #define CATCH_TRAP() __debugbreak()
52 #elif defined(__MINGW32__)
53     extern "C" __declspec(dllimport) void __stdcall DebugBreak();
54     #define CATCH_TRAP() DebugBreak()
55 #endif
56 
57 #ifndef CATCH_BREAK_INTO_DEBUGGER
58     #ifdef CATCH_TRAP
59         #define CATCH_BREAK_INTO_DEBUGGER() []{ if( Catch::isDebuggerActive() ) { CATCH_TRAP(); } }()
60     #else
61         #define CATCH_BREAK_INTO_DEBUGGER() []{}()
62     #endif
63 #endif
64 
65 #endif // TWOBLUECUBES_CATCH_DEBUGGER_H_INCLUDED
66