diff options
Diffstat (limited to 'kernel/log.h')
| -rw-r--r-- | kernel/log.h | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/kernel/log.h b/kernel/log.h index 5478482ac..dee5d44d7 100644 --- a/kernel/log.h +++ b/kernel/log.h @@ -50,9 +50,12 @@ std::regex_constants::egrep) #endif -#ifndef _WIN32 +#if defined(_WIN32) +# include <intrin.h> +#else # include <sys/time.h> # include <sys/resource.h> +# include <signal.h> #endif #if defined(_MSC_VER) @@ -69,6 +72,41 @@ YOSYS_NAMESPACE_BEGIN #define S__LINE__sub1(x) S__LINE__sub2(x) #define S__LINE__ S__LINE__sub1(__LINE__) +// YS_DEBUGTRAP is a macro that is functionally equivalent to a breakpoint +// if the platform provides such functionality, and does nothing otherwise. +// If no debugger is attached, it starts a just-in-time debugger if available, +// and crashes the process otherwise. +#if defined(_WIN32) +# define YS_DEBUGTRAP __debugbreak() +#else +# ifndef __has_builtin +// __has_builtin is a GCC/Clang extension; on a different compiler (or old enough GCC/Clang) +// that does not have it, using __has_builtin(...) is a syntax error. +# define __has_builtin(x) 0 +# endif +# if __has_builtin(__builtin_debugtrap) +# define YS_DEBUGTRAP __builtin_debugtrap() +# elif defined(__unix__) +# define YS_DEBUGTRAP raise(SIGTRAP) +# else +# define YS_DEBUGTRAP do {} while(0) +# endif +#endif + +// YS_DEBUGTRAP_IF_DEBUGGING is a macro that is functionally equivalent to a breakpoint +// if a debugger is attached, and does nothing otherwise. +#if defined(_WIN32) +# define YS_DEBUGTRAP_IF_DEBUGGING do { if (IsDebuggerPresent()) DebugBreak(); } while(0) +#elif defined(__unix__) +// There is no reliable (or portable) *nix equivalent of IsDebuggerPresent(). However, +// debuggers will stop when SIGTRAP is raised, even if the action is set to ignore. +# define YS_DEBUGTRAP_IF_DEBUGGING do { \ + sighandler_t old = signal(SIGTRAP, SIG_IGN); raise(SIGTRAP); signal(SIGTRAP, old); \ + } while(0) +#else +# define YS_DEBUGTRAP_IF_DEBUGGING do {} while(0) +#endif + struct log_cmd_error_exception { }; extern std::vector<FILE*> log_files; |