ice40: split out cells_map.v into ff_map.v

[yosys.git] / kernel / log.h

diff --git a/kernel/log.h b/kernel/log.h
index 5478482ac4f0952874d16464fa458a4b9748103c..dee5d44d78969ce2545b22a3310229b0467c4b65 100644 (file)
--- 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;