Refactor BeRTOS to be in his own directory.

[bertos.git] / bertos / cfg / os.h

diff --git a/bertos/cfg/os.h b/bertos/cfg/os.h
new file mode 100644 (file)
index 0000000..924daad
--- /dev/null
+++ b/bertos/cfg/os.h
@@ -0,0 +1,172 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2004, 2005 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief OS-specific definitions
+ *
+ * \version $Id$
+ *
+ * \author Bernardo Innocenti <bernie@develer.com>
+ */
+
+#ifndef DEVLIB_OS_H
+#define DEVLIB_OS_H
+
+/** Macro to include OS-specific versions of the headers. */
+#define OS_HEADER(module)  PP_STRINGIZE(PP_CAT3(module, _, OS_ID).h)
+#define OS_CSOURCE(module) PP_STRINGIZE(PP_CAT3(module, _, OS_ID).c)
+
+/*
+ * OS autodetection (Some systems trigger multiple OS definitions)
+ */
+#ifdef _WIN32
+       #define OS_WIN32  1
+       #define OS_ID     win32
+
+       // FIXME: Maybe disable Win32 exceptions?
+       typedef int cpuflags_t;
+       #define IRQ_DISABLE                /* FIXME */
+       #define IRQ_ENABLE                 /* FIXME */
+       #define IRQ_SAVE_DISABLE(old_sigs) /* FIXME */
+       #define IRQ_RESTORE(old_sigs)      /* FIXME */
+
+#else
+       #define OS_WIN32  0
+#endif
+
+#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
+       #define OS_UNIX   1
+       #define OS_POSIX  1  /* Not strictly UNIX, but no way to autodetect it. */
+       #define OS_ID     posix
+
+       /*
+        * The POSIX moral equivalent of disabling IRQs is disabling signals.
+        */
+       #include <signal.h>
+       typedef sigset_t cpuflags_t;
+
+       #define SET_ALL_SIGNALS(sigs) \
+       do { \
+               sigfillset(&sigs); \
+               sigdelset(&sigs, SIGINT); \
+               sigdelset(&sigs, SIGSTOP); \
+               sigdelset(&sigs, SIGCONT); \
+       } while(0)
+
+       #define IRQ_DISABLE \
+       do { \
+               sigset_t sigs; \
+               SET_ALL_SIGNALS(sigs); \
+               sigprocmask(SIG_BLOCK, &sigs, NULL); \
+       } while (0)
+
+       #define IRQ_ENABLE \
+       do { \
+               sigset_t sigs; \
+               SET_ALL_SIGNALS(sigs); \
+               sigprocmask(SIG_UNBLOCK, &sigs, NULL); \
+       } while (0)
+
+       #define IRQ_SAVE_DISABLE(old_sigs) \
+       do { \
+               sigset_t sigs; \
+               SET_ALL_SIGNALS(sigs); \
+               sigprocmask(SIG_BLOCK, &sigs, &old_sigs); \
+       } while (0)
+
+       #define IRQ_RESTORE(old_sigs) \
+       do { \
+               sigprocmask(SIG_SETMASK, &old_sigs, NULL); \
+       } while (0)
+
+       #define IRQ_ENABLED() \
+       ({ \
+               sigset_t sigs; \
+               sigprocmask(SIG_SETMASK, NULL, &sigs); \
+               sigismember(&sigs, SIGALRM) ? false : true; \
+        })
+
+#else
+       #define OS_UNIX   0
+       #define OS_POSIX  0
+#endif
+
+#ifdef __linux__
+       #define OS_LINUX  1
+#else
+       #define OS_LINUX  0
+#endif
+
+#if defined(__APPLE__) && defined(__MACH__)
+       #define OS_DARWIN 1
+#else
+       #define OS_DARWIN 0
+#endif
+
+/*
+ * We want Qt and other frameworks to look like OSes because you would
+ * tipically want their portable abstractions if you're using one of these.
+ */
+#if defined(_QT)
+       #define OS_QT 1
+       #undef  OS_ID
+       #define OS_ID qt
+#else
+       #define OS_QT 0
+#endif
+
+/*
+ * Summarize hosted environments as OS_HOSTED and embedded
+ * environment with OS_EMBEDDED.
+ */
+#if OS_WIN32 || OS_UNIX || OS_DARWIN || OS_QT
+       #define OS_HOSTED   1
+       #define OS_EMBEDDED 0
+#else
+       #define OS_HOSTED   0
+       #define OS_EMBEDDED 1
+
+       /* Embedded environments fall back to CPU-specific code. */
+       #define OS_ID       CPU_ID
+#endif
+
+/* Self-check for the detection */
+#if !defined(OS_ID)
+       #error OS_ID not defined
+#endif
+#if OS_HOSTED && OS_EMBEDDED
+       #error Both hosted and embedded OS environment
+#endif
+#if !OS_HOSTED && !OS_EMBEDDED
+       #error Neither hosted nor embedded OS environment
+#endif
+
+#endif /* DEVLIB_OS_H */