git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6648 35acf78f-673a-0410-8e92-d51de3d6d3f4

3 files changed, 601 insertions, 0 deletions

diff --git a/os/nil/ports/AVR/compilers/GCC/niltypes.h b/os/nil/ports/AVR/compilers/GCC/niltypes.h
new file mode 100644
index 000000000..25d849d77
--- /dev/null
+++ b/os/nil/ports/AVR/compilers/GCC/niltypes.h
@@ -0,0 +1,87 @@
+/*

+    ChibiOS/NIL - Copyright (C) 2012,2013 Giovanni Di Sirio.

+

+    This file is part of ChibiOS/NIL.

+

+    ChibiOS/NIL 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 3 of the License, or

+    (at your option) any later version.

+

+    ChibiOS/NIL 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, see <http://www.gnu.org/licenses/>.

+*/

+

+/**

+ * @file    AVR/compilers/GCC/niltypes.h

+ * @brief   AVR port system types.

+ *

+ * @addtogroup AVR_CORE

+ * @{

+ */

+

+#ifndef _NILTYPES_H_

+#define _NILTYPES_H_

+

+#include <stddef.h>

+#include <stdint.h>

+#include <stdbool.h>

+

+/**

+ * @name    Common constants

+ */

+/**

+ * @brief   Generic 'false' boolean constant.

+ */

+#if !defined(FALSE) || defined(__DOXYGEN__)

+#define FALSE                   0

+#endif

+

+/**

+ * @brief   Generic 'true' boolean constant.

+ */

+#if !defined(TRUE) || defined(__DOXYGEN__)

+#define TRUE                    (!FALSE)

+#endif

+/** @} */

+

+typedef uint8_t         syssts_t;       /**< System status word.            */

+typedef uint16_t        rtcnt_t;        /**< Realtime counter.              */

+typedef uint8_t         tstate_t;       /**< Thread state.                  */

+typedef int16_t         msg_t;          /**< Inter-thread message.          */

+typedef uint8_t         eventmask_t;    /**< Mask of event identifiers.     */

+typedef int8_t          cnt_t;          /**< Generic signed counter.        */

+typedef uint8_t         ucnt_t;         /**< Generic unsigned counter.      */

+

+/**

+ * @brief   ROM constant modifier.

+ * @note    It is set to use the "const" keyword in this port.

+ */

+#define ROMCONST const

+

+/**

+ * @brief   Makes functions not inlineable.

+ * @note    If the compiler does not support such attribute then the

+ *          realtime counter precision could be degraded.

+ */

+#define NOINLINE __attribute__((noinline))

+

+/**

+ * @brief   Optimized thread function declaration macro.

+ */

+#define PORT_THD_FUNCTION(tname, arg)                                       \

+  __attribute__((noreturn)) void tname(void *arg)

+

+/**

+ * @brief   Packed variable specifier.

+ */

+#define PACKED_VAR __attribute__((packed))

+

+#endif /* _NILTYPES_H_ */

+

+/** @} */

diff --git a/os/nil/ports/AVR/nilcore.c b/os/nil/ports/AVR/nilcore.c
new file mode 100644
index 000000000..eb762b00b
--- /dev/null
+++ b/os/nil/ports/AVR/nilcore.c
@@ -0,0 +1,138 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,

+                 2011,2012,2013 Giovanni Di Sirio.

+

+    This file is part of ChibiOS/RT.

+

+    ChibiOS/RT 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 3 of the License, or

+    (at your option) any later version.

+

+    ChibiOS/RT 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, see <http://www.gnu.org/licenses/>.

+*/

+

+/**

+ * @file    AVR/nilcore.c

+ * @brief   AVR port code.

+ *

+ * @addtogroup AVR_CORE

+ * @{

+ */

+

+#include "nil.h"

+

+/*===========================================================================*/

+/* Module local definitions.                                                 */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Module exported variables.                                                */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Module local types.                                                       */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Module local variables.                                                   */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Module local functions.                                                   */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Module exported functions.                                                */

+/*===========================================================================*/

+

+/**

+ * @brief   Performs a context switch between two threads.

+ * @details This is the most critical code in any port, this function

+ *          is responsible for the context switch between 2 threads.

+ * @note    The implementation of this code affects <b>directly</b> the context

+ *          switch performance so optimize here as much as you can.

+ * @note    The function is declared as a weak symbol, it is possible to

+ *          redefine it in your application code.

+ *

+ * @param[in] ntp       the thread to be switched in

+ * @param[in] otp       the thread to be switched out

+ */

+#if !defined(__DOXYGEN__)

+__attribute__((naked, weak))

+#endif

+void port_switch(Thread *ntp, Thread *otp) {

+

+  asm volatile ("push    r2");

+  asm volatile ("push    r3");

+  asm volatile ("push    r4");

+  asm volatile ("push    r5");

+  asm volatile ("push    r6");

+  asm volatile ("push    r7");

+  asm volatile ("push    r8");

+  asm volatile ("push    r9");

+  asm volatile ("push    r10");

+  asm volatile ("push    r11");

+  asm volatile ("push    r12");

+  asm volatile ("push    r13");

+  asm volatile ("push    r14");

+  asm volatile ("push    r15");

+  asm volatile ("push    r16");

+  asm volatile ("push    r17");

+  asm volatile ("push    r28");

+  asm volatile ("push    r29");

+

+  asm volatile ("movw    r30, r22");

+  asm volatile ("in      r0, 0x3d");

+  asm volatile ("std     Z+5, r0");

+  asm volatile ("in      r0, 0x3e");

+  asm volatile ("std     Z+6, r0");

+

+  asm volatile ("movw    r30, r24");

+  asm volatile ("ldd     r0, Z+5");

+  asm volatile ("out     0x3d, r0");

+  asm volatile ("ldd     r0, Z+6");

+  asm volatile ("out     0x3e, r0");

+

+  asm volatile ("pop     r29");

+  asm volatile ("pop     r28");

+  asm volatile ("pop     r17");

+  asm volatile ("pop     r16");

+  asm volatile ("pop     r15");

+  asm volatile ("pop     r14");

+  asm volatile ("pop     r13");

+  asm volatile ("pop     r12");

+  asm volatile ("pop     r11");

+  asm volatile ("pop     r10");

+  asm volatile ("pop     r9");

+  asm volatile ("pop     r8");

+  asm volatile ("pop     r7");

+  asm volatile ("pop     r6");

+  asm volatile ("pop     r5");

+  asm volatile ("pop     r4");

+  asm volatile ("pop     r3");

+  asm volatile ("pop     r2");

+  asm volatile ("ret");

+}

+

+/**

+ * @brief   Start a thread by invoking its work function.

+ * @details If the work function returns @p chThdExit() is automatically

+ *          invoked.

+ */

+void _port_thread_start(void) {

+

+  chSysUnlock();

+  asm volatile ("movw    r24, r4");

+  asm volatile ("movw    r30, r2");

+  asm volatile ("icall");

+  chSysHalt(0);

+}

+

+/** @} */

diff --git a/os/nil/ports/AVR/nilcore.h b/os/nil/ports/AVR/nilcore.h
new file mode 100644
index 000000000..5028d2e88
--- /dev/null
+++ b/os/nil/ports/AVR/nilcore.h
@@ -0,0 +1,376 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,

+                 2011,2012,2013 Giovanni Di Sirio.

+

+    This file is part of ChibiOS/RT.

+

+    ChibiOS/RT 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 3 of the License, or

+    (at your option) any later version.

+

+    ChibiOS/RT 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, see <http://www.gnu.org/licenses/>.

+*/

+

+/**

+ * @file    AVR/nilcore.h

+ * @brief   AVR port macros and structures.

+ *

+ * @addtogroup AVR_CORE

+ * @{

+ */

+

+#ifndef _NILCORE_H_

+#define _NILCORE_H_

+

+/*===========================================================================*/

+/* Module constants.                                                         */

+/*===========================================================================*/

+

+/**

+ * @name    Architecture and Compiler

+ * @{

+ */

+/**

+ * @brief   Macro defining the port architecture.

+ */

+#define PORT_ARCHITECTURE_XXX

+

+/**

+ * @brief   Name of the implemented architecture.

+ */

+#define PORT_ARCHITECTURE_NAME          "XXX"

+

+/**

+ * @brief   Name of the architecture variant.

+ */

+#define PORT_CORE_VARIANT_NAME          "XXXX-Y"

+

+/**

+ * @brief   Compiler name and version.

+ */

+#if defined(__GNUC__) || defined(__DOXYGEN__)

+#define PORT_COMPILER_NAME              "GCC " __VERSION__

+

+#else

+#error "unsupported compiler"

+#endif

+

+/**

+ * @brief   Port-specific information string.

+ */

+#define PORT_INFO                       "port description"

+

+/**

+ * @brief   This port supports a realtime counter.

+ */

+#define PORT_SUPPORTS_RT                FALSE

+/** @} */

+

+/*===========================================================================*/

+/* Module pre-compile time settings.                                         */

+/*===========================================================================*/

+

+/**

+ * @brief   Stack size for the system idle thread.

+ * @details This size depends on the idle thread implementation, usually

+ *          the idle thread should take no more space than those reserved

+ *          by @p PORT_INT_REQUIRED_STACK.

+ */

+#if !defined(PORT_IDLE_THREAD_STACK_SIZE) || defined(__DOXYGEN__)

+#define PORT_IDLE_THREAD_STACK_SIZE     16

+#endif

+

+/**

+ * @brief   Per-thread stack overhead for interrupts servicing.

+ * @details This constant is used in the calculation of the correct working

+ *          area size.

+ */

+#if !defined(PORT_INT_REQUIRED_STACK) || defined(__DOXYGEN__)

+#define PORT_INT_REQUIRED_STACK         32

+#endif

+

+/**

+ * @brief   Enables an alternative timer implementation.

+ * @details Usually the port uses a timer interface defined in the file

+ *          @p nilcore_timer.h, if this option is enabled then the file

+ *          @p nilcore_timer_alt.h is included instead.

+ */

+#if !defined(PORT_USE_ALT_TIMER)

+#define PORT_USE_ALT_TIMER              FALSE

+#endif

+

+/*===========================================================================*/

+/* Derived constants and error checks.                                       */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Module data structures and types.                                         */

+/*===========================================================================*/

+

+/* The following code is not processed when the file is included from an

+   asm module.*/

+#if !defined(_FROM_ASM_)

+

+/**

+ * @brief   Type of system time.

+ */

+#if (NIL_CFG_ST_RESOLUTION == 32) || defined(__DOXYGEN__)

+typedef uint32_t systime_t;

+#else

+typedef uint16_t systime_t;

+#endif

+

+/**

+ * @brief   Type of stack and memory alignment enforcement.

+ */

+typedef uint64_t stkalign_t;

+

+/**

+ * @brief   Interrupt saved context.

+ * @details This structure represents the stack frame saved during a

+ *          preemption-capable interrupt handler.

+ */

+struct port_extctx {

+

+};

+

+/**

+ * @brief   System saved context.

+ * @details This structure represents the inner stack frame during a context

+ *          switching.

+ */

+struct port_intctx {

+

+};

+

+#endif /* !defined(_FROM_ASM_) */

+

+/*===========================================================================*/

+/* Module macros.                                                            */

+/*===========================================================================*/

+

+/**

+ * @brief   Platform dependent part of the @p chThdCreateI() API.

+ * @details This code usually setup the context switching frame represented

+ *          by an @p port_intctx structure.

+ */

+#define PORT_SETUP_CONTEXT(tp, wend, pf, arg) {                             \

+}

+

+/**

+ * @brief   Computes the thread working area global size.

+ * @note    There is no need to perform alignments in this macro.

+ */

+#define PORT_WA_SIZE(n) (sizeof(struct port_intctx) +                       \

+                         sizeof(struct port_extctx) +                       \

+                         (n) + (PORT_INT_REQUIRED_STACK))

+

+/**

+ * @brief   IRQ prologue code.

+ * @details This macro must be inserted at the start of all IRQ handlers

+ *          enabled to invoke system APIs.

+ */

+#define PORT_IRQ_PROLOGUE()

+

+/**

+ * @brief   IRQ epilogue code.

+ * @details This macro must be inserted at the end of all IRQ handlers

+ *          enabled to invoke system APIs.

+ */

+#define PORT_IRQ_EPILOGUE() _port_irq_epilogue()

+

+/**

+ * @brief   IRQ handler function declaration.

+ * @note    @p id can be a function name or a vector number depending on the

+ *          port implementation.

+ */

+#define PORT_IRQ_HANDLER(id) void id(void)

+

+/**

+ * @brief   Fast IRQ handler function declaration.

+ * @note    @p id can be a function name or a vector number depending on the

+ *          port implementation.

+ */

+#define PORT_FAST_IRQ_HANDLER(id) void id(void)

+

+/**

+ * @brief   Performs a context switch between two threads.

+ * @details This is the most critical code in any port, this function

+ *          is responsible for the context switch between 2 threads.

+ * @note    The implementation of this code affects <b>directly</b> the context

+ *          switch performance so optimize here as much as you can.

+ *

+ * @param[in] ntp       the thread to be switched in

+ * @param[in] otp       the thread to be switched out

+ */

+#define port_switch(ntp, otp) _port_switch(ntp, otp)

+

+/*===========================================================================*/

+/* External declarations.                                                    */

+/*===========================================================================*/

+

+/* The following code is not processed when the file is included from an

+   asm module.*/

+#if !defined(_FROM_ASM_)

+

+#ifdef __cplusplus

+extern "C" {

+#endif

+  void _port_irq_epilogue(void);

+  void _port_switch(thread_t *ntp, thread_t *otp);

+  void _port_thread_start(void);

+#ifdef __cplusplus

+}

+#endif

+

+#endif /* !defined(_FROM_ASM_) */

+

+/*===========================================================================*/

+/* Module inline functions.                                                  */

+/*===========================================================================*/

+

+/* The following code is not processed when the file is included from an

+   asm module.*/

+#if !defined(_FROM_ASM_)

+

+/**

+ * @brief   Port-related initialization code.

+ */

+static inline void port_init(void) {

+

+}

+

+/**

+ * @brief   Returns a word encoding the current interrupts status.

+ *

+ * @return              The interrupts status.

+ */

+static inline syssts_t port_get_irq_status(void) {

+

+  return 0;

+}

+

+/**

+ * @brief   Checks the interrupt status.

+ *

+ * @param[in] sts       the interrupt status word

+ *

+ * @return              The interrupt status.

+ * @retvel false        the word specified a disabled interrupts status.

+ * @retvel true         the word specified an enabled interrupts status.

+ */

+static inline bool port_irq_enabled(syssts_t sts) {

+

+  return false;

+}

+

+/**

+ * @brief   Determines the current execution context.

+ *

+ * @return              The execution context.

+ * @retval false        not running in ISR mode.

+ * @retval true         running in ISR mode.

+ */

+static inline bool port_is_isr_context(void) {

+

+  return false;

+}

+

+/**

+ * @brief   Kernel-lock action.

+ */

+static inline void port_lock(void) {

+

+}

+

+/**

+ * @brief   Kernel-unlock action.

+ */

+static inline void port_unlock(void) {

+

+}

+

+/**

+ * @brief   Kernel-lock action from an interrupt handler.

+ */

+static inline void port_lock_from_isr(void) {

+

+}

+

+/**

+ * @brief   Kernel-unlock action from an interrupt handler.

+ */

+static inline void port_unlock_from_isr(void) {

+

+}

+

+/**

+ * @brief   Disables all the interrupt sources.

+ */

+static inline void port_disable(void) {

+

+}

+

+/**

+ * @brief   Disables the interrupt sources below kernel-level priority.

+ */

+static inline void port_suspend(void) {

+

+}

+

+/**

+ * @brief   Enables all the interrupt sources.

+ */

+static inline void port_enable(void) {

+

+}

+

+/**

+ * @brief   Enters an architecture-dependent IRQ-waiting mode.

+ * @details The function is meant to return when an interrupt becomes pending.

+ *          The simplest implementation is an empty function or macro but this

+ *          would not take advantage of architecture-specific power saving

+ *          modes.

+ */

+static inline void port_wait_for_interrupt(void) {

+

+}

+

+/**

+ * @brief   Returns the current value of the realtime counter.

+ *

+ * @return              The realtime counter value.

+ */

+static inline rtcnt_t port_rt_get_counter_value(void) {

+

+  return 0;

+}

+

+#endif /* !defined(_FROM_ASM_) */

+

+/*===========================================================================*/

+/* Module late inclusions.                                                   */

+/*===========================================================================*/

+

+#if !defined(_FROM_ASM_)

+

+#if NIL_CFG_ST_TIMEDELTA > 0

+#if !PORT_USE_ALT_TIMER

+#include "nilcore_timer.h"

+#else /* PORT_USE_ALT_TIMER */

+#include "nilcore_timer_alt.h"

+#endif /* PORT_USE_ALT_TIMER */

+#endif /* NIL_CFG_ST_TIMEDELTA > 0 */

+

+#endif /* !defined(_FROM_ASM_) */

+

+#endif /* _NILCORE_H_ */

+

+/** @} */