git: update to v1.0HEADv1.0master

1 files changed, 113 insertions, 0 deletions

diff --git a/core.h b/core.h
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+++ b/core.h
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+/************************************************************************/
+/*                                                                      */
+/*  File:           core.h                                              */
+/*  Description:    armen internals                                     */
+/*  Version:        1.0                                                 */
+/*  Author:         Otto Mattik                                         */
+/*                                                                      */
+/*  (C)Copyright Otto Mattik 2014-2021.                                 */
+/*                                                                      */
+/*  This file is a part of 'armen' (a tiny operating system).           */
+/*  'armen' is distributed under the CeCILL-V2.1 licence. For more      */
+/*  details about this licence, please visit the website cecill.info    */
+/*                                                                      */
+/************************************************************************/
+
+#ifndef _ARMEN_CORE_H_
+#define _ARMEN_CORE_H_
+
+#include "armen.h"
+
+#ifdef __AVR_ARCH__
+  #include "avr/core.h"
+#endif
+
+/*
+ * number of threads
+*/
+#define ARMEN_THREAD_MIN    2
+#define ARMEN_THREAD_MAX    8
+#if defined(THREAD)
+  #if (THREAD < 0) || (THREAD > (ARMEN_THREAD_MAX-ARMEN_THREAD_MIN))
+    #error "invalid number of threads"
+  #endif
+#else
+  #define THREAD            1
+#endif
+#define ARMEN_THREADS       (ARMEN_THREAD_MIN+THREAD)
+
+/*
+ * number of timers
+*/
+#define ARMEN_TIMER_MIN     1
+#define ARMEN_TIMER_MAX     2
+#if defined(TIMER)
+  #if (TIMER < ARMEN_TIMER_MIN) || (TIMER > ARMEN_TIMER_MAX)
+    #error "invalid number of timers"
+  #endif
+  #define ARMEN_TIMERS      TIMER
+#else
+  #define ARMEN_TIMERS      ARMEN_TIMER_MIN
+#endif
+
+typedef struct {
+    uint8_t lock;
+    uint8_t value;
+    uint8_t count;
+    uint8_t pad;
+} _sem_t;
+
+typedef struct {
+    uint8_t  status;            /* status (see below) */
+    uint8_t  rank;              /* priority set by user */
+    uint8_t  order;             /* priority set by kernel */
+    uint8_t  joinid;            /* thread where waiting for termination */
+    uint16_t events;            /* events for whitch thread is suspended  */
+    uint16_t event;             /* last event */
+    timer_t timer1;             /* timer counter 1 (used by sleep function) */
+#if (ARMEN_TIMERS == 2)
+    timer_t timer2;             /* timer counter 2 */
+#endif
+    void* (*entry)(void*);      /* thread entry point */
+    void*    param;             /* calling argument or returned value */
+    void*    istack;            /* initial value of stack pointer */
+    void*    cstack;            /* current stack pointer */
+#if defined(USE_SEM)
+    void*    sem;               /* semaphore on thread is waiting */
+#endif
+} _thread_t;
+
+/*
+ * status of a thread
+*/
+#define TS_UNUSED           0
+#define TS_RUNNING          1
+#define TS_SUSPENDED        2
+
+/*
+ * events (see also armen.h)
+*/
+#define EVENT_JOIN          0x4000
+#define EVENT_SEM           0x8000
+
+extern uint8_t volatile _cur_thread;    /* id of current thread */
+extern _thread_t _threads[];            /* table of threads */
+
+extern void  _thread_exit( void );
+
+extern void* _idle( void* );
+extern void  _schedule( void );
+extern uint8_t _disable_intr( void );
+extern void  _enable_intr( uint8_t flag );
+extern void* _init_context( void* (*entry)(void*), void* param, void* sp );
+extern void* _save_context( void );
+extern void  _restore_context( void* sp );
+
+extern void  _sys_init( void* ram_start, void* ram_end );
+extern void  _sys_clock( void );
+extern void  _scheduler( void* sp );
+extern void  _wakeup( uint16_t event, void* param );
+
+extern void  _uart_init( void );
+
+#endif