Adding plasma example

plasma/kernel/os_stubs.c

@@ -0,0 +1,71 @@
+/*--------------------------------------------------------------------
+ * TITLE: OS stubs
+ * AUTHOR: Steve Rhoads (rhoadss@yahoo.com)
+ * DATE CREATED: 2/18/08
+ * FILENAME: os_stubs.c
+ * PROJECT: Plasma CPU core
+ * COPYRIGHT: Software placed into the public domain by the author.
+ *    Software 'as is' without warranty.  Author liable for nothing.
+ * DESCRIPTION:
+ *--------------------------------------------------------------------*/
+#include <stdlib.h>
+#include "plasma.h"
+#include "rtos.h"
+
+unsigned char *flash;
+int beenInit;
+
+
+void FlashRead(uint16 *dst, uint32 byteOffset, int bytes)
+{
+   if(beenInit == 0)
+   {
+      beenInit = 1;
+      flash = (unsigned char*)malloc(1024*1024*16);
+      memset(flash, 0xff, sizeof(flash));
+   }
+   memcpy(dst, flash+byteOffset, bytes);
+}
+
+
+void FlashWrite(uint16 *src, uint32 byteOffset, int bytes)
+{
+   memcpy(flash+byteOffset, src, bytes);
+}
+
+
+void FlashErase(uint32 byteOffset)
+{
+   memset(flash+byteOffset, 0xff, 1024*128);
+}
+
+
+//Stub out RTOS functions
+void UartPrintfCritical(const char *format, ...) {(void)format;}
+uint32 OS_AsmInterruptEnable(uint32 state)   {(void)state; return 0;}
+void OS_Assert(void)                         {}
+OS_Thread_t *OS_ThreadSelf(void)             {return NULL;}
+void OS_ThreadSleep(int ticks)               {(void)ticks;}
+uint32 OS_ThreadTime(void)                   {return 0;}
+OS_Mutex_t *OS_MutexCreate(const char *name) {(void)name; return NULL; }
+void OS_MutexDelete(OS_Mutex_t *semaphore)   {(void)semaphore;}
+void OS_MutexPend(OS_Mutex_t *semaphore)     {(void)semaphore;}
+void OS_MutexPost(OS_Mutex_t *semaphore)     {(void)semaphore;}
+
+OS_MQueue_t *OS_MQueueCreate(const char *name,
+                             int messageCount,
+                             int messageBytes)
+{(void)name;(void)messageCount;(void)messageBytes; return NULL;}
+
+void OS_MQueueDelete(OS_MQueue_t *mQueue)    {(void)mQueue;}
+
+int OS_MQueueSend(OS_MQueue_t *mQueue, void *message) 
+{(void)mQueue;(void)message; return 0;}
+
+int OS_MQueueGet(OS_MQueue_t *mQueue, void *message, int ticks)
+{(void)mQueue;(void)message;(void)ticks; return 0;}
+
+void OS_Job(void (*funcPtr)(), void *arg0, void *arg1, void *arg2)
+{funcPtr(arg0, arg1, arg2);}
+
+