New port files for Tern E-Engine.

Source/portable/Paradigm/Tern_EE/small/PORTASM.bak

@@ -0,0 +1,76 @@
+/*
+	FreeRTOS V4.0.1 - Copyright (C) 2003-2006 Richard Barry.
+
+	This file is part of the FreeRTOS distribution.
+
+	FreeRTOS 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.
+
+	FreeRTOS 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 FreeRTOS; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+	A special exception to the GPL can be applied should you wish to distribute
+	a combined work that includes FreeRTOS, without being obliged to provide
+	the source code for any proprietary components.  See the licensing section 
+	of http://www.FreeRTOS.org for full details of how and when the exception
+	can be applied.
+
+	***************************************************************************
+	See http://www.FreeRTOS.org for documentation, latest information, license 
+	and contact details.  Please ensure to read the configuration and relevant 
+	port sections of the online documentation.
+	***************************************************************************
+*/
+
+#ifndef PORT_ASM_H
+#define PORT_ASM_H
+
+typedef void tskTCB;
+extern volatile tskTCB * volatile pxCurrentTCB;
+extern void vTaskSwitchContext( void );
+
+/*
+ * Saves the stack pointer for one task into its TCB, calls
+ * vTaskSwitchContext() to update the TCB being used, then restores the stack
+ * from the new TCB read to run the task.
+ */
+void portSWITCH_CONTEXT( void );
+
+/*
+ * Load the stack pointer from the TCB of the task which is going to be first
+ * to execute.  Then force an IRET so the registers and IP are popped off the
+ * stack.
+ */
+void portFIRST_CONTEXT( void );
+
+#define portSWITCH_CONTEXT()											\
+							asm { mov	bx, [pxCurrentTCB]			}   \
+                            asm { mov	word ptr [bx], sp			}	\
+							asm { call  far ptr vTaskSwitchContext	}	\
+							asm { mov	bx, [pxCurrentTCB]			}	\
+							asm { mov	sp, [bx]					}
+
+#define portFIRST_CONTEXT()												\
+							asm { mov	bx, [pxCurrentTCB]			}	\
+							asm { mov	sp, [bx]					}	\
+							asm { pop	bp							}	\
+							asm { pop	di							}	\
+							asm { pop	si							}	\
+   							asm { pop	ds							}	\
+   							asm { pop	es							}	\
+							asm { pop	dx							}	\
+							asm { pop	cx							}	\
+							asm { pop	bx							}	\
+							asm { pop	ax							}	\
+							asm { iret								}
+
+
+#endif