X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcpu%2Favr%2Fhw%2Fswitch_avr.S;h=50280292ad7a2e90f73aabc4b8f557a380071bc2;hb=61d659bbbdd1026c4b66a353989de19c2f6922ea;hp=93892919ff483d5bdae0a915042c2fd799c00605;hpb=0cbd71f97f523e15afe03bd400f44d1572e6bbf4;p=bertos.git

diff --git a/bertos/cpu/avr/hw/switch_avr.S b/bertos/cpu/avr/hw/switch_avr.S
index 93892919..50280292 100644
--- a/bertos/cpu/avr/hw/switch_avr.S
+++ b/bertos/cpu/avr/hw/switch_avr.S
@@ -1,28 +1,46 @@
 /*!
  * \file
  * <!--
- * Copyright 2004 Develer S.r.l. (http://www.develer.com/)
- * Copyright 1999,2000,2001 Bernardo Innocenti <bernie@develer.com>
- * This file is part of DevLib - See devlib/README for information.
- * -->
+ * This file is part of BeRTOS.
  *
- * \brief AVR context switch
+ * 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.
  *
- * \version $Id$
+ * 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.
  *
- * \author Bernardo Innocenti <bernie@develer.com>
+ * Copyright 2004, 2008 Develer S.r.l. (http://www.develer.com/)
+ * Copyright 1999, 2000, 2001 Bernie Innocenti <bernie@codewiz.org>
+ * -->
+ *
+ * \version $Id$
+ * \author Bernie Innocenti <bernie@codewiz.org>
  * \author Stefano Fedrigo <aleph@develer.com>
+ *
+ * \brief AVR context switch
+ *
  */
 
 #include <avr/io.h>
 
-/*
- * NOTE: At each change of this function affecting proc.c
- * (i.e. arguments, data stored in the stack) bump up version
- * number in asm_switch_version().
- */
-
-/* void asm_switch_context(void **new_sp, void **save_sp) */
+/* void asm_switch_context(void **new_sp [r24:r25], void **save_sp [r22:r23]) */
 .globl asm_switch_context
 asm_switch_context:
 
@@ -66,8 +84,6 @@ asm_switch_context:
 ;	push	r30	;caller-save
 ;	push	r31	;caller-save
 
-;	First parameter (new_sp) is in r24:r25, second (save_sp) in r22:r23
-
 	in	r18,SPL-__SFR_OFFSET	; r18:r19 = SP
 	in	r19,SPH-__SFR_OFFSET
 	movw	r26,r22			; X = save_sp
@@ -124,12 +140,3 @@ asm_switch_context:
 	out	SREG-__SFR_OFFSET,r0
 
 	ret
-
-
-/* int asm_switch_version(void) */
-.globl asm_switch_version
-asm_switch_version:
-	ldi r24,lo8(1)
-	ldi r25,hi8(1)
-	ret
-