diff options
Diffstat (limited to 'Source/portable/IAR/78K0R/ISR_Support.h')
| -rw-r--r-- | Source/portable/IAR/78K0R/ISR_Support.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/Source/portable/IAR/78K0R/ISR_Support.h b/Source/portable/IAR/78K0R/ISR_Support.h new file mode 100644 index 00000000..6b291cc9 --- /dev/null +++ b/Source/portable/IAR/78K0R/ISR_Support.h @@ -0,0 +1,99 @@ +; FreeRTOS.org V5.1.1 - Copyright (C) 2003-2008 Richard Barry.
+;
+; This file is part of the FreeRTOS.org distribution.
+;
+; FreeRTOS.org 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.org 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.org; 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.org, 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.
+; ***************************************************************************
+;
+;------------------------------------------------------------------------------
+
+#include "FreeRTOSConfig.h"
+
+; Variables used by scheduler
+;------------------------------------------------------------------------------
+ EXTERN pxCurrentTCB
+ EXTERN usCriticalNesting
+
+;------------------------------------------------------------------------------
+; portSAVE_CONTEXT MACRO
+; Saves the context of the remaining general purpose registers, CS and ES
+; (only in far memory mode) registers
+; the usCriticalNesting Value and the Stack Pointer
+; of the active Task onto the task stack
+;------------------------------------------------------------------------------
+portSAVE_CONTEXT MACRO
+
+ PUSH AX ; save AX Register to stack
+ PUSH HL
+#if configMEMORY_MODE == 1
+ MOV A, CS ; save CS register
+ XCH A, X
+ MOV A, ES ; save ES register
+ PUSH AX
+#else
+ MOV A, CS ; save CS register
+ PUSH AX
+#endif
+ PUSH DE ; save the remaining general purpose registers
+ PUSH BC
+ MOVW AX, usCriticalNesting ; save the usCriticalNesting value
+ PUSH AX
+ MOVW AX, pxCurrentTCB ; save the Stack pointer
+ MOVW HL, AX
+ MOVW AX, SP
+ MOVW [HL], AX
+ ENDM
+;------------------------------------------------------------------------------
+
+;------------------------------------------------------------------------------
+; portRESTORE_CONTEXT MACRO
+; Restores the context of the Stack Pointer, usCriticalNesting
+; value, general purpose registers and the CS and ES (only in far memory mode)
+; of the selected task from the task stack
+;------------------------------------------------------------------------------
+
+portRESTORE_CONTEXT MACRO
+ MOVW AX, pxCurrentTCB ; restore the Stack pointer
+ MOVW HL, AX
+ MOVW AX, [HL]
+ MOVW SP, AX
+ POP AX ; restore usCriticalNesting value
+ MOVW usCriticalNesting, AX
+ POP BC ; restore the necessary general purpose registers
+ POP DE
+#if configMEMORY_MODE == 1
+ POP AX ; restore the ES register
+ MOV ES, A
+ XCH A, X ; restore the CS register
+ MOV CS, A
+#else
+ POP AX
+ MOV CS, A ; restore CS register
+#endif
+ POP HL ; restore general purpose register HL
+ POP AX ; restore AX
+ ENDM
+;------------------------------------------------------------------------------
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