--- /dev/null
+; FreeRTOS.org V5.1.1 - Copyright (C) 2003-2008 Richard Barry.\r
+;\r
+; This file is part of the FreeRTOS.org distribution.\r
+;\r
+; FreeRTOS.org is free software; you can redistribute it and/or modify\r
+; it under the terms of the GNU General Public License as published by\r
+; the Free Software Foundation; either version 2 of the License, or\r
+; (at your option) any later version.\r
+;\r
+; FreeRTOS.org is distributed in the hope that it will be useful,\r
+; but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+; GNU General Public License for more details.\r
+;\r
+; You should have received a copy of the GNU General Public License\r
+; along with FreeRTOS.org; if not, write to the Free Software\r
+; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r
+;\r
+; A special exception to the GPL can be applied should you wish to distribute\r
+; a combined work that includes FreeRTOS.org, without being obliged to provide\r
+; the source code for any proprietary components. See the licensing section\r
+; of http://www.FreeRTOS.org for full details of how and when the exception\r
+; can be applied.\r
+;\r
+; ***************************************************************************\r
+; See http://www.FreeRTOS.org for documentation, latest information, license\r
+; and contact details. Please ensure to read the configuration and relevant\r
+; port sections of the online documentation.\r
+; ***************************************************************************\r
+;\r
+;------------------------------------------------------------------------------\r
+; Note: Select the correct include files for the device used by the application. \r
+#include "FreeRTOSConfig.h"\r
+;------------------------------------------------------------------------------\r
+\r
+; Functions used by scheduler\r
+;------------------------------------------------------------------------------ \r
+ EXTERN vTaskSwitchContext\r
+ EXTERN vTaskIncrementTick\r
+\r
+; Variables used by scheduler\r
+;------------------------------------------------------------------------------ \r
+ EXTERN pxCurrentTCB\r
+ EXTERN usCriticalNesting\r
+\r
+; Functions implemented in this file\r
+;------------------------------------------------------------------------------\r
+ PUBLIC vPortYield\r
+ PUBLIC vPortStart\r
+\r
+; Security ID definition\r
+;------------------------------------------------------------------------------ \r
+#define CG_SECURITY0 0FFH\r
+#define CG_SECURITY1 0FFH\r
+#define CG_SECURITY2 0FFH\r
+#define CG_SECURITY3 0FFH\r
+#define CG_SECURITY4 0FFH\r
+#define CG_SECURITY5 0FFH\r
+#define CG_SECURITY6 0FFH\r
+#define CG_SECURITY7 0FFH\r
+#define CG_SECURITY8 0FFH\r
+#define CG_SECURITY9 0FFH\r
+\r
+; Option Byte definitions\r
+;------------------------------------------------------------------------------\r
+#define CG_OPTION7A 0x00\r
+#define CG_OPTION7B 0x04\r
+#define OPT7C 0x00\r
+#define OPT7D 0x00\r
+#define OPT7E 0x00\r
+#define OPT7F 0x00\r
+\r
+; Tick ISR Prototype\r
+;------------------------------------------------------------------------------\r
+ PUBWEAK `??MD_INTTM0EQ0??INTVEC 608`\r
+ PUBLIC MD_INTTM0EQ0\r
+\r
+MD_INTTM0EQ0 SYMBOL "MD_INTTM0EQ0"\r
+`??MD_INTTM0EQ0??INTVEC 608` SYMBOL "??INTVEC 608", MD_INTTM0EQ0\r
+\r
+;------------------------------------------------------------------------------\r
+; portSAVE_CONTEXT MACRO\r
+; Saves the context of the remaining general purpose registers\r
+; and the usCriticalNesting Value of the active Task onto the task stack\r
+; saves stack pointer to the TCB\r
+;------------------------------------------------------------------------------\r
+portSAVE_CONTEXT MACRO \r
+#if configDATA_MODE == 1 ; Using the Tiny data model\r
+ prepare {r20,r21,r22,r23,r24,r25,r26,r27,r28,r29,r30},76,sp ; save general purpose registers\r
+ sst.w r19,72[ep]\r
+ sst.w r18,68[ep]\r
+ sst.w r17,64[ep]\r
+ sst.w r16,60[ep]\r
+ sst.w r15,56[ep]\r
+ sst.w r14,52[ep]\r
+ sst.w r13,48[ep]\r
+ sst.w r12,44[ep]\r
+ sst.w r11,40[ep]\r
+ sst.w r10,36[ep]\r
+ sst.w r9,32[ep]\r
+ sst.w r8,28[ep]\r
+ sst.w r7,24[ep]\r
+ sst.w r6,20[ep]\r
+ sst.w r5,16[ep]\r
+ sst.w r4,12[ep]\r
+#else ; Using the Small/Large data model\r
+ prepare {r20,r21,r22,r23,r24,r26,r27,r28,r29,r30},72,sp ; save general purpose registers\r
+ sst.w r19,68[ep]\r
+ sst.w r18,64[ep]\r
+ sst.w r17,60[ep]\r
+ sst.w r16,56[ep]\r
+ sst.w r15,52[ep]\r
+ sst.w r14,48[ep]\r
+ sst.w r13,44[ep]\r
+ sst.w r12,40[ep]\r
+ sst.w r11,36[ep]\r
+ sst.w r10,32[ep]\r
+ sst.w r9,28[ep]\r
+ sst.w r8,24[ep]\r
+ sst.w r7,20[ep]\r
+ sst.w r6,16[ep]\r
+ sst.w r5,12[ep]\r
+#endif /* configDATA_MODE */\r
+ sst.w r2,8[ep]\r
+ sst.w r1,4[ep]\r
+ MOVHI hi1(usCriticalNesting),r0,r1 ; save usCriticalNesting value to stack \r
+ ld.w lw1(usCriticalNesting)[r1],r2\r
+ sst.w r2,0[ep]\r
+ MOVHI hi1(pxCurrentTCB),r0,r1 ; save SP to top of current TCB\r
+ ld.w lw1(pxCurrentTCB)[r1],r2\r
+ st.w sp,0[r2]\r
+ ENDM\r
+;------------------------------------------------------------------------------\r
+\r
+;------------------------------------------------------------------------------\r
+; portRESTORE_CONTEXT MACRO\r
+; Gets stack pointer from the current TCB\r
+; Restores the context of the usCriticalNesting value and general purpose\r
+; registers of the selected task from the task stack \r
+;------------------------------------------------------------------------------\r
+portRESTORE_CONTEXT MACRO\r
+ MOVHI hi1(pxCurrentTCB),r0,r1 ; get Stackpointer address\r
+ ld.w lw1(pxCurrentTCB)[r1],sp\r
+ MOV sp,r1\r
+ ld.w 0[r1],sp ; load stackpointer\r
+ MOV sp,ep ; set stack pointer to element pointer\r
+ sld.w 0[ep],r1 ; load usCriticalNesting value from stack\r
+ MOVHI hi1(usCriticalNesting),r0,r2\r
+ st.w r1,lw1(usCriticalNesting)[r2]\r
+ sld.w 4[ep],r1 ; restore general purpose registers\r
+ sld.w 8[ep],r2 \r
+#if configDATA_MODE == 1 ; Using Tiny data model\r
+ sld.w 12[ep],r4\r
+ sld.w 16[ep],r5\r
+ sld.w 20[ep],r6\r
+ sld.w 24[ep],r7\r
+ sld.w 28[ep],r8\r
+ sld.w 32[ep],r9\r
+ sld.w 36[ep],r10\r
+ sld.w 40[ep],r11\r
+ sld.w 44[ep],r12\r
+ sld.w 48[ep],r13\r
+ sld.w 52[ep],r14\r
+ sld.w 56[ep],r15\r
+ sld.w 60[ep],r16\r
+ sld.w 64[ep],r17\r
+ sld.w 68[ep],r18\r
+ sld.w 72[ep],r19\r
+ dispose 76,{r20,r21,r22,r23,r24,r25,r26,r27,r28,r29,r30}\r
+#else ; Using Small/Large data model\r
+ sld.w 12[ep],r5\r
+ sld.w 16[ep],r6\r
+ sld.w 20[ep],r7\r
+ sld.w 24[ep],r8\r
+ sld.w 28[ep],r9\r
+ sld.w 32[ep],r10\r
+ sld.w 36[ep],r11\r
+ sld.w 40[ep],r12\r
+ sld.w 44[ep],r13\r
+ sld.w 48[ep],r14\r
+ sld.w 52[ep],r15\r
+ sld.w 56[ep],r16\r
+ sld.w 60[ep],r17\r
+ sld.w 64[ep],r18\r
+ sld.w 68[ep],r19\r
+ dispose 72,{r20,r21,r22,r23,r24,r26,r27,r28,r29,r30}\r
+#endif /* configDATA_MODE */ \r
+ ENDM\r
+;------------------------------------------------------------------------------\r
+\r
+;------------------------------------------------------------------------------\r
+; Restore the context of the first task that is going to run.\r
+;\r
+; Input: NONE\r
+;\r
+; Call: CALL vPortStart\r
+;\r
+; Output: NONE\r
+;------------------------------------------------------------------------------ \r
+ RSEG CODE:CODE\r
+vPortStart:\r
+ portRESTORE_CONTEXT ; Restore the context of whichever task the ...\r
+ ld.w 0[sp],lp \r
+ ldsr lp,5 ; restore PSW\r
+ DI\r
+ ld.w 4[sp],lp ; restore LP\r
+ ld.w 8[sp],lp ; restore LP\r
+ ADD 0x0C,sp ; set SP to right position\r
+ EI\r
+ jmp [lp]\r
+;------------------------------------------------------------------------------ \r
+\r
+;------------------------------------------------------------------------------\r
+; Port Yield function to check for a Task switch in the cooperative and \r
+; preemptive mode\r
+;\r
+; Input: NONE\r
+;\r
+; Call: CALL vPortYield\r
+;\r
+; Output: NONE\r
+;------------------------------------------------------------------------------\r
+ RSEG CODE:CODE\r
+vPortYield:\r
+ DI\r
+ ADD -0x0C,sp ; prepare stack to save necessary values\r
+ st.w lp,8[sp] ; save LP to stack\r
+ st.w lp,4[sp] ; save LP to stack\r
+ stsr 5,lp\r
+ st.w lp,0[sp] ; save PSW to stack\r
+ portSAVE_CONTEXT ; Save the context of the current task.\r
+ jarl vTaskSwitchContext,lp ; Call the scheduler.\r
+ portRESTORE_CONTEXT ; Restore the context of whichever task the ...\r
+ ld.w 0[sp],lp ; restore EIPSW\r
+ ldsr lp,1\r
+ ld.w 4[sp],lp ; restore PIPC\r
+ ldsr lp,0\r
+ ld.w 8[sp],lp ; restore LP\r
+ add 0x0C,sp \r
+ RETI\r
+;------------------------------------------------------------------------------\r
+\r
+;------------------------------------------------------------------------------\r
+; Perform the necessary steps of the Tick Count Increment and Task Switch\r
+; depending on the chosen kernel configuration \r
+;\r
+; Input: NONE\r
+;\r
+; Call: ISR \r
+;\r
+; Output: NONE\r
+;------------------------------------------------------------------------------ \r
+#if configUSE_PREEMPTION == 1 ; use preemptive kernel mode\r
+\r
+MD_INTTM0EQ0:\r
+ \r
+ add -0x0C,sp ; prepare stack to save necessary values\r
+ st.w lp,8[sp] ; store LP to stack\r
+ stsr 0,r31\r
+ st.w lp,4[sp] ; store EIPC to stack\r
+ stsr 1,lp\r
+ st.w lp,0[sp] ; store EIPSW to stack\r
+ portSAVE_CONTEXT ; Save the context of the current task.\r
+ jarl vTaskIncrementTick,lp ; Call the timer tick function.\r
+ jarl vTaskSwitchContext,lp ; Call the scheduler.\r
+ portRESTORE_CONTEXT ; Restore the context of whichever task the ...\r
+ ; ... scheduler decided should run.\r
+ ld.w 0[sp],lp ; restore EIPSW from stack\r
+ ldsr lp,1\r
+ ld.w 4[sp],lp ; restore EIPC from stack\r
+ ldsr lp,0\r
+ ld.w 8[sp],lp ; restore LP from stack\r
+ add 0x0C,sp ; set SP to right position\r
+\r
+ RETI \r
+;------------------------------------------------------------------------------ \r
+#else ; use cooperative kernel mode\r
+\r
+MD_INTTM0EQ0:\r
+ prepare {lp,ep},8,sp\r
+ sst.w r1,4[ep]\r
+ sst.w r5,0[ep]\r
+ jarl vTaskIncrementTick,lp ; Call the timer tick function.\r
+ sld.w 0[ep],r5\r
+ sld.w 4[ep],r1\r
+ dispose 8,{lp,ep}\r
+ RETI \r
+#endif /* configUSE_PREEMPTION */\r
+\r
+;------------------------------------------------------------------------------\r
+ COMMON INTVEC:CODE:ROOT(2)\r
+ ORG 608\r
+`??MD_INTTM0EQ0??INTVEC 608`:\r
+ JR MD_INTTM0EQ0\r
+\r
+ RSEG NEAR_ID:CONST:SORT:NOROOT(2)\r
+`?<Initializer for usCriticalNesting>`:\r
+ DW 10\r
+ \r
+;------------------------------------------------------------------------------ \r
+; set microcontroller security ID\r
+\r
+ COMMON INTVEC:CODE:ROOT(2)\r
+ ORG 70H\r
+`SECUID`:\r
+ DB CG_SECURITY0\r
+ DB CG_SECURITY1\r
+ DB CG_SECURITY2\r
+ DB CG_SECURITY3\r
+ DB CG_SECURITY4\r
+ DB CG_SECURITY5\r
+ DB CG_SECURITY6\r
+ DB CG_SECURITY7\r
+ DB CG_SECURITY8\r
+ DB CG_SECURITY9\r
+\r
+;------------------------------------------------------------------------------ \r
+; set microcontroller option bytes\r
+\r
+ COMMON INTVEC:CODE:ROOT(2)\r
+ ORG 7AH\r
+`OPTBYTES`:\r
+ DB CG_OPTION7A\r
+ DB CG_OPTION7B\r
+ DB OPT7C\r
+ DB OPT7D\r
+ DB OPT7E\r
+ DB OPT7F\r
+ \r
+ END
\ No newline at end of file
projects / freertos / commitdiff