📄 os_cpu_c.lst
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C51 COMPILER V7.06 OS_CPU_C 03/04/2005 14:28:16 PAGE 1
C51 COMPILER V7.06, COMPILATION OF MODULE OS_CPU_C
OBJECT MODULE PLACED IN .\OS_CPU_C.obj
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE ..\uc_51\OS_CPU_C.C BROWSE DEBUG OBJECTEXTEND PRINT(.\OS_CPU_C.lst) OBJECT(
-.\OS_CPU_C.obj)
stmt level source
1 /*
2 *********************************************************************************************************
3 * uC/OS-II
4 * The Real-Time Kernel
5 *
6 * (c) Copyright 1992-1998, Jean J. Labrosse, Plantation, FL
7 * All Rights Reserved
8 *
9 *
10 * KeilC51 Specific code
11 * SMALL MEMORY MODEL
12 *
13 * File : OS_CPU_C.C
14 * By : Jean J. Labrosse
15 * Refer to Code Written By : Yang Yi (http://www.zlgmcu.com/philips/philips-embedsys.asp)
16 * Port to KeilC51 Small Mode By : Li Zhanglin (wzzlin@nankai.edu.cn)
17 *********************************************************************************************************
18 */
19 #define OS_CPU_GLOBALS
20 #include "..\uc_os_II\includes.h"
21
22 /*
23 *********************************************************************************************************
24 * OSTaskStkInit
25 *
26 * Description: Init stack before task running.
27 *
28 * Arguments : task is a pointer to the task code
29 *
30 * pdata is a pointer to a user supplied data area that will be passed to the task
31 * when the task first executes.
32 *
33 * ptos is a pointer to the top of stack. It is assumed that 'ptos' points to
34 * a 'free' entry on the task stack. If OS_STK_GROWTH is set to 1 then
35 * 'ptos' will contain the HIGHEST valid address of the stack. Similarly, if
36 * OS_STK_GROWTH is set to 0, the 'ptos' will contains the LOWEST valid address
37 * of the stack.
38 *
39 * opt specifies options that can be used to alter the behavior of OSTaskStkInit().
40 * (see uCOS_II.H for OS_TASK_OPT_???).
41 *
42 * Returns : Always returns the bottom of stack.
43 *
44 * Note(s) : 1) stack stored as following format
45
46 ; CONTENT START POSITION IN OSTCBStk
47 ; ---------- ----------------------
48 ; AR7
49 ; AR6
50 ; AR5
51 ; AR4
52 ; AR3
53 ; AR2
54 ; AR1
C51 COMPILER V7.06 OS_CPU_C 03/04/2005 14:28:16 PAGE 2
55 ; AR0
56 ; PSW
57 ; DPL
58 ; DPH
59 ; B
60 ; ACC
61 ; HARDWARE STACK CONTENT(NOT INCLUDE REGISTERS) 2+SmltStkSize
62 ; HARDWARE STACK SIZE(INCLUDE REGISTERS) 1+SmltStkSize
63 ; SIMULATED STACK CONTENT 1
64 ; ?C_IBP 0
65
66 *********************************************************************************************************
67 */
68
69 void DT_XDATA *OSTaskStkInit (void (DT_CODE *task)(void DT_XDATA *pd), void DT_XDATA *ppdata, void DT_XDAT
-A *ptos, INT16U opt) REENTRANT
70 {
71 1 OS_STK DT_XDATA *stk;
72 1
73 1 ppdata = ppdata;
74 1 opt = opt;
75 1
76 1 stk = (OS_STK DT_XDATA *)ptos; /* bottom of stack */
77 1 *stk++ = (0xFF + 1); /* C_IBP */
78 1 /* simulated stack size == 0 */
79 1 *stk++ = 2 + 13; /* tow bytes of return address and 13 byte registers */
80 1 *stk++ = (INT16U)task & 0xFF; /* low byte of return address */
81 1 *stk++ = (INT16U)task >> 8; /* high byte of return address */
82 1 *stk++ = 0x0A; /* ACC */
83 1 *stk++ = 0x0B; /* B */
84 1 *stk++ = 0xD1; /* DPH */
85 1 *stk++ = 0xD0; /* DPL */
86 1 *stk++ = 0x00; /* PSW */
87 1 *stk++ = 0x00; /* R0 */
88 1 *stk++ = 0x01; /* R1 */
89 1 *stk++ = 0x02; /* R2 */
90 1 *stk++ = 0x03; /* R3 */
91 1 *stk++ = 0x04; /* R4 */
92 1 *stk++ = 0x05; /* R5 */
93 1 *stk++ = 0x06; /* R6 */
94 1 *stk++ = 0x07; /* R7 */
95 1
96 1 return ((void DT_XDATA *)ptos); /* note return ptos, not stk */
97 1 }
98
99 /*
100 *********************************************************************************************************
101 * OS Time ISR
102 *
103 * Description: use T0.
104 *
105 * Arguments :
106 *
107 * Note(s) : in default, OSTickISR using register bank 0. Register pushing code will added by keilC.
108 *********************************************************************************************************
109 */
110 void OSTickISR() interrupt 1
111 {
112 1 TL0 = TIMER_24M_25MS_L;
113 1 TH0 = TIMER_24M_25MS_H;
114 1
115 1 OSIntEnter();
C51 COMPILER V7.06 OS_CPU_C 03/04/2005 14:28:16 PAGE 3
116 1 OSTimeTick();
117 1 OSIntExit();
118 1 }
119
120
121 /*$PAGE*/
122 #if OS_CPU_HOOKS_EN
123 /*
124 *********************************************************************************************************
125 * TASK CREATION HOOK
126 *
127 * Description: This function is called when a task is created.
128 *
129 * Arguments : ptcb is a pointer to the task control block of the task being created.
130 *
131 * Note(s) : 1) Interrupts are disabled during this call.
132 *********************************************************************************************************
133 */
134 void OSTaskCreateHook (OS_TCB DT_XDATA *ptcb) REENTRANT
135 {
136 1 ptcb = ptcb; /* Prevent compiler warning */
137 1 }
138
139
140 /*
141 *********************************************************************************************************
142 * TASK DELETION HOOK
143 *
144 * Description: This function is called when a task is deleted.
145 *
146 * Arguments : ptcb is a pointer to the task control block of the task being deleted.
147 *
148 * Note(s) : 1) Interrupts are disabled during this call.
149 *********************************************************************************************************
150 */
151 void OSTaskDelHook (OS_TCB DT_XDATA *ptcb) REENTRANT
152 {
153 1 ptcb = ptcb; /* Prevent compiler warning */
154 1 }
155
156 /*
157 *********************************************************************************************************
158 * TASK SWITCH HOOK
159 *
160 * Description: This function is called when a task switch is performed. This allows you to perform other
161 * operations during a context switch.
162 *
163 * Arguments : none
164 *
165 * Note(s) : 1) Interrupts are disabled during this call.
166 * 2) It is assumed that the global pointer 'OSTCBHighRdy' points to the TCB of the task that
167 * will be 'switched in' (i.e. the highest priority task) and, 'OSTCBCur' points to the
168 * task being switched out (i.e. the preempted task).
169 *********************************************************************************************************
170 */
171 void OSTaskSwHook (void) REENTRANT
172 {
173 1 }
174
175 /*
176 *********************************************************************************************************
177 * STATISTIC TASK HOOK
C51 COMPILER V7.06 OS_CPU_C 03/04/2005 14:28:16 PAGE 4
178 *
179 * Description: This function is called every second by uC/OS-II's statistics task. This allows your
180 * application to add functionality to the statistics task.
181 *
182 * Arguments : none
183 *********************************************************************************************************
184 */
185 void OSTaskStatHook (void) REENTRANT
186 {
187 1 }
188
189 /*
190 *********************************************************************************************************
191 * TICK HOOK
192 *
193 * Description: This function is called every tick.
194 *
195 * Arguments : none
196 *
197 * Note(s) : 1) Interrupts may or may not be ENABLED during this call.
198 *********************************************************************************************************
199 */
200 void OSTimeTickHook (void) REENTRANT
201 {
202 1 }
203 #endif
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 572 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- ----
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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