📄 os_cpu_c.lst
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C51 COMPILER V7.06 OS_CPU_C 07/29/2003 20:45:08 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 ..\keilc51\os_cpu_c.c LARGE 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 1992-2002, Jean J. Labrosse, Weston, FL
7 * All Rights Reserved
8 *
9 *
10 * 80x86/80x88 Specific code
11 * LARGE MEMORY MODEL
12 *
13 * Borland C/C++ V4.51
14 *
15 * File : OS_CPU_C.C
16 * By : Jean J. Labrosse
17 *********************************************************************************************************
18 */
19
20 #define OS_CPU_GLOBALS
21 #include "includes.h"
22
23 /*
24 *********************************************************************************************************
25 * OS INITIALIZATION HOOK
26 * (BEGINNING)
27 *
28 * Description: This function is called by OSInit() at the beginning of OSInit().
29 *
30 * Arguments : none
31 *
32 * Note(s) : 1) Interrupts should be disabled during this call.
33 *********************************************************************************************************
34 */
35 #if OS_CPU_HOOKS_EN > 0 && OS_VERSION > 203
36 void OSInitHookBegin (void) reentrant //using 0
37 {
38 1 }
39 #endif
40
41 /*
42 *********************************************************************************************************
43 * OS INITIALIZATION HOOK
44 * (END)
45 *
46 * Description: This function is called by OSInit() at the end of OSInit().
47 *
48 * Arguments : none
49 *
50 * Note(s) : 1) Interrupts should be disabled during this call.
51 *********************************************************************************************************
52 */
53 #if OS_CPU_HOOKS_EN > 0 && OS_VERSION > 203
54 void OSInitHookEnd (void) reentrant //using 0
C51 COMPILER V7.06 OS_CPU_C 07/29/2003 20:45:08 PAGE 2
55 {
56 1 }
57 #endif
58
59 /*$PAGE*/
60 /*
61 *********************************************************************************************************
62 * TASK CREATION HOOK
63 *
64 * Description: This function is called when a task is created.
65 *
66 * Arguments : ptcb is a pointer to the task control block of the task being created.
67 *
68 * Note(s) : 1) Interrupts are disabled during this call.
69 *********************************************************************************************************
70 */
71 #if OS_CPU_HOOKS_EN > 0
72 void OSTaskCreateHook (OS_TCB *ptcb) reentrant //using 0
73 {
74 1 ptcb = ptcb; /* Prevent compiler warning */
75 1 }
76 #endif
77
78
79 /*
80 *********************************************************************************************************
81 * TASK DELETION HOOK
82 *
83 * Description: This function is called when a task is deleted.
84 *
85 * Arguments : ptcb is a pointer to the task control block of the task being deleted.
86 *
87 * Note(s) : 1) Interrupts are disabled during this call.
88 *********************************************************************************************************
89 */
90 #if OS_CPU_HOOKS_EN > 0
91 void OSTaskDelHook (OS_TCB *ptcb) reentrant //using 0
92 {
93 1 ptcb = ptcb; /* Prevent compiler warning */
94 1 }
95 #endif
96
97 /*
98 *********************************************************************************************************
99 * IDLE TASK HOOK
100 *
101 * Description: This function is called by the idle task. This hook has been added to allow you to do
102 * such things as STOP the CPU to conserve power.
103 *
104 * Arguments : none
105 *
106 * Note(s) : 1) Interrupts are enabled during this call.
107 *********************************************************************************************************
108 */
109 #if OS_CPU_HOOKS_EN > 0 && OS_VERSION >= 251
110 void OSTaskIdleHook (void) reentrant //using 0
111 {
112 1
113 1 }
114 #endif
115
116 /*
C51 COMPILER V7.06 OS_CPU_C 07/29/2003 20:45:08 PAGE 3
117 *********************************************************************************************************
118 * STATISTIC TASK HOOK
119 *
120 * Description: This function is called every second by uC/OS-II's statistics task. This allows your
121 * application to add functionality to the statistics task.
122 *
123 * Arguments : none
124 *********************************************************************************************************
125 */
126
127 #if OS_CPU_HOOKS_EN > 0
128 void OSTaskStatHook (void) reentrant //using 0
129 {
130 1 }
131 #endif
132
133 /*$PAGE*/
134 /*
135 *********************************************************************************************************
136 * INITIALIZE A TASK'S STACK
137 *
138 * Description: This function is called by either OSTaskCreate() or OSTaskCreateExt() to initialize the
139 * stack frame of the task being created. This function is highly processor specific.
140 *
141 * Arguments : task is a pointer to the task code
142 *
143 * pdata is a pointer to a user supplied data area that will be passed to the task
144 * when the task first executes.
145 *
146 * ptos is a pointer to the top of stack. It is assumed that 'ptos' points to
147 * a 'free' entry on the task stack. If OS_STK_GROWTH is set to 1 then
148 * 'ptos' will contain the HIGHEST valid address of the stack. Similarly, if
149 * OS_STK_GROWTH is set to 0, the 'ptos' will contains the LOWEST valid address
150 * of the stack.
151 *
152 * opt specifies options that can be used to alter the behavior of OSTaskStkInit().
153 * (see uCOS_II.H for OS_TASK_OPT_???).
154 *
155 * Returns : Always returns the location of the new top-of-stack' once the processor registers have
156 * been placed on the stack in the proper order.
157 *
158 * Note(s) : Interrupts are enabled when your task starts executing. You can change this by setting the
159 * PSW to 0x0002 instead. In this case, interrupts would be disabled upon task startup. The
160 * application code would be responsible for enabling interrupts at the beginning of the task
161 * code. You will need to modify OSTaskIdle() and OSTaskStat() so that they enable
162 * interrupts. Failure to do this will make your system crash!
163 *********************************************************************************************************
164 */
165 //#Lin@20030715#need to modify
166 //#define UserMaxStkSize 100
167
168 OS_STK *OSTaskStkInit (void (*task)(void *pd), void *pndata, OS_STK *ptos, INT16U opt) reentrant //using
-0
169 {
170 1 // INT16U *stk;
171 1
172 1
173 1
174 1 #if 0//#Lin
stk = (INT16U *)ptos; /* Load stack pointer */
*stk-- = (INT16U)FP_SEG(pdatap); /* Simulate call to function with argument */
*stk-- = (INT16U)FP_OFF(pdatap);
C51 COMPILER V7.06 OS_CPU_C 07/29/2003 20:45:08 PAGE 4
*stk-- = (INT16U)FP_SEG(task);
*stk-- = (INT16U)FP_OFF(task);
*stk-- = (INT16U)0x0202; /* SW = Interrupts enabled */
*stk-- = (INT16U)FP_SEG(task); /* Put pointer to task on top of stack */
*stk-- = (INT16U)FP_OFF(task);
*stk-- = (INT16U)0xAAAA; /* AX = 0xAAAA */
*stk-- = (INT16U)0xCCCC; /* CX = 0xCCCC */
*stk-- = (INT16U)0xDDDD; /* DX = 0xDDDD */
*stk-- = (INT16U)0xBBBB; /* BX = 0xBBBB */
*stk-- = (INT16U)0x0000; /* SP = 0x0000 */
*stk-- = (INT16U)0x1111; /* BP = 0x1111 */
*stk-- = (INT16U)0x2222; /* SI = 0x2222 */
*stk-- = (INT16U)0x3333; /* DI = 0x3333 */
*stk-- = (INT16U)0x4444; /* ES = 0x4444 */
*stk = _DS; /* DS = Current value of DS */
#else
194 1
195 1 OS_STK *stk;
196 1 // OS_STK idata *UsrStkSP;
197 1
198 1 // *UsrStkSP = SP;
199 1 opt = opt; /* 'opt' is not used, prevent warning */
200 1 pndata = pndata;
201 1
202 1 stk = (OS_STK *)ptos; //
203 1 *stk++ = 15; //Count
204 1 *stk++ = (INT16U)task & 0xFF; //task RET
205 1 *stk++ = (INT16U)task >> 8; //task RET
206 1 // *stk++ = 0x00; //isr reti
207 1 // *stk++ = 0x00; //isr reti
208 1 *stk++ = 0x0A; //ACC
209 1 *stk++ = 0x0B; //B
210 1 *stk++ = 0x00; //DPH
211 1 *stk++ = 0x00; //DPL
212 1 *stk++ = 0x00; //PSW
213 1 *stk++ = 0x00; //R0
214 1 *stk++ = 0x01; //R1
215 1 *stk++ = 0x02; //R2
216 1 *stk++ = 0x03; //R3
217 1 *stk++ = 0x04; //R4
218 1 *stk++ = 0x05; //R5
219 1 *stk++ = 0x06; //R6
220 1 *stk++ = 0x07; //R7
221 1 // *stk++ = UsrStkSP & 0xff; //R7
222 1 // *stk++ = UsrStkSP >> 8; //R7
223 1
224 1 /*
225 1 PUSH ACC
226 1 PUSH B
227 1 PUSH DPH
228 1 PUSH DPL
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