os_cpu_c.src
来自「我移植的uCos 2.52版本,在MCS51上运行,代码进行了一些优化,可以编译」· SRC 代码 · 共 1,279 行 · 第 1/3 页
SRC
1,279 行
; OS_CPU_C.SRC generated from: OS_CPU_C.C
; COMPILER INVOKED BY:
; C:\Keil\C51\BIN\C51.EXE OS_CPU_C.C ROM(COMPACT) BROWSE DEBUG OBJECTEXTEND
$NOMOD51
NAME OS_CPU_C
P0 DATA 080H
P1 DATA 090H
P2 DATA 0A0H
P3 DATA 0B0H
T0 BIT 0B0H.4
AC BIT 0D0H.6
T1 BIT 0B0H.5
T2 BIT 090H.0
EA BIT 0A8H.7
IE DATA 0A8H
EXF2 BIT 0C8H.6
RD BIT 0B0H.7
ES BIT 0A8H.4
IP DATA 0B8H
RI BIT 098H.0
INT0 BIT 0B0H.2
CY BIT 0D0H.7
TI BIT 098H.1
INT1 BIT 0B0H.3
RCAP2H DATA 0CBH
PS BIT 0B8H.4
SP DATA 081H
T2EX BIT 090H.1
OV BIT 0D0H.2
RCAP2L DATA 0CAH
C_T2 BIT 0C8H.1
WR BIT 0B0H.6
RCLK BIT 0C8H.5
TCLK BIT 0C8H.4
SBUF DATA 099H
PCON DATA 087H
SCON DATA 098H
TMOD DATA 089H
TCON DATA 088H
IE0 BIT 088H.1
IE1 BIT 088H.3
B DATA 0F0H
CP_RL2 BIT 0C8H.0
ACC DATA 0E0H
ET0 BIT 0A8H.1
ET1 BIT 0A8H.3
TF0 BIT 088H.5
ET2 BIT 0A8H.5
TF1 BIT 088H.7
TF2 BIT 0C8H.7
RB8 BIT 098H.2
TH0 DATA 08CH
EX0 BIT 0A8H.0
IT0 BIT 088H.0
TH1 DATA 08DH
TB8 BIT 098H.3
EX1 BIT 0A8H.2
IT1 BIT 088H.2
TH2 DATA 0CDH
P BIT 0D0H.0
SM0 BIT 098H.7
TL0 DATA 08AH
SM1 BIT 098H.6
TL1 DATA 08BH
SM2 BIT 098H.5
TL2 DATA 0CCH
PT0 BIT 0B8H.1
PT1 BIT 0B8H.3
RS0 BIT 0D0H.3
PT2 BIT 0B8H.5
TR0 BIT 088H.4
RS1 BIT 0D0H.4
TR1 BIT 088H.6
TR2 BIT 0C8H.2
PX0 BIT 0B8H.0
PX1 BIT 0B8H.2
DPH DATA 083H
DPL DATA 082H
EXEN2 BIT 0C8H.3
REN BIT 098H.4
T2CON DATA 0C8H
RXD BIT 0B0H.0
TXD BIT 0B0H.1
F0 BIT 0D0H.5
PSW DATA 0D0H
?PR?_?OSTaskStkInit?OS_CPU_C SEGMENT CODE INBLOCK
?PR?_?OSStartHighRdy?OS_CPU_C SEGMENT CODE INBLOCK
?PR?_?C_OSCtxSw?OS_CPU_C SEGMENT CODE INBLOCK
?PR?_?OSIntCtxSw?OS_CPU_C SEGMENT CODE INBLOCK
?PR?OSTickISR?OS_CPU_C SEGMENT CODE INBLOCK
?PR?SerialIntr?OS_CPU_C SEGMENT CODE INBLOCK
?PR?_?OSInitHookBegin?OS_CPU_C SEGMENT CODE INBLOCK
?PR?_?OSInitHookEnd?OS_CPU_C SEGMENT CODE INBLOCK
?PR?_?OSTaskCreateHook?OS_CPU_C SEGMENT CODE INBLOCK
?PR?_?OSTaskSwHook?OS_CPU_C SEGMENT CODE INBLOCK
?PR?_?OSTaskStatHook?OS_CPU_C SEGMENT CODE INBLOCK
?PR?_?OSTCBInitHook?OS_CPU_C SEGMENT CODE INBLOCK
?PR?_?OSTimeTickHook?OS_CPU_C SEGMENT CODE INBLOCK
?PR?_?OSTaskIdleHook?OS_CPU_C SEGMENT CODE INBLOCK
?DT?OS_CPU_C SEGMENT DATA
EXTRN DATA (OSRunning)
EXTRN DATA (C_XBP)
EXTRN DATA (OSTCBCur)
EXTRN DATA (OSIntNesting)
EXTRN DATA (OSTCBHighRdy)
EXTRN CODE (_?LoadCtx)
EXTRN CODE (_?OSTimeTick)
EXTRN IDATA (STACK_START)
EXTRN DATA (OSPrioCur)
EXTRN CODE (_?OSIntExit)
EXTRN DATA (OSPrioHighRdy)
EXTRN DATA (?C_IBP)
PUBLIC SaveSP
PUBLIC SaveC_IBP
PUBLIC _?OSTaskIdleHook
PUBLIC _?OSTimeTickHook
PUBLIC _?OSTCBInitHook
PUBLIC _?OSTaskStatHook
PUBLIC _?OSTaskSwHook
PUBLIC _?OSTaskCreateHook
PUBLIC _?OSInitHookEnd
PUBLIC _?OSInitHookBegin
PUBLIC SerialIntr
PUBLIC OSTickISR
PUBLIC _?OSIntCtxSw
PUBLIC _?C_OSCtxSw
PUBLIC _?OSStartHighRdy
PUBLIC _?OSTaskStkInit
RSEG ?DT?OS_CPU_C
SaveC_IBP: DS 3
SaveSP: DS 1
; #pragma SRC
; /*
; *********************************************************************************************************
; * uC/OS-II
; * The Real-Time Kernel
; *
; * (c) Copyright 1992-1998, Jean J. Labrosse, Plantation, FL
; * All Rights Reserved
; *
; *
; * 80x86/80x88 Specific code
; * LARGE MEMORY MODEL
; *
; * File : OS_CPU_C.C
; * By : Jean J. Labrosse
; *
; * Ported date: Dec 2, 2003
; * By: Stuart Wright (swright@jiskoot.com)
; * Target platform: Keil C51 V7.07 and above
; *
; * Based on port for 8051 by John X. Liu, China, (johnxliu@163.com)
; ********************************************************************************************************
; */
;
; #define OS_CPU_GLOBALS
; #include "includes.h"
; #include "os_kcdef.h"
; /*
; *********************************************************************************************************
; * INITIALIZE A TASK'S STACK
; *
; * Description: This function is called by either OSTaskCreate() or OSTaskCreateExt() to initialize the
; * stack frame of the task being created. This function is highly processor specific.
; *
; * Arguments : task is a pointer to the task code
; *
; * pdata (vd) is a pointer to a user supplied data area that will be passed to the task
; * when the task first executes.
; *
; * ptos is a pointer to the top of stack. It is assumed that 'ptos' points to
; * a 'free' entry on the task stack. If OS_STK_GROWTH is set to 1 then
; * 'ptos' will contain the HIGHEST valid address of the stack. Similarly, if
; * OS_STK_GROWTH is set to 0, the 'ptos' will contains the LOWEST valid address
; * of the stack.
; *
; * opt specifies options that can be used to alter the behavior of OSTaskStkInit().
; * (see uCOS_II.H for OS_TASK_OPT_???).
; *
; * Returns : Always returns the location of the new top-of-stack' once the processor registers have
; * been placed on the stack in the proper order.
; *
; * Note(s) : Interrupts are enabled when your task starts executing. You can change this by setting the
; * PSW to 0x0002 instead. In this case, interrupts would be disabled upon task startup. The
; * application code would be responsible for enabling interrupts at the beginning of the task
; * code. You will need to modify OSTaskIdle() and OSTaskStat() so that they enable
; * interrupts. Failure to do this will make your system crash!
; *********************************************************************************************************
; */
;
; /* The stack variable points to the start pointer in hardware stack and is defined in OS_CPU_A */
; #if OS_STK_GROWTH==0
; #define PUSH(A) *(++stk) = ((INT8U)(A))
; #else
; #define PUSH(A) *(--stk) = ((INT8U)(A))
; #endif
; extern idata unsigned char STACK_START[1];
; //extern idata unsigned char STACK_TOP[1];
;
; OS_STK _XDATA *OSTaskStkInit (void (_CODE *task)(void _XDATA *pd) KCREENTRANT, void _XDATA * pdat, OS_STK _XDATA *ptos, INT16U opt) KCREENTRANT
RSEG ?PR?_?OSTaskStkInit?OS_CPU_C
_?OSTaskStkInit:
USING 0
; SOURCE LINE # 69
DEC ?C_IBP
DEC ?C_IBP
MOV R0,?C_IBP
MOV @R0,AR2
INC R0
MOV @R0,AR3
DEC ?C_IBP
DEC ?C_IBP
MOV R0,?C_IBP
MOV @R0,AR4
INC R0
MOV @R0,AR5
DEC ?C_IBP
DEC ?C_IBP
MOV R0,?C_IBP
MOV @R0,AR6
INC R0
MOV @R0,AR7
DEC ?C_IBP
DEC ?C_IBP
; {
; INT8U _XDATA * stk;
;
; opt+=0; //opt没被用到
; SOURCE LINE # 73
; //opt = opt; /* 'opt' is not used, prevent warning */
; pdat +=0;
; SOURCE LINE # 75
; //pdat = pdat;
; stk = (INT8U *) ptos; //用户堆栈 /* Load stack pointer
; SOURCE LINE # 77
MOV A,?C_IBP
ADD A,#06H
MOV R0,A
MOV A,@R0
MOV R6,A
INC R0
MOV A,@R0
MOV R7,A
MOV R0,?C_IBP
MOV @R0,AR6
INC R0
MOV @R0,AR7
;
; //*(void _XDATA **)stk = pdat; /* */
; //stk += sizeof(void _XDATA *); /* Save the vd to external stack */
; PUSH(task); /* The value should be loaded to PC */
; SOURCE LINE # 81
MOV R0,?C_IBP
INC R0
INC R0
MOV A,@R0
MOV R6,A
INC R0
MOV A,@R0
MOV R5,A
MOV R0,?C_IBP
INC R0
MOV A,@R0
DEC @R0
DEC R0
JNZ ?C0019
DEC @R0
?C0019:
DEC A
MOV AR2,@R0
MOV DPL,A
MOV DPH,R2
MOV A,R5
MOVX @DPTR,A
; PUSH((INT16U)task>>8); /* next time when this task is running */
; SOURCE LINE # 82
MOV A,R6
MOV R7,A
MOV R0,?C_IBP
INC R0
MOV A,@R0
DEC @R0
DEC R0
JNZ ?C0020
DEC @R0
?C0020:
DEC A
MOV AR4,@R0
MOV DPL,A
MOV DPH,R4
MOV A,R7
MOVX @DPTR,A
;
; //PUSH((INT8U )(((INT32U) task>>16)+0x7F)); /* Third byte of PC for dallas 390 */
;
; /* Following is the registers pushed into hardware stack */
; PUSH('A'); /* ACC */
; SOURCE LINE # 87
MOV R0,?C_IBP
INC R0
MOV A,@R0
DEC @R0
DEC R0
JNZ ?C0021
DEC @R0
?C0021:
DEC A
MOV AR6,@R0
MOV DPL,A
MOV DPH,R6
MOV A,#041H
MOVX @DPTR,A
; PUSH('B'); /* B */
; SOURCE LINE # 88
MOV R0,?C_IBP
INC R0
MOV A,@R0
DEC @R0
DEC R0
JNZ ?C0022
DEC @R0
?C0022:
DEC A
MOV AR6,@R0
MOV DPL,A
MOV DPH,R6
MOV A,#042H
MOVX @DPTR,A
; //*++stk = 'X'; /* DPX */
; PUSH('H'); /* DPH */
; SOURCE LINE # 90
MOV R0,?C_IBP
INC R0
MOV A,@R0
DEC @R0
DEC R0
JNZ ?C0023
DEC @R0
?C0023:
DEC A
MOV AR6,@R0
MOV DPL,A
MOV DPH,R6
MOV A,#048H
MOVX @DPTR,A
; PUSH('L'); /* DPL */
; SOURCE LINE # 91
MOV R0,?C_IBP
INC R0
MOV A,@R0
DEC @R0
DEC R0
JNZ ?C0024
DEC @R0
?C0024:
DEC A
MOV AR6,@R0
MOV DPL,A
MOV DPH,R6
MOV A,#04CH
MOVX @DPTR,A
; // *++stk = 'X'; /* DPX1 for second DPTR */
; // *++stk = 'H'; /* DPH1 for second DPTR */
; // *++stk = 'L'; /* DPL1 for second DPTR */
; // *++stk = DPS; /* DPS for second DPTR */
; PUSH(PSW); /* PSW */
; SOURCE LINE # 96
MOV R0,?C_IBP
INC R0
MOV A,@R0
DEC @R0
DEC R0
JNZ ?C0025
DEC @R0
?C0025:
DEC A
MOV AR6,@R0
MOV DPL,A
MOV DPH,R6
MOV A,PSW
MOVX @DPTR,A
;
; PUSH(0); /* R0 */
; SOURCE LINE # 98
MOV R0,?C_IBP
INC R0
MOV A,@R0
DEC @R0
DEC R0
JNZ ?C0026
DEC @R0
?C0026:
DEC A
MOV AR6,@R0
MOV DPL,A
MOV DPH,R6
CLR A
MOVX @DPTR,A
;
; PUSH(1); // should be R1
; SOURCE LINE # 100
MOV R0,?C_IBP
INC R0
MOV A,@R0
DEC @R0
DEC R0
JNZ ?C0027
DEC @R0
?C0027:
DEC A
MOV AR6,@R0
MOV DPL,A
MOV DPH,R6
MOV A,#01H
MOVX @DPTR,A
; PUSH(2); // should be R2
; SOURCE LINE # 101
MOV R0,?C_IBP
INC R0
MOV A,@R0
DEC @R0
DEC R0
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