mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-08-20 01:58:32 -04:00
Add FreeRTOS-Plus directory.
This commit is contained in:
Richard Barry
parent
7bd5f21ad5
commit
f508a5f653
6798 changed files with 134949 additions and 19 deletions
228
FreeRTOS/Demo/ARM9_STR91X_IAR/91x_vect.s
Normal file
228
FreeRTOS/Demo/ARM9_STR91X_IAR/91x_vect.s
Normal file
|
|
@ -0,0 +1,228 @@
|
|||
;******************** (C) COPYRIGHT 2006 STMicroelectronics ********************
|
||||
;* File Name : 91x_vect.s
|
||||
;* Author : MCD Application Team
|
||||
;* Date First Issued : 05/18/2006 : Version 1.0
|
||||
;* Description : This File used to initialize the exception and IRQ
|
||||
;* vectors, and to enter/return to/from exceptions
|
||||
;* handlers.
|
||||
;*******************************************************************************
|
||||
* History:
|
||||
* 05/22/2007 : Version 1.2
|
||||
* 05/24/2006 : Version 1.1
|
||||
* 05/18/2006 : Version 1.0
|
||||
;*******************************************************************************
|
||||
; THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH
|
||||
; CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS
|
||||
; A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT
|
||||
; OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
|
||||
; OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION
|
||||
; CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
|
||||
;******************************************************************************/
|
||||
|
||||
#include "FreeRTOSConfig.h"
|
||||
#include "ISR_Support.h"
|
||||
|
||||
SECTION .intvec:CODE:ROOT(2)
|
||||
CODE32
|
||||
|
||||
|
||||
VectorAddress EQU 0xFFFFF030 ; VIC Vector address register address.
|
||||
VectorAddressDaisy EQU 0xFC000030 ; Daisy VIC Vector address register
|
||||
I_Bit EQU 0x80 ; when I bit is set, IRQ is disabled
|
||||
F_Bit EQU 0x40 ; when F bit is set, FIQ is disabled
|
||||
|
||||
|
||||
|
||||
|
||||
;*******************************************************************************
|
||||
; Import the __iar_program_start address from 91x_init.s
|
||||
;*******************************************************************************
|
||||
|
||||
IMPORT __iar_program_start
|
||||
|
||||
;*******************************************************************************
|
||||
; Import exception handlers
|
||||
;*******************************************************************************
|
||||
|
||||
IMPORT Undefined_Handler
|
||||
IMPORT vPortYieldProcessor ; FreeRTOS SWI handler
|
||||
IMPORT Prefetch_Handler
|
||||
IMPORT Abort_Handler
|
||||
IMPORT FIQ_Handler
|
||||
|
||||
|
||||
;*******************************************************************************
|
||||
; Export Peripherals IRQ handlers table address
|
||||
;*******************************************************************************
|
||||
|
||||
;*******************************************************************************
|
||||
; Exception vectors
|
||||
;*******************************************************************************
|
||||
|
||||
LDR PC, Reset_Addr
|
||||
LDR PC, Undefined_Addr
|
||||
LDR PC, SWI_Addr
|
||||
LDR PC, Prefetch_Addr
|
||||
LDR PC, Abort_Addr
|
||||
NOP ; Reserved vector
|
||||
LDR PC, IRQ_Addr
|
||||
|
||||
;*******************************************************************************
|
||||
;* Function Name : FIQHandler
|
||||
;* Description : This function is called when FIQ exception is entered.
|
||||
;* Input : none
|
||||
;* Output : none
|
||||
;*******************************************************************************
|
||||
FIQHandler
|
||||
SUB lr,lr,#4 ; Update the link register.
|
||||
STMFD sp!,{r0-r7,lr} ; Save The workspace plus the current return
|
||||
; address lr_fiq into the FIQ stack.
|
||||
ldr r0,=FIQ_Handler
|
||||
ldr lr,=FIQ_Handler_end
|
||||
bx r0 ;Branch to FIQ_Handler.
|
||||
FIQ_Handler_end:
|
||||
|
||||
LDMFD sp!,{r0-r7,pc}^; Return to the instruction following...
|
||||
; ...the exception interrupt.
|
||||
|
||||
|
||||
;*******************************************************************************
|
||||
; Exception handlers address table
|
||||
;*******************************************************************************
|
||||
|
||||
Reset_Addr DCD __iar_program_start
|
||||
Undefined_Addr DCD UndefinedHandler
|
||||
SWI_Addr DCD vPortYieldProcessor
|
||||
Prefetch_Addr DCD PrefetchAbortHandler
|
||||
Abort_Addr DCD DataAbortHandler
|
||||
DCD 0 ; Reserved vector
|
||||
IRQ_Addr DCD IRQHandler
|
||||
|
||||
|
||||
;*******************************************************************************
|
||||
; MACRO
|
||||
;*******************************************************************************
|
||||
;*******************************************************************************
|
||||
;* Macro Name : SaveContext
|
||||
;* Description : This macro is used to save the context before entering
|
||||
; an exception handler.
|
||||
;* Input : The range of registers to store.
|
||||
;* Output : none
|
||||
;*******************************************************************************
|
||||
|
||||
SaveContext MACRO reg1,reg2
|
||||
STMFD sp!,{reg1-reg2,lr} ; Save The workspace plus the current return
|
||||
; address lr_ mode into the stack.
|
||||
MRS r1,spsr ; Save the spsr_mode into r1.
|
||||
STMFD sp!,{r1} ; Save spsr.
|
||||
ENDM
|
||||
|
||||
;*******************************************************************************
|
||||
;* Macro Name : RestoreContext
|
||||
;* Description : This macro is used to restore the context to return from
|
||||
; an exception handler and continue the program execution.
|
||||
;* Input : The range of registers to restore.
|
||||
;* Output : none
|
||||
;*******************************************************************************
|
||||
|
||||
RestoreContext MACRO reg1,reg2
|
||||
LDMFD sp!,{r1} ; Restore the saved spsr_mode into r1.
|
||||
MSR spsr_cxsf,r1 ; Restore spsr_mode.
|
||||
LDMFD sp!,{reg1-reg2,pc}^; Return to the instruction following...
|
||||
; ...the exception interrupt.
|
||||
ENDM
|
||||
|
||||
|
||||
;*******************************************************************************
|
||||
; Exception Handlers
|
||||
;*******************************************************************************
|
||||
|
||||
|
||||
;*******************************************************************************
|
||||
;* Function Name : UndefinedHandler
|
||||
;* Description : This function is called when undefined instruction
|
||||
; exception is entered.
|
||||
;* Input : none
|
||||
;* Output : none
|
||||
;*******************************************************************************
|
||||
|
||||
UndefinedHandler
|
||||
SaveContext r0,r12 ; Save the workspace plus the current
|
||||
; return address lr_ und and spsr_und.
|
||||
|
||||
ldr r0,=Undefined_Handler
|
||||
ldr lr,=Undefined_Handler_end
|
||||
bx r0 ; Branch to Undefined_Handler.
|
||||
|
||||
Undefined_Handler_end:
|
||||
RestoreContext r0,r12 ; Return to the instruction following...
|
||||
; ...the undefined instruction.
|
||||
|
||||
;*******************************************************************************
|
||||
;* Function Name : PrefetchAbortHandler
|
||||
;* Description : This function is called when Prefetch Abort
|
||||
; exception is entered.
|
||||
;* Input : none
|
||||
;* Output : none
|
||||
;*******************************************************************************
|
||||
|
||||
PrefetchAbortHandler
|
||||
SUB lr,lr,#4 ; Update the link register.
|
||||
SaveContext r0,r12 ; Save the workspace plus the current
|
||||
; return address lr_abt and spsr_abt.
|
||||
|
||||
ldr r0,=Prefetch_Handler
|
||||
ldr lr,=Prefetch_Handler_end
|
||||
bx r0 ; Branch to Prefetch_Handler.
|
||||
|
||||
Prefetch_Handler_end:
|
||||
RestoreContext r0,r12 ; Return to the instruction following that...
|
||||
; ...has generated the prefetch abort exception.
|
||||
|
||||
;*******************************************************************************
|
||||
;* Function Name : DataAbortHandler
|
||||
;* Description : This function is called when Data Abort
|
||||
; exception is entered.
|
||||
;* Input : none
|
||||
;* Output : none
|
||||
;*******************************************************************************
|
||||
|
||||
DataAbortHandler
|
||||
SUB lr,lr,#8 ; Update the link register.
|
||||
SaveContext r0,r12 ; Save the workspace plus the current
|
||||
; return address lr_ abt and spsr_abt.
|
||||
ldr r0,=Abort_Handler
|
||||
ldr lr,=Abort_Handler_end
|
||||
bx r0 ; Branch to Abort_Handler.
|
||||
|
||||
Abort_Handler_end:
|
||||
|
||||
RestoreContext r0,r12 ; Return to the instruction following that...
|
||||
; ...has generated the data abort exception.
|
||||
;*******************************************************************************
|
||||
;* Function Name : IRQHandler
|
||||
;* Description : This function is called when IRQ exception is entered.
|
||||
;* Input : none
|
||||
;* Output : none
|
||||
;*******************************************************************************
|
||||
|
||||
IRQHandler
|
||||
portSAVE_CONTEXT ; Save the context of the current task.
|
||||
|
||||
LDR r0, = VectorAddress
|
||||
LDR r0, [r0] ; Read the routine address
|
||||
LDR r1, = VectorAddressDaisy
|
||||
LDR r1, [r1]
|
||||
MOV lr, pc
|
||||
bx r0
|
||||
LDR r0, = VectorAddress ; Write to the VectorAddress to clear the
|
||||
STR r0, [r0] ; respective interrupt in the internal interrupt
|
||||
LDR r1, = VectorAddressDaisy ; Write to the VectorAddressDaisy to clear the
|
||||
STR r1,[r1] ; respective interrupt in the internal interrupt
|
||||
|
||||
portRESTORE_CONTEXT ; Restore the context of the selected task.
|
||||
|
||||
LTORG
|
||||
|
||||
END
|
||||
;******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****
|
||||
Loading…
Add table
Add a link
Reference in a new issue