vectors.asm

Ti 6416 环境下UART模块的操作范例

********************************************************************************
*           Copyright (C) 2000 Texas Instruments Incorporated.
*                           All Rights Reserved
*------------------------------------------------------------------------------
* FILENAME...... vecs.asm
* DATE CREATED.. 12/06/2000
* LAST MODIFIED. 12/06/2000
********************************************************************************

*------------------------------------------------------------------------------
* Global symbols defined here and exported out of this file
*------------------------------------------------------------------------------

				.global _vectors
				.global _c_int00
				.global _vector1
				.global _vector2
				.global _vector3
				.global _uarta_int
				.global _vector5
				.global _vector6
				.global _vector7
				.global _vector8		; Hookup the c_int08 ISR in main() for EDMA
				.global _vector9	; Hookup the c_int09 ISR in main() for DMA
				.global _vector10 
				.global _vector11	; Hookup the c_int11 ISR in main() for DMA
				.global _vector12
				.global _vector13
				.global _vector14
				.global _vector15
				.global _vec_dummy

*------------------------------------------------------------------------------
* Global symbols referenced in this file but defined somewhere else. 
* Remember that your interrupt service routines need to be referenced here.
*------------------------------------------------------------------------------
   .ref _c_int00

*------------------------------------------------------------------------------
* This is a macro that instantiates one entry in the interrupt service table.
*------------------------------------------------------------------------------
VEC_ENTRY		.macro	addr
				STW		B0,*--B15
				MVKL	addr,B0
				MVKH	addr,B0
				B		B0
				LDW		*B15++,B0
				NOP		2
				NOP   
				NOP   
				.endm


*------------------------------------------------------------------------------
* This is a dummy interrupt service routine used to initialize the IST.
*------------------------------------------------------------------------------
				.sect	".text:isr"
_vec_dummy:
				B    B3
				NOP  5

*------------------------------------------------------------------------------
* This is the actual interrupt service table (IST). It is properly aligned and
* is located in the subsection .text:vecs. This means if you don't explicitly
* specify this section in your linker command file, it will default and link
* into the .text section. Remember to set the ISTP register to point to this
* table.
*------------------------------------------------------------------------------
				.sect	".vector"
				.align	1024

_vectors:		
_vector0:		VEC_ENTRY	_c_int00
_vector1:		VEC_ENTRY	_vec_dummy
_vector2:		VEC_ENTRY	_vec_dummy
_vector3:		VEC_ENTRY	_vec_dummy
_vector4:		VEC_ENTRY	_uarta_int
_vector5:		VEC_ENTRY	_vec_dummy
_vector6:		VEC_ENTRY	_vec_dummy
_vector7:		VEC_ENTRY	_vec_dummy
_vector8:		VEC_ENTRY	_vec_dummy		; Hookup the c_int08 ISR in main() for EDMA
_vector9:		VEC_ENTRY	_vec_dummy	; Hookup the c_int09 ISR in main() for DMA
_vector10:		VEC_ENTRY	_vec_dummy
_vector11:		VEC_ENTRY	_vec_dummy	; Hookup the c_int11 ISR in main() for DMA
_vector12:		VEC_ENTRY	_vec_dummy
_vector13:		VEC_ENTRY	_vec_dummy
_vector14:		VEC_ENTRY	_vec_dummy
_vector15:		VEC_ENTRY	_vec_dummy

*------------------------------------------------------------------------------


********************************************************************************
* End of vecs.asm
********************************************************************************