.file	"cpSobel.s"
	.ctext



#
# cpXbar function:
#   -cpXbar function reads AEG 4, which indicates whether 
#    the memory crossbar is enabled in the AE
#

	.globl	cpXbar
	.type	cpXbar. @function
	.signature	pdk=4

cpXbar:
	mov %aeg, $4, %a8		# integer values returned in a8
	rtn 




#
# cpSobel function:
#   -writes array pointers (image data) and column/row sizes to AEG registers 
# 	-calls caep00 to execute the sobel operation
#

	.globl	cpSobel
	.type	cpSobel. @function
	.signature	pdk=4

cpSobel:
	mov %a8, $0, %aeg		# a8 contains address of original image data
	mov %a9, $1, %aeg		# a9 contains address of edge image data
	mov %a10, $2, %aeg		# a10 contains number of rows
	mov %a11, $3, %aeg		# a11 contains number of columns

	caep00 $0               # make the coprocessor call

	rtn 



	.cend