OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [sim/] [testsuite/] [d10v-elf/] [t-sub.s] - Rev 856

Go to most recent revision | Compare with Previous | Blame | View Log

.include "t-macros.i"
 
	start
 
;;  The d10v implements negated addition for subtraction
 
	.macro check_sub s x y r c
	;; clear carry
	ldi	r6,#0x8004
	mvtc	r6,cr0
	;; subtract
	ldi	r10,#\x
	ldi	r11,#\y
	sub	r10, r11
	;; verify result
	ldi	r12, #\r
	cmpeq	r10, r12
	brf0t	1f
	ldi	r6, 1
	ldi	r2, #\s
	trap	15
1:
	;; verify carry
	mvfc	r6, cr0
	and3	r6, r6, #1
	cmpeqi	r6, #\c
	brf0t	1f
	ldi	r6, 1
	ldi	r2, #\s
	trap	15
1:
	.endm
 
check_sub 1 0x0000 0x0000  0x0000  1
check_sub 2 0x0000 0x0001  0xffff  0
check_sub 3 0x0001 0x0000  0x0001  1
check_sub 4 0x0001 0x0001  0x0000  1
check_sub 5 0x0000 0x8000  0x8000  0
check_sub 6 0x8000 0x0001  0x7fff  1
check_sub 7 0x7fff 0x7fff  0x0000  1
 
	exit0
 

Go to most recent revision | Compare with Previous | Blame | View Log

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.