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- # mach: all
- # output:
- # sim: --environment operating
- .include "t-macros.i"
- start
- ;; The d10v implements negated addition for subtraction
- .macro check_sub2w s x y r c v
- ;; clear carry
- ldi r6,#0x8004
- mvtc r6,cr0
- ;; load opnds
- ld2w r6, @(1f,r0)
- ld2w r8, @(2f,r0)
- .data
- 1: .long \x
- 2: .long \y
- .text
- ;; subtract
- SUB2W r6, r8
- ;; verify result
- ld2w r10, @(1f,r0)
- .data
- 1: .long \r
- .text
- cmpeq r6, r10
- brf0f 2f
- cmpeq r7, r11
- brf0t 3f
- 2: ldi r4, 1
- ldi r0, \s
- trap 15
- 3:
- ;; verify carry
- mvfc r6, cr0
- and3 r6, r6, #1
- cmpeqi r6, #\c
- brf0t 1f
- ldi r4, 1
- ldi r0, \s
- trap 15
- 1:
- .endm
- check_sub2w 1 0x00000000 0x00000000 0x00000000 1 0
- check_sub2w 2 0x00000000 0x00000001 0xffffffff 0 0
- check_sub2w 3 0x00000001 0x00000000 0x00000001 1 0
- check_sub2w 3 0x00000001 0x00000001 0x00000000 1 0
- check_sub2w 5 0x00000000 0x80000000 0x80000000 0 1
- check_sub2w 6 0x80000000 0x00000001 0x7fffffff 1 1
- check_sub2w 7 0x7fffffff 0x7fffffff 0x00000000 1 0
- exit0
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