diff options
Diffstat (limited to 'arch/arm/lib/div64.S')
| -rw-r--r-- | arch/arm/lib/div64.S | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/arm/lib/div64.S b/arch/arm/lib/div64.S index faa7748142da..d02268ac7baf 100644 --- a/arch/arm/lib/div64.S +++ b/arch/arm/lib/div64.S @@ -84,8 +84,10 @@ ENTRY(__do_div64) @ The division loop for needed upper bit positions. @ Break out early if dividend reaches 0. 2: cmp xh, yl + itt cs orrcs yh, yh, ip subcss xh, xh, yl + it ne movnes ip, ip, lsr #1 mov yl, yl, lsr #1 bne 2b @@ -93,7 +95,9 @@ ENTRY(__do_div64) @ See if we need to handle lower 32-bit result. 3: cmp xh, #0 mov yl, #0 + it eq cmpeq xl, r4 + itt lo movlo xh, xl movlo pc, lr @@ -104,7 +108,9 @@ ENTRY(__do_div64) 4: movs xl, xl, lsl #1 adcs xh, xh, xh beq 6f + it cc cmpcc xh, r4 + itt cs 5: orrcs yl, yl, ip subcs xh, xh, r4 movs ip, ip, lsr #1 @@ -116,6 +122,7 @@ ENTRY(__do_div64) @ Otherwise, if lower part is also null then we are done. 6: bcs 5b cmp xl, #0 + it eq moveq pc, lr @ We still have remainer bits in the low part. Bring them up. @@ -185,7 +192,8 @@ ENTRY(__do_div64) mov pc, lr @ eq -> division by 1: obvious enough... -9: moveq yl, xl +9: itttt eq + moveq yl, xl moveq yh, xh moveq xh, #0 moveq pc, lr |