openwrt/toolchain/gcc/patches/4.3.5/946-avr32_fix_32bit_div_2.p...

28 lines
853 B
Diff

--- a/gcc/config/avr32/lib1funcs.S
+++ b/gcc/config/avr32/lib1funcs.S
@@ -2271,7 +2271,7 @@ __avr32_f32_div:
tst r12, r12
moveq r9, 0
- breq 12
+ breq 12f
/* Unpack op1*/
/* exp: r9 */
@@ -2467,9 +2467,14 @@ __divsf_return_op1:
reteq 0 /* Return zero if number/inf*/
ret -1 /* Return NaN*/
4:
- /* Op2 is zero ? */
+ /* Op1 is zero ? */
tst r12,r12
reteq -1 /* 0.0/0.0 is NaN */
+ /* Op1 is Nan? */
+ lsr r9, r12, 24
+ breq 11f /*If number is subnormal*/
+ cp r9, 0xff
+ brhs 2b /* Check op1 for NaN or Inf */
/* Nonzero/0.0 is Inf. Sign bit will be shifted in before returning*/
mov_imm r12, 0xff000000
rjmp __divsf_return_op1