[toolchain]: add avr32 support to gcc 4.3.5

[openwrt.git] / toolchain / gcc / patches / 4.3.5 / 946-avr32_fix_32bit_div_2.patch

diff --git a/toolchain/gcc/patches/4.3.5/946-avr32_fix_32bit_div_2.patch b/toolchain/gcc/patches/4.3.5/946-avr32_fix_32bit_div_2.patch
new file mode 100644 (file)
index 0000000..4170219
--- /dev/null
+++ b/toolchain/gcc/patches/4.3.5/946-avr32_fix_32bit_div_2.patch
@@ -0,0 +1,27 @@
+--- 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