diff options
Diffstat (limited to 'toolchain/gcc/patches/4.3.5/942-avr32_fix_32bit_div.patch')
| -rw-r--r-- | toolchain/gcc/patches/4.3.5/942-avr32_fix_32bit_div.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/toolchain/gcc/patches/4.3.5/942-avr32_fix_32bit_div.patch b/toolchain/gcc/patches/4.3.5/942-avr32_fix_32bit_div.patch new file mode 100644 index 000000000..af66a6d50 --- /dev/null +++ b/toolchain/gcc/patches/4.3.5/942-avr32_fix_32bit_div.patch @@ -0,0 +1,34 @@ +--- a/gcc/config/avr32/lib1funcs.S ++++ b/gcc/config/avr32/lib1funcs.S +@@ -2257,10 +2257,13 @@ __avr32_f32_div: + + /* Unpack */ + lsl r12,1 +- reteq 0 /* Return zero if op1 is zero */ + lsl r11,1 + breq 4f /* Check op2 for zero */ +- ++ ++ tst r12, r12 ++ moveq r9, 0 ++ breq 12 ++ + /* Unpack op1*/ + /* exp: r9 */ + /* sf: r12 */ +@@ -2279,9 +2282,14 @@ __avr32_f32_div: + breq 13f /*If number is subnormal*/ + cp r10, 0xff + brhs 3f /* Check op2 for NaN or Inf */ +- + lsl r11,7 + sbr r11, 31 /*Implicit bit*/ ++ ++ cp.w r9, 0 ++ subfeq r12, 0 ++ reteq 0 /* op1 is zero and op2 is not zero */ ++ /* or NaN so return zero */ ++ + 14: + + /* For UC3, store with predecrement is faster than stm */ |