Tom's Life Bits

For the UC3A0512, read the pin value register and then write to the output value register.

    // Set the output value of PORT0 \\
   AVR32_GPIO.port[ 0 ].ovrs = value ; \\

   //Clear the output value of PORT0 \\
   AVR32_GPIO.port[ 0 ].ovrc = value ;\\

   //Read the port pins \\
   value = AVR32_GPIO.port[ 0 ].pvr ; \\

You can also use the .ovr function:

Example PORT0 has the value 0xAAFF55FF

   AVR32_GPOI.port[0].ovr = 0x55AAFFBB;\\

then all the bits will change, because if you use the ovrs or ovrc you can only change set or clear.