clear_bss:
la $r0, __bss_start /* r0 <- rel __bss_start in FLASH */
add $r0, $r0, $r9 /* r0 <- rel __bss_start in FLASH */
- la $r1, __bss_end__ /* r1 <- rel __bss_end in RAM */
+ la $r1, __bss_end /* r1 <- rel __bss_end in RAM */
add $r1, $r1, $r9 /* r0 <- rel __bss_end in RAM */
li $r2, 0x00000000 /* clear */