Compiler

maybe the compiler bug for the following test code:# test.S# define ALT_CPU_FREQ 90000000# define BAUD_RATE 2400 //1200# define C_DIVISOR ((ALT_CPU_FREQ+BAUD_RATE/2)/BAUD_RATE)

.equ A_DIVISOR , ((ALT_CPU_FREQ+BAUD_RATE/2)/BAUD_RATE)

.macro MOVUIK32 _reg,_val

.if (\_val >>16) == 0

MOVUI \_reg,%lo(\_val)

.elseif (\_val <<16) == 0

MOVHI \_reg,%hi(\_val)

.else

MOVIA \_reg,\_val

.endif

.endm

.section .text

.align 2

.set noat

_start:

MOVUIK32 r2,C_DIVISOR

MOVUIK32 r3,A_DIVISOR

.end

You may change the valu of ALT_CPU_FREQ and BAUD_RATE macros, and then check the compiling result!