ARMS汇编程序语言，TST /打印2个输出

Question

我是ARM汇编代码的新手，我很难修改此代码以获取TST的结果并打印奇数和偶数输出。安全地在一个帖子中要求回答问题。

R3的结果最终为ffffff，使我的打印没有输出。

    .text           @ Direvtive 
    .global _start  @ declare global begining
     _start:
         LDR R1,=idx    @ content of idx is length of Vec and now R1 is a counter. 
         LDR R1,[R1]    @ R1 is now the length of Vec. read inderectly 
         LDR R2,=Vec    @ R2 is the address of first element of vector 
         MOV R0,#0      @ temp register
    MOV R4, #0   @ R4 is the summation of odd numbers
    MOV R5, #0   @ R5 is the summation of even numbers

   LOOP: 
    LDR R3,[R2]    @ R3 = Vec[i]
    @idea instead of cond: AND r0, r3, #1 (then even = total-odd)
    TST r3, #1
    addeq r5,r5,R3
    addne r4,r4,R3

         ADD R2,R2,#4   @ R2 pointing to the next element of vector  
         SUBS R1,R1,#1  @ counter
         @CMP R1, #0
         BNE LOOP       @ loop until R1=0
     BL ODD_PRINT
     BL EVEN_PRINT

ODD_PRINT:
     STR R0,[R4]
     MOV R4, R0
     MOV R4, #1

EVEN_PRINT:
    STR R1,[R5]
    MOV R5, R1
    MOV R5, #1

         SWI 0x6b       @ Printing the contant of R4 (AND R5?)
         SWI 0x11       @ halt
         .data          @ Directive for begining of data part 
         .align         @ Directive for alagnment of memory addresses 
    idx: .word 16       @ Total number of elements of vector 
    Vec: .word -7,3,5,1  @ vector initiation 
         .word -3,5,-18,-10
         .word 2,-1,0,6
         .word -10,-9,8,2
         .end