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print_matrix_loop.s
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.data
format_msg: .asciiz "Hello %s\n"
matrixA: .word32 1,2,3,4
matrix: .space 32
my_msg: .asciiz "Hello people!!!"
params_format: .space 8
params_sys5: .space 8
.code
main: ADD $s0, $zero, $zero ; index i
ADDI $s2, $zero, 0x4
startWhile: MULT $s0, $s2
MFLO $t1
LB $s1, matrixA($t1)
JAL conv_for_ascii
JAL func_add_wd
JAL verify_is_full
XOR $v0, $v0,$v0
XOR $v1, $v1,$v1
ADDI $v0, $zero, 0x20
ADDI $v1, $zero, 0x8
JAL func_add_wd
JAL verify_is_full
SLTI $t0, $s0, 0x3
ADDI $s0, $s0, 0x1
BNEZ $t0,startWhile
JAL func_add_wd
JAL move_restante
daddi $a3, $zero, matrix
sw $a3, params_sys5($zero)
daddi $t6, $zero, params_sys5
syscall 5
syscall 0
move_restante: SD $s6, matrix($s5)
XOR $s6,$s6,$s6
XOR $s7,$s7,$s7
JALR $ra
; guarda em $s5 o index do vetor de caracteres
verify_is_full: SLTI $t0, $s7, 0x40
BNEZ $t0, end_the_func
SD $s6, matrix($s5)
ADDI $s5, $s5, 0x8
XOR $s6,$s6,$s6
XOR $s7,$s7,$s7
end_the_func: JALR $ra
; A funcao usa o registrador $s7 para manter o tamanho da palavra e $s6 para a palavra
; E pega o valor de $v0 e $v1
func_add_wd: ADDI $t0, $zero, 0x40 ; maximo de uma palavra
DSUB $t1, $t0, $s7
SLT $t2, $v1, $t1
BEQZ $t2, nao_tem_spaco
DSLLV $v0, $v0, $s7
DADD $s6, $s6, $v0
DADD $s7, $s7, $v1
JALR $ra
nao_tem_spaco: DSUB $t3, $v1, $t1
DADD $t4, $zero, $v0
DSLLV $t4, $v0, $s7
DADD $s6, $s6, $t4
DADD $v1, $zero, $t3
DSRLV $v0, $v0, $t1
DADD $s7, $zero, $t0
JALR $ra
; convert o que estar em $s1 para codigo asciiz
conv_for_ascii: ADDI $t0, $zero, 0xa
DADDI $v1, $zero, 0x0
DADD $v0, $zero, $zero
ANDI $a1, $s1, 0x80
ADDI $t7, $zero, 0x0 ; numero positivo
BEQZ $a1, eh_positivo
ADDI $a1, $zero, -1
MULT $s1, $a1
MFLO $s1
ADDI $t7, $zero, 0x1 ; numero negativo
eh_positivo: DSLL $v0, $v0, 0x8
DADDI $v1, $v1, 0x8
DIV $s1, $t0
MFHI $a2
DADDI $a2, $a2, 0x30
DADD $v0, $v0, $a2
MFLO $s1
BNEZ $s1, eh_positivo
BEQZ $t7, final_func
DSLL $v0, $v0, 0x8
DADDI $v1, $v1, 0x8
DADDI $v0, $v0, 0x2d
final_func: JALR $ra