# Convert ascii string of binary digits to integer # # $a0 - input, pointer to null-terminated string of 1's and 0's # $v0 - output, integer form of binary string # $t0 - ascii value of the char pointed to # $t1 - integer value (0 or 1) of the char pointed to .globl binary_convert binary_convert: li $v0, 0 # Reset accumulator to 0. loop: lb $t0, 0($a0) # Load a character, beq $t0, $zero, end # if it is null then return. sll $v0, $v0, 1 # Otherwise shift accumulator left, addi $t1, $t0, -48 # calculate the value of the character, or $v0, $v0, $t1 # and add that to the accumulator. addi $a0, $a0, 1 # Finally, increment the pointer j loop # and loop. end: jr $ra
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