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# Calculate a^b. Where: a0=a, a1=b
#
# Also, this is a good example of how numeric labels can be used
#
# Label 1: can be defined and redefined everywhere, and we can use
# a suffix when referencing it, to specify if we want to reference
# the previous or the next definition of the label, according to the
# current position. 'b' for before 'f' for after.
#
# Ex:
#
# beqz a1, 1f # refers to the symbol 1 defined after this instruction
#
.globl _start
.section .text
pow:
mv a2, a0
li a0, 1
1:
beqz a1, 1f
mul a0, a0, a2
addi a1, a1, -1
j 1b
1:
ret
_start:
li a0, 2
li a1, 3
jal pow
# Setup exit ecall
# Return value is already in a0
li a7, 93
ecall
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