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Language Assembler (PowerPC)
| Date: | 08/25/05 |
| Author: | Berthold Stöger |
| URL: | n/a |
| Comments: | 1 |
| Info: | n/a |
| Score: |  (3.37 in 140 votes) |
# 99 bottles of beer in PowerPC-Assembler on Linux
# Compile with "gcc -nostdlib -s bottle.s"
# Tested with gcc version 3.3.5 on Linux 2.6.12 for PPC
.section .rodata
.align 1
.byte "0No more bottles of beer on the wall, no more bottles of beer."
.byte '\n'
.byte "Go to the store and buy some more, 99 bottles of beer on the wall."
.byte '\n'
.byte "0Take one down and pass it around, | bottle{ of beer on the wall."
.byte '\n','\n'
.byte "0| bottle{ of beer on the wall, | bottle{ of beer."
.byte '\n'
.s1:
.byte "0no more"
.nomore:
.section .text
.align 2
.globl _start
_start:
mr 15,1 # r15 = stack base
subi 1,1,200 # make place for string
li 16,99 # r16 = counter
.l3:
lis 2,.s1@ha
la 2,.s1@l(2)
bl .print
subi 16,16,1
bl .print
cmpwi 0,16,0
bne .l3
bl .print
li 0,1 # SYS_exit
li 3,0 # returncode = 0
sc # syscall
.print:
mr 4,15
.l1:
lbzu 3,-1(2)
cmpwi 0,3,'0'
beq .l1_exit
cmpwi 0,3,'{'
blt .l1_char
bgt .l1_count
cmpwi 0,16,1
beq .l1
li 3,'s'
stbu 3,-1(4)
b .l1
.l1_count:
cmpwi 0,16,0
bgt .l1_pos
lis 5,.nomore@ha
la 5,.nomore@l(5)
.l2:
lbzu 3,-1(5)
cmpwi 0,3,'0'
beq .l1
stbu 3,-1(4)
b .l2
.l1_pos:
li 6,10
divw 3,16,6 # Urgh. PPC doesn't supply
mullw 6,3,6 # the remainder of divisions...
sub 5,16,6
addi 5,5,'0'
stbu 5,-1(4)
cmpwi 0,3,0
ble .l1
addi 3,3,'0'
stbu 3,-1(4)
b .l1
.l1_char:
stbu 3,-1(4)
b .l1
.l1_exit:
li 0,4 # SYS_write
li 3,1 # fd = stdout
sub 5,15,4 # len
sc # syscall
blr
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Comments
over the "much more efficient" version. Am I being retardeD?