bat/tests/syntax-tests/source/ARM Assembly/test.S
2020-10-05 07:12:24 +02:00

56 lines
853 B
ArmAsm
Vendored

.data
.balign 4
red: .word 0
green: .word 0
blue: .word 0
.text
.global grayscale
.func grayscale
grayscale:
assign:
/* some comment */
ldr ip, addr_red
str r3, [ip]
ldr ip, addr_green
ldmfd r13!, {r3}
str r3, [ip]
ldr ip, addr_blue
ldmfd r13!, {r3}
str r3, [ip]
stmfd r13!, {r4-r8}
ldr ip, addr_red
ldr r3, [ip]
ldr ip, addr_green
ldr r4, [ip]
ldr ip, addr_blue
ldr r5, [ip] /* another comment */
grayscale_loop:
ldrb r6, [r1]
mul r6, r3, r6
add r1, r1, #1
ldrb r7, [r1]
mul r7, r4, r7
add r1, r1, #1
ldrb r8, [r1]
mul r8, r5, r8
add r1, r1, #1
add r6, r6, r7
add r6, r6, r8
asr r6, r6, #8
str r6, [r2]
add r2, r2, #1
sub r0, r0, #1
cmp r0, #0
bne grayscale_loop
ldmfd r13!, {r4-r8}
stmfd r13!, {r0-r1}
bx lr
addr_red: .word red
addr_green: .word green
addr_blue: .word blue