mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-28 05:51:04 +00:00
88 lines
916 B
ArmAsm
88 lines
916 B
ArmAsm
.arch armv7-a
|
|
.global _start
|
|
.syntax unified
|
|
.text
|
|
.thumb
|
|
|
|
.macro do_calls
|
|
@ The following four instructions are accepted by gas, but generate
|
|
@ meaningless code.
|
|
@bl.w arm0
|
|
@bl.w arm4
|
|
@nop
|
|
@bl.w arm0
|
|
@bl.w arm4
|
|
@nop
|
|
blx.w arm0
|
|
blx.w arm4
|
|
nop
|
|
blx.w arm0
|
|
blx.w arm4
|
|
nop
|
|
bl.w thumb0
|
|
bl.w thumb2
|
|
bl.w thumb4
|
|
bl.w thumb6
|
|
nop
|
|
bl.w thumb0
|
|
bl.w thumb2
|
|
bl.w thumb4
|
|
bl.w thumb6
|
|
nop
|
|
@ These eight are all accepted by gas, but generate bad code.
|
|
@blx.w thumb0
|
|
@blx.w thumb2
|
|
@blx.w thumb4
|
|
@blx.w thumb6
|
|
@nop
|
|
@blx.w thumb0
|
|
@blx.w thumb2
|
|
@blx.w thumb4
|
|
@blx.w thumb6
|
|
.endm
|
|
|
|
.thumb_func
|
|
.align 3
|
|
_start:
|
|
do_calls
|
|
|
|
.arm
|
|
.align 3
|
|
arm0:
|
|
bx lr
|
|
|
|
.align 3
|
|
nop
|
|
arm4:
|
|
bx lr
|
|
|
|
.thumb
|
|
.thumb_func
|
|
.align 3
|
|
thumb0:
|
|
bx lr
|
|
|
|
.thumb_func
|
|
.align 3
|
|
nop
|
|
thumb2:
|
|
bx lr
|
|
|
|
.thumb_func
|
|
.align 3
|
|
nop
|
|
nop
|
|
thumb4:
|
|
bx lr
|
|
|
|
.thumb_func
|
|
.align 3
|
|
nop
|
|
nop
|
|
nop
|
|
thumb6:
|
|
bx lr
|
|
|
|
backwards:
|
|
do_calls
|