mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-24 07:31:32 +00:00
66 lines
1.3 KiB
ArmAsm
66 lines
1.3 KiB
ArmAsm
# thumb_bl_out_of_range.s
|
|
# Test THUMB/THUMB-2 bl instructions just out of the branch range limits.
|
|
.syntax unified
|
|
|
|
.section .text.pre,"x"
|
|
|
|
# Add padding so that target is just output of branch range.
|
|
.space 6
|
|
|
|
.global _backward_target
|
|
.code 16
|
|
.thumb_func
|
|
.type _backword_target, %function
|
|
_backward_target:
|
|
bx lr
|
|
.size _backward_target, .-_backward_target
|
|
|
|
.text
|
|
# Use 256-byte alignment so that we know where the stubs start.
|
|
.align 8
|
|
|
|
# Define _start so that linker does not complain.
|
|
.global _start
|
|
.code 32
|
|
.align 2
|
|
.type _start, %function
|
|
_start:
|
|
bx lr
|
|
.size _start, .-_start
|
|
|
|
.global _backward_test
|
|
.code 16
|
|
.thumb_func
|
|
.type _backward_test, %function
|
|
_backward_test:
|
|
bl _backward_target
|
|
.size _backward_test, .-_backward_test
|
|
|
|
.global _forward_test
|
|
.code 16
|
|
.thumb_func
|
|
.type _forward_test, %function
|
|
_forward_test:
|
|
bl _forward_target
|
|
.size _forward_test, .-_forward_test
|
|
|
|
# switch back to ARM mode so that stubs are disassembled correctly.
|
|
.align 2
|
|
.code 32
|
|
|
|
# Align stub table for address matching.
|
|
.align 8
|
|
|
|
.section .text.post,"x"
|
|
|
|
# Add padding so that target is just out of branch range.
|
|
.space 12
|
|
|
|
.global _forward_target
|
|
.code 16
|
|
.thumb_func
|
|
.type _forward_target, %function
|
|
_forward_target:
|
|
bx lr
|
|
.size _forward_target, .-_forward_target
|