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# thumb_blx_in_range.s
#
# Test THUMB/THUMB-2 blx instructions just within the branch range limits.
# Because bit 1 of the branch target comes from the branch instruction
# address, the branch range from PC (branch instruction address + 4) is
# acutally -((1<<22) + 2) to ((1<<22) - 4) for THUMB and -((1<<24) + 2) to
# ((1<<24) - 4) from THUMB2.
.syntax unified
.section .text.pre,"x"
# Add padding so that target is just in branch range.
.space 8
.align 2
.global _backward_target
.code 32
.type _backword_target, %function
_backward_target:
bx lr
.size _backward_target, .-_backward_target
.text
# 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:
nop.n
blx _backward_target
.size _backward_test, .-_backward_test
.align 2
.global _forward_test
.code 16
.thumb_func
.type _forward_test, %function
_forward_test:
blx _forward_target
.size _forward_test, .-_forward_test
.code 32
.section .text.post,"x"
# Add padding so that target is just in branch range.
.space 12
.align 2
.global _forward_target
.code 32
.type _forward_target, %function
_forward_target:
bx lr
.size _forward_target, .-_forward_target
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