xref: /aosp_15_r20/external/llvm/test/MC/ARM/aligned-blx.s (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker@ RUN: llvm-mc -triple thumbv7-apple-ios -filetype=obj %s -o %t
2*9880d681SAndroid Build Coastguard Worker@ RUN: llvm-objdump -macho -d %t | FileCheck %s
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Worker        @ Size: 2 bytes
5*9880d681SAndroid Build Coastguard Worker        .thumb_func _f1
6*9880d681SAndroid Build Coastguard Worker        .thumb
7*9880d681SAndroid Build Coastguard Worker        .globl _f1
8*9880d681SAndroid Build Coastguard Worker_f1:
9*9880d681SAndroid Build Coastguard Worker        bx lr
10*9880d681SAndroid Build Coastguard Worker
11*9880d681SAndroid Build Coastguard Worker        @ A properly aligned ARM function
12*9880d681SAndroid Build Coastguard Worker        .globl _aligned
13*9880d681SAndroid Build Coastguard Worker        .p2align 2
14*9880d681SAndroid Build Coastguard Worker        .arm
15*9880d681SAndroid Build Coastguard Worker_aligned:
16*9880d681SAndroid Build Coastguard Worker        bx lr
17*9880d681SAndroid Build Coastguard Worker
18*9880d681SAndroid Build Coastguard Worker        @ Align this Thumb function so we can predict the outcome of
19*9880d681SAndroid Build Coastguard Worker        @ "Align(PC, 4)" during blx operation.
20*9880d681SAndroid Build Coastguard Worker        .thumb_func _test
21*9880d681SAndroid Build Coastguard Worker        .thumb
22*9880d681SAndroid Build Coastguard Worker        .p2align 2
23*9880d681SAndroid Build Coastguard Worker        .globl _test
24*9880d681SAndroid Build Coastguard Worker_test:
25*9880d681SAndroid Build Coastguard Worker        blx _elsewhere
26*9880d681SAndroid Build Coastguard Worker        blx _aligned    @ PC=0 (mod 4)
27*9880d681SAndroid Build Coastguard Worker        blx _aligned    @ PC=0 (mod 4)
28*9880d681SAndroid Build Coastguard Worker        movs r0, r0
29*9880d681SAndroid Build Coastguard Worker        blx _aligned    @ PC=2 (mod 4)
30*9880d681SAndroid Build Coastguard Worker
31*9880d681SAndroid Build Coastguard Worker@ CHECK: blx _elsewhere
32*9880d681SAndroid Build Coastguard Worker@ CHECK: ff f7 fa ef blx _aligned
33*9880d681SAndroid Build Coastguard Worker@ CHECK: ff f7 f8 ef blx _aligned
34*9880d681SAndroid Build Coastguard Worker@ CHECK: ff f7 f6 ef blx _aligned
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