| # REQUIRES: aarch64 |
| # RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux-gnu %s -o %t.o |
| # RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux-gnu %p/Inputs/aarch64-addrifunc.s -o %t1.o |
| |
| # RUN: ld.lld --shared --soname=t1.so %t1.o -o %t1.so |
| # RUN: ld.lld --pie %t1.so %t.o -o %t |
| # RUN: llvm-objdump -d -mattr=+bti -triple=aarch64-linux-gnu %t | FileCheck %s |
| |
| # When the address of an ifunc is taken using a non-got reference which clang |
| # can do, LLD exports a canonical PLT entry that may have its address taken so |
| # we must use bti c. |
| |
| # CHECK: Disassembly of section .plt: |
| # CHECK: 0000000000010340 .plt: |
| # CHECK-NEXT: 10340: 5f 24 03 d5 bti c |
| # CHECK-NEXT: 10344: f0 7b bf a9 stp x16, x30, [sp, #-16]! |
| # CHECK-NEXT: 10348: 10 01 00 90 adrp x16, #131072 |
| # CHECK-NEXT: 1034c: 11 5e 42 f9 ldr x17, [x16, #1208] |
| # CHECK-NEXT: 10350: 10 e2 12 91 add x16, x16, #1208 |
| # CHECK-NEXT: 10354: 20 02 1f d6 br x17 |
| # CHECK-NEXT: 10358: 1f 20 03 d5 nop |
| # CHECK-NEXT: 1035c: 1f 20 03 d5 nop |
| # CHECK: 0000000000010360 func1@plt: |
| # CHECK-NEXT: 10360: 5f 24 03 d5 bti c |
| # CHECK-NEXT: 10364: 10 01 00 90 adrp x16, #131072 |
| # CHECK-NEXT: 10368: 11 62 42 f9 ldr x17, [x16, #1216] |
| # CHECK-NEXT: 1036c: 10 02 13 91 add x16, x16, #1216 |
| # CHECK-NEXT: 10370: 20 02 1f d6 br x17 |
| # CHECK-NEXT: 10374: 1f 20 03 d5 nop |
| # CHECK-NEXT: ... |
| # CHECK: 0000000000010380 myfunc: |
| # CHECK-NEXT: 10380: 5f 24 03 d5 bti c |
| # CHECK-NEXT: 10384: 10 01 00 90 adrp x16, #131072 |
| # CHECK-NEXT: 10388: 11 66 42 f9 ldr x17, [x16, #1224] |
| # CHECK-NEXT: 1038c: 10 22 13 91 add x16, x16, #1224 |
| # CHECK-NEXT: 10390: 20 02 1f d6 br x17 |
| # CHECK-NEXT: 10394: 1f 20 03 d5 nop |
| |
| .section ".note.gnu.property", "a" |
| .long 4 |
| .long 0x10 |
| .long 0x5 |
| .asciz "GNU" |
| |
| .long 0xc0000000 // GNU_PROPERTY_AARCH64_FEATURE_1_AND |
| .long 4 |
| .long 1 // GNU_PROPERTY_AARCH64_FEATURE_1_BTI |
| .long 0 |
| |
| .text |
| .globl myfunc |
| .type myfunc,@gnu_indirect_function |
| myfunc: |
| ret |
| |
| .globl func1 |
| |
| .text |
| .globl _start |
| .type _start, %function |
| _start: |
| bl func1 |
| adrp x8, myfunc |
| add x8, x8, :lo12:myfunc |
| ret |