1# REQUIRES: aarch64 2# RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux-gnu %s -o %t.o 3# RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux-gnu %p/Inputs/aarch64-addrifunc.s -o %t1.o 4 5# RUN: ld.lld --shared --soname=t1.so %t1.o -o %t1.so 6# RUN: ld.lld --pie %t1.so %t.o -o %t 7# RUN: llvm-objdump -d --no-show-raw-insn --mattr=+bti --triple=aarch64-linux-gnu %t | FileCheck %s 8 9# When the address of an ifunc is taken using a non-got reference which clang 10# can do, LLD exports a canonical PLT entry that may have its address taken so 11# we must use bti c. 12 13# CHECK: Disassembly of section .plt: 14# CHECK: 0000000000010380 <.plt>: 15# CHECK-NEXT: 10380: bti c 16# CHECK-NEXT: stp x16, x30, [sp, #-16]! 17# CHECK-NEXT: adrp x16, #131072 18# CHECK-NEXT: ldr x17, [x16, #1288] 19# CHECK-NEXT: add x16, x16, #1288 20# CHECK-NEXT: br x17 21# CHECK-NEXT: nop 22# CHECK-NEXT: nop 23# CHECK: 00000000000103a0 <func1@plt>: 24# CHECK-NEXT: 103a0: bti c 25# CHECK-NEXT: adrp x16, #131072 26# CHECK-NEXT: ldr x17, [x16, #1296] 27# CHECK-NEXT: add x16, x16, #1296 28# CHECK-NEXT: br x17 29# CHECK-NEXT: nop 30# CHECK-EMPTY: 31# CHECK: Disassembly of section .iplt: 32# CHECK-EMPTY: 33# CHECK-NEXT: 00000000000103c0 <myfunc>: 34# CHECK-NEXT: 103c0: bti c 35# CHECK-NEXT: adrp x16, #131072 36# CHECK-NEXT: ldr x17, [x16, #1304] 37# CHECK-NEXT: add x16, x16, #1304 38# CHECK-NEXT: br x17 39# CHECK-NEXT: nop 40 41.section ".note.gnu.property", "a" 42.long 4 43.long 0x10 44.long 0x5 45.asciz "GNU" 46 47.long 0xc0000000 // GNU_PROPERTY_AARCH64_FEATURE_1_AND 48.long 4 49.long 1 // GNU_PROPERTY_AARCH64_FEATURE_1_BTI 50.long 0 51 52.text 53.globl myfunc 54.type myfunc,@gnu_indirect_function 55myfunc: 56 ret 57 58.globl func1 59 60.text 61.globl _start 62.type _start, %function 63_start: 64 bl func1 65 adrp x8, myfunc 66 add x8, x8, :lo12:myfunc 67 ret 68