| # 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 --no-show-raw-insn --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: 0000000000010380 <.plt>: |
| # CHECK-NEXT: 10380: bti c |
| # CHECK-NEXT: stp x16, x30, [sp, #-16]! |
| # CHECK-NEXT: adrp x16, 0x30000 |
| # CHECK-NEXT: ldr x17, [x16, #1288] |
| # CHECK-NEXT: add x16, x16, #1288 |
| # CHECK-NEXT: br x17 |
| # CHECK-NEXT: nop |
| # CHECK-NEXT: nop |
| # CHECK: 00000000000103a0 <func1@plt>: |
| # CHECK-NEXT: 103a0: bti c |
| # CHECK-NEXT: adrp x16, 0x30000 |
| # CHECK-NEXT: ldr x17, [x16, #1296] |
| # CHECK-NEXT: add x16, x16, #1296 |
| # CHECK-NEXT: br x17 |
| # CHECK-NEXT: nop |
| # CHECK-EMPTY: |
| # CHECK: Disassembly of section .iplt: |
| # CHECK-EMPTY: |
| # CHECK-NEXT: 00000000000103c0 <myfunc>: |
| # CHECK-NEXT: 103c0: bti c |
| # CHECK-NEXT: adrp x16, 0x30000 |
| # CHECK-NEXT: ldr x17, [x16, #1304] |
| # CHECK-NEXT: add x16, x16, #1304 |
| # CHECK-NEXT: br x17 |
| # CHECK-NEXT: 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 |
