forked from OSchip/llvm-project
94 lines
2.9 KiB
ArmAsm
94 lines
2.9 KiB
ArmAsm
# REQUIRES: aarch64
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# RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux-gnu %s -o %t.o
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# RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux-gnu %p/Inputs/aarch64-addrifunc.s -o %t1.o
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# RUN: ld.lld --shared --soname=t1.so %t1.o -o %t1.so
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# RUN: ld.lld --pie %t1.so %t.o -o %t
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# RUN: llvm-objdump -d --no-show-raw-insn --mattr=+bti --triple=aarch64-linux-gnu %t | FileCheck %s
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# RUN: ld.lld -shared -Bsymbolic %t1.so %t.o -o %t.so
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# RUN: llvm-objdump -d --no-show-raw-insn --mattr=+bti %t | FileCheck %s --check-prefix=SHARED
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# When the address of an ifunc is taken using a non-got reference which clang
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# can do, LLD exports a canonical PLT entry that may have its address taken so
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# we must use bti c.
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# CHECK: Disassembly of section .plt:
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# CHECK: 00000000000103a0 <.plt>:
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# CHECK-NEXT: 103a0: bti c
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# CHECK-NEXT: stp x16, x30, [sp, #-16]!
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# CHECK-NEXT: adrp x16, 0x30000
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# CHECK-NEXT: ldr x17, [x16, #1344]
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# CHECK-NEXT: add x16, x16, #1344
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# CHECK-NEXT: br x17
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# CHECK-NEXT: nop
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# CHECK-NEXT: nop
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# CHECK: 00000000000103c0 <func1@plt>:
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# CHECK-NEXT: 103c0: adrp x16, 0x30000
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# CHECK-NEXT: ldr x17, [x16, #1352]
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# CHECK-NEXT: add x16, x16, #1352
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# CHECK-NEXT: br x17
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# CHECK-NEXT: nop
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# CHECK-NEXT: nop
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# CHECK-EMPTY:
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# CHECK: Disassembly of section .iplt:
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# CHECK-EMPTY:
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## The address of ifunc1@plt does not escape so it does not need `bti c`,
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## but having bti is not wrong.
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# CHECK-NEXT: 00000000000103e0 <.iplt>:
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# CHECK-NEXT: 103e0: bti c
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# CHECK-NEXT: adrp x16, 0x30000
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# CHECK-NEXT: ldr x17, [x16, #1360]
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# CHECK-NEXT: add x16, x16, #1360
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# CHECK-NEXT: br x17
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# CHECK-NEXT: nop
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# CHECK-EMPTY:
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## The address of ifunc2 (STT_FUNC) escapes, so it must have `bti c`.
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# CHECK-NEXT: 00000000000103f8 <ifunc2>:
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# CHECK-NEXT: 103f8: bti c
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# CHECK-NEXT: adrp x16, 0x30000
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# CHECK-NEXT: ldr x17, [x16, #1368]
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# CHECK-NEXT: add x16, x16, #1368
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# CHECK-NEXT: br x17
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# CHECK-NEXT: nop
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# SHARED: <.iplt>:
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# SHARED-NEXT: bti c
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# SHARED: <ifunc2>:
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# SHARED-NEXT: bti c
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.section ".note.gnu.property", "a"
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.long 4
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.long 0x10
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.long 0x5
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.asciz "GNU"
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.long 0xc0000000 // GNU_PROPERTY_AARCH64_FEATURE_1_AND
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.long 4
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.long 1 // GNU_PROPERTY_AARCH64_FEATURE_1_BTI
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.long 0
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.text
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.globl ifunc1
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.type ifunc1,@gnu_indirect_function
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ifunc1:
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ret
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.globl ifunc2
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.type ifunc2,@gnu_indirect_function
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ifunc2:
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ret
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.globl func1
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.text
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.globl _start
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.type _start, %function
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_start:
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bl func1
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bl ifunc1
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adrp x8, ifunc2
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add x8, x8, :lo12:ifunc2
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ret
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