arm-gnu-ifunc-plt.s
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// REQUIRES: arm
// RUN: llvm-mc -filetype=obj -triple=armv7a-linux-gnueabihf %S/Inputs/arm-shared.s -o %t1.o
// RUN: ld.lld %t1.o --shared -soname=t.so -o %t.so
// RUN: llvm-mc -filetype=obj -triple=armv7a-linux-gnueabihf %s -o %t.o
// RUN: ld.lld %t.so %t.o -o %tout
// RUN: llvm-objdump --triple=armv7a-linux-gnueabihf -d --no-show-raw-insn %tout | FileCheck %s --check-prefix=DISASM
// RUN: llvm-objdump -s %tout | FileCheck %s --check-prefix=GOTPLT
// RUN: llvm-readobj -r --dynamic-table %tout | FileCheck %s
// Check that the IRELATIVE relocations are last in the .got
// CHECK: Relocations [
// CHECK-NEXT: Section (5) .rel.dyn {
// CHECK-NEXT: 0x302E0 R_ARM_GLOB_DAT bar2 0x0
// CHECK-NEXT: 0x302E4 R_ARM_GLOB_DAT zed2 0x0
// CHECK-NEXT: 0x302E8 R_ARM_IRELATIVE - 0x0
// CHECK-NEXT: 0x302EC R_ARM_IRELATIVE - 0x0
// CHECK-NEXT: }
// CHECK-NEXT: Section (6) .rel.plt {
// CHECK-NEXT: 0x402FC R_ARM_JUMP_SLOT bar2 0x0
// CHECK-NEXT: 0x40300 R_ARM_JUMP_SLOT zed2 0x0
// CHECK-NEXT: }
// CHECK-NEXT: ]
// Check that the GOT entries refer back to the ifunc resolver
// GOTPLT: Contents of section .got:
// GOTPLT-NEXT: 302e0 00000000 00000000 dc010200 e0010200
// GOTPLT: Contents of section .got.plt:
// GOTPLT-NEXT: 402f0 00000000 00000000 00000000 00020200
// GOTPLT-NEXT: 40300 00020200
// DISASM: Disassembly of section .text:
// DISASM-EMPTY:
// DISASM-NEXT: <foo>:
// DISASM-NEXT: 201dc: bx lr
// DISASM: <bar>:
// DISASM-NEXT: 201e0: bx lr
// DISASM: <_start>:
// DISASM-NEXT: 201e4: bl #84
// DISASM-NEXT: 201e8: bl #96
// DISASM: <$d.1>:
// DISASM-NEXT: 201ec: 00 00 00 00 .word 0x00000000
// DISASM-NEXT: 201f0: 04 00 00 00 .word 0x00000004
// DISASM: 201f4: bl #36
// DISASM-NEXT: 201f8: bl #48
// DISASM-EMPTY:
// DISASM-NEXT: Disassembly of section .plt:
// DISASM-EMPTY:
// DISASM-NEXT: <$a>:
// DISASM-NEXT: 20200: str lr, [sp, #-4]!
// DISASM-NEXT: 20204: add lr, pc, #0, #12
// DISASM-NEXT: 20208: add lr, lr, #32
// DISASM-NEXT: 2020c: ldr pc, [lr, #236]!
// DISASM: <$d>:
// DISASM-NEXT: 20210: d4 d4 d4 d4 .word 0xd4d4d4d4
// DISASM-NEXT: 20214: d4 d4 d4 d4 .word 0xd4d4d4d4
// DISASM-NEXT: 20218: d4 d4 d4 d4 .word 0xd4d4d4d4
// DISASM-NEXT: 2021c: d4 d4 d4 d4 .word 0xd4d4d4d4
// DISASM: <$a>:
// DISASM-NEXT: 20220: add r12, pc, #0, #12
// DISASM-NEXT: 20224: add r12, r12, #32
// DISASM-NEXT: 20228: ldr pc, [r12, #212]!
// DISASM: <$d>:
// DISASM-NEXT: 2022c: d4 d4 d4 d4 .word 0xd4d4d4d4
// DISASM: <$a>:
// DISASM-NEXT: 20230: add r12, pc, #0, #12
// DISASM-NEXT: 20234: add r12, r12, #32
// DISASM-NEXT: 20238: ldr pc, [r12, #200]!
// DISASM: <$d>:
// DISASM-NEXT: 2023c: d4 d4 d4 d4 .word 0xd4d4d4d4
// DISASM: <$a>:
// DISASM-NEXT: 20240: add r12, pc, #0, #12
// DISASM-NEXT: 20244: add r12, r12, #16
// DISASM-NEXT: 20248: ldr pc, [r12, #160]!
// DISASM: <$d>:
// DISASM-NEXT: 2024c: d4 d4 d4 d4 .word 0xd4d4d4d4
// DISASM: <$a>:
// DISASM-NEXT: 20250: add r12, pc, #0, #12
// DISASM-NEXT: 20254: add r12, r12, #16
// DISASM-NEXT: 20258: ldr pc, [r12, #148]!
// DISASM: <$d>:
// DISASM-NEXT: 2025c: d4 d4 d4 d4 .word 0xd4d4d4d4
.syntax unified
.text
.type foo STT_GNU_IFUNC
.globl foo
foo:
bx lr
.type bar STT_GNU_IFUNC
.globl bar
bar:
bx lr
.globl _start
_start:
bl foo
bl bar
// Create entries in the .got and .rel.dyn so that we don't just have
// IRELATIVE
.word bar2(got)
.word zed2(got)
bl bar2
bl zed2