arm-gnu-ifunc.s
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// REQUIRES: arm
// RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t.o
// RUN: ld.lld %t.o -o %t
// RUN: llvm-objdump -triple armv7a-none-linux-gnueabi -d --no-show-raw-insn %t | FileCheck %s --check-prefix=DISASM
// RUN: llvm-readobj -r --symbols --sections %t | FileCheck %s
.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
movw r0,:lower16:__rel_iplt_start
movt r0,:upper16:__rel_iplt_start
movw r0,:lower16:__rel_iplt_end
movt r0,:upper16:__rel_iplt_end
// CHECK: Sections [
// CHECK: Section {
// CHECK: Section {
// CHECK: Name: .rel.dyn
// CHECK-NEXT: Type: SHT_REL
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x100F4
// CHECK-NEXT: Offset: 0xF4
// CHECK-NEXT: Size: 16
// CHECK-NEXT: Link:
// CHECK-NEXT: Info: 4
// CHECK: Name: .iplt
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_EXECINSTR
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x11130
// CHECK-NEXT: Offset: 0x130
// CHECK-NEXT: Size: 32
// CHECK: Index: 4
// CHECK-NEXT: Name: .got
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x12150
// CHECK-NEXT: Offset: 0x150
// CHECK-NEXT: Size: 8
// CHECK: Relocations [
// CHECK-NEXT: Section (1) .rel.dyn {
// CHECK-NEXT: 0x12150 R_ARM_IRELATIVE
// CHECK-NEXT: 0x12154 R_ARM_IRELATIVE
// CHECK-NEXT: }
// CHECK-NEXT: ]
// CHECK: Symbol {
// CHECK: Name: __rel_iplt_end
// CHECK-NEXT: Value: 0x10104
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Local
// CHECK-NEXT: Type: None
// CHECK-NEXT: Other [
// CHECK-NEXT: STV_HIDDEN
// CHECK-NEXT: ]
// CHECK-NEXT: Section: .rel.dyn
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: __rel_iplt_start
// CHECK-NEXT: Value: 0x100F4
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Local
// CHECK-NEXT: Type: None
// CHECK-NEXT: Other [
// CHECK-NEXT: STV_HIDDEN
// CHECK-NEXT: ]
// CHECK-NEXT: Section: .rel.dyn
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: _start
// CHECK-NEXT: Value: 0x1110C
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: None
// CHECK-NEXT: Other:
// CHECK-NEXT: Section: .text
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: bar
// CHECK-NEXT: Value: 0x11108
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: GNU_IFunc
// CHECK-NEXT: Other: 0
// CHECK-NEXT: Section: .text
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: foo
// CHECK-NEXT: Value: 0x11104
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: GNU_IFunc
// CHECK-NEXT: Other: 0
// CHECK-NEXT: Section: .text
// CHECK-NEXT: }
// DISASM: Disassembly of section .text:
// DISASM-EMPTY:
// DISASM-NEXT: foo:
// DISASM-NEXT: 11104: bx lr
// DISASM: bar:
// DISASM-NEXT: 11108: bx lr
// DISASM: _start:
// DISASM-NEXT: 1110c: bl #28
// DISASM-NEXT: 11110: bl #40
// 1 * 65536 + 244 = 0x100f4 __rel_iplt_start
// DISASM-NEXT: 11114: movw r0, #244
// DISASM-NEXT: 11118: movt r0, #1
// 1 * 65536 + 260 = 0x10104 __rel_iplt_end
// DISASM-NEXT: 1111c: movw r0, #260
// DISASM-NEXT: 11120: movt r0, #1
// DISASM-EMPTY:
// DISASM-NEXT: Disassembly of section .iplt:
// DISASM-EMPTY:
// DISASM-NEXT: $a:
// DISASM-NEXT: 11130: add r12, pc, #0, #12
// DISASM-NEXT: 11134: add r12, r12, #4096
// DISASM-NEXT: 11138: ldr pc, [r12, #24]!
// DISASM: $d:
// DISASM-NEXT: 1113c: d4 d4 d4 d4 .word 0xd4d4d4d4
// DISASM: $a:
// DISASM-NEXT: 11140: add r12, pc, #0, #12
// DISASM-NEXT: 11144: add r12, r12, #4096
// DISASM-NEXT: 11148: ldr pc, [r12, #12]!
// DISASM: $d:
// DISASM-NEXT: 1114c: d4 d4 d4 d4 .word 0xd4d4d4d4