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| // REQUIRES: arm
// RUN: llvm-mc -filetype=obj -triple=thumbv7a-none-linux-gnueabi %p/Inputs/arm-plt-reloc.s -o %t1
// RUN: llvm-mc -filetype=obj -triple=thumbv7a-none-linux-gnueabi %s -o %t2
// RUN: ld.lld %t1 %t2 -o %t
// RUN: llvm-objdump -triple=thumbv7a-none-linux-gnueabi -d %t | FileCheck %s
// RUN: ld.lld -shared %t1 %t2 -o %t.so
// RUN: llvm-objdump -triple=thumbv7a-none-linux-gnueabi -d %t.so | FileCheck -check-prefix=DSO %s
// RUN: llvm-readobj -S -r %t.so | FileCheck -check-prefix=DSOREL %s
//
// Test PLT entry generation
.syntax unified
.text
.align 2
.globl _start
.type _start,%function
_start:
// FIXME, interworking is only supported for BL via BLX at the moment, when
// interworking thunks are available for b.w and b<cond>.w this can be altered
// to test the different forms of interworking.
bl func1
bl func2
bl func3
// Executable, expect no PLT
// CHECK: Disassembly of section .text:
// CHECK-EMPTY:
// CHECK-NEXT: func1:
// CHECK-NEXT: 110b4: 70 47 bx lr
// CHECK: func2:
// CHECK-NEXT: 110b6: 70 47 bx lr
// CHECK: func3:
// CHECK-NEXT: 110b8: 70 47 bx lr
// CHECK-NEXT: 110ba: d4 d4
// CHECK: _start:
// . + 4 -12 = 0x110b4 = func1
// CHECK-NEXT: 110bc: ff f7 fa ff bl #-12
// . + 4 -14 = 0x110b6 = func2
// CHECK-NEXT: 110c0: ff f7 f9 ff bl #-14
// . + 4 -16 = 0x110b8 = func3
// CHECK-NEXT: 110c4: ff f7 f8 ff bl #-16
// Expect PLT entries as symbols can be preempted
// .text is Thumb and .plt is ARM, llvm-objdump can currently only disassemble
// as ARM or Thumb. Work around by disassembling twice.
// DSO: Disassembly of section .text:
// DSO-EMPTY:
// DSO-NEXT: func1:
// DSO-NEXT: 1214: 70 47 bx lr
// DSO: func2:
// DSO-NEXT: 1216: 70 47 bx lr
// DSO: func3:
// DSO-NEXT: 1218: 70 47 bx lr
// DSO-NEXT: 121a: d4 d4 bmi #-88
// DSO: _start:
// . + 48 + 4 = 0x1250 = PLT func1
// DSO-NEXT: 121c: 00 f0 18 e8 blx #48
// . + 60 + 4 = 0x1260 = PLT func2
// DSO-NEXT: 1220: 00 f0 1e e8 blx #60
// . + 72 + 4 = 0x1270 = PLT func3
// DSO-NEXT: 1224: 00 f0 24 e8 blx #72
// DSO: Disassembly of section .plt:
// DSO-EMPTY:
// DSO-NEXT: $a:
// DSO-NEXT: 1230: 04 e0 2d e5 str lr, [sp, #-4]!
// (0x1234 + 8) + (0 RoR 12) + 8192 + 164 = 0x32e0 = .got.plt[3]
// DSO-NEXT: 1234: 00 e6 8f e2 add lr, pc, #0, #12
// DSO-NEXT: 1238: 02 ea 8e e2 add lr, lr, #8192
// DSO-NEXT: 123c: a4 f0 be e5 ldr pc, [lr, #164]!
// DSO: $d:
// DSO-NEXT: 1240: d4 d4 d4 d4 .word 0xd4d4d4d4
// DSO-NEXT: 1244: d4 d4 d4 d4 .word 0xd4d4d4d4
// DSO-NEXT: 1248: d4 d4 d4 d4 .word 0xd4d4d4d4
// DSO-NEXT: 124c: d4 d4 d4 d4 .word 0xd4d4d4d4
// DSO: $a:
// (0x1250 + 8) + (0 RoR 12) + 8192 + 140 = 0x32e4
// DSO-NEXT: 1250: 00 c6 8f e2 add r12, pc, #0, #12
// DSO-NEXT: 1254: 02 ca 8c e2 add r12, r12, #8192
// DSO-NEXT: 1258: 8c f0 bc e5 ldr pc, [r12, #140]!
// DSO: $d:
// DSO-NEXT: 125c: d4 d4 d4 d4 .word 0xd4d4d4d4
// DSO: $a:
// (0x1260 + 8) + (0 RoR 12) + 8192 + 128 = 0x32e8
// DSO-NEXT: 1260: 00 c6 8f e2 add r12, pc, #0, #12
// DSO-NEXT: 1264: 02 ca 8c e2 add r12, r12, #8192
// DSO-NEXT: 1268: 80 f0 bc e5 ldr pc, [r12, #128]!
// DSO: $d:
// DSO-NEXT: 126c: d4 d4 d4 d4 .word 0xd4d4d4d4
// DSO: $a:
// (0x1270 + 8) + (0 RoR 12) + 8192 + 116 = 0x32ec
// DSO-NEXT: 1270: 00 c6 8f e2 add r12, pc, #0, #12
// DSO-NEXT: 1274: 02 ca 8c e2 add r12, r12, #8192
// DSO-NEXT: 1278: 74 f0 bc e5 ldr pc, [r12, #116]!
// DSO: $d:
// DSO-NEXT: 127c: d4 d4 d4 d4 .word 0xd4d4d4d4
// DSOREL: Name: .got.plt
// DSOREL-NEXT: Type: SHT_PROGBITS
// DSOREL-NEXT: Flags [
// DSOREL-NEXT: SHF_ALLOC
// DSOREL-NEXT: SHF_WRITE
// DSOREL-NEXT: ]
// DSOREL-NEXT: Address: 0x32D8
// DSOREL-NEXT: Offset:
// DSOREL-NEXT: Size: 24
// DSOREL-NEXT: Link:
// DSOREL-NEXT: Info:
// DSOREL-NEXT: AddressAlignment: 4
// DSOREL-NEXT: EntrySize:
// DSOREL: Relocations [
// DSOREL-NEXT: Section (5) .rel.plt {
// DSOREL-NEXT: 0x32E4 R_ARM_JUMP_SLOT func1 0x0
// DSOREL-NEXT: 0x32E8 R_ARM_JUMP_SLOT func2 0x0
// DSOREL-NEXT: 0x32EC R_ARM_JUMP_SLOT func3 0x0
|