2 // RUN: llvm-mc -filetype=obj -triple=thumbv7a-none-linux-gnueabi %p/Inputs/arm-plt-reloc.s -o %t1
3 // RUN: llvm-mc -filetype=obj -triple=thumbv7a-none-linux-gnueabi %s -o %t2
4 // RUN: ld.lld %t1 %t2 -o %t
5 // RUN: llvm-objdump -triple=thumbv7a-none-linux-gnueabi -d %t | FileCheck %s
6 // RUN: ld.lld --hash-style=sysv -shared %t1 %t2 -o %t3
7 // RUN: llvm-objdump -triple=thumbv7a-none-linux-gnueabi -d %t3 | FileCheck -check-prefix=DSOTHUMB %s
8 // RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d %t3 | FileCheck -check-prefix=DSOARM %s
9 // RUN: llvm-readobj -s -r %t3 | FileCheck -check-prefix=DSOREL %s
11 // Test PLT entry generation
16 .type _start,%function
18 // FIXME, interworking is only supported for BL via BLX at the moment, when
19 // interworking thunks are available for b.w and b<cond>.w this can be altered
20 // to test the different forms of interworking.
25 // Executable, expect no PLT
26 // CHECK: Disassembly of section .text:
28 // CHECK-NEXT: 11000: 70 47 bx lr
30 // CHECK-NEXT: 11002: 70 47 bx lr
32 // CHECK-NEXT: 11004: 70 47 bx lr
33 // CHECK-NEXT: 11006: d4 d4
35 // 11008 + 4 -12 = 0x11000 = func1
36 // CHECK-NEXT: 11008: ff f7 fa ff bl #-12
37 // 1100c + 4 -14 = 0x11002 = func2
38 // CHECK-NEXT: 1100c: ff f7 f9 ff bl #-14
39 // 11010 + 4 -16 = 0x11004 = func3
40 // CHECK-NEXT: 11010: ff f7 f8 ff bl #-16
42 // Expect PLT entries as symbols can be preempted
43 // .text is Thumb and .plt is ARM, llvm-objdump can currently only disassemble
44 // as ARM or Thumb. Work around by disassembling twice.
45 // DSOTHUMB: Disassembly of section .text:
46 // DSOTHUMB-NEXT: func1:
47 // DSOTHUMB-NEXT: 1000: 70 47 bx lr
49 // DSOTHUMB-NEXT: 1002: 70 47 bx lr
51 // DSOTHUMB-NEXT: 1004: 70 47 bx lr
52 // DSOTHUMB-NEXT: 1006: d4 d4 bmi #-88
54 // 0x1008 + 0x34 + 4 = 0x1040 = PLT func1
55 // DSOTHUMB-NEXT: 1008: 00 f0 1a e8 blx #52
56 // 0x100c + 0x40 + 4 = 0x1050 = PLT func2
57 // DSOTHUMB-NEXT: 100c: 00 f0 20 e8 blx #64
58 // 0x1010 + 0x4C + 4 = 0x1060 = PLT func3
59 // DSOTHUMB-NEXT: 1010: 00 f0 26 e8 blx #76
60 // DSOARM: Disassembly of section .plt:
62 // DSOARM-NEXT: 1020: 04 e0 2d e5 str lr, [sp, #-4]!
63 // (0x1024 + 8) + (0 RoR 12) + (0 RoR 20) + (0xfdc) = 0x2008 = .got.plt[3]
64 // DSOARM-NEXT: 1024: 00 e6 8f e2 add lr, pc, #0, #12
65 // DSOARM-NEXT: 1028: 00 ea 8e e2 add lr, lr, #0, #20
66 // DSOARM-NEXT: 102c: dc ff be e5 ldr pc, [lr, #4060]!
69 // DSOARM-NEXT: 1030: d4 d4 d4 d4 .word 0xd4d4d4d4
70 // DSOARM-NEXT: 1034: d4 d4 d4 d4 .word 0xd4d4d4d4
71 // DSOARM-NEXT: 1038: d4 d4 d4 d4 .word 0xd4d4d4d4
72 // DSOARM-NEXT: 103c: d4 d4 d4 d4 .word 0xd4d4d4d4
74 // (0x1040 + 8) + (0 RoR 12) + (0 RoR 20) + (0xfc4) = 0x200c
75 // DSOARM-NEXT: 1040: 00 c6 8f e2 add r12, pc, #0, #12
76 // DSOARM-NEXT: 1044: 00 ca 8c e2 add r12, r12, #0, #20
77 // DSOARM-NEXT: 1048: c4 ff bc e5 ldr pc, [r12, #4036]!
79 // DSOARM-NEXT: 104c: d4 d4 d4 d4 .word 0xd4d4d4d4
81 // (0x1050 + 8) + (0 RoR 12) + (0 RoR 20) + (0xfb8) = 0x2010
82 // DSOARM-NEXT: 1050: 00 c6 8f e2 add r12, pc, #0, #12
83 // DSOARM-NEXT: 1054: 00 ca 8c e2 add r12, r12, #0, #20
84 // DSOARM-NEXT: 1058: b8 ff bc e5 ldr pc, [r12, #4024]!
86 // DSOARM-NEXT: 105c: d4 d4 d4 d4 .word 0xd4d4d4d4
88 // (0x1060 + 8) + (0 RoR 12) + (0 RoR 20) + (0xfac) = 0x2014
89 // DSOARM-NEXT: 1060: 00 c6 8f e2 add r12, pc, #0, #12
90 // DSOARM-NEXT: 1064: 00 ca 8c e2 add r12, r12, #0, #20
91 // DSOARM-NEXT: 1068: ac ff bc e5 ldr pc, [r12, #4012]!
93 // DSOARM-NEXT: 106c: d4 d4 d4 d4 .word 0xd4d4d4d4
95 // DSOREL: Name: .got.plt
96 // DSOREL-NEXT: Type: SHT_PROGBITS
97 // DSOREL-NEXT: Flags [
98 // DSOREL-NEXT: SHF_ALLOC
99 // DSOREL-NEXT: SHF_WRITE
101 // DSOREL-NEXT: Address: 0x2000
102 // DSOREL-NEXT: Offset:
103 // DSOREL-NEXT: Size: 24
104 // DSOREL-NEXT: Link:
105 // DSOREL-NEXT: Info:
106 // DSOREL-NEXT: AddressAlignment: 4
107 // DSOREL-NEXT: EntrySize:
108 // DSOREL: Relocations [
109 // DSOREL-NEXT: Section (4) .rel.plt {
110 // DSOREL-NEXT: 0x200C R_ARM_JUMP_SLOT func1 0x0
111 // DSOREL-NEXT: 0x2010 R_ARM_JUMP_SLOT func2 0x0
112 // DSOREL-NEXT: 0x2014 R_ARM_JUMP_SLOT func3 0x0