| // REQUIRES: arm |
| // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %p/Inputs/arm-plt-reloc.s -o %t1 |
| // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t2 |
| // RUN: ld.lld %t1 %t2 -o %t |
| // RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d %t | FileCheck %s |
| // RUN: ld.lld --hash-style=sysv -shared %t1 %t2 -o %t3 |
| // RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d %t3 | FileCheck -check-prefix=DSO %s |
| // RUN: llvm-readobj -s -r %t3 | FileCheck -check-prefix=DSOREL %s |
| // |
| // Test PLT entry generation |
| .syntax unified |
| .text |
| .align 2 |
| .globl _start |
| .type _start,%function |
| _start: |
| b func1 |
| bl func2 |
| beq func3 |
| |
| // Executable, expect no PLT |
| // CHECK: Disassembly of section .text: |
| // CHECK-NEXT: func1: |
| // CHECK-NEXT: 11000: 1e ff 2f e1 bx lr |
| // CHECK: func2: |
| // CHECK-NEXT: 11004: 1e ff 2f e1 bx lr |
| // CHECK: func3: |
| // CHECK-NEXT: 11008: 1e ff 2f e1 bx lr |
| // CHECK: _start: |
| // CHECK-NEXT: 1100c: fb ff ff ea b #-20 <func1> |
| // CHECK-NEXT: 11010: fb ff ff eb bl #-20 <func2> |
| // CHECK-NEXT: 11014: fb ff ff 0a beq #-20 <func3> |
| |
| // Expect PLT entries as symbols can be preempted |
| // The .got.plt and .plt displacement is small so we can use small PLT entries. |
| // DSO: Disassembly of section .text: |
| // DSO-NEXT: func1: |
| // DSO-NEXT: 1000: 1e ff 2f e1 bx lr |
| // DSO: func2: |
| // DSO-NEXT: 1004: 1e ff 2f e1 bx lr |
| // DSO: func3: |
| // DSO-NEXT: 1008: 1e ff 2f e1 bx lr |
| // DSO: _start: |
| // S(0x1040) - P(0x100c) + A(-8) = 0x2c = 32 |
| // DSO-NEXT: 100c: 0b 00 00 ea b #44 |
| // S(0x1050) - P(0x1010) + A(-8) = 0x38 = 56 |
| // DSO-NEXT: 1010: 0e 00 00 eb bl #56 |
| // S(0x10160) - P(0x1014) + A(-8) = 0x44 = 68 |
| // DSO-NEXT: 1014: 11 00 00 0a beq #68 |
| // DSO-NEXT: Disassembly of section .plt: |
| // DSO-NEXT: $a: |
| // DSO-NEXT: 1020: 04 e0 2d e5 str lr, [sp, #-4]! |
| // (0x1024 + 8) + (0 RoR 12) + (0 RoR 20) + (0xfdc) = 0x2008 = .got.plt[3] |
| // DSO-NEXT: 1024: 00 e6 8f e2 add lr, pc, #0, #12 |
| // DSO-NEXT: 1028: 00 ea 8e e2 add lr, lr, #0, #20 |
| // DSO-NEXT: 102c: dc ff be e5 ldr pc, [lr, #4060]! |
| // DSO: $d: |
| // DSO-NEXT: 1030: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // DSO-NEXT: 1034: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // DSO-NEXT: 1038: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // DSO-NEXT: 103c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // DSO: $a: |
| // (0x1040 + 8) + (0 RoR 12) + (0 RoR 20) + (0xfc4) = 0x200c |
| // DSO-NEXT: 1040: 00 c6 8f e2 add r12, pc, #0, #12 |
| // DSO-NEXT: 1044: 00 ca 8c e2 add r12, r12, #0, #20 |
| // DSO-NEXT: 1048: c4 ff bc e5 ldr pc, [r12, #4036]! |
| // DSO: $d: |
| // DSO-NEXT: 104c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // DSO: $a: |
| // (0x1050 + 8) + (0 RoR 12) + (0 RoR 20) + (0xfb8) = 0x2010 |
| // DSO-NEXT: 1050: 00 c6 8f e2 add r12, pc, #0, #12 |
| // DSO-NEXT: 1054: 00 ca 8c e2 add r12, r12, #0, #20 |
| // DSO-NEXT: 1058: b8 ff bc e5 ldr pc, [r12, #4024]! |
| // DSO: $d: |
| // DSO-NEXT: 105c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // DSO: $a: |
| // (0x1060 + 8) + (0 RoR 12) + (0 RoR 20) + (0xfac) = 0x2014 |
| // DSO-NEXT: 1060: 00 c6 8f e2 add r12, pc, #0, #12 |
| // DSO-NEXT: 1064: 00 ca 8c e2 add r12, r12, #0, #20 |
| // DSO-NEXT: 1068: ac ff bc e5 ldr pc, [r12, #4012]! |
| // DSO: $d: |
| // DSO-NEXT: 106c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| |
| |
| // DSOREL: Name: .got.plt |
| // DSOREL-NEXT: Type: SHT_PROGBITS |
| // DSOREL-NEXT: Flags [ |
| // DSOREL-NEXT: SHF_ALLOC |
| // DSOREL-NEXT: SHF_WRITE |
| // DSOREL-NEXT: ] |
| // DSOREL-NEXT: Address: 0x2000 |
| // DSOREL-NEXT: Offset: |
| // DSOREL-NEXT: Size: 24 |
| // DSOREL-NEXT: Link: |
| // DSOREL-NEXT: Info: |
| // DSOREL-NEXT: AddressAlignment: 4 |
| // DSOREL-NEXT: EntrySize: |
| // DSOREL: Relocations [ |
| // DSOREL-NEXT: Section {{.*}} .rel.plt { |
| // DSOREL-NEXT: 0x200C R_ARM_JUMP_SLOT func1 0x0 |
| // DSOREL-NEXT: 0x2010 R_ARM_JUMP_SLOT func2 0x0 |
| // DSOREL-NEXT: 0x2014 R_ARM_JUMP_SLOT func3 0x0 |
| |
| // Test a large separation between the .plt and .got.plt |
| // The .got.plt and .plt displacement is large but still within the range |
| // of the short plt sequence. |
| // RUN: echo "SECTIONS { \ |
| // RUN: .text 0x1000 : { *(.text) } \ |
| // RUN: .plt 0x2000 : { *(.plt) *(.plt.*) } \ |
| // RUN: .got.plt 0x1100000 : { *(.got.plt) } \ |
| // RUN: }" > %t.script |
| // RUN: ld.lld --hash-style=sysv --script %t.script -shared %t1 %t2 -o %t4 |
| // RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d %t4 | FileCheck --check-prefix=CHECKHIGH %s |
| // RUN: llvm-readobj -s -r %t4 | FileCheck --check-prefix=DSORELHIGH %s |
| |
| // CHECKHIGH: Disassembly of section .text: |
| // CHECKHIGH-NEXT: func1: |
| // CHECKHIGH-NEXT: 1000: 1e ff 2f e1 bx lr |
| // CHECKHIGH: func2: |
| // CHECKHIGH-NEXT: 1004: 1e ff 2f e1 bx lr |
| // CHECKHIGH: func3: |
| // CHECKHIGH-NEXT: 1008: 1e ff 2f e1 bx lr |
| // CHECKHIGH: _start: |
| // CHECKHIGH-NEXT: 100c: 03 04 00 ea b #4108 <$a> |
| // CHECKHIGH-NEXT: 1010: 06 04 00 eb bl #4120 <$a> |
| // CHECKHIGH-NEXT: 1014: 09 04 00 0a beq #4132 <$a> |
| // CHECKHIGH-NEXT: Disassembly of section .plt: |
| // CHECKHIGH-NEXT: $a: |
| // CHECKHIGH-NEXT: 2000: 04 e0 2d e5 str lr, [sp, #-4]! |
| // CHECKHIGH-NEXT: 2004: 10 e6 8f e2 add lr, pc, #16, #12 |
| // CHECKHIGH-NEXT: 2008: fd ea 8e e2 add lr, lr, #1036288 |
| // CHECKHIGH-NEXT: 200c: fc ff be e5 ldr pc, [lr, #4092]! |
| // CHECKHIGH: $d: |
| // CHECKHIGH-NEXT: 2010: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKHIGH-NEXT: 2014: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKHIGH-NEXT: 2018: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKHIGH-NEXT: 201c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKHIGH: $a: |
| // CHECKHIGH-NEXT: 2020: 10 c6 8f e2 add r12, pc, #16, #12 |
| // CHECKHIGH-NEXT: 2024: fd ca 8c e2 add r12, r12, #1036288 |
| // CHECKHIGH-NEXT: 2028: e4 ff bc e5 ldr pc, [r12, #4068]! |
| // CHECKHIGH: $d: |
| // CHECKHIGH-NEXT: 202c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKHIGH: $a: |
| // CHECKHIGH-NEXT: 2030: 10 c6 8f e2 add r12, pc, #16, #12 |
| // CHECKHIGH-NEXT: 2034: fd ca 8c e2 add r12, r12, #1036288 |
| // CHECKHIGH-NEXT: 2038: d8 ff bc e5 ldr pc, [r12, #4056]! |
| // CHECKHIGH: $d: |
| // CHECKHIGH-NEXT: 203c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKHIGH: $a: |
| // CHECKHIGH-NEXT: 2040: 10 c6 8f e2 add r12, pc, #16, #12 |
| // CHECKHIGH-NEXT: 2044: fd ca 8c e2 add r12, r12, #1036288 |
| // CHECKHIGH-NEXT: 2048: cc ff bc e5 ldr pc, [r12, #4044]! |
| // CHECKHIGH: $d: |
| // CHECKHIGH-NEXT: 204c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| |
| // DSORELHIGH: Name: .got.plt |
| // DSORELHIGH-NEXT: Type: SHT_PROGBITS |
| // DSORELHIGH-NEXT: Flags [ |
| // DSORELHIGH-NEXT: SHF_ALLOC |
| // DSORELHIGH-NEXT: SHF_WRITE |
| // DSORELHIGH-NEXT: ] |
| // DSORELHIGH-NEXT: Address: 0x1100000 |
| // DSORELHIGH: Relocations [ |
| // DSORELHIGH-NEXT: Section {{.*}} .rel.plt { |
| // DSORELHIGH-NEXT: 0x110000C R_ARM_JUMP_SLOT func1 0x0 |
| // DSORELHIGH-NEXT: 0x1100010 R_ARM_JUMP_SLOT func2 0x0 |
| // DSORELHIGH-NEXT: 0x1100014 R_ARM_JUMP_SLOT func3 0x0 |
| |
| // Test a very large separation between the .plt and .got.plt so we must use |
| // large plt entries that do not have any range restriction. |
| // RUN: echo "SECTIONS { \ |
| // RUN: .text 0x1000 : { *(.text) } \ |
| // RUN: .plt 0x2000 : { *(.plt) *(.plt.*) } \ |
| // RUN: .got.plt 0x11111100 : { *(.got.plt) } \ |
| // RUN: }" > %t2.script |
| // RUN: ld.lld --hash-style=sysv --script %t2.script -shared %t1 %t2 -o %t5 |
| // RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d %t5 | FileCheck --check-prefix=CHECKLONG %s |
| // RUN: llvm-readobj -s -r %t5 | FileCheck --check-prefix=DSORELLONG %s |
| |
| // CHECKLONG: Disassembly of section .text: |
| // CHECKLONG-NEXT: func1: |
| // CHECKLONG-NEXT: 1000: 1e ff 2f e1 bx lr |
| // CHECKLONG: func2: |
| // CHECKLONG-NEXT: 1004: 1e ff 2f e1 bx lr |
| // CHECKLONG: func3: |
| // CHECKLONG-NEXT: 1008: 1e ff 2f e1 bx lr |
| // CHECKLONG: _start: |
| // CHECKLONG-NEXT: 100c: 03 04 00 ea b #4108 <$a> |
| // CHECKLONG-NEXT: 1010: 06 04 00 eb bl #4120 <$a> |
| // CHECKLONG-NEXT: 1014: 09 04 00 0a beq #4132 <$a> |
| // CHECKLONG-NEXT: Disassembly of section .plt: |
| // CHECKLONG-NEXT: $a: |
| // CHECKLONG-NEXT: 2000: 04 e0 2d e5 str lr, [sp, #-4]! |
| // CHECKLONG-NEXT: 2004: 04 e0 9f e5 ldr lr, [pc, #4] |
| // CHECKLONG-NEXT: 2008: 0e e0 8f e0 add lr, pc, lr |
| // CHECKLONG-NEXT: 200c: 08 f0 be e5 ldr pc, [lr, #8]! |
| // CHECKLONG: $d: |
| // CHECKLONG-NEXT: 2010: f0 f0 10 11 .word 0x1110f0f0 |
| // CHECKLONG-NEXT: 2014: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKLONG-NEXT: 2018: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKLONG-NEXT: 201c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKLONG: $a: |
| // CHECKLONG-NEXT: 2020: 04 c0 9f e5 ldr r12, [pc, #4] |
| // CHECKLONG-NEXT: 2024: 0f c0 8c e0 add r12, r12, pc |
| // CHECKLONG-NEXT: 2028: 00 f0 9c e5 ldr pc, [r12] |
| // CHECKLONG: $d: |
| // CHECKLONG-NEXT: 202c: e0 f0 10 11 .word 0x1110f0e0 |
| // CHECKLONG: $a: |
| // CHECKLONG-NEXT: 2030: 04 c0 9f e5 ldr r12, [pc, #4] |
| // CHECKLONG-NEXT: 2034: 0f c0 8c e0 add r12, r12, pc |
| // CHECKLONG-NEXT: 2038: 00 f0 9c e5 ldr pc, [r12] |
| // CHECKLONG: $d: |
| // CHECKLONG-NEXT: 203c: d4 f0 10 11 .word 0x1110f0d4 |
| // CHECKLONG: $a: |
| // CHECKLONG-NEXT: 2040: 04 c0 9f e5 ldr r12, [pc, #4] |
| // CHECKLONG-NEXT: 2044: 0f c0 8c e0 add r12, r12, pc |
| // CHECKLONG-NEXT: 2048: 00 f0 9c e5 ldr pc, [r12] |
| // CHECKLONG: $d: |
| // CHECKLONG-NEXT: 204c: c8 f0 10 11 .word 0x1110f0c8 |
| |
| // DSORELLONG: Name: .got.plt |
| // DSORELLONG-NEXT: Type: SHT_PROGBITS |
| // DSORELLONG-NEXT: Flags [ |
| // DSORELLONG-NEXT: SHF_ALLOC |
| // DSORELLONG-NEXT: SHF_WRITE |
| // DSORELLONG-NEXT: ] |
| // DSORELLONG-NEXT: Address: 0x11111100 |
| // DSORELLONG: Relocations [ |
| // DSORELLONG-NEXT: Section {{.*}} .rel.plt { |
| // DSORELLONG-NEXT: 0x1111110C R_ARM_JUMP_SLOT func1 0x0 |
| // DSORELLONG-NEXT: 0x11111110 R_ARM_JUMP_SLOT func2 0x0 |
| // DSORELLONG-NEXT: 0x11111114 R_ARM_JUMP_SLOT func3 0x0 |
| |
| // Test a separation between the .plt and .got.plt that is part in range of |
| // short table entries and part needing long entries. We use the long entries |
| // only when we need to. |
| // RUN: echo "SECTIONS { \ |
| // RUN: .text 0x1000 : { *(.text) } \ |
| // RUN: .plt 0x2000 : { *(.plt) *(.plt.*) } \ |
| // RUN: .got.plt 0x8002020 : { *(.got.plt) } \ |
| // RUN: }" > %t3.script |
| // RUN: ld.lld --hash-style=sysv --script %t3.script -shared %t1 %t2 -o %t6 |
| // RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d %t6 | FileCheck --check-prefix=CHECKMIX %s |
| // RUN: llvm-readobj -s -r %t6 | FileCheck --check-prefix=DSORELMIX %s |
| |
| // CHECKMIX: Disassembly of section .text: |
| // CHECKMIX-NEXT: func1: |
| // CHECKMIX-NEXT: 1000: 1e ff 2f e1 bx lr |
| // CHECKMIX: func2: |
| // CHECKMIX-NEXT: 1004: 1e ff 2f e1 bx lr |
| // CHECKMIX: func3: |
| // CHECKMIX-NEXT: 1008: 1e ff 2f e1 bx lr |
| // CHECKMIX: _start: |
| // CHECKMIX-NEXT: 100c: 03 04 00 ea b #4108 <$a> |
| // CHECKMIX-NEXT: 1010: 06 04 00 eb bl #4120 <$a> |
| // CHECKMIX-NEXT: 1014: 09 04 00 0a beq #4132 <$a> |
| // CHECKMIX-NEXT: Disassembly of section .plt: |
| // CHECKMIX-NEXT: $a: |
| // CHECKMIX-NEXT: 2000: 04 e0 2d e5 str lr, [sp, #-4]! |
| // CHECKMIX-NEXT: 2004: 04 e0 9f e5 ldr lr, [pc, #4] |
| // CHECKMIX-NEXT: 2008: 0e e0 8f e0 add lr, pc, lr |
| // CHECKMIX-NEXT: 200c: 08 f0 be e5 ldr pc, [lr, #8]! |
| // CHECKMIX: $d: |
| // CHECKMIX-NEXT: 2010: 10 00 00 08 .word 0x08000010 |
| // CHECKMIX-NEXT: 2014: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKMIX-NEXT: 2018: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKMIX-NEXT: 201c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKMIX: $a: |
| // CHECKMIX-NEXT: 2020: 04 c0 9f e5 ldr r12, [pc, #4] |
| // CHECKMIX-NEXT: 2024: 0f c0 8c e0 add r12, r12, pc |
| // CHECKMIX-NEXT: 2028: 00 f0 9c e5 ldr pc, [r12] |
| // CHECKMIX: $d: |
| // CHECKMIX-NEXT: 202c: 00 00 00 08 .word 0x08000000 |
| // CHECKMIX: $a: |
| // CHECKMIX-NEXT: 2030: 7f c6 8f e2 add r12, pc, #133169152 |
| // CHECKMIX-NEXT: 2034: ff ca 8c e2 add r12, r12, #1044480 |
| // CHECKMIX-NEXT: 2038: f8 ff bc e5 ldr pc, [r12, #4088]! |
| // CHECKMIX: $d: |
| // CHECKMIX-NEXT: 203c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| // CHECKMIX: $a: |
| // CHECKMIX-NEXT: 2040: 7f c6 8f e2 add r12, pc, #133169152 |
| // CHECKMIX-NEXT: 2044: ff ca 8c e2 add r12, r12, #1044480 |
| // CHECKMIX-NEXT: 2048: ec ff bc e5 ldr pc, [r12, #4076]! |
| // CHECKMIX: $d: |
| // CHECKMIX-NEXT: 204c: d4 d4 d4 d4 .word 0xd4d4d4d4 |
| |
| // DSORELMIX: Name: .got.plt |
| // DSORELMIX-NEXT: Type: SHT_PROGBITS |
| // DSORELMIX-NEXT: Flags [ |
| // DSORELMIX-NEXT: SHF_ALLOC |
| // DSORELMIX-NEXT: SHF_WRITE |
| // DSORELMIX-NEXT: ] |
| // DSORELMIX-NEXT: Address: 0x8002020 |
| // DSORELMIX: Section {{.*}} .rel.plt { |
| // DSORELMIX-NEXT: 0x800202C R_ARM_JUMP_SLOT func1 0x0 |
| // DSORELMIX-NEXT: 0x8002030 R_ARM_JUMP_SLOT func2 0x0 |
| // DSORELMIX-NEXT: 0x8002034 R_ARM_JUMP_SLOT func3 0x0 |
