// 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 %t3 // RUN: llvm-objdump -triple=thumbv7a-none-linux-gnueabi -d %t3 | FileCheck -check-prefix=DSOTHUMB %s // RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d %t3 | FileCheck -check-prefix=DSOARM %s // RUN: llvm-readobj -s -r %t3 | FileCheck -check-prefix=DSOREL %s // REQUIRES: arm // // 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.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-NEXT: func1: // CHECK-NEXT: 11000: 70 47 bx lr // CHECK: func2: // CHECK-NEXT: 11002: 70 47 bx lr // CHECK: func3: // CHECK-NEXT: 11004: 70 47 bx lr // CHECK-NEXT: 11006: 00 00 movs r0, r0 // CHECK: _start: // 11008 + 4 -12 = 0x11000 = func1 // CHECK-NEXT: 11008: ff f7 fa ff bl #-12 // 1100c + 4 -14 = 0x11002 = func2 // CHECK-NEXT: 1100c: ff f7 f9 ff bl #-14 // 11010 + 4 -16 = 0x11004 = func3 // CHECK-NEXT: 11010: 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. // DSOTHUMB: Disassembly of section .text: // DSOTHUMB: func1: // DSOTHUMB-NEXT: 1000: 70 47 bx lr // DSOTHUMB: func2: // DSOTHUMB-NEXT: 1002: 70 47 bx lr // DSOTHUMB: func3: // DSOTHUMB-NEXT: 1004: 70 47 bx lr // DSOTHUMB-NEXT: 1006: 00 00 movs r0, r0 // DSOTHUMB: _start: // 0x1008 + 0x28 + 4 = 0x1034 = PLT func1 // DSOTHUMB-NEXT: 1008: 00 f0 14 e8 blx #40 // 0x100c + 0x34 + 4 = 0x1044 = PLT func2 // DSOTHUMB-NEXT: 100c: 00 f0 1a e8 blx #52 // 0x1010 + 0x40 + 4 = 0x1054 = PLT func3 // DSOTHUMB-NEXT: 1010: 00 f0 20 e8 blx #64 // DSOARM: Disassembly of section .plt: // DSOARM: .plt: // DSOARM-NEXT: 1020: 04 e0 2d e5 str lr, [sp, #-4]! // DSOARM-NEXT: 1024: 04 e0 9f e5 ldr lr, [pc, #4] // DSOARM-NEXT: 1028: 0e e0 8f e0 add lr, pc, lr // DSOARM-NEXT: 102c: 08 f0 be e5 ldr pc, [lr, #8]! // DSOARM-NEXT: 1030: d0 1f 00 00 // 0x1028 + 8 + 1fd0 = 0x3000 // DSOARM-NEXT: 1034: 04 c0 9f e5 ldr r12, [pc, #4] // DSOARM-NEXT: 1038: 0f c0 8c e0 add r12, r12, pc // DSOARM-NEXT: 103c: 00 f0 9c e5 ldr pc, [r12] // DSOARM-NEXT: 1040: cc 1f 00 00 // 0x1038 + 8 + 1fcc = 0x300c // DSOARM-NEXT: 1044: 04 c0 9f e5 ldr r12, [pc, #4] // DSOARM-NEXT: 1048: 0f c0 8c e0 add r12, r12, pc // DSOARM-NEXT: 104c: 00 f0 9c e5 ldr pc, [r12] // DSOARM-NEXT: 1050: c0 1f 00 00 // 0x1048 + 8 + 1fc0 = 0x3010 // DSOARM-NEXT: 1054: 04 c0 9f e5 ldr r12, [pc, #4] // DSOARM-NEXT: 1058: 0f c0 8c e0 add r12, r12, pc // DSOARM-NEXT: 105c: 00 f0 9c e5 ldr pc, [r12] // DSOARM-NEXT: 1060: b4 1f 00 00 // 0x1058 + 8 + 1fb4 = 0x3014 // 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: 0x3000 // 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 (4) .rel.plt { // DSOREL-NEXT: 0x300C R_ARM_JUMP_SLOT func1 0x0 // DSOREL-NEXT: 0x3010 R_ARM_JUMP_SLOT func2 0x0 // DSOREL-NEXT: 0x3014 R_ARM_JUMP_SLOT func3 0x0