| // REQUIRES: arm |
| // RUN: llvm-mc -filetype=obj --arm-add-build-attributes -triple=armv7a-none-linux-gnueabi %s -o %t |
| // RUN: ld.lld %t -o %t2 |
| // RUN: llvm-objdump -d -triple=armv7a-none-linux-gnueabi --no-show-raw-insn %t2 | FileCheck %s |
| // RUN: llvm-objdump -s -triple=armv7a-none-linux-gnueabi %t2 | FileCheck -check-prefix=CHECK-EXIDX %s |
| // RUN: llvm-readobj --program-headers --sections %t2 | FileCheck -check-prefix=CHECK-PT %s |
| |
| // Test that inline unwinding table entries and references to .ARM.extab |
| // entries survive the re-ordering of the .ARM.exidx section |
| |
| .syntax unified |
| // Will produce an ARM.exidx entry with inline unwinding instructions |
| .section .text.func1, "ax",%progbits |
| .global func1 |
| func1: |
| .fnstart |
| bx lr |
| .save {r7, lr} |
| .setfp r7, sp, #0 |
| .fnend |
| |
| // Unwinding instructions for .text2 too large for an inline entry ARM.exidx |
| // entry. A separate .ARM.extab section is created to hold the unwind entries |
| // The .ARM.exidx table entry has a reference to the .ARM.extab section. |
| .section .text.func2, "ax",%progbits |
| .global func2 |
| func2: |
| .fnstart |
| bx lr |
| .personality __gxx_personality_v0 |
| .handlerdata |
| .long 0 |
| .section .text.func2 |
| .fnend |
| |
| // Dummy implementation of personality routines to satisfy reference from |
| // exception tables |
| .section .text.__gcc_personality_v0, "ax", %progbits |
| .global __gxx_personality_v0 |
| __gxx_personality_v0: |
| bx lr |
| |
| .section .text.__aeabi_unwind_cpp_pr0, "ax", %progbits |
| .global __aeabi_unwind_cpp_pr0 |
| __aeabi_unwind_cpp_pr0: |
| bx lr |
| |
| .text |
| .global _start |
| _start: |
| bl func1 |
| bl func2 |
| bx lr |
| |
| // CHECK: Disassembly of section .text: |
| // CHECK-EMPTY: |
| // CHECK-NEXT: _start: |
| // CHECK-NEXT: 11108: bl #4 <func1> |
| // CHECK-NEXT: bl #4 <func2> |
| // CHECK-NEXT: bx lr |
| // CHECK: func1: |
| // CHECK-NEXT: 11114: bx lr |
| // CHECK: func2: |
| // CHECK-NEXT: 11118: bx lr |
| // CHECK: __gxx_personality_v0: |
| // CHECK-NEXT: 1111c: bx lr |
| // CHECK: __aeabi_unwind_cpp_pr0: |
| // CHECK-NEXT: 11120: bx lr |
| |
| // 100d4 + 0x1034 = 0x11108 = main (linker generated cantunwind) |
| // 100dc + 0x1038 = 0x11114 = func1 (inline unwinding data) |
| // CHECK-EXIDX: 100d4 34100000 01000000 38100000 08849780 |
| // 100e4 + 0x1034 = 0x11118 = func2 (100e8 + 14 = 100fc = .ARM.extab entry) |
| // 100ec + 0x1030 = 0x1111c = __gxx_personality_v0 (linker generated cantunwind) |
| // CHECK-EXIDX-NEXT: 100e4 34100000 14000000 30100000 01000000 |
| // 100f4 + 0x1030 = 1101c = sentinel |
| // CHECK-EXIDX-NEXT: 100f4 30100000 01000000 |
| |
| // CHECK-PT: Name: .ARM.exidx |
| // CHECK-PT-NEXT: Type: SHT_ARM_EXIDX (0x70000001) |
| // CHECK-PT-NEXT: Flags [ |
| // CHECK-PT-NEXT: SHF_ALLOC |
| // CHECK-PT-NEXT: SHF_LINK_ORDER |
| // CHECK-PT-NEXT: ] |
| // CHECK-PT-NEXT: Address: 0x100D4 |
| // CHECK-PT-NEXT: Offset: 0xD4 |
| // CHECK-PT-NEXT: Size: 40 |
| |
| // CHECK-PT: Type: PT_ARM_EXIDX (0x70000001) |
| // CHECK-PT-NEXT: Offset: 0xD4 |
| // CHECK-PT-NEXT: VirtualAddress: 0x100D4 |
| // CHECK-PT-NEXT: PhysicalAddress: 0x100D4 |
| // CHECK-PT-NEXT: FileSize: 40 |
| // CHECK-PT-NEXT: MemSize: 40 |
| // CHECK-PT-NEXT: Flags [ (0x4) |
| // CHECK-PT-NEXT: PF_R (0x4) |
| // CHECK-PT-NEXT: ] |
| // CHECK-PT-NEXT: Alignment: 4 |
| // CHECK-PT-NEXT: } |
