| // REQUIRES: arm |
| // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t |
| // RUN: ld.lld %t -o %t2 2>&1 |
| // RUN: llvm-objdump -d -triple=armv7a-none-linux-gnueabi %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-NEXT: _start: |
| // CHECK-NEXT: 11000: 01 00 00 eb bl #4 <func1> |
| // CHECK-NEXT: 11004: 01 00 00 eb bl #4 <func2> |
| // CHECK-NEXT: 11008: 1e ff 2f e1 bx lr |
| // CHECK: func1: |
| // CHECK-NEXT: 1100c: 1e ff 2f e1 bx lr |
| // CHECK: func2: |
| // CHECK-NEXT: 11010: 1e ff 2f e1 bx lr |
| // CHECK: __gxx_personality_v0: |
| // CHECK-NEXT: 11014: 1e ff 2f e1 bx lr |
| // CHECK: __aeabi_unwind_cpp_pr0: |
| // CHECK-NEXT: 11018: 1e ff 2f e1 bx lr |
| |
| // CHECK-EXIDX: Contents of section .ARM.exidx: |
| // 100d4 + f38 = 1100c = func1 (inline unwinding data) |
| // 100dc + f34 = 11010 = func2 (100e0 + c = 100ec = .ARM.extab entry) |
| // CHECK-EXIDX-NEXT: 100d4 380f0000 08849780 340f0000 0c000000 |
| // 100e4 + f30 = 11014 = terminate = func2 + sizeof(func2) |
| // CHECK-EXIDX-NEXT: 100e4 300f0000 01000000 |
| // CHECK-EXIDX-NEXT: Contents of section .ARM.extab: |
| // 100ec + f28 = 11014 = __gxx_personality_v0 |
| // CHECK-EXIDX-NEXT: 100ec 280f0000 b0b0b000 00000000 |
| |
| // 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: 24 |
| |
| // 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: 24 |
| // CHECK-PT-NEXT: MemSize: 24 |
| // CHECK-PT-NEXT: Flags [ (0x4) |
| // CHECK-PT-NEXT: PF_R (0x4) |
| // CHECK-PT-NEXT: ] |
| // CHECK-PT-NEXT: Alignment: 4 |
| // CHECK-PT-NEXT: } |
