forked from OSchip/llvm-project
100 lines
3.3 KiB
ArmAsm
100 lines
3.3 KiB
ArmAsm
// 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 %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: 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
|
|
|
|
// 100d4 + f2c = 11000 = main (linker generated cantunwind)
|
|
// 100dc + f30 = 1100c = func1 (inline unwinding data)
|
|
// CHECK-EXIDX: 100d4 2c0f0000 01000000 300f0000 08849780
|
|
// 100e4 + f2c = 11010 = func2 (100e8 + 14 = 100fc = .ARM.extab entry)
|
|
// 100ec + f28 = 11014 = __gcc_personality_v0 (linker generated cantunwind)
|
|
// CHECK-EXIDX-NEXT: 100e4 2c0f0000 14000000 280f0000 01000000
|
|
// 100f4 + f28 = 1101c = sentinel
|
|
// CHECK-EXIDX-NEXT: 100f4 280f0000 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: }
|