llvm-6502/test/MC/ARM/eh-directive-cantunwind.s
Logan Chien c24a374331 Implement AsmParser for ARM unwind directives.
This commit implements the AsmParser for fnstart, fnend,
cantunwind, personality, handlerdata, pad, setfp, save, and
vsave directives.

This commit fixes some minor issue in the ARMELFStreamer:

* The switch back to corresponding section after the .fnend
  directive.

* Emit the unwind opcode while processing .fnend directive
  if there is no .handlerdata directive.

* Emit the unwind opcode to .ARM.extab while processing
  .handlerdata even if .personality directive does not exist.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181603 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-10 16:17:24 +00:00

52 lines
1.5 KiB
ArmAsm

@ RUN: llvm-mc %s -triple=armv7-unknown-linux-gnueabi -filetype=obj -o - \
@ RUN: | llvm-readobj -s -sd -sr | FileCheck %s
@ Check the .cantunwind directive
@ When a function contains a .cantunwind directive, we should create an entry
@ in corresponding .ARM.exidx, and its second word should be EXIDX_CANTUNWIND.
.syntax unified
.text
.globl func1
.align 2
.type func1,%function
.fnstart
func1:
bx lr
.cantunwind
.fnend
@-------------------------------------------------------------------------------
@ Check .text section
@-------------------------------------------------------------------------------
@ CHECK: Sections [
@ CHECK: Section {
@ CHECK: Name: .text
@ CHECK: SectionData (
@ CHECK: 0000: 1EFF2FE1 |../.|
@ CHECK: )
@ CHECK: }
@-------------------------------------------------------------------------------
@ Check .ARM.exidx section
@-------------------------------------------------------------------------------
@ CHECK: Section {
@ CHECK: Name: .ARM.exidx
@ CHECK: Relocations [
@ CHECK: 0x0 R_ARM_PREL31 .text 0x0
@ CHECK: ]
@-------------------------------------------------------------------------------
@ The first word should be the offset to .text.
@ The second word should be EXIDX_CANTUNWIND (01000000).
@-------------------------------------------------------------------------------
@ CHECK: SectionData (
@ CHECK: 0000: 00000000 01000000 |........|
@ CHECK: )
@ CHECK: }
@ CHECK: ]