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      1 // RUN: llvm-mc -triple aarch64-none-linux-gnu -filetype=obj %s -o %t
      2 // RUN: llvm-objdump -s %t | FileCheck %s
      3         .text
      4         .globl foo
      5         .type foo,@function
      6 foo:
      7         .cfi_startproc
      8         ret
      9         .cfi_endproc
     10 
     11 // The really key points we're checking here are:
     12 //  * Return register is x30.
     13 //  * Pointer format is 0x1b (GNU doesn't appear to understand others).
     14 
     15 // The rest is largely incidental, but not expected to change regularly.
     16 
     17 // Output is:
     18 
     19 // CHECK: Contents of section .eh_frame:
     20 // CHECK-NEXT: 0000 10000000 00000000 017a5200 017c1e01  .........zR..|..
     21 // CHECK-NEXT: 0010 1b0c1f00 10000000 18000000 00000000  ................
     22 
     23 
     24 // Won't check the rest, it's rather incidental.
     25 // 0020 04000000 00000000                    ........
     26 
     27 
     28 
     29 // The first CIE:
     30 // -------------------
     31 // 10000000: length of first CIE = 0x10
     32 // 00000000: This is a CIE
     33 // 03: version = 0x3
     34 // 7a 52 00: augmentation string "zR" -- pointer format is specified
     35 // 01: code alignment factor 1
     36 // 7c: data alignment factor -4
     37 // 1e: return address register 30 (== x30).
     38 // 01: 1 byte of augmentation
     39 // 1b: pointer format 1b: DW_EH_PE_pcrel | DW_EH_PE_sdata4
     40 // 0c 1f 00: initial instructions: "DW_CFA_def_cfa x31 ofs 0" in this case
     41 
     42 // Next the FDE:
     43 // -------------
     44 // 10000000: FDE length 0x10
     45 // 18000000: Uses CIE 0x18 backwards (only coincidentally same as above)
     46 // 00000000: PC begin for this FDE is at 00000000 (relocation is applied here)
     47 // 04000000: FDE applies up to PC begin+0x14
     48 // 00: Augmentation string length 0 for this FDE
     49