diff options
Diffstat (limited to 'test/DebugInfo/AArch64/eh_frame.ll')
| -rw-r--r-- | test/DebugInfo/AArch64/eh_frame.ll | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/test/DebugInfo/AArch64/eh_frame.ll b/test/DebugInfo/AArch64/eh_frame.ll new file mode 100644 index 0000000000..13436596a5 --- /dev/null +++ b/test/DebugInfo/AArch64/eh_frame.ll @@ -0,0 +1,51 @@ +; RUN: llc -verify-machineinstrs -march=aarch64 %s -filetype=obj -o %t +; RUN: llvm-objdump -s %t | FileCheck %s +@var = global i32 0 + +declare void @bar() + +define i64 @check_largest_class(i32 %in) { + %res = load i32* @var + call void @bar() + %ext = zext i32 %res to i64 + ret i64 %ext +} + +; The really key points we're checking here are: +; * Return register is x30. +; * Pointer format is 0x1b (GNU doesn't appear to understand others). + +; The rest is largely incidental, but not expected to change regularly. + +; Output is: + +; CHECK: Contents of section .eh_frame: +; CHECK-NEXT: 0000 10000000 00000000 017a5200 017c1e01 .........zR..|.. +; CHECK-NEXT: 0010 1b0c1f00 18000000 18000000 00000000 ................ + + +; Won't check the rest, it's rather incidental. +; 0020 24000000 00440c1f 10449e02 93040000 $....D...D...... + + +; The first CIE: +; ------------------- +; 10000000: length of first CIE = 0x10 +; 00000000: This is a CIE +; 01: version = 0x1 +; 7a 52 00: augmentation string "zR" -- pointer format is specified +; 01: code alignment factor 1 +; 7c: data alignment factor -4 +; 1e: return address register 30 (== x30). +; 01: 1 byte of augmentation +; 1b: pointer format 1b: DW_EH_PE_pcrel | DW_EH_PE_sdata4 +; 0c 1f 00: initial instructions: "DW_CFA_def_cfa x31 ofs 0" in this case + +; Next the FDE: +; ------------- +; 18000000: FDE length 0x18 +; 18000000: Uses CIE 0x18 backwards (only coincidentally same as above) +; 00000000: PC begin for this FDE is at 00000000 (relocation is applied here) +; 24000000: FDE applies up to PC begin+0x24 +; 00: Augmentation string length 0 for this FDE +; Rest: call frame instructions |