derek.holloway
7502bf64a4
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47 lines
1.7 KiB
LLVM
47 lines
1.7 KiB
LLVM
; RUN: llc -verify-machineinstrs -mtriple=aarch64-none-linux-gnu %s -filetype=obj -o %t
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; RUN: llvm-objdump -s %t | FileCheck %s
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declare i32 @__gxx_personality_v0(...)
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declare void @bar()
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define i64 @foo(i64 %lhs, i64 %rhs) personality ptr @__gxx_personality_v0 {
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invoke void @bar() to label %end unwind label %clean
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end:
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ret i64 0
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clean:
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%tst = landingpad { ptr, i32 } cleanup
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ret i64 42
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}
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; CHECK: Contents of section .eh_frame:
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; CHECK: 0000 1c000000 00000000 017a504c 5200017c .........zPLR..|
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; CHECK: 0010 1e0b9c00 00000000 0000001c 1b0c1f00 ................
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; Don't really care about the rest:
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; 0020 1c000000 24000000 00000000 24000000 ....$.......$...
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; 0030 08000000 00000000 00440c1f 10449e02 .........D...D..
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; The key test here is that the personality routine is sanely encoded (under the
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; small memory model it must be an 8-byte value for full generality: code+data <
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; 4GB, but you might need both +4GB and -4GB depending on where things end
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; up. However, for completeness:
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; First CIE:
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; ----------
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; 1c000000: Length = 0x1c
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; 00000000: This is a CIE
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; 03: Version 3
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; 7a 50 4c 52 00: Augmentation string "zPLR" (personality routine, language-specific data, pointer format)
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; 01: Code alignment factor 1
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; 78: Data alignment factor: -8
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; 1e: Return address in x30
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; 07: Augmentation data 0xb bytes (this is key!)
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; 00: Personality encoding is DW_EH_PE_absptr
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; 00 00 00 00 00 00 00 00: First part of aug (personality routine). Relocated, obviously
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; 00: Second part of aug (language-specific data): absolute pointer format used
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; 1b: pointer format: pc-relative signed 4-byte. Just like GNU.
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; 0c 1f 00: Initial instructions ("DW_CFA_def_cfa x31 ofs 0" in this case)
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