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158da0d39f
This patch makes the `.eh_frame` extension an alias for `.debug_frame`. Up till now it was only possible to dump the section using objdump, but not with dwarfdump. Since the two are essentially interchangeable, we dump whichever of the two is present. As a workaround, this patch also adds parsing for 3 currently unimplemented CFA instructions: `DW_CFA_def_cfa_expression`, `DW_CFA_expression`, and `DW_CFA_val_expression`. Because I lack the required knowledge, I just parse the fields without actually creating the instructions. Finally, this also fixes the typo in the `.debug_frame` section name which incorrectly contained a trailing `s`. Differential revision: https://reviews.llvm.org/D37852 llvm-svn: 313530
39 lines
1.3 KiB
LLVM
39 lines
1.3 KiB
LLVM
; RUN: llc -filetype=obj %s -o - | llvm-dwarfdump -debug-frame - | FileCheck %s
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; IR reduced from a dummy:
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; void foo() {}
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; x86 Darwin uses different register mappings for eh_frame and debug_frame
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; sections. Check that the right mapping is used in debug_frame.
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; In the debug_frame mapping, regsiter 4 is ESP, thus the below tests that
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; the CFA is ESP+4 upon function entry.
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; CHECK: .debug_frame contents:
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; CHECK: ffffffff CIE
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; CHECK-NOT: {{CIE|FDE}}
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; CHECK: DW_CFA_def_cfa: reg4 +4
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; ModuleID = 'foo.c'
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target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128"
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target triple = "i386-apple-macosx10.10.0"
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; Function Attrs: nounwind ssp
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define void @foo() #0 {
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entry:
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ret void
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}
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attributes #0 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 (trunk 230514) (llvm/trunk 230518)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "foo.c", directory: "/tmp")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 2}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"PIC Level", i32 2}
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!6 = !{!"clang version 3.7.0 (trunk 230514) (llvm/trunk 230518)"}
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