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For biendian targets like ARM and AArch64, it is useful to have the

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output of the llvm-dwarfdump and llvm-objdump report the endianness
used when the object files were generated.

Patch by Charlie Turner.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219110 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2014-10-06 07:06:03 +00:00
parent 8e59427e3a
commit 862c93c856
5 changed files with 43 additions and 4 deletions
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5
include/llvm/Object/ELFObjectFile.h
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@@ -855,6 +855,7 @@ uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
template <class ELFT> template <class ELFT>
StringRef ELFObjectFile<ELFT>::getFileFormatName() const { StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
bool IsLittleEndian = ELFT::TargetEndianness == support::little;
switch (EF.getHeader()->e_ident[ELF::EI_CLASS]) { switch (EF.getHeader()->e_ident[ELF::EI_CLASS]) {
case ELF::ELFCLASS32: case ELF::ELFCLASS32:
switch (EF.getHeader()->e_machine) { switch (EF.getHeader()->e_machine) {
@@ -863,7 +864,7 @@ StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
case ELF::EM_X86_64: case ELF::EM_X86_64:
return "ELF32-x86-64"; return "ELF32-x86-64";
case ELF::EM_ARM: case ELF::EM_ARM:
return "ELF32-arm"; return (IsLittleEndian ? "ELF32-arm-little" : "ELF32-arm-big");
case ELF::EM_HEXAGON: case ELF::EM_HEXAGON:
return "ELF32-hexagon"; return "ELF32-hexagon";
case ELF::EM_MIPS: case ELF::EM_MIPS:
@@ -883,7 +884,7 @@ StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
case ELF::EM_X86_64: case ELF::EM_X86_64:
return "ELF64-x86-64"; return "ELF64-x86-64";
case ELF::EM_AARCH64: case ELF::EM_AARCH64:
return "ELF64-aarch64"; return (IsLittleEndian ? "ELF64-aarch64-little" : "ELF64-aarch64-big");
case ELF::EM_PPC64: case ELF::EM_PPC64:
return "ELF64-ppc64"; return "ELF64-ppc64";
case ELF::EM_S390: case ELF::EM_S390:

4
test/DebugInfo/AArch64/big-endian-dump.ll
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@@ -1,4 +1,6 @@
; RUN: llc -O0 -filetype=obj -mtriple=aarch64_be-none-linux < %s | llvm-dwarfdump - ; RUN: llc -O0 -filetype=obj -mtriple=aarch64_be-none-linux < %s | llvm-dwarfdump - | FileCheck %s
; CHECK: file format ELF64-aarch64-big
target datalayout = "E-m:e-i64:64-i128:128-n32:64-S128" target datalayout = "E-m:e-i64:64-i128:128-n32:64-S128"

16
test/DebugInfo/AArch64/little-endian-dump.ll Normal file
View File

@@ -0,0 +1,16 @@
; RUN: llc -O0 -filetype=obj -mtriple=aarch64-none-linux < %s | llvm-dwarfdump - | FileCheck %s
; CHECK: file format ELF64-aarch64-little
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!llvm.ident = !{!5}
!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.6.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !2, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/a/empty.c] [DW_LANG_C99]
!1 = metadata !{metadata !"empty.c", metadata !"/a"}
!2 = metadata !{}
!3 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!4 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
!5 = metadata !{metadata !"clang version 3.6.0 "}

4
test/DebugInfo/ARM/big-endian-dump.ll
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@@ -1,4 +1,6 @@
; RUN: llc -O0 -filetype=obj -mtriple=armeb-none-linux < %s | llvm-dwarfdump - ; RUN: llc -O0 -filetype=obj -mtriple=armeb-none-linux < %s | llvm-dwarfdump - | FileCheck %s
; CHECK: file format ELF32-arm-big
target datalayout = "E-m:e-p:32:32-i64:64-v128:64:128-n32-S64" target datalayout = "E-m:e-p:32:32-i64:64-v128:64:128-n32-S64"

18
test/DebugInfo/ARM/little-endian-dump.ll Normal file
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@@ -0,0 +1,18 @@
; RUN: llc -O0 -filetype=obj -mtriple=arm-none-linux < %s | llvm-dwarfdump - | FileCheck %s
; CHECK: file format ELF32-arm-little
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5, !6}
!llvm.ident = !{!7}
!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.6.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !2, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/a/empty.c] [DW_LANG_C99]
!1 = metadata !{metadata !"empty.c", metadata !"/a"}
!2 = metadata !{}
!3 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!4 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
!5 = metadata !{i32 1, metadata !"wchar_size", i32 4}
!6 = metadata !{i32 1, metadata !"min_enum_size", i32 4}
!7 = metadata !{metadata !"clang version 3.6.0 "}