[llvm-readelf] Make llvm-readelf more compatible with GNU readelf.
Summary:
This change adds a bunch of options that GNU readelf supports. There is one breaking change when invoked as `llvm-readobj`, and three breaking changes when invoked as `llvm-readelf`:
- Add --all (implies --file-header, --program-headers, etc.)
- [Breaking] -a is --all instead of --arm-attributes
- Add --file-header as an alias for --file-headers
- Replace --sections with --sections-headers, keeping --sections as an alias for it
- Add --relocs as an alias for --relocations
- Add --dynamic as an alias for --dynamic-table
- Add --segments as an alias for --program-headers
- Add --section-groups as an alias for --elf-section-groups
- Add --dyn-syms as an alias for --dyn-symbols
- Add --syms as an alias for --symbols
- Add --histogram as an alias for --elf-hash-histogram
- [Breaking] When invoked as `llvm-readelf`, -s is --symbols instead of --sections
- [Breaking] When invoked as `llvm-readelf`, -t is no longer an alias for --symbols
Reviewers: MaskRay, phosek, mcgrathr, jhenderson
Reviewed By: MaskRay, jhenderson
Subscribers: sbc100, aheejin, edd, jhenderson, silvas, echristo, compnerd, kristina, javed.absar, kristof.beyls, llvm-commits, Bigcheese
Differential Revision: https://reviews.llvm.org/D54124
llvm-svn: 346685
diff --git a/llvm/test/tools/llvm-readobj/readelf-s-alias.test b/llvm/test/tools/llvm-readobj/readelf-s-alias.test
new file mode 100644
index 0000000..e34f81e
--- /dev/null
+++ b/llvm/test/tools/llvm-readobj/readelf-s-alias.test
@@ -0,0 +1,49 @@
+# In llvm-readobj, -s is an alias for --sections.
+RUN: llvm-readobj -s %p/Inputs/trivial.obj.elf-i386 \
+RUN: | FileCheck %s -check-prefix SEC
+RUN: llvm-readobj --sections %p/Inputs/trivial.obj.elf-i386 \
+RUN: | FileCheck %s -check-prefix SEC
+
+# In llvm-readelf, -s is an alias for --symbols.
+RUN: llvm-readelf -s %p/Inputs/trivial.obj.elf-i386 \
+RUN: | FileCheck %s -check-prefix SYM
+RUN: llvm-readelf --symbols %p/Inputs/trivial.obj.elf-i386 \
+RUN: | FileCheck %s -check-prefix SYM
+
+SEC: Sections [
+SEC-NEXT: Section {
+SEC-NEXT: Index: 0
+SEC-NEXT: Name: (0)
+SEC-NEXT: Type: SHT_NULL (0x0)
+SEC-NEXT: Flags [ (0x0)
+SEC-NEXT: ]
+SEC-NEXT: Address: 0x0
+SEC-NEXT: Offset: 0x0
+SEC-NEXT: Size: 0
+SEC-NEXT: Link: 0
+SEC-NEXT: Info: 0
+SEC-NEXT: AddressAlignment: 0
+SEC-NEXT: EntrySize: 0
+SEC-NEXT: }
+SEC-NEXT: Section {
+SEC-NEXT: Index: 1
+SEC-NEXT: Name: .text (5)
+SEC-NEXT: Type: SHT_PROGBITS (0x1)
+SEC-NEXT: Flags [ (0x6)
+SEC-NEXT: SHF_ALLOC (0x2)
+SEC-NEXT: SHF_EXECINSTR (0x4)
+SEC-NEXT: ]
+SEC-NEXT: Address: 0x0
+SEC-NEXT: Offset: 0x40
+SEC-NEXT: Size: 42
+SEC-NEXT: Link: 0
+SEC-NEXT: Info: 0
+SEC-NEXT: AddressAlignment: 16
+SEC-NEXT: EntrySize: 0
+SEC-NEXT: }
+
+SYM: Symbol table '.symtab' contains {{.*}} entries:
+SYM-NEXT: Num: Value Size Type Bind Vis Ndx Name
+SYM-NEXT: 0: {{.*}} NOTYPE {{.*}} UND
+SYM-NEXT: 1: {{.*}} FILE {{.*}} trivial.ll
+SYM-NEXT: 2: {{.*}} OBJECT {{.*}} .L.str