6da44ad75d
Currently, YAML has the following syntax for describing the symbols:
Symbols:
Local:
LocalSymbol1:
...
LocalSymbol2:
...
...
Global:
GlobalSymbol1:
...
Weak:
...
GNUUnique:
I.e. symbols are grouped by their bindings. That is not very convenient,
because:
It does not allow to set a custom binding, what can be useful for producing
broken/special outputs for test cases. Adding a new binding would require to
change a syntax (what we observed when added GNUUnique recently).
It does not allow to change the order of the symbols in .symtab/.dynsym,
i.e. currently all Local symbols are placed first, then Global, Weak and GNUUnique
are following, but we are not able to change the order.
It is not consistent. Binding is just one of the properties of the symbol,
we do not group them by other properties.
It makes the code more complex that it can be. This patch shows it can be simplified
with the change performed.
The patch changes the syntax to just:
Symbols:
Symbol1:
...
Symbol2:
...
...
With that, we are able to work with the binding field just like with any other symbol property.
Differential revision: https://reviews.llvm.org/D60122
llvm-svn: 357595
123 lines
4.5 KiB
Plaintext
123 lines
4.5 KiB
Plaintext
# RUN: yaml2obj %s > %t.so
|
|
# RUN: llvm-readobj -elf-output-style GNU --notes %t.so | FileCheck %s --check-prefix=GNU
|
|
# RUN: llvm-readobj -elf-output-style LLVM --notes %t.so | FileCheck %s --check-prefix=LLVM
|
|
|
|
# GNU: Displaying notes found at file offset 0x00000340 with length 0x00000020:
|
|
# GNU-NEXT: Owner Data size Description
|
|
# GNU-NEXT: GNU 0x00000010 NT_GNU_ABI_TAG (ABI version tag)
|
|
# GNU-NEXT: OS: Linux, ABI: 2.6.32
|
|
|
|
# GNU: Displaying notes found at file offset 0x00000360 with length 0x00000020:
|
|
# GNU-NEXT: Owner Data size Description
|
|
# GNU-NEXT: GNU 0x00000010 NT_GNU_BUILD_ID (unique build ID bitstring)
|
|
# GNU-NEXT: Build ID: 4fcb712aa6387724a9f465a32cd8c14b
|
|
|
|
# GNU: Displaying notes found at file offset 0x000003cc with length 0x0000001c:
|
|
# GNU-NEXT: Owner Data size Description
|
|
# GNU-NEXT: GNU 0x00000009 NT_GNU_GOLD_VERSION (gold version)
|
|
# GNU-NEXT: Version: gold 1.11
|
|
|
|
# LLVM: Notes [
|
|
# LLVM-NEXT: NoteSection {
|
|
# LLVM-NEXT: Offset: 0x340
|
|
# LLVM-NEXT: Size: 0x20
|
|
# LLVM-NEXT: Note {
|
|
# LLVM-NEXT: Owner: GNU
|
|
# LLVM-NEXT: Data size: 0x10
|
|
# LLVM-NEXT: Type: NT_GNU_ABI_TAG (ABI version tag)
|
|
# LLVM-NEXT: OS: Linux
|
|
# LLVM-NEXT: ABI: 2.6.32
|
|
# LLVM-NEXT: }
|
|
# LLVM-NEXT: }
|
|
# LLVM-NEXT: NoteSection {
|
|
# LLVM-NEXT: Offset: 0x360
|
|
# LLVM-NEXT: Size: 0x20
|
|
# LLVM-NEXT: Note {
|
|
# LLVM-NEXT: Owner: GNU
|
|
# LLVM-NEXT: Data size: 0x10
|
|
# LLVM-NEXT: Type: NT_GNU_BUILD_ID (unique build ID bitstring)
|
|
# LLVM-NEXT: Build ID: 4fcb712aa6387724a9f465a32cd8c14b
|
|
# LLVM-NEXT: }
|
|
# LLVM-NEXT: }
|
|
# LLVM-NEXT: NoteSection {
|
|
# LLVM-NEXT: Offset: 0x3CC
|
|
# LLVM-NEXT: Size: 0x1C
|
|
# LLVM-NEXT: Note {
|
|
# LLVM-NEXT: Owner: GNU
|
|
# LLVM-NEXT: Data size: 0x9
|
|
# LLVM-NEXT: Type: NT_GNU_GOLD_VERSION (gold version)
|
|
# LLVM-NEXT: Version: gold 1.11
|
|
# LLVM-NEXT: }
|
|
# LLVM-NEXT: }
|
|
# LLVM-NEXT: ]
|
|
|
|
--- !ELF
|
|
FileHeader:
|
|
Class: ELFCLASS64
|
|
Data: ELFDATA2LSB
|
|
Type: ET_EXEC
|
|
Machine: EM_X86_64
|
|
Sections:
|
|
- Name: .note.ABI-tag
|
|
Type: SHT_NOTE
|
|
AddressAlign: 0x0000000000000004
|
|
Content: 040000001000000001000000474E550000000000020000000600000020000000
|
|
- Name: .note.gnu.build-id
|
|
Type: SHT_NOTE
|
|
Flags: [ SHF_ALLOC ]
|
|
Address: 0x0000000000400120
|
|
AddressAlign: 0x0000000000000004
|
|
Content: 040000001000000003000000474E55004FCB712AA6387724A9F465A32CD8C14B
|
|
- Name: .text
|
|
Type: SHT_PROGBITS
|
|
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
|
|
Address: 0x0000000000400140
|
|
AddressAlign: 0x0000000000000001
|
|
Content: 31C0C3
|
|
- Name: .eh_frame
|
|
Type: SHT_PROGBITS
|
|
Flags: [ SHF_ALLOC ]
|
|
Address: 0x0000000000400148
|
|
AddressAlign: 0x0000000000000008
|
|
Content: 1400000000000000017A5200017810011B0C070890010000140000001C000000D8FFFFFF030000000000000000000000
|
|
- Name: .data
|
|
Type: SHT_PROGBITS
|
|
Flags: [ SHF_WRITE, SHF_ALLOC ]
|
|
Address: 0x0000000000401000
|
|
AddressAlign: 0x0000000000000001
|
|
Content: ''
|
|
- Name: .bss
|
|
Type: SHT_NOBITS
|
|
Flags: [ SHF_WRITE, SHF_ALLOC ]
|
|
Address: 0x0000000000401000
|
|
AddressAlign: 0x0000000000000001
|
|
- Name: .comment
|
|
Type: SHT_PROGBITS
|
|
Flags: [ SHF_MERGE, SHF_STRINGS ]
|
|
AddressAlign: 0x0000000000000001
|
|
Content: 004743433A2028474E552920352E342E3000
|
|
- Name: .note.gnu.gold-version
|
|
Type: SHT_NOTE
|
|
AddressAlign: 0x0000000000000004
|
|
Content: 040000000900000004000000474E5500676F6C6420312E3131000000
|
|
Symbols:
|
|
- Name: reduced.c
|
|
Type: STT_FILE
|
|
- Type: STT_FILE
|
|
- Name: main
|
|
Type: STT_FUNC
|
|
Section: .text
|
|
Value: 0x0000000000400140
|
|
Size: 0x0000000000000003
|
|
Binding: STB_GLOBAL
|
|
- Name: _edata
|
|
Value: 0x0000000000401000
|
|
Binding: STB_GLOBAL
|
|
- Name: __bss_start
|
|
Value: 0x0000000000401000
|
|
Binding: STB_GLOBAL
|
|
- Name: _end
|
|
Value: 0x0000000000401000
|
|
Binding: STB_GLOBAL
|
|
...
|