llvm-6502/test/Object/yaml2obj-elf-symbol-basic.yaml
Sean Silva 326c193e0a [yaml2obj][ELF] Allow expressing undefined symbols.
Previously we unconditionally enforced that section references in
symbols in the YAML had a name that was a section name present in the
object, and linked the references to that section. Now, permit empty
section names (already the default, if the `Section` key is not
provided) to indicate SHN_UNDEF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184513 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-21 01:11:48 +00:00

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YAML

# RUN: yaml2obj -format=elf %s | llvm-readobj -symbols - | FileCheck %s
# RUN: yaml2obj -format=elf %s | llvm-objdump -d -no-show-raw-insn - | FileCheck %s --check-prefix=DISASSEMBLY
!ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
Sections:
- Name: .text
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Content: "90EBFE" # x86 machine code
# NOP ; To make main's `Value` non-zero (for testing).
# main:
# JMP -2 ; (infloop)
# This YAML file is a valid relocatable object that,
# when linked and run on x86_64, will go into an
# infloop.
- Name: .symtab
Type: SHT_SYMTAB
Symbols:
Global:
- Name: main
Type: STT_FUNC
Section: .text
Value: 0x1
Size: 2
- Name: undefined_symbol
# CHECK: Symbols [
# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: (0)
# CHECK: Symbol {
# CHECK-NEXT: Name: main
# CHECK-NEXT: Value: 0x1
# CHECK-NEXT: Size: 2
# CHECK: Binding: Global
# CHECK-NEXT: Type: Function
# CHECK: Section: .text
# CHECK: Symbol {
# CHECK: Name: undefined_symbol
# CHECK: Section: (0x0)
# DISASSEMBLY: Disassembly of section .text:
# DISASSEMBLY-NEXT: main:
# DISASSEMBLY-NEXT: 1: jmp -2