llvm/test/Object/yaml2obj-elf-section-invalid-size.yaml

# RUN: not yaml2obj -format=elf -o %t %s 2>&1 | FileCheck %s

!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: EBFE
    AddressAlign: 2

  - Name: .data
    Type: SHT_PROGBITS
    Flags: [ SHF_ALLOC ]
    Content: 0000000000000000
    Size: 2

# CHECK: YAML:17:5: error: Section size must be greater or equal to the content size
# CHECK-NEXT: - Name: .data
# CHECK-NEXT:   ^
# CHECK-NEXT: yaml2obj: Failed to parse YAML file!
[yaml2obj][ELF] Add an optional `Size` field to the YAML section declaration. Now the only method to configure ELF section's content and size is to assign a hexadecimal string to the `Content` field. Unfortunately this way is completely useless when you need to declare a really large section. To solve this problem this patch adds one more optional field `Size` to the `RawContentSection` structure. When yaml2obj generates an ELF file it uses the following algorithm: 1. If both `Content` and `Size` fields are missed create an empty section. 2. If only `Content` field is missed take section length from the `Size` field and fill the section by zero. 3. If only `Size` field is missed create a section using data from the `Content` field. 4. If both `Content` and `Size` fields are provided validate that the `Size` value is not less than size of `Content` data. Than take section length from the `Size`, fill beginning of the section by `Content` and the rest by zero. Examples -------- * Create a section 0x10000 bytes long filled by zero Name: .data Type: SHT_PROGBITS Flags: [ SHF_ALLOC ] Size: 0x10000 * Create a section 0x10000 bytes long starting from 'CA' 'FE' 'BA' 'BE' Name: .data Type: SHT_PROGBITS Flags: [ SHF_ALLOC ] Content: CAFEBABE Size: 0x10000 The patch reviewed by Michael Spencer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208995 91177308-0d34-0410-b5e6-96231b3b80d8 2014-05-16 16:01:00 +00:00			`# RUN: not yaml2obj -format=elf -o %t %s 2>&1 \| FileCheck %s`

			`!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: EBFE`
			`AddressAlign: 2`

			`- Name: .data`
			`Type: SHT_PROGBITS`
			`Flags: [ SHF_ALLOC ]`
			`Content: 0000000000000000`
			`Size: 2`

			`# CHECK: YAML:17:5: error: Section size must be greater or equal to the content size`
			`# CHECK-NEXT: - Name: .data`
			`# CHECK-NEXT: ^`
			`# CHECK-NEXT: yaml2obj: Failed to parse YAML file!`