mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-11 05:35:11 +00:00
19ab8f850f
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
27 lines
573 B
YAML
27 lines
573 B
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!
|