segment-test-remove-section.test
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# This test is checking to ensure that if a section is removed in the presence
# of a segment that the segment maintains its shape and properties and that any
# section inside that segment maintains the relative positioning it had in the
# segment. Note worthy is that .text3 keeps its offset despite it being
# possible to place it after .text when .text2 is removed.
# RUN: yaml2obj %s -o %t
# RUN: llvm-objcopy -R .text2 %t %t2
# RUN: llvm-readobj --file-headers --program-headers --sections %t2 | FileCheck %s
# RUN: od -t x1 -j 8192 -N 4 %t2 | FileCheck %s --check-prefix=DATA
!ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Sections:
- Name: .text
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Address: 0x1000
AddressAlign: 0x1000
Size: 4096
- Name: .text2
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Address: 0x2000
AddressAlign: 0x1000
Size: 4096
Content: "DEADBEEF"
- Name: .text3
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Address: 0x3000
AddressAlign: 0x1000
Size: 4096
ProgramHeaders:
- Type: PT_LOAD
Flags: [ PF_X, PF_R ]
Sections:
- Section: .text
- Section: .text2
- Section: .text3
## TODO (grimar): without the following line (i.e. without an empty symbol table),
## llvm-objcopy adds an empty .strtab section. It doesn't look correct.
Symbols: []
# Make sure that when we remove a section we overwrite it with zeros
# DATA: {{^[^[:blank:]]+}} 00 00 00 00
#CHECK: SectionHeaderCount: 4
# CHECK: Sections [
# CHECK: Section {
# CHECK-NEXT: Index: 0
# CHECK-NEXT: Name: (0)
# CHECK-NEXT: Type: SHT_NULL (0x0)
# CHECK-NEXT: Flags [ (0x0)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x0
# CHECK-NEXT: Offset:
# CHECK-NEXT: Size:
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 0
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 1
# CHECK-NEXT: Name: .text
# CHECK-NEXT: Type: SHT_PROGBITS
# CHECK-NEXT: Flags [
# CHECK-NEXT: SHF_ALLOC
# CHECK-NEXT: SHF_EXECINSTR
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x1000
# CHECK-NEXT: Offset: 0x1000
# CHECK-NEXT: Size:
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4096
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .text3
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [
# CHECK-NEXT: SHF_ALLOC
# CHECK-NEXT: SHF_EXECINSTR
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x3000
# CHECK-NEXT: Offset: 0x3000
# CHECK-NEXT: Size:
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4096
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 3
# CHECK-NEXT: Name: .shstrtab
# CHECK-NEXT: Type: SHT_STRTAB (0x3)
# CHECK-NEXT: Flags [ (0x0)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x0
# CHECK-NEXT: Offset:
# CHECK-NEXT: Size:
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 1
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: ]
#CHECK: ProgramHeaders [
#CHECK-NEXT: ProgramHeader {
#CHECK-NEXT: Type: PT_LOAD (0x1)
#CHECK-NEXT: Offset: 0x1000
#CHECK-NEXT: VirtualAddress: 0x0
#CHECK-NEXT: PhysicalAddress: 0x0
#CHECK-NEXT: FileSize: 12288
#CHECK-NEXT: MemSize: 12288
#CHECK-NEXT: Flags [ (0x5)
#CHECK-NEXT: PF_R (0x4)
#CHECK-NEXT: PF_X (0x1)
#CHECK-NEXT: ]
#CHECK-NEXT: Alignment: 4096
#CHECK-NEXT: }
#CHECK-NEXT:]