test/tools/llvm-readobj/ELF/gnu-section-mapping.test

## Check how llvm-readelf prints sections to segments mapping.

## Check that --section-mapping produces a sections to segments
## mapping and not anything else.
# RUN: yaml2obj %s -o %t64.elf
# RUN: llvm-readelf --section-mapping %t64.elf \
# RUN:   | FileCheck %s --check-prefix=MAPPING --strict-whitespace --match-full-lines --implicit-check-not={{.}}

#      MAPPING: Section to Segment mapping:
# MAPPING-NEXT:  Segment Sections...
# MAPPING-NEXT:   00     .foo.begin .foo.end {{$}}
# MAPPING-NEXT:   01     .bar.begin .bar.end {{$}}
# MAPPING-NEXT:   None   .strtab .shstrtab {{$}}

--- !ELF
FileHeader:
  Class:      ELFCLASS64
  Data:       ELFDATA2LSB
  Type:       ET_EXEC
  EPhEntSize: [[PHENTSIZE=<none>]]
Sections:
  - Name:    .foo.begin
    Type:    SHT_PROGBITS
    Flags:   [ SHF_ALLOC ]
    Address: 0x1000
    Size:    0x1
  - Name:    .foo.end
    Type:    SHT_PROGBITS
    Flags:   [ SHF_ALLOC ]
    Size:    0x2
  - Name:    .bar.begin
    Type:    SHT_PROGBITS
    Flags:   [ SHF_ALLOC ]
    Address: 0x2000
    Size:    0x3
  - Name:    .bar.end
    Type:    SHT_PROGBITS
    Flags:   [ SHF_ALLOC ]
    Size:    0x4
ProgramHeaders:
## Case 1: an arbitrary segment with sections.
  - Type:     PT_PHDR
    Flags:    [ PF_W ]
    VAddr:    0x1000
    FirstSec: .foo.begin
    LastSec:  .foo.end
## Case 2: another segment with different sections.
  - Type:     PT_PHDR
    Flags:    [ PF_X ]
    VAddr:    0x2000
    FirstSec: .bar.begin
    LastSec:  .bar.end

## Check that --section-mapping=false --program-headers produces just program headers.
# RUN: llvm-readelf --section-mapping=false --program-headers %t64.elf \
# RUN:   | FileCheck %s --check-prefix=SEC-MAPPING-FALSE --implicit-check-not="Section to Segment mapping:"

# SEC-MAPPING-FALSE: Program Headers:

## Check that only one copy of the section/segment mapping table is produced
## when both --section-mapping and --program-headers are used.
# RUN: llvm-readelf --section-mapping --program-headers %t64.elf \
# RUN:   | FileCheck %s --check-prefix=MAPPING --implicit-check-not="Section to Segment mapping:"

## Check the output when an object has no section headers.
## RUN: llvm-objcopy --strip-sections %t64.elf %tno-shdrs.o
## RUN: llvm-readelf --section-mapping %tno-shdrs.o | FileCheck %s --check-prefix=NO-SECHDRS

# NO-SECHDRS:      Section to Segment mapping:
# NO-SECHDRS-NEXT:  Segment Sections...
# NO-SECHDRS-NEXT:   00 {{$}}
# NO-SECHDRS-NEXT:   01 {{$}}
# NO-SECHDRS-NOT: {{.}}

## Check we report a warning when we are unable to read program headers.
# RUN: yaml2obj %s -DPHENTSIZE=1 -o %t64-err1.elf
# RUN: llvm-readelf --section-mapping %t64-err1.elf 2>&1 | \
# RUN:   FileCheck %s -DFILE=%t64-err1.elf --check-prefix=PHENTSIZE

# PHENTSIZE:      Section to Segment mapping:
# PHENTSIZE-NEXT:  Segment Sections...
# PHENTSIZE-NEXT: warning: '[[FILE]]': can't read program headers to build section to segment mapping: invalid e_phentsize: 1