• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1## Check how llvm-readelf prints sections to segments mapping.
2
3## Check that --section-mapping produces a sections to segments
4## mapping and not anything else.
5# RUN: yaml2obj %s -o %t64.elf
6# RUN: llvm-readelf --section-mapping %t64.elf \
7# RUN:   | FileCheck %s --check-prefix=MAPPING --strict-whitespace --match-full-lines --implicit-check-not={{.}}
8
9#      MAPPING: Section to Segment mapping:
10# MAPPING-NEXT:  Segment Sections...
11# MAPPING-NEXT:   00     .foo.begin .foo.end {{$}}
12# MAPPING-NEXT:   01     .bar.begin .bar.end {{$}}
13# MAPPING-NEXT:   None   .strtab .shstrtab {{$}}
14
15--- !ELF
16FileHeader:
17  Class:      ELFCLASS64
18  Data:       ELFDATA2LSB
19  Type:       ET_EXEC
20  EPhEntSize: [[PHENTSIZE=<none>]]
21Sections:
22  - Name:    .foo.begin
23    Type:    SHT_PROGBITS
24    Flags:   [ SHF_ALLOC ]
25    Address: 0x1000
26    Size:    0x1
27  - Name:    .foo.end
28    Type:    SHT_PROGBITS
29    Flags:   [ SHF_ALLOC ]
30    Size:    0x2
31  - Name:    .bar.begin
32    Type:    SHT_PROGBITS
33    Flags:   [ SHF_ALLOC ]
34    Address: 0x2000
35    Size:    0x3
36  - Name:    .bar.end
37    Type:    SHT_PROGBITS
38    Flags:   [ SHF_ALLOC ]
39    Size:    0x4
40ProgramHeaders:
41## Case 1: an arbitrary segment with sections.
42  - Type:     PT_PHDR
43    Flags:    [ PF_W ]
44    VAddr:    0x1000
45    FirstSec: .foo.begin
46    LastSec:  .foo.end
47## Case 2: another segment with different sections.
48  - Type:     PT_PHDR
49    Flags:    [ PF_X ]
50    VAddr:    0x2000
51    FirstSec: .bar.begin
52    LastSec:  .bar.end
53
54## Check that --section-mapping=false --program-headers produces just program headers.
55# RUN: llvm-readelf --section-mapping=false --program-headers %t64.elf \
56# RUN:   | FileCheck %s --check-prefix=SEC-MAPPING-FALSE --implicit-check-not="Section to Segment mapping:"
57
58# SEC-MAPPING-FALSE: Program Headers:
59
60## Check that only one copy of the section/segment mapping table is produced
61## when both --section-mapping and --program-headers are used.
62# RUN: llvm-readelf --section-mapping --program-headers %t64.elf \
63# RUN:   | FileCheck %s --check-prefix=MAPPING --implicit-check-not="Section to Segment mapping:"
64
65## Check the output when an object has no section headers.
66## RUN: llvm-objcopy --strip-sections %t64.elf %tno-shdrs.o
67## RUN: llvm-readelf --section-mapping %tno-shdrs.o | FileCheck %s --check-prefix=NO-SECHDRS
68
69# NO-SECHDRS:      Section to Segment mapping:
70# NO-SECHDRS-NEXT:  Segment Sections...
71# NO-SECHDRS-NEXT:   00 {{$}}
72# NO-SECHDRS-NEXT:   01 {{$}}
73# NO-SECHDRS-NOT: {{.}}
74
75## Check we report a warning when we are unable to read program headers.
76# RUN: yaml2obj %s -DPHENTSIZE=1 -o %t64-err1.elf
77# RUN: llvm-readelf --section-mapping %t64-err1.elf 2>&1 | \
78# RUN:   FileCheck %s -DFILE=%t64-err1.elf --check-prefix=PHENTSIZE
79
80# PHENTSIZE:      Section to Segment mapping:
81# PHENTSIZE-NEXT:  Segment Sections...
82# PHENTSIZE-NEXT: warning: '[[FILE]]': can't read program headers to build section to segment mapping: invalid e_phentsize: 1
83