sections.yaml
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## This file contains test cases for generating sections in Mach-O object files.
## a) Test that yaml2obj emits sections and obj2yaml converts them back.
# RUN: yaml2obj --docnum=1 %s | obj2yaml | FileCheck %s
--- !mach-o
FileHeader:
magic: 0xFEEDFACF
cputype: 0x01000007
cpusubtype: 0x80000003
filetype: 0x00000002
ncmds: 16
sizeofcmds: 1408
flags: 0x00218085
reserved: 0x00000000
LoadCommands:
- cmd: LC_SEGMENT_64
cmdsize: 72
segname: __PAGEZERO
vmaddr: 0
vmsize: 4294967296
fileoff: 0
filesize: 0
maxprot: 0
initprot: 0
nsects: 0
flags: 0
- cmd: LC_SEGMENT_64
cmdsize: 552
segname: __TEXT
vmaddr: 4294967296
vmsize: 8192
fileoff: 0
filesize: 8192
maxprot: 7
initprot: 5
nsects: 6
flags: 0
Sections:
- sectname: __text
segname: __TEXT
addr: 0x0000000100001160
size: 3099
offset: 0x00001160
align: 4
reloff: 0x00000000
nreloc: 0
flags: 0x80000400
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
- sectname: __stubs
segname: __TEXT
addr: 0x0000000100001D7C
size: 90
offset: 0x00001D7C
align: 1
reloff: 0x00000000
nreloc: 0
flags: 0x80000408
reserved1: 0x00000000
reserved2: 0x00000006
reserved3: 0x00000000
- sectname: __stub_helper
segname: __TEXT
addr: 0x0000000100001DD8
size: 166
offset: 0x00001DD8
align: 2
reloff: 0x00000000
nreloc: 0
flags: 0x80000400
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
- sectname: __gcc_except_tab
segname: __TEXT
addr: 0x0000000100001E80
size: 240
offset: 0x00001E80
align: 2
reloff: 0x00000000
nreloc: 0
flags: 0x00000000
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
- sectname: __cstring
segname: __TEXT
addr: 0x0000000100001F70
size: 15
offset: 0x00001F70
align: 0
reloff: 0x00000000
nreloc: 0
flags: 0x00000002
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
- sectname: __unwind_info
segname: __TEXT
addr: 0x0000000100001F80
size: 120
offset: 0x00001F80
align: 2
reloff: 0x00000000
nreloc: 0
flags: 0x00000000
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
- cmd: LC_SEGMENT_64
cmdsize: 312
segname: __DATA
vmaddr: 4294975488
vmsize: 4096
fileoff: 8192
filesize: 4096
maxprot: 7
initprot: 3
nsects: 3
flags: 0
Sections:
- sectname: __got
segname: __DATA
addr: 0x0000000100002000
size: 24
offset: 0x00002000
align: 3
reloff: 0x00000000
nreloc: 0
flags: 0x00000006
reserved1: 0x0000000F
reserved2: 0x00000000
reserved3: 0x00000000
- sectname: __nl_symbol_ptr
segname: __DATA
addr: 0x0000000100002018
size: 16
offset: 0x00002018
align: 3
reloff: 0x00000000
nreloc: 0
flags: 0x00000006
reserved1: 0x00000012
reserved2: 0x00000000
reserved3: 0x00000000
- sectname: __la_symbol_ptr
segname: __DATA
addr: 0x0000000100002028
size: 120
offset: 0x00002028
align: 3
reloff: 0x00000000
nreloc: 0
flags: 0x00000007
reserved1: 0x00000014
reserved2: 0x00000000
reserved3: 0x00000000
- cmd: LC_SEGMENT_64
cmdsize: 72
segname: __LINKEDIT
vmaddr: 4294979584
vmsize: 4096
fileoff: 12288
filesize: 2508
maxprot: 7
initprot: 1
nsects: 0
flags: 0
- cmd: LC_DYLD_INFO_ONLY
cmdsize: 48
rebase_off: 12288
rebase_size: 8
bind_off: 12296
bind_size: 96
weak_bind_off: 0
weak_bind_size: 0
lazy_bind_off: 12392
lazy_bind_size: 624
export_off: 13016
export_size: 48
- cmd: LC_SYMTAB
cmdsize: 24
symoff: 13080
nsyms: 30
stroff: 13700
strsize: 1096
- cmd: LC_DYSYMTAB
cmdsize: 80
ilocalsym: 0
nlocalsym: 9
iextdefsym: 9
nextdefsym: 2
iundefsym: 11
nundefsym: 19
tocoff: 0
ntoc: 0
modtaboff: 0
nmodtab: 0
extrefsymoff: 0
nextrefsyms: 0
indirectsymoff: 13560
nindirectsyms: 35
extreloff: 0
nextrel: 0
locreloff: 0
nlocrel: 0
- cmd: LC_LOAD_DYLINKER
cmdsize: 32
name: 12
- cmd: LC_UUID
cmdsize: 24
uuid: 461A1B28-822F-3F38-B670-645419E636F5
- cmd: LC_VERSION_MIN_MACOSX
cmdsize: 16
version: 658176
sdk: 658176
- cmd: LC_SOURCE_VERSION
cmdsize: 16
version: 0
- cmd: LC_MAIN
cmdsize: 24
entryoff: 4448
stacksize: 0
- cmd: LC_LOAD_DYLIB
cmdsize: 48
dylib:
name: 24
timestamp: 2
current_version: 7864576
compatibility_version: 65536
- cmd: LC_LOAD_DYLIB
cmdsize: 56
dylib:
name: 24
timestamp: 2
current_version: 80349697
compatibility_version: 65536
- cmd: LC_FUNCTION_STARTS
cmdsize: 16
dataoff: 13064
datasize: 16
- cmd: LC_DATA_IN_CODE
cmdsize: 16
dataoff: 13080
datasize: 0
...
#CHECK: - cmd: LC_SEGMENT_64
#CHECK: segname: __PAGEZERO
#CHECK: - cmd: LC_SEGMENT_64
#CHECK: segname: __TEXT
#CHECK: Sections:
#CHECK: - sectname: __text
#CHECK: segname: __TEXT
#CHECK: addr: 0x0000000100001160
#CHECK: size: 3099
#CHECK: offset: 0x00001160
#CHECK: align: 4
#CHECK: reloff: 0x00000000
#CHECK: nreloc: 0
#CHECK: flags: 0x80000400
#CHECK: reserved1: 0x00000000
#CHECK: reserved2: 0x00000000
#CHECK: reserved3: 0x00000000
#CHECK: - sectname: __stubs
#CHECK: segname: __TEXT
#CHECK: - sectname: __stub_helper
#CHECK: segname: __TEXT
#CHECK: - sectname: __gcc_except_tab
#CHECK: segname: __TEXT
#CHECK: - sectname: __cstring
#CHECK: segname: __TEXT
#CHECK: - sectname: __unwind_info
#CHECK: segname: __TEXT
#CHECK: - cmd: LC_SEGMENT_64
#CHECK: segname: __DATA
#CHECK: Sections:
#CHECK: - sectname: __got
#CHECK: segname: __DATA
#CHECK: - sectname: __nl_symbol_ptr
#CHECK: segname: __DATA
#CHECK: - sectname: __la_symbol_ptr
#CHECK: segname: __DATA
## b) Test that yaml2obj emits an error message if we specify an offset that
## makes the current section and the previous one overlap.
# RUN: not yaml2obj --docnum=2 %s -o %t2.macho 2>&1 | FileCheck %s --check-prefix=OVERLAP
# OVERLAP: yaml2obj: error: wrote too much data somewhere, section offsets don't line up
--- !mach-o
FileHeader:
magic: 0xFEEDFACF
cputype: 0x01000007
cpusubtype: 0x80000003
filetype: 0x00000002
ncmds: 1
sizeofcmds: 1024
flags: 0x00000000
reserved: 0x00000000
LoadCommands:
- cmd: LC_SEGMENT_64
cmdsize: 0xff
segname: __SEC
vmaddr: 0
vmsize: 0
fileoff: 0
filesize: 0
maxprot: 0
initprot: 0
nsects: 2
flags: 0
Sections:
- sectname: __sec1
segname: __SEC
addr: 0x0000000000000000
size: 2
offset: 0x00000000
align: 0
reloff: 0x00000000
nreloc: 0
flags: 0x00000000
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
- sectname: __sec2
segname: __SEC
addr: 0x0000000000000000
size: 2
offset: 0x00000001 ## Specify an offset that makes __sec1 and __sec2 overlap.
align: 1
reloff: 0x00000000
nreloc: 0
flags: 0x00000000
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000