# RUN: yaml2obj %s -o %t
## The binary used in this test can be built (on OSX) as follows:
## main.c:
## __attribute__((used)) static int a[1021];
## __attribute__((used)) static char b = 1;
## int main() {
## return 0;
## }
## build command:
## clang -fno-exceptions -fno-unwind-tables main.c -o main.exe
## Note, that the variable "b" (whose size is 1) is placed into __DATA,__data section,
## the array "a" (whose size is 4 * 1021 = 4084) is placed into __DATA,__bss and
## __DATA,__bss is 16-byte aligned. In this case the total vmsize narrowly crosses
## the border of one page (4096) and the final value should be equal to 8192.
# RUN: llvm-objcopy %t %t.copy
# RUN: cmp %t %t.copy
## This additionally verifies that the binary created by llvm-objcopy/yaml2obj is valid.
# RUN: llvm-readobj --sections %t.copy
--- !mach-o
FileHeader:
magic: 0xFEEDFACF
cputype: 0x01000007
cpusubtype: 0x80000003
filetype: 0x00000002
ncmds: 15
sizeofcmds: 976
flags: 0x00200085
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: 232
segname: __TEXT
vmaddr: 4294967296
vmsize: 4096
fileoff: 0
filesize: 4096
maxprot: 5
initprot: 5
nsects: 2
flags: 0
Sections:
- sectname: __text
segname: __TEXT
addr: 0x0000000100000FA0
size: 15
offset: 0x00000FA0
align: 4
reloff: 0x00000000
nreloc: 0
flags: 0x80000400
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
content: 554889E531C0C745FC000000005DC3
- sectname: __unwind_info
segname: __TEXT
addr: 0x0000000100000FB0
size: 72
offset: 0x00000FB0
align: 2
reloff: 0x00000000
nreloc: 0
flags: 0x00000000
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
content: 010000001C000000000000001C000000000000001C00000002000000A00F00003400000034000000B00F00000000000034000000030000000C000100100001000000000000000000
- cmd: LC_SEGMENT_64
cmdsize: 232
segname: __DATA
vmaddr: 4294971392
vmsize: 8192
fileoff: 4096
filesize: 4096
maxprot: 3
initprot: 3
nsects: 2
flags: 0
Sections:
- sectname: __data
segname: __DATA
addr: 0x0000000100001000
size: 1
offset: 0x00001000
align: 0
reloff: 0x00000000
nreloc: 0
flags: 0x00000000
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
content: '01'
- sectname: __bss
segname: __DATA
addr: 0x0000000100001010
size: 4084
offset: 0x00000000
align: 4
reloff: 0x00000000
nreloc: 0
flags: 0x00000001
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
- cmd: LC_SEGMENT_64
cmdsize: 72
segname: __LINKEDIT
vmaddr: 4294979584
vmsize: 4096
fileoff: 8192
filesize: 128
maxprot: 1
initprot: 1
nsects: 0
flags: 0
- cmd: LC_DYLD_INFO_ONLY
cmdsize: 48
rebase_off: 0
rebase_size: 0
bind_off: 0
bind_size: 0
weak_bind_off: 0
weak_bind_size: 0
lazy_bind_off: 0
lazy_bind_size: 0
export_off: 8192
export_size: 48
- cmd: LC_SYMTAB
cmdsize: 24
symoff: 8248
nsyms: 2
stroff: 8280
strsize: 40
- cmd: LC_DYSYMTAB
cmdsize: 80
ilocalsym: 0
nlocalsym: 0
iextdefsym: 0
nextdefsym: 1
iundefsym: 1
nundefsym: 1
tocoff: 0
ntoc: 0
modtaboff: 0
nmodtab: 0
extrefsymoff: 0
nextrefsyms: 0
indirectsymoff: 0
nindirectsyms: 0
extreloff: 0
nextrel: 0
locreloff: 0
nlocrel: 0
- cmd: LC_LOAD_DYLINKER
cmdsize: 32
name: 12
Content: '/usr/lib/dyld'
ZeroPadBytes: 7
- cmd: LC_UUID
cmdsize: 24
uuid: 11362E8D-D70B-33B3-96F8-A70ADF2583C4
- cmd: LC_BUILD_VERSION
cmdsize: 32
platform: 1
minos: 658944
sdk: 658944
ntools: 1
Tools:
- tool: 3
version: 34734080
- cmd: LC_SOURCE_VERSION
cmdsize: 16
version: 0
- cmd: LC_MAIN
cmdsize: 24
entryoff: 4000
stacksize: 0
- cmd: LC_LOAD_DYLIB
cmdsize: 56
dylib:
name: 24
timestamp: 2
current_version: 82115073
compatibility_version: 65536
Content: '/usr/lib/libSystem.B.dylib'
ZeroPadBytes: 6
- cmd: LC_FUNCTION_STARTS
cmdsize: 16
dataoff: 8240
datasize: 8
- cmd: LC_DATA_IN_CODE
cmdsize: 16
dataoff: 8248
datasize: 0
LinkEditData:
ExportTrie:
TerminalSize: 0
NodeOffset: 0
Name: ''
Flags: 0x0000000000000000
Address: 0x0000000000000000
Other: 0x0000000000000000
ImportName: ''
Children:
- TerminalSize: 0
NodeOffset: 5
Name: _
Flags: 0x0000000000000000
Address: 0x0000000000000000
Other: 0x0000000000000000
ImportName: ''
Children:
- TerminalSize: 2
NodeOffset: 33
Name: _mh_execute_header
Flags: 0x0000000000000000
Address: 0x0000000000000000
Other: 0x0000000000000000
ImportName: ''
- TerminalSize: 3
NodeOffset: 37
Name: main
Flags: 0x0000000000000000
Address: 0x0000000000000FA0
Other: 0x0000000000000000
ImportName: ''
NameList:
- n_strx: 19
n_type: 0x0F
n_sect: 1
n_desc: 16
n_value: 4294967296
- n_strx: 2
n_type: 0x01
n_sect: 0
n_desc: 256
n_value: 0
StringTable:
- ' '
- dyld_stub_binder
- __mh_execute_header
- ''
...
Codebase Browser
llvm