Retrieve the deployment target when retrieving an object file's triple.

Getting the deployment target can be significant information when
rebuilding clang modules since availability information could depend
on it.

rdar://problem/40039633

Differential Revision: https://reviews.llvm.org/D46669

llvm-svn: 332067
This commit is contained in:
Adrian Prantl 2018-05-11 00:41:20 +00:00
parent f9fc9513bf
commit 9702c963ab
2 changed files with 238 additions and 12 deletions

View File

@ -0,0 +1,205 @@
# RUN: yaml2obj %s > %t.out
# RUN: lldb-test symbols %t.out | FileCheck %s
# REQUIRES: darwin
# Test that the deployment target is parsed from the load commands.
# CHECK: x86_64-apple-macosx10.9.0
--- !mach-o
FileHeader:
magic: 0xFEEDFACF
cputype: 0x01000007
cpusubtype: 0x80000003
filetype: 0x00000002
ncmds: 14
sizeofcmds: 728
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: 7
initprot: 5
nsects: 2
flags: 0
Sections:
- sectname: __text
segname: __TEXT
addr: 0x0000000100000FB0
size: 8
offset: 0x00000FB0
align: 0
reloff: 0x00000000
nreloc: 0
flags: 0x80000400
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
- sectname: __unwind_info
segname: __TEXT
addr: 0x0000000100000FB8
size: 72
offset: 0x00000FB8
align: 2
reloff: 0x00000000
nreloc: 0
flags: 0x00000000
reserved1: 0x00000000
reserved2: 0x00000000
reserved3: 0x00000000
- cmd: LC_SEGMENT_64
cmdsize: 72
segname: __LINKEDIT
vmaddr: 4294971392
vmsize: 4096
fileoff: 4096
filesize: 152
maxprot: 7
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: 4096
export_size: 48
- cmd: LC_SYMTAB
cmdsize: 24
symoff: 4152
nsyms: 3
stroff: 4200
strsize: 48
- cmd: LC_DYSYMTAB
cmdsize: 80
ilocalsym: 0
nlocalsym: 0
iextdefsym: 0
nextdefsym: 2
iundefsym: 2
nundefsym: 1
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extrefsymoff: 0
nextrefsyms: 0
indirectsymoff: 0
nindirectsyms: 0
extreloff: 0
nextrel: 0
locreloff: 0
nlocrel: 0
- cmd: LC_LOAD_DYLINKER
cmdsize: 32
name: 12
PayloadString: /usr/lib/dyld
ZeroPadBytes: 7
- cmd: LC_UUID
cmdsize: 24
uuid: E75E737C-4FB3-312D-9B17-10987F48F957
- cmd: LC_VERSION_MIN_MACOSX
cmdsize: 16
version: 657664
sdk: 658944
- cmd: LC_SOURCE_VERSION
cmdsize: 16
version: 0
- cmd: LC_MAIN
cmdsize: 24
entryoff: 4016
stacksize: 0
- cmd: LC_LOAD_DYLIB
cmdsize: 56
dylib:
name: 24
timestamp: 2
current_version: 82102276
compatibility_version: 65536
PayloadString: /usr/lib/libSystem.B.dylib
ZeroPadBytes: 6
- cmd: LC_FUNCTION_STARTS
cmdsize: 16
dataoff: 4144
datasize: 8
- cmd: LC_DATA_IN_CODE
cmdsize: 16
dataoff: 4152
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: 0x0000000000000FB0
Other: 0x0000000000000000
ImportName: ''
NameList:
- n_strx: 2
n_type: 0x0F
n_sect: 1
n_desc: 16
n_value: 4294967296
- n_strx: 22
n_type: 0x0F
n_sect: 1
n_desc: 0
n_value: 4294971312
- n_strx: 28
n_type: 0x01
n_sect: 0
n_desc: 256
n_value: 0
StringTable:
- ' '
- __mh_execute_header
- _main
- dyld_stub_binder
- ''
- ''
- ''
...

View File

@ -4819,7 +4819,7 @@ void ObjectFileMachO::Dump(Stream *s) {
GetArchitecture(header_arch);
*s << ", file = '" << m_file
<< "', arch = " << header_arch.GetArchitectureName() << "\n";
<< "', triple = " << header_arch.GetTriple().getTriple() << "\n";
SectionList *sections = GetSectionList();
if (sections)
@ -4867,6 +4867,21 @@ bool ObjectFileMachO::GetUUID(const llvm::MachO::mach_header &header,
return false;
}
static const char *GetOSName(uint32_t cmd) {
switch (cmd) {
case llvm::MachO::LC_VERSION_MIN_IPHONEOS:
return "ios";
case llvm::MachO::LC_VERSION_MIN_MACOSX:
return "macosx";
case llvm::MachO::LC_VERSION_MIN_TVOS:
return "tvos";
case llvm::MachO::LC_VERSION_MIN_WATCHOS:
return "watchos";
default:
llvm_unreachable("unexpected LC_VERSION load command");
}
}
bool ObjectFileMachO::GetArchitecture(const llvm::MachO::mach_header &header,
const lldb_private::DataExtractor &data,
lldb::offset_t lc_offset,
@ -4905,23 +4920,29 @@ bool ObjectFileMachO::GetArchitecture(const llvm::MachO::mach_header &header,
if (data.GetU32(&offset, &load_cmd, 2) == NULL)
break;
uint32_t major, minor, patch;
struct version_min_command version_min;
llvm::SmallString<16> os_name;
llvm::raw_svector_ostream os(os_name);
switch (load_cmd.cmd) {
case llvm::MachO::LC_VERSION_MIN_IPHONEOS:
triple.setOS(llvm::Triple::IOS);
return true;
case llvm::MachO::LC_VERSION_MIN_MACOSX:
triple.setOS(llvm::Triple::MacOSX);
return true;
case llvm::MachO::LC_VERSION_MIN_TVOS:
triple.setOS(llvm::Triple::TvOS);
return true;
case llvm::MachO::LC_VERSION_MIN_WATCHOS:
triple.setOS(llvm::Triple::WatchOS);
if (load_cmd.cmdsize != sizeof(version_min))
break;
data.ExtractBytes(cmd_offset,
sizeof(version_min), data.GetByteOrder(),
&version_min);
major = version_min.version >> 16;
minor = (version_min.version >> 8) & 0xffu;
patch = version_min.version & 0xffu;
os << GetOSName(load_cmd.cmd) << major << '.' << minor << '.'
<< patch;
triple.setOSName(os.str());
return true;
default:
break;
}