f343968f5d
It's always hard to remember when to include this file, and when you do include it it's hard to remember what preprocessor check it needs to be behind, and then you further have to remember whether it's windows.h or win32.h which you need to include. This patch changes the name to PosixApi.h, which is more appropriately named, and makes it independent of any preprocessor setting. There's still the issue of people not knowing when to include this, because there's not a well-defined set of things it exposes other than "whatever is missing on Windows", but at least this should make it less painful to fix when problems arise. This patch depends on LLVM revision r278170. llvm-svn: 278177
328 lines
12 KiB
C++
328 lines
12 KiB
C++
//===-- Symbols.cpp ---------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Host/Symbols.h"
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#include "lldb/Core/ArchSpec.h"
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#include "lldb/Core/DataBuffer.h"
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#include "lldb/Core/DataExtractor.h"
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#include "lldb/Core/Log.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/ModuleSpec.h"
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#include "lldb/Core/StreamString.h"
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#include "lldb/Core/Timer.h"
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#include "lldb/Core/UUID.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Utility/SafeMachO.h"
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#include "llvm/Support/FileSystem.h"
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// From MacOSX system header "mach/machine.h"
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typedef int cpu_type_t;
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typedef int cpu_subtype_t;
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using namespace lldb;
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using namespace lldb_private;
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using namespace llvm::MachO;
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#if defined(__APPLE__)
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// Forward declaration of method defined in source/Host/macosx/Symbols.cpp
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int
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LocateMacOSXFilesUsingDebugSymbols
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(
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const ModuleSpec &module_spec,
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ModuleSpec &return_module_spec
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);
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#else
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int
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LocateMacOSXFilesUsingDebugSymbols
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(
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const ModuleSpec &module_spec,
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ModuleSpec &return_module_spec
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) {
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// Cannot find MacOSX files using debug symbols on non MacOSX.
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return 0;
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}
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#endif
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static bool
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FileAtPathContainsArchAndUUID (const FileSpec &file_fspec, const ArchSpec *arch, const lldb_private::UUID *uuid)
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{
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ModuleSpecList module_specs;
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if (ObjectFile::GetModuleSpecifications(file_fspec, 0, 0, module_specs))
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{
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ModuleSpec spec;
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for (size_t i = 0; i < module_specs.GetSize(); ++i)
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{
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assert(module_specs.GetModuleSpecAtIndex(i, spec));
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if ((uuid == NULL || (spec.GetUUIDPtr() && spec.GetUUID() == *uuid)) &&
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(arch == NULL || (spec.GetArchitecturePtr() && spec.GetArchitecture().IsCompatibleMatch(*arch))))
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{
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return true;
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}
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}
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}
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return false;
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}
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static bool
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LocateDSYMInVincinityOfExecutable (const ModuleSpec &module_spec, FileSpec &dsym_fspec)
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{
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Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST);
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const FileSpec *exec_fspec = module_spec.GetFileSpecPtr();
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if (exec_fspec)
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{
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char path[PATH_MAX];
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if (exec_fspec->GetPath(path, sizeof(path)))
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{
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// Make sure the module isn't already just a dSYM file...
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if (strcasestr(path, ".dSYM/Contents/Resources/DWARF") == NULL)
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{
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if (log)
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{
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if (module_spec.GetUUIDPtr() && module_spec.GetUUIDPtr()->IsValid())
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{
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log->Printf ("Searching for dSYM bundle next to executable %s, UUID %s", path, module_spec.GetUUIDPtr()->GetAsString().c_str());
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}
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else
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{
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log->Printf ("Searching for dSYM bundle next to executable %s", path);
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}
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}
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size_t obj_file_path_length = strlen(path);
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::strncat(path, ".dSYM/Contents/Resources/DWARF/", sizeof(path) - strlen(path) - 1);
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::strncat(path, exec_fspec->GetFilename().AsCString(), sizeof(path) - strlen(path) - 1);
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dsym_fspec.SetFile(path, false);
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ModuleSpecList module_specs;
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ModuleSpec matched_module_spec;
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if (dsym_fspec.Exists() &&
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FileAtPathContainsArchAndUUID(dsym_fspec, module_spec.GetArchitecturePtr(), module_spec.GetUUIDPtr()))
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{
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if (log)
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{
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log->Printf ("dSYM with matching UUID & arch found at %s", path);
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}
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return true;
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}
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else
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{
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path[obj_file_path_length] = '\0';
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char *last_dot = strrchr(path, '.');
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while (last_dot != NULL && last_dot[0])
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{
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char *next_slash = strchr(last_dot, '/');
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if (next_slash != NULL)
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{
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*next_slash = '\0';
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::strncat(path, ".dSYM/Contents/Resources/DWARF/", sizeof(path) - strlen(path) - 1);
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::strncat(path, exec_fspec->GetFilename().AsCString(), sizeof(path) - strlen(path) - 1);
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dsym_fspec.SetFile(path, false);
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if (dsym_fspec.Exists() &&
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FileAtPathContainsArchAndUUID(dsym_fspec, module_spec.GetArchitecturePtr(), module_spec.GetUUIDPtr()))
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{
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if (log)
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{
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log->Printf ("dSYM with matching UUID & arch found at %s", path);
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}
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return true;
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}
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else
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{
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*last_dot = '\0';
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char *prev_slash = strrchr(path, '/');
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if (prev_slash != NULL)
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*prev_slash = '\0';
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else
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break;
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}
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}
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else
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{
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break;
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}
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}
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}
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}
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}
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}
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dsym_fspec.Clear();
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return false;
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}
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FileSpec
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LocateExecutableSymbolFileDsym (const ModuleSpec &module_spec)
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{
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const FileSpec *exec_fspec = module_spec.GetFileSpecPtr();
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const ArchSpec *arch = module_spec.GetArchitecturePtr();
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const UUID *uuid = module_spec.GetUUIDPtr();
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Timer scoped_timer (LLVM_PRETTY_FUNCTION,
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"LocateExecutableSymbolFileDsym (file = %s, arch = %s, uuid = %p)",
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exec_fspec ? exec_fspec->GetFilename().AsCString ("<NULL>") : "<NULL>",
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arch ? arch->GetArchitectureName() : "<NULL>",
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(const void*)uuid);
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FileSpec symbol_fspec;
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ModuleSpec dsym_module_spec;
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// First try and find the dSYM in the same directory as the executable or in
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// an appropriate parent directory
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if (LocateDSYMInVincinityOfExecutable (module_spec, symbol_fspec) == false)
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{
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// We failed to easily find the dSYM above, so use DebugSymbols
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LocateMacOSXFilesUsingDebugSymbols (module_spec, dsym_module_spec);
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}
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else
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{
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dsym_module_spec.GetSymbolFileSpec() = symbol_fspec;
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}
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return dsym_module_spec.GetSymbolFileSpec();
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}
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ModuleSpec
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Symbols::LocateExecutableObjectFile (const ModuleSpec &module_spec)
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{
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ModuleSpec result;
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const FileSpec *exec_fspec = module_spec.GetFileSpecPtr();
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const ArchSpec *arch = module_spec.GetArchitecturePtr();
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const UUID *uuid = module_spec.GetUUIDPtr();
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Timer scoped_timer (LLVM_PRETTY_FUNCTION,
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"LocateExecutableObjectFile (file = %s, arch = %s, uuid = %p)",
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exec_fspec ? exec_fspec->GetFilename().AsCString ("<NULL>") : "<NULL>",
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arch ? arch->GetArchitectureName() : "<NULL>",
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(const void*)uuid);
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ModuleSpecList module_specs;
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ModuleSpec matched_module_spec;
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if (exec_fspec &&
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ObjectFile::GetModuleSpecifications(*exec_fspec, 0, 0, module_specs) &&
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module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec))
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{
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result.GetFileSpec() = exec_fspec;
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}
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else
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{
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LocateMacOSXFilesUsingDebugSymbols (module_spec, result);
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}
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return result;
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}
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FileSpec
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Symbols::LocateExecutableSymbolFile (const ModuleSpec &module_spec)
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{
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FileSpec symbol_file_spec = module_spec.GetSymbolFileSpec();
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if (symbol_file_spec.IsAbsolute() && symbol_file_spec.Exists())
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return symbol_file_spec;
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const char *symbol_filename = symbol_file_spec.GetFilename().AsCString();
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if (symbol_filename && symbol_filename[0])
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{
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FileSpecList debug_file_search_paths (Target::GetDefaultDebugFileSearchPaths());
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// Add module directory.
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const ConstString &file_dir = module_spec.GetFileSpec().GetDirectory();
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debug_file_search_paths.AppendIfUnique (FileSpec(file_dir.AsCString("."), true));
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// Add current working directory.
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debug_file_search_paths.AppendIfUnique (FileSpec(".", true));
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#ifndef LLVM_ON_WIN32
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// Add /usr/lib/debug directory.
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debug_file_search_paths.AppendIfUnique (FileSpec("/usr/lib/debug", true));
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#endif // LLVM_ON_WIN32
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std::string uuid_str;
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const UUID &module_uuid = module_spec.GetUUID();
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if (module_uuid.IsValid())
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{
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// Some debug files are stored in the .build-id directory like this:
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// /usr/lib/debug/.build-id/ff/e7fe727889ad82bb153de2ad065b2189693315.debug
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uuid_str = module_uuid.GetAsString("");
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uuid_str.insert (2, 1, '/');
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uuid_str = uuid_str + ".debug";
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}
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size_t num_directories = debug_file_search_paths.GetSize();
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for (size_t idx = 0; idx < num_directories; ++idx)
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{
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FileSpec dirspec = debug_file_search_paths.GetFileSpecAtIndex (idx);
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dirspec.ResolvePath();
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if (!dirspec.Exists() || !dirspec.IsDirectory())
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continue;
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std::vector<std::string> files;
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std::string dirname = dirspec.GetPath();
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files.push_back (dirname + "/" + symbol_filename);
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files.push_back (dirname + "/.debug/" + symbol_filename);
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files.push_back (dirname + "/.build-id/" + uuid_str);
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// Some debug files may stored in the module directory like this:
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// /usr/lib/debug/usr/lib/library.so.debug
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if (!file_dir.IsEmpty())
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files.push_back (dirname + file_dir.AsCString() + "/" + symbol_filename);
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const uint32_t num_files = files.size();
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for (size_t idx_file = 0; idx_file < num_files; ++idx_file)
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{
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const std::string &filename = files[idx_file];
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FileSpec file_spec (filename.c_str(), true);
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if (llvm::sys::fs::equivalent (file_spec.GetPath(), module_spec.GetFileSpec().GetPath()))
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continue;
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if (file_spec.Exists())
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{
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lldb_private::ModuleSpecList specs;
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const size_t num_specs = ObjectFile::GetModuleSpecifications (file_spec, 0, 0, specs);
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assert (num_specs <= 1 && "Symbol Vendor supports only a single architecture");
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if (num_specs == 1)
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{
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ModuleSpec mspec;
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if (specs.GetModuleSpecAtIndex (0, mspec))
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{
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if (mspec.GetUUID() == module_uuid)
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return file_spec;
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}
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}
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}
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}
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}
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}
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return LocateExecutableSymbolFileDsym(module_spec);
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}
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#if !defined (__APPLE__)
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FileSpec
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Symbols::FindSymbolFileInBundle (const FileSpec& symfile_bundle,
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const lldb_private::UUID *uuid,
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const ArchSpec *arch)
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{
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// FIXME
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return FileSpec();
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}
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bool
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Symbols::DownloadObjectAndSymbolFile (ModuleSpec &module_spec, bool force_lookup)
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{
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// Fill in the module_spec.GetFileSpec() for the object file and/or the
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// module_spec.GetSymbolFileSpec() for the debug symbols file.
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return false;
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}
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#endif
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