llvm-project/lldb/source/Utility/StringExtractor.h

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//===-- StringExtractor.h ---------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef utility_StringExtractor_h_
#define utility_StringExtractor_h_
// C Includes
// C++ Includes
#include <string>
#include <stdint.h>
// Other libraries and framework includes
// Project includes
class StringExtractor
{
public:
enum {
BigEndian = 0,
LittleEndian = 1
};
//------------------------------------------------------------------
// Constructors and Destructors
//------------------------------------------------------------------
StringExtractor();
StringExtractor(const char *packet_cstr);
StringExtractor(const StringExtractor& rhs);
virtual ~StringExtractor();
//------------------------------------------------------------------
// Operators
//------------------------------------------------------------------
const StringExtractor&
operator=(const StringExtractor& rhs);
// Returns true if the file position is still valid for the data
// contained in this string extractor object.
bool
IsGood() const
{
return m_index != UINT32_MAX;
}
uint32_t
GetFilePos () const
{
return m_index;
}
void
SetFilePos (uint32_t idx)
{
m_index = idx;
}
void
Clear ()
{
m_packet.clear();
m_index = 0;
}
std::string &
GetStringRef ()
{
return m_packet;
}
bool
Empty()
{
return m_packet.empty();
}
uint32_t
GetBytesLeft ()
{
if (m_index < m_packet.size())
return m_packet.size() - m_index;
return 0;
}
char
GetChar (char fail_value = '\0');
int8_t
GetHexS8 (int8_t fail_value = 0);
uint8_t
GetHexU8 (uint8_t fail_value = 0);
bool
GetNameColonValue (std::string &name, std::string &value);
Many improvements to the Platform base class and subclasses. The base Platform class now implements the Host functionality for a lot of things that make sense by default so that subclasses can check: int PlatformSubclass::Foo () { if (IsHost()) return Platform::Foo (); // Let the platform base class do the host specific stuff // Platform subclass specific code... int result = ... return result; } Added new functions to the platform: virtual const char *Platform::GetUserName (uint32_t uid); virtual const char *Platform::GetGroupName (uint32_t gid); The user and group names are cached locally so that remote platforms can avoid sending packets multiple times to resolve this information. Added the parent process ID to the ProcessInfo class. Added a new ProcessInfoMatch class which helps us to match processes up and changed the Host layer over to using this new class. The new class allows us to search for processs: 1 - by name (equal to, starts with, ends with, contains, and regex) 2 - by pid 3 - And further check for parent pid == value, uid == value, gid == value, euid == value, egid == value, arch == value, parent == value. This is all hookup up to the "platform process list" command which required adding dumping routines to dump process information. If the Host class implements the process lookup routines, you can now lists processes on your local machine: machine1.foo.com % lldb (lldb) platform process list PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME ====== ====== ========== ========== ========== ========== ======================== ============================ 99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge 94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker 94852 244 username usergroup username usergroup x86_64-apple-darwin Safari 94727 244 username usergroup username usergroup x86_64-apple-darwin Xcode 92742 92710 username usergroup username usergroup i386-apple-darwin debugserver This of course also works remotely with the lldb-platform: machine1.foo.com % lldb-platform --listen 1234 machine2.foo.com % lldb (lldb) platform create remote-macosx Platform: remote-macosx Connected: no (lldb) platform connect connect://localhost:1444 Platform: remote-macosx Triple: x86_64-apple-darwin OS Version: 10.6.7 (10J869) Kernel: Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386 Hostname: machine1.foo.com Connected: yes (lldb) platform process list PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME ====== ====== ========== ========== ========== ========== ======================== ============================ 99556 244 username usergroup username usergroup x86_64-apple-darwin trustevaluation 99548 65539 username usergroup username usergroup x86_64-apple-darwin lldb 99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge 94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker 94852 244 username usergroup username usergroup x86_64-apple-darwin Safari The lldb-platform implements everything with the Host:: layer, so this should "just work" for linux. I will probably be adding more stuff to the Host layer for launching processes and attaching to processes so that this support should eventually just work as well. Modified the target to be able to be created with an architecture that differs from the main executable. This is needed for iOS debugging since we can have an "armv6" binary which can run on an "armv7" machine, so we want to be able to do: % lldb (lldb) platform create remote-ios (lldb) file --arch armv7 a.out Where "a.out" is an armv6 executable. The platform then can correctly decide to open all "armv7" images for all dependent shared libraries. Modified the disassembly to show the current PC value. Example output: (lldb) disassemble --frame a.out`main: 0x1eb7: pushl %ebp 0x1eb8: movl %esp, %ebp 0x1eba: pushl %ebx 0x1ebb: subl $20, %esp 0x1ebe: calll 0x1ec3 ; main + 12 at test.c:18 0x1ec3: popl %ebx -> 0x1ec4: calll 0x1f12 ; getpid 0x1ec9: movl %eax, 4(%esp) 0x1ecd: leal 199(%ebx), %eax 0x1ed3: movl %eax, (%esp) 0x1ed6: calll 0x1f18 ; printf 0x1edb: leal 213(%ebx), %eax 0x1ee1: movl %eax, (%esp) 0x1ee4: calll 0x1f1e ; puts 0x1ee9: calll 0x1f0c ; getchar 0x1eee: movl $20, (%esp) 0x1ef5: calll 0x1e6a ; sleep_loop at test.c:6 0x1efa: movl $12, %eax 0x1eff: addl $20, %esp 0x1f02: popl %ebx 0x1f03: leave 0x1f04: ret This can be handy when dealing with the new --line options that was recently added: (lldb) disassemble --line a.out`main + 13 at test.c:19 18 { -> 19 printf("Process: %i\n\n", getpid()); 20 puts("Press any key to continue..."); getchar(); -> 0x1ec4: calll 0x1f12 ; getpid 0x1ec9: movl %eax, 4(%esp) 0x1ecd: leal 199(%ebx), %eax 0x1ed3: movl %eax, (%esp) 0x1ed6: calll 0x1f18 ; printf Modified the ModuleList to have a lookup based solely on a UUID. Since the UUID is typically the MD5 checksum of a binary image, there is no need to give the path and architecture when searching for a pre-existing image in an image list. Now that we support remote debugging a bit better, our lldb_private::Module needs to be able to track what the original path for file was as the platform knows it, as well as where the file is locally. The module has the two following functions to retrieve both paths: const FileSpec &Module::GetFileSpec () const; const FileSpec &Module::GetPlatformFileSpec () const; llvm-svn: 128563
2011-03-31 02:16:51 +08:00
uint32_t
GetU32 (uint32_t fail_value, int base = 0);
uint32_t
GetHexMaxU32 (bool little_endian, uint32_t fail_value);
uint64_t
GetHexMaxU64 (bool little_endian, uint64_t fail_value);
size_t
GetHexBytes (void *dst, size_t dst_len, uint8_t fail_fill_value);
uint64_t
GetHexWithFixedSize (uint32_t byte_size, bool little_endian, uint64_t fail_value);
size_t
GetHexByteString (std::string &str);
const char *
Peek ()
{
if (m_index < m_packet.size())
return m_packet.c_str() + m_index;
return NULL;
}
protected:
//------------------------------------------------------------------
// For StringExtractor only
//------------------------------------------------------------------
std::string m_packet; // The string in which to extract data.
uint32_t m_index; // When extracting data from a packet, this index
// will march along as things get extracted. If set
// to UINT32_MAX the end of the packet data was
// reached when decoding information
uint32_t
GetNumHexASCIICharsAtFilePos (uint32_t max = UINT32_MAX) const;
};
#endif // utility_StringExtractor_h_