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info files, info target info files and info target are
synonymous; both commands print the current
target (see Chapter 13 (page 133)), including the
names of the executable and core dump files
currently in use by GDB, and the files from which
symbols were loaded. Both the commands list
all possible targets rather than the current targets.
All file-specifying commands allow both absolute and relative file names as arguments.
GDB always converts the file name to an absolute file name and remembers it that way.
GDB automatically loads symbol definitions from shared libraries when you use the
run command, or when you examine a core file. (Before you issue the run command,
GDB does not understand references to a function in a shared library, however ―
unless you are debugging a core file).
On HP-UX, if the program loads a library explicitly, GDB automatically loads the
symbols at the time of the shl_load call. See “Breakpoints” (page 51), for more
information.
info share, info
sharedlibrary
Print the names of the shared libraries which are
currently loaded.
sharedlibrary regex, share
regex
Load shared object library symbols for files matching a
Unix regular expression. As with files loaded
automatically, it only loads shared libraries required by
your program for a core file or after typing run. If regex
is omitted all shared libraries required by your program
are loaded.
On HP-UX systems, GDB detects the loading of a shared library and automatically
reads in symbols from the newly loaded library, up to a threshold that is initially set
but that you can modify if you wish.
Beyond that threshold, symbols from shared libraries must be explicitly loaded. To
load these symbols, use the command sharedlibrary filename. The base address
of the shared library is determined automatically by GDB and need not be specified.
To display or set the threshold, use the commands:
set auto-solib-add
threshold
Set the autoloading size threshold, in megabytes.
If threshold is nonzero, symbols from all
shared object libraries will be loaded
automatically when the inferior begins execution
or when the dynamic linker informs GDB that a
new library has been loaded, until the symbol
table of the program and libraries exceeds this
threshold. Otherwise, symbols must be loaded
manually, using the sharedlibrary command.
The default threshold is 100 megabytes.
12.1 Commands to specify files 129