/* Shared library declarations for GDB, the GNU Debugger.
- Copyright 1992, 1993, 1995, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+
+ Copyright (C) 1992-2022 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef SOLIB_H
#define SOLIB_H
/* Forward decl's for prototypes */
+struct so_list;
struct target_ops;
+struct target_so_ops;
+struct program_space;
-/* Called when we free all symtabs, to free the shared library information
- as well. */
+#include "gdb_bfd.h"
+#include "symfile-add-flags.h"
-#define CLEAR_SOLIB clear_solib
+/* Called when we free all symtabs, to free the shared library information
+ as well. */
extern void clear_solib (void);
-/* Called to add symbols from a shared library to gdb's symbol table. */
-
-#define SOLIB_ADD(filename, from_tty, targ, readsyms) \
- solib_add (filename, from_tty, targ, readsyms)
-
-extern void solib_add (char *, int, struct target_ops *, int);
-
-/* Function to be called when the inferior starts up, to discover the names
- of shared libraries that are dynamically linked, the base addresses to
- which they are linked, and sufficient information to read in their symbols
- at a later time. */
-
-#define SOLIB_CREATE_INFERIOR_HOOK(PID) solib_create_inferior_hook()
-
-/* Function to be called to remove the connection between debugger and
- dynamic linker that was established by SOLIB_CREATE_INFERIOR_HOOK.
- (This operation does not remove shared library information from
- the debugger, as CLEAR_SOLIB does.)
+/* Called to add symbols from a shared library to gdb's symbol table. */
- This functionality is presently not implemented for this target.
- */
-#define SOLIB_REMOVE_INFERIOR_HOOK(PID) (0)
+extern void solib_add (const char *, int, int);
+extern bool solib_read_symbols (struct so_list *, symfile_add_flags);
-extern void solib_create_inferior_hook (void); /* solib.c */
+/* Function to be called when the inferior starts up, to discover the
+ names of shared libraries that are dynamically linked, the base
+ addresses to which they are linked, and sufficient information to
+ read in their symbols at a later time. */
-/* This function is called by the "catch load" command. It allows
- the debugger to be notified by the dynamic linker when a specified
- library file (or any library file, if filename is NULL) is loaded.
+extern void solib_create_inferior_hook (int from_tty);
- Presently, this functionality is not implemented.
- */
-#define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \
- error("catch of library loads/unloads not yet implemented on this platform")
-
-/* This function is called by the "catch unload" command. It allows
- the debugger to be notified by the dynamic linker when a specified
- library file (or any library file, if filename is NULL) is unloaded.
-
- Presently, this functionality is not implemented.
- */
-#define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \
- error("catch of library loads/unloads not yet implemented on this platform")
-
-/* This function returns TRUE if the dynamic linker has just reported
- a load of a library.
-
- This function must be used only when the inferior has stopped in
- the dynamic linker hook, or undefined results are guaranteed.
+/* If ADDR lies in a shared library, return its name. */
- Presently, this functionality is not implemented.
- */
+extern char *solib_name_from_address (struct program_space *, CORE_ADDR);
-/*
- #define SOLIB_HAVE_LOAD_EVENT(pid) \
- error("catch of library loads/unloads not yet implemented on this platform")
- */
+/* Return true if ADDR lies within SOLIB. */
-#define SOLIB_HAVE_LOAD_EVENT(pid) \
-(0)
+extern bool solib_contains_address_p (const struct so_list *, CORE_ADDR);
-/* This function returns a pointer to the string representation of the
- pathname of the dynamically-linked library that has just been loaded.
+/* Return whether the data starting at VADDR, size SIZE, must be kept
+ in a core file for shared libraries loaded before "gcore" is used
+ to be handled correctly when the core file is loaded. This only
+ applies when the section would otherwise not be kept in the core
+ file (in particular, for readonly sections). */
- This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE,
- or undefined results are guaranteed.
+extern bool solib_keep_data_in_core (CORE_ADDR vaddr, unsigned long size);
- This string's contents are only valid immediately after the inferior
- has stopped in the dynamic linker hook, and becomes invalid as soon
- as the inferior is continued. Clients should make a copy of this
- string if they wish to continue the inferior and then access the string.
+/* Return true if PC lies in the dynamic symbol resolution code of the
+ run time loader. */
- Presently, this functionality is not implemented.
- */
+extern bool in_solib_dynsym_resolve_code (CORE_ADDR);
-/*
- #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) \
- error("catch of library loads/unloads not yet implemented on this platform")
- */
+/* Discard symbols that were auto-loaded from shared libraries. */
-#define SOLIB_LOADED_LIBRARY_PATHNAME(pid) \
-(0)
+extern void no_shared_libraries (const char *ignored, int from_tty);
-/* This function returns TRUE if the dynamic linker has just reported
- an unload of a library.
+/* Set the solib operations for GDBARCH to NEW_OPS. */
- This function must be used only when the inferior has stopped in
- the dynamic linker hook, or undefined results are guaranteed.
+extern void set_solib_ops (struct gdbarch *gdbarch,
+ const struct target_so_ops *new_ops);
- Presently, this functionality is not implemented.
- */
-/*
- #define SOLIB_HAVE_UNLOAD_EVENT(pid) \
- error("catch of library loads/unloads not yet implemented on this platform")
- */
+/* Synchronize GDB's shared object list with inferior's.
-#define SOLIB_HAVE_UNLOAD_EVENT(pid) \
-(0)
+ Extract the list of currently loaded shared objects from the
+ inferior, and compare it with the list of shared objects in the
+ current program space's list of shared libraries. Edit
+ so_list_head to bring it in sync with the inferior's new list.
-/* This function returns a pointer to the string representation of the
- pathname of the dynamically-linked library that has just been unloaded.
+ If we notice that the inferior has unloaded some shared objects,
+ free any symbolic info GDB had read about those shared objects.
- This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is TRUE,
- or undefined results are guaranteed.
+ Don't load symbolic info for any new shared objects; just add them
+ to the list, and leave their symbols_loaded flag clear.
- This string's contents are only valid immediately after the inferior
- has stopped in the dynamic linker hook, and becomes invalid as soon
- as the inferior is continued. Clients should make a copy of this
- string if they wish to continue the inferior and then access the string.
+ If FROM_TTY is non-null, feel free to print messages about what
+ we're doing. */
- Presently, this functionality is not implemented.
- */
-/*
- #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) \
- error("catch of library loads/unloads not yet implemented on this platform")
- */
+extern void update_solib_list (int from_tty);
-#define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) \
-(0)
+/* Return true if NAME is the libpthread shared library. */
-/* This function returns TRUE if pc is the address of an instruction that
- lies within the dynamic linker (such as the event hook, or the dld
- itself).
+extern bool libpthread_name_p (const char *name);
- This function must be used only when a dynamic linker event has been
- caught, and the inferior is being stepped out of the hook, or undefined
- results are guaranteed.
+/* Look up symbol from both symbol table and dynamic string table. */
- Presently, this functionality is not implemented.
- */
+extern CORE_ADDR gdb_bfd_lookup_symbol (bfd *abfd,
+ int (*match_sym) (const asymbol *,
+ const void *),
+ const void *data);
-/*
- #define SOLIB_IN_DYNAMIC_LINKER(pid,pc) \
- error("catch of library loads/unloads not yet implemented on this platform")
- */
+/* Look up symbol from symbol table. */
-#define SOLIB_IN_DYNAMIC_LINKER(pid,pc) \
-(0)
+extern CORE_ADDR gdb_bfd_lookup_symbol_from_symtab (bfd *abfd,
+ int (*match_sym)
+ (const asymbol *,
+ const void *),
+ const void *data);
-/* This function must be called when the inferior is killed, and the program
- restarted. This is not the same as CLEAR_SOLIB, in that it doesn't discard
- any symbol tables.
+/* Scan for DESIRED_DYNTAG in .dynamic section of ABFD. If DESIRED_DYNTAG is
+ found, 1 is returned and the corresponding PTR and PTR_ADDR are set. */
- Presently, this functionality is not implemented.
- */
-#define SOLIB_RESTART() \
- (0)
+extern int gdb_bfd_scan_elf_dyntag (const int desired_dyntag, bfd *abfd,
+ CORE_ADDR *ptr, CORE_ADDR *ptr_addr);
-/* If we can't set a breakpoint, and it's in a shared library, just
- disable it. */
+/* If FILENAME refers to an ELF shared object then attempt to return the
+ string referred to by its DT_SONAME tag. */
-#define DISABLE_UNSETTABLE_BREAK(addr) (solib_address(addr) != NULL)
+extern gdb::unique_xmalloc_ptr<char> gdb_bfd_read_elf_soname
+ (const char *filename);
-extern char *solib_address (CORE_ADDR); /* solib.c */
+/* Enable or disable optional solib event breakpoints as appropriate. */
-/* If ADDR lies in a shared library, return its name. */
+extern void update_solib_breakpoints (void);
-#define PC_SOLIB(addr) solib_address (addr)
+/* Handle an solib event by calling solib_add. */
-/* Return 1 if PC lies in the dynamic symbol resolution code of the
- run time loader. */
+extern void handle_solib_event (void);
-#define IN_SOLIB_DYNSYM_RESOLVE_CODE(pc) in_solib_dynsym_resolve_code (pc)
+/* Associate SONAME with BUILD_ID in ABFD's registry so that it can be
+ retrieved with get_cbfd_soname_build_id. */
-extern int in_solib_dynsym_resolve_code (CORE_ADDR); /* solib.c */
+extern void set_cbfd_soname_build_id (gdb_bfd_ref_ptr abfd,
+ const char *soname,
+ const bfd_build_id *build_id);
-/* Discard symbols that were auto-loaded from shared libraries. */
+/* If SONAME had a build-id associated with it in ABFD's registry by a
+ previous call to set_cbfd_soname_build_id then return the build-id
+ as a NULL-terminated hex string. */
-extern void no_shared_libraries (char *ignored, int from_tty);
+extern gdb::unique_xmalloc_ptr<char> get_cbfd_soname_build_id
+ (gdb_bfd_ref_ptr abfd, const char *soname);
#endif /* SOLIB_H */
projects / binutils-gdb.git / blobdiff