X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fsolist.h;h=6875d1be1236966fb80b33281d4f5601d8237ad6;hb=10b2ded43caa3298cded1df8b620caaaee3f9209;hp=4e8e88b9ce6b89c2eb69ca89bdfaddc97ab27353;hpb=de18c1d81e0722779ce942110fb271e94db9635b;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/solist.h b/gdb/solist.h index 4e8e88b9ce..6875d1be12 100644 --- a/gdb/solist.h +++ b/gdb/solist.h @@ -1,6 +1,5 @@ /* Shared library declarations for GDB, the GNU Debugger. - Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, - 2001, 2007, 2008, 2009 Free Software Foundation, Inc. + Copyright (C) 1990-2018 Free Software Foundation, Inc. This file is part of GDB. @@ -23,10 +22,18 @@ #define SO_NAME_MAX_PATH_SIZE 512 /* FIXME: Should be dynamic */ /* For domain_enum domain. */ #include "symtab.h" +#include "gdb_bfd.h" -/* Forward declaration for target specific link map information. This - struct is opaque to all but the target specific file. */ -struct lm_info; +#define ALL_SO_LIBS(so) \ + for (so = so_list_head; \ + so != NULL; \ + so = so->next) + +/* Base class for target-specific link map information. */ + +struct lm_info_base +{ +}; struct so_list { @@ -39,8 +46,8 @@ struct so_list /* A pointer to target specific link map information. Often this will be a copy of struct link_map from the user process, but it need not be; it can be any collection of data needed to - traverse the dynamic linker's data structures. */ - struct lm_info *lm_info; + traverse the dynamic linker's data structures. */ + lm_info_base *lm_info; /* Shared object file name, exactly as it appears in the inferior's link map. This may be a relative path, or something @@ -49,7 +56,7 @@ struct so_list map we've already loaded. */ char so_original_name[SO_NAME_MAX_PATH_SIZE]; - /* shared object file name, expanded to something GDB can open */ + /* Shared object file name, expanded to something GDB can open. */ char so_name[SO_NAME_MAX_PATH_SIZE]; /* Program space this shared library belongs to. */ @@ -62,15 +69,22 @@ struct so_list current_sos must initialize these fields to 0. */ bfd *abfd; - char symbols_loaded; /* flag: symbols read in yet? */ - char from_tty; /* flag: print msgs? */ - struct objfile *objfile; /* objfile for loaded lib */ + char symbols_loaded; /* flag: symbols read in yet? */ + + /* objfile with symbols for a loaded library. Target memory is read from + ABFD. OBJFILE may be NULL either before symbols have been loaded, if + the file cannot be found or after the command "nosharedlibrary". */ + struct objfile *objfile; + struct target_section *sections; struct target_section *sections_end; /* Record the range of addresses belonging to this shared library. There may not be just one (e.g. if two segments are relocated - differently); but this is only used for "info sharedlibrary". */ + differently). This is used for "info sharedlibrary" and + the MI command "-file-list-shared-libraries". The latter has a format + that supports outputting multiple segments once the related code + supports them. */ CORE_ADDR addr_low, addr_high; }; @@ -81,44 +95,55 @@ struct target_so_ops void (*relocate_section_addresses) (struct so_list *so, struct target_section *); - /* Free the the link map info and any other private data - structures associated with a so_list entry. */ + /* Free the link map info and any other private data structures + associated with a so_list entry. */ void (*free_so) (struct so_list *so); + /* Reset private data structures associated with SO. + This is called when SO is about to be reloaded. + It is also called before free_so when SO is about to be freed. */ + void (*clear_so) (struct so_list *so); + /* Reset or free private data structures not associated with so_list entries. */ void (*clear_solib) (void); /* Target dependent code to run after child process fork. */ - void (*solib_create_inferior_hook) (void); + void (*solib_create_inferior_hook) (int from_tty); - /* Do additional symbol handling, lookup, etc. after symbols - for a shared object have been loaded. */ - void (*special_symbol_handling) (void); + /* Construct a list of the currently loaded shared objects. This + list does not include an entry for the main executable file. - /* Construct a list of the currently loaded shared objects. */ + Note that we only gather information directly available from the + inferior --- we don't examine any of the shared library files + themselves. The declaration of `struct so_list' says which fields + we provide values for. */ struct so_list *(*current_sos) (void); - /* Find, open, and read the symbols for the main executable. */ - int (*open_symbol_file_object) (void *from_ttyp); + /* Find, open, and read the symbols for the main executable. If + FROM_TTY is non-zero, allow messages to be printed. */ + int (*open_symbol_file_object) (int from_ttyp); /* Determine if PC lies in the dynamic symbol resolution code of - the run time loader */ + the run time loader. */ int (*in_dynsym_resolve_code) (CORE_ADDR pc); /* Find and open shared library binary file. */ - bfd *(*bfd_open) (char *pathname); + gdb_bfd_ref_ptr (*bfd_open) (const char *pathname); - /* Extra hook for finding and opening a solib. - Convenience function for remote debuggers finding host libs. */ - int (*find_and_open_solib) (char *soname, - unsigned o_flags, char **temp_pathname); + /* Optional extra hook for finding and opening a solib. + If TEMP_PATHNAME is non-NULL: If the file is successfully opened a + pointer to a malloc'd and realpath'd copy of SONAME is stored there, + otherwise NULL is stored there. */ + int (*find_and_open_solib) (const char *soname, + unsigned o_flags, + gdb::unique_xmalloc_ptr *temp_pathname); /* Hook for looking up global symbols in a library-specific way. */ - struct symbol * (*lookup_lib_global_symbol) (const struct objfile *objfile, - const char *name, - const char *linkage_name, - const domain_enum domain); + struct block_symbol (*lookup_lib_global_symbol) + (struct objfile *objfile, + const char *name, + const domain_enum domain); /* Given two so_list objects, one from the GDB thread list and another from the list returned by current_sos, return 1 @@ -134,30 +159,59 @@ struct target_so_ops core file (in particular, for readonly sections). */ int (*keep_data_in_core) (CORE_ADDR vaddr, unsigned long size); + + /* Enable or disable optional solib event breakpoints as + appropriate. This should be called whenever + stop_on_solib_events is changed. This pointer can be + NULL, in which case no enabling or disabling is necessary + for this target. */ + void (*update_breakpoints) (void); + + /* Target-specific processing of solib events that will be + performed before solib_add is called. This pointer can be + NULL, in which case no specific preprocessing is necessary + for this target. */ + void (*handle_event) (void); }; /* Free the memory associated with a (so_list *). */ void free_so (struct so_list *so); +/* A deleter that calls free_so. */ +struct so_deleter +{ + void operator() (struct so_list *so) const + { + free_so (so); + } +}; + +/* A unique pointer to a so_list. */ +typedef std::unique_ptr so_list_up; + /* Return address of first so_list entry in master shared object list. */ struct so_list *master_so_list (void); +/* Find main executable binary file. */ +extern gdb::unique_xmalloc_ptr exec_file_find (const char *in_pathname, + int *fd); + /* Find shared library binary file. */ -extern char *solib_find (char *in_pathname, int *fd); +extern gdb::unique_xmalloc_ptr solib_find (const char *in_pathname, + int *fd); /* Open BFD for shared library file. */ -extern bfd *solib_bfd_fopen (char *pathname, int fd); +extern gdb_bfd_ref_ptr solib_bfd_fopen (const char *pathname, int fd); /* Find solib binary file and open it. */ -extern bfd *solib_bfd_open (char *in_pathname); +extern gdb_bfd_ref_ptr solib_bfd_open (const char *in_pathname); -/* FIXME: gdbarch needs to control this variable */ +/* FIXME: gdbarch needs to control this variable. */ extern struct target_so_ops *current_target_so_ops; /* Handler for library-specific global symbol lookup in solib.c. */ -struct symbol *solib_global_lookup (const struct objfile *objfile, - const char *name, - const char *linkage_name, - const domain_enum domain); +struct block_symbol solib_global_lookup (struct objfile *objfile, + const char *name, + const domain_enum domain); #endif