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Diffstat (limited to 'gdb/symfile.c')
| -rw-r--r-- | gdb/symfile.c | 3354 |
1 files changed, 0 insertions, 3354 deletions
diff --git a/gdb/symfile.c b/gdb/symfile.c deleted file mode 100644 index 8d63484..0000000 --- a/gdb/symfile.c +++ /dev/null @@ -1,3354 +0,0 @@ -/* Generic symbol file reading for the GNU debugger, GDB. - - Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2001, 2002 Free Software Foundation, Inc. - - Contributed by Cygnus Support, using pieces from other GDB modules. - - 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 - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - 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. */ - -#include "defs.h" -#include "symtab.h" -#include "gdbtypes.h" -#include "gdbcore.h" -#include "frame.h" -#include "target.h" -#include "value.h" -#include "symfile.h" -#include "objfiles.h" -#include "gdbcmd.h" -#include "breakpoint.h" -#include "language.h" -#include "complaints.h" -#include "demangle.h" -#include "inferior.h" /* for write_pc */ -#include "gdb-stabs.h" -#include "gdb_obstack.h" -#include "completer.h" -#include "bcache.h" - -#include <sys/types.h> -#include <fcntl.h> -#include "gdb_string.h" -#include "gdb_stat.h" -#include <ctype.h> -#include <time.h> - -#ifndef O_BINARY -#define O_BINARY 0 -#endif - -#ifdef HPUXHPPA - -/* Some HP-UX related globals to clear when a new "main" - symbol file is loaded. HP-specific. */ - -extern int hp_som_som_object_present; -extern int hp_cxx_exception_support_initialized; -#define RESET_HP_UX_GLOBALS() do {\ - hp_som_som_object_present = 0; /* indicates HP-compiled code */ \ - hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \ - } while (0) -#endif - -int (*ui_load_progress_hook) (const char *section, unsigned long num); -void (*show_load_progress) (const char *section, - unsigned long section_sent, - unsigned long section_size, - unsigned long total_sent, - unsigned long total_size); -void (*pre_add_symbol_hook) (char *); -void (*post_add_symbol_hook) (void); -void (*target_new_objfile_hook) (struct objfile *); - -static void clear_symtab_users_cleanup (void *ignore); - -/* Global variables owned by this file */ -int readnow_symbol_files; /* Read full symbols immediately */ - -struct complaint oldsyms_complaint = -{ - "Replacing old symbols for `%s'", 0, 0 -}; - -struct complaint empty_symtab_complaint = -{ - "Empty symbol table found for `%s'", 0, 0 -}; - -struct complaint unknown_option_complaint = -{ - "Unknown option `%s' ignored", 0, 0 -}; - -/* External variables and functions referenced. */ - -extern void report_transfer_performance (unsigned long, time_t, time_t); - -/* Functions this file defines */ - -#if 0 -static int simple_read_overlay_region_table (void); -static void simple_free_overlay_region_table (void); -#endif - -static void set_initial_language (void); - -static void load_command (char *, int); - -static void symbol_file_add_main_1 (char *args, int from_tty, int flags); - -static void add_symbol_file_command (char *, int); - -static void add_shared_symbol_files_command (char *, int); - -static void cashier_psymtab (struct partial_symtab *); - -bfd *symfile_bfd_open (char *); - -int get_section_index (struct objfile *, char *); - -static void find_sym_fns (struct objfile *); - -static void decrement_reading_symtab (void *); - -static void overlay_invalidate_all (void); - -static int overlay_is_mapped (struct obj_section *); - -void list_overlays_command (char *, int); - -void map_overlay_command (char *, int); - -void unmap_overlay_command (char *, int); - -static void overlay_auto_command (char *, int); - -static void overlay_manual_command (char *, int); - -static void overlay_off_command (char *, int); - -static void overlay_load_command (char *, int); - -static void overlay_command (char *, int); - -static void simple_free_overlay_table (void); - -static void read_target_long_array (CORE_ADDR, unsigned int *, int); - -static int simple_read_overlay_table (void); - -static int simple_overlay_update_1 (struct obj_section *); - -static void add_filename_language (char *ext, enum language lang); - -static void set_ext_lang_command (char *args, int from_tty); - -static void info_ext_lang_command (char *args, int from_tty); - -static void init_filename_language_table (void); - -void _initialize_symfile (void); - -/* List of all available sym_fns. On gdb startup, each object file reader - calls add_symtab_fns() to register information on each format it is - prepared to read. */ - -static struct sym_fns *symtab_fns = NULL; - -/* Flag for whether user will be reloading symbols multiple times. - Defaults to ON for VxWorks, otherwise OFF. */ - -#ifdef SYMBOL_RELOADING_DEFAULT -int symbol_reloading = SYMBOL_RELOADING_DEFAULT; -#else -int symbol_reloading = 0; -#endif - -/* If non-zero, shared library symbols will be added automatically - when the inferior is created, new libraries are loaded, or when - attaching to the inferior. This is almost always what users will - want to have happen; but for very large programs, the startup time - will be excessive, and so if this is a problem, the user can clear - this flag and then add the shared library symbols as needed. Note - that there is a potential for confusion, since if the shared - library symbols are not loaded, commands like "info fun" will *not* - report all the functions that are actually present. */ - -int auto_solib_add = 1; - -/* For systems that support it, a threshold size in megabytes. If - automatically adding a new library's symbol table to those already - known to the debugger would cause the total shared library symbol - size to exceed this threshhold, then the shlib's symbols are not - added. The threshold is ignored if the user explicitly asks for a - shlib to be added, such as when using the "sharedlibrary" - command. */ - -int auto_solib_limit; - - -/* Since this function is called from within qsort, in an ANSI environment - it must conform to the prototype for qsort, which specifies that the - comparison function takes two "void *" pointers. */ - -static int -compare_symbols (const void *s1p, const void *s2p) -{ - register struct symbol **s1, **s2; - - s1 = (struct symbol **) s1p; - s2 = (struct symbol **) s2p; - return (strcmp (SYMBOL_SOURCE_NAME (*s1), SYMBOL_SOURCE_NAME (*s2))); -} - -/* - - LOCAL FUNCTION - - compare_psymbols -- compare two partial symbols by name - - DESCRIPTION - - Given pointers to pointers to two partial symbol table entries, - compare them by name and return -N, 0, or +N (ala strcmp). - Typically used by sorting routines like qsort(). - - NOTES - - Does direct compare of first two characters before punting - and passing to strcmp for longer compares. Note that the - original version had a bug whereby two null strings or two - identically named one character strings would return the - comparison of memory following the null byte. - - */ - -static int -compare_psymbols (const void *s1p, const void *s2p) -{ - register struct partial_symbol **s1, **s2; - register char *st1, *st2; - - s1 = (struct partial_symbol **) s1p; - s2 = (struct partial_symbol **) s2p; - st1 = SYMBOL_SOURCE_NAME (*s1); - st2 = SYMBOL_SOURCE_NAME (*s2); - - - if ((st1[0] - st2[0]) || !st1[0]) - { - return (st1[0] - st2[0]); - } - else if ((st1[1] - st2[1]) || !st1[1]) - { - return (st1[1] - st2[1]); - } - else - { - return (strcmp (st1, st2)); - } -} - -void -sort_pst_symbols (struct partial_symtab *pst) -{ - /* Sort the global list; don't sort the static list */ - - qsort (pst->objfile->global_psymbols.list + pst->globals_offset, - pst->n_global_syms, sizeof (struct partial_symbol *), - compare_psymbols); -} - -/* Call sort_block_syms to sort alphabetically the symbols of one block. */ - -void -sort_block_syms (register struct block *b) -{ - qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b), - sizeof (struct symbol *), compare_symbols); -} - -/* Call sort_symtab_syms to sort alphabetically - the symbols of each block of one symtab. */ - -void -sort_symtab_syms (register struct symtab *s) -{ - register struct blockvector *bv; - int nbl; - int i; - register struct block *b; - - if (s == 0) - return; - bv = BLOCKVECTOR (s); - nbl = BLOCKVECTOR_NBLOCKS (bv); - for (i = 0; i < nbl; i++) - { - b = BLOCKVECTOR_BLOCK (bv, i); - if (BLOCK_SHOULD_SORT (b)) - sort_block_syms (b); - } -} - -/* Make a null terminated copy of the string at PTR with SIZE characters in - the obstack pointed to by OBSTACKP . Returns the address of the copy. - Note that the string at PTR does not have to be null terminated, I.E. it - may be part of a larger string and we are only saving a substring. */ - -char * -obsavestring (char *ptr, int size, struct obstack *obstackp) -{ - register char *p = (char *) obstack_alloc (obstackp, size + 1); - /* Open-coded memcpy--saves function call time. These strings are usually - short. FIXME: Is this really still true with a compiler that can - inline memcpy? */ - { - register char *p1 = ptr; - register char *p2 = p; - char *end = ptr + size; - while (p1 != end) - *p2++ = *p1++; - } - p[size] = 0; - return p; -} - -/* Concatenate strings S1, S2 and S3; return the new string. Space is found - in the obstack pointed to by OBSTACKP. */ - -char * -obconcat (struct obstack *obstackp, const char *s1, const char *s2, - const char *s3) -{ - register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; - register char *val = (char *) obstack_alloc (obstackp, len); - strcpy (val, s1); - strcat (val, s2); - strcat (val, s3); - return val; -} - -/* True if we are nested inside psymtab_to_symtab. */ - -int currently_reading_symtab = 0; - -static void -decrement_reading_symtab (void *dummy) -{ - currently_reading_symtab--; -} - -/* Get the symbol table that corresponds to a partial_symtab. - This is fast after the first time you do it. In fact, there - is an even faster macro PSYMTAB_TO_SYMTAB that does the fast - case inline. */ - -struct symtab * -psymtab_to_symtab (register struct partial_symtab *pst) -{ - /* If it's been looked up before, return it. */ - if (pst->symtab) - return pst->symtab; - - /* If it has not yet been read in, read it. */ - if (!pst->readin) - { - struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); - currently_reading_symtab++; - (*pst->read_symtab) (pst); - do_cleanups (back_to); - } - - return pst->symtab; -} - -/* Initialize entry point information for this objfile. */ - -void -init_entry_point_info (struct objfile *objfile) -{ - /* Save startup file's range of PC addresses to help blockframe.c - decide where the bottom of the stack is. */ - - if (bfd_get_file_flags (objfile->obfd) & EXEC_P) - { - /* Executable file -- record its entry point so we'll recognize - the startup file because it contains the entry point. */ - objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); - } - else - { - /* Examination of non-executable.o files. Short-circuit this stuff. */ - objfile->ei.entry_point = INVALID_ENTRY_POINT; - } - objfile->ei.entry_file_lowpc = INVALID_ENTRY_LOWPC; - objfile->ei.entry_file_highpc = INVALID_ENTRY_HIGHPC; - objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC; - objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC; - objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC; - objfile->ei.main_func_highpc = INVALID_ENTRY_HIGHPC; -} - -/* Get current entry point address. */ - -CORE_ADDR -entry_point_address (void) -{ - return symfile_objfile ? symfile_objfile->ei.entry_point : 0; -} - -/* Remember the lowest-addressed loadable section we've seen. - This function is called via bfd_map_over_sections. - - In case of equal vmas, the section with the largest size becomes the - lowest-addressed loadable section. - - If the vmas and sizes are equal, the last section is considered the - lowest-addressed loadable section. */ - -void -find_lowest_section (bfd *abfd, asection *sect, PTR obj) -{ - asection **lowest = (asection **) obj; - - if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) - return; - if (!*lowest) - *lowest = sect; /* First loadable section */ - else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) - *lowest = sect; /* A lower loadable section */ - else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) - && (bfd_section_size (abfd, (*lowest)) - <= bfd_section_size (abfd, sect))) - *lowest = sect; -} - - -/* Build (allocate and populate) a section_addr_info struct from - an existing section table. */ - -extern struct section_addr_info * -build_section_addr_info_from_section_table (const struct section_table *start, - const struct section_table *end) -{ - struct section_addr_info *sap; - const struct section_table *stp; - int oidx; - - sap = xmalloc (sizeof (struct section_addr_info)); - memset (sap, 0, sizeof (struct section_addr_info)); - - for (stp = start, oidx = 0; stp != end; stp++) - { - if (bfd_get_section_flags (stp->bfd, - stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) - && oidx < MAX_SECTIONS) - { - sap->other[oidx].addr = stp->addr; - sap->other[oidx].name - = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); - sap->other[oidx].sectindex = stp->the_bfd_section->index; - oidx++; - } - } - - return sap; -} - - -/* Free all memory allocated by build_section_addr_info_from_section_table. */ - -extern void -free_section_addr_info (struct section_addr_info *sap) -{ - int idx; - - for (idx = 0; idx < MAX_SECTIONS; idx++) - if (sap->other[idx].name) - xfree (sap->other[idx].name); - xfree (sap); -} - - -/* Parse the user's idea of an offset for dynamic linking, into our idea - of how to represent it for fast symbol reading. This is the default - version of the sym_fns.sym_offsets function for symbol readers that - don't need to do anything special. It allocates a section_offsets table - for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ - -void -default_symfile_offsets (struct objfile *objfile, - struct section_addr_info *addrs) -{ - int i; - asection *sect = NULL; - - objfile->num_sections = SECT_OFF_MAX; - objfile->section_offsets = (struct section_offsets *) - obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); - memset (objfile->section_offsets, 0, SIZEOF_SECTION_OFFSETS); - - /* Now calculate offsets for section that were specified by the - caller. */ - for (i = 0; i < MAX_SECTIONS && addrs->other[i].name; i++) - { - struct other_sections *osp ; - - osp = &addrs->other[i] ; - if (osp->addr == 0) - continue; - - /* Record all sections in offsets */ - /* The section_offsets in the objfile are here filled in using - the BFD index. */ - (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; - } - - /* Remember the bfd indexes for the .text, .data, .bss and - .rodata sections. */ - - sect = bfd_get_section_by_name (objfile->obfd, ".text"); - if (sect) - objfile->sect_index_text = sect->index; - - sect = bfd_get_section_by_name (objfile->obfd, ".data"); - if (sect) - objfile->sect_index_data = sect->index; - - sect = bfd_get_section_by_name (objfile->obfd, ".bss"); - if (sect) - objfile->sect_index_bss = sect->index; - - sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); - if (sect) - objfile->sect_index_rodata = sect->index; - - /* This is where things get really weird... We MUST have valid - indices for the various sect_index_* members or gdb will abort. - So if for example, there is no ".text" section, we have to - accomodate that. Except when explicitly adding symbol files at - some address, section_offsets contains nothing but zeros, so it - doesn't matter which slot in section_offsets the individual - sect_index_* members index into. So if they are all zero, it is - safe to just point all the currently uninitialized indices to the - first slot. */ - - for (i = 0; i < objfile->num_sections; i++) - { - if (ANOFFSET (objfile->section_offsets, i) != 0) - { - break; - } - } - if (i == objfile->num_sections) - { - if (objfile->sect_index_text == -1) - objfile->sect_index_text = 0; - if (objfile->sect_index_data == -1) - objfile->sect_index_data = 0; - if (objfile->sect_index_bss == -1) - objfile->sect_index_bss = 0; - if (objfile->sect_index_rodata == -1) - objfile->sect_index_rodata = 0; - } -} - -/* Process a symbol file, as either the main file or as a dynamically - loaded file. - - OBJFILE is where the symbols are to be read from. - - ADDR is the address where the text segment was loaded, unless the - objfile is the main symbol file, in which case it is zero. - - MAINLINE is nonzero if this is the main symbol file, or zero if - it's an extra symbol file such as dynamically loaded code. - - VERBO is nonzero if the caller has printed a verbose message about - the symbol reading (and complaints can be more terse about it). */ - -void -syms_from_objfile (struct objfile *objfile, struct section_addr_info *addrs, - int mainline, int verbo) -{ - asection *lower_sect; - asection *sect; - CORE_ADDR lower_offset; - struct section_addr_info local_addr; - struct cleanup *old_chain; - int i; - - /* If ADDRS is NULL, initialize the local section_addr_info struct and - point ADDRS to it. We now establish the convention that an addr of - zero means no load address was specified. */ - - if (addrs == NULL) - { - memset (&local_addr, 0, sizeof (local_addr)); - addrs = &local_addr; - } - - init_entry_point_info (objfile); - find_sym_fns (objfile); - - if (objfile->sf == NULL) - return; /* No symbols. */ - - /* Make sure that partially constructed symbol tables will be cleaned up - if an error occurs during symbol reading. */ - old_chain = make_cleanup_free_objfile (objfile); - - if (mainline) - { - /* We will modify the main symbol table, make sure that all its users - will be cleaned up if an error occurs during symbol reading. */ - make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); - - /* Since no error yet, throw away the old symbol table. */ - - if (symfile_objfile != NULL) - { - free_objfile (symfile_objfile); - symfile_objfile = NULL; - } - - /* Currently we keep symbols from the add-symbol-file command. - If the user wants to get rid of them, they should do "symbol-file" - without arguments first. Not sure this is the best behavior - (PR 2207). */ - - (*objfile->sf->sym_new_init) (objfile); - } - - /* Convert addr into an offset rather than an absolute address. - We find the lowest address of a loaded segment in the objfile, - and assume that <addr> is where that got loaded. - - We no longer warn if the lowest section is not a text segment (as - happens for the PA64 port. */ - if (!mainline) - { - /* Find lowest loadable section to be used as starting point for - continguous sections. FIXME!! won't work without call to find - .text first, but this assumes text is lowest section. */ - lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); - if (lower_sect == NULL) - bfd_map_over_sections (objfile->obfd, find_lowest_section, - (PTR) &lower_sect); - if (lower_sect == NULL) - warning ("no loadable sections found in added symbol-file %s", - objfile->name); - else - if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) - warning ("Lowest section in %s is %s at %s", - objfile->name, - bfd_section_name (objfile->obfd, lower_sect), - paddr (bfd_section_vma (objfile->obfd, lower_sect))); - if (lower_sect != NULL) - lower_offset = bfd_section_vma (objfile->obfd, lower_sect); - else - lower_offset = 0; - - /* Calculate offsets for the loadable sections. - FIXME! Sections must be in order of increasing loadable section - so that contiguous sections can use the lower-offset!!! - - Adjust offsets if the segments are not contiguous. - If the section is contiguous, its offset should be set to - the offset of the highest loadable section lower than it - (the loadable section directly below it in memory). - this_offset = lower_offset = lower_addr - lower_orig_addr */ - - /* Calculate offsets for sections. */ - for (i=0 ; i < MAX_SECTIONS && addrs->other[i].name; i++) - { - if (addrs->other[i].addr != 0) - { - sect = bfd_get_section_by_name (objfile->obfd, addrs->other[i].name); - if (sect) - { - addrs->other[i].addr -= bfd_section_vma (objfile->obfd, sect); - lower_offset = addrs->other[i].addr; - /* This is the index used by BFD. */ - addrs->other[i].sectindex = sect->index ; - } - else - { - warning ("section %s not found in %s", addrs->other[i].name, - objfile->name); - addrs->other[i].addr = 0; - } - } - else - addrs->other[i].addr = lower_offset; - } - } - - /* Initialize symbol reading routines for this objfile, allow complaints to - appear for this new file, and record how verbose to be, then do the - initial symbol reading for this file. */ - - (*objfile->sf->sym_init) (objfile); - clear_complaints (1, verbo); - - (*objfile->sf->sym_offsets) (objfile, addrs); - -#ifndef IBM6000_TARGET - /* This is a SVR4/SunOS specific hack, I think. In any event, it - screws RS/6000. sym_offsets should be doing this sort of thing, - because it knows the mapping between bfd sections and - section_offsets. */ - /* This is a hack. As far as I can tell, section offsets are not - target dependent. They are all set to addr with a couple of - exceptions. The exceptions are sysvr4 shared libraries, whose - offsets are kept in solib structures anyway and rs6000 xcoff - which handles shared libraries in a completely unique way. - - Section offsets are built similarly, except that they are built - by adding addr in all cases because there is no clear mapping - from section_offsets into actual sections. Note that solib.c - has a different algorithm for finding section offsets. - - These should probably all be collapsed into some target - independent form of shared library support. FIXME. */ - - if (addrs) - { - struct obj_section *s; - - /* Map section offsets in "addr" back to the object's - sections by comparing the section names with bfd's - section names. Then adjust the section address by - the offset. */ /* for gdb/13815 */ - - ALL_OBJFILE_OSECTIONS (objfile, s) - { - CORE_ADDR s_addr = 0; - int i; - - for (i = 0; - !s_addr && i < MAX_SECTIONS && addrs->other[i].name; - i++) - if (strcmp (bfd_section_name (s->objfile->obfd, - s->the_bfd_section), - addrs->other[i].name) == 0) - s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ - - s->addr -= s->offset; - s->addr += s_addr; - s->endaddr -= s->offset; - s->endaddr += s_addr; - s->offset += s_addr; - } - } -#endif /* not IBM6000_TARGET */ - - (*objfile->sf->sym_read) (objfile, mainline); - - if (!have_partial_symbols () && !have_full_symbols ()) - { - wrap_here (""); - printf_filtered ("(no debugging symbols found)..."); - wrap_here (""); - } - - /* Don't allow char * to have a typename (else would get caddr_t). - Ditto void *. FIXME: Check whether this is now done by all the - symbol readers themselves (many of them now do), and if so remove - it from here. */ - - TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; - TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; - - /* Mark the objfile has having had initial symbol read attempted. Note - that this does not mean we found any symbols... */ - - objfile->flags |= OBJF_SYMS; - - /* Discard cleanups as symbol reading was successful. */ - - discard_cleanups (old_chain); - - /* Call this after reading in a new symbol table to give target - dependent code a crack at the new symbols. For instance, this - could be used to update the values of target-specific symbols GDB - needs to keep track of (such as _sigtramp, or whatever). */ - - TARGET_SYMFILE_POSTREAD (objfile); -} - -/* Perform required actions after either reading in the initial - symbols for a new objfile, or mapping in the symbols from a reusable - objfile. */ - -void -new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) -{ - - /* If this is the main symbol file we have to clean up all users of the - old main symbol file. Otherwise it is sufficient to fixup all the - breakpoints that may have been redefined by this symbol file. */ - if (mainline) - { - /* OK, make it the "real" symbol file. */ - symfile_objfile = objfile; - - clear_symtab_users (); - } - else - { - breakpoint_re_set (); - } - - /* We're done reading the symbol file; finish off complaints. */ - clear_complaints (0, verbo); -} - -/* Process a symbol file, as either the main file or as a dynamically - loaded file. - - NAME is the file name (which will be tilde-expanded and made - absolute herein) (but we don't free or modify NAME itself). - FROM_TTY says how verbose to be. MAINLINE specifies whether this - is the main symbol file, or whether it's an extra symbol file such - as dynamically loaded code. If !mainline, ADDR is the address - where the text segment was loaded. - - Upon success, returns a pointer to the objfile that was added. - Upon failure, jumps back to command level (never returns). */ - -struct objfile * -symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, - int mainline, int flags) -{ - struct objfile *objfile; - struct partial_symtab *psymtab; - bfd *abfd; - - /* Open a bfd for the file, and give user a chance to burp if we'd be - interactively wiping out any existing symbols. */ - - abfd = symfile_bfd_open (name); - - if ((have_full_symbols () || have_partial_symbols ()) - && mainline - && from_tty - && !query ("Load new symbol table from \"%s\"? ", name)) - error ("Not confirmed."); - - objfile = allocate_objfile (abfd, flags); - - /* If the objfile uses a mapped symbol file, and we have a psymtab for - it, then skip reading any symbols at this time. */ - - if ((objfile->flags & OBJF_MAPPED) && (objfile->flags & OBJF_SYMS)) - { - /* We mapped in an existing symbol table file that already has had - initial symbol reading performed, so we can skip that part. Notify - the user that instead of reading the symbols, they have been mapped. - */ - if (from_tty || info_verbose) - { - printf_filtered ("Mapped symbols for %s...", name); - wrap_here (""); - gdb_flush (gdb_stdout); - } - init_entry_point_info (objfile); - find_sym_fns (objfile); - } - else - { - /* We either created a new mapped symbol table, mapped an existing - symbol table file which has not had initial symbol reading - performed, or need to read an unmapped symbol table. */ - if (from_tty || info_verbose) - { - if (pre_add_symbol_hook) - pre_add_symbol_hook (name); - else - { - printf_filtered ("Reading symbols from %s...", name); - wrap_here (""); - gdb_flush (gdb_stdout); - } - } - syms_from_objfile (objfile, addrs, mainline, from_tty); - } - - /* We now have at least a partial symbol table. Check to see if the - user requested that all symbols be read on initial access via either - the gdb startup command line or on a per symbol file basis. Expand - all partial symbol tables for this objfile if so. */ - - if ((flags & OBJF_READNOW) || readnow_symbol_files) - { - if (from_tty || info_verbose) - { - printf_filtered ("expanding to full symbols..."); - wrap_here (""); - gdb_flush (gdb_stdout); - } - - for (psymtab = objfile->psymtabs; - psymtab != NULL; - psymtab = psymtab->next) - { - psymtab_to_symtab (psymtab); - } - } - - if (from_tty || info_verbose) - { - if (post_add_symbol_hook) - post_add_symbol_hook (); - else - { - printf_filtered ("done.\n"); - gdb_flush (gdb_stdout); - } - } - - if (objfile->sf == NULL) - return objfile; /* No symbols. */ - - new_symfile_objfile (objfile, mainline, from_tty); - - if (target_new_objfile_hook) - target_new_objfile_hook (objfile); - - return (objfile); -} - -/* Call symbol_file_add() with default values and update whatever is - affected by the loading of a new main(). - Used when the file is supplied in the gdb command line - and by some targets with special loading requirements. - The auxiliary function, symbol_file_add_main_1(), has the flags - argument for the switches that can only be specified in the symbol_file - command itself. */ - -void -symbol_file_add_main (char *args, int from_tty) -{ - symbol_file_add_main_1 (args, from_tty, 0); -} - -static void -symbol_file_add_main_1 (char *args, int from_tty, int flags) -{ - symbol_file_add (args, from_tty, NULL, 1, flags); - -#ifdef HPUXHPPA - RESET_HP_UX_GLOBALS (); -#endif - - /* Getting new symbols may change our opinion about - what is frameless. */ - reinit_frame_cache (); - - set_initial_language (); -} - -void -symbol_file_clear (int from_tty) -{ - if ((have_full_symbols () || have_partial_symbols ()) - && from_tty - && !query ("Discard symbol table from `%s'? ", - symfile_objfile->name)) - error ("Not confirmed."); - free_all_objfiles (); - - /* solib descriptors may have handles to objfiles. Since their - storage has just been released, we'd better wipe the solib - descriptors as well. - */ -#if defined(SOLIB_RESTART) - SOLIB_RESTART (); -#endif - - symfile_objfile = NULL; - if (from_tty) - printf_unfiltered ("No symbol file now.\n"); -#ifdef HPUXHPPA - RESET_HP_UX_GLOBALS (); -#endif -} - -/* This is the symbol-file command. Read the file, analyze its - symbols, and add a struct symtab to a symtab list. The syntax of - the command is rather bizarre--(1) buildargv implements various - quoting conventions which are undocumented and have little or - nothing in common with the way things are quoted (or not quoted) - elsewhere in GDB, (2) options are used, which are not generally - used in GDB (perhaps "set mapped on", "set readnow on" would be - better), (3) the order of options matters, which is contrary to GNU - conventions (because it is confusing and inconvenient). */ -/* Note: ezannoni 2000-04-17. This function used to have support for - rombug (see remote-os9k.c). It consisted of a call to target_link() - (target.c) to get the address of the text segment from the target, - and pass that to symbol_file_add(). This is no longer supported. */ - -void -symbol_file_command (char *args, int from_tty) -{ - char **argv; - char *name = NULL; - struct cleanup *cleanups; - int flags = OBJF_USERLOADED; - - dont_repeat (); - - if (args == NULL) - { - symbol_file_clear (from_tty); - } - else - { - if ((argv = buildargv (args)) == NULL) - { - nomem (0); - } - cleanups = make_cleanup_freeargv (argv); - while (*argv != NULL) - { - if (STREQ (*argv, "-mapped")) - flags |= OBJF_MAPPED; - else - if (STREQ (*argv, "-readnow")) - flags |= OBJF_READNOW; - else - if (**argv == '-') - error ("unknown option `%s'", *argv); - else - { - name = *argv; - - symbol_file_add_main_1 (name, from_tty, flags); - } - argv++; - } - - if (name == NULL) - { - error ("no symbol file name was specified"); - } - do_cleanups (cleanups); - } -} - -/* Set the initial language. - - A better solution would be to record the language in the psymtab when reading - partial symbols, and then use it (if known) to set the language. This would - be a win for formats that encode the language in an easily discoverable place, - such as DWARF. For stabs, we can jump through hoops looking for specially - named symbols or try to intuit the language from the specific type of stabs - we find, but we can't do that until later when we read in full symbols. - FIXME. */ - -static void -set_initial_language (void) -{ - struct partial_symtab *pst; - enum language lang = language_unknown; - - pst = find_main_psymtab (); - if (pst != NULL) - { - if (pst->filename != NULL) - { - lang = deduce_language_from_filename (pst->filename); - } - if (lang == language_unknown) - { - /* Make C the default language */ - lang = language_c; - } - set_language (lang); - expected_language = current_language; /* Don't warn the user */ - } -} - -/* Open file specified by NAME and hand it off to BFD for preliminary - analysis. Result is a newly initialized bfd *, which includes a newly - malloc'd` copy of NAME (tilde-expanded and made absolute). - In case of trouble, error() is called. */ - -bfd * -symfile_bfd_open (char *name) -{ - bfd *sym_bfd; - int desc; - char *absolute_name; - - - - name = tilde_expand (name); /* Returns 1st new malloc'd copy */ - - /* Look down path for it, allocate 2nd new malloc'd copy. */ - desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); -#if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) - if (desc < 0) - { - char *exename = alloca (strlen (name) + 5); - strcat (strcpy (exename, name), ".exe"); - desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, - 0, &absolute_name); - } -#endif - if (desc < 0) - { - make_cleanup (xfree, name); - perror_with_name (name); - } - xfree (name); /* Free 1st new malloc'd copy */ - name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ - /* It'll be freed in free_objfile(). */ - - sym_bfd = bfd_fdopenr (name, gnutarget, desc); - if (!sym_bfd) - { - close (desc); - make_cleanup (xfree, name); - error ("\"%s\": can't open to read symbols: %s.", name, - bfd_errmsg (bfd_get_error ())); - } - sym_bfd->cacheable = 1; - - if (!bfd_check_format (sym_bfd, bfd_object)) - { - /* FIXME: should be checking for errors from bfd_close (for one thing, - on error it does not free all the storage associated with the - bfd). */ - bfd_close (sym_bfd); /* This also closes desc */ - make_cleanup (xfree, name); - error ("\"%s\": can't read symbols: %s.", name, - bfd_errmsg (bfd_get_error ())); - } - return (sym_bfd); -} - -/* Return the section index for the given section name. Return -1 if - the section was not found. */ -int -get_section_index (struct objfile *objfile, char *section_name) -{ - asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); - if (sect) - return sect->index; - else - return -1; -} - -/* Link a new symtab_fns into the global symtab_fns list. Called on gdb - startup by the _initialize routine in each object file format reader, - to register information about each format the the reader is prepared - to handle. */ - -void -add_symtab_fns (struct sym_fns *sf) -{ - sf->next = symtab_fns; - symtab_fns = sf; -} - - -/* Initialize to read symbols from the symbol file sym_bfd. It either - returns or calls error(). The result is an initialized struct sym_fns - in the objfile structure, that contains cached information about the - symbol file. */ - -static void -find_sym_fns (struct objfile *objfile) -{ - struct sym_fns *sf; - enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); - char *our_target = bfd_get_target (objfile->obfd); - - if (our_flavour == bfd_target_srec_flavour - || our_flavour == bfd_target_ihex_flavour - || our_flavour == bfd_target_tekhex_flavour) - return; /* No symbols. */ - - /* Special kludge for apollo. See dstread.c. */ - if (STREQN (our_target, "apollo", 6)) - our_flavour = (enum bfd_flavour) -2; - - for (sf = symtab_fns; sf != NULL; sf = sf->next) - { - if (our_flavour == sf->sym_flavour) - { - objfile->sf = sf; - return; - } - } - error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", - bfd_get_target (objfile->obfd)); -} - -/* This function runs the load command of our current target. */ - -static void -load_command (char *arg, int from_tty) -{ - if (arg == NULL) - arg = get_exec_file (1); - target_load (arg, from_tty); - - /* After re-loading the executable, we don't really know which - overlays are mapped any more. */ - overlay_cache_invalid = 1; -} - -/* This version of "load" should be usable for any target. Currently - it is just used for remote targets, not inftarg.c or core files, - on the theory that only in that case is it useful. - - Avoiding xmodem and the like seems like a win (a) because we don't have - to worry about finding it, and (b) On VMS, fork() is very slow and so - we don't want to run a subprocess. On the other hand, I'm not sure how - performance compares. */ - -static int download_write_size = 512; -static int validate_download = 0; - -/* Callback service function for generic_load (bfd_map_over_sections). */ - -static void -add_section_size_callback (bfd *abfd, asection *asec, void *data) -{ - bfd_size_type *sum = data; - - *sum += bfd_get_section_size_before_reloc (asec); -} - -/* Opaque data for load_section_callback. */ -struct load_section_data { - unsigned long load_offset; - unsigned long write_count; - unsigned long data_count; - bfd_size_type total_size; -}; - -/* Callback service function for generic_load (bfd_map_over_sections). */ - -static void -load_section_callback (bfd *abfd, asection *asec, void *data) -{ - struct load_section_data *args = data; - - if (bfd_get_section_flags (abfd, asec) & SEC_LOAD) - { - bfd_size_type size = bfd_get_section_size_before_reloc (asec); - if (size > 0) - { - char *buffer; - struct cleanup *old_chain; - CORE_ADDR lma = bfd_section_lma (abfd, asec) + args->load_offset; - bfd_size_type block_size; - int err; - const char *sect_name = bfd_get_section_name (abfd, asec); - bfd_size_type sent; - - if (download_write_size > 0 && size > download_write_size) - block_size = download_write_size; - else - block_size = size; - - buffer = xmalloc (size); - old_chain = make_cleanup (xfree, buffer); - - /* Is this really necessary? I guess it gives the user something - to look at during a long download. */ - ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", - sect_name, paddr_nz (size), paddr_nz (lma)); - - bfd_get_section_contents (abfd, asec, buffer, 0, size); - - sent = 0; - do - { - int len; - bfd_size_type this_transfer = size - sent; - - if (this_transfer >= block_size) - this_transfer = block_size; - len = target_write_memory_partial (lma, buffer, - this_transfer, &err); - if (err) - break; - if (validate_download) - { - /* Broken memories and broken monitors manifest - themselves here when bring new computers to - life. This doubles already slow downloads. */ - /* NOTE: cagney/1999-10-18: A more efficient - implementation might add a verify_memory() - method to the target vector and then use - that. remote.c could implement that method - using the ``qCRC'' packet. */ - char *check = xmalloc (len); - struct cleanup *verify_cleanups = - make_cleanup (xfree, check); - - if (target_read_memory (lma, check, len) != 0) - error ("Download verify read failed at 0x%s", - paddr (lma)); - if (memcmp (buffer, check, len) != 0) - error ("Download verify compare failed at 0x%s", - paddr (lma)); - do_cleanups (verify_cleanups); - } - args->data_count += len; - lma += len; - buffer += len; - args->write_count += 1; - sent += len; - if (quit_flag - || (ui_load_progress_hook != NULL - && ui_load_progress_hook (sect_name, sent))) - error ("Canceled the download"); - - if (show_load_progress != NULL) - show_load_progress (sect_name, sent, size, - args->data_count, args->total_size); - } - while (sent < size); - - if (err != 0) - error ("Memory access error while loading section %s.", sect_name); - - do_cleanups (old_chain); - } - } -} - -void -generic_load (char *args, int from_tty) -{ - asection *s; - bfd *loadfile_bfd; - time_t start_time, end_time; /* Start and end times of download */ - char *filename; - struct cleanup *old_cleanups; - char *offptr; - struct load_section_data cbdata; - CORE_ADDR entry; - - cbdata.load_offset = 0; /* Offset to add to vma for each section. */ - cbdata.write_count = 0; /* Number of writes needed. */ - cbdata.data_count = 0; /* Number of bytes written to target memory. */ - cbdata.total_size = 0; /* Total size of all bfd sectors. */ - - /* Parse the input argument - the user can specify a load offset as - a second argument. */ - filename = xmalloc (strlen (args) + 1); - old_cleanups = make_cleanup (xfree, filename); - strcpy (filename, args); - offptr = strchr (filename, ' '); - if (offptr != NULL) - { - char *endptr; - - cbdata.load_offset = strtoul (offptr, &endptr, 0); - if (offptr == endptr) - error ("Invalid download offset:%s\n", offptr); - *offptr = '\0'; - } - else - cbdata.load_offset = 0; - - /* Open the file for loading. */ - loadfile_bfd = bfd_openr (filename, gnutarget); - if (loadfile_bfd == NULL) - { - perror_with_name (filename); - return; - } - - /* FIXME: should be checking for errors from bfd_close (for one thing, - on error it does not free all the storage associated with the - bfd). */ - make_cleanup_bfd_close (loadfile_bfd); - - if (!bfd_check_format (loadfile_bfd, bfd_object)) - { - error ("\"%s\" is not an object file: %s", filename, - bfd_errmsg (bfd_get_error ())); - } - - bfd_map_over_sections (loadfile_bfd, add_section_size_callback, - (void *) &cbdata.total_size); - - start_time = time (NULL); - - bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); - - end_time = time (NULL); - - entry = bfd_get_start_address (loadfile_bfd); - ui_out_text (uiout, "Start address "); - ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); - ui_out_text (uiout, ", load size "); - ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count); - ui_out_text (uiout, "\n"); - /* We were doing this in remote-mips.c, I suspect it is right - for other targets too. */ - write_pc (entry); - - /* FIXME: are we supposed to call symbol_file_add or not? According to - a comment from remote-mips.c (where a call to symbol_file_add was - commented out), making the call confuses GDB if more than one file is - loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c - does. */ - - print_transfer_performance (gdb_stdout, cbdata.data_count, - cbdata.write_count, end_time - start_time); - - do_cleanups (old_cleanups); -} - -/* Report how fast the transfer went. */ - -/* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being - replaced by print_transfer_performance (with a very different - function signature). */ - -void -report_transfer_performance (unsigned long data_count, time_t start_time, - time_t end_time) -{ - print_transfer_performance (gdb_stdout, data_count, - end_time - start_time, 0); -} - -void -print_transfer_performance (struct ui_file *stream, - unsigned long data_count, - unsigned long write_count, - unsigned long time_count) -{ - ui_out_text (uiout, "Transfer rate: "); - if (time_count > 0) - { - ui_out_field_fmt (uiout, "transfer-rate", "%lu", - (data_count * 8) / time_count); - ui_out_text (uiout, " bits/sec"); - } - else - { - ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); - ui_out_text (uiout, " bits in <1 sec"); - } - if (write_count > 0) - { - ui_out_text (uiout, ", "); - ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); - ui_out_text (uiout, " bytes/write"); - } - ui_out_text (uiout, ".\n"); -} - -/* This function allows the addition of incrementally linked object files. - It does not modify any state in the target, only in the debugger. */ -/* Note: ezannoni 2000-04-13 This function/command used to have a - special case syntax for the rombug target (Rombug is the boot - monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the - rombug case, the user doesn't need to supply a text address, - instead a call to target_link() (in target.c) would supply the - value to use. We are now discontinuing this type of ad hoc syntax. */ - -/* ARGSUSED */ -static void -add_symbol_file_command (char *args, int from_tty) -{ - char *filename = NULL; - int flags = OBJF_USERLOADED; - char *arg; - int expecting_option = 0; - int section_index = 0; - int argcnt = 0; - int sec_num = 0; - int i; - int expecting_sec_name = 0; - int expecting_sec_addr = 0; - - struct - { - char *name; - char *value; - } sect_opts[SECT_OFF_MAX]; - - struct section_addr_info section_addrs; - struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); - - dont_repeat (); - - if (args == NULL) - error ("add-symbol-file takes a file name and an address"); - - /* Make a copy of the string that we can safely write into. */ - args = xstrdup (args); - - /* Ensure section_addrs is initialized */ - memset (§ion_addrs, 0, sizeof (section_addrs)); - - while (*args != '\000') - { - /* Any leading spaces? */ - while (isspace (*args)) - args++; - - /* Point arg to the beginning of the argument. */ - arg = args; - - /* Move args pointer over the argument. */ - while ((*args != '\000') && !isspace (*args)) - args++; - - /* If there are more arguments, terminate arg and - proceed past it. */ - if (*args != '\000') - *args++ = '\000'; - - /* Now process the argument. */ - if (argcnt == 0) - { - /* The first argument is the file name. */ - filename = tilde_expand (arg); - make_cleanup (xfree, filename); - } - else - if (argcnt == 1) - { - /* The second argument is always the text address at which - to load the program. */ - sect_opts[section_index].name = ".text"; - sect_opts[section_index].value = arg; - section_index++; - } - else - { - /* It's an option (starting with '-') or it's an argument - to an option */ - - if (*arg == '-') - { - if (strcmp (arg, "-mapped") == 0) - flags |= OBJF_MAPPED; - else - if (strcmp (arg, "-readnow") == 0) - flags |= OBJF_READNOW; - else - if (strcmp (arg, "-s") == 0) - { - if (section_index >= SECT_OFF_MAX) - error ("Too many sections specified."); - expecting_sec_name = 1; - expecting_sec_addr = 1; - } - } - else - { - if (expecting_sec_name) - { - sect_opts[section_index].name = arg; - expecting_sec_name = 0; - } - else - if (expecting_sec_addr) - { - sect_opts[section_index].value = arg; - expecting_sec_addr = 0; - section_index++; - } - else - error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"); - } - } - argcnt++; - } - - /* Print the prompt for the query below. And save the arguments into - a sect_addr_info structure to be passed around to other - functions. We have to split this up into separate print - statements because local_hex_string returns a local static - string. */ - - printf_filtered ("add symbol table from file \"%s\" at\n", filename); - for (i = 0; i < section_index; i++) - { - CORE_ADDR addr; - char *val = sect_opts[i].value; - char *sec = sect_opts[i].name; - - val = sect_opts[i].value; - if (val[0] == '0' && val[1] == 'x') - addr = strtoul (val+2, NULL, 16); - else - addr = strtoul (val, NULL, 10); - - /* Here we store the section offsets in the order they were - entered on the command line. */ - section_addrs.other[sec_num].name = sec; - section_addrs.other[sec_num].addr = addr; - printf_filtered ("\t%s_addr = %s\n", - sec, - local_hex_string ((unsigned long)addr)); - sec_num++; - - /* The object's sections are initialized when a - call is made to build_objfile_section_table (objfile). - This happens in reread_symbols. - At this point, we don't know what file type this is, - so we can't determine what section names are valid. */ - } - - if (from_tty && (!query ("%s", ""))) - error ("Not confirmed."); - - symbol_file_add (filename, from_tty, §ion_addrs, 0, flags); - - /* Getting new symbols may change our opinion about what is - frameless. */ - reinit_frame_cache (); - do_cleanups (my_cleanups); -} - -static void -add_shared_symbol_files_command (char *args, int from_tty) -{ -#ifdef ADD_SHARED_SYMBOL_FILES - ADD_SHARED_SYMBOL_FILES (args, from_tty); -#else - error ("This command is not available in this configuration of GDB."); -#endif -} - -/* Re-read symbols if a symbol-file has changed. */ -void -reread_symbols (void) -{ - struct objfile *objfile; - long new_modtime; - int reread_one = 0; - struct stat new_statbuf; - int res; - - /* With the addition of shared libraries, this should be modified, - the load time should be saved in the partial symbol tables, since - different tables may come from different source files. FIXME. - This routine should then walk down each partial symbol table - and see if the symbol table that it originates from has been changed */ - - for (objfile = object_files; objfile; objfile = objfile->next) - { - if (objfile->obfd) - { -#ifdef IBM6000_TARGET - /* If this object is from a shared library, then you should - stat on the library name, not member name. */ - - if (objfile->obfd->my_archive) - res = stat (objfile->obfd->my_archive->filename, &new_statbuf); - else -#endif - res = stat (objfile->name, &new_statbuf); - if (res != 0) - { - /* FIXME, should use print_sys_errmsg but it's not filtered. */ - printf_filtered ("`%s' has disappeared; keeping its symbols.\n", - objfile->name); - continue; - } - new_modtime = new_statbuf.st_mtime; - if (new_modtime != objfile->mtime) - { - struct cleanup *old_cleanups; - struct section_offsets *offsets; - int num_offsets; - char *obfd_filename; - - printf_filtered ("`%s' has changed; re-reading symbols.\n", - objfile->name); - - /* There are various functions like symbol_file_add, - symfile_bfd_open, syms_from_objfile, etc., which might - appear to do what we want. But they have various other - effects which we *don't* want. So we just do stuff - ourselves. We don't worry about mapped files (for one thing, - any mapped file will be out of date). */ - - /* If we get an error, blow away this objfile (not sure if - that is the correct response for things like shared - libraries). */ - old_cleanups = make_cleanup_free_objfile (objfile); - /* We need to do this whenever any symbols go away. */ - make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); - - /* Clean up any state BFD has sitting around. We don't need - to close the descriptor but BFD lacks a way of closing the - BFD without closing the descriptor. */ - obfd_filename = bfd_get_filename (objfile->obfd); - if (!bfd_close (objfile->obfd)) - error ("Can't close BFD for %s: %s", objfile->name, - bfd_errmsg (bfd_get_error ())); - objfile->obfd = bfd_openr (obfd_filename, gnutarget); - if (objfile->obfd == NULL) - error ("Can't open %s to read symbols.", objfile->name); - /* bfd_openr sets cacheable to true, which is what we want. */ - if (!bfd_check_format (objfile->obfd, bfd_object)) - error ("Can't read symbols from %s: %s.", objfile->name, - bfd_errmsg (bfd_get_error ())); - - /* Save the offsets, we will nuke them with the rest of the - psymbol_obstack. */ - num_offsets = objfile->num_sections; - offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); - memcpy (offsets, objfile->section_offsets, SIZEOF_SECTION_OFFSETS); - - /* Nuke all the state that we will re-read. Much of the following - code which sets things to NULL really is necessary to tell - other parts of GDB that there is nothing currently there. */ - - /* FIXME: Do we have to free a whole linked list, or is this - enough? */ - if (objfile->global_psymbols.list) - xmfree (objfile->md, objfile->global_psymbols.list); - memset (&objfile->global_psymbols, 0, - sizeof (objfile->global_psymbols)); - if (objfile->static_psymbols.list) - xmfree (objfile->md, objfile->static_psymbols.list); - memset (&objfile->static_psymbols, 0, - sizeof (objfile->static_psymbols)); - - /* Free the obstacks for non-reusable objfiles */ - bcache_xfree (objfile->psymbol_cache); - objfile->psymbol_cache = bcache_xmalloc (); - bcache_xfree (objfile->macro_cache); - objfile->macro_cache = bcache_xmalloc (); - obstack_free (&objfile->psymbol_obstack, 0); - obstack_free (&objfile->symbol_obstack, 0); - obstack_free (&objfile->type_obstack, 0); - objfile->sections = NULL; - objfile->symtabs = NULL; - objfile->psymtabs = NULL; - objfile->free_psymtabs = NULL; - objfile->msymbols = NULL; - objfile->minimal_symbol_count = 0; - memset (&objfile->msymbol_hash, 0, - sizeof (objfile->msymbol_hash)); - memset (&objfile->msymbol_demangled_hash, 0, - sizeof (objfile->msymbol_demangled_hash)); - objfile->fundamental_types = NULL; - if (objfile->sf != NULL) - { - (*objfile->sf->sym_finish) (objfile); - } - - /* We never make this a mapped file. */ - objfile->md = NULL; - /* obstack_specify_allocation also initializes the obstack so - it is empty. */ - objfile->psymbol_cache = bcache_xmalloc (); - objfile->macro_cache = bcache_xmalloc (); - obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, - xmalloc, xfree); - obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, - xmalloc, xfree); - obstack_specify_allocation (&objfile->type_obstack, 0, 0, - xmalloc, xfree); - if (build_objfile_section_table (objfile)) - { - error ("Can't find the file sections in `%s': %s", - objfile->name, bfd_errmsg (bfd_get_error ())); - } - - /* We use the same section offsets as from last time. I'm not - sure whether that is always correct for shared libraries. */ - objfile->section_offsets = (struct section_offsets *) - obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); - memcpy (objfile->section_offsets, offsets, SIZEOF_SECTION_OFFSETS); - objfile->num_sections = num_offsets; - - /* What the hell is sym_new_init for, anyway? The concept of - distinguishing between the main file and additional files - in this way seems rather dubious. */ - if (objfile == symfile_objfile) - { - (*objfile->sf->sym_new_init) (objfile); -#ifdef HPUXHPPA - RESET_HP_UX_GLOBALS (); -#endif - } - - (*objfile->sf->sym_init) (objfile); - clear_complaints (1, 1); - /* The "mainline" parameter is a hideous hack; I think leaving it - zero is OK since dbxread.c also does what it needs to do if - objfile->global_psymbols.size is 0. */ - (*objfile->sf->sym_read) (objfile, 0); - if (!have_partial_symbols () && !have_full_symbols ()) - { - wrap_here (""); - printf_filtered ("(no debugging symbols found)\n"); - wrap_here (""); - } - objfile->flags |= OBJF_SYMS; - - /* We're done reading the symbol file; finish off complaints. */ - clear_complaints (0, 1); - - /* Getting new symbols may change our opinion about what is - frameless. */ - - reinit_frame_cache (); - - /* Discard cleanups as symbol reading was successful. */ - discard_cleanups (old_cleanups); - - /* If the mtime has changed between the time we set new_modtime - and now, we *want* this to be out of date, so don't call stat - again now. */ - objfile->mtime = new_modtime; - reread_one = 1; - - /* Call this after reading in a new symbol table to give target - dependent code a crack at the new symbols. For instance, this - could be used to update the values of target-specific symbols GDB - needs to keep track of (such as _sigtramp, or whatever). */ - - TARGET_SYMFILE_POSTREAD (objfile); - } - } - } - - if (reread_one) - clear_symtab_users (); -} - - - -typedef struct -{ - char *ext; - enum language lang; -} -filename_language; - -static filename_language *filename_language_table; -static int fl_table_size, fl_table_next; - -static void -add_filename_language (char *ext, enum language lang) -{ - if (fl_table_next >= fl_table_size) - { - fl_table_size += 10; - filename_language_table = - xrealloc (filename_language_table, - fl_table_size * sizeof (*filename_language_table)); - } - - filename_language_table[fl_table_next].ext = xstrdup (ext); - filename_language_table[fl_table_next].lang = lang; - fl_table_next++; -} - -static char *ext_args; - -static void -set_ext_lang_command (char *args, int from_tty) -{ - int i; - char *cp = ext_args; - enum language lang; - - /* First arg is filename extension, starting with '.' */ - if (*cp != '.') - error ("'%s': Filename extension must begin with '.'", ext_args); - - /* Find end of first arg. */ - while (*cp && !isspace (*cp)) - cp++; - - if (*cp == '\0') - error ("'%s': two arguments required -- filename extension and language", - ext_args); - - /* Null-terminate first arg */ - *cp++ = '\0'; - - /* Find beginning of second arg, which should be a source language. */ - while (*cp && isspace (*cp)) - cp++; - - if (*cp == '\0') - error ("'%s': two arguments required -- filename extension and language", - ext_args); - - /* Lookup the language from among those we know. */ - lang = language_enum (cp); - - /* Now lookup the filename extension: do we already know it? */ - for (i = 0; i < fl_table_next; i++) - if (0 == strcmp (ext_args, filename_language_table[i].ext)) - break; - - if (i >= fl_table_next) - { - /* new file extension */ - add_filename_language (ext_args, lang); - } - else - { - /* redefining a previously known filename extension */ - - /* if (from_tty) */ - /* query ("Really make files of type %s '%s'?", */ - /* ext_args, language_str (lang)); */ - - xfree (filename_language_table[i].ext); - filename_language_table[i].ext = xstrdup (ext_args); - filename_language_table[i].lang = lang; - } -} - -static void -info_ext_lang_command (char *args, int from_tty) -{ - int i; - - printf_filtered ("Filename extensions and the languages they represent:"); - printf_filtered ("\n\n"); - for (i = 0; i < fl_table_next; i++) - printf_filtered ("\t%s\t- %s\n", - filename_language_table[i].ext, - language_str (filename_language_table[i].lang)); -} - -static void -init_filename_language_table (void) -{ - if (fl_table_size == 0) /* protect against repetition */ - { - fl_table_size = 20; - fl_table_next = 0; - filename_language_table = - xmalloc (fl_table_size * sizeof (*filename_language_table)); - add_filename_language (".c", language_c); - add_filename_language (".C", language_cplus); - add_filename_language (".cc", language_cplus); - add_filename_language (".cp", language_cplus); - add_filename_language (".cpp", language_cplus); - add_filename_language (".cxx", language_cplus); - add_filename_language (".c++", language_cplus); - add_filename_language (".java", language_java); - add_filename_language (".class", language_java); - /* OBSOLETE add_filename_language (".ch", language_chill); */ - /* OBSOLETE add_filename_language (".c186", language_chill); */ - /* OBSOLETE add_filename_language (".c286", language_chill); */ - add_filename_language (".f", language_fortran); - add_filename_language (".F", language_fortran); - add_filename_language (".s", language_asm); - add_filename_language (".S", language_asm); - add_filename_language (".pas", language_pascal); - add_filename_language (".p", language_pascal); - add_filename_language (".pp", language_pascal); - } -} - -enum language -deduce_language_from_filename (char *filename) -{ - int i; - char *cp; - - if (filename != NULL) - if ((cp = strrchr (filename, '.')) != NULL) - for (i = 0; i < fl_table_next; i++) - if (strcmp (cp, filename_language_table[i].ext) == 0) - return filename_language_table[i].lang; - - return language_unknown; -} - -/* allocate_symtab: - - Allocate and partly initialize a new symbol table. Return a pointer - to it. error() if no space. - - Caller must set these fields: - LINETABLE(symtab) - symtab->blockvector - symtab->dirname - symtab->free_code - symtab->free_ptr - possibly free_named_symtabs (symtab->filename); - */ - -struct symtab * -allocate_symtab (char *filename, struct objfile *objfile) -{ - register struct symtab *symtab; - - symtab = (struct symtab *) - obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab)); - memset (symtab, 0, sizeof (*symtab)); - symtab->filename = obsavestring (filename, strlen (filename), - &objfile->symbol_obstack); - symtab->fullname = NULL; - symtab->language = deduce_language_from_filename (filename); - symtab->debugformat = obsavestring ("unknown", 7, - &objfile->symbol_obstack); - - /* Hook it to the objfile it comes from */ - - symtab->objfile = objfile; - symtab->next = objfile->symtabs; - objfile->symtabs = symtab; - - /* FIXME: This should go away. It is only defined for the Z8000, - and the Z8000 definition of this macro doesn't have anything to - do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just - here for convenience. */ -#ifdef INIT_EXTRA_SYMTAB_INFO - INIT_EXTRA_SYMTAB_INFO (symtab); -#endif - - return (symtab); -} - -struct partial_symtab * -allocate_psymtab (char *filename, struct objfile *objfile) -{ - struct partial_symtab *psymtab; - - if (objfile->free_psymtabs) - { - psymtab = objfile->free_psymtabs; - objfile->free_psymtabs = psymtab->next; - } - else - psymtab = (struct partial_symtab *) - obstack_alloc (&objfile->psymbol_obstack, - sizeof (struct partial_symtab)); - - memset (psymtab, 0, sizeof (struct partial_symtab)); - psymtab->filename = obsavestring (filename, strlen (filename), - &objfile->psymbol_obstack); - psymtab->symtab = NULL; - - /* Prepend it to the psymtab list for the objfile it belongs to. - Psymtabs are searched in most recent inserted -> least recent - inserted order. */ - - psymtab->objfile = objfile; - psymtab->next = objfile->psymtabs; - objfile->psymtabs = psymtab; -#if 0 - { - struct partial_symtab **prev_pst; - psymtab->objfile = objfile; - psymtab->next = NULL; - prev_pst = &(objfile->psymtabs); - while ((*prev_pst) != NULL) - prev_pst = &((*prev_pst)->next); - (*prev_pst) = psymtab; - } -#endif - - return (psymtab); -} - -void -discard_psymtab (struct partial_symtab *pst) -{ - struct partial_symtab **prev_pst; - - /* From dbxread.c: - Empty psymtabs happen as a result of header files which don't - have any symbols in them. There can be a lot of them. But this - check is wrong, in that a psymtab with N_SLINE entries but - nothing else is not empty, but we don't realize that. Fixing - that without slowing things down might be tricky. */ - - /* First, snip it out of the psymtab chain */ - - prev_pst = &(pst->objfile->psymtabs); - while ((*prev_pst) != pst) - prev_pst = &((*prev_pst)->next); - (*prev_pst) = pst->next; - - /* Next, put it on a free list for recycling */ - - pst->next = pst->objfile->free_psymtabs; - pst->objfile->free_psymtabs = pst; -} - - -/* Reset all data structures in gdb which may contain references to symbol - table data. */ - -void -clear_symtab_users (void) -{ - /* Someday, we should do better than this, by only blowing away - the things that really need to be blown. */ - clear_value_history (); - clear_displays (); - clear_internalvars (); - breakpoint_re_set (); - set_default_breakpoint (0, 0, 0, 0); - current_source_symtab = 0; - current_source_line = 0; - clear_pc_function_cache (); - if (target_new_objfile_hook) - target_new_objfile_hook (NULL); -} - -static void -clear_symtab_users_cleanup (void *ignore) -{ - clear_symtab_users (); -} - -/* clear_symtab_users_once: - - This function is run after symbol reading, or from a cleanup. - If an old symbol table was obsoleted, the old symbol table - has been blown away, but the other GDB data structures that may - reference it have not yet been cleared or re-directed. (The old - symtab was zapped, and the cleanup queued, in free_named_symtab() - below.) - - This function can be queued N times as a cleanup, or called - directly; it will do all the work the first time, and then will be a - no-op until the next time it is queued. This works by bumping a - counter at queueing time. Much later when the cleanup is run, or at - the end of symbol processing (in case the cleanup is discarded), if - the queued count is greater than the "done-count", we do the work - and set the done-count to the queued count. If the queued count is - less than or equal to the done-count, we just ignore the call. This - is needed because reading a single .o file will often replace many - symtabs (one per .h file, for example), and we don't want to reset - the breakpoints N times in the user's face. - - The reason we both queue a cleanup, and call it directly after symbol - reading, is because the cleanup protects us in case of errors, but is - discarded if symbol reading is successful. */ - -#if 0 -/* FIXME: As free_named_symtabs is currently a big noop this function - is no longer needed. */ -static void clear_symtab_users_once (void); - -static int clear_symtab_users_queued; -static int clear_symtab_users_done; - -static void -clear_symtab_users_once (void) -{ - /* Enforce once-per-`do_cleanups'-semantics */ - if (clear_symtab_users_queued <= clear_symtab_users_done) - return; - clear_symtab_users_done = clear_symtab_users_queued; - - clear_symtab_users (); -} -#endif - -/* Delete the specified psymtab, and any others that reference it. */ - -static void -cashier_psymtab (struct partial_symtab *pst) -{ - struct partial_symtab *ps, *pprev = NULL; - int i; - - /* Find its previous psymtab in the chain */ - for (ps = pst->objfile->psymtabs; ps; ps = ps->next) - { - if (ps == pst) - break; - pprev = ps; - } - - if (ps) - { - /* Unhook it from the chain. */ - if (ps == pst->objfile->psymtabs) - pst->objfile->psymtabs = ps->next; - else - pprev->next = ps->next; - - /* FIXME, we can't conveniently deallocate the entries in the - partial_symbol lists (global_psymbols/static_psymbols) that - this psymtab points to. These just take up space until all - the psymtabs are reclaimed. Ditto the dependencies list and - filename, which are all in the psymbol_obstack. */ - - /* We need to cashier any psymtab that has this one as a dependency... */ - again: - for (ps = pst->objfile->psymtabs; ps; ps = ps->next) - { - for (i = 0; i < ps->number_of_dependencies; i++) - { - if (ps->dependencies[i] == pst) - { - cashier_psymtab (ps); - goto again; /* Must restart, chain has been munged. */ - } - } - } - } -} - -/* If a symtab or psymtab for filename NAME is found, free it along - with any dependent breakpoints, displays, etc. - Used when loading new versions of object modules with the "add-file" - command. This is only called on the top-level symtab or psymtab's name; - it is not called for subsidiary files such as .h files. - - Return value is 1 if we blew away the environment, 0 if not. - FIXME. The return value appears to never be used. - - FIXME. I think this is not the best way to do this. We should - work on being gentler to the environment while still cleaning up - all stray pointers into the freed symtab. */ - -int -free_named_symtabs (char *name) -{ -#if 0 - /* FIXME: With the new method of each objfile having it's own - psymtab list, this function needs serious rethinking. In particular, - why was it ever necessary to toss psymtabs with specific compilation - unit filenames, as opposed to all psymtabs from a particular symbol - file? -- fnf - Well, the answer is that some systems permit reloading of particular - compilation units. We want to blow away any old info about these - compilation units, regardless of which objfiles they arrived in. --gnu. */ - - register struct symtab *s; - register struct symtab *prev; - register struct partial_symtab *ps; - struct blockvector *bv; - int blewit = 0; - - /* We only wack things if the symbol-reload switch is set. */ - if (!symbol_reloading) - return 0; - - /* Some symbol formats have trouble providing file names... */ - if (name == 0 || *name == '\0') - return 0; - - /* Look for a psymtab with the specified name. */ - -again2: - for (ps = partial_symtab_list; ps; ps = ps->next) - { - if (STREQ (name, ps->filename)) - { - cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ - goto again2; /* Must restart, chain has been munged */ - } - } - - /* Look for a symtab with the specified name. */ - - for (s = symtab_list; s; s = s->next) - { - if (STREQ (name, s->filename)) - break; - prev = s; - } - - if (s) - { - if (s == symtab_list) - symtab_list = s->next; - else - prev->next = s->next; - - /* For now, queue a delete for all breakpoints, displays, etc., whether - or not they depend on the symtab being freed. This should be - changed so that only those data structures affected are deleted. */ - - /* But don't delete anything if the symtab is empty. - This test is necessary due to a bug in "dbxread.c" that - causes empty symtabs to be created for N_SO symbols that - contain the pathname of the object file. (This problem - has been fixed in GDB 3.9x). */ - - bv = BLOCKVECTOR (s); - if (BLOCKVECTOR_NBLOCKS (bv) > 2 - || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) - || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) - { - complain (&oldsyms_complaint, name); - - clear_symtab_users_queued++; - make_cleanup (clear_symtab_users_once, 0); - blewit = 1; - } - else - { - complain (&empty_symtab_complaint, name); - } - - free_symtab (s); - } - else - { - /* It is still possible that some breakpoints will be affected - even though no symtab was found, since the file might have - been compiled without debugging, and hence not be associated - with a symtab. In order to handle this correctly, we would need - to keep a list of text address ranges for undebuggable files. - For now, we do nothing, since this is a fairly obscure case. */ - ; - } - - /* FIXME, what about the minimal symbol table? */ - return blewit; -#else - return (0); -#endif -} - -/* Allocate and partially fill a partial symtab. It will be - completely filled at the end of the symbol list. - - FILENAME is the name of the symbol-file we are reading from. */ - -struct partial_symtab * -start_psymtab_common (struct objfile *objfile, - struct section_offsets *section_offsets, char *filename, - CORE_ADDR textlow, struct partial_symbol **global_syms, - struct partial_symbol **static_syms) -{ - struct partial_symtab *psymtab; - - psymtab = allocate_psymtab (filename, objfile); - psymtab->section_offsets = section_offsets; - psymtab->textlow = textlow; - psymtab->texthigh = psymtab->textlow; /* default */ - psymtab->globals_offset = global_syms - objfile->global_psymbols.list; - psymtab->statics_offset = static_syms - objfile->static_psymbols.list; - return (psymtab); -} - -/* Add a symbol with a long value to a psymtab. - Since one arg is a struct, we pass in a ptr and deref it (sigh). */ - -void -add_psymbol_to_list (char *name, int namelength, namespace_enum namespace, - enum address_class class, - struct psymbol_allocation_list *list, long val, /* Value as a long */ - CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ - enum language language, struct objfile *objfile) -{ - register struct partial_symbol *psym; - char *buf = alloca (namelength + 1); - /* psymbol is static so that there will be no uninitialized gaps in the - structure which might contain random data, causing cache misses in - bcache. */ - static struct partial_symbol psymbol; - - /* Create local copy of the partial symbol */ - memcpy (buf, name, namelength); - buf[namelength] = '\0'; - SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); - /* val and coreaddr are mutually exclusive, one of them *will* be zero */ - if (val != 0) - { - SYMBOL_VALUE (&psymbol) = val; - } - else - { - SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; - } - SYMBOL_SECTION (&psymbol) = 0; - SYMBOL_LANGUAGE (&psymbol) = language; - PSYMBOL_NAMESPACE (&psymbol) = namespace; - PSYMBOL_CLASS (&psymbol) = class; - SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); - - /* Stash the partial symbol away in the cache */ - psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); - - /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ - if (list->next >= list->list + list->size) - { - extend_psymbol_list (list, objfile); - } - *list->next++ = psym; - OBJSTAT (objfile, n_psyms++); -} - -/* Add a symbol with a long value to a psymtab. This differs from - * add_psymbol_to_list above in taking both a mangled and a demangled - * name. */ - -void -add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, - int dem_namelength, namespace_enum namespace, - enum address_class class, - struct psymbol_allocation_list *list, long val, /* Value as a long */ - CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ - enum language language, - struct objfile *objfile) -{ - register struct partial_symbol *psym; - char *buf = alloca (namelength + 1); - /* psymbol is static so that there will be no uninitialized gaps in the - structure which might contain random data, causing cache misses in - bcache. */ - static struct partial_symbol psymbol; - - /* Create local copy of the partial symbol */ - - memcpy (buf, name, namelength); - buf[namelength] = '\0'; - SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); - - buf = alloca (dem_namelength + 1); - memcpy (buf, dem_name, dem_namelength); - buf[dem_namelength] = '\0'; - - switch (language) - { - case language_c: - case language_cplus: - SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = - bcache (buf, dem_namelength + 1, objfile->psymbol_cache); - break; - /* OBSOLETE case language_chill: */ - /* OBSOLETE SYMBOL_CHILL_DEMANGLED_NAME (&psymbol) = */ - /* OBSOLETE bcache (buf, dem_namelength + 1, objfile->psymbol_cache); */ - - /* FIXME What should be done for the default case? Ignoring for now. */ - } - - /* val and coreaddr are mutually exclusive, one of them *will* be zero */ - if (val != 0) - { - SYMBOL_VALUE (&psymbol) = val; - } - else - { - SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; - } - SYMBOL_SECTION (&psymbol) = 0; - SYMBOL_LANGUAGE (&psymbol) = language; - PSYMBOL_NAMESPACE (&psymbol) = namespace; - PSYMBOL_CLASS (&psymbol) = class; - SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); - - /* Stash the partial symbol away in the cache */ - psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); - - /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ - if (list->next >= list->list + list->size) - { - extend_psymbol_list (list, objfile); - } - *list->next++ = psym; - OBJSTAT (objfile, n_psyms++); -} - -/* Initialize storage for partial symbols. */ - -void -init_psymbol_list (struct objfile *objfile, int total_symbols) -{ - /* Free any previously allocated psymbol lists. */ - - if (objfile->global_psymbols.list) - { - xmfree (objfile->md, (PTR) objfile->global_psymbols.list); - } - if (objfile->static_psymbols.list) - { - xmfree (objfile->md, (PTR) objfile->static_psymbols.list); - } - - /* Current best guess is that approximately a twentieth - of the total symbols (in a debugging file) are global or static - oriented symbols */ - - objfile->global_psymbols.size = total_symbols / 10; - objfile->static_psymbols.size = total_symbols / 10; - - if (objfile->global_psymbols.size > 0) - { - objfile->global_psymbols.next = - objfile->global_psymbols.list = (struct partial_symbol **) - xmmalloc (objfile->md, (objfile->global_psymbols.size - * sizeof (struct partial_symbol *))); - } - if (objfile->static_psymbols.size > 0) - { - objfile->static_psymbols.next = - objfile->static_psymbols.list = (struct partial_symbol **) - xmmalloc (objfile->md, (objfile->static_psymbols.size - * sizeof (struct partial_symbol *))); - } -} - -/* OVERLAYS: - The following code implements an abstraction for debugging overlay sections. - - The target model is as follows: - 1) The gnu linker will permit multiple sections to be mapped into the - same VMA, each with its own unique LMA (or load address). - 2) It is assumed that some runtime mechanism exists for mapping the - sections, one by one, from the load address into the VMA address. - 3) This code provides a mechanism for gdb to keep track of which - sections should be considered to be mapped from the VMA to the LMA. - This information is used for symbol lookup, and memory read/write. - For instance, if a section has been mapped then its contents - should be read from the VMA, otherwise from the LMA. - - Two levels of debugger support for overlays are available. One is - "manual", in which the debugger relies on the user to tell it which - overlays are currently mapped. This level of support is - implemented entirely in the core debugger, and the information about - whether a section is mapped is kept in the objfile->obj_section table. - - The second level of support is "automatic", and is only available if - the target-specific code provides functionality to read the target's - overlay mapping table, and translate its contents for the debugger - (by updating the mapped state information in the obj_section tables). - - The interface is as follows: - User commands: - overlay map <name> -- tell gdb to consider this section mapped - overlay unmap <name> -- tell gdb to consider this section unmapped - overlay list -- list the sections that GDB thinks are mapped - overlay read-target -- get the target's state of what's mapped - overlay off/manual/auto -- set overlay debugging state - Functional interface: - find_pc_mapped_section(pc): if the pc is in the range of a mapped - section, return that section. - find_pc_overlay(pc): find any overlay section that contains - the pc, either in its VMA or its LMA - overlay_is_mapped(sect): true if overlay is marked as mapped - section_is_overlay(sect): true if section's VMA != LMA - pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA - pc_in_unmapped_range(...): true if pc belongs to section's LMA - sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap - overlay_mapped_address(...): map an address from section's LMA to VMA - overlay_unmapped_address(...): map an address from section's VMA to LMA - symbol_overlayed_address(...): Return a "current" address for symbol: - either in VMA or LMA depending on whether - the symbol's section is currently mapped - */ - -/* Overlay debugging state: */ - -enum overlay_debugging_state overlay_debugging = ovly_off; -int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ - -/* Target vector for refreshing overlay mapped state */ -static void simple_overlay_update (struct obj_section *); -void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; - -/* Function: section_is_overlay (SECTION) - Returns true if SECTION has VMA not equal to LMA, ie. - SECTION is loaded at an address different from where it will "run". */ - -int -section_is_overlay (asection *section) -{ - /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ - - if (overlay_debugging) - if (section && section->lma != 0 && - section->vma != section->lma) - return 1; - - return 0; -} - -/* Function: overlay_invalidate_all (void) - Invalidate the mapped state of all overlay sections (mark it as stale). */ - -static void -overlay_invalidate_all (void) -{ - struct objfile *objfile; - struct obj_section *sect; - - ALL_OBJSECTIONS (objfile, sect) - if (section_is_overlay (sect->the_bfd_section)) - sect->ovly_mapped = -1; -} - -/* Function: overlay_is_mapped (SECTION) - Returns true if section is an overlay, and is currently mapped. - Private: public access is thru function section_is_mapped. - - Access to the ovly_mapped flag is restricted to this function, so - that we can do automatic update. If the global flag - OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call - overlay_invalidate_all. If the mapped state of the particular - section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ - -static int -overlay_is_mapped (struct obj_section *osect) -{ - if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) - return 0; - - switch (overlay_debugging) - { - default: - case ovly_off: - return 0; /* overlay debugging off */ - case ovly_auto: /* overlay debugging automatic */ - /* Unles there is a target_overlay_update function, - there's really nothing useful to do here (can't really go auto) */ - if (target_overlay_update) - { - if (overlay_cache_invalid) - { - overlay_invalidate_all (); - overlay_cache_invalid = 0; - } - if (osect->ovly_mapped == -1) - (*target_overlay_update) (osect); - } - /* fall thru to manual case */ - case ovly_on: /* overlay debugging manual */ - return osect->ovly_mapped == 1; - } -} - -/* Function: section_is_mapped - Returns true if section is an overlay, and is currently mapped. */ - -int -section_is_mapped (asection *section) -{ - struct objfile *objfile; - struct obj_section *osect; - - if (overlay_debugging) - if (section && section_is_overlay (section)) - ALL_OBJSECTIONS (objfile, osect) - if (osect->the_bfd_section == section) - return overlay_is_mapped (osect); - - return 0; -} - -/* Function: pc_in_unmapped_range - If PC falls into the lma range of SECTION, return true, else false. */ - -CORE_ADDR -pc_in_unmapped_range (CORE_ADDR pc, asection *section) -{ - /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ - - int size; - - if (overlay_debugging) - if (section && section_is_overlay (section)) - { - size = bfd_get_section_size_before_reloc (section); - if (section->lma <= pc && pc < section->lma + size) - return 1; - } - return 0; -} - -/* Function: pc_in_mapped_range - If PC falls into the vma range of SECTION, return true, else false. */ - -CORE_ADDR -pc_in_mapped_range (CORE_ADDR pc, asection *section) -{ - /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ - - int size; - - if (overlay_debugging) - if (section && section_is_overlay (section)) - { - size = bfd_get_section_size_before_reloc (section); - if (section->vma <= pc && pc < section->vma + size) - return 1; - } - return 0; -} - - -/* Return true if the mapped ranges of sections A and B overlap, false - otherwise. */ -int -sections_overlap (asection *a, asection *b) -{ - /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ - - CORE_ADDR a_start = a->vma; - CORE_ADDR a_end = a->vma + bfd_get_section_size_before_reloc (a); - CORE_ADDR b_start = b->vma; - CORE_ADDR b_end = b->vma + bfd_get_section_size_before_reloc (b); - - return (a_start < b_end && b_start < a_end); -} - -/* Function: overlay_unmapped_address (PC, SECTION) - Returns the address corresponding to PC in the unmapped (load) range. - May be the same as PC. */ - -CORE_ADDR -overlay_unmapped_address (CORE_ADDR pc, asection *section) -{ - /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ - - if (overlay_debugging) - if (section && section_is_overlay (section) && - pc_in_mapped_range (pc, section)) - return pc + section->lma - section->vma; - - return pc; -} - -/* Function: overlay_mapped_address (PC, SECTION) - Returns the address corresponding to PC in the mapped (runtime) range. - May be the same as PC. */ - -CORE_ADDR -overlay_mapped_address (CORE_ADDR pc, asection *section) -{ - /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ - - if (overlay_debugging) - if (section && section_is_overlay (section) && - pc_in_unmapped_range (pc, section)) - return pc + section->vma - section->lma; - - return pc; -} - - -/* Function: symbol_overlayed_address - Return one of two addresses (relative to the VMA or to the LMA), - depending on whether the section is mapped or not. */ - -CORE_ADDR -symbol_overlayed_address (CORE_ADDR address, asection *section) -{ - if (overlay_debugging) - { - /* If the symbol has no section, just return its regular address. */ - if (section == 0) - return address; - /* If the symbol's section is not an overlay, just return its address */ - if (!section_is_overlay (section)) - return address; - /* If the symbol's section is mapped, just return its address */ - if (section_is_mapped (section)) - return address; - /* - * HOWEVER: if the symbol is in an overlay section which is NOT mapped, - * then return its LOADED address rather than its vma address!! - */ - return overlay_unmapped_address (address, section); - } - return address; -} - -/* Function: find_pc_overlay (PC) - Return the best-match overlay section for PC: - If PC matches a mapped overlay section's VMA, return that section. - Else if PC matches an unmapped section's VMA, return that section. - Else if PC matches an unmapped section's LMA, return that section. */ - -asection * -find_pc_overlay (CORE_ADDR pc) -{ - struct objfile *objfile; - struct obj_section *osect, *best_match = NULL; - - if (overlay_debugging) - ALL_OBJSECTIONS (objfile, osect) - if (section_is_overlay (osect->the_bfd_section)) - { - if (pc_in_mapped_range (pc, osect->the_bfd_section)) - { - if (overlay_is_mapped (osect)) - return osect->the_bfd_section; - else - best_match = osect; - } - else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) - best_match = osect; - } - return best_match ? best_match->the_bfd_section : NULL; -} - -/* Function: find_pc_mapped_section (PC) - If PC falls into the VMA address range of an overlay section that is - currently marked as MAPPED, return that section. Else return NULL. */ - -asection * -find_pc_mapped_section (CORE_ADDR pc) -{ - struct objfile *objfile; - struct obj_section *osect; - - if (overlay_debugging) - ALL_OBJSECTIONS (objfile, osect) - if (pc_in_mapped_range (pc, osect->the_bfd_section) && - overlay_is_mapped (osect)) - return osect->the_bfd_section; - - return NULL; -} - -/* Function: list_overlays_command - Print a list of mapped sections and their PC ranges */ - -void -list_overlays_command (char *args, int from_tty) -{ - int nmapped = 0; - struct objfile *objfile; - struct obj_section *osect; - - if (overlay_debugging) - ALL_OBJSECTIONS (objfile, osect) - if (overlay_is_mapped (osect)) - { - const char *name; - bfd_vma lma, vma; - int size; - - vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); - lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); - size = bfd_get_section_size_before_reloc (osect->the_bfd_section); - name = bfd_section_name (objfile->obfd, osect->the_bfd_section); - - printf_filtered ("Section %s, loaded at ", name); - print_address_numeric (lma, 1, gdb_stdout); - puts_filtered (" - "); - print_address_numeric (lma + size, 1, gdb_stdout); - printf_filtered (", mapped at "); - print_address_numeric (vma, 1, gdb_stdout); - puts_filtered (" - "); - print_address_numeric (vma + size, 1, gdb_stdout); - puts_filtered ("\n"); - - nmapped++; - } - if (nmapped == 0) - printf_filtered ("No sections are mapped.\n"); -} - -/* Function: map_overlay_command - Mark the named section as mapped (ie. residing at its VMA address). */ - -void -map_overlay_command (char *args, int from_tty) -{ - struct objfile *objfile, *objfile2; - struct obj_section *sec, *sec2; - asection *bfdsec; - - if (!overlay_debugging) - error ("\ -Overlay debugging not enabled. Use either the 'overlay auto' or\n\ -the 'overlay manual' command."); - - if (args == 0 || *args == 0) - error ("Argument required: name of an overlay section"); - - /* First, find a section matching the user supplied argument */ - ALL_OBJSECTIONS (objfile, sec) - if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) - { - /* Now, check to see if the section is an overlay. */ - bfdsec = sec->the_bfd_section; - if (!section_is_overlay (bfdsec)) - continue; /* not an overlay section */ - - /* Mark the overlay as "mapped" */ - sec->ovly_mapped = 1; - - /* Next, make a pass and unmap any sections that are - overlapped by this new section: */ - ALL_OBJSECTIONS (objfile2, sec2) - if (sec2->ovly_mapped - && sec != sec2 - && sec->the_bfd_section != sec2->the_bfd_section - && sections_overlap (sec->the_bfd_section, - sec2->the_bfd_section)) - { - if (info_verbose) - printf_filtered ("Note: section %s unmapped by overlap\n", - bfd_section_name (objfile->obfd, - sec2->the_bfd_section)); - sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ - } - return; - } - error ("No overlay section called %s", args); -} - -/* Function: unmap_overlay_command - Mark the overlay section as unmapped - (ie. resident in its LMA address range, rather than the VMA range). */ - -void -unmap_overlay_command (char *args, int from_tty) -{ - struct objfile *objfile; - struct obj_section *sec; - - if (!overlay_debugging) - error ("\ -Overlay debugging not enabled. Use either the 'overlay auto' or\n\ -the 'overlay manual' command."); - - if (args == 0 || *args == 0) - error ("Argument required: name of an overlay section"); - - /* First, find a section matching the user supplied argument */ - ALL_OBJSECTIONS (objfile, sec) - if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) - { - if (!sec->ovly_mapped) - error ("Section %s is not mapped", args); - sec->ovly_mapped = 0; - return; - } - error ("No overlay section called %s", args); -} - -/* Function: overlay_auto_command - A utility command to turn on overlay debugging. - Possibly this should be done via a set/show command. */ - -static void -overlay_auto_command (char *args, int from_tty) -{ - overlay_debugging = ovly_auto; - enable_overlay_breakpoints (); - if (info_verbose) - printf_filtered ("Automatic overlay debugging enabled."); -} - -/* Function: overlay_manual_command - A utility command to turn on overlay debugging. - Possibly this should be done via a set/show command. */ - -static void -overlay_manual_command (char *args, int from_tty) -{ - overlay_debugging = ovly_on; - disable_overlay_breakpoints (); - if (info_verbose) - printf_filtered ("Overlay debugging enabled."); -} - -/* Function: overlay_off_command - A utility command to turn on overlay debugging. - Possibly this should be done via a set/show command. */ - -static void -overlay_off_command (char *args, int from_tty) -{ - overlay_debugging = ovly_off; - disable_overlay_breakpoints (); - if (info_verbose) - printf_filtered ("Overlay debugging disabled."); -} - -static void -overlay_load_command (char *args, int from_tty) -{ - if (target_overlay_update) - (*target_overlay_update) (NULL); - else - error ("This target does not know how to read its overlay state."); -} - -/* Function: overlay_command - A place-holder for a mis-typed command */ - -/* Command list chain containing all defined "overlay" subcommands. */ -struct cmd_list_element *overlaylist; - -static void -overlay_command (char *args, int from_tty) -{ - printf_unfiltered - ("\"overlay\" must be followed by the name of an overlay command.\n"); - help_list (overlaylist, "overlay ", -1, gdb_stdout); -} - - -/* Target Overlays for the "Simplest" overlay manager: - - This is GDB's default target overlay layer. It works with the - minimal overlay manager supplied as an example by Cygnus. The - entry point is via a function pointer "target_overlay_update", - so targets that use a different runtime overlay manager can - substitute their own overlay_update function and take over the - function pointer. - - The overlay_update function pokes around in the target's data structures - to see what overlays are mapped, and updates GDB's overlay mapping with - this information. - - In this simple implementation, the target data structures are as follows: - unsigned _novlys; /# number of overlay sections #/ - unsigned _ovly_table[_novlys][4] = { - {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ - {..., ..., ..., ...}, - } - unsigned _novly_regions; /# number of overlay regions #/ - unsigned _ovly_region_table[_novly_regions][3] = { - {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ - {..., ..., ...}, - } - These functions will attempt to update GDB's mappedness state in the - symbol section table, based on the target's mappedness state. - - To do this, we keep a cached copy of the target's _ovly_table, and - attempt to detect when the cached copy is invalidated. The main - entry point is "simple_overlay_update(SECT), which looks up SECT in - the cached table and re-reads only the entry for that section from - the target (whenever possible). - */ - -/* Cached, dynamically allocated copies of the target data structures: */ -static unsigned (*cache_ovly_table)[4] = 0; -#if 0 -static unsigned (*cache_ovly_region_table)[3] = 0; -#endif -static unsigned cache_novlys = 0; -#if 0 -static unsigned cache_novly_regions = 0; -#endif -static CORE_ADDR cache_ovly_table_base = 0; -#if 0 -static CORE_ADDR cache_ovly_region_table_base = 0; -#endif -enum ovly_index - { - VMA, SIZE, LMA, MAPPED - }; -#define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) - -/* Throw away the cached copy of _ovly_table */ -static void -simple_free_overlay_table (void) -{ - if (cache_ovly_table) - xfree (cache_ovly_table); - cache_novlys = 0; - cache_ovly_table = NULL; - cache_ovly_table_base = 0; -} - -#if 0 -/* Throw away the cached copy of _ovly_region_table */ -static void -simple_free_overlay_region_table (void) -{ - if (cache_ovly_region_table) - xfree (cache_ovly_region_table); - cache_novly_regions = 0; - cache_ovly_region_table = NULL; - cache_ovly_region_table_base = 0; -} -#endif - -/* Read an array of ints from the target into a local buffer. - Convert to host order. int LEN is number of ints */ -static void -read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) -{ - /* FIXME (alloca): Not safe if array is very large. */ - char *buf = alloca (len * TARGET_LONG_BYTES); - int i; - - read_memory (memaddr, buf, len * TARGET_LONG_BYTES); - for (i = 0; i < len; i++) - myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, - TARGET_LONG_BYTES); -} - -/* Find and grab a copy of the target _ovly_table - (and _novlys, which is needed for the table's size) */ -static int -simple_read_overlay_table (void) -{ - struct minimal_symbol *novlys_msym, *ovly_table_msym; - - simple_free_overlay_table (); - novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); - if (! novlys_msym) - { - error ("Error reading inferior's overlay table: " - "couldn't find `_novlys' variable\n" - "in inferior. Use `overlay manual' mode."); - return 0; - } - - ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); - if (! ovly_table_msym) - { - error ("Error reading inferior's overlay table: couldn't find " - "`_ovly_table' array\n" - "in inferior. Use `overlay manual' mode."); - return 0; - } - - cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); - cache_ovly_table - = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); - cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); - read_target_long_array (cache_ovly_table_base, - (int *) cache_ovly_table, - cache_novlys * 4); - - return 1; /* SUCCESS */ -} - -#if 0 -/* Find and grab a copy of the target _ovly_region_table - (and _novly_regions, which is needed for the table's size) */ -static int -simple_read_overlay_region_table (void) -{ - struct minimal_symbol *msym; - - simple_free_overlay_region_table (); - msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); - if (msym != NULL) - cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); - else - return 0; /* failure */ - cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); - if (cache_ovly_region_table != NULL) - { - msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); - if (msym != NULL) - { - cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); - read_target_long_array (cache_ovly_region_table_base, - (int *) cache_ovly_region_table, - cache_novly_regions * 3); - } - else - return 0; /* failure */ - } - else - return 0; /* failure */ - return 1; /* SUCCESS */ -} -#endif - -/* Function: simple_overlay_update_1 - A helper function for simple_overlay_update. Assuming a cached copy - of _ovly_table exists, look through it to find an entry whose vma, - lma and size match those of OSECT. Re-read the entry and make sure - it still matches OSECT (else the table may no longer be valid). - Set OSECT's mapped state to match the entry. Return: 1 for - success, 0 for failure. */ - -static int -simple_overlay_update_1 (struct obj_section *osect) -{ - int i, size; - bfd *obfd = osect->objfile->obfd; - asection *bsect = osect->the_bfd_section; - - size = bfd_get_section_size_before_reloc (osect->the_bfd_section); - for (i = 0; i < cache_novlys; i++) - if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) - && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) - /* && cache_ovly_table[i][SIZE] == size */ ) - { - read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, - (int *) cache_ovly_table[i], 4); - if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) - && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) - /* && cache_ovly_table[i][SIZE] == size */ ) - { - osect->ovly_mapped = cache_ovly_table[i][MAPPED]; - return 1; - } - else /* Warning! Warning! Target's ovly table has changed! */ - return 0; - } - return 0; -} - -/* Function: simple_overlay_update - If OSECT is NULL, then update all sections' mapped state - (after re-reading the entire target _ovly_table). - If OSECT is non-NULL, then try to find a matching entry in the - cached ovly_table and update only OSECT's mapped state. - If a cached entry can't be found or the cache isn't valid, then - re-read the entire cache, and go ahead and update all sections. */ - -static void -simple_overlay_update (struct obj_section *osect) -{ - struct objfile *objfile; - - /* Were we given an osect to look up? NULL means do all of them. */ - if (osect) - /* Have we got a cached copy of the target's overlay table? */ - if (cache_ovly_table != NULL) - /* Does its cached location match what's currently in the symtab? */ - if (cache_ovly_table_base == - SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) - /* Then go ahead and try to look up this single section in the cache */ - if (simple_overlay_update_1 (osect)) - /* Found it! We're done. */ - return; - - /* Cached table no good: need to read the entire table anew. - Or else we want all the sections, in which case it's actually - more efficient to read the whole table in one block anyway. */ - - if (! simple_read_overlay_table ()) - return; - - /* Now may as well update all sections, even if only one was requested. */ - ALL_OBJSECTIONS (objfile, osect) - if (section_is_overlay (osect->the_bfd_section)) - { - int i, size; - bfd *obfd = osect->objfile->obfd; - asection *bsect = osect->the_bfd_section; - - size = bfd_get_section_size_before_reloc (osect->the_bfd_section); - for (i = 0; i < cache_novlys; i++) - if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) - && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) - /* && cache_ovly_table[i][SIZE] == size */ ) - { /* obj_section matches i'th entry in ovly_table */ - osect->ovly_mapped = cache_ovly_table[i][MAPPED]; - break; /* finished with inner for loop: break out */ - } - } -} - - -void -_initialize_symfile (void) -{ - struct cmd_list_element *c; - - c = add_cmd ("symbol-file", class_files, symbol_file_command, - "Load symbol table from executable file FILE.\n\ -The `file' command can also load symbol tables, as well as setting the file\n\ -to execute.", &cmdlist); - set_cmd_completer (c, filename_completer); - - c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, - "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ -Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ -ADDR is the starting address of the file's text.\n\ -The optional arguments are section-name section-address pairs and\n\ -should be specified if the data and bss segments are not contiguous\n\ -with the text. SECT is a section name to be loaded at SECT_ADDR.", - &cmdlist); - set_cmd_completer (c, filename_completer); - - c = add_cmd ("add-shared-symbol-files", class_files, - add_shared_symbol_files_command, - "Load the symbols from shared objects in the dynamic linker's link map.", - &cmdlist); - c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, - &cmdlist); - - c = add_cmd ("load", class_files, load_command, - "Dynamically load FILE into the running program, and record its symbols\n\ -for access from GDB.", &cmdlist); - set_cmd_completer (c, filename_completer); - - add_show_from_set - (add_set_cmd ("symbol-reloading", class_support, var_boolean, - (char *) &symbol_reloading, - "Set dynamic symbol table reloading multiple times in one run.", - &setlist), - &showlist); - - add_prefix_cmd ("overlay", class_support, overlay_command, - "Commands for debugging overlays.", &overlaylist, - "overlay ", 0, &cmdlist); - - add_com_alias ("ovly", "overlay", class_alias, 1); - add_com_alias ("ov", "overlay", class_alias, 1); - - add_cmd ("map-overlay", class_support, map_overlay_command, - "Assert that an overlay section is mapped.", &overlaylist); - - add_cmd ("unmap-overlay", class_support, unmap_overlay_command, - "Assert that an overlay section is unmapped.", &overlaylist); - - add_cmd ("list-overlays", class_support, list_overlays_command, - "List mappings of overlay sections.", &overlaylist); - - add_cmd ("manual", class_support, overlay_manual_command, - "Enable overlay debugging.", &overlaylist); - add_cmd ("off", class_support, overlay_off_command, - "Disable overlay debugging.", &overlaylist); - add_cmd ("auto", class_support, overlay_auto_command, - "Enable automatic overlay debugging.", &overlaylist); - add_cmd ("load-target", class_support, overlay_load_command, - "Read the overlay mapping state from the target.", &overlaylist); - - /* Filename extension to source language lookup table: */ - init_filename_language_table (); - c = add_set_cmd ("extension-language", class_files, var_string_noescape, - (char *) &ext_args, - "Set mapping between filename extension and source language.\n\ -Usage: set extension-language .foo bar", - &setlist); - set_cmd_cfunc (c, set_ext_lang_command); - - add_info ("extensions", info_ext_lang_command, - "All filename extensions associated with a source language."); - - add_show_from_set - (add_set_cmd ("download-write-size", class_obscure, - var_integer, (char *) &download_write_size, - "Set the write size used when downloading a program.\n" - "Only used when downloading a program onto a remote\n" - "target. Specify zero, or a negative value, to disable\n" - "blocked writes. The actual size of each transfer is also\n" - "limited by the size of the target packet and the memory\n" - "cache.\n", - &setlist), - &showlist); -} |