X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fobjfiles.c;h=7fa2e8922c47c99a45063a80c94496a0334b74aa;hb=384e1a6106a6de8ed9e5df2cab4e90b62420902e;hp=f1c70fa1ba76b5485a7683082af649494d83c97e;hpb=27e232885db363fb545fd2f450e72d929e59b8f6;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/objfiles.c b/gdb/objfiles.c index f1c70fa1ba..7fa2e8922c 100644 --- a/gdb/objfiles.c +++ b/gdb/objfiles.c @@ -1,5 +1,8 @@ /* GDB routines for manipulating objfiles. - Copyright 1992, 1993, 1994, 1995 Free Software Foundation, Inc. + + Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, + 2001, 2002, 2003, 2004 Free Software Foundation, Inc. + Contributed by Cygnus Support, using pieces from other GDB modules. This file is part of GDB. @@ -29,28 +32,24 @@ #include "objfiles.h" #include "gdb-stabs.h" #include "target.h" - +#include "bcache.h" +#include "mdebugread.h" +#include "gdb_assert.h" #include #include "gdb_stat.h" #include -#include "obstack.h" +#include "gdb_obstack.h" #include "gdb_string.h" +#include "hashtab.h" #include "breakpoint.h" +#include "block.h" +#include "dictionary.h" /* Prototypes for local functions */ -#if defined(USE_MMALLOC) && defined(HAVE_MMAP) - -static int open_existing_mapped_file (char *, long, int); - -static int open_mapped_file (char *filename, long mtime, int flags); - -static PTR map_to_file (int); - -#endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */ - -static void add_to_objfile_sections (bfd *, sec_ptr, PTR); +static void objfile_alloc_data (struct objfile *objfile); +static void objfile_free_data (struct objfile *objfile); /* Externally visible variables that are owned by this module. See declarations in objfile.h for more info. */ @@ -60,8 +59,6 @@ struct objfile *current_objfile; /* For symbol file being read in */ struct objfile *symfile_objfile; /* Main symbol table loaded from */ struct objfile *rt_common_objfile; /* For runtime common symbols */ -int mapped_symbol_files; /* Try to use mapped symbol files */ - /* Locate all mappable sections of a BFD file. objfile_p_char is a char * to get it through bfd_map_over_sections; we cast it back to its proper type. */ @@ -76,10 +73,8 @@ int mapped_symbol_files; /* Try to use mapped symbol files */ the end of the table (objfile->sections_end). */ static void -add_to_objfile_sections (abfd, asect, objfile_p_char) - bfd *abfd; - sec_ptr asect; - PTR objfile_p_char; +add_to_objfile_sections (struct bfd *abfd, struct bfd_section *asect, + void *objfile_p_char) { struct objfile *objfile = (struct objfile *) objfile_p_char; struct obj_section section; @@ -98,7 +93,7 @@ add_to_objfile_sections (abfd, asect, objfile_p_char) section.ovly_mapped = 0; section.addr = bfd_section_vma (abfd, asect); section.endaddr = section.addr + bfd_section_size (abfd, asect); - obstack_grow (&objfile->psymbol_obstack, (char *) §ion, sizeof (section)); + obstack_grow (&objfile->objfile_obstack, (char *) §ion, sizeof (section)); objfile->sections_end = (struct obj_section *) (((unsigned long) objfile->sections_end) + 1); } @@ -119,19 +114,18 @@ add_to_objfile_sections (abfd, asect, objfile_p_char) we are building the table, we're pretty much hosed. */ int -build_objfile_section_table (objfile) - struct objfile *objfile; +build_objfile_section_table (struct objfile *objfile) { /* objfile->sections can be already set when reading a mapped symbol file. I believe that we do need to rebuild the section table in this case (we rebuild other things derived from the bfd), but we - can't free the old one (it's in the psymbol_obstack). So we just + can't free the old one (it's in the objfile_obstack). So we just waste some memory. */ objfile->sections_end = 0; bfd_map_over_sections (objfile->obfd, add_to_objfile_sections, (char *) objfile); objfile->sections = (struct obj_section *) - obstack_finish (&objfile->psymbol_obstack); + obstack_finish (&objfile->objfile_obstack); objfile->sections_end = objfile->sections + (unsigned long) objfile->sections_end; return (0); } @@ -142,122 +136,24 @@ build_objfile_section_table (objfile) new objfile struct. The FLAGS word contains various bits (OBJF_*) that can be taken as - requests for specific operations, like trying to open a mapped - version of the objfile (OBJF_MAPPED). Other bits like - OBJF_SHARED are simply copied through to the new objfile flags - member. */ + requests for specific operations. Other bits like OBJF_SHARED are + simply copied through to the new objfile flags member. */ + +/* NOTE: carlton/2003-02-04: This function is called with args NULL, 0 + by jv-lang.c, to create an artificial objfile used to hold + information about dynamically-loaded Java classes. Unfortunately, + that branch of this function doesn't get tested very frequently, so + it's prone to breakage. (E.g. at one time the name was set to NULL + in that situation, which broke a loop over all names in the dynamic + library loader.) If you change this function, please try to leave + things in a consistent state even if abfd is NULL. */ struct objfile * -allocate_objfile (abfd, flags) - bfd *abfd; - int flags; +allocate_objfile (bfd *abfd, int flags) { struct objfile *objfile = NULL; struct objfile *last_one = NULL; - if (mapped_symbol_files) - flags |= OBJF_MAPPED; - -#if defined(USE_MMALLOC) && defined(HAVE_MMAP) - if (abfd != NULL) - { - - /* If we can support mapped symbol files, try to open/reopen the - mapped file that corresponds to the file from which we wish to - read symbols. If the objfile is to be mapped, we must malloc - the structure itself using the mmap version, and arrange that - all memory allocation for the objfile uses the mmap routines. - If we are reusing an existing mapped file, from which we get - our objfile pointer, we have to make sure that we update the - pointers to the alloc/free functions in the obstack, in case - these functions have moved within the current gdb. */ - - int fd; - - fd = open_mapped_file (bfd_get_filename (abfd), bfd_get_mtime (abfd), - flags); - if (fd >= 0) - { - PTR md; - - if ((md = map_to_file (fd)) == NULL) - { - close (fd); - } - else if ((objfile = (struct objfile *) mmalloc_getkey (md, 0)) != NULL) - { - /* Update memory corruption handler function addresses. */ - init_malloc (md); - objfile->md = md; - objfile->mmfd = fd; - /* Update pointers to functions to *our* copies */ - obstack_chunkfun (&objfile->psymbol_cache.cache, xmmalloc); - obstack_freefun (&objfile->psymbol_cache.cache, mfree); - obstack_chunkfun (&objfile->psymbol_obstack, xmmalloc); - obstack_freefun (&objfile->psymbol_obstack, mfree); - obstack_chunkfun (&objfile->symbol_obstack, xmmalloc); - obstack_freefun (&objfile->symbol_obstack, mfree); - obstack_chunkfun (&objfile->type_obstack, xmmalloc); - obstack_freefun (&objfile->type_obstack, mfree); - /* If already in objfile list, unlink it. */ - unlink_objfile (objfile); - /* Forget things specific to a particular gdb, may have changed. */ - objfile->sf = NULL; - } - else - { - - /* Set up to detect internal memory corruption. MUST be - done before the first malloc. See comments in - init_malloc() and mmcheck(). */ - - init_malloc (md); - - objfile = (struct objfile *) - xmmalloc (md, sizeof (struct objfile)); - memset (objfile, 0, sizeof (struct objfile)); - objfile->md = md; - objfile->mmfd = fd; - objfile->flags |= OBJF_MAPPED; - mmalloc_setkey (objfile->md, 0, objfile); - obstack_specify_allocation_with_arg (&objfile->psymbol_cache.cache, - 0, 0, xmmalloc, mfree, - objfile->md); - obstack_specify_allocation_with_arg (&objfile->psymbol_obstack, - 0, 0, xmmalloc, mfree, - objfile->md); - obstack_specify_allocation_with_arg (&objfile->symbol_obstack, - 0, 0, xmmalloc, mfree, - objfile->md); - obstack_specify_allocation_with_arg (&objfile->type_obstack, - 0, 0, xmmalloc, mfree, - objfile->md); - } - } - - if ((flags & OBJF_MAPPED) && (objfile == NULL)) - { - warning ("symbol table for '%s' will not be mapped", - bfd_get_filename (abfd)); - flags &= ~OBJF_MAPPED; - } - } -#else /* !defined(USE_MMALLOC) || !defined(HAVE_MMAP) */ - - if (flags & OBJF_MAPPED) - { - warning ("mapped symbol tables are not supported on this machine; missing or broken mmap()."); - - /* Turn off the global flag so we don't try to do mapped symbol tables - any more, which shuts up gdb unless the user specifically gives the - "mapped" keyword again. */ - - mapped_symbol_files = 0; - flags &= ~OBJF_MAPPED; - } - -#endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */ - /* If we don't support mapped symbol files, didn't ask for the file to be mapped, or failed to open the mapped file for some reason, then revert back to an unmapped objfile. */ @@ -267,17 +163,16 @@ allocate_objfile (abfd, flags) objfile = (struct objfile *) xmalloc (sizeof (struct objfile)); memset (objfile, 0, sizeof (struct objfile)); objfile->md = NULL; - obstack_specify_allocation (&objfile->psymbol_cache.cache, 0, 0, - xmalloc, free); - obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, xmalloc, - free); - obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, xmalloc, - free); - obstack_specify_allocation (&objfile->type_obstack, 0, 0, xmalloc, - free); - flags &= ~OBJF_MAPPED; + objfile->psymbol_cache = bcache_xmalloc (); + objfile->macro_cache = bcache_xmalloc (); + /* We could use obstack_specify_allocation here instead, but + gdb_obstack.h specifies the alloc/dealloc functions. */ + obstack_init (&objfile->objfile_obstack); + terminate_minimal_symbol_table (objfile); } + objfile_alloc_data (objfile); + /* Update the per-objfile information that comes from the bfd, ensuring that any data that is reference is saved in the per-objfile data region. */ @@ -285,29 +180,37 @@ allocate_objfile (abfd, flags) objfile->obfd = abfd; if (objfile->name != NULL) { - mfree (objfile->md, objfile->name); + xfree (objfile->name); } if (abfd != NULL) { - objfile->name = mstrsave (objfile->md, bfd_get_filename (abfd)); + objfile->name = xstrdup (bfd_get_filename (abfd)); objfile->mtime = bfd_get_mtime (abfd); /* Build section table. */ if (build_objfile_section_table (objfile)) { - error ("Can't find the file sections in `%s': %s", + error (_("Can't find the file sections in `%s': %s"), objfile->name, bfd_errmsg (bfd_get_error ())); } } + else + { + objfile->name = xstrdup ("<>"); + } /* Initialize the section indexes for this objfile, so that we can later detect if they are used w/o being properly assigned to. */ - objfile->sect_index_text = -1; - objfile->sect_index_data = -1; - objfile->sect_index_bss = -1; - objfile->sect_index_rodata = -1; + objfile->sect_index_text = -1; + objfile->sect_index_data = -1; + objfile->sect_index_bss = -1; + objfile->sect_index_rodata = -1; + + /* We don't yet have a C++-specific namespace symtab. */ + + objfile->cp_namespace_symtab = NULL; /* Add this file onto the tail of the linked list of other such files. */ @@ -328,11 +231,87 @@ allocate_objfile (abfd, flags) return (objfile); } +/* 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; + } +} + +/* Get current entry point address. */ + +CORE_ADDR +entry_point_address (void) +{ + return symfile_objfile ? symfile_objfile->ei.entry_point : 0; +} + +/* Create the terminating entry of OBJFILE's minimal symbol table. + If OBJFILE->msymbols is zero, allocate a single entry from + OBJFILE->objfile_obstack; otherwise, just initialize + OBJFILE->msymbols[OBJFILE->minimal_symbol_count]. */ +void +terminate_minimal_symbol_table (struct objfile *objfile) +{ + if (! objfile->msymbols) + objfile->msymbols = ((struct minimal_symbol *) + obstack_alloc (&objfile->objfile_obstack, + sizeof (objfile->msymbols[0]))); + + { + struct minimal_symbol *m + = &objfile->msymbols[objfile->minimal_symbol_count]; + + memset (m, 0, sizeof (*m)); + /* Don't rely on these enumeration values being 0's. */ + MSYMBOL_TYPE (m) = mst_unknown; + SYMBOL_INIT_LANGUAGE_SPECIFIC (m, language_unknown); + } +} + + +/* Put one object file before a specified on in the global list. + This can be used to make sure an object file is destroyed before + another when using ALL_OBJFILES_SAFE to free all objfiles. */ +void +put_objfile_before (struct objfile *objfile, struct objfile *before_this) +{ + struct objfile **objp; + + unlink_objfile (objfile); + + for (objp = &object_files; *objp != NULL; objp = &((*objp)->next)) + { + if (*objp == before_this) + { + objfile->next = *objp; + *objp = objfile; + return; + } + } + + internal_error (__FILE__, __LINE__, + _("put_objfile_before: before objfile not in list")); +} + /* Put OBJFILE at the front of the list. */ void -objfile_to_front (objfile) - struct objfile *objfile; +objfile_to_front (struct objfile *objfile) { struct objfile **objp; for (objp = &object_files; *objp != NULL; objp = &((*objp)->next)) @@ -363,8 +342,7 @@ objfile_to_front (objfile) between the OBJFILE and the list. */ void -unlink_objfile (objfile) - struct objfile *objfile; +unlink_objfile (struct objfile *objfile) { struct objfile **objpp; @@ -378,13 +356,14 @@ unlink_objfile (objfile) } } - internal_error ("objfiles.c (unlink_objfile): objfile already unlinked"); + internal_error (__FILE__, __LINE__, + _("unlink_objfile: objfile already unlinked")); } /* Destroy an objfile and all the symtabs and psymtabs under it. Note - that as much as possible is allocated on the symbol_obstack and - psymbol_obstack, so that the memory can be efficiently freed. + that as much as possible is allocated on the objfile_obstack + so that the memory can be efficiently freed. Things which we do NOT free because they are not in malloc'd memory or not in memory specific to the objfile include: @@ -399,9 +378,20 @@ unlink_objfile (objfile) we free objects in the reusable area. */ void -free_objfile (objfile) - struct objfile *objfile; +free_objfile (struct objfile *objfile) { + if (objfile->separate_debug_objfile) + { + free_objfile (objfile->separate_debug_objfile); + } + + if (objfile->separate_debug_objfile_backlink) + { + /* We freed the separate debug file, make sure the base objfile + doesn't reference it. */ + objfile->separate_debug_objfile_backlink->separate_debug_objfile = NULL; + } + /* First do any symbol file specific actions required when we are finished with a particular symbol file. Note that if the objfile is using reusable symbol information (via mmalloc) then each of @@ -420,9 +410,9 @@ free_objfile (objfile) { char *name = bfd_get_filename (objfile->obfd); if (!bfd_close (objfile->obfd)) - warning ("cannot close \"%s\": %s", + warning (_("cannot close \"%s\": %s"), name, bfd_errmsg (bfd_get_error ())); - free (name); + xfree (name); } /* Remove it from the chain of all objfiles. */ @@ -446,48 +436,25 @@ free_objfile (objfile) to call this here. */ clear_pc_function_cache (); - /* The last thing we do is free the objfile struct itself for the - non-reusable case, or detach from the mapped file for the reusable - case. Note that the mmalloc_detach or the mfree is the last thing - we can do with this objfile. */ - -#if defined(USE_MMALLOC) && defined(HAVE_MMAP) + /* The last thing we do is free the objfile struct itself. */ - if (objfile->flags & OBJF_MAPPED) + objfile_free_data (objfile); + if (objfile->name != NULL) { - /* Remember the fd so we can close it. We can't close it before - doing the detach, and after the detach the objfile is gone. */ - int mmfd; - - mmfd = objfile->mmfd; - mmalloc_detach (objfile->md); - objfile = NULL; - close (mmfd); - } - -#endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */ - - /* If we still have an objfile, then either we don't support reusable - objfiles or this one was not reusable. So free it normally. */ - - if (objfile != NULL) - { - if (objfile->name != NULL) - { - mfree (objfile->md, objfile->name); - } - if (objfile->global_psymbols.list) - mfree (objfile->md, objfile->global_psymbols.list); - if (objfile->static_psymbols.list) - mfree (objfile->md, objfile->static_psymbols.list); - /* Free the obstacks for non-reusable objfiles */ - free_bcache (&objfile->psymbol_cache); - obstack_free (&objfile->psymbol_obstack, 0); - obstack_free (&objfile->symbol_obstack, 0); - obstack_free (&objfile->type_obstack, 0); - mfree (objfile->md, objfile); - objfile = NULL; + xfree (objfile->name); } + if (objfile->global_psymbols.list) + xfree (objfile->global_psymbols.list); + if (objfile->static_psymbols.list) + xfree (objfile->static_psymbols.list); + /* Free the obstacks for non-reusable objfiles */ + bcache_xfree (objfile->psymbol_cache); + bcache_xfree (objfile->macro_cache); + if (objfile->demangled_names_hash) + htab_delete (objfile->demangled_names_hash); + obstack_free (&objfile->objfile_obstack, 0); + xfree (objfile); + objfile = NULL; } static void @@ -505,7 +472,7 @@ make_cleanup_free_objfile (struct objfile *obj) /* Free all the object files at once and clean up their users. */ void -free_all_objfiles () +free_all_objfiles (void) { struct objfile *objfile, *temp; @@ -519,19 +486,18 @@ free_all_objfiles () /* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS entries in new_offsets. */ void -objfile_relocate (objfile, new_offsets) - struct objfile *objfile; - struct section_offsets *new_offsets; +objfile_relocate (struct objfile *objfile, struct section_offsets *new_offsets) { struct section_offsets *delta = - (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); + ((struct section_offsets *) + alloca (SIZEOF_N_SECTION_OFFSETS (objfile->num_sections))); { int i; int something_changed = 0; for (i = 0; i < objfile->num_sections; ++i) { - ANOFFSET (delta, i) = + delta->offsets[i] = ANOFFSET (new_offsets, i) - ANOFFSET (objfile->section_offsets, i); if (ANOFFSET (delta, i) != 0) something_changed = 1; @@ -566,17 +532,19 @@ objfile_relocate (objfile, new_offsets) for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); ++i) { struct block *b; - int j; + struct symbol *sym; + struct dict_iterator iter; b = BLOCKVECTOR_BLOCK (bv, i); BLOCK_START (b) += ANOFFSET (delta, s->block_line_section); BLOCK_END (b) += ANOFFSET (delta, s->block_line_section); - for (j = 0; j < BLOCK_NSYMS (b); ++j) + ALL_BLOCK_SYMBOLS (b, iter, sym) { - struct symbol *sym = BLOCK_SYM (b, j); + fixup_symbol_section (sym, objfile); + /* The RS6000 code from which this was taken skipped - any symbols in STRUCT_NAMESPACE or UNDEF_NAMESPACE. + any symbols in STRUCT_DOMAIN or UNDEF_DOMAIN. But I'm leaving out that test, on the theory that they can't possibly pass the tests below. */ if ((SYMBOL_CLASS (sym) == LOC_LABEL @@ -587,15 +555,6 @@ objfile_relocate (objfile, new_offsets) SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (delta, SYMBOL_SECTION (sym)); } -#ifdef MIPS_EFI_SYMBOL_NAME - /* Relocate Extra Function Info for ecoff. */ - - else if (SYMBOL_CLASS (sym) == LOC_CONST - && SYMBOL_NAMESPACE (sym) == LABEL_NAMESPACE - && STRCMP (SYMBOL_NAME (sym), MIPS_EFI_SYMBOL_NAME) == 0) - ecoff_relocate_efi (sym, ANOFFSET (delta, - s->block_line_section)); -#endif } } } @@ -617,15 +576,21 @@ objfile_relocate (objfile, new_offsets) for (psym = objfile->global_psymbols.list; psym < objfile->global_psymbols.next; psym++) - if (SYMBOL_SECTION (*psym) >= 0) - SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, - SYMBOL_SECTION (*psym)); + { + fixup_psymbol_section (*psym, objfile); + if (SYMBOL_SECTION (*psym) >= 0) + SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, + SYMBOL_SECTION (*psym)); + } for (psym = objfile->static_psymbols.list; psym < objfile->static_psymbols.next; psym++) - if (SYMBOL_SECTION (*psym) >= 0) - SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, - SYMBOL_SECTION (*psym)); + { + fixup_psymbol_section (*psym, objfile); + if (SYMBOL_SECTION (*psym) >= 0) + SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, + SYMBOL_SECTION (*psym)); + } } { @@ -641,9 +606,21 @@ objfile_relocate (objfile, new_offsets) { int i; for (i = 0; i < objfile->num_sections; ++i) - ANOFFSET (objfile->section_offsets, i) = ANOFFSET (new_offsets, i); + (objfile->section_offsets)->offsets[i] = ANOFFSET (new_offsets, i); } + if (objfile->ei.entry_point != ~(CORE_ADDR) 0) + { + /* Relocate ei.entry_point with its section offset, use SECT_OFF_TEXT + only as a fallback. */ + struct obj_section *s; + s = find_pc_section (objfile->ei.entry_point); + if (s) + objfile->ei.entry_point += ANOFFSET (delta, s->the_bfd_section->index); + else + objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); + } + { struct obj_section *s; bfd *abfd; @@ -652,49 +629,13 @@ objfile_relocate (objfile, new_offsets) ALL_OBJFILE_OSECTIONS (objfile, s) { - flagword flags; - - flags = bfd_get_section_flags (abfd, s->the_bfd_section); - - if (flags & SEC_CODE) - { - s->addr += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); - s->endaddr += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); - } - else if (flags & (SEC_DATA | SEC_LOAD)) - { - s->addr += ANOFFSET (delta, SECT_OFF_DATA (objfile)); - s->endaddr += ANOFFSET (delta, SECT_OFF_DATA (objfile)); - } - else if (flags & SEC_ALLOC) - { - s->addr += ANOFFSET (delta, SECT_OFF_BSS (objfile)); - s->endaddr += ANOFFSET (delta, SECT_OFF_BSS (objfile)); - } + int idx = s->the_bfd_section->index; + + s->addr += ANOFFSET (delta, idx); + s->endaddr += ANOFFSET (delta, idx); } } - if (objfile->ei.entry_point != ~(CORE_ADDR) 0) - objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); - - if (objfile->ei.entry_func_lowpc != INVALID_ENTRY_LOWPC) - { - objfile->ei.entry_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); - objfile->ei.entry_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); - } - - if (objfile->ei.entry_file_lowpc != INVALID_ENTRY_LOWPC) - { - objfile->ei.entry_file_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); - objfile->ei.entry_file_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); - } - - if (objfile->ei.main_func_lowpc != INVALID_ENTRY_LOWPC) - { - objfile->ei.main_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); - objfile->ei.main_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); - } - /* Relocate breakpoints as necessary, after things are relocated. */ breakpoint_re_set (); } @@ -704,7 +645,7 @@ objfile_relocate (objfile, new_offsets) available, nonzero otherwise. */ int -have_partial_symbols () +have_partial_symbols (void) { struct objfile *ofp; @@ -723,7 +664,7 @@ have_partial_symbols () available, nonzero otherwise. */ int -have_full_symbols () +have_full_symbols (void) { struct objfile *ofp; @@ -743,7 +684,7 @@ have_full_symbols () command. */ void -objfile_purge_solibs () +objfile_purge_solibs (void) { struct objfile *objf; struct objfile *temp; @@ -764,13 +705,13 @@ objfile_purge_solibs () available, nonzero otherwise. */ int -have_minimal_symbols () +have_minimal_symbols (void) { struct objfile *ofp; ALL_OBJFILES (ofp) { - if (ofp->msymbols != NULL) + if (ofp->minimal_symbol_count > 0) { return 1; } @@ -778,185 +719,14 @@ have_minimal_symbols () return 0; } -#if defined(USE_MMALLOC) && defined(HAVE_MMAP) - -/* Given the name of a mapped symbol file in SYMSFILENAME, and the timestamp - of the corresponding symbol file in MTIME, try to open an existing file - with the name SYMSFILENAME and verify it is more recent than the base - file by checking it's timestamp against MTIME. - - If SYMSFILENAME does not exist (or can't be stat'd), simply returns -1. - - If SYMSFILENAME does exist, but is out of date, we check to see if the - user has specified creation of a mapped file. If so, we don't issue - any warning message because we will be creating a new mapped file anyway, - overwriting the old one. If not, then we issue a warning message so that - the user will know why we aren't using this existing mapped symbol file. - In either case, we return -1. - - If SYMSFILENAME does exist and is not out of date, but can't be opened for - some reason, then prints an appropriate system error message and returns -1. - - Otherwise, returns the open file descriptor. */ - -static int -open_existing_mapped_file (symsfilename, mtime, flags) - char *symsfilename; - long mtime; - int flags; -{ - int fd = -1; - struct stat sbuf; - - if (stat (symsfilename, &sbuf) == 0) - { - if (sbuf.st_mtime < mtime) - { - if (!(flags & OBJF_MAPPED)) - { - warning ("mapped symbol file `%s' is out of date, ignored it", - symsfilename); - } - } - else if ((fd = open (symsfilename, O_RDWR)) < 0) - { - if (error_pre_print) - { - printf_unfiltered (error_pre_print); - } - print_sys_errmsg (symsfilename, errno); - } - } - return (fd); -} - -/* Look for a mapped symbol file that corresponds to FILENAME and is more - recent than MTIME. If MAPPED is nonzero, the user has asked that gdb - use a mapped symbol file for this file, so create a new one if one does - not currently exist. - - If found, then return an open file descriptor for the file, otherwise - return -1. - - This routine is responsible for implementing the policy that generates - the name of the mapped symbol file from the name of a file containing - symbols that gdb would like to read. Currently this policy is to append - ".syms" to the name of the file. - - This routine is also responsible for implementing the policy that - determines where the mapped symbol file is found (the search path). - This policy is that when reading an existing mapped file, a file of - the correct name in the current directory takes precedence over a - file of the correct name in the same directory as the symbol file. - When creating a new mapped file, it is always created in the current - directory. This helps to minimize the chances of a user unknowingly - creating big mapped files in places like /bin and /usr/local/bin, and - allows a local copy to override a manually installed global copy (in - /bin for example). */ - -static int -open_mapped_file (filename, mtime, flags) - char *filename; - long mtime; - int flags; -{ - int fd; - char *symsfilename; - - /* First try to open an existing file in the current directory, and - then try the directory where the symbol file is located. */ - - symsfilename = concat ("./", basename (filename), ".syms", (char *) NULL); - if ((fd = open_existing_mapped_file (symsfilename, mtime, flags)) < 0) - { - free (symsfilename); - symsfilename = concat (filename, ".syms", (char *) NULL); - fd = open_existing_mapped_file (symsfilename, mtime, flags); - } - - /* If we don't have an open file by now, then either the file does not - already exist, or the base file has changed since it was created. In - either case, if the user has specified use of a mapped file, then - create a new mapped file, truncating any existing one. If we can't - create one, print a system error message saying why we can't. - - By default the file is rw for everyone, with the user's umask taking - care of turning off the permissions the user wants off. */ - - if ((fd < 0) && (flags & OBJF_MAPPED)) - { - free (symsfilename); - symsfilename = concat ("./", basename (filename), ".syms", - (char *) NULL); - if ((fd = open (symsfilename, O_RDWR | O_CREAT | O_TRUNC, 0666)) < 0) - { - if (error_pre_print) - { - printf_unfiltered (error_pre_print); - } - print_sys_errmsg (symsfilename, errno); - } - } - - free (symsfilename); - return (fd); -} - -static PTR -map_to_file (fd) - int fd; -{ - PTR md; - CORE_ADDR mapto; - - md = mmalloc_attach (fd, (PTR) 0); - if (md != NULL) - { - mapto = (CORE_ADDR) mmalloc_getkey (md, 1); - md = mmalloc_detach (md); - if (md != NULL) - { - /* FIXME: should figure out why detach failed */ - md = NULL; - } - else if (mapto != (CORE_ADDR) NULL) - { - /* This mapping file needs to be remapped at "mapto" */ - md = mmalloc_attach (fd, (PTR) mapto); - } - else - { - /* This is a freshly created mapping file. */ - mapto = (CORE_ADDR) mmalloc_findbase (20 * 1024 * 1024); - if (mapto != 0) - { - /* To avoid reusing the freshly created mapping file, at the - address selected by mmap, we must truncate it before trying - to do an attach at the address we want. */ - ftruncate (fd, 0); - md = mmalloc_attach (fd, (PTR) mapto); - if (md != NULL) - { - mmalloc_setkey (md, 1, (PTR) mapto); - } - } - } - } - return (md); -} - -#endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */ - -/* Returns a section whose range includes PC and SECTION, - or NULL if none found. Note the distinction between the return type, - struct obj_section (which is defined in gdb), and the input type - struct sec (which is a bfd-defined data type). The obj_section - contains a pointer to the bfd struct sec section. */ +/* Returns a section whose range includes PC and SECTION, or NULL if + none found. Note the distinction between the return type, struct + obj_section (which is defined in gdb), and the input type "struct + bfd_section" (which is a bfd-defined data type). The obj_section + contains a pointer to the "struct bfd_section". */ struct obj_section * -find_pc_sect_section (pc, section) - CORE_ADDR pc; - struct sec *section; +find_pc_sect_section (CORE_ADDR pc, struct bfd_section *section) { struct obj_section *s; struct objfile *objfile; @@ -973,8 +743,7 @@ find_pc_sect_section (pc, section) Backward compatibility, no section. */ struct obj_section * -find_pc_section (pc) - CORE_ADDR pc; +find_pc_section (CORE_ADDR pc) { return find_pc_sect_section (pc, find_pc_mapped_section (pc)); } @@ -985,9 +754,7 @@ find_pc_section (pc) a trampoline. */ int -in_plt_section (pc, name) - CORE_ADDR pc; - char *name; +in_plt_section (CORE_ADDR pc, char *name) { struct obj_section *s; int retval = 0; @@ -996,7 +763,7 @@ in_plt_section (pc, name) retval = (s != NULL && s->the_bfd_section->name != NULL - && STREQ (s->the_bfd_section->name, ".plt")); + && strcmp (s->the_bfd_section->name, ".plt") == 0); return (retval); } @@ -1004,18 +771,93 @@ in_plt_section (pc, name) return zero. */ int -is_in_import_list (name, objfile) - char *name; - struct objfile *objfile; +is_in_import_list (char *name, struct objfile *objfile) { - register int i; + int i; if (!objfile || !name || !*name) return 0; for (i = 0; i < objfile->import_list_size; i++) - if (objfile->import_list[i] && STREQ (name, objfile->import_list[i])) + if (objfile->import_list[i] && DEPRECATED_STREQ (name, objfile->import_list[i])) return 1; return 0; } + + +/* Keep a registry of per-objfile data-pointers required by other GDB + modules. */ + +struct objfile_data +{ + unsigned index; +}; + +struct objfile_data_registration +{ + struct objfile_data *data; + struct objfile_data_registration *next; +}; + +struct objfile_data_registry +{ + struct objfile_data_registration *registrations; + unsigned num_registrations; +}; + +static struct objfile_data_registry objfile_data_registry = { NULL, 0 }; +const struct objfile_data * +register_objfile_data (void) +{ + struct objfile_data_registration **curr; + + /* Append new registration. */ + for (curr = &objfile_data_registry.registrations; + *curr != NULL; curr = &(*curr)->next); + + *curr = XMALLOC (struct objfile_data_registration); + (*curr)->next = NULL; + (*curr)->data = XMALLOC (struct objfile_data); + (*curr)->data->index = objfile_data_registry.num_registrations++; + + return (*curr)->data; +} + +static void +objfile_alloc_data (struct objfile *objfile) +{ + gdb_assert (objfile->data == NULL); + objfile->num_data = objfile_data_registry.num_registrations; + objfile->data = XCALLOC (objfile->num_data, void *); +} + +static void +objfile_free_data (struct objfile *objfile) +{ + gdb_assert (objfile->data != NULL); + xfree (objfile->data); + objfile->data = NULL; +} + +void +clear_objfile_data (struct objfile *objfile) +{ + gdb_assert (objfile->data != NULL); + memset (objfile->data, 0, objfile->num_data * sizeof (void *)); +} + +void +set_objfile_data (struct objfile *objfile, const struct objfile_data *data, + void *value) +{ + gdb_assert (data->index < objfile->num_data); + objfile->data[data->index] = value; +} + +void * +objfile_data (struct objfile *objfile, const struct objfile_data *data) +{ + gdb_assert (data->index < objfile->num_data); + return objfile->data[data->index]; +}