diff options
Diffstat (limited to 'gdb/objfiles.c')
| -rw-r--r-- | gdb/objfiles.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/gdb/objfiles.c b/gdb/objfiles.c index 7fb53e7..541941a 100644 --- a/gdb/objfiles.c +++ b/gdb/objfiles.c @@ -60,6 +60,51 @@ struct objfile *symfile_objfile; /* Main symbol table loaded from */ 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. */ + +static void +add_to_objfile_sections (abfd, asect, objfile_p_char) + bfd *abfd; + sec_ptr asect; + PTR objfile_p_char; +{ + struct objfile *objfile = (struct objfile *) objfile_p_char; + struct obj_section section; + flagword aflag; + + aflag = bfd_get_section_flags (abfd, asect); + /* FIXME, we need to handle BSS segment here...it alloc's but doesn't load */ + if (!(aflag & SEC_LOAD)) + return; + if (0 == bfd_section_size (abfd, asect)) + return; + section.offset = 0; + section.sec_ptr = asect; + section.addr = bfd_section_vma (abfd, asect); + section.endaddr = section.addr + bfd_section_size (abfd, asect); + obstack_grow (&objfile->psymbol_obstack, §ion, sizeof(section)); + objfile->sections_end = (struct obj_section *) (((int) objfile->sections_end) + 1); +} + +/* Builds a section table for OBJFILE. + Returns 0 if OK, 1 on error. */ + +static int +build_objfile_section_table (objfile) + struct objfile *objfile; +{ + if (objfile->sections) + abort(); + + objfile->sections_end = 0; + bfd_map_over_sections (objfile->obfd, add_to_objfile_sections, (char *)objfile); + objfile->sections = obstack_finish (&objfile->psymbol_obstack); + objfile->sections_end = objfile->sections + (int) objfile->sections_end; + return(0); +} + /* Given a pointer to an initialized bfd (ABFD) and a flag that indicates whether or not an objfile is to be mapped (MAPPED), allocate a new objfile struct, fill it in as best we can, link it into the list of all known @@ -188,6 +233,14 @@ allocate_objfile (abfd, mapped) objfile -> name = mstrsave (objfile -> md, 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", + objfile -> name, bfd_errmsg (bfd_error)); + } + /* Push this file onto the head of the linked list of other such files. */ objfile -> next = object_files; @@ -658,3 +711,21 @@ map_to_address () } #endif /* !defined(NO_MMALLOC) && defined(HAVE_MMAP) */ + +/* Returns a section whose range includes PC or NULL if none found. */ + +sec_ptr +find_pc_section(pc) + CORE_ADDR pc; +{ + struct obj_section *s; + struct objfile *objfile; + + ALL_OBJFILES (objfile) + for (s = objfile->sections; s < objfile->sections_end; ++s) + if (s->addr <= pc + && pc < s->endaddr) + return(s->sec_ptr); + + return(NULL); +} |