#include "symtab.h"
#include "symfile.h"
#include "objfiles.h"
+#include "gdb-stabs.h"
+#include "target.h"
#include <sys/types.h>
#include <sys/stat.h>
/* Prototypes for local functions */
+#if !defined(NO_MMALLOC) && defined(HAVE_MMAP)
+
+static int
+open_existing_mapped_file PARAMS ((char *, long, int));
+
static int
open_mapped_file PARAMS ((char *filename, long mtime, int mapped));
static CORE_ADDR
map_to_address PARAMS ((void));
+#endif /* !defined(NO_MMALLOC) && defined(HAVE_MMAP) */
+
+/* Message to be printed before the error message, when an error occurs. */
+
+extern char *error_pre_print;
+
/* Externally visible variables that are owned by this module.
See declarations in objfile.h for more info. */
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.objfile = objfile;
+ 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 *) (((unsigned long) objfile->sections_end) + 1);
+}
+
+/* Builds a section table for OBJFILE.
+ Returns 0 if OK, 1 on error (in which case bfd_error contains the
+ error). */
+
+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 = (struct obj_section *)
+ obstack_finish (&objfile->psymbol_obstack);
+ objfile->sections_end = objfile->sections + (unsigned long) 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
int mapped;
{
struct objfile *objfile = NULL;
- int fd;
- void *md;
- CORE_ADDR mapto;
mapped |= mapped_symbol_files;
#if !defined(NO_MMALLOC) && defined(HAVE_MMAP)
-
- /* 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. */
-
- fd = open_mapped_file (bfd_get_filename (abfd), bfd_get_mtime (abfd),
- mapped);
- if (fd >= 0)
- {
- if (((mapto = map_to_address ()) == 0) ||
- ((md = mmalloc_attach (fd, (void *) mapto)) == 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;
- /* Update pointers to functions to *our* copies */
- 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);
- }
- 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));
- (void) memset (objfile, 0, sizeof (struct objfile));
- objfile -> md = md;
- objfile -> flags |= OBJF_MAPPED;
- mmalloc_setkey (objfile -> md, 0, objfile);
- obstack_full_begin (&objfile -> psymbol_obstack, 0, 0,
- xmmalloc, mfree, objfile -> md,
- OBSTACK_MMALLOC_LIKE);
- obstack_full_begin (&objfile -> symbol_obstack, 0, 0,
- xmmalloc, mfree, objfile -> md,
- OBSTACK_MMALLOC_LIKE);
- obstack_full_begin (&objfile -> type_obstack, 0, 0,
- xmmalloc, mfree, objfile -> md,
- OBSTACK_MMALLOC_LIKE);
- }
- }
-
- if (mapped && (objfile == NULL))
- {
- warning ("symbol table for '%s' will not be mapped",
- bfd_get_filename (abfd));
- }
-
+ {
+
+ /* 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),
+ mapped);
+ if (fd >= 0)
+ {
+ CORE_ADDR mapto;
+ PTR md;
+
+ if (((mapto = map_to_address ()) == 0) ||
+ ((md = mmalloc_attach (fd, (PTR) mapto)) == 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_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_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 (mapped && (objfile == NULL))
+ {
+ warning ("symbol table for '%s' will not be mapped",
+ bfd_get_filename (abfd));
+ }
+ }
#else /* defined(NO_MMALLOC) || !defined(HAVE_MMAP) */
if (mapped)
if (objfile == NULL)
{
objfile = (struct objfile *) xmalloc (sizeof (struct objfile));
- (void) memset (objfile, 0, sizeof (struct objfile));
+ memset (objfile, 0, sizeof (struct objfile));
objfile -> md = NULL;
- obstack_full_begin (&objfile -> psymbol_obstack, 0, 0, xmalloc, free,
- (void *) 0, 0);
- obstack_full_begin (&objfile -> symbol_obstack, 0, 0, xmalloc, free,
- (void *) 0, 0);
- obstack_full_begin (&objfile -> type_obstack, 0, 0, xmalloc, free,
- (void *) 0, 0);
-
+ 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);
}
/* Update the per-objfile information that comes from the bfd, ensuring
region. */
objfile -> obfd = abfd;
+ if (objfile -> name != NULL)
+ {
+ mfree (objfile -> md, objfile -> name);
+ }
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;
return (objfile);
}
+/* Unlink OBJFILE from the list of known objfiles, if it is found in the
+ list.
+
+ It is not a bug, or error, to call this function if OBJFILE is not known
+ to be in the current list. This is done in the case of mapped objfiles,
+ for example, just to ensure that the mapped objfile doesn't appear twice
+ in the list. Since the list is threaded, linking in a mapped objfile
+ twice would create a circular list.
+
+ If OBJFILE turns out to be in the list, we zap it's NEXT pointer after
+ unlinking it, just to ensure that we have completely severed any linkages
+ between the OBJFILE and the list. */
+
+void
+unlink_objfile (objfile)
+ struct objfile *objfile;
+{
+ struct objfile** objpp;
+
+ for (objpp = &object_files; *objpp != NULL; objpp = &((*objpp) -> next))
+ {
+ if (*objpp == objfile)
+ {
+ *objpp = (*objpp) -> next;
+ objfile -> next = NULL;
+ break;
+ }
+ }
+}
+
/* Destroy an objfile and all the symtabs and psymtabs under it. Note
that as much as possible is allocated on the symbol_obstack and
objfile -> sf
- */
+ FIXME: If the objfile is using reusable symbol information (via mmalloc),
+ then we need to take into account the fact that more than one process
+ may be using the symbol information at the same time (when mmalloc is
+ extended to support cooperative locking). When more than one process
+ is using the mapped symbol info, we need to be more careful about when
+ we free objects in the reusable area. */
void
free_objfile (objfile)
struct objfile *objfile;
{
- struct objfile *ofp;
+ /* 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
+ these routines is responsible for doing the correct thing, either
+ freeing things which are valid only during this particular gdb
+ execution, or leaving them to be reused during the next one. */
if (objfile -> sf != NULL)
{
(*objfile -> sf -> sym_finish) (objfile);
}
- if (objfile -> name != NULL)
- {
- mfree (objfile -> md, objfile -> name);
- }
- if (objfile -> obfd != NULL)
- {
- bfd_close (objfile -> obfd);
- }
- /* Remove it from the chain of all objfiles. */
+ /* We always close the bfd. */
- if (object_files == objfile)
- {
- object_files = objfile -> next;
- }
- else
+ if (objfile -> obfd != NULL)
{
- for (ofp = object_files; ofp; ofp = ofp -> next)
- {
- if (ofp -> next == objfile)
- {
- ofp -> next = objfile -> next;
- }
- }
+ char *name = bfd_get_filename (objfile->obfd);
+ bfd_close (objfile -> obfd);
+ free (name);
}
- obstack_free (&objfile -> psymbol_obstack, 0);
- obstack_free (&objfile -> symbol_obstack, 0);
- obstack_free (&objfile -> type_obstack, 0);
+ /* Remove it from the chain of all objfiles. */
-#if 0 /* FIXME!! */
+ unlink_objfile (objfile);
/* Before the symbol table code was redone to make it easier to
selectively load and remove information particular to a specific
is unknown, but we play it safe for now and keep each action until
it is shown to be no longer needed. */
- clear_symtab_users_once ();
#if defined (CLEAR_SOLIB)
CLEAR_SOLIB ();
+ /* CLEAR_SOLIB closes the bfd's for any shared libraries. But
+ the to_sections for a core file might refer to those bfd's. So
+ detach any core file. */
+ {
+ struct target_ops *t = find_core_target ();
+ if (t != NULL)
+ (t->to_detach) (NULL, 0);
+ }
#endif
+ /* I *think* all our callers call clear_symtab_users. If so, no need
+ to call this here. */
clear_pc_function_cache ();
-#endif
+ /* 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. */
- /* The last thing we do is free the objfile struct itself */
+#if !defined(NO_MMALLOC) && defined(HAVE_MMAP)
- mfree (objfile -> md, objfile);
+ if (objfile -> flags & OBJF_MAPPED)
+ {
+ /* 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(NO_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 */
+ obstack_free (&objfile -> psymbol_obstack, 0);
+ obstack_free (&objfile -> symbol_obstack, 0);
+ obstack_free (&objfile -> type_obstack, 0);
+ mfree (objfile -> md, objfile);
+ objfile = NULL;
+ }
}
-/* Free all the object files at once. */
+/* Free all the object files at once and clean up their users. */
void
free_all_objfiles ()
{
free_objfile (objfile);
}
+ clear_symtab_users ();
}
-
+\f
+/* 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;
+{
+ struct section_offsets *delta = (struct section_offsets *) alloca
+ (sizeof (struct section_offsets)
+ + objfile->num_sections * sizeof (delta->offsets));
+
+ {
+ int i;
+ int something_changed = 0;
+ for (i = 0; i < objfile->num_sections; ++i)
+ {
+ ANOFFSET (delta, i) =
+ ANOFFSET (new_offsets, i) - ANOFFSET (objfile->section_offsets, i);
+ if (ANOFFSET (delta, i) != 0)
+ something_changed = 1;
+ }
+ if (!something_changed)
+ return;
+ }
+
+ /* OK, get all the symtabs. */
+ {
+ struct symtab *s;
+
+ for (s = objfile->symtabs; s; s = s->next)
+ {
+ struct linetable *l;
+ struct blockvector *bv;
+ int i;
+
+ /* First the line table. */
+ l = LINETABLE (s);
+ if (l)
+ {
+ for (i = 0; i < l->nitems; ++i)
+ l->item[i].pc += ANOFFSET (delta, s->block_line_section);
+ }
+
+ /* Don't relocate a shared blockvector more than once. */
+ if (!s->primary)
+ continue;
+
+ bv = BLOCKVECTOR (s);
+ for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); ++i)
+ {
+ struct block *b;
+ int j;
+
+ 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)
+ {
+ struct symbol *sym = BLOCK_SYM (b, j);
+ /* The RS6000 code from which this was taken skipped
+ any symbols in STRUCT_NAMESPACE or UNDEF_NAMESPACE.
+ 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
+ || SYMBOL_CLASS (sym) == LOC_STATIC)
+ && SYMBOL_SECTION (sym) >= 0)
+ {
+ SYMBOL_VALUE_ADDRESS (sym) +=
+ ANOFFSET (delta, SYMBOL_SECTION (sym));
+ }
+ }
+ }
+ }
+ }
+
+ {
+ struct partial_symtab *p;
+
+ ALL_OBJFILE_PSYMTABS (objfile, p)
+ {
+ /* FIXME: specific to symbol readers which use gdb-stabs.h.
+ We can only get away with it since objfile_relocate is only
+ used on XCOFF, which lacks psymtabs, and for gdb-stabs.h
+ targets. */
+ p->textlow += ANOFFSET (delta, SECT_OFF_TEXT);
+ p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT);
+ }
+ }
+
+ {
+ struct partial_symbol *psym;
+
+ 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));
+ 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));
+ }
+
+ {
+ struct minimal_symbol *msym;
+ ALL_OBJFILE_MSYMBOLS (objfile, msym)
+ if (SYMBOL_SECTION (msym) >= 0)
+ SYMBOL_VALUE_ADDRESS (msym) += ANOFFSET (delta, SYMBOL_SECTION (msym));
+ }
+
+ {
+ int i;
+ for (i = 0; i < objfile->num_sections; ++i)
+ ANOFFSET (objfile->section_offsets, i) = ANOFFSET (new_offsets, i);
+ }
+}
+\f
/* Many places in gdb want to test just to see if we have any partial
symbols available. This function returns zero if none are currently
available, nonzero otherwise. */
return 0;
}
+#if !defined(NO_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, mapped)
+ char *symsfilename;
+ long mtime;
+ int mapped;
+{
+ int fd = -1;
+ struct stat sbuf;
+
+ if (stat (symsfilename, &sbuf) == 0)
+ {
+ if (sbuf.st_mtime < mtime)
+ {
+ if (!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 (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
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. */
+ 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, mapped)
int mapped;
{
int fd;
- char *symfilename;
- struct stat sbuf;
+ char *symsfilename;
- /* For now, all we do is look in the local directory for a file with
- the name of the base file and an extension of ".syms" */
+ /* First try to open an existing file in the current directory, and
+ then try the directory where the symbol file is located. */
- symfilename = concat ("./", basename (filename), ".syms", (char *) NULL);
-
- /* Check to see if the desired file already exists and is more recent than
- the corresponding base file (specified by the passed MTIME parameter).
- The open will fail if the file does not already exist. */
-
- if ((fd = open (symfilename, O_RDWR)) >= 0)
+ symsfilename = concat ("./", basename (filename), ".syms", (char *) NULL);
+ if ((fd = open_existing_mapped_file (symsfilename, mtime, mapped)) < 0)
{
- if (fstat (fd, &sbuf) != 0)
- {
- close (fd);
- perror_with_name (symfilename);
- }
- else if (sbuf.st_mtime > mtime)
- {
- return (fd);
- }
- else
- {
- close (fd);
- fd = -1;
- }
+ free (symsfilename);
+ symsfilename = concat (filename, ".syms", (char *) NULL);
+ fd = open_existing_mapped_file (symsfilename, mtime, mapped);
}
- /* 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.
-
- In the case where there is an existing file, but it is out of date, and
- the user did not specify mapped, the existing file is just silently
- ignored. Perhaps we should warn about this case (FIXME?).
+ /* 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 (mapped)
+ if ((fd < 0) && mapped)
{
- fd = open (symfilename, O_RDWR | O_CREAT | O_TRUNC, 0666);
+ 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 (error_pre_print);
+ }
+ print_sys_errmsg (symsfilename, errno);
+ }
}
+ free (symsfilename);
return (fd);
}
#endif
}
+
+#endif /* !defined(NO_MMALLOC) && defined(HAVE_MMAP) */
+
+/* Returns a section whose range includes PC or NULL if none found. */
+
+struct obj_section *
+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);
+
+ return(NULL);
+}
projects / deliverable / binutils-gdb.git / blobdiff