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Changes to implement the -mapped and -readnow options for commands that

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read symbol tables.
This commit is contained in:
Fred Fish
1992-03-18 16:43:25 +00:00
parent afbdd10672
commit b0246b3bec
11 changed files with 572 additions and 614 deletions
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40
gdb/objfiles.c
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@@ -34,7 +34,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Prototypes for local functions */
static int
open_mapped_file PARAMS ((char *basefile, long mtime, int mapped));
open_mapped_file PARAMS ((char *filename, long mtime, int mapped));
static CORE_ADDR
map_to_address PARAMS ((void));
@@ -44,13 +44,14 @@ map_to_address PARAMS ((void));
struct objfile *object_files; /* Linked list of all objfiles */
int mapped_symbol_files; /* Try to use mapped symbol files */
/* Allocate a new objfile struct, fill it in as best we can, and return it.
It is also linked into the list of all known object files. */
/* 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
objfiles, and return a pointer to the new objfile struct. */
struct objfile *
allocate_objfile (abfd, filename, mapped)
allocate_objfile (abfd, mapped)
bfd *abfd;
char *filename;
int mapped;
{
struct objfile *objfile = NULL;
@@ -71,10 +72,11 @@ allocate_objfile (abfd, filename, mapped)
pointers to the alloc/free functions in the obstack, in case these
functions have moved within the current gdb. */
fd = open_mapped_file (filename, bfd_get_mtime (abfd), mapped);
fd = open_mapped_file (bfd_get_filename (abfd), bfd_get_mtime (abfd),
mapped);
if (fd >= 0)
{
if (((mapto = map_to_address ()) == NULL) ||
if (((mapto = map_to_address ()) == 0) ||
((md = mmalloc_attach (fd, (void *) mapto)) == NULL))
{
close (fd);
@@ -115,7 +117,8 @@ allocate_objfile (abfd, filename, mapped)
if (mapped && (objfile == NULL))
{
warning ("symbol table for '%s' will not be mapped", filename);
warning ("symbol table for '%s' will not be mapped",
bfd_get_filename (abfd));
}
#else /* defined(NO_MMALLOC) || !defined(HAVE_MMAP) */
@@ -151,13 +154,12 @@ allocate_objfile (abfd, filename, mapped)
}
/* Now, malloc a fresh copy of the filename string. */
objfile -> name = xmmalloc (objfile -> md, strlen (filename) + 1);
strcpy (objfile -> name, filename);
/* 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. */
objfile -> obfd = abfd;
objfile -> name = mstrsave (objfile -> md, bfd_get_filename (abfd));
objfile -> mtime = bfd_get_mtime (abfd);
/* Push this file onto the head of the linked list of other such files. */
@@ -408,10 +410,10 @@ iterate_over_psymtabs (func, arg1, arg2, arg3)
}
/* Look for a mapped symbol file that corresponds to BASEFILE and is more
/* 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 base file, so create a new one if
one does not currently exist.
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.
@@ -421,8 +423,8 @@ iterate_over_psymtabs (func, arg1, arg2, arg3)
symbols that gdb would like to read. */
static int
open_mapped_file (basefile, mtime, mapped)
char *basefile;
open_mapped_file (filename, mtime, mapped)
char *filename;
long mtime;
int mapped;
{
@@ -433,7 +435,7 @@ open_mapped_file (basefile, mtime, mapped)
/* 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" */
symfilename = concat ("./", basename (basefile), ".syms", (char *) NULL);
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).