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authorStan Shebs <shebs@codesourcery.com>1994-10-13 01:16:19 +0000
committerStan Shebs <shebs@codesourcery.com>1994-10-13 01:16:19 +0000
commit806f810b6981720941243c3a62be2e83c7112322 (patch)
tree69e5d97d59ed9f95925b75330a7486620c7b2aab /gdb/exec.c
parentba49e48d26b99bc88634a7c5ceba55179974fdc8 (diff)
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* exec.c: Merge in RS6000 support from xcoffexec.c.
(symfile.h, objfiles.h, xcoffsolib.h): Include. (vmap): New global variable. (exec_close): Close and free objects in vmap chain. (exec_file_command) [IBM6000_TARGET]: Set up initial vmap. (bfdsec_to_vmap, map_vmap): Moved here from xcoffexec.c. (exec_files_info): Print vmap information. * xcoffexec.c: Remove. * config/rs6000/rs6000.mt, config/rs6000/rs6000lynx.mt (TDEPFILES): Use exec.o instead of xcoffexec.o. * TODO: Remove pertinent items.
Diffstat (limited to 'gdb/exec.c')
-rw-r--r--gdb/exec.c205
1 files changed, 168 insertions, 37 deletions
diff --git a/gdb/exec.c b/gdb/exec.c
index 4450771..b0565bc 100644
--- a/gdb/exec.c
+++ b/gdb/exec.c
@@ -23,6 +23,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "target.h"
#include "gdbcmd.h"
#include "language.h"
+#include "symfile.h"
+#include "objfiles.h"
#ifdef USG
#include <sys/types.h>
@@ -40,22 +42,21 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#define O_BINARY 0
#endif
+#include "xcoffsolib.h"
+
+struct vmap *map_vmap PARAMS ((bfd *, bfd *));
+
/* Prototypes for local functions */
-static void
-add_to_section_table PARAMS ((bfd *, sec_ptr, PTR));
+static void add_to_section_table PARAMS ((bfd *, sec_ptr, PTR));
-static void
-exec_close PARAMS ((int));
+static void exec_close PARAMS ((int));
-static void
-file_command PARAMS ((char *, int));
+static void file_command PARAMS ((char *, int));
-static void
-set_section_command PARAMS ((char *, int));
+static void set_section_command PARAMS ((char *, int));
-static void
-exec_files_info PARAMS ((struct target_ops *));
+static void exec_files_info PARAMS ((struct target_ops *));
extern int info_verbose;
@@ -74,6 +75,8 @@ CORE_ADDR text_start = 0;
CORE_ADDR text_end = 0;
#endif
+struct vmap *vmap;
+
/* Forward decl */
extern struct target_ops exec_ops;
@@ -83,17 +86,49 @@ static void
exec_close (quitting)
int quitting;
{
- if (exec_bfd) {
- char *name = bfd_get_filename (exec_bfd);
- bfd_close (exec_bfd);
- free (name);
- exec_bfd = NULL;
- }
- if (exec_ops.to_sections) {
- free ((PTR)exec_ops.to_sections);
- exec_ops.to_sections = NULL;
- exec_ops.to_sections_end = NULL;
- }
+ int need_symtab_cleanup = 0;
+ struct vmap *vp, *nxt;
+
+ for (nxt = vmap; nxt != NULL; )
+ {
+ vp = nxt;
+ nxt = vp->nxt;
+
+ /* if there is an objfile associated with this bfd,
+ free_objfile() will do proper cleanup of objfile *and* bfd. */
+
+ if (vp->objfile)
+ {
+ free_objfile (vp->objfile);
+ need_symtab_cleanup = 1;
+ }
+ else if (vp->bfd != exec_bfd)
+ bfd_close (vp->bfd);
+
+ /* FIXME: This routine is #if 0'd in symfile.c. What should we
+ be doing here? Should we just free everything in
+ vp->objfile->symtabs? Should free_objfile do that? */
+ free_named_symtabs (vp->name);
+ free (vp);
+ }
+
+ vmap = NULL;
+
+ if (exec_bfd)
+ {
+ char *name = bfd_get_filename (exec_bfd);
+
+ bfd_close (exec_bfd);
+ free (name);
+ exec_bfd = NULL;
+ }
+
+ if (exec_ops.to_sections)
+ {
+ free ((PTR)exec_ops.to_sections);
+ exec_ops.to_sections = NULL;
+ exec_ops.to_sections_end = NULL;
+ }
}
/* Process the first arg in ARGS as the new exec file.
@@ -123,19 +158,17 @@ exec_file_command (args, from_tty)
int scratch_chan;
/* Scan through the args and pick up the first non option arg
- as the filename. */
+ as the filename. */
+
+ argv = buildargv (args);
+ if (argv == NULL)
+ nomem (0);
- if ((argv = buildargv (args)) == NULL)
- {
- nomem (0);
- }
make_cleanup (freeargv, (char *) argv);
for (; (*argv != NULL) && (**argv == '-'); argv++) {;}
if (*argv == NULL)
- {
- error ("no exec file name was specified");
- }
+ error ("no exec file name was specified");
filename = tilde_expand (*argv);
make_cleanup (free, filename);
@@ -148,25 +181,41 @@ exec_file_command (args, from_tty)
exec_bfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan);
if (!exec_bfd)
- error ("Could not open `%s' as an executable file: %s",
+ error ("\"%s\": could not open as an executable file: %s",
scratch_pathname, bfd_errmsg (bfd_get_error ()));
if (!bfd_check_format (exec_bfd, bfd_object))
{
/* Make sure to close exec_bfd, or else "run" might try to use
it. */
exec_close (0);
- error ("\"%s\": not in executable format: %s.",
+ error ("\"%s\": not in executable format: %s",
scratch_pathname, bfd_errmsg (bfd_get_error ()));
}
+ /* FIXME - This should only be run for RS6000, but the ifdef is a poor
+ way to accomplish. */
+#ifdef IBM6000_TARGET
+ /* Setup initial vmap. */
+
+ map_vmap (exec_bfd, 0);
+ if (vmap == NULL)
+ {
+ /* Make sure to close exec_bfd, or else "run" might try to use
+ it. */
+ exec_close (0);
+ error ("\"%s\": can't find the file sections: %s",
+ scratch_pathname, bfd_errmsg (bfd_get_error ()));
+ }
+#endif /* IBM6000_TARGET */
+
if (build_section_table (exec_bfd, &exec_ops.to_sections,
&exec_ops.to_sections_end))
{
/* Make sure to close exec_bfd, or else "run" might try to use
it. */
exec_close (0);
- error ("Can't find the file sections in `%s': %s",
- exec_bfd->filename, bfd_errmsg (bfd_get_error ()));
+ error ("\"%s\": can't find the file sections: %s",
+ scratch_pathname, bfd_errmsg (bfd_get_error ()));
}
#ifdef NEED_TEXT_START_END
@@ -272,6 +321,70 @@ build_section_table (some_bfd, start, end)
return 0;
}
+static void
+bfdsec_to_vmap(abfd, sect, arg3)
+ bfd *abfd;
+ sec_ptr sect;
+ PTR arg3;
+{
+ struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3;
+ struct vmap *vp;
+
+ vp = vmap_bfd->pvmap;
+
+ if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0)
+ return;
+
+ if (STREQ (bfd_section_name (abfd, sect), ".text"))
+ {
+ vp->tstart = 0;
+ vp->tend = vp->tstart + bfd_section_size (abfd, sect);
+
+ /* When it comes to this adjustment value, in contrast to our previous
+ belief shared objects should behave the same as the main load segment.
+ This is the offset from the beginning of text section to the first
+ real instruction. */
+
+ vp->tadj = sect->filepos - bfd_section_vma (abfd, sect);
+ }
+ else if (STREQ (bfd_section_name (abfd, sect), ".data"))
+ {
+ vp->dstart = 0;
+ vp->dend = vp->dstart + bfd_section_size (abfd, sect);
+ }
+ /* Silently ignore other types of sections. (FIXME?) */
+}
+
+/* Make a vmap for ABFD which might be a member of the archive ARCH.
+ Return the new vmap. */
+
+struct vmap *
+map_vmap (abfd, arch)
+ bfd *abfd;
+ bfd *arch;
+{
+ struct vmap_and_bfd vmap_bfd;
+ struct vmap *vp, **vpp;
+
+ vp = (PTR) xmalloc (sizeof (*vp));
+ memset ((char *) vp, '\0', sizeof (*vp));
+ vp->nxt = 0;
+ vp->bfd = abfd;
+ vp->name = bfd_get_filename (arch ? arch : abfd);
+ vp->member = arch ? bfd_get_filename (abfd) : "";
+
+ vmap_bfd.pbfd = arch;
+ vmap_bfd.pvmap = vp;
+ bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd);
+
+ /* Find the end of the list and append. */
+ for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt)
+ ;
+ *vpp = vp;
+
+ return vp;
+}
+
/* Read or write the exec file.
Args are address within a BFD file, address within gdb address-space,
@@ -307,7 +420,7 @@ xfer_memory (memaddr, myaddr, len, write, target)
abort();
memend = memaddr + len;
- xfer_fn = write? bfd_set_section_contents: bfd_get_section_contents;
+ xfer_fn = write ? bfd_set_section_contents : bfd_get_section_contents;
nextsectaddr = memend;
for (p = target->to_sections; p < target->to_sections_end; p++)
@@ -316,7 +429,8 @@ xfer_memory (memaddr, myaddr, len, write, target)
if (p->endaddr >= memend)
{
/* Entire transfer is within this section. */
- res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, memaddr - p->addr, len);
+ res = xfer_fn (p->bfd, p->the_bfd_section, myaddr,
+ memaddr - p->addr, len);
return (res != 0) ? len : 0;
}
else if (p->endaddr <= memaddr)
@@ -328,7 +442,8 @@ xfer_memory (memaddr, myaddr, len, write, target)
{
/* This section overlaps the transfer. Just do half. */
len = p->endaddr - memaddr;
- res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, memaddr - p->addr, len);
+ res = xfer_fn (p->bfd, p->the_bfd_section, myaddr,
+ memaddr - p->addr, len);
return (res != 0) ? len : 0;
}
else if (p->addr < nextsectaddr)
@@ -391,9 +506,25 @@ print_section_info (t, abfd)
static void
exec_files_info (t)
- struct target_ops *t;
+ struct target_ops *t;
{
print_section_info (t, exec_bfd);
+
+ if (vmap)
+ {
+ struct vmap *vp;
+
+ printf_unfiltered ("\tMapping info for file `%s'.\n", vmap->name);
+ printf_unfiltered ("\t %8.8s %8.8s %8.8s %8.8s %8.8s %s\n",
+ "tstart", "tend", "dstart", "dend", "section",
+ "file(member)");
+
+ for (vp = vmap; vp; vp = vp->nxt)
+ printf_unfiltered ("\t0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x %s%s%s%s\n",
+ vp->tstart, vp->tend, vp->dstart, vp->dend, vp->name,
+ *vp->member ? "(" : "", vp->member,
+ *vp->member ? ")" : "");
+ }
}
static void