-/* Execute AIXcoff files, for GDB.
- Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
- Derived from exec.c. Modified by IBM Corporation.
- Donated by IBM Corporation and Cygnus Support.
-
-This file is part of GDB.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-/* xcoff-exec - deal with executing XCOFF files. */
-
-#include "defs.h"
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <fcntl.h>
-#include <string.h>
-#include <ctype.h>
-#include <sys/stat.h>
-#include <sys/ldr.h>
-
-#include "frame.h"
-#include "inferior.h"
-#include "target.h"
-#include "gdbcmd.h"
-#include "gdbcore.h"
-#include "symfile.h"
-#include "objfiles.h"
-
-#include "libbfd.h" /* BFD internals (sigh!) FIXME */
-#include "bfd.h"
-#include "xcoffsolib.h"
-
-/* Prototypes for local functions */
-
-static void
-file_command PARAMS ((char *, int));
-
-static void
-exec_close PARAMS ((int));
-
-static struct vmap *
-map_vmap PARAMS ((bfd *, bfd *));
-
-struct section_table *exec_sections, *exec_sections_end;
-
-/* Whether to open exec and core files read-only or read-write. */
-
-int write_files = 0;
-
-extern int info_verbose;
-
-bfd *exec_bfd; /* needed by core.c */
-
-extern char *getenv();
-extern void add_syms_addr_command ();
-extern void symbol_file_command ();
-static void exec_files_info();
-
-struct vmap *vmap; /* current vmap */
-
-extern struct target_ops exec_ops;
-
-
-/* exec_close - done with exec file, clean up all resources. */
-
-static void
-exec_close(quitting)
-{
- register struct vmap *vp, *nxt;
- struct objfile *obj;
- int need_symtab_cleanup = 0;
-
- for (nxt = vmap; 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
- 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 = 0;
-
- /* exec_bfd was already closed (the exec file has a vmap entry). */
- exec_bfd = NULL;
-
- if (exec_ops.to_sections) {
- free (exec_ops.to_sections);
- exec_ops.to_sections = NULL;
- exec_ops.to_sections_end = NULL;
- }
-
- if (need_symtab_cleanup)
- clear_symtab_users ();
-}
-
-/*
- * exec_file_command - handle the "exec" command, &c.
- */
-void
-exec_file_command(filename, from_tty)
-char *filename;
-{
- target_preopen(from_tty);
-
- /* Remove any previous exec file. */
- unpush_target(&exec_ops);
-
- /* Now open and digest the file the user requested, if any. */
-
- if (filename) {
- char *scratch_pathname;
- int scratch_chan;
-
- filename = tilde_expand(filename);
- make_cleanup (free, filename);
-
- scratch_chan = openp(getenv("PATH"), 1, filename,
- write_files? O_RDWR: O_RDONLY, 0,
- &scratch_pathname);
- if (scratch_chan < 0)
- perror_with_name(filename);
-
- exec_bfd = bfd_fdopenr(scratch_pathname, gnutarget, scratch_chan);
- if (!exec_bfd)
- error("Could not open `%s' as an executable file: %s"
- , scratch_pathname, bfd_errmsg(bfd_error));
-
- /* make sure we have an object file */
-
- if (!bfd_check_format(exec_bfd, bfd_object))
- error("\"%s\": not in executable format: %s.",
- scratch_pathname, bfd_errmsg(bfd_error));
-
-
- /* setup initial vmap */
-
- map_vmap (exec_bfd, 0);
- if (!vmap)
- error("Can't find the file sections in `%s': %s",
- exec_bfd->filename, bfd_errmsg(bfd_error));
-
- if (build_section_table (exec_bfd, &exec_ops.to_sections,
- &exec_ops.to_sections_end))
- error ("Can't find the file sections in `%s': %s",
- exec_bfd->filename, bfd_errmsg (bfd_error));
-
- /* make sure core, if present, matches */
- validate_files();
-
- push_target(&exec_ops);
-
- /* Tell display code(if any) about the changed file name. */
-
- if (exec_file_display_hook)
- (*exec_file_display_hook)(filename);
- }
- else {
- exec_close(0); /* just in case */
- if (from_tty)
- printf_unfiltered("No exec file now.\n");
- }
-}
-
-/* Set both the exec file and the symbol file, in one command. What a
- * novelty. Why did GDB go through four major releases before this
- * command was added?
- */
-static void
-file_command(arg, from_tty)
-char *arg; {
-
- exec_file_command(arg, from_tty);
- symbol_file_command(arg, from_tty);
-}
-
-/* Locate all mappable sections of a BFD file.
- table_pp_char is a char * to get it through bfd_map_over_sections;
- we cast it back to its proper type. */
-
-static void
-add_to_section_table (abfd, asect, table_pp_char)
- bfd *abfd;
- sec_ptr asect;
- char *table_pp_char;
-{
- struct section_table **table_pp = (struct section_table **)table_pp_char;
- 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;
- (*table_pp)->bfd = abfd;
- (*table_pp)->sec_ptr = asect;
- (*table_pp)->addr = bfd_section_vma (abfd, asect);
- (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect);
- (*table_pp)++;
-}
-
-int
-build_section_table (some_bfd, start, end)
- bfd *some_bfd;
- struct section_table **start, **end;
-{
- unsigned count;
-
- count = bfd_count_sections (some_bfd);
- if (count == 0)
- fatal ("aborting"); /* return 1? */
- if (*start)
- free (*start);
- *start = (struct section_table *) xmalloc (count * sizeof (**start));
- *end = *start;
- bfd_map_over_sections (some_bfd, add_to_section_table, (char *)end);
- if (*end > *start + count)
- fatal ("aborting");
- /* We could realloc the table, but it probably loses for most files. */
- return 0;
-}
-\f
-void
-sex_to_vmap(bfd *bf, sec_ptr sex, PTR arg3)
-{
- struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *)arg3;
- register struct vmap *vp, **vpp;
- register struct symtab *syms;
- bfd *arch = vmap_bfd->pbfd;
- vp = vmap_bfd->pvmap;
-
- if ((bfd_get_section_flags(bf, sex) & SEC_LOAD) == 0)
- return;
-
- if (STREQ(bfd_section_name(bf, sex), ".text")) {
- vp->tstart = 0;
- vp->tend = vp->tstart + bfd_section_size(bf, sex);
-
- /* 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 = sex->filepos - bfd_section_vma(bf, sex);
- }
-
- else if (STREQ(bfd_section_name(bf, sex), ".data")) {
- vp->dstart = 0;
- vp->dend = vp->dstart + bfd_section_size(bf, sex);
- }
-
- else if (STREQ(bfd_section_name(bf, sex), ".bss")) /* FIXMEmgo */
- printf_unfiltered ("bss section in exec! Don't know what the heck to do!\n");
-}
-
-/* Make a vmap for the BFD "bf", which might be a member of the archive
- BFD "arch". Return the new vmap. */
-struct vmap *
-map_vmap (bfd *bf, bfd *arch)
-{
- struct vmap_and_bfd vmap_bfd;
- struct vmap *vp, **vpp;
- struct objfile *obj;
-
- vp = (void*) xmalloc (sizeof (*vp));
- memset (vp, '\0', sizeof (*vp));
- vp->nxt = 0;
- vp->bfd = bf;
- vp->name = bfd_get_filename(arch ? arch : bf);
- vp->member = arch ? bfd_get_filename(bf) : "";
-
- vmap_bfd.pbfd = arch;
- vmap_bfd.pvmap = vp;
- bfd_map_over_sections (bf, sex_to_vmap, &vmap_bfd);
-
- /* find the end of the list, and append. */
- for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt)
- ;
- *vpp = vp;
-
- return vp;
-}
-
-
-/* vmap_symtab - handle symbol translation on vmapping */
-
-static void
-vmap_symtab (vp)
- register struct vmap *vp;
-{
- register struct objfile *objfile;
- asection *textsec;
- asection *datasec;
- asection *bsssec;
- CORE_ADDR text_delta;
- CORE_ADDR data_delta;
- CORE_ADDR bss_delta;
- struct section_offsets *new_offsets;
- int i;
-
- objfile = vp->objfile;
- if (objfile == NULL)
- {
- /* OK, it's not an objfile we opened ourselves.
- Currently, that can only happen with the exec file, so
- relocate the symbols for the symfile. */
- if (symfile_objfile == NULL)
- return;
- objfile = symfile_objfile;
- }
-
- new_offsets = alloca
- (sizeof (struct section_offsets)
- + sizeof (new_offsets->offsets) * objfile->num_sections);
-
- for (i = 0; i < objfile->num_sections; ++i)
- ANOFFSET (new_offsets, i) = ANOFFSET (objfile->section_offsets, i);
-
- textsec = bfd_get_section_by_name (vp->bfd, ".text");
- text_delta =
- vp->tstart - ANOFFSET (objfile->section_offsets, textsec->target_index);
- ANOFFSET (new_offsets, textsec->target_index) = vp->tstart;
-
- datasec = bfd_get_section_by_name (vp->bfd, ".data");
- data_delta =
- vp->dstart - ANOFFSET (objfile->section_offsets, datasec->target_index);
- ANOFFSET (new_offsets, datasec->target_index) = vp->dstart;
-
- bsssec = bfd_get_section_by_name (vp->bfd, ".bss");
- bss_delta =
- vp->dstart - ANOFFSET (objfile->section_offsets, bsssec->target_index);
- ANOFFSET (new_offsets, bsssec->target_index) = vp->dstart;
-
- objfile_relocate (objfile, new_offsets);
-
- {
- struct obj_section *s;
- for (s = objfile->sections; s < objfile->sections_end; ++s)
- {
- if (s->sec_ptr->target_index == textsec->target_index)
- {
- s->addr += text_delta;
- s->endaddr += text_delta;
- }
- else if (s->sec_ptr->target_index == datasec->target_index)
- {
- s->addr += data_delta;
- s->endaddr += data_delta;
- }
- else if (s->sec_ptr->target_index == bsssec->target_index)
- {
- s->addr += bss_delta;
- s->endaddr += bss_delta;
- }
- }
- }
-
- if (text_delta != 0)
- /* breakpoints need to be relocated as well. */
- fixup_breakpoints (0, TEXT_SEGMENT_BASE, text_delta);
-}
-
-/* Add symbols for an objfile. */
-static int
-objfile_symbol_add (arg)
- char *arg;
-{
- struct objfile *obj = (struct objfile *) arg;
- syms_from_objfile (obj, 0, 0, 0);
- new_symfile_objfile (obj, 0, 0);
- return 1;
-}
-
-static struct vmap *add_vmap PARAMS ((struct ld_info *));
-
-/* Add a new vmap entry based on ldinfo() information.
-
- If ldi->ldinfo_fd is not valid (e.g. this struct ld_info is from a
- core file), the caller should set it to -1, and we will open the file.
-
- Return the vmap new entry. */
-static struct vmap *
-add_vmap(ldi)
- register struct ld_info *ldi;
-{
- bfd *abfd, *last;
- register char *mem, *objname;
- struct objfile *obj;
- struct vmap *vp;
-
- /* This ldi structure was allocated using alloca() in
- xcoff_relocate_symtab(). Now we need to have persistent object
- and member names, so we should save them. */
-
- mem = ldi->ldinfo_filename + strlen(ldi->ldinfo_filename) + 1;
- mem = savestring (mem, strlen (mem));
- objname = savestring (ldi->ldinfo_filename, strlen (ldi->ldinfo_filename));
-
- if (ldi->ldinfo_fd < 0)
- /* Note that this opens it once for every member; a possible
- enhancement would be to only open it once for every object. */
- abfd = bfd_openr (objname, gnutarget);
- else
- abfd = bfd_fdopenr(objname, gnutarget, ldi->ldinfo_fd);
- if (!abfd)
- error("Could not open `%s' as an executable file: %s",
- objname, bfd_errmsg(bfd_error));
-
-
- /* make sure we have an object file */
-
- if (bfd_check_format(abfd, bfd_object))
- vp = map_vmap (abfd, 0);
-
- else if (bfd_check_format(abfd, bfd_archive)) {
- last = 0;
- /*
- * FIXME??? am I tossing BFDs? bfd?
- */
- while (last = bfd_openr_next_archived_file(abfd, last))
- if (STREQ(mem, last->filename))
- break;
-
- if (!last) {
- bfd_close(abfd);
- /* FIXME -- should be error */
- warning("\"%s\": member \"%s\" missing.", abfd->filename, mem);
- return;
- }
-
- if (!bfd_check_format(last, bfd_object)) {
- bfd_close(last); /* XXX??? */
- goto obj_err;
- }
-
- vp = map_vmap (last, abfd);
- }
- else {
- obj_err:
- bfd_close(abfd);
- error ("\"%s\": not in executable format: %s.",
- objname, bfd_errmsg(bfd_error));
- /*NOTREACHED*/
- }
- obj = allocate_objfile (vp->bfd, 0);
- vp->objfile = obj;
-
-#ifndef SOLIB_SYMBOLS_MANUAL
- if (catch_errors (objfile_symbol_add, (char *)obj,
- "Error while reading shared library symbols:\n",
- RETURN_MASK_ALL))
- {
- /* Note this is only done if symbol reading was successful. */
- vmap_symtab (vp);
- vp->loaded = 1;
- }
-#endif
- return vp;
-}
-
-
-/* As well as symbol tables, exec_sections need relocation. After
- the inferior process' termination, there will be a relocated symbol
- table exist with no corresponding inferior process. At that time, we
- need to use `exec' bfd, rather than the inferior process's memory space
- to look up symbols.
-
- `exec_sections' need to be relocated only once, as long as the exec
- file remains unchanged.
-*/
-vmap_exec ()
-{
- static bfd *execbfd;
- int i;
-
- if (execbfd == exec_bfd)
- return;
-
- execbfd = exec_bfd;
-
- if (!vmap || !exec_ops.to_sections)
- error ("vmap_exec: vmap or exec_ops.to_sections == 0\n");
-
- for (i=0; &exec_ops.to_sections[i] < exec_ops.to_sections_end; i++)
- {
- if (STREQ(".text", exec_ops.to_sections[i].sec_ptr->name))
- {
- exec_ops.to_sections[i].addr += vmap->tstart;
- exec_ops.to_sections[i].endaddr += vmap->tstart;
- }
- else if (STREQ(".data", exec_ops.to_sections[i].sec_ptr->name))
- {
- exec_ops.to_sections[i].addr += vmap->dstart;
- exec_ops.to_sections[i].endaddr += vmap->dstart;
- }
- }
-}
-
-#if 0
-/* This was for the old, half-assed, core file support. */
-int
-text_adjustment (abfd)
-bfd *abfd;
-{
- static bfd *execbfd;
- static int adjustment;
- sec_ptr sect;
-
- if (exec_bfd == execbfd)
- return adjustment;
-
- sect = bfd_get_section_by_name (abfd, ".text");
- if (sect)
- adjustment = sect->filepos - sect->vma;
- else
- adjustment = 0x200; /* just a wild assumption */
-
- return adjustment;
-}
-#endif
-
-/*
- * vmap_ldinfo - update VMAP info with ldinfo() information
- *
- * Input:
- * ldi - ^ to ldinfo() results.
- */
-vmap_ldinfo(ldi)
-register struct ld_info *ldi;
-{
- struct stat ii, vi;
- register struct vmap *vp;
- register got_one, retried;
- CORE_ADDR ostart;
-
- /*
- * for each *ldi, see if we have a corresponding *vp
- * if so, update the mapping, and symbol table.
- * if not, add an entry and symbol table.
- */
- do {
- char *name = ldi->ldinfo_filename;
- char *memb = name + strlen(name) + 1;
-
- retried = 0;
-
- if (fstat(ldi->ldinfo_fd, &ii) < 0)
- fatal("cannot fstat(%d) on %s"
- , ldi->ldinfo_fd
- , name);
-retry:
- for (got_one = 0, vp = vmap; vp; vp = vp->nxt) {
- FILE *io;
-
- /* First try to find a `vp', which is the same as in ldinfo.
- If not the same, just continue and grep the next `vp'. If same,
- relocate its tstart, tend, dstart, dend values. If no such `vp'
- found, get out of this for loop, add this ldi entry as a new vmap
- (add_vmap) and come back, fins its `vp' and so on... */
-
- /* The filenames are not always sufficient to match on. */
-
- if ((name[0] == '/' && !STREQ(name, vp->name))
- || (memb[0] && !STREQ(memb, vp->member)))
- continue;
-
- io = bfd_cache_lookup(vp->bfd); /* totally opaque! */
- if (!io)
- fatal("cannot find BFD's iostream for %s", vp->name);
-
- /* see if we are referring to the same file */
-
- if (fstat(fileno(io), &vi) < 0)
- fatal("cannot fstat BFD for %s", vp->name);
-
- if (ii.st_dev != vi.st_dev || ii.st_ino != vi.st_ino)
- continue;
-
- if (!retried)
- close(ldi->ldinfo_fd);
-
- ++got_one;
-
- /* found a corresponding VMAP. remap! */
- ostart = vp->tstart;
-
- /* We can assume pointer == CORE_ADDR, this code is native only. */
- vp->tstart = (CORE_ADDR) ldi->ldinfo_textorg;
- vp->tend = vp->tstart + ldi->ldinfo_textsize;
- vp->dstart = (CORE_ADDR) ldi->ldinfo_dataorg;
- vp->dend = vp->dstart + ldi->ldinfo_datasize;
-
- if (vp->tadj) {
- vp->tstart += vp->tadj;
- vp->tend += vp->tadj;
- }
-
- /* relocate symbol table(s). */
- vmap_symtab (vp);
-
- /* there may be more, so we don't break out of the loop. */
- }
-
- /* if there was no matching *vp, we must perforce create the sucker(s) */
- if (!got_one && !retried) {
- add_vmap(ldi);
- ++retried;
- goto retry;
- }
- } while (ldi->ldinfo_next
- && (ldi = (void *) (ldi->ldinfo_next + (char *) ldi)));
-
-}
-
-/*
- * vmap_inferior - print VMAP info for inferior
- */
-vmap_inferior() {
-
- if (inferior_pid == 0)
- return 0; /* normal processing */
-
- exec_files_info();
- return 1;
-}
-
-/* Read or write the exec file.
-
- Args are address within exec file, address within gdb address-space,
- length, and a flag indicating whether to read or write.
-
- Result is a length:
-
- 0: We cannot handle this address and length.
- > 0: We have handled N bytes starting at this address.
- (If N == length, we did it all.) We might be able
- to handle more bytes beyond this length, but no
- promises.
- < 0: We cannot handle this address, but if somebody
- else handles (-N) bytes, we can start from there.
-
- The same routine is used to handle both core and exec files;
- we just tail-call it with more arguments to select between them. */
-
-int
-xfer_memory (memaddr, myaddr, len, write, target)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int write;
- struct target_ops *target;
-{
- boolean res;
- struct section_table *p;
- CORE_ADDR nextsectaddr, memend;
- boolean (*xfer_fn) PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type));
-
- if (len <= 0)
- fatal ("aborting");
-
- memend = memaddr + len;
- xfer_fn = write? bfd_set_section_contents: bfd_get_section_contents;
- nextsectaddr = memend;
-
- for (p = target->to_sections; p < target->to_sections_end; p++)
- {
- if (p->addr <= memaddr)
- if (p->endaddr >= memend)
- {
- /* Entire transfer is within this section. */
- res = xfer_fn (p->bfd, p->sec_ptr, myaddr, memaddr - p->addr, len);
- return (res != false)? len: 0;
- }
- else if (p->endaddr <= memaddr)
- {
- /* This section ends before the transfer starts. */
- continue;
- }
- else
- {
- /* This section overlaps the transfer. Just do half. */
- len = p->endaddr - memaddr;
- res = xfer_fn (p->bfd, p->sec_ptr, myaddr, memaddr - p->addr, len);
- return (res != false)? len: 0;
- }
- else if (p->addr < nextsectaddr)
- nextsectaddr = p->addr;
- }
-
- if (nextsectaddr >= memend)
- return 0; /* We can't help */
- else
- return - (nextsectaddr - memaddr); /* Next boundary where we can help */
-}
-
-void
-print_section_info (t, abfd)
- struct target_ops *t;
- bfd *abfd;
-{
- struct section_table *p;
-
- /* FIXME-32x64: Need a version of print_address_numeric with field width. */
- printf_filtered ("\t`%s', ", bfd_get_filename(abfd));
- wrap_here (" ");
- printf_filtered ("file type %s.\n", bfd_get_target(abfd));
-
- for (p = t->to_sections; p < t->to_sections_end; p++) {
- printf_filtered ("\t%s",
- local_hex_string_custom ((unsigned long) p->addr, "08l"));
- printf_filtered (" - %s",
- local_hex_string_custom ((unsigned long) p->endaddr, "08l"));
- if (info_verbose)
- printf_filtered (" @ %s",
- local_hex_string_custom ((unsigned long) p->sec_ptr->filepos, "08l"));
- printf_filtered (" is %s", bfd_section_name (p->bfd, p->sec_ptr));
- if (p->bfd != abfd) {
- printf_filtered (" in %s", bfd_get_filename (p->bfd));
- }
- printf_filtered ("\n");
- }
-}
-
-
-static void
-exec_files_info (t)
- struct target_ops *t;
-{
- register struct vmap *vp = vmap;
-
- print_section_info (t, exec_bfd);
-
- if (!vp)
- return;
-
- printf_unfiltered("\tMapping info for file `%s'.\n", vp->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; 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 ? ")" : "");
-}
-
-#ifdef DAMON
-/* Damon's implementation of set_section_command! It is based on the sex member
- (which is a section pointer from vmap) of vmap.
- We will not have multiple vmap entries (one for each section), rather transmit
- text and data base offsets and fix them at the same time. Elimination of sex
- entry in vmap make this function obsolute, use the one from exec.c.
- Need further testing!! FIXMEmgo. */
-
-static void
-set_section_command(args, from_tty)
-char *args;
-{
- register struct vmap *vp = vmap;
- char *secname;
- unsigned seclen;
- unsigned long secaddr;
- char secprint[100];
- long offset;
-
- if (args == 0)
- error("Must specify section name and its virtual address");
-
- /* Parse out section name */
- for (secname = args; !isspace(*args); args++)
- ;
- seclen = args - secname;
-
- /* Parse out new virtual address */
- secaddr = parse_and_eval_address(args);
-
- for (vp = vmap; vp; vp = vp->nxt) {
- if (!strncmp(secname
- , bfd_section_name(vp->bfd, vp->sex), seclen)
- && bfd_section_name(vp->bfd, vp->sex)[seclen] == '\0') {
- offset = secaddr - vp->tstart;
- vp->tstart += offset;
- vp->tend += offset;
- exec_files_info();
- return;
- }
- }
-
- if (seclen >= sizeof(secprint))
- seclen = sizeof(secprint) - 1;
- strncpy(secprint, secname, seclen);
- secprint[seclen] = '\0';
- error("Section %s not found", secprint);
-}
-#else
-static void
-set_section_command (args, from_tty)
- char *args;
- int from_tty;
-{
- struct section_table *p;
- char *secname;
- unsigned seclen;
- unsigned long secaddr;
- char secprint[100];
- long offset;
-
- if (args == 0)
- error ("Must specify section name and its virtual address");
-
- /* Parse out section name */
- for (secname = args; !isspace(*args); args++) ;
- seclen = args - secname;
-
- /* Parse out new virtual address */
- secaddr = parse_and_eval_address (args);
-
- for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) {
- if (!strncmp (secname, bfd_section_name (exec_bfd, p->sec_ptr), seclen)
- && bfd_section_name (exec_bfd, p->sec_ptr)[seclen] == '\0') {
- offset = secaddr - p->addr;
- p->addr += offset;
- p->endaddr += offset;
- if (from_tty)
- exec_files_info(&exec_ops);
- return;
- }
- }
- if (seclen >= sizeof (secprint))
- seclen = sizeof (secprint) - 1;
- strncpy (secprint, secname, seclen);
- secprint[seclen] = '\0';
- error ("Section %s not found", secprint);
-}
-
-#endif /* !DAMON */
-
-struct target_ops exec_ops = {
- "exec", "Local exec file",
- "Use an executable file as a target.\n\
-Specify the filename of the executable file.",
- exec_file_command, exec_close, /* open, close */
- find_default_attach, 0, 0, 0, /* attach, detach, resume, wait, */
- 0, 0, /* fetch_registers, store_registers, */
- 0, /* prepare_to_store */
- xfer_memory, exec_files_info,
- 0, 0, /* insert_breakpoint, remove_breakpoint, */
- 0, 0, 0, 0, 0, /* terminal stuff */
- 0, 0, /* kill, load */
- 0, /* lookup sym */
- find_default_create_inferior,
- 0, /* mourn_inferior */
- 0, /* can_run */
- 0, /* notice_signals */
- file_stratum, 0, /* next */
- 0, 1, 0, 0, 0, /* all mem, mem, stack, regs, exec */
- 0, 0, /* section pointers */
- OPS_MAGIC, /* Always the last thing */
-};
-\f
-/* Core file stuff. */
-
-/* Relocate symtabs and read in shared library info, based on symbols
- from the core file. */
-void
-xcoff_relocate_core ()
-{
-/* Offset of member MEMBER in a struct of type TYPE. */
-#ifndef offsetof
-#define offsetof(TYPE, MEMBER) ((int) &((TYPE *)0)->MEMBER)
-#endif
-
-/* Size of a struct ld_info except for the variable-length filename. */
-#define LDINFO_SIZE (offsetof (struct ld_info, ldinfo_filename))
-
- sec_ptr ldinfo_sec;
- int offset = 0;
- struct ld_info *ldip;
- struct vmap *vp;
-
- /* Allocated size of buffer. */
- int buffer_size = LDINFO_SIZE;
- char *buffer = xmalloc (buffer_size);
- struct cleanup *old = make_cleanup (free_current_contents, &buffer);
-
- /* FIXME, this restriction should not exist. For now, though I'll
- avoid coredumps with error() pending a real fix. */
- if (vmap == NULL)
- error
- ("Can't debug a core file without an executable file (on the RS/6000)");
-
- ldinfo_sec = bfd_get_section_by_name (core_bfd, ".ldinfo");
- if (ldinfo_sec == NULL)
- {
-bfd_err:
- fprintf_filtered (gdb_stderr, "Couldn't get ldinfo from core file: %s\n",
- bfd_errmsg (bfd_error));
- do_cleanups (old);
- return;
- }
- do
- {
- int i;
- int names_found = 0;
-
- /* Read in everything but the name. */
- if (bfd_get_section_contents (core_bfd, ldinfo_sec, buffer,
- offset, LDINFO_SIZE) == 0)
- goto bfd_err;
-
- /* Now the name. */
- i = LDINFO_SIZE;
- do
- {
- if (i == buffer_size)
- {
- buffer_size *= 2;
- buffer = xrealloc (buffer, buffer_size);
- }
- if (bfd_get_section_contents (core_bfd, ldinfo_sec, &buffer[i],
- offset + i, 1) == 0)
- goto bfd_err;
- if (buffer[i++] == '\0')
- ++names_found;
- } while (names_found < 2);
-
- ldip = (struct ld_info *)buffer;
-
- /* Can't use a file descriptor from the core file; need to open it. */
- ldip->ldinfo_fd = -1;
-
- /* The first ldinfo is for the exec file, allocated elsewhere. */
- if (offset == 0)
- vp = vmap;
- else
- vp = add_vmap (ldip);
-
- offset += ldip->ldinfo_next;
-
- /* We can assume pointer == CORE_ADDR, this code is native only. */
- vp->tstart = (CORE_ADDR) ldip->ldinfo_textorg;
- vp->tend = vp->tstart + ldip->ldinfo_textsize;
- vp->dstart = (CORE_ADDR) ldip->ldinfo_dataorg;
- vp->dend = vp->dstart + ldip->ldinfo_datasize;
-
- if (vp->tadj != 0) {
- vp->tstart += vp->tadj;
- vp->tend += vp->tadj;
- }
-
- /* Unless this is the exec file,
- add our sections to the section table for the core target. */
- if (vp != vmap)
- {
- int count;
- struct section_table *stp;
-
- count = core_ops.to_sections_end - core_ops.to_sections;
- count += 2;
- core_ops.to_sections = (struct section_table *)
- xrealloc (core_ops.to_sections,
- sizeof (struct section_table) * count);
- core_ops.to_sections_end = core_ops.to_sections + count;
- stp = core_ops.to_sections_end - 2;
-
- /* "Why do we add bfd_section_vma?", I hear you cry.
- Well, the start of the section in the file is actually
- that far into the section as the struct vmap understands it.
- So for text sections, bfd_section_vma tends to be 0x200,
- and if vp->tstart is 0xd0002000, then the first byte of
- the text section on disk corresponds to address 0xd0002200. */
- stp->bfd = vp->bfd;
- stp->sec_ptr = bfd_get_section_by_name (stp->bfd, ".text");
- stp->addr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->tstart;
- stp->endaddr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->tend;
- stp++;
-
- stp->bfd = vp->bfd;
- stp->sec_ptr = bfd_get_section_by_name (stp->bfd, ".data");
- stp->addr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->dstart;
- stp->endaddr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->dend;
- }
-
- vmap_symtab (vp);
-
- add_text_to_loadinfo ((CORE_ADDR)ldip->ldinfo_textorg,
- (CORE_ADDR)ldip->ldinfo_dataorg);
- } while (ldip->ldinfo_next != 0);
- vmap_exec ();
- do_cleanups (old);
-}
-
-void
-_initialize_exec()
-{
-
- add_com("file", class_files, file_command,
- "Use FILE as program to be debugged.\n\
-It is read for its symbols, for getting the contents of pure memory,\n\
-and it is the program executed when you use the `run' command.\n\
-If FILE cannot be found as specified, your execution directory path\n\
-($PATH) is searched for a command of that name.\n\
-No arg means to have no executable file and no symbols.");
-
- add_com("exec-file", class_files, exec_file_command,
- "Use FILE as program for getting contents of pure memory.\n\
-If FILE cannot be found as specified, your execution directory path\n\
-is searched for a command of that name.\n\
-No arg means have no executable file.");
-
- add_com("section", class_files, set_section_command,
- "Change the base address of section SECTION of the exec file to ADDR.\n\
-This can be used if the exec file does not contain section addresses,\n\
-(such as in the a.out format), or when the addresses specified in the\n\
-file itself are wrong. Each section must be changed separately. The\n\
-``info files'' command lists all the sections and their addresses.");
-
- add_target(&exec_ops);
-}
projects / deliverable / binutils-gdb.git / blobdiff