/* Execute AIXcoff files, for GDB.
- Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc.
+ Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
Derived from exec.c. Modified by IBM Corporation.
Donated by IBM Corporation and Cygnus Support.
/* xcoff-exec - deal with executing XCOFF files. */
-#include <stdio.h>
+#include "defs.h"
+
#include <sys/types.h>
#include <sys/param.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/ldr.h>
-#include "defs.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"
-struct section_table *exec_sections, *exec_sections_end;
+/* Prototypes for local functions */
+
+static void
+file_command PARAMS ((char *, int));
+
+static void
+exec_close PARAMS ((int));
-#define eq(s0, s1) !strcmp(s0, s1)
+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 child_create_inferior (), child_attach ();
extern void add_syms_addr_command ();
extern void symbol_file_command ();
static void exec_files_info();
-/*
- * the vmap struct is used to describe the virtual address space of
- * the target we are manipulating. The first entry is always the "exec"
- * file. Subsequent entries correspond to other objects that are
- * mapped into the address space of a process created from the "exec" file.
- * These are either in response to exec()ing the file, in which case all
- * shared libraries are loaded, or a "load" system call, followed by the
- * user's issuance of a "load" command.
- */
-struct vmap {
- struct vmap *nxt; /* ^ to next in chain */
- bfd *bfd; /* BFD for mappable object library */
- char *name; /* ^ to object file name */
- char *member; /* ^ to member name */
- CORE_ADDR tstart; /* virtual addr where member is mapped */
- CORE_ADDR tend; /* virtual upper bound of member */
- CORE_ADDR tadj; /* heuristically derived adjustment */
- CORE_ADDR dstart; /* virtual address of data start */
- CORE_ADDR dend; /* vitrual address of data end */
-};
-
-
-struct vmap_and_bfd {
- bfd *pbfd;
- struct vmap *pvmap;
-};
-
-static struct vmap *vmap; /* current vmap */
+struct vmap *vmap; /* current vmap */
extern struct target_ops exec_ops;
/* exec_close - done with exec file, clean up all resources. */
-void
-exec_close(quitting) {
- register struct vmap *vp, *nxt;
-
- for (nxt = vmap; vp = nxt; ) {
- nxt = vp->nxt;
- bfd_close(vp->bfd);
- free_named_symtabs(vp->name, vp->member); /* XXX */
- free(vp);
- }
+static void
+exec_close(quitting)
+{
+ register struct vmap *vp, *nxt;
+ struct objfile *obj;
+
+ 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);
+ 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;
- vmap = 0;
- exec_bfd = 0;
+ if (exec_ops.to_sections) {
+ free (exec_ops.to_sections);
+ exec_ops.to_sections = NULL;
+ exec_ops.to_sections_end = NULL;
+ }
}
/*
exec_file_command(filename, from_tty)
char *filename;
{
- bfd *bfd;
-
target_preopen(from_tty);
+
+ /* Remove any previous exec file. */
unpush_target(&exec_ops);
/* Now open and digest the file the user requested, if any. */
int scratch_chan;
filename = tilde_expand(filename);
- make_cleanup(free, filename);
+ make_cleanup (free, filename);
- scratch_chan = openp(getenv("PATH"), 1, filename, O_RDONLY, 0
- , &scratch_pathname);
+ scratch_chan = openp(getenv("PATH"), 1, filename,
+ write_files? O_RDWR: O_RDONLY, 0,
+ &scratch_pathname);
if (scratch_chan < 0)
perror_with_name(filename);
- bfd = bfd_fdopenr(scratch_pathname, NULL, scratch_chan);
- if (!bfd)
+ exec_bfd = bfd_fdopenr(scratch_pathname, NULL, 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(bfd, bfd_object))
- error("\"%s\": not in executable format: %s."
- , scratch_pathname, bfd_errmsg(bfd_error));
+ 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 (bfd, 0);
+ map_vmap (exec_bfd, 0);
if (!vmap)
- error("Can't find the file sections in `%s': %s"
- , bfd->filename, bfd_errmsg(bfd_error));
-
- exec_bfd = bfd;
+ error("Can't find the file sections in `%s': %s",
+ exec_bfd->filename, bfd_errmsg(bfd_error));
- if (build_section_table (exec_bfd, &exec_sections, &exec_sections_end))
+ 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));
* novelty. Why did GDB go through four major releases before this
* command was added?
*/
-void
+static void
file_command(arg, from_tty)
char *arg; {
table_pp_char is a char * to get it through bfd_map_over_sections;
we cast it back to its proper type. */
-void
+static void
add_to_section_table (abfd, asect, table_pp_char)
bfd *abfd;
sec_ptr 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);
count = bfd_count_sections (some_bfd);
if (count == 0)
- abort(); /* return 1? */
+ 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)
- abort();
+ fatal ("aborting");
/* We could realloc the table, but it probably loses for most files. */
return 0;
}
-
-/*
- * lookup_symtab_bfd - find if we currently have any symbol tables from bfd
- */
-struct objfile *
-lookup_objfile_bfd(bfd *bfd) {
- register struct objfile *s;
-
- for (s = object_files; s; s = s->next)
- if (s->obfd == bfd)
- return s;
- return 0;
-}
-
-
+\f
void
-sex_to_vmap(bfd *bf, sec_ptr sex, struct vmap_and_bfd *vmap_bfd)
+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;
if ((bfd_get_section_flags(bf, sex) & SEC_LOAD) == 0)
return;
- if (!strcmp(bfd_section_name(bf, sex), ".text")) {
+ if (STREQ(bfd_section_name(bf, sex), ".text")) {
vp->tstart = 0;
vp->tend = vp->tstart + bfd_section_size(bf, sex);
- /* This is quite a tacky way to recognize the `exec' load segment (rather
- than shared libraries. You should use `arch' instead. FIXMEmgo */
- if (!vmap)
- vp->tadj = sex->filepos - bfd_section_vma(bf, sex);
- else
- vp->tadj = 0;
+ /* 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 (!strcmp(bfd_section_name(bf, sex), ".data")) {
+ else if (STREQ(bfd_section_name(bf, sex), ".data")) {
vp->dstart = 0;
vp->dend = vp->dstart + bfd_section_size(bf, sex);
}
- else if (!strcmp(bfd_section_name(bf, sex), ".bss")) /* FIXMEmgo */
+ else if (STREQ(bfd_section_name(bf, sex), ".bss")) /* FIXMEmgo */
printf ("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". If we have not yet read in symbols for this file, do so. */
-
+ 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;
- char *name;
vp = (void*) xmalloc (sizeof (*vp));
+ bzero (vp, sizeof (*vp));
vp->nxt = 0;
vp->bfd = bf;
vp->name = bfd_get_filename(arch ? arch : bf);
vmap_bfd.pvmap = vp;
bfd_map_over_sections (bf, sex_to_vmap, &vmap_bfd);
- obj = lookup_objfile_bfd (bf);
- if (exec_bfd && !obj) {
- name = savestring (bfd_get_filename (bf), strlen (bfd_get_filename (bf)));
- obj = allocate_objfile (bf, name);
- syms_from_objfile (obj, 0, 0);
- }
-
/* find the end of the list, and append. */
for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt)
;
*vpp = vp;
-}
-
-/* true, if symbol table and misc_function_vector is relocated. */
-
-int symtab_relocated = 0;
+ return vp;
+}
/* vmap_symtab - handle symbol translation on vmapping */
-vmap_symtab(vp, old_start, vip)
-register struct vmap *vp;
-CORE_ADDR old_start;
-struct stat *vip;
+static void
+vmap_symtab (vp)
+ register struct vmap *vp;
{
- register struct symtab *s;
-
- /*
- * for each symbol table generated from the vp->bfd
- */
- for (s = symtab_list; s; s = s->next) {
-
- /* skip over if this is not relocatable and doesn't have a line table */
- if (s->nonreloc && !LINETABLE (s))
- continue;
-
- /* matching the symbol table's BFD and the *vp's BFD is hairy.
- exec_file creates a seperate BFD for possibly the
- same file as symbol_file.FIXME ALL THIS MUST BE RECTIFIED. */
-
- if (s->objfile->obfd == vp->bfd) {
- /* if they match, we luck out. */
- ;
- } else if (vp->member[0]) {
- /* no match, and member present, not this one. */
- continue;
- } else {
- struct stat si;
- FILE *io;
-
- /*
- * no match, and no member. need to be sure.
- */
- io = bfd_cache_lookup(s->objfile->obfd);
- if (!io)
- fatal("cannot find BFD's iostream for sym");
- /*
- * see if we are referring to the same file
- */
- if (fstat(fileno(io), &si) < 0)
- fatal("cannot fstat BFD for sym");
-
- if (si.st_dev != vip->st_dev
- || si.st_ino != vip->st_ino)
- continue;
- }
-
- if (vp->tstart != old_start)
- vmap_symtab_1(s, vp, old_start);
- }
+ 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;
+ }
- if (vp->tstart != old_start)
- fixup_misc_vector (vp->tstart - old_start);
+ new_offsets = alloca
+ (sizeof (struct section_offsets)
+ + sizeof (new_offsets->offsets) * objfile->num_sections);
- symtab_relocated = 1;
+ 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);
}
-
-fixup_misc_vector (int disp)
+/* Add symbols for an objfile. */
+static int
+objfile_symbol_add (arg)
+ char *arg;
{
- int ii;
- for (ii=0; ii < misc_function_count; ++ii)
- if (misc_function_vector[ii].address < 0x10000000)
- misc_function_vector[ii].address += disp;
+ 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 *));
-vmap_symtab_1(s, vp, old_start)
-register struct symtab *s;
-register struct vmap *vp;
-CORE_ADDR old_start;
-{
- register int i, j;
- int len, blen;
- register struct linetable *l;
- struct blockvector *bv;
- register struct block *b;
- int depth;
- register ulong reloc, dreloc;
-
- if ((reloc = vp->tstart - old_start) == 0)
- return;
-
- dreloc = vp->dstart; /* data relocation */
-
- /*
- * The line table must be relocated. This is only present for
- * b.text sections, so only vp->text type maps need be considered.
- */
- l = LINETABLE (s);
- len = l->nitems;
- for (i = 0; i < len; i++)
- l->item[i].pc += reloc;
+/* Add a new vmap entry based on ldinfo() information.
- /* if this symbol table is not relocatable, only line table should
- be relocated and the rest ignored. */
- if (s->nonreloc)
- return;
-
- bv = BLOCKVECTOR(s);
- len = BLOCKVECTOR_NBLOCKS(bv);
-
- for (i = 0; i < len; i++) {
- b = BLOCKVECTOR_BLOCK(bv, i);
-
- BLOCK_START(b) += reloc;
- BLOCK_END(b) += reloc;
-
- blen = BLOCK_NSYMS(b);
- for (j = 0; j < blen; j++) {
- register struct symbol *sym;
-
- sym = BLOCK_SYM(b, j);
- switch (SYMBOL_NAMESPACE(sym)) {
- case STRUCT_NAMESPACE:
- case UNDEF_NAMESPACE:
- continue;
-
- case LABEL_NAMESPACE:
- case VAR_NAMESPACE:
- break;
- }
-
- switch (SYMBOL_CLASS(sym)) {
- case LOC_CONST:
- case LOC_CONST_BYTES:
- case LOC_LOCAL:
- case LOC_REGISTER:
- case LOC_ARG:
- case LOC_LOCAL_ARG:
- case LOC_REF_ARG:
- case LOC_REGPARM:
- case LOC_TYPEDEF:
- continue;
-
-#ifdef FIXME
- case LOC_EXTERNAL:
-#endif
- case LOC_LABEL:
- SYMBOL_VALUE_ADDRESS(sym) += reloc;
- break;
-
- case LOC_STATIC:
- SYMBOL_VALUE_ADDRESS(sym) += dreloc;
- break;
-
- case LOC_BLOCK:
- break;
-
- default:
- fatal("botched symbol class %x"
- , SYMBOL_CLASS(sym));
- break;
- }
- }
- }
-}
+ 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.
-/*
- * add_vmap - add a new vmap entry based on ldinfo() information
- */
+ Return the vmap new entry. */
+static struct vmap *
add_vmap(ldi)
-register struct ld_info *ldi; {
+ register struct ld_info *ldi;
+{
bfd *bfd, *last;
- register char *mem;
+ 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;
- bfd = bfd_fdopenr(ldi->ldinfo_filename, NULL, ldi->ldinfo_fd);
+ 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. */
+ bfd = bfd_openr (objname, NULL);
+ else
+ bfd = bfd_fdopenr(objname, NULL, ldi->ldinfo_fd);
if (!bfd)
- error("Could not open `%s' as an executable file: %s"
- , ldi->ldinfo_filename, bfd_errmsg(bfd_error));
+ 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(bfd, bfd_object))
- map_vmap (bfd, 0);
+ vp = map_vmap (bfd, 0);
else if (bfd_check_format(bfd, bfd_archive)) {
last = 0;
* FIXME??? am I tossing BFDs? bfd?
*/
while (last = bfd_openr_next_archived_file(bfd, last))
- if (eq(mem, last->filename))
+ if (STREQ(mem, last->filename))
break;
if (!last) {
- bfd_close(bfd);
-/* FIXME -- should be error */
- warning("\"%s\": member \"%s\" missing.",
- bfd->filename, mem);
- return;
+ bfd_close(bfd);
+ /* FIXME -- should be error */
+ warning("\"%s\": member \"%s\" missing.", bfd->filename, mem);
+ return;
}
if (!bfd_check_format(last, bfd_object)) {
goto obj_err;
}
- map_vmap (last, bfd);
+ vp = map_vmap (last, bfd);
}
else {
obj_err:
bfd_close(bfd);
-/* FIXME -- should be error */
- warning("\"%s\": not in executable format: %s."
- , ldi->ldinfo_filename, bfd_errmsg(bfd_error));
- return;
+ 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. Otherwise after
- the inferior process terminates, symbol table is relocated but there is
- no inferior process. Thus, we have to use `exec' bfd, rather than the inferior
- process's memory space, when lookipng at symbols.
- `exec_sections' need to be relocated only once though, as long as the exec
- file was not changed.
+/* 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_sections) {
- printf ("WARNING: vmap not found in vmap_exec()!\n");
- return;
- }
- /* First exec section is `.text', second is `.data'. If this is changed,
- then this routine will choke. Better you should check section names,
- FIXMEmgo. */
- exec_sections [0].addr += vmap->tstart;
- exec_sections [0].endaddr += vmap->tstart;
- exec_sections [1].addr += vmap->dstart;
- exec_sections [1].endaddr += vmap->dstart;
-}
+ 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;
return adjustment;
}
-
+#endif
/*
* vmap_ldinfo - update VMAP info with ldinfo() information
, name);
retry:
for (got_one = 0, vp = vmap; vp; vp = vp->nxt) {
- FILE *io;
+ FILE *io;
- /* The filenames are not always sufficient to match on. */
- if ((name[0] == "/"
- && !eq(name, vp->name))
- || (memb[0] && !eq(memb, vp->member)))
- continue;
+ /* 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... */
- /* totally opaque! */
- io = bfd_cache_lookup(vp->bfd);
- if (!io)
- fatal("cannot find BFD's iostream for %s"
- , vp->name);
+ /* The filenames are not always sufficient to match on. */
- /* see if we are referring to the same file */
- if (fstat(fileno(io), &vi) < 0)
- fatal("cannot fstat BFD for %s", vp->name);
+ if ((name[0] == '/' && !STREQ(name, vp->name))
+ || (memb[0] && !STREQ(memb, vp->member)))
+ continue;
- if (ii.st_dev != vi.st_dev || ii.st_ino != vi.st_ino)
- continue;
+ io = bfd_cache_lookup(vp->bfd); /* totally opaque! */
+ if (!io)
+ fatal("cannot find BFD's iostream for %s", vp->name);
- if (!retried)
- close(ldi->ldinfo_fd);
+ /* see if we are referring to the same file */
- ++got_one;
+ if (fstat(fileno(io), &vi) < 0)
+ fatal("cannot fstat BFD for %s", vp->name);
- /* found a corresponding VMAP. remap! */
- ostart = vp->tstart;
+ if (ii.st_dev != vi.st_dev || ii.st_ino != vi.st_ino)
+ continue;
- vp->tstart = ldi->ldinfo_textorg;
- vp->tend = vp->tstart + ldi->ldinfo_textsize;
- vp->dstart = ldi->ldinfo_dataorg;
- vp->dend = vp->dstart + ldi->ldinfo_datasize;
+ if (!retried)
+ close(ldi->ldinfo_fd);
- if (vp->tadj) {
- vp->tstart += vp->tadj;
- vp->tend += vp->tadj;
- }
+ ++got_one;
+
+ /* found a corresponding VMAP. remap! */
+ ostart = vp->tstart;
- /* relocate symbol table(s). */
- vmap_symtab(vp, ostart, &vi);
+ /* 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;
- /* there may be more, so we don't break out of the loop. */
+ 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;
+ /* 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)));
- breakpoint_re_set();
}
/*
vmap_inferior() {
if (inferior_pid == 0)
- return 0; /* normal processing */
+ return 0; /* normal processing */
exec_files_info();
-
return 1;
}
we just tail-call it with more arguments to select between them. */
int
-xfer_memory (memaddr, myaddr, len, write, abfd, sections, sections_end)
+xfer_memory (memaddr, myaddr, len, write, target)
CORE_ADDR memaddr;
char *myaddr;
int len;
int write;
- bfd *abfd;
- struct section_table *sections, *sections_end;
+ struct target_ops *target;
{
boolean res;
struct section_table *p;
CORE_ADDR nextsectaddr, memend;
- boolean (*xfer_fn) ();
+ boolean (*xfer_fn) PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type));
if (len <= 0)
- abort();
+ fatal ("aborting");
memend = memaddr + len;
xfer_fn = write? bfd_set_section_contents: bfd_get_section_contents;
nextsectaddr = memend;
- for (p = sections; p < sections_end; p++)
+ 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 (abfd, p->sec_ptr, myaddr, memaddr - p->addr, len);
+ 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 overlaps the transfer. Just do half. */
len = p->endaddr - memaddr;
- res = xfer_fn (abfd, p->sec_ptr, myaddr, memaddr - p->addr, len);
+ res = xfer_fn (p->bfd, p->sec_ptr, myaddr, memaddr - p->addr, len);
return (res != false)? len: 0;
}
else if (p->addr < nextsectaddr)
return - (nextsectaddr - memaddr); /* Next boundary where we can help */
}
-/* The function called by target_xfer_memory via our target_ops */
-
-int
-exec_xfer_memory (memaddr, myaddr, len, write)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int write;
+void
+print_section_info (t, abfd)
+ struct target_ops *t;
+ bfd *abfd;
{
- return xfer_memory (memaddr, myaddr, len, write,
- exec_bfd, exec_sections, exec_sections_end);
+ struct section_table *p;
+
+ 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 (p->addr, "08"));
+ printf_filtered (" - %s", local_hex_string_custom (p->endaddr, "08"));
+ if (info_verbose)
+ printf_filtered (" @ %s",
+ local_hex_string_custom (p->sec_ptr->filepos, "08"));
+ 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");
+ }
}
-/*
- * exec_files_info - "info files" command processor
- */
+
static void
-exec_files_info() {
- register struct vmap *vp = vmap;
+exec_files_info (t)
+ struct target_ops *t;
+{
+ register struct vmap *vp = vmap;
+
+ print_section_info (t, exec_bfd);
- if (!vp)
- return;
-
- printf("\tMapping info for file `%s'.\n", vp->name);
- printf("\t %8.8s %8.8s %8.8s %s\n"
- , "start", "end", "section", "file(member)");
-
- for (; vp; vp = vp->nxt)
- printf("\t0x%8.8x 0x%8.8x %s%s%s%s\n"
- , vp->tstart
- , vp->tend
- , vp->name
- , *vp->member ? "(" : ""
- , vp->member
- , *vp->member ? ")" : "");
+ if (!vp)
+ return;
+
+ printf("\tMapping info for file `%s'.\n", vp->name);
+
+ printf("\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("\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
/* Parse out new virtual address */
secaddr = parse_and_eval_address (args);
- for (p = exec_sections; p < exec_sections_end; p++) {
+ 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;
- exec_files_info();
+ if (from_tty)
+ exec_files_info(&exec_ops);
return;
}
}
"Use an executable file as a target.\n\
Specify the filename of the executable file.",
exec_file_command, exec_close, /* open, close */
- child_attach, 0, 0, 0, /* attach, detach, resume, wait, */
+ find_default_attach, 0, 0, 0, /* attach, detach, resume, wait, */
0, 0, /* fetch_registers, store_registers, */
- 0, 0, 0, /* prepare_to_store, conv_to, conv_from, */
- exec_xfer_memory, exec_files_info,
+ 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, 0, /* call fn, lookup sym */
- child_create_inferior,
+ 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 (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()
projects / deliverable / binutils-gdb.git / blobdiff