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cell-binutils  2.17cvs20070401
Classes | Defines | Functions | Variables
trad-core.c File Reference
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "libaout.h"
#include <sys/param.h>
#include <signal.h>
#include <sys/user.h>

Go to the source code of this file.

Classes

struct  trad_core_struct

Defines

#define core_upage(bfd)   (&((bfd)->tdata.trad_core_data->u))
#define core_datasec(bfd)   ((bfd)->tdata.trad_core_data->data_section)
#define core_stacksec(bfd)   ((bfd)->tdata.trad_core_data->stack_section)
#define core_regsec(bfd)   ((bfd)->tdata.trad_core_data->reg_section)
#define trad_unix_core_file_matches_executable_p   generic_core_file_matches_executable_p
#define NO_GET   ((bfd_vma (*) (const void *)) swap_abort)
#define NO_PUT   ((void (*) (bfd_vma, void *)) swap_abort)
#define NO_GETS   ((bfd_signed_vma (*) (const void *)) swap_abort)
#define NO_GET64   ((bfd_uint64_t (*) (const void *)) swap_abort)
#define NO_PUT64   ((void (*) (bfd_uint64_t, void *)) swap_abort)
#define NO_GETS64   ((bfd_int64_t (*) (const void *)) swap_abort)

Functions

const bfd_target
*trad_unix_core_file_p 
PARAMS ((bfd *abfd))
static void swap_abort PARAMS ((void))
const bfd_targettrad_unix_core_file_p (bfd *abfd)
char * trad_unix_core_file_failing_command (bfd *abfd)
int trad_unix_core_file_failing_signal (ignore_abfd)
static void swap_abort ()

Variables

const bfd_target trad_core_vec

Class Documentation

struct trad_core_struct

Definition at line 61 of file aix386-core.c.

Collaboration diagram for trad_core_struct:
Class Members
asection * data_section
struct corehdr * hdr
asection * reg2_section
asection * reg_section
asection * sections
asection * stack_section

Define Documentation

#define core_datasec (   bfd)    ((bfd)->tdata.trad_core_data->data_section)

Definition at line 59 of file trad-core.c.

#define core_regsec (   bfd)    ((bfd)->tdata.trad_core_data->reg_section)

Definition at line 61 of file trad-core.c.

#define core_stacksec (   bfd)    ((bfd)->tdata.trad_core_data->stack_section)

Definition at line 60 of file trad-core.c.

#define core_upage (   bfd)    (&((bfd)->tdata.trad_core_data->u))

Definition at line 58 of file trad-core.c.

#define NO_GET   ((bfd_vma (*) (const void *)) swap_abort)

Definition at line 264 of file trad-core.c.

#define NO_GET64   ((bfd_uint64_t (*) (const void *)) swap_abort)

Definition at line 267 of file trad-core.c.

#define NO_GETS   ((bfd_signed_vma (*) (const void *)) swap_abort)

Definition at line 266 of file trad-core.c.

#define NO_GETS64   ((bfd_int64_t (*) (const void *)) swap_abort)

Definition at line 269 of file trad-core.c.

#define NO_PUT   ((void (*) (bfd_vma, void *)) swap_abort)

Definition at line 265 of file trad-core.c.

#define NO_PUT64   ((void (*) (bfd_uint64_t, void *)) swap_abort)

Definition at line 268 of file trad-core.c.

Definition at line 68 of file trad-core.c.


Function Documentation

static void swap_abort PARAMS ( (void)  ) [static]
static void swap_abort ( void  ) [static]

Definition at line 259 of file trad-core.c.

{
  abort (); /* This way doesn't require any declaration for ANSI to fuck up */
}

Definition at line 234 of file trad-core.c.

{
#ifndef NO_CORE_COMMAND
  char *com = abfd->tdata.trad_core_data->u.u_comm;
  if (*com)
    return com;
  else
#endif
    return 0;
}

Definition at line 247 of file trad-core.c.

{
#ifdef TRAD_UNIX_CORE_FILE_FAILING_SIGNAL
  return TRAD_UNIX_CORE_FILE_FAILING_SIGNAL(ignore_abfd);
#else
  return -1;         /* FIXME, where is it? */
#endif
}

Definition at line 74 of file trad-core.c.

{
  int val;
  struct user u;
  struct trad_core_struct *rawptr;
  bfd_size_type amt;
  flagword flags;

#ifdef TRAD_CORE_USER_OFFSET
  /* If defined, this macro is the file position of the user struct.  */
  if (bfd_seek (abfd, (file_ptr) TRAD_CORE_USER_OFFSET, SEEK_SET) != 0)
    return 0;
#endif

  val = bfd_bread ((void *) &u, (bfd_size_type) sizeof u, abfd);
  if (val != sizeof u)
    {
      /* Too small to be a core file */
      bfd_set_error (bfd_error_wrong_format);
      return 0;
    }

  /* Sanity check perhaps??? */
  if (u.u_dsize > 0x1000000)       /* Remember, it's in pages...  */
    {
      bfd_set_error (bfd_error_wrong_format);
      return 0;
    }
  if (u.u_ssize > 0x1000000)
    {
      bfd_set_error (bfd_error_wrong_format);
      return 0;
    }

  /* Check that the size claimed is no greater than the file size.  */
  {
    struct stat statbuf;

    if (bfd_stat (abfd, &statbuf) < 0)
      return 0;

    if ((ufile_ptr) NBPG * (UPAGES + u.u_dsize
#ifdef TRAD_CORE_DSIZE_INCLUDES_TSIZE
                         - u.u_tsize
#endif
                         + u.u_ssize)
       > (ufile_ptr) statbuf.st_size)
      {
       bfd_set_error (bfd_error_wrong_format);
       return 0;
      }
#ifndef TRAD_CORE_ALLOW_ANY_EXTRA_SIZE
    if (((ufile_ptr) NBPG * (UPAGES + u.u_dsize + u.u_ssize)
#ifdef TRAD_CORE_EXTRA_SIZE_ALLOWED
       /* Some systems write the file too big.  */
        + TRAD_CORE_EXTRA_SIZE_ALLOWED
#endif
        )
       < (ufile_ptr) statbuf.st_size)
      {
       /* The file is too big.  Maybe it's not a core file
          or we otherwise have bad values for u_dsize and u_ssize).  */
       bfd_set_error (bfd_error_wrong_format);
       return 0;
      }
#endif
  }

  /* OK, we believe you.  You're a core file (sure, sure).  */

  /* Allocate both the upage and the struct core_data at once, so
     a single free() will free them both.  */
  amt = sizeof (struct trad_core_struct);
  rawptr = (struct trad_core_struct *) bfd_zmalloc (amt);
  if (rawptr == NULL)
    return 0;

  abfd->tdata.trad_core_data = rawptr;

  rawptr->u = u; /*Copy the uarea into the tdata part of the bfd */

  /* Create the sections.  */

  flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
  core_stacksec(abfd) = bfd_make_section_anyway_with_flags (abfd, ".stack",
                                                     flags);
  if (core_stacksec (abfd) == NULL)
    goto fail;
  core_datasec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".data",
                                                     flags);
  if (core_datasec (abfd) == NULL)
    goto fail;
  core_regsec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".reg",
                                                    SEC_HAS_CONTENTS);
  if (core_regsec (abfd) == NULL)
    goto fail;

  core_datasec (abfd)->size =  NBPG * u.u_dsize
#ifdef TRAD_CORE_DSIZE_INCLUDES_TSIZE
    - NBPG * u.u_tsize
#endif
      ;
  core_stacksec (abfd)->size = NBPG * u.u_ssize;
  core_regsec (abfd)->size = NBPG * UPAGES; /* Larger than sizeof struct u */

  /* What a hack... we'd like to steal it from the exec file,
     since the upage does not seem to provide it.  FIXME.  */
#ifdef HOST_DATA_START_ADDR
  core_datasec (abfd)->vma = HOST_DATA_START_ADDR;
#else
  core_datasec (abfd)->vma = HOST_TEXT_START_ADDR + (NBPG * u.u_tsize);
#endif

#ifdef HOST_STACK_START_ADDR
  core_stacksec (abfd)->vma = HOST_STACK_START_ADDR;
#else
  core_stacksec (abfd)->vma = HOST_STACK_END_ADDR - (NBPG * u.u_ssize);
#endif

  /* This is tricky.  As the "register section", we give them the entire
     upage and stack.  u.u_ar0 points to where "register 0" is stored.
     There are two tricks with this, though.  One is that the rest of the
     registers might be at positive or negative (or both) displacements
     from *u_ar0.  The other is that u_ar0 is sometimes an absolute address
     in kernel memory, and on other systems it is an offset from the beginning
     of the `struct user'.

     As a practical matter, we don't know where the registers actually are,
     so we have to pass the whole area to GDB.  We encode the value of u_ar0
     by setting the .regs section up so that its virtual memory address
     0 is at the place pointed to by u_ar0 (by setting the vma of the start
     of the section to -u_ar0).  GDB uses this info to locate the regs,
     using minor trickery to get around the offset-or-absolute-addr problem.  */
  core_regsec (abfd)->vma = - (bfd_vma) (unsigned long) u.u_ar0;

  core_datasec (abfd)->filepos = NBPG * UPAGES;
  core_stacksec (abfd)->filepos = (NBPG * UPAGES) + NBPG * u.u_dsize
#ifdef TRAD_CORE_DSIZE_INCLUDES_TSIZE
    - NBPG * u.u_tsize
#endif
      ;
  core_regsec (abfd)->filepos = 0; /* Register segment is the upage */

  /* Align to word at least */
  core_stacksec (abfd)->alignment_power = 2;
  core_datasec (abfd)->alignment_power = 2;
  core_regsec (abfd)->alignment_power = 2;

  return abfd->xvec;

 fail:
  bfd_release (abfd, abfd->tdata.any);
  abfd->tdata.any = NULL;
  bfd_section_list_clear (abfd);
  return NULL;
}

Here is the call graph for this function:


Variable Documentation

Definition at line 271 of file trad-core.c.