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cell-binutils  2.17cvs20070401
Defines | Functions | Variables
coff-w65.c File Reference
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "coff/w65.h"
#include "coff/internal.h"
#include "libcoff.h"
#include "coffcode.h"

Go to the source code of this file.

Defines

#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER   (1)
#define SELECT_RELOC(x, howto)   { x.r_type = select_reloc(howto); }
#define BADMAG(x)   (W65BADMAG(x))
#define W65   1 /* Customize coffcode.h */
#define __A_MAGIC_SET__
#define SWAP_IN_RELOC_OFFSET   H_GET_32
#define SWAP_OUT_RELOC_OFFSET   H_PUT_32
#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst)
#define RTYPE2HOWTO(internal, relocentry)   rtype2howto(internal,relocentry)
#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr)   cache_ptr->addend = ext_reloc.r_offset;
#define RELOC_PROCESSING(relent, reloc, symbols, abfd, section)   reloc_processing(relent, reloc, symbols, abfd, section)
#define coff_reloc16_extra_cases   w65_reloc16_extra_cases
#define coff_reloc16_estimate   w65_reloc16_estimate
#define coff_bfd_get_relocated_section_contents   bfd_coff_reloc16_get_relocated_section_contents
#define coff_bfd_relax_section   bfd_coff_reloc16_relax_section

Functions

static int select_reloc PARAMS ((reloc_howto_type *))
static void rtype2howto PARAMS ((arelent *, struct internal_reloc *))
static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *))
static int w65_reloc16_estimate PARAMS ((bfd *, asection *, arelent *, unsigned int, struct bfd_link_info *))
static void w65_reloc16_extra_cases PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *, bfd_byte *, unsigned int *, unsigned int *))
static int select_reloc (reloc_howto_type *howto)
static void rtype2howto (arelent *internal, struct internal_reloc *dst)
static void reloc_processing (arelent *relent, struct internal_reloc *reloc, asymbol **symbols, bfd *abfd, asection *section)
static int w65_reloc16_estimate (bfd *abfd, asection *input_section, arelent *reloc, unsigned int shrink, struct bfd_link_info *link_info)
static void w65_reloc16_extra_cases (bfd *abfd, struct bfd_link_info *link_info, struct bfd_link_order *link_order, arelent *reloc, bfd_byte *data, unsigned int *src_ptr, unsigned int *dst_ptr)

Variables

static reloc_howto_type howto_table []

Define Documentation

#define __A_MAGIC_SET__

Definition at line 58 of file coff-w65.c.

#define BADMAG (   x)    (W65BADMAG(x))

Definition at line 56 of file coff-w65.c.

#define CALC_ADDEND (   abfd,
  symbol,
  ext_reloc,
  cache_ptr 
)    cache_ptr->addend = ext_reloc.r_offset;

Definition at line 88 of file coff-w65.c.

Definition at line 381 of file coff-w65.c.

Definition at line 383 of file coff-w65.c.

Definition at line 36 of file coff-w65.c.

Definition at line 375 of file coff-w65.c.

Definition at line 374 of file coff-w65.c.

#define RELOC_PROCESSING (   relent,
  reloc,
  symbols,
  abfd,
  section 
)    reloc_processing(relent, reloc, symbols, abfd, section)

Definition at line 91 of file coff-w65.c.

#define RTYPE2HOWTO (   internal,
  relocentry 
)    rtype2howto(internal,relocentry)

Definition at line 84 of file coff-w65.c.

#define SELECT_RELOC (   x,
  howto 
)    { x.r_type = select_reloc(howto); }

Definition at line 53 of file coff-w65.c.

Definition at line 61 of file coff-w65.c.

#define SWAP_OUT_RELOC_EXTRA (   abfd,
  src,
  dst 
)
Value:
dst->r_stuff[0] = 'S'; \
  dst->r_stuff[1] = 'C';

Definition at line 63 of file coff-w65.c.

Definition at line 62 of file coff-w65.c.

#define W65   1 /* Customize coffcode.h */

Definition at line 57 of file coff-w65.c.


Function Documentation

static int select_reloc PARAMS ( (reloc_howto_type *)  ) [static]
static void rtype2howto PARAMS ( (arelent *, struct internal_reloc *)  ) [static]
static void reloc_processing PARAMS ( (arelent *, struct internal_reloc *, asymbol **, bfd *, asection *)  ) [static]
static void reloc_processing ( arelent relent,
struct internal_reloc reloc,
asymbol **  symbols,
bfd abfd,
asection section 
) [static]

Definition at line 95 of file coff-w65.c.

{
  relent->address = reloc->r_vaddr;
  rtype2howto (relent, reloc);

  if (((int) reloc->r_symndx) > 0)
    relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
  else
    relent->sym_ptr_ptr = (asymbol **) bfd_abs_section_ptr->symbol_ptr_ptr;

  relent->addend = reloc->r_offset;

  relent->address -= section->vma;
  /*  relent->section = 0;*/
}

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static void rtype2howto ( arelent internal,
struct internal_reloc dst 
) [static]

Definition at line 77 of file coff-w65.c.

{
  internal->howto = howto_table + dst->r_type - 1;
}

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static int select_reloc ( reloc_howto_type *  howto) [static]

Definition at line 68 of file coff-w65.c.

{
  return howto->type ;
}
static int w65_reloc16_estimate ( bfd abfd,
asection input_section,
arelent reloc,
unsigned int  shrink,
struct bfd_link_info link_info 
) [static]

Definition at line 117 of file coff-w65.c.

{
  bfd_vma value;
  bfd_vma dot;
  bfd_vma gap;

  /* The address of the thing to be relocated will have moved back by
   the size of the shrink  - but we don't change reloc->address here,
   since we need it to know where the relocation lives in the source
   uncooked section.  */

  /*  reloc->address -= shrink;   conceptual */

  bfd_vma address = reloc->address - shrink;

  switch (reloc->howto->type)
    {
    case R_MOV16B2:
    case R_JMP2:
      shrink+=2;
      break;

      /* Thing is a move one byte.  */
    case R_MOV16B1:
      value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);

      if (value >= 0xff00)
       {
         /* Change the reloc type from 16bit, possible 8 to 8bit
            possible 16.  */
         reloc->howto = reloc->howto + 1;
         /* The place to relc moves back by one.  */
         /* This will be two bytes smaller in the long run.  */
         shrink += 2;
         bfd_perform_slip (abfd, 2, input_section, address);
       }

      break;
      /* This is the 24 bit branch which could become an 8 bitter,
        the relocation points to the first byte of the insn, not the
        actual data.  */

    case R_JMPL1:
      value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);

      dot = input_section->output_section->vma +
       input_section->output_offset + address;

      /* See if the address we're looking at within 127 bytes of where
        we are, if so then we can use a small branch rather than the
        jump we were going to.  */
      gap = value - dot;

      if (-120 < (long) gap && (long) gap < 120)
       {
         /* Change the reloc type from 24bit, possible 8 to 8bit
            possible 32.  */
         reloc->howto = reloc->howto + 1;
         /* This will be two bytes smaller in the long run.  */
         shrink += 2;
         bfd_perform_slip (abfd, 2, input_section, address);
       }
      break;

    case R_JMP1:
      value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);

      dot = input_section->output_section->vma +
       input_section->output_offset + address;

      /* See if the address we're looking at within 127 bytes of where
        we are, if so then we can use a small branch rather than the
        jump we were going to.  */
      gap = value - (dot - shrink);

      if (-120 < (long) gap && (long) gap < 120)
       {
         /* Change the reloc type from 16bit, possible 8 to 8bit
            possible 16.  */
         reloc->howto = reloc->howto + 1;
         /* The place to relc moves back by one.  */

         /* This will be two bytes smaller in the long run.  */
         shrink += 2;
         bfd_perform_slip (abfd, 2, input_section, address);
       }
      break;
    }

  return shrink;
}

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static void w65_reloc16_extra_cases ( bfd abfd,
struct bfd_link_info link_info,
struct bfd_link_order link_order,
arelent reloc,
bfd_byte data,
unsigned int src_ptr,
unsigned int dst_ptr 
) [static]

Definition at line 224 of file coff-w65.c.

{
  unsigned int src_address = *src_ptr;
  unsigned int dst_address = *dst_ptr;
  asection *input_section = link_order->u.indirect.section;

  switch (reloc->howto->type)
    {
    case R_W65_ABS8:
    case R_W65_DP:
      {
       unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
                                                 input_section);
       bfd_put_8 (abfd, gap, data + dst_address);
       dst_address += 1;
       src_address += 1;
      }
      break;

    case R_W65_ABS8S8:
      {
       unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
                                                 input_section);
       gap >>= 8;
       bfd_put_8 (abfd, gap, data + dst_address);
       dst_address += 1;
       src_address += 1;
      }
      break;

    case R_W65_ABS8S16:
      {
       unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
                                                 input_section);
       gap >>= 16;
       bfd_put_8 (abfd, gap, data + dst_address);
       dst_address += 1;
       src_address += 1;
      }
      break;

    case R_W65_ABS16:
      {
       unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
                                                 input_section);

       bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
       dst_address += 2;
       src_address += 2;
      }
      break;
    case R_W65_ABS16S8:
      {
       unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
                                                 input_section);
       gap >>= 8;
       bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
       dst_address += 2;
       src_address += 2;
      }
      break;
    case R_W65_ABS16S16:
      {
       unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
                                                 input_section);
       gap >>= 16;
       bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
       dst_address += 2;
       src_address += 2;
      }
      break;

    case R_W65_ABS24:
      {
       unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
                                                 input_section);
       bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
       bfd_put_8 (abfd, gap >> 16, data+dst_address + 2);
       dst_address += 3;
       src_address += 3;
      }
      break;

    case R_W65_PCR8:
      {
       int gap = bfd_coff_reloc16_get_value (reloc, link_info,
                                         input_section);
       bfd_vma dot = (dst_address
                     + input_section->output_offset
                     + input_section->output_section->vma);

       gap -= dot + 1;
       if (gap < -128 || gap > 127)
         {
           if (! ((*link_info->callbacks->reloc_overflow)
                 (link_info, NULL,
                  bfd_asymbol_name (*reloc->sym_ptr_ptr),
                  reloc->howto->name, reloc->addend, input_section->owner,
                  input_section, reloc->address)))
             abort ();
         }
       bfd_put_8 (abfd, gap, data + dst_address);
       dst_address += 1;
       src_address += 1;
      }
      break;

    case R_W65_PCR16:
      {
       bfd_vma gap = bfd_coff_reloc16_get_value (reloc, link_info,
                                            input_section);
       bfd_vma dot = (dst_address
                     + input_section->output_offset
                     + input_section->output_section->vma);

       /* This wraps within the page, so ignore the relativeness, look at the
          high part.  */
       if ((gap & 0xf0000) != (dot & 0xf0000))
         {
           if (! ((*link_info->callbacks->reloc_overflow)
                 (link_info, NULL,
                  bfd_asymbol_name (*reloc->sym_ptr_ptr),
                  reloc->howto->name, reloc->addend, input_section->owner,
                  input_section, reloc->address)))
             abort ();
         }

       gap -= dot + 2;
       bfd_put_16 (abfd, gap, data + dst_address);
       dst_address += 2;
       src_address += 2;
      }
      break;
    default:
      printf (_("ignoring reloc %s\n"), reloc->howto->name);
      break;

    }
  *src_ptr = src_address;
  *dst_ptr = dst_address;
}

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Variable Documentation

reloc_howto_type howto_table[] [static]
Initial value:
  {
    HOWTO (R_W65_ABS8,    0,  0, 8,  FALSE, 0, complain_overflow_bitfield, 0, "abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
    HOWTO (R_W65_ABS16,   1,  0, 16, FALSE, 0, complain_overflow_bitfield, 0, "abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
    HOWTO (R_W65_ABS24,   0,  2, 32, FALSE, 0, complain_overflow_bitfield, 0, "abs24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
    HOWTO (R_W65_ABS8S8,  0,  0, 8,  FALSE, 0, complain_overflow_bitfield, 0, ">abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
    HOWTO (R_W65_ABS8S16, 0,  0, 8,  FALSE, 0, complain_overflow_bitfield, 0, "^abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
    HOWTO (R_W65_ABS16S8, 1,  0, 16, FALSE, 0, complain_overflow_bitfield, 0, ">abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
    HOWTO (R_W65_ABS16S16,1,  0, 16, FALSE, 0, complain_overflow_bitfield, 0, "^abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
    HOWTO (R_W65_PCR8,    0,  0, 8,  FALSE, 0, complain_overflow_bitfield, 0, "pcrel8", TRUE, 0x000000ff, 0x000000ff, TRUE),
    HOWTO (R_W65_PCR16,   1,  0, 16, FALSE, 0, complain_overflow_bitfield, 0, "pcrel16", TRUE, 0x0000ffff, 0x0000ffff, TRUE),
    HOWTO (R_W65_DP,      0,  0, 8,  FALSE, 0, complain_overflow_bitfield, 0, "dp", TRUE, 0x000000ff, 0x000000ff, FALSE),
  }

Definition at line 37 of file coff-w65.c.