Back to index

cell-binutils  2.17cvs20070401
Defines | Functions | Variables
aout-arm.c File Reference
#include "bfd.h"
#include "sysdep.h"
#include "libaout.h"
#include "aout/aout64.h"
#include "aoutx.h"
#include "aout-target.h"

Go to the source code of this file.

Defines

#define NAME(x, y)   CONCAT3 (aoutarm,_32_,y)
#define N_TXTADDR(x)
#define TEXT_START_ADDR   0x8000
#define TARGET_PAGE_SIZE   0x8000
#define SEGMENT_SIZE   TARGET_PAGE_SIZE
#define DEFAULT_ARCH   bfd_arch_arm
#define MY(OP)   CONCAT2 (aoutarm_,OP)
#define N_BADMAG(x)
#define N_MAGIC(x)   ((x).a_info & ~07200)
#define MY_bfd_reloc_type_lookup   aoutarm_bfd_reloc_type_lookup
#define MY_bfd_reloc_name_lookup   aoutarm_bfd_reloc_name_lookup
#define RELOC_ARM_BITS_NEG_BIG   ((unsigned int) 0x08)
#define RELOC_ARM_BITS_NEG_LITTLE   ((unsigned int) 0x10)
#define MY_reloc_howto(BFD, REL, IN, EX, PC)   MY (reloc_howto) (BFD, REL, &IN, &EX, &PC)
#define MY_put_reloc(BFD, EXT, IDX, VAL, HOWTO, RELOC)   MY (put_reloc) (BFD, EXT, IDX, VAL, HOWTO, RELOC)
#define MY_relocatable_reloc(HOW, BFD, REL, AMOUNT, ADDR)   MY (relocatable_reloc) (HOW, BFD, REL, &(AMOUNT), ADDR)
#define ASTD(i, j)   case i: return & MY (howto_table)[j]
#define MY_swap_std_reloc_in   MY (swap_std_reloc_in)
#define MY_swap_std_reloc_out   MY (swap_std_reloc_out)
#define MY_get_section_contents   _bfd_generic_get_section_contents
#define MY_BFD_TARGET

Functions

static bfd_reloc_status_type MY() fix_pcrel_26 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **)
static bfd_reloc_status_type MY() fix_pcrel_26_done (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **)
reloc_howto_type MY (howto_table)[]
static reloc_howto_type *MY() reloc_howto (bfd *abfd, struct reloc_std_external *rel, int *r_index, int *r_extern, int *r_pcrel)
static void MY() put_reloc (bfd *abfd, int r_extern, int r_index, bfd_vma value, reloc_howto_type *howto, struct reloc_std_external *reloc)
static void MY() relocatable_reloc (reloc_howto_type *howto, bfd *abfd, struct reloc_std_external *reloc, bfd_vma *amount, bfd_vma r_addr)
static bfd_reloc_status_type MY() fix_pcrel_26_done (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry ATTRIBUTE_UNUSED, asymbol *symbol ATTRIBUTE_UNUSED, void *data ATTRIBUTE_UNUSED, asection *input_section ATTRIBUTE_UNUSED, bfd *output_bfd ATTRIBUTE_UNUSED, char **error_message ATTRIBUTE_UNUSED)
static bfd_reloc_status_type MY() fix_pcrel_26 (bfd *abfd, arelent *reloc_entry, asymbol *symbol, void *data, asection *input_section, bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
static reloc_howto_type *MY() bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
static reloc_howto_type *MY() bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
void MY_swap_std_reloc_in (bfd *, struct reloc_std_external *, arelent *, asymbol **, bfd_size_type)
void MY_swap_std_reloc_out (bfd *, arelent *, struct reloc_std_external *)
void MY_swap_std_reloc_in (bfd *abfd, struct reloc_std_external *bytes, arelent *cache_ptr, asymbol **symbols, bfd_size_type symcount ATTRIBUTE_UNUSED)

Variables

const bfd_target aout_arm_big_vec
const bfd_target aout_arm_little_vec

Define Documentation

#define ASTD (   i,
  j 
)    case i: return & MY (howto_table)[j]
#define DEFAULT_ARCH   bfd_arch_arm

Definition at line 44 of file aout-arm.c.

#define MY (   OP)    CONCAT2 (aoutarm_,OP)

Definition at line 46 of file aout-arm.c.

#define MY_bfd_reloc_name_lookup   aoutarm_bfd_reloc_name_lookup

Definition at line 53 of file aout-arm.c.

#define MY_bfd_reloc_type_lookup   aoutarm_bfd_reloc_type_lookup

Definition at line 52 of file aout-arm.c.

#define MY_BFD_TARGET

Definition at line 461 of file aout-arm.c.

Definition at line 339 of file aout-arm.c.

#define MY_put_reloc (   BFD,
  EXT,
  IDX,
  VAL,
  HOWTO,
  RELOC 
)    MY (put_reloc) (BFD, EXT, IDX, VAL, HOWTO, RELOC)

Definition at line 187 of file aout-arm.c.

#define MY_reloc_howto (   BFD,
  REL,
  IN,
  EX,
  PC 
)    MY (reloc_howto) (BFD, REL, &IN, &EX, &PC)

Definition at line 137 of file aout-arm.c.

#define MY_relocatable_reloc (   HOW,
  BFD,
  REL,
  AMOUNT,
  ADDR 
)    MY (relocatable_reloc) (HOW, BFD, REL, &(AMOUNT), ADDR)

Definition at line 219 of file aout-arm.c.

Definition at line 337 of file aout-arm.c.

#define MY_swap_std_reloc_out   MY (swap_std_reloc_out)

Definition at line 338 of file aout-arm.c.

#define N_BADMAG (   x)
Value:
((((x).a_info & ~007200) != ZMAGIC) && \
                     (((x).a_info & ~006000) != OMAGIC) && \
                     ((x).a_info != NMAGIC))

Definition at line 47 of file aout-arm.c.

#define N_MAGIC (   x)    ((x).a_info & ~07200)

Definition at line 50 of file aout-arm.c.

#define N_TXTADDR (   x)
Value:
((N_MAGIC (x) == NMAGIC)                                \
   ? (bfd_vma) 0x8000                                          \
   : ((N_MAGIC (x) != ZMAGIC)                                  \
      ? (bfd_vma) 0                                     \
      : ((N_SHARED_LIB (x))                             \
        ? ((x).a_entry & ~(bfd_vma) (TARGET_PAGE_SIZE - 1))    \
        : (bfd_vma) TEXT_START_ADDR)))

Definition at line 32 of file aout-arm.c.

#define NAME (   x,
  y 
)    CONCAT3 (aoutarm,_32_,y)

Definition at line 30 of file aout-arm.c.

#define RELOC_ARM_BITS_NEG_BIG   ((unsigned int) 0x08)

Definition at line 92 of file aout-arm.c.

#define RELOC_ARM_BITS_NEG_LITTLE   ((unsigned int) 0x10)

Definition at line 93 of file aout-arm.c.

Definition at line 43 of file aout-arm.c.

#define TARGET_PAGE_SIZE   0x8000

Definition at line 42 of file aout-arm.c.

#define TEXT_START_ADDR   0x8000

Definition at line 41 of file aout-arm.c.


Function Documentation

static reloc_howto_type* MY() bfd_reloc_name_lookup ( bfd *abfd  ATTRIBUTE_UNUSED,
const char *  r_name 
) [static]

Definition at line 322 of file aout-arm.c.

{
  unsigned int i;

  for (i = 0;
       i < sizeof (MY (howto_table)) / sizeof (MY (howto_table)[0]);
       i++)
    if (MY (howto_table)[i].name != NULL
       && strcasecmp (MY (howto_table)[i].name, r_name) == 0)
      return &MY (howto_table)[i];

  return NULL;
}

Here is the call graph for this function:

Here is the caller graph for this function:

static reloc_howto_type* MY() bfd_reloc_type_lookup ( bfd abfd,
bfd_reloc_code_real_type  code 
) [static]

Definition at line 293 of file aout-arm.c.

{
#define ASTD(i,j)       case i: return & MY (howto_table)[j]

  if (code == BFD_RELOC_CTOR)
    switch (bfd_get_arch_info (abfd)->bits_per_address)
      {
      case 32:
        code = BFD_RELOC_32;
        break;
      default:
       return NULL;
      }

  switch (code)
    {
      ASTD (BFD_RELOC_16, 1);
      ASTD (BFD_RELOC_32, 2);
      ASTD (BFD_RELOC_ARM_PCREL_BRANCH, 3);
      ASTD (BFD_RELOC_8_PCREL, 4);
      ASTD (BFD_RELOC_16_PCREL, 5);
      ASTD (BFD_RELOC_32_PCREL, 6);
    default:
      return NULL;
    }
}

Here is the call graph for this function:

static bfd_reloc_status_type MY() fix_pcrel_26 ( bfd ,
arelent ,
asymbol ,
void *  ,
asection ,
bfd ,
char **   
) [static]
static bfd_reloc_status_type MY() fix_pcrel_26 ( bfd abfd,
arelent reloc_entry,
asymbol symbol,
void *  data,
asection input_section,
bfd output_bfd,
char **error_message  ATTRIBUTE_UNUSED 
) [static]

Definition at line 236 of file aout-arm.c.

{
  bfd_vma relocation;
  bfd_size_type addr = reloc_entry->address;
  bfd_vma target = bfd_get_32 (abfd, (bfd_byte *) data + addr);
  bfd_reloc_status_type flag = bfd_reloc_ok;

  /* If this is an undefined symbol, return error.  */
  if (symbol->section == &bfd_und_section
      && (symbol->flags & BSF_WEAK) == 0)
    return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined;

  /* If the sections are different, and we are doing a partial relocation,
     just ignore it for now.  */
  if (symbol->section->name != input_section->name
      && output_bfd != NULL)
    return bfd_reloc_ok;

  relocation = (target & 0x00ffffff) << 2;
  relocation = (relocation ^ 0x02000000) - 0x02000000; /* Sign extend.  */
  relocation += symbol->value;
  relocation += symbol->section->output_section->vma;
  relocation += symbol->section->output_offset;
  relocation += reloc_entry->addend;
  relocation -= input_section->output_section->vma;
  relocation -= input_section->output_offset;
  relocation -= addr;
  if (relocation & 3)
    return bfd_reloc_overflow;

  /* Check for overflow.  */
  if (relocation & 0x02000000)
    {
      if ((relocation & ~ (bfd_vma) 0x03ffffff) != ~ (bfd_vma) 0x03ffffff)
       flag = bfd_reloc_overflow;
    }
  else if (relocation & ~ (bfd_vma) 0x03ffffff)
    flag = bfd_reloc_overflow;

  target &= ~ (bfd_vma) 0x00ffffff;
  target |= (relocation >> 2) & 0x00ffffff;
  bfd_put_32 (abfd, target, (bfd_byte *) data + addr);

  /* Now the ARM magic... Change the reloc type so that it is marked as done.
     Strictly this is only necessary if we are doing a partial relocation.  */
  reloc_entry->howto = &MY (howto_table)[7];

  return flag;
}
static bfd_reloc_status_type MY() fix_pcrel_26_done ( bfd ,
arelent ,
asymbol ,
void *  ,
asection ,
bfd ,
char **   
) [static]
static bfd_reloc_status_type MY() fix_pcrel_26_done ( bfd *abfd  ATTRIBUTE_UNUSED,
arelent *reloc_entry  ATTRIBUTE_UNUSED,
asymbol *symbol  ATTRIBUTE_UNUSED,
void *data  ATTRIBUTE_UNUSED,
asection *input_section  ATTRIBUTE_UNUSED,
bfd *output_bfd  ATTRIBUTE_UNUSED,
char **error_message  ATTRIBUTE_UNUSED 
) [static]

Definition at line 223 of file aout-arm.c.

{
  /* This is dead simple at present.  */
  return bfd_reloc_ok;
}
reloc_howto_type MY ( howto_table  )
void MY_swap_std_reloc_in ( bfd abfd,
struct reloc_std_external bytes,
arelent cache_ptr,
asymbol **  symbols,
bfd_size_type symcount  ATTRIBUTE_UNUSED 
)

Definition at line 347 of file aout-arm.c.

{
  int r_index;
  int r_extern;
  int r_pcrel;
  struct aoutdata *su = &(abfd->tdata.aout_data->a);

  cache_ptr->address = H_GET_32 (abfd, bytes->r_address);

  cache_ptr->howto = MY_reloc_howto (abfd, bytes, r_index, r_extern, r_pcrel);

  MOVE_ADDRESS (0);
}
static void MY_swap_std_reloc_out ( bfd abfd,
arelent g,
struct reloc_std_external natptr 
)

Definition at line 366 of file aout-arm.c.

{
  int r_index;
  asymbol *sym = *(g->sym_ptr_ptr);
  int r_extern;
  int r_length;
  int r_pcrel;
  int r_neg = 0;     /* Negative relocs use the BASEREL bit.  */
  asection *output_section = sym->section->output_section;

  PUT_WORD (abfd, g->address, natptr->r_address);

  r_length = g->howto->size ;   /* Size as a power of two.  */
  if (r_length < 0)
    {
      r_length = -r_length;
      r_neg = 1;
    }

  r_pcrel  = (int) g->howto->pc_relative; /* Relative to PC?  */

  /* For RISC iX, in pc-relative relocs the r_pcrel bit means that the
     relocation has been done already (Only for the 26-bit one I think).  */
  if (g->howto->type == 3)
    {
      r_length = 3;
      r_pcrel = 0;
    }
  else if (g->howto->type == 7)
    {
      r_length = 3;
      r_pcrel = 1;
    }

  /* Name was clobbered by aout_write_syms to be symbol index.  */

  /* If this relocation is relative to a symbol then set the
     r_index to the symbols index, and the r_extern bit.

     Absolute symbols can come in in two ways, either as an offset
     from the abs section, or as a symbol which has an abs value.
     check for that here.  */

  if (bfd_is_com_section (output_section)
      || output_section == &bfd_abs_section
      || output_section == &bfd_und_section)
    {
      if (bfd_abs_section.symbol == sym)
       {
         /* Whoops, looked like an abs symbol, but is really an offset
            from the abs section.  */
         r_index = 0;
         r_extern = 0;
       }
      else
       {
         /* Fill in symbol.  */
         r_extern = 1;
         r_index = (*(g->sym_ptr_ptr))->KEEPIT;
       }
    }
  else
    {
      /* Just an ordinary section.  */
      r_extern = 0;
      r_index  = output_section->target_index;
    }

  /* Now the fun stuff.  */
  if (bfd_header_big_endian (abfd))
    {
      natptr->r_index[0] = r_index >> 16;
      natptr->r_index[1] = r_index >> 8;
      natptr->r_index[2] = r_index;
      natptr->r_type[0] =
       (  (r_extern ?   RELOC_STD_BITS_EXTERN_BIG: 0)
        | (r_pcrel  ?   RELOC_STD_BITS_PCREL_BIG: 0)
        | (r_neg    ?   RELOC_ARM_BITS_NEG_BIG: 0)
        | (r_length <<  RELOC_STD_BITS_LENGTH_SH_BIG));
    }
  else
    {
      natptr->r_index[2] = r_index >> 16;
      natptr->r_index[1] = r_index >> 8;
      natptr->r_index[0] = r_index;
      natptr->r_type[0] =
       (  (r_extern ?   RELOC_STD_BITS_EXTERN_LITTLE: 0)
        | (r_pcrel  ?   RELOC_STD_BITS_PCREL_LITTLE: 0)
        | (r_neg    ?   RELOC_ARM_BITS_NEG_LITTLE: 0)
        | (r_length <<  RELOC_STD_BITS_LENGTH_SH_LITTLE));
    }
}
static void MY() put_reloc ( bfd abfd,
int  r_extern,
int  r_index,
bfd_vma  value,
reloc_howto_type *  howto,
struct reloc_std_external reloc 
) [static]

Definition at line 141 of file aout-arm.c.

{
  unsigned int r_length;
  int r_pcrel;
  int r_neg;

  PUT_WORD (abfd, value, reloc->r_address);
  /* Size as a power of two.  */
  r_length = howto->size;

  /* Special case for branch relocations.  */
  if (howto->type == 3 || howto->type == 7)
    r_length = 3;

  r_pcrel  = howto->type & 4;      /* PC Relative done?  */
  r_neg = howto->type & 8;  /* Negative relocation.  */

  if (bfd_header_big_endian (abfd))
    {
      reloc->r_index[0] = r_index >> 16;
      reloc->r_index[1] = r_index >> 8;
      reloc->r_index[2] = r_index;
      reloc->r_type[0] =
       ((r_extern ?     RELOC_STD_BITS_EXTERN_BIG : 0)
        | (r_pcrel ?    RELOC_STD_BITS_PCREL_BIG : 0)
        | (r_neg ?    RELOC_ARM_BITS_NEG_BIG : 0)
        | (r_length <<  RELOC_STD_BITS_LENGTH_SH_BIG));
    }
  else
    {
      reloc->r_index[2] = r_index >> 16;
      reloc->r_index[1] = r_index >> 8;
      reloc->r_index[0] = r_index;
      reloc->r_type[0] =
       ((r_extern ?     RELOC_STD_BITS_EXTERN_LITTLE : 0)
        | (r_pcrel ?    RELOC_STD_BITS_PCREL_LITTLE : 0)
        | (r_neg ?    RELOC_ARM_BITS_NEG_LITTLE : 0)
        | (r_length <<  RELOC_STD_BITS_LENGTH_SH_LITTLE));
    }
}
static reloc_howto_type* MY() reloc_howto ( bfd abfd,
struct reloc_std_external rel,
int r_index,
int r_extern,
int r_pcrel 
) [static]

Definition at line 96 of file aout-arm.c.

{
  unsigned int r_length;
  unsigned int r_pcrel_done;
  unsigned int r_neg;
  int index;

  *r_pcrel = 0;
  if (bfd_header_big_endian (abfd))
    {
      *r_index     =  ((rel->r_index[0] << 16)
                     | (rel->r_index[1] << 8)
                     | rel->r_index[2]);
      *r_extern    = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
      r_pcrel_done = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
      r_neg      = (0 != (rel->r_type[0] & RELOC_ARM_BITS_NEG_BIG));
      r_length     = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
                    >> RELOC_STD_BITS_LENGTH_SH_BIG);
    }
  else
    {
      *r_index     = ((rel->r_index[2] << 16)
                    | (rel->r_index[1] << 8)
                    | rel->r_index[0]);
      *r_extern    = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
      r_pcrel_done = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
      r_neg      = (0 != (rel->r_type[0] & RELOC_ARM_BITS_NEG_LITTLE));
      r_length     = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
                    >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
    }
  index = r_length + 4 * r_pcrel_done + 8 * r_neg;
  if (index == 3)
    *r_pcrel = 1;

  return MY (howto_table) + index;
}

Here is the caller graph for this function:

static void MY() relocatable_reloc ( reloc_howto_type *  howto,
bfd abfd,
struct reloc_std_external reloc,
bfd_vma amount,
bfd_vma  r_addr 
) [static]

Definition at line 191 of file aout-arm.c.

{
  if (howto->type == 3)
    {
      if (reloc->r_type[0]
         & (bfd_header_big_endian (abfd)
            ? RELOC_STD_BITS_EXTERN_BIG : RELOC_STD_BITS_EXTERN_LITTLE))
       /* The reloc is still external, so don't modify anything.  */
       *amount = 0;
      else
       {
         *amount -= r_addr;
         /* Change the r_pcrel value -- on the ARM, this bit is set once the
            relocation is done.  */
         if (bfd_header_big_endian (abfd))
           reloc->r_type[0] |= RELOC_STD_BITS_PCREL_BIG;
         else
           reloc->r_type[0] |= RELOC_STD_BITS_PCREL_LITTLE;
       }
    }
  else if (howto->type == 7)
    *amount = 0;
}

Variable Documentation

Definition at line 508 of file aout-arm.c.

Definition at line 467 of file aout-arm.c.