Back to index

cell-binutils  2.17cvs20070401
Classes | Defines | Functions | Variables
elf32-d30v.c File Reference
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/d30v.h"
#include "elf32-target.h"

Go to the source code of this file.

Classes

struct  d30v_reloc_map

Defines

#define MAX32   ((bfd_signed_vma) 0x7fffffff)
#define MIN32   (- MAX32 - 1)
#define ELF_ARCH   bfd_arch_d30v
#define ELF_MACHINE_CODE   EM_D30V
#define ELF_MACHINE_ALT1   EM_CYGNUS_D30V
#define ELF_MAXPAGESIZE   0x1000
#define TARGET_BIG_SYM   bfd_elf32_d30v_vec
#define TARGET_BIG_NAME   "elf32-d30v"
#define elf_info_to_howto   d30v_info_to_howto_rela
#define elf_info_to_howto_rel   d30v_info_to_howto_rel
#define elf_backend_object_p   0
#define elf_backend_final_write_processing   0

Functions

static bfd_reloc_status_type bfd_elf_d30v_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, void *data, asection *input_section, bfd *output_bfd, char **error_message)
static bfd_reloc_status_type bfd_elf_d30v_reloc_21 (bfd *abfd, arelent *reloc_entry, asymbol *symbol, void *data, asection *input_section, bfd *output_bfd, char **error_message)
static reloc_howto_type * bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code)
static reloc_howto_type * bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
static void d30v_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, Elf_Internal_Rela *dst)
static void d30v_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, Elf_Internal_Rela *dst)

Variables

static reloc_howto_type elf_d30v_howto_table []
static struct d30v_reloc_map []

Class Documentation

struct d30v_reloc_map

Definition at line 454 of file elf32-d30v.c.

Class Members
bfd_reloc_code_real_type bfd_reloc_val
unsigned char elf_reloc_val

Define Documentation

#define ELF_ARCH   bfd_arch_d30v

Definition at line 538 of file elf32-d30v.c.

Definition at line 549 of file elf32-d30v.c.

#define elf_backend_object_p   0

Definition at line 548 of file elf32-d30v.c.

Definition at line 546 of file elf32-d30v.c.

Definition at line 547 of file elf32-d30v.c.

Definition at line 540 of file elf32-d30v.c.

#define ELF_MACHINE_CODE   EM_D30V

Definition at line 539 of file elf32-d30v.c.

#define ELF_MAXPAGESIZE   0x1000

Definition at line 541 of file elf32-d30v.c.

#define MAX32   ((bfd_signed_vma) 0x7fffffff)

Definition at line 29 of file elf32-d30v.c.

#define MIN32   (- MAX32 - 1)

Definition at line 30 of file elf32-d30v.c.

#define TARGET_BIG_NAME   "elf32-d30v"

Definition at line 544 of file elf32-d30v.c.

Definition at line 543 of file elf32-d30v.c.


Function Documentation

static reloc_howto_type* bfd_elf32_bfd_reloc_name_lookup ( bfd *abfd  ATTRIBUTE_UNUSED,
const char *  r_name 
) [static]

Definition at line 495 of file elf32-d30v.c.

{
  unsigned int i;

  for (i = 0;
       i < sizeof (elf_d30v_howto_table) / sizeof (elf_d30v_howto_table[0]);
       i++)
    if (elf_d30v_howto_table[i].name != NULL
       && strcasecmp (elf_d30v_howto_table[i].name, r_name) == 0)
      return &elf_d30v_howto_table[i];

  return NULL;
}

Here is the call graph for this function:

static reloc_howto_type* bfd_elf32_bfd_reloc_type_lookup ( bfd *abfd  ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type  code 
) [static]

Definition at line 478 of file elf32-d30v.c.

{
  unsigned int i;

  for (i = 0;
       i < sizeof (d30v_reloc_map) / sizeof (struct d30v_reloc_map);
       i++)
    {
      if (d30v_reloc_map[i].bfd_reloc_val == code)
       return &elf_d30v_howto_table[d30v_reloc_map[i].elf_reloc_val];
    }

  return NULL;
}
static bfd_reloc_status_type bfd_elf_d30v_reloc ( bfd abfd,
arelent reloc_entry,
asymbol symbol,
void *  data,
asection input_section,
bfd output_bfd,
char **  error_message 
) [static]

Definition at line 33 of file elf32-d30v.c.

{
  bfd_signed_vma relocation;
  bfd_vma in1, in2, num;
  bfd_vma tmp_addr = 0;
  bfd_reloc_status_type r;
  asection *reloc_target_output_section;
  bfd_size_type addr = reloc_entry->address;
  bfd_reloc_status_type flag = bfd_reloc_ok;
  bfd_vma output_base = 0;
  reloc_howto_type *howto = reloc_entry->howto;
  int make_absolute = 0;

  if (output_bfd != NULL)
    {
      /* Partial linking -- do nothing.  */
      reloc_entry->address += input_section->output_offset;
      return bfd_reloc_ok;
    }

  r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
                             input_section, output_bfd, error_message);
  if (r != bfd_reloc_continue)
    return r;

  /* A hacked-up version of bfd_perform_reloc() follows.  */
 if (bfd_is_und_section (symbol->section)
      && (symbol->flags & BSF_WEAK) == 0
      && output_bfd == NULL)
    flag = bfd_reloc_undefined;

  /* Is the address of the relocation really within the section?  */
  if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
    return bfd_reloc_outofrange;

  /* Work out which section the relocation is targeted at and the
     initial relocation command value.  */

  /* Get symbol value.  (Common symbols are special.)  */
  if (bfd_is_com_section (symbol->section))
    relocation = 0;
  else
    relocation = symbol->value;

  reloc_target_output_section = symbol->section->output_section;

  /* Convert input-section-relative symbol value to absolute.  */
  output_base = reloc_target_output_section->vma;
  relocation += output_base + symbol->section->output_offset;

  /* Add in supplied addend.  */
  relocation += reloc_entry->addend;

  /* Here the variable relocation holds the final address of the
     symbol we are relocating against, plus any addend.  */
  if (howto->pc_relative)
    {
      tmp_addr = input_section->output_section->vma
       + input_section->output_offset
       + reloc_entry->address;
      relocation -= tmp_addr;
    }

  in1 = bfd_get_32 (abfd, (bfd_byte *) data + addr);
  in2 = bfd_get_32 (abfd, (bfd_byte *) data + addr + 4);

  /* Extract the addend.  */
  num = ((in2 & 0x3FFFF)
        | ((in2 & 0xFF00000) >> 2)
        | ((in1 & 0x3F) << 26));
  in1 &= 0xFFFFFFC0;
  in2 = 0x80000000;

  relocation += num;

  if (howto->pc_relative && howto->bitsize == 32)
    {
      /* The D30V has a PC that doesn't wrap and PC-relative jumps are
        signed, so a PC-relative jump can't be more than +/- 2^31 bytes.
        If one exceeds this, change it to an absolute jump.  */
      if (relocation > MAX32 || relocation < MIN32)
       {
         relocation = (relocation + tmp_addr) & 0xffffffff;
         make_absolute = 1;
       }
    }

  in1 |= (relocation >> 26) & 0x3F;              /* Top 6 bits.  */
  in2 |= ((relocation & 0x03FC0000) << 2);       /* Next 8 bits.  */
  in2 |= relocation & 0x0003FFFF;         /* Bottom 18 bits.  */

  /* Change a PC-relative instruction to its
     absolute equivalent with this simple hack.  */
  if (make_absolute)
    in1 |= 0x00100000;

  bfd_put_32 (abfd, in1, (bfd_byte *) data + addr);
  bfd_put_32 (abfd, in2, (bfd_byte *) data + addr + 4);

  return flag;
}

Here is the call graph for this function:

static bfd_reloc_status_type bfd_elf_d30v_reloc_21 ( bfd abfd,
arelent reloc_entry,
asymbol symbol,
void *  data,
asection input_section,
bfd output_bfd,
char **  error_message 
) [static]

Definition at line 142 of file elf32-d30v.c.

{
  bfd_vma relocation;
  bfd_vma in1, num;
  bfd_reloc_status_type r;
  asection *reloc_target_output_section;
  bfd_size_type addr = reloc_entry->address;
  bfd_reloc_status_type flag = bfd_reloc_ok;
  bfd_vma output_base = 0;
  reloc_howto_type *howto = reloc_entry->howto;
  int mask, max;

  if (output_bfd != NULL)
    {
      /* Partial linking -- do nothing.  */
      reloc_entry->address += input_section->output_offset;
      return bfd_reloc_ok;
    }

  r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
                             input_section, output_bfd, error_message);
  if (r != bfd_reloc_continue)
    return r;

  /* A hacked-up version of bfd_perform_reloc() follows.  */
  if (bfd_is_und_section (symbol->section)
      && (symbol->flags & BSF_WEAK) == 0
      && output_bfd == NULL)
    flag = bfd_reloc_undefined;

  /* Is the address of the relocation really within the section?  */
  if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
    return bfd_reloc_outofrange;

  /* Work out which section the relocation is targeted at and the
     initial relocation command value.  */

  /* Get symbol value.  (Common symbols are special.)  */
  if (bfd_is_com_section (symbol->section))
    relocation = 0;
  else
    relocation = symbol->value;

  reloc_target_output_section = symbol->section->output_section;

  /* Convert input-section-relative symbol value to absolute.  */
  output_base = reloc_target_output_section->vma;
  relocation += output_base + symbol->section->output_offset;

  /* Add in supplied addend.  */
  relocation += reloc_entry->addend;

  /* Here the variable relocation holds the final address of the
     symbol we are relocating against, plus any addend.  */

  if (howto->pc_relative)
    {
      relocation -= (input_section->output_section->vma
                   + input_section->output_offset);
      if (howto->pcrel_offset)
       relocation -= reloc_entry->address;
    }

  in1 = bfd_get_32 (abfd, (bfd_byte *) data + addr);

  mask =  (1 << howto->bitsize) - 1;
  if (howto->bitsize == 6)
    mask <<= 12;
  max = (1 << (howto->bitsize + 2)) - 1;

  /* Extract the addend.  */
  num = in1 & mask;  /* 18 bits.  */
  if (howto->bitsize == 6)
    num >>= 12;
  num <<= 3; /* shift left 3.  */
  in1 &= ~mask;  /* Mask out addend.  */

  relocation += num;
  if (howto->type == R_D30V_21_PCREL_R
      || howto->type == R_D30V_15_PCREL_R
      || howto->type == R_D30V_9_PCREL_R)
    relocation += 4;

  if ((int) relocation < 0)
    {
      if (~ (int) relocation > max)
       flag = bfd_reloc_overflow;
    }
  else
    {
      if ((int) relocation > max)
       flag = bfd_reloc_overflow;
    }

  relocation >>= 3;
  if (howto->bitsize == 6)
    in1 |= ((relocation & (mask >> 12)) << 12);
  else
    in1 |= relocation & mask;

  bfd_put_32 (abfd, in1, (bfd_byte *) data + addr);

  return flag;
}

Here is the call graph for this function:

static void d30v_info_to_howto_rel ( bfd *abfd  ATTRIBUTE_UNUSED,
arelent cache_ptr,
Elf_Internal_Rela dst 
) [static]

Definition at line 513 of file elf32-d30v.c.

{
  unsigned int r_type;

  r_type = ELF32_R_TYPE (dst->r_info);
  BFD_ASSERT (r_type < (unsigned int) R_D30V_max);
  cache_ptr->howto = &elf_d30v_howto_table[r_type];
}
static void d30v_info_to_howto_rela ( bfd *abfd  ATTRIBUTE_UNUSED,
arelent cache_ptr,
Elf_Internal_Rela dst 
) [static]

Definition at line 527 of file elf32-d30v.c.

{
  unsigned int r_type;

  r_type = ELF32_R_TYPE (dst->r_info);
  BFD_ASSERT (r_type < (unsigned int) R_D30V_max);
  cache_ptr->howto = &elf_d30v_howto_table[r_type];
}

Variable Documentation

struct d30v_reloc_map[] [static]
Initial value:
{
  { BFD_RELOC_NONE, R_D30V_NONE, },
  { BFD_RELOC_D30V_6, R_D30V_6 },
  { BFD_RELOC_D30V_9_PCREL, R_D30V_9_PCREL },
  { BFD_RELOC_D30V_9_PCREL_R, R_D30V_9_PCREL_R },
  { BFD_RELOC_D30V_15, R_D30V_15 },
  { BFD_RELOC_D30V_15_PCREL, R_D30V_15_PCREL },
  { BFD_RELOC_D30V_15_PCREL_R, R_D30V_15_PCREL_R },
  { BFD_RELOC_D30V_21, R_D30V_21 },
  { BFD_RELOC_D30V_21_PCREL, R_D30V_21_PCREL },
  { BFD_RELOC_D30V_21_PCREL_R, R_D30V_21_PCREL_R },
  { BFD_RELOC_D30V_32, R_D30V_32 },
  { BFD_RELOC_D30V_32_PCREL, R_D30V_32_PCREL },
  { BFD_RELOC_32, R_D30V_32_NORMAL },
}

Definition at line 460 of file elf32-d30v.c.

reloc_howto_type elf_d30v_howto_table[] [static]

Definition at line 253 of file elf32-d30v.c.