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cell-binutils  2.17cvs20070401
Defines | Functions | Variables
cpu-sh.c File Reference
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "../opcodes/sh-opc.h"

Go to the source code of this file.

Defines

#define SH_NEXT   arch_info_struct + 0
#define SH2_NEXT   arch_info_struct + 1
#define SH2E_NEXT   arch_info_struct + 2
#define SH_DSP_NEXT   arch_info_struct + 3
#define SH3_NEXT   arch_info_struct + 4
#define SH3_NOMMU_NEXT   arch_info_struct + 5
#define SH3_DSP_NEXT   arch_info_struct + 6
#define SH3E_NEXT   arch_info_struct + 7
#define SH4_NEXT   arch_info_struct + 8
#define SH4A_NEXT   arch_info_struct + 9
#define SH4AL_DSP_NEXT   arch_info_struct + 10
#define SH4_NOFPU_NEXT   arch_info_struct + 11
#define SH4_NOMMU_NOFPU_NEXT   arch_info_struct + 12
#define SH4A_NOFPU_NEXT   arch_info_struct + 13
#define SH2A_NEXT   arch_info_struct + 14
#define SH2A_NOFPU_NEXT   arch_info_struct + 15
#define SH2A_NOFPU_OR_SH4_NOMMU_NOFPU_NEXT   arch_info_struct + 16
#define SH2A_NOFPU_OR_SH3_NOMMU_NEXT   arch_info_struct + 17
#define SH2A_OR_SH4_NEXT   arch_info_struct + 18
#define SH2A_OR_SH3E_NEXT   arch_info_struct + 19
#define SH64_NEXT   NULL

Functions

unsigned int sh_get_arch_from_bfd_mach (unsigned long mach)
unsigned int sh_get_arch_up_from_bfd_mach (unsigned long mach)
unsigned long sh_get_bfd_mach_from_arch_set (unsigned int arch_set)
bfd_boolean sh_merge_bfd_arch (bfd *ibfd, bfd *obfd)

Variables

static const bfd_arch_info_type arch_info_struct []
const bfd_arch_info_type bfd_sh_arch
struct {
unsigned long bfd_mach
unsigned long arch
unsigned long arch_up
bfd_to_arch_table []

Define Documentation

#define SH2_NEXT   arch_info_struct + 1

Definition at line 28 of file cpu-sh.c.

#define SH2A_NEXT   arch_info_struct + 14

Definition at line 41 of file cpu-sh.c.

#define SH2A_NOFPU_NEXT   arch_info_struct + 15

Definition at line 42 of file cpu-sh.c.

Definition at line 44 of file cpu-sh.c.

Definition at line 43 of file cpu-sh.c.

Definition at line 46 of file cpu-sh.c.

Definition at line 45 of file cpu-sh.c.

#define SH2E_NEXT   arch_info_struct + 2

Definition at line 29 of file cpu-sh.c.

#define SH3_DSP_NEXT   arch_info_struct + 6

Definition at line 33 of file cpu-sh.c.

#define SH3_NEXT   arch_info_struct + 4

Definition at line 31 of file cpu-sh.c.

#define SH3_NOMMU_NEXT   arch_info_struct + 5

Definition at line 32 of file cpu-sh.c.

#define SH3E_NEXT   arch_info_struct + 7

Definition at line 34 of file cpu-sh.c.

#define SH4_NEXT   arch_info_struct + 8

Definition at line 35 of file cpu-sh.c.

#define SH4_NOFPU_NEXT   arch_info_struct + 11

Definition at line 38 of file cpu-sh.c.

Definition at line 39 of file cpu-sh.c.

#define SH4A_NEXT   arch_info_struct + 9

Definition at line 36 of file cpu-sh.c.

#define SH4A_NOFPU_NEXT   arch_info_struct + 13

Definition at line 40 of file cpu-sh.c.

#define SH4AL_DSP_NEXT   arch_info_struct + 10

Definition at line 37 of file cpu-sh.c.

#define SH64_NEXT   NULL

Definition at line 47 of file cpu-sh.c.

#define SH_DSP_NEXT   arch_info_struct + 3

Definition at line 30 of file cpu-sh.c.

#define SH_NEXT   arch_info_struct + 0

Definition at line 27 of file cpu-sh.c.


Function Documentation

Definition at line 388 of file cpu-sh.c.

{
  int i = 0;

  while (bfd_to_arch_table[i].bfd_mach != 0)
    if (bfd_to_arch_table[i].bfd_mach == mach)
      return bfd_to_arch_table[i].arch;
    else
      i++;

  /* Machine not found.   */
  BFD_FAIL();

  return SH_ARCH_UNKNOWN_ARCH;
}

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Definition at line 410 of file cpu-sh.c.

{
  int i = 0;

  while (bfd_to_arch_table[i].bfd_mach != 0)
    if (bfd_to_arch_table[i].bfd_mach == mach)
      return bfd_to_arch_table[i].arch_up;
    else
      i++;

  /* Machine not found.  */
  BFD_FAIL();

  return SH_ARCH_UNKNOWN_ARCH;
}

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Definition at line 433 of file cpu-sh.c.

{
  unsigned long result = 0;
  unsigned int best = ~arch_set;
  unsigned int co_mask = ~0;
  int i = 0;

  /* If arch_set permits variants with no coprocessor then do not allow
     the other irrelevant co-processor bits to influence the choice:
       e.g. if dsp is disallowed by arch_set, then the algorithm would
       prefer fpu variants over nofpu variants because they also disallow
       dsp - even though the nofpu would be the most correct choice.
     This assumes that EVERY fpu/dsp variant has a no-coprocessor
     counter-part, or their non-fpu/dsp instructions do not have the
     no co-processor bit set.  */
  if (arch_set & arch_sh_no_co)
    co_mask = ~(arch_sh_sp_fpu | arch_sh_dp_fpu | arch_sh_has_dsp);

  while (bfd_to_arch_table[i].bfd_mach != 0)
    {
      unsigned int try = bfd_to_arch_table[i].arch_up & co_mask;

      /* Conceptually: Find the architecture with the least number
        of extra features or, if they have the same number, then
        the greatest number of required features.  Disregard
         architectures where the required features alone do
        not describe a valid architecture.  */
      if (((try & ~arch_set) < (best & ~arch_set)
          || ((try & ~arch_set) == (best & ~arch_set)
              && (~try & arch_set) < (~best & arch_set)))
         && SH_MERGE_ARCH_SET_VALID (try, arch_set))
       {
         result = bfd_to_arch_table[i].bfd_mach;
         best = try;
       }

      i++;
    }

  /* This might happen if a new variant is added to sh-opc.h
     but no corresponding entry is added to the table above.  */
  BFD_ASSERT (result != 0);

  return result;
}

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bfd_boolean sh_merge_bfd_arch ( bfd ibfd,
bfd obfd 
)

Definition at line 488 of file cpu-sh.c.

{
  unsigned int old_arch, new_arch, merged_arch;

  if (! _bfd_generic_verify_endian_match (ibfd, obfd))
    return FALSE;

  old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd));
  new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd));

  merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch);

  if (!SH_VALID_CO_ARCH_SET (merged_arch))
    {
      (*_bfd_error_handler)
       ("%B: uses %s instructions while previous modules use %s instructions",
        ibfd,
        SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point",
        SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp");
      bfd_set_error (bfd_error_bad_value);
      return FALSE;
    }
  else if (!SH_VALID_ARCH_SET (merged_arch))
    {
      (*_bfd_error_handler)
       ("internal error: merge of architecture '%s' with architecture '%s' produced unknown architecture\n",
        bfd_printable_name (obfd),
        bfd_printable_name (ibfd));
      bfd_set_error (bfd_error_bad_value);
      return FALSE;
    }

  bfd_default_set_arch_mach (obfd, bfd_arch_sh,
                          sh_get_bfd_mach_from_arch_set (merged_arch));
  
  return TRUE;
}

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Variable Documentation

Definition at line 49 of file cpu-sh.c.

Initial value:

Definition at line 333 of file cpu-sh.c.

struct { ... } bfd_to_arch_table[] [static]