Fix for PR1654 - implement "movstrsi" pattern to copy simple blocks of memory.

[official-gcc.git] / gcc / mips-tdump.c

/* Read and manage MIPS symbol tables from object modules.
   Copyright (C) 1991, 1994, 1995, 1997 Free Software Foundation, Inc.
   Contributed by hartzell@boulder.colorado.edu,
   Rewritten by meissner@osf.org.

This file is part of GNU CC.

GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#include "config.h"
#include "system.h"

#ifdef index
#undef index
#undef rindex
#endif
#ifndef CROSS_COMPILE
#include <a.out.h>
#else
#include "mips/a.out.h"
#endif /* CROSS_COMPILE */

#ifndef MIPS_IS_STAB
/* Macros for mips-tfile.c to encapsulate stabs in ECOFF, and for
   and mips-tdump.c to print them out.  This is used on the Alpha,
   which does not include mips.h.

   These must match the corresponding definitions in gdb/mipsread.c.
   Unfortunately, gcc and gdb do not currently share any directories.  */

#define CODE_MASK 0x8F300
#define MIPS_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK)
#define MIPS_MARK_STAB(code) ((code)+CODE_MASK)
#define MIPS_UNMARK_STAB(code) ((code)-CODE_MASK)
#endif

#ifdef __STDC__
typedef void *PTR_T;
typedef const void *CPTR_T;
#define __proto(x) x
#else

#if defined(_STDIO_H_) || defined(__STDIO_H__)          /* Ultrix 4.0, SGI */
typedef void *PTR_T;
typedef void *CPTR_T;

#else
typedef char *PTR_T;                                    /* Ultrix 3.1 */
typedef char *CPTR_T;
#endif

#define __proto(x) ()
#define const
#endif

#define uchar   unsigned char
#define ushort  unsigned short
#define uint    unsigned int
#define ulong   unsigned long


/* Do to size_t being defined in sys/types.h and different
   in stddef.h, we have to do this by hand.....  Note, these
   types are correct for MIPS based systems, and may not be
   correct for other systems.  */

#define size_t          uint
#define ptrdiff_t       int

\f
/* Redefinition of storage classes as an enumeration for better
   debugging.  */

#ifndef stStaParam
#define stStaParam      16      /* Fortran static parameters */
#endif

#ifndef btVoid
#define btVoid          26      /* void basic type */
#endif

typedef enum sc {
  sc_Nil         = scNil,         /* no storage class */
  sc_Text        = scText,        /* text symbol */
  sc_Data        = scData,        /* initialized data symbol */
  sc_Bss         = scBss,         /* un-initialized data symbol */
  sc_Register    = scRegister,    /* value of symbol is register number */
  sc_Abs         = scAbs,         /* value of symbol is absolute */
  sc_Undefined   = scUndefined,   /* who knows? */
  sc_CdbLocal    = scCdbLocal,    /* variable's value is IN se->va.?? */
  sc_Bits        = scBits,        /* this is a bit field */
  sc_CdbSystem   = scCdbSystem,   /* var's value is IN CDB's address space */
  sc_RegImage    = scRegImage,    /* register value saved on stack */
  sc_Info        = scInfo,        /* symbol contains debugger information */
  sc_UserStruct  = scUserStruct,  /* addr in struct user for current process */
  sc_SData       = scSData,       /* load time only small data */
  sc_SBss        = scSBss,        /* load time only small common */
  sc_RData       = scRData,       /* load time only read only data */
  sc_Var         = scVar,         /* Var parameter (fortran,pascal) */
  sc_Common      = scCommon,      /* common variable */
  sc_SCommon     = scSCommon,     /* small common */
  sc_VarRegister = scVarRegister, /* Var parameter in a register */
  sc_Variant     = scVariant,     /* Variant record */
  sc_SUndefined  = scSUndefined,  /* small undefined(external) data */
  sc_Init        = scInit,        /* .init section symbol */
  sc_Max         = scMax          /* Max storage class+1 */
} sc_t;

/* Redefinition of symbol type.  */

typedef enum st {
  st_Nil        = stNil,        /* Nuthin' special */
  st_Global     = stGlobal,     /* external symbol */
  st_Static     = stStatic,     /* static */
  st_Param      = stParam,      /* procedure argument */
  st_Local      = stLocal,      /* local variable */
  st_Label      = stLabel,      /* label */
  st_Proc       = stProc,       /*     "      "  Procedure */
  st_Block      = stBlock,      /* beginning of block */
  st_End        = stEnd,        /* end (of anything) */
  st_Member     = stMember,     /* member (of anything  - struct/union/enum */
  st_Typedef    = stTypedef,    /* type definition */
  st_File       = stFile,       /* file name */
  st_RegReloc   = stRegReloc,   /* register relocation */
  st_Forward    = stForward,    /* forwarding address */
  st_StaticProc = stStaticProc, /* load time only static procs */
  st_StaParam   = stStaParam,   /* Fortran static parameters */
  st_Constant   = stConstant,   /* const */
#ifdef stStruct
  st_Struct     = stStruct,     /* struct */
  st_Union      = stUnion,      /* union */
  st_Enum       = stEnum,       /* enum */
#endif
  st_Str        = stStr,        /* string */
  st_Number     = stNumber,     /* pure number (ie. 4 NOR 2+2) */
  st_Expr       = stExpr,       /* 2+2 vs. 4 */
  st_Type       = stType,       /* post-coercion SER */
  st_Max        = stMax         /* max type+1 */
} st_t;

/* Redefinition of type qualifiers.  */

typedef enum tq {
  tq_Nil        = tqNil,        /* bt is what you see */
  tq_Ptr        = tqPtr,        /* pointer */
  tq_Proc       = tqProc,       /* procedure */
  tq_Array      = tqArray,      /* duh */
  tq_Far        = tqFar,        /* longer addressing - 8086/8 land */
  tq_Vol        = tqVol,        /* volatile */
  tq_Max        = tqMax         /* Max type qualifier+1 */
} tq_t;

/* Redefinition of basic types.  */

typedef enum bt {
  bt_Nil        = btNil,        /* undefined */
  bt_Adr        = btAdr,        /* address - integer same size as pointer */
  bt_Char       = btChar,       /* character */
  bt_UChar      = btUChar,      /* unsigned character */
  bt_Short      = btShort,      /* short */
  bt_UShort     = btUShort,     /* unsigned short */
  bt_Int        = btInt,        /* int */
  bt_UInt       = btUInt,       /* unsigned int */
  bt_Long       = btLong,       /* long */
  bt_ULong      = btULong,      /* unsigned long */
  bt_Float      = btFloat,      /* float (real) */
  bt_Double     = btDouble,     /* Double (real) */
  bt_Struct     = btStruct,     /* Structure (Record) */
  bt_Union      = btUnion,      /* Union (variant) */
  bt_Enum       = btEnum,       /* Enumerated */
  bt_Typedef    = btTypedef,    /* defined via a typedef, isymRef points */
  bt_Range      = btRange,      /* subrange of int */
  bt_Set        = btSet,        /* pascal sets */
  bt_Complex    = btComplex,    /* fortran complex */
  bt_DComplex   = btDComplex,   /* fortran double complex */
  bt_Indirect   = btIndirect,   /* forward or unnamed typedef */
  bt_FixedDec   = btFixedDec,   /* Fixed Decimal */
  bt_FloatDec   = btFloatDec,   /* Float Decimal */
  bt_String     = btString,     /* Varying Length Character String */
  bt_Bit        = btBit,        /* Aligned Bit String */
  bt_Picture    = btPicture,    /* Picture */
  bt_Void       = btVoid,       /* void */
  bt_Max        = btMax         /* Max basic type+1 */
} bt_t;

/* Redefinition of the language codes.  */

typedef enum lang {
  lang_C         = langC,
  lang_Pascal    = langPascal,
  lang_Fortran   = langFortran,
  lang_Assembler = langAssembler,
  lang_Machine   = langMachine,
  lang_Nil       = langNil,
  lang_Ada       = langAda,
  lang_Pl1       = langPl1,
  lang_Cobol     = langCobol
} lang_t;

/* Redefinition of the debug level codes.  */

typedef enum glevel {
  glevel_0      = GLEVEL_0,
  glevel_1      = GLEVEL_1,
  glevel_2      = GLEVEL_2,
  glevel_3      = GLEVEL_3
} glevel_t;

\f
/* Keep track of the active scopes.  */
typedef struct scope {
  struct scope *prev;           /* previous scope */
  ulong open_sym;               /* symbol opening scope */
  sc_t sc;                      /* storage class */
  st_t st;                      /* symbol type */
} scope_t;

struct filehdr global_hdr;      /* a.out header */

int      errors         = 0;    /* # of errors */
int      want_aux       = 0;    /* print aux table */
int      want_line      = 0;    /* print line numbers */
int      want_rfd       = 0;    /* print relative file desc's */
int      want_scope     = 0;    /* print scopes for every symbol */
int      tfile          = 0;    /* no global header file */
int      tfile_fd;              /* file descriptor of .T file */
off_t    tfile_offset;          /* current offset in .T file */
scope_t *cur_scope      = 0;    /* list of active scopes */
scope_t *free_scope     = 0;    /* list of freed scopes */
HDRR     sym_hdr;               /* symbolic header */
char    *l_strings;             /* local strings */
char    *e_strings;             /* external strings */
SYMR    *l_symbols;             /* local symbols */
EXTR    *e_symbols;             /* external symbols */
LINER   *lines;                 /* line numbers */
DNR     *dense_nums;            /* dense numbers */
OPTR    *opt_symbols;           /* optimization symbols */
AUXU    *aux_symbols;           /* Auxiliary symbols */
char    *aux_used;              /* map of which aux syms are used */
FDR     *file_desc;             /* file tables */
ulong   *rfile_desc;            /* relative file tables */
PDR     *proc_desc;             /* procedure tables */

/* Forward reference for functions.  */
PTR_T read_seek         __proto((PTR_T, size_t, off_t, const char *));
void  read_tfile        __proto((void));
void  print_global_hdr  __proto((struct filehdr *));
void  print_sym_hdr     __proto((HDRR *));
void  print_file_desc   __proto((FDR *, int));
void  print_symbol      __proto((SYMR *, int, char *, AUXU *, int, FDR *));
void  print_aux         __proto((AUXU, int, int));
void  emit_aggregate    __proto((char *, AUXU, AUXU, const char *, FDR *));
char *st_to_string      __proto((st_t));
char *sc_to_string      __proto((sc_t));
char *glevel_to_string  __proto((glevel_t));
char *lang_to_string    __proto((lang_t));
char *type_to_string    __proto((AUXU *, int, FDR *));

#ifndef __alpha
extern PTR_T    malloc  __proto((size_t));
extern PTR_T    calloc  __proto((size_t, size_t));
extern PTR_T    realloc __proto((PTR_T, size_t));
extern void     free    __proto((PTR_T));
#endif

extern char *optarg;
extern int   optind;
extern int   opterr;

/* Create a table of debugging stab-codes and corresponding names.  */

#define __define_stab(NAME, CODE, STRING) {(int)CODE, STRING},
struct {short code; char string[10];} stab_names[]  = {
#include "stab.def"
#undef __define_stab
};

\f
/* Read some bytes at a specified location, and return a pointer.  */

PTR_T
read_seek (ptr, size, offset, context)
     PTR_T ptr;                 /* pointer to buffer or NULL */
     size_t size;               /* # bytes to read */
     off_t offset;              /* offset to read at */
     const char *context;       /* context for error message */
{
  long read_size = 0;

  if (size == 0)                /* nothing to read */
    return ptr;

  if ((ptr == (PTR_T) 0 && (ptr = malloc (size)) == (PTR_T) 0)
      || (tfile_offset != offset && lseek (tfile_fd, offset, 0) == -1)
      || (read_size = read (tfile_fd, ptr, size)) < 0)
    {
      perror (context);
      exit (1);
    }

  if (read_size != size)
    {
      fprintf (stderr, "%s: read %ld bytes, expected %ld bytes\n",
               context, read_size, (long) size);
      exit (1);
    }

  tfile_offset = offset + size;
  return ptr;
}

\f
/* Convert language code to string format.  */

char *
lang_to_string (lang)
     lang_t lang;
{
  switch (lang)
    {
    case langC:         return "C";
    case langPascal:    return "Pascal";
    case langFortran:   return "Fortran";
    case langAssembler: return "Assembler";
    case langMachine:   return "Machine";
    case langNil:       return "Nil";
    case langAda:       return "Ada";
    case langPl1:       return "Pl1";
    case langCobol:     return "Cobol";
    }

  return "Unknown language";
}

\f
/* Convert storage class to string.  */

char *
sc_to_string(storage_class)
     sc_t storage_class;
{
  switch(storage_class)
    {
    case sc_Nil:         return "Nil";
    case sc_Text:        return "Text";
    case sc_Data:        return "Data";
    case sc_Bss:         return "Bss";
    case sc_Register:    return "Register";
    case sc_Abs:         return "Abs";
    case sc_Undefined:   return "Undefined";
    case sc_CdbLocal:    return "CdbLocal";
    case sc_Bits:        return "Bits";
    case sc_CdbSystem:   return "CdbSystem";
    case sc_RegImage:    return "RegImage";
    case sc_Info:        return "Info";
    case sc_UserStruct:  return "UserStruct";
    case sc_SData:       return "SData";
    case sc_SBss:        return "SBss";
    case sc_RData:       return "RData";
    case sc_Var:         return "Var";
    case sc_Common:      return "Common";
    case sc_SCommon:     return "SCommon";
    case sc_VarRegister: return "VarRegister";
    case sc_Variant:     return "Variant";
    case sc_SUndefined:  return "SUndefined";
    case sc_Init:        return "Init";
    case sc_Max:         return "Max";
    }

  return "???";
}

\f
/* Convert symbol type to string.  */

char *
st_to_string(symbol_type)
     st_t symbol_type;
{
  switch(symbol_type)
    {
    case st_Nil:        return "Nil";
    case st_Global:     return "Global";
    case st_Static:     return "Static";
    case st_Param:      return "Param";
    case st_Local:      return "Local";
    case st_Label:      return "Label";
    case st_Proc:       return "Proc";
    case st_Block:      return "Block";
    case st_End:        return "End";
    case st_Member:     return "Member";
    case st_Typedef:    return "Typedef";
    case st_File:       return "File";
    case st_RegReloc:   return "RegReloc";
    case st_Forward:    return "Forward";
    case st_StaticProc: return "StaticProc";
    case st_Constant:   return "Constant";
    case st_StaParam:   return "StaticParam";
#ifdef stStruct
    case st_Struct:     return "Struct";
    case st_Union:      return "Union";
    case st_Enum:       return "Enum";
#endif
    case st_Str:        return "String";
    case st_Number:     return "Number";
    case st_Expr:       return "Expr";
    case st_Type:       return "Type";
    case st_Max:        return "Max";
    }

  return "???";
}

\f
/* Convert debug level to string.  */

char *
glevel_to_string (g_level)
     glevel_t g_level;
{
  switch(g_level)
    {
    case GLEVEL_0: return "G0";
    case GLEVEL_1: return "G1";
    case GLEVEL_2: return "G2";
    case GLEVEL_3: return "G3";
    }

  return "??";
}
     
\f
/* Convert the type information to string format.  */

char *
type_to_string (aux_ptr, index, fdp)
     AUXU *aux_ptr;
     int index;
     FDR *fdp;
{
  AUXU u;
  struct qual {
    tq_t type;
    int  low_bound;
    int  high_bound;
    int  stride;
  } qualifiers[7];

  bt_t basic_type;
  int i;
  static char buffer1[1024];
  static char buffer2[1024];
  char *p1 = buffer1;
  char *p2 = buffer2;
  char *used_ptr = aux_used + (aux_ptr - aux_symbols);

  for (i = 0; i < 7; i++)
    {
      qualifiers[i].low_bound = 0;
      qualifiers[i].high_bound = 0;
      qualifiers[i].stride = 0;
    }

  used_ptr[index] = 1;
  u = aux_ptr[index++];
  if (u.isym == -1)
    return "-1 (no type)";

  basic_type = (bt_t) u.ti.bt;
  qualifiers[0].type = (tq_t) u.ti.tq0;
  qualifiers[1].type = (tq_t) u.ti.tq1;
  qualifiers[2].type = (tq_t) u.ti.tq2;
  qualifiers[3].type = (tq_t) u.ti.tq3;
  qualifiers[4].type = (tq_t) u.ti.tq4;
  qualifiers[5].type = (tq_t) u.ti.tq5;
  qualifiers[6].type = tq_Nil;

  /*
   * Go get the basic type.
   */
  switch (basic_type)
    {
    case bt_Nil:                /* undefined */
      strcpy (p1, "nil");
      break;

    case bt_Adr:                /* address - integer same size as pointer */
      strcpy (p1, "address");
      break;

    case bt_Char:               /* character */
      strcpy (p1, "char");
      break;

    case bt_UChar:              /* unsigned character */
      strcpy (p1, "unsigned char");
      break;

    case bt_Short:              /* short */
      strcpy (p1, "short");
      break;

    case bt_UShort:             /* unsigned short */
      strcpy (p1, "unsigned short");
      break;

    case bt_Int:                /* int */
      strcpy (p1, "int");
      break;

    case bt_UInt:               /* unsigned int */
      strcpy (p1, "unsigned int");
      break;

    case bt_Long:               /* long */
      strcpy (p1, "long");
      break;

    case bt_ULong:              /* unsigned long */
      strcpy (p1, "unsigned long");
      break;

    case bt_Float:              /* float (real) */
      strcpy (p1, "float");
      break;

    case bt_Double:             /* Double (real) */
      strcpy (p1, "double");
      break;

      /* Structures add 1-2 aux words:
         1st word is [ST_RFDESCAPE, offset] pointer to struct def;
         2nd word is file index if 1st word rfd is ST_RFDESCAPE.  */

    case bt_Struct:             /* Structure (Record) */
      emit_aggregate (p1, aux_ptr[index], aux_ptr[index+1], "struct", fdp);
      used_ptr[index] = 1;
      if (aux_ptr[index].rndx.rfd == ST_RFDESCAPE)
        used_ptr[++index] = 1;

      index++;                  /* skip aux words */
      break;

      /* Unions add 1-2 aux words:
         1st word is [ST_RFDESCAPE, offset] pointer to union def;
         2nd word is file index if 1st word rfd is ST_RFDESCAPE.  */

    case bt_Union:              /* Union */
      emit_aggregate (p1, aux_ptr[index], aux_ptr[index+1], "union", fdp);
      used_ptr[index] = 1;
      if (aux_ptr[index].rndx.rfd == ST_RFDESCAPE)
        used_ptr[++index] = 1;

      index++;                  /* skip aux words */
      break;

      /* Enumerations add 1-2 aux words:
         1st word is [ST_RFDESCAPE, offset] pointer to enum def;
         2nd word is file index if 1st word rfd is ST_RFDESCAPE.  */

    case bt_Enum:               /* Enumeration */
      emit_aggregate (p1, aux_ptr[index], aux_ptr[index+1], "enum", fdp);
      used_ptr[index] = 1;
      if (aux_ptr[index].rndx.rfd == ST_RFDESCAPE)
        used_ptr[++index] = 1;

      index++;                  /* skip aux words */
      break;

    case bt_Typedef:            /* defined via a typedef, isymRef points */
      strcpy (p1, "typedef");
      break;

    case bt_Range:              /* subrange of int */
      strcpy (p1, "subrange");
      break;

    case bt_Set:                /* pascal sets */
      strcpy (p1, "set");
      break;

    case bt_Complex:            /* fortran complex */
      strcpy (p1, "complex");
      break;

    case bt_DComplex:           /* fortran double complex */
      strcpy (p1, "double complex");
      break;

    case bt_Indirect:           /* forward or unnamed typedef */
      strcpy (p1, "forward/unnamed typedef");
      break;

    case bt_FixedDec:           /* Fixed Decimal */
      strcpy (p1, "fixed decimal");
      break;

    case bt_FloatDec:           /* Float Decimal */
      strcpy (p1, "float decimal");
      break;

    case bt_String:             /* Varying Length Character String */
      strcpy (p1, "string");
      break;

    case bt_Bit:                /* Aligned Bit String */
      strcpy (p1, "bit");
      break;

    case bt_Picture:            /* Picture */
      strcpy (p1, "picture");
      break;

    case bt_Void:               /* Void */
      strcpy (p1, "void");
      break;

    default:
      sprintf (p1, "Unknown basic type %d", (int) basic_type);
      break;
    }

  p1 += strlen (buffer1);

  /*
   * If this is a bitfield, get the bitsize.
   */
  if (u.ti.fBitfield)
    {
      int bitsize;

      used_ptr[index] = 1;
      bitsize = aux_ptr[index++].width;
      sprintf (p1, " : %d", bitsize);
      p1 += strlen (buffer1);
    }


  /*
   * Deal with any qualifiers.
   */
  if (qualifiers[0].type != tq_Nil)
    {
      /*
       * Snarf up any array bounds in the correct order.  Arrays
       * store 5 successive words in the aux. table:
       *        word 0  RNDXR to type of the bounds (ie, int)
       *        word 1  Current file descriptor index
       *        word 2  low bound
       *        word 3  high bound (or -1 if [])
       *        word 4  stride size in bits
       */
      for (i = 0; i < 7; i++)
        {
          if (qualifiers[i].type == tq_Array)
            {
              qualifiers[i].low_bound  = aux_ptr[index+2].dnLow;
              qualifiers[i].high_bound = aux_ptr[index+3].dnHigh;
              qualifiers[i].stride     = aux_ptr[index+4].width;
              used_ptr[index] = 1;
              used_ptr[index+1] = 1;
              used_ptr[index+2] = 1;
              used_ptr[index+3] = 1;
              used_ptr[index+4] = 1;
              index += 5;
            }
        }

      /*
       * Now print out the qualifiers.
       */
      for (i = 0; i < 6; i++)
        {
          switch (qualifiers[i].type)
            {
            case tq_Nil:
            case tq_Max:
              break;

            case tq_Ptr:
              strcpy (p2, "ptr to ");
              p2 += sizeof ("ptr to ")-1;
              break;

            case tq_Vol:
              strcpy (p2, "volatile ");
              p2 += sizeof ("volatile ")-1;
              break;

            case tq_Far:
              strcpy (p2, "far ");
              p2 += sizeof ("far ")-1;
              break;

            case tq_Proc:
              strcpy (p2, "func. ret. ");
              p2 += sizeof ("func. ret. ");
              break;

            case tq_Array:
              {
                int first_array = i;
                int j;

                /* Print array bounds reversed (ie, in the order the C
                   programmer writes them).  C is such a fun language....  */

                while (i < 5 && qualifiers[i+1].type == tq_Array)
                  i++;

                for (j = i; j >= first_array; j--)
                  {
                    strcpy (p2, "array [");
                    p2 += sizeof ("array [")-1;
                    if (qualifiers[j].low_bound != 0)
                      sprintf (p2,
                               "%ld:%ld {%ld bits}",
                               (long) qualifiers[j].low_bound,
                               (long) qualifiers[j].high_bound,
                               (long) qualifiers[j].stride);

                    else if (qualifiers[j].high_bound != -1)
                      sprintf (p2,
                               "%ld {%ld bits}",
                               (long) (qualifiers[j].high_bound + 1),
                               (long) (qualifiers[j].stride));

                    else
                      sprintf (p2, " {%ld bits}", (long) (qualifiers[j].stride));

                    p2 += strlen (p2);
                    strcpy (p2, "] of ");
                    p2 += sizeof ("] of ")-1;
                  }
              }
              break;
            }
        }
    }

  strcpy (p2, buffer1);
  return buffer2;
}

\f
/* Print out the global file header for object files.  */

void
print_global_hdr (ptr)
     struct filehdr *ptr;
{
  char *time = ctime ((time_t *)&ptr->f_timdat);
  ushort flags = ptr->f_flags;

  printf("Global file header:\n");
  printf("    %-*s 0x%x\n",    24, "magic number",           (ushort) ptr->f_magic);
  printf("    %-*s %d\n",      24, "# sections",             (int)    ptr->f_nscns);
  printf("    %-*s %ld, %s",   24, "timestamp",              (long)   ptr->f_timdat, time);
  printf("    %-*s %ld\n",     24, "symbolic header offset", (long)   ptr->f_symptr);
  printf("    %-*s %ld\n",     24, "symbolic header size",   (long)   ptr->f_nsyms);
  printf("    %-*s %ld\n",     24, "optional header",        (long)   ptr->f_opthdr);
  printf("    %-*s 0x%x",     24, "flags",                   (ushort) flags);

  if ((flags & F_RELFLG) != 0)
    printf (", F_RELFLG");

  if ((flags & F_EXEC) != 0)
    printf (", F_EXEC");

  if ((flags & F_LNNO) != 0)
    printf (", F_LNNO");

  if ((flags & F_LSYMS) != 0)
    printf (", F_LSYMS");

  if ((flags & F_MINMAL) != 0)
    printf (", F_MINMAL");

  if ((flags & F_UPDATE) != 0)
    printf (", F_UPDATE");

  if ((flags & F_SWABD) != 0)
    printf (", F_SWABD");

  if ((flags & F_AR16WR) != 0)
    printf (", F_AR16WR");

  if ((flags & F_AR32WR) != 0)
    printf (", F_AR32WR");

  if ((flags & F_AR32W) != 0)
    printf (", F_AR32W");

  if ((flags & F_PATCH) != 0)
    printf (", F_PATCH/F_NODF");

  printf ("\n\n");
}

\f
/* Print out the symbolic header.  */

void
print_sym_hdr (sym_ptr)
     HDRR *sym_ptr;
{
  int width = 20;

  printf("Symbolic header, magic number = 0x%04x, vstamp = %d.%d:\n\n",
         sym_ptr->magic & 0xffff,
         (sym_ptr->vstamp & 0xffff) >> 8,
         sym_ptr->vstamp & 0xff);

  printf("    %-*s %11s %11s %11s\n", width, "Info", "Offset", "Number", "Bytes");
  printf("    %-*s %11s %11s %11s\n", width, "====", "======", "======", "=====\n");

  printf("    %-*s %11ld %11ld %11ld [%d]\n", width, "Line numbers",
         (long) sym_ptr->cbLineOffset,
         (long) sym_ptr->cbLine,
         (long) sym_ptr->cbLine,
         (int) sym_ptr->ilineMax);

  printf("    %-*s %11ld %11ld %11ld\n", width, "Dense numbers",
         (long) sym_ptr->cbDnOffset,
         (long) sym_ptr->idnMax,
         (long) (sym_ptr->idnMax * sizeof (DNR)));

  printf("    %-*s %11ld %11ld %11ld\n", width, "Procedures Tables",
         (long) sym_ptr->cbPdOffset,
         (long) sym_ptr->ipdMax,
         (long) (sym_ptr->ipdMax * sizeof (PDR)));

  printf("    %-*s %11ld %11ld %11ld\n", width, "Local Symbols",
         (long) sym_ptr->cbSymOffset,
         (long) sym_ptr->isymMax,
         (long) (sym_ptr->isymMax * sizeof (SYMR)));

  printf("    %-*s %11ld %11ld %11ld\n", width, "Optimization Symbols",
         (long) sym_ptr->cbOptOffset,
         (long) sym_ptr->ioptMax,
         (long) (sym_ptr->ioptMax * sizeof (OPTR)));

  printf("    %-*s %11ld %11ld %11ld\n", width, "Auxiliary Symbols",
         (long) sym_ptr->cbAuxOffset,
         (long) sym_ptr->iauxMax,
         (long) (sym_ptr->iauxMax * sizeof (AUXU)));

  printf("    %-*s %11ld %11ld %11ld\n", width, "Local Strings",
         (long) sym_ptr->cbSsOffset,
         (long) sym_ptr->issMax,
         (long) sym_ptr->issMax);

  printf("    %-*s %11ld %11ld %11ld\n", width, "External Strings",
         (long) sym_ptr->cbSsExtOffset,
         (long) sym_ptr->issExtMax,
         (long) sym_ptr->issExtMax);

  printf("    %-*s %11ld %11ld %11ld\n", width, "File Tables",
         (long) sym_ptr->cbFdOffset,
         (long) sym_ptr->ifdMax,
         (long) (sym_ptr->ifdMax * sizeof (FDR)));

  printf("    %-*s %11ld %11ld %11ld\n", width, "Relative Files",
         (long) sym_ptr->cbRfdOffset,
         (long) sym_ptr->crfd,
         (long) (sym_ptr->crfd * sizeof (ulong)));

  printf("    %-*s %11ld %11ld %11ld\n", width, "External Symbols",
         (long) sym_ptr->cbExtOffset,
         (long) sym_ptr->iextMax,
         (long) (sym_ptr->iextMax * sizeof (EXTR)));
}

\f
/* Print out a symbol.  */

void
print_symbol (sym_ptr, number, strbase, aux_base, ifd, fdp)
     SYMR *sym_ptr;
     int number;
     char *strbase;
     AUXU *aux_base;
     int ifd;
     FDR *fdp;
{
  sc_t storage_class = (sc_t) sym_ptr->sc;
  st_t symbol_type   = (st_t) sym_ptr->st;
  ulong index        = sym_ptr->index;
  char *used_ptr     = aux_used + (aux_base - aux_symbols);
  scope_t *scope_ptr;

  printf ("\n    Symbol# %d: \"%s\"\n", number, sym_ptr->iss + strbase);

  if (aux_base != (AUXU *) 0 && index != indexNil)
    switch (symbol_type)
      {
      case st_Nil:
      case st_Label:
        break;

      case st_File:
      case st_Block:
        printf ("      End+1 symbol: %ld\n", index);
        if (want_scope)
          {
            if (free_scope == (scope_t *) 0)
              scope_ptr = (scope_t *) malloc (sizeof (scope_t));
            else
              {
                scope_ptr = free_scope;
                free_scope = scope_ptr->prev;
              }
            scope_ptr->open_sym = number;
            scope_ptr->st = symbol_type;
            scope_ptr->sc = storage_class;
            scope_ptr->prev = cur_scope;
            cur_scope = scope_ptr;
          }
        break;

      case st_End:
        if (storage_class == sc_Text || storage_class == sc_Info)
          printf ("      First symbol: %ld\n", index);
        else
          {
            used_ptr[index] = 1;
            printf ("      First symbol: %ld\n", (long) aux_base[index].isym);
          }

        if (want_scope)
          {
            if (cur_scope == (scope_t *) 0)
              printf ("      Can't pop end scope\n");
            else
              {
                scope_ptr = cur_scope;
                cur_scope = scope_ptr->prev;
                scope_ptr->prev = free_scope;
                free_scope = scope_ptr;
              }
          }
        break;

      case st_Proc:
      case st_StaticProc:
        if (MIPS_IS_STAB(sym_ptr))
          ;
        else if (ifd == -1)             /* local symbol */
          {
            used_ptr[index] = used_ptr[index+1] = 1;
            printf ("      End+1 symbol: %-7ld   Type:  %s\n",
                    (long) aux_base[index].isym,
                    type_to_string (aux_base, index+1, fdp));
          }
        else                    /* global symbol */
          printf ("      Local symbol: %ld\n", index);

        if (want_scope)
          {
            if (free_scope == (scope_t *) 0)
              scope_ptr = (scope_t *) malloc (sizeof (scope_t));
            else
              {
                scope_ptr = free_scope;
                free_scope = scope_ptr->prev;
              }
            scope_ptr->open_sym = number;
            scope_ptr->st = symbol_type;
            scope_ptr->sc = storage_class;
            scope_ptr->prev = cur_scope;
            cur_scope = scope_ptr;
          }
        break;

#ifdef stStruct
      case st_Struct:
      case st_Union:
      case st_Enum:
        printf ("      End+1 symbol: %lu\n", index);
        break;
#endif

      default:
        if (!MIPS_IS_STAB (sym_ptr))
          {
            used_ptr[index] = 1;
            printf ("      Type: %s\n",
                    type_to_string (aux_base, index, fdp));
          }
        break;
      }

  if (want_scope)
    {
      printf ("      Scopes:  ");
      if (cur_scope == (scope_t *) 0)
        printf (" none\n");
      else
        {
          for (scope_ptr = cur_scope;
               scope_ptr != (scope_t *) 0;
               scope_ptr = scope_ptr->prev)
            {
              char *class;
              if (scope_ptr->st == st_Proc || scope_ptr->st == st_StaticProc)
                class = "func.";
              else if (scope_ptr->st == st_File)
                class = "file";
              else if (scope_ptr->st == st_Block && scope_ptr->sc == sc_Text)
                class = "block";
              else if (scope_ptr->st == st_Block && scope_ptr->sc == sc_Info)
                class = "type";
              else
                class = "???";

              printf (" %ld [%s]", scope_ptr->open_sym, class);
            }
          printf ("\n");
        }
    }

  printf ("      Value: %-13ld    ",
          (long)sym_ptr->value);
  if (ifd == -1)
    printf ("String index: %ld\n", (long)sym_ptr->iss);
  else
    printf ("String index: %-11ld Ifd: %d\n",
            (long)sym_ptr->iss, ifd);

  printf ("      Symbol type: %-11sStorage class: %-11s",
          st_to_string (symbol_type), sc_to_string (storage_class));

  if (MIPS_IS_STAB(sym_ptr))
    {
      register int i = sizeof(stab_names) / sizeof(stab_names[0]);
      char *stab_name = "stab";
      short code = MIPS_UNMARK_STAB(sym_ptr->index);
      while (--i >= 0)
        if (stab_names[i].code == code)
          {
            stab_name = stab_names[i].string;
            break;
          }
      printf ("Index: 0x%lx (%s)\n", (long)sym_ptr->index, stab_name);
    }
  else if (sym_ptr->st == stLabel && sym_ptr->index != indexNil)
    printf ("Index: %ld (line#)\n", (long)sym_ptr->index);
  else
    printf ("Index: %ld\n", (long)sym_ptr->index);

}

\f
/* Print out a word from the aux. table in various formats.  */

void
print_aux (u, auxi, used)
     AUXU u;
     int auxi;
     int used;
{
  printf ("\t%s#%-5d %11ld, [%4ld/%7ld], [%2d %1d:%1d %1x:%1x:%1x:%1x:%1x:%1x]\n",
          (used) ? "  " : "* ",
          auxi,
          (long) u.isym,
          (long) u.rndx.rfd,
          (long) u.rndx.index,
          u.ti.bt,
          u.ti.fBitfield,
          u.ti.continued,
          u.ti.tq0,
          u.ti.tq1,
          u.ti.tq2,
          u.ti.tq3,
          u.ti.tq4,
          u.ti.tq5);
}

\f
/* Write aggregate information to a string.  */

void
emit_aggregate (string, u, u2, which, fdp)
     char *string;
     AUXU u;
     AUXU u2;
     const char *which;
     FDR *fdp;
{
  unsigned int ifd = u.rndx.rfd;
  unsigned int index = u.rndx.index;
  const char *name;
  
  if (ifd == ST_RFDESCAPE)
    ifd = u2.isym;
  
  /* An ifd of -1 is an opaque type.  An escaped index of 0 is a
     struct return type of a procedure compiled without -g.  */
  if (ifd == 0xffffffff
      || (u.rndx.rfd == ST_RFDESCAPE && index == 0))
    name = "<undefined>";
  else if (index == indexNil)
    name = "<no name>";
  else
    {
      if (fdp == 0 || sym_hdr.crfd == 0)
        fdp = &file_desc[ifd];
      else
        fdp = &file_desc[rfile_desc[fdp->rfdBase + ifd]];
      name = &l_strings[fdp->issBase + l_symbols[index + fdp->isymBase].iss];
    }
  
  sprintf (string,
           "%s %s { ifd = %u, index = %u }",
           which, name, ifd, index);
}

\f
/* Print out information about a file descriptor, and the symbols,
   procedures, and line numbers within it.  */

void
print_file_desc (fdp, number)
     FDR *fdp;
     int number;
{
  char *str_base;
  AUXU *aux_base;
  int symi, pdi;
  int width = 20;
  char *used_base;
  
  str_base = l_strings + fdp->issBase;  
  aux_base = aux_symbols + fdp->iauxBase;
  used_base = aux_used + (aux_base - aux_symbols);

  printf ("\nFile #%d, \"%s\"\n\n", number, str_base + fdp->rss);

  printf ("    Name index  = %-10ld Readin      = %s\n",
          (long) fdp->rss, (fdp->fReadin) ? "Yes" : "No");

  printf ("    Merge       = %-10s Endian      = %s\n",
          (fdp->fMerge)  ? "Yes" : "No",
          (fdp->fBigendian) ? "BIG" : "LITTLE");

  printf ("    Debug level = %-10s Language    = %s\n",
          glevel_to_string (fdp->glevel),
          lang_to_string((lang_t) fdp->lang));

  printf ("    Adr         = 0x%08lx\n\n", (long) fdp->adr);

  printf("    %-*s %11s %11s %11s %11s\n", width, "Info", "Start", "Number", "Size", "Offset");
  printf("    %-*s %11s %11s %11s %11s\n", width, "====", "=====", "======", "====", "======");

  printf("    %-*s %11lu %11lu %11lu %11lu\n",
         width, "Local strings",
         (ulong) fdp->issBase,
         (ulong) fdp->cbSs,
         (ulong) fdp->cbSs,
         (ulong) (fdp->issBase + sym_hdr.cbSsOffset));

  printf("    %-*s %11lu %11lu %11lu %11lu\n",
         width, "Local symbols",
         (ulong) fdp->isymBase,
         (ulong) fdp->csym,
         (ulong) (fdp->csym * sizeof (SYMR)),
         (ulong) (fdp->isymBase * sizeof (SYMR) + sym_hdr.cbSymOffset));

  printf("    %-*s %11lu %11lu %11lu %11lu\n",
         width, "Line numbers",
         (ulong) fdp->cbLineOffset,
         (ulong) fdp->cline,
         (ulong) fdp->cbLine,
         (ulong) (fdp->cbLineOffset + sym_hdr.cbLineOffset));

  printf("    %-*s %11lu %11lu %11lu %11lu\n",
         width, "Optimization symbols",
         (ulong) fdp->ioptBase,
         (ulong) fdp->copt,
         (ulong) (fdp->copt * sizeof (OPTR)),
         (ulong) (fdp->ioptBase * sizeof (OPTR) + sym_hdr.cbOptOffset));

  printf("    %-*s %11lu %11lu %11lu %11lu\n",
         width, "Procedures",
         (ulong) fdp->ipdFirst,
         (ulong) fdp->cpd,
         (ulong) (fdp->cpd * sizeof (PDR)),
         (ulong) (fdp->ipdFirst * sizeof (PDR) + sym_hdr.cbPdOffset));

  printf("    %-*s %11lu %11lu %11lu %11lu\n",
         width, "Auxiliary symbols",
         (ulong) fdp->iauxBase,
         (ulong) fdp->caux,
         (ulong) (fdp->caux * sizeof (AUXU)),
         (ulong) (fdp->iauxBase * sizeof(AUXU) + sym_hdr.cbAuxOffset));

  printf("    %-*s %11lu %11lu %11lu %11lu\n",
         width, "Relative Files",
         (ulong) fdp->rfdBase,
         (ulong) fdp->crfd,
         (ulong) (fdp->crfd * sizeof (ulong)),
         (ulong) (fdp->rfdBase * sizeof(ulong) + sym_hdr.cbRfdOffset));


  if (want_scope && cur_scope != (scope_t *) 0)
    printf ("\n    Warning scope does not start at 0!\n");

  /* 
   * print the info about the symbol table.
   */
  printf ("\n    There are %lu local symbols, starting at %lu\n",
          (ulong) fdp->csym,
          (ulong) (fdp->isymBase + sym_hdr.cbSymOffset));

  for(symi = fdp->isymBase; symi < (fdp->csym + fdp->isymBase); symi++)
    print_symbol (&l_symbols[symi],
                  symi - fdp->isymBase,
                  str_base,
                  aux_base,
                  -1,
                  fdp);

  if (want_scope && cur_scope != (scope_t *) 0)
    printf ("\n    Warning scope does not end at 0!\n");

  /*
   * print the aux. table if desired.
   */

  if (want_aux && fdp->caux != 0)
    {
      int auxi;

      printf ("\n    There are %lu auxiliary table entries, starting at %lu.\n\n",
              (ulong) fdp->caux,
              (ulong) (fdp->iauxBase + sym_hdr.cbAuxOffset));

      for (auxi = fdp->iauxBase; auxi < (fdp->caux + fdp->iauxBase); auxi++)
        print_aux (aux_base[auxi], auxi, used_base[auxi]);
    }

  /*
   * print the relative file descriptors.
   */
  if (want_rfd && fdp->crfd != 0)
    {
      ulong *rfd_ptr, i;

      printf ("\n    There are %lu relative file descriptors, starting at %lu.\n",
              (ulong) fdp->crfd,
              (ulong) fdp->rfdBase);

      rfd_ptr = rfile_desc + fdp->rfdBase;
      for (i = 0; i < fdp->crfd; i++)
        {
          printf ("\t#%-5ld %11ld, 0x%08lx\n", i, *rfd_ptr, *rfd_ptr);
          rfd_ptr++;
        }
    }

  /* 
   * do the procedure descriptors.
   */
  printf ("\n    There are %lu procedure descriptor entries, ", (ulong) fdp->cpd);
  printf ("starting at %lu.\n", (ulong) fdp->ipdFirst);

  for (pdi = fdp->ipdFirst; pdi < (fdp->cpd + fdp->ipdFirst); pdi++)
    {
      PDR *proc_ptr = &proc_desc[pdi];
      printf ("\n\tProcedure descriptor %d:\n", (pdi - fdp->ipdFirst));

      printf ("\t    Name index   = %-11ld Name          = \"%s\"\n",
              (long) l_symbols[proc_ptr->isym + fdp->isymBase].iss,
              l_symbols[proc_ptr->isym + fdp->isymBase].iss + str_base);

      printf ("\t    .mask 0x%08lx,%-9ld .fmask 0x%08lx,%ld\n",
              (long) proc_ptr->regmask,
              (long) proc_ptr->regoffset,
              (long) proc_ptr->fregmask,
              (long) proc_ptr->fregoffset);

      printf ("\t    .frame $%d,%ld,$%d\n",
              (int)  proc_ptr->framereg,
              (long) proc_ptr->frameoffset,
              (int)  proc_ptr->pcreg);

      printf ("\t    Opt. start   = %-11ld Symbols start = %ld\n",
              (long) proc_ptr->iopt,
              (long) proc_ptr->isym);

      printf ("\t    First line # = %-11ld Last line #   = %ld\n",
              (long) proc_ptr->lnLow,
              (long) proc_ptr->lnHigh);

      printf ("\t    Line Offset  = %-11ld Address       = 0x%08lx\n",
              (long) proc_ptr->cbLineOffset,
              (long) proc_ptr->adr);

      /*
       * print the line number entries.
       */

      if (want_line && fdp->cline != 0)
        {
          int delta, count;
          long cur_line = proc_ptr->lnLow;
          uchar *line_ptr = (((uchar *)lines) + proc_ptr->cbLineOffset
                             + fdp->cbLineOffset);
          uchar *line_end;

          if (pdi == fdp->cpd + fdp->ipdFirst - 1)      /* last procedure */
            line_end = ((uchar *)lines) + fdp->cbLine + fdp->cbLineOffset;
          else                                          /* not last proc.  */
            line_end = (((uchar *)lines) + proc_desc[pdi+1].cbLineOffset
                        + fdp->cbLineOffset);

          printf ("\n\tThere are %lu bytes holding line numbers, starting at %lu.\n",
                  (ulong) (line_end - line_ptr),
                  (ulong) (fdp->ilineBase + sym_hdr.cbLineOffset));

          while (line_ptr < line_end)
            {                                           /* sign extend nibble */
              delta = ((*line_ptr >> 4) ^ 0x8) - 0x8;
              count = (*line_ptr & 0xf) + 1;
              if (delta != -8)
                line_ptr++;
              else
                {
                  delta = (((line_ptr[1]) & 0xff) << 8) + ((line_ptr[2]) & 0xff);
                  delta = (delta ^ 0x8000) - 0x8000;
                  line_ptr += 3;
                }

              cur_line += delta;
              printf ("\t    Line %11ld,   delta %5d,   count %2d\n",
                      cur_line,
                      delta,
                      count);
            }
        }
    }
}

\f
/* Read in the portions of the .T file that we will print out.  */

void
read_tfile __proto((void))
{
  short magic;
  off_t sym_hdr_offset = 0;

  (void) read_seek ((PTR_T) &magic, sizeof (magic), (off_t) 0, "Magic number");
  if (!tfile)
    {
      /* Print out the global header, since this is not a T-file.  */

      (void) read_seek ((PTR_T) &global_hdr, sizeof (global_hdr), (off_t) 0,
                        "Global file header");

      print_global_hdr (&global_hdr);

      if (global_hdr.f_symptr == 0)
        {
          printf ("No symbolic header, Goodbye!\n");
          exit (1);
        }

      sym_hdr_offset = global_hdr.f_symptr;
    }

  (void) read_seek ((PTR_T) &sym_hdr,
                    sizeof (sym_hdr),
                    sym_hdr_offset,
                    "Symbolic header");

  print_sym_hdr (&sym_hdr);

  lines = (LINER *) read_seek ((PTR_T) 0,
                               sym_hdr.cbLine,
                               sym_hdr.cbLineOffset,
                               "Line numbers");

  dense_nums = (DNR *) read_seek ((PTR_T) 0,
                                  sym_hdr.idnMax * sizeof (DNR),
                                  sym_hdr.cbDnOffset,
                                  "Dense numbers");

  proc_desc = (PDR *) read_seek ((PTR_T) 0,
                                 sym_hdr.ipdMax * sizeof (PDR),
                                 sym_hdr.cbPdOffset,
                                 "Procedure tables");

  l_symbols = (SYMR *) read_seek ((PTR_T) 0,
                                  sym_hdr.isymMax * sizeof (SYMR),
                                  sym_hdr.cbSymOffset,
                                  "Local symbols");

  opt_symbols = (OPTR *) read_seek ((PTR_T) 0,
                                    sym_hdr.ioptMax * sizeof (OPTR),
                                    sym_hdr.cbOptOffset,
                                    "Optimization symbols");

  aux_symbols = (AUXU *) read_seek ((PTR_T) 0,
                                    sym_hdr.iauxMax * sizeof (AUXU),
                                    sym_hdr.cbAuxOffset,
                                    "Auxiliary symbols");

  if (sym_hdr.iauxMax > 0)
    {
      aux_used = calloc (sym_hdr.iauxMax, 1);
      if (aux_used == (char *) 0)
        {
          perror ("calloc");
          exit (1);
        }
    }

  l_strings = (char *) read_seek ((PTR_T) 0,
                                  sym_hdr.issMax,
                                  sym_hdr.cbSsOffset,
                                  "Local string table");

  e_strings = (char *) read_seek ((PTR_T) 0,
                                  sym_hdr.issExtMax,
                                  sym_hdr.cbSsExtOffset,
                                  "External string table");

  file_desc = (FDR *) read_seek ((PTR_T) 0,
                                 sym_hdr.ifdMax * sizeof (FDR),
                                 sym_hdr.cbFdOffset,
                                 "File tables");

  rfile_desc = (ulong *) read_seek ((PTR_T) 0,
                                    sym_hdr.crfd * sizeof (ulong),
                                    sym_hdr.cbRfdOffset,
                                    "Relative file tables");

  e_symbols = (EXTR *) read_seek ((PTR_T) 0,
                                  sym_hdr.iextMax * sizeof (EXTR),
                                  sym_hdr.cbExtOffset,
                                  "External symbols");
}

\f

int
main (argc, argv)
     int argc;
     char **argv;
{
  int i, opt;

  /*
   * Process arguments
   */
  while ((opt = getopt (argc, argv, "alrst")) != EOF)
    switch (opt)
      {
      default:  errors++;       break;
      case 'a': want_aux++;     break;  /* print aux table */
      case 'l': want_line++;    break;  /* print line numbers */
      case 'r': want_rfd++;     break;  /* print relative fd's */
      case 's': want_scope++;   break;  /* print scope info */
      case 't': tfile++;        break;  /* this is a tfile (without header), and not a .o */
      }

  if (errors || optind != argc - 1)
    {
      fprintf (stderr, "Calling Sequence:\n");
      fprintf (stderr, "\t%s [-alrst] <object-or-T-file>\n", argv[0]);
      fprintf (stderr, "\n");
      fprintf (stderr, "switches:\n");
      fprintf (stderr, "\t-a Print out auxiliary table.\n");
      fprintf (stderr, "\t-l Print out line numbers.\n");
      fprintf (stderr, "\t-r Print out relative file descriptors.\n");
      fprintf (stderr, "\t-s Print out the current scopes for an item.\n");
      fprintf (stderr, "\t-t Assume there is no global header (ie, a T-file).\n");
      return 1;
    }

  /*
   * Open and process the input file.
   */
  tfile_fd = open (argv[optind], O_RDONLY);
  if (tfile_fd < 0)
    {
      perror (argv[optind]);
      return 1;
    }

  read_tfile ();

  /*
   * Print any global aux words if any.
   */
  if (want_aux)
    {
      long last_aux_in_use;

      if (sym_hdr.ifdMax != 0 && file_desc[0].iauxBase != 0)
        {
          printf ("\nGlobal auxiliary entries before first file:\n");
          for (i = 0; i < file_desc[0].iauxBase; i++)
            print_aux (aux_symbols[i], 0, aux_used[i]);
        }

      if (sym_hdr.ifdMax == 0)
        last_aux_in_use = 0;
      else
        last_aux_in_use
          = (file_desc[sym_hdr.ifdMax-1].iauxBase
             + file_desc[sym_hdr.ifdMax-1].caux - 1);

      if (last_aux_in_use < sym_hdr.iauxMax-1)
        {
          printf ("\nGlobal auxiliary entries after last file:\n");
          for (i = last_aux_in_use; i < sym_hdr.iauxMax; i++)
            print_aux (aux_symbols[i], i - last_aux_in_use, aux_used[i]);
        }
    }

  /*
   * Print the information for each file.
   */
  for (i = 0; i < sym_hdr.ifdMax; i++)
    print_file_desc (&file_desc[i], i);

  /* 
   * Print the external symbols.
   */
  want_scope = 0;               /* scope info is meaning for extern symbols */
  printf ("\nThere are %lu external symbols, starting at %lu\n",
          (ulong) sym_hdr.iextMax,
          (ulong) sym_hdr.cbExtOffset);

  for(i = 0; i < sym_hdr.iextMax; i++)
    print_symbol (&e_symbols[i].asym, i, e_strings,
                  aux_symbols + file_desc[e_symbols[i].ifd].iauxBase,
                  e_symbols[i].ifd,
                  &file_desc[e_symbols[i].ifd]);

  /*
   * Print unused aux symbols now.
   */

  if (want_aux)
    {
      int first_time = 1;

      for (i = 0; i < sym_hdr.iauxMax; i++)
        {
          if (! aux_used[i])
            {
              if (first_time)
                {
                  printf ("\nThe following auxiliary table entries were unused:\n\n");
                  first_time = 0;
                }

              printf ("    #%-5d %11ld  0x%08lx  %s\n",
                      i,
                      (long) aux_symbols[i].isym,
                      (long) aux_symbols[i].isym,
                      type_to_string (aux_symbols, i, (FDR *) 0));
            }
        }
    }

  return 0;
}

\f
void
fancy_abort ()
{
  fprintf (stderr, "mips-tdump internal error");
  exit (1);
}

void
fatal(s)
char *s;
{
  fprintf(stderr, "%s\n", s);
  exit(1);
}

/* Same as `malloc' but report error if no memory available.  */

PTR_T
xmalloc (size)
     unsigned size;
{
  register PTR_T value = malloc (size);
  if (value == 0)
    fatal ("Virtual memory exhausted.");
  return value;
}