Subversion Repositories Kolibri OS

Rev

Rev 5197 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | RSS feed

  1. /* BFD backend for Extended Tektronix Hex Format  objects.
  2.    Copyright (C) 1992-2015 Free Software Foundation, Inc.
  3.    Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
  4.  
  5.    This file is part of BFD, the Binary File Descriptor library.
  6.  
  7.    This program is free software; you can redistribute it and/or modify
  8.    it under the terms of the GNU General Public License as published by
  9.    the Free Software Foundation; either version 3 of the License, or
  10.    (at your option) any later version.
  11.  
  12.    This program is distributed in the hope that it will be useful,
  13.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15.    GNU General Public License for more details.
  16.  
  17.    You should have received a copy of the GNU General Public License
  18.    along with this program; if not, write to the Free Software
  19.    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20.    MA 02110-1301, USA.  */
  21.  
  22.  
  23. /* SUBSECTION
  24.         Tektronix Hex Format handling
  25.  
  26.    DESCRIPTION
  27.  
  28.         Tek Hex records can hold symbols and data, but not
  29.         relocations. Their main application is communication with
  30.         devices like PROM programmers and ICE equipment.
  31.  
  32.         It seems that the sections are described as being really big,
  33.         the example I have says that the text section is 0..ffffffff.
  34.         BFD would barf with this, many apps would try to alloc 4GB to
  35.         read in the file.
  36.  
  37.         Tex Hex may contain many sections, but the data which comes in
  38.         has no tag saying which section it belongs to, so we create
  39.         one section for each block of data, called "blknnnn" which we
  40.         stick all the data into.
  41.  
  42.         TekHex may come out of  order and there is no header, so an
  43.         initial scan is required  to discover the minimum and maximum
  44.         addresses used to create the vma and size of the sections we
  45.         create.
  46.         We read in the data into pages of CHUNK_MASK+1 size and read
  47.         them out from that whenever we need to.
  48.  
  49.         Any number of sections may be created for output, we save them
  50.         up and output them when it's time to close the bfd.
  51.  
  52.         A TekHex record looks like:
  53.   EXAMPLE
  54.         %<block length><type><checksum><stuff><cr>
  55.  
  56.   DESCRIPTION
  57.         Where
  58.         o length
  59.         is the number of bytes in the record not including the % sign.
  60.         o type
  61.         is one of:
  62.         3) symbol record
  63.         6) data record
  64.         8) termination record
  65.  
  66.   The data can come out of order, and may be discontigous. This is a
  67.   serial protocol, so big files are unlikely, so we keep a list of 8k chunks.  */
  68.  
  69. #include "sysdep.h"
  70. #include "bfd.h"
  71. #include "libbfd.h"
  72. #include "libiberty.h"
  73.  
  74. typedef struct
  75. {
  76.   bfd_vma low;
  77.   bfd_vma high;
  78. } addr_range_type;
  79.  
  80. typedef struct tekhex_symbol_struct
  81. {
  82.   asymbol symbol;
  83.   struct tekhex_symbol_struct *prev;
  84. } tekhex_symbol_type;
  85.  
  86. static const char digs[] = "0123456789ABCDEF";
  87.  
  88. static char sum_block[256];
  89.  
  90. #define NOT_HEX      20
  91. #define NIBBLE(x)    hex_value(x)
  92. #define HEX(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1]))
  93. #define ISHEX(x)    hex_p(x)
  94. #define TOHEX(d, x) \
  95.   (d)[1] = digs[(x) & 0xf]; \
  96.   (d)[0] = digs[((x)>>4)&0xf];
  97.  
  98. /* Here's an example
  99.    %3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75
  100.    %1B3709T_SEGMENT1108FFFFFFFF
  101.    %2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10
  102.    %373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710
  103.    %373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10
  104.    %373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10
  105.    %373049T_SEGMENT80long$long$int$t71080short$unsigned$i10
  106.    %373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10
  107.    %373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010
  108.    %373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10
  109.    %2734D9T_SEGMENT8Bvoid$t15$151035_main10
  110.    %2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110
  111.    %2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214
  112.    %07 8 10 10
  113.  
  114.    explanation:
  115.    %3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75
  116.     ^ ^^ ^     ^-data
  117.     | || +------ 4 char integer 0x8000
  118.     | |+-------- checksum
  119.     | +--------- type 6 (data record)
  120.     +----------- length 3a chars
  121.    <---------------------- 3a (58 chars) ------------------->
  122.  
  123.    %1B3709T_SEGMENT1108FFFFFFFF
  124.          ^         ^^ ^- 8 character integer 0xffffffff
  125.          |         |+-   1 character integer 0
  126.          |         +--   type 1 symbol (section definition)
  127.          +------------   9 char symbol T_SEGMENT
  128.  
  129.    %2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10
  130.    %373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710
  131.    %373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10
  132.    %373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10
  133.    %373049T_SEGMENT80long$long$int$t71080short$unsigned$i10
  134.    %373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10
  135.    %373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010
  136.    %373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10
  137.    %2734D9T_SEGMENT8Bvoid$t15$151035_main10
  138.    %2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110
  139.    %2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214
  140.    %0781010
  141.  
  142.    Turns into
  143.    sac@thepub$ ./objdump -dx -m m68k f
  144.  
  145.    f:     file format tekhex
  146.    -----x--- 9/55728 -134219416 Sep 29 15:13 1995 f
  147.    architecture: UNKNOWN!, flags 0x00000010:
  148.    HAS_SYMS
  149.    start address 0x00000000
  150.    SECTION 0 [D00000000]        : size 00020000 vma 00000000 align 2**0
  151.    ALLOC, LOAD
  152.    SECTION 1 [D00008000]        : size 00002001 vma 00008000 align 2**0
  153.  
  154.    SECTION 2 [T_SEGMENT]        : size ffffffff vma 00000000 align 2**0
  155.  
  156.    SYMBOL TABLE:
  157.    00000000  g       T_SEGMENT gcc_compiled$
  158.    00000000  g       T_SEGMENT hello$c
  159.    00000000  g       T_SEGMENT int$t1$r1$$21474
  160.    00000000  g       T_SEGMENT char$t2$r2$0$127
  161.    00000000  g       T_SEGMENT long$int$t3$r1$$
  162.    00000000  g       T_SEGMENT unsigned$int$t4$
  163.    00000000  g       T_SEGMENT long$unsigned$in
  164.    00000000  g       T_SEGMENT short$int$t6$r1$
  165.    00000000  g       T_SEGMENT long$long$int$t7
  166.    00000000  g       T_SEGMENT short$unsigned$i
  167.    00000000  g       T_SEGMENT long$long$unsign
  168.    00000000  g       T_SEGMENT signed$char$t10$
  169.    00000000  g       T_SEGMENT unsigned$char$t1
  170.    00000000  g       T_SEGMENT float$t12$r1$4$0
  171.    00000000  g       T_SEGMENT double$t13$r1$8$
  172.    00000000  g       T_SEGMENT long$double$t14$
  173.    00000000  g       T_SEGMENT void$t15$15
  174.    00000000  g       T_SEGMENT _main
  175.    00000000  g       T_SEGMENT $
  176.    00000000  g       T_SEGMENT $
  177.    00000000  g       T_SEGMENT $
  178.    00000010  g       T_SEGMENT $
  179.    00000000  g       T_SEGMENT main$F1
  180.    fcffffff  g       T_SEGMENT i$1
  181.    00000000  g       T_SEGMENT $
  182.    00000010  g       T_SEGMENT $
  183.  
  184.    RELOCATION RECORDS FOR [D00000000]: (none)
  185.  
  186.    RELOCATION RECORDS FOR [D00008000]: (none)
  187.  
  188.    RELOCATION RECORDS FOR [T_SEGMENT]: (none)
  189.  
  190.    Disassembly of section D00000000:
  191.    ...
  192.    00008000 ($+)7ff0 linkw fp,#-4
  193.    00008004 ($+)7ff4 nop
  194.    00008006 ($+)7ff6 movel #99,d0
  195.    00008008 ($+)7ff8 cmpl fp@(-4),d0
  196.    0000800c ($+)7ffc blts 00008014 ($+)8004
  197.    0000800e ($+)7ffe addql #1,fp@(-4)
  198.    00008012 ($+)8002 bras 00008006 ($+)7ff6
  199.    00008014 ($+)8004 unlk fp
  200.    00008016 ($+)8006 rts
  201.    ...  */
  202.  
  203. static void
  204. tekhex_init (void)
  205. {
  206.   unsigned int i;
  207.   static bfd_boolean inited = FALSE;
  208.   int val;
  209.  
  210.   if (! inited)
  211.     {
  212.       inited = TRUE;
  213.       hex_init ();
  214.       val = 0;
  215.       for (i = 0; i < 10; i++)
  216.         sum_block[i + '0'] = val++;
  217.  
  218.       for (i = 'A'; i <= 'Z'; i++)
  219.         sum_block[i] = val++;
  220.  
  221.       sum_block['$'] = val++;
  222.       sum_block['%'] = val++;
  223.       sum_block['.'] = val++;
  224.       sum_block['_'] = val++;
  225.       for (i = 'a'; i <= 'z'; i++)
  226.         sum_block[i] = val++;
  227.     }
  228. }
  229.  
  230. /* The maximum number of bytes on a line is FF.  */
  231. #define MAXCHUNK 0xff
  232. /* The number of bytes we fit onto a line on output.  */
  233. #define CHUNK 21
  234.  
  235. /* We cannot output our tekhexords as we see them, we have to glue them
  236.    together, this is done in this structure : */
  237.  
  238. struct tekhex_data_list_struct
  239. {
  240.   unsigned char *data;
  241.   bfd_vma where;
  242.   bfd_size_type size;
  243.   struct tekhex_data_list_struct *next;
  244.  
  245. };
  246. typedef struct tekhex_data_list_struct tekhex_data_list_type;
  247.  
  248. #define CHUNK_MASK 0x1fff
  249. #define CHUNK_SPAN 32
  250.  
  251. struct data_struct
  252. {
  253.   unsigned char chunk_data[CHUNK_MASK + 1];
  254.   unsigned char chunk_init[(CHUNK_MASK + 1 + CHUNK_SPAN - 1) / CHUNK_SPAN];
  255.   bfd_vma vma;
  256.   struct data_struct *next;
  257. };
  258.  
  259. typedef struct tekhex_data_struct
  260. {
  261.   tekhex_data_list_type *head;
  262.   unsigned int type;
  263.   struct tekhex_symbol_struct *symbols;
  264.   struct data_struct *data;
  265. } tdata_type;
  266.  
  267. #define enda(x) (x->vma + x->size)
  268.  
  269. static bfd_boolean
  270. getvalue (char **srcp, bfd_vma *valuep, char * endp)
  271. {
  272.   char *src = *srcp;
  273.   bfd_vma value = 0;
  274.   unsigned int len;
  275.  
  276.   if (!ISHEX (*src))
  277.     return FALSE;
  278.  
  279.   len = hex_value (*src++);
  280.   if (len == 0)
  281.     len = 16;
  282.   while (len-- && src < endp)
  283.     {
  284.       if (!ISHEX (*src))
  285.         return FALSE;
  286.       value = value << 4 | hex_value (*src++);
  287.     }
  288.  
  289.   *srcp = src;
  290.   *valuep = value;
  291.   return len == -1U;
  292. }
  293.  
  294. static bfd_boolean
  295. getsym (char *dstp, char **srcp, unsigned int *lenp, char * endp)
  296. {
  297.   char *src = *srcp;
  298.   unsigned int i;
  299.   unsigned int len;
  300.  
  301.   if (!ISHEX (*src))
  302.     return FALSE;
  303.  
  304.   len = hex_value (*src++);
  305.   if (len == 0)
  306.     len = 16;
  307.   for (i = 0; i < len && src < endp; i++)
  308.     dstp[i] = src[i];
  309.   dstp[i] = 0;
  310.   *srcp = src + i;
  311.   *lenp = len;
  312.   return i == len;
  313. }
  314.  
  315. static struct data_struct *
  316. find_chunk (bfd *abfd, bfd_vma vma, bfd_boolean create)
  317. {
  318.   struct data_struct *d = abfd->tdata.tekhex_data->data;
  319.  
  320.   vma &= ~CHUNK_MASK;
  321.   while (d && (d->vma) != vma)
  322.     d = d->next;
  323.  
  324.   if (!d && create)
  325.     {
  326.       /* No chunk for this address, so make one up.  */
  327.       d = (struct data_struct *)
  328.           bfd_zalloc (abfd, (bfd_size_type) sizeof (struct data_struct));
  329.  
  330.       if (!d)
  331.         return NULL;
  332.  
  333.       d->next = abfd->tdata.tekhex_data->data;
  334.       d->vma = vma;
  335.       abfd->tdata.tekhex_data->data = d;
  336.     }
  337.   return d;
  338. }
  339.  
  340. static void
  341. insert_byte (bfd *abfd, int value, bfd_vma addr)
  342. {
  343.   if (value != 0)
  344.     {
  345.   /* Find the chunk that this byte needs and put it in.  */
  346.       struct data_struct *d = find_chunk (abfd, addr, TRUE);
  347.  
  348.   d->chunk_data[addr & CHUNK_MASK] = value;
  349.       d->chunk_init[(addr & CHUNK_MASK) / CHUNK_SPAN] = 1;
  350.     }
  351. }
  352.  
  353. /* The first pass is to find the names of all the sections, and see
  354.   how big the data is.  */
  355.  
  356. static bfd_boolean
  357. first_phase (bfd *abfd, int type, char *src, char * src_end)
  358. {
  359.   asection *section, *alt_section;
  360.   unsigned int len;
  361.   bfd_vma val;
  362.   char sym[17];                 /* A symbol can only be 16chars long.  */
  363.  
  364.   switch (type)
  365.     {
  366.     case '6':
  367.       /* Data record - read it and store it.  */
  368.       {
  369.         bfd_vma addr;
  370.  
  371.         if (!getvalue (&src, &addr, src_end))
  372.           return FALSE;
  373.  
  374.         while (*src && src < src_end - 1)
  375.           {
  376.             insert_byte (abfd, HEX (src), addr);
  377.             src += 2;
  378.             addr++;
  379.           }
  380.         return TRUE;
  381.       }
  382.  
  383.     case '3':
  384.       /* Symbol record, read the segment.  */
  385.       if (!getsym (sym, &src, &len, src_end))
  386.         return FALSE;
  387.       section = bfd_get_section_by_name (abfd, sym);
  388.       if (section == NULL)
  389.         {
  390.           char *n = (char *) bfd_alloc (abfd, (bfd_size_type) len + 1);
  391.  
  392.           if (!n)
  393.             return FALSE;
  394.           memcpy (n, sym, len + 1);
  395.           section = bfd_make_section (abfd, n);
  396.           if (section == NULL)
  397.             return FALSE;
  398.         }
  399.       alt_section = NULL;
  400.       while (src < src_end && *src)
  401.         {
  402.           switch (*src)
  403.             {
  404.             case '1':           /* Section range.  */
  405.               src++;
  406.               if (!getvalue (&src, &section->vma, src_end))
  407.                 return FALSE;
  408.               if (!getvalue (&src, &val, src_end))
  409.                 return FALSE;
  410.               if (val < section->vma)
  411.                 val = section->vma;
  412.               section->size = val - section->vma;
  413.               /* PR 17512: file: objdump-s-endless-loop.tekhex.
  414.                  Check for overlarge section sizes.  */
  415.               if (section->size & 0x80000000)
  416.                 return FALSE;
  417.               section->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
  418.               break;
  419.             case '0':
  420.             case '2':
  421.             case '3':
  422.             case '4':
  423.             case '6':
  424.             case '7':
  425.             case '8':
  426.               /* Symbols, add to section.  */
  427.               {
  428.                 bfd_size_type amt = sizeof (tekhex_symbol_type);
  429.                 tekhex_symbol_type *new_symbol = (tekhex_symbol_type *)
  430.                     bfd_alloc (abfd, amt);
  431.                 char stype = (*src);
  432.  
  433.                 if (!new_symbol)
  434.                   return FALSE;
  435.                 new_symbol->symbol.the_bfd = abfd;
  436.                 src++;
  437.                 abfd->symcount++;
  438.                 abfd->flags |= HAS_SYMS;
  439.                 new_symbol->prev = abfd->tdata.tekhex_data->symbols;
  440.                 abfd->tdata.tekhex_data->symbols = new_symbol;
  441.                 if (!getsym (sym, &src, &len, src_end))
  442.                   return FALSE;
  443.                 new_symbol->symbol.name = (const char *)
  444.                     bfd_alloc (abfd, (bfd_size_type) len + 1);
  445.                 if (!new_symbol->symbol.name)
  446.                   return FALSE;
  447.                 memcpy ((char *) (new_symbol->symbol.name), sym, len + 1);
  448.                 new_symbol->symbol.section = section;
  449.                 if (stype <= '4')
  450.                   new_symbol->symbol.flags = (BSF_GLOBAL | BSF_EXPORT);
  451.                 else
  452.                   new_symbol->symbol.flags = BSF_LOCAL;
  453.                 if (stype == '2' || stype == '6')
  454.                   new_symbol->symbol.section = bfd_abs_section_ptr;
  455.                 else if (stype == '3' || stype == '7')
  456.                   {
  457.                     if ((section->flags & SEC_DATA) == 0)
  458.                       section->flags |= SEC_CODE;
  459.                     else
  460.                       {
  461.                         if (alt_section == NULL)
  462.                           alt_section
  463.                             = bfd_get_next_section_by_name (NULL, section);
  464.                         if (alt_section == NULL)
  465.                           alt_section = bfd_make_section_anyway_with_flags
  466.                             (abfd, section->name,
  467.                              (section->flags & ~SEC_DATA) | SEC_CODE);
  468.                         if (alt_section == NULL)
  469.                           return FALSE;
  470.                         new_symbol->symbol.section = alt_section;
  471.                       }
  472.                   }
  473.                 else if (stype == '4' || stype == '8')
  474.                   {
  475.                     if ((section->flags & SEC_CODE) == 0)
  476.                       section->flags |= SEC_DATA;
  477.                     else
  478.                       {
  479.                         if (alt_section == NULL)
  480.                           alt_section
  481.                             = bfd_get_next_section_by_name (NULL, section);
  482.                         if (alt_section == NULL)
  483.                           alt_section = bfd_make_section_anyway_with_flags
  484.                             (abfd, section->name,
  485.                              (section->flags & ~SEC_CODE) | SEC_DATA);
  486.                         if (alt_section == NULL)
  487.                           return FALSE;
  488.                         new_symbol->symbol.section = alt_section;
  489.                       }
  490.                   }
  491.                 if (!getvalue (&src, &val, src_end))
  492.                   return FALSE;
  493.                 new_symbol->symbol.value = val - section->vma;
  494.                 break;
  495.               }
  496.             default:
  497.               return FALSE;
  498.             }
  499.         }
  500.     }
  501.  
  502.   return TRUE;
  503. }
  504.  
  505. /* Pass over a tekhex, calling one of the above functions on each
  506.    record.  */
  507.  
  508. static bfd_boolean
  509. pass_over (bfd *abfd, bfd_boolean (*func) (bfd *, int, char *, char *))
  510. {
  511.   unsigned int chars_on_line;
  512.   bfd_boolean is_eof = FALSE;
  513.  
  514.   /* To the front of the file.  */
  515.   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
  516.     return FALSE;
  517.   while (! is_eof)
  518.     {
  519.       char src[MAXCHUNK];
  520.       char type;
  521.  
  522.       /* Find first '%'.  */
  523.       is_eof = (bfd_boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1);
  524.       while (*src != '%' && !is_eof)
  525.         is_eof = (bfd_boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1);
  526.  
  527.       if (is_eof)
  528.         break;
  529.  
  530.       /* Fetch the type and the length and the checksum.  */
  531.       if (bfd_bread (src, (bfd_size_type) 5, abfd) != 5)
  532.         return FALSE;
  533.  
  534.       type = src[2];
  535.  
  536.       if (!ISHEX (src[0]) || !ISHEX (src[1]))
  537.         break;
  538.  
  539.       /* Already read five chars.  */
  540.       chars_on_line = HEX (src) - 5;
  541.  
  542.       if (chars_on_line >= MAXCHUNK)
  543.         return FALSE;
  544.  
  545.       if (bfd_bread (src, (bfd_size_type) chars_on_line, abfd) != chars_on_line)
  546.         return FALSE;
  547.  
  548.       /* Put a null at the end.  */
  549.       src[chars_on_line] = 0;
  550.       if (!func (abfd, type, src, src + chars_on_line))
  551.         return FALSE;
  552.     }
  553.  
  554.   return TRUE;
  555. }
  556.  
  557. static long
  558. tekhex_canonicalize_symtab (bfd *abfd, asymbol **table)
  559. {
  560.   tekhex_symbol_type *p = abfd->tdata.tekhex_data->symbols;
  561.   unsigned int c = bfd_get_symcount (abfd);
  562.  
  563.   table[c] = 0;
  564.   while (p)
  565.     {
  566.       table[--c] = &(p->symbol);
  567.       p = p->prev;
  568.     }
  569.  
  570.   return bfd_get_symcount (abfd);
  571. }
  572.  
  573. static long
  574. tekhex_get_symtab_upper_bound (bfd *abfd)
  575. {
  576.   return (abfd->symcount + 1) * (sizeof (struct tekhex_asymbol_struct *));
  577.  
  578. }
  579.  
  580. static bfd_boolean
  581. tekhex_mkobject (bfd *abfd)
  582. {
  583.   tdata_type *tdata;
  584.  
  585.   tdata = (tdata_type *) bfd_alloc (abfd, (bfd_size_type) sizeof (tdata_type));
  586.   if (!tdata)
  587.     return FALSE;
  588.   abfd->tdata.tekhex_data = tdata;
  589.   tdata->type = 1;
  590.   tdata->head =  NULL;
  591.   tdata->symbols = NULL;
  592.   tdata->data = NULL;
  593.   return TRUE;
  594. }
  595.  
  596. /* Return TRUE if the file looks like it's in TekHex format. Just look
  597.    for a percent sign and some hex digits.  */
  598.  
  599. static const bfd_target *
  600. tekhex_object_p (bfd *abfd)
  601. {
  602.   char b[4];
  603.  
  604.   tekhex_init ();
  605.  
  606.   if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
  607.       || bfd_bread (b, (bfd_size_type) 4, abfd) != 4)
  608.     return NULL;
  609.  
  610.   if (b[0] != '%' || !ISHEX (b[1]) || !ISHEX (b[2]) || !ISHEX (b[3]))
  611.     return NULL;
  612.  
  613.   tekhex_mkobject (abfd);
  614.  
  615.   if (!pass_over (abfd, first_phase))
  616.     return NULL;
  617.  
  618.   return abfd->xvec;
  619. }
  620.  
  621. static void
  622. move_section_contents (bfd *abfd,
  623.                        asection *section,
  624.                        const void * locationp,
  625.                        file_ptr offset,
  626.                        bfd_size_type count,
  627.                        bfd_boolean get)
  628. {
  629.   bfd_vma addr;
  630.   char *location = (char *) locationp;
  631.   bfd_vma prev_number = 1;      /* Nothing can have this as a high bit.  */
  632.   struct data_struct *d = NULL;
  633.  
  634.   BFD_ASSERT (offset == 0);
  635.   for (addr = section->vma; count != 0; count--, addr++)
  636.     {
  637.       /* Get high bits of address.  */
  638.       bfd_vma chunk_number = addr & ~(bfd_vma) CHUNK_MASK;
  639.       bfd_vma low_bits = addr & CHUNK_MASK;
  640.       bfd_boolean must_write = !get && *location != 0;
  641.  
  642.       if (chunk_number != prev_number || (!d && must_write))
  643.         {
  644.         /* Different chunk, so move pointer. */
  645.           d = find_chunk (abfd, chunk_number, must_write);
  646.           prev_number = chunk_number;
  647.         }
  648.  
  649.       if (get)
  650.         {
  651.           if (d)
  652.             *location = d->chunk_data[low_bits];
  653.           else
  654.             *location = 0;
  655.         }
  656.       else if (must_write)
  657.         {
  658.           d->chunk_data[low_bits] = *location;
  659.           d->chunk_init[low_bits / CHUNK_SPAN] = 1;
  660.         }
  661.  
  662.       location++;
  663.     }
  664. }
  665.  
  666. static bfd_boolean
  667. tekhex_get_section_contents (bfd *abfd,
  668.                              asection *section,
  669.                              void * locationp,
  670.                              file_ptr offset,
  671.                              bfd_size_type count)
  672. {
  673.   if (section->flags & (SEC_LOAD | SEC_ALLOC))
  674.     {
  675.       move_section_contents (abfd, section, locationp, offset, count, TRUE);
  676.       return TRUE;
  677.     }
  678.  
  679.   return FALSE;
  680. }
  681.  
  682. static bfd_boolean
  683. tekhex_set_arch_mach (bfd *abfd,
  684.                       enum bfd_architecture arch,
  685.                       unsigned long machine)
  686. {
  687.   /* Ignore errors about unknown architecture.  */
  688.   return (bfd_default_set_arch_mach (abfd, arch, machine)
  689.           || arch == bfd_arch_unknown);
  690. }
  691.  
  692. /* We have to save up all the Tekhexords for a splurge before output.  */
  693.  
  694. static bfd_boolean
  695. tekhex_set_section_contents (bfd *abfd,
  696.                              sec_ptr section,
  697.                              const void * locationp,
  698.                              file_ptr offset,
  699.                              bfd_size_type bytes_to_do)
  700. {
  701.   if (section->flags & (SEC_LOAD | SEC_ALLOC))
  702.     {
  703.       move_section_contents (abfd, section, locationp, offset, bytes_to_do,
  704.                              FALSE);
  705.       return TRUE;
  706.     }
  707.  
  708.   return FALSE;
  709. }
  710.  
  711. static void
  712. writevalue (char **dst, bfd_vma value)
  713. {
  714.   char *p = *dst;
  715.   int len;
  716.   int shift;
  717.  
  718.   for (len = 8, shift = 28; shift; shift -= 4, len--)
  719.     {
  720.       if ((value >> shift) & 0xf)
  721.         {
  722.           *p++ = len + '0';
  723.           while (len)
  724.             {
  725.               *p++ = digs[(value >> shift) & 0xf];
  726.               shift -= 4;
  727.               len--;
  728.             }
  729.           *dst = p;
  730.           return;
  731.  
  732.         }
  733.     }
  734.   *p++ = '1';
  735.   *p++ = '0';
  736.   *dst = p;
  737. }
  738.  
  739. static void
  740. writesym (char **dst, const char *sym)
  741. {
  742.   char *p = *dst;
  743.   int len = (sym ? strlen (sym) : 0);
  744.  
  745.   if (len >= 16)
  746.     {
  747.       *p++ = '0';
  748.       len = 16;
  749.     }
  750.   else
  751.     {
  752.       if (len == 0)
  753.         {
  754.           *p++ = '1';
  755.           sym = "$";
  756.           len = 1;
  757.         }
  758.       else
  759.         *p++ = digs[len];
  760.     }
  761.  
  762.   while (len--)
  763.     *p++ = *sym++;
  764.  
  765.   *dst = p;
  766. }
  767.  
  768. static void
  769. out (bfd *abfd, int type, char *start, char *end)
  770. {
  771.   int sum = 0;
  772.   char *s;
  773.   char front[6];
  774.   bfd_size_type wrlen;
  775.  
  776.   front[0] = '%';
  777.   TOHEX (front + 1, end - start + 5);
  778.   front[3] = type;
  779.  
  780.   for (s = start; s < end; s++)
  781.     sum += sum_block[(unsigned char) *s];
  782.  
  783.   sum += sum_block[(unsigned char) front[1]];   /* Length.  */
  784.   sum += sum_block[(unsigned char) front[2]];
  785.   sum += sum_block[(unsigned char) front[3]];   /* Type.  */
  786.   TOHEX (front + 4, sum);
  787.   if (bfd_bwrite (front, (bfd_size_type) 6, abfd) != 6)
  788.     abort ();
  789.   end[0] = '\n';
  790.   wrlen = end - start + 1;
  791.   if (bfd_bwrite (start, wrlen, abfd) != wrlen)
  792.     abort ();
  793. }
  794.  
  795. static bfd_boolean
  796. tekhex_write_object_contents (bfd *abfd)
  797. {
  798.   char buffer[100];
  799.   asymbol **p;
  800.   asection *s;
  801.   struct data_struct *d;
  802.  
  803.   tekhex_init ();
  804.  
  805.   /* And the raw data.  */
  806.   for (d = abfd->tdata.tekhex_data->data;
  807.        d != NULL;
  808.        d = d->next)
  809.     {
  810.       int low;
  811.       int addr;
  812.  
  813.       /* Write it in blocks of 32 bytes.  */
  814.       for (addr = 0; addr < CHUNK_MASK + 1; addr += CHUNK_SPAN)
  815.         {
  816.           if (d->chunk_init[addr / CHUNK_SPAN])
  817.             {
  818.               char *dst = buffer;
  819.  
  820.               writevalue (&dst, addr + d->vma);
  821.               for (low = 0; low < CHUNK_SPAN; low++)
  822.                 {
  823.                   TOHEX (dst, d->chunk_data[addr + low]);
  824.                   dst += 2;
  825.                 }
  826.               out (abfd, '6', buffer, dst);
  827.             }
  828.         }
  829.     }
  830.  
  831.   /* Write all the section headers for the sections.  */
  832.   for (s = abfd->sections; s != NULL; s = s->next)
  833.     {
  834.       char *dst = buffer;
  835.  
  836.       writesym (&dst, s->name);
  837.       *dst++ = '1';
  838.       writevalue (&dst, s->vma);
  839.       writevalue (&dst, s->vma + s->size);
  840.       out (abfd, '3', buffer, dst);
  841.     }
  842.  
  843.   /* And the symbols.  */
  844.   if (abfd->outsymbols)
  845.     {
  846.       for (p = abfd->outsymbols; *p; p++)
  847.         {
  848.           int section_code = bfd_decode_symclass (*p);
  849.  
  850.           if (section_code != '?')
  851.             {
  852.               /* Do not include debug symbols.  */
  853.               asymbol *sym = *p;
  854.               char *dst = buffer;
  855.  
  856.               writesym (&dst, sym->section->name);
  857.  
  858.               switch (section_code)
  859.                 {
  860.                 case 'A':
  861.                   *dst++ = '2';
  862.                   break;
  863.                 case 'a':
  864.                   *dst++ = '6';
  865.                   break;
  866.                 case 'D':
  867.                 case 'B':
  868.                 case 'O':
  869.                   *dst++ = '4';
  870.                   break;
  871.                 case 'd':
  872.                 case 'b':
  873.                 case 'o':
  874.                   *dst++ = '8';
  875.                   break;
  876.                 case 'T':
  877.                   *dst++ = '3';
  878.                   break;
  879.                 case 't':
  880.                   *dst++ = '7';
  881.                   break;
  882.                 case 'C':
  883.                 case 'U':
  884.                   bfd_set_error (bfd_error_wrong_format);
  885.                   return FALSE;
  886.                 }
  887.  
  888.               writesym (&dst, sym->name);
  889.               writevalue (&dst, sym->value + sym->section->vma);
  890.               out (abfd, '3', buffer, dst);
  891.             }
  892.         }
  893.     }
  894.  
  895.   /* And the terminator.  */
  896.   if (bfd_bwrite ("%0781010\n", (bfd_size_type) 9, abfd) != 9)
  897.     abort ();
  898.   return TRUE;
  899. }
  900.  
  901. static int
  902. tekhex_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
  903.                        struct bfd_link_info *info ATTRIBUTE_UNUSED)
  904. {
  905.   return 0;
  906. }
  907.  
  908. static asymbol *
  909. tekhex_make_empty_symbol (bfd *abfd)
  910. {
  911.   bfd_size_type amt = sizeof (struct tekhex_symbol_struct);
  912.   tekhex_symbol_type *new_symbol = (tekhex_symbol_type *) bfd_zalloc (abfd,
  913.                                                                       amt);
  914.  
  915.   if (!new_symbol)
  916.     return NULL;
  917.   new_symbol->symbol.the_bfd = abfd;
  918.   new_symbol->prev =  NULL;
  919.   return &(new_symbol->symbol);
  920. }
  921.  
  922. static void
  923. tekhex_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
  924.                         asymbol *symbol,
  925.                         symbol_info *ret)
  926. {
  927.   bfd_symbol_info (symbol, ret);
  928. }
  929.  
  930. static void
  931. tekhex_print_symbol (bfd *abfd,
  932.                      void * filep,
  933.                      asymbol *symbol,
  934.                      bfd_print_symbol_type how)
  935. {
  936.   FILE *file = (FILE *) filep;
  937.  
  938.   switch (how)
  939.     {
  940.     case bfd_print_symbol_name:
  941.       fprintf (file, "%s", symbol->name);
  942.       break;
  943.     case bfd_print_symbol_more:
  944.       break;
  945.  
  946.     case bfd_print_symbol_all:
  947.       {
  948.         const char *section_name = symbol->section->name;
  949.  
  950.         bfd_print_symbol_vandf (abfd, (void *) file, symbol);
  951.  
  952.         fprintf (file, " %-5s %s",
  953.                  section_name, symbol->name);
  954.       }
  955.     }
  956. }
  957.  
  958. #define tekhex_close_and_cleanup                    _bfd_generic_close_and_cleanup
  959. #define tekhex_bfd_free_cached_info                 _bfd_generic_bfd_free_cached_info
  960. #define tekhex_new_section_hook                     _bfd_generic_new_section_hook
  961. #define tekhex_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
  962. #define tekhex_bfd_is_local_label_name               bfd_generic_is_local_label_name
  963. #define tekhex_get_lineno                           _bfd_nosymbols_get_lineno
  964. #define tekhex_find_nearest_line                    _bfd_nosymbols_find_nearest_line
  965. #define tekhex_find_line                            _bfd_nosymbols_find_line
  966. #define tekhex_find_inliner_info                    _bfd_nosymbols_find_inliner_info
  967. #define tekhex_get_symbol_version_string            _bfd_nosymbols_get_symbol_version_string
  968. #define tekhex_bfd_make_debug_symbol                _bfd_nosymbols_bfd_make_debug_symbol
  969. #define tekhex_read_minisymbols                     _bfd_generic_read_minisymbols
  970. #define tekhex_minisymbol_to_symbol                 _bfd_generic_minisymbol_to_symbol
  971. #define tekhex_bfd_get_relocated_section_contents   bfd_generic_get_relocated_section_contents
  972. #define tekhex_bfd_relax_section                    bfd_generic_relax_section
  973. #define tekhex_bfd_gc_sections                      bfd_generic_gc_sections
  974. #define tekhex_bfd_lookup_section_flags             bfd_generic_lookup_section_flags
  975. #define tekhex_bfd_merge_sections                   bfd_generic_merge_sections
  976. #define tekhex_bfd_is_group_section                 bfd_generic_is_group_section
  977. #define tekhex_bfd_discard_group                    bfd_generic_discard_group
  978. #define tekhex_section_already_linked               _bfd_generic_section_already_linked
  979. #define tekhex_bfd_define_common_symbol             bfd_generic_define_common_symbol
  980. #define tekhex_bfd_link_hash_table_create           _bfd_generic_link_hash_table_create
  981. #define tekhex_bfd_link_add_symbols                 _bfd_generic_link_add_symbols
  982. #define tekhex_bfd_link_just_syms                   _bfd_generic_link_just_syms
  983. #define tekhex_bfd_copy_link_hash_symbol_type \
  984.   _bfd_generic_copy_link_hash_symbol_type
  985. #define tekhex_bfd_final_link                       _bfd_generic_final_link
  986. #define tekhex_bfd_link_split_section               _bfd_generic_link_split_section
  987. #define tekhex_get_section_contents_in_window       _bfd_generic_get_section_contents_in_window
  988.  
  989. const bfd_target tekhex_vec =
  990. {
  991.   "tekhex",                     /* Name.  */
  992.   bfd_target_tekhex_flavour,
  993.   BFD_ENDIAN_UNKNOWN,           /* Target byte order.  */
  994.   BFD_ENDIAN_UNKNOWN,           /* Target headers byte order.  */
  995.   (EXEC_P |                     /* Object flags.  */
  996.    HAS_SYMS | HAS_LINENO | HAS_DEBUG |
  997.    HAS_RELOC | HAS_LOCALS | WP_TEXT | D_PAGED),
  998.   (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
  999.    | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags.  */
  1000.   0,                            /* Leading underscore.  */
  1001.   ' ',                          /* AR_pad_char.  */
  1002.   16,                           /* AR_max_namelen.  */
  1003.   0,                            /* match priority.  */
  1004.   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
  1005.   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
  1006.   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Data.  */
  1007.   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
  1008.   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
  1009.   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Headers.  */
  1010.  
  1011.   {
  1012.     _bfd_dummy_target,
  1013.     tekhex_object_p,            /* bfd_check_format.  */
  1014.     _bfd_dummy_target,
  1015.     _bfd_dummy_target,
  1016.   },
  1017.   {
  1018.     bfd_false,
  1019.     tekhex_mkobject,
  1020.     _bfd_generic_mkarchive,
  1021.     bfd_false,
  1022.   },
  1023.   {                             /* bfd_write_contents.  */
  1024.     bfd_false,
  1025.     tekhex_write_object_contents,
  1026.     _bfd_write_archive_contents,
  1027.     bfd_false,
  1028.   },
  1029.  
  1030.   BFD_JUMP_TABLE_GENERIC (tekhex),
  1031.   BFD_JUMP_TABLE_COPY (_bfd_generic),
  1032.   BFD_JUMP_TABLE_CORE (_bfd_nocore),
  1033.   BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
  1034.   BFD_JUMP_TABLE_SYMBOLS (tekhex),
  1035.   BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
  1036.   BFD_JUMP_TABLE_WRITE (tekhex),
  1037.   BFD_JUMP_TABLE_LINK (tekhex),
  1038.   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
  1039.  
  1040.   NULL,
  1041.  
  1042.   NULL
  1043. };
  1044.