output/legacy.c

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2016 The NASM Authors - All Rights Reserved
   4  *   See the file AUTHORS included with the NASM distribution for
   5  *   the specific copyright holders.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following
   9  *   conditions are met:
  10  *
  11  *   * Redistributions of source code must retain the above copyright
  12  *     notice, this list of conditions and the following disclaimer.
  13  *   * Redistributions in binary form must reproduce the above
  14  *     copyright notice, this list of conditions and the following
  15  *     disclaimer in the documentation and/or other materials provided
  16  *     with the distribution.
  17  *
  18  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  19  *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  20  *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  21  *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22  *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  23  *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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  29  *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  30  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * ----------------------------------------------------------------------- */
  33
  34 /*
  35  * output/legacy.c
  36  *
  37  * Mangle a struct out_data to match the rather bizarre legacy
  38  * backend interface.
  39  */
  40
  41 #include "nasm.h"
  42
  43 void nasm_do_legacy_output(const struct out_data *data)
  44 {
  45     const void *dptr = data->data;
  46     enum out_type type = data->type;
  47     int32_t tsegment = data->tsegment;
  48     int32_t twrt = data->twrt;
  49     uint64_t size = data->size;
  50
  51     switch (data->type) {
  52     case OUT_RELADDR:
  53         switch (data->size) {
  54         case 1:
  55             type = OUT_REL1ADR;
  56             break;
  57         case 2:
  58             type = OUT_REL2ADR;
  59             break;
  60         case 4:
  61             type = OUT_REL4ADR;
  62             break;
  63         case 8:
  64             type = OUT_REL8ADR;
  65             break;
  66         default:
  67             panic();
  68             break;
  69         }
  70
  71         dptr = &data->toffset;
  72         size = data->inslen - data->insoffs;
  73         break;
  74
  75     case OUT_SEGMENT:
  76         type = OUT_ADDRESS;
  77         /* fall through */
  78
  79     case OUT_ADDRESS:
  80         dptr = &data->toffset;
  81         size = (data->sign == OUT_SIGNED) ? -data->size : data->size;
  82         break;
  83
  84     case OUT_RAWDATA:
  85     case OUT_RESERVE:
  86         tsegment = twrt = NO_SEG;
  87         break;
  88
  89     default:
  90         panic();
  91         break;
  92     }
  93
  94     ofmt->legacy_output(data->segment, dptr, type, size, tsegment, twrt);
  95 }