ld/emultempl/z80.em

   1 # This shell script emits C code -*- C -*-
   2 # to keep track of the machine type of Z80 object files
   3 # It does some substitutions.
   4 #   Copyright (C) 2005-2020 Free Software Foundation, Inc.
   5 # This file is part of the GNU Binutils.
   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 LDEMUL_BEFORE_PARSE=gldz80_before_parse
  23 LDEMUL_RECOGNIZED_FILE=gldz80_recognized_file
  24 LDEMUL_AFTER_OPEN=gldz80_after_open
  25
  26 fragment <<EOF
  27 /* --- \begin{z80.em} */
  28 /* Codes for machine types, bitwise or gives the code to use for the
  29    output.  */
  30 #define M_Z80STRICT 0x01
  31 #define M_Z80       0x03
  32 #define M_Z80FULL   0x07
  33 #define M_R800      0x10
  34 #define M_Z80ANY    0x0f
  35 #define M_GBZ80     0x20
  36 #define M_Z180      0x40
  37 #define M_EZ80_Z80  0x80
  38 #define M_EZ80_ADL  0x100
  39 #define M_ARCH_MASK 0xFF0
  40
  41 /* Bitwise or of the machine types seen so far.  */
  42 static int result_mach_type;
  43
  44 static void
  45 ${LDEMUL_BEFORE_PARSE} (void)
  46 {
  47 #ifndef TARGET_                 /* I.e., if not generic.  */
  48   ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
  49 #endif /* not TARGET_ */
  50   result_mach_type = 0;
  51 }
  52
  53
  54 /* Update result_mach_type.  */
  55 static bfd_boolean
  56 ${LDEMUL_RECOGNIZED_FILE} (lang_input_statement_type *entry)
  57 {
  58   unsigned long mach_type;
  59
  60   mach_type = bfd_get_mach (entry->the_bfd);
  61   switch (mach_type)
  62     {
  63     case bfd_mach_z80strict:
  64       result_mach_type |= M_Z80STRICT;
  65       break;
  66     case bfd_mach_z80:
  67       result_mach_type |= M_Z80;
  68       break;
  69     case bfd_mach_z80full:
  70       result_mach_type |= M_Z80FULL;
  71       break;
  72     case bfd_mach_r800:
  73       result_mach_type |= M_R800;
  74       break;
  75     case bfd_mach_gbz80:
  76       result_mach_type |= M_GBZ80;
  77       break;
  78     case bfd_mach_z180:
  79       result_mach_type |= M_Z180;
  80       break;
  81     case bfd_mach_ez80_z80:
  82       result_mach_type |= M_EZ80_Z80;
  83       break;
  84     case bfd_mach_ez80_adl:
  85       result_mach_type |= M_EZ80_ADL;
  86       break;
  87     default:
  88       einfo (_("%P: warning: unknown machine type %u"), (unsigned)mach_type);
  89       result_mach_type |= M_Z80ANY;
  90     }
  91   return FALSE;
  92 }
  93
  94 /* Set the machine type of the output file based on result_mach_type.  */
  95 static void
  96 gldz80_after_open (void)
  97 {
  98   unsigned long mach_type;
  99
 100   after_open_default ();
 101
 102   switch (result_mach_type & M_ARCH_MASK)
 103     {
 104     case M_Z80 & M_ARCH_MASK:
 105     case M_R800:
 106     case M_Z180:
 107     case M_GBZ80:
 108     case M_EZ80_Z80:
 109     case M_EZ80_ADL:
 110     case M_EZ80_Z80 | M_Z180:
 111       /* valid combination */
 112       break;
 113     case M_EZ80_Z80 | M_EZ80_ADL:
 114     case M_EZ80_Z80 | M_EZ80_ADL | M_Z180:
 115     case M_EZ80_ADL | M_Z180:
 116       /* combination may cause invalid objdump output */
 117       /* but it is possible for mixed ADL/Z80 code */
 118       einfo (_("%P: warning: mixing ADL and Z80 mode binaries, objdump may generate invalid output"));
 119       break;
 120     default:
 121       /* invalid combination: for example Z180 + R800 */
 122       einfo (_("%P: warning: incompatible object files linked, result code might not work"));
 123     }
 124
 125   if ((result_mach_type & M_EZ80_ADL) == M_EZ80_ADL)
 126     mach_type = bfd_mach_ez80_adl;
 127   else if ((result_mach_type & M_EZ80_Z80) == M_EZ80_Z80)
 128     mach_type = bfd_mach_ez80_z80;
 129   else if ((result_mach_type & M_Z180) == M_Z180)
 130     mach_type = bfd_mach_z180;
 131   else if ((result_mach_type & M_R800) == M_R800)
 132     mach_type = bfd_mach_r800;
 133   else if ((result_mach_type & M_GBZ80) == M_GBZ80)
 134     mach_type = bfd_mach_gbz80;
 135   else if ((result_mach_type & M_Z80FULL) == M_Z80FULL)
 136     mach_type = bfd_mach_z80full; /* TODO: remove it */
 137   else if ((result_mach_type & M_Z80) == M_Z80)
 138     mach_type = bfd_mach_z80;
 139   else if ((result_mach_type & M_Z80STRICT) == M_Z80STRICT)
 140     mach_type = bfd_mach_z80strict; /* TODO: remove this */
 141   else
 142     mach_type = bfd_arch_unknown;
 143
 144   bfd_set_arch_mach (link_info.output_bfd, bfd_arch_z80, mach_type);
 145 }
 146 /* --- \end{z80.em} */
 147 EOF