gcc/config/avr/driver-avr.c

   1 /* Subroutines for the gcc driver.
   2    Copyright (C) 2009 Free Software Foundation, Inc.
   3    Contributed by Anatoly Sokolov <aesok@post.ru>
   4
   5 This file is part of GCC.
   6
   7 GCC 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, or (at your option)
  10 any later version.
  11
  12 GCC 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 GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #include "config.h"
  22 #include "system.h"
  23 #include "coretypes.h"
  24 #include "tm.h"
  25 #include <stdlib.h>
  26
  27 /* Current architecture.  */
  28 const struct base_arch_s *avr_current_arch = NULL;
  29
  30 /* Current device.  */
  31 const struct mcu_type_s *avr_current_device = NULL;
  32
  33 /* Initialize avr_current_arch and avr_current_device variables.  */
  34
  35 static void
  36 avr_set_current_device (const char *name)
  37 {
  38
  39  if (NULL != avr_current_arch)
  40    return;
  41
  42   for (avr_current_device = avr_mcu_types; avr_current_device->name;
  43        avr_current_device++)
  44     {
  45       if (strcmp (avr_current_device->name, name) == 0)
  46         break;
  47     }
  48
  49   avr_current_arch = &avr_arch_types[avr_current_device->arch];
  50 }
  51
  52 /* Returns command line parameters that describe the device architecture.  */
  53
  54 const char *
  55 avr_device_to_arch (int argc, const char **argv)
  56 {
  57   if (0 == argc)
  58     return;
  59
  60   avr_set_current_device (argv[0]);
  61
  62   return concat ("-m ", avr_current_arch->arch_name, NULL);
  63 }
  64
  65 /* Returns command line parameters that describe start of date section.  */
  66
  67 const char *
  68 avr_device_to_data_start (int argc, const char **argv)
  69 {
  70   unsigned long data_section_start;
  71   char data_section_start_str[16];
  72
  73   if (0 == argc)
  74     return;
  75
  76   avr_set_current_device (argv[0]);
  77
  78   if (avr_current_device->data_section_start
  79       == avr_current_arch->default_data_section_start)
  80     return NULL;
  81
  82   data_section_start = 0x800000 + avr_current_device->data_section_start;
  83
  84   snprintf (data_section_start_str, sizeof(data_section_start_str) - 1,
  85             "0x%lX", data_section_start);
  86
  87   return concat ("-Tdata ", data_section_start_str, NULL);
  88 }
  89
  90 /* Returns command line parameters that describe the device startfile.  */
  91
  92 const char *
  93 avr_device_to_startfiles (int argc, const char **argv)
  94 {
  95   if (0 == argc)
  96     return;
  97
  98   avr_set_current_device (argv[0]);
  99
 100   return concat ("crt", avr_current_device->library_name, ".o%s", NULL);
 101 }
 102
 103 /* Returns command line parameters that describe the device library.  */
 104
 105 const char *
 106 avr_device_to_devicelib (int argc, const char **argv)
 107 {
 108   if (0 == argc)
 109     return;
 110
 111   avr_set_current_device (argv[0]);
 112
 113   return concat ("-l", avr_current_device->library_name, NULL);
 114 }
 115