gcc/config/avr/driver-avr.c

   1 /* Subroutines for the gcc driver.
   2    Copyright (C) 2009, 2010, 2011, 2012 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
  26 /* Current architecture.  */
  27 const struct base_arch_s *avr_current_arch = NULL;
  28
  29 /* Current device.  */
  30 const struct mcu_type_s *avr_current_device = NULL;
  31
  32 /* Initialize avr_current_arch and avr_current_device variables.  */
  33
  34 static void
  35 avr_set_current_device (const char *name)
  36 {
  37
  38  if (NULL != avr_current_arch)
  39    return;
  40
  41   for (avr_current_device = avr_mcu_types; avr_current_device->name;
  42        avr_current_device++)
  43     {
  44       if (strcmp (avr_current_device->name, name) == 0)
  45         break;
  46     }
  47
  48   avr_current_arch = &avr_arch_types[avr_current_device->arch];
  49 }
  50
  51 /* Returns command line parameters that describe the device architecture.  */
  52
  53 const char *
  54 avr_device_to_arch (int argc, const char **argv)
  55 {
  56   if (0 == argc)
  57     return NULL;
  58
  59   avr_set_current_device (argv[0]);
  60
  61   return concat ("-m ", avr_current_arch->arch_name, NULL);
  62 }
  63
  64 /* Returns command line parameters that describe start of date section.  */
  65
  66 const char *
  67 avr_device_to_data_start (int argc, const char **argv)
  68 {
  69   unsigned long data_section_start;
  70   char data_section_start_str[16];
  71
  72   if (0 == argc)
  73     return NULL;
  74
  75   avr_set_current_device (argv[0]);
  76
  77   if (avr_current_device->data_section_start
  78       == avr_current_arch->default_data_section_start)
  79     return NULL;
  80
  81   data_section_start = 0x800000 + avr_current_device->data_section_start;
  82
  83   snprintf (data_section_start_str, sizeof(data_section_start_str) - 1,
  84             "0x%lX", data_section_start);
  85
  86   return concat ("-Tdata ", data_section_start_str, NULL);
  87 }
  88
  89 /* Returns command line parameters that describe the device startfile.  */
  90
  91 const char *
  92 avr_device_to_startfiles (int argc, const char **argv)
  93 {
  94   if (0 == argc)
  95     return NULL;
  96
  97   avr_set_current_device (argv[0]);
  98
  99   return concat ("crt", avr_current_device->library_name, ".o%s", NULL);
 100 }
 101
 102 /* Returns command line parameters that describe the device library.  */
 103
 104 const char *
 105 avr_device_to_devicelib (int argc, const char **argv)
 106 {
 107   if (0 == argc)
 108     return NULL;
 109
 110   avr_set_current_device (argv[0]);
 111
 112   return concat ("-l", avr_current_device->library_name, NULL);
 113 }
 114
 115 const char*
 116 avr_device_to_sp8 (int argc, const char **argv)
 117 {
 118   if (0 == argc)
 119     return NULL;
 120
 121   avr_set_current_device (argv[0]);
 122
 123   /* Leave "avr2" and "avr25" alone.  These two architectures are
 124      the only ones that mix devices with 8-bit SP and 16-bit SP.
 125      -msp8 is set by mmultilib machinery.  */
 126
 127   if (avr_current_device->macro == NULL
 128       && (avr_current_device->arch == ARCH_AVR2
 129           || avr_current_device->arch == ARCH_AVR25))
 130     return "";
 131
 132   return avr_current_device->short_sp
 133     ? "-msp8"
 134     : "%<msp8";
 135 }