gcc/brig/brigspec.c

   1 /* brigspec.c -- Specific flags and argument handling of the gcc BRIG front end.
   2    Copyright (C) 2016-2017 Free Software Foundation, Inc.
   3    Contributed by Pekka Jaaskelainen <pekka.jaaskelainen@parmance.com>
   4    for General Processor Tech.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "tm.h"
  26 #include "gcc.h"
  27 #include "opts.h"
  28
  29 /* This bit is set if we saw a `-xfoo' language specification.  */
  30 #define LANGSPEC (1 << 1)
  31 /* This bit is set if they did `-lm' or `-lmath'.  */
  32 #define MATHLIB (1 << 2)
  33 /* This bit is set if they did `-lpthread'.  */
  34 #define THREADLIB (1 << 3)
  35 /* This bit is set if they did `-lc'.  */
  36 #define WITHLIBC (1 << 4)
  37 /* Skip this option.  */
  38 #define SKIPOPT (1 << 5)
  39
  40 #ifndef MATH_LIBRARY
  41 #define MATH_LIBRARY "m"
  42 #endif
  43 #ifndef MATH_LIBRARY_PROFILE
  44 #define MATH_LIBRARY_PROFILE MATH_LIBRARY
  45 #endif
  46
  47 #define LIBHSAIL "hsail-rt"
  48
  49 void
  50 lang_specific_driver (struct cl_decoded_option **in_decoded_options,
  51                       unsigned int *in_decoded_options_count,
  52                       int *in_added_libraries)
  53 {
  54   unsigned int i, j;
  55
  56   /* The new argument list will be contained in this.  */
  57   struct cl_decoded_option *new_decoded_options;
  58
  59   /* An array used to flag each argument that needs a bit set for
  60      LANGSPEC, MATHLIB, or WITHLIBC.  */
  61   int *args;
  62
  63   /* By default, we throw on the math library if we have one.  */
  64   int need_math = (MATH_LIBRARY[0] != '\0');
  65
  66   /* True if we should add -shared-libgcc to the command-line.  */
  67   int shared_libgcc = 1;
  68
  69   /* The total number of arguments with the new stuff.  */
  70   unsigned int argc;
  71
  72   /* The argument list.  */
  73   struct cl_decoded_option *decoded_options;
  74
  75   /* The number of libraries added in.  */
  76   int added_libraries;
  77
  78   /* The total number of arguments with the new stuff.  */
  79   int num_args = 1;
  80
  81   argc = *in_decoded_options_count;
  82   decoded_options = *in_decoded_options;
  83   added_libraries = *in_added_libraries;
  84
  85   args = XCNEWVEC (int, argc);
  86
  87   for (i = 1; i < argc; i++)
  88     {
  89       switch (decoded_options[i].opt_index)
  90         {
  91         case OPT_o:
  92           break;
  93
  94         case OPT_SPECIAL_input_file:
  95           break;
  96         }
  97     }
  98
  99   /* Make sure to have room for the trailing NULL argument.  */
 100   num_args = argc + need_math + shared_libgcc + 10;
 101   new_decoded_options = XNEWVEC (struct cl_decoded_option, num_args);
 102
 103   i = 0;
 104   j = 0;
 105
 106   /* Copy the 0th argument, i.e., the name of the program itself.  */
 107   new_decoded_options[j++] = decoded_options[i++];
 108
 109   /* NOTE: We start at 1 now, not 0.  */
 110   while (i < argc)
 111     {
 112       new_decoded_options[j] = decoded_options[i];
 113
 114       if ((args[i] & SKIPOPT) != 0)
 115         --j;
 116
 117       i++;
 118       j++;
 119     }
 120
 121   generate_option (OPT_l, LIBHSAIL, 1, CL_DRIVER, &new_decoded_options[j]);
 122   j++;
 123
 124   *in_decoded_options_count = j;
 125   *in_decoded_options = new_decoded_options;
 126   *in_added_libraries = added_libraries;
 127 }
 128
 129 /* Called before linking.  Returns 0 on success and -1 on failure.  */
 130
 131 int lang_specific_pre_link (void) /* Not used for Brig.  */ { return 0; }
 132
 133 /* Number of extra output files that lang_specific_pre_link may generate.  */
 134
 135 int lang_specific_extra_outfiles = 0; /* Not used for Brig.  */