gcc/brig/brigspec.c

   1 /* brigspec.c -- Specific flags and argument handling of the gcc BRIG front end.
   2    Copyright (C) 2016-2018 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 "opt-suggestions.h"
  27 #include "gcc.h"
  28 #include "opts.h"
  29
  30 /* This bit is set if we saw a `-xfoo' language specification.  */
  31 #define LANGSPEC (1 << 1)
  32 /* This bit is set if they did `-lm' or `-lmath'.  */
  33 #define MATHLIB (1 << 2)
  34 /* This bit is set if they did `-lpthread'.  */
  35 #define THREADLIB (1 << 3)
  36 /* This bit is set if they did `-lc'.  */
  37 #define WITHLIBC (1 << 4)
  38 /* Skip this option.  */
  39 #define SKIPOPT (1 << 5)
  40
  41 #ifndef MATH_LIBRARY
  42 #define MATH_LIBRARY "m"
  43 #endif
  44 #ifndef MATH_LIBRARY_PROFILE
  45 #define MATH_LIBRARY_PROFILE MATH_LIBRARY
  46 #endif
  47
  48 #define LIBHSAIL "hsail-rt"
  49
  50 void
  51 lang_specific_driver (struct cl_decoded_option **in_decoded_options,
  52                       unsigned int *in_decoded_options_count,
  53                       int *in_added_libraries)
  54 {
  55   unsigned int i, j;
  56
  57   /* The new argument list will be contained in this.  */
  58   struct cl_decoded_option *new_decoded_options;
  59
  60   /* An array used to flag each argument that needs a bit set for
  61      LANGSPEC, MATHLIB, or WITHLIBC.  */
  62   int *args;
  63
  64   /* By default, we throw on the math library if we have one.  */
  65   int need_math = (MATH_LIBRARY[0] != '\0');
  66
  67   /* True if we should add -shared-libgcc to the command-line.  */
  68   int shared_libgcc = 1;
  69
  70   /* The total number of arguments with the new stuff.  */
  71   unsigned int argc;
  72
  73   /* The argument list.  */
  74   struct cl_decoded_option *decoded_options;
  75
  76   /* The number of libraries added in.  */
  77   int added_libraries;
  78
  79   /* The total number of arguments with the new stuff.  */
  80   int num_args = 1;
  81
  82   argc = *in_decoded_options_count;
  83   decoded_options = *in_decoded_options;
  84   added_libraries = *in_added_libraries;
  85
  86   args = XCNEWVEC (int, argc);
  87
  88   for (i = 1; i < argc; i++)
  89     {
  90       switch (decoded_options[i].opt_index)
  91         {
  92         case OPT_o:
  93           break;
  94
  95         case OPT_SPECIAL_input_file:
  96           break;
  97         }
  98     }
  99
 100   /* Make sure to have room for the trailing NULL argument.  */
 101   num_args = argc + need_math + shared_libgcc + 10;
 102   new_decoded_options = XNEWVEC (struct cl_decoded_option, num_args);
 103
 104   i = 0;
 105   j = 0;
 106
 107   /* Copy the 0th argument, i.e., the name of the program itself.  */
 108   new_decoded_options[j++] = decoded_options[i++];
 109
 110   /* NOTE: We start at 1 now, not 0.  */
 111   while (i < argc)
 112     {
 113       new_decoded_options[j] = decoded_options[i];
 114
 115       if ((args[i] & SKIPOPT) != 0)
 116         --j;
 117
 118       i++;
 119       j++;
 120     }
 121
 122   generate_option (OPT_l, LIBHSAIL, 1, CL_DRIVER, &new_decoded_options[j]);
 123   j++;
 124
 125   *in_decoded_options_count = j;
 126   *in_decoded_options = new_decoded_options;
 127   *in_added_libraries = added_libraries;
 128 }
 129
 130 /* Called before linking.  Returns 0 on success and -1 on failure.  */
 131
 132 int lang_specific_pre_link (void) /* Not used for Brig.  */ { return 0; }
 133
 134 /* Number of extra output files that lang_specific_pre_link may generate.  */
 135
 136 int lang_specific_extra_outfiles = 0; /* Not used for Brig.  */