gcc/rtl-error.c

   1 /* RTL specific diagnostic subroutines for GCC
   2    Copyright (C) 2001-2015 Free Software Foundation, Inc.
   3    Contributed by Gabriel Dos Reis <gdr@codesourcery.com>
   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 "rtl-error.h"
  26 #include "insn-attr.h"
  27 #include "insn-config.h"
  28 #include "input.h"
  29 #include "intl.h"
  30 #include "diagnostic.h"
  31
  32 static location_t location_for_asm (const rtx_insn *);
  33 static void diagnostic_for_asm (const rtx_insn *, const char *, va_list *,
  34                                 diagnostic_t) ATTRIBUTE_GCC_DIAG(2,0);
  35
  36 /* Figure the location of the given INSN.  */
  37 static location_t
  38 location_for_asm (const rtx_insn *insn)
  39 {
  40   rtx body = PATTERN (insn);
  41   rtx asmop;
  42   location_t loc;
  43
  44   /* Find the (or one of the) ASM_OPERANDS in the insn.  */
  45   if (GET_CODE (body) == SET && GET_CODE (SET_SRC (body)) == ASM_OPERANDS)
  46     asmop = SET_SRC (body);
  47   else if (GET_CODE (body) == ASM_OPERANDS)
  48     asmop = body;
  49   else if (GET_CODE (body) == PARALLEL
  50            && GET_CODE (XVECEXP (body, 0, 0)) == SET)
  51     asmop = SET_SRC (XVECEXP (body, 0, 0));
  52   else if (GET_CODE (body) == PARALLEL
  53            && GET_CODE (XVECEXP (body, 0, 0)) == ASM_OPERANDS)
  54     asmop = XVECEXP (body, 0, 0);
  55   else
  56     asmop = NULL;
  57
  58   if (asmop)
  59     loc = ASM_OPERANDS_SOURCE_LOCATION (asmop);
  60   else
  61     loc = input_location;
  62   return loc;
  63 }
  64
  65 /* Report a diagnostic MESSAGE (an error or a WARNING) at the line number
  66    of the insn INSN.  This is used only when INSN is an `asm' with operands,
  67    and each ASM_OPERANDS records its own source file and line.  */
  68 static void
  69 diagnostic_for_asm (const rtx_insn *insn, const char *msg, va_list *args_ptr,
  70                     diagnostic_t kind)
  71 {
  72   diagnostic_info diagnostic;
  73
  74   diagnostic_set_info (&diagnostic, msg, args_ptr,
  75                        location_for_asm (insn), kind);
  76   report_diagnostic (&diagnostic);
  77 }
  78
  79 void
  80 error_for_asm (const rtx_insn *insn, const char *gmsgid, ...)
  81 {
  82   va_list ap;
  83
  84   va_start (ap, gmsgid);
  85   diagnostic_for_asm (insn, gmsgid, &ap, DK_ERROR);
  86   va_end (ap);
  87 }
  88
  89 void
  90 warning_for_asm (const rtx_insn *insn, const char *gmsgid, ...)
  91 {
  92   va_list ap;
  93
  94   va_start (ap, gmsgid);
  95   diagnostic_for_asm (insn, gmsgid, &ap, DK_WARNING);
  96   va_end (ap);
  97 }
  98
  99 void
 100 _fatal_insn (const char *msgid, const_rtx insn, const char *file, int line,
 101              const char *function)
 102 {
 103   error ("%s", _(msgid));
 104
 105   /* The above incremented error_count, but isn't an error that we want to
 106      count, so reset it here.  */
 107   errorcount--;
 108
 109   debug_rtx (insn);
 110   fancy_abort (file, line, function);
 111 }
 112
 113 void
 114 _fatal_insn_not_found (const_rtx insn, const char *file, int line,
 115                        const char *function)
 116 {
 117   if (INSN_CODE (insn) < 0)
 118     _fatal_insn ("unrecognizable insn:", insn, file, line, function);
 119   else
 120     _fatal_insn ("insn does not satisfy its constraints:",
 121                 insn, file, line, function);
 122 }