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