gcc/rtl-error.c

   1 /* RTL specific diagnostic subroutines for GCC
   2    Copyright (C) 2001-2018 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 "diagnostic.h"
  27 #include "intl.h"
  28
  29 static location_t location_for_asm (const rtx_insn *);
  30 static void diagnostic_for_asm (const rtx_insn *, const char *, va_list *,
  31                                 diagnostic_t) ATTRIBUTE_GCC_DIAG(2,0);
  32
  33 /* Figure the location of the given INSN.  */
  34 static location_t
  35 location_for_asm (const rtx_insn *insn)
  36 {
  37   rtx body = PATTERN (insn);
  38   rtx asmop;
  39   location_t loc;
  40
  41   /* Find the (or one of the) ASM_OPERANDS in the insn.  */
  42   if (GET_CODE (body) == SET && GET_CODE (SET_SRC (body)) == ASM_OPERANDS)
  43     asmop = SET_SRC (body);
  44   else if (GET_CODE (body) == ASM_OPERANDS)
  45     asmop = body;
  46   else if (GET_CODE (body) == PARALLEL
  47            && GET_CODE (XVECEXP (body, 0, 0)) == SET)
  48     asmop = SET_SRC (XVECEXP (body, 0, 0));
  49   else if (GET_CODE (body) == PARALLEL
  50            && GET_CODE (XVECEXP (body, 0, 0)) == ASM_OPERANDS)
  51     asmop = XVECEXP (body, 0, 0);
  52   else
  53     asmop = NULL;
  54
  55   if (asmop)
  56     loc = ASM_OPERANDS_SOURCE_LOCATION (asmop);
  57   else
  58     loc = input_location;
  59   return loc;
  60 }
  61
  62 /* Report a diagnostic MESSAGE (an error or a WARNING) at the line number
  63    of the insn INSN.  This is used only when INSN is an `asm' with operands,
  64    and each ASM_OPERANDS records its own source file and line.  */
  65 static void
  66 diagnostic_for_asm (const rtx_insn *insn, const char *msg, va_list *args_ptr,
  67                     diagnostic_t kind)
  68 {
  69   diagnostic_info diagnostic;
  70   rich_location richloc (line_table, location_for_asm (insn));
  71
  72   diagnostic_set_info (&diagnostic, msg, args_ptr,
  73                        &richloc, kind);
  74   diagnostic_report_diagnostic (global_dc, &diagnostic);
  75 }
  76
  77 void
  78 error_for_asm (const rtx_insn *insn, const char *gmsgid, ...)
  79 {
  80   va_list ap;
  81
  82   va_start (ap, gmsgid);
  83   diagnostic_for_asm (insn, gmsgid, &ap, DK_ERROR);
  84   va_end (ap);
  85 }
  86
  87 void
  88 warning_for_asm (const rtx_insn *insn, const char *gmsgid, ...)
  89 {
  90   va_list ap;
  91
  92   va_start (ap, gmsgid);
  93   diagnostic_for_asm (insn, gmsgid, &ap, DK_WARNING);
  94   va_end (ap);
  95 }
  96
  97 void
  98 _fatal_insn (const char *msgid, const_rtx insn, const char *file, int line,
  99              const char *function)
 100 {
 101   error ("%s", _(msgid));
 102
 103   /* The above incremented error_count, but isn't an error that we want to
 104      count, so reset it here.  */
 105   errorcount--;
 106
 107   debug_rtx (insn);
 108   fancy_abort (file, line, function);
 109 }
 110
 111 void
 112 _fatal_insn_not_found (const_rtx insn, const char *file, int line,
 113                        const char *function)
 114 {
 115   if (INSN_CODE (insn) < 0)
 116     _fatal_insn ("unrecognizable insn:", insn, file, line, function);
 117   else
 118     _fatal_insn ("insn does not satisfy its constraints:",
 119                 insn, file, line, function);
 120 }