gcc/libfuncs.h

   1 /* Definitions for code generation pass of GNU compiler.
   2    Copyright (C) 2001, 2004, 2007, 2008, 2010 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef GCC_LIBFUNCS_H
  21 #define GCC_LIBFUNCS_H
  22
  23 #include "hashtab.h"
  24
  25 /* Enumeration of indexes into libfunc_table.  */
  26 enum libfunc_index
  27 {
  28   LTI_abort,
  29   LTI_memcpy,
  30   LTI_memmove,
  31   LTI_memcmp,
  32   LTI_memset,
  33   LTI_setbits,
  34
  35   LTI_setjmp,
  36   LTI_longjmp,
  37   LTI_unwind_sjlj_register,
  38   LTI_unwind_sjlj_unregister,
  39
  40   LTI_profile_function_entry,
  41   LTI_profile_function_exit,
  42
  43   LTI_synchronize,
  44
  45   LTI_gcov_flush,
  46
  47   LTI_MAX
  48 };
  49
  50 /* Information about an optab-related libfunc.  We use the same hashtable
  51    for normal optabs and conversion optabs.  In the first case mode2
  52    is unused.  */
  53 struct GTY(()) libfunc_entry {
  54   size_t optab;
  55   enum machine_mode mode1, mode2;
  56   rtx libfunc;
  57 };
  58
  59 /* Target-dependent globals.  */
  60 struct GTY(()) target_libfuncs {
  61   /* SYMBOL_REF rtx's for the library functions that are called
  62      implicitly and not via optabs.  */
  63   rtx x_libfunc_table[LTI_MAX];
  64
  65   /* Hash table used to convert declarations into nodes.  */
  66   htab_t GTY((param_is (struct libfunc_entry))) x_libfunc_hash;
  67 };
  68
  69 extern GTY(()) struct target_libfuncs default_target_libfuncs;
  70 #if SWITCHABLE_TARGET
  71 extern struct target_libfuncs *this_target_libfuncs;
  72 #else
  73 #define this_target_libfuncs (&default_target_libfuncs)
  74 #endif
  75
  76 #define libfunc_table \
  77   (this_target_libfuncs->x_libfunc_table)
  78
  79 /* Accessor macros for libfunc_table.  */
  80
  81 #define abort_libfunc   (libfunc_table[LTI_abort])
  82 #define memcpy_libfunc  (libfunc_table[LTI_memcpy])
  83 #define memmove_libfunc (libfunc_table[LTI_memmove])
  84 #define memcmp_libfunc  (libfunc_table[LTI_memcmp])
  85 #define memset_libfunc  (libfunc_table[LTI_memset])
  86 #define setbits_libfunc (libfunc_table[LTI_setbits])
  87
  88 #define setjmp_libfunc  (libfunc_table[LTI_setjmp])
  89 #define longjmp_libfunc (libfunc_table[LTI_longjmp])
  90 #define unwind_sjlj_register_libfunc (libfunc_table[LTI_unwind_sjlj_register])
  91 #define unwind_sjlj_unregister_libfunc \
  92   (libfunc_table[LTI_unwind_sjlj_unregister])
  93
  94 #define profile_function_entry_libfunc  (libfunc_table[LTI_profile_function_entry])
  95 #define profile_function_exit_libfunc   (libfunc_table[LTI_profile_function_exit])
  96
  97 #define synchronize_libfunc     (libfunc_table[LTI_synchronize])
  98
  99 #define gcov_flush_libfunc      (libfunc_table[LTI_gcov_flush])
 100
 101 /* In explow.c */
 102 extern void set_stack_check_libfunc (const char *);
 103
 104 #endif /* GCC_LIBFUNCS_H */