gcc/coretypes.h

   1 /* GCC core type declarations.
   2    Copyright (C) 2002-2014 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 it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 Under Section 7 of GPL version 3, you are granted additional
  17 permissions described in the GCC Runtime Library Exception, version
  18 3.1, as published by the Free Software Foundation.
  19
  20 You should have received a copy of the GNU General Public License and
  21 a copy of the GCC Runtime Library Exception along with this program;
  22 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 <http://www.gnu.org/licenses/>.  */
  24
  25 /* Provide forward declarations of core types which are referred to by
  26    most of the compiler.  This allows header files to use these types
  27    (e.g. in function prototypes) without concern for whether the full
  28    definitions are visible.  Some other declarations that need to be
  29    universally visible are here, too.
  30
  31    In the context of tconfig.h, most of these have special definitions
  32    which prevent them from being used except in further type
  33    declarations.  This is a kludge; the right thing is to avoid
  34    including the "tm.h" header set in the context of tconfig.h, but
  35    we're not there yet.  */
  36
  37 #ifndef GCC_CORETYPES_H
  38 #define GCC_CORETYPES_H
  39
  40 #ifndef GTY
  41 #define GTY(x)  /* nothing - marker for gengtype */
  42 #endif
  43
  44 #ifndef USED_FOR_TARGET
  45
  46 typedef HOST_WIDEST_INT gcov_type;
  47 typedef unsigned HOST_WIDEST_INT gcov_type_unsigned;
  48
  49 struct bitmap_head;
  50 typedef struct bitmap_head *bitmap;
  51 typedef const struct bitmap_head *const_bitmap;
  52 struct simple_bitmap_def;
  53 typedef struct simple_bitmap_def *sbitmap;
  54 typedef const struct simple_bitmap_def *const_sbitmap;
  55 struct rtx_def;
  56 typedef struct rtx_def *rtx;
  57 typedef const struct rtx_def *const_rtx;
  58 struct rtvec_def;
  59 typedef struct rtvec_def *rtvec;
  60 typedef const struct rtvec_def *const_rtvec;
  61 union tree_node;
  62 typedef union tree_node *tree;
  63 typedef const union tree_node *const_tree;
  64 typedef struct gimple_statement_base *gimple;
  65 typedef const struct gimple_statement_base *const_gimple;
  66 typedef gimple gimple_seq;
  67 struct gimple_stmt_iterator;
  68 union section;
  69 typedef union section section;
  70 struct gcc_options;
  71 struct cl_target_option;
  72 struct cl_optimization;
  73 struct cl_option;
  74 struct cl_decoded_option;
  75 struct cl_option_handlers;
  76 struct diagnostic_context;
  77 struct pretty_printer;
  78
  79 /* Address space number for named address space support.  */
  80 typedef unsigned char addr_space_t;
  81
  82 /* The value of addr_space_t that represents the generic address space.  */
  83 #define ADDR_SPACE_GENERIC 0
  84 #define ADDR_SPACE_GENERIC_P(AS) ((AS) == ADDR_SPACE_GENERIC)
  85
  86 /* The major intermediate representations of GCC.  */
  87 enum ir_type {
  88   IR_GIMPLE,
  89   IR_RTL_CFGRTL,
  90   IR_RTL_CFGLAYOUT
  91 };
  92
  93 /* Provide forward struct declaration so that we don't have to include
  94    all of cpplib.h whenever a random prototype includes a pointer.
  95    Note that the cpp_reader and cpp_token typedefs remain part of
  96    cpplib.h.  */
  97
  98 struct cpp_reader;
  99 struct cpp_token;
 100
 101 /* The thread-local storage model associated with a given VAR_DECL
 102    or SYMBOL_REF.  This isn't used much, but both trees and RTL refer
 103    to it, so it's here.  */
 104 enum tls_model {
 105   TLS_MODEL_NONE,
 106   TLS_MODEL_EMULATED,
 107   TLS_MODEL_REAL,
 108   TLS_MODEL_GLOBAL_DYNAMIC = TLS_MODEL_REAL,
 109   TLS_MODEL_LOCAL_DYNAMIC,
 110   TLS_MODEL_INITIAL_EXEC,
 111   TLS_MODEL_LOCAL_EXEC
 112 };
 113
 114 /* Types of unwind/exception handling info that can be generated.  */
 115
 116 enum unwind_info_type
 117 {
 118   UI_NONE,
 119   UI_SJLJ,
 120   UI_DWARF2,
 121   UI_TARGET,
 122   UI_SEH
 123 };
 124
 125 /* Callgraph node profile representation.  */
 126 enum node_frequency {
 127   /* This function most likely won't be executed at all.
 128      (set only when profile feedback is available or via function attribute). */
 129   NODE_FREQUENCY_UNLIKELY_EXECUTED,
 130   /* For functions that are known to be executed once (i.e. constructors, destructors
 131      and main function.  */
 132   NODE_FREQUENCY_EXECUTED_ONCE,
 133   /* The default value.  */
 134   NODE_FREQUENCY_NORMAL,
 135   /* Optimize this function hard
 136      (set only when profile feedback is available or via function attribute). */
 137   NODE_FREQUENCY_HOT
 138 };
 139
 140 /* Possible initialization status of a variable.   When requested
 141    by the user, this information is tracked and recorded in the DWARF
 142    debug information, along with the variable's location.  */
 143 enum var_init_status
 144 {
 145   VAR_INIT_STATUS_UNKNOWN,
 146   VAR_INIT_STATUS_UNINITIALIZED,
 147   VAR_INIT_STATUS_INITIALIZED
 148 };
 149
 150
 151 struct edge_def;
 152 typedef struct edge_def *edge;
 153 typedef const struct edge_def *const_edge;
 154 struct basic_block_def;
 155 typedef struct basic_block_def *basic_block;
 156 typedef const struct basic_block_def *const_basic_block;
 157
 158 #define obstack_chunk_alloc     ((void *(*) (long)) xmalloc)
 159 #define obstack_chunk_free      ((void (*) (void *)) free)
 160 #define OBSTACK_CHUNK_SIZE      0
 161 #define gcc_obstack_init(OBSTACK)                       \
 162   _obstack_begin ((OBSTACK), OBSTACK_CHUNK_SIZE, 0,     \
 163                   obstack_chunk_alloc,                  \
 164                   obstack_chunk_free)
 165
 166 /* enum reg_class is target specific, so it should not appear in
 167    target-independent code or interfaces, like the target hook declarations
 168    in target.h.  */
 169 typedef int reg_class_t;
 170
 171 class rtl_opt_pass;
 172
 173 namespace gcc {
 174   class context;
 175 }
 176
 177 #else
 178
 179 struct _dont_use_rtx_here_;
 180 struct _dont_use_rtvec_here_;
 181 union _dont_use_tree_here_;
 182 #define rtx struct _dont_use_rtx_here_ *
 183 #define const_rtx struct _dont_use_rtx_here_ *
 184 #define rtvec struct _dont_use_rtvec_here *
 185 #define const_rtvec struct _dont_use_rtvec_here *
 186 #define tree union _dont_use_tree_here_ *
 187 #define const_tree union _dont_use_tree_here_ *
 188
 189 #endif
 190
 191 /* Classes of functions that compiler needs to check
 192    whether they are present at the runtime or not.  */
 193 enum function_class {
 194   function_c94,
 195   function_c99_misc,
 196   function_c99_math_complex,
 197   function_sincos
 198 };
 199
 200 /* Memory model types for the __atomic* builtins.
 201    This must match the order in libstdc++-v3/include/bits/atomic_base.h.  */
 202 enum memmodel
 203 {
 204   MEMMODEL_RELAXED = 0,
 205   MEMMODEL_CONSUME = 1,
 206   MEMMODEL_ACQUIRE = 2,
 207   MEMMODEL_RELEASE = 3,
 208   MEMMODEL_ACQ_REL = 4,
 209   MEMMODEL_SEQ_CST = 5,
 210   MEMMODEL_LAST = 6
 211 };
 212
 213 /* Suppose that higher bits are target dependent. */
 214 #define MEMMODEL_MASK ((1<<16)-1)
 215
 216 /* Support for user-provided GGC and PCH markers.  The first parameter
 217    is a pointer to a pointer, the second a cookie.  */
 218 typedef void (*gt_pointer_operator) (void *, void *);
 219
 220 #if !defined (HAVE_UCHAR)
 221 typedef unsigned char uchar;
 222 #endif
 223
 224 #endif /* coretypes.h */