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  1. /* GCC core type declarations.
  2.    Copyright (C) 2002-2015 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 int64_t gcov_type;
  47. typedef uint64_t 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.  
  59. /* Subclasses of rtx_def, using indentation to show the class
  60.    hierarchy, along with the relevant invariant.
  61.    Where possible, keep this list in the same order as in rtl.def.  */
  62. class rtx_def;
  63.   class rtx_expr_list;           /* GET_CODE (X) == EXPR_LIST */
  64.   class rtx_insn_list;           /* GET_CODE (X) == INSN_LIST */
  65.   class rtx_sequence;            /* GET_CODE (X) == SEQUENCE */
  66.   class rtx_insn;
  67.     class rtx_debug_insn;      /* DEBUG_INSN_P (X) */
  68.     class rtx_nonjump_insn;    /* NONJUMP_INSN_P (X) */
  69.     class rtx_jump_insn;       /* JUMP_P (X) */
  70.     class rtx_call_insn;       /* CALL_P (X) */
  71.     class rtx_jump_table_data; /* JUMP_TABLE_DATA_P (X) */
  72.     class rtx_barrier;         /* BARRIER_P (X) */
  73.     class rtx_code_label;      /* LABEL_P (X) */
  74.     class rtx_note;            /* NOTE_P (X) */
  75.  
  76. struct rtvec_def;
  77. typedef struct rtvec_def *rtvec;
  78. typedef const struct rtvec_def *const_rtvec;
  79. struct hwivec_def;
  80. typedef struct hwivec_def *hwivec;
  81. typedef const struct hwivec_def *const_hwivec;
  82. union tree_node;
  83. typedef union tree_node *tree;
  84. typedef const union tree_node *const_tree;
  85. typedef struct gimple_statement_base *gimple;
  86. typedef const struct gimple_statement_base *const_gimple;
  87. typedef gimple gimple_seq;
  88. struct gimple_stmt_iterator;
  89.  
  90. /* Forward decls for leaf gimple subclasses (for individual gimple codes).
  91.    Keep this in the same order as the corresponding codes in gimple.def.  */
  92.  
  93. struct gcond;
  94. struct gdebug;
  95. struct ggoto;
  96. struct glabel;
  97. struct gswitch;
  98. struct gassign;
  99. struct gasm;
  100. struct gcall;
  101. struct gtransaction;
  102. struct greturn;
  103. struct gbind;
  104. struct gcatch;
  105. struct geh_filter;
  106. struct geh_mnt;
  107. struct geh_else;
  108. struct gresx;
  109. struct geh_dispatch;
  110. struct gphi;
  111. struct gtry;
  112. struct gomp_atomic_load;
  113. struct gomp_atomic_store;
  114. struct gomp_continue;
  115. struct gomp_critical;
  116. struct gomp_for;
  117. struct gomp_parallel;
  118. struct gomp_task;
  119. struct gomp_sections;
  120. struct gomp_single;
  121. struct gomp_target;
  122. struct gomp_teams;
  123.  
  124. union section;
  125. typedef union section section;
  126. struct gcc_options;
  127. struct cl_target_option;
  128. struct cl_optimization;
  129. struct cl_option;
  130. struct cl_decoded_option;
  131. struct cl_option_handlers;
  132. struct diagnostic_context;
  133. struct pretty_printer;
  134.  
  135. /* Address space number for named address space support.  */
  136. typedef unsigned char addr_space_t;
  137.  
  138. /* The value of addr_space_t that represents the generic address space.  */
  139. #define ADDR_SPACE_GENERIC 0
  140. #define ADDR_SPACE_GENERIC_P(AS) ((AS) == ADDR_SPACE_GENERIC)
  141.  
  142. /* The major intermediate representations of GCC.  */
  143. enum ir_type {
  144.   IR_GIMPLE,
  145.   IR_RTL_CFGRTL,
  146.   IR_RTL_CFGLAYOUT
  147. };
  148.  
  149. /* Provide forward struct declaration so that we don't have to include
  150.    all of cpplib.h whenever a random prototype includes a pointer.
  151.    Note that the cpp_reader and cpp_token typedefs remain part of
  152.    cpplib.h.  */
  153.  
  154. struct cpp_reader;
  155. struct cpp_token;
  156.  
  157. /* The thread-local storage model associated with a given VAR_DECL
  158.    or SYMBOL_REF.  This isn't used much, but both trees and RTL refer
  159.    to it, so it's here.  */
  160. enum tls_model {
  161.   TLS_MODEL_NONE,
  162.   TLS_MODEL_EMULATED,
  163.   TLS_MODEL_REAL,
  164.   TLS_MODEL_GLOBAL_DYNAMIC = TLS_MODEL_REAL,
  165.   TLS_MODEL_LOCAL_DYNAMIC,
  166.   TLS_MODEL_INITIAL_EXEC,
  167.   TLS_MODEL_LOCAL_EXEC
  168. };
  169.  
  170. /* Types of ABI for an offload compiler.  */
  171. enum offload_abi {
  172.   OFFLOAD_ABI_UNSET,
  173.   OFFLOAD_ABI_LP64,
  174.   OFFLOAD_ABI_ILP32
  175. };
  176.  
  177. /* Types of unwind/exception handling info that can be generated.  */
  178.  
  179. enum unwind_info_type
  180. {
  181.   UI_NONE,
  182.   UI_SJLJ,
  183.   UI_DWARF2,
  184.   UI_TARGET,
  185.   UI_SEH
  186. };
  187.  
  188. /* Callgraph node profile representation.  */
  189. enum node_frequency {
  190.   /* This function most likely won't be executed at all.
  191.      (set only when profile feedback is available or via function attribute). */
  192.   NODE_FREQUENCY_UNLIKELY_EXECUTED,
  193.   /* For functions that are known to be executed once (i.e. constructors, destructors
  194.      and main function.  */
  195.   NODE_FREQUENCY_EXECUTED_ONCE,
  196.   /* The default value.  */
  197.   NODE_FREQUENCY_NORMAL,
  198.   /* Optimize this function hard
  199.      (set only when profile feedback is available or via function attribute). */
  200.   NODE_FREQUENCY_HOT
  201. };
  202.  
  203. /* Possible initialization status of a variable.   When requested
  204.    by the user, this information is tracked and recorded in the DWARF
  205.    debug information, along with the variable's location.  */
  206. enum var_init_status
  207. {
  208.   VAR_INIT_STATUS_UNKNOWN,
  209.   VAR_INIT_STATUS_UNINITIALIZED,
  210.   VAR_INIT_STATUS_INITIALIZED
  211. };
  212.  
  213.  
  214. struct edge_def;
  215. typedef struct edge_def *edge;
  216. typedef const struct edge_def *const_edge;
  217. struct basic_block_def;
  218. typedef struct basic_block_def *basic_block;
  219. typedef const struct basic_block_def *const_basic_block;
  220.  
  221. #define obstack_chunk_alloc     xmalloc
  222. #define obstack_chunk_free      free
  223. #define OBSTACK_CHUNK_SIZE      0
  224. #define gcc_obstack_init(OBSTACK)                               \
  225.   obstack_specify_allocation ((OBSTACK), OBSTACK_CHUNK_SIZE, 0, \
  226.                               obstack_chunk_alloc,              \
  227.                               obstack_chunk_free)
  228.  
  229. /* enum reg_class is target specific, so it should not appear in
  230.    target-independent code or interfaces, like the target hook declarations
  231.    in target.h.  */
  232. typedef int reg_class_t;
  233.  
  234. class rtl_opt_pass;
  235.  
  236. namespace gcc {
  237.   class context;
  238. }
  239.  
  240. #else
  241.  
  242. struct _dont_use_rtx_here_;
  243. struct _dont_use_rtvec_here_;
  244. struct _dont_use_rtx_insn_here_;
  245. union _dont_use_tree_here_;
  246. #define rtx struct _dont_use_rtx_here_ *
  247. #define const_rtx struct _dont_use_rtx_here_ *
  248. #define rtvec struct _dont_use_rtvec_here *
  249. #define const_rtvec struct _dont_use_rtvec_here *
  250. #define rtx_insn struct _dont_use_rtx_insn_here_
  251. #define tree union _dont_use_tree_here_ *
  252. #define const_tree union _dont_use_tree_here_ *
  253.  
  254. #endif
  255.  
  256. /* Classes of functions that compiler needs to check
  257.    whether they are present at the runtime or not.  */
  258. enum function_class {
  259.   function_c94,
  260.   function_c99_misc,
  261.   function_c99_math_complex,
  262.   function_sincos,
  263.   function_c11_misc
  264. };
  265.  
  266. /* Suppose that higher bits are target dependent. */
  267. #define MEMMODEL_MASK ((1<<16)-1)
  268.  
  269. /* Legacy sync operations set this upper flag in the memory model.  This allows
  270.    targets that need to do something stronger for sync operations to
  271.    differentiate with their target patterns and issue a more appropriate insn
  272.    sequence.  See bugzilla 65697 for background.  */
  273. #define MEMMODEL_SYNC (1<<15)
  274.  
  275. /* Memory model without SYNC bit for targets/operations that do not care.  */
  276. #define MEMMODEL_BASE_MASK (MEMMODEL_SYNC-1)
  277.  
  278. /* Memory model types for the __atomic* builtins.
  279.    This must match the order in libstdc++-v3/include/bits/atomic_base.h.  */
  280. enum memmodel
  281. {
  282.   MEMMODEL_RELAXED = 0,
  283.   MEMMODEL_CONSUME = 1,
  284.   MEMMODEL_ACQUIRE = 2,
  285.   MEMMODEL_RELEASE = 3,
  286.   MEMMODEL_ACQ_REL = 4,
  287.   MEMMODEL_SEQ_CST = 5,
  288.   MEMMODEL_LAST = 6,
  289.   MEMMODEL_SYNC_ACQUIRE = MEMMODEL_ACQUIRE | MEMMODEL_SYNC,
  290.   MEMMODEL_SYNC_RELEASE = MEMMODEL_RELEASE | MEMMODEL_SYNC,
  291.   MEMMODEL_SYNC_SEQ_CST = MEMMODEL_SEQ_CST | MEMMODEL_SYNC
  292. };
  293.  
  294. /* Support for user-provided GGC and PCH markers.  The first parameter
  295.    is a pointer to a pointer, the second a cookie.  */
  296. typedef void (*gt_pointer_operator) (void *, void *);
  297.  
  298. #if !defined (HAVE_UCHAR)
  299. typedef unsigned char uchar;
  300. #endif
  301.  
  302. #endif /* coretypes.h */
  303.