* *
* C Implementation File *
* *
- * Copyright (C) 1992-2010, Free Software Foundation, Inc. *
+ * Copyright (C) 1992-2012, Free Software Foundation, Inc. *
* *
* GNAT is free software; you can redistribute it and/or modify it under *
* terms of the GNU General Public License as published by the Free Soft- *
* *
****************************************************************************/
-/* This file contains parts of the compiler that are required for interfacing
- with GCC but otherwise do nothing and parts of Gigi that need to know
- about GIMPLE. */
-
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "opts.h"
#include "options.h"
#include "plugin.h"
+#include "real.h"
#include "function.h" /* For pass_by_reference. */
#include "ada.h"
#include "ada-tree.h"
#include "gigi.h"
-static bool gnat_init (void);
-static unsigned int gnat_option_lang_mask (void);
-static void gnat_init_options (unsigned int,
- struct cl_decoded_option *);
-static int gnat_handle_option (size_t, const char *, int, int);
-static bool gnat_post_options (const char **);
-static alias_set_type gnat_get_alias_set (tree);
-static void gnat_print_decl (FILE *, tree, int);
-static void gnat_print_type (FILE *, tree, int);
-static const char *gnat_printable_name (tree, int);
-static const char *gnat_dwarf_name (tree, int);
-static tree gnat_return_tree (tree);
-static void gnat_parse_file (int);
-static void internal_error_function (diagnostic_context *,
- const char *, va_list *);
-static tree gnat_type_max_size (const_tree);
-static void gnat_get_subrange_bounds (const_tree, tree *, tree *);
-static tree gnat_eh_personality (void);
-
-/* Definitions for our language-specific hooks. */
-
-#undef LANG_HOOKS_NAME
-#define LANG_HOOKS_NAME "GNU Ada"
-#undef LANG_HOOKS_IDENTIFIER_SIZE
-#define LANG_HOOKS_IDENTIFIER_SIZE sizeof (struct tree_identifier)
-#undef LANG_HOOKS_INIT
-#define LANG_HOOKS_INIT gnat_init
-#undef LANG_HOOKS_OPTION_LANG_MASK
-#define LANG_HOOKS_OPTION_LANG_MASK gnat_option_lang_mask
-#undef LANG_HOOKS_INIT_OPTIONS
-#define LANG_HOOKS_INIT_OPTIONS gnat_init_options
-#undef LANG_HOOKS_HANDLE_OPTION
-#define LANG_HOOKS_HANDLE_OPTION gnat_handle_option
-#undef LANG_HOOKS_POST_OPTIONS
-#define LANG_HOOKS_POST_OPTIONS gnat_post_options
-#undef LANG_HOOKS_PARSE_FILE
-#define LANG_HOOKS_PARSE_FILE gnat_parse_file
-#undef LANG_HOOKS_HASH_TYPES
-#define LANG_HOOKS_HASH_TYPES false
-#undef LANG_HOOKS_GETDECLS
-#define LANG_HOOKS_GETDECLS lhd_return_null_tree_v
-#undef LANG_HOOKS_PUSHDECL
-#define LANG_HOOKS_PUSHDECL gnat_return_tree
-#undef LANG_HOOKS_WRITE_GLOBALS
-#define LANG_HOOKS_WRITE_GLOBALS gnat_write_global_declarations
-#undef LANG_HOOKS_GET_ALIAS_SET
-#define LANG_HOOKS_GET_ALIAS_SET gnat_get_alias_set
-#undef LANG_HOOKS_PRINT_DECL
-#define LANG_HOOKS_PRINT_DECL gnat_print_decl
-#undef LANG_HOOKS_PRINT_TYPE
-#define LANG_HOOKS_PRINT_TYPE gnat_print_type
-#undef LANG_HOOKS_TYPE_MAX_SIZE
-#define LANG_HOOKS_TYPE_MAX_SIZE gnat_type_max_size
-#undef LANG_HOOKS_DECL_PRINTABLE_NAME
-#define LANG_HOOKS_DECL_PRINTABLE_NAME gnat_printable_name
-#undef LANG_HOOKS_DWARF_NAME
-#define LANG_HOOKS_DWARF_NAME gnat_dwarf_name
-#undef LANG_HOOKS_GIMPLIFY_EXPR
-#define LANG_HOOKS_GIMPLIFY_EXPR gnat_gimplify_expr
-#undef LANG_HOOKS_TYPE_FOR_MODE
-#define LANG_HOOKS_TYPE_FOR_MODE gnat_type_for_mode
-#undef LANG_HOOKS_TYPE_FOR_SIZE
-#define LANG_HOOKS_TYPE_FOR_SIZE gnat_type_for_size
-#undef LANG_HOOKS_TYPES_COMPATIBLE_P
-#define LANG_HOOKS_TYPES_COMPATIBLE_P gnat_types_compatible_p
-#undef LANG_HOOKS_GET_SUBRANGE_BOUNDS
-#define LANG_HOOKS_GET_SUBRANGE_BOUNDS gnat_get_subrange_bounds
-#undef LANG_HOOKS_ATTRIBUTE_TABLE
-#define LANG_HOOKS_ATTRIBUTE_TABLE gnat_internal_attribute_table
-#undef LANG_HOOKS_BUILTIN_FUNCTION
-#define LANG_HOOKS_BUILTIN_FUNCTION gnat_builtin_function
-#undef LANG_HOOKS_EH_PERSONALITY
-#define LANG_HOOKS_EH_PERSONALITY gnat_eh_personality
-#undef LANG_HOOKS_DEEP_UNSHARING
-#define LANG_HOOKS_DEEP_UNSHARING true
-
-struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
-
/* This symbol needs to be defined for the front-end. */
void *callgraph_info_file = NULL;
-/* How much we want of our DWARF extensions. Some of our dwarf+ extensions
- are incompatible with regular GDB versions, so we must make sure to only
- produce them on explicit request. This is eventually reflected into the
- use_gnu_debug_info_extensions common flag for later processing. */
-static int gnat_dwarf_extensions = 0;
-
-/* Command-line argc and argv. These variables are global
- since they are imported in back_end.adb. */
+/* Command-line argc and argv. These variables are global since they are
+ imported in back_end.adb. */
unsigned int save_argc;
const char **save_argv;
extern int gnat_argc;
extern char **gnat_argv;
+#ifdef __cplusplus
+extern "C" {
+#endif
+
/* Declare functions we use as part of startup. */
-extern void __gnat_initialize (void *);
-extern void __gnat_install_SEH_handler (void *);
-extern void adainit (void);
-extern void _ada_gnat1drv (void);
+extern void __gnat_initialize (void *);
+extern void __gnat_install_SEH_handler (void *);
+extern void adainit (void);
+extern void _ada_gnat1drv (void);
+
+#ifdef __cplusplus
+}
+#endif
/* The parser for the language. For us, we process the GNAT tree. */
static void
-gnat_parse_file (int set_yydebug ATTRIBUTE_UNUSED)
+gnat_parse_file (void)
{
int seh[2];
/* Decode all the language specific options that cannot be decoded by GCC.
The option decoding phase of GCC calls this routine on the flags that
- it cannot decode. Return the number of consecutive arguments from ARGV
- that have been successfully decoded or 0 on failure. */
+ are marked as Ada-specific. Return true on success or false on failure. */
-static int
-gnat_handle_option (size_t scode, const char *arg, int value,
- int kind ATTRIBUTE_UNUSED)
+static bool
+gnat_handle_option (size_t scode, const char *arg ATTRIBUTE_UNUSED, int value,
+ int kind ATTRIBUTE_UNUSED, location_t loc ATTRIBUTE_UNUSED,
+ const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED)
{
- const struct cl_option *option = &cl_options[scode];
enum opt_code code = (enum opt_code) scode;
- if (arg == NULL && (option->flags & (CL_JOINED | CL_SEPARATE)))
- {
- error ("missing argument to \"-%s\"", option->opt_text);
- return 1;
- }
-
switch (code)
{
case OPT_Wall:
warn_unused = value;
warn_uninitialized = value;
- break;
-
- case OPT_Wmissing_prototypes:
- case OPT_Wstrict_prototypes:
- case OPT_Wwrite_strings:
- case OPT_Wlong_long:
- case OPT_Wvariadic_macros:
- case OPT_Wold_style_definition:
- case OPT_Wmissing_format_attribute:
- case OPT_Woverlength_strings:
- /* These are used in the GCC Makefile. */
- break;
-
- case OPT_feliminate_unused_debug_types:
- /* We arrange for post_option to be able to only set the corresponding
- flag to 1 when explicitly requested by the user. We expect the
- default flag value to be either 0 or positive, and expose a positive
- -f as a negative value to post_option. */
- flag_eliminate_unused_debug_types = -value;
- break;
-
- case OPT_gdwarfplus:
- gnat_dwarf_extensions = 1;
+ warn_maybe_uninitialized = value;
break;
case OPT_gant:
gcc_unreachable ();
}
- return 1;
+ return true;
}
/* Return language mask for option processing. */
return CL_Ada;
}
+/* Initialize options structure OPTS. */
+
+static void
+gnat_init_options_struct (struct gcc_options *opts)
+{
+ /* Uninitialized really means uninitialized in Ada. */
+ opts->x_flag_zero_initialized_in_bss = 0;
+}
+
/* Initialize for option processing. */
static void
{
/* Reconstruct an argv array for use of back_end.adb.
- ??? back_end.adb should not rely on this; instead, it should work
- with decoded options without such reparsing, to ensure
- consistency in how options are decoded. */
+ ??? back_end.adb should not rely on this; instead, it should work with
+ decoded options without such reparsing, to ensure consistency in how
+ options are decoded. */
unsigned int i;
save_argv = XNEWVEC (const char *, 2 * decoded_options_count + 1);
save_argc = 0;
for (i = 0; i < decoded_options_count; i++)
{
- save_argv[save_argc++] = decoded_options[i].canonical_option[0];
- if (decoded_options[i].canonical_option[1] != NULL)
- save_argv[save_argc++] = decoded_options[i].canonical_option[1];
+ size_t num_elements = decoded_options[i].canonical_option_num_elements;
+
+ if (decoded_options[i].errors
+ || decoded_options[i].opt_index == OPT_SPECIAL_unknown
+ || num_elements == 0)
+ continue;
+
+ /* Deal with -I- specially since it must be a single switch. */
+ if (decoded_options[i].opt_index == OPT_I
+ && num_elements == 2
+ && decoded_options[i].canonical_option[1][0] == '-'
+ && decoded_options[i].canonical_option[1][1] == '\0')
+ save_argv[save_argc++] = "-I-";
+ else
+ {
+ gcc_assert (num_elements >= 1 && num_elements <= 2);
+ save_argv[save_argc++] = decoded_options[i].canonical_option[0];
+ if (num_elements >= 2)
+ save_argv[save_argc++] = decoded_options[i].canonical_option[1];
+ }
}
save_argv[save_argc] = NULL;
gnat_argv = (char **) xmalloc (sizeof (save_argv[0]));
gnat_argv[0] = xstrdup (save_argv[0]); /* name of the command */
gnat_argc = 1;
-
- /* Uninitialized really means uninitialized in Ada. */
- flag_zero_initialized_in_bss = 0;
}
+/* Ada code requires variables for these settings rather than elements
+ of the global_options structure. */
+#undef optimize
+#undef optimize_size
+#undef flag_compare_debug
+#undef flag_stack_check
+int optimize;
+int optimize_size;
+int flag_compare_debug;
+enum stack_check_type flag_stack_check = NO_STACK_CHECK;
+
/* Post-switch processing. */
-bool
+static bool
gnat_post_options (const char **pfilename ATTRIBUTE_UNUSED)
{
- /* Excess precision other than "fast" requires front-end
- support. */
+ /* Excess precision other than "fast" requires front-end support. */
if (flag_excess_precision_cmdline == EXCESS_PRECISION_STANDARD
&& TARGET_FLT_EVAL_METHOD_NON_DEFAULT)
sorry ("-fexcess-precision=standard for Ada");
/* No psABI change warnings for Ada. */
warn_psabi = 0;
- /* Force eliminate_unused_debug_types to 0 unless an explicit positive
- -f has been passed. This forces the default to 0 for Ada, which might
- differ from the common default. */
- if (flag_eliminate_unused_debug_types < 0)
- flag_eliminate_unused_debug_types = 1;
- else
- flag_eliminate_unused_debug_types = 0;
-
- /* Reflect the explicit request of DWARF extensions into the common
- flag for use by later passes. */
- if (write_symbols == DWARF2_DEBUG)
- use_gnu_debug_info_extensions = gnat_dwarf_extensions > 0;
+ optimize = global_options.x_optimize;
+ optimize_size = global_options.x_optimize_size;
+ flag_compare_debug = global_options.x_flag_compare_debug;
+ flag_stack_check = global_options.x_flag_stack_check;
return false;
}
/* Do little here, most of the standard declarations are set up after the
front-end has been run. Use the same `char' as C, this doesn't really
matter since we'll use the explicit `unsigned char' for Character. */
- build_common_tree_nodes (flag_signed_char);
-
- /* In Ada, we use the unsigned type corresponding to the width of Pmode as
- SIZETYPE. In most cases when ptr_mode and Pmode differ, C will use the
- width of ptr_mode for SIZETYPE, but we get better code using the width
- of Pmode. Note that, although we manipulate negative offsets for some
- internal constructs and rely on compile time overflow detection in size
- computations, using unsigned types for SIZETYPEs is fine since they are
- treated specially by the middle-end, in particular sign-extended. */
- size_type_node = gnat_type_for_mode (Pmode, 1);
- set_sizetype (size_type_node);
- TYPE_NAME (sizetype) = get_identifier ("size_type");
+ build_common_tree_nodes (flag_signed_char, false);
/* In Ada, we use an unsigned 8-bit type for the default boolean type. */
boolean_type_node = make_unsigned_type (8);
SET_TYPE_RM_MAX_VALUE (boolean_type_node,
build_int_cst (boolean_type_node, 1));
SET_TYPE_RM_SIZE (boolean_type_node, bitsize_int (1));
+ boolean_true_node = TYPE_MAX_VALUE (boolean_type_node);
+ boolean_false_node = TYPE_MIN_VALUE (boolean_type_node);
- build_common_tree_nodes_2 (0);
sbitsize_one_node = sbitsize_int (1);
sbitsize_unit_node = sbitsize_int (BITS_PER_UNIT);
- boolean_true_node = TYPE_MAX_VALUE (boolean_type_node);
ptr_void_type_node = build_pointer_type (void_type_node);
void
gnat_init_gcc_eh (void)
{
-#ifdef DWARF2_UNWIND_INFO
- /* lang_dependent_init already called dwarf2out_frame_init if true. */
- int dwarf2out_frame_initialized = dwarf2out_do_frame ();
-#endif
-
/* We shouldn't do anything if the No_Exceptions_Handler pragma is set,
though. This could for instance lead to the emission of tables with
references to symbols (such as the Ada eh personality routine) within
flag_non_call_exceptions = 1;
init_eh ();
-#ifdef DWARF2_UNWIND_INFO
- if (!dwarf2out_frame_initialized && dwarf2out_do_frame ())
- dwarf2out_frame_init ();
-#endif
}
/* Print language-specific items in declaration NODE. */
break;
case VAR_DECL:
- print_node (file, "renamed object", DECL_RENAMED_OBJECT (node),
- indent + 4);
+ if (DECL_LOOP_PARM_P (node))
+ print_node (file, "induction var", DECL_INDUCTION_VAR (node),
+ indent + 4);
+ else
+ print_node (file, "renamed object", DECL_RENAMED_OBJECT (node),
+ indent + 4);
break;
default:
return (const char *) IDENTIFIER_POINTER (DECL_NAME (decl));
}
+/* Return the descriptive type associated with TYPE, if any. */
+
+static tree
+gnat_descriptive_type (const_tree type)
+{
+ if (TYPE_STUB_DECL (type))
+ return DECL_PARALLEL_TYPE (TYPE_STUB_DECL (type));
+ else
+ return NULL_TREE;
+}
+
+/* Return true if types T1 and T2 are identical for type hashing purposes.
+ Called only after doing all language independent checks. At present,
+ this function is only called when both types are FUNCTION_TYPE. */
+
+static bool
+gnat_type_hash_eq (const_tree t1, const_tree t2)
+{
+ gcc_assert (TREE_CODE (t1) == FUNCTION_TYPE);
+ return fntype_same_flags_p (t1, TYPE_CI_CO_LIST (t2),
+ TYPE_RETURN_UNCONSTRAINED_P (t2),
+ TYPE_RETURN_BY_DIRECT_REF_P (t2),
+ TREE_ADDRESSABLE (t2));
+}
+
/* Do nothing (return the tree node passed). */
static tree
/* If we don't have a constant, see what we can get from TYPE_ADA_SIZE,
which should stay untouched. */
if (!host_integerp (max_unitsize, 1)
- && (TREE_CODE (gnu_type) == RECORD_TYPE
- || TREE_CODE (gnu_type) == UNION_TYPE
- || TREE_CODE (gnu_type) == QUAL_UNION_TYPE)
+ && RECORD_OR_UNION_TYPE_P (gnu_type)
+ && !TYPE_FAT_POINTER_P (gnu_type)
&& TYPE_ADA_SIZE (gnu_type))
{
tree max_adasize = max_size (TYPE_ADA_SIZE (gnu_type), true);
*highval = TYPE_MAX_VALUE (gnu_type);
}
-/* GNU_TYPE is a type. Determine if it should be passed by reference by
- default. */
+/* GNU_TYPE is the type of a subprogram parameter. Determine if it should be
+ passed by reference by default. */
bool
default_pass_by_ref (tree gnu_type)
is an In Out parameter, but it's probably best to err on the side of
passing more things by reference. */
- if (pass_by_reference (NULL, TYPE_MODE (gnu_type), gnu_type, 1))
+ if (pass_by_reference (NULL, TYPE_MODE (gnu_type), gnu_type, true))
return true;
if (targetm.calls.return_in_memory (gnu_type, NULL_TREE))
return false;
}
-/* GNU_TYPE is the type of a subprogram parameter. Determine from the type if
- it should be passed by reference. */
+/* GNU_TYPE is the type of a subprogram parameter. Determine if it must be
+ passed by reference. */
bool
must_pass_by_ref (tree gnu_type)
and does not produce compatibility problems with C, since C does
not have such objects. */
return (TREE_CODE (gnu_type) == UNCONSTRAINED_ARRAY_TYPE
- || TREE_ADDRESSABLE (gnu_type)
+ || TYPE_IS_BY_REFERENCE_P (gnu_type)
|| (TYPE_SIZE (gnu_type)
&& TREE_CODE (TYPE_SIZE (gnu_type)) != INTEGER_CST));
}
+/* This function is called by the front-end to enumerate all the supported
+ modes for the machine, as well as some predefined C types. F is a function
+ which is called back with the parameters as listed below, first a string,
+ then seven ints. The name is any arbitrary null-terminated string and has
+ no particular significance, except for the case of predefined C types, where
+ it should be the name of the C type. For integer types, only signed types
+ should be listed, unsigned versions are assumed. The order of types should
+ be in order of preference, with the smallest/cheapest types first.
+
+ In particular, C predefined types should be listed before other types,
+ binary floating point types before decimal ones, and narrower/cheaper
+ type versions before more expensive ones. In type selection the first
+ matching variant will be used.
+
+ NAME pointer to first char of type name
+ DIGS number of decimal digits for floating-point modes, else 0
+ COMPLEX_P nonzero is this represents a complex mode
+ COUNT count of number of items, nonzero for vector mode
+ FLOAT_REP Float_Rep_Kind for FP, otherwise undefined
+ PRECISION number of bits used to store data
+ SIZE number of bits occupied by the mode
+ ALIGN number of bits to which mode is aligned. */
+
+void
+enumerate_modes (void (*f) (const char *, int, int, int, int, int, int, int))
+{
+ const tree c_types[]
+ = { float_type_node, double_type_node, long_double_type_node };
+ const char *const c_names[]
+ = { "float", "double", "long double" };
+ int iloop;
+
+ for (iloop = 0; iloop < NUM_MACHINE_MODES; iloop++)
+ {
+ enum machine_mode i = (enum machine_mode) iloop;
+ enum machine_mode inner_mode = i;
+ bool float_p = false;
+ bool complex_p = false;
+ bool vector_p = false;
+ bool skip_p = false;
+ int digs = 0;
+ unsigned int nameloop;
+ Float_Rep_Kind float_rep = IEEE_Binary; /* Until proven otherwise */
+
+ switch (GET_MODE_CLASS (i))
+ {
+ case MODE_INT:
+ break;
+ case MODE_FLOAT:
+ float_p = true;
+ break;
+ case MODE_COMPLEX_INT:
+ complex_p = true;
+ inner_mode = GET_MODE_INNER (i);
+ break;
+ case MODE_COMPLEX_FLOAT:
+ float_p = true;
+ complex_p = true;
+ inner_mode = GET_MODE_INNER (i);
+ break;
+ case MODE_VECTOR_INT:
+ vector_p = true;
+ inner_mode = GET_MODE_INNER (i);
+ break;
+ case MODE_VECTOR_FLOAT:
+ float_p = true;
+ vector_p = true;
+ inner_mode = GET_MODE_INNER (i);
+ break;
+ default:
+ skip_p = true;
+ }
+
+ if (float_p)
+ {
+ const struct real_format *fmt = REAL_MODE_FORMAT (inner_mode);
+
+ /* ??? Cope with the ghost XFmode of the ARM port. */
+ if (!fmt)
+ continue;
+
+ if (fmt->b == 2)
+ digs = (fmt->p - 1) * 1233 / 4096; /* scale by log (2) */
+
+ else if (fmt->b == 10)
+ digs = fmt->p;
+
+ else
+ gcc_unreachable();
+
+ if (fmt == &vax_f_format
+ || fmt == &vax_d_format
+ || fmt == &vax_g_format)
+ float_rep = VAX_Native;
+ }
+
+ /* First register any C types for this mode that the front end
+ may need to know about, unless the mode should be skipped. */
+ if (!skip_p && !vector_p)
+ for (nameloop = 0; nameloop < ARRAY_SIZE (c_types); nameloop++)
+ {
+ tree type = c_types[nameloop];
+ const char *name = c_names[nameloop];
+
+ if (TYPE_MODE (type) == i)
+ {
+ f (name, digs, complex_p, 0, float_rep, TYPE_PRECISION (type),
+ TREE_INT_CST_LOW (TYPE_SIZE (type)), TYPE_ALIGN (type));
+ skip_p = true;
+ }
+ }
+
+ /* If no predefined C types were found, register the mode itself. */
+ if (!skip_p)
+ f (GET_MODE_NAME (i), digs, complex_p,
+ vector_p ? GET_MODE_NUNITS (i) : 0, float_rep,
+ GET_MODE_PRECISION (i), GET_MODE_BITSIZE (i),
+ GET_MODE_ALIGNMENT (i));
+ }
+}
+
/* Return the size of the FP mode with precision PREC. */
int
static GTY(()) tree gnat_eh_personality_decl;
+/* Return the GNAT personality function decl. */
+
static tree
gnat_eh_personality (void)
{
if (!gnat_eh_personality_decl)
- gnat_eh_personality_decl
- = build_personality_function (USING_SJLJ_EXCEPTIONS
- ? "__gnat_eh_personality_sj"
- : "__gnat_eh_personality");
-
+ gnat_eh_personality_decl = build_personality_function ("gnat");
return gnat_eh_personality_decl;
}
+/* Initialize language-specific bits of tree_contains_struct. */
+
+static void
+gnat_init_ts (void)
+{
+ MARK_TS_COMMON (UNCONSTRAINED_ARRAY_TYPE);
+
+ MARK_TS_TYPED (UNCONSTRAINED_ARRAY_REF);
+ MARK_TS_TYPED (NULL_EXPR);
+ MARK_TS_TYPED (PLUS_NOMOD_EXPR);
+ MARK_TS_TYPED (MINUS_NOMOD_EXPR);
+ MARK_TS_TYPED (ATTR_ADDR_EXPR);
+ MARK_TS_TYPED (STMT_STMT);
+ MARK_TS_TYPED (LOOP_STMT);
+ MARK_TS_TYPED (EXIT_STMT);
+}
+
+/* Definitions for our language-specific hooks. */
+
+#undef LANG_HOOKS_NAME
+#define LANG_HOOKS_NAME "GNU Ada"
+#undef LANG_HOOKS_IDENTIFIER_SIZE
+#define LANG_HOOKS_IDENTIFIER_SIZE sizeof (struct tree_identifier)
+#undef LANG_HOOKS_INIT
+#define LANG_HOOKS_INIT gnat_init
+#undef LANG_HOOKS_OPTION_LANG_MASK
+#define LANG_HOOKS_OPTION_LANG_MASK gnat_option_lang_mask
+#undef LANG_HOOKS_INIT_OPTIONS_STRUCT
+#define LANG_HOOKS_INIT_OPTIONS_STRUCT gnat_init_options_struct
+#undef LANG_HOOKS_INIT_OPTIONS
+#define LANG_HOOKS_INIT_OPTIONS gnat_init_options
+#undef LANG_HOOKS_HANDLE_OPTION
+#define LANG_HOOKS_HANDLE_OPTION gnat_handle_option
+#undef LANG_HOOKS_POST_OPTIONS
+#define LANG_HOOKS_POST_OPTIONS gnat_post_options
+#undef LANG_HOOKS_PARSE_FILE
+#define LANG_HOOKS_PARSE_FILE gnat_parse_file
+#undef LANG_HOOKS_TYPE_HASH_EQ
+#define LANG_HOOKS_TYPE_HASH_EQ gnat_type_hash_eq
+#undef LANG_HOOKS_GETDECLS
+#define LANG_HOOKS_GETDECLS lhd_return_null_tree_v
+#undef LANG_HOOKS_PUSHDECL
+#define LANG_HOOKS_PUSHDECL gnat_return_tree
+#undef LANG_HOOKS_WRITE_GLOBALS
+#define LANG_HOOKS_WRITE_GLOBALS gnat_write_global_declarations
+#undef LANG_HOOKS_GET_ALIAS_SET
+#define LANG_HOOKS_GET_ALIAS_SET gnat_get_alias_set
+#undef LANG_HOOKS_PRINT_DECL
+#define LANG_HOOKS_PRINT_DECL gnat_print_decl
+#undef LANG_HOOKS_PRINT_TYPE
+#define LANG_HOOKS_PRINT_TYPE gnat_print_type
+#undef LANG_HOOKS_TYPE_MAX_SIZE
+#define LANG_HOOKS_TYPE_MAX_SIZE gnat_type_max_size
+#undef LANG_HOOKS_DECL_PRINTABLE_NAME
+#define LANG_HOOKS_DECL_PRINTABLE_NAME gnat_printable_name
+#undef LANG_HOOKS_DWARF_NAME
+#define LANG_HOOKS_DWARF_NAME gnat_dwarf_name
+#undef LANG_HOOKS_GIMPLIFY_EXPR
+#define LANG_HOOKS_GIMPLIFY_EXPR gnat_gimplify_expr
+#undef LANG_HOOKS_TYPE_FOR_MODE
+#define LANG_HOOKS_TYPE_FOR_MODE gnat_type_for_mode
+#undef LANG_HOOKS_TYPE_FOR_SIZE
+#define LANG_HOOKS_TYPE_FOR_SIZE gnat_type_for_size
+#undef LANG_HOOKS_TYPES_COMPATIBLE_P
+#define LANG_HOOKS_TYPES_COMPATIBLE_P gnat_types_compatible_p
+#undef LANG_HOOKS_GET_SUBRANGE_BOUNDS
+#define LANG_HOOKS_GET_SUBRANGE_BOUNDS gnat_get_subrange_bounds
+#undef LANG_HOOKS_DESCRIPTIVE_TYPE
+#define LANG_HOOKS_DESCRIPTIVE_TYPE gnat_descriptive_type
+#undef LANG_HOOKS_ATTRIBUTE_TABLE
+#define LANG_HOOKS_ATTRIBUTE_TABLE gnat_internal_attribute_table
+#undef LANG_HOOKS_BUILTIN_FUNCTION
+#define LANG_HOOKS_BUILTIN_FUNCTION gnat_builtin_function
+#undef LANG_HOOKS_EH_PERSONALITY
+#define LANG_HOOKS_EH_PERSONALITY gnat_eh_personality
+#undef LANG_HOOKS_DEEP_UNSHARING
+#define LANG_HOOKS_DEEP_UNSHARING true
+#undef LANG_HOOKS_INIT_TS
+#define LANG_HOOKS_INIT_TS gnat_init_ts
+
+struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
+
#include "gt-ada-misc.h"
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