1 /****************************************************************************
3 * GNAT COMPILER COMPONENTS *
7 * C Implementation File *
9 * Copyright (C) 1992-2010, Free Software Foundation, Inc. *
11 * GNAT is free software; you can redistribute it and/or modify it under *
12 * terms of the GNU General Public License as published by the Free Soft- *
13 * ware Foundation; either version 3, or (at your option) any later ver- *
14 * sion. GNAT is distributed in the hope that it will be useful, but WITH- *
15 * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
16 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
17 * for more details. You should have received a copy of the GNU General *
18 * Public License distributed with GNAT; see file COPYING3. If not see *
19 * <http://www.gnu.org/licenses/>. *
21 * GNAT was originally developed by the GNAT team at New York University. *
22 * Extensive contributions were provided by Ada Core Technologies Inc. *
24 ****************************************************************************/
26 /* This file contains parts of the compiler that are required for interfacing
27 with GCC but otherwise do nothing and parts of Gigi that need to know
32 #include "coretypes.h"
35 #include "diagnostic.h"
41 #include "langhooks.h"
42 #include "langhooks-def.h"
46 #include "function.h" /* For pass_by_reference. */
49 #include "adadecode.h"
63 static bool gnat_init (void);
64 static unsigned int gnat_option_lang_mask (void);
65 static void gnat_init_options (unsigned int,
66 struct cl_decoded_option
*);
67 static bool gnat_handle_option (size_t, const char *, int, int,
68 const struct cl_option_handlers
*);
69 static bool gnat_post_options (const char **);
70 static alias_set_type
gnat_get_alias_set (tree
);
71 static void gnat_print_decl (FILE *, tree
, int);
72 static void gnat_print_type (FILE *, tree
, int);
73 static const char *gnat_printable_name (tree
, int);
74 static const char *gnat_dwarf_name (tree
, int);
75 static tree
gnat_return_tree (tree
);
76 static void gnat_parse_file (int);
77 static void internal_error_function (diagnostic_context
*,
78 const char *, va_list *);
79 static tree
gnat_type_max_size (const_tree
);
80 static void gnat_get_subrange_bounds (const_tree
, tree
*, tree
*);
81 static tree
gnat_eh_personality (void);
83 /* Definitions for our language-specific hooks. */
85 #undef LANG_HOOKS_NAME
86 #define LANG_HOOKS_NAME "GNU Ada"
87 #undef LANG_HOOKS_IDENTIFIER_SIZE
88 #define LANG_HOOKS_IDENTIFIER_SIZE sizeof (struct tree_identifier)
89 #undef LANG_HOOKS_INIT
90 #define LANG_HOOKS_INIT gnat_init
91 #undef LANG_HOOKS_OPTION_LANG_MASK
92 #define LANG_HOOKS_OPTION_LANG_MASK gnat_option_lang_mask
93 #undef LANG_HOOKS_INIT_OPTIONS
94 #define LANG_HOOKS_INIT_OPTIONS gnat_init_options
95 #undef LANG_HOOKS_HANDLE_OPTION
96 #define LANG_HOOKS_HANDLE_OPTION gnat_handle_option
97 #undef LANG_HOOKS_POST_OPTIONS
98 #define LANG_HOOKS_POST_OPTIONS gnat_post_options
99 #undef LANG_HOOKS_PARSE_FILE
100 #define LANG_HOOKS_PARSE_FILE gnat_parse_file
101 #undef LANG_HOOKS_HASH_TYPES
102 #define LANG_HOOKS_HASH_TYPES false
103 #undef LANG_HOOKS_GETDECLS
104 #define LANG_HOOKS_GETDECLS lhd_return_null_tree_v
105 #undef LANG_HOOKS_PUSHDECL
106 #define LANG_HOOKS_PUSHDECL gnat_return_tree
107 #undef LANG_HOOKS_WRITE_GLOBALS
108 #define LANG_HOOKS_WRITE_GLOBALS gnat_write_global_declarations
109 #undef LANG_HOOKS_GET_ALIAS_SET
110 #define LANG_HOOKS_GET_ALIAS_SET gnat_get_alias_set
111 #undef LANG_HOOKS_PRINT_DECL
112 #define LANG_HOOKS_PRINT_DECL gnat_print_decl
113 #undef LANG_HOOKS_PRINT_TYPE
114 #define LANG_HOOKS_PRINT_TYPE gnat_print_type
115 #undef LANG_HOOKS_TYPE_MAX_SIZE
116 #define LANG_HOOKS_TYPE_MAX_SIZE gnat_type_max_size
117 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
118 #define LANG_HOOKS_DECL_PRINTABLE_NAME gnat_printable_name
119 #undef LANG_HOOKS_DWARF_NAME
120 #define LANG_HOOKS_DWARF_NAME gnat_dwarf_name
121 #undef LANG_HOOKS_GIMPLIFY_EXPR
122 #define LANG_HOOKS_GIMPLIFY_EXPR gnat_gimplify_expr
123 #undef LANG_HOOKS_TYPE_FOR_MODE
124 #define LANG_HOOKS_TYPE_FOR_MODE gnat_type_for_mode
125 #undef LANG_HOOKS_TYPE_FOR_SIZE
126 #define LANG_HOOKS_TYPE_FOR_SIZE gnat_type_for_size
127 #undef LANG_HOOKS_TYPES_COMPATIBLE_P
128 #define LANG_HOOKS_TYPES_COMPATIBLE_P gnat_types_compatible_p
129 #undef LANG_HOOKS_GET_SUBRANGE_BOUNDS
130 #define LANG_HOOKS_GET_SUBRANGE_BOUNDS gnat_get_subrange_bounds
131 #undef LANG_HOOKS_ATTRIBUTE_TABLE
132 #define LANG_HOOKS_ATTRIBUTE_TABLE gnat_internal_attribute_table
133 #undef LANG_HOOKS_BUILTIN_FUNCTION
134 #define LANG_HOOKS_BUILTIN_FUNCTION gnat_builtin_function
135 #undef LANG_HOOKS_EH_PERSONALITY
136 #define LANG_HOOKS_EH_PERSONALITY gnat_eh_personality
137 #undef LANG_HOOKS_DEEP_UNSHARING
138 #define LANG_HOOKS_DEEP_UNSHARING true
140 struct lang_hooks lang_hooks
= LANG_HOOKS_INITIALIZER
;
142 /* This symbol needs to be defined for the front-end. */
143 void *callgraph_info_file
= NULL
;
145 /* How much we want of our DWARF extensions. Some of our dwarf+ extensions
146 are incompatible with regular GDB versions, so we must make sure to only
147 produce them on explicit request. This is eventually reflected into the
148 use_gnu_debug_info_extensions common flag for later processing. */
149 static int gnat_dwarf_extensions
= 0;
151 /* Command-line argc and argv. These variables are global
152 since they are imported in back_end.adb. */
153 unsigned int save_argc
;
154 const char **save_argv
;
156 /* GNAT argc and argv. */
157 extern int gnat_argc
;
158 extern char **gnat_argv
;
160 /* Declare functions we use as part of startup. */
161 extern void __gnat_initialize (void *);
162 extern void __gnat_install_SEH_handler (void *);
163 extern void adainit (void);
164 extern void _ada_gnat1drv (void);
166 /* The parser for the language. For us, we process the GNAT tree. */
169 gnat_parse_file (int set_yydebug ATTRIBUTE_UNUSED
)
173 /* Call the target specific initializations. */
174 __gnat_initialize (NULL
);
176 /* ??? Call the SEH initialization routine. This is to workaround
177 a bootstrap path problem. The call below should be removed at some
178 point and the SEH pointer passed to __gnat_initialize() above. */
179 __gnat_install_SEH_handler((void *)seh
);
181 /* Call the front-end elaboration procedures. */
184 /* Call the front end. */
188 /* Decode all the language specific options that cannot be decoded by GCC.
189 The option decoding phase of GCC calls this routine on the flags that
190 are marked as Ada-specific. Return true on success or false on failure. */
193 gnat_handle_option (size_t scode
, const char *arg ATTRIBUTE_UNUSED
, int value
,
194 int kind ATTRIBUTE_UNUSED
,
195 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
)
197 enum opt_code code
= (enum opt_code
) scode
;
203 warn_uninitialized
= value
;
206 case OPT_Wmissing_prototypes
:
207 case OPT_Wstrict_prototypes
:
208 case OPT_Wwrite_strings
:
210 case OPT_Wvariadic_macros
:
211 case OPT_Wold_style_definition
:
212 case OPT_Wmissing_format_attribute
:
213 case OPT_Woverlength_strings
:
214 /* These are used in the GCC Makefile. */
217 case OPT_feliminate_unused_debug_types
:
218 /* We arrange for post_option to be able to only set the corresponding
219 flag to 1 when explicitly requested by the user. We expect the
220 default flag value to be either 0 or positive, and expose a positive
221 -f as a negative value to post_option. */
222 flag_eliminate_unused_debug_types
= -value
;
226 gnat_dwarf_extensions
= 1;
230 warning (0, "%<-gnat%> misspelled as %<-gant%>");
232 /* ... fall through ... */
240 /* These are handled by the front-end. */
250 /* Return language mask for option processing. */
253 gnat_option_lang_mask (void)
258 /* Initialize for option processing. */
261 gnat_init_options (unsigned int decoded_options_count
,
262 struct cl_decoded_option
*decoded_options
)
264 /* Reconstruct an argv array for use of back_end.adb.
266 ??? back_end.adb should not rely on this; instead, it should work
267 with decoded options without such reparsing, to ensure
268 consistency in how options are decoded. */
271 save_argv
= XNEWVEC (const char *, 2 * decoded_options_count
+ 1);
273 for (i
= 0; i
< decoded_options_count
; i
++)
275 if (decoded_options
[i
].errors
276 || decoded_options
[i
].opt_index
== OPT_SPECIAL_unknown
)
278 gcc_assert (decoded_options
[i
].canonical_option_num_elements
>= 1
279 && decoded_options
[i
].canonical_option_num_elements
<= 2);
280 save_argv
[save_argc
++] = decoded_options
[i
].canonical_option
[0];
281 if (decoded_options
[i
].canonical_option_num_elements
>= 2)
282 save_argv
[save_argc
++] = decoded_options
[i
].canonical_option
[1];
284 save_argv
[save_argc
] = NULL
;
286 gnat_argv
= (char **) xmalloc (sizeof (save_argv
[0]));
287 gnat_argv
[0] = xstrdup (save_argv
[0]); /* name of the command */
290 /* Uninitialized really means uninitialized in Ada. */
291 flag_zero_initialized_in_bss
= 0;
294 /* Post-switch processing. */
297 gnat_post_options (const char **pfilename ATTRIBUTE_UNUSED
)
299 /* Excess precision other than "fast" requires front-end
301 if (flag_excess_precision_cmdline
== EXCESS_PRECISION_STANDARD
302 && TARGET_FLT_EVAL_METHOD_NON_DEFAULT
)
303 sorry ("-fexcess-precision=standard for Ada");
304 flag_excess_precision_cmdline
= EXCESS_PRECISION_FAST
;
306 /* ??? The warning machinery is outsmarted by Ada. */
307 warn_unused_parameter
= 0;
309 /* No psABI change warnings for Ada. */
312 /* Force eliminate_unused_debug_types to 0 unless an explicit positive
313 -f has been passed. This forces the default to 0 for Ada, which might
314 differ from the common default. */
315 if (flag_eliminate_unused_debug_types
< 0)
316 flag_eliminate_unused_debug_types
= 1;
318 flag_eliminate_unused_debug_types
= 0;
320 /* Reflect the explicit request of DWARF extensions into the common
321 flag for use by later passes. */
322 if (write_symbols
== DWARF2_DEBUG
)
323 use_gnu_debug_info_extensions
= gnat_dwarf_extensions
> 0;
328 /* Here is the function to handle the compiler error processing in GCC. */
331 internal_error_function (diagnostic_context
*context
,
332 const char *msgid
, va_list *ap
)
335 char *buffer
, *p
, *loc
;
336 String_Template temp
, temp_loc
;
337 Fat_Pointer fp
, fp_loc
;
340 /* Warn if plugins present. */
343 /* Reset the pretty-printer. */
344 pp_clear_output_area (context
->printer
);
346 /* Format the message into the pretty-printer. */
347 tinfo
.format_spec
= msgid
;
349 tinfo
.err_no
= errno
;
350 pp_format_verbatim (context
->printer
, &tinfo
);
352 /* Extract a (writable) pointer to the formatted text. */
353 buffer
= xstrdup (pp_formatted_text (context
->printer
));
355 /* Go up to the first newline. */
356 for (p
= buffer
; *p
; p
++)
364 temp
.High_Bound
= p
- buffer
;
368 s
= expand_location (input_location
);
369 if (context
->show_column
&& s
.column
!= 0)
370 asprintf (&loc
, "%s:%d:%d", s
.file
, s
.line
, s
.column
);
372 asprintf (&loc
, "%s:%d", s
.file
, s
.line
);
373 temp_loc
.Low_Bound
= 1;
374 temp_loc
.High_Bound
= strlen (loc
);
375 fp_loc
.Bounds
= &temp_loc
;
378 Current_Error_Node
= error_gnat_node
;
379 Compiler_Abort (fp
, -1, fp_loc
);
382 /* Perform all the initialization steps that are language-specific. */
387 /* Do little here, most of the standard declarations are set up after the
388 front-end has been run. Use the same `char' as C, this doesn't really
389 matter since we'll use the explicit `unsigned char' for Character. */
390 build_common_tree_nodes (flag_signed_char
);
392 /* In Ada, we use the unsigned type corresponding to the width of Pmode as
393 SIZETYPE. In most cases when ptr_mode and Pmode differ, C will use the
394 width of ptr_mode for SIZETYPE, but we get better code using the width
395 of Pmode. Note that, although we manipulate negative offsets for some
396 internal constructs and rely on compile time overflow detection in size
397 computations, using unsigned types for SIZETYPEs is fine since they are
398 treated specially by the middle-end, in particular sign-extended. */
399 size_type_node
= gnat_type_for_mode (Pmode
, 1);
400 set_sizetype (size_type_node
);
401 TYPE_NAME (sizetype
) = get_identifier ("size_type");
403 /* In Ada, we use an unsigned 8-bit type for the default boolean type. */
404 boolean_type_node
= make_unsigned_type (8);
405 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
406 SET_TYPE_RM_MAX_VALUE (boolean_type_node
,
407 build_int_cst (boolean_type_node
, 1));
408 SET_TYPE_RM_SIZE (boolean_type_node
, bitsize_int (1));
410 build_common_tree_nodes_2 (0);
411 sbitsize_one_node
= sbitsize_int (1);
412 sbitsize_unit_node
= sbitsize_int (BITS_PER_UNIT
);
413 boolean_true_node
= TYPE_MAX_VALUE (boolean_type_node
);
415 ptr_void_type_node
= build_pointer_type (void_type_node
);
417 /* Show that REFERENCE_TYPEs are internal and should be Pmode. */
418 internal_reference_types ();
420 /* Register our internal error function. */
421 global_dc
->internal_error
= &internal_error_function
;
426 /* If we are using the GCC mechanism to process exception handling, we
427 have to register the personality routine for Ada and to initialize
428 various language dependent hooks. */
431 gnat_init_gcc_eh (void)
433 #ifdef DWARF2_UNWIND_INFO
434 /* lang_dependent_init already called dwarf2out_frame_init if true. */
435 int dwarf2out_frame_initialized
= dwarf2out_do_frame ();
438 /* We shouldn't do anything if the No_Exceptions_Handler pragma is set,
439 though. This could for instance lead to the emission of tables with
440 references to symbols (such as the Ada eh personality routine) within
441 libraries we won't link against. */
442 if (No_Exception_Handlers_Set ())
445 /* Tell GCC we are handling cleanup actions through exception propagation.
446 This opens possibilities that we don't take advantage of yet, but is
447 nonetheless necessary to ensure that fixup code gets assigned to the
448 right exception regions. */
449 using_eh_for_cleanups ();
451 /* Turn on -fexceptions and -fnon-call-exceptions. The first one triggers
452 the generation of the necessary exception tables. The second one is
453 useful for two reasons: 1/ we map some asynchronous signals like SEGV to
454 exceptions, so we need to ensure that the insns which can lead to such
455 signals are correctly attached to the exception region they pertain to,
456 2/ Some calls to pure subprograms are handled as libcall blocks and then
457 marked as "cannot trap" if the flag is not set (see emit_libcall_block).
458 We should not let this be since it is possible for such calls to actually
461 flag_non_call_exceptions
= 1;
464 #ifdef DWARF2_UNWIND_INFO
465 if (!dwarf2out_frame_initialized
&& dwarf2out_do_frame ())
466 dwarf2out_frame_init ();
470 /* Print language-specific items in declaration NODE. */
473 gnat_print_decl (FILE *file
, tree node
, int indent
)
475 switch (TREE_CODE (node
))
478 print_node (file
, "corresponding var",
479 DECL_CONST_CORRESPONDING_VAR (node
), indent
+ 4);
483 print_node (file
, "original field", DECL_ORIGINAL_FIELD (node
),
488 print_node (file
, "renamed object", DECL_RENAMED_OBJECT (node
),
497 /* Print language-specific items in type NODE. */
500 gnat_print_type (FILE *file
, tree node
, int indent
)
502 switch (TREE_CODE (node
))
505 print_node (file
, "ci/co list", TYPE_CI_CO_LIST (node
), indent
+ 4);
509 if (TYPE_MODULAR_P (node
))
510 print_node_brief (file
, "modulus", TYPE_MODULUS (node
), indent
+ 4);
511 else if (TYPE_HAS_ACTUAL_BOUNDS_P (node
))
512 print_node (file
, "actual bounds", TYPE_ACTUAL_BOUNDS (node
),
514 else if (TYPE_VAX_FLOATING_POINT_P (node
))
517 print_node (file
, "index type", TYPE_INDEX_TYPE (node
), indent
+ 4);
519 /* ... fall through ... */
523 print_node_brief (file
, "RM size", TYPE_RM_SIZE (node
), indent
+ 4);
525 /* ... fall through ... */
528 print_node_brief (file
, "RM min", TYPE_RM_MIN_VALUE (node
), indent
+ 4);
529 print_node_brief (file
, "RM max", TYPE_RM_MAX_VALUE (node
), indent
+ 4);
533 print_node (file
,"actual bounds", TYPE_ACTUAL_BOUNDS (node
), indent
+ 4);
537 print_node (file
,"representative array",
538 TYPE_REPRESENTATIVE_ARRAY (node
), indent
+ 4);
542 if (TYPE_FAT_POINTER_P (node
) || TYPE_CONTAINS_TEMPLATE_P (node
))
543 print_node (file
, "unconstrained array",
544 TYPE_UNCONSTRAINED_ARRAY (node
), indent
+ 4);
546 print_node (file
, "Ada size", TYPE_ADA_SIZE (node
), indent
+ 4);
550 case QUAL_UNION_TYPE
:
551 print_node (file
, "Ada size", TYPE_ADA_SIZE (node
), indent
+ 4);
559 /* Return the name to be printed for DECL. */
562 gnat_printable_name (tree decl
, int verbosity
)
564 const char *coded_name
= IDENTIFIER_POINTER (DECL_NAME (decl
));
565 char *ada_name
= (char *) ggc_alloc_atomic (strlen (coded_name
) * 2 + 60);
567 __gnat_decode (coded_name
, ada_name
, 0);
569 if (verbosity
== 2 && !DECL_IS_BUILTIN (decl
))
571 Set_Identifier_Casing (ada_name
, DECL_SOURCE_FILE (decl
));
572 return ggc_strdup (Name_Buffer
);
578 /* Return the name to be used in DWARF debug info for DECL. */
581 gnat_dwarf_name (tree decl
, int verbosity ATTRIBUTE_UNUSED
)
583 gcc_assert (DECL_P (decl
));
584 return (const char *) IDENTIFIER_POINTER (DECL_NAME (decl
));
587 /* Do nothing (return the tree node passed). */
590 gnat_return_tree (tree t
)
595 /* Get the alias set corresponding to a type or expression. */
597 static alias_set_type
598 gnat_get_alias_set (tree type
)
600 /* If this is a padding type, use the type of the first field. */
601 if (TYPE_IS_PADDING_P (type
))
602 return get_alias_set (TREE_TYPE (TYPE_FIELDS (type
)));
604 /* If the type is an unconstrained array, use the type of the
605 self-referential array we make. */
606 else if (TREE_CODE (type
) == UNCONSTRAINED_ARRAY_TYPE
)
608 get_alias_set (TREE_TYPE (TREE_TYPE (TYPE_FIELDS (TREE_TYPE (type
)))));
610 /* If the type can alias any other types, return the alias set 0. */
611 else if (TYPE_P (type
)
612 && TYPE_UNIVERSAL_ALIASING_P (TYPE_MAIN_VARIANT (type
)))
618 /* GNU_TYPE is a type. Return its maximum size in bytes, if known,
619 as a constant when possible. */
622 gnat_type_max_size (const_tree gnu_type
)
624 /* First see what we can get from TYPE_SIZE_UNIT, which might not
625 be constant even for simple expressions if it has already been
626 elaborated and possibly replaced by a VAR_DECL. */
627 tree max_unitsize
= max_size (TYPE_SIZE_UNIT (gnu_type
), true);
629 /* If we don't have a constant, see what we can get from TYPE_ADA_SIZE,
630 which should stay untouched. */
631 if (!host_integerp (max_unitsize
, 1)
632 && (TREE_CODE (gnu_type
) == RECORD_TYPE
633 || TREE_CODE (gnu_type
) == UNION_TYPE
634 || TREE_CODE (gnu_type
) == QUAL_UNION_TYPE
)
635 && TYPE_ADA_SIZE (gnu_type
))
637 tree max_adasize
= max_size (TYPE_ADA_SIZE (gnu_type
), true);
639 /* If we have succeeded in finding a constant, round it up to the
640 type's alignment and return the result in units. */
641 if (host_integerp (max_adasize
, 1))
643 = size_binop (CEIL_DIV_EXPR
,
644 round_up (max_adasize
, TYPE_ALIGN (gnu_type
)),
651 /* GNU_TYPE is a subtype of an integral type. Set LOWVAL to the low bound
652 and HIGHVAL to the high bound, respectively. */
655 gnat_get_subrange_bounds (const_tree gnu_type
, tree
*lowval
, tree
*highval
)
657 *lowval
= TYPE_MIN_VALUE (gnu_type
);
658 *highval
= TYPE_MAX_VALUE (gnu_type
);
661 /* GNU_TYPE is a type. Determine if it should be passed by reference by
665 default_pass_by_ref (tree gnu_type
)
667 /* We pass aggregates by reference if they are sufficiently large. The
668 choice of constant here is somewhat arbitrary. We also pass by
669 reference if the target machine would either pass or return by
670 reference. Strictly speaking, we need only check the return if this
671 is an In Out parameter, but it's probably best to err on the side of
672 passing more things by reference. */
674 if (pass_by_reference (NULL
, TYPE_MODE (gnu_type
), gnu_type
, 1))
677 if (targetm
.calls
.return_in_memory (gnu_type
, NULL_TREE
))
680 if (AGGREGATE_TYPE_P (gnu_type
)
681 && (!host_integerp (TYPE_SIZE (gnu_type
), 1)
682 || 0 < compare_tree_int (TYPE_SIZE (gnu_type
),
683 8 * TYPE_ALIGN (gnu_type
))))
689 /* GNU_TYPE is the type of a subprogram parameter. Determine from the type if
690 it should be passed by reference. */
693 must_pass_by_ref (tree gnu_type
)
695 /* We pass only unconstrained objects, those required by the language
696 to be passed by reference, and objects of variable size. The latter
697 is more efficient, avoids problems with variable size temporaries,
698 and does not produce compatibility problems with C, since C does
699 not have such objects. */
700 return (TREE_CODE (gnu_type
) == UNCONSTRAINED_ARRAY_TYPE
701 || TREE_ADDRESSABLE (gnu_type
)
702 || (TYPE_SIZE (gnu_type
)
703 && TREE_CODE (TYPE_SIZE (gnu_type
)) != INTEGER_CST
));
706 /* Return the size of the FP mode with precision PREC. */
709 fp_prec_to_size (int prec
)
711 enum machine_mode mode
;
713 for (mode
= GET_CLASS_NARROWEST_MODE (MODE_FLOAT
); mode
!= VOIDmode
;
714 mode
= GET_MODE_WIDER_MODE (mode
))
715 if (GET_MODE_PRECISION (mode
) == prec
)
716 return GET_MODE_BITSIZE (mode
);
721 /* Return the precision of the FP mode with size SIZE. */
724 fp_size_to_prec (int size
)
726 enum machine_mode mode
;
728 for (mode
= GET_CLASS_NARROWEST_MODE (MODE_FLOAT
); mode
!= VOIDmode
;
729 mode
= GET_MODE_WIDER_MODE (mode
))
730 if (GET_MODE_BITSIZE (mode
) == size
)
731 return GET_MODE_PRECISION (mode
);
736 static GTY(()) tree gnat_eh_personality_decl
;
739 gnat_eh_personality (void)
741 if (!gnat_eh_personality_decl
)
742 gnat_eh_personality_decl
743 = build_personality_function (USING_SJLJ_EXCEPTIONS
744 ? "__gnat_eh_personality_sj"
745 : "__gnat_eh_personality");
747 return gnat_eh_personality_decl
;
750 #include "gt-ada-misc.h"