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"
46 #include "langhooks.h"
47 #include "langhooks-def.h"
50 #include "tree-inline.h"
53 #include "adadecode.h"
67 static bool gnat_init (void);
68 static unsigned int gnat_init_options (unsigned int, const char **);
69 static int gnat_handle_option (size_t, const char *, int, int);
70 static bool gnat_post_options (const char **);
71 static alias_set_type gnat_get_alias_set (tree);
72 static void gnat_print_decl (FILE *, tree, int);
73 static void gnat_print_type (FILE *, tree, int);
74 static const char *gnat_printable_name (tree, int);
75 static const char *gnat_dwarf_name (tree, int);
76 static tree gnat_return_tree (tree);
77 static void gnat_parse_file (int);
78 static void internal_error_function (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_INIT_OPTIONS
92 #define LANG_HOOKS_INIT_OPTIONS gnat_init_options
93 #undef LANG_HOOKS_HANDLE_OPTION
94 #define LANG_HOOKS_HANDLE_OPTION gnat_handle_option
95 #undef LANG_HOOKS_POST_OPTIONS
96 #define LANG_HOOKS_POST_OPTIONS gnat_post_options
97 #undef LANG_HOOKS_PARSE_FILE
98 #define LANG_HOOKS_PARSE_FILE gnat_parse_file
99 #undef LANG_HOOKS_HASH_TYPES
100 #define LANG_HOOKS_HASH_TYPES false
101 #undef LANG_HOOKS_GETDECLS
102 #define LANG_HOOKS_GETDECLS lhd_return_null_tree_v
103 #undef LANG_HOOKS_PUSHDECL
104 #define LANG_HOOKS_PUSHDECL gnat_return_tree
105 #undef LANG_HOOKS_WRITE_GLOBALS
106 #define LANG_HOOKS_WRITE_GLOBALS gnat_write_global_declarations
107 #undef LANG_HOOKS_GET_ALIAS_SET
108 #define LANG_HOOKS_GET_ALIAS_SET gnat_get_alias_set
109 #undef LANG_HOOKS_PRINT_DECL
110 #define LANG_HOOKS_PRINT_DECL gnat_print_decl
111 #undef LANG_HOOKS_PRINT_TYPE
112 #define LANG_HOOKS_PRINT_TYPE gnat_print_type
113 #undef LANG_HOOKS_TYPE_MAX_SIZE
114 #define LANG_HOOKS_TYPE_MAX_SIZE gnat_type_max_size
115 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
116 #define LANG_HOOKS_DECL_PRINTABLE_NAME gnat_printable_name
117 #undef LANG_HOOKS_DWARF_NAME
118 #define LANG_HOOKS_DWARF_NAME gnat_dwarf_name
119 #undef LANG_HOOKS_GIMPLIFY_EXPR
120 #define LANG_HOOKS_GIMPLIFY_EXPR gnat_gimplify_expr
121 #undef LANG_HOOKS_TYPE_FOR_MODE
122 #define LANG_HOOKS_TYPE_FOR_MODE gnat_type_for_mode
123 #undef LANG_HOOKS_TYPE_FOR_SIZE
124 #define LANG_HOOKS_TYPE_FOR_SIZE gnat_type_for_size
125 #undef LANG_HOOKS_TYPES_COMPATIBLE_P
126 #define LANG_HOOKS_TYPES_COMPATIBLE_P gnat_types_compatible_p
127 #undef LANG_HOOKS_GET_SUBRANGE_BOUNDS
128 #define LANG_HOOKS_GET_SUBRANGE_BOUNDS gnat_get_subrange_bounds
129 #undef LANG_HOOKS_ATTRIBUTE_TABLE
130 #define LANG_HOOKS_ATTRIBUTE_TABLE gnat_internal_attribute_table
131 #undef LANG_HOOKS_BUILTIN_FUNCTION
132 #define LANG_HOOKS_BUILTIN_FUNCTION gnat_builtin_function
133 #undef LANG_HOOKS_EH_PERSONALITY
134 #define LANG_HOOKS_EH_PERSONALITY gnat_eh_personality
136 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
138 /* How much we want of our DWARF extensions. Some of our dwarf+ extensions
139 are incompatible with regular GDB versions, so we must make sure to only
140 produce them on explicit request. This is eventually reflected into the
141 use_gnu_debug_info_extensions common flag for later processing. */
142 static int gnat_dwarf_extensions = 0;
144 /* Command-line argc and argv. These variables are global
145 since they are imported in back_end.adb. */
146 unsigned int save_argc;
147 const char **save_argv;
149 /* GNAT argc and argv. */
150 extern int gnat_argc;
151 extern char **gnat_argv;
153 /* Declare functions we use as part of startup. */
154 extern void __gnat_initialize (void *);
155 extern void __gnat_install_SEH_handler (void *);
156 extern void adainit (void);
157 extern void _ada_gnat1drv (void);
159 /* The parser for the language. For us, we process the GNAT tree. */
162 gnat_parse_file (int set_yydebug ATTRIBUTE_UNUSED)
166 /* Call the target specific initializations. */
167 __gnat_initialize (NULL);
169 /* ??? Call the SEH initialization routine. This is to workaround
170 a bootstrap path problem. The call below should be removed at some
171 point and the SEH pointer passed to __gnat_initialize() above. */
172 __gnat_install_SEH_handler((void *)seh);
174 /* Call the front-end elaboration procedures. */
177 /* Call the front end. */
181 /* Decode all the language specific options that cannot be decoded by GCC.
182 The option decoding phase of GCC calls this routine on the flags that
183 it cannot decode. Return the number of consecutive arguments from ARGV
184 that have been successfully decoded or 0 on failure. */
187 gnat_handle_option (size_t scode, const char *arg, int value,
188 int kind ATTRIBUTE_UNUSED)
190 const struct cl_option *option = &cl_options[scode];
191 enum opt_code code = (enum opt_code) scode;
194 if (arg == NULL && (option->flags & (CL_JOINED | CL_SEPARATE)))
196 error ("missing argument to \"-%s\"", option->opt_text);
203 q = XNEWVEC (char, sizeof("-I") + strlen (arg));
206 gnat_argv[gnat_argc] = q;
213 /* We save the value of warn_uninitialized, since if they put
214 -Wuninitialized on the command line, we need to generate a
215 warning about not using it without also specifying -O. */
216 if (warn_uninitialized != 1)
217 warn_uninitialized = (value ? 2 : 0);
220 /* These are used in the GCC Makefile. */
221 case OPT_Wmissing_prototypes:
222 case OPT_Wstrict_prototypes:
223 case OPT_Wwrite_strings:
225 case OPT_Wvariadic_macros:
226 case OPT_Wold_style_definition:
227 case OPT_Wmissing_format_attribute:
228 case OPT_Woverlength_strings:
231 /* This is handled by the front-end. */
236 gnat_argv[gnat_argc] = xstrdup ("-nostdlib");
240 case OPT_feliminate_unused_debug_types:
241 /* We arrange for post_option to be able to only set the corresponding
242 flag to 1 when explicitly requested by the user. We expect the
243 default flag value to be either 0 or positive, and expose a positive
244 -f as a negative value to post_option. */
245 flag_eliminate_unused_debug_types = -value;
249 gnat_argv[gnat_argc] = xstrdup ("-fRTS");
254 warning (0, "%<-gnat%> misspelled as %<-gant%>");
256 /* ... fall through ... */
259 /* Recopy the switches without the 'gnat' prefix. */
260 gnat_argv[gnat_argc] = XNEWVEC (char, strlen (arg) + 2);
261 gnat_argv[gnat_argc][0] = '-';
262 strcpy (gnat_argv[gnat_argc] + 1, arg);
267 gnat_argv[gnat_argc] = xstrdup ("-O");
269 gnat_argv[gnat_argc] = xstrdup (arg);
274 gnat_dwarf_extensions = 1;
284 /* Initialize for option processing. */
287 gnat_init_options (unsigned int argc, const char **argv)
289 /* Initialize gnat_argv with save_argv size. */
290 gnat_argv = (char **) xmalloc ((argc + 1) * sizeof (argv[0]));
291 gnat_argv[0] = xstrdup (argv[0]); /* name of the command */
297 /* Uninitialized really means uninitialized in Ada. */
298 flag_zero_initialized_in_bss = 0;
303 /* Post-switch processing. */
306 gnat_post_options (const char **pfilename ATTRIBUTE_UNUSED)
308 /* Excess precision other than "fast" requires front-end
310 if (flag_excess_precision_cmdline == EXCESS_PRECISION_STANDARD
311 && TARGET_FLT_EVAL_METHOD_NON_DEFAULT)
312 sorry ("-fexcess-precision=standard for Ada");
313 flag_excess_precision_cmdline = EXCESS_PRECISION_FAST;
315 /* ??? The warning machinery is outsmarted by Ada. */
316 warn_unused_parameter = 0;
318 /* No psABI change warnings for Ada. */
321 /* Force eliminate_unused_debug_types to 0 unless an explicit positive
322 -f has been passed. This forces the default to 0 for Ada, which might
323 differ from the common default. */
324 if (flag_eliminate_unused_debug_types < 0)
325 flag_eliminate_unused_debug_types = 1;
327 flag_eliminate_unused_debug_types = 0;
329 /* Reflect the explicit request of DWARF extensions into the common
330 flag for use by later passes. */
331 if (write_symbols == DWARF2_DEBUG)
332 use_gnu_debug_info_extensions = gnat_dwarf_extensions > 0;
337 /* Here is the function to handle the compiler error processing in GCC. */
340 internal_error_function (const char *msgid, va_list *ap)
343 char *buffer, *p, *loc;
344 String_Template temp, temp_loc;
345 Fat_Pointer fp, fp_loc;
348 /* Reset the pretty-printer. */
349 pp_clear_output_area (global_dc->printer);
351 /* Format the message into the pretty-printer. */
352 tinfo.format_spec = msgid;
354 tinfo.err_no = errno;
355 pp_format_verbatim (global_dc->printer, &tinfo);
357 /* Extract a (writable) pointer to the formatted text. */
358 buffer = xstrdup (pp_formatted_text (global_dc->printer));
360 /* Go up to the first newline. */
361 for (p = buffer; *p; p++)
369 temp.High_Bound = p - buffer;
373 s = expand_location (input_location);
374 if (flag_show_column && s.column != 0)
375 asprintf (&loc, "%s:%d:%d", s.file, s.line, s.column);
377 asprintf (&loc, "%s:%d", s.file, s.line);
378 temp_loc.Low_Bound = 1;
379 temp_loc.High_Bound = strlen (loc);
380 fp_loc.Bounds = &temp_loc;
383 Current_Error_Node = error_gnat_node;
384 Compiler_Abort (fp, -1, fp_loc);
387 /* Perform all the initialization steps that are language-specific. */
392 /* Do little here, most of the standard declarations are set up after the
393 front-end has been run. Use the same `char' as C, this doesn't really
394 matter since we'll use the explicit `unsigned char' for Character. */
395 build_common_tree_nodes (flag_signed_char);
397 /* In Ada, we use the unsigned type corresponding to the width of Pmode as
398 SIZETYPE. In most cases when ptr_mode and Pmode differ, C will use the
399 width of ptr_mode for SIZETYPE, but we get better code using the width
400 of Pmode. Note that, although we manipulate negative offsets for some
401 internal constructs and rely on compile time overflow detection in size
402 computations, using unsigned types for SIZETYPEs is fine since they are
403 treated specially by the middle-end, in particular sign-extended. */
404 size_type_node = gnat_type_for_mode (Pmode, 1);
405 set_sizetype (size_type_node);
406 TYPE_NAME (sizetype) = get_identifier ("size_type");
408 /* In Ada, we use an unsigned 8-bit type for the default boolean type. */
409 boolean_type_node = make_unsigned_type (8);
410 TREE_SET_CODE (boolean_type_node, BOOLEAN_TYPE);
411 SET_TYPE_RM_MAX_VALUE (boolean_type_node,
412 build_int_cst (boolean_type_node, 1));
413 SET_TYPE_RM_SIZE (boolean_type_node, bitsize_int (1));
415 build_common_tree_nodes_2 (0);
416 sbitsize_one_node = sbitsize_int (1);
417 sbitsize_unit_node = sbitsize_int (BITS_PER_UNIT);
418 boolean_true_node = TYPE_MAX_VALUE (boolean_type_node);
420 ptr_void_type_node = build_pointer_type (void_type_node);
422 /* Show that REFERENCE_TYPEs are internal and should be Pmode. */
423 internal_reference_types ();
425 /* Add the input filename as the last argument. */
426 if (main_input_filename)
428 gnat_argv[gnat_argc] = xstrdup (main_input_filename);
430 gnat_argv[gnat_argc] = NULL;
433 /* Register our internal error function. */
434 global_dc->internal_error = &internal_error_function;
439 /* If we are using the GCC mechanism to process exception handling, we
440 have to register the personality routine for Ada and to initialize
441 various language dependent hooks. */
444 gnat_init_gcc_eh (void)
446 #ifdef DWARF2_UNWIND_INFO
447 /* lang_dependent_init already called dwarf2out_frame_init if true. */
448 int dwarf2out_frame_initialized = dwarf2out_do_frame ();
451 /* We shouldn't do anything if the No_Exceptions_Handler pragma is set,
452 though. This could for instance lead to the emission of tables with
453 references to symbols (such as the Ada eh personality routine) within
454 libraries we won't link against. */
455 if (No_Exception_Handlers_Set ())
458 /* Tell GCC we are handling cleanup actions through exception propagation.
459 This opens possibilities that we don't take advantage of yet, but is
460 nonetheless necessary to ensure that fixup code gets assigned to the
461 right exception regions. */
462 using_eh_for_cleanups ();
464 /* Turn on -fexceptions and -fnon-call-exceptions. The first one triggers
465 the generation of the necessary exception runtime tables. The second one
466 is useful for two reasons: 1/ we map some asynchronous signals like SEGV
467 to exceptions, so we need to ensure that the insns which can lead to such
468 signals are correctly attached to the exception region they pertain to,
469 2/ Some calls to pure subprograms are handled as libcall blocks and then
470 marked as "cannot trap" if the flag is not set (see emit_libcall_block).
471 We should not let this be since it is possible for such calls to actually
474 flag_non_call_exceptions = 1;
477 #ifdef DWARF2_UNWIND_INFO
478 if (!dwarf2out_frame_initialized && dwarf2out_do_frame ())
479 dwarf2out_frame_init ();
483 /* Print language-specific items in declaration NODE. */
486 gnat_print_decl (FILE *file, tree node, int indent)
488 switch (TREE_CODE (node))
491 print_node (file, "corresponding var",
492 DECL_CONST_CORRESPONDING_VAR (node), indent + 4);
496 print_node (file, "original field", DECL_ORIGINAL_FIELD (node),
501 print_node (file, "renamed object", DECL_RENAMED_OBJECT (node),
510 /* Print language-specific items in type NODE. */
513 gnat_print_type (FILE *file, tree node, int indent)
515 switch (TREE_CODE (node))
518 print_node (file, "ci/co list", TYPE_CI_CO_LIST (node), indent + 4);
522 if (TYPE_MODULAR_P (node))
523 print_node_brief (file, "modulus", TYPE_MODULUS (node), indent + 4);
524 else if (TYPE_HAS_ACTUAL_BOUNDS_P (node))
525 print_node (file, "actual bounds", TYPE_ACTUAL_BOUNDS (node),
527 else if (TYPE_VAX_FLOATING_POINT_P (node))
530 print_node (file, "index type", TYPE_INDEX_TYPE (node), indent + 4);
532 /* ... fall through ... */
536 print_node_brief (file, "RM size", TYPE_RM_SIZE (node), indent + 4);
538 /* ... fall through ... */
541 print_node_brief (file, "RM min", TYPE_RM_MIN_VALUE (node), indent + 4);
542 print_node_brief (file, "RM max", TYPE_RM_MAX_VALUE (node), indent + 4);
546 print_node (file,"actual bounds", TYPE_ACTUAL_BOUNDS (node), indent + 4);
550 print_node (file,"representative array",
551 TYPE_REPRESENTATIVE_ARRAY (node), indent + 4);
555 if (TYPE_FAT_POINTER_P (node) || TYPE_CONTAINS_TEMPLATE_P (node))
556 print_node (file, "unconstrained array",
557 TYPE_UNCONSTRAINED_ARRAY (node), indent + 4);
559 print_node (file, "Ada size", TYPE_ADA_SIZE (node), indent + 4);
563 case QUAL_UNION_TYPE:
564 print_node (file, "Ada size", TYPE_ADA_SIZE (node), indent + 4);
572 /* Return the name to be printed for DECL. */
575 gnat_printable_name (tree decl, int verbosity)
577 const char *coded_name = IDENTIFIER_POINTER (DECL_NAME (decl));
578 char *ada_name = (char *) ggc_alloc (strlen (coded_name) * 2 + 60);
580 __gnat_decode (coded_name, ada_name, 0);
582 if (verbosity == 2 && !DECL_IS_BUILTIN (decl))
584 Set_Identifier_Casing (ada_name, DECL_SOURCE_FILE (decl));
585 return ggc_strdup (Name_Buffer);
591 /* Return the name to be used in DWARF debug info for DECL. */
594 gnat_dwarf_name (tree decl, int verbosity ATTRIBUTE_UNUSED)
596 gcc_assert (DECL_P (decl));
597 return (const char *) IDENTIFIER_POINTER (DECL_NAME (decl));
600 /* Do nothing (return the tree node passed). */
603 gnat_return_tree (tree t)
608 /* Get the alias set corresponding to a type or expression. */
610 static alias_set_type
611 gnat_get_alias_set (tree type)
613 /* If this is a padding type, use the type of the first field. */
614 if (TYPE_IS_PADDING_P (type))
615 return get_alias_set (TREE_TYPE (TYPE_FIELDS (type)));
617 /* If the type is an unconstrained array, use the type of the
618 self-referential array we make. */
619 else if (TREE_CODE (type) == UNCONSTRAINED_ARRAY_TYPE)
621 get_alias_set (TREE_TYPE (TREE_TYPE (TYPE_FIELDS (TREE_TYPE (type)))));
623 /* If the type can alias any other types, return the alias set 0. */
624 else if (TYPE_P (type)
625 && TYPE_UNIVERSAL_ALIASING_P (TYPE_MAIN_VARIANT (type)))
631 /* GNU_TYPE is a type. Return its maximum size in bytes, if known,
632 as a constant when possible. */
635 gnat_type_max_size (const_tree gnu_type)
637 /* First see what we can get from TYPE_SIZE_UNIT, which might not
638 be constant even for simple expressions if it has already been
639 elaborated and possibly replaced by a VAR_DECL. */
640 tree max_unitsize = max_size (TYPE_SIZE_UNIT (gnu_type), true);
642 /* If we don't have a constant, see what we can get from TYPE_ADA_SIZE,
643 which should stay untouched. */
644 if (!host_integerp (max_unitsize, 1)
645 && (TREE_CODE (gnu_type) == RECORD_TYPE
646 || TREE_CODE (gnu_type) == UNION_TYPE
647 || TREE_CODE (gnu_type) == QUAL_UNION_TYPE)
648 && TYPE_ADA_SIZE (gnu_type))
650 tree max_adasize = max_size (TYPE_ADA_SIZE (gnu_type), true);
652 /* If we have succeeded in finding a constant, round it up to the
653 type's alignment and return the result in units. */
654 if (host_integerp (max_adasize, 1))
656 = size_binop (CEIL_DIV_EXPR,
657 round_up (max_adasize, TYPE_ALIGN (gnu_type)),
664 /* GNU_TYPE is a subtype of an integral type. Set LOWVAL to the low bound
665 and HIGHVAL to the high bound, respectively. */
668 gnat_get_subrange_bounds (const_tree gnu_type, tree *lowval, tree *highval)
670 *lowval = TYPE_MIN_VALUE (gnu_type);
671 *highval = TYPE_MAX_VALUE (gnu_type);
674 /* GNU_TYPE is a type. Determine if it should be passed by reference by
678 default_pass_by_ref (tree gnu_type)
680 /* We pass aggregates by reference if they are sufficiently large. The
681 choice of constant here is somewhat arbitrary. We also pass by
682 reference if the target machine would either pass or return by
683 reference. Strictly speaking, we need only check the return if this
684 is an In Out parameter, but it's probably best to err on the side of
685 passing more things by reference. */
687 if (pass_by_reference (NULL, TYPE_MODE (gnu_type), gnu_type, 1))
690 if (targetm.calls.return_in_memory (gnu_type, NULL_TREE))
693 if (AGGREGATE_TYPE_P (gnu_type)
694 && (!host_integerp (TYPE_SIZE (gnu_type), 1)
695 || 0 < compare_tree_int (TYPE_SIZE (gnu_type),
696 8 * TYPE_ALIGN (gnu_type))))
702 /* GNU_TYPE is the type of a subprogram parameter. Determine from the type if
703 it should be passed by reference. */
706 must_pass_by_ref (tree gnu_type)
708 /* We pass only unconstrained objects, those required by the language
709 to be passed by reference, and objects of variable size. The latter
710 is more efficient, avoids problems with variable size temporaries,
711 and does not produce compatibility problems with C, since C does
712 not have such objects. */
713 return (TREE_CODE (gnu_type) == UNCONSTRAINED_ARRAY_TYPE
714 || TREE_ADDRESSABLE (gnu_type)
715 || (TYPE_SIZE (gnu_type)
716 && TREE_CODE (TYPE_SIZE (gnu_type)) != INTEGER_CST));
719 /* This function is called by the front end to enumerate all the supported
720 modes for the machine. We pass a function which is called back with
721 the following integer parameters:
723 FLOAT_P nonzero if this represents a floating-point mode
724 COMPLEX_P nonzero is this represents a complex mode
725 COUNT count of number of items, nonzero for vector mode
726 PRECISION number of bits in data representation
727 MANTISSA number of bits in mantissa, if FP and known, else zero.
728 SIZE number of bits used to store data
729 ALIGN number of bits to which mode is aligned. */
732 enumerate_modes (void (*f) (int, int, int, int, int, int, unsigned int))
736 for (iloop = 0; iloop < NUM_MACHINE_MODES; iloop++)
738 enum machine_mode i = (enum machine_mode) iloop;
745 enum machine_mode inner_mode = i;
747 switch (GET_MODE_CLASS (i))
754 case MODE_COMPLEX_INT:
756 inner_mode = GET_MODE_INNER (i);
758 case MODE_COMPLEX_FLOAT:
761 inner_mode = GET_MODE_INNER (i);
763 case MODE_VECTOR_INT:
765 inner_mode = GET_MODE_INNER (i);
767 case MODE_VECTOR_FLOAT:
770 inner_mode = GET_MODE_INNER (i);
776 /* Skip this mode if it's one the front end doesn't need to know about
777 (e.g., the CC modes) or if there is no add insn for that mode (or
778 any wider mode), meaning it is not supported by the hardware. If
779 this a complex or vector mode, we care about the inner mode. */
780 for (j = inner_mode; j != VOIDmode; j = GET_MODE_WIDER_MODE (j))
781 if (optab_handler (add_optab, j)->insn_code != CODE_FOR_nothing)
786 const struct real_format *fmt = REAL_MODE_FORMAT (inner_mode);
791 if (!skip_p && j != VOIDmode)
792 (*f) (float_p, complex_p, vector_p ? GET_MODE_NUNITS (i) : 0,
793 GET_MODE_BITSIZE (i), mantissa,
794 GET_MODE_SIZE (i) * BITS_PER_UNIT, GET_MODE_ALIGNMENT (i));
798 /* Return the size of the FP mode with precision PREC. */
801 fp_prec_to_size (int prec)
803 enum machine_mode mode;
805 for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT); mode != VOIDmode;
806 mode = GET_MODE_WIDER_MODE (mode))
807 if (GET_MODE_PRECISION (mode) == prec)
808 return GET_MODE_BITSIZE (mode);
813 /* Return the precision of the FP mode with size SIZE. */
816 fp_size_to_prec (int size)
818 enum machine_mode mode;
820 for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT); mode != VOIDmode;
821 mode = GET_MODE_WIDER_MODE (mode))
822 if (GET_MODE_BITSIZE (mode) == size)
823 return GET_MODE_PRECISION (mode);
828 static GTY(()) tree gnat_eh_personality_decl;
831 gnat_eh_personality (void)
833 if (!gnat_eh_personality_decl)
834 gnat_eh_personality_decl
835 = build_personality_function (USING_SJLJ_EXCEPTIONS
836 ? "__gnat_eh_personality_sj"
837 : "__gnat_eh_personality");
839 return gnat_eh_personality_decl;
842 #include "gt-ada-misc.h"