1 /****************************************************************************
3 * GNAT COMPILER COMPONENTS *
7 * C Implementation File *
9 * Copyright (C) 1992-2009, 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);
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 int gnat_eh_type_covers (tree, tree);
78 static void gnat_parse_file (int);
79 static void internal_error_function (const char *, va_list *);
80 static tree gnat_type_max_size (const_tree);
81 static void gnat_get_subrange_bounds (const_tree, tree *, tree *);
82 static tree gnat_eh_personality (void);
84 /* Definitions for our language-specific hooks. */
86 #undef LANG_HOOKS_NAME
87 #define LANG_HOOKS_NAME "GNU Ada"
88 #undef LANG_HOOKS_IDENTIFIER_SIZE
89 #define LANG_HOOKS_IDENTIFIER_SIZE sizeof (struct tree_identifier)
90 #undef LANG_HOOKS_INIT
91 #define LANG_HOOKS_INIT gnat_init
92 #undef LANG_HOOKS_INIT_OPTIONS
93 #define LANG_HOOKS_INIT_OPTIONS gnat_init_options
94 #undef LANG_HOOKS_HANDLE_OPTION
95 #define LANG_HOOKS_HANDLE_OPTION gnat_handle_option
96 #undef LANG_HOOKS_POST_OPTIONS
97 #define LANG_HOOKS_POST_OPTIONS gnat_post_options
98 #undef LANG_HOOKS_PARSE_FILE
99 #define LANG_HOOKS_PARSE_FILE gnat_parse_file
100 #undef LANG_HOOKS_HASH_TYPES
101 #define LANG_HOOKS_HASH_TYPES false
102 #undef LANG_HOOKS_GETDECLS
103 #define LANG_HOOKS_GETDECLS lhd_return_null_tree_v
104 #undef LANG_HOOKS_PUSHDECL
105 #define LANG_HOOKS_PUSHDECL gnat_return_tree
106 #undef LANG_HOOKS_WRITE_GLOBALS
107 #define LANG_HOOKS_WRITE_GLOBALS gnat_write_global_declarations
108 #undef LANG_HOOKS_GET_ALIAS_SET
109 #define LANG_HOOKS_GET_ALIAS_SET gnat_get_alias_set
110 #undef LANG_HOOKS_PRINT_DECL
111 #define LANG_HOOKS_PRINT_DECL gnat_print_decl
112 #undef LANG_HOOKS_PRINT_TYPE
113 #define LANG_HOOKS_PRINT_TYPE gnat_print_type
114 #undef LANG_HOOKS_TYPE_MAX_SIZE
115 #define LANG_HOOKS_TYPE_MAX_SIZE gnat_type_max_size
116 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
117 #define LANG_HOOKS_DECL_PRINTABLE_NAME gnat_printable_name
118 #undef LANG_HOOKS_DWARF_NAME
119 #define LANG_HOOKS_DWARF_NAME gnat_dwarf_name
120 #undef LANG_HOOKS_GIMPLIFY_EXPR
121 #define LANG_HOOKS_GIMPLIFY_EXPR gnat_gimplify_expr
122 #undef LANG_HOOKS_TYPE_FOR_MODE
123 #define LANG_HOOKS_TYPE_FOR_MODE gnat_type_for_mode
124 #undef LANG_HOOKS_TYPE_FOR_SIZE
125 #define LANG_HOOKS_TYPE_FOR_SIZE gnat_type_for_size
126 #undef LANG_HOOKS_TYPES_COMPATIBLE_P
127 #define LANG_HOOKS_TYPES_COMPATIBLE_P gnat_types_compatible_p
128 #undef LANG_HOOKS_GET_SUBRANGE_BOUNDS
129 #define LANG_HOOKS_GET_SUBRANGE_BOUNDS gnat_get_subrange_bounds
130 #undef LANG_HOOKS_ATTRIBUTE_TABLE
131 #define LANG_HOOKS_ATTRIBUTE_TABLE gnat_internal_attribute_table
132 #undef LANG_HOOKS_BUILTIN_FUNCTION
133 #define LANG_HOOKS_BUILTIN_FUNCTION gnat_builtin_function
134 #undef LANG_HOOKS_EH_PERSONALITY
135 #define LANG_HOOKS_EH_PERSONALITY gnat_eh_personality
137 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
139 /* How much we want of our DWARF extensions. Some of our dwarf+ extensions
140 are incompatible with regular GDB versions, so we must make sure to only
141 produce them on explicit request. This is eventually reflected into the
142 use_gnu_debug_info_extensions common flag for later processing. */
143 static int gnat_dwarf_extensions = 0;
145 /* Command-line argc and argv. These variables are global
146 since they are imported in back_end.adb. */
147 unsigned int save_argc;
148 const char **save_argv;
150 /* GNAT argc and argv. */
151 extern int gnat_argc;
152 extern char **gnat_argv;
154 /* Declare functions we use as part of startup. */
155 extern void __gnat_initialize (void *);
156 extern void __gnat_install_SEH_handler (void *);
157 extern void adainit (void);
158 extern void _ada_gnat1drv (void);
160 /* The parser for the language. For us, we process the GNAT tree. */
163 gnat_parse_file (int set_yydebug ATTRIBUTE_UNUSED)
167 /* Call the target specific initializations. */
168 __gnat_initialize (NULL);
170 /* ??? Call the SEH initialization routine. This is to workaround
171 a bootstrap path problem. The call below should be removed at some
172 point and the SEH pointer passed to __gnat_initialize() above. */
173 __gnat_install_SEH_handler((void *)seh);
175 /* Call the front-end elaboration procedures. */
178 /* Call the front end. */
182 /* Decode all the language specific options that cannot be decoded by GCC.
183 The option decoding phase of GCC calls this routine on the flags that
184 it cannot decode. Return the number of consecutive arguments from ARGV
185 that have been successfully decoded or 0 on failure. */
188 gnat_handle_option (size_t scode, const char *arg, int value)
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 /* Performs whatever initialization steps needed by the language-dependent
394 gnat_init_decl_processing ();
396 /* Add the input filename as the last argument. */
397 if (main_input_filename)
399 gnat_argv[gnat_argc] = xstrdup (main_input_filename);
401 gnat_argv[gnat_argc] = NULL;
404 global_dc->internal_error = &internal_error_function;
406 /* Show that REFERENCE_TYPEs are internal and should be Pmode. */
407 internal_reference_types ();
412 /* If we are using the GCC mechanism to process exception handling, we
413 have to register the personality routine for Ada and to initialize
414 various language dependent hooks. */
417 gnat_init_gcc_eh (void)
419 #ifdef DWARF2_UNWIND_INFO
420 /* lang_dependent_init already called dwarf2out_frame_init if true. */
421 int dwarf2out_frame_initialized = dwarf2out_do_frame ();
424 /* We shouldn't do anything if the No_Exceptions_Handler pragma is set,
425 though. This could for instance lead to the emission of tables with
426 references to symbols (such as the Ada eh personality routine) within
427 libraries we won't link against. */
428 if (No_Exception_Handlers_Set ())
431 /* Tell GCC we are handling cleanup actions through exception propagation.
432 This opens possibilities that we don't take advantage of yet, but is
433 nonetheless necessary to ensure that fixup code gets assigned to the
434 right exception regions. */
435 using_eh_for_cleanups ();
437 lang_eh_type_covers = gnat_eh_type_covers;
439 /* Turn on -fexceptions and -fnon-call-exceptions. The first one triggers
440 the generation of the necessary exception runtime tables. The second one
441 is useful for two reasons: 1/ we map some asynchronous signals like SEGV
442 to exceptions, so we need to ensure that the insns which can lead to such
443 signals are correctly attached to the exception region they pertain to,
444 2/ Some calls to pure subprograms are handled as libcall blocks and then
445 marked as "cannot trap" if the flag is not set (see emit_libcall_block).
446 We should not let this be since it is possible for such calls to actually
449 flag_non_call_exceptions = 1;
452 #ifdef DWARF2_UNWIND_INFO
453 if (!dwarf2out_frame_initialized && dwarf2out_do_frame ())
454 dwarf2out_frame_init ();
458 /* Print language-specific items in declaration NODE. */
461 gnat_print_decl (FILE *file, tree node, int indent)
463 switch (TREE_CODE (node))
466 print_node (file, "corresponding var",
467 DECL_CONST_CORRESPONDING_VAR (node), indent + 4);
471 print_node (file, "original field", DECL_ORIGINAL_FIELD (node),
476 print_node (file, "renamed object", DECL_RENAMED_OBJECT (node),
485 /* Print language-specific items in type NODE. */
488 gnat_print_type (FILE *file, tree node, int indent)
490 switch (TREE_CODE (node))
493 print_node (file, "ci/co list", TYPE_CI_CO_LIST (node), indent + 4);
497 if (TYPE_MODULAR_P (node))
498 print_node_brief (file, "modulus", TYPE_MODULUS (node), indent + 4);
499 else if (TYPE_HAS_ACTUAL_BOUNDS_P (node))
500 print_node (file, "actual bounds", TYPE_ACTUAL_BOUNDS (node),
502 else if (TYPE_VAX_FLOATING_POINT_P (node))
505 print_node (file, "index type", TYPE_INDEX_TYPE (node), indent + 4);
507 /* ... fall through ... */
511 print_node_brief (file, "RM size", TYPE_RM_SIZE (node), indent + 4);
513 /* ... fall through ... */
516 print_node_brief (file, "RM min", TYPE_RM_MIN_VALUE (node), indent + 4);
517 print_node_brief (file, "RM max", TYPE_RM_MAX_VALUE (node), indent + 4);
521 print_node (file,"actual bounds", TYPE_ACTUAL_BOUNDS (node), indent + 4);
525 print_node (file,"representative array",
526 TYPE_REPRESENTATIVE_ARRAY (node), indent + 4);
530 if (TYPE_IS_FAT_POINTER_P (node) || TYPE_CONTAINS_TEMPLATE_P (node))
531 print_node (file, "unconstrained array",
532 TYPE_UNCONSTRAINED_ARRAY (node), indent + 4);
534 print_node (file, "Ada size", TYPE_ADA_SIZE (node), indent + 4);
538 case QUAL_UNION_TYPE:
539 print_node (file, "Ada size", TYPE_ADA_SIZE (node), indent + 4);
547 /* Return the name to be printed for DECL. */
550 gnat_printable_name (tree decl, int verbosity)
552 const char *coded_name = IDENTIFIER_POINTER (DECL_NAME (decl));
553 char *ada_name = (char *) ggc_alloc (strlen (coded_name) * 2 + 60);
555 __gnat_decode (coded_name, ada_name, 0);
557 if (verbosity == 2 && !DECL_IS_BUILTIN (decl))
559 Set_Identifier_Casing (ada_name, DECL_SOURCE_FILE (decl));
560 return ggc_strdup (Name_Buffer);
566 /* Return the name to be used in DWARF debug info for DECL. */
569 gnat_dwarf_name (tree decl, int verbosity ATTRIBUTE_UNUSED)
571 gcc_assert (DECL_P (decl));
572 return (const char *) IDENTIFIER_POINTER (DECL_NAME (decl));
575 /* Do nothing (return the tree node passed). */
578 gnat_return_tree (tree t)
583 /* Return true if type A catches type B. Callback for flow analysis from
584 the exception handling part of the back-end. */
587 gnat_eh_type_covers (tree a, tree b)
589 /* a catches b if they represent the same exception id or if a
592 ??? integer_zero_node for "others" is hardwired in too many places
594 return (a == b || a == integer_zero_node);
597 /* Get the alias set corresponding to a type or expression. */
599 static alias_set_type
600 gnat_get_alias_set (tree type)
602 /* If this is a padding type, use the type of the first field. */
603 if (TREE_CODE (type) == RECORD_TYPE
604 && TYPE_IS_PADDING_P (type))
605 return get_alias_set (TREE_TYPE (TYPE_FIELDS (type)));
607 /* If the type is an unconstrained array, use the type of the
608 self-referential array we make. */
609 else if (TREE_CODE (type) == UNCONSTRAINED_ARRAY_TYPE)
611 get_alias_set (TREE_TYPE (TREE_TYPE (TYPE_FIELDS (TREE_TYPE (type)))));
613 /* If the type can alias any other types, return the alias set 0. */
614 else if (TYPE_P (type)
615 && TYPE_UNIVERSAL_ALIASING_P (TYPE_MAIN_VARIANT (type)))
621 /* GNU_TYPE is a type. Return its maximum size in bytes, if known,
622 as a constant when possible. */
625 gnat_type_max_size (const_tree gnu_type)
627 /* First see what we can get from TYPE_SIZE_UNIT, which might not
628 be constant even for simple expressions if it has already been
629 elaborated and possibly replaced by a VAR_DECL. */
630 tree max_unitsize = max_size (TYPE_SIZE_UNIT (gnu_type), true);
632 /* If we don't have a constant, see what we can get from TYPE_ADA_SIZE,
633 which should stay untouched. */
634 if (!host_integerp (max_unitsize, 1)
635 && (TREE_CODE (gnu_type) == RECORD_TYPE
636 || TREE_CODE (gnu_type) == UNION_TYPE
637 || TREE_CODE (gnu_type) == QUAL_UNION_TYPE)
638 && TYPE_ADA_SIZE (gnu_type))
640 tree max_adasize = max_size (TYPE_ADA_SIZE (gnu_type), true);
642 /* If we have succeeded in finding a constant, round it up to the
643 type's alignment and return the result in units. */
644 if (host_integerp (max_adasize, 1))
646 = size_binop (CEIL_DIV_EXPR,
647 round_up (max_adasize, TYPE_ALIGN (gnu_type)),
654 /* GNU_TYPE is a subtype of an integral type. Set LOWVAL to the low bound
655 and HIGHVAL to the high bound, respectively. */
658 gnat_get_subrange_bounds (const_tree gnu_type, tree *lowval, tree *highval)
660 *lowval = TYPE_MIN_VALUE (gnu_type);
661 *highval = TYPE_MAX_VALUE (gnu_type);
664 /* GNU_TYPE is a type. Determine if it should be passed by reference by
668 default_pass_by_ref (tree gnu_type)
670 /* We pass aggregates by reference if they are sufficiently large. The
671 choice of constant here is somewhat arbitrary. We also pass by
672 reference if the target machine would either pass or return by
673 reference. Strictly speaking, we need only check the return if this
674 is an In Out parameter, but it's probably best to err on the side of
675 passing more things by reference. */
677 if (pass_by_reference (NULL, TYPE_MODE (gnu_type), gnu_type, 1))
680 if (targetm.calls.return_in_memory (gnu_type, NULL_TREE))
683 if (AGGREGATE_TYPE_P (gnu_type)
684 && (!host_integerp (TYPE_SIZE (gnu_type), 1)
685 || 0 < compare_tree_int (TYPE_SIZE (gnu_type),
686 8 * TYPE_ALIGN (gnu_type))))
692 /* GNU_TYPE is the type of a subprogram parameter. Determine from the type if
693 it should be passed by reference. */
696 must_pass_by_ref (tree gnu_type)
698 /* We pass only unconstrained objects, those required by the language
699 to be passed by reference, and objects of variable size. The latter
700 is more efficient, avoids problems with variable size temporaries,
701 and does not produce compatibility problems with C, since C does
702 not have such objects. */
703 return (TREE_CODE (gnu_type) == UNCONSTRAINED_ARRAY_TYPE
704 || (AGGREGATE_TYPE_P (gnu_type) && TYPE_BY_REFERENCE_P (gnu_type))
705 || (TYPE_SIZE (gnu_type)
706 && TREE_CODE (TYPE_SIZE (gnu_type)) != INTEGER_CST));
709 /* This function is called by the front end to enumerate all the supported
710 modes for the machine. We pass a function which is called back with
711 the following integer parameters:
713 FLOAT_P nonzero if this represents a floating-point mode
714 COMPLEX_P nonzero is this represents a complex mode
715 COUNT count of number of items, nonzero for vector mode
716 PRECISION number of bits in data representation
717 MANTISSA number of bits in mantissa, if FP and known, else zero.
718 SIZE number of bits used to store data
719 ALIGN number of bits to which mode is aligned. */
722 enumerate_modes (void (*f) (int, int, int, int, int, int, unsigned int))
726 for (iloop = 0; iloop < NUM_MACHINE_MODES; iloop++)
728 enum machine_mode i = (enum machine_mode) iloop;
735 enum machine_mode inner_mode = i;
737 switch (GET_MODE_CLASS (i))
744 case MODE_COMPLEX_INT:
746 inner_mode = GET_MODE_INNER (i);
748 case MODE_COMPLEX_FLOAT:
751 inner_mode = GET_MODE_INNER (i);
753 case MODE_VECTOR_INT:
755 inner_mode = GET_MODE_INNER (i);
757 case MODE_VECTOR_FLOAT:
760 inner_mode = GET_MODE_INNER (i);
766 /* Skip this mode if it's one the front end doesn't need to know about
767 (e.g., the CC modes) or if there is no add insn for that mode (or
768 any wider mode), meaning it is not supported by the hardware. If
769 this a complex or vector mode, we care about the inner mode. */
770 for (j = inner_mode; j != VOIDmode; j = GET_MODE_WIDER_MODE (j))
771 if (optab_handler (add_optab, j)->insn_code != CODE_FOR_nothing)
776 const struct real_format *fmt = REAL_MODE_FORMAT (inner_mode);
781 if (!skip_p && j != VOIDmode)
782 (*f) (float_p, complex_p, vector_p ? GET_MODE_NUNITS (i) : 0,
783 GET_MODE_BITSIZE (i), mantissa,
784 GET_MODE_SIZE (i) * BITS_PER_UNIT, GET_MODE_ALIGNMENT (i));
788 /* Return the size of the FP mode with precision PREC. */
791 fp_prec_to_size (int prec)
793 enum machine_mode mode;
795 for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT); mode != VOIDmode;
796 mode = GET_MODE_WIDER_MODE (mode))
797 if (GET_MODE_PRECISION (mode) == prec)
798 return GET_MODE_BITSIZE (mode);
803 /* Return the precision of the FP mode with size SIZE. */
806 fp_size_to_prec (int size)
808 enum machine_mode mode;
810 for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT); mode != VOIDmode;
811 mode = GET_MODE_WIDER_MODE (mode))
812 if (GET_MODE_BITSIZE (mode) == size)
813 return GET_MODE_PRECISION (mode);
818 static GTY(()) tree gnat_eh_personality_decl;
821 gnat_eh_personality (void)
823 if (!gnat_eh_personality_decl)
824 gnat_eh_personality_decl
825 = build_personality_function (USING_SJLJ_EXCEPTIONS
826 ? "__gnat_eh_personality_sj"
827 : "__gnat_eh_personality");
829 return gnat_eh_personality_decl;
832 #include "gt-ada-misc.h"