* *
* 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- *
#include "opts.h"
#include "options.h"
#include "plugin.h"
+#include "real.h"
#include "function.h" /* For pass_by_reference. */
#include "ada.h"
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);
+#ifdef __cplusplus
+}
+#endif
+
/* The parser for the language. For us, we process the GNAT tree. */
static void
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;
+ warn_maybe_uninitialized = value;
break;
case OPT_gant:
|| num_elements == 0)
continue;
- if (decoded_options[i].opt_index == OPT_I)
- {
- gcc_assert (num_elements == 2);
- save_argv[save_argc++]
- = concat (decoded_options[i].canonical_option[0],
- decoded_options[i].canonical_option[1], NULL);
- }
+ /* 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);
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. */
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;
-
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. */
/* 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);
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
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_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_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;
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