/* Subroutines shared by all languages that are variants of C.
Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002 Free Software Foundation, Inc.
+ 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GCC.
#include "config.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "intl.h"
#include "tree.h"
-#include "real.h"
#include "flags.h"
#include "toplev.h"
#include "output.h"
#include "c-pragma.h"
#include "rtl.h"
#include "ggc.h"
+#include "varray.h"
#include "expr.h"
#include "c-common.h"
#include "diagnostic.h"
#include "cpplib.h"
#include "target.h"
#include "langhooks.h"
-#include "except.h" /* For USING_SJLJ_EXCEPTIONS. */
#include "tree-inline.h"
+#include "c-tree.h"
cpp_reader *parse_in; /* Declared in c-pragma.h. */
: "long long unsigned int"))
#endif
-#ifndef REGISTER_PREFIX
-#define REGISTER_PREFIX ""
-#endif
-
/* The variant of the C language being processed. */
enum c_language_kind c_language;
tree c_global_trees[CTI_MAX];
+/* TRUE if a code represents a statement. The front end init
+ langhook should take care of initialization of this array. */
+
+bool statement_code_p[MAX_TREE_CODES];
+
+/* Nonzero if we can read a PCH file now. */
+
+int allow_pch = 1;
+\f
/* Switches common to the C front ends. */
/* Nonzero if prepreprocessing only. */
+
int flag_preprocess_only;
+/* Nonzero means don't output line number information. */
+
+char flag_no_line_commands;
+
+/* Nonzero causes -E output not to be done, but directives such as
+ #define that have side effects are still obeyed. */
+
+char flag_no_output;
+
+/* Nonzero means dump macros in some fashion. */
+
+char flag_dump_macros;
+
+/* Nonzero means pass #include lines through to the output. */
+
+char flag_dump_includes;
+
+/* The file name to which we should write a precompiled header, or
+ NULL if no header will be written in this compile. */
+
+const char *pch_file;
+
/* Nonzero if an ISO standard was selected. It rejects macros in the
user's namespace. */
int flag_iso;
int flag_const_strings;
-/* Nonzero means `$' can be in an identifier. */
-
-#ifndef DOLLARS_IN_IDENTIFIERS
-#define DOLLARS_IN_IDENTIFIERS 1
-#endif
-int dollars_in_ident = DOLLARS_IN_IDENTIFIERS;
-
/* Nonzero means to treat bitfields as signed unless they say `unsigned'. */
int flag_signed_bitfields = 1;
int warn_missing_braces;
/* Warn about comparison of signed and unsigned values.
- If -1, neither -Wsign-compare nor -Wno-sign-compare has been specified. */
+ If -1, neither -Wsign-compare nor -Wno-sign-compare has been specified
+ (in which case -Wextra gets to decide). */
-int warn_sign_compare;
+int warn_sign_compare = -1;
/* Nonzero means warn about usage of long long when `-pedantic'. */
int warn_abi = 0;
+/* Nonzero means warn about invalid uses of offsetof. */
+
+int warn_invalid_offsetof = 1;
+
/* Nonzero means warn about implicit declarations. */
int warn_implicit = 1;
/* Nonzero means warn when all ctors or dtors are private, and the class
has no friends. */
-int warn_ctor_dtor_privacy = 1;
+int warn_ctor_dtor_privacy = 0;
/* Nonzero means warn in function declared in derived class has the
same name as a virtual in the base class, but fails to match the
tree (*make_fname_decl) PARAMS ((tree, int));
-/* If non-NULL, the address of a language-specific function that
- returns 1 for language-specific statement codes. */
-int (*lang_statement_code_p) PARAMS ((enum tree_code));
-
/* If non-NULL, the address of a language-specific function that takes
any action required right before expand_function_end is called. */
void (*lang_expand_function_end) PARAMS ((void));
typedef struct
{
int compstmt_count;
- int line;
- const char *file;
+ location_t locus;
int needs_warning;
tree if_stmt;
} if_elt;
bool *));
static tree handle_visibility_attribute PARAMS ((tree *, tree, tree, int,
bool *));
+static tree handle_tls_model_attribute PARAMS ((tree *, tree, tree, int,
+ bool *));
static tree handle_no_instrument_function_attribute PARAMS ((tree *, tree,
tree, int,
bool *));
bool *));
static tree handle_nothrow_attribute PARAMS ((tree *, tree, tree, int,
bool *));
+static tree handle_cleanup_attribute PARAMS ((tree *, tree, tree, int,
+ bool *));
static tree vector_size_helper PARAMS ((tree, tree));
static void check_function_nonnull PARAMS ((tree, tree));
static bool nonnull_check_p PARAMS ((tree, unsigned HOST_WIDE_INT));
static bool get_nonnull_operand PARAMS ((tree,
unsigned HOST_WIDE_INT *));
-void builtin_define_std PARAMS ((const char *));
-static void builtin_define_with_value PARAMS ((const char *, const char *,
- int));
-static void builtin_define_with_int_value PARAMS ((const char *,
- HOST_WIDE_INT));
-static void builtin_define_with_hex_fp_value PARAMS ((const char *, tree,
- int, const char *,
- const char *));
-static void builtin_define_type_max PARAMS ((const char *, tree, int));
-static void cpp_define_data_format PARAMS ((cpp_reader *));
-static void builtin_define_type_precision PARAMS ((const char *, tree));
-static void builtin_define_float_constants PARAMS ((const char *,
- const char *, tree));
/* Table of machine-independent attributes common to all C-like languages. */
const struct attribute_spec c_common_attribute_table[] =
handle_vector_size_attribute },
{ "visibility", 1, 1, true, false, false,
handle_visibility_attribute },
+ { "tls_model", 1, 1, true, false, false,
+ handle_tls_model_attribute },
{ "nonnull", 0, -1, false, true, true,
handle_nonnull_attribute },
{ "nothrow", 0, 0, true, false, false,
handle_nothrow_attribute },
{ "may_alias", 0, 0, false, true, false, NULL },
+ { "cleanup", 1, 1, true, false, false,
+ handle_cleanup_attribute },
{ NULL, 0, 0, false, false, false, NULL }
};
/* Give the specifications for the format attributes, used by C and all
- descendents. */
+ descendants. */
const struct attribute_spec c_common_format_attribute_table[] =
{
/* Record this if statement. */
if_stack[if_stack_pointer].compstmt_count = compstmt_count;
- if_stack[if_stack_pointer].file = input_filename;
- if_stack[if_stack_pointer].line = lineno;
+ if_stack[if_stack_pointer].locus = input_location;
if_stack[if_stack_pointer].needs_warning = 0;
if_stack[if_stack_pointer].if_stmt = if_stmt;
if_stack_pointer++;
{
if_stack_pointer--;
if (if_stack[if_stack_pointer].needs_warning)
- warning_with_file_and_line (if_stack[if_stack_pointer].file,
- if_stack[if_stack_pointer].line,
- "suggest explicit braces to avoid ambiguous `else'");
+ warning ("%Hsuggest explicit braces to avoid ambiguous `else'",
+ &if_stack[if_stack_pointer].locus);
last_expr_type = NULL_TREE;
}
if (body)
{
- /* They were called into existence, so add to statement tree. */
- body = chainon (body,
- TREE_CHAIN (DECL_SAVED_TREE (current_function_decl)));
- body = build_stmt (COMPOUND_STMT, body);
-
- COMPOUND_STMT_NO_SCOPE (body) = 1;
- TREE_CHAIN (DECL_SAVED_TREE (current_function_decl)) = body;
+ /* They were called into existence, so add to statement tree. Add
+ the DECL_STMTs inside the outermost scope. */
+ tree *p = &DECL_SAVED_TREE (current_function_decl);
+ /* Skip the dummy EXPR_STMT and any EH_SPEC_BLOCK. */
+ while (TREE_CODE (*p) != COMPOUND_STMT)
+ p = &TREE_CHAIN (*p);
+ p = &COMPOUND_BODY (*p);
+ if (TREE_CODE (*p) == SCOPE_STMT)
+ p = &TREE_CHAIN (*p);
+
+ body = chainon (body, *p);
+ *p = body;
}
for (ix = 0; fname_vars[ix].decl; ix++)
saved_function_name_decls = stack;
}
-/* Return the text name of the current function, suitable prettified
+/* Return the text name of the current function, suitably prettified
by PRETTY_P. */
const char *
beginning of the function and this line number will be wrong.
To avoid this problem set the lineno to 0 here; that prevents
it from appearing in the RTL. */
- int saved_lineno = lineno;
- lineno = 0;
+ int saved_lineno = input_line;
+ input_line = 0;
decl = (*make_fname_decl) (id, fname_vars[ix].pretty);
if (last_tree != saved_last_tree)
saved_function_name_decls);
}
*fname_vars[ix].decl = decl;
- lineno = saved_lineno;
+ input_line = saved_lineno;
}
if (!ix && !current_function_decl)
pedwarn_with_decl (decl, "`%s' is not defined outside of function scope");
-
+
return decl;
}
return unsignedp ? unsigned_V2DI_type_node : V2DI_type_node;
case V2SImode:
return unsignedp ? unsigned_V2SI_type_node : V2SI_type_node;
+ case V2HImode:
+ return unsignedp ? unsigned_V2HI_type_node : V2HI_type_node;
case V4HImode:
return unsignedp ? unsigned_V4HI_type_node : V4HI_type_node;
case V8QImode:
case ABS_EXPR:
case FLOAT_EXPR:
case FFS_EXPR:
+ case POPCOUNT_EXPR:
/* These don't change whether an object is nonzero or zero. */
return c_common_truthvalue_conversion (TREE_OPERAND (expr, 0));
if (! TYPE_P (t))
return -1;
- /* The C standard guarantess that any object may be accessed via an
+ /* The C standard guarantees that any object may be accessed via an
lvalue that has character type. */
if (t == char_type_node
|| t == signed_char_type_node
TYPE_IS_SIZETYPE means that certain things (like overflow) will
never happen. However, this node should really have type
`size_t', which is just a typedef for an ordinary integer type. */
- value = fold (build1 (NOP_EXPR, c_size_type_node, value));
+ value = fold (build1 (NOP_EXPR, size_type_node, value));
my_friendly_assert (!TYPE_IS_SIZETYPE (TREE_TYPE (value)), 20001021);
return value;
else
return c_alignof (TREE_TYPE (expr));
- return fold (build1 (NOP_EXPR, c_size_type_node, t));
+ return fold (build1 (NOP_EXPR, size_type_node, t));
}
\f
/* Handle C and C++ default attributes. */
#define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME,
#define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME,
#define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME,
+#define DEF_FUNCTION_TYPE_VAR_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
#define DEF_POINTER_TYPE(NAME, TYPE) NAME,
#include "builtin-types.def"
#undef DEF_PRIMITIVE_TYPE
#undef DEF_FUNCTION_TYPE_VAR_0
#undef DEF_FUNCTION_TYPE_VAR_1
#undef DEF_FUNCTION_TYPE_VAR_2
+#undef DEF_FUNCTION_TYPE_VAR_3
#undef DEF_POINTER_TYPE
BT_LAST
};
/* `unsigned long' is the standard type for sizeof.
Note that stddef.h uses `unsigned long',
and this must agree, even if long and int are the same size. */
- c_size_type_node =
+ size_type_node =
TREE_TYPE (identifier_global_value (get_identifier (SIZE_TYPE)));
- signed_size_type_node = c_common_signed_type (c_size_type_node);
- set_sizetype (c_size_type_node);
+ signed_size_type_node = c_common_signed_type (size_type_node);
+ set_sizetype (size_type_node);
build_common_tree_nodes_2 (flag_short_double);
= build_pointer_type (build_qualified_type
(char_type_node, TYPE_QUAL_CONST));
- (*targetm.init_builtins) ();
-
/* This is special for C++ so functions can be overloaded. */
wchar_type_node = get_identifier (MODIFIED_WCHAR_TYPE);
wchar_type_node = TREE_TYPE (identifier_global_value (wchar_type_node));
tree_cons (NULL_TREE, \
builtin_types[(int) ARG2], \
NULL_TREE)));
+
+#define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
+ builtin_types[(int) ENUM] \
+ = build_function_type \
+ (builtin_types[(int) RETURN], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG1], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG2], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG3], \
+ NULL_TREE))));
+
#define DEF_POINTER_TYPE(ENUM, TYPE) \
builtin_types[(int) ENUM] \
= build_pointer_type (builtin_types[(int) TYPE]);
#undef DEF_FUNCTION_TYPE_4
#undef DEF_FUNCTION_TYPE_VAR_0
#undef DEF_FUNCTION_TYPE_VAR_1
+#undef DEF_FUNCTION_TYPE_VAR_2
+#undef DEF_FUNCTION_TYPE_VAR_3
#undef DEF_POINTER_TYPE
if (!c_attrs_initialized)
c_init_attributes ();
#define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, \
- BOTH_P, FALLBACK_P, NONANSI_P, ATTRS) \
+ BOTH_P, FALLBACK_P, NONANSI_P, ATTRS, IMPLICIT) \
if (NAME) \
{ \
tree decl; \
built_in_attributes[(int) ATTRS]); \
\
built_in_decls[(int) ENUM] = decl; \
+ if (IMPLICIT) \
+ implicit_built_in_decls[(int) ENUM] = decl; \
}
#include "builtins.def"
#undef DEF_BUILTIN
+ (*targetm.init_builtins) ();
+
main_identifier_node = get_identifier ("main");
}
{
tree bdecl = NULL_TREE;
tree decl = NULL_TREE;
+
if (builtin_name != 0)
- {
- bdecl = builtin_function (builtin_name, builtin_type, function_code,
- class, library_name_p ? name : NULL,
- attrs);
- }
+ bdecl = builtin_function (builtin_name, builtin_type, function_code,
+ class, library_name_p ? name : NULL, attrs);
+
if (name != 0 && !flag_no_builtin && !builtin_function_disabled_p (name)
&& !(nonansi_p && flag_no_nonansi_builtin))
- {
- decl = builtin_function (name, type, function_code, class, NULL,
- attrs);
- if (nonansi_p)
- DECL_BUILT_IN_NONANSI (decl) = 1;
- }
+ decl = builtin_function (name, type, function_code, class, NULL, attrs);
+
return (bdecl != 0 ? bdecl : decl);
}
\f
return NULL_TREE;
}
-/* Returns nonzero if CODE is the code for a statement. */
-
-int
-statement_code_p (code)
- enum tree_code code;
-{
- switch (code)
- {
- case CLEANUP_STMT:
- case EXPR_STMT:
- case COMPOUND_STMT:
- case DECL_STMT:
- case IF_STMT:
- case FOR_STMT:
- case WHILE_STMT:
- case DO_STMT:
- case RETURN_STMT:
- case BREAK_STMT:
- case CONTINUE_STMT:
- case SCOPE_STMT:
- case SWITCH_STMT:
- case GOTO_STMT:
- case LABEL_STMT:
- case ASM_STMT:
- case FILE_STMT:
- case CASE_LABEL:
- return 1;
-
- default:
- if (lang_statement_code_p)
- return (*lang_statement_code_p) (code);
- return 0;
- }
-}
-
/* Walk the statement tree, rooted at *tp. Apply FUNC to all the
sub-trees of *TP in a pre-order traversal. FUNC is called with the
DATA and the address of each sub-tree. If FUNC returns a non-NULL
return NULL_TREE;
/* Skip subtrees below non-statement nodes. */
- if (!statement_code_p (TREE_CODE (*tp)))
+ if (!STATEMENT_CODE_P (TREE_CODE (*tp)))
return NULL_TREE;
/* Call the function. */
/* FUNC may have modified the tree, recheck that we're looking at a
statement node. */
code = TREE_CODE (*tp);
- if (!statement_code_p (code))
+ if (!STATEMENT_CODE_P (code))
return NULL_TREE;
/* Visit the subtrees unless FUNC decided that there was nothing
return case_label;
}
-/* Finish an expression taking the address of LABEL. Returns an
- expression for the address. */
+/* Finish an expression taking the address of LABEL (an
+ IDENTIFIER_NODE). Returns an expression for the address. */
tree
finish_label_address_expr (label)
pedwarn ("ISO C forbids taking the address of a label");
}
+ if (label == error_mark_node)
+ return error_mark_node;
+
label = lookup_label (label);
if (label == NULL_TREE)
result = null_pointer_node;
}
/* For any statement, we must follow the statement-chain. */
- if (statement_code_p (TREE_CODE (exp)) && TREE_CHAIN (exp))
+ if (STATEMENT_CODE_P (TREE_CODE (exp)) && TREE_CHAIN (exp))
return safe_from_p (target, TREE_CHAIN (exp), /*top_p=*/0);
/* Assume everything else is safe. */
int unlocked;
{
tree fn_putchar = unlocked ?
- built_in_decls[BUILT_IN_PUTCHAR_UNLOCKED] : built_in_decls[BUILT_IN_PUTCHAR];
+ implicit_built_in_decls[BUILT_IN_PUTCHAR_UNLOCKED] : implicit_built_in_decls[BUILT_IN_PUTCHAR];
tree fn_puts = unlocked ?
- built_in_decls[BUILT_IN_PUTS_UNLOCKED] : built_in_decls[BUILT_IN_PUTS];
+ implicit_built_in_decls[BUILT_IN_PUTS_UNLOCKED] : implicit_built_in_decls[BUILT_IN_PUTS];
tree fn, format_arg, stripped_string;
/* If the return value is used, or the replacement _DECL isn't
int unlocked;
{
tree fn_fputc = unlocked ?
- built_in_decls[BUILT_IN_FPUTC_UNLOCKED] : built_in_decls[BUILT_IN_FPUTC];
+ implicit_built_in_decls[BUILT_IN_FPUTC_UNLOCKED] : implicit_built_in_decls[BUILT_IN_FPUTC];
tree fn_fputs = unlocked ?
- built_in_decls[BUILT_IN_FPUTS_UNLOCKED] : built_in_decls[BUILT_IN_FPUTS];
+ implicit_built_in_decls[BUILT_IN_FPUTS_UNLOCKED] : implicit_built_in_decls[BUILT_IN_FPUTS];
tree fn, format_arg, stripped_string;
/* If the return value is used, or the replacement _DECL isn't
return val;
}
\f
-/* Define macros necessary to describe fundamental data type formats. */
-static void
-cpp_define_data_format (pfile)
- cpp_reader *pfile;
-{
- const char *format;
-
- /* Define supported floating-point format enumeration values. */
- cpp_define (pfile, "__UNKNOWN_FORMAT__=0");
- cpp_define (pfile, "__IEEE_FORMAT__=1");
- cpp_define (pfile, "__IBM_FORMAT__=2");
- cpp_define (pfile, "__C4X_FORMAT__=3");
- cpp_define (pfile, "__VAX_FORMAT__=4");
-
- switch (TARGET_FLOAT_FORMAT)
- {
- case UNKNOWN_FLOAT_FORMAT:
- format = "__UNKNOWN_FORMAT__";
- break;
- case IEEE_FLOAT_FORMAT:
- format = "__IEEE_FORMAT__";
- break;
- case VAX_FLOAT_FORMAT:
- format = "__VAX_FORMAT__";
- break;
- case IBM_FLOAT_FORMAT:
- format = "__IBM_FORMAT__";
- break;
- case C4X_FLOAT_FORMAT:
- format = "__C4X_FORMAT__";
- break;
- default:
- abort();
- }
-
- builtin_define_with_value ("__GCC_FLOAT_FORMAT__", format, 0);
-}
-
-/* Define NAME with value TYPE precision. */
-static void
-builtin_define_type_precision (name, type)
- const char *name;
- tree type;
-{
- builtin_define_with_int_value (name, TYPE_PRECISION (type));
-}
-
-/* Define the float.h constants for TYPE using NAME_PREFIX and FP_SUFFIX. */
-static void
-builtin_define_float_constants (name_prefix, fp_suffix, type)
- const char *name_prefix;
- const char *fp_suffix;
- tree type;
-{
- /* Used to convert radix-based values to base 10 values in several cases.
-
- In the max_exp -> max_10_exp conversion for 128-bit IEEE, we need at
- least 6 significant digits for correct results. Using the fraction
- formed by (log(2)*1e6)/(log(10)*1e6) overflows a 32-bit integer as an
- intermediate; perhaps someone can find a better approximation, in the
- mean time, I suspect using doubles won't harm the bootstrap here. */
-
- const double log10_2 = .30102999566398119521;
- double log10_b;
- const struct real_format *fmt;
-
- char name[64], buf[128];
- int dig, min_10_exp, max_10_exp;
- int decimal_dig;
-
- fmt = real_format_for_mode[TYPE_MODE (type) - QFmode];
-
- /* The radix of the exponent representation. */
- if (type == float_type_node)
- builtin_define_with_int_value ("__FLT_RADIX__", fmt->b);
- log10_b = log10_2 * fmt->log2_b;
-
- /* The number of radix digits, p, in the floating-point significand. */
- sprintf (name, "__%s_MANT_DIG__", name_prefix);
- builtin_define_with_int_value (name, fmt->p);
-
- /* The number of decimal digits, q, such that any floating-point number
- with q decimal digits can be rounded into a floating-point number with
- p radix b digits and back again without change to the q decimal digits,
-
- p log10 b if b is a power of 10
- floor((p - 1) log10 b) otherwise
- */
- dig = (fmt->p - 1) * log10_b;
- sprintf (name, "__%s_DIG__", name_prefix);
- builtin_define_with_int_value (name, dig);
-
- /* The minimum negative int x such that b**(x-1) is a normalized float. */
- sprintf (name, "__%s_MIN_EXP__", name_prefix);
- sprintf (buf, "(%d)", fmt->emin);
- builtin_define_with_value (name, buf, 0);
-
- /* The minimum negative int x such that 10**x is a normalized float,
-
- ceil (log10 (b ** (emin - 1)))
- = ceil (log10 (b) * (emin - 1))
-
- Recall that emin is negative, so the integer truncation calculates
- the ceiling, not the floor, in this case. */
- min_10_exp = (fmt->emin - 1) * log10_b;
- sprintf (name, "__%s_MIN_10_EXP__", name_prefix);
- sprintf (buf, "(%d)", min_10_exp);
- builtin_define_with_value (name, buf, 0);
-
- /* The maximum int x such that b**(x-1) is a representable float. */
- sprintf (name, "__%s_MAX_EXP__", name_prefix);
- builtin_define_with_int_value (name, fmt->emax);
-
- /* The maximum int x such that 10**x is in the range of representable
- finite floating-point numbers,
-
- floor (log10((1 - b**-p) * b**emax))
- = floor (log10(1 - b**-p) + log10(b**emax))
- = floor (log10(1 - b**-p) + log10(b)*emax)
-
- The safest thing to do here is to just compute this number. But since
- we don't link cc1 with libm, we cannot. We could implement log10 here
- a series expansion, but that seems too much effort because:
-
- Note that the first term, for all extant p, is a number exceedingly close
- to zero, but slightly negative. Note that the second term is an integer
- scaling an irrational number, and that because of the floor we are only
- interested in its integral portion.
-
- In order for the first term to have any effect on the integral portion
- of the second term, the second term has to be exceedingly close to an
- integer itself (e.g. 123.000000000001 or something). Getting a result
- that close to an integer requires that the irrational multiplicand have
- a long series of zeros in its expansion, which doesn't occur in the
- first 20 digits or so of log10(b).
-
- Hand-waving aside, crunching all of the sets of constants above by hand
- does not yield a case for which the first term is significant, which
- in the end is all that matters. */
- max_10_exp = fmt->emax * log10_b;
- sprintf (name, "__%s_MAX_10_EXP__", name_prefix);
- builtin_define_with_int_value (name, max_10_exp);
-
- /* The number of decimal digits, n, such that any floating-point number
- can be rounded to n decimal digits and back again without change to
- the value.
-
- p * log10(b) if b is a power of 10
- ceil(1 + p * log10(b)) otherwise
-
- The only macro we care about is this number for the widest supported
- floating type, but we want this value for rendering constants below. */
- {
- double d_decimal_dig = 1 + fmt->p * log10_b;
- decimal_dig = d_decimal_dig;
- if (decimal_dig < d_decimal_dig)
- decimal_dig++;
- }
- if (type == long_double_type_node)
- builtin_define_with_int_value ("__DECIMAL_DIG__", decimal_dig);
-
- /* Since, for the supported formats, B is always a power of 2, we
- construct the following numbers directly as a hexadecimal
- constants. */
-
- /* The maximum representable finite floating-point number,
- (1 - b**-p) * b**emax */
- {
- int i, n;
- char *p;
-
- strcpy (buf, "0x0.");
- n = fmt->p * fmt->log2_b;
- for (i = 0, p = buf + 4; i + 3 < n; i += 4)
- *p++ = 'f';
- if (i < n)
- *p++ = "08ce"[n - i];
- sprintf (p, "p%d", fmt->emax * fmt->log2_b);
- }
- sprintf (name, "__%s_MAX__", name_prefix);
- builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix);
-
- /* The minimum normalized positive floating-point number,
- b**(emin-1). */
- sprintf (name, "__%s_MIN__", name_prefix);
- sprintf (buf, "0x1p%d", (fmt->emin - 1) * fmt->log2_b);
- builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix);
-
- /* The difference between 1 and the least value greater than 1 that is
- representable in the given floating point type, b**(1-p). */
- sprintf (name, "__%s_EPSILON__", name_prefix);
- sprintf (buf, "0x1p%d", (1 - fmt->p) * fmt->log2_b);
- builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix);
-
- /* For C++ std::numeric_limits<T>::denorm_min. The minimum denormalized
- positive floating-point number, b**(emin-p). Zero for formats that
- don't support denormals. */
- sprintf (name, "__%s_DENORM_MIN__", name_prefix);
- if (fmt->has_denorm)
- {
- sprintf (buf, "0x1p%d", (fmt->emin - fmt->p) * fmt->log2_b);
- builtin_define_with_hex_fp_value (name, type, decimal_dig,
- buf, fp_suffix);
- }
- else
- {
- sprintf (buf, "0.0%s", fp_suffix);
- builtin_define_with_value (name, buf, 0);
- }
-}
-
-/* Hook that registers front end and target-specific built-ins. */
+/* Built-in macros for stddef.h, that require macros defined in this
+ file. */
void
-cb_register_builtins (pfile)
- cpp_reader *pfile;
+c_stddef_cpp_builtins()
{
- /* -undef turns off target-specific built-ins. */
- if (flag_undef)
- return;
-
- if (c_language == clk_cplusplus)
- {
- if (SUPPORTS_ONE_ONLY)
- cpp_define (pfile, "__GXX_WEAK__=1");
- else
- cpp_define (pfile, "__GXX_WEAK__=0");
- if (flag_exceptions)
- cpp_define (pfile, "__EXCEPTIONS");
- if (warn_deprecated)
- cpp_define (pfile, "__DEPRECATED");
- }
-
- /* represents the C++ ABI version, always defined so it can be used while
- preprocessing C and assembler. */
- cpp_define (pfile, "__GXX_ABI_VERSION=102");
-
- /* libgcc needs to know this. */
- if (USING_SJLJ_EXCEPTIONS)
- cpp_define (pfile, "__USING_SJLJ_EXCEPTIONS__");
-
- /* stddef.h needs to know these. */
builtin_define_with_value ("__SIZE_TYPE__", SIZE_TYPE, 0);
builtin_define_with_value ("__PTRDIFF_TYPE__", PTRDIFF_TYPE, 0);
builtin_define_with_value ("__WCHAR_TYPE__", MODIFIED_WCHAR_TYPE, 0);
builtin_define_with_value ("__WINT_TYPE__", WINT_TYPE, 0);
-
- /* limits.h needs to know these. */
- builtin_define_type_max ("__SCHAR_MAX__", signed_char_type_node, 0);
- builtin_define_type_max ("__SHRT_MAX__", short_integer_type_node, 0);
- builtin_define_type_max ("__INT_MAX__", integer_type_node, 0);
- builtin_define_type_max ("__LONG_MAX__", long_integer_type_node, 1);
- builtin_define_type_max ("__LONG_LONG_MAX__", long_long_integer_type_node, 2);
-
- builtin_define_type_precision ("__CHAR_BIT__", char_type_node);
- builtin_define_type_precision ("__WCHAR_BIT__", wchar_type_node);
- builtin_define_type_precision ("__SHRT_BIT__", short_integer_type_node);
- builtin_define_type_precision ("__INT_BIT__", integer_type_node);
- builtin_define_type_precision ("__LONG_BIT__", long_integer_type_node);
- builtin_define_type_precision ("__LONG_LONG_BIT__",
- long_long_integer_type_node);
- builtin_define_type_precision ("__FLOAT_BIT__", float_type_node);
- builtin_define_type_precision ("__DOUBLE_BIT__", double_type_node);
- builtin_define_type_precision ("__LONG_DOUBLE_BIT__", long_double_type_node);
-
- /* float.h needs to know these. */
-
- builtin_define_with_int_value ("__FLT_EVAL_METHOD__",
- TARGET_FLT_EVAL_METHOD);
-
- builtin_define_float_constants ("FLT", "F", float_type_node);
- builtin_define_float_constants ("DBL", "", double_type_node);
- builtin_define_float_constants ("LDBL", "L", long_double_type_node);
-
- /* For use in assembly language. */
- builtin_define_with_value ("__REGISTER_PREFIX__", REGISTER_PREFIX, 0);
- builtin_define_with_value ("__USER_LABEL_PREFIX__", user_label_prefix, 0);
-
- /* Misc. */
- builtin_define_with_value ("__VERSION__", version_string, 1);
-
- /* Other target-independent built-ins determined by command-line
- options. */
- if (optimize_size)
- cpp_define (pfile, "__OPTIMIZE_SIZE__");
- if (optimize)
- cpp_define (pfile, "__OPTIMIZE__");
-
- if (flag_hosted)
- cpp_define (pfile, "__STDC_HOSTED__=1");
- else
- cpp_define (pfile, "__STDC_HOSTED__=0");
-
- if (fast_math_flags_set_p ())
- cpp_define (pfile, "__FAST_MATH__");
- if (flag_no_inline)
- cpp_define (pfile, "__NO_INLINE__");
- if (flag_signaling_nans)
- cpp_define (pfile, "__SUPPORT_SNAN__");
- if (flag_finite_math_only)
- cpp_define (pfile, "__FINITE_MATH_ONLY__=1");
- else
- cpp_define (pfile, "__FINITE_MATH_ONLY__=0");
-
- if (flag_iso)
- cpp_define (pfile, "__STRICT_ANSI__");
-
- if (!flag_signed_char)
- cpp_define (pfile, "__CHAR_UNSIGNED__");
-
- if (c_language == clk_cplusplus && TREE_UNSIGNED (wchar_type_node))
- cpp_define (pfile, "__WCHAR_UNSIGNED__");
-
- cpp_define_data_format (pfile);
-
- /* Make the choice of ObjC runtime visible to source code. */
- if (flag_objc && flag_next_runtime)
- cpp_define (pfile, "__NEXT_RUNTIME__");
-
- /* A straightforward target hook doesn't work, because of problems
- linking that hook's body when part of non-C front ends. */
-# define preprocessing_asm_p() (cpp_get_options (pfile)->lang == CLK_ASM)
-# define preprocessing_trad_p() (cpp_get_options (pfile)->traditional)
-# define builtin_define(TXT) cpp_define (pfile, TXT)
-# define builtin_assert(TXT) cpp_assert (pfile, TXT)
- TARGET_CPU_CPP_BUILTINS ();
- TARGET_OS_CPP_BUILTINS ();
-}
-
-/* Pass an object-like macro. If it doesn't lie in the user's
- namespace, defines it unconditionally. Otherwise define a version
- with two leading underscores, and another version with two leading
- and trailing underscores, and define the original only if an ISO
- standard was not nominated.
-
- e.g. passing "unix" defines "__unix", "__unix__" and possibly
- "unix". Passing "_mips" defines "__mips", "__mips__" and possibly
- "_mips". */
-void
-builtin_define_std (macro)
- const char *macro;
-{
- size_t len = strlen (macro);
- char *buff = alloca (len + 5);
- char *p = buff + 2;
- char *q = p + len;
-
- /* prepend __ (or maybe just _) if in user's namespace. */
- memcpy (p, macro, len + 1);
- if (!( *p == '_' && (p[1] == '_' || ISUPPER (p[1]))))
- {
- if (*p != '_')
- *--p = '_';
- if (p[1] != '_')
- *--p = '_';
- }
- cpp_define (parse_in, p);
-
- /* If it was in user's namespace... */
- if (p != buff + 2)
- {
- /* Define the macro with leading and following __. */
- if (q[-1] != '_')
- *q++ = '_';
- if (q[-2] != '_')
- *q++ = '_';
- *q = '\0';
- cpp_define (parse_in, p);
-
- /* Finally, define the original macro if permitted. */
- if (!flag_iso)
- cpp_define (parse_in, macro);
- }
-}
-
-/* Pass an object-like macro and a value to define it to. The third
- parameter says whether or not to turn the value into a string
- constant. */
-static void
-builtin_define_with_value (macro, expansion, is_str)
- const char *macro;
- const char *expansion;
- int is_str;
-{
- char *buf;
- size_t mlen = strlen (macro);
- size_t elen = strlen (expansion);
- size_t extra = 2; /* space for an = and a NUL */
-
- if (is_str)
- extra += 2; /* space for two quote marks */
-
- buf = alloca (mlen + elen + extra);
- if (is_str)
- sprintf (buf, "%s=\"%s\"", macro, expansion);
- else
- sprintf (buf, "%s=%s", macro, expansion);
-
- cpp_define (parse_in, buf);
-}
-
-/* Pass an object-like macro and an integer value to define it to. */
-static void
-builtin_define_with_int_value (macro, value)
- const char *macro;
- HOST_WIDE_INT value;
-{
- char *buf;
- size_t mlen = strlen (macro);
- size_t vlen = 18;
- size_t extra = 2; /* space for = and NUL. */
-
- buf = alloca (mlen + vlen + extra);
- memcpy (buf, macro, mlen);
- buf[mlen] = '=';
- sprintf (buf + mlen + 1, HOST_WIDE_INT_PRINT_DEC, value);
-
- cpp_define (parse_in, buf);
-}
-
-/* Pass an object-like macro a hexadecimal floating-point value. */
-static void
-builtin_define_with_hex_fp_value (macro, type, digits, hex_str, fp_suffix)
- const char *macro;
- tree type ATTRIBUTE_UNUSED;
- int digits;
- const char *hex_str;
- const char *fp_suffix;
-{
- REAL_VALUE_TYPE real;
- char dec_str[64], buf[256];
-
- /* Hex values are really cool and convenient, except that they're
- not supported in strict ISO C90 mode. First, the "p-" sequence
- is not valid as part of a preprocessor number. Second, we get a
- pedwarn from the preprocessor, which has no context, so we can't
- suppress the warning with __extension__.
-
- So instead what we do is construct the number in hex (because
- it's easy to get the exact correct value), parse it as a real,
- then print it back out as decimal. */
-
- real_from_string (&real, hex_str);
- real_to_decimal (dec_str, &real, digits);
-
- sprintf (buf, "%s=%s%s", macro, dec_str, fp_suffix);
- cpp_define (parse_in, buf);
-}
-
-/* Define MAX for TYPE based on the precision of the type, which is assumed
- to be signed. IS_LONG is 1 for type "long" and 2 for "long long". */
-
-static void
-builtin_define_type_max (macro, type, is_long)
- const char *macro;
- tree type;
- int is_long;
-{
- const char *value;
- char *buf;
- size_t mlen, vlen, extra;
-
- /* Pre-rendering the values mean we don't have to futz with printing a
- multi-word decimal value. There are also a very limited number of
- precisions that we support, so it's really a waste of time. */
- switch (TYPE_PRECISION (type))
- {
- case 8:
- value = "127";
- break;
- case 16:
- value = "32767";
- break;
- case 32:
- value = "2147483647";
- break;
- case 64:
- value = "9223372036854775807";
- break;
- case 128:
- value = "170141183460469231731687303715884105727";
- break;
- default:
- abort ();
- }
-
- mlen = strlen (macro);
- vlen = strlen (value);
- extra = 2 + is_long;
- buf = alloca (mlen + vlen + extra);
-
- sprintf (buf, "%s=%s%s", macro, value,
- (is_long == 1 ? "L" : is_long == 2 ? "LL" : ""));
-
- cpp_define (parse_in, buf);
}
static void
#undef DEF_FN_ATTR
}
-/* Output a -Wshadow warning MSGID about NAME, an IDENTIFIER_NODE, and
- additionally give the location of the previous declaration DECL. */
+/* Output a -Wshadow warning MSGCODE about NAME, and give the location
+ of the previous declaration DECL. */
void
-shadow_warning (msgid, name, decl)
- const char *msgid;
- tree name, decl;
+shadow_warning (msgcode, name, decl)
+ enum sw_kind msgcode;
+ const char *name;
+ tree decl;
{
- warning ("declaration of `%s' shadows %s", IDENTIFIER_POINTER (name), msgid);
- warning_with_file_and_line (DECL_SOURCE_FILE (decl),
- DECL_SOURCE_LINE (decl),
- "shadowed declaration is here");
+ static const char *const msgs[] = {
+ /* SW_PARAM */ N_("declaration of \"%s\" shadows a parameter"),
+ /* SW_LOCAL */ N_("declaration of \"%s\" shadows a previous local"),
+ /* SW_GLOBAL */ N_("declaration of \"%s\" shadows a global declaration")
+ };
+
+ warning (msgs[msgcode], name);
+ warning ("%Hshadowed declaration is here", &DECL_SOURCE_LOCATION (decl));
}
/* Attribute handlers common to C front ends. */
struct attribute_spec.handler. */
static tree
-handle_used_attribute (node, name, args, flags, no_add_attrs)
- tree *node;
+handle_used_attribute (pnode, name, args, flags, no_add_attrs)
+ tree *pnode;
tree name;
tree args ATTRIBUTE_UNUSED;
int flags ATTRIBUTE_UNUSED;
bool *no_add_attrs;
{
- if (TREE_CODE (*node) == FUNCTION_DECL)
- TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (*node))
- = TREE_USED (*node) = 1;
+ tree node = *pnode;
+
+ if (TREE_CODE (node) == FUNCTION_DECL
+ || (TREE_CODE (node) == VAR_DECL && TREE_STATIC (node)))
+ TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (node))
+ = TREE_USED (node) = 1;
else
{
warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
int len = strlen (p);
enum machine_mode mode = VOIDmode;
tree typefm;
+ tree ptr_type;
if (len > 4 && p[0] == '_' && p[1] == '_'
&& p[len - 1] == '_' && p[len - 2] == '_')
else if (0 == (typefm = (*lang_hooks.types.type_for_mode)
(mode, TREE_UNSIGNED (type))))
error ("no data type for mode `%s'", p);
+ else if ((TREE_CODE (type) == POINTER_TYPE
+ || TREE_CODE (type) == REFERENCE_TYPE)
+ && !(*targetm.valid_pointer_mode) (mode))
+ error ("invalid pointer mode `%s'", p);
else
{
/* If this is a vector, make sure we either have hardware
return NULL_TREE;
}
+ if (TREE_CODE (type) == POINTER_TYPE)
+ {
+ ptr_type = build_pointer_type_for_mode (TREE_TYPE (type),
+ mode);
+ *node = ptr_type;
+ }
+ else if (TREE_CODE (type) == REFERENCE_TYPE)
+ {
+ ptr_type = build_reference_type_for_mode (TREE_TYPE (type),
+ mode);
+ *node = ptr_type;
+ }
+ else
*node = typefm;
/* No need to layout the type here. The caller should do this. */
}
}
if (strcmp (TREE_STRING_POINTER (id), "hidden")
&& strcmp (TREE_STRING_POINTER (id), "protected")
- && strcmp (TREE_STRING_POINTER (id), "internal"))
+ && strcmp (TREE_STRING_POINTER (id), "internal")
+ && strcmp (TREE_STRING_POINTER (id), "default"))
{
- error ("visibility arg must be one of \"hidden\", \"protected\" or \"internal\"");
+ error ("visibility arg must be one of \"default\", \"hidden\", \"protected\" or \"internal\"");
+ *no_add_attrs = true;
+ return NULL_TREE;
+ }
+ }
+
+ return NULL_TREE;
+}
+
+/* Handle an "tls_model" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_tls_model_attribute (node, name, args, flags, no_add_attrs)
+ tree *node;
+ tree name;
+ tree args;
+ int flags ATTRIBUTE_UNUSED;
+ bool *no_add_attrs;
+{
+ tree decl = *node;
+
+ if (! DECL_THREAD_LOCAL (decl))
+ {
+ warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ *no_add_attrs = true;
+ }
+ else
+ {
+ tree id;
+
+ id = TREE_VALUE (args);
+ if (TREE_CODE (id) != STRING_CST)
+ {
+ error ("tls_model arg not a string");
+ *no_add_attrs = true;
+ return NULL_TREE;
+ }
+ if (strcmp (TREE_STRING_POINTER (id), "local-exec")
+ && strcmp (TREE_STRING_POINTER (id), "initial-exec")
+ && strcmp (TREE_STRING_POINTER (id), "local-dynamic")
+ && strcmp (TREE_STRING_POINTER (id), "global-dynamic"))
+ {
+ error ("tls_model arg must be one of \"local-exec\", \"initial-exec\", \"local-dynamic\" or \"global-dynamic\"");
*no_add_attrs = true;
return NULL_TREE;
}
The normal mechanism to prevent duplicates is to use type_hash_canon, but
since we want to distinguish types that are essentially identical (except
for their debug representation), we use a local list here. */
-static tree vector_type_node_list = 0;
+static GTY(()) tree vector_type_node_list = 0;
/* Handle a "vector_size" attribute; arguments as in
struct attribute_spec.handler. */
unsigned HOST_WIDE_INT attr_arg_num;
/* If no arguments are specified, all pointer arguments should be
- non-null. Veryify a full prototype is given so that the arguments
+ non-null. Verify a full prototype is given so that the arguments
will have the correct types when we actually check them later. */
if (! args)
{
return NULL_TREE;
}
+
+/* Handle a "cleanup" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_cleanup_attribute (node, name, args, flags, no_add_attrs)
+ tree *node;
+ tree name;
+ tree args;
+ int flags ATTRIBUTE_UNUSED;
+ bool *no_add_attrs;
+{
+ tree decl = *node;
+ tree cleanup_id, cleanup_decl;
+
+ /* ??? Could perhaps support cleanups on TREE_STATIC, much like we do
+ for global destructors in C++. This requires infrastructure that
+ we don't have generically at the moment. It's also not a feature
+ we'd be missing too much, since we do have attribute constructor. */
+ if (TREE_CODE (decl) != VAR_DECL || TREE_STATIC (decl))
+ {
+ warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ *no_add_attrs = true;
+ return NULL_TREE;
+ }
+
+ /* Verify that the argument is a function in scope. */
+ /* ??? We could support pointers to functions here as well, if
+ that was considered desirable. */
+ cleanup_id = TREE_VALUE (args);
+ if (TREE_CODE (cleanup_id) != IDENTIFIER_NODE)
+ {
+ error ("cleanup arg not an identifier");
+ *no_add_attrs = true;
+ return NULL_TREE;
+ }
+ cleanup_decl = lookup_name (cleanup_id);
+ if (!cleanup_decl || TREE_CODE (cleanup_decl) != FUNCTION_DECL)
+ {
+ error ("cleanup arg not a function");
+ *no_add_attrs = true;
+ return NULL_TREE;
+ }
+
+ /* That the function has proper type is checked with the
+ eventual call to build_function_call. */
+
+ return NULL_TREE;
+}
\f
/* Check for valid arguments being passed to a function. */
void
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