--- /dev/null
+/* Define builtin-in macros for the C family front ends.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "tree.h"
+#include "version.h"
+#include "flags.h"
+#include "real.h"
+#include "c-common.h"
+#include "c-pragma.h"
+#include "output.h"
+#include "except.h" /* For USING_SJLJ_EXCEPTIONS. */
+#include "debug.h" /* For dwarf2out_do_frame. */
+#include "toplev.h"
+#include "tm_p.h" /* Target prototypes. */
+#include "target.h"
+
+#ifndef TARGET_OS_CPP_BUILTINS
+# define TARGET_OS_CPP_BUILTINS()
+#endif
+
+#ifndef TARGET_OBJFMT_CPP_BUILTINS
+# define TARGET_OBJFMT_CPP_BUILTINS()
+#endif
+
+#ifndef REGISTER_PREFIX
+#define REGISTER_PREFIX ""
+#endif
+
+/* Non-static as some targets don't use it. */
+void builtin_define_std (const char *) ATTRIBUTE_UNUSED;
+static void builtin_define_with_int_value (const char *, HOST_WIDE_INT);
+static void builtin_define_with_hex_fp_value (const char *, tree,
+ int, const char *,
+ const char *,
+ const char *);
+static void builtin_define_stdint_macros (void);
+static void builtin_define_type_max (const char *, tree, int);
+static void builtin_define_type_precision (const char *, tree);
+static void builtin_define_type_sizeof (const char *, tree);
+static void builtin_define_float_constants (const char *,
+ const char *,
+ const char *,
+ tree);
+static void define__GNUC__ (void);
+
+/* Define NAME with value TYPE precision. */
+static void
+builtin_define_type_precision (const char *name, tree type)
+{
+ builtin_define_with_int_value (name, TYPE_PRECISION (type));
+}
+
+/* Define NAME with value TYPE size_unit. */
+static void
+builtin_define_type_sizeof (const char *name, tree type)
+{
+ builtin_define_with_int_value (name,
+ tree_low_cst (TYPE_SIZE_UNIT (type), 1));
+}
+
+/* Define the float.h constants for TYPE using NAME_PREFIX, FP_SUFFIX,
+ and FP_CAST. */
+static void
+builtin_define_float_constants (const char *name_prefix,
+ const char *fp_suffix,
+ const char *fp_cast,
+ 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_MODE_FORMAT (TYPE_MODE (type));
+ gcc_assert (fmt->b != 10);
+
+ /* The radix of the exponent representation. */
+ if (type == float_type_node)
+ builtin_define_with_int_value ("__FLT_RADIX__", fmt->b);
+ log10_b = log10_2;
+
+ /* 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. */
+ get_max_float (fmt, buf, sizeof (buf));
+
+ sprintf (name, "__%s_MAX__", name_prefix);
+ builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast);
+
+ /* The minimum normalized positive floating-point number,
+ b**(emin-1). */
+ sprintf (name, "__%s_MIN__", name_prefix);
+ sprintf (buf, "0x1p%d", fmt->emin - 1);
+ builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast);
+
+ /* 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);
+ if (fmt->pnan < fmt->p)
+ /* This is an IBM extended double format, so 1.0 + any double is
+ representable precisely. */
+ sprintf (buf, "0x1p%d", fmt->emin - fmt->p);
+ else
+ sprintf (buf, "0x1p%d", 1 - fmt->p);
+ builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast);
+
+ /* 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);
+ builtin_define_with_hex_fp_value (name, type, decimal_dig,
+ buf, fp_suffix, fp_cast);
+ }
+ else
+ {
+ sprintf (buf, "0.0%s", fp_suffix);
+ builtin_define_with_value (name, buf, 0);
+ }
+
+ sprintf (name, "__%s_HAS_DENORM__", name_prefix);
+ builtin_define_with_value (name, fmt->has_denorm ? "1" : "0", 0);
+
+ /* For C++ std::numeric_limits<T>::has_infinity. */
+ sprintf (name, "__%s_HAS_INFINITY__", name_prefix);
+ builtin_define_with_int_value (name,
+ MODE_HAS_INFINITIES (TYPE_MODE (type)));
+ /* For C++ std::numeric_limits<T>::has_quiet_NaN. We do not have a
+ predicate to distinguish a target that has both quiet and
+ signalling NaNs from a target that has only quiet NaNs or only
+ signalling NaNs, so we assume that a target that has any kind of
+ NaN has quiet NaNs. */
+ sprintf (name, "__%s_HAS_QUIET_NAN__", name_prefix);
+ builtin_define_with_int_value (name, MODE_HAS_NANS (TYPE_MODE (type)));
+}
+
+/* Define __DECx__ constants for TYPE using NAME_PREFIX and SUFFIX. */
+static void
+builtin_define_decimal_float_constants (const char *name_prefix,
+ const char *suffix,
+ tree type)
+{
+ const struct real_format *fmt;
+ char name[64], buf[128], *p;
+ int digits;
+
+ fmt = REAL_MODE_FORMAT (TYPE_MODE (type));
+
+ /* The number of radix digits, p, in the significand. */
+ sprintf (name, "__%s_MANT_DIG__", name_prefix);
+ builtin_define_with_int_value (name, fmt->p);
+
+ /* 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 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);
+
+ /* Compute the minimum representable value. */
+ sprintf (name, "__%s_MIN__", name_prefix);
+ sprintf (buf, "1E%d%s", fmt->emin - 1, suffix);
+ builtin_define_with_value (name, buf, 0);
+
+ /* Compute the maximum representable value. */
+ sprintf (name, "__%s_MAX__", name_prefix);
+ p = buf;
+ for (digits = fmt->p; digits; digits--)
+ {
+ *p++ = '9';
+ if (digits == fmt->p)
+ *p++ = '.';
+ }
+ *p = 0;
+ /* fmt->p plus 1, to account for the decimal point and fmt->emax
+ minus 1 because the digits are nines, not 1.0. */
+ sprintf (&buf[fmt->p + 1], "E%d%s", fmt->emax - 1, suffix);
+ builtin_define_with_value (name, buf, 0);
+
+ /* Compute epsilon (the difference between 1 and least value greater
+ than 1 representable). */
+ sprintf (name, "__%s_EPSILON__", name_prefix);
+ sprintf (buf, "1E-%d%s", fmt->p - 1, suffix);
+ builtin_define_with_value (name, buf, 0);
+
+ /* Minimum subnormal positive decimal value. */
+ sprintf (name, "__%s_SUBNORMAL_MIN__", name_prefix);
+ p = buf;
+ for (digits = fmt->p; digits > 1; digits--)
+ {
+ *p++ = '0';
+ if (digits == fmt->p)
+ *p++ = '.';
+ }
+ *p = 0;
+ sprintf (&buf[fmt->p], "1E%d%s", fmt->emin - 1, suffix);
+ builtin_define_with_value (name, buf, 0);
+}
+
+/* Define fixed-point constants for TYPE using NAME_PREFIX and SUFFIX. */
+
+static void
+builtin_define_fixed_point_constants (const char *name_prefix,
+ const char *suffix,
+ tree type)
+{
+ char name[64], buf[256], *new_buf;
+ int i, mod;
+
+ sprintf (name, "__%s_FBIT__", name_prefix);
+ builtin_define_with_int_value (name, TYPE_FBIT (type));
+
+ sprintf (name, "__%s_IBIT__", name_prefix);
+ builtin_define_with_int_value (name, TYPE_IBIT (type));
+
+ /* If there is no suffix, defines are for fixed-point modes.
+ We just return. */
+ if (strcmp (suffix, "") == 0)
+ return;
+
+ if (TYPE_UNSIGNED (type))
+ {
+ sprintf (name, "__%s_MIN__", name_prefix);
+ sprintf (buf, "0.0%s", suffix);
+ builtin_define_with_value (name, buf, 0);
+ }
+ else
+ {
+ sprintf (name, "__%s_MIN__", name_prefix);
+ if (ALL_ACCUM_MODE_P (TYPE_MODE (type)))
+ sprintf (buf, "(-0X1P%d%s-0X1P%d%s)", TYPE_IBIT (type) - 1, suffix,
+ TYPE_IBIT (type) - 1, suffix);
+ else
+ sprintf (buf, "(-0.5%s-0.5%s)", suffix, suffix);
+ builtin_define_with_value (name, buf, 0);
+ }
+
+ sprintf (name, "__%s_MAX__", name_prefix);
+ sprintf (buf, "0X");
+ new_buf = buf + 2;
+ mod = (TYPE_FBIT (type) + TYPE_IBIT (type)) % 4;
+ if (mod)
+ sprintf (new_buf++, "%x", (1 << mod) - 1);
+ for (i = 0; i < (TYPE_FBIT (type) + TYPE_IBIT (type)) / 4; i++)
+ sprintf (new_buf++, "F");
+ sprintf (new_buf, "P-%d%s", TYPE_FBIT (type), suffix);
+ builtin_define_with_value (name, buf, 0);
+
+ sprintf (name, "__%s_EPSILON__", name_prefix);
+ sprintf (buf, "0x1P-%d%s", TYPE_FBIT (type), suffix);
+ builtin_define_with_value (name, buf, 0);
+}
+
+/* Define __GNUC__, __GNUC_MINOR__ and __GNUC_PATCHLEVEL__. */
+static void
+define__GNUC__ (void)
+{
+ int major, minor, patchlevel;
+
+ if (sscanf (BASEVER, "%d.%d.%d", &major, &minor, &patchlevel) != 3)
+ {
+ sscanf (BASEVER, "%d.%d", &major, &minor);
+ patchlevel = 0;
+ }
+ cpp_define_formatted (parse_in, "__GNUC__=%d", major);
+ cpp_define_formatted (parse_in, "__GNUC_MINOR__=%d", minor);
+ cpp_define_formatted (parse_in, "__GNUC_PATCHLEVEL__=%d", patchlevel);
+
+ if (c_dialect_cxx ())
+ cpp_define_formatted (parse_in, "__GNUG__=%d", major);
+}
+
+/* Define macros used by <stdint.h>. Currently only defines limits
+ for intmax_t, used by the testsuite. */
+static void
+builtin_define_stdint_macros (void)
+{
+ int intmax_long;
+ if (intmax_type_node == long_long_integer_type_node)
+ intmax_long = 2;
+ else if (intmax_type_node == long_integer_type_node)
+ intmax_long = 1;
+ else if (intmax_type_node == integer_type_node)
+ intmax_long = 0;
+ else
+ gcc_unreachable ();
+ builtin_define_type_max ("__INTMAX_MAX__", intmax_type_node, intmax_long);
+}
+
+/* Adjust the optimization macros when a #pragma GCC optimization is done to
+ reflect the current level. */
+void
+c_cpp_builtins_optimize_pragma (cpp_reader *pfile, tree prev_tree,
+ tree cur_tree)
+{
+ struct cl_optimization *prev = TREE_OPTIMIZATION (prev_tree);
+ struct cl_optimization *cur = TREE_OPTIMIZATION (cur_tree);
+ bool prev_fast_math;
+ bool cur_fast_math;
+
+ /* -undef turns off target-specific built-ins. */
+ if (flag_undef)
+ return;
+
+ /* Other target-independent built-ins determined by command-line
+ options. */
+ if (!prev->optimize_size && cur->optimize_size)
+ cpp_define (pfile, "__OPTIMIZE_SIZE__");
+ else if (prev->optimize_size && !cur->optimize_size)
+ cpp_undef (pfile, "__OPTIMIZE_SIZE__");
+
+ if (!prev->optimize && cur->optimize)
+ cpp_define (pfile, "__OPTIMIZE__");
+ else if (prev->optimize && !cur->optimize)
+ cpp_undef (pfile, "__OPTIMIZE__");
+
+ prev_fast_math = fast_math_flags_struct_set_p (prev);
+ cur_fast_math = fast_math_flags_struct_set_p (cur);
+ if (!prev_fast_math && cur_fast_math)
+ cpp_define (pfile, "__FAST_MATH__");
+ else if (prev_fast_math && !cur_fast_math)
+ cpp_undef (pfile, "__FAST_MATH__");
+
+ if (!prev->flag_signaling_nans && cur->flag_signaling_nans)
+ cpp_define (pfile, "__SUPPORT_SNAN__");
+ else if (prev->flag_signaling_nans && !cur->flag_signaling_nans)
+ cpp_undef (pfile, "__SUPPORT_SNAN__");
+
+ if (!prev->flag_finite_math_only && cur->flag_finite_math_only)
+ {
+ cpp_undef (pfile, "__FINITE_MATH_ONLY__");
+ cpp_define (pfile, "__FINITE_MATH_ONLY__=1");
+ }
+ else if (!prev->flag_finite_math_only && cur->flag_finite_math_only)
+ {
+ cpp_undef (pfile, "__FINITE_MATH_ONLY__");
+ cpp_define (pfile, "__FINITE_MATH_ONLY__=0");
+ }
+}
+
+
+/* Hook that registers front end and target-specific built-ins. */
+void
+c_cpp_builtins (cpp_reader *pfile)
+{
+ /* -undef turns off target-specific built-ins. */
+ if (flag_undef)
+ return;
+
+ define__GNUC__ ();
+
+ /* For stddef.h. They require macros defined in c-common.c. */
+ c_stddef_cpp_builtins ();
+
+ if (c_dialect_cxx ())
+ {
+ if (flag_weak && SUPPORTS_ONE_ONLY)
+ cpp_define (pfile, "__GXX_WEAK__=1");
+ else
+ cpp_define (pfile, "__GXX_WEAK__=0");
+ if (warn_deprecated)
+ cpp_define (pfile, "__DEPRECATED");
+ if (flag_rtti)
+ cpp_define (pfile, "__GXX_RTTI");
+ if (cxx_dialect == cxx0x)
+ cpp_define (pfile, "__GXX_EXPERIMENTAL_CXX0X__");
+ }
+ /* Note that we define this for C as well, so that we know if
+ __attribute__((cleanup)) will interface with EH. */
+ if (flag_exceptions)
+ cpp_define (pfile, "__EXCEPTIONS");
+
+ /* Represents the C++ ABI version, always defined so it can be used while
+ preprocessing C and assembler. */
+ if (flag_abi_version == 0)
+ /* Use a very large value so that:
+
+ #if __GXX_ABI_VERSION >= <value for version X>
+
+ will work whether the user explicitly says "-fabi-version=x" or
+ "-fabi-version=0". Do not use INT_MAX because that will be
+ different from system to system. */
+ builtin_define_with_int_value ("__GXX_ABI_VERSION", 999999);
+ else if (flag_abi_version == 1)
+ /* Due to a historical accident, this version had the value
+ "102". */
+ builtin_define_with_int_value ("__GXX_ABI_VERSION", 102);
+ else
+ /* Newer versions have values 1002, 1003, .... */
+ builtin_define_with_int_value ("__GXX_ABI_VERSION",
+ 1000 + flag_abi_version);
+
+ /* libgcc needs to know this. */
+ if (USING_SJLJ_EXCEPTIONS)
+ cpp_define (pfile, "__USING_SJLJ_EXCEPTIONS__");
+
+ /* 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_max ("__WCHAR_MAX__", wchar_type_node, 0);
+
+ builtin_define_type_precision ("__CHAR_BIT__", char_type_node);
+
+ /* stdint.h (eventually) and the testsuite need to know these. */
+ builtin_define_stdint_macros ();
+
+ /* float.h needs to know these. */
+
+ builtin_define_with_int_value ("__FLT_EVAL_METHOD__",
+ TARGET_FLT_EVAL_METHOD);
+
+ /* And decfloat.h needs this. */
+ builtin_define_with_int_value ("__DEC_EVAL_METHOD__",
+ TARGET_DEC_EVAL_METHOD);
+
+ builtin_define_float_constants ("FLT", "F", "%s", float_type_node);
+ /* Cast the double precision constants when single precision constants are
+ specified. The correct result is computed by the compiler when using
+ macros that include a cast. This has the side-effect of making the value
+ unusable in const expressions. */
+ if (flag_single_precision_constant)
+ builtin_define_float_constants ("DBL", "L", "((double)%s)", double_type_node);
+ else
+ builtin_define_float_constants ("DBL", "", "%s", double_type_node);
+ builtin_define_float_constants ("LDBL", "L", "%s", long_double_type_node);
+
+ /* For decfloat.h. */
+ builtin_define_decimal_float_constants ("DEC32", "DF", dfloat32_type_node);
+ builtin_define_decimal_float_constants ("DEC64", "DD", dfloat64_type_node);
+ builtin_define_decimal_float_constants ("DEC128", "DL", dfloat128_type_node);
+
+ /* For fixed-point fibt, ibit, max, min, and epsilon. */
+ if (targetm.fixed_point_supported_p ())
+ {
+ builtin_define_fixed_point_constants ("SFRACT", "HR",
+ short_fract_type_node);
+ builtin_define_fixed_point_constants ("USFRACT", "UHR",
+ unsigned_short_fract_type_node);
+ builtin_define_fixed_point_constants ("FRACT", "R",
+ fract_type_node);
+ builtin_define_fixed_point_constants ("UFRACT", "UR",
+ unsigned_fract_type_node);
+ builtin_define_fixed_point_constants ("LFRACT", "LR",
+ long_fract_type_node);
+ builtin_define_fixed_point_constants ("ULFRACT", "ULR",
+ unsigned_long_fract_type_node);
+ builtin_define_fixed_point_constants ("LLFRACT", "LLR",
+ long_long_fract_type_node);
+ builtin_define_fixed_point_constants ("ULLFRACT", "ULLR",
+ unsigned_long_long_fract_type_node);
+ builtin_define_fixed_point_constants ("SACCUM", "HK",
+ short_accum_type_node);
+ builtin_define_fixed_point_constants ("USACCUM", "UHK",
+ unsigned_short_accum_type_node);
+ builtin_define_fixed_point_constants ("ACCUM", "K",
+ accum_type_node);
+ builtin_define_fixed_point_constants ("UACCUM", "UK",
+ unsigned_accum_type_node);
+ builtin_define_fixed_point_constants ("LACCUM", "LK",
+ long_accum_type_node);
+ builtin_define_fixed_point_constants ("ULACCUM", "ULK",
+ unsigned_long_accum_type_node);
+ builtin_define_fixed_point_constants ("LLACCUM", "LLK",
+ long_long_accum_type_node);
+ builtin_define_fixed_point_constants ("ULLACCUM", "ULLK",
+ unsigned_long_long_accum_type_node);
+
+ builtin_define_fixed_point_constants ("QQ", "", qq_type_node);
+ builtin_define_fixed_point_constants ("HQ", "", hq_type_node);
+ builtin_define_fixed_point_constants ("SQ", "", sq_type_node);
+ builtin_define_fixed_point_constants ("DQ", "", dq_type_node);
+ builtin_define_fixed_point_constants ("TQ", "", tq_type_node);
+ builtin_define_fixed_point_constants ("UQQ", "", uqq_type_node);
+ builtin_define_fixed_point_constants ("UHQ", "", uhq_type_node);
+ builtin_define_fixed_point_constants ("USQ", "", usq_type_node);
+ builtin_define_fixed_point_constants ("UDQ", "", udq_type_node);
+ builtin_define_fixed_point_constants ("UTQ", "", utq_type_node);
+ builtin_define_fixed_point_constants ("HA", "", ha_type_node);
+ builtin_define_fixed_point_constants ("SA", "", sa_type_node);
+ builtin_define_fixed_point_constants ("DA", "", da_type_node);
+ builtin_define_fixed_point_constants ("TA", "", ta_type_node);
+ builtin_define_fixed_point_constants ("UHA", "", uha_type_node);
+ builtin_define_fixed_point_constants ("USA", "", usa_type_node);
+ builtin_define_fixed_point_constants ("UDA", "", uda_type_node);
+ builtin_define_fixed_point_constants ("UTA", "", uta_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);
+
+ if (flag_gnu89_inline)
+ cpp_define (pfile, "__GNUC_GNU_INLINE__");
+ else
+ cpp_define (pfile, "__GNUC_STDC_INLINE__");
+
+ /* Definitions for LP64 model. */
+ if (TYPE_PRECISION (long_integer_type_node) == 64
+ && POINTER_SIZE == 64
+ && TYPE_PRECISION (integer_type_node) == 32)
+ {
+ cpp_define (pfile, "_LP64");
+ cpp_define (pfile, "__LP64__");
+ }
+
+ /* 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 (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_pic)
+ {
+ builtin_define_with_int_value ("__pic__", flag_pic);
+ builtin_define_with_int_value ("__PIC__", flag_pic);
+ }
+ if (flag_pie)
+ {
+ builtin_define_with_int_value ("__pie__", flag_pie);
+ builtin_define_with_int_value ("__PIE__", flag_pie);
+ }
+
+ if (flag_iso)
+ cpp_define (pfile, "__STRICT_ANSI__");
+
+ if (!flag_signed_char)
+ cpp_define (pfile, "__CHAR_UNSIGNED__");
+
+ if (c_dialect_cxx () && TYPE_UNSIGNED (wchar_type_node))
+ cpp_define (pfile, "__WCHAR_UNSIGNED__");
+
+ /* Tell source code if the compiler makes sync_compare_and_swap
+ builtins available. */
+#ifdef HAVE_sync_compare_and_swapqi
+ if (HAVE_sync_compare_and_swapqi)
+ cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1");
+#endif
+
+#ifdef HAVE_sync_compare_and_swaphi
+ if (HAVE_sync_compare_and_swaphi)
+ cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2");
+#endif
+
+#ifdef HAVE_sync_compare_and_swapsi
+ if (HAVE_sync_compare_and_swapsi)
+ cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4");
+#endif
+
+#ifdef HAVE_sync_compare_and_swapdi
+ if (HAVE_sync_compare_and_swapdi)
+ cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8");
+#endif
+
+#ifdef HAVE_sync_compare_and_swapti
+ if (HAVE_sync_compare_and_swapti)
+ cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16");
+#endif
+
+#ifdef DWARF2_UNWIND_INFO
+ if (dwarf2out_do_cfi_asm ())
+ cpp_define (pfile, "__GCC_HAVE_DWARF2_CFI_ASM");
+#endif
+
+ /* Make the choice of ObjC runtime visible to source code. */
+ if (c_dialect_objc () && flag_next_runtime)
+ cpp_define (pfile, "__NEXT_RUNTIME__");
+
+ /* Show the availability of some target pragmas. */
+ if (flag_mudflap || targetm.handle_pragma_redefine_extname)
+ cpp_define (pfile, "__PRAGMA_REDEFINE_EXTNAME");
+
+ if (targetm.handle_pragma_extern_prefix)
+ cpp_define (pfile, "__PRAGMA_EXTERN_PREFIX");
+
+ /* Make the choice of the stack protector runtime visible to source code.
+ The macro names and values here were chosen for compatibility with an
+ earlier implementation, i.e. ProPolice. */
+ if (flag_stack_protect == 2)
+ cpp_define (pfile, "__SSP_ALL__=2");
+ else if (flag_stack_protect == 1)
+ cpp_define (pfile, "__SSP__=1");
+
+ if (flag_openmp)
+ cpp_define (pfile, "_OPENMP=200805");
+
+ builtin_define_type_sizeof ("__SIZEOF_INT__", integer_type_node);
+ builtin_define_type_sizeof ("__SIZEOF_LONG__", long_integer_type_node);
+ builtin_define_type_sizeof ("__SIZEOF_LONG_LONG__",
+ long_long_integer_type_node);
+ builtin_define_type_sizeof ("__SIZEOF_SHORT__", short_integer_type_node);
+ builtin_define_type_sizeof ("__SIZEOF_FLOAT__", float_type_node);
+ builtin_define_type_sizeof ("__SIZEOF_DOUBLE__", double_type_node);
+ builtin_define_type_sizeof ("__SIZEOF_LONG_DOUBLE__", long_double_type_node);
+ builtin_define_type_sizeof ("__SIZEOF_SIZE_T__", size_type_node);
+ builtin_define_type_sizeof ("__SIZEOF_WCHAR_T__", wchar_type_node);
+ builtin_define_type_sizeof ("__SIZEOF_WINT_T__", wint_type_node);
+ builtin_define_type_sizeof ("__SIZEOF_PTRDIFF_T__",
+ unsigned_ptrdiff_type_node);
+ /* ptr_type_node can't be used here since ptr_mode is only set when
+ toplev calls backend_init which is not done with -E switch. */
+ builtin_define_with_int_value ("__SIZEOF_POINTER__",
+ POINTER_SIZE / BITS_PER_UNIT);
+
+ /* 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 ();
+ TARGET_OBJFMT_CPP_BUILTINS ();
+
+ /* Support the __declspec keyword by turning them into attributes.
+ Note that the current way we do this may result in a collision
+ with predefined attributes later on. This can be solved by using
+ one attribute, say __declspec__, and passing args to it. The
+ problem with that approach is that args are not accumulated: each
+ new appearance would clobber any existing args. */
+ if (TARGET_DECLSPEC)
+ builtin_define ("__declspec(x)=__attribute__((x))");
+
+ /* If decimal floating point is supported, tell the user if the
+ alternate format (BID) is used instead of the standard (DPD)
+ format. */
+ if (ENABLE_DECIMAL_FLOAT && ENABLE_DECIMAL_BID_FORMAT)
+ cpp_define (pfile, "__DECIMAL_BID_FORMAT__");
+
+ builtin_define_with_int_value ("__BIGGEST_ALIGNMENT__",
+ BIGGEST_ALIGNMENT / BITS_PER_UNIT);
+}
+
+/* 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 (const char *macro)
+{
+ size_t len = strlen (macro);
+ char *buff = (char *) 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. */
+void
+builtin_define_with_value (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 = (char *) 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 (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 = (char *) 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 (const char *macro,
+ tree type, int digits,
+ const char *hex_str,
+ const char *fp_suffix,
+ const char *fp_cast)
+{
+ REAL_VALUE_TYPE real;
+ char dec_str[64], buf1[256], buf2[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_for_mode (dec_str, &real, sizeof (dec_str), digits, 0,
+ TYPE_MODE (type));
+
+ /* Assemble the macro in the following fashion
+ macro = fp_cast [dec_str fp_suffix] */
+ sprintf (buf1, "%s%s", dec_str, fp_suffix);
+ sprintf (buf2, fp_cast, buf1);
+ sprintf (buf1, "%s=%s", macro, buf2);
+
+ cpp_define (parse_in, buf1);
+}
+
+/* Define MAX for TYPE based on the precision of the type. IS_LONG is
+ 1 for type "long" and 2 for "long long". We have to handle
+ unsigned types, since wchar_t might be unsigned. */
+
+static void
+builtin_define_type_max (const char *macro, tree type, int is_long)
+{
+ static const char *const values[]
+ = { "127", "255",
+ "32767", "65535",
+ "2147483647", "4294967295",
+ "9223372036854775807", "18446744073709551615",
+ "170141183460469231731687303715884105727",
+ "340282366920938463463374607431768211455" };
+ static const char *const suffixes[] = { "", "U", "L", "UL", "LL", "ULL" };
+
+ const char *value, *suffix;
+ char *buf;
+ size_t idx;
+
+ /* 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: idx = 0; break;
+ case 16: idx = 2; break;
+ case 32: idx = 4; break;
+ case 64: idx = 6; break;
+ case 128: idx = 8; break;
+ default: gcc_unreachable ();
+ }
+
+ value = values[idx + TYPE_UNSIGNED (type)];
+ suffix = suffixes[is_long * 2 + TYPE_UNSIGNED (type)];
+
+ buf = (char *) alloca (strlen (macro) + 1 + strlen (value)
+ + strlen (suffix) + 1);
+ sprintf (buf, "%s=%s%s", macro, value, suffix);
+
+ cpp_define (parse_in, buf);
+}
projects / msp430-gcc.git / blobdiff