| /* Define builtin-in macros for all front ends that perform preprocessing |
| Copyright (C) 2010-2019 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 "memmodel.h" |
| #include "target.h" |
| #include "tree.h" |
| #include "version.h" |
| #include "flags.h" |
| #include "cpplib.h" |
| #include "cppbuiltin.h" |
| |
| |
| /* Parse a BASEVER version string of the format "major.minor.patchlevel" |
| or "major.minor" to extract its components. */ |
| void |
| parse_basever (int *major, int *minor, int *patchlevel) |
| { |
| static int s_major = -1, s_minor, s_patchlevel; |
| |
| if (s_major == -1) |
| if (sscanf (BASEVER, "%d.%d.%d", &s_major, &s_minor, &s_patchlevel) != 3) |
| { |
| sscanf (BASEVER, "%d.%d", &s_major, &s_minor); |
| s_patchlevel = 0; |
| } |
| |
| if (major) |
| *major = s_major; |
| |
| if (minor) |
| *minor = s_minor; |
| |
| if (patchlevel) |
| *patchlevel = s_patchlevel; |
| } |
| |
| |
| /* Define __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__ and __VERSION__. */ |
| static void |
| define__GNUC__ (cpp_reader *pfile) |
| { |
| int major, minor, patchlevel; |
| |
| parse_basever (&major, &minor, &patchlevel); |
| cpp_define_formatted (pfile, "__GNUC__=%d", major); |
| cpp_define_formatted (pfile, "__GNUC_MINOR__=%d", minor); |
| cpp_define_formatted (pfile, "__GNUC_PATCHLEVEL__=%d", patchlevel); |
| cpp_define_formatted (pfile, "__VERSION__=\"%s\"", version_string); |
| cpp_define_formatted (pfile, "__ATOMIC_RELAXED=%d", MEMMODEL_RELAXED); |
| cpp_define_formatted (pfile, "__ATOMIC_SEQ_CST=%d", MEMMODEL_SEQ_CST); |
| cpp_define_formatted (pfile, "__ATOMIC_ACQUIRE=%d", MEMMODEL_ACQUIRE); |
| cpp_define_formatted (pfile, "__ATOMIC_RELEASE=%d", MEMMODEL_RELEASE); |
| cpp_define_formatted (pfile, "__ATOMIC_ACQ_REL=%d", MEMMODEL_ACQ_REL); |
| cpp_define_formatted (pfile, "__ATOMIC_CONSUME=%d", MEMMODEL_CONSUME); |
| } |
| |
| |
| /* Define various built-in CPP macros that depend on language-independent |
| compilation flags. */ |
| static void |
| define_builtin_macros_for_compilation_flags (cpp_reader *pfile) |
| { |
| if (flag_pic) |
| { |
| cpp_define_formatted (pfile, "__pic__=%d", flag_pic); |
| cpp_define_formatted (pfile, "__PIC__=%d", flag_pic); |
| } |
| if (flag_pie) |
| { |
| cpp_define_formatted (pfile, "__pie__=%d", flag_pie); |
| cpp_define_formatted (pfile, "__PIE__=%d", flag_pie); |
| } |
| |
| if (flag_sanitize & SANITIZE_ADDRESS) |
| cpp_define (pfile, "__SANITIZE_ADDRESS__"); |
| |
| if (flag_sanitize & SANITIZE_THREAD) |
| cpp_define (pfile, "__SANITIZE_THREAD__"); |
| |
| if (optimize_size) |
| cpp_define (pfile, "__OPTIMIZE_SIZE__"); |
| if (optimize) |
| cpp_define (pfile, "__OPTIMIZE__"); |
| |
| if (fast_math_flags_set_p (&global_options)) |
| cpp_define (pfile, "__FAST_MATH__"); |
| if (flag_signaling_nans) |
| cpp_define (pfile, "__SUPPORT_SNAN__"); |
| if (!flag_errno_math) |
| cpp_define (pfile, "__NO_MATH_ERRNO__"); |
| |
| cpp_define_formatted (pfile, "__FINITE_MATH_ONLY__=%d", |
| flag_finite_math_only); |
| } |
| |
| |
| /* Define built-in macros for LP64 targets. */ |
| static void |
| define_builtin_macros_for_lp64 (cpp_reader *pfile) |
| { |
| 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__"); |
| } |
| } |
| |
| |
| /* Define macros for size of basic C types. */ |
| static void |
| define_builtin_macros_for_type_sizes (cpp_reader *pfile) |
| { |
| #define define_type_sizeof(NAME, TYPE) \ |
| cpp_define_formatted (pfile, NAME"=" HOST_WIDE_INT_PRINT_DEC, \ |
| tree_to_uhwi (TYPE_SIZE_UNIT (TYPE))) |
| |
| define_type_sizeof ("__SIZEOF_INT__", integer_type_node); |
| define_type_sizeof ("__SIZEOF_LONG__", long_integer_type_node); |
| define_type_sizeof ("__SIZEOF_LONG_LONG__", long_long_integer_type_node); |
| define_type_sizeof ("__SIZEOF_SHORT__", short_integer_type_node); |
| define_type_sizeof ("__SIZEOF_FLOAT__", float_type_node); |
| define_type_sizeof ("__SIZEOF_DOUBLE__", double_type_node); |
| define_type_sizeof ("__SIZEOF_LONG_DOUBLE__", long_double_type_node); |
| define_type_sizeof ("__SIZEOF_SIZE_T__", size_type_node); |
| |
| #undef define_type_sizeof |
| |
| cpp_define_formatted (pfile, "__CHAR_BIT__=%u", |
| TYPE_PRECISION (char_type_node)); |
| cpp_define_formatted (pfile, "__BIGGEST_ALIGNMENT__=%d", |
| BIGGEST_ALIGNMENT / BITS_PER_UNIT); |
| |
| /* Define constants useful for implementing endian.h. */ |
| cpp_define (pfile, "__ORDER_LITTLE_ENDIAN__=1234"); |
| cpp_define (pfile, "__ORDER_BIG_ENDIAN__=4321"); |
| cpp_define (pfile, "__ORDER_PDP_ENDIAN__=3412"); |
| |
| if (WORDS_BIG_ENDIAN == BYTES_BIG_ENDIAN) |
| cpp_define_formatted (pfile, "__BYTE_ORDER__=%s", |
| (WORDS_BIG_ENDIAN |
| ? "__ORDER_BIG_ENDIAN__" |
| : "__ORDER_LITTLE_ENDIAN__")); |
| else |
| { |
| /* Assert that we're only dealing with the PDP11 case. */ |
| gcc_assert (!BYTES_BIG_ENDIAN); |
| gcc_assert (WORDS_BIG_ENDIAN); |
| |
| cpp_define (pfile, "__BYTE_ORDER__=__ORDER_PDP_ENDIAN__"); |
| } |
| |
| cpp_define_formatted (pfile, "__FLOAT_WORD_ORDER__=%s", |
| (targetm.float_words_big_endian () |
| ? "__ORDER_BIG_ENDIAN__" |
| : "__ORDER_LITTLE_ENDIAN__")); |
| |
| /* 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. */ |
| cpp_define_formatted (pfile, "__SIZEOF_POINTER__=%d", |
| 1 << ceil_log2 ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT)); |
| } |
| |
| |
| /* Define macros builtins common to all language performing CPP |
| preprocessing. */ |
| void |
| define_language_independent_builtin_macros (cpp_reader *pfile) |
| { |
| define__GNUC__ (pfile); |
| define_builtin_macros_for_compilation_flags (pfile); |
| define_builtin_macros_for_lp64 (pfile); |
| define_builtin_macros_for_type_sizes (pfile); |
| } |