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system.H
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system.H
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/*-
* Copyright (c) 1998, 2002-2008 Kiyoshi Matsui <kmatsui@t3.rim.or.jp>
* All rights reserved.
*
* Some parts of this code are derived from the public domain software
* DECUS cpp (1984,1985) written by Martin Minow.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* S Y S T E M . H
* S y s t e m D e p e n d e n t
* D e f i n i t i o n s f o r M C P P
*
* Definitions in this file may be edited to configure MCPP for particular
* operating systems and compiler configurations.
*
* Note: MCPP assumes the system implement the Ascii character set.
* If this is not the case, you will have to do some editing here and there.
*/
#define SYSTEM_H
#if HAVE_CONFIG_H
#include "configed.H"
#else
#include "noconfig.H"
#endif
/* Some system has a wrong definition of UCHAR_MAX. See cpp-test.html#5.1.3 */
#if UCHARMAX < -255
/* The definition of UCHARMAX (possibly UCHAR_MAX too) is wrong. */
/* Define it as a signed int value, not as an unsigned value. */
#undef UCHARMAX
#define UCHARMAX ((1 << CHAR_BIT) - 1)
#endif
/*
* PART 1 and PART 2 are defined in the above header files.
*/
/*
* P A R T 1 Configurations for target-operating-system
* and target-compiler.
*/
/*
* P A R T 2 Configurations for host-compiler.
*/
/*
* P A R T 3 Configurations for default settings, typedefs and
* translation limits.
*/
/*
* The variable 'mcpp_mode' specifies the mode of preprocessing as one of
* OLD_PREP, KR, STD, or POST_STD.
* Those modes have many differences each other --
* i.e. handling of translation phases; handling of some
* preprocessing tokens; availability of some directives; way of
* macro expansion;
* -- as follows.
*
* KR Actual arguments of a macro are expanded (after substitution)
* with rest of the replacement text and the subsequent source text.
* ## in macro definition has no significance to cpp. The surrounding
* tokens are macro-expanded separately. Also, # has no significance
* to cpp. The following token is expanded.
* Directly or intermediately recursive macro call causes an error.
* <backslash><newline> sequence is deleted only in string literals
* and in #define directive lines.
* sizeof (type) can be used in #if line.
* KR corresponds to the "K&R 1st."
*
* OLD_PREP In addition to the KR specifications, this mode has the
* following characteristics (and some others).
* Converts comment to 0 space instead of 1 space.
* Expands the parameter like spelling in string literal as a macro.
* Does not check unmatched pair of '"' or '\''.
* OLD_PREP corresponts to "Reiser model" cpp.
*
* STD Standard conforming mode.
* <backslash><newline> sequence is always deleted after trigraph
* conversion and before tokenization.
* Digraph sequences are recognized as tokens.
* Actual arguments of a macro are expanded separately prior to
* re-scanning of the replacement text.
* The name in the replacement text once expanded is not re-expanded,
* thus preventing recursive death.
* ## in macro definition concatenates tokens. The tokens are not
* expanded. The concatenated token is expanded by rescanning.
* # in macro definition stringizes the following argument. The argument
* is not expanded. \ is inserted before " and \ in or surrounding
* the string literal or character constant.
* An expanded macro is surrounded by spaces to prevent unintended
* token merging.
*
* POST_STD This mode simplifies the behavior of STD mode as follows.
* 1. Digraph sequences are converted in translation phase 1, as
* alternate characters rather than as tokens.
* 2. A space is inserted as a token separator between any tokens in
* a source (except a macro name and the next '(' in macro
* definition): thus simplifying tokenization, test of macro
* redefinition and macro expansion, especially "stringization".
* 3. Test of macro redefinition ignores difference of parameter names,
* test of which has little utility and not a little overhead.
* 4. #if expression forbids character constants, which have little
* portability, little utility and not a little overhead.
* 5. Rescanning of a macro expansion is limited in the replacement
* text, rest of the source file is not scanned, thus making the
* syntax of "function-like" macro call more similar to that of
* function call.
* 6. Argument of #include directive in <header.h> form is an obsolescent
* feature.
* 7. '$' or so are not treated specially in #define directive.
* 8. Trigraphs, UCN (universal-character name) are not recognized.
* 9. Multi-byte characters in an identifier are not recognized.
*
* The following specifications are available when mode is STD or POST_STD.
* preprocessing number token, digraphs,
* #pragma (#pragma MCPP put_defines, #pragma MCPP warning
* , #pragma MCPP debug) directive,
* #error directive,
* #if defined operator, #elif directive,
* predefined macros __FILE__, __LINE__, __DATE__, __TIME__
* , __STDC__, __STDC_VERSION__, __STDC_HOSTED__,
* wide character constant, wide character string literal,
* _Pragma() operator, variable-arguments macro,
* macro as an argument of #include, #line directives,
* escape sequences \x[hex-digits], \a, \v,
* '+' option (C++ preprocessing),
* 'S<n>' option (re-defines __STDC__ as <n>, unpredefine some macros),
* 'V<n>' option (re-defines __STDC_VERSION__ or __cplusplus as <n>),
* 'h<n>' option (re-defines __STDC_HOSTED__ as <n>).
* The following specifications are available only in STD mode.
* Trigraphs and UCN,
* Multi-byte characters in an identifier.
* The following specifications are available only in KR and OLD_PREP modes.
* #assert, #asm, #endasm, #put_defines, #debug and some other older
* directives,
* argument of #line directive other than decimal-digits.
*/
/* The values of 'mcpp_mode'. */
#define OLD_PREP 1 /* "Reiser" cpp mode */
#define KR 2 /* K&R 1st mode */
#define STD 3 /* Standard moce */
#define POST_STD 9 /* Special mode of MCPP */
/*
* TRIGRAPHS_INIT Initial value for the -3 option. If TRUE -3
* disables trigraphs, if FALSE -3 enables them.
* DIGRAPHS_INIT Initial value for the -2 option. If TRUE -2
* disables digraphs, if FALSE -2 enables them.
* OK_UCN Enable recognition of Universal-Character-Name sequence
* by -V199901L option.
* OK_MBIDENT Enable multi-byte characters in identifier by -V199901L
* option.
* EXPAND_PRAGMA Enable macro expansion of #pragma line (even in modes
* other than C99).
* expr_t, uexpr_t Type of maximum integer:
* long long (unsigned long long) or longer.
* EXPR_MAX should be defined to the maximum value of uexpr_t.
*/
#define TRIGRAPHS_INIT FALSE
#define DIGRAPHS_INIT FALSE
#ifndef EXPAND_PRAGMA
#define EXPAND_PRAGMA FALSE
#endif
#define OK_UCN TRUE
#define OK_MBIDENT FALSE
#if HAVE_INTMAX_T
#if HAVE_STDINT_H
#include "stdint.h"
#elif HAVE_INTTYPES_H
#include "inttypes.h"
#endif
typedef intmax_t expr_t;
typedef uintmax_t uexpr_t;
#else
#if HAVE_LONG_LONG
#if (HOST_COMPILER == MSC && _MSC_VER < 1500) || HOST_COMPILER == BORLANDC
typedef __int64 expr_t;
typedef unsigned __int64 uexpr_t;
#else
typedef long long expr_t;
typedef unsigned long long uexpr_t;
#endif
#else /* !HAVE_LONG_LONG */
typedef unsigned long uexpr_t;
typedef long expr_t;
#endif /* HAVE_LONG_LONG */
#endif /* HAVE_INTMAX_T */
#if HAVE_INTMAX_T
#define EXPR_MAX UINTMAX_MAX
#elif HAVE_LONG_LONG
#if (HOST_COMPILER == MSC && _MSC_VER < 1400) || HOST_COMPILER == BORLANDC
#define EXPR_MAX 0xFFFFFFFFFFFFFFFFui64
#else
#define EXPR_MAX 0xFFFFFFFFFFFFFFFFULL
#endif
#else
#define EXPR_MAX 4294967295UL
#endif
/*
* Translation limits.
* The following definitions are used to allocate memory for work buffers.
*
* NWORK Output buffer size. Set this size according to your compiler-
* proper. Length of string literal should be less than NWORK
* - 1.
* Nevertheless, when COMPILER == GNUC || COMPILER == MSC, mcpp
* uses NMACWORK as output buffer size because GNUC and Visual C
* can accept very long line.
* NBUFF Input buffer size after line concatenation by <backslash>
* <newline>.
* NMACWORK Internal work buffer size for macro definition and expansion.
* IDMAX The longest identifier length.
* NMACPARS The maximum number of #define parameters.
* NOTE: Must be NMACPARS <= UCHARMAX.
* NEXP The maximum nesting depth of #if expressions.
* BLK_NEST The number of nested #if's permitted.
* INCLUDE_NEST The maximum nesting depth of #include. This is needed to
* prevent infinite recursive inclusion.
* RESCAN_LIMIT The maximum rescan times of macro expansion in STD or POST_STD
* modes.
* PRESTD_RESCAN_LIMIT The maximum rescan times of macro expansion in KR or
* OLD_PREP modes..
*
* NBUFF should not be smaller than NWORK.
* NMACWORK should not be smaller than NWORK * 2.
*
* SBSIZE defines the number of hash-table slots for the macro symbol table.
* It must be a power of 2.
*
* MKDEP_INIT The initial maximum number of filenames in a dependency line
* of output of -M* option. The maximum number is dynamically
* enlarged in execution.
*/
#ifndef IDMAX
#define IDMAX 0x400
#endif
#ifndef NMACPARS
#define NMACPARS 0xFF
#endif
#ifndef NEXP
#define NEXP 0x100
#endif
#ifndef BLK_NEST
#define BLK_NEST 0x100
#endif
#ifndef INCLUDE_NEST
#define INCLUDE_NEST 0x100
#endif
#ifndef RESCAN_LIMIT
#define RESCAN_LIMIT 0x40
#endif
#ifndef PRESTD_RESCAN_LIMIT
#define PRESTD_RESCAN_LIMIT 0x100
#endif
#ifndef NBUFF
#define NBUFF 0x10000 /* Must be NWORK <= NBUFF */
#endif
#ifndef NWORK
#define NWORK NBUFF /* 0x1000, 0x4000, 0x10000, .. */
#endif
#ifndef NMACWORK
#define NMACWORK (NWORK * 4) /* Must be NWORK * 2 <= NMACWORK */
#endif
#ifndef SBSIZE
#define SBSIZE 0x400
#endif
#ifndef MKDEP_INIT
#define MKDEP_INIT 0x100
#endif
#if UCHARMAX < NMACPARS
#error "NMACPARS should not be greater than UCHARMAX"
#endif
#if NBUFF < NWORK
#error "NBUFF must be same or greater than NWORK"
#endif
#if NMACWORK < NWORK * 2
#error "NMACWORK must be same or greater than NWORK * 2"
#endif
#define SBMASK (SBSIZE - 1)
#if (SBSIZE ^ SBMASK) != ((SBSIZE * 2) - 1)
#error "SBSIZE must be a power of 2 !"
#endif
/*
* Translation limits required by the Standard.
*
* *90MIN limits specified by C90.
* *99MIN limits specified by C99.
* *_CPLUS_MIN limits recommended by C++ (ISO 1998/07 Standard).
*
* SLEN*MIN Characters in a logical source line
* and characters in a string literal or wide string literal
* (after concatenation).
* IDLEN*MIN Significant initial characters in an internal identifier
* or a macro name.
* NMACPARS*MIN Parameters in one macro definition.
* Arguments in one macro invocation.
* EXP_NEST*MIN Nesting levels of parenthesized expressions in a full
* expression.
* BLK_NEST*MIN Nesting levels of conditional inclusion.
* INCLUDE_NEST*MIN Nesting levels for #include files.
* NMACRO*MIN Macro identifiers simultaneously defined in one translation
* unit.
*/
#define SLEN90MIN 0x1FD
#define IDLEN90MIN 0x1F
#define NMACPARS90MIN 0x1F
#define EXP_NEST90MIN 0x20
#define BLK_NEST90MIN 8
#define INCLUDE_NEST90MIN 8
#define NMACRO90MIN 0x400
#define SLEN99MIN 0xFFF
#define IDLEN99MIN 0x3F
#define NMACPARS99MIN 0x7F
#define EXP_NEST99MIN 0x3F
#define BLK_NEST99MIN 0x3F
#define INCLUDE_NEST99MIN 0xF
#define NMACRO99MIN 0xFFF
#define SLEN_CPLUS_MIN 0x10000
#define IDLEN_CPLUS_MIN 0x400
#define NMACPARS_CPLUS_MIN 0x100
#define EXP_NEST_CPLUS_MIN 0x100
#define BLK_NEST_CPLUS_MIN 0x100
#define INCLUDE_NEST_CPLUS_MIN 0x100
#define NMACRO_CPLUS_MIN 0x10000
/* LINE99LIMIT means the line number limit of C99 */
#define LINE99LIMIT 0x7FFFFFFF
/*
* STDC This macro is used for the predefined __STDC__.
* STDC_VERSION is used for the value of __STDC_VERSION__.
* STDC_HOSTED is used for the value of __STDC_HOSTED__.
*/
#if IDMAX < IDLEN90MIN || NBUFF < SLEN90MIN + 3
|| NWORK < SLEN90MIN + 2 || NMACPARS < NMACPARS90MIN
|| NEXP < EXP_NEST90MIN || BLK_NEST < BLK_NEST90MIN
#define STDC 0
#endif
#ifndef STDC
#define STDC 1 /* 1 : for ISO 9899:1990 or later */
#endif
#ifndef STDC_VERSION
#define STDC_VERSION 0L /* 199409L : For conforming
implementation to ISO 9899:1990 / Amendment 1:1995
199901L : For C99 */
#endif
#ifndef STDC_HOSTED
#define STDC_HOSTED 1 /* 1 : for hosted implementation,
0 : for free-standing implementation (C99 specification) */
#endif
/*
* CPLUS specifies the default value of the pre-defined macro __cplusplus
* for C++ processing.
* The value can be changed by -V<n> option.
*/
#define CPLUS 1 /* 199711L for C++ Standard */