715 lines
18 KiB
C++
715 lines
18 KiB
C++
/* The common simulator framework for GDB, the GNU Debugger.
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Copyright 2002-2017 Free Software Foundation, Inc.
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Contributed by Andrew Cagney and Red Hat.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef SIM_INLINE_H
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#define SIM_INLINE_H
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/* INLINE CODE SELECTION:
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GCC -O3 attempts to inline any function or procedure in scope. The
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options below facilitate finer grained control over what is and
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what is not inlined. In particular, it allows the selection of
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modules for inlining. Doing this allows the compiler to both
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eliminate the overhead of function calls and (as a consequence)
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also eliminate further dead code.
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On a CISC (x86) I've found that I can achieve an order of magnitude
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speed improvement (x3-x5). In the case of RISC (sparc) while the
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performance gain isn't as great it is still significant.
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Each module is controled by the macro <module>_INLINE which can
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have the values described below
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0 (ZERO)
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Do not inline any thing for the given module
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The following bit fields values can be combined:
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H_REVEALS_MODULE:
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C_REVEALS_MODULE:
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Include the C file for the module into the file being
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compiled. The actual inlining is controlled separatly.
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While of no apparent benefit, this makes it possible for the
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included module, when compiled, to inline its calls to what
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would otherwize be external functions.
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{C_,H_} Determines where the module is inlined. A
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H_REVEALS_MODULE will be included everywhere.
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INLINE_GLOBALS:
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Make external functions within the module `inline'. Thus if
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the module is included into a file being compiled, calls to
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the included modules funtions can be eliminated. INLINE_MODULE
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implies REVEAL_MODULE.
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INLINE_LOCALS:
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Make internal (static) functions within the module `inline'.
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CODING STYLE:
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The inline ability is enabled by specifying every data and function
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declaration and definition using one of the following methods:
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GLOBAL INLINE FUNCTIONS:
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Such functions are small and used heavily. Inlining them
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will eliminate an unnecessary function call overhead.
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.h: INLINE_OURPKG (void) ourpkg_func
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(int x,
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int y);
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.c: INLINE_OURPKG (void)
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ourpkg_func (int x,
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int y)
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{
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...
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}
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GLOBAL INLINE VARIABLES:
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This doesn't make much sense.
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GLOBAL NON-INLINE (EXTERN) FUNCTIONS AND VARIABLES:
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These include functions with varargs parameters. It can
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also include large rarely used functions that contribute
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little when inlined.
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.h: extern int ourpkg_print
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(char *fmt, ...);
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extern int a_global_variable;
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.c: #if EXTERN_OURPKG_P
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int
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ourpkg_print (char *fmt,
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...)
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{
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...
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}
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#endif
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#if EXTERN_OURPKG_P
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int a_global_variable = 1;
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#endif
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LOCAL (STATIC) FUNCTIONS:
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These can either be marked inline or just static static vis:
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.h: STATIC_INLINE_OURPKG (int) ourpkg_staticf (void);
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.c: STATIC_INLINE_OURPKG (int)
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ourpkg_staticf (void)
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{
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..
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}
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.h: STATIC_OURPKG (int) ourpkg_staticf (void);
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.c: STATIC_OURPKG (int)
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ourpkg_staticf (void)
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{
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..
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}
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All .h files:
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All modules must wrap their .h code in the following:
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#ifndef OURPKG_H
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#define OURPKG_H
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... code proper ...
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#endif
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In addition, modules that want to allow global inlining must
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include the lines (below) at the end of the .h file. (FIXME:
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Shouldn't be needed).
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#if H_REVEALS_MODULE_P (OURPKG_INLINE)
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#include "ourpkg.c"
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#endif
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All .c files:
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All modules must wrap their .c code in the following
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#ifndef OURPKG_C
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#define OURPKG_C
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... code proper ...
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#endif
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NOW IT WORKS:
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0:
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Since no inlining is defined. All macro's get standard defaults
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(extern, static, ...).
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H_REVEALS_MODULE (alt includes our):
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altprog.c defines ALTPROG_C and then includes sim-inline.h.
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In sim-inline.h the expression `` H_REVEALS_MODULE_P
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(OURPROG_INLINE) && ! defined (OURPROG_C) && REVEAL_MODULE_P
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(OURPROG_INLINE) '' is TRUE so it defines *_OURPROG as static
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and EXTERN_OURPROG_P as FALSE.
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altprog.c includes ourprog.h.
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In ourprog.h the expression ``H_REVEALS_MODULE_P
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(OURPROG_INLINE)'' is TRUE so it includes ourprog.c.
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Consequently, all the code in ourprog.c is visible and static in
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the file altprog.c
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H_REVEALS_MODULE (our includes our):
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ourprog.c defines OURPROG_C and then includes sim-inline.h.
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In sim-inline.h the term `` ! defined (OURPROG_C) '' is FALSE so
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it defines *_OURPROG as non-static and EXTERN_OURPROG_P as TRUE.
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ourprog.c includes ourprog.h.
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In ourprog.h the expression ``H_REVEALS_MODULE_P
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(OURPROG_INLINE)'' is true so it includes ourprog.c.
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In ourprog.c (second include) the expression defined (OURPROG_C)
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and so the body is not re-included.
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Consequently, ourprog.o will contain a non-static copy of all
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the exported symbols.
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C_REVEALS_MODULE (alt includes our):
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altprog.c defines ALTPROG_C and then includes sim-inline.c
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sim-inline.c defines C_INLINE_C and then includes sim-inline.h
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In sim-inline.h the expression `` defined (SIM_INLINE) && !
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defined (OURPROG_C) && REVEAL_MODULE_P (OURPROG_INLINE) '' is
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true so it defines *_OURPROG as static and EXTERN_OURPROG_P as
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FALSE.
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In sim-inline.c the expression ``C_REVEALS_MODULE_P
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(OURPROG_INLINE)'' is true so it includes ourprog.c.
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Consequently, all the code in ourprog.c is visible and static in
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the file altprog.c.
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C_REVEALS_MODULE (our includes our):
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ourprog.c defines OURPROG_C and then includes sim-inline.c
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sim-inline.c defines C_INLINE_C and then includes sim-inline.h
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In sim-inline.h the term `` ! defined (OURPROG_C) '' is FALSE
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so it defines *_OURPROG as non-static and EXTERN_OURPROG_P as
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TRUE.
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Consequently, ourprog.o will contain a non-static copy of all
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the exported symbols.
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REALITY CHECK:
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This is not for the faint hearted. I've seen GCC get up to 500mb
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trying to compile what this can create. */
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#define H_REVEALS_MODULE 1
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#define C_REVEALS_MODULE 2
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#define INLINE_GLOBALS 4
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#define INLINE_LOCALS 8
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#define ALL_H_INLINE (H_REVEALS_MODULE | INLINE_GLOBALS | INLINE_LOCALS)
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#define ALL_C_INLINE (C_REVEALS_MODULE | INLINE_GLOBALS | INLINE_LOCALS)
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/* Default macro to simplify control several of key the inlines */
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#ifndef DEFAULT_INLINE
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#define DEFAULT_INLINE INLINE_LOCALS
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#endif
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#define REVEAL_MODULE_P(X) (X & (H_REVEALS_MODULE | C_REVEALS_MODULE))
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#define H_REVEALS_MODULE_P(X) ((X & H_REVEALS_MODULE))
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#define C_REVEALS_MODULE_P(X) ((X & C_REVEALS_MODULE))
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#ifndef HAVE_INLINE
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#ifdef __GNUC__
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#define HAVE_INLINE
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#endif
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#endif
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/* Your compilers inline prefix */
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#ifndef INLINE
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#if defined (__GNUC__) && defined (__OPTIMIZE__)
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#define INLINE __inline__
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#else
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#define INLINE /*inline*/
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#endif
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#endif
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/* ??? Temporary, pending decision to always use extern inline and do a vast
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cleanup of inline support. */
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#ifndef INLINE2
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#if defined (__GNUC_GNU_INLINE__) || defined (__GNUC_STDC_INLINE__)
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#define INLINE2 __inline__ __attribute__ ((__gnu_inline__))
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#elif defined (__GNUC__)
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#define INLINE2 __inline__
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#else
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#define INLINE2 /*inline*/
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#endif
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#endif
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/* Your compiler's static inline prefix */
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#ifndef STATIC_INLINE
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#define STATIC_INLINE static INLINE
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#endif
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/* Your compiler's extern inline prefix */
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#ifndef EXTERN_INLINE
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#define EXTERN_INLINE extern INLINE2
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#endif
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/* Your compiler's no-return reserved word */
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#ifndef NORETURN
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#define NORETURN
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#endif
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/* Your compilers's unused reserved word */
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#if !defined (UNUSED)
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#if (!defined (__GNUC__) \
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|| (__GNUC__ < 2) \
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|| (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
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#define UNUSED
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#else
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#define UNUSED __attribute__((__unused__))
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#endif
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#endif
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/* *****
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sim-bits and sim-endian are treated differently from the rest
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of the modules below. Their default value is ALL_H_INLINE.
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The rest are ALL_C_INLINE. Don't blink, you'll miss it!
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*****
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*/
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/* sim-bits */
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#if !defined (SIM_BITS_INLINE) && (DEFAULT_INLINE)
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# define SIM_BITS_INLINE (ALL_H_INLINE)
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#endif
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#if ((H_REVEALS_MODULE_P (SIM_BITS_INLINE) || defined (SIM_INLINE_C)) \
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&& !defined (SIM_BITS_C) \
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&& (REVEAL_MODULE_P (SIM_BITS_INLINE)))
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# if (SIM_BITS_INLINE & INLINE_GLOBALS)
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# define INLINE_SIM_BITS(TYPE) static INLINE TYPE UNUSED
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# define EXTERN_SIM_BITS_P 0
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# else
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# define INLINE_SIM_BITS(TYPE) static TYPE UNUSED
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# define EXTERN_SIM_BITS_P 0
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# endif
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#else
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# define INLINE_SIM_BITS(TYPE) TYPE
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# define EXTERN_SIM_BITS_P 1
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#endif
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#if (SIM_BITS_INLINE & INLINE_LOCALS)
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# define STATIC_INLINE_SIM_BITS(TYPE) static INLINE TYPE
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#else
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# define STATIC_INLINE_SIM_BITS(TYPE) static TYPE
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#endif
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#define STATIC_SIM_BITS(TYPE) static TYPE
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/* sim-core */
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#if !defined (SIM_CORE_INLINE) && (DEFAULT_INLINE)
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# define SIM_CORE_INLINE ALL_C_INLINE
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#endif
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#if ((H_REVEALS_MODULE_P (SIM_CORE_INLINE) || defined (SIM_INLINE_C)) \
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&& !defined (SIM_CORE_C) \
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&& (REVEAL_MODULE_P (SIM_CORE_INLINE)))
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# if (SIM_CORE_INLINE & INLINE_GLOBALS)
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# define INLINE_SIM_CORE(TYPE) static INLINE TYPE UNUSED
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# define EXTERN_SIM_CORE_P 0
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#else
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# define INLINE_SIM_CORE(TYPE) static TYPE UNUSED
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# define EXTERN_SIM_CORE_P 0
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#endif
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#else
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# define INLINE_SIM_CORE(TYPE) TYPE
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# define EXTERN_SIM_CORE_P 1
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#endif
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#if (SIM_CORE_INLINE & INLINE_LOCALS)
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# define STATIC_INLINE_SIM_CORE(TYPE) static INLINE TYPE
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#else
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# define STATIC_INLINE_SIM_CORE(TYPE) static TYPE
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#endif
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#define STATIC_SIM_CORE(TYPE) static TYPE
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/* sim-endian */
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#if !defined (SIM_ENDIAN_INLINE) && (DEFAULT_INLINE)
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# define SIM_ENDIAN_INLINE ALL_H_INLINE
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#endif
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#if ((H_REVEALS_MODULE_P (SIM_ENDIAN_INLINE) || defined (SIM_INLINE_C)) \
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&& !defined (SIM_ENDIAN_C) \
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&& (REVEAL_MODULE_P (SIM_ENDIAN_INLINE)))
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# if (SIM_ENDIAN_INLINE & INLINE_GLOBALS)
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# define INLINE_SIM_ENDIAN(TYPE) static INLINE TYPE UNUSED
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# define EXTERN_SIM_ENDIAN_P 0
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# else
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# define INLINE_SIM_ENDIAN(TYPE) static TYPE UNUSED
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# define EXTERN_SIM_ENDIAN_P 0
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# endif
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#else
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# define INLINE_SIM_ENDIAN(TYPE) TYPE
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# define EXTERN_SIM_ENDIAN_P 1
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#endif
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#if (SIM_ENDIAN_INLINE & INLINE_LOCALS)
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# define STATIC_INLINE_SIM_ENDIAN(TYPE) static INLINE TYPE
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#else
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# define STATIC_INLINE_SIM_ENDIAN(TYPE) static TYPE
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#endif
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#define STATIC_SIM_ENDIAN(TYPE) static TYPE
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/* sim-events */
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#if !defined (SIM_EVENTS_INLINE) && (DEFAULT_INLINE)
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# define SIM_EVENTS_INLINE ALL_C_INLINE
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#endif
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#if ((H_REVEALS_MODULE_P (SIM_EVENTS_INLINE) || defined (SIM_INLINE_C)) \
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&& !defined (SIM_EVENTS_C) \
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&& (REVEAL_MODULE_P (SIM_EVENTS_INLINE)))
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# if (SIM_EVENTS_INLINE & INLINE_GLOBALS)
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# define INLINE_SIM_EVENTS(TYPE) static INLINE TYPE UNUSED
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# define EXTERN_SIM_EVENTS_P 0
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# else
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# define INLINE_SIM_EVENTS(TYPE) static TYPE UNUSED
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# define EXTERN_SIM_EVENTS_P 0
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# endif
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#else
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# define INLINE_SIM_EVENTS(TYPE) TYPE
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# define EXTERN_SIM_EVENTS_P 1
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#endif
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#if (SIM_EVENTS_INLINE & INLINE_LOCALS)
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# define STATIC_INLINE_SIM_EVENTS(TYPE) static INLINE TYPE
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#else
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# define STATIC_INLINE_SIM_EVENTS(TYPE) static TYPE
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#endif
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#define STATIC_SIM_EVENTS(TYPE) static TYPE
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/* sim-fpu */
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#if !defined (SIM_FPU_INLINE) && (DEFAULT_INLINE)
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# define SIM_FPU_INLINE ALL_C_INLINE
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#endif
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#if ((H_REVEALS_MODULE_P (SIM_FPU_INLINE) || defined (SIM_INLINE_C)) \
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&& !defined (SIM_FPU_C) \
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&& (REVEAL_MODULE_P (SIM_FPU_INLINE)))
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# if (SIM_FPU_INLINE & INLINE_GLOBALS)
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# define INLINE_SIM_FPU(TYPE) static INLINE TYPE UNUSED
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# define EXTERN_SIM_FPU_P 0
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# else
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# define INLINE_SIM_FPU(TYPE) static TYPE UNUSED
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# define EXTERN_SIM_FPU_P 0
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# endif
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#else
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# define INLINE_SIM_FPU(TYPE) TYPE
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# define EXTERN_SIM_FPU_P 1
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#endif
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#if (SIM_FPU_INLINE & INLINE_LOCALS)
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# define STATIC_INLINE_SIM_FPU(TYPE) static INLINE TYPE
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#else
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# define STATIC_INLINE_SIM_FPU(TYPE) static TYPE
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#endif
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#define STATIC_SIM_FPU(TYPE) static TYPE
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/* sim-types */
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#if ((H_REVEALS_MODULE_P (SIM_TYPES_INLINE) || defined (SIM_INLINE_C)) \
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&& !defined (SIM_TYPES_C) \
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&& (REVEAL_MODULE_P (SIM_TYPES_INLINE)))
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# if (SIM_TYPES_INLINE & INLINE_GLOBALS)
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# define INLINE_SIM_TYPES(TYPE) static INLINE TYPE UNUSED
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# define EXTERN_SIM_TYPES_P 0
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# else
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# define INLINE_SIM_TYPES(TYPE) static TYPE UNUSED
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# define EXTERN_SIM_TYPES_P 0
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# endif
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#else
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# define INLINE_SIM_TYPES(TYPE) TYPE
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# define EXTERN_SIM_TYPES_P 1
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#endif
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#if (SIM_TYPES_INLINE & INLINE_LOCALS)
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# define STATIC_INLINE_SIM_TYPES(TYPE) static INLINE TYPE
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#else
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# define STATIC_INLINE_SIM_TYPES(TYPE) static TYPE
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#endif
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#define STATIC_SIM_TYPES(TYPE) static TYPE
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/* sim_main */
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#if !defined (SIM_MAIN_INLINE) && (DEFAULT_INLINE)
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# define SIM_MAIN_INLINE (ALL_C_INLINE)
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#endif
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#if ((H_REVEALS_MODULE_P (SIM_MAIN_INLINE) || defined (SIM_INLINE_C)) \
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&& !defined (SIM_MAIN_C) \
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&& (REVEAL_MODULE_P (SIM_MAIN_INLINE)))
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# if (SIM_MAIN_INLINE & INLINE_GLOBALS)
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# define INLINE_SIM_MAIN(TYPE) static INLINE TYPE UNUSED
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# define EXTERN_SIM_MAIN_P 0
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# else
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# define INLINE_SIM_MAIN(TYPE) static TYPE UNUSED
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# define EXTERN_SIM_MAIN_P 0
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# endif
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#else
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# define INLINE_SIM_MAIN(TYPE) TYPE
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# define EXTERN_SIM_MAIN_P 1
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#endif
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||
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||
#if (SIM_MAIN_INLINE & INLINE_LOCALS)
|
||
# define STATIC_INLINE_SIM_MAIN(TYPE) static INLINE TYPE
|
||
#else
|
||
# define STATIC_INLINE_SIM_MAIN(TYPE) static TYPE
|
||
#endif
|
||
|
||
#define STATIC_SIM_MAIN(TYPE) static TYPE
|
||
|
||
/* engine */
|
||
|
||
#if ((H_REVEALS_MODULE_P (ENGINE_INLINE) || defined (SIM_INLINE_C)) \
|
||
&& !defined (ENGINE_C) \
|
||
&& (REVEAL_MODULE_P (ENGINE_INLINE)))
|
||
# if (ENGINE_INLINE & INLINE_GLOBALS)
|
||
# define INLINE_ENGINE(TYPE) static INLINE TYPE UNUSED
|
||
# define EXTERN_ENGINE_P 0
|
||
# else
|
||
# define INLINE_ENGINE(TYPE) static TYPE UNUSED
|
||
# define EXTERN_ENGINE_P 0
|
||
# endif
|
||
#else
|
||
# define INLINE_ENGINE(TYPE) TYPE
|
||
# define EXTERN_ENGINE_P 1
|
||
#endif
|
||
|
||
#if (ENGINE_INLINE & INLINE_LOCALS)
|
||
# define STATIC_INLINE_ENGINE(TYPE) static INLINE TYPE
|
||
#else
|
||
# define STATIC_INLINE_ENGINE(TYPE) static TYPE
|
||
#endif
|
||
|
||
#define STATIC_ENGINE(TYPE) static TYPE
|
||
|
||
|
||
|
||
/* icache */
|
||
|
||
#if ((H_REVEALS_MODULE_P (ICACHE_INLINE) || defined (SIM_INLINE_C)) \
|
||
&& !defined (ICACHE_C) \
|
||
&& (REVEAL_MODULE_P (ICACHE_INLINE)))
|
||
# if (ICACHE_INLINE & INLINE_GLOBALS)
|
||
# define INLINE_ICACHE(TYPE) static INLINE TYPE UNUSED
|
||
# define EXTERN_ICACHE_P 0
|
||
#else
|
||
# define INLINE_ICACHE(TYPE) static TYPE UNUSED
|
||
# define EXTERN_ICACHE_P 0
|
||
#endif
|
||
#else
|
||
# define INLINE_ICACHE(TYPE) TYPE
|
||
# define EXTERN_ICACHE_P 1
|
||
#endif
|
||
|
||
#if (ICACHE_INLINE & INLINE_LOCALS)
|
||
# define STATIC_INLINE_ICACHE(TYPE) static INLINE TYPE
|
||
#else
|
||
# define STATIC_INLINE_ICACHE(TYPE) static TYPE
|
||
#endif
|
||
|
||
#define STATIC_ICACHE(TYPE) static TYPE
|
||
|
||
|
||
|
||
/* idecode */
|
||
|
||
#if ((H_REVEALS_MODULE_P (IDECODE_INLINE) || defined (SIM_INLINE_C)) \
|
||
&& !defined (IDECODE_C) \
|
||
&& (REVEAL_MODULE_P (IDECODE_INLINE)))
|
||
# if (IDECODE_INLINE & INLINE_GLOBALS)
|
||
# define INLINE_IDECODE(TYPE) static INLINE TYPE UNUSED
|
||
# define EXTERN_IDECODE_P 0
|
||
#else
|
||
# define INLINE_IDECODE(TYPE) static TYPE UNUSED
|
||
# define EXTERN_IDECODE_P 0
|
||
#endif
|
||
#else
|
||
# define INLINE_IDECODE(TYPE) TYPE
|
||
# define EXTERN_IDECODE_P 1
|
||
#endif
|
||
|
||
#if (IDECODE_INLINE & INLINE_LOCALS)
|
||
# define STATIC_INLINE_IDECODE(TYPE) static INLINE TYPE
|
||
#else
|
||
# define STATIC_INLINE_IDECODE(TYPE) static TYPE
|
||
#endif
|
||
|
||
#define STATIC_IDECODE(TYPE) static TYPE
|
||
|
||
|
||
|
||
/* semantics */
|
||
|
||
#if ((H_REVEALS_MODULE_P (SEMANTICS_INLINE) || defined (SIM_INLINE_C)) \
|
||
&& !defined (SEMANTICS_C) \
|
||
&& (REVEAL_MODULE_P (SEMANTICS_INLINE)))
|
||
# if (SEMANTICS_INLINE & INLINE_GLOBALS)
|
||
# define INLINE_SEMANTICS(TYPE) static INLINE TYPE UNUSED
|
||
# define EXTERN_SEMANTICS_P 0
|
||
#else
|
||
# define INLINE_SEMANTICS(TYPE) static TYPE UNUSED
|
||
# define EXTERN_SEMANTICS_P 0
|
||
#endif
|
||
#else
|
||
# define INLINE_SEMANTICS(TYPE) TYPE
|
||
# define EXTERN_SEMANTICS_P 1
|
||
#endif
|
||
|
||
#if EXTERN_SEMANTICS_P
|
||
# define EXTERN_SEMANTICS(TYPE) TYPE
|
||
#else
|
||
# define EXTERN_SEMANTICS(TYPE) static TYPE UNUSED
|
||
#endif
|
||
|
||
#if (SEMANTICS_INLINE & INLINE_LOCALS)
|
||
# define STATIC_INLINE_SEMANTICS(TYPE) static INLINE TYPE
|
||
#else
|
||
# define STATIC_INLINE_SEMANTICS(TYPE) static TYPE
|
||
#endif
|
||
|
||
#define STATIC_SEMANTICS(TYPE) static TYPE
|
||
|
||
|
||
|
||
/* support */
|
||
|
||
#if !defined (SUPPORT_INLINE) && (DEFAULT_INLINE)
|
||
# define SUPPORT_INLINE ALL_C_INLINE
|
||
#endif
|
||
|
||
#if ((H_REVEALS_MODULE_P (SUPPORT_INLINE) || defined (SIM_INLINE_C)) \
|
||
&& !defined (SUPPORT_C) \
|
||
&& (REVEAL_MODULE_P (SUPPORT_INLINE)))
|
||
# if (SUPPORT_INLINE & INLINE_GLOBALS)
|
||
# define INLINE_SUPPORT(TYPE) static INLINE TYPE UNUSED
|
||
# define EXTERN_SUPPORT_P 0
|
||
#else
|
||
# define INLINE_SUPPORT(TYPE) static TYPE UNUSED
|
||
# define EXTERN_SUPPORT_P 0
|
||
#endif
|
||
#else
|
||
# define INLINE_SUPPORT(TYPE) TYPE
|
||
# define EXTERN_SUPPORT_P 1
|
||
#endif
|
||
|
||
#if (SUPPORT_INLINE & INLINE_LOCALS)
|
||
# define STATIC_INLINE_SUPPORT(TYPE) static INLINE TYPE
|
||
#else
|
||
# define STATIC_INLINE_SUPPORT(TYPE) static TYPE
|
||
#endif
|
||
|
||
#define STATIC_SUPPORT(TYPE) static TYPE
|
||
|
||
|
||
|
||
#endif
|