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|
/* The common simulator framework for GDB, the GNU Debugger.
Copyright 2002-2024 Free Software Foundation, Inc.
Contributed by Andrew Cagney and Red Hat.
This file is part of GDB.
This program 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 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef SIM_INLINE_H
#define SIM_INLINE_H
#include "ansidecl.h"
/* INLINE CODE SELECTION:
GCC -O3 attempts to inline any function or procedure in scope. The
options below facilitate finer grained control over what is and
what is not inlined. In particular, it allows the selection of
modules for inlining. Doing this allows the compiler to both
eliminate the overhead of function calls and (as a consequence)
also eliminate further dead code.
On a CISC (x86) I've found that I can achieve an order of magnitude
speed improvement (x3-x5). In the case of RISC (sparc) while the
performance gain isn't as great it is still significant.
Each module is controlled by the macro <module>_INLINE which can
have the values described below
0 (ZERO)
Do not inline any thing for the given module
The following bit fields values can be combined:
H_REVEALS_MODULE:
C_REVEALS_MODULE:
Include the C file for the module into the file being
compiled. The actual inlining is controlled separatly.
While of no apparent benefit, this makes it possible for the
included module, when compiled, to inline its calls to what
would otherwize be external functions.
{C_,H_} Determines where the module is inlined. A
H_REVEALS_MODULE will be included everywhere.
INLINE_GLOBALS:
Make external functions within the module `inline'. Thus if
the module is included into a file being compiled, calls to
the included modules funtions can be eliminated. INLINE_MODULE
implies REVEAL_MODULE.
INLINE_LOCALS:
Make internal (static) functions within the module `inline'.
CODING STYLE:
The inline ability is enabled by specifying every data and function
declaration and definition using one of the following methods:
GLOBAL INLINE FUNCTIONS:
Such functions are small and used heavily. Inlining them
will eliminate an unnecessary function call overhead.
.h: INLINE_OURPKG (void) ourpkg_func
(int x,
int y);
.c: INLINE_OURPKG (void)
ourpkg_func (int x,
int y)
{
...
}
GLOBAL INLINE VARIABLES:
This doesn't make much sense.
GLOBAL NON-INLINE (EXTERN) FUNCTIONS AND VARIABLES:
These include functions with varargs parameters. It can
also include large rarely used functions that contribute
little when inlined.
.h: extern int ourpkg_print
(char *fmt, ...);
extern int a_global_variable;
.c: #if EXTERN_OURPKG_P
int
ourpkg_print (char *fmt,
...)
{
...
}
#endif
#if EXTERN_OURPKG_P
int a_global_variable = 1;
#endif
LOCAL (STATIC) FUNCTIONS:
These can either be marked inline or just static static vis:
.h: STATIC_INLINE_OURPKG (int) ourpkg_staticf (void);
.c: STATIC_INLINE_OURPKG (int)
ourpkg_staticf (void)
{
..
}
.h: STATIC_OURPKG (int) ourpkg_staticf (void);
.c: STATIC_OURPKG (int)
ourpkg_staticf (void)
{
..
}
All .h files:
All modules must wrap their .h code in the following:
#ifndef OURPKG_H
#define OURPKG_H
... code proper ...
#endif
In addition, modules that want to allow global inlining must
include the lines (below) at the end of the .h file. (FIXME:
Shouldn't be needed).
#if H_REVEALS_MODULE_P (OURPKG_INLINE)
#include "ourpkg.c"
#endif
All .c files:
All modules must wrap their .c code in the following
#ifndef OURPKG_C
#define OURPKG_C
... code proper ...
#endif
NOW IT WORKS:
0:
Since no inlining is defined. All macro's get standard defaults
(extern, static, ...).
H_REVEALS_MODULE (alt includes our):
altprog.c defines ALTPROG_C and then includes sim-inline.h.
In sim-inline.h the expression `` H_REVEALS_MODULE_P
(OURPROG_INLINE) && ! defined (OURPROG_C) && REVEAL_MODULE_P
(OURPROG_INLINE) '' is TRUE so it defines *_OURPROG as static
and EXTERN_OURPROG_P as FALSE.
altprog.c includes ourprog.h.
In ourprog.h the expression ``H_REVEALS_MODULE_P
(OURPROG_INLINE)'' is TRUE so it includes ourprog.c.
Consequently, all the code in ourprog.c is visible and static in
the file altprog.c
H_REVEALS_MODULE (our includes our):
ourprog.c defines OURPROG_C and then includes sim-inline.h.
In sim-inline.h the term `` ! defined (OURPROG_C) '' is FALSE so
it defines *_OURPROG as non-static and EXTERN_OURPROG_P as TRUE.
ourprog.c includes ourprog.h.
In ourprog.h the expression ``H_REVEALS_MODULE_P
(OURPROG_INLINE)'' is true so it includes ourprog.c.
In ourprog.c (second include) the expression defined (OURPROG_C)
and so the body is not re-included.
Consequently, ourprog.o will contain a non-static copy of all
the exported symbols.
C_REVEALS_MODULE (alt includes our):
altprog.c defines ALTPROG_C and then includes sim-inline.c
sim-inline.c defines C_INLINE_C and then includes sim-inline.h
In sim-inline.h the expression `` defined (SIM_INLINE) && !
defined (OURPROG_C) && REVEAL_MODULE_P (OURPROG_INLINE) '' is
true so it defines *_OURPROG as static and EXTERN_OURPROG_P as
FALSE.
In sim-inline.c the expression ``C_REVEALS_MODULE_P
(OURPROG_INLINE)'' is true so it includes ourprog.c.
Consequently, all the code in ourprog.c is visible and static in
the file altprog.c.
C_REVEALS_MODULE (our includes our):
ourprog.c defines OURPROG_C and then includes sim-inline.c
sim-inline.c defines C_INLINE_C and then includes sim-inline.h
In sim-inline.h the term `` ! defined (OURPROG_C) '' is FALSE
so it defines *_OURPROG as non-static and EXTERN_OURPROG_P as
TRUE.
Consequently, ourprog.o will contain a non-static copy of all
the exported symbols.
REALITY CHECK:
This is not for the faint hearted. I've seen GCC get up to 500mb
trying to compile what this can create. */
#define H_REVEALS_MODULE 1
#define C_REVEALS_MODULE 2
#define INLINE_GLOBALS 4
#define INLINE_LOCALS 8
#define ALL_H_INLINE (H_REVEALS_MODULE | INLINE_GLOBALS | INLINE_LOCALS)
#define ALL_C_INLINE (C_REVEALS_MODULE | INLINE_GLOBALS | INLINE_LOCALS)
/* Default macro to simplify control several of key the inlines */
#ifndef DEFAULT_INLINE
#define DEFAULT_INLINE INLINE_LOCALS
#endif
#define REVEAL_MODULE_P(X) (X & (H_REVEALS_MODULE | C_REVEALS_MODULE))
#define H_REVEALS_MODULE_P(X) ((X & H_REVEALS_MODULE))
#define C_REVEALS_MODULE_P(X) ((X & C_REVEALS_MODULE))
#ifndef HAVE_INLINE
#ifdef __GNUC__
#define HAVE_INLINE
#endif
#endif
/* Your compilers inline prefix */
#ifndef INLINE
#if defined (__GNUC__) && defined (__OPTIMIZE__)
#define INLINE __inline__
#else
#define INLINE /*inline*/
#endif
#endif
/* ??? Temporary, pending decision to always use extern inline and do a vast
cleanup of inline support. */
#ifndef INLINE2
#if defined (__GNUC_GNU_INLINE__) || defined (__GNUC_STDC_INLINE__)
#define INLINE2 __inline__ __attribute__ ((__gnu_inline__))
#elif defined (__GNUC__)
#define INLINE2 __inline__
#else
#define INLINE2 /*inline*/
#endif
#endif
/* Your compiler's static inline prefix */
#ifndef STATIC_INLINE
#define STATIC_INLINE static INLINE
#endif
/* Your compiler's extern inline prefix */
#ifndef EXTERN_INLINE
#define EXTERN_INLINE extern INLINE2
#endif
/* Your compilers's unused reserved word */
#if !defined (UNUSED)
#define UNUSED ATTRIBUTE_UNUSED
#endif
/* sim_arange */
#if !defined (SIM_ARANGE_INLINE) && (DEFAULT_INLINE)
# define SIM_ARANGE_INLINE (ALL_H_INLINE)
#endif
#if ((H_REVEALS_MODULE_P (SIM_ARANGE_INLINE) || defined (SIM_INLINE_C)) \
&& !defined (SIM_ARANGE_C) \
&& (REVEAL_MODULE_P (SIM_ARANGE_INLINE)))
# if (SIM_ARANGE_INLINE & INLINE_GLOBALS)
# define INLINE_SIM_ARANGE(TYPE) static INLINE UNUSED TYPE
# define EXTERN_SIM_ARANGE_P 0
# else
# define INLINE_SIM_ARANGE(TYPE) static UNUSED TYPE
# define EXTERN_SIM_ARANGE_P 0
# endif
#else
# define INLINE_SIM_ARANGE(TYPE) TYPE
# define EXTERN_SIM_ARANGE_P 1
#endif
#if (SIM_ARANGE_INLINE & INLINE_LOCALS)
# define STATIC_INLINE_SIM_ARANGE(TYPE) static INLINE TYPE
#else
# define STATIC_INLINE_SIM_ARANGE(TYPE) static TYPE
#endif
#define STATIC_SIM_ARANGE(TYPE) static TYPE
/* *****
sim-bits and sim-endian are treated differently from the rest
of the modules below. Their default value is ALL_H_INLINE.
The rest are ALL_C_INLINE. Don't blink, you'll miss it!
*****
*/
/* sim-bits */
#if !defined (SIM_BITS_INLINE) && (DEFAULT_INLINE)
# define SIM_BITS_INLINE (ALL_H_INLINE)
#endif
#if ((H_REVEALS_MODULE_P (SIM_BITS_INLINE) || defined (SIM_INLINE_C)) \
&& !defined (SIM_BITS_C) \
&& (REVEAL_MODULE_P (SIM_BITS_INLINE)))
# if (SIM_BITS_INLINE & INLINE_GLOBALS)
# define INLINE_SIM_BITS(TYPE) static INLINE UNUSED TYPE
# define EXTERN_SIM_BITS_P 0
# else
# define INLINE_SIM_BITS(TYPE) static UNUSED TYPE
# define EXTERN_SIM_BITS_P 0
# endif
#else
# define INLINE_SIM_BITS(TYPE) TYPE
# define EXTERN_SIM_BITS_P 1
#endif
#if (SIM_BITS_INLINE & INLINE_LOCALS)
# define STATIC_INLINE_SIM_BITS(TYPE) static INLINE TYPE
#else
# define STATIC_INLINE_SIM_BITS(TYPE) static TYPE
#endif
#define STATIC_SIM_BITS(TYPE) static TYPE
/* sim-core */
#if !defined (SIM_CORE_INLINE) && (DEFAULT_INLINE)
# define SIM_CORE_INLINE ALL_C_INLINE
#endif
#if ((H_REVEALS_MODULE_P (SIM_CORE_INLINE) || defined (SIM_INLINE_C)) \
&& !defined (SIM_CORE_C) \
&& (REVEAL_MODULE_P (SIM_CORE_INLINE)))
# if (SIM_CORE_INLINE & INLINE_GLOBALS)
# define INLINE_SIM_CORE(TYPE) static INLINE UNUSED TYPE
# define EXTERN_SIM_CORE_P 0
#else
# define INLINE_SIM_CORE(TYPE) static UNUSED TYPE
# define EXTERN_SIM_CORE_P 0
#endif
#else
# define INLINE_SIM_CORE(TYPE) TYPE
# define EXTERN_SIM_CORE_P 1
#endif
#if (SIM_CORE_INLINE & INLINE_LOCALS)
# define STATIC_INLINE_SIM_CORE(TYPE) static INLINE TYPE
#else
# define STATIC_INLINE_SIM_CORE(TYPE) static TYPE
#endif
#define STATIC_SIM_CORE(TYPE) static TYPE
/* sim-endian */
#if !defined (SIM_ENDIAN_INLINE) && (DEFAULT_INLINE)
# define SIM_ENDIAN_INLINE ALL_H_INLINE
#endif
#if ((H_REVEALS_MODULE_P (SIM_ENDIAN_INLINE) || defined (SIM_INLINE_C)) \
&& !defined (SIM_ENDIAN_C) \
&& (REVEAL_MODULE_P (SIM_ENDIAN_INLINE)))
# if (SIM_ENDIAN_INLINE & INLINE_GLOBALS)
# define INLINE_SIM_ENDIAN(TYPE) static INLINE UNUSED TYPE
# define EXTERN_SIM_ENDIAN_P 0
# else
# define INLINE_SIM_ENDIAN(TYPE) static UNUSED TYPE
# define EXTERN_SIM_ENDIAN_P 0
# endif
#else
# define INLINE_SIM_ENDIAN(TYPE) TYPE
# define EXTERN_SIM_ENDIAN_P 1
#endif
#if (SIM_ENDIAN_INLINE & INLINE_LOCALS)
# define STATIC_INLINE_SIM_ENDIAN(TYPE) static INLINE TYPE
#else
# define STATIC_INLINE_SIM_ENDIAN(TYPE) static TYPE
#endif
#define STATIC_SIM_ENDIAN(TYPE) static TYPE
/* sim-events */
#if !defined (SIM_EVENTS_INLINE) && (DEFAULT_INLINE)
# define SIM_EVENTS_INLINE ALL_C_INLINE
#endif
#if ((H_REVEALS_MODULE_P (SIM_EVENTS_INLINE) || defined (SIM_INLINE_C)) \
&& !defined (SIM_EVENTS_C) \
&& (REVEAL_MODULE_P (SIM_EVENTS_INLINE)))
# if (SIM_EVENTS_INLINE & INLINE_GLOBALS)
# define INLINE_SIM_EVENTS(TYPE) static INLINE UNUSED TYPE
# define EXTERN_SIM_EVENTS_P 0
# else
# define INLINE_SIM_EVENTS(TYPE) static UNUSED TYPE
# define EXTERN_SIM_EVENTS_P 0
# endif
#else
# define INLINE_SIM_EVENTS(TYPE) TYPE
# define EXTERN_SIM_EVENTS_P 1
#endif
#if (SIM_EVENTS_INLINE & INLINE_LOCALS)
# define STATIC_INLINE_SIM_EVENTS(TYPE) static INLINE TYPE
#else
# define STATIC_INLINE_SIM_EVENTS(TYPE) static TYPE
#endif
#define STATIC_SIM_EVENTS(TYPE) static TYPE
/* sim-fpu */
#if !defined (SIM_FPU_INLINE) && (DEFAULT_INLINE)
# define SIM_FPU_INLINE ALL_C_INLINE
#endif
#if ((H_REVEALS_MODULE_P (SIM_FPU_INLINE) || defined (SIM_INLINE_C)) \
&& !defined (SIM_FPU_C) \
&& (REVEAL_MODULE_P (SIM_FPU_INLINE)))
# if (SIM_FPU_INLINE & INLINE_GLOBALS)
# define INLINE_SIM_FPU(TYPE) static INLINE UNUSED TYPE
# define EXTERN_SIM_FPU_P 0
# else
# define INLINE_SIM_FPU(TYPE) static UNUSED TYPE
# define EXTERN_SIM_FPU_P 0
# endif
#else
# define INLINE_SIM_FPU(TYPE) TYPE
# define EXTERN_SIM_FPU_P 1
#endif
#if (SIM_FPU_INLINE & INLINE_LOCALS)
# define STATIC_INLINE_SIM_FPU(TYPE) static INLINE TYPE
#else
# define STATIC_INLINE_SIM_FPU(TYPE) static TYPE
#endif
#define STATIC_SIM_FPU(TYPE) static TYPE
/* sim-types */
#if ((H_REVEALS_MODULE_P (SIM_TYPES_INLINE) || defined (SIM_INLINE_C)) \
&& !defined (SIM_TYPES_C) \
&& (REVEAL_MODULE_P (SIM_TYPES_INLINE)))
# if (SIM_TYPES_INLINE & INLINE_GLOBALS)
# define INLINE_SIM_TYPES(TYPE) static INLINE UNUSED TYPE
# define EXTERN_SIM_TYPES_P 0
# else
# define INLINE_SIM_TYPES(TYPE) static UNUSED TYPE
# define EXTERN_SIM_TYPES_P 0
# endif
#else
# define INLINE_SIM_TYPES(TYPE) TYPE
# define EXTERN_SIM_TYPES_P 1
#endif
#if (SIM_TYPES_INLINE & INLINE_LOCALS)
# define STATIC_INLINE_SIM_TYPES(TYPE) static INLINE TYPE
#else
# define STATIC_INLINE_SIM_TYPES(TYPE) static TYPE
#endif
#define STATIC_SIM_TYPES(TYPE) static TYPE
/* sim_main */
#if !defined (SIM_MAIN_INLINE) && (DEFAULT_INLINE)
# define SIM_MAIN_INLINE (ALL_C_INLINE)
#endif
#if ((H_REVEALS_MODULE_P (SIM_MAIN_INLINE) || defined (SIM_INLINE_C)) \
&& !defined (SIM_MAIN_C) \
&& (REVEAL_MODULE_P (SIM_MAIN_INLINE)))
# if (SIM_MAIN_INLINE & INLINE_GLOBALS)
# define INLINE_SIM_MAIN(TYPE) static INLINE UNUSED TYPE
# define EXTERN_SIM_MAIN_P 0
# else
# define INLINE_SIM_MAIN(TYPE) static UNUSED TYPE
# define EXTERN_SIM_MAIN_P 0
# endif
#else
# define INLINE_SIM_MAIN(TYPE) TYPE
# define EXTERN_SIM_MAIN_P 1
#endif
#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 UNUSED TYPE
# define EXTERN_ENGINE_P 0
# else
# define INLINE_ENGINE(TYPE) static UNUSED TYPE
# 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 UNUSED TYPE
# define EXTERN_ICACHE_P 0
#else
# define INLINE_ICACHE(TYPE) static UNUSED TYPE
# 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 UNUSED TYPE
# define EXTERN_IDECODE_P 0
#else
# define INLINE_IDECODE(TYPE) static UNUSED TYPE
# 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 UNUSED TYPE
# define EXTERN_SEMANTICS_P 0
#else
# define INLINE_SEMANTICS(TYPE) static UNUSED TYPE
# 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 UNUSED TYPE
#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 UNUSED TYPE
# define EXTERN_SUPPORT_P 0
#else
# define INLINE_SUPPORT(TYPE) static UNUSED TYPE
# 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
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