[PATCH] cell spu offloading printf and friends
Jeff Johnston
jjohnstn@redhat.com
Wed Dec 20 10:59:00 GMT 2006
Patch checked in.
-- Jeff J.
jschopp wrote:
> In the past I have sent out a series of patches that offloads various
> c99 stdio functions. The newlib stdio functions are simply too large
> for the cell spu. A simple hello world program will typically take in
> excess of 200K without this patch. Given the cell spu only has 256K in
> total it makes it totally impractical to add a printf to a program.
>
> This patch is meant to be small and straightforward in order to get a
> minimal amount of usefulness merged.
>
> Later today I will send a second patch, which is larger and implements
> the rest of the functions. If this first one isn't going to be
> accepted, please save me the trouble of getting the next one sent out,
> as it depends on this one.
>
> 2006-12-15 Joel Schopp <jschopp@austin.ibm.com>
>
> * spu/c99ppe.h: New file
> * spu/perror.c: New file
> * spu/printf.c: New file
> * spu/putchar.c: New file
> * spu/puts.c: New file
> * spu/vprintf.c: New file
> * spu/vsnprintf.c: New file
> * spu/vsprintf.c: New file
> * spu/Makefile.am: (printf.o putchar.o puts.o vprintf.o
> vsnprintf.o vsprintf.o): New targets.
> * spu/Makefile.in: (printf.o putchar.o puts.o vprintf.o
> vsnprintf.o vsprintf.o): New targets.
>
>
> ------------------------------------------------------------------------
>
> Index: src/newlib/libc/machine/spu/printf.c
> ===================================================================
> --- /dev/null
> +++ src/newlib/libc/machine/spu/printf.c
> @@ -0,0 +1,54 @@
> +
> +#include <_ansi.h>
> +#include <stdio.h>
> +
> +#include "c99ppe.h"
> +
> +#ifdef _HAVE_STDC
> +#include <stdarg.h>
> +#else
> +#include <varargs.h>
> +#endif
> +
> +typedef struct
> +{
> + char* fmt;
> + unsigned int pad0[ 3 ];
> + va_list ap;
> +} c99_printf_t;
> +
> +#ifndef _REENT_ONLY
> +
> +#ifdef _HAVE_STDC
> +int
> +_DEFUN (printf, (fmt,ap),
> + _CONST char *fmt _AND
> + ...)
> +#else
> +int
> +#error
> +printf (fmt, va_alist)
> + char *fmt;
> + va_dcl
> +#endif
> +{
> + int* ret;
> + c99_printf_t args;
> + ret = (int*) &args;
> +
> + args.fmt = fmt;
> +#ifdef _HAVE_STDC
> + va_start (args.ap, args.fmt);
> +#else
> + va_start (args.ap);
> +#endif
> +
> +
> + /* ret = vfprintf (_stdout_r (_REENT), fmt, ap);*/
> + send_to_ppe(SPE_C99_SIGNALCODE, SPE_C99_VPRINTF, &args);
> +
> + va_end (args.ap);
> + return *ret;
> +}
> +
> +#endif /* ! _REENT_ONLY */
> Index: src/newlib/libc/machine/spu/c99ppe.h
> ===================================================================
> --- /dev/null
> +++ src/newlib/libc/machine/spu/c99ppe.h
> @@ -0,0 +1,117 @@
> +/*
> +(C) Copyright IBM Corp. 2006
> +
> +All rights reserved.
> +
> +Redistribution and use in source and binary forms, with or without
> +modification, are permitted provided that the following conditions are met:
> +
> + * Redistributions of source code must retain the above copyright notice,
> +this list of conditions and the following disclaimer.
> + * 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.
> + * Neither the name of IBM nor the names of its contributors may be
> +used to endorse or promote products derived from this software without
> +specific prior written permission.
> +
> +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
> +
> +Author: Joel Schopp <jschopp@austin.ibm.com>
> +*/
> +
> +#include <errno.h>
> +#include <spu_intrinsics.h>
> +
> +#define SPE_C99_SIGNALCODE 0x2100
> +
> +#define SPE_C99_OP_SHIFT 24
> +#define SPE_C99_OP_MASK 0xff
> +#define SPE_C99_DATA_MASK 0xffffff
> +
> +enum {
> + SPE_C99_CLEARERR=0x01,
> + SPE_C99_FCLOSE,
> + SPE_C99_FEOF,
> + SPE_C99_FERROR,
> + SPE_C99_FFLUSH,
> + SPE_C99_FGETC,
> + SPE_C99_FGETPOS,
> + SPE_C99_FGETS,
> + SPE_C99_FILENO,
> + SPE_C99_FOPEN, //implemented
> + SPE_C99_FPUTC,
> + SPE_C99_FPUTS,
> + SPE_C99_FREAD,
> + SPE_C99_FREOPEN,
> + SPE_C99_FSEEK,
> + SPE_C99_FSETPOS,
> + SPE_C99_FTELL,
> + SPE_C99_FWRITE,
> + SPE_C99_GETC,
> + SPE_C99_GETCHAR,
> + SPE_C99_GETS,
> + SPE_C99_PERROR,
> + SPE_C99_PUTC,
> + SPE_C99_PUTCHAR,
> + SPE_C99_PUTS,
> + SPE_C99_REMOVE,
> + SPE_C99_RENAME,
> + SPE_C99_REWIND,
> + SPE_C99_SETBUF,
> + SPE_C99_SETVBUF,
> + SPE_C99_SYSTEM, //not yet implemented in newlib
> + SPE_C99_TMPFILE,
> + SPE_C99_TMPNAM,
> + SPE_C99_UNGETC,
> + SPE_C99_VFPRINTF,
> + SPE_C99_VFSCANF,
> + SPE_C99_VPRINTF,
> + SPE_C99_VSCANF,
> + SPE_C99_VSNPRINTF,
> + SPE_C99_VSPRINTF,
> + SPE_C99_VSSCANF,
> + SPE_C99_LAST_OPCODE,
> +};
> +#define SPE_C99_NR_OPCODES ((SPE_C99_LAST_OPCODE - SPE_C99_CLEARERR) + 1)
> +
> +#define SPE_STDIN 1
> +#define SPE_STDOUT 2
> +#define SPE_STDERR 3
> +#define SPE_FOPEN_MAX (FOPEN_MAX+1)
> +#define SPE_FOPEN_MIN 4
> +
> +struct spe_reg128{
> + unsigned int slot[4];
> +};
> +
> +static void
> +send_to_ppe(int signalcode, int opcode, void *data)
> +{
> +
> + unsigned int combined = ( ( opcode<<24 )&0xff000000 ) | ( ( unsigned int )data & 0x00ffffff );
> + struct spe_reg128* ret = data;
> +
> + vector unsigned int stopfunc = {
> + signalcode, /* stop 0x210x*/
> + (unsigned int) combined,
> + 0x4020007f, /* nop */
> + 0x35000000 /* bi $0 */
> + };
> +
> + void (*f) (void) = (void *) &stopfunc;
> + asm ("sync":::"memory");
> + f();
> + errno = ret->slot[3];
> + return;
> +}
> Index: src/newlib/libc/machine/spu/perror.c
> ===================================================================
> --- /dev/null
> +++ src/newlib/libc/machine/spu/perror.c
> @@ -0,0 +1,14 @@
> +#include <stdio.h>
> +
> +#include "c99ppe.h"
> +
> +void
> +_DEFUN (perror, (s),
> + _CONST char *s)
> +
> +{
> + send_to_ppe(SPE_C99_SIGNALCODE, SPE_C99_PERROR, &s);
> +
> + return;
> +}
> +
> Index: src/newlib/libc/machine/spu/putchar.c
> ===================================================================
> --- /dev/null
> +++ src/newlib/libc/machine/spu/putchar.c
> @@ -0,0 +1,17 @@
> +#include <stdio.h>
> +
> +#include "c99ppe.h"
> +
> +#undef putchar
> +
> +int
> +putchar (c)
> + int c;
> +{
> + /* c gets overwritten before return */
> +
> + send_to_ppe(SPE_C99_SIGNALCODE, SPE_C99_PUTCHAR, &c);
> +
> + return c;
> +}
> +
> Index: src/newlib/libc/machine/spu/puts.c
> ===================================================================
> --- /dev/null
> +++ src/newlib/libc/machine/spu/puts.c
> @@ -0,0 +1,16 @@
> +#include <stdio.h>
> +
> +#include "c99ppe.h"
> +
> +int
> +_DEFUN (puts, (s),
> + char _CONST * s)
> +{
> +
> + /* The return value gets written over s
> + */
> + send_to_ppe(SPE_C99_SIGNALCODE, SPE_C99_PUTS, &s);
> +
> + return (int)s;
> +}
> +
> Index: src/newlib/libc/machine/spu/vsnprintf.c
> ===================================================================
> --- /dev/null
> +++ src/newlib/libc/machine/spu/vsnprintf.c
> @@ -0,0 +1,47 @@
> +
> +#include <_ansi.h>
> +#include <stdio.h>
> +
> +#include "c99ppe.h"
> +
> +#ifdef _HAVE_STDC
> +#include <stdarg.h>
> +#else
> +#include <varargs.h>
> +#endif
> +
> +typedef struct
> +{
> + char* str;
> + unsigned int pad0[ 3 ];
> + size_t size;
> + unsigned int pad1[ 3 ];
> + char* fmt;
> + unsigned int pad2[ 3 ];
> + va_list ap;
> +} c99_vsnprintf_t;
> +
> +#ifndef _REENT_ONLY
> +
> +int
> +_DEFUN (vsnprintf, (str, size, fmt, ap),
> + char *str _AND
> + size_t size _AND
> + _CONST char *fmt _AND
> + va_list ap)
> +{
> + int* ret;
> + c99_vsnprintf_t args;
> + ret = (int*) &args;
> +
> + args.str = str;
> + args.size = size;
> + args.fmt = fmt;
> + va_copy(args.ap,ap);
> +
> + send_to_ppe(SPE_C99_SIGNALCODE, SPE_C99_VSNPRINTF, &args);
> +
> + return *ret;
> +}
> +
> +#endif /* ! _REENT_ONLY */
> Index: src/newlib/libc/machine/spu/vprintf.c
> ===================================================================
> --- /dev/null
> +++ src/newlib/libc/machine/spu/vprintf.c
> @@ -0,0 +1,39 @@
> +
> +#include <_ansi.h>
> +#include <stdio.h>
> +
> +#include "c99ppe.h"
> +
> +#ifdef _HAVE_STDC
> +#include <stdarg.h>
> +#else
> +#include <varargs.h>
> +#endif
> +
> +typedef struct
> +{
> + char* fmt;
> + unsigned int pad0[ 3 ];
> + va_list ap;
> +} c99_vprintf_t;
> +
> +#ifndef _REENT_ONLY
> +
> +int
> +_DEFUN (vprintf, (fmt, ap),
> + _CONST char *fmt _AND
> + va_list ap)
> +{
> + int* ret;
> + c99_vprintf_t args;
> + ret = (int*) &args;
> +
> + args.fmt = (char*) fmt;
> + va_copy(args.ap,ap);
> +
> + send_to_ppe(SPE_C99_SIGNALCODE, SPE_C99_VPRINTF, &args);
> +
> + return *ret;
> +}
> +
> +#endif /* ! _REENT_ONLY */
> Index: src/newlib/libc/machine/spu/vsprintf.c
> ===================================================================
> --- /dev/null
> +++ src/newlib/libc/machine/spu/vsprintf.c
> @@ -0,0 +1,39 @@
> +
> +#include <_ansi.h>
> +#include <stdio.h>
> +
> +#include "c99ppe.h"
> +
> +#ifdef _HAVE_STDC
> +#include <stdarg.h>
> +#else
> +#include <varargs.h>
> +#endif
> +
> +typedef struct
> +{
> + char *str;
> + unsigned int pad0[ 3 ];
> + char *fmt;
> + unsigned int pad1[ 3 ];
> + va_list ap;
> +} c99_vsprintf_t;
> +
> +int
> +_DEFUN (vsprintf, (str, fmt, ap),
> + char *str _AND
> + _CONST char *fmt _AND
> + va_list ap)
> +{
> + int* ret;
> + c99_vsprintf_t args;
> + ret = (int*) &args;
> +
> + args.str = str;
> + args.fmt = (char*) fmt;
> + va_copy(args.ap,ap);
> +
> + send_to_ppe(SPE_C99_SIGNALCODE, SPE_C99_VSPRINTF, &args);
> +
> + return *ret;
> +}
> Index: src/newlib/libc/machine/spu/Makefile.am
> ===================================================================
> --- src.orig/newlib/libc/machine/spu/Makefile.am
> +++ src/newlib/libc/machine/spu/Makefile.am
> @@ -8,7 +8,7 @@ noinst_LIBRARIES = lib.a
>
> AM_CCASFLAGS = $(INCLUDES)
>
> -lib_a_SOURCES = setjmp.S memcpy.c memmove.c memset.c strcat.c strchr.c strcmp.c strcpy.c strcspn.c strlen.c strncat.c strncmp.c strncpy.c strpbrk.c strrchr.c strspn.c strxfrm.c
> +lib_a_SOURCES = setjmp.S memcpy.c memmove.c memset.c strcat.c strchr.c strcmp.c strcpy.c strcspn.c strlen.c strncat.c strncmp.c strncpy.c strpbrk.c strrchr.c strspn.c strxfrm.c printf.c perror.c putchar.c puts.c vsnprintf.c vprintf.c vsprintf.c
>
> lib_a_CCASFLAGS = $(AM_CCASFLAGS)
> lib_a_CFLAGS = $(AM_CFLAGS)
> Index: src/newlib/libc/machine/spu/Makefile.in
> ===================================================================
> --- src.orig/newlib/libc/machine/spu/Makefile.in
> +++ src/newlib/libc/machine/spu/Makefile.in
> @@ -49,7 +49,11 @@ DIST_COMMON = $(srcdir)/../../../../conf
> $(srcdir)/../../../../compile $(srcdir)/../../../../compile \
> $(srcdir)/../../../../compile $(srcdir)/../../../../compile \
> $(srcdir)/../../../../compile $(srcdir)/../../../../compile \
> - $(srcdir)/../../../../compile $(srcdir)/../../../../compile
> + $(srcdir)/../../../../compile $(srcdir)/../../../../compile \
> + $(srcdir)/../../../../compile $(srcdir)/../../../../compile \
> + $(srcdir)/../../../../compile $(srcdir)/../../../../compile \
> + $(srcdir)/../../../../compile $(srcdir)/../../../../compile \
> + $(srcdir)/../../../../compile
> subdir = .
> ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
> am__aclocal_m4_deps = $(top_srcdir)/../../../acinclude.m4 \
> @@ -72,7 +76,10 @@ am_lib_a_OBJECTS = lib_a-setjmp.$(OBJEXT
> lib_a-strncat.$(OBJEXT) lib_a-strncmp.$(OBJEXT) \
> lib_a-strncpy.$(OBJEXT) lib_a-strpbrk.$(OBJEXT) \
> lib_a-strrchr.$(OBJEXT) lib_a-strspn.$(OBJEXT) \
> - lib_a-strxfrm.$(OBJEXT)
> + lib_a-strxfrm.$(OBJEXT) lib_a-printf.$(OBJEXT) \
> + lib_a-perror.$(OBJEXT) lib_a-putchar.$(OBJEXT) \
> + lib_a-puts.$(OBJEXT) lib_a-vsnprintf.$(OBJEXT) \
> + lib_a-vprintf.$(OBJEXT) lib_a-vsprintf.$(OBJEXT)
> lib_a_OBJECTS = $(am_lib_a_OBJECTS)
> DEFAULT_INCLUDES = -I. -I$(srcdir)
> depcomp =
> @@ -197,7 +204,7 @@ AUTOMAKE_OPTIONS = cygnus
> INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
> noinst_LIBRARIES = lib.a
> AM_CCASFLAGS = $(INCLUDES)
> -lib_a_SOURCES = setjmp.S memcpy.c memmove.c memset.c strcat.c strchr.c strcmp.c strcpy.c strcspn.c strlen.c strncat.c strncmp.c strncpy.c strpbrk.c strrchr.c strspn.c strxfrm.c
> +lib_a_SOURCES = setjmp.S memcpy.c memmove.c memset.c strcat.c strchr.c strcmp.c strcpy.c strcspn.c strlen.c strncat.c strncmp.c strncpy.c strpbrk.c strrchr.c strspn.c strxfrm.c printf.c perror.c putchar.c puts.c vsnprintf.c vprintf.c vsprintf.c
> lib_a_CCASFLAGS = $(AM_CCASFLAGS)
> lib_a_CFLAGS = $(AM_CFLAGS)
> ACLOCAL_AMFLAGS = -I ../../..
> @@ -367,6 +374,48 @@ lib_a-strxfrm.o: strxfrm.c
>
> lib_a-strxfrm.obj: strxfrm.c
> $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-strxfrm.obj `if test -f 'strxfrm.c'; then $(CYGPATH_W) 'strxfrm.c'; else $(CYGPATH_W) '$(srcdir)/strxfrm.c'; fi`
> +
> +lib_a-printf.o: printf.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-printf.o `test -f 'printf.c' || echo '$(srcdir)/'`printf.c
> +
> +lib_a-printf.obj: printf.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-printf.obj `if test -f 'printf.c'; then $(CYGPATH_W) 'printf.c'; else $(CYGPATH_W) '$(srcdir)/printf.c'; fi`
> +
> +lib_a-perror.o: perror.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-perror.o `test -f 'perror.c' || echo '$(srcdir)/'`perror.c
> +
> +lib_a-perror.obj: perror.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-perror.obj `if test -f 'perror.c'; then $(CYGPATH_W) 'perror.c'; else $(CYGPATH_W) '$(srcdir)/perror.c'; fi`
> +
> +lib_a-putchar.o: putchar.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-putchar.o `test -f 'putchar.c' || echo '$(srcdir)/'`putchar.c
> +
> +lib_a-putchar.obj: putchar.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-putchar.obj `if test -f 'putchar.c'; then $(CYGPATH_W) 'putchar.c'; else $(CYGPATH_W) '$(srcdir)/putchar.c'; fi`
> +
> +lib_a-puts.o: puts.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-puts.o `test -f 'puts.c' || echo '$(srcdir)/'`puts.c
> +
> +lib_a-puts.obj: puts.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-puts.obj `if test -f 'puts.c'; then $(CYGPATH_W) 'puts.c'; else $(CYGPATH_W) '$(srcdir)/puts.c'; fi`
> +
> +lib_a-vsnprintf.o: vsnprintf.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-vsnprintf.o `test -f 'vsnprintf.c' || echo '$(srcdir)/'`vsnprintf.c
> +
> +lib_a-vsnprintf.obj: vsnprintf.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-vsnprintf.obj `if test -f 'vsnprintf.c'; then $(CYGPATH_W) 'vsnprintf.c'; else $(CYGPATH_W) '$(srcdir)/vsnprintf.c'; fi`
> +
> +lib_a-vprintf.o: vprintf.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-vprintf.o `test -f 'vprintf.c' || echo '$(srcdir)/'`vprintf.c
> +
> +lib_a-vprintf.obj: vprintf.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-vprintf.obj `if test -f 'vprintf.c'; then $(CYGPATH_W) 'vprintf.c'; else $(CYGPATH_W) '$(srcdir)/vprintf.c'; fi`
> +
> +lib_a-vsprintf.o: vsprintf.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-vsprintf.o `test -f 'vsprintf.c' || echo '$(srcdir)/'`vsprintf.c
> +
> +lib_a-vsprintf.obj: vsprintf.c
> + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-vsprintf.obj `if test -f 'vsprintf.c'; then $(CYGPATH_W) 'vsprintf.c'; else $(CYGPATH_W) '$(srcdir)/vsprintf.c'; fi`
> uninstall-info-am:
>
> ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
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