config.host (alpha*-*-linux*): Use driver-alpha.o and alpha/x-alpha.

2009-03-24  Arthur Loiret  <aloiret@debian.org>

	* config.host (alpha*-*-linux*): Use driver-alpha.o and
	alpha/x-alpha.
	* config/alpha/linux.h (host_detect_local_cpu): Declare, add to
	EXTRA_SPEC_FUNCTIONS.
	(MCPU_MTUNE_NATIVE_SPECS, DRIVER_SELF_SPECS): New macros.
	* config/alpha/driver-alpha.c, config/alpha/x-alpha: New.
	* doc/invoke.texi (DEC Alpha Options): Document 'native' value for
	-march and -mtune options.

From-SVN: r145028
This commit is contained in:
Arthur Loiret 2009-03-24 10:33:57 +00:00 committed by Laurent Guerby
parent 92da2d44d6
commit d94a427e80
6 changed files with 148 additions and 3 deletions

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@ -1,3 +1,14 @@
2009-03-24 Arthur Loiret <aloiret@debian.org>
* config.host (alpha*-*-linux*): Use driver-alpha.o and
alpha/x-alpha.
* config/alpha/linux.h (host_detect_local_cpu): Declare, add to
EXTRA_SPEC_FUNCTIONS.
(MCPU_MTUNE_NATIVE_SPECS, DRIVER_SELF_SPECS): New macros.
* config/alpha/driver-alpha.c, config/alpha/x-alpha: New.
* doc/invoke.texi (DEC Alpha Options): Document 'native' value for
-march and -mtune options.
2009-03-24 Ralf Corsépius <ralf.corsepius@rtems.org>
* config/m68k/t-rtems: Add m5329 multilib.

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@ -94,6 +94,14 @@ case ${host} in
esac
case ${host} in
alpha*-*-linux*)
case ${target} in
alpha*-*-linux*)
host_extra_gcc_objs="driver-alpha.o"
host_xmake_file="${host_xmake_file} alpha/x-alpha"
;;
esac
;;
i[34567]86-*-* \
| x86_64-*-* )
case ${target} in
@ -112,9 +120,6 @@ case ${host} in
;;
esac
;;
esac
case ${host} in
rs6000-*-* \
| powerpc*-*-* )
case ${target} in

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@ -0,0 +1,100 @@
/* Subroutines for the gcc driver.
Copyright (C) 2009 Free Software Foundation, Inc.
Contributed by Arthur Loiret <aloiret@debian.org>
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 "tm.h"
/* This will be called by the spec parser in gcc.c when it sees
a %:local_cpu_detect(args) construct. Currently it will be called
with either "cpu" or "tune" as argument depending on if -mcpu=native
or -mtune=native is to be substituted.
It returns a string containing new command line parameters to be
put at the place of the above two options, depending on what CPU
this is executed. E.g. "-mcpu=ev6" on an Alpha 21264 for
-mcpu=native. If the routine can't detect a known processor,
the -mcpu or -mtune option is discarded.
ARGC and ARGV are set depending on the actual arguments given
in the spec. */
const char *
host_detect_local_cpu (int argc, const char **argv)
{
const char *cpu = NULL;
char buf[128];
FILE *f;
static const struct cpu_names {
const char *const name;
const char *const cpu;
} cpu_names[] = {
{ "EV79", "ev67" },
{ "EV7", "ev67" },
{ "EV69", "ev67" },
{ "EV68CX", "ev67" },
{ "EV68CB", "ev67" },
{ "EV68AL", "ev67" },
{ "EV67", "ev67" },
{ "EV6", "ev6" },
{ "PCA57", "pca56" },
{ "PCA56", "pca56" },
{ "EV56", "ev56" },
{ "EV5", "ev5" },
{ "LCA45", "ev45" },
{ "EV45", "ev45" },
{ "LCA4", "ev4" },
{ "EV4", "ev4" },
/* { "EV3", "ev3" }, */
{ 0, 0 }
};
int i;
if (argc < 1)
return NULL;
if (strcmp (argv[0], "cpu") && strcmp (argv[0], "tune"))
return NULL;
f = fopen ("/proc/cpuinfo", "r");
if (f == NULL)
return NULL;
while (fgets (buf, sizeof (buf), f) != NULL)
if (strncmp (buf, "cpu model", sizeof ("cpu model") - 1) == 0)
{
for (i = 0; cpu_names [i].name; i++)
if (strstr (buf, cpu_names [i].name) != NULL)
{
cpu = cpu_names [i].cpu;
break;
}
break;
}
fclose (f);
if (cpu == NULL)
return NULL;
return concat ("-m", argv[0], "=", cpu, NULL);
}

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@ -85,3 +85,19 @@ along with GCC; see the file COPYING3. If not see
/* Define if long doubles should be mangled as 'g'. */
#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
/* -mcpu=native handling only makes sense with compiler running on
an Alpha chip. */
#if defined(__alpha__) || defined(__alpha)
extern const char *host_detect_local_cpu (int argc, const char **argv);
# define EXTRA_SPEC_FUNCTIONS \
{ "local_cpu_detect", host_detect_local_cpu },
# define MCPU_MTUNE_NATIVE_SPECS \
" %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}" \
" %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
#else
# define MCPU_MTUNE_NATIVE_SPECS ""
#endif
#define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS

3
gcc/config/alpha/x-alpha Normal file
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@ -0,0 +1,3 @@
driver-alpha.o: $(srcdir)/config/alpha/driver-alpha.c \
$(CONFIG_H) $(SYSTEM_H)
$(CC) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<

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@ -10212,11 +10212,21 @@ Schedules as an EV6 and supports the BWX, FIX, and MAX extensions.
Schedules as an EV6 and supports the BWX, CIX, FIX, and MAX extensions.
@end table
Native Linux/GNU toolchains also support the value @samp{native},
which selects the best architecture option for the host processor.
@option{-mcpu=native} has no effect if GCC does not recognize
the processor.
@item -mtune=@var{cpu_type}
@opindex mtune
Set only the instruction scheduling parameters for machine type
@var{cpu_type}. The instruction set is not changed.
Native Linux/GNU toolchains also support the value @samp{native},
which selects the best architecture option for the host processor.
@option{-mtune=native} has no effect if GCC does not recognize
the processor.
@item -mmemory-latency=@var{time}
@opindex mmemory-latency
Sets the latency the scheduler should assume for typical memory