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/* Subroutines for the gcc driver.
Copyright (C) 2008, 2011 Free Software Foundation, Inc.
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"
#ifdef __sgi__
#include <invent.h>
#include <sys/sbd.h>
/* Cf. MIPS R10000 Microprocessor User Guide, Version 2.0, 14.13 Processor
Revision Identifier (PRId) Register (15).
http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi/hdwr/bks/SGI_Developer/books/R10K_UM/sgi_html/t5.Ver.2.0.book_279.html */
static const struct cpu_types {
int impl;
const char *cpu;
} cpu_types[] = {
{ C0_IMP_R2000, "r2000" },
{ C0_IMP_R3000, "r3000" },
{ C0_IMP_R6000, "r6000" },
{ C0_IMP_R4000, "r4000" },
{ C0_IMP_R6000A, "r6000" },
{ C0_IMP_R10000, "r10000" },
{ C0_IMP_R12000, "r12000" },
{ C0_IMP_R14000, "r14000" },
{ C0_IMP_R8000, "r8000" },
{ C0_IMP_R4600, "r4600" },
{ C0_IMP_R4700, "r4600" },
{ C0_IMP_R4650, "r4650" },
{ C0_IMP_R5000, "vr5000" },
{ C0_IMP_RM7000, "rm7000" },
{ C0_IMP_RM5271, "vr5000" },
{ 0, 0 }
};
static int
cputype (inventory_t *inv, void *arg)
{
if (inv != NULL
&& inv->inv_class == INV_PROCESSOR
&& inv->inv_type == INV_CPUCHIP)
{
int i;
/* inv_state is the cpu revision number. */
int impl = (inv->inv_state & C0_IMPMASK) >> C0_IMPSHIFT;
for (i = 0; cpu_types[i].cpu != NULL; i++)
if (cpu_types[i].impl == impl)
{
*((const char **) arg) = cpu_types[i].cpu;
break;
}
}
return 0;
}
#endif
/* 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 "arch" or "tune" as argument depending on if -march=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. "-march=loongson2f" on a Loongson 2F for
-march=native. If the routine can't detect a known processor,
the -march 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;
#ifndef __sgi__
char buf[128];
FILE *f;
#endif
bool arch;
if (argc < 1)
return NULL;
arch = strcmp (argv[0], "arch") == 0;
if (!arch && strcmp (argv[0], "tune"))
return NULL;
#ifdef __sgi__
scaninvent (cputype, &cpu);
#else
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)
{
if (strstr (buf, "Godson2 V0.2") != NULL
|| strstr (buf, "Loongson-2 V0.2") != NULL)
cpu = "loongson2e";
else if (strstr (buf, "Godson2 V0.3") != NULL
|| strstr (buf, "Loongson-2 V0.3") != NULL)
cpu = "loongson2f";
else if (strstr (buf, "SiByte SB1") != NULL)
cpu = "sb1";
else if (strstr (buf, "R5000") != NULL)
cpu = "r5000";
else if (strstr (buf, "Octeon II") != NULL)
cpu = "octeon2";
else if (strstr (buf, "Octeon") != NULL)
cpu = "octeon";
break;
}
fclose (f);
#endif
if (cpu == NULL)
return NULL;
return concat ("-m", argv[0], "=", cpu, NULL);
}
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