+2008-06-16 Daniel Jacobowitz <dan@codesourcery.com>
+ Kazu Hirata <kazu@codesourcery.com>
+ Maxim Kuvyrkov <maxim@codesourcery.com
+
+ * config.gcc (mips64el-st-linux-gnu): Use mips/st.h and mips/t-st.
+ * config.host: Use driver-native.o and mips/x-native for mips*-linux*.
+ * config/mips/linux.h (host_detect_local_cpu): Declare, add to
+ EXTRA_SPEC_FUNCTIONS.
+ (MARCH_MTUNE_NATIVE_SPECS, BASE_DRIVER_SELF_SPECS): New macros.
+ (DRIVER_SELF_SPECS): Adjust.
+ * config/mips/linux64.h (DRIVER_SELF_SPECS): Update.
+ * config/mips/st.h, config/mips/t-st: New.
+ * config/mips/driver-native.c, config/mips/x-native: New.
+ * doc/invoke.texi (MIPS): Document 'native' value for -march and
+ -mtune options.
+
2008-06-18 Maxim Kuvyrkov <maxim@codesourcery.com>
* config/mips/mips.h (ISA_HAS_CONDMOVE): Slice ISA_HAS_FP_CONDMOVE
tm_file="dbxelf.h elfos.h svr4.h linux.h ${tm_file} mips/linux.h mips/linux64.h"
tmake_file="${tmake_file} mips/t-linux64"
tm_defines="${tm_defines} MIPS_ABI_DEFAULT=ABI_N32"
+ case ${target} in
+ mips64el-st-linux-gnu)
+ tm_file="${tm_file} mips/st.h"
+ tmake_file="${tmake_file} mips/t-st"
+ ;;
+ esac
gnu_ld=yes
gas=yes
test x$with_llsc != x || with_llsc=yes
;;
esac
;;
+ mips*-*-linux*)
+ case ${target} in
+ mips*-*-linux*)
+ host_extra_gcc_objs="driver-native.o"
+ host_xmake_file="${host_xmake_file} mips/x-native"
+ ;;
+ esac
+ ;;
esac
case ${host} in
--- /dev/null
+/* Subroutines for the gcc driver.
+ Copyright (C) 2008 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"
+
+/* 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;
+ char buf[128];
+ FILE *f;
+ bool arch;
+
+ if (argc < 1)
+ return NULL;
+
+ arch = strcmp (argv[0], "arch") == 0;
+ if (!arch && 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)
+ {
+ 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";
+ break;
+ }
+
+ fclose (f);
+
+ if (cpu == NULL)
+ return NULL;
+
+ return concat ("-m", argv[0], "=", cpu, NULL);
+}
#ifdef HAVE_AS_NO_SHARED
/* Default to -mno-shared for non-PIC. */
-#define NO_SHARED_SPECS \
+# define NO_SHARED_SPECS \
"%{mshared|mno-shared|fpic|fPIC|fpie|fPIE:;:-mno-shared}"
-#define DRIVER_SELF_SPECS NO_SHARED_SPECS
#else
-#define NO_SHARED_SPECS
+# define NO_SHARED_SPECS ""
#endif
+
+/* -march=native handling only makes sense with compiler running on
+ a MIPS chip. */
+#if defined(__mips__)
+extern const char *host_detect_local_cpu (int argc, const char **argv);
+# define EXTRA_SPEC_FUNCTIONS \
+ { "local_cpu_detect", host_detect_local_cpu },
+
+# define MARCH_MTUNE_NATIVE_SPECS \
+ " %{march=native:%<march=native %:local_cpu_detect(arch)}" \
+ " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
+#else
+# define MARCH_MTUNE_NATIVE_SPECS ""
+#endif
+
+#define BASE_DRIVER_SELF_SPECS \
+ NO_SHARED_SPECS \
+ MARCH_MTUNE_NATIVE_SPECS
+#define DRIVER_SELF_SPECS BASE_DRIVER_SELF_SPECS
in order to make the other specs easier to write. */
#undef DRIVER_SELF_SPECS
#define DRIVER_SELF_SPECS \
-NO_SHARED_SPECS \
+BASE_DRIVER_SELF_SPECS \
" %{!EB:%{!EL:%(endian_spec)}}" \
" %{!mabi=*: -mabi=n32}"
--- /dev/null
+/* ST 2e / 2f GNU/Linux Configuration.
+ Copyright (C) 2008
+ 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/>. */
+
+/* The various C libraries each have their own subdirectory. */
+#undef SYSROOT_SUFFIX_SPEC
+#define SYSROOT_SUFFIX_SPEC \
+ "%{march=loongson2e:/2e ; \
+ march=loongson2f:/2f}"
+
+#undef STARTFILE_PREFIX_SPEC
+#define STARTFILE_PREFIX_SPEC \
+ "%{mabi=32: /usr/local/lib/ /lib/ /usr/lib/} \
+ %{mabi=n32: /usr/local/lib32/ /lib32/ /usr/lib32/} \
+ %{mabi=64: /usr/local/lib64/ /lib64/ /usr/lib64/}"
--- /dev/null
+MULTILIB_OPTIONS = march=loongson2e/march=loongson2f mabi=n32/mabi=32/mabi=64
+MULTILIB_DIRNAMES = 2e 2f lib32 lib lib64
+
+MULTILIB_OSDIRNAMES = march.loongson2e/mabi.n32=../lib32/2e
+MULTILIB_OSDIRNAMES += march.loongson2e/mabi.32=../lib/2e
+MULTILIB_OSDIRNAMES += march.loongson2e/mabi.64=../lib64/2e
+MULTILIB_OSDIRNAMES += march.loongson2f/mabi.n32=../lib32/2f
+MULTILIB_OSDIRNAMES += march.loongson2f/mabi.32=../lib/2f
+MULTILIB_OSDIRNAMES += march.loongson2f/mabi.64=../lib64/2f
+MULTILIB_OSDIRNAMES += mabi.n32=../lib32
+MULTILIB_OSDIRNAMES += mabi.32=../lib
+MULTILIB_OSDIRNAMES += mabi.64=../lib64
+
+EXTRA_MULTILIB_PARTS=crtbegin.o crtend.o crtbeginS.o crtendS.o crtbeginT.o
--- /dev/null
+driver-native.o : $(srcdir)/config/mips/driver-native.c \
+ $(CONFIG_H) $(SYSTEM_H)
+ $(CC) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<
most compatible architecture for the selected ABI (that is,
@samp{mips1} for 32-bit ABIs and @samp{mips3} for 64-bit ABIs)@.
+Native Linux/GNU toolchains also support the value @samp{native},
+which selects the best architecture option for the host processor.
+@option{-march=native} has no effect if GCC does not recognize
+the processor.
+
In processor names, a final @samp{000} can be abbreviated as @samp{k}
(for example, @samp{-march=r2k}). Prefixes are optional, and
@samp{vr} may be written @samp{r}.
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