config.gcc (mips64*-*-linux*): Added.

* config.gcc (mips64*-*-linux*): Added.
* config/mips/linux64.h, config/mips/t-linux64: New file.
* config/mips/iris6.h (MIPS_TFMODE_FORMAT): Define.
* config/mips/mips.c (override_options): Use it.
* config/mips/mips.h (TARGET_SWITCHES): Added...
(SUBTARGET_TARGET_SWITCHES): New, empty by default.
* Makefile.in (SPECS): New.
(STAGESTUFF, specs, mostlyclean, install-common): Use it.
* gcc.c (process_command): Move self-spec processing past spec
file loading.
* doc/tm.texi (DRIVER_SELF_SPECS): Document the change.
* doc/fragments.texi (MULTILIB_EXTRA_OPTS): Document need for
CRTSTUFF_T_CFLAGS.
(SPECS): Document.
* doc/invoke.texi (-mabi-fake-default): Document.

From-SVN: r61481

5 files changed, 149 insertions, 1 deletions

diff --git a/gcc/config/mips/iris6.h b/gcc/config/mips/iris6.h
index ddfea8f..314f98c 100644
--- a/gcc/config/mips/iris6.h
+++ b/gcc/config/mips/iris6.h
@@ -1,5 +1,5 @@
 /* Definitions of target machine for GNU compiler.  Iris version 6.
-   Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002
+   Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003
    Free Software Foundation, Inc.
 
 This file is part of GNU CC.
@@ -509,3 +509,5 @@ do {									 \
 %{shared:-hidden_symbol __do_global_ctors,__do_global_ctors_1,__do_global_dtors} \
 -_SYSTYPE_SVR4 -woff 131 \
 %{mabi=32: -32}%{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"
+
+#define MIPS_TFMODE_FORMAT ibm_extended_format
diff --git a/gcc/config/mips/linux64.h b/gcc/config/mips/linux64.h
new file mode 100644
index 0000000..ef30146
--- /dev/null
+++ b/gcc/config/mips/linux64.h
@@ -0,0 +1,99 @@
+/* Definitions for MIPS running Linux-based GNU systems with ELF format
+   using n32/64 abi.
+   Copyright 2002, 2003 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 2, 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 COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* This sets the post-install default ABI to n32.  This must NOT be
+   kept in sync with the default ABI in gcc/config.gcc; it's actually
+   meant to override that.  However, for correct behavior at build
+   time, we also need t-linux64 to get the build-time specs in line
+   with the setting in config.gcc.  */
+#define DRIVER_DEFAULT_ABI_SELF_SPEC "%{!mabi=*:-mabi=n32}"
+#define SUBTARGET_EXTRA_SPECS \
+  { "driver_default_abi_self_spec", DRIVER_DEFAULT_ABI_SELF_SPEC },
+#define DRIVER_SELF_SPECS \
+"%{mabi-fake-default:%{!mabi=*:-mabi=32}}", \
+"%(driver_default_abi_self_spec)", \
+"%{!mips*:%{mabi=32:-mips1}%{mabi=n32:-mips3}%{mabi=64:-mips4}}"
+#undef SUBTARGET_TARGET_SWITCHES
+#define SUBTARGET_TARGET_SWITCHES \
+  { "abi-fake-default", 0, N_("Same as -mabi=32, just trickier") },
+
+#undef SUBTARGET_ASM_SPEC
+#define SUBTARGET_ASM_SPEC "\
+%{!fno-PIC:%{!fno-pic:-KPIC}} \
+%{fno-PIC:-non_shared} %{fno-pic:-non_shared} \
+%{mabi=64:-64} %{mabi=n32:-n32} \
+%{!mips*: %{mabi=n32|mabi=32:-mips3} %{mabi=64:-mips4}}"
+
+#undef LIB_SPEC
+#define LIB_SPEC "\
+%{!static: \
+ %{mabi=n32:-rpath-link %R/lib32:%R/usr/lib32} \
+ %{mabi=64:-rpath-link %R/lib64:%R/usr/lib64} \
+ %{mabi=32:-rpath-link %R/lib:%R/usr/lib}} \
+%{!shared: %{pthread:-lthread} %{profile:-lc_p} %{!profile: -lc}}"
+
+#undef LINK_SPEC
+#define LINK_SPEC "\
+%{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \
+%{bestGnum} %{shared} %{non_shared} \
+%{call_shared} %{no_archive} %{exact_version} \
+ %(endian_spec) \
+  %{!shared: \
+    %{!ibcs: \
+      %{!static: \
+        %{rdynamic:-export-dynamic} \
+        %{!dynamic-linker: \
+	  %{mabi=n32: -dynamic-linker /lib32/ld.so.1} \
+	  %{mabi=64: -dynamic-linker /lib64/ld.so.1} \
+	  %{mabi=32: -dynamic-linker /lib/ld.so.1}}} \
+      %{static:-static}}} \
+%{mabi=n32: -melf32btsmipn32} \
+%{mabi=64: -melf64btsmip} \
+%{mabi=32: -melf32btsmip}"
+
+#undef STARTFILE_PREFIX_SPEC
+#define STARTFILE_PREFIX_SPEC "\
+%{mabi=n32: /lib32/ /usr/lib32/} \
+%{mabi=64: /lib64/ /usr/lib64/} \
+%{mabi=32: /lib/ /usr/lib/}"
+
+#undef LOCAL_LABEL_PREFIX
+#define LOCAL_LABEL_PREFIX ((mips_abi == ABI_32 || mips_abi == ABI_O64) \
+			    ? "$" : ".")
+
+/* The size in bytes of a DWARF field indicating an offset or length
+   relative to a debug info section, specified to be 4 bytes in the DWARF-2
+   specification.  The SGI/MIPS ABI defines it to be the same as PTR_SIZE.  */
+#define DWARF_OFFSET_SIZE PTR_SIZE
+
+#undef ASM_PREFERRED_EH_DATA_FORMAT
+#if 0  /* We can't use relative addressing modes on NEWABI :-(  */
+#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL)       		\
+   (flag_pic								\
+    ? ((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_sdata4		\
+    : DW_EH_PE_absptr)
+#endif
+
+/* GNU/Linux doesn't use the same floating-point format that IRIX uses
+   for long double.  There's no need to override this here, since
+   ieee_quad_format is the default, but let's put this here to make
+   sure nobody thinks we just forgot to set it to something else.  */
+#define MIPS_TFMODE_FORMAT ieee_quad_format
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 5c0b78a..c0133fa 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -5359,6 +5359,10 @@ override_options ()
   else
     mips16 = 0;
 
+#ifdef MIPS_TFMODE_FORMAT
+  real_format_for_mode[TFmode - QFmode] = &MIPS_TFMODE_FORMAT;
+#endif
+  
   mips_print_operand_punct['?'] = 1;
   mips_print_operand_punct['#'] = 1;
   mips_print_operand_punct['&'] = 1;
diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h
index 2514006..09d4663 100644
--- a/gcc/config/mips/mips.h
+++ b/gcc/config/mips/mips.h
@@ -534,6 +534,7 @@ extern void		sbss_section PARAMS ((void));
 
 #define TARGET_SWITCHES							\
 {									\
+  SUBTARGET_TARGET_SWITCHES						\
   {"no-crt0",          0,                                               \
      N_("No default crt0.o") },					 	\
   {"int64",		  MASK_INT64 | MASK_LONG64,			\
@@ -993,6 +994,7 @@ extern void		sbss_section PARAMS ((void));
 
 #define GAS_ASM_SPEC "%{mtune=*} %{v}"
 
+#define SUBTARGET_TARGET_SWITCHES
 
 extern int mips_abi;
 
diff --git a/gcc/config/mips/t-linux64 b/gcc/config/mips/t-linux64
new file mode 100644
index 0000000..cf63928
--- /dev/null
+++ b/gcc/config/mips/t-linux64
@@ -0,0 +1,41 @@
+MULTILIB_OPTIONS = mabi=32/mabi=n32/mabi=64
+MULTILIB_DIRNAMES = o32 32 64
+MULTILIB_OSDIRNAMES = ../lib ../lib32 ../lib64
+
+EXTRA_MULTILIB_PARTS=crtbegin.o crtend.o crtbeginS.o crtendS.o crtbeginT.o
+
+LIB2FUNCS_EXTRA = $(srcdir)/config/mips/_tilib.c
+
+TPBIT = tp-bit.c
+
+tp-bit.c: $(srcdir)/config/fp-bit.c
+	echo '#ifdef __MIPSEL__' > tp-bit.c
+	echo '# define FLOAT_BIT_ORDER_MISMATCH' >> tp-bit.c
+	echo '#endif' >> tp-bit.c
+	echo '#if __LDBL_MANT_DIG__ == 113' >> tp-bit.c
+	echo '# define TFLOAT' >> tp-bit.c
+	cat $(srcdir)/config/fp-bit.c >> tp-bit.c
+	echo '#endif' >> tp-bit.c
+
+# This arranges for us to extract the built-in specs of the compiler
+# into specs.install.  It's this file that we're going to install as
+# specs.  Howver, at toolchain build time, we must use specs that
+# enforce the defaults that the compiler expects, namely, the o32 ABI,
+# instead of n32, that we want to use as the default post install.
+SPECS = specs.install
+specs: specs.install
+	# Changing the build-time default ABI from n32 to o32
+	# The post-install default ABI will remain n32
+	@if test "x`grep '!mabi=\*:-mabi=n32' specs.install`" = \
+		"x%{!mabi=*:-mabi=n32}"; then \
+	  sed 's,\(!mabi=\*:-mabi\)=n32,\1=32,' < specs.install > $@ ; \
+	else \
+	  echo failed, gcc/config/mips/t-linux64 needs updating >&2; \
+	  false; \
+	fi
+
+# This arranges for anyone who uses gcc -print-multi-lib post
+# installation to get lists of options for each multilib to get
+# options that actually work.
+MULTILIB_EXTRA_OPTS = mabi-fake-default
+CRTSTUFF_T_CFLAGS = -mabi-fake-default