add support for -EL and -EB

From-SVN: r8471

9 files changed, 107 insertions, 74 deletions

diff --git a/gcc/config/mips/dec-bsd.h b/gcc/config/mips/dec-bsd.h
index 0c7c046..8fb46dd 100644
--- a/gcc/config/mips/dec-bsd.h
+++ b/gcc/config/mips/dec-bsd.h
@@ -50,7 +50,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 %{!.S:%{!.s:	-D__LANGUAGE_C -D_LANGUAGE_C %{!ansi:-DLANGUAGE_C}}} \
 %{mlong64:-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int} \
 %{!mlong64:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
-%{mips3:-U__mips -D__mips=3}"
+%{mips3:-U__mips -D__mips=3} \
+%{EB:-UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ -D_MIPSEB -D__MIPSEB -D__MIPSEB__ %{!ansi:-DMIPSEB}} \
+%{EL:-UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ -D_MIPSEL -D__MIPSEL -D__MIPSEL__ %{!ansi:-DMIPSEL}}"
 #endif
 
 /* Always uses GNU ld.  */
diff --git a/gcc/config/mips/dec-osf1.h b/gcc/config/mips/dec-osf1.h
index 3c73477..27c2a25 100644
--- a/gcc/config/mips/dec-osf1.h
+++ b/gcc/config/mips/dec-osf1.h
@@ -51,7 +51,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 %{.m:	-D__LANGUAGE_OBJECTIVE_C__ -D__LANGUAGE_OBJECTIVE_C} \
 %{!.S:%{!.s:	-D__LANGUAGE_C__  -D__LANGUAGE_C %{!ansi:-DLANGUAGE_C}}} \
 %{mlong64:-D__PTRDIFF_TYPE__=long\\ int} \
-%{!mlong64:-D__PTRDIFF_TYPE__=int}"
+%{!mlong64:-D__PTRDIFF_TYPE__=int} \
+%{EB:-UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ -D_MIPSEB -D__MIPSEB -D__MIPSEB__ %{!ansi:-DMIPSEB}} \
+%{EL:-UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ -D_MIPSEL -D__MIPSEL -D__MIPSEL__ %{!ansi:-DMIPSEL}}"
 
 /* turn off collect2 COFF support, since ldfcn now has elf declaration */
 #undef OBJECT_FORMAT_COFF
diff --git a/gcc/config/mips/iris3.h b/gcc/config/mips/iris3.h
index d075818..da3920a 100644
--- a/gcc/config/mips/iris3.h
+++ b/gcc/config/mips/iris3.h
@@ -38,7 +38,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 %{!.S: %{!.s: %{!.cc: %{!.cxx: %{!.C: %{!.m: -D_LANGUAGE_C %{!ansi:-DLANGUAGE_C}}}}}}} \
 %{mlong64:-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int} \
 %{!mlong64:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
-%{mips3:-U__mips -D__mips=3}"
+%{mips3:-U__mips -D__mips=3} \
+%{EB:-UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ -D_MIPSEB -D__MIPSEB -D__MIPSEB__ %{!ansi:-DMIPSEB}} \
+%{EL:-UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ -D_MIPSEL -D__MIPSEL -D__MIPSEL__ %{!ansi:-DMIPSEL}}"
 
 #define LIB_SPEC	\
 	"%{!p:%{!pg:%{!static:%{!g*:-lc_s}} -lc}}%{p:-lc_p}%{pg:-lc_p} crtn.o%s"
diff --git a/gcc/config/mips/iris5.h b/gcc/config/mips/iris5.h
index 5290136..5b1987b 100644
--- a/gcc/config/mips/iris5.h
+++ b/gcc/config/mips/iris5.h
@@ -73,7 +73,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 %{!mlong64: -D_MIPS_SZLONG=32}%{mlong64: -D_MIPS_SZLONG=64} \
 %{mlong64:-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int} \
 %{!mlong64:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
-%{mips3:-U__mips -D__mips=3}"
+%{mips3:-U__mips -D__mips=3} \
+%{EB:-UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ -D_MIPSEB -D__MIPSEB -D__MIPSEB__ %{!ansi:-DMIPSEB}} \
+%{EL:-UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ -D_MIPSEL -D__MIPSEL -D__MIPSEL__ %{!ansi:-DMIPSEL}}"
 
 #undef LINK_SPEC
 #define LINK_SPEC "\
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 6fa67cf..e22b76b 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -1328,9 +1328,8 @@ mips_move_2words (operands, insn)
 		    {
 		      if (TARGET_FLOAT64 && !TARGET_64BIT)
 			{
-			  operands[2] = GEN_INT (CONST_DOUBLE_LOW (op1));
-			  operands[3] = GEN_INT (CONST_DOUBLE_HIGH (op1));
-			  ret = "li\t%M0,%3\n\tli\t%L0,%2";
+			  split_double (op1, operands + 2, operands + 3);
+			  ret = "li\t%0,%2\n\tli\t%D0,%3";
 			}
 		      else
 			ret = "li.d\t%0,%1\n\tdsll\t%D0,%0,32\n\tdsrl\t%D0,32\n\tdsrl\t%0,32";
@@ -1345,9 +1344,8 @@ mips_move_2words (operands, insn)
 
 	      else
 		{
-		  operands[2] = GEN_INT (CONST_DOUBLE_LOW (op1));
-		  operands[3] = GEN_INT (CONST_DOUBLE_HIGH (op1));
-		  ret = "li\t%M0,%3\n\tli\t%L0,%2";
+		  split_double (op1, operands + 2, operands + 3);
+		  ret = "li\t%0,%2\n\tli\t%D0,%3";
 		}
 	    }
 
@@ -2481,19 +2479,22 @@ output_block_move (insn, operands, num_regs, move_type)
       /* ??? Fails because of a MIPS assembler bug?  */
       else if (TARGET_64BIT && bytes >= 8)
 	{
-#if BYTES_BIG_ENDIAN
-	  load_store[num].load       = "ldl\t%0,%1\n\tldr\t%0,%2";
-	  load_store[num].load_nop   = "ldl\t%0,%1\n\tldr\t%0,%2%#";
-	  load_store[num].store      = "sdl\t%0,%1\n\tsdr\t%0,%2";
-	  load_store[num].last_store = "sdr\t%0,%2";
-	  load_store[num].final      = "sdl\t%0,%1";
-#else
-	  load_store[num].load	     = "ldl\t%0,%2\n\tldr\t%0,%1";
-	  load_store[num].load_nop   = "ldl\t%0,%2\n\tldr\t%0,%1%#";
-	  load_store[num].store	     = "sdl\t%0,%2\n\tsdr\t%0,%1";
-	  load_store[num].last_store = "sdr\t%0,%1";
-	  load_store[num].final      = "sdl\t%0,%2";
-#endif
+	  if (BYTES_BIG_ENDIAN)
+	    {
+	      load_store[num].load       = "ldl\t%0,%1\n\tldr\t%0,%2";
+	      load_store[num].load_nop   = "ldl\t%0,%1\n\tldr\t%0,%2%#";
+	      load_store[num].store      = "sdl\t%0,%1\n\tsdr\t%0,%2";
+	      load_store[num].last_store = "sdr\t%0,%2";
+	      load_store[num].final      = "sdl\t%0,%1";
+	    }
+	  else
+	    {
+	      load_store[num].load	     = "ldl\t%0,%2\n\tldr\t%0,%1";
+	      load_store[num].load_nop   = "ldl\t%0,%2\n\tldr\t%0,%1%#";
+	      load_store[num].store	     = "sdl\t%0,%2\n\tsdr\t%0,%1";
+	      load_store[num].last_store = "sdr\t%0,%1";
+	      load_store[num].final      = "sdl\t%0,%2";
+	    }
 	  load_store[num].mode = DImode;
 	  offset += 8;
 	  bytes -= 8;
@@ -2514,19 +2515,22 @@ output_block_move (insn, operands, num_regs, move_type)
 
       else if (bytes >= 4)
 	{
-#if BYTES_BIG_ENDIAN
-	  load_store[num].load       = "lwl\t%0,%1\n\tlwr\t%0,%2";
-	  load_store[num].load_nop   = "lwl\t%0,%1\n\tlwr\t%0,%2%#";
-	  load_store[num].store      = "swl\t%0,%1\n\tswr\t%0,%2";
-	  load_store[num].last_store = "swr\t%0,%2";
-	  load_store[num].final      = "swl\t%0,%1";
-#else
-	  load_store[num].load	     = "lwl\t%0,%2\n\tlwr\t%0,%1";
-	  load_store[num].load_nop   = "lwl\t%0,%2\n\tlwr\t%0,%1%#";
-	  load_store[num].store	     = "swl\t%0,%2\n\tswr\t%0,%1";
-	  load_store[num].last_store = "swr\t%0,%1";
-	  load_store[num].final      = "swl\t%0,%2";
-#endif
+	  if (BYTES_BIG_ENDIAN)
+	    {
+	      load_store[num].load       = "lwl\t%0,%1\n\tlwr\t%0,%2";
+	      load_store[num].load_nop   = "lwl\t%0,%1\n\tlwr\t%0,%2%#";
+	      load_store[num].store      = "swl\t%0,%1\n\tswr\t%0,%2";
+	      load_store[num].last_store = "swr\t%0,%2";
+	      load_store[num].final      = "swl\t%0,%1";
+	    }
+	  else
+	    {
+	      load_store[num].load	     = "lwl\t%0,%2\n\tlwr\t%0,%1";
+	      load_store[num].load_nop   = "lwl\t%0,%2\n\tlwr\t%0,%1%#";
+	      load_store[num].store	     = "swl\t%0,%2\n\tswr\t%0,%1";
+	      load_store[num].last_store = "swr\t%0,%1";
+	      load_store[num].final      = "swl\t%0,%2";
+	    }
 	  load_store[num].mode = SImode;
 	  offset += 4;
 	  bytes -= 4;
@@ -3623,13 +3627,9 @@ print_operand (file, op, letter)
     {
       register int regnum = REGNO (op);
 
-      if (letter == 'M')
-	regnum += MOST_SIGNIFICANT_WORD;
-
-      else if (letter == 'L')
-	regnum += LEAST_SIGNIFICANT_WORD;
-
-      else if (letter == 'D')
+      if ((letter == 'M' && ! WORDS_BIG_ENDIAN)
+	  || (letter == 'L' && WORDS_BIG_ENDIAN)
+	  || letter == 'D')
 	regnum++;
 
       fprintf (file, "%s", reg_names[regnum]);
diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h
index 37ca9a9..5347988 100644
--- a/gcc/config/mips/mips.h
+++ b/gcc/config/mips/mips.h
@@ -259,7 +259,7 @@ extern char	       *mktemp ();
 #define MASK_64BIT	0x00002000	/* Use 64 bit GP registers and insns */
 #define MASK_EMBEDDED_PIC 0x00004000	/* Generate embedded PIC code */
 #define MASK_EMBEDDED_DATA 0x00008000	/* Reduce RAM usage, not fast code */
-#define MASK_UNUSED4	0x00010000
+#define MASK_BIG_ENDIAN	0x00010000	/* Generate big endian code */
 #define MASK_UNUSED3	0x00020000
 #define MASK_UNUSED2	0x00040000
 #define MASK_UNUSED1	0x00080000
@@ -338,6 +338,9 @@ extern char	       *mktemp ();
 					   fastest code.  */
 #define TARGET_EMBEDDED_DATA	(target_flags & MASK_EMBEDDED_DATA)
 
+					/* generate big endian code.  */
+#define TARGET_BIG_ENDIAN	(target_flags & MASK_BIG_ENDIAN)
+
 /* Macro to define tables used to set the flags.
    This is a list in braces of pairs in braces,
    each pair being { "NAME", VALUE }
@@ -378,6 +381,8 @@ extern char	       *mktemp ();
   {"no-embedded-pic",	 -MASK_EMBEDDED_PIC},				\
   {"embedded-data",	  MASK_EMBEDDED_DATA},				\
   {"no-embedded-data",	 -MASK_EMBEDDED_DATA},				\
+  {"eb",		  MASK_BIG_ENDIAN},				\
+  {"el",		 -MASK_BIG_ENDIAN},				\
   {"debug",		  MASK_DEBUG},					\
   {"debuga",		  MASK_DEBUG_A},				\
   {"debugb",		  MASK_DEBUG_B},				\
@@ -389,7 +394,9 @@ extern char	       *mktemp ();
   {"debugh",		  MASK_DEBUG_H},				\
   {"debugi",		  MASK_DEBUG_I},				\
   {"debugj",		  MASK_DEBUG_J},				\
-  {"",			  TARGET_DEFAULT | TARGET_CPU_DEFAULT}		\
+  {"",			  (TARGET_DEFAULT				\
+			   | TARGET_CPU_DEFAULT				\
+			   | TARGET_ENDIAN_DEFAULT)}			\
 }
 
 /* Default target_flags if no switches are specified  */
@@ -402,6 +409,14 @@ extern char	       *mktemp ();
 #define TARGET_CPU_DEFAULT 0
 #endif
 
+#ifndef TARGET_ENDIAN_DEFAULT
+#ifndef DECSTATION
+#define TARGET_ENDIAN_DEFAULT MASK_BIG_ENDIAN
+#else
+#define TARGET_ENDIAN_DEFAULT 0
+#endif
+#endif
+
 /* This macro is similar to `TARGET_SWITCHES' but defines names of
    command options that have values.  Its definition is an
    initializer with a subgrouping for each command option.
@@ -648,7 +663,7 @@ while (0)
 #define CC1_SPEC "\
 %{gline:%{!g:%{!g0:%{!g1:%{!g2: -g1}}}}} \
 %{mips1:-mfp32 -mgp32}%{mips2:-mfp32 -mgp32}%{mips3:-mfp64 -mgp64} \
-%{G*} \
+%{G*} %{EB:-meb} %{EL:-mel} %{EB:%{EL:%emay not use both -EB and -EL}} \
 %{pic-none:   -mno-half-pic} \
 %{pic-lib:    -mhalf-pic} \
 %{pic-extern: -mhalf-pic} \
@@ -669,7 +684,9 @@ while (0)
 %{!.S:%{!.s:	-D__LANGUAGE_C -D_LANGUAGE_C %{!ansi:-DLANGUAGE_C}}} \
 %{mlong64:-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int} \
 %{!mlong64:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
-%{mips3:-U__mips -D__mips=3}"
+%{mips3:-U__mips -D__mips=3} \
+%{EB:-UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ -D_MIPSEB -D__MIPSEB -D__MIPSEB__ %{!ansi:-DMIPSEB}} \
+%{EL:-UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ -D_MIPSEL -D__MIPSEL -D__MIPSEL__ %{!ansi:-DMIPSEL}}"
 #endif
 
 /* If defined, this macro is an additional prefix to try after
@@ -900,39 +917,27 @@ do {							\
 
 /* Target machine storage layout */
 
+/* Define in order to support both big and little endian float formats
+   in the same gcc binary.  */
+#define REAL_ARITHMETIC
+
 /* Define this if most significant bit is lowest numbered
    in instructions that operate on numbered bit-fields.
 */
 #define BITS_BIG_ENDIAN 0
 
 /* Define this if most significant byte of a word is the lowest numbered. */
-#ifndef BYTES_BIG_ENDIAN
-#ifndef DECSTATION
-#define BYTES_BIG_ENDIAN 1
-#else
-#define BYTES_BIG_ENDIAN 0
-#endif
-#endif
+#define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0)
 
 /* Define this if most significant word of a multiword number is the lowest. */
-#ifndef WORDS_BIG_ENDIAN
-#ifndef DECSTATION
-#define WORDS_BIG_ENDIAN 1
-#else
-#define WORDS_BIG_ENDIAN 0
-#endif
-#endif
-
-/* Define macros to easily access the most and least significant words
-   without a lot of #ifdef's.  */
-
-#if WORDS_BIG_ENDIAN
-#define MOST_SIGNIFICANT_WORD	0
-#define LEAST_SIGNIFICANT_WORD	1
+#define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0)
 
+/* Define this to set the endianness to use in libgcc2.c, which can
+   not depend on target_flags.  */
+#if !defined(MIPSEL) && !defined(__MIPSEL__)
+#define LIBGCC2_WORDS_BIG_ENDIAN 1
 #else
-#define MOST_SIGNIFICANT_WORD	1
-#define LEAST_SIGNIFICANT_WORD	0
+#define LIBGCC2_WORDS_BIG_ENDIAN 0
 #endif
 
 /* Number of bits in an addressable storage unit */
@@ -2602,9 +2607,13 @@ while (0)
     return COSTS_N_INSNS (SYMBOL_REF_FLAG (X) ? 1 : 2);			\
 									\
   case CONST_DOUBLE:							\
-    return COSTS_N_INSNS ((CONST_DOUBLE_HIGH (X) == 0			\
-			   && CONST_DOUBLE_LOW (X)) ? 2 : 4);
-
+    {									\
+      rtx high, low;							\
+      split_double (X, &high, &low);					\
+      return COSTS_N_INSNS ((high == CONST0_RTX (GET_MODE (high))	\
+			     || low == CONST0_RTX (GET_MODE (low)))	\
+			    ? 2 : 4);					\
+    }
 
 /* Like `CONST_COSTS' but applies to nonconstant RTL expressions.
    This can be used, for example, to indicate how costly a multiply
diff --git a/gcc/config/mips/osfrose.h b/gcc/config/mips/osfrose.h
index e41f92a..3263e96 100644
--- a/gcc/config/mips/osfrose.h
+++ b/gcc/config/mips/osfrose.h
@@ -80,7 +80,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 %{!.S:%{!.s:	-D__LANGUAGE_C__  -D__LANGUAGE_C %{!ansi:-DLANGUAGE_C}}} \
 %{mlong64:-D__PTRDIFF_TYPE__=long\\ int} \
 %{!mlong64:-D__PTRDIFF_TYPE__=int} \
-%{mips3:-U__mips -D__mips=3}"
+%{mips3:-U__mips -D__mips=3} \
+%{EB:-UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ -D_MIPSEB -D__MIPSEB -D__MIPSEB__ %{!ansi:-DMIPSEB}} \
+%{EL:-UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ -D_MIPSEL -D__MIPSEL -D__MIPSEL__ %{!ansi:-DMIPSEL}}"
 
 /* ??? This assumes that GNU as is always used with GNU ld, and MIPS as is
    always used with MIPS ld.  */
diff --git a/gcc/config/mips/t-mips b/gcc/config/mips/t-mips
index ad90c01..f1915c8 100644
--- a/gcc/config/mips/t-mips
+++ b/gcc/config/mips/t-mips
@@ -6,3 +6,10 @@
 # and does not need anything from libgcc1.a.
 LIBGCC1 = libgcc1.null
 CROSS_LIBGCC1 = libgcc1.null
+
+MULTILIB_OPTIONS=EL/EB
+MULTILIB_DIRNAMES=el eb
+MULTILIB_MATCHES=
+
+LIBGCC = stmp-multilib
+INSTALL_LIBGCC = install-multilib
diff --git a/gcc/config/mips/t-mips-gas b/gcc/config/mips/t-mips-gas
index 62b481b..69d82f1 100644
--- a/gcc/config/mips/t-mips-gas
+++ b/gcc/config/mips/t-mips-gas
@@ -2,3 +2,10 @@
 # and does not need anything from libgcc1.a.
 LIBGCC1 = libgcc1.null
 CROSS_LIBGCC1 = libgcc1.null
+
+MULTILIB_OPTIONS=EL/EB
+MULTILIB_DIRNAMES=el eb
+MULTILIB_MATCHES=
+
+LIBGCC = stmp-multilib
+INSTALL_LIBGCC = install-multilib