libgcc/

* config.host: Match little-endian powerpc-linux. gcc/ * config.gcc: Support little-endian powerpc-linux targets. * config/rs6000/linux.h (LINK_OS_LINUX_EMUL): Define. (LINK_OS_LINUX_SPEC): Define. * config/rs6000/linuxspe.h (TARGET_DEFAULT): Preserve MASK_LITTLE_ENDIAN. * config/rs6000/default64.h (TARGET_DEFAULT): Likewise. * config/rs6000/linuxaltivec.h (TARGET_DEFAULT): Likewise. * config/rs6000/linux64.h (OPTION_LITTLE_ENDIAN): Don't zero. (LINK_OS_LINUX_EMUL32, LINK_OS_LINUX_EMUL64): Define. (LINK_OS_LINUX_SPEC32, LINK_OS_LINUX_SPEC64): Use above. * config/rs6000/rs6000.c (output_toc): Don't use .tc for TARGET_ELF. Correct fp word order for little-endian. Don't shift toc entries smaller than a word for little-endian. * config/rs6000/rs6000.md (bswaphi2, bswapsi2 split): Comment. (bswapdi2 splits): Correct low-part subreg for little-endian. Remove wrong BYTES_BIG_ENDIAN tests, and rename vars to remove low/high where such is correct only for be. * config/rs6000/sysv4.h (SUBTARGET_OVERRIDE_OPTIONS): Allow little-endian for -mcall-aixdesc. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@198273 138bc75d-0d04-0410-961f-82ee72b054a4
jonanova · Apr 25, 2013 · d80dc92 · d80dc92
1 parent d04c855
commit d80dc92
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diff --git a/gcc/ChangeLog b/gcc/ChangeLog
@@ -1,3 +1,25 @@
+2013-04-25  Alan Modra  <amodra@gmail.com>
+
+	* config.gcc: Support little-endian powerpc-linux targets.
+	* config/rs6000/linux.h (LINK_OS_LINUX_EMUL): Define.
+	(LINK_OS_LINUX_SPEC): Define.
+	* config/rs6000/linuxspe.h (TARGET_DEFAULT):
+	Preserve MASK_LITTLE_ENDIAN.
+	* config/rs6000/default64.h (TARGET_DEFAULT): Likewise.
+	* config/rs6000/linuxaltivec.h (TARGET_DEFAULT): Likewise.
+	* config/rs6000/linux64.h (OPTION_LITTLE_ENDIAN): Don't zero.
+	(LINK_OS_LINUX_EMUL32, LINK_OS_LINUX_EMUL64): Define.
+	(LINK_OS_LINUX_SPEC32, LINK_OS_LINUX_SPEC64): Use above.
+	* config/rs6000/rs6000.c (output_toc): Don't use .tc for TARGET_ELF.
+	Correct fp word order for little-endian.  Don't shift toc entries
+	smaller than a word for little-endian.
+	* config/rs6000/rs6000.md (bswaphi2, bswapsi2 split): Comment.
+	(bswapdi2 splits): Correct low-part subreg for little-endian.
+	Remove wrong BYTES_BIG_ENDIAN tests, and rename vars to remove
+	low/high where such is correct only for be.
+	* config/rs6000/sysv4.h (SUBTARGET_OVERRIDE_OPTIONS): Allow
+	little-endian for -mcall-aixdesc.
+
 2013-04-25  Alan Modra  <amodra@gmail.com>
 
 	* config/rs6000/rs6000.c (rs6000_secondary_reload_inner): Use

diff --git a/gcc/config.gcc b/gcc/config.gcc
@@ -2086,20 +2086,24 @@ powerpc-*-rtems*)
 	extra_options="${extra_options} rs6000/sysv4.opt"
 	tmake_file="rs6000/t-fprules rs6000/t-rtems t-rtems rs6000/t-ppccomm"
 	;;
-powerpc-*-linux* | powerpc64-*-linux*)
+powerpc*-*-linux*)
 	tm_file="${tm_file} dbxelf.h elfos.h freebsd-spec.h rs6000/sysv4.h"
 	extra_options="${extra_options} rs6000/sysv4.opt"
 	tmake_file="rs6000/t-fprules rs6000/t-ppcos ${tmake_file} rs6000/t-ppccomm"
+	case ${target} in
+	    powerpc*le-*-*)
+	    tm_file="${tm_file} rs6000/sysv4le.h" ;;
+	esac
 	maybe_biarch=yes
 	case ${target} in
-	    powerpc64-*-linux*spe* | powerpc64-*-linux*paired*)
+	    powerpc64*-*-linux*spe* | powerpc64*-*-linux*paired*)
 	    	echo "*** Configuration ${target} not supported" 1>&2
 		exit 1
 		;;
-	    powerpc-*-linux*spe* | powerpc-*-linux*paired*)
+	    powerpc*-*-linux*spe* | powerpc*-*-linux*paired*)
 		maybe_biarch=
 		;;
-	    powerpc64-*-linux*)
+	    powerpc64*-*-linux*)
 	    	test x$with_cpu != x || cpu_is_64bit=yes
 		maybe_biarch=always
 		;;

diff --git a/gcc/config/rs6000/default64.h b/gcc/config/rs6000/default64.h
@@ -18,5 +18,10 @@ 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/>.  */
 
+#if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT (MASK_PPC_GFXOPT | MASK_POWERPC64 | MASK_64BIT | MASK_LITTLE_ENDIAN)
+#else
 #undef TARGET_DEFAULT
 #define TARGET_DEFAULT (MASK_PPC_GFXOPT | MASK_POWERPC64 | MASK_64BIT)
+#endif
diff --git a/gcc/config/rs6000/linux.h b/gcc/config/rs6000/linux.h
@@ -79,6 +79,17 @@
 #undef	LINK_OS_DEFAULT_SPEC
 #define LINK_OS_DEFAULT_SPEC "%(link_os_linux)"
 
+#if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+#define LINK_OS_LINUX_EMUL "%{!mbig: %{!mbig-endian: -m elf32lppclinux}}%{mbig|mbig-endian: -m elf32ppclinux}"
+#else
+#define LINK_OS_LINUX_EMUL "%{!mlittle: %{!mlittle-endian: -m elf32ppclinux}}%{mlittle|mlittle-endian: -m elf32lppclinux}"
+#endif
+
+#undef LINK_OS_LINUX_SPEC
+#define LINK_OS_LINUX_SPEC LINK_OS_LINUX_EMUL " %{!shared: %{!static: \
+  %{rdynamic:-export-dynamic} \
+  -dynamic-linker " GNU_USER_DYNAMIC_LINKER "}}"
+
 #define LINK_GCC_C_SEQUENCE_SPEC \
   "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
 

diff --git a/gcc/config/rs6000/linux64.h b/gcc/config/rs6000/linux64.h
@@ -212,10 +212,6 @@ extern int dot_symbols;
 
 #ifndef RS6000_BI_ARCH
 
-/* 64-bit PowerPC Linux is always big-endian.  */
-#undef	OPTION_LITTLE_ENDIAN
-#define OPTION_LITTLE_ENDIAN	0
-
 /* 64-bit PowerPC Linux always has a TOC.  */
 #undef  TARGET_TOC
 #define	TARGET_TOC		1
@@ -376,12 +372,19 @@ extern int dot_symbols;
 #define GNU_USER_DYNAMIC_LINKER64 \
   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
 
+#if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+#define LINK_OS_LINUX_EMUL32 "%{!mbig: %{!mbig-endian: -m elf32lppclinux}}%{mbig|mbig-endian: -m elf32ppclinux}"
+#define LINK_OS_LINUX_EMUL64 "%{!mbig: %{!mbig-endian: -m elf64lppc}}%{mbig|mbig-endian: -m elf64ppc}"
+#else
+#define LINK_OS_LINUX_EMUL32 "%{!mlittle: %{!mlittle-endian: -m elf32ppclinux}}%{mlittle|mlittle-endian: -m elf32lppclinux}"
+#define LINK_OS_LINUX_EMUL64 "%{!mlittle: %{!mlittle-endian: -m elf64ppc}}%{mlittle|mlittle-endian: -m elf64lppc}"
+#endif
 
-#define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
+#define LINK_OS_LINUX_SPEC32 LINK_OS_LINUX_EMUL32 " %{!shared: %{!static: \
   %{rdynamic:-export-dynamic} \
   -dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "}}"
 
-#define LINK_OS_LINUX_SPEC64 "-m elf64ppc %{!shared: %{!static: \
+#define LINK_OS_LINUX_SPEC64 LINK_OS_LINUX_EMUL64 " %{!shared: %{!static: \
   %{rdynamic:-export-dynamic} \
   -dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "}}"
 

diff --git a/gcc/config/rs6000/linuxaltivec.h b/gcc/config/rs6000/linuxaltivec.h
@@ -20,8 +20,13 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Override rs6000.h and sysv4.h definition.  */
+#if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+#undef	TARGET_DEFAULT
+#define	TARGET_DEFAULT (MASK_ALTIVEC | MASK_LITTLE_ENDIAN)
+#else
 #undef	TARGET_DEFAULT
 #define	TARGET_DEFAULT MASK_ALTIVEC
+#endif
 
 #undef  SUBSUBTARGET_OVERRIDE_OPTIONS
 #define SUBSUBTARGET_OVERRIDE_OPTIONS rs6000_altivec_abi = 1
diff --git a/gcc/config/rs6000/linuxspe.h b/gcc/config/rs6000/linuxspe.h
@@ -20,8 +20,13 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Override rs6000.h and sysv4.h definition.  */
+#if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+#undef	TARGET_DEFAULT
+#define TARGET_DEFAULT (MASK_STRICT_ALIGN | MASK_LITTLE_ENDIAN)
+#else
 #undef	TARGET_DEFAULT
 #define TARGET_DEFAULT MASK_STRICT_ALIGN
+#endif
 
 #undef  ASM_DEFAULT_SPEC
 #define	ASM_DEFAULT_SPEC "-mppc -mspe -me500"
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
@@ -22408,20 +22408,22 @@ output_toc (FILE *file, rtx x, int labelno, enum machine_mode mode)
 
       if (TARGET_64BIT)
 	{
-	  if (TARGET_MINIMAL_TOC)
+	  if (TARGET_ELF || TARGET_MINIMAL_TOC)
 	    fputs (DOUBLE_INT_ASM_OP, file);
 	  else
 	    fprintf (file, "\t.tc FT_%lx_%lx_%lx_%lx[TC],",
 		     k[0] & 0xffffffff, k[1] & 0xffffffff,
 		     k[2] & 0xffffffff, k[3] & 0xffffffff);
 	  fprintf (file, "0x%lx%08lx,0x%lx%08lx\n",
-		   k[0] & 0xffffffff, k[1] & 0xffffffff,
-		   k[2] & 0xffffffff, k[3] & 0xffffffff);
+		   k[WORDS_BIG_ENDIAN ? 0 : 1] & 0xffffffff,
+		   k[WORDS_BIG_ENDIAN ? 1 : 0] & 0xffffffff,
+		   k[WORDS_BIG_ENDIAN ? 2 : 3] & 0xffffffff,
+		   k[WORDS_BIG_ENDIAN ? 3 : 2] & 0xffffffff);
 	  return;
 	}
       else
 	{
-	  if (TARGET_MINIMAL_TOC)
+	  if (TARGET_ELF || TARGET_MINIMAL_TOC)
 	    fputs ("\t.long ", file);
 	  else
 	    fprintf (file, "\t.tc FT_%lx_%lx_%lx_%lx[TC],",
@@ -22448,18 +22450,19 @@ output_toc (FILE *file, rtx x, int labelno, enum machine_mode mode)
 
       if (TARGET_64BIT)
 	{
-	  if (TARGET_MINIMAL_TOC)
+	  if (TARGET_ELF || TARGET_MINIMAL_TOC)
 	    fputs (DOUBLE_INT_ASM_OP, file);
 	  else
 	    fprintf (file, "\t.tc FD_%lx_%lx[TC],",
 		     k[0] & 0xffffffff, k[1] & 0xffffffff);
 	  fprintf (file, "0x%lx%08lx\n",
-		   k[0] & 0xffffffff, k[1] & 0xffffffff);
+		   k[WORDS_BIG_ENDIAN ? 0 : 1] & 0xffffffff,
+		   k[WORDS_BIG_ENDIAN ? 1 : 0] & 0xffffffff);
 	  return;
 	}
       else
 	{
-	  if (TARGET_MINIMAL_TOC)
+	  if (TARGET_ELF || TARGET_MINIMAL_TOC)
 	    fputs ("\t.long ", file);
 	  else
 	    fprintf (file, "\t.tc FD_%lx_%lx[TC],",
@@ -22483,7 +22486,7 @@ output_toc (FILE *file, rtx x, int labelno, enum machine_mode mode)
 
       if (TARGET_64BIT)
 	{
-	  if (TARGET_MINIMAL_TOC)
+	  if (TARGET_ELF || TARGET_MINIMAL_TOC)
 	    fputs (DOUBLE_INT_ASM_OP, file);
 	  else
 	    fprintf (file, "\t.tc FS_%lx[TC],", l & 0xffffffff);
@@ -22492,7 +22495,7 @@ output_toc (FILE *file, rtx x, int labelno, enum machine_mode mode)
 	}
       else
 	{
-	  if (TARGET_MINIMAL_TOC)
+	  if (TARGET_ELF || TARGET_MINIMAL_TOC)
 	    fputs ("\t.long ", file);
 	  else
 	    fprintf (file, "\t.tc FS_%lx[TC],", l & 0xffffffff);
@@ -22524,9 +22527,8 @@ output_toc (FILE *file, rtx x, int labelno, enum machine_mode mode)
 	}
 #endif
 
-      /* TOC entries are always Pmode-sized, but since this
-	 is a bigendian machine then if we're putting smaller
-	 integer constants in the TOC we have to pad them.
+      /* TOC entries are always Pmode-sized, so when big-endian
+	 smaller integer constants in the TOC need to be padded.
 	 (This is still a win over putting the constants in
 	 a separate constant pool, because then we'd have
 	 to have both a TOC entry _and_ the actual constant.)
@@ -22537,7 +22539,7 @@ output_toc (FILE *file, rtx x, int labelno, enum machine_mode mode)
       /* It would be easy to make this work, but it doesn't now.  */
       gcc_assert (!TARGET_64BIT || POINTER_SIZE >= GET_MODE_BITSIZE (mode));
 
-      if (POINTER_SIZE > GET_MODE_BITSIZE (mode))
+      if (WORDS_BIG_ENDIAN && POINTER_SIZE > GET_MODE_BITSIZE (mode))
 	{
 #if HOST_BITS_PER_WIDE_INT == 32
 	  lshift_double (low, high, POINTER_SIZE - GET_MODE_BITSIZE (mode),
@@ -22552,7 +22554,7 @@ output_toc (FILE *file, rtx x, int labelno, enum machine_mode mode)
 
       if (TARGET_64BIT)
 	{
-	  if (TARGET_MINIMAL_TOC)
+	  if (TARGET_ELF || TARGET_MINIMAL_TOC)
 	    fputs (DOUBLE_INT_ASM_OP, file);
 	  else
 	    fprintf (file, "\t.tc ID_%lx_%lx[TC],",
@@ -22565,7 +22567,7 @@ output_toc (FILE *file, rtx x, int labelno, enum machine_mode mode)
 	{
 	  if (POINTER_SIZE < GET_MODE_BITSIZE (mode))
 	    {
-	      if (TARGET_MINIMAL_TOC)
+	      if (TARGET_ELF || TARGET_MINIMAL_TOC)
 		fputs ("\t.long ", file);
 	      else
 		fprintf (file, "\t.tc ID_%lx_%lx[TC],",
@@ -22575,7 +22577,7 @@ output_toc (FILE *file, rtx x, int labelno, enum machine_mode mode)
 	    }
 	  else
 	    {
-	      if (TARGET_MINIMAL_TOC)
+	      if (TARGET_ELF || TARGET_MINIMAL_TOC)
 		fputs ("\t.long ", file);
 	      else
 		fprintf (file, "\t.tc IS_%lx[TC],", (long) low & 0xffffffff);
@@ -22613,7 +22615,7 @@ output_toc (FILE *file, rtx x, int labelno, enum machine_mode mode)
       gcc_unreachable ();
     }
 
-  if (TARGET_MINIMAL_TOC)
+  if (TARGET_ELF || TARGET_MINIMAL_TOC)
     fputs (TARGET_32BIT ? "\t.long " : DOUBLE_INT_ASM_OP, file);
   else
     {