re PR target/24837 (move dynamic linker names out of LINK_SPEC and into new DYNAMIC_L...

[gcc.git] / gcc / config / sparc / linux.h

diff --git a/gcc/config/sparc/linux.h b/gcc/config/sparc/linux.h
index 788b1433dc34884e9c417042f143dce37d011103..5af67a6a34d9b49b308c38423119f4d48df2153f 100644 (file)
--- a/gcc/config/sparc/linux.h
+++ b/gcc/config/sparc/linux.h
@@ -1,5 +1,5 @@
 /* Definitions for SPARC running Linux-based GNU systems with ELF.
-   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004
+   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005, 2006
    Free Software Foundation, Inc.
    Contributed by Eddie C. Dost (ecd@skynet.be)
 
@@ -17,18 +17,20 @@ 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.  */
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA.  */
 
 #define TARGET_OS_CPP_BUILTINS()               \
   do                                           \
     {                                          \
-       builtin_define_std ("unix");            \
-       builtin_define_std ("linux");           \
-       builtin_define ("__gnu_linux__");       \
-       builtin_assert ("system=linux");        \
-       builtin_assert ("system=unix");         \
-       builtin_assert ("system=posix");        \
+      builtin_define_std ("unix");             \
+      builtin_define_std ("linux");            \
+      builtin_define ("__gnu_linux__");                \
+      builtin_assert ("system=linux");         \
+      builtin_assert ("system=unix");          \
+      builtin_assert ("system=posix");         \
+      if (TARGET_LONG_DOUBLE_128)              \
+       builtin_define ("__LONG_DOUBLE_128__"); \
     }                                          \
   while (0)
 
@@ -81,11 +83,6 @@ Boston, MA 02111-1307, USA.  */
 #undef TARGET_VERSION
 #define TARGET_VERSION fprintf (stderr, " (sparc GNU/Linux with ELF)");
 
-#undef SUBTARGET_SWITCHES
-#define SUBTARGET_SWITCHES \
-{"long-double-64", -MASK_LONG_DOUBLE_128, N_("Use 64 bit long doubles") }, \
-{"long-double-128", MASK_LONG_DOUBLE_128, N_("Use 128 bit long doubles") },
-
 #undef SIZE_TYPE
 #define SIZE_TYPE "unsigned int"
  
@@ -100,8 +97,7 @@ Boston, MA 02111-1307, USA.  */
 
 #undef CPP_SUBTARGET_SPEC
 #define CPP_SUBTARGET_SPEC \
-"%{fPIC|fPIE|fpic|fpie:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
-%{pthread:-D_REENTRANT} %{mlong-double-128:-D__LONG_DOUBLE_128__}"
+"%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
 
 #undef LIB_SPEC
 #define LIB_SPEC \
@@ -125,6 +121,17 @@ Boston, MA 02111-1307, USA.  */
 
 /* If ELF is the default format, we should not use /lib/elf.  */
 
+#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
+#if UCLIBC_DEFAULT
+#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}"
+#else
+#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}"
+#endif
+#define LINUX_DYNAMIC_LINKER \
+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
+
+
 #undef  LINK_SPEC
 #define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
   %{!mno-relax:%{!r:-relax}} \
@@ -132,7 +139,7 @@ Boston, MA 02111-1307, USA.  */
     %{!ibcs: \
       %{!static: \
         %{rdynamic:-export-dynamic} \
-        %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \
+        %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \
         %{static:-static}}}"
 
 /* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
@@ -161,13 +168,6 @@ do {                                                                       \
 #undef  LOCAL_LABEL_PREFIX
 #define LOCAL_LABEL_PREFIX  "."
 
-/* This is how to output a reference to an internal numbered label where
-   PREFIX is the class of label and NUM is the number within the class.  */
-
-#undef  ASM_OUTPUT_INTERNAL_LABELREF
-#define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM)  \
-  fprintf (FILE, ".L%s%d", PREFIX, NUM)
-
 /* This is how to store into the string LABEL
    the symbol_ref name of an internal numbered label where
    PREFIX is the class of label and NUM is the number within the class.
@@ -211,13 +211,11 @@ do {                                                                      \
 #undef CTORS_SECTION_ASM_OP
 #undef DTORS_SECTION_ASM_OP
 
-#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
-
-/* Determine whether the the entire c99 runtime is present in the
+/* Determine whether the entire c99 runtime is present in the
    runtime library.  */
-#define TARGET_C99_FUNCTIONS 1
+#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
 
-#define TARGET_HAS_F_SETLKW
+#define TARGET_POSIX_IO
 
 #undef LINK_GCC_C_SEQUENCE_SPEC
 #define LINK_GCC_C_SEQUENCE_SPEC \
@@ -229,3 +227,20 @@ do {                                                                       \
 #endif
 
 #define MD_UNWIND_SUPPORT "config/sparc/linux-unwind.h"
+
+/* Linux currently uses RMO in uniprocessor mode, which is equivalent to
+   TMO, and TMO in multiprocessor mode.  But they reserve the right to
+   change their minds.  */
+#undef SPARC_RELAXED_ORDERING
+#define SPARC_RELAXED_ORDERING true
+
+#undef NEED_INDICATE_EXEC_STACK
+#define NEED_INDICATE_EXEC_STACK 1
+
+#ifdef TARGET_LIBC_PROVIDES_SSP
+/* sparc glibc provides __stack_chk_guard in [%g7 + 0x14].  */
+#define TARGET_THREAD_SSP_OFFSET       0x14
+#endif
+
+/* Define if long doubles should be mangled as 'g'.  */
+#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING