/* Definitions of target machine for GNU compiler,
for Alpha Linux-based GNU systems.
- Copyright (C) 1996, 1997, 1998, 2002, 2003, 2004, 2005, 2006, 2007, 2009,
- 2010 Free Software Foundation, Inc.
+ Copyright (C) 1996-2020 Free Software Foundation, Inc.
Contributed by Richard Henderson.
This file is part of GCC.
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
-#undef TARGET_DEFAULT
-#define TARGET_DEFAULT (MASK_FPREGS | MASK_GAS)
-
#define TARGET_OS_CPP_BUILTINS() \
do { \
builtin_define ("__gnu_linux__"); \
#ifdef SINGLE_LIBC
#define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
+#define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+#define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#undef OPTION_MUSL
+#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
#else
#define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
+#define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+#define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
+#undef OPTION_MUSL
+#define OPTION_MUSL (linux_libc == LIBC_MUSL)
#endif
-/* Determine whether the entire c99 runtime is present in the
- runtime library. */
-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
-
-/* Whether we have sincos that follows the GNU extension. */
-#define TARGET_HAS_SINCOS (OPTION_GLIBC)
+/* Determine what functions are present at the runtime;
+ this includes full c99 runtime and sincos. */
+#undef TARGET_LIBC_HAS_FUNCTION
+#define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function
#define TARGET_POSIX_IO
+/* Provide a STARTFILE_SPEC appropriate for ELF. Here we add the
+ (even more) magical crtbegin.o file which provides part of the
+ support for getting C++ file-scope static object constructed
+ before entering `main'. */
+
+#undef STARTFILE_SPEC
+#ifdef HAVE_LD_PIE
+#define STARTFILE_SPEC \
+ "%{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\
+ crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
+#else
+#define STARTFILE_SPEC \
+ "%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}}\
+ crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
+#endif
+
+/* Provide a ENDFILE_SPEC appropriate for ELF. Here we tack on the
+ magical crtend.o file which provides part of the support for
+ getting C++ file-scope static object constructed before entering
+ `main', followed by a normal ELF "finalizer" file, `crtn.o'. */
+
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC \
+ "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
+ %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
+
#define LINK_GCC_C_SEQUENCE_SPEC \
- "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
+ "%{static|static-pie:--start-group} %G %{!nolibc:%L} \
+ %{static|static-pie:--end-group}%{!static:%{!static-pie:%G}}"
/* Use --as-needed -lgcc_s for eh support. */
#ifdef HAVE_LD_AS_NEEDED
#define USE_LD_AS_NEEDED 1
#endif
-#define MD_UNWIND_SUPPORT "config/alpha/linux-unwind.h"
-
/* Define if long doubles should be mangled as 'g'. */
#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING