/* Definitions of target machine for GNU compiler,
for Alpha Linux-based GNU systems.
- Copyright (C) 1996, 1997, 1998, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1996-2020 Free Software Foundation, Inc.
Contributed by Richard Henderson.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-#undef TARGET_DEFAULT
-#define TARGET_DEFAULT (MASK_FP | MASK_FPREGS | MASK_GAS)
-
-#undef CPP_PREDEFINES
-#define CPP_PREDEFINES \
- "-Dgnu_linux -Dlinux -Dunix -Asystem=linux -D_LONGLONG -D__alpha__"
-
-/* The GNU C++ standard library requires that these macros be defined. */
-#undef CPLUSPLUS_CPP_SPEC
-#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#define TARGET_OS_CPP_BUILTINS() \
+ do { \
+ builtin_define ("__gnu_linux__"); \
+ builtin_define ("_LONGLONG"); \
+ builtin_define_std ("linux"); \
+ builtin_define_std ("unix"); \
+ builtin_assert ("system=linux"); \
+ builtin_assert ("system=unix"); \
+ builtin_assert ("system=posix"); \
+ /* The GNU C++ standard library requires this. */ \
+ if (c_dialect_cxx ()) \
+ builtin_define ("_GNU_SOURCE"); \
+ } while (0)
#undef LIB_SPEC
#define LIB_SPEC \
- "%{shared: -lc} \
- %{!shared: %{pthread:-lpthread} \
- %{profile:-lc_p} %{!profile: -lc}}"
+ "%{pthread:-lpthread} \
+ %{shared:-lc} \
+ %{!shared: %{profile:-lc_p}%{!profile:-lc}}"
+
+#undef CPP_SPEC
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
/* Show that we need a GP when profiling. */
#undef TARGET_PROFILING_NEEDS_GP
#undef WCHAR_TYPE
#define WCHAR_TYPE "int"
-/* Define this so that all GNU/Linux targets handle the same pragmas. */
-#define HANDLE_PRAGMA_PACK_PUSH_POP
+#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
-/* Do code reading to identify a signal frame, and set the frame
- state data appropriately. See unwind-dw2.c for the structs. */
+/* 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|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
-#ifdef IN_LIBGCC2
-#include <signal.h>
-#include <sys/ucontext.h>
+/* Define if long doubles should be mangled as 'g'. */
+#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
+
+/* -mcpu=native handling only makes sense with compiler running on
+ an Alpha chip. */
+#if defined(__alpha__) || defined(__alpha)
+extern const char *host_detect_local_cpu (int argc, const char **argv);
+# define EXTRA_SPEC_FUNCTIONS \
+ { "local_cpu_detect", host_detect_local_cpu },
+
+# define MCPU_MTUNE_NATIVE_SPECS \
+ " %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}" \
+ " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
+#else
+# define MCPU_MTUNE_NATIVE_SPECS ""
#endif
-#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
- do { \
- unsigned int *pc_ = (CONTEXT)->ra; \
- struct sigcontext *sc_; \
- long new_cfa_, i_; \
- \
- if (pc_[0] != 0x47fe0410 /* mov $30,$16 */ \
- || pc_[2] != 0x00000083 /* callsys */) \
- break; \
- if (pc_[1] == 0x201f0067) /* lda $0,NR_sigreturn */ \
- sc_ = (CONTEXT)->cfa; \
- else if (pc_[1] == 0x201f015f) /* lda $0,NR_rt_sigreturn */ \
- { \
- struct rt_sigframe { \
- struct siginfo info; \
- struct ucontext uc; \
- } *rt_ = (CONTEXT)->cfa; \
- sc_ = &rt_->uc.uc_mcontext; \
- } \
- else \
- break; \
- new_cfa_ = sc_->sc_regs[30]; \
- (FS)->cfa_how = CFA_REG_OFFSET; \
- (FS)->cfa_reg = 30; \
- (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \
- for (i_ = 0; i_ < 30; ++i_) \
- { \
- (FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[i_].loc.offset \
- = (long)&sc_->sc_regs[i_] - new_cfa_; \
- } \
- for (i_ = 0; i_ < 31; ++i_) \
- { \
- (FS)->regs.reg[i_+32].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[i_+32].loc.offset \
- = (long)&sc_->sc_fpregs[i_] - new_cfa_; \
- } \
- (FS)->regs.reg[31].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[31].loc.offset = (long)&sc_->sc_pc - new_cfa_; \
- (FS)->retaddr_column = 31; \
- goto SUCCESS; \
- } while (0)
+#define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS
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