+/* Base configuration file for all NetBSD targets.
+ Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+ 2007 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+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 3, or (at your option)
+any later version.
+
+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 GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+/* TARGET_OS_CPP_BUILTINS() common to all NetBSD targets. */
+#define NETBSD_OS_CPP_BUILTINS_COMMON() \
+ do \
+ { \
+ builtin_define ("__NetBSD__"); \
+ builtin_define ("__unix__"); \
+ builtin_assert ("system=bsd"); \
+ builtin_assert ("system=unix"); \
+ builtin_assert ("system=NetBSD"); \
+ } \
+ while (0)
+
+/* CPP_SPEC parts common to all NetBSD targets. */
+#define NETBSD_CPP_SPEC \
+ "%{posix:-D_POSIX_SOURCE} \
+ %{pthread:-D_REENTRANT -D_PTHREADS}"
+
/* NETBSD_NATIVE is defined when gcc is integrated into the NetBSD
source tree so it can be configured appropriately without using
- the GNU configure/build mechanism. */
+ the GNU configure/build mechanism. */
#ifdef NETBSD_NATIVE
#endif /* NETBSD_NATIVE */
-/* Provide a CPP_SPEC appropriate for NetBSD. Currently we just deal with
- the GCC option `-posix'. */
+/* Provide a LIB_SPEC appropriate for NetBSD. Here we:
-#undef CPP_SPEC
-#define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE}"
+ 1. Select the appropriate set of libs, depending on whether we're
+ profiling.
+ 2. Include the pthread library if -pthread is specified (only
+ if threads are enabled).
-/* Provide a LIB_SPEC appropriate for NetBSD. Just select the appropriate
- libc, depending on whether we're doing profiling; if `-posix' is specified,
- link against the appropriate libposix first. Don't include libc when
- linking a shared library. */
+ 3. Include the posix library if -posix is specified.
-#undef LIB_SPEC
-#define LIB_SPEC \
+ FIXME: Could eliminate the duplication here if we were allowed to
+ use string concatenation. */
+
+#ifdef NETBSD_ENABLE_PTHREADS
+#define NETBSD_LIB_SPEC \
+ "%{pthread: \
+ %{!p: \
+ %{!pg:-lpthread}} \
+ %{p:-lpthread_p} \
+ %{pg:-lpthread_p}} \
+ %{posix: \
+ %{!p: \
+ %{!pg:-lposix}} \
+ %{p:-lposix_p} \
+ %{pg:-lposix_p}} \
+ %{!shared: \
+ %{!symbolic: \
+ %{!p: \
+ %{!pg:-lc}} \
+ %{p:-lc_p} \
+ %{pg:-lc_p}}}"
+#else
+#define NETBSD_LIB_SPEC \
"%{posix: \
%{!p: \
%{!pg:-lposix}} \
%{!pg:-lc}} \
%{p:-lc_p} \
%{pg:-lc_p}}}"
+#endif
+
+#undef LIB_SPEC
+#define LIB_SPEC NETBSD_LIB_SPEC
/* Provide a LIBGCC_SPEC appropriate for NetBSD. We also want to exclude
libgcc with -symbolic. */
-#undef LIBGCC_SPEC
#ifdef NETBSD_NATIVE
-#define LIBGCC_SPEC \
+#define NETBSD_LIBGCC_SPEC \
"%{!symbolic: \
%{!shared: \
%{!p: \
- %{!pg: -lgcc}}} \
+ %{!pg: -lgcc}}} \
%{shared: -lgcc_pic} \
%{p: -lgcc_p} \
%{pg: -lgcc_p}}"
#else
-#define LIBGCC_SPEC "%{!shared:%{!symbolic: -lgcc}}"
+#define NETBSD_LIBGCC_SPEC "%{!shared:%{!symbolic: -lgcc}}"
#endif
+#undef LIBGCC_SPEC
+#define LIBGCC_SPEC NETBSD_LIBGCC_SPEC
+
/* When building shared libraries, the initialization and finalization
functions for the library are .init and .fini respectively. */
fprintf ((STREAM), "void __fini() {\n\t%s();\n}\n", (FUNC)); \
} while (0)
-/* Allow #sccs in preprocessor. */
-
-#undef SCCS_DIRECTIVE
-#define SCCS_DIRECTIVE
-
-#undef TARGET_HAS_F_SETLKW
-#define TARGET_HAS_F_SETLKW
-
-/* Implicit library calls should use memcpy, not bcopy, etc. */
-
-#undef TARGET_MEM_FUNCTIONS
-#define TARGET_MEM_FUNCTIONS 1
+#undef TARGET_POSIX_IO
+#define TARGET_POSIX_IO
/* Handle #pragma weak and #pragma pack. */
-#define HANDLE_SYSV_PRAGMA
+#define HANDLE_SYSV_PRAGMA 1
+/* Don't assume anything about the header files. */
+#undef NO_IMPLICIT_EXTERN_C
+#define NO_IMPLICIT_EXTERN_C 1
/* Define some types that are the same on all NetBSD platforms,
making them agree with <machine/ansi.h>. */
#undef WINT_TYPE
#define WINT_TYPE "int"
+\f
+
+/* Attempt to turn on execute permission for the stack. This may be
+ used by INITIALIZE_TRAMPOLINE of the target needs it (that is,
+ if the target machine can change execute permissions on a page).
+
+ There is no way to query the execute permission of the stack, so
+ we always issue the mprotect() call.
+
+ Note that we go out of our way to use namespace-non-invasive calls
+ here. Unfortunately, there is no libc-internal name for mprotect().
+
+ Also note that no errors should be emitted by this code; it is considered
+ dangerous for library calls to send messages to stdout/stderr. */
+
+#define NETBSD_ENABLE_EXECUTE_STACK \
+extern void __enable_execute_stack (void *); \
+void \
+__enable_execute_stack (void *addr) \
+{ \
+ extern int mprotect (void *, size_t, int); \
+ extern int __sysctl (int *, unsigned int, void *, size_t *, \
+ void *, size_t); \
+ \
+ static int size; \
+ static long mask; \
+ \
+ char *page, *end; \
+ \
+ if (size == 0) \
+ { \
+ int mib[2]; \
+ size_t len; \
+ \
+ mib[0] = 6; /* CTL_HW */ \
+ mib[1] = 7; /* HW_PAGESIZE */ \
+ len = sizeof (size); \
+ (void) __sysctl (mib, 2, &size, &len, NULL, 0); \
+ mask = ~((long) size - 1); \
+ } \
+ \
+ page = (char *) (((long) addr) & mask); \
+ end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
+ \
+ /* 7 == PROT_READ | PROT_WRITE | PROT_EXEC */ \
+ (void) mprotect (page, end - page, 7); \
+}
+
+/* Define this so we can compile MS code for use with WINE. */
+#define HANDLE_PRAGMA_PACK_PUSH_POP 1
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