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+/* Base configuration file for all NetBSD targets.
+ Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+ 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 2, 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 COPYING. If not, write to
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
+
+/* 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. */
+
+#ifdef NETBSD_NATIVE
+
+/* Look for the include files in the system-defined places. */
+
+#undef GPLUSPLUS_INCLUDE_DIR
+#define GPLUSPLUS_INCLUDE_DIR "/usr/include/g++"
+
+#undef GCC_INCLUDE_DIR
+#define GCC_INCLUDE_DIR "/usr/include"
+
+#undef INCLUDE_DEFAULTS
+#define INCLUDE_DEFAULTS \
+ { \
+ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 }, \
+ { GCC_INCLUDE_DIR, "GCC", 0, 0 }, \
+ { 0, 0, 0, 0 } \
+ }
+
+/* Under NetBSD, the normal location of the compiler back ends is the
+ /usr/libexec directory. */
+
+#undef STANDARD_EXEC_PREFIX
+#define STANDARD_EXEC_PREFIX "/usr/libexec/"
+
+/* Under NetBSD, the normal location of the various *crt*.o files is the
+ /usr/lib directory. */
+
+#undef STANDARD_STARTFILE_PREFIX
+#define STANDARD_STARTFILE_PREFIX "/usr/lib/"
+
+#endif /* NETBSD_NATIVE */
+
+
+/* Provide a LIB_SPEC appropriate for NetBSD. Here we:
+
+ 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).
+
+ 3. Include the posix library if -posix is specified.
+
+ 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}} \
+ %{p:-lposix_p} \
+ %{pg:-lposix_p}} \
+ %{!shared: \
+ %{!symbolic: \
+ %{!p: \
+ %{!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. */
+
+#ifdef NETBSD_NATIVE
+#define NETBSD_LIBGCC_SPEC \
+ "%{!symbolic: \
+ %{!shared: \
+ %{!p: \
+ %{!pg: -lgcc}}} \
+ %{shared: -lgcc_pic} \
+ %{p: -lgcc_p} \
+ %{pg: -lgcc_p}}"
+#else
+#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. */
+
+#define COLLECT_SHARED_INIT_FUNC(STREAM,FUNC) \
+ do { \
+ fprintf ((STREAM), "void __init() __asm__ (\".init\");"); \
+ fprintf ((STREAM), "void __init() {\n\t%s();\n}\n", (FUNC)); \
+ } while (0)
+
+#define COLLECT_SHARED_FINI_FUNC(STREAM,FUNC) \
+ do { \
+ fprintf ((STREAM), "void __fini() __asm__ (\".fini\");"); \
+ fprintf ((STREAM), "void __fini() {\n\t%s();\n}\n", (FUNC)); \
+ } while (0)
+
+#undef TARGET_POSIX_IO
+#define TARGET_POSIX_IO
+
+/* Handle #pragma weak and #pragma pack. */
+
+#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 WCHAR_TYPE
+#define WCHAR_TYPE "int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+
+#undef WINT_TYPE
+#define WINT_TYPE "int"
+
+
+/* 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); \
+}
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