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/* Base configuration file for all NetBSD targets.
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
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, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* TARGET_OS_CPP_BUILTINS() common to all NetBSD targets. */
#define NETBSD_OS_CPP_BUILTINS_COMMON() \
do \
{ \
builtin_define ("__NetBSD__"); \
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_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
/* Handle #pragma weak and #pragma pack. */
#define HANDLE_SYSV_PRAGMA 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 TRANSFER_FROM_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 (addr) \
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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