+/* 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
#define GCC_INCLUDE_DIR "/usr/include"
#undef INCLUDE_DEFAULTS
-#define INCLUDE_DEFAULTS \
- { \
- { GPLUSPLUS_INCLUDE_DIR, 1, 1 }, \
- { GCC_INCLUDE_DIR, 0, 0 }, \
- { 0, 0, 0 } \
+#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
#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 CPP_SPEC appropriate for NetBSD. Current we just deal with
- the GCC option `-posix'. */
-
-#undef CPP_SPEC
-#define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
-
-/* Provide an ASM_SPEC appropriate for NetBSD. Currently we only deal
- with the options for generating PIC code. */
-
-#undef ASM_SPEC
-#define ASM_SPEC " %| %{fpic:-k} %{fPIC:-k -K}"
-
-/* Provide a LIB_SPEC appropriate for NetBSD. Just select the appropriate
- libc, depending on whether we're doing profiling. */
+/* Provide a LIBGCC_SPEC appropriate for NetBSD. We also want to exclude
+ libgcc with -symbolic. */
-#undef LIB_SPEC
-#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
+#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
-/* Provide a LINK_SPEC appropriate for NetBSD. Here we provide support
- for the special GCC options -static, -assert, and -nostdlib. */
+#undef LIBGCC_SPEC
+#define LIBGCC_SPEC NETBSD_LIBGCC_SPEC
-#undef LINK_SPEC
-#define LINK_SPEC \
- "%{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{static:-Bstatic} %{assert*}"
+/* 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)
-/* We have atexit(3). */
+#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)
-#define HAVE_ATEXIT
+#undef TARGET_POSIX_IO
+#define TARGET_POSIX_IO
-/* Implicit library calls should use memcpy, not bcopy, etc. */
+/* Handle #pragma weak and #pragma pack. */
-#define TARGET_MEM_FUNCTIONS
-\f
-/*
- * Some imports from svr4.h in support of shared libraries.
- * Currently, we need the DECLARE_OBJECT_SIZE stuff.
- */
-
-/* Define the strings used for the special svr4 .type and .size directives.
- These strings generally do not vary from one system running svr4 to
- another, but if a given system (e.g. m88k running svr) needs to use
- different pseudo-op names for these, they may be overridden in the
- file which includes this one. */
-
-#undef TYPE_ASM_OP
-#undef SIZE_ASM_OP
-#undef WEAK_ASM_OP
-#define TYPE_ASM_OP ".type"
-#define SIZE_ASM_OP ".size"
-#define WEAK_ASM_OP ".weak"
-
-/* The following macro defines the format used to output the second
- operand of the .type assembler directive. Different svr4 assemblers
- expect various different forms for this operand. The one given here
- is just a default. You may need to override it in your machine-
- specific tm.h file (depending upon the particulars of your assembler). */
-
-#undef TYPE_OPERAND_FMT
-#define TYPE_OPERAND_FMT "@%s"
-
-/* Write the extra assembler code needed to declare a function's result.
- Most svr4 assemblers don't require any special declaration of the
- result value, but there are exceptions. */
-
-#ifndef ASM_DECLARE_RESULT
-#define ASM_DECLARE_RESULT(FILE, RESULT)
-#endif
+#define HANDLE_SYSV_PRAGMA 1
-/* These macros generate the special .type and .size directives which
- are used to set the corresponding fields of the linker symbol table
- entries in an ELF object file under SVR4. These macros also output
- the starting labels for the relevant functions/objects. */
+/* Don't assume anything about the header files. */
+#undef NO_IMPLICIT_EXTERN_C
+#define NO_IMPLICIT_EXTERN_C 1
-/* Write the extra assembler code needed to declare a function properly.
- Some svr4 assemblers need to also have something extra said about the
- function's return value. We allow for that here. */
+/* Define some types that are the same on all NetBSD platforms,
+ making them agree with <machine/ansi.h>. */
-#undef ASM_DECLARE_FUNCTION_NAME
-#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
- do { \
- fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
- assemble_name (FILE, NAME); \
- putc (',', FILE); \
- fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
- putc ('\n', FILE); \
- ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
- ASM_OUTPUT_LABEL(FILE, NAME); \
- } while (0)
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
-/* Write the extra assembler code needed to declare an object properly. */
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
-#undef ASM_DECLARE_OBJECT_NAME
-#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
- do { \
- fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
- assemble_name (FILE, NAME); \
- putc (',', FILE); \
- fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
- putc ('\n', FILE); \
- size_directive_output = 0; \
- if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
- { \
- size_directive_output = 1; \
- fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
- assemble_name (FILE, NAME); \
- fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
- } \
- ASM_OUTPUT_LABEL(FILE, NAME); \
- } while (0)
+#undef WINT_TYPE
+#define WINT_TYPE "int"
+\f
-/* Output the size directive for a decl in rest_of_decl_compilation
- in the case where we did not do so before the initializer.
- Once we find the error_mark_node, we know that the value of
- size_directive_output was set
- by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
-
-#undef ASM_FINISH_DECLARE_OBJECT
-#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
-do { \
- char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
- if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
- && ! AT_END && TOP_LEVEL \
- && DECL_INITIAL (DECL) == error_mark_node \
- && !size_directive_output) \
- { \
- size_directive_output = 1; \
- fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
- assemble_name (FILE, name); \
- fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
- } \
- } while (0)
-
-/* This is how to declare the size of a function. */
-
-#undef ASM_DECLARE_FUNCTION_SIZE
-#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
- do { \
- if (!flag_inhibit_size_directive) \
- { \
- char label[256]; \
- static int labelno; \
- labelno++; \
- ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
- ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
- fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
- assemble_name (FILE, (FNAME)); \
- fprintf (FILE, ","); \
- assemble_name (FILE, label); \
- fprintf (FILE, "-"); \
- assemble_name (FILE, (FNAME)); \
- putc ('\n', FILE); \
- } \
- } while (0)
+/* Attempt to turn on execute permission for the stack. This may be
+ used by TARGET_TRAMPOLINE_INIT if 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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