config.gcc: Add FreeBSD/IA-64 target.

2001-11-07  David O'Brien  <obrien@FreeBSD.org>
	* config.gcc: Add FreeBSD/IA-64 target. Expand config/i64/elf.h headers.
	* config/i64/ia64.h (TARGET_VERSION,ASM_SPEC,LINK_SPEC): Remove,
	they are OS specific.  Use CPP_CPU_SPEC rather than CPP_PREDEFINES,
	so OS specific files and use CPP_PREDEFINES for their needs.
	* config/i64/elf.h (TARGET_VERSION): Add.  Also, move inclusion of
	target headers to tm_file.
	* config/ia64/aix.h (TARGET_VERSION): Likewise.
	* config/ia64/hpux.h (TARGET_VERSION): Likewise.
	* config/ia64/linux.h (TARGET_VERSION): Likewise.
	(FUNCTION_PROFILER): Remove.
	* config/ia64/ia64.h (FUNCTION_PROFILER): Update defintion using the
	version in config/ia64/linux.h.
	* config/ia64/freebsd.h: New file.
	* config/freebsd.h: Tidy up.
	(_USING_CONFIG_FREEBSD): Define.
	(FBSD_CPP_PREDEFINES): Add __KPRINTF_ATTRIBUTE__.
	(FBSD_CPP_SPEC): Define generic FreeBSD spec.
	(FBSD_STARTFILE_SPEC): Likewise.
	(FBSD_ENDFILE_SPEC): Likewise.
	(FBSD_LIB_SPEC): Likewise.
	(WCHAR_UNSIGNED): Undefine, FreeBSD's wchars are signed.
	(USER_LABEL_PREFIX): Define to ELF compatible value as some CPU headers
	set an ELF-improper one.

Approved by:  Richard Henderson <rth@redhat.com>
              Message-ID: <20011109100352.A6186@redhat.com>

From-SVN: r46909

1 files changed, 99 insertions, 35 deletions

diff --git a/gcc/config/freebsd.h b/gcc/config/freebsd.h
index 56d16c3..949be89 100644
--- a/gcc/config/freebsd.h
+++ b/gcc/config/freebsd.h
@@ -27,6 +27,9 @@ Boston, MA 02111-1307, USA.  */
    Loren J. Rittle <ljrittle@acm.org>.  */
 
 
+/* To help with rs6000/sysv4.h carnal knowledge problem.  */
+#define _USING_CONFIG_FREEBSD 1
+
 /* This defines which switch letters take arguments.  On FreeBSD, most of
    the normal cases (defined in gcc.c) apply, and we also have -h* and
    -z* options (for the linker) (coming from SVR4).
@@ -38,41 +41,43 @@ Boston, MA 02111-1307, USA.  */
     || (CHAR) == 'z' /* ignored by ld */				\
     || (CHAR) == 'R')
 
-#undef SWITCH_TAKES_ARG
+#undef  SWITCH_TAKES_ARG
 #define SWITCH_TAKES_ARG(CHAR) (FBSD_SWITCH_TAKES_ARG(CHAR))
 
+/* This defines which multi-letter switches take arguments.  */
+
 #define FBSD_WORD_SWITCH_TAKES_ARG(STR)					\
   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR)					\
    || !strcmp ((STR), "rpath") || !strcmp ((STR), "rpath-link")		\
    || !strcmp ((STR), "soname") || !strcmp ((STR), "defsym") 		\
    || !strcmp ((STR), "assert") || !strcmp ((STR), "dynamic-linker"))
 
-#undef WORD_SWITCH_TAKES_ARG
+#undef  WORD_SWITCH_TAKES_ARG
 #define WORD_SWITCH_TAKES_ARG(STR) (FBSD_WORD_SWITCH_TAKES_ARG(STR))
 
 #if FBSD_MAJOR == 6
 #define FBSD_CPP_PREDEFINES \
-  "-D__FreeBSD__=6 -Dunix -D__ELF__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
+  "-D__FreeBSD__=6 -Dunix -D__ELF__ -D__KPRINTF_ATTRIBUTE__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
 #endif
 
 #if FBSD_MAJOR == 5
 #define FBSD_CPP_PREDEFINES \
-  "-D__FreeBSD__=5 -Dunix -D__ELF__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
+  "-D__FreeBSD__=5 -Dunix -D__ELF__ -D__KPRINTF_ATTRIBUTE__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
 #endif
 
 #if FBSD_MAJOR == 4
 #define FBSD_CPP_PREDEFINES \
-  "-D__FreeBSD__=4 -Dunix -D__ELF__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
+  "-D__FreeBSD__=4 -Dunix -D__ELF__ -D__KPRINTF_ATTRIBUTE__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
 #endif
 
 #if FBSD_MAJOR == 3
 #define FBSD_CPP_PREDEFINES \
-  "-D__FreeBSD__=3 -Dunix -D__ELF__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
+  "-D__FreeBSD__=3 -Dunix -D__ELF__ -D__KPRINTF_ATTRIBUTE__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
 #endif
 
 #ifndef FBSD_CPP_PREDEFINES
 #define FBSD_CPP_PREDEFINES \
-  "-D__FreeBSD__   -Dunix -D__ELF__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
+  "-D__FreeBSD__   -Dunix -D__ELF__ -D__KPRINTF_ATTRIBUTE__ -Asystem=unix -Asystem=bsd -Asystem=FreeBSD"
 #endif
 
 #undef  CPP_PREDEFINES
@@ -81,11 +86,35 @@ Boston, MA 02111-1307, USA.  */
 /* Provide a CPP_SPEC appropriate for FreeBSD.  We just deal with the GCC 
    option `-posix', and PIC issues.  */
 
-#undef CPP_SPEC
-#define CPP_SPEC "%(cpp_cpu)						\
+#define FBSD_CPP_SPEC "							\
+  %(cpp_cpu)								\
   %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__}		\
   %{posix:-D_POSIX_SOURCE}"
 
+#undef  CPP_SPEC
+#define CPP_SPEC FBSD_CPP_SPEC
+
+/* Provide a STARTFILE_SPEC appropriate for FreeBSD.  Here we add
+   the magical crtbegin.o file (see crtstuff.c) which provides part 
+	of the support for getting C++ file-scope static object constructed 
+	before entering `main'. */
+   
+#define FBSD_STARTFILE_SPEC \
+  "%{!shared: \
+     %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
+		       %{!p:%{profile:gcrt1.o%s} \
+			 %{!profile:crt1.o%s}}}} \
+   crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
+
+/* Provide a ENDFILE_SPEC appropriate for FreeBSD.  Here we tack on
+   the magical crtend.o file (see crtstuff.c) which provides part of 
+	the support for getting C++ file-scope static object constructed 
+	before entering `main', followed by a normal "finalizer" file, 
+	`crtn.o'.  */
+
+#define FBSD_ENDFILE_SPEC \
+  "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
+
 /* Provide a LIB_SPEC appropriate for FreeBSD as configured and as
    required by the user-land thread model.  Before __FreeBSD_version
    500016, select the appropriate libc, depending on whether we're
@@ -100,9 +129,12 @@ Boston, MA 02111-1307, USA.  */
    misconfigured the gcc bootstrap but are later consulting FreeBSD
    manual pages that refer to the mythical -pthread option).  */
 
-#undef  LIB_SPEC
+/* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate
+   libc, depending on whether we're doing profiling or need threads support.
+   (simular to the default, except no -lg, and no -p).  */
+
 #ifdef FBSD_NO_THREADS
-#define LIB_SPEC "							\
+#define FBSD_LIB_SPEC "							\
   %{pthread: %eThe -pthread option is only supported on FreeBSD when gcc \
 is built with the --enable-threads configure-time option.}		\
   %{!shared:								\
@@ -111,13 +143,13 @@ is built with the --enable-threads configure-time option.}		\
   }"
 #else
 #if FBSD_MAJOR >= 5
-#define LIB_SPEC "							\
+#define FBSD_LIB_SPEC "							\
   %{!shared:								\
     %{!pg: %{pthread:-lc_r} -lc}					\
     %{pg:  %{pthread:-lc_r_p} -lc_p}					\
   }"
 #else
-#define LIB_SPEC "							\
+#define FBSD_LIB_SPEC "							\
   %{!shared:								\
     %{!pg:								\
       %{!pthread:-lc}							\
@@ -129,49 +161,81 @@ is built with the --enable-threads configure-time option.}		\
 #endif
 #endif
 
-/* Code generation parameters.  */
+#undef  LIB_SPEC
+#define LIB_SPEC FBSD_LIB_SPEC
+
 
-/* Make gcc agree with <machine/ansi.h>.  */
+/************************[  Target stuff  ]***********************************/
 
-#undef WCHAR_TYPE
+/* Don't assume anything about the header files.  */
+#undef  NO_IMPLICIT_EXTERN_C
+#define NO_IMPLICIT_EXTERN_C
+
+/* Allow #sccs in preprocessor.  */
+#undef  SCCS_DIRECTIVE
+#define SCCS_DIRECTIVE
+
+/* Make gcc agree with FreeBSD's standard headers (<machine/ansi.h>, etc...)  */
+
+#undef  WCHAR_TYPE
 #define WCHAR_TYPE "int"
 
-#undef WCHAR_UNSIGNED
+#undef  WCHAR_UNSIGNED
 #define WCHAR_UNSIGNED 0
 
+/* Code generation parameters.  */
+
 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
    we want to retain compatibility with older gcc versions
    (even though the SVR4 ABI for the i386 says that records and unions are
    returned in memory).  */
-#undef DEFAULT_PCC_STRUCT_RETURN
+#undef  DEFAULT_PCC_STRUCT_RETURN
 #define DEFAULT_PCC_STRUCT_RETURN 0
 
-/* Ensure we the configuration knows our system correctly so we can link with
-   libraries compiled with the native cc.  */
+/* Use periods rather than dollar signs in special g++ assembler names.
+   This ensures the configuration knows our system correctly so we can link
+   with libraries compiled with the native cc.  */
 #undef NO_DOLLAR_IN_LABEL
 
-/* The GNU tools operate better with dwarf2 than stabs.  Since we
-   don't have any native tools to be compatible with, default to
-   dwarf2.  */
-#undef PREFERRED_DEBUGGING_TYPE
-#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
+/* The prefix to add to user-visible assembler symbols.
+   For System V Release 4 & ELF the convention is *not* to prepend a leading
+   underscore onto user-level symbol names. Some CPU files such as
+   config/sparc/sparc.h set this wrong for ELF.  */
+
+#undef  USER_LABEL_PREFIX
+#define USER_LABEL_PREFIX ""
+
+/* Handle #pragma weak and #pragma pack.  */
+#undef  HANDLE_SYSV_PRAGMA
+#define HANDLE_SYSV_PRAGMA
+
+/* Use more efficient ``thunks'' to implement C++ vtables.  */
+#undef DEFAULT_VTABLE_THUNKS
+#define DEFAULT_VTABLE_THUNKS 1
+
+/************************[  Assembler stuff  ]********************************/
 
-#undef IDENT_ASM_OP
+#undef  IDENT_ASM_OP
 #define IDENT_ASM_OP "\t.ident\t"
 
 /* Output #ident as a .ident.  */
-#undef ASM_OUTPUT_IDENT
+
+#undef  ASM_OUTPUT_IDENT
 #define ASM_OUTPUT_IDENT(FILE, NAME)					\
   fprintf ((FILE), "%s\"%s\"\n", IDENT_ASM_OP, (NAME));
 
-/* Miscellaneous parameters.  */
+/************************[  Debugger stuff  ]*********************************/
 
-/* Don't assume anything about the header files.  */
-#undef NO_IMPLICIT_EXTERN_C
-#define NO_IMPLICIT_EXTERN_C
+/* All ELF targets can support DWARF-2.  */
+#undef  DWARF2_DEBUGGING_INFO
+#define DWARF2_DEBUGGING_INFO
 
-/* Allow #sccs in preprocessor.  */
-#define SCCS_DIRECTIVE
+/* This is BSD, so we want the DBX format.  */
+#undef  DBX_DEBUGGING_INFO
+#define DBX_DEBUGGING_INFO
 
-/* Handle #pragma weak and #pragma pack.  */
-#define HANDLE_SYSV_PRAGMA
+/* Even though this is BSD, ELF and the GNU tools operates better with dwarf2
+   than stabs.  Since we don't have any native tools to be compatible with,
+   defaulting to dwarf2 is OK.  */
+#undef  PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG