MI bits for Gcc 3.1.
This commit is contained in:
David E. O'Brien
parent
353c69dcb9
commit
b8df1f7e86
@ -1,5 +1,5 @@
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/* Base configuration file for all FreeBSD targets.
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Copyright (C) 1999, 2000 Free Software Foundation, Inc.
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Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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This file is part of GNU CC.
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@ -21,116 +21,72 @@ Boston, MA 02111-1307, USA. */
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/* Common FreeBSD configuration.
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All FreeBSD architectures should include this file, which will specify
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their commonalities.
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Adapted from /usr/src/contrib/gcc/config/i386/freebsd.h,
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/usr/src/contrib/gcc/config/svr4.h &
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egcs/gcc/config/i386/freebsd-elf.h by
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David O'Brien <obrien@FreeBSD.org>. */
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Adapted from gcc/config/i386/freebsd-elf.h by
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David O'Brien <obrien@FreeBSD.org>.
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Further work by David O'Brien <obrien@FreeBSD.org> and
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Loren J. Rittle <ljrittle@acm.org>. */
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/* $FreeBSD$ */
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/* Cpp, assembler, linker, library, and startfile spec's. */
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/* In case we need to know. */
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#define USING_CONFIG_FREEBSD 1
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/* This defines which switch letters take arguments. On FreeBSD, most of
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the normal cases (defined in gcc.c) apply, and we also have -h* and
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-z* options (for the linker) (coming from SVR4).
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We also have -R (alias --rpath), no -z, --soname (-h), --assert etc. */
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#define FBSD_SWITCH_TAKES_ARG(CHAR) \
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(DEFAULT_SWITCH_TAKES_ARG (CHAR) \
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|| (CHAR) == 'h' \
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|| (CHAR) == 'z' /* ignored by ld */ \
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|| (CHAR) == 'R')
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#undef SWITCH_TAKES_ARG
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#define SWITCH_TAKES_ARG(CHAR) (FBSD_SWITCH_TAKES_ARG(CHAR))
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/* This defines which multi-letter switches take arguments. */
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#define FBSD_WORD_SWITCH_TAKES_ARG(STR) \
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(DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
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|| !strcmp ((STR), "rpath") || !strcmp ((STR), "rpath-link") \
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|| !strcmp ((STR), "soname") || !strcmp ((STR), "defsym") \
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|| !strcmp ((STR), "assert") || !strcmp ((STR), "dynamic-linker"))
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#undef WORD_SWITCH_TAKES_ARG
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#define WORD_SWITCH_TAKES_ARG(STR) (FBSD_WORD_SWITCH_TAKES_ARG(STR))
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/* Place spaces around this string. We depend on string splicing to produce
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the final CPP_PREDEFINES value. */
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#define FBSD_CPP_PREDEFINES \
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" -D__FreeBSD__=5 -D__FreeBSD_cc_version=500002 -Dunix -Asystem(unix) -Asystem(FreeBSD) "
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#define FBSD_CPP_SPEC " \
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%(cpp_cpu) \
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%{!maout: -D__ELF__} \
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%{munderscores: -D__UNDERSCORES__} \
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%{maout: %{!mno-underscores: -D__UNDERSCORES__}} \
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%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} \
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%{posix:-D_POSIX_SOURCE}"
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES FBSD_CPP_PREDEFINES
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#undef CPP_SPEC
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#define CPP_SPEC FBSD_CPP_SPEC
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/* Provide a LIB_SPEC appropriate for FreeBSD. Before
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__FreeBSD_version 500016, select the appropriate libc, depending on
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whether we're doing profiling or need threads support. (similar to
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the default, except no -lg, and no -p). At __FreeBSD_version
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500016 and later, when threads support is requested include both
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-lc and -lc_r instead of only -lc_r. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC FBSD_STARTFILE_SPEC
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC FBSD_ENDFILE_SPEC
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#undef LIB_SPEC
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#include <sys/param.h>
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#if __FreeBSD_version >= 500016
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#define LIB_SPEC " \
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%{!shared: \
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%{!pg: %{pthread:-lc_r} -lc} \
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%{pg: %{pthread:-lc_r_p} -lc_p} \
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}"
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#else
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#define LIB_SPEC " \
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%{!shared: \
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%{!pg: \
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%{!pthread:-lc} \
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%{pthread:-lc_r}} \
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%{pg: \
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%{!pthread:-lc_p} \
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%{pthread:-lc_r_p}} \
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}"
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#endif
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#define LIB_SPEC FBSD_LIB_SPEC
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/************************[ Target stuff ]***********************************/
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/* All FreeBSD Architectures support the ELF object file format. */
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#undef OBJECT_FORMAT_ELF
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#define OBJECT_FORMAT_ELF
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#define OBJECT_FORMAT_ELF 1
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/* Don't assume anything about the header files. */
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#undef NO_IMPLICIT_EXTERN_C
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#define NO_IMPLICIT_EXTERN_C
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/* Implicit library calls should use memcpy, not bcopy, etc. */
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#undef TARGET_MEM_FUNCTIONS
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#define TARGET_MEM_FUNCTIONS
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#define NO_IMPLICIT_EXTERN_C 1
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/* Allow #sccs in preprocessor. */
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#undef SCCS_DIRECTIVE
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#define SCCS_DIRECTIVE
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#define SCCS_DIRECTIVE 1
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#undef HAVE_ATEXIT
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#define HAVE_ATEXIT
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/* Make gcc agree with FreeBSD's standard headers (<machine/ansi.h>, etc...) */
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "int"
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#undef WCHAR_UNSIGNED
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#define WCHAR_UNSIGNED 0
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#ifdef FREEBSD_NATIVE
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#define LIBSTDCXX_PROFILE "-lstdc++_p"
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#endif
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#define MATH_LIBRARY_PROFILE "-lm_p"
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/* Code generation parameters. */
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/* Don't default to pcc-struct-return, because gcc is the only compiler, and
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we want to retain compatibility with older gcc versions
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(even though the SVR4 ABI for the i386 says that records and unions are
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returned in memory). */
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#undef DEFAULT_PCC_STRUCT_RETURN
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#define DEFAULT_PCC_STRUCT_RETURN 0
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/* Writing `int' for a bitfield forces int alignment for the structure. */
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/* XXX: ok for Alpha?? */
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#undef PCC_BITFIELD_TYPE_MATTERS
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@ -141,395 +97,13 @@ Boston, MA 02111-1307, USA. */
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with libraries compiled with the native cc. */
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#undef NO_DOLLAR_IN_LABEL
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/* The prefix to add to user-visible assembler symbols.
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For System V Release 4 & ELF the convention is *not* to prepend a leading
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underscore onto user-level symbol names. */
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#undef USER_LABEL_PREFIX
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#define USER_LABEL_PREFIX ""
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/* Handle #pragma weak and #pragma pack. */
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#undef HANDLE_SYSV_PRAGMA
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#define HANDLE_SYSV_PRAGMA
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#ifdef WANT_DWARF2_UNWIND
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/* FreeBSD ELF uses across the board will now use DWARF2 unwinding as the IA-64
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psABI requires it. */
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#define DWARF2_UNWIND_INFO 1
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#else
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/* Maintain compatibility with the FreeBSD {3,4}.x C++ ABI. */
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#define DWARF2_UNWIND_INFO 0
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#endif
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/* Do not use ``thunks'' to implement C++ vtables. This method still has
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fatal bugs. Also, GCC 3.0 will have a new C++ ABI that may not even
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support `thunks'. */
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#undef DEFAULT_VTABLE_THUNKS
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/* Used by libgcc2.c. We support file locking with fcntl / F_SETLKW.
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This enables the test coverage code to use file locking when exiting a
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program, which avoids race conditions if the program has forked. */
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#define TARGET_HAS_F_SETLKW 1
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/************************[ Assembler stuff ]********************************/
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/* Override the default comment-starter of "/". */
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#undef ASM_COMMENT_START
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#define ASM_COMMENT_START "#"
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/* Attach a special .ident directive to the end of the file to identify
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the version of GCC which compiled this code. The format of the .ident
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string is patterned after the ones produced by native SVR4 C compilers. */
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#undef IDENT_ASM_OP
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#define IDENT_ASM_OP "\t.ident\t"
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/* Output #ident as a .ident. */
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#undef ASM_OUTPUT_IDENT
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#define ASM_OUTPUT_IDENT(FILE, NAME) \
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fprintf ((FILE), "%s\"%s\"\n", IDENT_ASM_OP, (NAME));
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/* Identify the front-end which produced this file. To keep symbol
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space down, and not confuse kdb, only do this if the language is
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not C. (svr4.h defines ASM_IDENTIFY_GCC but neglects this) */
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#undef ASM_IDENTIFY_LANGUAGE
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#define ASM_IDENTIFY_LANGUAGE(FILE) \
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{ \
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if (strcmp (lang_identify (), "c") != 0) \
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output_lang_identify (FILE); \
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}
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#undef ASM_FILE_END
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#define ASM_FILE_END(FILE) \
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do { \
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if (!flag_no_ident) \
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fprintf ((FILE), "%s\"[ASM_FILE_END]GCC: (%s) %s\"\n", \
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IDENT_ASM_OP, lang_identify(), version_string); \
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} while (0)
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/* This is the pseudo-op used to generate a contiguous sequence of byte
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values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
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AUTOMATICALLY APPENDED. This is the same for most SVR4 assemblers. */
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#undef ASCII_DATA_ASM_OP
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#define ASCII_DATA_ASM_OP "\t.ascii\t"
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#undef ASM_BYTE_OP
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#define ASM_BYTE_OP "\t.byte\t"
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/* This is how to allocate empty space in some section. The .zero
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pseudo-op is used for this on most ELF assemblers. */
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#undef SKIP_ASM_OP
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#define SKIP_ASM_OP "\t.zero\t"
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/* A table of bytes codes used by the ASM_OUTPUT_ASCII and
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ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
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corresponds to a particular byte value [0..255]. For any
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given byte value, if the value in the corresponding table
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position is zero, the given character can be output directly.
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If the table value is 1, the byte must be output as a \ooo
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octal escape. If the tables value is anything else, then the
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byte value should be output as a \ followed by the value
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in the table. Note that we can use standard UN*X escape
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sequences for many control characters, but we don't use
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\a to represent BEL because some SVR4 assemblers (e.g. on
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the i386) don't know about that. Also, we don't use \v
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since some versions of gas, such as 2.2 did not accept it. */
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#define ESCAPES \
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"\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
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\0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
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\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\\\0\0\0\
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\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\
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\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
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\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
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\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
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\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"
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/* Some SVR4 assemblers have a limit on the number of characters which
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can appear in the operand of a .string directive. If your assembler
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has such a limitation, you should define STRING_LIMIT to reflect that
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limit. Note that at least some SVR4 assemblers have a limit on the
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actual number of bytes in the double-quoted string, and that they
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count each character in an escape sequence as one byte. Thus, an
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escape sequence like \377 would count as four bytes.
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If your target assembler doesn't support the .string directive, you
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should define this to zero.
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*/
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#undef STRING_LIMIT
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#define STRING_LIMIT ((unsigned) 256)
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#undef STRING_ASM_OP
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#define STRING_ASM_OP "\t.string\t"
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/* Output the label which precedes a jumptable. Note that for all svr4/ELF
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systems where we actually generate jumptables (which is to say every
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SVR4 target except i386, where we use casesi instead) we put the jump-
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tables into the .rodata section and since other stuff could have been
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put into the .rodata section prior to any given jumptable, we have to
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make sure that the location counter for the .rodata section gets pro-
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perly re-aligned prior to the actual beginning of the jump table. */
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#undef ALIGN_ASM_OP
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#define ALIGN_ASM_OP "\t.align\t"
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/* This says how to output assembler code to declare an
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uninitialized external linkage data object. Under SVR4/ELF,
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the linker seems to want the alignment of data objects
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to depend on their types. We do exactly that here. */
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#undef COMMON_ASM_OP
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#define COMMON_ASM_OP "\t.comm\t"
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/* This says how to output assembler code to declare an
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uninitialized internal linkage data object. Under SVR4/ELF,
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the linker seems to want the alignment of data objects
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to depend on their types. We do exactly that here. */
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#undef LOCAL_ASM_OP
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#define LOCAL_ASM_OP "\t.local\t"
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#undef ASM_OUTPUT_BEFORE_CASE_LABEL
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#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \
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ASM_OUTPUT_ALIGN ((FILE), 2);
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#undef ASM_OUTPUT_CASE_LABEL
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#define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \
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do { \
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ASM_OUTPUT_BEFORE_CASE_LABEL ((FILE), (PREFIX), (NUM), (JUMPTABLE)) \
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ASM_OUTPUT_INTERNAL_LABEL ((FILE), (PREFIX), (NUM)); \
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} while (0)
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/* The standard SVR4/ELF assembler seems to require that certain builtin
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library routines (e.g. .udiv) be explicitly declared as .globl
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in each assembly file where they are referenced. */
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#undef ASM_OUTPUT_EXTERNAL_LIBCALL
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#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
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ASM_GLOBALIZE_LABEL ((FILE), XSTR ((FUN), 0))
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/* Support const sections and the ctors and dtors sections for g++.
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Note that there appears to be two different ways to support const
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sections at the moment. You can either #define the symbol
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READONLY_DATA_SECTION (giving it some code which switches to the
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readonly data section) or else you can #define the symbols
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EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
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SELECT_RTX_SECTION. We do both here just to be on the safe side.
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FreeBSD conditionalizes the use of ".section rodata" depending on
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ELF mode - otherwise .text. */
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#undef USE_CONST_SECTION
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#define USE_CONST_SECTION TARGET_ELF
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#undef CONST_SECTION_ASM_OP
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#define CONST_SECTION_ASM_OP "\t.section\t.rodata"
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/* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
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Note that we want to give these sections the SHF_WRITE attribute
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because these sections will actually contain data (i.e. tables of
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addresses of functions in the current root executable or shared library
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file) and, in the case of a shared library, the relocatable addresses
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will have to be properly resolved/relocated (and then written into) by
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the dynamic linker when it actually attaches the given shared library
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to the executing process. (Note that on SVR4, you may wish to use the
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`-z text' option to the ELF linker, when building a shared library, as
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an additional check that you are doing everything right. But if you do
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use the `-z text' option when building a shared library, you will get
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errors unless the .ctors and .dtors sections are marked as writable
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via the SHF_WRITE attribute.) */
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#undef CTORS_SECTION_ASM_OP
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#define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"aw\""
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#undef DTORS_SECTION_ASM_OP
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#define DTORS_SECTION_ASM_OP "\t.section\t.dtors,\"aw\""
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/* On SVR4, we *do* have support for the .init and .fini sections, and we
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can put stuff in there to be executed before and after `main'. We let
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crtstuff.c and other files know this by defining the following symbols.
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The definitions say how to change sections to the .init and .fini
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sections. This is the same for all known SVR4 assemblers. */
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#undef INIT_SECTION_ASM_OP
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#define INIT_SECTION_ASM_OP "\t.section\t.init"
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#undef FINI_SECTION_ASM_OP
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#define FINI_SECTION_ASM_OP "\t.section\t.fini"
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/* A default list of other sections which we might be "in" at any given
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time. For targets that use additional sections (e.g. .tdesc) you
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should override this definition in the target-specific file which
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includes this file. */
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#undef EXTRA_SECTIONS
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#define EXTRA_SECTIONS in_const, in_ctors, in_dtors
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/* A default list of extra section function definitions. For targets
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that use additional sections (e.g. .tdesc) you should override this
|
||||
definition in the target-specific file which includes this file. */
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#undef EXTRA_SECTION_FUNCTIONS
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#define EXTRA_SECTION_FUNCTIONS \
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CONST_SECTION_FUNCTION \
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CTORS_SECTION_FUNCTION \
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DTORS_SECTION_FUNCTION
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#undef READONLY_DATA_SECTION
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#define READONLY_DATA_SECTION() const_section ()
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extern void text_section ();
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#undef CONST_SECTION_FUNCTION
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#define CONST_SECTION_FUNCTION \
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void \
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const_section () \
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{ \
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if (!USE_CONST_SECTION) \
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text_section(); \
|
||||
else if (in_section != in_const) \
|
||||
{ \
|
||||
fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
|
||||
in_section = in_const; \
|
||||
} \
|
||||
}
|
||||
|
||||
#undef CTORS_SECTION_FUNCTION
|
||||
#define CTORS_SECTION_FUNCTION \
|
||||
void \
|
||||
ctors_section () \
|
||||
{ \
|
||||
if (in_section != in_ctors) \
|
||||
{ \
|
||||
fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
|
||||
in_section = in_ctors; \
|
||||
} \
|
||||
}
|
||||
|
||||
#undef DTORS_SECTION_FUNCTION
|
||||
#define DTORS_SECTION_FUNCTION \
|
||||
void \
|
||||
dtors_section () \
|
||||
{ \
|
||||
if (in_section != in_dtors) \
|
||||
{ \
|
||||
fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
|
||||
in_section = in_dtors; \
|
||||
} \
|
||||
}
|
||||
|
||||
/* A C statement or statements to switch to the appropriate
|
||||
section for output of RTX in mode MODE. RTX is some kind
|
||||
of constant in RTL. The argument MODE is redundant except
|
||||
in the case of a `const_int' rtx. Currently, these always
|
||||
go into the const section. */
|
||||
|
||||
#undef SELECT_RTX_SECTION
|
||||
#define SELECT_RTX_SECTION(MODE, RTX) const_section()
|
||||
|
||||
/* Define the strings used for the special svr4/ELF .type and .size
|
||||
directives. These strings generally do not vary from one svr4/ELF
|
||||
system to another. */
|
||||
|
||||
#undef TYPE_ASM_OP
|
||||
#define TYPE_ASM_OP "\t.type\t"
|
||||
#undef SIZE_ASM_OP
|
||||
#define SIZE_ASM_OP "\t.size\t"
|
||||
|
||||
/* This is how we tell the assembler that a symbol is weak. */
|
||||
|
||||
#undef ASM_WEAKEN_LABEL
|
||||
#define ASM_WEAKEN_LABEL(FILE, NAME) \
|
||||
do { \
|
||||
fputs ("\t.globl\t", (FILE)); assemble_name ((FILE), (NAME)); \
|
||||
fputc ('\n', (FILE)); \
|
||||
fputs ("\t.weak\t", (FILE)); assemble_name ((FILE), (NAME)); \
|
||||
fputc ('\n', (FILE)); \
|
||||
} while (0)
|
||||
|
||||
/* The following macro defines the [default] format used with ELF to output
|
||||
the second operand of the .type assembler directive. */
|
||||
|
||||
#undef TYPE_OPERAND_FMT
|
||||
#define TYPE_OPERAND_FMT "@%s"
|
||||
|
||||
/* Write the extra assembler code needed to declare a function's result.
|
||||
Most svr4/ELF assemblers don't require any special declaration of the
|
||||
result value. */
|
||||
|
||||
#undef ASM_DECLARE_RESULT
|
||||
#define ASM_DECLARE_RESULT(FILE, RESULT)
|
||||
|
||||
/* 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/ELF. These macros also output
|
||||
the starting labels for the relevant functions/objects. */
|
||||
|
||||
/* Write the extra assembler code needed to declare an object properly. */
|
||||
|
||||
#undef ASM_DECLARE_OBJECT_NAME
|
||||
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
|
||||
do { \
|
||||
fprintf (FILE, "%s ", 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, "%s ", SIZE_ASM_OP); \
|
||||
assemble_name (FILE, NAME); \
|
||||
putc (',', FILE); \
|
||||
fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, \
|
||||
int_size_in_bytes (TREE_TYPE (DECL))); \
|
||||
fputc ('\n', FILE); \
|
||||
} \
|
||||
ASM_OUTPUT_LABEL(FILE, NAME); \
|
||||
} while (0)
|
||||
|
||||
/* 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, "%s ", SIZE_ASM_OP); \
|
||||
assemble_name (FILE, name); \
|
||||
putc (',', FILE); \
|
||||
fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, \
|
||||
int_size_in_bytes (TREE_TYPE (DECL))); \
|
||||
fputc ('\n', FILE); \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
|
||||
/************************[ Debugger stuff ]*********************************/
|
||||
|
||||
/* All ELF targets can support DWARF-2. */
|
||||
#undef DWARF2_DEBUGGING_INFO
|
||||
#define DWARF2_DEBUGGING_INFO
|
||||
|
||||
/* This is BSD, so we want the DBX format. */
|
||||
#undef DBX_DEBUGGING_INFO
|
||||
#define DBX_DEBUGGING_INFO
|
||||
|
||||
/* This is BSD, so use stabs instead of DWARF debug format. */
|
||||
#undef PREFERRED_DEBUGGING_TYPE
|
||||
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
|
||||
|
||||
/* But allow STABS to be supported as well.
|
||||
Note that we want to override some definition settings done for some
|
||||
architecture's native OS's tools that don't apply to us. */
|
||||
#undef ASM_IDENTIFY_GCC
|
||||
#undef ASM_IDENTIFY_LANGUAGE
|
||||
|
||||
Loading…
Reference in New Issue
Block a user