From 1e3fa59089dcab40bc0b7515b68230f5770790f7 Mon Sep 17 00:00:00 2001 From: obrien Date: Tue, 30 Apr 2002 17:22:42 +0000 Subject: MI bits for Gcc 3.1. --- contrib/gcc/config/freebsd.h | 494 +++---------------------------------------- 1 file changed, 34 insertions(+), 460 deletions(-) (limited to 'contrib/gcc') diff --git a/contrib/gcc/config/freebsd.h b/contrib/gcc/config/freebsd.h index 1b47acb..cd9f7eb 100644 --- a/contrib/gcc/config/freebsd.h +++ b/contrib/gcc/config/freebsd.h @@ -1,5 +1,5 @@ /* Base configuration file for all FreeBSD targets. - Copyright (C) 1999, 2000 Free Software Foundation, Inc. + Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc. This file is part of GNU CC. @@ -21,115 +21,71 @@ Boston, MA 02111-1307, USA. */ /* Common FreeBSD configuration. All FreeBSD architectures should include this file, which will specify their commonalities. - Adapted from /usr/src/contrib/gcc/config/i386/freebsd.h, - /usr/src/contrib/gcc/config/svr4.h & - egcs/gcc/config/i386/freebsd-elf.h by - David O'Brien . */ + Adapted from gcc/config/i386/freebsd-elf.h by + David O'Brien . + Further work by David O'Brien and + Loren J. Rittle . */ /* $FreeBSD$ */ - -/* Cpp, assembler, linker, library, and startfile spec's. */ +/* In case we need to know. */ +#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). We also have -R (alias --rpath), no -z, --soname (-h), --assert etc. */ -#define FBSD_SWITCH_TAKES_ARG(CHAR) \ - (DEFAULT_SWITCH_TAKES_ARG (CHAR) \ - || (CHAR) == 'h' \ - || (CHAR) == 'z' /* ignored by ld */ \ - || (CHAR) == 'R') - #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 #define WORD_SWITCH_TAKES_ARG(STR) (FBSD_WORD_SWITCH_TAKES_ARG(STR)) -/* Place spaces around this string. We depend on string splicing to produce - the final CPP_PREDEFINES value. */ - -#define FBSD_CPP_PREDEFINES \ - " -D__FreeBSD__=5 -D__FreeBSD_cc_version=500002 -Dunix -Asystem(unix) -Asystem(FreeBSD) " - -#define FBSD_CPP_SPEC " \ - %(cpp_cpu) \ - %{!maout: -D__ELF__} \ - %{munderscores: -D__UNDERSCORES__} \ - %{maout: %{!mno-underscores: -D__UNDERSCORES__}} \ - %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} \ - %{posix:-D_POSIX_SOURCE}" +#undef CPP_PREDEFINES +#define CPP_PREDEFINES FBSD_CPP_PREDEFINES #undef CPP_SPEC #define CPP_SPEC FBSD_CPP_SPEC -/* Provide a LIB_SPEC appropriate for FreeBSD. Before - __FreeBSD_version 500016, select the appropriate libc, depending on - whether we're doing profiling or need threads support. (similar to - the default, except no -lg, and no -p). At __FreeBSD_version - 500016 and later, when threads support is requested include both - -lc and -lc_r instead of only -lc_r. */ +#undef STARTFILE_SPEC +#define STARTFILE_SPEC FBSD_STARTFILE_SPEC + +#undef ENDFILE_SPEC +#define ENDFILE_SPEC FBSD_ENDFILE_SPEC #undef LIB_SPEC -#include -#if __FreeBSD_version >= 500016 -#define LIB_SPEC " \ - %{!shared: \ - %{!pg: %{pthread:-lc_r} -lc} \ - %{pg: %{pthread:-lc_r_p} -lc_p} \ - }" -#else -#define LIB_SPEC " \ - %{!shared: \ - %{!pg: \ - %{!pthread:-lc} \ - %{pthread:-lc_r}} \ - %{pg: \ - %{!pthread:-lc_p} \ - %{pthread:-lc_r_p}} \ - }" -#endif +#define LIB_SPEC FBSD_LIB_SPEC /************************[ Target stuff ]***********************************/ /* All FreeBSD Architectures support the ELF object file format. */ #undef OBJECT_FORMAT_ELF -#define OBJECT_FORMAT_ELF +#define OBJECT_FORMAT_ELF 1 /* Don't assume anything about the header files. */ #undef NO_IMPLICIT_EXTERN_C -#define NO_IMPLICIT_EXTERN_C - -/* Implicit library calls should use memcpy, not bcopy, etc. */ -#undef TARGET_MEM_FUNCTIONS -#define TARGET_MEM_FUNCTIONS +#define NO_IMPLICIT_EXTERN_C 1 /* Allow #sccs in preprocessor. */ #undef SCCS_DIRECTIVE -#define SCCS_DIRECTIVE +#define SCCS_DIRECTIVE 1 -#undef HAVE_ATEXIT -#define HAVE_ATEXIT +/* Make gcc agree with FreeBSD's standard headers (, etc...) */ -/* Code generation parameters. */ +#undef WCHAR_TYPE +#define WCHAR_TYPE "int" + +#undef WCHAR_UNSIGNED +#define WCHAR_UNSIGNED 0 + +#ifdef FREEBSD_NATIVE +#define LIBSTDCXX_PROFILE "-lstdc++_p" +#endif +#define MATH_LIBRARY_PROFILE "-lm_p" -/* 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 -#define DEFAULT_PCC_STRUCT_RETURN 0 +/* Code generation parameters. */ /* Writing `int' for a bitfield forces int alignment for the structure. */ /* XXX: ok for Alpha?? */ @@ -141,395 +97,13 @@ Boston, MA 02111-1307, USA. */ with libraries compiled with the native cc. */ #undef NO_DOLLAR_IN_LABEL -/* 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. */ - -#undef USER_LABEL_PREFIX -#define USER_LABEL_PREFIX "" - -/* Handle #pragma weak and #pragma pack. */ -#undef HANDLE_SYSV_PRAGMA -#define HANDLE_SYSV_PRAGMA - -#ifdef WANT_DWARF2_UNWIND -/* FreeBSD ELF uses across the board will now use DWARF2 unwinding as the IA-64 - psABI requires it. */ -#define DWARF2_UNWIND_INFO 1 -#else -/* Maintain compatibility with the FreeBSD {3,4}.x C++ ABI. */ -#define DWARF2_UNWIND_INFO 0 -#endif - -/* Do not use ``thunks'' to implement C++ vtables. This method still has - fatal bugs. Also, GCC 3.0 will have a new C++ ABI that may not even - support `thunks'. */ -#undef DEFAULT_VTABLE_THUNKS +/* Used by libgcc2.c. We support file locking with fcntl / F_SETLKW. + This enables the test coverage code to use file locking when exiting a + program, which avoids race conditions if the program has forked. */ +#define TARGET_HAS_F_SETLKW 1 /************************[ Assembler stuff ]********************************/ -/* Override the default comment-starter of "/". */ -#undef ASM_COMMENT_START -#define ASM_COMMENT_START "#" - -/* Attach a special .ident directive to the end of the file to identify - the version of GCC which compiled this code. The format of the .ident - string is patterned after the ones produced by native SVR4 C compilers. */ - -#undef IDENT_ASM_OP -#define IDENT_ASM_OP "\t.ident\t" - -/* Output #ident as a .ident. */ - -#undef ASM_OUTPUT_IDENT -#define ASM_OUTPUT_IDENT(FILE, NAME) \ - fprintf ((FILE), "%s\"%s\"\n", IDENT_ASM_OP, (NAME)); - -/* Identify the front-end which produced this file. To keep symbol - space down, and not confuse kdb, only do this if the language is - not C. (svr4.h defines ASM_IDENTIFY_GCC but neglects this) */ - -#undef ASM_IDENTIFY_LANGUAGE -#define ASM_IDENTIFY_LANGUAGE(FILE) \ - { \ - if (strcmp (lang_identify (), "c") != 0) \ - output_lang_identify (FILE); \ - } - -#undef ASM_FILE_END -#define ASM_FILE_END(FILE) \ - do { \ - if (!flag_no_ident) \ - fprintf ((FILE), "%s\"[ASM_FILE_END]GCC: (%s) %s\"\n", \ - IDENT_ASM_OP, lang_identify(), version_string); \ - } while (0) - -/* This is the pseudo-op used to generate a contiguous sequence of byte - values from a double-quoted string WITHOUT HAVING A TERMINATING NUL - AUTOMATICALLY APPENDED. This is the same for most SVR4 assemblers. */ - -#undef ASCII_DATA_ASM_OP -#define ASCII_DATA_ASM_OP "\t.ascii\t" - -#undef ASM_BYTE_OP -#define ASM_BYTE_OP "\t.byte\t" - -/* This is how to allocate empty space in some section. The .zero - pseudo-op is used for this on most ELF assemblers. */ - -#undef SKIP_ASM_OP -#define SKIP_ASM_OP "\t.zero\t" - -/* A table of bytes codes used by the ASM_OUTPUT_ASCII and - ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table - corresponds to a particular byte value [0..255]. For any - given byte value, if the value in the corresponding table - position is zero, the given character can be output directly. - If the table value is 1, the byte must be output as a \ooo - octal escape. If the tables value is anything else, then the - byte value should be output as a \ followed by the value - in the table. Note that we can use standard UN*X escape - sequences for many control characters, but we don't use - \a to represent BEL because some SVR4 assemblers (e.g. on - the i386) don't know about that. Also, we don't use \v - since some versions of gas, such as 2.2 did not accept it. */ - -#define ESCAPES \ -"\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\ -\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\ -\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\ -\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\ -\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\ -\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\ -\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\ -\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" - -/* Some SVR4 assemblers have a limit on the number of characters which - can appear in the operand of a .string directive. If your assembler - has such a limitation, you should define STRING_LIMIT to reflect that - limit. Note that at least some SVR4 assemblers have a limit on the - actual number of bytes in the double-quoted string, and that they - count each character in an escape sequence as one byte. Thus, an - escape sequence like \377 would count as four bytes. - - If your target assembler doesn't support the .string directive, you - should define this to zero. -*/ - -#undef STRING_LIMIT -#define STRING_LIMIT ((unsigned) 256) - -#undef STRING_ASM_OP -#define STRING_ASM_OP "\t.string\t" - -/* Output the label which precedes a jumptable. Note that for all svr4/ELF - systems where we actually generate jumptables (which is to say every - SVR4 target except i386, where we use casesi instead) we put the jump- - tables into the .rodata section and since other stuff could have been - put into the .rodata section prior to any given jumptable, we have to - make sure that the location counter for the .rodata section gets pro- - perly re-aligned prior to the actual beginning of the jump table. */ - -#undef ALIGN_ASM_OP -#define ALIGN_ASM_OP "\t.align\t" - -/* This says how to output assembler code to declare an - uninitialized external linkage data object. Under SVR4/ELF, - the linker seems to want the alignment of data objects - to depend on their types. We do exactly that here. */ - -#undef COMMON_ASM_OP -#define COMMON_ASM_OP "\t.comm\t" - -/* This says how to output assembler code to declare an - uninitialized internal linkage data object. Under SVR4/ELF, - the linker seems to want the alignment of data objects - to depend on their types. We do exactly that here. */ - -#undef LOCAL_ASM_OP -#define LOCAL_ASM_OP "\t.local\t" - -#undef ASM_OUTPUT_BEFORE_CASE_LABEL -#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \ - ASM_OUTPUT_ALIGN ((FILE), 2); - -#undef ASM_OUTPUT_CASE_LABEL -#define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \ - do { \ - ASM_OUTPUT_BEFORE_CASE_LABEL ((FILE), (PREFIX), (NUM), (JUMPTABLE)) \ - ASM_OUTPUT_INTERNAL_LABEL ((FILE), (PREFIX), (NUM)); \ - } while (0) - -/* The standard SVR4/ELF assembler seems to require that certain builtin - library routines (e.g. .udiv) be explicitly declared as .globl - in each assembly file where they are referenced. */ - -#undef ASM_OUTPUT_EXTERNAL_LIBCALL -#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \ - ASM_GLOBALIZE_LABEL ((FILE), XSTR ((FUN), 0)) - -/* Support const sections and the ctors and dtors sections for g++. - Note that there appears to be two different ways to support const - sections at the moment. You can either #define the symbol - READONLY_DATA_SECTION (giving it some code which switches to the - readonly data section) or else you can #define the symbols - EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and - SELECT_RTX_SECTION. We do both here just to be on the safe side. - FreeBSD conditionalizes the use of ".section rodata" depending on - ELF mode - otherwise .text. */ - -#undef USE_CONST_SECTION -#define USE_CONST_SECTION TARGET_ELF - -#undef CONST_SECTION_ASM_OP -#define CONST_SECTION_ASM_OP "\t.section\t.rodata" - -/* Define the pseudo-ops used to switch to the .ctors and .dtors sections. - - Note that we want to give these sections the SHF_WRITE attribute - because these sections will actually contain data (i.e. tables of - addresses of functions in the current root executable or shared library - file) and, in the case of a shared library, the relocatable addresses - will have to be properly resolved/relocated (and then written into) by - the dynamic linker when it actually attaches the given shared library - to the executing process. (Note that on SVR4, you may wish to use the - `-z text' option to the ELF linker, when building a shared library, as - an additional check that you are doing everything right. But if you do - use the `-z text' option when building a shared library, you will get - errors unless the .ctors and .dtors sections are marked as writable - via the SHF_WRITE attribute.) */ - -#undef CTORS_SECTION_ASM_OP -#define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"aw\"" -#undef DTORS_SECTION_ASM_OP -#define DTORS_SECTION_ASM_OP "\t.section\t.dtors,\"aw\"" - -/* On SVR4, we *do* have support for the .init and .fini sections, and we - can put stuff in there to be executed before and after `main'. We let - crtstuff.c and other files know this by defining the following symbols. - The definitions say how to change sections to the .init and .fini - sections. This is the same for all known SVR4 assemblers. */ - -#undef INIT_SECTION_ASM_OP -#define INIT_SECTION_ASM_OP "\t.section\t.init" -#undef FINI_SECTION_ASM_OP -#define FINI_SECTION_ASM_OP "\t.section\t.fini" - -/* A default list of other sections which we might be "in" at any given - time. For targets that use additional sections (e.g. .tdesc) you - should override this definition in the target-specific file which - includes this file. */ - -#undef EXTRA_SECTIONS -#define EXTRA_SECTIONS in_const, in_ctors, in_dtors - -/* A default list of extra section function definitions. For targets - that use additional sections (e.g. .tdesc) you should override this - definition in the target-specific file which includes this file. */ - -#undef EXTRA_SECTION_FUNCTIONS -#define EXTRA_SECTION_FUNCTIONS \ - CONST_SECTION_FUNCTION \ - CTORS_SECTION_FUNCTION \ - DTORS_SECTION_FUNCTION - -#undef READONLY_DATA_SECTION -#define READONLY_DATA_SECTION() const_section () - -extern void text_section (); - -#undef CONST_SECTION_FUNCTION -#define CONST_SECTION_FUNCTION \ - void \ - const_section () \ - { \ - if (!USE_CONST_SECTION) \ - 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 -- cgit v1.1