gcc/config/i386/beos-elf.h

   1 /* Definitions for Intel x86 running BeOS
   2    Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU CC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 #include <i386/i386.h>  /* Base i386 target machine definitions */
  22 #include <i386/att.h>   /* Use the i386 AT&T assembler syntax */
  23 #include <svr4.h>       /* some common stuff */
  24
  25 #undef TARGET_VERSION
  26 #define TARGET_VERSION fprintf (stderr, " (i386 BeOS/ELF)");
  27
  28 /* Change debugging to Dwarf2.  */
  29 #undef PREFERRED_DEBUGGING_TYPE
  30 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  31
  32 /* The SVR4 ABI for the i386 says that records and unions are returned
  33    in memory.  */
  34 #undef DEFAULT_PCC_STRUCT_RETURN
  35 #define DEFAULT_PCC_STRUCT_RETURN 1
  36
  37 #undef ASM_COMMENT_START
  38 #define ASM_COMMENT_START " #"
  39
  40 /* This is how to output an element of a case-vector that is relative.
  41    This is only used for PIC code.  See comments by the `casesi' insn in
  42    i386.md for an explanation of the expression this outputs. */
  43 #undef ASM_OUTPUT_ADDR_DIFF_ELT
  44 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
  45   fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
  46
  47 /* Indicate that jump tables go in the text section.  This is
  48    necessary when compiling PIC code.  */
  49 #define JUMP_TABLES_IN_TEXT_SECTION (flag_pic)
  50
  51 #undef DBX_REGISTER_NUMBER
  52 #define DBX_REGISTER_NUMBER(n) \
  53   (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
  54
  55 /* Output assembler code to FILE to increment profiler label # LABELNO
  56    for profiling a function entry.  */
  57
  58 #undef FUNCTION_PROFILER
  59 #define FUNCTION_PROFILER(FILE, LABELNO)  \
  60 {                                                                       \
  61   if (flag_pic)                                                         \
  62     {                                                                   \
  63       fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%edx\n",              \
  64                LPREFIX, (LABELNO));                                     \
  65       fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n");                    \
  66     }                                                                   \
  67   else                                                                  \
  68     {                                                                   \
  69       fprintf (FILE, "\tmovl $%sP%d,%%edx\n", LPREFIX, (LABELNO));      \
  70       fprintf (FILE, "\tcall mcount\n");                                \
  71     }                                                                   \
  72 }
  73
  74 #undef SIZE_TYPE
  75 #define SIZE_TYPE "long unsigned int"
  76
  77 #undef PTRDIFF_TYPE
  78 #define PTRDIFF_TYPE "long int"
  79
  80 #undef WCHAR_TYPE
  81 #define WCHAR_TYPE "short unsigned int"
  82
  83 #undef WCHAR_UNSIGNED
  84 #define WCHAR_UNSIGNED 1
  85
  86 #undef WCHAR_TYPE_SIZE
  87 #define WCHAR_TYPE_SIZE 16
  88
  89 #undef CPP_PREDEFINES
  90 #define CPP_PREDEFINES "-D__ELF__ -D__BEOS__ -D__INTEL__ -D_X86_=1 \
  91 -D__stdcall=__attribute__((__stdcall__)) \
  92 -D__cdecl=__attribute__((__cdecl__)) \
  93 -D__declspec(x)=__attribute__((x)) \
  94 -Asystem=beos"
  95
  96 #undef CPP_SPEC
  97 #define CPP_SPEC "%(cpp_cpu) %{!no-fPIC:%{!no-fpic:-D__PIC__ -D__pic__}}"
  98
  99 /* BeOS uses lots of multichars, so don't warn about them unless the
 100    user explicitly asks for the warnings with -Wmultichar.  Note that
 101    CC1_SPEC is used for both cc1 and cc1plus. */
 102
 103 #undef CC1_SPEC
 104 #define CC1_SPEC "%{!no-fpic:%{!fPIC:-fpic}} %{!Wmultichar: -Wno-multichar} %(cc1_cpu) %{profile:-p}"
 105
 106 #undef CC1PLUS_SPEC
 107 #define CC1PLUS_SPEC "%{!Wctor-dtor-privacy:-Wno-ctor-dtor-privacy}"
 108
 109 /* Provide a LINK_SPEC appropriate for BeOS.  Here we provide support
 110    for the special GCC options -static and -shared, which allow us to
 111    link things in one of these three modes by applying the appropriate
 112    combinations of options at link-time. */
 113
 114 /* If ELF is the default format, we should not use /lib/elf. */
 115
 116 #undef  LINK_SPEC
 117 #define LINK_SPEC "%{!o*:-o %b} -m elf_i386_be -shared -Bsymbolic %{nostart:-e 0}"
 118
 119 /* Provide start and end file specs appropriate to glibc.  */
 120
 121 /* LIB_SPEC for BeOS */
 122 #undef LIB_SPEC
 123 #define LIB_SPEC "-lnet -lroot"
 124
 125 /* gcc runtime lib is built into libroot.so on BeOS */
 126 /* ??? This is gonna be lovely when the next release of gcc has
 127    some new symbol in, so that links start failing.  */
 128 #undef LIBGCC_SPEC
 129 #define LIBGCC_SPEC ""
 130
 131 #undef  STARTFILE_SPEC
 132 #define STARTFILE_SPEC "crti.o%s crtbegin.o%s %{!nostart:start_dyn.o%s} init_term_dyn.o%s %{p:i386-mcount.o%s}"
 133
 134 #undef  ENDFILE_SPEC
 135 #define ENDFILE_SPEC "crtend.o%s crtn.o%s"
 136
 137 /* A C statement (sans semicolon) to output to the stdio stream
 138    FILE the assembler definition of uninitialized global DECL named
 139    NAME whose size is SIZE bytes and alignment is ALIGN bytes.
 140    Try to use asm_output_aligned_bss to implement this macro.  */
 141
 142 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
 143   asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
 144
 145 /* A C statement to output to the stdio stream FILE an assembler
 146    command to advance the location counter to a multiple of 1<<LOG
 147    bytes if it is within MAX_SKIP bytes.
 148
 149    This is used to align code labels according to Intel recommendations.  */
 150
 151 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
 152 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
 153   if ((LOG)!=0) \
 154     if ((MAX_SKIP)==0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
 155     else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP))
 156 #endif
 157
 158 /* For native compiler, use standard BeOS include file search paths
 159    rooted in /boot/develop/headers.  For a cross compiler, don't
 160    expect the host to use the BeOS directory scheme, and instead look
 161    for the BeOS include files relative to TOOL_INCLUDE_DIR.  Yes, we
 162    use ANSI string concatenation here (FIXME) */
 163
 164 #ifndef CROSS_COMPILE
 165 #undef INCLUDE_DEFAULTS
 166 #define INCLUDE_DEFAULTS \
 167     { \
 168     { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },\
 169     { GCC_INCLUDE_DIR, "GCC", 0, 0 },\
 170     { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1}, \
 171     { "/boot/develop/headers/be/add-ons/graphics", 0, 0, 0 },\
 172     { "/boot/develop/headers/be/devel", 0, 0, 0 },\
 173     { "/boot/develop/headers/be/translation", 0, 0, 0 },\
 174     { "/boot/develop/headers/be/mail", 0, 0, 0 },\
 175     { "/boot/develop/headers/gnu", 0, 0, 0 },\
 176     { "/boot/develop/headers/be/drivers", 0, 0, 0 },\
 177     { "/boot/develop/headers/be/opengl", 0, 0, 0 },\
 178     { "/boot/develop/headers/be/game", 0, 0, 0 },\
 179     { "/boot/develop/headers/be/support", 0, 0, 0 },\
 180     { "/boot/develop/headers/be/storage", 0, 0, 0 },\
 181     { "/boot/develop/headers/be/kernel", 0, 0, 0 },\
 182     { "/boot/develop/headers/be/net", 0, 0, 0 },\
 183     { "/boot/develop/headers/be/midi", 0, 0, 0 },\
 184     { "/boot/develop/headers/be/midi2", 0, 0, 0 },\
 185     { "/boot/develop/headers/be/media", 0, 0, 0 },\
 186     { "/boot/develop/headers/be/interface", 0, 0, 0 },\
 187     { "/boot/develop/headers/be/device", 0, 0, 0 },\
 188     { "/boot/develop/headers/be/app", 0, 0, 0 },\
 189     { "/boot/develop/headers/be/precompiled", 0, 0, 0 },\
 190     { "/boot/develop/headers/be/add-ons/input_server", 0, 0, 0 },\
 191     { "/boot/develop/headers/be/add-ons/net_server", 0, 0, 0 },\
 192     { "/boot/develop/headers/be/add-ons/screen_saver", 0, 0, 0 },\
 193     { "/boot/develop/headers/be/add-ons/tracker", 0, 0, 0 },\
 194     { "/boot/develop/headers/be/be_apps/Deskbar", 0, 0, 0 },\
 195     { "/boot/develop/headers/be/be_apps/NetPositive", 0, 0, 0 },\
 196     { "/boot/develop/headers/be/be_apps/Tracker", 0, 0, 0 },\
 197     { "/boot/develop/headers/be/drivers/tty", 0, 0, 0 },\
 198     { "/boot/develop/headers/be/net/netinet", 0, 0, 0 },\
 199     { "/boot/develop/headers/be/storage", 0, 0, 0 },\
 200     { "/boot/develop/headers/be", 0, 0, 0 },\
 201     { "/boot/develop/headers/cpp", 0, 0, 0 },\
 202     { "/boot/develop/headers/posix", 0, 0, 0 },\
 203     { "/boot/develop/headers", 0, 0, 0 }, \
 204     { 0, 0, 0, 0 } \
 205     };
 206 #else /* CROSS_COMPILE */
 207 #undef  INCLUDE_DEFAULTS
 208 #define INCLUDE_DEFAULTS                                \
 209     { \
 210     { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },\
 211     { GCC_INCLUDE_DIR, "GCC", 0, 0 },\
 212     { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1}, \
 213     { CROSS_INCLUDE_DIR "/be/add-ons/graphics", 0, 0, 0 },\
 214     { CROSS_INCLUDE_DIR "/be/devel", 0, 0, 0 },\
 215     { CROSS_INCLUDE_DIR "/be/translation", 0, 0, 0 },\
 216     { CROSS_INCLUDE_DIR "/be/mail", 0, 0, 0 },\
 217     { CROSS_INCLUDE_DIR "/gnu", 0, 0, 0 },\
 218     { CROSS_INCLUDE_DIR "/be/drivers", 0, 0, 0 },\
 219     { CROSS_INCLUDE_DIR "/be/opengl", 0, 0, 0 },\
 220     { CROSS_INCLUDE_DIR "/be/game", 0, 0, 0 },\
 221     { CROSS_INCLUDE_DIR "/be/support", 0, 0, 0 },\
 222     { CROSS_INCLUDE_DIR "/be/storage", 0, 0, 0 },\
 223     { CROSS_INCLUDE_DIR "/be/kernel", 0, 0, 0 },\
 224     { CROSS_INCLUDE_DIR "/be/net", 0, 0, 0 },\
 225     { CROSS_INCLUDE_DIR "/be/midi", 0, 0, 0 },\
 226     { CROSS_INCLUDE_DIR "/be/midi2", 0, 0, 0 },\
 227     { CROSS_INCLUDE_DIR "/be/media", 0, 0, 0 },\
 228     { CROSS_INCLUDE_DIR "/be/interface", 0, 0, 0 },\
 229     { CROSS_INCLUDE_DIR "/be/device", 0, 0, 0 },\
 230     { CROSS_INCLUDE_DIR "/be/app", 0, 0, 0 },\
 231     { CROSS_INCLUDE_DIR "/be/precompiled", 0, 0, 0 },\
 232     { CROSS_INCLUDE_DIR "/be/add-ons/input_server", 0, 0, 0 },\
 233     { CROSS_INCLUDE_DIR "/be/add-ons/net_server", 0, 0, 0 },\
 234     { CROSS_INCLUDE_DIR "/be/add-ons/screen_saver", 0, 0, 0 },\
 235     { CROSS_INCLUDE_DIR "/be/add-ons/tracker", 0, 0, 0 },\
 236     { CROSS_INCLUDE_DIR "/be/be_apps/Deskbar", 0, 0, 0 },\
 237     { CROSS_INCLUDE_DIR "/be/be_apps/NetPositive", 0, 0, 0 },\
 238     { CROSS_INCLUDE_DIR "/be/be_apps/Tracker", 0, 0, 0 },\
 239     { CROSS_INCLUDE_DIR "/be/drivers/tty", 0, 0, 0 },\
 240     { CROSS_INCLUDE_DIR "/be/net/netinet", 0, 0, 0 },\
 241     { CROSS_INCLUDE_DIR "/be/storage", 0, 0, 0 },\
 242     { CROSS_INCLUDE_DIR "/be", 0, 0, 0 },\
 243     { CROSS_INCLUDE_DIR "/cpp", 0, 0, 0 },\
 244     { CROSS_INCLUDE_DIR "/posix", 0, 0, 0 },\
 245     { CROSS_INCLUDE_DIR , 0, 0, 0 }, \
 246     { 0, 0, 0, 0 } \
 247     };
 248 #endif
 249
 250 /* Whee.  LIBRARY_PATH is Be's LD_LIBRARY_PATH, which of course will
 251    cause nasty problems if we override it.  */
 252 #define LIBRARY_PATH_ENV        "BELIBRARIES"
 253
 254 /* BeOS doesn't have a separate math library.  */
 255 #define MATH_LIBRARY ""
 256
 257 /* BeOS headers are C++-aware (and often use C++).  */
 258 #define NO_IMPLICIT_EXTERN_C
 259
 260 /* Define this macro if in some cases global symbols from one translation
 261    unit may not be bound to undefined symbols in another translation unit
 262    without user intervention.  For instance, under Microsoft Windows
 263    symbols must be explicitly imported from shared libraries (DLLs).  */
 264 #define MULTIPLE_SYMBOL_SPACES