gcc/config/i386/osf1elf.h

   1 /* OSF/1 1.3 now is compitable with SVR4, so include sysv4.h, and
   2    put difference here.
   3    Copyright (C) 2000 Free Software Foundation, Inc.  */
   4
   5 #include <stdio.h>
   6
   7 #undef TARGET_VERSION
   8 #define TARGET_VERSION fprintf (stderr, " (i386 OSF/1)");
   9
  10 #define TARGET_OSF1ELF
  11
  12 /* WORD_SWITCH_TAKES_ARG defined in svr4 is not correct. We also
  13  need an extra -soname */
  14 #undef WORD_SWITCH_TAKES_ARG
  15 #define WORD_SWITCH_TAKES_ARG(STR)                    \
  16  (DEFAULT_WORD_SWITCH_TAKES_ARG (STR)                 \
  17   || !strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
  18   || !strcmp (STR, "Tbss") || !strcmp (STR, "soname"))
  19
  20 /* Note, -fpic and -fPIC are equivalent */
  21 #undef  CPP_SPEC
  22 #define CPP_SPEC "\
  23 %(cpp_cpu) \
  24 %{fpic: -D__SHARED__} %{fPIC: %{!fpic: -D__SHARED__}} \
  25 %{.S:   %{!ansi:%{!traditional-cpp: -traditional}}} \
  26 %{.S:   -D__LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
  27 %{.cc:  -D__LANGUAGE_C_PLUS_PLUS} \
  28 %{.cxx: -D__LANGUAGE_C_PLUS_PLUS} \
  29 %{.C:   -D__LANGUAGE_C_PLUS_PLUS} \
  30 %{.m:   -D__LANGUAGE_OBJECTIVE_C} \
  31 %{!.S:  -D__LANGUAGE_C %{!ansi:-DLANGUAGE_C}}"
  32
  33 /* -mmcount or -mno-mcount should be used with -pg or -p */
  34 #undef  CC1_SPEC
  35 #define CC1_SPEC "%(cc1_cpu) %{p: %{!mmcount: %{!mno-mcount: -mno-mcount }}} \
  36 %{!p: %{pg: %{!mmcount: %{!mno-mcount: -mno-mcount }}}}"
  37
  38 /* Note, -D__NO_UNDERSCORES__ -D__ELF__ are provided in the older version of
  39    OSF/1 gcc. We keep them here, so that old /usr/include/i386/asm.h works.
  40    */
  41 #undef CPP_PREDEFINES
  42 #define CPP_PREDEFINES \
  43   "-D__NO_UNDERSCORES__ -D__ELF__ -DOSF -DOSF1 -Dunix \
  44    -Asystem=unix -Asystem=xpg4 -Asystem=osf1"
  45
  46 /* current OSF/1 doesn't provide separate crti.o and gcrti.o (and also, crtn.o
  47    and gcrtn.o) for profile.  */
  48
  49 #undef  STARTFILE_SPEC
  50 #define STARTFILE_SPEC "%{!shared: \
  51                          %{!symbolic: \
  52                           %{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\
  53                         crti.o%s \
  54                         crtbegin.o%s"
  55
  56 #undef  ENDFILE_SPEC
  57 #define ENDFILE_SPEC "crtend.o%s crtn.o%s"
  58
  59 #undef  ASM_SPEC
  60 #define ASM_SPEC       "%{v*: -v}"
  61
  62 #undef  LINK_SPEC
  63 #define LINK_SPEC      "%{v*: -v} \
  64                 %{h*} %{z*} \
  65                 %{dy:-call_shared} %{dn:-static} \
  66                 %{static:-static} \
  67                 %{shared:-shared} \
  68                 %{call_shared:-call_shared} \
  69                 %{symbolic:-Bsymbolic -shared -call_shared} \
  70                 %{!dy: %{!dn: %{!static: %{!shared: %{!symbolic: \
  71                         %{noshrlib: -static } \
  72                         %{!noshrlib: -call_shared}}}}}}"
  73
  74 #undef MD_EXEC_PREFIX
  75 #define MD_EXEC_PREFIX  "/usr/ccs/gcc/"
  76
  77 #undef  MD_STARTFILE_PREFIX
  78 #define MD_STARTFILE_PREFIX     "/usr/ccs/lib/"
  79
  80 /* Define this macro meaning that gcc should find the library 'libgcc.a'
  81    by hand, rather than passing the argument '-lgcc' to tell the linker
  82    to do the search */
  83 #define LINK_LIBGCC_SPECIAL
  84
  85 /* This goes with LINK_LIBGCC_SPECIAL, we need tell libgcc.a differently */
  86 #undef  LIBGCC_SPEC
  87 #define LIBGCC_SPEC "%{!shared:%{!symbolic:libgcc.a%s}}"
  88
  89 /* Specify size_t, ptrdiff_t, and wchar_t types.  */
  90 #undef  SIZE_TYPE
  91 #undef  PTRDIFF_TYPE
  92 #undef  WCHAR_TYPE
  93 #undef  WCHAR_TYPE_SIZE
  94
  95 #define SIZE_TYPE       "long unsigned int"
  96 #define PTRDIFF_TYPE    "int"
  97 #define WCHAR_TYPE      "unsigned int"
  98 #define WCHAR_TYPE_SIZE BITS_PER_WORD
  99
 100 /* Turn off long double being 96 bits.  */
 101 #undef LONG_DOUBLE_TYPE_SIZE
 102 #define LONG_DOUBLE_TYPE_SIZE 64
 103
 104 /* Work with OSF/1 profile */
 105 #define MASK_NO_MCOUNT          000200000000    /* profiling uses mcount_ptr */
 106
 107 #define TARGET_MCOUNT           ((target_flags & MASK_NO_MCOUNT) == 0)
 108
 109 #undef  SUBTARGET_SWITCHES
 110 #define SUBTARGET_SWITCHES                                              \
 111      { "mcount",                -MASK_NO_MCOUNT,                        \
 112        N_("Profiling uses mcount") },                                   \
 113      { "no-mcount",              MASK_NO_MCOUNT, "" },
 114
 115 /* This macro generates the assembly code for function entry.
 116    FILE is a stdio stream to output the code to.
 117    SIZE is an int: how many units of temporary storage to allocate.
 118    Refer to the array `regs_ever_live' to determine which registers
 119    to save; `regs_ever_live[I]' is nonzero if register number I
 120    is ever used in the function.  This macro is responsible for
 121    knowing which registers should not be saved even if used.
 122
 123    We override it here to allow for the new profiling code to go before
 124    the prologue and the old mcount code to go after the prologue (and
 125    after %ebx has been set up for ELF shared library support).  */
 126 #if 0
 127 #define OSF_PROFILE_BEFORE_PROLOGUE                                     \
 128   (!TARGET_MCOUNT                                                       \
 129    && !current_function_needs_context                                   \
 130    && (!flag_pic                                                        \
 131        || !frame_pointer_needed                                         \
 132        || (!current_function_uses_pic_offset_table                      \
 133            && !current_function_uses_const_pool)))
 134 #else
 135 #define OSF_PROFILE_BEFORE_PROLOGUE 0
 136 #endif
 137
 138 /* A C statement or compound statement to output to FILE some assembler code to
 139    call the profiling subroutine `mcount'.  Before calling, the assembler code
 140    must load the address of a counter variable into a register where `mcount'
 141    expects to find the address.  The name of this variable is `LP' followed by
 142    the number LABELNO, so you would generate the name using `LP%d' in a
 143    `fprintf'.
 144
 145    The details of how the address should be passed to `mcount' are determined
 146    by your operating system environment, not by GNU CC.  To figure them out,
 147    compile a small program for profiling using the system's installed C
 148    compiler and look at the assembler code that results.  */
 149
 150 #undef  FUNCTION_PROFILER
 151 #define FUNCTION_PROFILER(FILE, LABELNO)                                \
 152 do                                                                      \
 153   {                                                                     \
 154     if (!OSF_PROFILE_BEFORE_PROLOGUE)                                   \
 155       {                                                                 \
 156         const char *const prefix = "";                                  \
 157         const char *const lprefix = LPREFIX;                            \
 158         int labelno = LABELNO;                                          \
 159                                                                         \
 160         /* Note that OSF/rose blew it in terms of calling mcount,       \
 161            since OSF/rose prepends a leading underscore, but mcount's   \
 162            doesn't.  At present, we keep this kludge for ELF as well    \
 163            to allow old kernels to build profiling.  */                 \
 164                                                                         \
 165         if (flag_pic                                                    \
 166             && !current_function_uses_pic_offset_table                  \
 167             && !current_function_uses_const_pool)                       \
 168           abort ();                                                     \
 169                                                                         \
 170         if (TARGET_MCOUNT && flag_pic)                                  \
 171           {                                                             \
 172             fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%edx\n",        \
 173                      lprefix, labelno);                                 \
 174             fprintf (FILE, "\tcall *%smcount@GOT(%%ebx)\n", prefix);    \
 175           }                                                             \
 176                                                                         \
 177         else if (TARGET_MCOUNT)                                         \
 178           {                                                             \
 179             fprintf (FILE, "\tmovl $%sP%d,%%edx\n", lprefix, labelno);  \
 180             fprintf (FILE, "\tcall %smcount\n", prefix);                \
 181           }                                                             \
 182                                                                         \
 183         else if (flag_pic && frame_pointer_needed)                      \
 184           {                                                             \
 185             fprintf (FILE, "\tmovl 4(%%ebp),%%ecx\n");                  \
 186             fprintf (FILE, "\tpushl %%ecx\n");                          \
 187             fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%edx\n",        \
 188                      lprefix, labelno);                                 \
 189             fprintf (FILE, "\tmovl _mcount_ptr@GOT(%%ebx),%%eax\n");    \
 190             fprintf (FILE, "\tcall *(%%eax)\n");                        \
 191             fprintf (FILE, "\tpopl %%eax\n");                           \
 192           }                                                             \
 193                                                                         \
 194         else if (frame_pointer_needed)                                  \
 195           {                                                             \
 196             fprintf (FILE, "\tmovl 4(%%ebp),%%ecx\n");                  \
 197             fprintf (FILE, "\tpushl %%ecx\n");                          \
 198             fprintf (FILE, "\tmovl $%sP%d,%%edx\n", lprefix, labelno);  \
 199             fprintf (FILE, "\tcall *_mcount_ptr\n");                    \
 200             fprintf (FILE, "\tpopl %%eax\n");                           \
 201           }                                                             \
 202                                                                         \
 203         else                                                            \
 204           abort ();                                                     \
 205       }                                                                 \
 206   }                                                                     \
 207 while (0)