contrib/gcc/config/netbsd.h

   1 /* NETBSD_NATIVE is defined when gcc is integrated into the NetBSD
   2    source tree so it can be configured appropriately without using
   3    the GNU configure/build mechanism. */
   4
   5 #ifdef NETBSD_NATIVE
   6
   7 /* Look for the include files in the system-defined places.  */
   8
   9 #undef GPLUSPLUS_INCLUDE_DIR
  10 #define GPLUSPLUS_INCLUDE_DIR "/usr/include/g++"
  11
  12 #undef GCC_INCLUDE_DIR
  13 #define GCC_INCLUDE_DIR "/usr/include"
  14
  15 #undef INCLUDE_DEFAULTS
  16 #define INCLUDE_DEFAULTS                        \
  17   {                                             \
  18     { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },     \
  19     { GCC_INCLUDE_DIR, "GCC", 0, 0 },           \
  20     { 0, 0, 0, 0 }                              \
  21   }
  22
  23 /* Under NetBSD, the normal location of the compiler back ends is the
  24    /usr/libexec directory.  */
  25
  26 #undef STANDARD_EXEC_PREFIX
  27 #define STANDARD_EXEC_PREFIX            "/usr/libexec/"
  28
  29 /* Under NetBSD, the normal location of the various *crt*.o files is the
  30    /usr/lib directory.  */
  31
  32 #undef STANDARD_STARTFILE_PREFIX
  33 #define STANDARD_STARTFILE_PREFIX       "/usr/lib/"
  34
  35 #endif
  36
  37
  38 /* Provide a CPP_SPEC appropriate for NetBSD.  Current we just deal with
  39    the GCC option `-posix'.  */
  40
  41 #undef CPP_SPEC
  42 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
  43
  44 /* Provide an ASM_SPEC appropriate for NetBSD.  Currently we only deal
  45    with the options for generating PIC code.  */
  46
  47 #undef ASM_SPEC
  48 #define ASM_SPEC " %| %{fpic:-k} %{fPIC:-k -K}"
  49
  50 /* Provide a LIB_SPEC appropriate for NetBSD.  Just select the appropriate
  51    libc, depending on whether we're doing profiling.  */
  52
  53 #undef LIB_SPEC
  54 #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
  55
  56 /* Provide a LINK_SPEC appropriate for NetBSD.  Here we provide support
  57    for the special GCC options -static, -assert, and -nostdlib.  */
  58
  59 #undef LINK_SPEC
  60 #define LINK_SPEC \
  61   "%{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{R*} %{static:-Bstatic} %{assert*}"
  62
  63 /* This defines which switch letters take arguments. */
  64 #undef SWITCH_TAKES_ARG
  65 #define SWITCH_TAKES_ARG(CHAR) \
  66   (DEFAULT_SWITCH_TAKES_ARG(CHAR) \
  67    || (CHAR) == 'R')
  68
  69 /* We have atexit(3).  */
  70
  71 #define HAVE_ATEXIT
  72
  73 /* Implicit library calls should use memcpy, not bcopy, etc.  */
  74
  75 #define TARGET_MEM_FUNCTIONS
  76
  77 /* Handle #pragma weak and #pragma pack.  */
  78
  79 #define HANDLE_SYSV_PRAGMA
  80 \f
  81 /*
  82  * Some imports from svr4.h in support of shared libraries.
  83  * Currently, we need the DECLARE_OBJECT_SIZE stuff.
  84  */
  85
  86 /* Define the strings used for the .type, .size, and .set directives.
  87    These strings generally do not vary from one system running netbsd
  88    to another, but if a given system needs to use different pseudo-op
  89    names for these, they may be overridden in the file which includes
  90    this one.  */
  91
  92 #undef TYPE_ASM_OP
  93 #undef SIZE_ASM_OP
  94 #undef SET_ASM_OP
  95 #define TYPE_ASM_OP     ".type"
  96 #define SIZE_ASM_OP     ".size"
  97 #define SET_ASM_OP      ".set"
  98
  99 /* This is how we tell the assembler that a symbol is weak.  */
 100
 101 #undef ASM_WEAKEN_LABEL
 102 #define ASM_WEAKEN_LABEL(FILE,NAME) \
 103   do { fputs ("\t.globl\t", FILE); assemble_name (FILE, NAME); \
 104        fputc ('\n', FILE); \
 105        fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
 106        fputc ('\n', FILE); } while (0)
 107
 108 /* The following macro defines the format used to output the second
 109    operand of the .type assembler directive.  Different svr4 assemblers
 110    expect various different forms for this operand.  The one given here
 111    is just a default.  You may need to override it in your machine-
 112    specific tm.h file (depending upon the particulars of your assembler).  */
 113
 114 #undef TYPE_OPERAND_FMT
 115 #define TYPE_OPERAND_FMT        "@%s"
 116
 117 /* Write the extra assembler code needed to declare a function's result.
 118    Most svr4 assemblers don't require any special declaration of the
 119    result value, but there are exceptions.  */
 120
 121 #ifndef ASM_DECLARE_RESULT
 122 #define ASM_DECLARE_RESULT(FILE, RESULT)
 123 #endif
 124
 125 /* These macros generate the special .type and .size directives which
 126    are used to set the corresponding fields of the linker symbol table
 127    entries in an ELF object file under SVR4.  These macros also output
 128    the starting labels for the relevant functions/objects.  */
 129
 130 /* Write the extra assembler code needed to declare a function properly.
 131    Some svr4 assemblers need to also have something extra said about the
 132    function's return value.  We allow for that here.  */
 133
 134 #undef ASM_DECLARE_FUNCTION_NAME
 135 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 136   do {                                                                  \
 137     fprintf (FILE, "\t%s\t ", TYPE_ASM_OP);                             \
 138     assemble_name (FILE, NAME);                                         \
 139     putc (',', FILE);                                                   \
 140     fprintf (FILE, TYPE_OPERAND_FMT, "function");                       \
 141     putc ('\n', FILE);                                                  \
 142     ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));                      \
 143     ASM_OUTPUT_LABEL(FILE, NAME);                                       \
 144   } while (0)
 145
 146 /* Write the extra assembler code needed to declare an object properly.  */
 147
 148 #undef ASM_DECLARE_OBJECT_NAME
 149 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 150   do {                                                                  \
 151     fprintf (FILE, "\t%s\t ", TYPE_ASM_OP);                             \
 152     assemble_name (FILE, NAME);                                         \
 153     putc (',', FILE);                                                   \
 154     fprintf (FILE, TYPE_OPERAND_FMT, "object");                         \
 155     putc ('\n', FILE);                                                  \
 156     size_directive_output = 0;                                          \
 157     if (!flag_inhibit_size_directive && DECL_SIZE (DECL))               \
 158       {                                                                 \
 159         size_directive_output = 1;                                      \
 160         fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);                         \
 161         assemble_name (FILE, NAME);                                     \
 162         fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL))); \
 163       }                                                                 \
 164     ASM_OUTPUT_LABEL(FILE, NAME);                                       \
 165   } while (0)
 166
 167 /* Output the size directive for a decl in rest_of_decl_compilation
 168    in the case where we did not do so before the initializer.
 169    Once we find the error_mark_node, we know that the value of
 170    size_directive_output was set
 171    by ASM_DECLARE_OBJECT_NAME when it was run for the same decl.  */
 172
 173 #undef ASM_FINISH_DECLARE_OBJECT
 174 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 175 do {                                                                     \
 176      char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);                   \
 177      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 178          && ! AT_END && TOP_LEVEL                                        \
 179          && DECL_INITIAL (DECL) == error_mark_node                       \
 180          && !size_directive_output)                                      \
 181        {                                                                 \
 182          size_directive_output = 1;                                      \
 183          fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);                         \
 184          assemble_name (FILE, name);                                     \
 185          fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL))); \
 186        }                                                                 \
 187    } while (0)
 188
 189 /* This is how to declare the size of a function.  */
 190
 191 #undef ASM_DECLARE_FUNCTION_SIZE
 192 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 193   do {                                                                  \
 194     if (!flag_inhibit_size_directive)                                   \
 195       {                                                                 \
 196         char label[256];                                                \
 197         static int labelno;                                             \
 198         labelno++;                                                      \
 199         ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno);            \
 200         ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno);               \
 201         fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);                         \
 202         assemble_name (FILE, (FNAME));                                  \
 203         fprintf (FILE, ",");                                            \
 204         assemble_name (FILE, label);                                    \
 205         fprintf (FILE, "-");                                            \
 206         assemble_name (FILE, (FNAME));                                  \
 207         putc ('\n', FILE);                                              \
 208       }                                                                 \
 209   } while (0)