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 /* Implicit library calls should use memcpy, not bcopy, etc.  */
  70
  71 #undef TARGET_MEM_FUNCTIONS
  72 #define TARGET_MEM_FUNCTIONS 1
  73
  74 /* Handle #pragma weak and #pragma pack.  */
  75
  76 #define HANDLE_SYSV_PRAGMA
  77 \f
  78 /*
  79  * Some imports from svr4.h in support of shared libraries.
  80  * Currently, we need the DECLARE_OBJECT_SIZE stuff.
  81  */
  82
  83 /* Define the strings used for the .type, .size, and .set directives.
  84    These strings generally do not vary from one system running netbsd
  85    to another, but if a given system needs to use different pseudo-op
  86    names for these, they may be overridden in the file which includes
  87    this one.  */
  88
  89 #undef TYPE_ASM_OP
  90 #undef SIZE_ASM_OP
  91 #undef SET_ASM_OP
  92 #define TYPE_ASM_OP     "\t.type\t"
  93 #define SIZE_ASM_OP     "\t.size\t"
  94 #define SET_ASM_OP      "\t.set\t"
  95
  96 /* This is how we tell the assembler that a symbol is weak.  */
  97
  98 #undef ASM_WEAKEN_LABEL
  99 #define ASM_WEAKEN_LABEL(FILE,NAME) \
 100   do { fputs ("\t.globl\t", FILE); assemble_name (FILE, NAME); \
 101        fputc ('\n', FILE); \
 102        fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
 103        fputc ('\n', FILE); } while (0)
 104
 105 /* The following macro defines the format used to output the second
 106    operand of the .type assembler directive.  Different svr4 assemblers
 107    expect various different forms for this operand.  The one given here
 108    is just a default.  You may need to override it in your machine-
 109    specific tm.h file (depending upon the particulars of your assembler).  */
 110
 111 #undef TYPE_OPERAND_FMT
 112 #define TYPE_OPERAND_FMT        "@%s"
 113
 114 /* Write the extra assembler code needed to declare a function's result.
 115    Most svr4 assemblers don't require any special declaration of the
 116    result value, but there are exceptions.  */
 117
 118 #ifndef ASM_DECLARE_RESULT
 119 #define ASM_DECLARE_RESULT(FILE, RESULT)
 120 #endif
 121
 122 /* These macros generate the special .type and .size directives which
 123    are used to set the corresponding fields of the linker symbol table
 124    entries in an ELF object file under SVR4.  These macros also output
 125    the starting labels for the relevant functions/objects.  */
 126
 127 /* Write the extra assembler code needed to declare a function properly.
 128    Some svr4 assemblers need to also have something extra said about the
 129    function's return value.  We allow for that here.  */
 130
 131 #undef ASM_DECLARE_FUNCTION_NAME
 132 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 133   do {                                                                  \
 134     fprintf (FILE, "%s", TYPE_ASM_OP);                                  \
 135     assemble_name (FILE, NAME);                                         \
 136     putc (',', FILE);                                                   \
 137     fprintf (FILE, TYPE_OPERAND_FMT, "function");                       \
 138     putc ('\n', FILE);                                                  \
 139     ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));                      \
 140     ASM_OUTPUT_LABEL(FILE, NAME);                                       \
 141   } while (0)
 142
 143 /* Write the extra assembler code needed to declare an object properly.  */
 144
 145 #undef ASM_DECLARE_OBJECT_NAME
 146 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 147   do {                                                                  \
 148     fprintf (FILE, "%s", TYPE_ASM_OP);                                  \
 149     assemble_name (FILE, NAME);                                         \
 150     putc (',', FILE);                                                   \
 151     fprintf (FILE, TYPE_OPERAND_FMT, "object");                         \
 152     putc ('\n', FILE);                                                  \
 153     size_directive_output = 0;                                          \
 154     if (!flag_inhibit_size_directive && DECL_SIZE (DECL))               \
 155       {                                                                 \
 156         size_directive_output = 1;                                      \
 157         fprintf (FILE, "%s", SIZE_ASM_OP);                              \
 158         assemble_name (FILE, NAME);                                     \
 159         fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL))); \
 160       }                                                                 \
 161     ASM_OUTPUT_LABEL(FILE, NAME);                                       \
 162   } while (0)
 163
 164 /* Output the size directive for a decl in rest_of_decl_compilation
 165    in the case where we did not do so before the initializer.
 166    Once we find the error_mark_node, we know that the value of
 167    size_directive_output was set
 168    by ASM_DECLARE_OBJECT_NAME when it was run for the same decl.  */
 169
 170 #undef ASM_FINISH_DECLARE_OBJECT
 171 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 172 do {                                                                     \
 173      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 174      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 175          && ! AT_END && TOP_LEVEL                                        \
 176          && DECL_INITIAL (DECL) == error_mark_node                       \
 177          && !size_directive_output)                                      \
 178        {                                                                 \
 179          size_directive_output = 1;                                      \
 180          fprintf (FILE, "%s", SIZE_ASM_OP);                              \
 181          assemble_name (FILE, name);                                     \
 182          fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL))); \
 183        }                                                                 \
 184    } while (0)
 185
 186 /* This is how to declare the size of a function.  */
 187
 188 #undef ASM_DECLARE_FUNCTION_SIZE
 189 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 190   do {                                                                  \
 191     if (!flag_inhibit_size_directive)                                   \
 192       {                                                                 \
 193         char label[256];                                                \
 194         static int labelno;                                             \
 195         labelno++;                                                      \
 196         ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno);            \
 197         ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno);               \
 198         fprintf (FILE, "%s", SIZE_ASM_OP);                              \
 199         assemble_name (FILE, (FNAME));                                  \
 200         fprintf (FILE, ",");                                            \
 201         assemble_name (FILE, label);                                    \
 202         fprintf (FILE, "-");                                            \
 203         assemble_name (FILE, (FNAME));                                  \
 204         putc ('\n', FILE);                                              \
 205       }                                                                 \
 206   } while (0)