Annotation of gcc/config/netbsd.h, revision 1.1

1.1     ! root        1: /* Look for the include files in the system-defined places.  */
        !             2: 
        !             3: #undef GPLUSPLUS_INCLUDE_DIR
        !             4: #define GPLUSPLUS_INCLUDE_DIR "/usr/include/g++"
        !             5: 
        !             6: #undef GCC_INCLUDE_DIR
        !             7: #define GCC_INCLUDE_DIR "/usr/include"
        !             8: 
        !             9: #undef INCLUDE_DEFAULTS
        !            10: #define INCLUDE_DEFAULTS               \
        !            11:   {                                    \
        !            12:     { GPLUSPLUS_INCLUDE_DIR, 1, 1 },   \
        !            13:     { GCC_INCLUDE_DIR, 0, 0 },         \
        !            14:     { 0, 0, 0 }                                \
        !            15:   }
        !            16: 
        !            17: 
        !            18: /* Under NetBSD, the normal location of the `ld' and `as' programs is the
        !            19:    /usr/bin directory.  */
        !            20: 
        !            21: #undef MD_EXEC_PREFIX
        !            22: #define MD_EXEC_PREFIX "/usr/bin/"
        !            23: 
        !            24: /* Under NetBSD, the normal location of the various *crt*.o files is the
        !            25:    /usr/lib directory.  */
        !            26: 
        !            27: #undef MD_STARTFILE_PREFIX
        !            28: #define MD_STARTFILE_PREFIX "/usr/lib/"
        !            29: 
        !            30: 
        !            31: /* Provide a CPP_SPEC appropriate for NetBSD.  Current we just deal with
        !            32:    the GCC option `-posix'.  */
        !            33: 
        !            34: #undef CPP_SPEC
        !            35: #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
        !            36: 
        !            37: /* Provide an ASM_SPEC appropriate for NetBSD.  Currently we only deal
        !            38:    with the options for generating PIC code.  */
        !            39: 
        !            40: #undef ASM_SPEC
        !            41: #define ASM_SPEC " %| %{fpic:-k} %{fPIC:-k -K}"
        !            42: 
        !            43: /* Provide a LIB_SPEC appropriate for NetBSD.  Just select the appropriate
        !            44:    libc, depending on whether we're doing profiling.  */
        !            45: 
        !            46: #undef LIB_SPEC
        !            47: #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
        !            48: 
        !            49: /* Provide a LINK_SPEC appropriate for NetBSD.  Here we provide support
        !            50:    for the special GCC options -static, -assert, and -nostdlib.  */
        !            51: 
        !            52: #undef LINK_SPEC
        !            53: #define LINK_SPEC \
        !            54:   "%{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{static:-Bstatic} %{assert*}"
        !            55: 
        !            56: 
        !            57: /* We have atexit(3).  */
        !            58: 
        !            59: #define HAVE_ATEXIT
        !            60: 
        !            61: /* Implicit library calls should use memcpy, not bcopy, etc.  */
        !            62: 
        !            63: #define TARGET_MEM_FUNCTIONS
        !            64: 
        !            65: /*
        !            66:  * Some imports from svr4.h in support of shared libraries.
        !            67:  * Currently, we need the DECLARE_OBJECT_SIZE stuff.
        !            68:  */
        !            69: 
        !            70: /* Define the strings used for the special svr4 .type and .size directives.
        !            71:    These strings generally do not vary from one system running svr4 to
        !            72:    another, but if a given system (e.g. m88k running svr) needs to use
        !            73:    different pseudo-op names for these, they may be overridden in the
        !            74:    file which includes this one.  */
        !            75: 
        !            76: #undef TYPE_ASM_OP
        !            77: #undef SIZE_ASM_OP
        !            78: #undef WEAK_ASM_OP
        !            79: #define TYPE_ASM_OP    ".type"
        !            80: #define SIZE_ASM_OP    ".size"
        !            81: #define WEAK_ASM_OP    ".weak"
        !            82: 
        !            83: /* The following macro defines the format used to output the second
        !            84:    operand of the .type assembler directive.  Different svr4 assemblers
        !            85:    expect various different forms for this operand.  The one given here
        !            86:    is just a default.  You may need to override it in your machine-
        !            87:    specific tm.h file (depending upon the particulars of your assembler).  */
        !            88: 
        !            89: #undef TYPE_OPERAND_FMT
        !            90: #define TYPE_OPERAND_FMT       "@%s"
        !            91: 
        !            92: /* Write the extra assembler code needed to declare a function's result.
        !            93:    Most svr4 assemblers don't require any special declaration of the
        !            94:    result value, but there are exceptions.  */
        !            95: 
        !            96: #ifndef ASM_DECLARE_RESULT
        !            97: #define ASM_DECLARE_RESULT(FILE, RESULT)
        !            98: #endif
        !            99: 
        !           100: /* These macros generate the special .type and .size directives which
        !           101:    are used to set the corresponding fields of the linker symbol table
        !           102:    entries in an ELF object file under SVR4.  These macros also output
        !           103:    the starting labels for the relevant functions/objects.  */
        !           104: 
        !           105: /* Write the extra assembler code needed to declare a function properly.
        !           106:    Some svr4 assemblers need to also have something extra said about the
        !           107:    function's return value.  We allow for that here.  */
        !           108: 
        !           109: #undef ASM_DECLARE_FUNCTION_NAME
        !           110: #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                    \
        !           111:   do {                                                                 \
        !           112:     fprintf (FILE, "\t%s\t ", TYPE_ASM_OP);                            \
        !           113:     assemble_name (FILE, NAME);                                                \
        !           114:     putc (',', FILE);                                                  \
        !           115:     fprintf (FILE, TYPE_OPERAND_FMT, "function");                      \
        !           116:     putc ('\n', FILE);                                                 \
        !           117:     ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));                     \
        !           118:     ASM_OUTPUT_LABEL(FILE, NAME);                                      \
        !           119:   } while (0)
        !           120: 
        !           121: /* Write the extra assembler code needed to declare an object properly.  */
        !           122: 
        !           123: #undef ASM_DECLARE_OBJECT_NAME
        !           124: #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                      \
        !           125:   do {                                                                 \
        !           126:     fprintf (FILE, "\t%s\t ", TYPE_ASM_OP);                            \
        !           127:     assemble_name (FILE, NAME);                                                \
        !           128:     putc (',', FILE);                                                  \
        !           129:     fprintf (FILE, TYPE_OPERAND_FMT, "object");                                \
        !           130:     putc ('\n', FILE);                                                 \
        !           131:     size_directive_output = 0;                                         \
        !           132:     if (!flag_inhibit_size_directive && DECL_SIZE (DECL))              \
        !           133:       {                                                                        \
        !           134:        size_directive_output = 1;                                      \
        !           135:        fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);                         \
        !           136:        assemble_name (FILE, NAME);                                     \
        !           137:        fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL))); \
        !           138:       }                                                                        \
        !           139:     ASM_OUTPUT_LABEL(FILE, NAME);                                      \
        !           140:   } while (0)
        !           141: 
        !           142: /* Output the size directive for a decl in rest_of_decl_compilation
        !           143:    in the case where we did not do so before the initializer.
        !           144:    Once we find the error_mark_node, we know that the value of
        !           145:    size_directive_output was set
        !           146:    by ASM_DECLARE_OBJECT_NAME when it was run for the same decl.  */
        !           147: 
        !           148: #undef ASM_FINISH_DECLARE_OBJECT
        !           149: #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)        \
        !           150: do {                                                                    \
        !           151:      char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);                  \
        !           152:      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)               \
        !           153:          && ! AT_END && TOP_LEVEL                                       \
        !           154:         && DECL_INITIAL (DECL) == error_mark_node                       \
        !           155:         && !size_directive_output)                                      \
        !           156:        {                                                                \
        !           157:         size_directive_output = 1;                                      \
        !           158:         fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);                         \
        !           159:         assemble_name (FILE, name);                                     \
        !           160:         fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL))); \
        !           161:        }                                                                \
        !           162:    } while (0)
        !           163: 
        !           164: /* This is how to declare the size of a function.  */
        !           165: 
        !           166: #undef ASM_DECLARE_FUNCTION_SIZE
        !           167: #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                   \
        !           168:   do {                                                                 \
        !           169:     if (!flag_inhibit_size_directive)                                  \
        !           170:       {                                                                        \
        !           171:         char label[256];                                               \
        !           172:        static int labelno;                                             \
        !           173:        labelno++;                                                      \
        !           174:        ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno);            \
        !           175:        ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno);               \
        !           176:        fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);                         \
        !           177:        assemble_name (FILE, (FNAME));                                  \
        !           178:         fprintf (FILE, ",");                                           \
        !           179:        assemble_name (FILE, label);                                    \
        !           180:         fprintf (FILE, "-");                                           \
        !           181:        assemble_name (FILE, (FNAME));                                  \
        !           182:        putc ('\n', FILE);                                              \
        !           183:       }                                                                        \
        !           184:   } while (0)

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