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Annotation of gcc/config/i386sco.h, revision 1.1.1.2

1.1       root        1: /* Definitions for Intel 386 running SCO Unix System V.  */
                      2: 
                      3: 
                      4: /* Mostly it's like AT&T Unix System V. */
                      5: 
                      6: #include "i386v.h"
                      7: 
                      8: /* Use crt1.o as a startup file and crtn.o as a closing file.  */
                      9: 
                     10: #undef STARTFILE_SPEC
1.1.1.2 ! root       11: #define STARTFILE_SPEC  "%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} crtbegin.o%s"
1.1       root       12: 
1.1.1.2 ! root       13: #define ENDFILE_SPEC "crtend.o%s crtn.o%s"
1.1       root       14: 
                     15: /* Library spec, including SCO international language support. */
                     16: 
                     17: #undef LIB_SPEC
                     18: #define LIB_SPEC \
                     19:  "%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp} %{scointl:libintl.a%s} -lc"
                     20: 
                     21: /* Specify predefined symbols in preprocessor.  */
                     22: 
                     23: #undef CPP_PREDEFINES
                     24: #define CPP_PREDEFINES "-Dunix -Di386 -DM_UNIX -DM_I386 -DM_COFF -DM_WORDSWAP"
                     25: 
1.1.1.2 ! root       26: #undef CPP_SPEC
1.1       root       27: #define CPP_SPEC "%{scointl:-DM_INTERNAT}"
                     28: 
1.1.1.2 ! root       29: /* Use atexit for static destructors, instead of defining
        !            30:    our own exit function.  */
        !            31: #define HAVE_ATEXIT
        !            32: 
1.1       root       33: #if 0 /* Not yet certain whether this is needed.  */
                     34: /* If no 387, use the general regs to return floating values,
                     35:    since this system does not emulate the 80387.  */
                     36: 
                     37: #define VALUE_REGNO(MODE) \
                     38:   ((TARGET_80387 && ((MODE) == SFmode || (MODE) == DFmode))
                     39:    ? FIRST_FLOAT_REG : 0)
                     40: 
                     41: #define HARD_REGNO_MODE_OK(REGNO, MODE) \
                     42:   ((REGNO) < 2 ? 1                                                     \
                     43:    : (REGNO) < 4 ? 1                                                   \
                     44:    : (REGNO) >= 8 ? ((GET_MODE_CLASS (MODE) == MODE_FLOAT              \
                     45:                      || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)   \
                     46:                     && TARGET_80387                                    \
                     47:                     && GET_MODE_UNIT_SIZE (MODE) <= 8)                 \
                     48:    : (MODE) != QImode)
                     49: #endif
1.1.1.2 ! root       50: 
        !            51: /* caller has to pop the extra argument passed to functions that return
        !            52:    structures. */
        !            53: 
        !            54: #undef RETURN_POPS_ARGS
        !            55: #define RETURN_POPS_ARGS(FUNTYPE,SIZE)   \
        !            56:   (TREE_CODE (FUNTYPE) == IDENTIFIER_NODE ? 0                  \
        !            57:    : (TARGET_RTD                                               \
        !            58:       && (TYPE_ARG_TYPES (FUNTYPE) == 0                                \
        !            59:          || (TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE))) \
        !            60:              == void_type_node))) ? (SIZE)                     \
        !            61:    : 0)
        !            62: /* On other 386 systems, the last line looks like this:
        !            63:    : (aggregate_value_p (FUNTYPE)) ? GET_MODE_SIZE (Pmode) : 0)  */

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