64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* Definitions for Intel 386 running SCO Unix System V. */
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/* Mostly it's like AT&T Unix System V. */
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#include "i386v.h"
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/* Use crt1.o as a startup file and crtn.o as a closing file. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} crtbegin.o%s"
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#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
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/* Library spec, including SCO international language support. */
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#undef LIB_SPEC
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#define LIB_SPEC \
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"%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp} %{scointl:libintl.a%s} -lc"
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/* Specify predefined symbols in preprocessor. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-Dunix -Di386 -DM_UNIX -DM_I386 -DM_COFF -DM_WORDSWAP"
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#undef CPP_SPEC
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#define CPP_SPEC "%{scointl:-DM_INTERNAT}"
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/* Use atexit for static destructors, instead of defining
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our own exit function. */
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#define HAVE_ATEXIT
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#if 0 /* Not yet certain whether this is needed. */
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/* If no 387, use the general regs to return floating values,
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since this system does not emulate the 80387. */
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#define VALUE_REGNO(MODE) \
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((TARGET_80387 && ((MODE) == SFmode || (MODE) == DFmode))
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? FIRST_FLOAT_REG : 0)
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#define HARD_REGNO_MODE_OK(REGNO, MODE) \
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((REGNO) < 2 ? 1 \
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: (REGNO) < 4 ? 1 \
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: (REGNO) >= 8 ? ((GET_MODE_CLASS (MODE) == MODE_FLOAT \
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|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
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&& TARGET_80387 \
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&& GET_MODE_UNIT_SIZE (MODE) <= 8) \
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: (MODE) != QImode)
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#endif
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/* caller has to pop the extra argument passed to functions that return
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structures. */
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#undef RETURN_POPS_ARGS
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#define RETURN_POPS_ARGS(FUNTYPE,SIZE) \
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(TREE_CODE (FUNTYPE) == IDENTIFIER_NODE ? 0 \
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: (TARGET_RTD \
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&& (TYPE_ARG_TYPES (FUNTYPE) == 0 \
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|| (TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE))) \
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== void_type_node))) ? (SIZE) \
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: 0)
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/* On other 386 systems, the last line looks like this:
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: (aggregate_value_p (FUNTYPE)) ? GET_MODE_SIZE (Pmode) : 0) */
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