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- /* Definitions for Intel 386 running SCO Unix System V. */
-
-
- /* Mostly it's like AT&T Unix System V. */
-
- #include "i386/sysv3.h"
-
- /* By default, target has a 80387, uses IEEE compatible arithmetic,
- and returns float values in the 387, ie,
- (TARGET_80387 | TARGET_FLOAT_RETURNS_IN_80387)
-
- SCO's software emulation of a 387 fails to handle the `fucomp'
- opcode. fucomp is only used when generating IEEE compliant code.
- So don't make TARGET_IEEE_FP default for SCO. */
-
- #undef TARGET_DEFAULT
- #define TARGET_DEFAULT 0201
-
- /* Let's guess that the SCO software FPU emulator can't handle
- 80-bit XFmode insns, so don't generate them. */
- #undef LONG_DOUBLE_TYPE_SIZE
- #define LONG_DOUBLE_TYPE_SIZE 64
-
- /* Use crt1.o as a startup file and crtn.o as a closing file. */
-
- #undef STARTFILE_SPEC
- #define STARTFILE_SPEC \
- "%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} crtbegin.o%s"
-
- #define ENDFILE_SPEC "crtend.o%s crtn.o%s"
-
- /* Library spec, including SCO international language support. */
-
- #undef LIB_SPEC
- #define LIB_SPEC \
- "%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp} %{scointl:libintl.a%s} -lc"
-
- /* Specify predefined symbols in preprocessor. */
-
- #undef CPP_PREDEFINES
- #define CPP_PREDEFINES "-Dunix -Di386 -DM_UNIX -DM_I386 -DM_COFF -DM_WORDSWAP -Asystem(unix) -Asystem(svr3) -Acpu(i386) -Amachine(i386)"
-
- #undef CPP_SPEC
- #define CPP_SPEC "%{scointl:-DM_INTERNAT}"
-
- /* This spec is used for telling cpp whether char is signed or not. */
-
- #undef SIGNED_CHAR_SPEC
- #if DEFAULT_SIGNED_CHAR
- #define SIGNED_CHAR_SPEC \
- "%{funsigned-char:-D__CHAR_UNSIGNED__ -D_CHAR_UNSIGNED}"
- #else
- #define SIGNED_CHAR_SPEC \
- "%{!fsigned-char:-D__CHAR_UNSIGNED__ -D_CHAR_UNSIGNED}"
- #endif
-
- /* Use atexit for static destructors, instead of defining
- our own exit function. */
- #define HAVE_ATEXIT
-
- /* Specify the size_t type. */
- #define SIZE_TYPE "unsigned int"
-
- #if 0 /* Not yet certain whether this is needed. */
- /* If no 387, use the general regs to return floating values,
- since this system does not emulate the 80387. */
-
- #undef VALUE_REGNO
- #define VALUE_REGNO(MODE) \
- ((TARGET_80387
- && ((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode)
- ? FIRST_FLOAT_REG : 0)
-
- #undef HARD_REGNO_MODE_OK
- #define HARD_REGNO_MODE_OK(REGNO, MODE) \
- ((REGNO) < 2 ? 1 \
- : (REGNO) < 4 ? 1 \
- : FP_REGNO_P (REGNO) ? ((GET_MODE_CLASS (MODE) == MODE_FLOAT \
- || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
- && TARGET_80387 \
- && GET_MODE_UNIT_SIZE (MODE) <= 8) \
- : (MODE) != QImode)
- #endif
-
- /* caller has to pop the extra argument passed to functions that return
- structures. */
-
- #undef RETURN_POPS_ARGS
- #define RETURN_POPS_ARGS(FUNTYPE,SIZE) \
- (TREE_CODE (FUNTYPE) == IDENTIFIER_NODE ? 0 \
- : (TARGET_RTD \
- && (TYPE_ARG_TYPES (FUNTYPE) == 0 \
- || (TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE))) \
- == void_type_node))) ? (SIZE) \
- : 0)
- /* On other 386 systems, the last line looks like this:
- : (aggregate_value_p (TREE_TYPE (FUNTYPE))) ? GET_MODE_SIZE (Pmode) : 0) */
-