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Diffstat (limited to 'gcc/config/i386/sco.h')
| -rwxr-xr-x | gcc/config/i386/sco.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/gcc/config/i386/sco.h b/gcc/config/i386/sco.h new file mode 100755 index 0000000..55af641 --- /dev/null +++ b/gcc/config/i386/sco.h @@ -0,0 +1,117 @@ +/* Definitions for Intel 386 running SCO Unix System V. + Copyright (C) 1988, 92, 94, 95, 96, 1999 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +/* 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 (MASK_80387 | MASK_FLOAT_RETURNS) + +/* 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 -DM_UNIX -DM_I386 -DM_COFF -DM_WORDSWAP -Asystem(svr3)" + +#undef CPP_SPEC +#define CPP_SPEC "%(cpp_cpu) %{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(FUNDECL,FUNTYPE,SIZE) \ + ((FUNDECL) && TREE_CODE (FUNDECL) == 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) */ + +/* Handle #pragma pack. */ +#define HANDLE_SYSV_PRAGMA |