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1.1 root 1: /* Definitions for Intel 386 running SCO Unix System V,
2: using dbx-in-coff encapsulation.
3: Copyright (C) 1992 Free Software Foundation, Inc.
4:
5: This file is part of GNU CC.
6:
7: GNU CC is free software; you can redistribute it and/or modify
8: it under the terms of the GNU General Public License as published by
9: the Free Software Foundation; either version 2, or (at your option)
10: any later version.
11:
12: GNU CC is distributed in the hope that it will be useful,
13: but WITHOUT ANY WARRANTY; without even the implied warranty of
14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: GNU General Public License for more details.
16:
17: You should have received a copy of the GNU General Public License
18: along with GNU CC; see the file COPYING. If not, write to
19: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
20:
21: #include "i386/svr3dbx.h"
22:
23: /* Overridden defines for SCO systems from sco.h. */
24:
25: /* By default, target has a 80387, uses IEEE compatible arithmetic,
26: and returns float values in the 387, ie,
27: (TARGET_80387 | TARGET_FLOAT_RETURNS_IN_80387)
28:
29: SCO's software emulation of a 387 fails to handle the `fucomp'
30: opcode. fucomp is only used when generating IEEE compliant code.
31: So don't make TARGET_IEEE_FP default for SCO. */
32:
33: #undef TARGET_DEFAULT
34: #define TARGET_DEFAULT 0201
35:
36: /* Use crt1.o as a startup file and crtn.o as a closing file. */
37:
38: #undef STARTFILE_SPEC
39: #define STARTFILE_SPEC \
40: "%{!r:%{!z:svr3.ifile%s}%{z:svr3z.ifile%s}}\
41: %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}"
42:
43: /* Library spec, including SCO international language support. */
44:
45: #undef LIB_SPEC
46: #define LIB_SPEC \
47: "%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp} %{scointl:libintl.a%s} -lc"
48:
49: /* Specify predefined symbols in preprocessor. */
50:
51: #undef CPP_PREDEFINES
52: #define CPP_PREDEFINES "-Dunix -Di386 -DM_UNIX -DM_I386 -DM_COFF -DM_WORDSWAP -Asystem(unix) -Asystem(svr3) -Acpu(i386) -Amachine(i386)"
53:
54: #undef CPP_SPEC
55: #define CPP_SPEC "%{scointl:-DM_INTERNAT}"
56:
57: /* This spec is used for telling cpp whether char is signed or not. */
58:
59: #undef SIGNED_CHAR_SPEC
60: #if DEFAULT_SIGNED_CHAR
61: #define SIGNED_CHAR_SPEC \
62: "%{funsigned-char:-D__CHAR_UNSIGNED__ -D_CHAR_UNSIGNED}"
63: #else
64: #define SIGNED_CHAR_SPEC \
65: "%{!fsigned-char:-D__CHAR_UNSIGNED__ -D_CHAR_UNSIGNED}"
66: #endif
67:
68: /* Use atexit for static destructors, instead of defining
69: our own exit function. */
70: #define HAVE_ATEXIT
71:
72: /* caller has to pop the extra argument passed to functions that return
73: structures. */
74:
75: #undef RETURN_POPS_ARGS
76: #define RETURN_POPS_ARGS(FUNTYPE,SIZE) \
77: (TREE_CODE (FUNTYPE) == IDENTIFIER_NODE ? 0 \
78: : (TARGET_RTD \
79: && (TYPE_ARG_TYPES (FUNTYPE) == 0 \
80: || (TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE))) \
81: == void_type_node))) ? (SIZE) \
82: : 0)
83: /* On other 386 systems, the last line looks like this:
84: : (aggregate_value_p (TREE_TYPE (FUNTYPE))) ? GET_MODE_SIZE (Pmode) : 0) */
85:
86: /* Use periods rather than dollar signs in special g++ assembler names. */
87:
88: #define NO_DOLLAR_IN_LABEL
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