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1.1 root 1: /* Definitions of target machine for GNU compiler.
2: Copyright (C) 1990 Free Software Foundation, Inc.
3:
4: Written by Robert Andersson, International Systems, Oslo, Norway.
5: Please send bug reports, questions and improvements to [email protected].
6:
7: For NCR Tower 32/4x0 and 32/6x0 running System V Release 3.
8: I don't have access to 200/700/800/850 machines, so I don't know if it
9: works on those as well. It shouldn't be far from it however.
10: The hardware floating point support is completely untested, as I do
11: not have access to a machine with a 6888x FPU in it.
12: It does not work on the System V Release 2 based OS releases. Making it
13: work will not be easy, due to the silly way in which stack expansion is
14: implemented in the OS.
15:
16: This file is included in tower-as.h.
17: Do *NOT* include this file directly.
18:
19:
20: This file is part of GNU CC.
21:
22: GNU CC is free software; you can redistribute it and/or modify
23: it under the terms of the GNU General Public License as published by
24: the Free Software Foundation; either version 2, or (at your option)
25: any later version.
26:
27: GNU CC is distributed in the hope that it will be useful,
28: but WITHOUT ANY WARRANTY; without even the implied warranty of
29: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30: GNU General Public License for more details.
31:
32: You should have received a copy of the GNU General Public License
33: along with GNU CC; see the file COPYING. If not, write to
34: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
35:
36:
37: #include "m68k/m68k.h"
38:
39:
40: /* See m68k.h. 5 means 68020 with no 68881. */
41:
42: #define TARGET_DEFAULT 5
43:
44: /* Don't try using XFmode. */
45: #undef LONG_DOUBLE_TYPE_SIZE
46: #define LONG_DOUBLE_TYPE_SIZE 64
47:
48: /* Names to predefine in the preprocessor for this target machine. */
49:
50: #define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_200 -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
51:
52: #if 0 /* It is incorrect to test these symbols.
53: They describe the host, not the target.
54: It should not matter which model is specified. */
55: #ifdef tower32_600
56: #define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_600 -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
57: #endif
58: #ifdef tower32_700
59: #define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_700 -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
60: #endif
61: #ifdef tower32_800
62: #define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_800 -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
63: #endif
64: #ifdef tower32_850
65: #define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_850 -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
66: #endif
67: #endif
68:
69: /* The startfiles and libraries depend on the -p and -m68881 options.
70: The Tower does not support the -pg option. */
71:
72: #define LINK_SPEC \
73: "%{p:%{m68881:-L/usr/lib/fp/libp} -L/usr/lib/libp} \
74: %{m68881:-L/usr/lib/fp}"
75:
76: #define LIB_SPEC \
77: "%{shlib:-lc_s} -lc crtend.o%s crtn.o%s"
78:
79: #define STARTFILE_SPEC \
80: "%{p:mcrt1.o%s} %{!p:crt1.o%s} crtbegin.o%s"
81:
82: /* Use mem* functions, recognize #ident lines. */
83:
84: #define TARGET_MEM_FUNCTIONS
85: #define IDENT_DIRECTIVE
86:
87: /* Every structure and union's size must be a multiple of two bytes. */
88:
89: #define STRUCTURE_SIZE_BOUNDARY 16
90:
91: /* All register names should have a leading % character. */
92:
93: #undef REGISTER_NAMES
94: #define REGISTER_NAMES \
95: {"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7", \
96: "%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%sp", \
97: "%fp0", "%fp1", "%fp2", "%fp3", "%fp4", "%fp5", "%fp6", "%fp7"};
98:
99: /* We do not want leading underscores. */
100:
101: #undef ASM_OUTPUT_LABELREF
102: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
103: fprintf (FILE, "%s", NAME)
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