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1.1 root 1: /* Definitions of target machine for GNU compiler. Sun 68000/68020 version.
2: Copyright (C) 1987, 1988 Free Software Foundation, Inc.
3:
4: This file is part of GNU CC.
5:
6: GNU CC is free software; you can redistribute it and/or modify
7: it under the terms of the GNU General Public License as published by
8: the Free Software Foundation; either version 1, or (at your option)
9: any later version.
10:
11: GNU CC is distributed in the hope that it will be useful,
12: but WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: GNU General Public License for more details.
15:
16: You should have received a copy of the GNU General Public License
17: along with GNU CC; see the file COPYING. If not, write to
18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
19:
20: /* This comment is here to see if it will keep Sun's cpp from dying. */
21:
22: #include "tm-m68k.h"
23:
24: /* See tm-m68k.h. 7 means 68020 with 68881. */
25:
26: #ifndef TARGET_DEFAULT
27: #define TARGET_DEFAULT 7
28: #endif
29:
30: /* Define __HAVE_FPA__ or __HAVE_68881__ in preprocessor,
31: according to the -m flags.
32: This will control the use of inline 68881 insns in certain macros.
33: Also inform the program which CPU this is for. */
34:
35: #if TARGET_DEFAULT & 02
36:
37: /* -m68881 is the default */
38: #define CPP_SPEC \
39: "%{!msoft-float:%{mfpa:-D__HAVE_FPA__ }%{!mfpa:-D__HAVE_68881__ }}\
40: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
41:
42: #else
43: #if TARGET_DEFAULT & 0100
44:
45: /* -mfpa is the default */
46: #define CPP_SPEC \
47: "%{!msoft-float:%{m68881:-D__HAVE_68881__ }%{!m68881:-D__HAVE_FPA__ }}\
48: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
49:
50: #else
51:
52: /* -msoft-float is the default */
53: #define CPP_SPEC \
54: "%{m68881:-D__HAVE_68881__ }%{mfpa:-D__HAVE_FPA__ }\
55: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
56:
57: #endif
58: #endif
59:
60: /* Prevent error on `-sun3' option. */
61:
62: #define CC1_SPEC "%{sun3:}"
63:
64: /* -m68000 requires special flags to the assembler. */
65:
66: #define ASM_SPEC \
67: "%{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}}"
68:
69: /* Names to predefine in the preprocessor for this target machine. */
70:
71: #define CPP_PREDEFINES "-Dmc68000 -Dsun -Dunix"
72:
73: /* STARTFILE_SPEC to include sun floating point initialization
74: This is necessary (tr: Sun does it) for both the m68881 and the fpa
75: routines.
76: Note that includes knowledge of the default specs for gcc, ie. no
77: args translates to the same effect as -m68881
78: I'm not sure what would happen below if people gave contradictory
79: arguments (eg. -msoft-float -mfpa) */
80:
81: #if TARGET_DEFAULT & 0100
82: /* -mfpa is the default */
83: #define STARTFILE_SPEC \
84: "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} \
85: %{m68881:Mcrt1.o%s} \
86: %{msoft-float:Fcrt1.o%s} \
87: %{!m68881:%{!msoft-float:Wcrt1.o%s}}"
88: #else
89: #if TARGET_DEFAULT & 2
90: /* -m68881 is the default */
91: #define STARTFILE_SPEC \
92: "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} \
93: %{mfpa:Wcrt1.o%s} \
94: %{msoft-float:Fcrt1.o%s} \
95: %{!mfpa:%{!msoft-float:Mcrt1.o%s}}"
96: #else
97: /* -msoft-float is the default */
98: #define STARTFILE_SPEC \
99: "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} \
100: %{m68881:Mcrt1.o%s} \
101: %{mfpa:Wcrt1.o%s} \
102: %{!m68881:%{!mfpa:Fcrt1.o%s}}"
103: #endif
104: #endif
105:
106: /* Specify library to handle `-a' basic block profiling. */
107:
108: #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
109: %{a:/usr/lib/bb_link.o} "
110:
111: /* Provide required defaults for linker -e and -d switches.
112: Also, it is hard to debug with shared libraries,
113: so don't use them if going to debug. */
114:
115: #define LINK_SPEC "%{!e*:-e start} -dc -dp %{g:-Bstatic} %{static:-Bstatic} %{-Bstatic}"
116:
117: /* Every structure or union's size must be a multiple of 2 bytes. */
118:
119: #define STRUCTURE_SIZE_BOUNDARY 16
120:
121: /* This is BSD, so it wants DBX format. */
122:
123: #define DBX_DEBUGGING_INFO
124:
125: /* This is how to output an assembler line defining a `double' constant. */
126:
127: #undef ASM_OUTPUT_DOUBLE
128: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
129: (isinf ((VALUE)) \
130: ? fprintf (FILE, "\t.double 0r%s99e999\n", ((VALUE) > 0 ? "" : "-")) \
131: : fprintf (FILE, "\t.double 0r%.20e\n", (VALUE)))
132:
133: /* This is how to output an assembler line defining a `float' constant. */
134:
135: #undef ASM_OUTPUT_FLOAT
136: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
137: (isinf ((VALUE)) \
138: ? fprintf (FILE, "\t.single 0r%s99e999\n", ((VALUE) > 0 ? "" : "-")) \
139: : fprintf (FILE, "\t.single 0r%.20e\n", (VALUE)))
140:
141: #undef ASM_OUTPUT_FLOAT_OPERAND
142: #define ASM_OUTPUT_FLOAT_OPERAND(FILE,VALUE) \
143: (isinf ((VALUE)) \
144: ? fprintf (FILE, "#0r%s99e999", ((VALUE) > 0 ? "" : "-")) \
145: : fprintf (FILE, "#0r%.9g", (VALUE)))
146:
147: #undef ASM_OUTPUT_DOUBLE_OPERAND
148: #define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \
149: (isinf ((VALUE)) \
150: ? fprintf (FILE, "#0r%s99e999", ((VALUE) > 0 ? "" : "-")) \
151: : fprintf (FILE, "#0r%.20g", (VALUE)))
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