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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 2, 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: /* If you do not need to generate floating point code for the optional
23: Sun FPA board, you can safely comment out the SUPPORT_SUN_FPA define
24: to gain a little speed and code size. */
25:
26: #define SUPPORT_SUN_FPA
27:
28: #include "m68k.h"
29:
30: /* See m68k.h. 7 means 68020 with 68881. */
31:
32: #ifndef TARGET_DEFAULT
33: #define TARGET_DEFAULT 7
34: #endif
35:
36: /* Define __HAVE_FPA__ or __HAVE_68881__ in preprocessor,
37: according to the -m flags.
38: This will control the use of inline 68881 insns in certain macros.
39: Also inform the program which CPU this is for. */
40:
41: #if TARGET_DEFAULT & 02
42:
43: /* -m68881 is the default */
44: #define CPP_SPEC \
45: "%{!msoft-float:%{mfpa:-D__HAVE_FPA__ }%{!mfpa:-D__HAVE_68881__ }}\
46: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
47:
48: #else
49: #if TARGET_DEFAULT & 0100
50:
51: /* -mfpa is the default */
52: #define CPP_SPEC \
53: "%{!msoft-float:%{m68881:-D__HAVE_68881__ }%{!m68881:-D__HAVE_FPA__ }}\
54: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
55:
56: #else
57:
58: /* -msoft-float is the default */
59: #define CPP_SPEC \
60: "%{m68881:-D__HAVE_68881__ }%{mfpa:-D__HAVE_FPA__ }\
61: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
62:
63: #endif
64: #endif
65:
66: /* Prevent error on `-sun3' and `-target sun3' options. */
67:
68: #define CC1_SPEC "%{sun3:} %{target:}"
69:
70: #define PTRDIFF_TYPE "int"
71: #define SIZE_TYPE "int"
72:
73: /* We must override m68k.h. */
74: #undef WCHAR_TYPE
75: #undef WCHAR_TYPE_SIZE
76: #define WCHAR_TYPE "short unsigned int"
77: #define WCHAR_TYPE_SIZE 16
78:
79: /* These compiler options take an argument. We ignore -target for now. */
80:
81: #define WORD_SWITCH_TAKES_ARG(STR) \
82: (!strcmp (STR, "Tdata") || !strcmp (STR, "include") \
83: || !strcmp (STR, "imacros") || !strcmp (STR, "target") \
84: || !strcmp (STR, "assert"))
85:
86: /* -m68000 requires special flags to the assembler. */
87:
88: #define ASM_SPEC \
89: "%{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}} \
90: %{fpic:-k} %{fPIC:-k}"
91:
92: /* Names to predefine in the preprocessor for this target machine. */
93:
94: #define CPP_PREDEFINES "-Dmc68000 -Dsun -Dunix"
95:
96: /* STARTFILE_SPEC to include sun floating point initialization
97: This is necessary (tr: Sun does it) for both the m68881 and the fpa
98: routines.
99: Note that includes knowledge of the default specs for gcc, ie. no
100: args translates to the same effect as -m68881
101: I'm not sure what would happen below if people gave contradictory
102: arguments (eg. -msoft-float -mfpa) */
103:
104: #if TARGET_DEFAULT & 0100
105: /* -mfpa is the default */
106: #define STARTFILE_SPEC \
107: "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} \
108: %{m68881:Mcrt1.o%s} \
109: %{msoft-float:Fcrt1.o%s} \
110: %{!m68881:%{!msoft-float:Wcrt1.o%s}}"
111: #else
112: #if TARGET_DEFAULT & 2
113: /* -m68881 is the default */
114: #define STARTFILE_SPEC \
115: "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} \
116: %{mfpa:Wcrt1.o%s} \
117: %{msoft-float:Fcrt1.o%s} \
118: %{!mfpa:%{!msoft-float:Mcrt1.o%s}}"
119: #else
120: /* -msoft-float is the default */
121: #define STARTFILE_SPEC \
122: "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} \
123: %{m68881:Mcrt1.o%s} \
124: %{mfpa:Wcrt1.o%s} \
125: %{!m68881:%{!mfpa:Fcrt1.o%s}}"
126: #endif
127: #endif
128:
129: /* Specify library to handle `-a' basic block profiling.
130: Control choice of libm.a (if user says -lm)
131: based on fp arith default and options. */
132:
133: #if TARGET_DEFAULT & 0100
134: /* -mfpa is the default */
135: #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
136: %{a:/usr/lib/bb_link.o} %{g:-lg} \
137: %{msoft-float:-L/usr/lib/fsoft}%{m68881:-L/usr/lib/f68881}\
138: %{!msoft_float:%{!m68881:-L/usr/lib/ffpa}}"
139: #else
140: #if TARGET_DEFAULT & 2
141: /* -m68881 is the default */
142: #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
143: %{a:/usr/lib/bb_link.o} %{g:-lg} \
144: %{msoft-float:-L/usr/lib/fsoft}%{!msoft-float:%{!mfpa:-L/usr/lib/f68881}}\
145: %{mfpa:-L/usr/lib/ffpa}"
146: #else
147: /* -msoft-float is the default */
148: #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
149: %{a:/usr/lib/bb_link.o} %{g:-lg} \
150: %{!m68881:%{!mfpa:-L/usr/lib/fsoft}}%{m68881:-L/usr/lib/f68881}\
151: %{mfpa:-L/usr/lib/ffpa}"
152: #endif
153: #endif
154:
155: /* Provide required defaults for linker -e and -d switches.
156: Also, it is hard to debug with shared libraries,
157: so don't use them if going to debug. */
158:
159: #define LINK_SPEC "%{!e*:-e start} -dc -dp %{g:-Bstatic} %{static:-Bstatic} \
160: %{assert*}"
161:
162: /* Every structure or union's size must be a multiple of 2 bytes. */
163:
164: #define STRUCTURE_SIZE_BOUNDARY 16
165:
166: /* This is BSD, so it wants DBX format. */
167:
168: #define DBX_DEBUGGING_INFO
169:
170: /* Allow folding division by zero. */
171: #define REAL_INFINITY
172:
173: /* This is how to output an assembler line defining a `double' constant. */
174:
175: #undef ASM_OUTPUT_DOUBLE
176: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
177: { \
178: if (REAL_VALUE_ISINF (VALUE)) \
179: fprintf (FILE, "\t.double 0r%s99e999\n", (VALUE) > 0 ? "" : "-"); \
180: else if (isnan (VALUE)) \
181: { \
182: union { double d; long l[2];} t; \
183: t.d = (VALUE); \
184: fprintf (FILE, "\t.long 0x%lx\n\t.long 0x%lx\n", t.l[0], t.l[1]); \
185: } \
186: else \
187: fprintf (FILE, "\t.double 0r%.17g\n", VALUE); \
188: }
189:
190: /* This is how to output an assembler line defining a `float' constant. */
191:
192: #undef ASM_OUTPUT_FLOAT
193: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
194: { \
195: if (REAL_VALUE_ISINF (VALUE)) \
196: fprintf (FILE, "\t.single 0r%s99e999\n", (VALUE) > 0 ? "" : "-"); \
197: else if (isnan (VALUE)) \
198: { \
199: union { float f; long l;} t; \
200: t.f = (VALUE); \
201: fprintf (FILE, "\t.long 0x%lx\n", t.l); \
202: } \
203: else \
204: fprintf (FILE, "\t.single 0r%.9g\n", VALUE); \
205: }
206:
207: /* This is how to output an assembler lines defining floating operands.
208: There's no way to output a NaN's fraction, so we lose it. */
209:
210: #undef ASM_OUTPUT_FLOAT_OPERAND
211: #define ASM_OUTPUT_FLOAT_OPERAND(FILE,VALUE) \
212: (REAL_VALUE_ISINF ((VALUE)) \
213: ? (asm_fprintf (FILE, "%I0r%s99e999", ((VALUE) > 0 ? "" : "-")), 0) \
214: : (VALUE) == -0.0 \
215: ? (asm_fprintf (FILE, "%I0r-0.0"), 0) \
216: : (asm_fprintf (FILE, "%I0r%.9g", (VALUE)), 0))
217:
218: #undef ASM_OUTPUT_DOUBLE_OPERAND
219: #define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \
220: (REAL_VALUE_ISINF ((VALUE)) \
221: ? (asm_fprintf (FILE, "%I0r%s99e999", ((VALUE) > 0 ? "" : "-")), 0) \
222: : (VALUE) == -0.0 \
223: ? (asm_fprintf (FILE, "%I0r-0.0"), 0) \
224: : (asm_fprintf (FILE, "%I0r%.17g", (VALUE)), 0))
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