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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__ }}\
1.1.1.2 root 46: %{m68000:-D__mc68010__}%{mc68000:-D__mc68010__}%{!mc68000:%{!m68000:-D__mc68020__}} \
1.1 root 47: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
48:
49: #else
50:
51: /* -msoft-float is the default */
52: #define CPP_SPEC \
53: "%{m68881:-D__HAVE_68881__ }%{mfpa:-D__HAVE_FPA__ }\
1.1.1.2 root 54: %{m68000:-D__mc68010__}%{mc68000:-D__mc68010__}%{!mc68000:%{!m68000:-D__mc68020__}} \
1.1 root 55: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
56:
57: #endif
58:
59: /* Prevent error on `-sun3' and `-target sun3' options. */
60:
61: #define CC1_SPEC "%{sun3:} %{target:}"
62:
63: #define PTRDIFF_TYPE "int"
64: #define SIZE_TYPE "int"
65:
66: /* We must override m68k.h. */
67: #undef WCHAR_TYPE
68: #undef WCHAR_TYPE_SIZE
69: #define WCHAR_TYPE "short unsigned int"
70: #define WCHAR_TYPE_SIZE 16
71:
72: /* These compiler options take an argument. We ignore -target for now. */
73:
74: #define WORD_SWITCH_TAKES_ARG(STR) \
75: (!strcmp (STR, "Tdata") || !strcmp (STR, "include") \
76: || !strcmp (STR, "imacros") || !strcmp (STR, "target") \
1.1.1.2 root 77: || !strcmp (STR, "assert") || !strcmp (STR, "aux-info"))
1.1 root 78:
79: /* -m68000 requires special flags to the assembler. */
80:
81: #define ASM_SPEC \
82: "%{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}} \
83: %{fpic:-k} %{fPIC:-k}"
84:
85: /* Names to predefine in the preprocessor for this target machine. */
86:
87: #define CPP_PREDEFINES "-Dmc68000 -Dsun -Dunix"
88:
89: /* STARTFILE_SPEC to include sun floating point initialization
90: This is necessary (tr: Sun does it) for both the m68881 and the fpa
91: routines.
92: Note that includes knowledge of the default specs for gcc, ie. no
93: args translates to the same effect as -m68881
94: I'm not sure what would happen below if people gave contradictory
95: arguments (eg. -msoft-float -mfpa) */
96:
97: #if TARGET_DEFAULT & 0100
98: /* -mfpa is the default */
99: #define STARTFILE_SPEC \
100: "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} \
101: %{m68881:Mcrt1.o%s} \
102: %{msoft-float:Fcrt1.o%s} \
103: %{!m68881:%{!msoft-float:Wcrt1.o%s}}"
104: #else
105: #if TARGET_DEFAULT & 2
106: /* -m68881 is the default */
107: #define STARTFILE_SPEC \
108: "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} \
109: %{mfpa:Wcrt1.o%s} \
110: %{msoft-float:Fcrt1.o%s} \
111: %{!mfpa:%{!msoft-float:Mcrt1.o%s}}"
112: #else
113: /* -msoft-float is the default */
114: #define STARTFILE_SPEC \
115: "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} \
116: %{m68881:Mcrt1.o%s} \
117: %{mfpa:Wcrt1.o%s} \
118: %{!m68881:%{!mfpa:Fcrt1.o%s}}"
119: #endif
120: #endif
121:
122: /* Specify library to handle `-a' basic block profiling.
123: Control choice of libm.a (if user says -lm)
124: based on fp arith default and options. */
125:
126: #if TARGET_DEFAULT & 0100
127: /* -mfpa is the default */
128: #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
129: %{a:/usr/lib/bb_link.o} %{g:-lg} \
130: %{msoft-float:-L/usr/lib/fsoft}%{m68881:-L/usr/lib/f68881}\
131: %{!msoft_float:%{!m68881:-L/usr/lib/ffpa}}"
132: #else
133: #if TARGET_DEFAULT & 2
134: /* -m68881 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}%{!msoft-float:%{!mfpa:-L/usr/lib/f68881}}\
138: %{mfpa:-L/usr/lib/ffpa}"
139: #else
140: /* -msoft-float is the default */
141: #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
142: %{a:/usr/lib/bb_link.o} %{g:-lg} \
143: %{!m68881:%{!mfpa:-L/usr/lib/fsoft}}%{m68881:-L/usr/lib/f68881}\
144: %{mfpa:-L/usr/lib/ffpa}"
145: #endif
146: #endif
147:
1.1.1.2 root 148: /* Provide required defaults for linker -e and -d switches. */
1.1 root 149:
1.1.1.3 ! root 150: #define LINK_SPEC \
! 151: "%{!nostdlib:%{!e*:-e start}} -dc -dp %{static:-Bstatic} %{assert*}"
1.1 root 152:
153: /* Every structure or union's size must be a multiple of 2 bytes. */
154:
155: #define STRUCTURE_SIZE_BOUNDARY 16
156:
157: /* This is BSD, so it wants DBX format. */
158:
159: #define DBX_DEBUGGING_INFO
160:
161: /* Allow folding division by zero. */
162: #define REAL_INFINITY
163:
1.1.1.2 root 164: /* Generate calls to memcpy, memcmp and memset. */
165: #define TARGET_MEM_FUNCTIONS
166:
1.1 root 167: /* This is how to output an assembler line defining a `double' constant. */
168:
169: #undef ASM_OUTPUT_DOUBLE
170: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
171: { \
172: if (REAL_VALUE_ISINF (VALUE)) \
173: fprintf (FILE, "\t.double 0r%s99e999\n", (VALUE) > 0 ? "" : "-"); \
1.1.1.2 root 174: else if (REAL_VALUE_ISNAN (VALUE)) \
1.1 root 175: { \
176: union { double d; long l[2];} t; \
177: t.d = (VALUE); \
178: fprintf (FILE, "\t.long 0x%lx\n\t.long 0x%lx\n", t.l[0], t.l[1]); \
179: } \
180: else \
181: fprintf (FILE, "\t.double 0r%.17g\n", VALUE); \
182: }
183:
184: /* This is how to output an assembler line defining a `float' constant. */
185:
186: #undef ASM_OUTPUT_FLOAT
187: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
188: { \
189: if (REAL_VALUE_ISINF (VALUE)) \
190: fprintf (FILE, "\t.single 0r%s99e999\n", (VALUE) > 0 ? "" : "-"); \
1.1.1.2 root 191: else if (REAL_VALUE_ISNAN (VALUE)) \
1.1 root 192: { \
193: union { float f; long l;} t; \
194: t.f = (VALUE); \
195: fprintf (FILE, "\t.long 0x%lx\n", t.l); \
196: } \
197: else \
198: fprintf (FILE, "\t.single 0r%.9g\n", VALUE); \
199: }
200:
201: /* This is how to output an assembler lines defining floating operands.
202: There's no way to output a NaN's fraction, so we lose it. */
203:
204: #undef ASM_OUTPUT_FLOAT_OPERAND
205: #define ASM_OUTPUT_FLOAT_OPERAND(FILE,VALUE) \
206: (REAL_VALUE_ISINF ((VALUE)) \
207: ? (asm_fprintf (FILE, "%I0r%s99e999", ((VALUE) > 0 ? "" : "-")), 0) \
208: : (VALUE) == -0.0 \
209: ? (asm_fprintf (FILE, "%I0r-0.0"), 0) \
210: : (asm_fprintf (FILE, "%I0r%.9g", (VALUE)), 0))
211:
212: #undef ASM_OUTPUT_DOUBLE_OPERAND
213: #define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \
214: (REAL_VALUE_ISINF ((VALUE)) \
215: ? (asm_fprintf (FILE, "%I0r%s99e999", ((VALUE) > 0 ? "" : "-")), 0) \
216: : (VALUE) == -0.0 \
217: ? (asm_fprintf (FILE, "%I0r-0.0"), 0) \
218: : (asm_fprintf (FILE, "%I0r%.17g", (VALUE)), 0))
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