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