![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to apollo68.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [GCC 2.x] / gcc / config|
Return to apollo68.h CVS log | Up to [GCC 2.x] / gcc / config |
1.1 root 1: /* Definitions of target machine for GNU compiler. Apollo 680X0 version.
2: Copyright (C) 1989 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: #include "m68k.h"
21:
22: /* This symbol may be tested in other files for special Apollo handling */
23:
24: #define TM_APOLLO
25:
26: /* See m68k.h. 7 means 68020 with 68881. */
27:
28: #ifndef TARGET_DEFAULT
29: #define TARGET_DEFAULT 7
30: #endif
31:
32: /* Target switches for the Apollo is the same as in m68k.h, except
33: there is no Sun FPA. */
34:
35: #undef TARGET_SWITCHES
36: #define TARGET_SWITCHES \
37: { { "68020", 5}, \
38: { "c68020", 5}, \
39: { "68881", 2}, \
40: { "bitfield", 4}, \
41: { "68000", -5}, \
42: { "c68000", -5}, \
43: { "soft-float", -0102}, \
44: { "nobitfield", -4}, \
45: { "rtd", 8}, \
46: { "nortd", -8}, \
47: { "short", 040}, \
48: { "noshort", -040}, \
49: { "", TARGET_DEFAULT}}
50:
51: /* Define __HAVE_68881__ in preprocessor,
52: according to the -m flags.
53: This will control the use of inline 68881 insns in certain macros.
54: Also inform the program which CPU this is for. */
55:
56: #if TARGET_DEFAULT & 02
57:
58: /* -m68881 is the default */
59: #define CPP_SPEC \
60: "%{!msoft-float:%{mfpa:-D__HAVE_FPA__ }%{!mfpa:-D__HAVE_68881__ }}\
61: %{!ansi:%{m68000:-Dmc68010 }%{mc68000:-Dmc68010 }%{!mc68000:%{!m68000:-Dmc68020 }}\
62: %{!ansi:-D_APOLLO_SOURCE}}"
63:
64: #else
65:
66: /* -msoft-float is the default */
67: #define CPP_SPEC \
68: "%{m68881:-D__HAVE_68881__ }%{mfpa:-D__HAVE_FPA__ }\
69: %{!ansi:%{m68000:-Dmc68010 }%{mc68000:-Dmc68010 }%{!mc68000:%{!m68000:-Dmc68020 }}\
70: %{!ansi:-D_APOLLO_SOURCE}}"
71:
72: #endif
73:
74: /* Names to predefine in the preprocessor for this target machine. */
75: /* These are the ones defined by Apollo, plus mc68000 for uniformity with
76: GCC on other 68000 systems. */
77:
78: #define CPP_PREDEFINES "-Dapollo -Daegis -Dunix"
79:
80: /* cpp has to support a #sccs directive for the /usr/include files */
81:
82: #define SCCS_DIRECTIVE
83:
84: /* Allow #ident but output nothing for it. */
85:
86: #define IDENT_DIRECTIVE
87: #define ASM_OUTPUT_IDENT(FILE, NAME)
88:
89: /* Allow dollarsigns in identifiers */
90:
91: #define DOLLARS_IN_IDENTIFIERS 2
92:
93: /* -m68000 requires special flags to the assembler.
94: The -C flag is passed to a modified GNU assembler to cause COFF
95: modules to be produced. Remove it if you're not using this.
96: (See [email protected].) */
97:
98: #define ASM_SPEC \
99: "-C %{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}}"
100:
101: /* STARTFILE_SPEC
102: Note that includes knowledge of the default specs for gcc, ie. no
103: args translates to the same effect as -m68881 */
104:
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: #else
110: /* -msoft-float is the default */
111: #define STARTFILE_SPEC \
112: "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
113: #endif
114:
115: /* Specify library to handle `-a' basic block profiling. */
116:
117: #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
118: %{a:/usr/lib/bb_link.o} "
119:
120: /* Debugging is not supported yet */
121:
122: #undef DBX_DEBUGGING_INFO
123: #undef SDB_DEBUGGING_INFO
124:
125: /* Every structure or union's size must be a multiple of 2 bytes. */
126:
127: #define STRUCTURE_SIZE_BOUNDARY 16
128:
129: /* Functions which return large structures get the address
130: to place the wanted value at offset 8 from the frame. */
131:
132: #undef PCC_STATIC_STRUCT_RETURN
133: #undef STRUCT_VALUE_REGNUM
134:
135: /* Caller treats address of return area like a parm. */
136: #define STRUCT_VALUE 0
137:
138: #define STRUCT_VALUE_INCOMING \
139: gen_rtx (MEM, Pmode, \
140: gen_rtx (PLUS, SImode, frame_pointer_rtx, \
141: gen_rtx (CONST_INT, VOIDmode, 8)))
142:
143: /* Boundary (in *bits*) on which stack pointer should be aligned. */
144: #undef STACK_BOUNDARY
145: #define STACK_BOUNDARY 32
146:
147: /* Specify how to pad function arguments.
148: Arguments are not padded at all; the stack is kept aligned on long
149: boundaries. */
150:
151: #define FUNCTION_ARG_PADDING(mode, size) none
152:
153: /* Short integral argument prototype promotion is not done */
154:
155: #undef PROMOTE_PROTOTYPES
156:
157: /* The definition of this macro imposes a limit on the size of
158: an aggregate object which can be treated as if it were a scalar
159: object. */
160:
161: #define MAX_FIXED_MODE_SIZE BITS_PER_WORD
162:
163: /* The definition of this macro implies that there are cases where
164: a scalar value cannot be returned in registers.
165: For Apollo, anything larger than one integer register is returned
166: using the structure-value mechanism, i.e. objects of DFmode are
167: returned that way. */
168:
169: #define RETURN_IN_MEMORY(type) \
170: (GET_MODE_SIZE (TYPE_MODE (type)) > UNITS_PER_WORD)
171:
172: /* This is how to output a reference to a user-level label named NAME.
173: In order to link to Apollo libraries, no underscore is prepended to names.
174: `assemble_name' uses this. */
175:
176: #undef ASM_OUTPUT_LABELREF
177: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
178: fprintf (FILE, "%s", NAME)
179:
180:
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.