![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to tm-altos3068.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [GCC 1.x] / gcc / config|
Return to tm-altos3068.h CVS log | Up to [GCC 1.x] / gcc / config |
1.1 root 1: /* Definitions of target machine for GNU compiler. Altos 3068 68020 version.
2: Copyright (C) 1988,1989 Free Software Foundation, Inc.
3:
4: Written by Jyrki Kuoppala <[email protected]>
5: Last modified: Mon Mar 6 22:47:58 1989
6:
7: This file is part of GNU CC.
8:
9: GNU CC is free software; you can redistribute it and/or modify
10: it under the terms of the GNU General Public License as published by
11: the Free Software Foundation; either version 1, or (at your option)
12: any later version.
13:
14: GNU CC is distributed in the hope that it will be useful,
15: but WITHOUT ANY WARRANTY; without even the implied warranty of
16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: GNU General Public License for more details.
18:
19: You should have received a copy of the GNU General Public License
20: along with GNU CC; see the file COPYING. If not, write to
21: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
22:
23:
24: #include "tm-m68k.h"
25:
26: /* See tm-m68k.h. 7 means 68020 with 68881. */
27: /* 5 is without 68881. Change to 7 if you have 68881 */
28:
29: #ifndef TARGET_DEFAULT
30: #define TARGET_DEFAULT 5
31: #endif
32:
33: /* Define __HAVE_68881__ in preprocessor,
34: according to the -m flags.
35: This will control the use of inline 68881 insns in certain macros.
36: Also inform the program which CPU this is for. */
37:
38: #if TARGET_DEFAULT & 02
39:
40: /* -m68881 is the default */
41: #define CPP_SPEC \
42: "%{!msoft-float:-D__HAVE_68881__ }\
43: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
44:
45: #else
46:
47: /* -msoft-float is the default */
48: #define CPP_SPEC \
49: "%{m68881:-D__HAVE_68881__ }\
50: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
51:
52: #endif
53:
54: /* -m68000 requires special flags to the assembler. */
55:
56: #define ASM_SPEC \
57: "%{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}}"
58:
59: /* Names to predefine in the preprocessor for this target machine. */
60:
61: #define CPP_PREDEFINES "-Dmc68000 -DPORTAR -Dmc68k32 -Uvax -Dm68k -Dunix"
62:
63: /* Every structure or union's size must be a multiple of 2 bytes. */
64:
65: #define STRUCTURE_SIZE_BOUNDARY 16
66:
67: /* Generate calls to memcpy, memcmp and memset. */
68: #define TARGET_MEM_FUNCTIONS
69:
70: /* We use gnu assembler, linker and gdb, so we want DBX format. */
71:
72: #define DBX_DEBUGGING_INFO
73:
74: /* Tell some conditionals we will use GAS. Is this really used? */
75:
76: #define USE_GAS
77:
78: /* This is how to output an assembler line defining a `double' constant. */
79:
80: #undef ASM_OUTPUT_DOUBLE
81: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
82: fprintf (FILE, "\t.double 0r%.20e\n", (VALUE))
83:
84: /* This is how to output an assembler line defining a `float' constant. */
85:
86: #undef ASM_OUTPUT_FLOAT
87: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
88: fprintf (FILE, "\t.single 0r%.20e\n", (VALUE))
89:
90: #undef ASM_OUTPUT_FLOAT_OPERAND
91: #define ASM_OUTPUT_FLOAT_OPERAND(FILE,VALUE) \
92: fprintf (FILE, "#0r%.9g", (VALUE))
93:
94: #undef ASM_OUTPUT_DOUBLE_OPERAND
95: #define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \
96: fprintf (FILE, "#0r%.20g", (VALUE))
97:
98: /* Return pointer values in both d0 and a0. */
99:
100: #undef FUNCTION_EXTRA_EPILOGUE
101: #define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE) \
102: { \
103: extern int current_function_returns_pointer; \
104: if ((current_function_returns_pointer) && \
105: ! find_equiv_reg (0, get_last_insn (), 0, 0, 0, 8, Pmode))\
106: fprintf (FILE, "\tmovel d0,a0\n"); \
107: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.