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1.1 root 1: /* Definitions of target machine for GNU compiler, for AMD Am29000 CPU, Unix.
2: Copyright (C) 1991 Free Software Foundation, Inc.
3: Contributed by Richard Kenner ([email protected])
4:
5: This file is part of GNU CC.
6:
7: GNU CC is free software; you can redistribute it and/or modify
8: it under the terms of the GNU General Public License as published by
9: the Free Software Foundation; either version 2, or (at your option)
10: any later version.
11:
12: GNU CC is distributed in the hope that it will be useful,
13: but WITHOUT ANY WARRANTY; without even the implied warranty of
14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: GNU General Public License for more details.
16:
17: You should have received a copy of the GNU General Public License
18: along with GNU CC; see the file COPYING. If not, write to
19: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
20:
21:
22: /* This is mostly the same as a29k.h, except that we define unix instead of
23: EPI and define unix-style machine names. */
24:
25: #include "a29k/a29k.h"
26:
27: /* Set our default target to be the 29050; that is the more interesting chip
28: for Unix systems. */
29:
30: #undef TARGET_DEFAULT
31: #define TARGET_DEFAULT (1+2+8+64)
32:
33: #undef CPP_PREDEFINES
34: #define CPP_PREDEFINES "-Dam29k -Da29k -Dam29000 -Asystem(unix) -Acpu(a29k) -Amachine(a29k)"
35:
36: #undef CPP_SPEC
37: #define CPP_SPEC "%{!m29000:-Dam29050 -D__am29050__}"
38:
39: /* Use a default linker configuration file. */
40: #undef LINK_SPEC
41: #define LINK_SPEC "-T default.gld%s"
42:
43: /* Define the magic numbers that we recognize as COFF. */
44:
45: #define MY_ISCOFF(magic) ((magic) == SIPFBOMAGIC || (magic) == SIPRBOMAGIC)
46:
47: /* For some systems, it is best if double-word objects are aligned on a
48: doubleword boundary. We want to maintain compatibility with MetaWare in
49: a29k.h, but do not feel constrained to do so here. */
50:
51: #undef BIGGEST_ALIGNMENT
52: #define BIGGEST_ALIGNMENT 64
53:
54: /* Add shared data as a kludge for now. */
55:
56: #undef ASM_FILE_START
57: #define ASM_FILE_START(FILE) \
58: { char *p, *after_dir = main_input_filename; \
59: if (TARGET_29050) \
60: fprintf (FILE, "\t.cputype 29050\n"); \
61: for (p = main_input_filename; *p; p++) \
62: if (*p == '/') \
63: after_dir = p + 1; \
64: fprintf (FILE, "\t.file "); \
65: output_quoted_string (FILE, after_dir); \
66: fprintf (FILE, "\n"); \
67: if (flag_shared_data) \
68: fprintf (FILE, "\t.sect .shdata,data\n"); \
69: fprintf (FILE, "\t.sect .lit,lit\n"); }
70:
71: /* Output before shared data. */
72:
73: #define SHARED_SECTION_ASM_OP "\t.use .shdata"
74:
75: /* If we want shared data, we have to turn off commons. */
76:
77: #define OVERRIDE_OPTIONS if (flag_shared_data) flag_no_common = 1;
78:
79: #if 0 /* This would be needed except that the 29k doesn't have strict
80: alignment requirements. */
81:
82: #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
83: (((TYPE) != 0) \
84: ? ((TYPE_ALIGN(TYPE) <= PARM_BOUNDARY) \
85: ? PARM_BOUNDARY \
86: : TYPE_ALIGN(TYPE)) \
87: : ((GET_MODE_ALIGNMENT(MODE) <= PARM_BOUNDARY) \
88: ? PARM_BOUNDARY \
89: : GET_MODE_ALIGNMENT(MODE)))
90: #endif
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