0
|
1 /* Definitions of target machine for GNU compiler, for a PDP with 2BSD
|
|
2 Copyright (C) 1995, 1996, 1999, 2000, 2007 Free Software Foundation, Inc.
|
|
3 Contributed by Michael K. Gschwind (mike@vlsivie.tuwien.ac.at).
|
|
4
|
|
5 This file is part of GCC.
|
|
6
|
|
7 GCC 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 3, or (at your option)
|
|
10 any later version.
|
|
11
|
|
12 GCC 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 GCC; see the file COPYING3. If not see
|
|
19 <http://www.gnu.org/licenses/>. */
|
|
20
|
|
21 #define TWO_BSD
|
|
22
|
|
23 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
|
|
24 the stack pointer does not matter. The value is tested only in
|
|
25 functions that have frame pointers.
|
|
26 No definition is equivalent to always zero. */
|
|
27
|
|
28 #undef EXIT_IGNORE_STACK
|
|
29 #define EXIT_IGNORE_STACK 1
|
|
30
|
|
31 #undef INITIAL_FRAME_POINTER_OFFSET
|
|
32 #define INITIAL_FRAME_POINTER_OFFSET(DEPTH_VAR) \
|
|
33 { \
|
|
34 int offset; \
|
|
35 offset = get_frame_size(); \
|
|
36 offset = (offset <= 2)? 0: (offset -2); \
|
|
37 (DEPTH_VAR) = offset+10; \
|
|
38 }
|
|
39
|
|
40 /* Value should be nonzero if functions must have frame pointers.
|
|
41 Zero means the frame pointer need not be set up (and parms
|
|
42 may be accessed via the stack pointer) in functions that seem suitable.
|
|
43 This is computed in `reload', in reload1.c.
|
|
44 */
|
|
45
|
|
46 #undef FRAME_POINTER_REQUIRED
|
|
47 #define FRAME_POINTER_REQUIRED 1
|
|
48
|
|
49 /* Offset within stack frame to start allocating local variables at.
|
|
50 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
|
|
51 first local allocated. Otherwise, it is the offset to the BEGINNING
|
|
52 of the first local allocated. */
|
|
53 #undef STARTING_FRAME_OFFSET
|
|
54 #define STARTING_FRAME_OFFSET -8
|
|
55
|
|
56
|
|
57 #undef ASM_DECLARE_FUNCTION_NAME
|
|
58 #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \
|
|
59 do { \
|
|
60 ASM_OUTPUT_LABEL (STREAM, NAME); \
|
|
61 fprintf (STREAM, "~~%s:\n", NAME); \
|
|
62 } while (0)
|
|
63
|
|
64 #undef TARGET_UNIX_ASM_DEFAULT
|
|
65 #define TARGET_UNIX_ASM_DEFAULT MASK_UNIX_ASM
|