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1.1 root 1: /* Definitions of target machine for GNU compiler.
2: m68k series COFF object files and debugging, version.
3: Copyright (C) 1994 Free Software Foundation, Inc.
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, 59 Temple Place - Suite 330,
20: Boston, MA 02111-1307, USA. */
21:
22: /* This file is included after m68k.h by CPU COFF specific files. It
23: is not a complete target itself. */
24:
25: /* Generate sdb debugging information. */
26:
27: #undef DBX_DEBUGGING_INFO
28: #define SDB_DEBUGGING_INFO
29:
30: /* Output DBX (stabs) debugging information if using -gstabs. */
31:
32: #define DBX_DEBUGGING_INFO
33:
34: #undef PREFERRED_DEBUGGING_TYPE
35: #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
36:
37: /* COFF symbols don't start with an underscore. */
38:
39: #undef USER_LABEL_PREFIX
40: #define USER_LABEL_PREFIX ""
41:
42: /* Use a prefix for local labels, just to be on the save side. */
43:
44: #undef LOCAL_LABEL_PREFIX
45: #define LOCAL_LABEL_PREFIX "."
46:
47: /* Use a register prefix to avoid clashes with external symbols (classic
48: example: `extern char PC;' in termcap). */
49:
50: #undef REGISTER_PREFIX
51: #define REGISTER_PREFIX "%"
52:
53: /* In the machine description we can't use %R, because it will not be seen
54: by ASM_FPRINTF. (Isn't that a design bug?). */
55:
56: #undef REGISTER_PREFIX_MD
57: #define REGISTER_PREFIX_MD "%%"
58:
59: /* config/m68k.md has an explicit reference to the program counter,
60: prefix this by the register prefix. */
61:
62: #define ASM_RETURN_CASE_JUMP return "jmp %%pc@(2,%0:w)"
63:
64: /* Here are the new register names. */
65:
66: #undef REGISTER_NAMES
67: #ifndef SUPPORT_SUN_FPA
68: #define REGISTER_NAMES \
69: {"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7", \
70: "%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%sp", \
71: "%fp0", "%fp1", "%fp2", "%fp3", "%fp4", "%fp5", "%fp6", "%fp7" }
72: #else /* SUPPORTED_SUN_FPA */
73: #define REGISTER_NAMES \
74: {"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7", \
75: "%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%sp", \
76: "%fp0", "%fp1", "%fp2", "%fp3", "%fp4", "%fp5", "%fp6", "%fp7", \
77: "%fpa0", "%fpa1", "%fpa2", "%fpa3", "%fpa4", "%fpa5", "%fpa6", "%fpa7", \
78: "%fpa8", "%fpa9", "%fpa10", "%fpa11", "%fpa12", "%fpa13", "%fpa14", "%fpa15", \
79: "%fpa16", "%fpa17", "%fpa18", "%fpa19", "%fpa20", "%fpa21", "%fpa22", "%fpa23", \
80: "%fpa24", "%fpa25", "%fpa26", "%fpa27", "%fpa28", "%fpa29", "%fpa30", "%fpa31" }
81: #endif /* defined SUPPORT_SUN_FPA */
82:
83: #undef ASM_FILE_START
84: #define ASM_FILE_START(FILE) \
85: output_file_directive ((FILE), main_input_filename)
86:
87: /* Support the ctors and dtors sections for g++. */
88:
89: #define CTORS_SECTION_ASM_OP ".section\t.ctors,\"x\""
90: #define DTORS_SECTION_ASM_OP ".section\t.dtors,\"x\""
91:
92: /* A list of other sections which the compiler might be "in" at any
93: given time. */
94:
95: #undef EXTRA_SECTIONS
96: #define EXTRA_SECTIONS in_ctors, in_dtors
97:
98: /* A list of extra section function definitions. */
99:
100: #undef EXTRA_SECTION_FUNCTIONS
101: #define EXTRA_SECTION_FUNCTIONS \
102: CTORS_SECTION_FUNCTION \
103: DTORS_SECTION_FUNCTION
104:
105: #define CTORS_SECTION_FUNCTION \
106: void \
107: ctors_section () \
108: { \
109: if (in_section != in_ctors) \
110: { \
111: fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
112: in_section = in_ctors; \
113: } \
114: }
115:
116: #define DTORS_SECTION_FUNCTION \
117: void \
118: dtors_section () \
119: { \
120: if (in_section != in_dtors) \
121: { \
122: fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
123: in_section = in_dtors; \
124: } \
125: }
126:
127: #define INT_ASM_OP ".long"
128:
129: /* A C statement (sans semicolon) to output an element in the table of
130: global constructors. */
131: #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
132: do { \
133: ctors_section (); \
134: fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
135: assemble_name (FILE, NAME); \
136: fprintf (FILE, "\n"); \
137: } while (0)
138:
139: /* A C statement (sans semicolon) to output an element in the table of
140: global destructors. */
141: #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
142: do { \
143: dtors_section (); \
144: fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
145: assemble_name (FILE, NAME); \
146: fprintf (FILE, "\n"); \
147: } while (0)
148:
149: /* Don't assume anything about startfiles. */
150:
151: #define STARTFILE_SPEC ""
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