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1.1 root 1: /* Definitions of target machine for GNU compiler.
2: Motorola m88100 running DG/UX.
3: Copyright (C) 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
4: Contributed by Michael Tiemann ([email protected])
5: Enhanced by Michael Meissner ([email protected])
6: Version 2 port by Tom Wood ([email protected])
7:
8: This file is part of GNU CC.
9:
10: GNU CC is free software; you can redistribute it and/or modify
11: it under the terms of the GNU General Public License as published by
12: the Free Software Foundation; either version 2, or (at your option)
13: any later version.
14:
15: GNU CC is distributed in the hope that it will be useful,
16: but WITHOUT ANY WARRANTY; without even the implied warranty of
17: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: GNU General Public License for more details.
19:
20: You should have received a copy of the GNU General Public License
21: along with GNU CC; see the file COPYING. If not, write to
22: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
23:
24: /* You're not seeing double! To transition to dwarf debugging, both are
25: supported. The option -msvr4 and -mversion-03.00 specify (for DG/UX)
26: `real' elf. With these combinations, -g means dwarf. */
27: /* DWARF_DEBUGGING_INFO defined in svr4.h. */
28: #define SDB_DEBUGGING_INFO
29: #define PREFERRED_DEBUGGING_TYPE \
30: (GET_VERSION_0300_SYNTAX ? DWARF_DEBUG : SDB_DEBUG)
31: /* This controls a bug fix in cp-decl.c.
32: For version 2.6, someone should figure out the right condition. */
33: #define RMS_QUICK_HACK_1
34:
35: #ifndef NO_BUGS
36: #define AS_BUG_IMMEDIATE_LABEL
37: /* The DG/UX 4.30 assembler doesn't accept the symbol `fcr63'. */
38: #define AS_BUG_FLDCR
39: #endif
40:
41: #include "svr4.h"
42: #include "m88k/m88k.h"
43:
44: /* Augment TARGET_SWITCHES with the MXDB options. */
45: #define MASK_STANDARD 0x40000000 /* Retain standard information */
46: #define MASK_LEGEND 0x20000000 /* Retain legend information */
47: #define MASK_EXTERNAL_LEGEND 0x10000000 /* Make external legends */
48:
49: #define TARGET_STANDARD (target_flags & MASK_STANDARD)
50: #define TARGET_LEGEND (target_flags & MASK_LEGEND)
51: #define TARGET_EXTERNAL_LEGEND (target_flags & MASK_EXTERNAL_LEGEND)
52:
53: #undef SUBTARGET_SWITCHES
54: #define SUBTARGET_SWITCHES \
55: { "standard", MASK_STANDARD }, \
56: { "legend", MASK_LEGEND }, \
57: { "external-legend", MASK_EXTERNAL_LEGEND }, \
58: /* the following is used only in the *_SPEC's */ \
59: { "keep-coff", 0 },
60:
61: /* Default switches */
62: #undef TARGET_DEFAULT
63: #define TARGET_DEFAULT (MASK_CHECK_ZERO_DIV | \
64: MASK_OCS_DEBUG_INFO | \
65: MASK_OCS_FRAME_POSITION)
66: #undef CPU_DEFAULT
67: #define CPU_DEFAULT MASK_88000
68:
69: /* Macros to be automatically defined. __svr4__ is our extension.
70: __CLASSIFY_TYPE__ is used in the <varargs.h> and <stdarg.h> header
71: files with DG/UX revision 5.40 and later. This allows GNU CC to
72: operate without installing the header files. */
73:
74: #undef CPP_PREDEFINES
75: #define CPP_PREDEFINES "-Dm88000 -Dm88k -Dunix -DDGUX -D__CLASSIFY_TYPE__=2\
76: -D__svr4__ -Asystem(unix) -Asystem(svr4) -Acpu(m88k) -Amachine(m88k)"
77:
78: /* If -m88100 is in effect, add -Dm88100; similarly for -m88110.
79: Here, the CPU_DEFAULT is assumed to be -m88000. If not -ansi,
80: -traditional, or restricting include files to one specific source
81: target, specify full DG/UX features. */
82: #undef CPP_SPEC
83: #define CPP_SPEC "%{!m88000:%{!m88100:%{m88110:-D__m88110__}}} \
84: %{!m88000:%{!m88110:%{m88100:-D__m88100__}}} \
85: %{!ansi:%{!traditional:-D__OPEN_NAMESPACE__}}"
86:
87: /* Assembler support (-V, silicon filter, legends for mxdb). */
88: #undef ASM_SPEC
89: #define ASM_SPEC "\
90: %{V} %{v:%{!V:-V}} %{pipe:%{!.s: - }\
91: %{msvr4:%{mversion-03.00:-KV3}%{!mversion-03.00:%{mversion-*:-KV%*}}}}\
92: %{!mlegend:%{mstandard:-Wc,off}}\
93: %{mlegend:-Wc,-fix-bb,-h\"gcc-2.3.3\",-s\"%i\"\
94: %{traditional:,-lc}%{!traditional:,-lansi-c}\
95: %{mstandard:,-keep-std}\
96: %{mkeep-coff:,-keep-coff}\
97: %{mexternal-legend:,-external}\
98: %{mocs-frame-position:,-ocs}}"
99:
100: /* Override svr4.h. */
101: #undef ASM_FINAL_SPEC
102: #undef STARTFILE_SPEC
103:
104: /* Linker and library spec's.
105: -static, -shared, -symbolic, -h* and -z* access AT&T V.4 link options.
106: -svr4 instructs gcc to place /usr/lib/values-X[cat].o on link the line.
107: The absense of -msvr4 indicates linking done in a COFF environment and
108: adds the link script to the link line. In all environments, the first
109: and last objects are crtbegin.o and crtend.o.
110: When the -G link option is used (-shared and -symbolic) a final link is
111: not being done. */
112: #undef LIB_SPEC
113: #define LIB_SPEC "%{msvr4:%{!shared:-lstaticdgc}} %{!shared:%{!symbolic:-lc}} crtend.o%s"
114: #undef LINK_SPEC
115: #define LINK_SPEC "%{z*} %{h*} %{V} %{v:%{!V:-V}} \
116: %{static:-dn -Bstatic} \
117: %{shared:-G -dy} \
118: %{symbolic:-Bsymbolic -G -dy} \
119: %{pg:-L/usr/lib/libp}%{p:-L/usr/lib/libp}"
120: #undef STARTFILE_SPEC
121: #define STARTFILE_SPEC "%{!shared:%{!symbolic:%{pg:gcrt0.o%s} \
122: %{!pg:%{p:/lib/mcrt0.o}%{!p:/lib/crt0.o}} \
123: %{!msvr4:m88kdgux.ld%s} crtbegin.o%s \
124: %{svr4:%{ansi:/lib/values-Xc.o} \
125: %{!ansi:%{traditional:/lib/values-Xt.o} \
126: %{!traditional:/usr/lib/values-Xa.o}}}}}"
127:
128: /* Fast DG/UX version of profiler that does not require lots of
129: registers to be stored. */
130: #undef FUNCTION_PROFILER
131: #define FUNCTION_PROFILER(FILE, LABELNO) \
132: output_function_profiler (FILE, LABELNO, "gcc.mcount", 0)
133:
134: /* DGUX V.4 isn't quite ELF--yet. */
135: #undef VERSION_0300_SYNTAX
136: #define VERSION_0300_SYNTAX (TARGET_SVR4 && m88k_version_0300)
137:
138: /* Same, but used before OVERRIDE_OPTIONS has been processed. */
139: #define GET_VERSION_0300_SYNTAX \
140: (TARGET_SVR4 && m88k_version != 0 && strcmp (m88k_version, "03.00") >= 0)
141:
142: /* Output the legend info for mxdb when debugging except if standard
143: debugging information only is explicitly requested. */
144: #undef ASM_FIRST_LINE
145: #define ASM_FIRST_LINE(FILE) \
146: do { \
147: if (m88k_version) \
148: fprintf (FILE, "\t%s\t \"%s\"\n", VERSION_ASM_OP, m88k_version); \
149: if (write_symbols != NO_DEBUG \
150: && ! (TARGET_STANDARD && ! TARGET_LEGEND)) \
151: { \
152: fprintf (FILE, ";legend_info -fix-bb -h\"gcc-%s\" -s\"%s\"", \
153: VERSION_STRING, main_input_filename); \
154: fputs (flag_traditional ? " -lc" : " -lansi-c", FILE); \
155: if (TARGET_STANDARD) \
156: fputs (" -keep-std", FILE); \
157: if (TARGET_EXTERNAL_LEGEND) \
158: fputs (" -external", FILE); \
159: if (TARGET_OCS_FRAME_POSITION) \
160: fputs (" -ocs", FILE); \
161: fputc ('\n', FILE); \
162: } \
163: } while (0)
164:
165: /* Override svr4.h. */
166: #undef PTRDIFF_TYPE
167: #undef WCHAR_TYPE
168: #undef WCHAR_TYPE_SIZE
169:
170: /* Override svr4.h and m88k.h except when compiling crtstuff.c. These must
171: be constant strings when compiling crtstuff.c. Otherwise, respect the
172: -mversion-STRING option used. */
173: #if !defined (CRT_BEGIN) && !defined (CRT_END)
174: #undef INIT_SECTION_ASM_OP
175: #define INIT_SECTION_ASM_OP (VERSION_0300_SYNTAX \
176: ? "section\t .init,\"xa\"" \
177: : "section\t .init,\"x\"")
178: #undef CTORS_SECTION_ASM_OP
179: #define CTORS_SECTION_ASM_OP (VERSION_0300_SYNTAX \
180: ? "section\t .ctors,\"aw\"" \
181: : "section\t .ctors,\"d\"")
182: #undef DTORS_SECTION_ASM_OP
183: #define DTORS_SECTION_ASM_OP (VERSION_0300_SYNTAX \
184: ? "section\t .dtors,\"aw\"" \
185: : "section\t .dtors,\"d\"")
186: #endif /* crtstuff.c */
187:
188: /* The lists of global object constructors and global destructors are always
189: placed in the .ctors/.dtors sections. This requires the use of a link
190: script if the COFF linker is used, but otherwise COFF and ELF objects
191: can be intermixed. A COFF object will pad the section to 16 bytes with
192: zeros; and ELF object will not contain padding. We deal with this by
193: putting a -1 marker at the begin and end of the list and ignoring zero
194: entries. */
195:
196: /* Mark the end of the .ctors/.dtors sections with a -1. */
197: #define CTOR_LIST_END \
198: asm (CTORS_SECTION_ASM_OP); \
199: func_ptr __CTOR_END__[1] = { (func_ptr) (-1) }
200:
201: #define DTOR_LIST_END \
202: asm (DTORS_SECTION_ASM_OP); \
203: func_ptr __DTOR_END__[1] = { (func_ptr) (-1) }
204:
205: /* Walk the list ignoring NULL entries till we hit the terminating -1. */
206: #define DO_GLOBAL_CTORS_BODY \
207: do { \
208: int i; \
209: for (i=1;(int)(__CTOR_LIST__[i]) != -1; i++) \
210: if (((int *)__CTOR_LIST__)[i] != 0) \
211: __CTOR_LIST__[i] (); \
212: } while (0)
213:
214: /* Walk the list looking for the terminating -1 that marks the end.
215: Go backward and ignore any NULL entries. */
216: #define DO_GLOBAL_DTORS_BODY \
217: do { \
218: int i; \
219: for (i=1;(int)(__DTOR_LIST__[i]) != -1; i++); \
220: for (i-=1;(int)(__DTOR_LIST__[i]) != -1; i--) \
221: if (((int *)__DTOR_LIST__)[i] != 0) \
222: __DTOR_LIST__[i] (); \
223: } while (0)
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