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1.1 root 1: /* Definitions of target machine for GNU compiler.
2: Motorola m88100 running DG/UX.
1.1.1.4 ! root 3: Copyright (C) 1988, 92, 93, 94, 1995 Free Software Foundation, Inc.
1.1 root 4: Contributed by Michael Tiemann ([email protected])
1.1.1.3 root 5: Currently maintained by ([email protected])
1.1 root 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 2, 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
1.1.1.4 ! root 21: the Free Software Foundation, 59 Temple Place - Suite 330,
! 22: Boston, MA 02111-1307, USA. */
1.1 root 23:
24: /* You're not seeing double! To transition to dwarf debugging, both are
1.1.1.3 root 25: supported. The option -msvr4 specifies elf. With these combinations,
26: -g means dwarf. */
1.1 root 27: /* DWARF_DEBUGGING_INFO defined in svr4.h. */
28: #define SDB_DEBUGGING_INFO
29: #define PREFERRED_DEBUGGING_TYPE \
1.1.1.3 root 30: (TARGET_SVR4 ? DWARF_DEBUG : SDB_DEBUG)
1.1 root 31:
1.1.1.3 root 32: #ifndef VERSION_INFO2
1.1.1.4 ! root 33: #define VERSION_INFO2 "$Revision: 1.20 $"
1.1.1.3 root 34: #endif
1.1 root 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 */
1.1.1.4 ! root 46: #define MASK_NOLEGEND 0x20000000 /* Discard legend information */
1.1 root 47: #define MASK_EXTERNAL_LEGEND 0x10000000 /* Make external legends */
48:
49: #define TARGET_STANDARD (target_flags & MASK_STANDARD)
1.1.1.4 ! root 50: #define TARGET_NOLEGEND (target_flags & MASK_NOLEGEND)
1.1 root 51: #define TARGET_EXTERNAL_LEGEND (target_flags & MASK_EXTERNAL_LEGEND)
52:
53: #undef SUBTARGET_SWITCHES
54: #define SUBTARGET_SWITCHES \
55: { "standard", MASK_STANDARD }, \
1.1.1.4 ! root 56: { "legend", -MASK_NOLEGEND }, \
! 57: { "no-legend", MASK_NOLEGEND }, \
1.1 root 58: { "external-legend", MASK_EXTERNAL_LEGEND }, \
59: /* the following is used only in the *_SPEC's */ \
60: { "keep-coff", 0 },
61:
62: /* Default switches */
63: #undef TARGET_DEFAULT
64: #define TARGET_DEFAULT (MASK_CHECK_ZERO_DIV | \
65: MASK_OCS_DEBUG_INFO | \
1.1.1.3 root 66: MASK_OCS_FRAME_POSITION | \
67: MASK_STANDARD | \
68: MASK_SVR4)
1.1 root 69: #undef CPU_DEFAULT
70: #define CPU_DEFAULT MASK_88000
71:
72: /* Macros to be automatically defined. __svr4__ is our extension.
73: __CLASSIFY_TYPE__ is used in the <varargs.h> and <stdarg.h> header
74: files with DG/UX revision 5.40 and later. This allows GNU CC to
75: operate without installing the header files. */
76:
77: #undef CPP_PREDEFINES
78: #define CPP_PREDEFINES "-Dm88000 -Dm88k -Dunix -DDGUX -D__CLASSIFY_TYPE__=2\
1.1.1.3 root 79: -D__svr4__ -Asystem(unix) -Acpu(m88k) -Amachine(m88k)"
1.1 root 80:
81: /* If -m88100 is in effect, add -Dm88100; similarly for -m88110.
82: Here, the CPU_DEFAULT is assumed to be -m88000. If not -ansi,
83: -traditional, or restricting include files to one specific source
84: target, specify full DG/UX features. */
85: #undef CPP_SPEC
86: #define CPP_SPEC "%{!m88000:%{!m88100:%{m88110:-D__m88110__}}} \
87: %{!m88000:%{!m88110:%{m88100:-D__m88100__}}} \
1.1.1.3 root 88: %{!ansi:%{!traditional:-D__OPEN_NAMESPACE__}} \
89: %{msvr3:-D_M88KBCS_TARGET} %{!msvr3:-D_DGUX_TARGET}"
1.1 root 90:
91: /* Assembler support (-V, silicon filter, legends for mxdb). */
92: #undef ASM_SPEC
93: #define ASM_SPEC "\
94: %{V} %{v:%{!V:-V}} %{pipe:%{!.s: - }\
1.1.1.3 root 95: %{!msvr3:%{!m88110:-KV3 }%{m88110:-KV04.00 }}}\
1.1.1.4 ! root 96: %{g:\
! 97: %{mno-legend:-Wc,off}\
! 98: %{!mno-legend:-Wc,-fix-bb,-s\"%i\"\
1.1 root 99: %{traditional:,-lc}%{!traditional:,-lansi-c}\
100: %{mstandard:,-keep-std}\
101: %{mkeep-coff:,-keep-coff}\
102: %{mexternal-legend:,-external}\
1.1.1.4 ! root 103: %{mocs-frame-position:,-ocs}}}"
1.1 root 104:
105: /* Override svr4.h. */
106: #undef ASM_FINAL_SPEC
107: #undef STARTFILE_SPEC
108:
109: /* Linker and library spec's.
1.1.1.3 root 110: -msvr4 is the default if -msvr3 is not specified.
1.1 root 111: -static, -shared, -symbolic, -h* and -z* access AT&T V.4 link options.
1.1.1.3 root 112: -svr4 instructs gcc to place /usr/lib/values-X[cat].o on the link line.
113: -msvr3 indicates linking done in a COFF environment and the link
114: script is added to the link line. In all environments, the first
115: and last objects are crtbegin.o (or bcscrtbegin.o) and crtend.o.
116: When the -G link option is used (-shared and -symbolic) a final
117: link is not being done. */
1.1.1.4 ! root 118: #undef ENDFILE_SPEC
! 119: #define ENDFILE_SPEC "crtend.o%s"
1.1 root 120: #undef LIB_SPEC
1.1.1.4 ! root 121: #define LIB_SPEC "%{!msvr3:%{!shared:-lstaticdgc}} %{!shared:%{!symbolic:-lc}}"
1.1 root 122: #undef LINK_SPEC
123: #define LINK_SPEC "%{z*} %{h*} %{V} %{v:%{!V:-V}} \
124: %{static:-dn -Bstatic} \
125: %{shared:-G -dy} \
126: %{symbolic:-Bsymbolic -G -dy} \
127: %{pg:-L/usr/lib/libp}%{p:-L/usr/lib/libp}"
128: #undef STARTFILE_SPEC
129: #define STARTFILE_SPEC "%{!shared:%{!symbolic:%{pg:gcrt0.o%s} \
130: %{!pg:%{p:/lib/mcrt0.o}%{!p:/lib/crt0.o}} \
1.1.1.3 root 131: %{msvr3:m88kdgux.ld%s bcscrtbegin.o%s} \
132: %{!msvr3:crtbegin.o%s} \
1.1 root 133: %{svr4:%{ansi:/lib/values-Xc.o} \
134: %{!ansi:%{traditional:/lib/values-Xt.o} \
135: %{!traditional:/usr/lib/values-Xa.o}}}}}"
136:
1.1.1.3 root 137: #undef GPLUSPLUS_INCLUDE_DIR
138: #define GPLUSPLUS_INCLUDE_DIR "/usr/opt/g++/lib/g++-include"
139:
1.1 root 140: /* Fast DG/UX version of profiler that does not require lots of
141: registers to be stored. */
142: #undef FUNCTION_PROFILER
143: #define FUNCTION_PROFILER(FILE, LABELNO) \
144: output_function_profiler (FILE, LABELNO, "gcc.mcount", 0)
145:
146: /* Output the legend info for mxdb when debugging except if standard
147: debugging information only is explicitly requested. */
148: #undef ASM_FIRST_LINE
149: #define ASM_FIRST_LINE(FILE) \
150: do { \
1.1.1.3 root 151: if (TARGET_SVR4) \
152: { \
153: if (TARGET_88110) \
154: fprintf (FILE, "\t%s\t \"%s\"\n", VERSION_ASM_OP, "04.00"); \
155: else \
156: fprintf (FILE, "\t%s\t \"%s\"\n", VERSION_ASM_OP, "03.00"); \
157: } \
1.1.1.4 ! root 158: if (write_symbols != NO_DEBUG && !TARGET_NOLEGEND) \
1.1 root 159: { \
160: fprintf (FILE, ";legend_info -fix-bb -h\"gcc-%s\" -s\"%s\"", \
161: VERSION_STRING, main_input_filename); \
162: fputs (flag_traditional ? " -lc" : " -lansi-c", FILE); \
163: if (TARGET_STANDARD) \
164: fputs (" -keep-std", FILE); \
165: if (TARGET_EXTERNAL_LEGEND) \
166: fputs (" -external", FILE); \
167: if (TARGET_OCS_FRAME_POSITION) \
168: fputs (" -ocs", FILE); \
169: fputc ('\n', FILE); \
170: } \
171: } while (0)
172:
173: /* Override svr4.h. */
174: #undef PTRDIFF_TYPE
175: #undef WCHAR_TYPE
176: #undef WCHAR_TYPE_SIZE
177:
178: /* Override svr4.h and m88k.h except when compiling crtstuff.c. These must
179: be constant strings when compiling crtstuff.c. Otherwise, respect the
180: -mversion-STRING option used. */
1.1.1.3 root 181: #undef INIT_SECTION_PREAMBLE
182: #undef INIT_SECTION_ASM_OP
183: #undef FINI_SECTION_ASM_OP
184: #undef CTORS_SECTION_ASM_OP
185: #undef DTORS_SECTION_ASM_OP
186:
1.1.1.4 ! root 187: #if defined (CRT_BEGIN) || defined (CRT_END) || defined (L__main)
! 188: /* routines to invoke global constructors and destructors are always COFF
! 189: to enable linking mixed COFF and ELF objects */
! 190: #define FINI_SECTION_ASM_OP ("section .fini,\"x\"")
! 191: #ifndef BCS
! 192: #define INIT_SECTION_PREAMBLE asm ("\taddu\tr31,r31,0x20")
! 193: #endif
1.1 root 194: #undef INIT_SECTION_ASM_OP
1.1.1.4 ! root 195: #define INIT_SECTION_ASM_OP ("section\t .init,\"x\"")
1.1 root 196: #undef CTORS_SECTION_ASM_OP
1.1.1.4 ! root 197: #define CTORS_SECTION_ASM_OP ("section\t .ctors,\"d\"")
1.1 root 198: #undef DTORS_SECTION_ASM_OP
1.1.1.4 ! root 199: #define DTORS_SECTION_ASM_OP ("section\t .dtors,\"d\"")
! 200: #undef OBJECT_FORMAT_ELF
1.1.1.3 root 201: #else
1.1.1.4 ! root 202: #undef INIT_SECTION_ASM_OP
! 203: #define INIT_SECTION_ASM_OP (TARGET_SVR4 \
! 204: ? "section\t .init,\"xa\"" \
! 205: : "section\t .init,\"x\"")
! 206: #undef CTORS_SECTION_ASM_OP
! 207: #define CTORS_SECTION_ASM_OP (TARGET_SVR4 \
! 208: ? "section\t .ctors,\"aw\"" \
! 209: : "section\t .ctors,\"d\"")
! 210: #undef DTORS_SECTION_ASM_OP
! 211: #define DTORS_SECTION_ASM_OP (TARGET_SVR4 \
! 212: ? "section\t .dtors,\"aw\"" \
! 213: : "section\t .dtors,\"d\"")
1.1 root 214: #endif /* crtstuff.c */
215:
216: /* The lists of global object constructors and global destructors are always
217: placed in the .ctors/.dtors sections. This requires the use of a link
218: script if the COFF linker is used, but otherwise COFF and ELF objects
219: can be intermixed. A COFF object will pad the section to 16 bytes with
220: zeros; and ELF object will not contain padding. We deal with this by
221: putting a -1 marker at the begin and end of the list and ignoring zero
222: entries. */
223:
224: /* Mark the end of the .ctors/.dtors sections with a -1. */
1.1.1.4 ! root 225:
! 226: #define CTOR_LIST_BEGIN \
! 227: asm (CTORS_SECTION_ASM_OP); \
! 228: func_ptr __CTOR_LIST__[1] = { (func_ptr) (-1) }
! 229:
1.1 root 230: #define CTOR_LIST_END \
231: asm (CTORS_SECTION_ASM_OP); \
232: func_ptr __CTOR_END__[1] = { (func_ptr) (-1) }
233:
1.1.1.4 ! root 234: #define DTOR_LIST_BEGIN \
! 235: asm (DTORS_SECTION_ASM_OP); \
! 236: func_ptr __DTOR_LIST__[1] = { (func_ptr) (-1) }
! 237:
1.1 root 238: #define DTOR_LIST_END \
239: asm (DTORS_SECTION_ASM_OP); \
240: func_ptr __DTOR_END__[1] = { (func_ptr) (-1) }
241:
242: /* Walk the list ignoring NULL entries till we hit the terminating -1. */
243: #define DO_GLOBAL_CTORS_BODY \
244: do { \
245: int i; \
246: for (i=1;(int)(__CTOR_LIST__[i]) != -1; i++) \
247: if (((int *)__CTOR_LIST__)[i] != 0) \
248: __CTOR_LIST__[i] (); \
249: } while (0)
250:
251: /* Walk the list looking for the terminating -1 that marks the end.
252: Go backward and ignore any NULL entries. */
253: #define DO_GLOBAL_DTORS_BODY \
254: do { \
255: int i; \
256: for (i=1;(int)(__DTOR_LIST__[i]) != -1; i++); \
257: for (i-=1;(int)(__DTOR_LIST__[i]) != -1; i--) \
258: if (((int *)__DTOR_LIST__)[i] != 0) \
259: __DTOR_LIST__[i] (); \
260: } while (0)
1.1.1.4 ! root 261:
! 262: /* The maximum alignment which the object file format can support.
! 263: page alignment would seem to be enough */
! 264: #undef MAX_OFILE_ALIGNMENT
! 265: #define MAX_OFILE_ALIGNMENT 0x1000
! 266:
! 267: /* Must use data section for relocatable constants when pic. */
! 268: #undef SELECT_RTX_SECTION
! 269: #define SELECT_RTX_SECTION(MODE,RTX) \
! 270: { \
! 271: if (flag_pic && symbolic_operand (RTX)) \
! 272: data_section (); \
! 273: else \
! 274: const_section (); \
! 275: }
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