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1.1 root 1: /* Definitions of target machine for GNU compiler. Iris version 6.
2: Copyright (C) 1994, 1995 Free Software Foundation, Inc.
3:
4: This file is part of GNU CC.
5:
6: GNU CC is free software; you can redistribute it and/or modify
7: it under the terms of the GNU General Public License as published by
8: the Free Software Foundation; either version 2, or (at your option)
9: any later version.
10:
11: GNU CC is distributed in the hope that it will be useful,
12: but WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: GNU General Public License for more details.
15:
16: You should have received a copy of the GNU General Public License
17: along with GNU CC; see the file COPYING. If not, write to
18: the Free Software Foundation, 59 Temple Place - Suite 330,
19: Boston, MA 02111-1307, USA. */
20:
21: /* Irix 6 uses DWARF. */
22: #define DWARF_DEBUGGING_INFO
23: #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
24:
25: /* Default to -mips4. */
26: #define TARGET_DEFAULT MASK_ABICALLS|MASK_FLOAT64|MASK_64BIT
27: #define MIPS_ISA_DEFAULT 4
28: #define MULTILIB_DEFAULTS { "EB", "mips4" }
29:
30: #include "mips/iris5gas.h"
31: #include "mips/abi64.h"
32:
33: /* The Irix 6.0.1 assembler doesn't like labels in the text section, so
34: just avoid emitting them. */
35: #define ASM_IDENTIFY_GCC
36: #define ASM_IDENTIFY_LANGUAGE
37:
38: /* Irix 5 stuff that we don't need for Irix 6. */
39: #undef ASM_OUTPUT_UNDEF_FUNCTION
40: #undef ASM_OUTPUT_EXTERNAL_LIBCALL
41: #undef ASM_DECLARE_FUNCTION_SIZE
42:
43: /* Stuff we need for Irix 6 that isn't in Irix 5. */
44:
45: #undef SET_ASM_OP /* Has no equivalent. See ASM_OUTPUT_DEF below. */
46:
47: /* This is how to equate one symbol to another symbol. The syntax used is
48: `SYM1=SYM2'. Note that this is different from the way equates are done
49: with most svr4 assemblers, where the syntax is `.set SYM1,SYM2'. */
50:
51: #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
52: do { fprintf ((FILE), "\t"); \
53: assemble_name (FILE, LABEL1); \
54: fprintf (FILE, " = "); \
55: assemble_name (FILE, LABEL2); \
56: fprintf (FILE, "\n"); \
57: } while (0)
58:
59: #define POPSECTION_ASM_OP ".popsection"
60:
61: #define DEBUG_SECTION ".debug,1,0,0,1"
62: #define LINE_SECTION ".line,1,0,0,1"
63: #define SFNAMES_SECTION ".debug_sfnames,1,0,0,1"
64: #define SRCINFO_SECTION ".debug_srcinfo,1,0,0,1"
65: #define MACINFO_SECTION ".debug_macinfo,1,0,0,1"
66: #define PUBNAMES_SECTION ".debug_pubnames,1,0,0,1"
67: #define ARANGES_SECTION ".debug_aranges,1,0,0,1"
68:
69: #undef ASM_SPEC
70: #if ((TARGET_CPU_DEFAULT | TARGET_DEFAULT) & MASK_GAS) != 0
71: /* GAS */
72: #define ASM_SPEC "\
73: %{mmips-as: \
74: %{!.s:-nocpp} %{.s: %{cpp} %{nocpp}} \
75: %{pipe: %e-pipe is not supported.} \
76: %{K}} \
77: %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} %{v} \
78: %{noasmopt:-O0} \
79: %{!noasmopt:%{O:-O2} %{O1:-O2} %{O2:-O2} %{O3:-O3}} \
80: %{g} %{g0} %{g1} %{g2} %{g3} \
81: %{ggdb:-g} %{ggdb0:-g0} %{ggdb1:-g1} %{ggdb2:-g2} %{ggdb3:-g3} \
82: %{gstabs:-g} %{gstabs0:-g0} %{gstabs1:-g1} %{gstabs2:-g2} %{gstabs3:-g3} \
83: %{gstabs+:-g} %{gstabs+0:-g0} %{gstabs+1:-g1} %{gstabs+2:-g2} %{gstabs+3:-g3} \
84: %{gcoff:-g} %{gcoff0:-g0} %{gcoff1:-g1} %{gcoff2:-g2} %{gcoff3:-g3} \
85: %{membedded-pic}"
86:
87: #else
88: /* not GAS */
89: /* Must pass -g0 to the assembler, otherwise it may overwrite our
90: debug info with its own debug info. */
91: /* Must pass -show instead of -v. */
92: /* Must pass -G 0 to the assembler, otherwise we may get warnings about
93: GOT overflow. */
94: #define ASM_SPEC "\
95: %{!mgas: \
96: %{!.s:-nocpp} %{.s: %{cpp} %{nocpp}} \
97: %{pipe: %e-pipe is not supported.} \
98: %{K}} \
99: %{G*} %{EB} %{EL} %{v:-show} \
100: %{mips1} %{mips2} %{mips3} %{mips4} \
101: %{!mips1: %{!mips2: %{!mips3: %{!mips4: -mips4}}}} \
102: %{noasmopt:-O0} %{!noasmopt:%{O:-O2} %{O1:-O2} %{O2:-O2} %{O3:-O3}} \
103: -g0 -G 0 %{membedded-pic}"
104:
105: #endif
106:
107: /* Stuff for constructors. Start here. */
108:
109: /* The assembler now accepts .section pseudo-ops, but it does not allow
110: one to change the section in the middle of a function. crtstuff relies
111: on this hack, and thus crtstuff won't work here. So, we do init and
112: fini sections exactly the same way as they are done for Irix 5, and
113: we ifdef out the ASM_OUTPUT_{CON,DE}STRUCTOR macros below. */
114:
115: #define CONST_SECTION_ASM_OP_32 "\t.rdata"
116: #define CONST_SECTION_ASM_OP_64 ".section\t.rodata"
117: #define CTORS_SECTION_ASM_OP ".section\t.ctors,1,2,0,4"
118: #define DTORS_SECTION_ASM_OP ".section\t.dtors,1,2,0,4"
119:
120: /* This is the pseudo-op used to generate a 32-bit word of data with a
121: specific value in some section. This is the same for all known svr4
122: assemblers. */
123:
124: #define INT_ASM_OP ".word"
125:
126: /* A default list of other sections which we might be "in" at any given
127: time. For targets that use additional sections (e.g. .tdesc) you
128: should override this definition in the target-specific file which
129: includes this file. */
130:
131: #undef EXTRA_SECTIONS
132: #define EXTRA_SECTIONS in_sdata, in_rdata, in_const, in_ctors, in_dtors, in_bss
133:
134: /* A default list of extra section function definitions. For targets
135: that use additional sections (e.g. .tdesc) you should override this
136: definition in the target-specific file which includes this file. */
137:
138: /* ??? rdata_section is now same as svr4 const_section. */
139:
140: #undef EXTRA_SECTION_FUNCTIONS
141: #define EXTRA_SECTION_FUNCTIONS \
142: void \
143: sdata_section () \
144: { \
145: if (in_section != in_sdata) \
146: { \
147: fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
148: in_section = in_sdata; \
149: } \
150: } \
151: \
152: void \
153: rdata_section () \
154: { \
155: if (in_section != in_rdata) \
156: { \
157: if (mips_isa >= 3) \
158: fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP_64); \
159: else \
160: fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP_32); \
161: in_section = in_rdata; \
162: } \
163: } \
164: CTORS_SECTION_FUNCTION \
165: DTORS_SECTION_FUNCTION
166:
167: #define CTORS_SECTION_FUNCTION \
168: void \
169: ctors_section () \
170: { \
171: if (in_section != in_ctors) \
172: { \
173: fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
174: in_section = in_ctors; \
175: } \
176: }
177:
178: #define DTORS_SECTION_FUNCTION \
179: void \
180: dtors_section () \
181: { \
182: if (in_section != in_dtors) \
183: { \
184: fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
185: in_section = in_dtors; \
186: } \
187: }
188:
189: #if 0
190:
191: /* A C statement (sans semicolon) to output an element in the table of
192: global constructors. */
193: #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
194: do { \
195: ctors_section (); \
196: fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
197: assemble_name (FILE, NAME); \
198: fprintf (FILE, "\n"); \
199: } while (0)
200:
201: /* A C statement (sans semicolon) to output an element in the table of
202: global destructors. */
203: #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
204: do { \
205: dtors_section (); \
206: fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
207: assemble_name (FILE, NAME); \
208: fprintf (FILE, "\n"); \
209: } while (0)
210:
211: #endif
212:
213: /* Stuff for constructors. End here. */
214:
215: /* ??? Perhaps just include svr4.h in this file? */
216:
217: /* ??? SGI assembler may core dump when compiling with -g.
218: Sometimes as succeeds, but then we get a linker error. (cmds.c in 072.sc)
219: Getting rid of .file solves both problems. */
220: #undef ASM_OUTPUT_FILENAME
221: #define ASM_OUTPUT_FILENAME(STREAM, NUM_SOURCE_FILENAMES, NAME) \
222: do \
223: { \
224: fprintf (STREAM, "\t#.file\t%d ", NUM_SOURCE_FILENAMES); \
225: output_quoted_string (STREAM, NAME); \
226: fputs ("\n", STREAM); \
227: } \
228: while (0)
229:
230: /* ??? SGI assembler gives warning whenever .lcomm is used. */
231: #undef ASM_OUTPUT_LOCAL
232: #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN) \
233: do \
234: { \
235: if (mips_isa >= 3) \
236: { \
237: fputs ("\t.section\t.bss\n", STREAM); \
238: ASM_DECLARE_OBJECT_NAME (STREAM, NAME, 0); \
239: ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT)); \
240: ASM_OUTPUT_SKIP (STREAM, SIZE); \
241: fprintf (STREAM, "\t%s\n", POPSECTION_ASM_OP); \
242: } \
243: else \
244: mips_declare_object (STREAM, NAME, "\n\t.lcomm\t", ",%u\n", (SIZE)); \
245: } \
246: while (0)
247:
248: #undef ASM_OUTPUT_INTERNAL_LABEL
249: #define ASM_OUTPUT_INTERNAL_LABEL(STREAM,PREFIX,NUM) \
250: fprintf (STREAM, ".%s%d:\n", PREFIX, NUM)
251:
252: /* This is how to store into the string LABEL
253: the symbol_ref name of an internal numbered label where
254: PREFIX is the class of label and NUM is the number within the class.
255: This is suitable for output with `assemble_name'. */
256:
257: #undef ASM_GENERATE_INTERNAL_LABEL
258: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
259: sprintf (LABEL, "*.%s%d", PREFIX, NUM)
260:
261: #undef STARTFILE_SPEC
262: /* Profiling is supported via libprof1.a not -lc_p as in Irix 3. */
263: #undef STARTFILE_SPEC
264: #define STARTFILE_SPEC \
265: "%{mips1:%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}} \
266: %{mips2:%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}} \
267: %{!mips1:%{!mips2:%{pg:/usr/lib64/gcrt1.o}%{!pg:%{p:/usr/lib64/mcrt1.o /usr/lib64/libprof1.a}%{!p:/usr/lib64/crt1.o}}}}"
268:
269: #undef LIB_SPEC
270: #define LIB_SPEC "%{p:libprof1.a%s}%{pg:libprof1.a%s} -lc"
271:
272: #undef ENDFILE_SPEC
273: #define ENDFILE_SPEC \
274: "%{mips1:crtn.o%s}%{mips2:crtn.o%s}%{!mips1:%{!mips2:/usr/lib64/crtn.o}}"
275:
276: #undef LINK_SPEC
277: #define LINK_SPEC "\
278: %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \
279: %{bestGnum} %{shared} %{non_shared} \
280: %{call_shared} %{no_archive} %{exact_version} \
281: %{!shared: %{!non_shared: %{!call_shared: -call_shared -no_unresolved}}} \
282: -_SYSTYPE_SVR4"
283:
284: /* ??? Debugging does not work. We get many assembler core dumps,
285: and even some linker core dumps. */
286: #undef DBX_DEBUGGING_INFO
287: #undef SDB_DEBUGGING_INFO
288: #undef MIPS_DEBUGGING_INFO
289: #undef DWARF_DEBUGGING_INFO
290: #undef PREFERRED_DEBUGGING_TYPE
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