1 /* Definitions for Intel 386 running SCO Unix System V 3.2 Version 5.
2 Copyright (C) 1992, 1995, 1996 Free Software Foundation, Inc.
3 Contributed by Kean Johnston (hug@netcom.com)
5 This file is part of GNU CC.
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)
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.
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. */
22 #include "i386/i386.h" /* Base i386 target definitions */
23 #include "i386/att.h" /* Use AT&T i386 assembler syntax */
26 #define TARGET_VERSION fprintf (stderr, " (i386, SCO OpenServer 5 Syntax)");
32 #define ALIGN_ASM_OP "\t.align"
34 #undef ASCII_DATA_ASM_OP
35 #define ASCII_DATA_ASM_OP "\t.ascii"
38 #define ASM_BYTE_OP "\t.byte"
41 #define IDENT_ASM_OP "\t.ident"
44 #define COMMON_ASM_OP "\t.comm"
47 #define SET_ASM_OP "\t.set"
50 #define LOCAL_ASM_OP "\t.local"
53 #define INT_ASM_OP "\t.long"
56 #define ASM_SHORT "\t.value"
59 #define ASM_LONG "\t.long"
62 #define ASM_DOUBLE "\t.double"
65 #define TYPE_ASM_OP "\t.type"
68 #define SIZE_ASM_OP "\t.size"
71 #define STRING_ASM_OP "\t.string"
74 #define SKIP_ASM_OP "\t.zero"
77 #define GLOBAL_ASM_OP "\t.globl"
79 #undef CONST_SECTION_ASM_OP
80 #define CONST_SECTION_ASM_OP_COFF "\t.section\t.rodata, \"x\""
81 #define CONST_SECTION_ASM_OP_ELF "\t.section\t.rodata"
82 #define CONST_SECTION_ASM_OP \
83 ((TARGET_ELF) ? CONST_SECTION_ASM_OP_ELF : CONST_SECTION_ASM_OP_COFF)
85 #undef USE_CONST_SECTION
86 #define USE_CONST_SECTION_ELF 1
87 #define USE_CONST_SECTION_COFF 0
88 #define USE_CONST_SECTION \
89 ((TARGET_ELF) ? USE_CONST_SECTION_ELF : USE_CONST_SECTION_COFF)
91 #undef INIT_SECTION_ASM_OP
92 #define INIT_SECTION_ASM_OP_ELF "\t.section\t.init"
93 #define INIT_SECTION_ASM_OP_COFF "\t.section\t.init ,\"x\""
94 #define INIT_SECTION_ASM_OP \
95 ((TARGET_ELF) ? INIT_SECTION_ASM_OP_ELF : INIT_SECTION_ASM_OP_COFF)
97 #undef CTORS_SECTION_ASM_OP
98 #define CTORS_SECTION_ASM_OP_ELF "\t.section\t.ctors,\"aw\""
99 #define CTORS_SECTION_ASM_OP_COFF INIT_SECTION_ASM_OP_COFF
100 #define CTORS_SECTION_ASM_OP \
101 ((TARGET_ELF) ? CTORS_SECTION_ASM_OP_ELF : CTORS_SECTION_ASM_OP_COFF)
103 #undef DTORS_SECTION_ASM_OP
104 #define DTORS_SECTION_ASM_OP_ELF "\t.section\t.dtors, \"aw\""
105 #define DTORS_SECTION_ASM_OP_COFF FINI_SECTION_ASM_OP_COFF
106 #define DTORS_SECTION_ASM_OP \
107 ((TARGET_ELF) ? DTORS_SECTION_ASM_OP_ELF : DTORS_SECTION_ASM_OP_COFF)
109 #undef FINI_SECTION_ASM_OP
110 #define FINI_SECTION_ASM_OP_ELF "\t.section\t.fini"
111 #define FINI_SECTION_ASM_OP_COFF "\t.section\t.fini, \"x\""
112 #define FINI_SECTION_ASM_OP \
113 ((TARGET_ELF) ? FINI_SECTION_ASM_OP_ELF : FINI_SECTION_ASM_OP_COFF)
115 #undef BSS_SECTION_ASM_OP
116 #define BSS_SECTION_ASM_OP "\t.data"
118 #undef TEXT_SECTION_ASM_OP
119 #define TEXT_SECTION_ASM_OP "\t.text"
121 #undef DATA_SECTION_ASM_OP
122 #define DATA_SECTION_ASM_OP "\t.data"
124 #undef TYPE_OPERAND_FMT
125 #define TYPE_OPERAND_FMT "@%s"
127 #undef APPLY_RESULT_SIZE
128 #define APPLY_RESULT_SIZE \
129 (TARGET_ELF) ? size : 116
131 #ifndef ASM_DECLARE_RESULT
132 #define ASM_DECLARE_RESULT(FILE, RESULT)
135 #define SCO_DEFAULT_ASM_COFF(FILE,NAME) \
137 if (output_bytecode) \
138 BC_OUTPUT_LABEL (FILE, NAME); \
140 ASM_OUTPUT_LABEL (FILE, NAME); \
143 #undef ASM_DECLARE_FUNCTION_NAME
144 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
147 fprintf (FILE, "%s\t ", TYPE_ASM_OP); \
148 assemble_name (FILE, NAME); \
150 fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
152 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
153 ASM_OUTPUT_LABEL(FILE, NAME); \
155 SCO_DEFAULT_ASM_COFF(FILE, NAME); \
158 #undef ASM_DECLARE_FUNCTION_SIZE
159 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
161 if (TARGET_ELF) { if (!flag_inhibit_size_directive) \
163 fprintf (FILE, "%s\t ", SIZE_ASM_OP); \
164 assemble_name (FILE, (FNAME)); \
165 fprintf (FILE, ",.-"); \
166 assemble_name (FILE, (FNAME)); \
171 #undef ASM_DECLARE_OBJECT_NAME
172 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
175 fprintf (FILE, "%s\t ", TYPE_ASM_OP); \
176 assemble_name (FILE, NAME); \
178 fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
180 size_directive_output = 0; \
181 if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
183 size_directive_output = 1; \
184 fprintf (FILE, "%s\t ", SIZE_ASM_OP); \
185 assemble_name (FILE, NAME); \
186 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
188 ASM_OUTPUT_LABEL(FILE, NAME); \
190 SCO_DEFAULT_ASM_COFF(FILE, NAME); \
193 #undef ASM_FILE_START_1
194 #define ASM_FILE_START_1(FILE)
196 #undef ASM_FILE_START
197 #define ASM_FILE_START(FILE) \
199 output_file_directive((FILE),main_input_filename); \
200 fprintf ((FILE), "\t.version\t\"01.01\"\n"); \
204 #define ASM_FILE_END(FILE) \
206 fprintf ((FILE), "%s\t\"GCC: (GNU) %s\"\n", \
207 IDENT_ASM_OP, version_string); \
210 #undef ASM_FINISH_DECLARE_OBJECT
211 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
214 char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
215 if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
216 && ! AT_END && TOP_LEVEL \
217 && DECL_INITIAL (DECL) == error_mark_node \
218 && !size_directive_output) \
220 size_directive_output = 1; \
221 fprintf (FILE, "%s\t ", SIZE_ASM_OP); \
222 assemble_name (FILE, name); \
223 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
228 #undef ASM_GENERATE_INTERNAL_LABEL
229 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
232 sprintf (LABEL, "*.%s%d", (PREFIX), (NUM)); \
234 sprintf (LABEL, ".%s%d", (PREFIX), (NUM)); \
237 #undef ASM_OUTPUT_ADDR_DIFF_ELT
238 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
241 fprintf (FILE, "%s _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", ASM_LONG, LPREFIX, VALUE); \
243 fprintf (FILE, "\t.word %s%d-%s%d\n", LPREFIX,VALUE,LPREFIX,REL); \
246 #undef ASM_OUTPUT_ALIGNED_COMMON
247 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
249 fprintf ((FILE), "%s\t", COMMON_ASM_OP); \
250 assemble_name ((FILE), (NAME)); \
252 fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
254 fprintf ((FILE), ",%u\n", (SIZE)); \
257 #undef ASM_OUTPUT_ALIGNED_LOCAL
258 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
261 fprintf ((FILE), "%s\t", LOCAL_ASM_OP); \
262 assemble_name ((FILE), (NAME)); \
263 fprintf ((FILE), "\n"); \
264 ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
266 int align = exact_log2 (ALIGN); \
267 if (align > 2) align = 2; \
268 if (TARGET_SVR3_SHLIB) \
272 ASM_OUTPUT_ALIGN ((FILE), align == -1 ? 2 : align); \
273 fprintf ((FILE), "%s\t", "\t.lcomm"); \
274 assemble_name ((FILE), (NAME)); \
275 fprintf ((FILE), ",%u\n", (SIZE)); \
281 "\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
282 \0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
283 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\\\0\0\0\
284 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\
285 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
286 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
287 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
288 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"
291 #define STRING_LIMIT ((unsigned) 256)
293 #undef ASM_OUTPUT_LIMITED_STRING
294 #define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \
297 register unsigned char *_limited_str = (unsigned char *) (STR); \
298 register unsigned ch; \
299 fprintf ((FILE), "%s\t\"", STRING_ASM_OP); \
300 for (; ch = *_limited_str; _limited_str++) \
302 register int escape; \
303 switch (escape = ESCAPES[ch]) \
309 fprintf ((FILE), "\\%03o", ch); \
312 putc ('\\', (FILE)); \
313 putc (escape, (FILE)); \
317 fprintf ((FILE), "\"\n"); \
322 #undef ASM_OUTPUT_ASCII
323 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
326 register unsigned char *_ascii_bytes = (unsigned char *) (STR); \
327 register unsigned char *limit = _ascii_bytes + (LENGTH); \
328 register unsigned bytes_in_chunk = 0; \
329 for (; _ascii_bytes < limit; _ascii_bytes++) \
331 register unsigned char *p; \
332 if (bytes_in_chunk >= 64) \
334 fputc ('\n', (FILE)); \
335 bytes_in_chunk = 0; \
337 for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \
339 if (p < limit && (p - _ascii_bytes) <= STRING_LIMIT) \
341 if (bytes_in_chunk > 0) \
343 fputc ('\n', (FILE)); \
344 bytes_in_chunk = 0; \
346 ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \
351 if (bytes_in_chunk == 0) \
352 fprintf ((FILE), "%s\t", ASM_BYTE_OP); \
354 fputc (',', (FILE)); \
355 fprintf ((FILE), "0x%02x", *_ascii_bytes); \
356 bytes_in_chunk += 5; \
359 if (bytes_in_chunk > 0) \
360 fprintf ((FILE), "\n"); \
363 while (i < (LENGTH)) \
364 { if (i%10 == 0) { if (i!=0) fprintf ((FILE), "\n"); \
365 fprintf ((FILE), "%s ", ASM_BYTE_OP); } \
366 else fprintf ((FILE), ","); \
367 fprintf ((FILE), "0x%x", ((STR)[i++] & 0377)) ;} \
368 fprintf ((FILE), "\n"); } \
371 #undef ASM_OUTPUT_CASE_LABEL
372 #define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,JUMPTABLE) \
375 ASM_OUTPUT_ALIGN ((FILE), 2); \
376 ASM_OUTPUT_INTERNAL_LABEL((FILE),(PREFIX),(NUM)); \
380 #undef ASM_OUTPUT_CONSTRUCTOR
381 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
385 fprintf (FILE, "%s\t ", INT_ASM_OP); \
386 assemble_name (FILE, NAME); \
387 fprintf (FILE, "\n"); \
390 fprintf (FILE, "\tpushl $"); \
391 assemble_name (FILE, NAME); \
392 fprintf (FILE, "\n"); } \
395 #undef ASM_OUTPUT_DESTRUCTOR
396 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
400 fprintf (FILE, "%s\t ", INT_ASM_OP); \
401 assemble_name (FILE, NAME); \
402 fprintf (FILE, "\n"); \
405 fprintf (FILE, "%s\t ", ASM_LONG); \
406 assemble_name (FILE, NAME); \
407 fprintf (FILE, "\n"); } \
411 #undef ASM_OUTPUT_DOUBLE
412 #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
415 REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), value); \
417 if (sizeof (int) == sizeof (long)) \
419 fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[0]); \
420 fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value[1]); \
424 fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[0]); \
425 fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value[1]); \
428 if (sizeof (int) == sizeof (long)) \
429 fprintf (FILE, "%s 0x%x,0x%x\n", ASM_LONG, value[0], value[1]); \
431 fprintf (FILE, "%s 0x%lx,0x%lx\n", ASM_LONG,value[0],value[1]);} \
434 #undef ASM_OUTPUT_FLOAT
435 #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
438 REAL_VALUE_TO_TARGET_SINGLE ((VALUE), value); \
439 if (sizeof (int) == sizeof (long)) \
440 fprintf((FILE), "%s\t0x%x\n", ASM_LONG, value); \
442 fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, value); \
445 #undef ASM_OUTPUT_LONG_DOUBLE
446 #define ASM_OUTPUT_LONG_DOUBLE(FILE,VALUE) \
449 REAL_VALUE_TO_TARGET_LONG_DOUBLE ((VALUE), l); \
451 if (sizeof (int) == sizeof (long)) \
453 fprintf((FILE), "%s\t0x%x\n", ASM_LONG, l[0]); \
454 fprintf((FILE), "%s\t0x%x\n", ASM_LONG, l[1]); \
455 fprintf((FILE), "%s\t0x%x\n", ASM_LONG, l[2]); \
459 fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, l[0]); \
460 fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, l[1]); \
461 fprintf((FILE), "%s\t0x%lx\n", ASM_LONG, l[2]); \
464 if (sizeof (int) == sizeof (long)) \
465 fprintf (FILE, "%s 0x%x,0x%x,0x%x\n", ASM_LONG, l[0], l[1], l[2]); \
467 fprintf (FILE, "%s 0x%lx,0x%lx,0x%lx\n", ASM_LONG,l[0],l[1],l[2]);} \
470 #undef ASM_OUTPUT_IDENT
471 #define ASM_OUTPUT_IDENT(FILE, NAME) \
472 fprintf (FILE, "%s\t\"%s\"\n", IDENT_ASM_OP, NAME);
474 #undef ASM_GLOBALIZE_LABEL
475 #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
476 (fprintf ((FILE), "%s ", GLOBAL_ASM_OP), assemble_name (FILE, NAME), fputs ("\n", FILE))
478 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
479 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
480 if (TARGET_ELF) ASM_GLOBALIZE_LABEL (FILE, XSTR (FUN, 0))
482 #undef ASM_OUTPUT_INTERNAL_LABEL
483 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
484 fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
486 /* The prefix to add to user-visible assembler symbols. */
488 #undef USER_LABEL_PREFIX
489 #define USER_LABEL_PREFIX ""
491 #undef ASM_OUTPUT_SECTION_NAME
492 #define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME) \
495 fprintf (FILE, ".section\t%s,\"%s\",@progbits\n", NAME, \
496 (DECL) && TREE_CODE (DECL) == FUNCTION_DECL ? "ax" : \
497 (DECL) && TREE_READONLY (DECL) ? "a" : "aw"); \
500 #undef ASM_OUTPUT_SKIP
501 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
504 fprintf (FILE, "%s\t%u\n", SKIP_ASM_OP, (SIZE)); \
506 fprintf ((FILE), "%s\t.,.+%u\n", SET_ASM_OP, (SIZE)); \
510 #undef CTOR_LIST_BEGIN
511 #define CTOR_LIST_BEGIN \
513 asm (CTORS_SECTION_ASM_OP); \
515 STATIC func_ptr __CTOR_LIST__[1] = { (func_ptr) (-1) }; \
521 #define CTOR_LIST_END \
524 asm (CTORS_SECTION_ASM_OP); \
525 STATIC func_ptr __CTOR_LIST__[1] = { (func_ptr) (0) }; \
531 #undef DBX_BLOCKS_FUNCTION_RELATIVE
532 #define DBX_BLOCKS_FUNCTION_RELATIVE 1
534 #undef DBX_FUNCTION_FIRST
535 #define DBX_FUNCTION_FIRST 1
537 #undef DBX_REGISTER_NUMBER
538 #define DBX_REGISTER_NUMBER(n) \
548 : ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (n)+3 \
561 #undef DWARF_DEBUGGING_INFO
562 #undef SDB_DEBUGGING_INFO
563 #undef DBX_DEBUGGING_INFO
564 #undef PREFERRED_DEBUGGING_TYPE
566 #define DWARF_DEBUGGING_INFO 1
567 #define SDB_DEBUGGING_INFO 1
568 #define PREFERRED_DEBUGGING_TYPE \
569 ((TARGET_ELF) ? DWARF_DEBUG: SDB_DEBUG)
571 #undef EXTRA_SECTIONS
572 #define EXTRA_SECTIONS in_const, in_init, in_fini, in_ctors, in_dtors
574 #undef EXTRA_SECTION_FUNCTIONS
575 #define EXTRA_SECTION_FUNCTIONS \
576 CONST_SECTION_FUNCTION \
577 INIT_SECTION_FUNCTION \
578 FINI_SECTION_FUNCTION \
579 CTORS_SECTION_FUNCTION \
580 DTORS_SECTION_FUNCTION
582 #undef CONST_SECTION_FUNCTION
583 #define CONST_SECTION_FUNCTION \
587 extern void text_section(); \
588 if (!USE_CONST_SECTION) \
590 else if (in_section != in_const) \
592 fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
593 in_section = in_const; \
597 #undef FINI_SECTION_FUNCTION
598 #define FINI_SECTION_FUNCTION \
602 if ((!TARGET_ELF) && in_section != in_fini) \
604 fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP); \
605 in_section = in_fini; \
609 #undef INIT_SECTION_FUNCTION
610 #define INIT_SECTION_FUNCTION \
614 if ((!TARGET_ELF) && in_section != in_init) \
616 fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP); \
617 in_section = in_init; \
621 #undef CTORS_SECTION_FUNCTION
622 #define CTORS_SECTION_FUNCTION \
626 if (in_section != in_ctors) \
628 fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
629 in_section = in_ctors; \
633 #undef DTORS_SECTION_FUNCTION
634 #define DTORS_SECTION_FUNCTION \
638 if (in_section != in_dtors) \
640 fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
641 in_section = in_dtors; \
645 #undef FRAME_POINTER_REQUIRED
646 #define FRAME_POINTER_REQUIRED \
647 ((TARGET_ELF) ? 0 : \
648 (current_function_calls_setjmp || current_function_calls_longjmp))
650 #undef JUMP_TABLES_IN_TEXT_SECTION
651 #define JUMP_TABLES_IN_TEXT_SECTION 1
653 #undef LOCAL_LABEL_PREFIX
654 #define LOCAL_LABEL_PREFIX \
655 ((TARGET_ELF) ? "" : ".")
657 #undef MD_EXEC_PREFIX
658 #undef MD_STARTFILE_PREFIX
659 #define MD_EXEC_PREFIX "/usr/ccs/bin/"
660 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
662 #undef NON_SAVING_SETJMP
663 #define NON_SAVING_SETJMP \
664 ((TARGET_ELF) ? 0 : \
665 (current_function_calls_setjmp && current_function_calls_longjmp))
667 #undef NO_IMPLICIT_EXTERN_C
668 #define NO_IMPLICIT_EXTERN_C 1
670 /* JKJ FIXME - examine the rammifications of RETURN_IN_MEMORY and
673 #undef RETURN_POPS_ARGS
674 #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) \
676 (i386_return_pops_args (FUNDECL, FUNTYPE, SIZE)) : \
677 (TREE_CODE (FUNTYPE) == IDENTIFIER_NODE ? 0 \
679 && (TYPE_ARG_TYPES (FUNTYPE) == 0 \
680 || (TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE))) \
681 == void_type_node))) ? (SIZE) \
684 #undef SELECT_SECTION
685 #define SELECT_SECTION(DECL,RELOC) \
687 if (TREE_CODE (DECL) == STRING_CST) \
689 if (! flag_writable_strings) \
694 else if (TREE_CODE (DECL) == VAR_DECL) \
696 if ((TARGET_ELF && flag_pic && RELOC) \
697 || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
698 || !DECL_INITIAL (DECL) \
699 || (DECL_INITIAL (DECL) != error_mark_node \
700 && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
709 #undef SWITCH_TAKES_ARG
710 #define SWITCH_TAKES_ARG(CHAR) \
711 (DEFAULT_SWITCH_TAKES_ARG(CHAR) \
717 #undef WORD_SWITCH_TAKES_ARG
718 #define WORD_SWITCH_TAKES_ARG(STR) \
719 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
720 && strcmp (STR, "Tdata") && strcmp (STR, "Ttext") \
721 && strcmp (STR, "Tbss"))
723 #undef TARGET_DEFAULT
724 #define TARGET_DEFAULT 0301
726 #undef HANDLE_SYSV_PRAGMA
727 #define HANDLE_SYSV_PRAGMA 1
729 #undef SCCS_DIRECTIVE
730 #define SCCS_DIRECTIVE 1
733 * Define sizes and types
738 #undef WCHAR_TYPE_SIZE
739 #undef LONG_DOUBLE_TYPE_SIZE
740 #define LONG_DOUBLE_TYPE_SIZE 96
741 #define SIZE_TYPE "unsigned int"
742 #define PTRDIFF_TYPE "int"
743 #define WCHAR_TYPE "long int"
744 #define WCHAR_TYPE_SIZE BITS_PER_WORD
747 /* Please note that these specs may look messy but they are required in
748 order to emulate the SCO Development system as closely as possible.
749 With SCO Open Server 5.0, you now get the linker and assembler free,
750 so that is what these specs are targeted for. These utilities are
751 very argument sensitive: a space in the wrong place breaks everything.
752 So RMS, please forgive this mess. It works.
754 Parameters which can be passed to gcc, and their SCO equivalents:
755 GCC Parameter SCO Equivalent
759 -Xpg4plus -a xpg4plus
762 As with SCO, the default is XPG4 plus mode. SCO also allows you to
763 specify a C dialect with -Xt, -Xa, -Xc, -Xk and -Xm. These are passed
764 on to the assembler and linker in the same way that the SCO compiler
767 SCO also allows you to compile, link and generate either ELF or COFF
768 binaries. With gcc, as with the SCO compiler, the default is coff.
769 Specify -melf to gcc to produce elf binaries. -fpic will get the
770 assembler and linker to produce PIC code.
773 /* Set up assembler flags for PIC and ELF compilations */
776 "-b %{melf:elf}%{!melf:coff \
777 %{static:%e-static only valid with -melf} \
778 %{shared:%e-shared only valid with -melf} \
779 %{symbolic:%e-symbolic only valid with -melf}} \
780 %{Ym,*} %{Yd,*} %{Wa,*:%*} \
781 %{melf:-E%{Xa:a}%{!Xa:%{Xc:c}%{!Xc:%{Xk:k}%{!Xk:%{Xt:t}%{!Xt:a}}}},%{ansi:ansi}%{!ansi:%{posix:posix}%{!posix:%{Xpg4:xpg4}%{!Xpg4:%{Xpg4plus:XPG4PLUS}%{!Xpg4plus:%{Xods30:ods30}%{!Xods30:XPG4PLUS}}}}},ELF %{Qn:} %{!Qy:-Qn}}"
783 /* Use crt1.o as a startup file and crtn.o as a closing file. */
785 #undef STARTFILE_SPEC
786 #define STARTFILE_SPEC \
789 %{pg:gcrt.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}}} \
790 %{ansi:values-Xc.o%s} \
792 %{traditional:values-Xt.o%s} \
794 %{Xa:values-Xa.o%s} \
795 %{!Xa:%{Xc:values-Xc.o%s} \
796 %{!Xc:%{Xk:values-Xk.o%s} \
797 %{!Xk:%{Xt:values-Xt.o%s} \
798 %{!Xt:values-Xa.o%s}}}}}} \
799 %{!melf:crtbegin.o%s} \
800 %{melf:%{static:crtbegin.o%s}%{!static:crtbeginS.o%s}}"
803 #define ENDFILE_SPEC \
804 "%{melf:%{!static:crtendS.o%s}%{static:crtend.o%s}} \
805 %{!melf:crtend.o%s} \
806 %{pg:gcrtn.o%s}%{!pg:crtn.o%s}"
808 #undef CPP_PREDEFINES
809 #define CPP_PREDEFINES \
810 "-Di386 -Asystem(unix) -Asystem(svr3) -Acpu(i386) -Amachine(i386)"
812 /* You are in a maze of GCC specs ... all alike */
816 "%{fpic:%{!melf:%e-fpic is only valid with -melf}} \
817 %{fPIC:%{!melf:%e-fPIC is only valid with -melf}} \
818 -D__i386 -D__unix -D_SCO_DS=1 -D_M_I386 -D_M_XENIX -D_M_UNIX \
819 %{!Xods30:-D_STRICT_NAMES} \
820 %{!ansi:%{!posix:%{!Xods30:-D_SCO_XPG_VERS=4}}} \
821 %{ansi:-isystem include/ansi%s -isystem /usr/include/ansi -D_STRICT_ANSI} \
823 %{posix:-isystem include/posix%s -isystem /usr/include/posix \
824 -D_POSIX_C_SOURCE=2 -D_POSIX_SOURCE=1} \
825 %{!posix:%{Xpg4:-isystem include/xpg4%s -isystem /usr/include/xpg4 \
827 %{!Xpg4:-D_M_I86 -D_M_I86SM -D_M_INTERNAT -D_M_SDATA -D_M_STEXT \
828 -D_M_BITFIELDS -D_M_SYS5 -D_M_SYSV -D_M_SYSIII \
829 -D_M_WORDSWAP -Dunix -DM_I386 -DM_UNIX -DM_XENIX \
830 %{Xods30:-isystem include/ods_30_compat%s \
831 -isystem /usr/include/ods_30_compat \
832 -D_SCO_ODS_30 -DM_I86 -DM_I86SM -DM_SDATA -DM_STEXT \
833 -DM_BITFIELDS -DM_SYS5 -DM_SYSV -DM_INTERNAT -DM_SYSIII \
835 %{scointl:-DM_INTERNAT -D_M_INTERNAT} \
836 %{traditional:-D_KR -D_SVID -D_NO_PROTOTYPE} \
838 %{!melf:-D_M_COFF -D_SCO_COFF} \
839 %{melf:%{fpic:-D__PIC__ -D__pic__} \
840 %{fPIC:%{!fpic:-D__PIC__ -D__pic__}}} \
841 %{Xa:-D_SCO_C_DIALECT=1} \
842 %{!Xa:%{Xc:-D_SCO_C_DIALECT=3} \
843 %{!Xc:%{Xk:-D_SCO_C_DIALECT=4} \
844 %{!Xk:%{Xt:-D_SCO_C_DIALECT=2} \
845 %{!Xt:-D_SCO_C_DIALECT=1}}}} \
846 %{traditional:-traditional -D_KR -D_NO_PROTOTYPE}"
850 "-b %{melf:elf}%{!melf:coff \
851 %{static:%e-static only valid with -melf} \
852 %{shared:%e-shared only valid with -melf} \
853 %{symbolic:%e-symbolic only valid with -melf} \
854 %{fpic:%e-fpic only valid with -melf} \
855 %{fPIC:%e-fPIC only valid with -melf}} \
856 -R%{Xa:a}%{!Xa:%{Xc:c}%{!Xc:%{Xk:k}%{!Xk:%{Xt:t}%{!Xt:a}}}},%{ansi:ansi}%{!ansi:%{posix:posix}%{!posix:%{Xpg4:xpg4}%{!Xpg4:%{Xpg4plus:XPG4PLUS}%{!Xpg4plus:%{Xods30:ods30}%{!Xods30:XPG4PLUS}}}}},%{melf:ELF}%{!melf:COFF} \
857 %{Wl,*%*} %{YP,*} %{YL,*} %{YU,*} \
858 %{!YP,*:%{p:-YP,/usr/ccs/libp:/lib/libp:/usr/lib/libp:/usr/ccs/lib:/lib:/usr/lib} \
859 %{!p:-YP,/usr/ccs/lib:/lib:/usr/lib}} \
860 %{h*} %{static:-dn -Bstatic} %{shared:-G -dy %{!z*:-z text}} \
861 %{symbolic:-Bsymbolic -G -dy %{!z*:-z text}} %{z*} %{R*} %{Y*} \
862 %{G:-G} %{melf:%{Qn:} %{!Qy:-Qn}}"
864 /* Library spec. If we are not building a shared library, provide the
865 standard libraries, as per the SCO compiler. */
869 "%{!shared:%{!symbolic:-lcrypt -lgen -lc}}"
872 #define LIBGCC_SPEC \
873 "%{!melf:-lgcc}%{melf:%{!shared:%{!symbolic:-lgcc-elf}}}"
875 #define MASK_ELF 010000000000 /* Mask for elf generation */
876 #define TARGET_ELF (target_flags & MASK_ELF)
878 #undef SUBTARGET_SWITCHES
879 #define SUBTARGET_SWITCHES { "elf", MASK_ELF },
881 #define NO_DOLLAR_IN_LABEL
884 Here comes some major hackery to get the crt stuff to compile properly.
885 Since we can (and do) compile for both COFF and ELF environments, we
886 set things up accordingly, based on the pre-processor defines for ELF
887 and COFF. This is insane, but then I guess having one compiler with a
888 single back-end supporting two vastly different file format types is
889 a little insane too. But it is not impossible and we get a useful
890 compiler at the end of the day. Onward we go ...
893 #if defined(CRT_BEGIN) || defined(CRT_END) || defined(IN_LIBGCC2)
894 # undef OBJECT_FORMAT_ELF
896 # undef INIT_SECTION_ASM_OP
897 # undef FINI_SECTION_ASM_OP
898 # undef CTORS_SECTION_ASM_OP
899 # undef DTORS_SECTION_ASM_OP
900 # undef CTOR_LIST_BEGIN
901 # undef CTOR_LIST_END
902 # undef DO_GLOBAL_CTORS_BODY
904 # if defined (_SCO_ELF)
905 # define OBJECT_FORMAT_ELF
907 # define INIT_SECTION_ASM_OP INIT_SECTION_ASM_OP_ELF
908 # define FINI_SECTION_ASM_OP FINI_SECTION_ASM_OP_ELF
909 # define DTORS_SECTION_ASM_OP DTORS_SECTION_ASM_OP_ELF
910 # define CTORS_SECTION_ASM_OP CTORS_SECTION_ASM_OP_ELF
911 # else /* ! _SCO_ELF */
912 # define INIT_SECTION_ASM_OP INIT_SECTION_ASM_OP_COFF
913 # define FINI_SECTION_ASM_OP FINI_SECTION_ASM_OP_COFF
914 # define DTORS_SECTION_ASM_OP DTORS_SECTION_ASM_OP_COFF
915 # define CTORS_SECTION_ASM_OP CTORS_SECTION_ASM_OP_COFF
916 # define CTOR_LIST_BEGIN asm (INIT_SECTION_ASM_OP); asm ("pushl $0")
917 # define CTOR_LIST_END CTOR_LIST_BEGIN
918 # define DO_GLOBAL_CTORS_BODY \
920 func_ptr *p, *beg = alloca(0); \
924 # endif /* ! _SCO_ELF */
925 #endif /* CRT_BEGIN !! CRT_END */