1 /* svr4.h -- operating system specific defines to be used when
2 targeting GCC for some generic System V Release 4 system.
3 Copyright (C) 1991 Free Software Foundation, Inc.
5 Written by Ron Guilmette (rfg@ncd.com).
7 This file is part of GNU CC.
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)
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.
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
21 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
23 To use this file, make up a file with a name like:
27 where ????? is replaced by the name of the basic hardware that you
28 are targeting for. Then, in the file ?????svr4.h, put something
34 followed by any really system-specific defines (or overrides of
35 defines) which you find that you need. For example, CPP_PREDEFINES
36 is defined here with only the defined -Dunix and -DSVR4. You should
37 probably override that in your target-specific ?????svr4.h file
38 with a set of defines that includes these, but also contains an
39 appropriate define for the type of hardware that you are targeting.
42 /* For the sake of libgcc2.c, indicate target supports atexit. */
45 /* Cpp, assembler, linker, library, and startfile spec's. */
47 /* This defines which switch letters take arguments. On svr4, most of
48 the normal cases (defined in gcc.c) apply, and we also have -h* and
49 -z* options (for the linker). Note however that there is no such
50 thing as a -T option for svr4. */
52 #define SWITCH_TAKES_ARG(CHAR) \
65 /* This defines which multi-letter switches take arguments. On svr4,
66 there are no such switches except those implemented by GCC itself. */
68 #define WORD_SWITCH_TAKES_ARG(STR) \
69 (!strcmp (STR, "include") || !strcmp (STR, "imacros") \
70 || !strcmp (STR, "aux-info"))
72 /* You should redefine CPP_PREDEFINES in any file which includes this one.
73 The definition should be appropriate for the type of target system
74 involved, and it should include any -A (assertion) options which are
75 appropriate for the given target system. */
78 /* Provide an ASM_SPEC appropriate for svr4. Here we try to support as
79 many of the specialized svr4 assembler options as seems reasonable,
80 given that there are certain options which we can't (or shouldn't)
81 support directly due to the fact that they conflict with other options
82 for other svr4 tools (e.g. ld) or with other options for GCC itself.
83 For example, we don't support the -o (output file) or -R (remove
84 input file) options because GCC already handles these things. We
85 also don't support the -m (run m4) option for the assembler because
86 that conflicts with the -m (produce load map) option of the svr4
87 linker. We do however allow passing arbitrary options to the svr4
88 assembler via the -Wa, option.
90 Note that gcc doesn't allow a space to follow -Y in a -Ym,* or -Yd,*
96 "%{V} %{v:%{!V:-V}} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
98 /* svr4 assemblers need the `-' (indicating input from stdin) to come after
99 the -o option (and its argument) for some reason. If we try to put it
100 before the -o option, the assembler will try to read the file named as
101 the output file in the -o option as an input file (after it has already
102 written some stuff to it) and the binary stuff contained therein will
103 cause totally confuse the assembler, resulting in many spurious error
106 #undef ASM_FINAL_SPEC
107 #define ASM_FINAL_SPEC "%{pipe:-}"
109 /* Under svr4, the normal location of the various *crt*.o files is the
110 /usr/ccs/lib directory. */
112 #undef MD_STARTFILE_PREFIX
113 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
115 /* Provide a LIB_SPEC appropriate for svr4. Here we tack on the default
116 standard C library (unless we are building a shared library) followed by
117 our own magical crtend.o file (see crtstuff.c) which provides part of
118 the support for getting C++ file-scope static object constructed before
119 entering `main', followed by the normal svr3/svr4 "finalizer" file,
120 which is either `gcrtn.o' or `crtn.o'. */
124 "%{!shared:%{!symbolic:-lc}} \
126 %{!shared:%{!symbolic:%{pg:gcrtn.o}%{!pg:crtn.o%s}}}"
128 /* Provide a LINK_SPEC appropriate for svr4. Here we provide support
129 for the special GCC options -static, -shared, and -symbolic which
130 allow us to link things in one of these three modes by applying the
131 appropriate combinations of options at link-time. We also provide
132 support here for as many of the other svr4 linker options as seems
133 reasonable, given that some of them conflict with options for other
134 svr4 tools (e.g. the assembler). In particular, we do support the
135 -h*, -z*, -V, -b, -t, -Qy, -Qn, and -YP* options here, and the -e*,
136 -l*, -o*, -r, -s, -u*, and -L* options are directly supported
137 by gcc.c itself. We don't directly support the -m (generate load
138 map) option because that conflicts with the -m (run m4) option of
139 the svr4 assembler. We also don't directly support the svr4 linker's
140 -I* or -M* options because these conflict with existing GCC options.
141 We do however allow passing arbitrary options to the svr4 linker
142 via the -Wl, option. We don't support the svr4 linker's -a option
143 at all because it is totally useless and because it conflicts with
146 Note that gcc doesn't allow a space to follow -Y in a -YP,* option.
148 When the -G link option is used (-shared and -symbolic) a final link is
152 #define LINK_SPEC "%{h*} %{V} %{v:%{!V:-V}} \
154 %{static:-dn -Bstatic} \
156 %{symbolic:-Bsymbolic -G -dy} \
159 %{!YP,*:%{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
160 %{!p:-Y P,/usr/ccs/lib:/usr/lib}} \
163 /* Gcc automatically adds in one of the files /usr/ccs/lib/values-Xc.o,
164 /usr/ccs/lib/values-Xa.o, or /usr/ccs/lib/values-Xt.o for each final
165 link step (depending upon the other gcc options selected, such as
166 -traditional and -ansi). These files each contain one (initialized)
167 copy of a special variable called `_lib_version'. Each one of these
168 files has `_lib_version' initialized to a different (enum) value.
169 The SVR4 library routines query the value of `_lib_version' at run
170 to decide how they should behave. Specifically, they decide (based
171 upon the value of `_lib_version') if they will act in a strictly ANSI
172 conforming manner or not.
175 #undef STARTFILE_SPEC
176 #define STARTFILE_SPEC "%{!shared: \
178 %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} \
179 %{pg:gcrti.o%s}%{!pg:crti.o%s} \
180 %{ansi:values-Xc.o%s} \
182 %{traditional:values-Xt.o%s} \
183 %{!traditional:values-Xa.o%s}}}} crtbegin.o%s"
185 /* Attach a special .ident directive to the end of the file to identify
186 the version of GCC which compiled this code. The format of the
187 .ident string is patterned after the ones produced by native svr4
190 #define ASM_FILE_END(FILE) \
192 fprintf ((FILE), "\t.ident\t\"GCC: (GNU) %s\"\n", \
196 /* Allow #sccs in preprocessor. */
198 #define SCCS_DIRECTIVE
200 /* Output #ident as a .ident. */
202 #define ASM_OUTPUT_IDENT(FILE, NAME) \
203 fprintf (FILE, "\t.ident \"%s\"\n", NAME);
205 /* Use periods rather than dollar signs in special g++ assembler names. */
207 #define NO_DOLLAR_IN_LABEL
209 /* Writing `int' for a bitfield forces int alignment for the structure. */
211 #define PCC_BITFIELD_TYPE_MATTERS 1
213 /* Implicit library calls should use memcpy, not bcopy, etc. */
215 #define TARGET_MEM_FUNCTIONS
217 /* System V Release 4 uses DWARF debugging info. */
219 #define DWARF_DEBUGGING_INFO
221 /* The numbers used to denote specific machine registers in the System V
222 Release 4 DWARF debugging information are quite likely to be totally
223 different from the numbers used in BSD stabs debugging information
224 for the same kind of target machine. Thus, we undefine the macro
225 DBX_REGISTER_NUMBER here as an extra inducement to get people to
226 provide proper machine-specific definitions of DBX_REGISTER_NUMBER
227 (which is also used to provide DWARF registers numbers in dwarfout.c)
228 in their tm.h files which include this file. */
230 #undef DBX_REGISTER_NUMBER
232 /* Define the actual types of some ANSI-mandated types. (These
233 definitions should work for most SVR4 systems). */
236 #define SIZE_TYPE "unsigned int"
239 #define PTRDIFF_TYPE "int"
242 #define WCHAR_TYPE "long int"
244 #undef WCHAR_TYPE_SIZE
245 #define WCHAR_TYPE_SIZE BITS_PER_WORD
247 #define MULTIBYTE_CHARS
250 #define ASM_BYTE_OP "\t.byte"
252 /* This is how to begin an assembly language file. Most svr4 assemblers want
253 at least a .file directive to come first, and some want to see a .version
254 directive come right after that. Here we just establish a default
255 which generates only the .file directive. If you need a .version
256 directive for any specific target, you should override this definition
257 in the target-specific file which includes this one. */
259 #undef ASM_FILE_START
260 #define ASM_FILE_START(FILE) \
261 output_file_directive ((FILE), main_input_filename)
263 /* This is how to allocate empty space in some section. The .zero
264 pseudo-op is used for this on most svr4 assemblers. */
266 #define SKIP_ASM_OP ".zero"
268 #undef ASM_OUTPUT_SKIP
269 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
270 fprintf (FILE, "\t%s\t%u\n", SKIP_ASM_OP, (SIZE))
272 /* This is how to output a reference to a user-level label named NAME.
273 `assemble_name' uses this.
275 For System V Release 4 the convention is *not* to prepend a leading
276 underscore onto user-level symbol names. */
278 #undef ASM_OUTPUT_LABELREF
279 #define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "%s", NAME)
281 /* This is how to output an internal numbered label where
282 PREFIX is the class of label and NUM is the number within the class.
284 If the NUM argument is negative, we don't use it when generating the
287 For most svr4 systems, the convention is that any symbol which begins
288 with a period is not put into the linker symbol table by the assembler.
291 #undef ASM_OUTPUT_INTERNAL_LABEL
292 #define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \
294 if ((int) (NUM) >= 0) \ ???
295 fprintf (FILE, ".%s%d:\n", PREFIX, NUM); \
297 fprintf (FILE, ".%s:\n", PREFIX); \
300 /* This is how to store into the string LABEL
301 the symbol_ref name of an internal numbered label where
302 PREFIX is the class of label and NUM is the number within the class.
303 This is suitable for output with `assemble_name'.
305 If the NUM argument is negative, we don't use it when generating the
308 For most svr4 systems, the convention is that any symbol which begins
309 with a period is not put into the linker symbol table by the assembler.
312 #undef ASM_GENERATE_INTERNAL_LABEL
313 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
315 if ((int) (NUM) >= 0) \
316 sprintf (LABEL, "*.%s%d", PREFIX, NUM); \
318 sprintf (LABEL, "*.%s", PREFIX); \
321 /* The standard SVR4 assembler seems to require that certain builtin
322 library routines (e.g. .udiv) be explicitly declared as .globl
323 in each assembly file where they are referenced. */
325 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
326 ASM_GLOBALIZE_LABEL (FILE, XSTR (FUN, 0))
328 /* This says how to output assembler code to declare an
329 uninitialized external linkage data object. Under SVR4,
330 the linker seems to want the alignment of data objects
331 to depend on their types. We do exactly that here. */
333 #define COMMON_ASM_OP ".comm"
335 #undef ASM_OUTPUT_ALIGNED_COMMON
336 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
338 fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \
339 assemble_name ((FILE), (NAME)); \
340 fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
343 /* This says how to output assembler code to declare an
344 uninitialized internal linkage data object. Under SVR4,
345 the linker seems to want the alignment of data objects
346 to depend on their types. We do exactly that here. */
348 #define BSS_ASM_OP ".bss"
350 #undef ASM_OUTPUT_ALIGNED_LOCAL
351 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
353 fprintf ((FILE), "\t%s\t%s,%u,%u\n", \
354 BSS_ASM_OP, (NAME), (SIZE), (ALIGN) / BITS_PER_UNIT); \
357 /* This is the pseudo-op used to generate a 32-bit word of data with a
358 specific value in some section. This is the same for all known svr4
361 #define INT_ASM_OP ".long"
363 /* This is the pseudo-op used to generate a contiguous sequence of byte
364 values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
365 AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */
367 #undef ASCII_DATA_ASM_OP
368 #define ASCII_DATA_ASM_OP ".ascii"
370 /* Support const sections and the ctors and dtors sections for g++.
371 Note that there appears to be two different ways to support const
372 sections at the moment. You can either #define the symbol
373 READONLY_DATA_SECTION (giving it some code which switches to the
374 readonly data section) or else you can #define the symbols
375 EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
376 SELECT_RTX_SECTION. We do both here just to be on the safe side. */
378 #define USE_CONST_SECTION 1
380 #define CONST_SECTION_ASM_OP ".section\t.rodata"
381 #define CTORS_SECTION_ASM_OP ".section\t.ctors,\"a\",@progbits"
382 #define DTORS_SECTION_ASM_OP ".section\t.dtors,\"a\",@progbits"
384 /* On svr4, we *do* have support for the .init section, and we can put
385 stuff in there to be executed before `main'. We let crtstuff.c and
386 other files know this by defining the following symbol. The definition
387 says how to change sections to the .init section. This is the same
388 for all know svr4 assemblers. */
390 #define INIT_SECTION_ASM_OP ".section\t.init"
392 /* A default list of other sections which we might be "in" at any given
393 time. For targets that use additional sections (e.g. .tdesc) you
394 should override this definition in the target-specific file which
395 includes this file. */
397 #undef EXTRA_SECTIONS
398 #define EXTRA_SECTIONS in_const, in_ctors, in_dtors
400 /* A default list of extra section function definitions. For targets
401 that use additional sections (e.g. .tdesc) you should override this
402 definition in the target-specific file which includes this file. */
404 #undef EXTRA_SECTION_FUNCTIONS
405 #define EXTRA_SECTION_FUNCTIONS \
406 CONST_SECTION_FUNCTION \
407 CTORS_SECTION_FUNCTION \
408 DTORS_SECTION_FUNCTION
410 #define READONLY_DATA_SECTION() const_section ()
412 extern void text_section();
414 #define CONST_SECTION_FUNCTION \
418 if (!USE_CONST_SECTION) \
420 else if (in_section != in_const) \
422 fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
423 in_section = in_const; \
427 #define CTORS_SECTION_FUNCTION \
431 if (in_section != in_ctors) \
433 fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
434 in_section = in_ctors; \
438 #define DTORS_SECTION_FUNCTION \
442 if (in_section != in_dtors) \
444 fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
445 in_section = in_dtors; \
449 /* A C statement (sans semicolon) to output an element in the table of
450 global constructors. */
451 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
454 fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
455 assemble_name (FILE, NAME); \
456 fprintf (FILE, "\n"); \
459 /* A C statement (sans semicolon) to output an element in the table of
460 global destructors. */
461 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
464 fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
465 assemble_name (FILE, NAME); \
466 fprintf (FILE, "\n"); \
469 /* A C statement or statements to switch to the appropriate
470 section for output of DECL. DECL is either a `VAR_DECL' node
471 or a constant of some sort. RELOC indicates whether forming
472 the initial value of DECL requires link-time relocations. */
474 #define SELECT_SECTION(DECL,RELOC) \
476 if (TREE_CODE (DECL) == STRING_CST) \
478 if (! flag_writable_strings) \
483 else if (TREE_CODE (DECL) == VAR_DECL) \
485 if ((flag_pic && RELOC) \
486 || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL)) \
495 /* A C statement or statements to switch to the appropriate
496 section for output of RTX in mode MODE. RTX is some kind
497 of constant in RTL. The argument MODE is redundant except
498 in the case of a `const_int' rtx. Currently, these always
499 go into the const section. */
501 #undef SELECT_RTX_SECTION
502 #define SELECT_RTX_SECTION(MODE,RTX) const_section()
504 /* Define the strings used for the special svr4 .type and .size directives.
505 These strings generally do not vary from one system running svr4 to
506 another, but if a given system (e.g. m88k running svr) needs to use
507 different pseudo-op names for these, they may be overridden in the
508 file which includes this one. */
510 #define TYPE_ASM_OP ".type"
511 #define SIZE_ASM_OP ".size"
513 /* The following macro defines the format used to output the second
514 operand of the .type assembler directive. Different svr4 assemblers
515 expect various different forms for this operand. The one given here
516 is just a default. You may need to override it in your machine-
517 specific tm.h file (depending upon the particulars of your assembler). */
519 #define TYPE_OPERAND_FMT "@%s"
521 /* Write the extra assembler code needed to declare a function's result.
522 Most svr4 assemblers don't require any special declaration of the
523 result value, but there are exceptions. */
525 #ifndef ASM_DECLARE_RESULT
526 #define ASM_DECLARE_RESULT(FILE, RESULT)
529 /* These macros generate the special .type and .size directives which
530 are used to set the corresponding fields of the linker symbol table
531 entries in an ELF object file under SVR4. These macros also output
532 the starting labels for the relevant functions/objects. */
534 /* Write the extra assembler code needed to declare a function properly.
535 Some svr4 assemblers need to also have something extra said about the
536 function's return value. We allow for that here. */
538 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
540 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
541 assemble_name (FILE, NAME); \
543 fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
545 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
546 ASM_OUTPUT_LABEL(FILE, NAME); \
549 /* Write the extra assembler code needed to declare an object properly. */
551 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
553 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
554 assemble_name (FILE, NAME); \
556 fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
558 if (!flag_inhibit_size_directive) \
560 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
561 assemble_name (FILE, NAME); \
562 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (decl))); \
564 ASM_OUTPUT_LABEL(FILE, NAME); \
567 /* This is how to declare the size of a function. */
569 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
571 if (!flag_inhibit_size_directive) \
574 static int labelno; \
576 ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
577 ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
578 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
579 assemble_name (FILE, (FNAME)); \
580 fprintf (FILE, ","); \
581 assemble_name (FILE, label); \
582 fprintf (FILE, "-"); \
583 ASM_OUTPUT_LABELREF (FILE, (FNAME)); \
588 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
589 ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
590 corresponds to a particular byte value [0..255]. For any
591 given byte value, if the value in the corresponding table
592 position is zero, the given character can be output directly.
593 If the table value is 1, the byte must be output as a \ooo
594 octal escape. If the tables value is anything else, then the
595 byte value should be output as a \ followed by the value
596 in the table. Note that we can use standard UN*X escape
597 sequences for many control characters, but we don't use
598 \a to represent BEL because some svr4 assemblers (e.g. on
599 the i386) don't know about that. */
602 "\1\1\1\1\1\1\1\1btnvfr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
603 \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\
604 \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\
605 \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\
606 \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\
607 \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\
608 \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\
609 \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"
611 /* Some svr4 assemblers have a limit on the number of characters which
612 can appear in the operand of a .string directive. If your assembler
613 has such a limitation, you should define STRING_LIMIT to reflect that
614 limit. Note that at least some svr4 assemblers have a limit on the
615 actual number of bytes in the double-quoted string, and that they
616 count each character in an escape sequence as one byte. Thus, an
617 escape sequence like \377 would count as four bytes.
619 If your target assembler doesn't support the .string directive, you
620 should define this to zero.
623 #define STRING_LIMIT ((unsigned) 256)
625 #define STRING_ASM_OP ".string"
627 /* The routine used to output NUL terminated strings. We use a special
628 version of this for most svr4 targets because doing so makes the
629 generated assembly code more compact (and thus faster to assemble)
630 as well as more readable, especially for targets like the i386
631 (where the only alternative is to output character sequences as
632 comma separated lists of numbers). */
634 #define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \
637 register unsigned char *_limited_str = (unsigned char *) (STR); \
638 register unsigned ch; \
639 fprintf ((FILE), "\t%s\t\"", STRING_ASM_OP); \
640 for (; ch = *_limited_str; _limited_str++) \
642 register int escape; \
643 switch (escape = ESCAPES[ch]) \
649 fprintf ((FILE), "\\%03o", ch); \
652 putc ('\\', (FILE)); \
653 putc (escape, (FILE)); \
657 fprintf ((FILE), "\"\n"); \
661 /* The routine used to output sequences of byte values. We use a special
662 version of this for most svr4 targets because doing so makes the
663 generated assembly code more compact (and thus faster to assemble)
664 as well as more readable. Note that if we find subparts of the
665 character sequence which end with NUL (and which are shorter than
666 STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */
668 #undef ASM_OUTPUT_ASCII
669 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
672 register unsigned char *_ascii_bytes = (unsigned char *) (STR); \
673 register unsigned char *limit = _ascii_bytes + (LENGTH); \
674 register unsigned bytes_in_chunk = 0; \
675 for (; _ascii_bytes < limit; _ascii_bytes++) \
677 register unsigned char *p; \
678 if (bytes_in_chunk >= 60) \
680 fprintf ((FILE), "\"\n"); \
681 bytes_in_chunk = 0; \
683 for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \
685 if (p < limit && (p - _ascii_bytes) <= STRING_LIMIT) \
687 if (bytes_in_chunk > 0) \
689 fprintf ((FILE), "\"\n"); \
690 bytes_in_chunk = 0; \
692 ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \
697 register int escape; \
698 register unsigned ch; \
699 if (bytes_in_chunk == 0) \
700 fprintf ((FILE), "\t%s\t\"", ASCII_DATA_ASM_OP); \
701 switch (escape = ESCAPES[ch = *_ascii_bytes]) \
708 fprintf ((FILE), "\\%03o", ch); \
709 bytes_in_chunk += 4; \
712 putc ('\\', (FILE)); \
713 putc (escape, (FILE)); \
714 bytes_in_chunk += 2; \
719 if (bytes_in_chunk > 0) \
720 fprintf ((FILE), "\"\n"); \