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, 1994 Free Software Foundation, Inc.
4 Contributed by Ron Guilmette (rfg@netcom.com).
6 This file is part of GNU CC.
8 GNU CC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GNU CC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU CC; see the file COPYING. If not, write to
20 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
22 To use this file, make up a file with a name like:
26 where ????? is replaced by the name of the basic hardware that you
27 are targeting for. Then, in the file ?????svr4.h, put something
33 followed by any really system-specific defines (or overrides of
34 defines) which you find that you need. For example, CPP_PREDEFINES
35 is defined here with only the defined -Dunix and -DSVR4. You should
36 probably override that in your target-specific ?????svr4.h file
37 with a set of defines that includes these, but also contains an
38 appropriate define for the type of hardware that you are targeting.
41 /* Define a symbol indicating that we are using svr4.h. */
44 /* For the sake of libgcc2.c, indicate target supports atexit. */
47 /* Cpp, assembler, linker, library, and startfile spec's. */
49 /* This defines which switch letters take arguments. On svr4, most of
50 the normal cases (defined in gcc.c) apply, and we also have -h* and
51 -z* options (for the linker). Note however that there is no such
52 thing as a -T option for svr4. */
54 #define SWITCH_TAKES_ARG(CHAR) \
67 /* This defines which multi-letter switches take arguments. On svr4,
68 there are no such switches except those implemented by GCC itself. */
70 #define WORD_SWITCH_TAKES_ARG(STR) \
71 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
72 && strcmp (STR, "Tdata") && strcmp (STR, "Ttext") \
73 && strcmp (STR, "Tbss"))
75 /* You should redefine CPP_PREDEFINES in any file which includes this one.
76 The definition should be appropriate for the type of target system
77 involved, and it should include any -A (assertion) options which are
78 appropriate for the given target system. */
81 /* Provide an ASM_SPEC appropriate for svr4. Here we try to support as
82 many of the specialized svr4 assembler options as seems reasonable,
83 given that there are certain options which we can't (or shouldn't)
84 support directly due to the fact that they conflict with other options
85 for other svr4 tools (e.g. ld) or with other options for GCC itself.
86 For example, we don't support the -o (output file) or -R (remove
87 input file) options because GCC already handles these things. We
88 also don't support the -m (run m4) option for the assembler because
89 that conflicts with the -m (produce load map) option of the svr4
90 linker. We do however allow passing arbitrary options to the svr4
91 assembler via the -Wa, option.
93 Note that gcc doesn't allow a space to follow -Y in a -Ym,* or -Yd,*
99 "%{V} %{v:%{!V:-V}} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
101 /* svr4 assemblers need the `-' (indicating input from stdin) to come after
102 the -o option (and its argument) for some reason. If we try to put it
103 before the -o option, the assembler will try to read the file named as
104 the output file in the -o option as an input file (after it has already
105 written some stuff to it) and the binary stuff contained therein will
106 cause totally confuse the assembler, resulting in many spurious error
109 #undef ASM_FINAL_SPEC
110 #define ASM_FINAL_SPEC "%{pipe:-}"
112 /* Under svr4, the normal location of the `ld' and `as' programs is the
113 /usr/ccs/bin directory. */
115 #undef MD_EXEC_PREFIX
116 #define MD_EXEC_PREFIX "/usr/ccs/bin/"
118 /* Under svr4, the normal location of the various *crt*.o files is the
119 /usr/ccs/lib directory. */
121 #undef MD_STARTFILE_PREFIX
122 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
124 /* Provide a LIB_SPEC appropriate for svr4. Here we tack on the default
125 standard C library (unless we are building a shared library) followed by
126 our own magical crtend.o file (see crtstuff.c) which provides part of
127 the support for getting C++ file-scope static object constructed before
128 entering `main', followed by the normal svr3/svr4 "finalizer" file,
129 which is either `gcrtn.o' or `crtn.o'. */
133 "%{!shared:%{!symbolic:-lc}} \
135 %{!shared:%{!symbolic:%{pg:gcrtn.o}%{!pg:crtn.o%s}}}"
137 /* Provide a LINK_SPEC appropriate for svr4. Here we provide support
138 for the special GCC options -static, -shared, and -symbolic which
139 allow us to link things in one of these three modes by applying the
140 appropriate combinations of options at link-time. We also provide
141 support here for as many of the other svr4 linker options as seems
142 reasonable, given that some of them conflict with options for other
143 svr4 tools (e.g. the assembler). In particular, we do support the
144 -h*, -z*, -V, -b, -t, -Qy, -Qn, and -YP* options here, and the -e*,
145 -l*, -o*, -r, -s, -u*, and -L* options are directly supported
146 by gcc.c itself. We don't directly support the -m (generate load
147 map) option because that conflicts with the -m (run m4) option of
148 the svr4 assembler. We also don't directly support the svr4 linker's
149 -I* or -M* options because these conflict with existing GCC options.
150 We do however allow passing arbitrary options to the svr4 linker
151 via the -Wl, option. We don't support the svr4 linker's -a option
152 at all because it is totally useless and because it conflicts with
155 Note that gcc doesn't allow a space to follow -Y in a -YP,* option.
157 When the -G link option is used (-shared and -symbolic) a final link is
161 #define LINK_SPEC "%{h*} %{V} %{v:%{!V:-V}} \
163 %{static:-dn -Bstatic} \
165 %{symbolic:-Bsymbolic -G -dy} \
168 %{!YP,*:%{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
169 %{!p:-Y P,/usr/ccs/lib:/usr/lib}} \
172 /* Gcc automatically adds in one of the files /usr/ccs/lib/values-Xc.o,
173 /usr/ccs/lib/values-Xa.o, or /usr/ccs/lib/values-Xt.o for each final
174 link step (depending upon the other gcc options selected, such as
175 -traditional and -ansi). These files each contain one (initialized)
176 copy of a special variable called `_lib_version'. Each one of these
177 files has `_lib_version' initialized to a different (enum) value.
178 The SVR4 library routines query the value of `_lib_version' at run
179 to decide how they should behave. Specifically, they decide (based
180 upon the value of `_lib_version') if they will act in a strictly ANSI
181 conforming manner or not.
184 #undef STARTFILE_SPEC
185 #define STARTFILE_SPEC "%{!shared: \
187 %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} \
188 %{pg:gcrti.o%s}%{!pg:crti.o%s} \
189 %{ansi:values-Xc.o%s} \
191 %{traditional:values-Xt.o%s} \
192 %{!traditional:values-Xa.o%s}}}} crtbegin.o%s"
194 /* Attach a special .ident directive to the end of the file to identify
195 the version of GCC which compiled this code. The format of the
196 .ident string is patterned after the ones produced by native svr4
199 #define IDENT_ASM_OP ".ident"
201 #define ASM_FILE_END(FILE) \
203 fprintf ((FILE), "\t%s\t\"GCC: (GNU) %s\"\n", \
204 IDENT_ASM_OP, version_string); \
207 /* Allow #sccs in preprocessor. */
209 #define SCCS_DIRECTIVE
211 /* Output #ident as a .ident. */
213 #define ASM_OUTPUT_IDENT(FILE, NAME) \
214 fprintf (FILE, "\t%s\t\"%s\"\n", IDENT_ASM_OP, NAME);
216 /* Use periods rather than dollar signs in special g++ assembler names. */
218 #define NO_DOLLAR_IN_LABEL
220 /* Writing `int' for a bitfield forces int alignment for the structure. */
222 #define PCC_BITFIELD_TYPE_MATTERS 1
224 /* Implicit library calls should use memcpy, not bcopy, etc. */
226 #define TARGET_MEM_FUNCTIONS
228 /* Handle #pragma weak and #pragma pack. */
230 #define HANDLE_SYSV_PRAGMA
232 /* System V Release 4 uses DWARF debugging info. */
234 #define DWARF_DEBUGGING_INFO
236 /* The numbers used to denote specific machine registers in the System V
237 Release 4 DWARF debugging information are quite likely to be totally
238 different from the numbers used in BSD stabs debugging information
239 for the same kind of target machine. Thus, we undefine the macro
240 DBX_REGISTER_NUMBER here as an extra inducement to get people to
241 provide proper machine-specific definitions of DBX_REGISTER_NUMBER
242 (which is also used to provide DWARF registers numbers in dwarfout.c)
243 in their tm.h files which include this file. */
245 #undef DBX_REGISTER_NUMBER
247 /* gas on SVR4 supports the use of .stabs. Permit -gstabs to be used
248 in general, although it will only work when using gas. */
250 #define DBX_DEBUGGING_INFO
252 /* Use DWARF debugging info by default. */
254 #ifndef PREFERRED_DEBUGGING_TYPE
255 #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
258 /* Make LBRAC and RBRAC addresses relative to the start of the
259 function. The native Solaris stabs debugging format works this
260 way, gdb expects it, and it reduces the number of relocation
263 #define DBX_BLOCKS_FUNCTION_RELATIVE 1
265 /* When using stabs, gcc2_compiled must be a stabs entry, not an
266 ordinary symbol, or gdb won't see it. Furthermore, since gdb reads
267 the input piecemeal, starting with each N_SO, it's a lot easier if
268 the gcc2 flag symbol is *after* the N_SO rather than before it. So
269 we emit an N_OPT stab there. */
271 #define ASM_IDENTIFY_GCC(FILE) \
274 if (write_symbols != DBX_DEBUG) \
275 fputs ("gcc2_compiled.:\n", FILE); \
279 #define ASM_IDENTIFY_GCC_AFTER_SOURCE(FILE) \
282 if (write_symbols == DBX_DEBUG) \
283 fputs ("\t.stabs\t\"gcc2_compiled.\", 0x3c, 0, 0, 0\n", FILE); \
287 /* Like block addresses, stabs line numbers are relative to the
290 #define ASM_OUTPUT_SOURCE_LINE(file, line) \
293 static int sym_lineno = 1; \
294 fprintf (file, ".stabn 68,0,%d,.LM%d-%s\n.LM%d:\n", \
296 XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0), \
302 /* In order for relative line numbers to work, we must output the
303 stabs entry for the function name first. */
305 #define DBX_FUNCTION_FIRST
307 /* Define the actual types of some ANSI-mandated types. (These
308 definitions should work for most SVR4 systems). */
311 #define SIZE_TYPE "unsigned int"
314 #define PTRDIFF_TYPE "int"
317 #define WCHAR_TYPE "long int"
319 #undef WCHAR_TYPE_SIZE
320 #define WCHAR_TYPE_SIZE BITS_PER_WORD
322 /* This causes trouble, because it requires the host machine
323 to support ANSI C. */
324 /* #define MULTIBYTE_CHARS */
327 #define ASM_BYTE_OP ".byte"
330 #define SET_ASM_OP ".set"
332 /* This is how to begin an assembly language file. Most svr4 assemblers want
333 at least a .file directive to come first, and some want to see a .version
334 directive come right after that. Here we just establish a default
335 which generates only the .file directive. If you need a .version
336 directive for any specific target, you should override this definition
337 in the target-specific file which includes this one. */
339 #undef ASM_FILE_START
340 #define ASM_FILE_START(FILE) \
341 output_file_directive ((FILE), main_input_filename)
343 /* This is how to allocate empty space in some section. The .zero
344 pseudo-op is used for this on most svr4 assemblers. */
346 #define SKIP_ASM_OP ".zero"
348 #undef ASM_OUTPUT_SKIP
349 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
350 fprintf (FILE, "\t%s\t%u\n", SKIP_ASM_OP, (SIZE))
352 /* This is how to output a reference to a user-level label named NAME.
353 `assemble_name' uses this.
355 For System V Release 4 the convention is *not* to prepend a leading
356 underscore onto user-level symbol names. */
358 #undef ASM_OUTPUT_LABELREF
359 #define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "%s", NAME)
361 /* This is how to output an internal numbered label where
362 PREFIX is the class of label and NUM is the number within the class.
364 For most svr4 systems, the convention is that any symbol which begins
365 with a period is not put into the linker symbol table by the assembler. */
367 #undef ASM_OUTPUT_INTERNAL_LABEL
368 #define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \
370 fprintf (FILE, ".%s%d:\n", PREFIX, NUM); \
373 /* This is how to store into the string LABEL
374 the symbol_ref name of an internal numbered label where
375 PREFIX is the class of label and NUM is the number within the class.
376 This is suitable for output with `assemble_name'.
378 For most svr4 systems, the convention is that any symbol which begins
379 with a period is not put into the linker symbol table by the assembler. */
381 #undef ASM_GENERATE_INTERNAL_LABEL
382 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
384 sprintf (LABEL, "*.%s%d", PREFIX, NUM); \
387 /* Output the label which precedes a jumptable. Note that for all svr4
388 systems where we actually generate jumptables (which is to say every
389 svr4 target except i386, where we use casesi instead) we put the jump-
390 tables into the .rodata section and since other stuff could have been
391 put into the .rodata section prior to any given jumptable, we have to
392 make sure that the location counter for the .rodata section gets pro-
393 perly re-aligned prior to the actual beginning of the jump table. */
395 #define ALIGN_ASM_OP ".align"
397 #ifndef ASM_OUTPUT_BEFORE_CASE_LABEL
398 #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
399 ASM_OUTPUT_ALIGN ((FILE), 2);
402 #undef ASM_OUTPUT_CASE_LABEL
403 #define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,JUMPTABLE) \
405 ASM_OUTPUT_BEFORE_CASE_LABEL (FILE, PREFIX, NUM, JUMPTABLE) \
406 ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \
409 /* The standard SVR4 assembler seems to require that certain builtin
410 library routines (e.g. .udiv) be explicitly declared as .globl
411 in each assembly file where they are referenced. */
413 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
414 ASM_GLOBALIZE_LABEL (FILE, XSTR (FUN, 0))
416 /* This says how to output assembler code to declare an
417 uninitialized external linkage data object. Under SVR4,
418 the linker seems to want the alignment of data objects
419 to depend on their types. We do exactly that here. */
421 #define COMMON_ASM_OP ".comm"
423 #undef ASM_OUTPUT_ALIGNED_COMMON
424 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
426 fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \
427 assemble_name ((FILE), (NAME)); \
428 fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
431 /* This says how to output assembler code to declare an
432 uninitialized internal linkage data object. Under SVR4,
433 the linker seems to want the alignment of data objects
434 to depend on their types. We do exactly that here. */
436 #define LOCAL_ASM_OP ".local"
438 #undef ASM_OUTPUT_ALIGNED_LOCAL
439 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
441 fprintf ((FILE), "\t%s\t", LOCAL_ASM_OP); \
442 assemble_name ((FILE), (NAME)); \
443 fprintf ((FILE), "\n"); \
444 ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
447 /* This is the pseudo-op used to generate a 32-bit word of data with a
448 specific value in some section. This is the same for all known svr4
451 #define INT_ASM_OP ".long"
453 /* This is the pseudo-op used to generate a contiguous sequence of byte
454 values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
455 AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */
457 #undef ASCII_DATA_ASM_OP
458 #define ASCII_DATA_ASM_OP ".ascii"
460 /* Support const sections and the ctors and dtors sections for g++.
461 Note that there appears to be two different ways to support const
462 sections at the moment. You can either #define the symbol
463 READONLY_DATA_SECTION (giving it some code which switches to the
464 readonly data section) or else you can #define the symbols
465 EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
466 SELECT_RTX_SECTION. We do both here just to be on the safe side. */
468 #define USE_CONST_SECTION 1
470 #define CONST_SECTION_ASM_OP ".section\t.rodata"
471 #define CTORS_SECTION_ASM_OP ".section\t.ctors,\"a\",@progbits"
472 #define DTORS_SECTION_ASM_OP ".section\t.dtors,\"a\",@progbits"
474 /* On svr4, we *do* have support for the .init section, and we can put
475 stuff in there to be executed before `main'. We let crtstuff.c and
476 other files know this by defining the following symbol. The definition
477 says how to change sections to the .init section. This is the same
478 for all know svr4 assemblers. */
480 #define INIT_SECTION_ASM_OP ".section\t.init"
482 /* A default list of other sections which we might be "in" at any given
483 time. For targets that use additional sections (e.g. .tdesc) you
484 should override this definition in the target-specific file which
485 includes this file. */
487 #undef EXTRA_SECTIONS
488 #define EXTRA_SECTIONS in_const, in_ctors, in_dtors
490 /* A default list of extra section function definitions. For targets
491 that use additional sections (e.g. .tdesc) you should override this
492 definition in the target-specific file which includes this file. */
494 #undef EXTRA_SECTION_FUNCTIONS
495 #define EXTRA_SECTION_FUNCTIONS \
496 CONST_SECTION_FUNCTION \
497 CTORS_SECTION_FUNCTION \
498 DTORS_SECTION_FUNCTION
500 #define READONLY_DATA_SECTION() const_section ()
502 extern void text_section ();
504 #define CONST_SECTION_FUNCTION \
508 if (!USE_CONST_SECTION) \
510 else if (in_section != in_const) \
512 fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
513 in_section = in_const; \
517 #define CTORS_SECTION_FUNCTION \
521 if (in_section != in_ctors) \
523 fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
524 in_section = in_ctors; \
528 #define DTORS_SECTION_FUNCTION \
532 if (in_section != in_dtors) \
534 fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
535 in_section = in_dtors; \
539 /* Switch into a generic section.
540 This is currently only used to support section attributes. */
542 #define ASM_OUTPUT_SECTION(FILE, NAME) \
543 fprintf (FILE, ".section\t%s,\"a\",@progbits\n", NAME)
545 /* A C statement (sans semicolon) to output an element in the table of
546 global constructors. */
547 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
550 fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
551 assemble_name (FILE, NAME); \
552 fprintf (FILE, "\n"); \
555 /* A C statement (sans semicolon) to output an element in the table of
556 global destructors. */
557 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
560 fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
561 assemble_name (FILE, NAME); \
562 fprintf (FILE, "\n"); \
565 /* A C statement or statements to switch to the appropriate
566 section for output of DECL. DECL is either a `VAR_DECL' node
567 or a constant of some sort. RELOC indicates whether forming
568 the initial value of DECL requires link-time relocations. */
570 #define SELECT_SECTION(DECL,RELOC) \
572 if (TREE_CODE (DECL) == STRING_CST) \
574 if (! flag_writable_strings) \
579 else if (TREE_CODE (DECL) == VAR_DECL) \
581 if ((flag_pic && RELOC) \
582 || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
583 || !DECL_INITIAL (DECL) \
584 || (DECL_INITIAL (DECL) != error_mark_node \
585 && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
594 /* A C statement or statements to switch to the appropriate
595 section for output of RTX in mode MODE. RTX is some kind
596 of constant in RTL. The argument MODE is redundant except
597 in the case of a `const_int' rtx. Currently, these always
598 go into the const section. */
600 #undef SELECT_RTX_SECTION
601 #define SELECT_RTX_SECTION(MODE,RTX) const_section()
603 /* Define the strings used for the special svr4 .type and .size directives.
604 These strings generally do not vary from one system running svr4 to
605 another, but if a given system (e.g. m88k running svr) needs to use
606 different pseudo-op names for these, they may be overridden in the
607 file which includes this one. */
609 #define TYPE_ASM_OP ".type"
610 #define SIZE_ASM_OP ".size"
611 #define WEAK_ASM_OP ".weak"
613 /* The following macro defines the format used to output the second
614 operand of the .type assembler directive. Different svr4 assemblers
615 expect various different forms for this operand. The one given here
616 is just a default. You may need to override it in your machine-
617 specific tm.h file (depending upon the particulars of your assembler). */
619 #define TYPE_OPERAND_FMT "@%s"
621 /* Write the extra assembler code needed to declare a function's result.
622 Most svr4 assemblers don't require any special declaration of the
623 result value, but there are exceptions. */
625 #ifndef ASM_DECLARE_RESULT
626 #define ASM_DECLARE_RESULT(FILE, RESULT)
629 /* These macros generate the special .type and .size directives which
630 are used to set the corresponding fields of the linker symbol table
631 entries in an ELF object file under SVR4. These macros also output
632 the starting labels for the relevant functions/objects. */
634 /* Write the extra assembler code needed to declare a function properly.
635 Some svr4 assemblers need to also have something extra said about the
636 function's return value. We allow for that here. */
638 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
640 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
641 assemble_name (FILE, NAME); \
643 fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
645 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
646 ASM_OUTPUT_LABEL(FILE, NAME); \
649 /* Write the extra assembler code needed to declare an object properly. */
651 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
653 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
654 assemble_name (FILE, NAME); \
656 fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
658 size_directive_output = 0; \
659 if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
661 size_directive_output = 1; \
662 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
663 assemble_name (FILE, NAME); \
664 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
666 ASM_OUTPUT_LABEL(FILE, NAME); \
669 /* Output the size directive for a decl in rest_of_decl_compilation
670 in the case where we did not do so before the initializer.
671 Once we find the error_mark_node, we know that the value of
672 size_directive_output was set
673 by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
675 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
677 char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
678 if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
679 && ! AT_END && TOP_LEVEL \
680 && DECL_INITIAL (DECL) == error_mark_node \
681 && !size_directive_output) \
683 size_directive_output = 1; \
684 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
685 assemble_name (FILE, name); \
686 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
690 /* This is how to declare the size of a function. */
692 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
694 if (!flag_inhibit_size_directive) \
697 static int labelno; \
699 ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
700 ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
701 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
702 assemble_name (FILE, (FNAME)); \
703 fprintf (FILE, ","); \
704 assemble_name (FILE, label); \
705 fprintf (FILE, "-"); \
706 assemble_name (FILE, (FNAME)); \
711 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
712 ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
713 corresponds to a particular byte value [0..255]. For any
714 given byte value, if the value in the corresponding table
715 position is zero, the given character can be output directly.
716 If the table value is 1, the byte must be output as a \ooo
717 octal escape. If the tables value is anything else, then the
718 byte value should be output as a \ followed by the value
719 in the table. Note that we can use standard UN*X escape
720 sequences for many control characters, but we don't use
721 \a to represent BEL because some svr4 assemblers (e.g. on
722 the i386) don't know about that. */
725 "\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\
726 \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\
727 \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\
728 \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\
729 \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\
730 \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\
731 \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\
732 \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"
734 /* Some svr4 assemblers have a limit on the number of characters which
735 can appear in the operand of a .string directive. If your assembler
736 has such a limitation, you should define STRING_LIMIT to reflect that
737 limit. Note that at least some svr4 assemblers have a limit on the
738 actual number of bytes in the double-quoted string, and that they
739 count each character in an escape sequence as one byte. Thus, an
740 escape sequence like \377 would count as four bytes.
742 If your target assembler doesn't support the .string directive, you
743 should define this to zero.
746 #define STRING_LIMIT ((unsigned) 256)
748 #define STRING_ASM_OP ".string"
750 /* The routine used to output NUL terminated strings. We use a special
751 version of this for most svr4 targets because doing so makes the
752 generated assembly code more compact (and thus faster to assemble)
753 as well as more readable, especially for targets like the i386
754 (where the only alternative is to output character sequences as
755 comma separated lists of numbers). */
757 #define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \
760 register unsigned char *_limited_str = (unsigned char *) (STR); \
761 register unsigned ch; \
762 fprintf ((FILE), "\t%s\t\"", STRING_ASM_OP); \
763 for (; ch = *_limited_str; _limited_str++) \
765 register int escape; \
766 switch (escape = ESCAPES[ch]) \
772 fprintf ((FILE), "\\%03o", ch); \
775 putc ('\\', (FILE)); \
776 putc (escape, (FILE)); \
780 fprintf ((FILE), "\"\n"); \
784 /* The routine used to output sequences of byte values. We use a special
785 version of this for most svr4 targets because doing so makes the
786 generated assembly code more compact (and thus faster to assemble)
787 as well as more readable. Note that if we find subparts of the
788 character sequence which end with NUL (and which are shorter than
789 STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */
791 #undef ASM_OUTPUT_ASCII
792 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
795 register unsigned char *_ascii_bytes = (unsigned char *) (STR); \
796 register unsigned char *limit = _ascii_bytes + (LENGTH); \
797 register unsigned bytes_in_chunk = 0; \
798 for (; _ascii_bytes < limit; _ascii_bytes++) \
800 register unsigned char *p; \
801 if (bytes_in_chunk >= 60) \
803 fprintf ((FILE), "\"\n"); \
804 bytes_in_chunk = 0; \
806 for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \
808 if (p < limit && (p - _ascii_bytes) <= STRING_LIMIT) \
810 if (bytes_in_chunk > 0) \
812 fprintf ((FILE), "\"\n"); \
813 bytes_in_chunk = 0; \
815 ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \
820 register int escape; \
821 register unsigned ch; \
822 if (bytes_in_chunk == 0) \
823 fprintf ((FILE), "\t%s\t\"", ASCII_DATA_ASM_OP); \
824 switch (escape = ESCAPES[ch = *_ascii_bytes]) \
831 fprintf ((FILE), "\\%03o", ch); \
832 bytes_in_chunk += 4; \
835 putc ('\\', (FILE)); \
836 putc (escape, (FILE)); \
837 bytes_in_chunk += 2; \
842 if (bytes_in_chunk > 0) \
843 fprintf ((FILE), "\"\n"); \