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 #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
256 /* Make LBRAC and RBRAC addresses relative to the start of the
257 function. The native Solaris stabs debugging format works this
258 way, gdb expects it, and it reduces the number of relocation
261 #define DBX_BLOCKS_FUNCTION_RELATIVE 1
263 /* When using stabs, gcc2_compiled must be a stabs entry, not an
264 ordinary symbol, or gdb won't see it. Furthermore, since gdb reads
265 the input piecemeal, starting with each N_SO, it's a lot easier if
266 the gcc2 flag symbol is *after* the N_SO rather than before it. So
267 we emit an N_OPT stab there. */
269 #define ASM_IDENTIFY_GCC(FILE) \
272 if (write_symbols != DBX_DEBUG) \
273 fputs ("gcc2_compiled.:\n", FILE); \
277 #define ASM_IDENTIFY_GCC_AFTER_SOURCE(FILE) \
280 if (write_symbols == DBX_DEBUG) \
281 fputs ("\t.stabs\t\"gcc2_compiled.\", 0x3c, 0, 0, 0\n", FILE); \
285 /* Like block addresses, stabs line numbers are relative to the
288 #define ASM_OUTPUT_SOURCE_LINE(file, line) \
291 static int sym_lineno = 1; \
292 fprintf (file, ".stabn 68,0,%d,.LM%d-%s\n.LM%d:\n", \
294 XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0), \
300 /* In order for relative line numbers to work, we must output the
301 stabs entry for the function name first. */
303 #define DBX_FUNCTION_FIRST
305 /* Define the actual types of some ANSI-mandated types. (These
306 definitions should work for most SVR4 systems). */
309 #define SIZE_TYPE "unsigned int"
312 #define PTRDIFF_TYPE "int"
315 #define WCHAR_TYPE "long int"
317 #undef WCHAR_TYPE_SIZE
318 #define WCHAR_TYPE_SIZE BITS_PER_WORD
320 /* This causes trouble, because it requires the host machine
321 to support ANSI C. */
322 /* #define MULTIBYTE_CHARS */
325 #define ASM_BYTE_OP ".byte"
328 #define SET_ASM_OP ".set"
330 /* This is how to begin an assembly language file. Most svr4 assemblers want
331 at least a .file directive to come first, and some want to see a .version
332 directive come right after that. Here we just establish a default
333 which generates only the .file directive. If you need a .version
334 directive for any specific target, you should override this definition
335 in the target-specific file which includes this one. */
337 #undef ASM_FILE_START
338 #define ASM_FILE_START(FILE) \
339 output_file_directive ((FILE), main_input_filename)
341 /* This is how to allocate empty space in some section. The .zero
342 pseudo-op is used for this on most svr4 assemblers. */
344 #define SKIP_ASM_OP ".zero"
346 #undef ASM_OUTPUT_SKIP
347 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
348 fprintf (FILE, "\t%s\t%u\n", SKIP_ASM_OP, (SIZE))
350 /* This is how to output a reference to a user-level label named NAME.
351 `assemble_name' uses this.
353 For System V Release 4 the convention is *not* to prepend a leading
354 underscore onto user-level symbol names. */
356 #undef ASM_OUTPUT_LABELREF
357 #define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "%s", NAME)
359 /* This is how to output an internal numbered label where
360 PREFIX is the class of label and NUM is the number within the class.
362 For most svr4 systems, the convention is that any symbol which begins
363 with a period is not put into the linker symbol table by the assembler. */
365 #undef ASM_OUTPUT_INTERNAL_LABEL
366 #define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \
368 fprintf (FILE, ".%s%d:\n", PREFIX, NUM); \
371 /* This is how to store into the string LABEL
372 the symbol_ref name of an internal numbered label where
373 PREFIX is the class of label and NUM is the number within the class.
374 This is suitable for output with `assemble_name'.
376 For most svr4 systems, the convention is that any symbol which begins
377 with a period is not put into the linker symbol table by the assembler. */
379 #undef ASM_GENERATE_INTERNAL_LABEL
380 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
382 sprintf (LABEL, "*.%s%d", PREFIX, NUM); \
385 /* Output the label which precedes a jumptable. Note that for all svr4
386 systems where we actually generate jumptables (which is to say every
387 svr4 target except i386, where we use casesi instead) we put the jump-
388 tables into the .rodata section and since other stuff could have been
389 put into the .rodata section prior to any given jumptable, we have to
390 make sure that the location counter for the .rodata section gets pro-
391 perly re-aligned prior to the actual beginning of the jump table. */
393 #define ALIGN_ASM_OP ".align"
395 #ifndef ASM_OUTPUT_BEFORE_CASE_LABEL
396 #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
397 ASM_OUTPUT_ALIGN ((FILE), 2);
400 #undef ASM_OUTPUT_CASE_LABEL
401 #define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,JUMPTABLE) \
403 ASM_OUTPUT_BEFORE_CASE_LABEL (FILE, PREFIX, NUM, JUMPTABLE) \
404 ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \
407 /* The standard SVR4 assembler seems to require that certain builtin
408 library routines (e.g. .udiv) be explicitly declared as .globl
409 in each assembly file where they are referenced. */
411 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
412 ASM_GLOBALIZE_LABEL (FILE, XSTR (FUN, 0))
414 /* This says how to output assembler code to declare an
415 uninitialized external linkage data object. Under SVR4,
416 the linker seems to want the alignment of data objects
417 to depend on their types. We do exactly that here. */
419 #define COMMON_ASM_OP ".comm"
421 #undef ASM_OUTPUT_ALIGNED_COMMON
422 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
424 fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \
425 assemble_name ((FILE), (NAME)); \
426 fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
429 /* This says how to output assembler code to declare an
430 uninitialized internal linkage data object. Under SVR4,
431 the linker seems to want the alignment of data objects
432 to depend on their types. We do exactly that here. */
434 #define LOCAL_ASM_OP ".local"
436 #undef ASM_OUTPUT_ALIGNED_LOCAL
437 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
439 fprintf ((FILE), "\t%s\t", LOCAL_ASM_OP); \
440 assemble_name ((FILE), (NAME)); \
441 fprintf ((FILE), "\n"); \
442 ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
445 /* This is the pseudo-op used to generate a 32-bit word of data with a
446 specific value in some section. This is the same for all known svr4
449 #define INT_ASM_OP ".long"
451 /* This is the pseudo-op used to generate a contiguous sequence of byte
452 values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
453 AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */
455 #undef ASCII_DATA_ASM_OP
456 #define ASCII_DATA_ASM_OP ".ascii"
458 /* Support const sections and the ctors and dtors sections for g++.
459 Note that there appears to be two different ways to support const
460 sections at the moment. You can either #define the symbol
461 READONLY_DATA_SECTION (giving it some code which switches to the
462 readonly data section) or else you can #define the symbols
463 EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
464 SELECT_RTX_SECTION. We do both here just to be on the safe side. */
466 #define USE_CONST_SECTION 1
468 #define CONST_SECTION_ASM_OP ".section\t.rodata"
469 #define CTORS_SECTION_ASM_OP ".section\t.ctors,\"a\",@progbits"
470 #define DTORS_SECTION_ASM_OP ".section\t.dtors,\"a\",@progbits"
472 /* On svr4, we *do* have support for the .init section, and we can put
473 stuff in there to be executed before `main'. We let crtstuff.c and
474 other files know this by defining the following symbol. The definition
475 says how to change sections to the .init section. This is the same
476 for all know svr4 assemblers. */
478 #define INIT_SECTION_ASM_OP ".section\t.init"
480 /* A default list of other sections which we might be "in" at any given
481 time. For targets that use additional sections (e.g. .tdesc) you
482 should override this definition in the target-specific file which
483 includes this file. */
485 #undef EXTRA_SECTIONS
486 #define EXTRA_SECTIONS in_const, in_ctors, in_dtors
488 /* A default list of extra section function definitions. For targets
489 that use additional sections (e.g. .tdesc) you should override this
490 definition in the target-specific file which includes this file. */
492 #undef EXTRA_SECTION_FUNCTIONS
493 #define EXTRA_SECTION_FUNCTIONS \
494 CONST_SECTION_FUNCTION \
495 CTORS_SECTION_FUNCTION \
496 DTORS_SECTION_FUNCTION
498 #define READONLY_DATA_SECTION() const_section ()
500 extern void text_section ();
502 #define CONST_SECTION_FUNCTION \
506 if (!USE_CONST_SECTION) \
508 else if (in_section != in_const) \
510 fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
511 in_section = in_const; \
515 #define CTORS_SECTION_FUNCTION \
519 if (in_section != in_ctors) \
521 fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
522 in_section = in_ctors; \
526 #define DTORS_SECTION_FUNCTION \
530 if (in_section != in_dtors) \
532 fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
533 in_section = in_dtors; \
537 /* Switch into a generic section.
538 This is currently only used to support section attributes. */
540 #define ASM_OUTPUT_SECTION(FILE, NAME) \
541 fprintf (FILE, ".section\t%s,\"a\",@progbits\n", NAME)
543 /* A C statement (sans semicolon) to output an element in the table of
544 global constructors. */
545 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
548 fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
549 assemble_name (FILE, NAME); \
550 fprintf (FILE, "\n"); \
553 /* A C statement (sans semicolon) to output an element in the table of
554 global destructors. */
555 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
558 fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
559 assemble_name (FILE, NAME); \
560 fprintf (FILE, "\n"); \
563 /* A C statement or statements to switch to the appropriate
564 section for output of DECL. DECL is either a `VAR_DECL' node
565 or a constant of some sort. RELOC indicates whether forming
566 the initial value of DECL requires link-time relocations. */
568 #define SELECT_SECTION(DECL,RELOC) \
570 if (TREE_CODE (DECL) == STRING_CST) \
572 if (! flag_writable_strings) \
577 else if (TREE_CODE (DECL) == VAR_DECL) \
579 if ((flag_pic && RELOC) \
580 || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
581 || !DECL_INITIAL (DECL) \
582 || (DECL_INITIAL (DECL) != error_mark_node \
583 && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
592 /* A C statement or statements to switch to the appropriate
593 section for output of RTX in mode MODE. RTX is some kind
594 of constant in RTL. The argument MODE is redundant except
595 in the case of a `const_int' rtx. Currently, these always
596 go into the const section. */
598 #undef SELECT_RTX_SECTION
599 #define SELECT_RTX_SECTION(MODE,RTX) const_section()
601 /* Define the strings used for the special svr4 .type and .size directives.
602 These strings generally do not vary from one system running svr4 to
603 another, but if a given system (e.g. m88k running svr) needs to use
604 different pseudo-op names for these, they may be overridden in the
605 file which includes this one. */
607 #define TYPE_ASM_OP ".type"
608 #define SIZE_ASM_OP ".size"
609 #define WEAK_ASM_OP ".weak"
611 /* The following macro defines the format used to output the second
612 operand of the .type assembler directive. Different svr4 assemblers
613 expect various different forms for this operand. The one given here
614 is just a default. You may need to override it in your machine-
615 specific tm.h file (depending upon the particulars of your assembler). */
617 #define TYPE_OPERAND_FMT "@%s"
619 /* Write the extra assembler code needed to declare a function's result.
620 Most svr4 assemblers don't require any special declaration of the
621 result value, but there are exceptions. */
623 #ifndef ASM_DECLARE_RESULT
624 #define ASM_DECLARE_RESULT(FILE, RESULT)
627 /* These macros generate the special .type and .size directives which
628 are used to set the corresponding fields of the linker symbol table
629 entries in an ELF object file under SVR4. These macros also output
630 the starting labels for the relevant functions/objects. */
632 /* Write the extra assembler code needed to declare a function properly.
633 Some svr4 assemblers need to also have something extra said about the
634 function's return value. We allow for that here. */
636 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
638 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
639 assemble_name (FILE, NAME); \
641 fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
643 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
644 ASM_OUTPUT_LABEL(FILE, NAME); \
647 /* Write the extra assembler code needed to declare an object properly. */
649 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
651 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
652 assemble_name (FILE, NAME); \
654 fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
656 size_directive_output = 0; \
657 if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
659 size_directive_output = 1; \
660 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
661 assemble_name (FILE, NAME); \
662 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
664 ASM_OUTPUT_LABEL(FILE, NAME); \
667 /* Output the size directive for a decl in rest_of_decl_compilation
668 in the case where we did not do so before the initializer.
669 Once we find the error_mark_node, we know that the value of
670 size_directive_output was set
671 by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
673 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
675 char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
676 if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
677 && ! AT_END && TOP_LEVEL \
678 && DECL_INITIAL (DECL) == error_mark_node \
679 && !size_directive_output) \
681 size_directive_output = 1; \
682 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
683 assemble_name (FILE, name); \
684 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
688 /* This is how to declare the size of a function. */
690 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
692 if (!flag_inhibit_size_directive) \
695 static int labelno; \
697 ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
698 ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
699 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
700 assemble_name (FILE, (FNAME)); \
701 fprintf (FILE, ","); \
702 assemble_name (FILE, label); \
703 fprintf (FILE, "-"); \
704 assemble_name (FILE, (FNAME)); \
709 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
710 ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
711 corresponds to a particular byte value [0..255]. For any
712 given byte value, if the value in the corresponding table
713 position is zero, the given character can be output directly.
714 If the table value is 1, the byte must be output as a \ooo
715 octal escape. If the tables value is anything else, then the
716 byte value should be output as a \ followed by the value
717 in the table. Note that we can use standard UN*X escape
718 sequences for many control characters, but we don't use
719 \a to represent BEL because some svr4 assemblers (e.g. on
720 the i386) don't know about that. */
723 "\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\
724 \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\
725 \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\
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\1\
727 \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\
728 \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\
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"
732 /* Some svr4 assemblers have a limit on the number of characters which
733 can appear in the operand of a .string directive. If your assembler
734 has such a limitation, you should define STRING_LIMIT to reflect that
735 limit. Note that at least some svr4 assemblers have a limit on the
736 actual number of bytes in the double-quoted string, and that they
737 count each character in an escape sequence as one byte. Thus, an
738 escape sequence like \377 would count as four bytes.
740 If your target assembler doesn't support the .string directive, you
741 should define this to zero.
744 #define STRING_LIMIT ((unsigned) 256)
746 #define STRING_ASM_OP ".string"
748 /* The routine used to output NUL terminated strings. We use a special
749 version of this for most svr4 targets because doing so makes the
750 generated assembly code more compact (and thus faster to assemble)
751 as well as more readable, especially for targets like the i386
752 (where the only alternative is to output character sequences as
753 comma separated lists of numbers). */
755 #define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \
758 register unsigned char *_limited_str = (unsigned char *) (STR); \
759 register unsigned ch; \
760 fprintf ((FILE), "\t%s\t\"", STRING_ASM_OP); \
761 for (; ch = *_limited_str; _limited_str++) \
763 register int escape; \
764 switch (escape = ESCAPES[ch]) \
770 fprintf ((FILE), "\\%03o", ch); \
773 putc ('\\', (FILE)); \
774 putc (escape, (FILE)); \
778 fprintf ((FILE), "\"\n"); \
782 /* The routine used to output sequences of byte values. We use a special
783 version of this for most svr4 targets because doing so makes the
784 generated assembly code more compact (and thus faster to assemble)
785 as well as more readable. Note that if we find subparts of the
786 character sequence which end with NUL (and which are shorter than
787 STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */
789 #undef ASM_OUTPUT_ASCII
790 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
793 register unsigned char *_ascii_bytes = (unsigned char *) (STR); \
794 register unsigned char *limit = _ascii_bytes + (LENGTH); \
795 register unsigned bytes_in_chunk = 0; \
796 for (; _ascii_bytes < limit; _ascii_bytes++) \
798 register unsigned char *p; \
799 if (bytes_in_chunk >= 60) \
801 fprintf ((FILE), "\"\n"); \
802 bytes_in_chunk = 0; \
804 for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \
806 if (p < limit && (p - _ascii_bytes) <= STRING_LIMIT) \
808 if (bytes_in_chunk > 0) \
810 fprintf ((FILE), "\"\n"); \
811 bytes_in_chunk = 0; \
813 ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \
818 register int escape; \
819 register unsigned ch; \
820 if (bytes_in_chunk == 0) \
821 fprintf ((FILE), "\t%s\t\"", ASCII_DATA_ASM_OP); \
822 switch (escape = ESCAPES[ch = *_ascii_bytes]) \
829 fprintf ((FILE), "\\%03o", ch); \
830 bytes_in_chunk += 4; \
833 putc ('\\', (FILE)); \
834 putc (escape, (FILE)); \
835 bytes_in_chunk += 2; \
840 if (bytes_in_chunk > 0) \
841 fprintf ((FILE), "\"\n"); \