1 /* Operating system specific defines to be used when targeting GCC for some
2 generic System V Release 4 system.
3 Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
4 Contributed by Ron Guilmette (rfg@monkeys.com).
5 Renamed and changed to suit Dynix/ptx v4 and later.
6 Modified by Tim Wright (timw@sequent.com).
8 This file is part of GNU CC.
10 GNU CC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
15 GNU CC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GNU CC; see the file COPYING. If not, write to
22 the Free Software Foundation, 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA.
27 /* Define a symbol indicating that we are using svr4.h. */
30 /* Cpp, assembler, linker, library, and startfile spec's. */
32 /* This defines which switch letters take arguments. On svr4, most of
33 the normal cases (defined in gcc.c) apply, and we also have -h* and
34 -z* options (for the linker). Note however that there is no such
35 thing as a -T option for svr4. */
37 #define SWITCH_TAKES_ARG(CHAR) \
50 /* This defines which multi-letter switches take arguments. On svr4,
51 there are no such switches except those implemented by GCC itself. */
53 #define WORD_SWITCH_TAKES_ARG(STR) \
54 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
55 && strcmp (STR, "Tdata") && strcmp (STR, "Ttext") \
56 && strcmp (STR, "Tbss"))
58 /* You should redefine CPP_PREDEFINES in any file which includes this one.
59 The definition should be appropriate for the type of target system
60 involved, and it should include any -A (assertion) options which are
61 appropriate for the given target system. */
64 /* Provide an ASM_SPEC appropriate for svr4. Here we try to support as
65 many of the specialized svr4 assembler options as seems reasonable,
66 given that there are certain options which we can't (or shouldn't)
67 support directly due to the fact that they conflict with other options
68 for other svr4 tools (e.g. ld) or with other options for GCC itself.
69 For example, we don't support the -o (output file) or -R (remove
70 input file) options because GCC already handles these things. We
71 also don't support the -m (run m4) option for the assembler because
72 that conflicts with the -m (produce load map) option of the svr4
73 linker. We do however allow passing arbitrary options to the svr4
74 assembler via the -Wa, option.
76 Note that gcc doesn't allow a space to follow -Y in a -Ym,* or -Yd,*
82 "-no_0f_fix %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
84 /* svr4 assemblers need the `-' (indicating input from stdin) to come after
85 the -o option (and its argument) for some reason. If we try to put it
86 before the -o option, the assembler will try to read the file named as
87 the output file in the -o option as an input file (after it has already
88 written some stuff to it) and the binary stuff contained therein will
89 cause totally confuse the assembler, resulting in many spurious error
93 #define ASM_FINAL_SPEC "%{pipe:-}"
95 /* Provide a LIB_SPEC appropriate for svr4. Here we tack on the default
96 standard C library (unless we are building a shared library). */
99 #define LIB_SPEC "%{!shared:%{!symbolic:-lc}}"
101 /* Provide a LIBGCC_SPEC appropriate for svr4. We also want to exclude
102 libgcc when -symbolic. */
105 #define LIBGCC_SPEC "%{!shared:%{!symbolic:-lgcc}}"
107 /* Provide an ENDFILE_SPEC appropriate for svr4. Here we tack on our own
108 magical crtend.o file (see crtstuff.c) which provides part of the
109 support for getting C++ file-scope static object constructed before
110 entering `main', followed by the normal svr3/svr4 "finalizer" file,
111 which is either `gcrtn.o' or `crtn.o'. */
114 #define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o}%{!pg:crtn.o%s}"
116 /* Provide a LINK_SPEC appropriate for svr4. Here we provide support
117 for the special GCC options -static, -shared, and -symbolic which
118 allow us to link things in one of these three modes by applying the
119 appropriate combinations of options at link-time. We also provide
120 support here for as many of the other svr4 linker options as seems
121 reasonable, given that some of them conflict with options for other
122 svr4 tools (e.g. the assembler). In particular, we do support the
123 -z*, -V, -b, -t, -Qy, -Qn, and -YP* options here, and the -e*,
124 -l*, -o*, -r, -s, -u*, and -L* options are directly supported
125 by gcc.c itself. We don't directly support the -m (generate load
126 map) option because that conflicts with the -m (run m4) option of
127 the svr4 assembler. We also don't directly support the svr4 linker's
128 -I* or -M* options because these conflict with existing GCC options.
129 We do however allow passing arbitrary options to the svr4 linker
130 via the -Wl, option. We don't support the svr4 linker's -a option
131 at all because it is totally useless and because it conflicts with
134 Note that gcc doesn't allow a space to follow -Y in a -YP,* option.
136 When the -G link option is used (-shared and -symbolic) a final link is
140 #define LINK_SPEC "%{h*} %{v:-V} \
142 %{static:-dn -Bstatic} \
143 %{shared:-G -dy -z text} \
144 %{symbolic:-Bsymbolic -G -dy -z text} \
147 %{!YP,*:%{p:-Y P,/lib/libp:/usr/lib/libp:/lib:/usr/lib} \
148 %{!p:-Y P,/lib:/usr/lib}} \
151 /* Gcc automatically adds in one of the files /lib/values-Xc.o,
152 /lib/values-Xa.o, or /lib/values-Xt.o for each final link
153 step (depending upon the other gcc options selected, such as
154 -traditional and -ansi). These files each contain one (initialized)
155 copy of a special variable called `_lib_version'. Each one of these
156 files has `_lib_version' initialized to a different (enum) value.
157 The SVR4 library routines query the value of `_lib_version' at run
158 to decide how they should behave. Specifically, they decide (based
159 upon the value of `_lib_version') if they will act in a strictly ANSI
160 conforming manner or not.
163 #undef STARTFILE_SPEC
164 #define STARTFILE_SPEC "%{!shared: \
166 %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}}}\
167 %{pg:gcrti.o%s}%{!pg:crti.o%s} \
168 %{ansi:values-Xc.o%s} \
170 %{traditional:values-Xt.o%s} \
171 %{!traditional:values-Xa.o%s}} \
174 /* Attach a special .ident directive to the end of the file to identify
175 the version of GCC which compiled this code. The format of the
176 .ident string is patterned after the ones produced by native svr4
179 #define IDENT_ASM_OP ".ident"
181 #define ASM_FILE_END(FILE) \
183 if (!flag_no_ident) \
184 fprintf ((FILE), "\t%s\t\"GCC: (GNU) %s\"\n", \
185 IDENT_ASM_OP, version_string); \
188 /* Allow #sccs in preprocessor. */
190 #define SCCS_DIRECTIVE
192 /* Output #ident as a .ident. */
194 #define ASM_OUTPUT_IDENT(FILE, NAME) \
195 fprintf (FILE, "\t%s\t\"%s\"\n", IDENT_ASM_OP, NAME);
197 /* Use periods rather than dollar signs in special g++ assembler names. */
199 #define NO_DOLLAR_IN_LABEL
201 /* Writing `int' for a bitfield forces int alignment for the structure. */
203 #define PCC_BITFIELD_TYPE_MATTERS 1
205 /* Implicit library calls should use memcpy, not bcopy, etc. */
207 #define TARGET_MEM_FUNCTIONS
209 /* Handle #pragma weak and #pragma pack. */
211 #define HANDLE_SYSV_PRAGMA
213 /* System V Release 4 uses DWARF debugging info. */
215 #define DWARF_DEBUGGING_INFO
217 /* The numbers used to denote specific machine registers in the System V
218 Release 4 DWARF debugging information are quite likely to be totally
219 different from the numbers used in BSD stabs debugging information
220 for the same kind of target machine. Thus, we undefine the macro
221 DBX_REGISTER_NUMBER here as an extra inducement to get people to
222 provide proper machine-specific definitions of DBX_REGISTER_NUMBER
223 (which is also used to provide DWARF registers numbers in dwarfout.c)
224 in their tm.h files which include this file. */
226 #undef DBX_REGISTER_NUMBER
228 /* gas on SVR4 supports the use of .stabs. Permit -gstabs to be used
229 in general, although it will only work when using gas. */
231 #define DBX_DEBUGGING_INFO
233 /* Use DWARF debugging info by default. */
235 #ifndef PREFERRED_DEBUGGING_TYPE
236 #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
239 /* Make LBRAC and RBRAC addresses relative to the start of the
240 function. The native Solaris stabs debugging format works this
241 way, gdb expects it, and it reduces the number of relocation
244 #define DBX_BLOCKS_FUNCTION_RELATIVE 1
246 /* When using stabs, gcc2_compiled must be a stabs entry, not an
247 ordinary symbol, or gdb won't see it. The stabs entry must be
248 before the N_SO in order for gdb to find it. */
250 #define ASM_IDENTIFY_GCC(FILE) \
253 if (write_symbols != DBX_DEBUG) \
254 fputs ("gcc2_compiled.:\n", FILE); \
256 fputs ("\t.stabs\t\"gcc2_compiled.\", 0x3c, 0, 0, 0\n", FILE); \
260 /* Like block addresses, stabs line numbers are relative to the
263 #define ASM_OUTPUT_SOURCE_LINE(file, line) \
266 static int sym_lineno = 1; \
267 fprintf (file, ".stabn 68,0,%d,.LM%d-", \
269 assemble_name (file, \
270 XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0));\
271 fprintf (file, "\n.LM%d:\n", sym_lineno); \
276 /* In order for relative line numbers to work, we must output the
277 stabs entry for the function name first. */
279 #define DBX_FUNCTION_FIRST
281 /* Generate a blank trailing N_SO to mark the end of the .o file, since
282 we can't depend upon the linker to mark .o file boundaries with
285 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
287 "\t.text\n\t.stabs \"\",%d,0,0,.Letext\n.Letext:\n", N_SO)
289 /* Define the actual types of some ANSI-mandated types. (These
290 definitions should work for most SVR4 systems). */
293 #define SIZE_TYPE "unsigned int"
296 #define PTRDIFF_TYPE "int"
299 #define WCHAR_TYPE "long int"
301 #undef WCHAR_TYPE_SIZE
302 #define WCHAR_TYPE_SIZE BITS_PER_WORD
304 /* This causes trouble, because it requires the host machine
305 to support ANSI C. */
306 /* #define MULTIBYTE_CHARS */
309 #define ASM_BYTE_OP ".byte"
312 #define SET_ASM_OP ".set"
314 /* This is how to begin an assembly language file. Most svr4 assemblers want
315 at least a .file directive to come first, and some want to see a .version
316 directive come right after that. Here we just establish a default
317 which generates only the .file directive. If you need a .version
318 directive for any specific target, you should override this definition
319 in the target-specific file which includes this one. */
321 #undef ASM_FILE_START
322 #define ASM_FILE_START(FILE) \
323 output_file_directive ((FILE), main_input_filename)
325 /* This is how to allocate empty space in some section. The .zero
326 pseudo-op is used for this on most svr4 assemblers. */
328 #define SKIP_ASM_OP ".zero"
330 #undef ASM_OUTPUT_SKIP
331 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
332 fprintf (FILE, "\t%s\t%u\n", SKIP_ASM_OP, (SIZE))
334 /* The prefix to add to user-visible assembler symbols.
336 For System V Release 4 the convention is *not* to prepend a leading
337 underscore onto user-level symbol names. */
339 #undef USER_LABEL_PREFIX
340 #define USER_LABEL_PREFIX ""
342 /* This is how to output an internal numbered label where
343 PREFIX is the class of label and NUM is the number within the class.
345 For most svr4 systems, the convention is that any symbol which begins
346 with a period is not put into the linker symbol table by the assembler. */
348 #undef ASM_OUTPUT_INTERNAL_LABEL
349 #define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \
351 fprintf (FILE, ".%s%d:\n", PREFIX, NUM); \
354 /* This is how to store into the string LABEL
355 the symbol_ref name of an internal numbered label where
356 PREFIX is the class of label and NUM is the number within the class.
357 This is suitable for output with `assemble_name'.
359 For most svr4 systems, the convention is that any symbol which begins
360 with a period is not put into the linker symbol table by the assembler. */
362 #undef ASM_GENERATE_INTERNAL_LABEL
363 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
365 sprintf (LABEL, "*.%s%d", PREFIX, NUM); \
368 /* Output the label which precedes a jumptable. Note that for all svr4
369 systems where we actually generate jumptables (which is to say every
370 svr4 target except i386, where we use casesi instead) we put the jump-
371 tables into the .rodata section and since other stuff could have been
372 put into the .rodata section prior to any given jumptable, we have to
373 make sure that the location counter for the .rodata section gets pro-
374 perly re-aligned prior to the actual beginning of the jump table. */
376 #define ALIGN_ASM_OP ".align"
378 #ifndef ASM_OUTPUT_BEFORE_CASE_LABEL
379 #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
380 ASM_OUTPUT_ALIGN ((FILE), 2);
383 #undef ASM_OUTPUT_CASE_LABEL
384 #define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,JUMPTABLE) \
386 ASM_OUTPUT_BEFORE_CASE_LABEL (FILE, PREFIX, NUM, JUMPTABLE) \
387 ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \
390 /* The standard SVR4 assembler seems to require that certain builtin
391 library routines (e.g. .udiv) be explicitly declared as .globl
392 in each assembly file where they are referenced. */
394 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
395 ASM_GLOBALIZE_LABEL (FILE, XSTR (FUN, 0))
397 /* This says how to output assembler code to declare an
398 uninitialized external linkage data object. Under SVR4,
399 the linker seems to want the alignment of data objects
400 to depend on their types. We do exactly that here. */
402 #define COMMON_ASM_OP ".comm"
404 #undef ASM_OUTPUT_ALIGNED_COMMON
405 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
407 fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \
408 assemble_name ((FILE), (NAME)); \
409 fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
412 /* This says how to output assembler code to declare an
413 uninitialized internal linkage data object. Under SVR4,
414 the linker seems to want the alignment of data objects
415 to depend on their types. We do exactly that here. */
417 #define LOCAL_ASM_OP ".local"
419 #undef ASM_OUTPUT_ALIGNED_LOCAL
420 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
422 fprintf ((FILE), "\t%s\t", LOCAL_ASM_OP); \
423 assemble_name ((FILE), (NAME)); \
424 fprintf ((FILE), "\n"); \
425 ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
428 /* This is the pseudo-op used to generate a 32-bit word of data with a
429 specific value in some section. This is the same for all known svr4
432 #define INT_ASM_OP ".long"
434 /* This is the pseudo-op used to generate a contiguous sequence of byte
435 values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
436 AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */
438 #undef ASCII_DATA_ASM_OP
439 #define ASCII_DATA_ASM_OP ".ascii"
441 /* Support const sections and the ctors and dtors sections for g++.
442 Note that there appears to be two different ways to support const
443 sections at the moment. You can either #define the symbol
444 READONLY_DATA_SECTION (giving it some code which switches to the
445 readonly data section) or else you can #define the symbols
446 EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
447 SELECT_RTX_SECTION. We do both here just to be on the safe side. */
449 #define USE_CONST_SECTION 1
451 #define CONST_SECTION_ASM_OP ".section\t.rodata"
453 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
455 Note that we want to give these sections the SHF_WRITE attribute
456 because these sections will actually contain data (i.e. tables of
457 addresses of functions in the current root executable or shared library
458 file) and, in the case of a shared library, the relocatable addresses
459 will have to be properly resolved/relocated (and then written into) by
460 the dynamic linker when it actually attaches the given shared library
461 to the executing process. (Note that on SVR4, you may wish to use the
462 `-z text' option to the ELF linker, when building a shared library, as
463 an additional check that you are doing everything right. But if you do
464 use the `-z text' option when building a shared library, you will get
465 errors unless the .ctors and .dtors sections are marked as writable
466 via the SHF_WRITE attribute.) */
468 #define CTORS_SECTION_ASM_OP ".section\t.ctors,\"aw\""
469 #define DTORS_SECTION_ASM_OP ".section\t.dtors,\"aw\""
471 /* On svr4, we *do* have support for the .init and .fini sections, and we
472 can put stuff in there to be executed before and after `main'. We let
473 crtstuff.c and other files know this by defining the following symbols.
474 The definitions say how to change sections to the .init and .fini
475 sections. This is the same for all known svr4 assemblers. */
477 #define INIT_SECTION_ASM_OP ".section\t.init"
478 #define FINI_SECTION_ASM_OP ".section\t.fini"
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 We make the section read-only and executable for a function decl,
541 read-only for a const data decl, and writable for a non-const data decl. */
542 #define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \
543 fprintf (FILE, ".section\t%s,\"%s\",@progbits\n", NAME, \
544 (DECL) && TREE_CODE (DECL) == FUNCTION_DECL ? "ax" : \
545 (DECL) && DECL_READONLY_SECTION (DECL, RELOC) ? "a" : "aw")
548 /* A C statement (sans semicolon) to output an element in the table of
549 global constructors. */
550 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
553 fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
554 assemble_name (FILE, NAME); \
555 fprintf (FILE, "\n"); \
558 /* A C statement (sans semicolon) to output an element in the table of
559 global destructors. */
560 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
563 fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
564 assemble_name (FILE, NAME); \
565 fprintf (FILE, "\n"); \
568 /* A C statement or statements to switch to the appropriate
569 section for output of DECL. DECL is either a `VAR_DECL' node
570 or a constant of some sort. RELOC indicates whether forming
571 the initial value of DECL requires link-time relocations. */
573 #define SELECT_SECTION(DECL,RELOC) \
575 if (TREE_CODE (DECL) == STRING_CST) \
577 if (! flag_writable_strings) \
582 else if (TREE_CODE (DECL) == VAR_DECL) \
584 if ((flag_pic && RELOC) \
585 || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
586 || !DECL_INITIAL (DECL) \
587 || (DECL_INITIAL (DECL) != error_mark_node \
588 && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
597 /* A C statement or statements to switch to the appropriate
598 section for output of RTX in mode MODE. RTX is some kind
599 of constant in RTL. The argument MODE is redundant except
600 in the case of a `const_int' rtx. Currently, these always
601 go into the const section. */
603 #undef SELECT_RTX_SECTION
604 #define SELECT_RTX_SECTION(MODE,RTX) const_section()
606 /* Define the strings used for the special svr4 .type and .size directives.
607 These strings generally do not vary from one system running svr4 to
608 another, but if a given system (e.g. m88k running svr) needs to use
609 different pseudo-op names for these, they may be overridden in the
610 file which includes this one. */
612 #define TYPE_ASM_OP ".type"
613 #define SIZE_ASM_OP ".size"
615 /* This is how we tell the assembler that a symbol is weak. */
617 #define ASM_WEAKEN_LABEL(FILE,NAME) \
618 do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
619 fputc ('\n', FILE); } while (0)
621 /* The following macro defines the format used to output the second
622 operand of the .type assembler directive. Different svr4 assemblers
623 expect various different forms for this operand. The one given here
624 is just a default. You may need to override it in your machine-
625 specific tm.h file (depending upon the particulars of your assembler). */
627 #define TYPE_OPERAND_FMT "@%s"
629 /* Write the extra assembler code needed to declare a function's result.
630 Most svr4 assemblers don't require any special declaration of the
631 result value, but there are exceptions. */
633 #ifndef ASM_DECLARE_RESULT
634 #define ASM_DECLARE_RESULT(FILE, RESULT)
637 /* These macros generate the special .type and .size directives which
638 are used to set the corresponding fields of the linker symbol table
639 entries in an ELF object file under SVR4. These macros also output
640 the starting labels for the relevant functions/objects. */
642 /* Write the extra assembler code needed to declare a function properly.
643 Some svr4 assemblers need to also have something extra said about the
644 function's return value. We allow for that here. */
646 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
648 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
649 assemble_name (FILE, NAME); \
651 fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
653 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
654 ASM_OUTPUT_LABEL(FILE, NAME); \
657 /* Write the extra assembler code needed to declare an object properly. */
659 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
661 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
662 assemble_name (FILE, NAME); \
664 fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
666 size_directive_output = 0; \
667 if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
669 size_directive_output = 1; \
670 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
671 assemble_name (FILE, NAME); \
672 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
674 ASM_OUTPUT_LABEL(FILE, NAME); \
677 /* Output the size directive for a decl in rest_of_decl_compilation
678 in the case where we did not do so before the initializer.
679 Once we find the error_mark_node, we know that the value of
680 size_directive_output was set
681 by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
683 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
685 char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
686 if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
687 && ! AT_END && TOP_LEVEL \
688 && DECL_INITIAL (DECL) == error_mark_node \
689 && !size_directive_output) \
691 size_directive_output = 1; \
692 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
693 assemble_name (FILE, name); \
694 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
698 /* This is how to declare the size of a function. */
700 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
702 if (!flag_inhibit_size_directive) \
705 static int labelno; \
707 ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
708 ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
709 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
710 assemble_name (FILE, (FNAME)); \
711 fprintf (FILE, ","); \
712 assemble_name (FILE, label); \
713 fprintf (FILE, "-"); \
714 assemble_name (FILE, (FNAME)); \
719 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
720 ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
721 corresponds to a particular byte value [0..255]. For any
722 given byte value, if the value in the corresponding table
723 position is zero, the given character can be output directly.
724 If the table value is 1, the byte must be output as a \ooo
725 octal escape. If the tables value is anything else, then the
726 byte value should be output as a \ followed by the value
727 in the table. Note that we can use standard UN*X escape
728 sequences for many control characters, but we don't use
729 \a to represent BEL because some svr4 assemblers (e.g. on
730 the i386) don't know about that. Also, we don't use \v
731 since some versions of gas, such as 2.2 did not accept it. */
734 "\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\
735 \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\
736 \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\
737 \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\
738 \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\
739 \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\
740 \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\
741 \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"
743 /* Some svr4 assemblers have a limit on the number of characters which
744 can appear in the operand of a .string directive. If your assembler
745 has such a limitation, you should define STRING_LIMIT to reflect that
746 limit. Note that at least some svr4 assemblers have a limit on the
747 actual number of bytes in the double-quoted string, and that they
748 count each character in an escape sequence as one byte. Thus, an
749 escape sequence like \377 would count as four bytes.
751 If your target assembler doesn't support the .string directive, you
752 should define this to zero.
755 #define STRING_LIMIT ((unsigned) 256)
757 #define STRING_ASM_OP ".string"
759 /* The routine used to output NUL terminated strings. We use a special
760 version of this for most svr4 targets because doing so makes the
761 generated assembly code more compact (and thus faster to assemble)
762 as well as more readable, especially for targets like the i386
763 (where the only alternative is to output character sequences as
764 comma separated lists of numbers). */
766 #define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \
769 register unsigned char *_limited_str = (unsigned char *) (STR); \
770 register unsigned ch; \
771 fprintf ((FILE), "\t%s\t\"", STRING_ASM_OP); \
772 for (; ch = *_limited_str; _limited_str++) \
774 register int escape; \
775 switch (escape = ESCAPES[ch]) \
781 fprintf ((FILE), "\\%03o", ch); \
784 putc ('\\', (FILE)); \
785 putc (escape, (FILE)); \
789 fprintf ((FILE), "\"\n"); \
793 /* The routine used to output sequences of byte values. We use a special
794 version of this for most svr4 targets because doing so makes the
795 generated assembly code more compact (and thus faster to assemble)
796 as well as more readable. Note that if we find subparts of the
797 character sequence which end with NUL (and which are shorter than
798 STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */
800 #undef ASM_OUTPUT_ASCII
801 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
804 register unsigned char *_ascii_bytes = (unsigned char *) (STR); \
805 register unsigned char *limit = _ascii_bytes + (LENGTH); \
806 register unsigned bytes_in_chunk = 0; \
807 for (; _ascii_bytes < limit; _ascii_bytes++) \
809 register unsigned char *p; \
810 if (bytes_in_chunk >= 60) \
812 fprintf ((FILE), "\"\n"); \
813 bytes_in_chunk = 0; \
815 for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \
817 if (p < limit && (p - _ascii_bytes) <= STRING_LIMIT) \
819 if (bytes_in_chunk > 0) \
821 fprintf ((FILE), "\"\n"); \
822 bytes_in_chunk = 0; \
824 ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \
829 register int escape; \
830 register unsigned ch; \
831 if (bytes_in_chunk == 0) \
832 fprintf ((FILE), "\t%s\t\"", ASCII_DATA_ASM_OP); \
833 switch (escape = ESCAPES[ch = *_ascii_bytes]) \
840 fprintf ((FILE), "\\%03o", ch); \
841 bytes_in_chunk += 4; \
844 putc ('\\', (FILE)); \
845 putc (escape, (FILE)); \
846 bytes_in_chunk += 2; \
851 if (bytes_in_chunk > 0) \
852 fprintf ((FILE), "\"\n"); \
856 /* All SVR4 targets use the ELF object file format. */
857 #define OBJECT_FORMAT_ELF