1 /* debug.h -- Describe generic debugging information.
2 Copyright (C) 1995, 1996 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor <ian@cygnus.com>.
5 This file is part of GNU Binutils.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 /* This header file describes a generic debugging information format.
26 We may eventually have readers which convert different formats into
27 this generic format, and writers which write it out. The initial
28 impetus for this was writing a convertor from stabs to HP IEEE-695
31 /* Different kinds of types. */
35 /* Indirect via a pointer. */
53 /* Union class (can this really happen?). */
54 DEBUG_KIND_UNION_CLASS,
55 /* Enumeration type. */
73 /* Const qualified type. */
75 /* Volatile qualified type. */
83 /* Different kinds of variables. */
87 /* A global variable. */
89 /* A static variable. */
91 /* A local static variable. */
93 /* A local variable. */
95 /* A register variable. */
99 /* Different kinds of function parameters. */
103 /* A stack based parameter. */
105 /* A register parameter. */
107 /* A stack based reference parameter. */
108 DEBUG_PARM_REFERENCE,
109 /* A register reference parameter. */
113 /* Different kinds of visibility. */
115 enum debug_visibility
117 /* A public field (e.g., a field in a C struct). */
118 DEBUG_VISIBILITY_PUBLIC,
119 /* A protected field. */
120 DEBUG_VISIBILITY_PROTECTED,
121 /* A private field. */
122 DEBUG_VISIBILITY_PRIVATE,
123 /* A field which should be ignored. */
124 DEBUG_VISIBILITY_IGNORE
129 typedef struct debug_type *debug_type;
131 #define DEBUG_TYPE_NULL ((debug_type) NULL)
133 /* A field in a struct or union. */
135 typedef struct debug_field *debug_field;
137 #define DEBUG_FIELD_NULL ((debug_field) NULL)
139 /* A base class for an object. */
141 typedef struct debug_baseclass *debug_baseclass;
143 #define DEBUG_BASECLASS_NULL ((debug_baseclass) NULL)
145 /* A method of an object. */
147 typedef struct debug_method *debug_method;
149 #define DEBUG_METHOD_NULL ((debug_method) NULL)
151 /* The arguments to a method function of an object. These indicate
152 which method to run. */
154 typedef struct debug_method_variant *debug_method_variant;
156 #define DEBUG_METHOD_VARIANT_NULL ((debug_method_variant) NULL)
158 /* This structure is passed to debug_write. It holds function
159 pointers that debug_write will call based on the accumulated
160 debugging information. */
162 struct debug_write_fns
164 /* This is called at the start of each new compilation unit with the
165 name of the main file in the new unit. */
166 boolean (*start_compilation_unit) PARAMS ((PTR, const char *));
168 /* This is called at the start of each source file within a
169 compilation unit, before outputting any global information for
170 that file. The argument is the name of the file. */
171 boolean (*start_source) PARAMS ((PTR, const char *));
173 /* Each writer must keep a stack of types. */
175 /* Push an empty type onto the type stack. This type can appear if
176 there is a reference to a type which is never defined. */
177 boolean (*empty_type) PARAMS ((PTR));
179 /* Push a void type onto the type stack. */
180 boolean (*void_type) PARAMS ((PTR));
182 /* Push an integer type onto the type stack, given the size and
183 whether it is unsigned. */
184 boolean (*int_type) PARAMS ((PTR, unsigned int, boolean));
186 /* Push a floating type onto the type stack, given the size. */
187 boolean (*float_type) PARAMS ((PTR, unsigned int));
189 /* Push a complex type onto the type stack, given the size. */
190 boolean (*complex_type) PARAMS ((PTR, unsigned int));
192 /* Push a boolean type onto the type stack, given the size. */
193 boolean (*bool_type) PARAMS ((PTR, unsigned int));
195 /* Push an enum type onto the type stack, given the tag, a NULL
196 terminated array of names and the associated values. If there is
197 no tag, the tag argument will be NULL. */
198 boolean (*enum_type) PARAMS ((PTR, const char *, const char **,
201 /* Pop the top type on the type stack, and push a pointer to that
202 type onto the type stack. */
203 boolean (*pointer_type) PARAMS ((PTR));
205 /* Pop the top type on the type stack, and push a function returning
206 that type onto the type stack. */
207 boolean (*function_type) PARAMS ((PTR));
209 /* Pop the top type on the type stack, and push a reference to that
210 type onto the type stack. */
211 boolean (*reference_type) PARAMS ((PTR));
213 /* Pop the top type on the type stack, and push a range of that type
214 with the given lower and upper bounds onto the type stack. */
215 boolean (*range_type) PARAMS ((PTR, bfd_signed_vma, bfd_signed_vma));
217 /* Push an array type onto the type stack. The top type on the type
218 stack is the range, and the next type on the type stack is the
219 element type. These should be popped before the array type is
220 pushed. The arguments are the lower bound, the upper bound, and
221 whether the array is a string. */
222 boolean (*array_type) PARAMS ((PTR, bfd_signed_vma, bfd_signed_vma,
225 /* Pop the top type on the type stack, and push a set of that type
226 onto the type stack. The argument indicates whether this set is
228 boolean (*set_type) PARAMS ((PTR, boolean));
230 /* Push an offset type onto the type stack. The top type on the
231 type stack is the target type, and the next type on the type
232 stack is the base type. These should be popped before the offset
234 boolean (*offset_type) PARAMS ((PTR));
236 /* Push a method type onto the type stack. If the second argument
237 is true, the top type on the stack is the class to which the
238 method belongs; otherwise, the class must be determined by the
239 class to which the method is attached. The third argument is the
240 number of argument types; these are pushed onto the type stack in
241 reverse order (the first type popped is the last argument to the
242 method). An argument type of -1 means that no argument in
243 formation is available. The next type on the type stack below
244 the domain and the argument types is the return type of the
245 method. All these types must be popped, and then the method type
247 boolean (*method_type) PARAMS ((PTR, boolean, int));
249 /* Pop the top type off the type stack, and push a const qualified
250 version of that type onto the type stack. */
251 boolean (*const_type) PARAMS ((PTR));
253 /* Pop the top type off the type stack, and push a volatile
254 qualified version of that type onto the type stack. */
255 boolean (*volatile_type) PARAMS ((PTR));
257 /* Start building a struct. This is followed by calls to the
258 struct_field function, and finished by a call to the
259 end_struct_type function. The second argument is the tag; this
260 will be NULL if there isn't one. The boolean argument is true
261 for a struct, false for a union. The unsigned int argument is
263 boolean (*start_struct_type) PARAMS ((PTR, const char *, boolean,
266 /* Add a field to the struct type currently being built. The type
267 of the field should be popped off the type stack. The arguments
268 are the name, the bit position, the bit size (may be zero if the
269 field is not packed), and the visibility. */
270 boolean (*struct_field) PARAMS ((PTR, const char *, bfd_vma, bfd_vma,
271 enum debug_visibility));
273 /* Finish building a struct, and push it onto the type stack. */
274 boolean (*end_struct_type) PARAMS ((PTR));
276 /* Start building a class. This is followed by calls to several
277 functions: struct_field, class_static_member, class_baseclass,
278 class_start_method, class_method_variant,
279 class_static_method_variant, and class_end_method. The class is
280 finished by a call to end_class_type. The second argument is the
281 tag; this will be NULL if there isn't one. The boolean argument
282 is true for a struct, false for a union. The next argument is
283 the size. The next argument is true if there is a virtual
284 function table; if there is, the next argument is true if the
285 virtual function table can be found in the type itself, and is
286 false if the type of the object holding the virtual function
287 table should be popped from the type stack. */
288 boolean (*start_class_type) PARAMS ((PTR, const char *, boolean,
289 unsigned int, boolean, boolean));
291 /* Add a static member to the class currently being built. The
292 arguments are the field name, the physical name, and the
293 visibility. The type must be popped off the type stack. */
294 boolean (*class_static_member) PARAMS ((PTR, const char *, const char *,
295 enum debug_visibility));
297 /* Add a baseclass to the class currently being built. The type of
298 the baseclass must be popped off the type stack. The arguments
299 are the bit position, whether the class is virtual, and the
301 boolean (*class_baseclass) PARAMS ((PTR, bfd_vma, boolean,
302 enum debug_visibility));
304 /* Start adding a method to the class currently being built. This
305 is followed by calls to class_method_variant and
306 class_static_method_variant to describe different variants of the
307 method which take different arguments. The method is finished
308 with a call to class_end_method. The argument is the method
310 boolean (*class_start_method) PARAMS ((PTR, const char *));
312 /* Describe a variant to the class method currently being built.
313 The type of the variant must be popped off the type stack. The
314 second argument is a string which is either the physical name of
315 the function or describes the argument types; see the comment for
316 debug_make_method variant. The following arguments are the
317 visibility, whether the variant is const, whether the variant is
318 volatile, the offset in the virtual function table, and whether
319 the context is on the type stack (below the variant type). */
320 boolean (*class_method_variant) PARAMS ((PTR, const char *,
321 enum debug_visibility,
325 /* Describe a static variant to the class method currently being
326 built. The arguments are the same as for class_method_variant,
327 except that the last two arguments are omitted. The type of the
328 variant must be popped off the type stack. */
329 boolean (*class_static_method_variant) PARAMS ((PTR, const char *,
330 enum debug_visibility,
333 /* Finish describing a class method. */
334 boolean (*class_end_method) PARAMS ((PTR));
336 /* Finish describing a class, and push it onto the type stack. */
337 boolean (*end_class_type) PARAMS ((PTR));
339 /* Push a type on the stack which was given a name by an earlier
341 boolean (*typedef_type) PARAMS ((PTR, const char *));
343 /* Push a type on the stack which was given a name by an earlier
345 boolean (*tag_type) PARAMS ((PTR, const char *, enum debug_type_kind));
347 /* Pop the type stack, and typedef it to the given name. */
348 boolean (*typdef) PARAMS ((PTR, const char *));
350 /* Pop the type stack, and declare it as a tagged struct or union or
351 enum or whatever. The tag passed down here is redundant, since
352 was also passed when enum_type, start_struct_type, or
353 start_class_type was called. */
354 boolean (*tag) PARAMS ((PTR, const char *));
356 /* This is called to record a named integer constant. */
357 boolean (*int_constant) PARAMS ((PTR, const char *, bfd_vma));
359 /* This is called to record a named floating point constant. */
360 boolean (*float_constant) PARAMS ((PTR, const char *, double));
362 /* This is called to record a typed integer constant. The type is
363 popped off the type stack. */
364 boolean (*typed_constant) PARAMS ((PTR, const char *, bfd_vma));
366 /* This is called to record a variable. The type is popped off the
368 boolean (*variable) PARAMS ((PTR, const char *, enum debug_var_kind,
371 /* Start writing out a function. The return type must be popped off
372 the stack. The boolean is true if the function is global. This
373 is followed by calls to function_parameter, followed by block
375 boolean (*start_function) PARAMS ((PTR, const char *, boolean));
377 /* Record a function parameter for the current function. The type
378 must be popped off the stack. */
379 boolean (*function_parameter) PARAMS ((PTR, const char *,
380 enum debug_parm_kind, bfd_vma));
382 /* Start writing out a block. There is at least one top level block
383 per function. Blocks may be nested. The argument is the
384 starting address of the block. */
385 boolean (*start_block) PARAMS ((PTR, bfd_vma));
387 /* Finish writing out a block. The argument is the ending address
389 boolean (*end_block) PARAMS ((PTR, bfd_vma));
391 /* Finish writing out a function. */
392 boolean (*end_function) PARAMS ((PTR));
394 /* Record line number information for the current compilation unit. */
395 boolean (*lineno) PARAMS ((PTR, const char *, unsigned long, bfd_vma));
398 /* Exported functions. */
400 /* The first argument to most of these functions is a handle. This
401 handle is returned by the debug_init function. The purpose of the
402 handle is to permit the debugging routines to not use static
403 variables, and hence to be reentrant. This would be useful for a
404 program which wanted to handle two executables simultaneously. */
406 /* Return a debugging handle. */
408 extern PTR debug_init PARAMS ((void));
410 /* Set the source filename. This implicitly starts a new compilation
413 extern boolean debug_set_filename PARAMS ((PTR, const char *));
415 /* Append a string to the source filename. */
417 extern boolean debug_append_filename PARAMS ((PTR, const char *));
419 /* Change source files to the given file name. This is used for
420 include files in a single compilation unit. */
422 extern boolean debug_start_source PARAMS ((PTR, const char *));
424 /* Record a function definition. This implicitly starts a function
425 block. The debug_type argument is the type of the return value.
426 The boolean indicates whether the function is globally visible.
427 The bfd_vma is the address of the start of the function. Currently
428 the parameter types are specified by calls to
429 debug_record_parameter. */
431 extern boolean debug_record_function
432 PARAMS ((PTR, const char *, debug_type, boolean, bfd_vma));
434 /* Record a parameter for the current function. */
436 extern boolean debug_record_parameter
437 PARAMS ((PTR, const char *, debug_type, enum debug_parm_kind, bfd_vma));
439 /* End a function definition. The argument is the address where the
442 extern boolean debug_end_function PARAMS ((PTR, bfd_vma));
444 /* Start a block in a function. All local information will be
445 recorded in this block, until the matching call to debug_end_block.
446 debug_start_block and debug_end_block may be nested. The argument
447 is the address at which this block starts. */
449 extern boolean debug_start_block PARAMS ((PTR, bfd_vma));
451 /* Finish a block in a function. This matches the call to
452 debug_start_block. The argument is the address at which this block
455 extern boolean debug_end_block PARAMS ((PTR, bfd_vma));
457 /* Associate a line number in the current source file with a given
460 extern boolean debug_record_line PARAMS ((PTR, unsigned long, bfd_vma));
462 /* Start a named common block. This is a block of variables that may
465 extern boolean debug_start_common_block PARAMS ((PTR, const char *));
467 /* End a named common block. */
469 extern boolean debug_end_common_block PARAMS ((PTR, const char *));
471 /* Record a named integer constant. */
473 extern boolean debug_record_int_const PARAMS ((PTR, const char *, bfd_vma));
475 /* Record a named floating point constant. */
477 extern boolean debug_record_float_const PARAMS ((PTR, const char *, double));
479 /* Record a typed constant with an integral value. */
481 extern boolean debug_record_typed_const
482 PARAMS ((PTR, const char *, debug_type, bfd_vma));
484 /* Record a label. */
486 extern boolean debug_record_label
487 PARAMS ((PTR, const char *, debug_type, bfd_vma));
489 /* Record a variable. */
491 extern boolean debug_record_variable
492 PARAMS ((PTR, const char *, debug_type, enum debug_var_kind, bfd_vma));
494 /* Make an indirect type. The first argument is a pointer to the
495 location where the real type will be placed. The second argument
496 is the type tag, if there is one; this may be NULL; the only
497 purpose of this argument is so that debug_get_type_name can return
498 something useful. This function may be used when a type is
499 referenced before it is defined. */
501 extern debug_type debug_make_indirect_type
502 PARAMS ((PTR, debug_type *, const char *));
504 /* Make a void type. */
506 extern debug_type debug_make_void_type PARAMS ((PTR));
508 /* Make an integer type of a given size. The boolean argument is true
509 if the integer is unsigned. */
511 extern debug_type debug_make_int_type PARAMS ((PTR, unsigned int, boolean));
513 /* Make a floating point type of a given size. FIXME: On some
514 platforms, like an Alpha, you probably need to be able to specify
517 extern debug_type debug_make_float_type PARAMS ((PTR, unsigned int));
519 /* Make a boolean type of a given size. */
521 extern debug_type debug_make_bool_type PARAMS ((PTR, unsigned int));
523 /* Make a complex type of a given size. */
525 extern debug_type debug_make_complex_type PARAMS ((PTR, unsigned int));
527 /* Make a structure type. The second argument is true for a struct,
528 false for a union. The third argument is the size of the struct.
529 The fourth argument is a NULL terminated array of fields. */
531 extern debug_type debug_make_struct_type
532 PARAMS ((PTR, boolean, bfd_vma, debug_field *));
534 /* Make an object type. The first three arguments after the handle
535 are the same as for debug_make_struct_type. The next arguments are
536 a NULL terminated array of base classes, a NULL terminated array of
537 methods, the type of the object holding the virtual function table
538 if it is not this object, and a boolean which is true if this
539 object has its own virtual function table. */
541 extern debug_type debug_make_object_type
542 PARAMS ((PTR, boolean, bfd_vma, debug_field *, debug_baseclass *,
543 debug_method *, debug_type, boolean));
545 /* Make an enumeration type. The arguments are a null terminated
546 array of strings, and an array of corresponding values. */
548 extern debug_type debug_make_enum_type
549 PARAMS ((PTR, const char **, bfd_signed_vma *));
551 /* Make a pointer to a given type. */
553 extern debug_type debug_make_pointer_type
554 PARAMS ((PTR, debug_type));
556 /* Make a function returning a given type. FIXME: We should be able
557 to record the parameter types. */
559 extern debug_type debug_make_function_type PARAMS ((PTR, debug_type));
561 /* Make a reference to a given type. */
563 extern debug_type debug_make_reference_type PARAMS ((PTR, debug_type));
565 /* Make a range of a given type from a lower to an upper bound. */
567 extern debug_type debug_make_range_type
568 PARAMS ((PTR, debug_type, bfd_signed_vma, bfd_signed_vma));
570 /* Make an array type. The second argument is the type of an element
571 of the array. The third argument is the type of a range of the
572 array. The fourth and fifth argument are the lower and upper
573 bounds, respectively (if the bounds are not known, lower should be
574 0 and upper should be -1). The sixth argument is true if this
575 array is actually a string, as in C. */
577 extern debug_type debug_make_array_type
578 PARAMS ((PTR, debug_type, debug_type, bfd_signed_vma, bfd_signed_vma,
581 /* Make a set of a given type. For example, a Pascal set type. The
582 boolean argument is true if this set is actually a bitstring, as in
585 extern debug_type debug_make_set_type PARAMS ((PTR, debug_type, boolean));
587 /* Make a type for a pointer which is relative to an object. The
588 second argument is the type of the object to which the pointer is
589 relative. The third argument is the type that the pointer points
592 extern debug_type debug_make_offset_type
593 PARAMS ((PTR, debug_type, debug_type));
595 /* Make a type for a method function. The second argument is the
596 return type, the third argument is the domain, and the fourth
597 argument is a NULL terminated array of argument types. The domain
598 and the argument array may be NULL, in which case this is a stub
599 method and that information is not available. Stabs debugging uses
600 this, and gets the argument types from the mangled name. */
602 extern debug_type debug_make_method_type
603 PARAMS ((PTR, debug_type, debug_type, debug_type *));
605 /* Make a const qualified version of a given type. */
607 extern debug_type debug_make_const_type PARAMS ((PTR, debug_type));
609 /* Make a volatile qualified version of a given type. */
611 extern debug_type debug_make_volatile_type PARAMS ((PTR, debug_type));
613 /* Make an undefined tagged type. For example, a struct which has
614 been mentioned, but not defined. */
616 extern debug_type debug_make_undefined_tagged_type
617 PARAMS ((PTR, const char *, enum debug_type_kind));
619 /* Make a base class for an object. The second argument is the base
620 class type. The third argument is the bit position of this base
621 class in the object (always 0 unless doing multiple inheritance).
622 The fourth argument is whether this is a virtual class. The fifth
623 argument is the visibility of the base class. */
625 extern debug_baseclass debug_make_baseclass
626 PARAMS ((PTR, debug_type, bfd_vma, boolean, enum debug_visibility));
628 /* Make a field for a struct. The second argument is the name. The
629 third argument is the type of the field. The fourth argument is
630 the bit position of the field. The fifth argument is the size of
631 the field (it may be zero). The sixth argument is the visibility
634 extern debug_field debug_make_field
635 PARAMS ((PTR, const char *, debug_type, bfd_vma, bfd_vma,
636 enum debug_visibility));
638 /* Make a static member of an object. The second argument is the
639 name. The third argument is the type of the member. The fourth
640 argument is the physical name of the member (i.e., the name as a
641 global variable). The fifth argument is the visibility of the
644 extern debug_field debug_make_static_member
645 PARAMS ((PTR, const char *, debug_type, const char *,
646 enum debug_visibility));
648 /* Make a method. The second argument is the name, and the third
649 argument is a NULL terminated array of method variants. Each
650 method variant is a method with this name but with different
653 extern debug_method debug_make_method
654 PARAMS ((PTR, const char *, debug_method_variant *));
656 /* Make a method variant. The second argument is either the physical
657 name of the function, or the encoded argument types, depending upon
658 whether the third argument specifies the argument types or not.
659 The third argument is the type of the function. The fourth
660 argument is the visibility. The fifth argument is whether this is
661 a const function. The sixth argument is whether this is a volatile
662 function. The seventh argument is the offset in the virtual
663 function table, if any. The eighth argument is the virtual
664 function context. FIXME: Are the const and volatile arguments
665 necessary? Could we just use debug_make_const_type? The handling
666 of the second argument is biased toward the way that stabs works. */
668 extern debug_method_variant debug_make_method_variant
669 PARAMS ((PTR, const char *, debug_type, enum debug_visibility, boolean,
670 boolean, bfd_vma, debug_type));
672 /* Make a static method argument. The arguments are the same as for
673 debug_make_method_variant, except that the last two are omitted
674 since a static method can not also be virtual. */
676 extern debug_method_variant debug_make_static_method_variant
677 PARAMS ((PTR, const char *, debug_type, enum debug_visibility, boolean,
680 /* Name a type. This returns a new type with an attached name. */
682 extern debug_type debug_name_type PARAMS ((PTR, const char *, debug_type));
684 /* Give a tag to a type, such as a struct or union. This returns a
685 new type with an attached tag. */
687 extern debug_type debug_tag_type PARAMS ((PTR, const char *, debug_type));
689 /* Record the size of a given type. */
691 extern boolean debug_record_type_size PARAMS ((PTR, debug_type, unsigned int));
693 /* Find a tagged type. */
695 extern debug_type debug_find_tagged_type
696 PARAMS ((PTR, const char *, enum debug_type_kind));
698 /* Get the name of a type. */
700 extern const char *debug_get_type_name PARAMS ((PTR, debug_type));
702 /* Write out the recorded debugging information. This takes a set of
703 function pointers which are called to do the actual writing. The
704 first PTR is the debugging handle. The second PTR is a handle
705 which is passed to the functions. */
707 extern boolean debug_write PARAMS ((PTR, const struct debug_write_fns *, PTR));