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1.1 root 1: /* Output sdb-format symbol table information from GNU compiler.
2: Copyright (C) 1988, 1992 Free Software Foundation, Inc.
3:
4: This file is part of GNU CC.
5:
6: GNU CC is free software; you can redistribute it and/or modify
7: it under the terms of the GNU General Public License as published by
8: the Free Software Foundation; either version 2, or (at your option)
9: any later version.
10:
11: GNU CC is distributed in the hope that it will be useful,
12: but WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: GNU General Public License for more details.
15:
16: You should have received a copy of the GNU General Public License
17: along with GNU CC; see the file COPYING. If not, write to
18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
19:
20: /* [email protected] says:
21: I modified the struct.c example and have a nm of a .o resulting from the
22: AT&T C compiler. From the example below I would conclude the following:
23:
24: 1. All .defs from structures are emitted as scanned. The example below
25: clearly shows the symbol table entries for BoxRec2 are after the first
26: function.
27:
28: 2. All functions and their locals (including statics) are emitted as scanned.
29:
30: 3. All nested unnamed union and structure .defs must be emitted before
31: the structure in which they are nested. The AT&T assembler is a
32: one pass beast as far as symbolics are concerned.
33:
34: 4. All structure .defs are emitted before the typedefs that refer to them.
35:
36: 5. All top level static and external variable definitions are moved to the
1.1.1.3 ! root 37: end of file with all top level statics occurring first before externs.
1.1 root 38:
39: 6. All undefined references are at the end of the file.
40: */
41:
42: #include "config.h"
43:
44: #ifdef SDB_DEBUGGING_INFO
45:
46: #include "tree.h"
47: #include "rtl.h"
48: #include <stdio.h>
49: #include "regs.h"
50: #include "flags.h"
51: #include "insn-config.h"
52: #include "reload.h"
53:
54: /* Mips systems use the SDB functions to dump out symbols, but
55: do not supply usable syms.h include files. */
56: #if defined(USG) && !defined(MIPS)
57: #include <syms.h>
58: /* Use T_INT if we don't have T_VOID. */
59: #ifndef T_VOID
60: #define T_VOID T_INT
61: #endif
62: #else /* not USG, or MIPS */
63: #include "gsyms.h"
64: #endif /* not USG, or MIPS */
65:
66: /* #include <storclass.h> used to be this instead of syms.h. */
67:
68: /* 1 if PARM is passed to this function in memory. */
69:
70: #define PARM_PASSED_IN_MEMORY(PARM) \
71: (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM)
72:
73: /* A C expression for the integer offset value of an automatic variable
74: (C_AUTO) having address X (an RTX). */
75: #ifndef DEBUGGER_AUTO_OFFSET
76: #define DEBUGGER_AUTO_OFFSET(X) \
77: (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
78: #endif
79:
80: /* A C expression for the integer offset value of an argument (C_ARG)
81: having address X (an RTX). The nominal offset is OFFSET. */
82: #ifndef DEBUGGER_ARG_OFFSET
83: #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
84: #endif
85:
86: /* Line number of beginning of current function, minus one.
87: Negative means not in a function or not using sdb. */
88:
89: int sdb_begin_function_line = -1;
90:
91: /* Counter to generate unique "names" for nameless struct members. */
92:
93: static int unnamed_struct_number = 0;
94:
95: extern FILE *asm_out_file;
96:
97: extern tree current_function_decl;
98:
99: void sdbout_init ();
100: void sdbout_symbol ();
101: void sdbout_types();
102:
103: static void sdbout_typedefs ();
104: static void sdbout_syms ();
105: static void sdbout_one_type ();
106: static void sdbout_queue_anonymous_type ();
1.1.1.2 root 107: static void sdbout_dequeue_anonymous_types ();
1.1 root 108: static int plain_type_1 ();
109:
110: /* Define the default sizes for various types. */
111:
112: #ifndef CHAR_TYPE_SIZE
113: #define CHAR_TYPE_SIZE BITS_PER_UNIT
114: #endif
115:
116: #ifndef SHORT_TYPE_SIZE
117: #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
118: #endif
119:
120: #ifndef INT_TYPE_SIZE
121: #define INT_TYPE_SIZE BITS_PER_WORD
122: #endif
123:
124: #ifndef LONG_TYPE_SIZE
125: #define LONG_TYPE_SIZE BITS_PER_WORD
126: #endif
127:
128: #ifndef LONG_LONG_TYPE_SIZE
129: #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
130: #endif
131:
132: #ifndef FLOAT_TYPE_SIZE
133: #define FLOAT_TYPE_SIZE BITS_PER_WORD
134: #endif
135:
136: #ifndef DOUBLE_TYPE_SIZE
137: #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
138: #endif
139:
140: #ifndef LONG_DOUBLE_TYPE_SIZE
141: #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
142: #endif
143:
144: /* Random macros describing parts of SDB data. */
145:
146: /* Put something here if lines get too long */
147: #define CONTIN
148:
149: /* Default value of delimiter is ";". */
150: #ifndef SDB_DELIM
151: #define SDB_DELIM ";"
152: #endif
153:
154: /* Maximum number of dimensions the assembler will allow. */
155: #ifndef SDB_MAX_DIM
156: #define SDB_MAX_DIM 4
157: #endif
158:
159: #ifndef PUT_SDB_SCL
160: #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM)
161: #endif
162:
163: #ifndef PUT_SDB_INT_VAL
164: #define PUT_SDB_INT_VAL(a) fprintf (asm_out_file, "\t.val\t%d%s", (a), SDB_DELIM)
165: #endif
166:
167: #ifndef PUT_SDB_VAL
168: #define PUT_SDB_VAL(a) \
169: ( fputs ("\t.val\t", asm_out_file), \
170: output_addr_const (asm_out_file, (a)), \
171: fprintf (asm_out_file, SDB_DELIM))
172: #endif
173:
174: #ifndef PUT_SDB_DEF
175: #define PUT_SDB_DEF(a) \
176: do { fprintf (asm_out_file, "\t.def\t"); \
177: ASM_OUTPUT_LABELREF (asm_out_file, a); \
178: fprintf (asm_out_file, SDB_DELIM); } while (0)
179: #endif
180:
181: #ifndef PUT_SDB_PLAIN_DEF
182: #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM)
183: #endif
184:
185: #ifndef PUT_SDB_ENDEF
186: #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file)
187: #endif
188:
189: #ifndef PUT_SDB_TYPE
190: #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM)
191: #endif
192:
193: #ifndef PUT_SDB_SIZE
194: #define PUT_SDB_SIZE(a) fprintf(asm_out_file, "\t.size\t%d%s", a, SDB_DELIM)
195: #endif
196:
197: #ifndef PUT_SDB_START_DIM
198: #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t")
199: #endif
200:
201: #ifndef PUT_SDB_NEXT_DIM
202: #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a)
203: #endif
204:
205: #ifndef PUT_SDB_LAST_DIM
206: #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM)
207: #endif
208:
209: #ifndef PUT_SDB_TAG
210: #define PUT_SDB_TAG(a) \
211: do { fprintf (asm_out_file, "\t.tag\t"); \
212: ASM_OUTPUT_LABELREF (asm_out_file, a); \
213: fprintf (asm_out_file, SDB_DELIM); } while (0)
214: #endif
215:
216: #ifndef PUT_SDB_BLOCK_START
217: #define PUT_SDB_BLOCK_START(LINE) \
218: fprintf (asm_out_file, \
219: "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
220: SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
221: #endif
222:
223: #ifndef PUT_SDB_BLOCK_END
224: #define PUT_SDB_BLOCK_END(LINE) \
225: fprintf (asm_out_file, \
226: "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \
227: SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
228: #endif
229:
230: #ifndef PUT_SDB_FUNCTION_START
231: #define PUT_SDB_FUNCTION_START(LINE) \
232: fprintf (asm_out_file, \
233: "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
234: SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
235: #endif
236:
237: #ifndef PUT_SDB_FUNCTION_END
238: #define PUT_SDB_FUNCTION_END(LINE) \
239: fprintf (asm_out_file, \
240: "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \
241: SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM)
242: #endif
243:
244: #ifndef PUT_SDB_EPILOGUE_END
245: #define PUT_SDB_EPILOGUE_END(NAME) \
246: do { fprintf (asm_out_file, "\t.def\t"); \
247: ASM_OUTPUT_LABELREF (asm_out_file, NAME); \
248: fprintf (asm_out_file, \
249: "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", \
250: SDB_DELIM, SDB_DELIM, SDB_DELIM); } while (0)
251: #endif
252:
253: #ifndef SDB_GENERATE_FAKE
254: #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
255: sprintf ((BUFFER), ".%dfake", (NUMBER));
256: #endif
257:
258: /* Return the sdb tag identifier string for TYPE
259: if TYPE has already been defined; otherwise return a null pointer. */
260:
261: #define KNOWN_TYPE_TAG(type) (char *)(TYPE_SYMTAB_ADDRESS (type))
262:
263: /* Set the sdb tag identifier string for TYPE to NAME. */
264:
265: #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \
266: (TYPE_SYMTAB_ADDRESS (TYPE) = (int)(NAME))
267:
268: /* Return the name (a string) of the struct, union or enum tag
269: described by the TREE_LIST node LINK. This is 0 for an anonymous one. */
270:
271: #define TAG_NAME(link) \
272: (((link) && TREE_PURPOSE ((link)) \
273: && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \
274: ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0)
275:
276: /* Ensure we don't output a negative line number. */
277: #define MAKE_LINE_SAFE(line) \
278: if (line <= sdb_begin_function_line) line = sdb_begin_function_line + 1
279:
280: /* Set up for SDB output at the start of compilation. */
281:
282: void
283: sdbout_init (asm_file, input_file_name, syms)
284: FILE *asm_file;
285: char *input_file_name;
286: tree syms;
287: {
288: #if 0 /* Nothing need be output for the predefined types. */
289: /* Get all permanent types that have typedef names,
290: and output them all, except for those already output. */
291:
292: sdbout_typedefs (syms);
293: #endif
294: }
295:
296: #if 0
297:
298: /* return the tag identifier for type
299: */
300:
301: char *
302: tag_of_ru_type (type,link)
303: tree type,link;
304: {
305: if (TYPE_SYMTAB_ADDRESS (type))
306: return (char *)TYPE_SYMTAB_ADDRESS (type);
307: if (link && TREE_PURPOSE (link)
308: && IDENTIFIER_POINTER (TREE_PURPOSE (link)))
309: TYPE_SYMTAB_ADDRESS (type)
310: = (int)IDENTIFIER_POINTER (TREE_PURPOSE (link));
311: else
312: return (char *) TYPE_SYMTAB_ADDRESS (type);
313: }
314: #endif
315:
316: /* Return a unique string to name an anonymous type. */
317:
318: static char *
319: gen_fake_label ()
320: {
321: char label[10];
322: char *labelstr;
323: SDB_GENERATE_FAKE (label, unnamed_struct_number);
324: unnamed_struct_number++;
325: labelstr = (char *) permalloc (strlen (label) + 1);
326: strcpy (labelstr, label);
327: return labelstr;
328: }
329:
330: /* Return the number which describes TYPE for SDB.
331: For pointers, etc., this function is recursive.
332: Each record, union or enumeral type must already have had a
333: tag number output. */
334:
335: /* The number is given by d6d5d4d3d2d1bbbb
336: where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array.
337: Thus, char *foo () has bbbb=T_CHAR
338: d1=D_FCN
339: d2=D_PTR
340: N_BTMASK= 017 1111 basic type field.
341: N_TSHIFT= 2 derived type shift
342: N_BTSHFT= 4 Basic type shift */
343:
344: /* Produce the number that describes a pointer, function or array type.
345: PREV is the number describing the target, value or element type.
346: DT_type describes how to transform that type. */
347: #define PUSH_DERIVED_LEVEL(DT_type,PREV) \
348: ((((PREV)&~N_BTMASK)<<N_TSHIFT)|(DT_type<<N_BTSHFT)|(PREV&N_BTMASK))
349:
350: /* Number of elements used in sdb_dims. */
351: static int sdb_n_dims = 0;
352:
353: /* Table of array dimensions of current type. */
354: static int sdb_dims[SDB_MAX_DIM];
355:
356: /* Size of outermost array currently being processed. */
357: static int sdb_type_size = -1;
358:
359: static int
360: plain_type (type)
361: tree type;
362: {
363: int val = plain_type_1 (type);
364:
365: /* If we have already saved up some array dimensions, print them now. */
366: if (sdb_n_dims > 0)
367: {
368: int i;
369: PUT_SDB_START_DIM;
370: for (i = sdb_n_dims - 1; i > 0; i--)
371: PUT_SDB_NEXT_DIM (sdb_dims[i]);
372: PUT_SDB_LAST_DIM (sdb_dims[0]);
373: sdb_n_dims = 0;
374:
375: sdb_type_size = int_size_in_bytes (type);
376: /* Don't kill sdb if type is not laid out or has variable size. */
377: if (sdb_type_size < 0)
378: sdb_type_size = 0;
379: }
380: /* If we have computed the size of an array containing this type,
381: print it now. */
382: if (sdb_type_size >= 0)
383: {
384: PUT_SDB_SIZE (sdb_type_size);
385: sdb_type_size = -1;
386: }
387: return val;
388: }
389:
390: static void
391: sdbout_record_type_name (type)
392: tree type;
393: {
394: char *name = 0;
395: int no_name;
396:
397: if (KNOWN_TYPE_TAG (type))
398: return;
399:
400: if (TYPE_NAME (type) != 0)
401: {
402: tree t = 0;
403: /* Find the IDENTIFIER_NODE for the type name. */
404: if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
405: {
406: t = TYPE_NAME (type);
407: }
408: #if 1 /* As a temprary hack, use typedef names for C++ only. */
409: else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
410: && TYPE_LANG_SPECIFIC (type))
411: {
412: t = DECL_NAME (TYPE_NAME (type));
413: }
414: #endif
415:
416: /* Now get the name as a string, or invent one. */
417: if (t != 0)
418: name = IDENTIFIER_POINTER (t);
419: }
420:
421: no_name = (name == 0 || *name == 0);
422: if (no_name)
423: name = gen_fake_label ();
424:
425: SET_KNOWN_TYPE_TAG (type, name);
426: #ifdef SDB_ALLOW_FORWARD_REFERENCES
427: if (no_name)
428: sdbout_queue_anonymous_type (type);
429: #endif
430: }
431:
432: static int
433: plain_type_1 (type)
434: tree type;
435: {
436: if (type == 0)
437: type = void_type_node;
438: if (type == error_mark_node)
439: type = integer_type_node;
440: type = TYPE_MAIN_VARIANT (type);
441:
442: switch (TREE_CODE (type))
443: {
444: case VOID_TYPE:
445: return T_VOID;
446: case INTEGER_TYPE:
447: {
448: int size = int_size_in_bytes (type) * BITS_PER_UNIT;
449: if (size == CHAR_TYPE_SIZE)
450: return (TREE_UNSIGNED (type) ? T_UCHAR : T_CHAR);
451: if (size == SHORT_TYPE_SIZE)
452: return (TREE_UNSIGNED (type) ? T_USHORT : T_SHORT);
453: if (size == INT_TYPE_SIZE)
454: return (TREE_UNSIGNED (type) ? T_UINT : T_INT);
455: return 0;
456: }
457:
458: case REAL_TYPE:
459: {
460: int size = int_size_in_bytes (type) * BITS_PER_UNIT;
461: if (size == FLOAT_TYPE_SIZE)
462: return T_FLOAT;
463: if (size == DOUBLE_TYPE_SIZE)
464: return T_DOUBLE;
465: return 0;
466: }
467:
468: case ARRAY_TYPE:
469: {
470: int m;
471: m = plain_type_1 (TREE_TYPE (type));
472: if (sdb_n_dims < SDB_MAX_DIM)
473: sdb_dims[sdb_n_dims++]
474: = (TYPE_DOMAIN (type)
475: ? TREE_INT_CST_LOW (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) + 1
476: : 0);
477: return PUSH_DERIVED_LEVEL (DT_ARY, m);
478: }
479:
480: case RECORD_TYPE:
481: case UNION_TYPE:
482: case ENUMERAL_TYPE:
483: {
484: char *tag;
485: #ifdef SDB_ALLOW_FORWARD_REFERENCES
486: sdbout_record_type_name (type);
487: #endif
488: #ifndef SDB_ALLOW_UNKNOWN_REFERENCES
489: if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0)
490: #ifdef SDB_ALLOW_FORWARD_REFERENCES
491: || TYPE_MODE (type) != VOIDmode
492: #endif
493: )
494: #endif
495: {
496: /* Output the referenced structure tag name
497: only if the .def has already been finished.
498: At least on 386, the Unix assembler
499: cannot handle forward references to tags. */
500: /* But the 88100, it requires them, sigh... */
501: /* And the MIPS requires unknown refs as well... */
502: tag = KNOWN_TYPE_TAG (type);
503: PUT_SDB_TAG (tag);
504: /* These 3 lines used to follow the close brace.
505: However, a size of 0 without a tag implies a tag of 0,
506: so if we don't know a tag, we can't mention the size. */
507: sdb_type_size = int_size_in_bytes (type);
508: if (sdb_type_size < 0)
509: sdb_type_size = 0;
510: }
511: return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT
512: : (TREE_CODE (type) == UNION_TYPE) ? T_UNION
513: : T_ENUM);
514: }
515: case POINTER_TYPE:
516: case REFERENCE_TYPE:
517: {
518: int m = plain_type_1 (TREE_TYPE (type));
519: return PUSH_DERIVED_LEVEL (DT_PTR, m);
520: }
521: case FUNCTION_TYPE:
522: case METHOD_TYPE:
523: {
524: int m = plain_type_1 (TREE_TYPE (type));
525: return PUSH_DERIVED_LEVEL (DT_FCN, m);
526: }
527: default:
528: return 0;
529: }
530: }
531:
532: /* Output the symbols defined in block number DO_BLOCK.
533: Set NEXT_BLOCK_NUMBER to 0 before calling.
534:
535: This function works by walking the tree structure of blocks,
536: counting blocks until it finds the desired block. */
537:
538: static int do_block = 0;
539:
540: static int next_block_number;
541:
542: static void
543: sdbout_block (block)
544: register tree block;
545: {
546: while (block)
547: {
548: /* Ignore blocks never expanded or otherwise marked as real. */
549: if (TREE_USED (block))
550: {
551: /* When we reach the specified block, output its symbols. */
552: if (next_block_number == do_block)
553: {
554: sdbout_syms (BLOCK_VARS (block));
555: }
556:
557: /* If we are past the specified block, stop the scan. */
558: if (next_block_number > do_block)
559: return;
560:
561: next_block_number++;
562:
563: /* Scan the blocks within this block. */
564: sdbout_block (BLOCK_SUBBLOCKS (block));
565: }
566:
567: block = BLOCK_CHAIN (block);
568: }
569: }
570:
571: /* Call sdbout_symbol on each decl in the chain SYMS. */
572:
573: static void
574: sdbout_syms (syms)
575: tree syms;
576: {
577: while (syms)
578: {
579: if (TREE_CODE (syms) != LABEL_DECL)
580: sdbout_symbol (syms, 1);
581: syms = TREE_CHAIN (syms);
582: }
583: }
584:
585: /* Output SDB information for a symbol described by DECL.
586: LOCAL is nonzero if the symbol is not file-scope. */
587:
588: void
589: sdbout_symbol (decl, local)
590: tree decl;
591: int local;
592: {
593: int letter = 0;
594: tree type = TREE_TYPE (decl);
595: tree context = NULL_TREE;
596: rtx value;
597: int regno = -1;
598: char *name;
599:
600: sdbout_one_type (type);
601:
1.1.1.3 ! root 602: #if 0 /* This loses when functions are marked to be ignored,
! 603: which happens in the C++ front end. */
! 604: if (DECL_IGNORED_P (decl))
! 605: return;
! 606: #endif
! 607:
1.1 root 608: switch (TREE_CODE (decl))
609: {
610: case CONST_DECL:
611: /* Enum values are defined by defining the enum type. */
612: return;
613:
614: case FUNCTION_DECL:
615: /* Don't mention a nested function under its parent. */
616: context = decl_function_context (decl);
617: if (context == current_function_decl)
618: return;
619: if (TREE_EXTERNAL (decl))
620: return;
621: if (GET_CODE (DECL_RTL (decl)) != MEM
622: || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF)
623: return;
624: PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
625: PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
626: PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT);
627: break;
628:
629: case TYPE_DECL:
630: /* Done with tagged types. */
631: if (DECL_NAME (decl) == 0)
632: return;
1.1.1.3 ! root 633: if (DECL_IGNORED_P (decl))
! 634: return;
1.1 root 635:
636: /* Output typedef name. */
637: PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl)));
638: PUT_SDB_SCL (C_TPDEF);
639: break;
640:
641: case PARM_DECL:
642: /* Parm decls go in their own separate chains
643: and are output by sdbout_reg_parms and sdbout_parms. */
644: abort ();
645:
646: case VAR_DECL:
647: /* Don't mention a variable that is external.
648: Let the file that defines it describe it. */
649: if (TREE_EXTERNAL (decl))
650: return;
651:
1.1.1.3 ! root 652: /* Ignore __FUNCTION__, etc. */
! 653: if (DECL_IGNORED_P (decl))
! 654: return;
! 655:
1.1 root 656: /* If there was an error in the declaration, don't dump core
657: if there is no RTL associated with the variable doesn't
658: exist. */
659: if (DECL_RTL (decl) == 0)
660: return;
661:
662: value = eliminate_regs (DECL_RTL (decl), 0, 0);
663:
664: /* Don't mention a variable at all
665: if it was completely optimized into nothingness.
666:
667: If DECL was from an inline function, then its rtl
668: is not identically the rtl that was used in this
669: particular compilation. */
670: if (GET_CODE (value) == REG)
671: {
672: regno = REGNO (DECL_RTL (decl));
673: if (regno >= FIRST_PSEUDO_REGISTER)
674: regno = reg_renumber[REGNO (DECL_RTL (decl))];
675: if (regno < 0)
676: return;
677: }
678: else if (GET_CODE (DECL_RTL (decl)) == SUBREG)
679: {
680: int offset = 0;
681: while (GET_CODE (value) == SUBREG)
682: {
683: offset += SUBREG_WORD (value);
684: value = SUBREG_REG (value);
685: }
686: if (GET_CODE (value) == REG)
687: {
688: regno = REGNO (value);
689: if (regno >= FIRST_PSEUDO_REGISTER)
690: regno = reg_renumber[REGNO (value)];
691: if (regno >= 0)
692: regno += offset;
693: }
694: }
695:
696: /* Emit any structure, union, or enum type that has not been output.
697: This occurs for tag-less structs (et al) used to declare variables
698: within functions. */
699: if (TREE_CODE (type) == ENUMERAL_TYPE
700: || TREE_CODE (type) == RECORD_TYPE
701: || TREE_CODE (type) == UNION_TYPE)
702: {
703: if (TYPE_SIZE (type) != 0 /* not a forward reference */
704: && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */
705: sdbout_one_type (type);
706: }
707:
708: /* Defer SDB information for top-level initialized variables! */
709: if (! local
710: && GET_CODE (value) == MEM
711: && DECL_INITIAL (decl))
712: return;
713:
714: /* Record the name for, starting a symtab entry. */
715: name = IDENTIFIER_POINTER (DECL_NAME (decl));
716:
717: if (GET_CODE (value) == MEM
718: && GET_CODE (XEXP (value, 0)) == SYMBOL_REF)
719: {
720: PUT_SDB_DEF (name);
721: if (TREE_PUBLIC (decl))
722: {
723: PUT_SDB_VAL (XEXP (value, 0));
724: PUT_SDB_SCL (C_EXT);
725: }
726: else
727: {
728: PUT_SDB_VAL (XEXP (value, 0));
729: PUT_SDB_SCL (C_STAT);
730: }
731: }
732: else if (regno >= 0)
733: {
734: PUT_SDB_DEF (name);
735: PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno));
736: PUT_SDB_SCL (C_REG);
737: }
738: else if (GET_CODE (value) == MEM
739: && (GET_CODE (XEXP (value, 0)) == MEM
740: || (GET_CODE (XEXP (value, 0)) == REG
741: && REGNO (XEXP (value, 0)) != FRAME_POINTER_REGNUM
742: && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM)))
743: /* If the value is indirect by memory or by a register
744: that isn't the frame pointer
745: then it means the object is variable-sized and address through
746: that register or stack slot. COFF has no way to represent this
747: so all we can do is output the variable as a pointer. */
748: {
749: PUT_SDB_DEF (name);
750: if (GET_CODE (XEXP (value, 0)) == REG)
751: {
752: PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0))));
753: PUT_SDB_SCL (C_REG);
754: }
755: else
756: {
757: /* DECL_RTL looks like (MEM (MEM (PLUS (REG...)
758: (CONST_INT...)))).
759: We want the value of that CONST_INT. */
760: /* Encore compiler hates a newline in a macro arg, it seems. */
761: PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
762: (XEXP (XEXP (value, 0), 0)));
763: PUT_SDB_SCL (C_AUTO);
764: }
765:
766: type = build_pointer_type (TREE_TYPE (decl));
767: }
768: else if (GET_CODE (value) == MEM
769: && GET_CODE (XEXP (value, 0)) == PLUS
770: && GET_CODE (XEXP (XEXP (value, 0), 0)) == REG
771: && GET_CODE (XEXP (XEXP (value, 0), 1)) == CONST_INT)
772: {
773: /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))).
774: We want the value of that CONST_INT. */
775: PUT_SDB_DEF (name);
776: PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0)));
777: PUT_SDB_SCL (C_AUTO);
778: }
1.1.1.2 root 779: else if (GET_CODE (value) == MEM && GET_CODE (XEXP (value, 0)) == CONST)
780: {
781: /* Handle an obscure case which can arise when optimizing and
782: when there are few available registers. (This is *always*
783: the case for i386/i486 targets). The DECL_RTL looks like
784: (MEM (CONST ...)) even though this variable is a local `auto'
785: or a local `register' variable. In effect, what has happened
786: is that the reload pass has seen that all assignments and
787: references for one such a local variable can be replaced by
788: equivalent assignments and references to some static storage
789: variable, thereby avoiding the need for a register. In such
790: cases we're forced to lie to debuggers and tell them that
791: this variable was itself `static'. */
792: PUT_SDB_DEF (name);
793: PUT_SDB_VAL (XEXP (XEXP (value, 0), 0));
794: PUT_SDB_SCL (C_STAT);
795: }
1.1 root 796: else
797: {
798: /* It is something we don't know how to represent for SDB. */
799: return;
800: }
801: break;
802: }
803: PUT_SDB_TYPE (plain_type (type));
804: PUT_SDB_ENDEF;
805: }
806:
807: /* Output SDB information for a top-level initialized variable
808: that has been delayed. */
809:
810: void
811: sdbout_toplevel_data (decl)
812: tree decl;
813: {
814: tree type = TREE_TYPE (decl);
815:
1.1.1.3 ! root 816: if (DECL_IGNORED_P (decl))
! 817: return;
! 818:
1.1 root 819: if (! (TREE_CODE (decl) == VAR_DECL
820: && GET_CODE (DECL_RTL (decl)) == MEM
821: && DECL_INITIAL (decl)))
822: abort ();
823:
824: PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
825: PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0));
826: if (TREE_PUBLIC (decl))
827: {
828: PUT_SDB_SCL (C_EXT);
829: }
830: else
831: {
832: PUT_SDB_SCL (C_STAT);
833: }
834: PUT_SDB_TYPE (plain_type (type));
835: PUT_SDB_ENDEF;
836: }
837:
838: #ifdef SDB_ALLOW_FORWARD_REFERENCES
839:
840: /* Machinery to record and output anonymous types. */
841:
842: static tree anonymous_types;
843:
844: static void
845: sdbout_queue_anonymous_type (type)
846: tree type;
847: {
848: anonymous_types = saveable_tree_cons (NULL_TREE, type, anonymous_types);
849: }
850:
851: static void
852: sdbout_dequeue_anonymous_types ()
853: {
854: register tree types, link;
855:
856: while (anonymous_types)
857: {
858: types = nreverse (anonymous_types);
859: anonymous_types = NULL_TREE;
860:
861: for (link = types; link; link = TREE_CHAIN (link))
862: {
863: register tree type = TREE_VALUE (link);
864:
1.1.1.2 root 865: if (type && ! TREE_ASM_WRITTEN (type))
1.1 root 866: sdbout_one_type (type);
867: }
868: }
869: }
870:
871: #endif
872:
873: /* Given a chain of ..._TYPE nodes, all of which have names,
874: output definitions of those names, as typedefs. */
875:
876: void
877: sdbout_types (types)
878: register tree types;
879: {
880: register tree link;
881:
882: for (link = types; link; link = TREE_CHAIN (link))
883: sdbout_one_type (link);
884:
885: #ifdef SDB_ALLOW_FORWARD_REFERENCES
886: sdbout_dequeue_anonymous_types ();
887: #endif
888: }
889:
890: static void
891: sdbout_type (type)
892: tree type;
893: {
894: register tree tem;
895: if (type == error_mark_node)
896: type = integer_type_node;
897: PUT_SDB_TYPE (plain_type (type));
898: }
899:
900: /* Output types of the fields of type TYPE, if they are structs.
901:
902: Formerly did not chase through pointer types, since that could be circular.
903: They must come before TYPE, since forward refs are not allowed.
904: Now [email protected] says to try them. */
905:
906: static void
907: sdbout_field_types (type)
908: tree type;
909: {
910: tree tail;
911: for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail))
912: if (TREE_CODE (TREE_TYPE (tail)) == POINTER_TYPE)
913: sdbout_one_type (TREE_TYPE (TREE_TYPE (tail)));
914: else
915: sdbout_one_type (TREE_TYPE (tail));
916: }
917:
918: /* Use this to put out the top level defined record and union types
919: for later reference. If this is a struct with a name, then put that
920: name out. Other unnamed structs will have .xxfake labels generated so
921: that they may be referred to later.
922: The label will be stored in the KNOWN_TYPE_TAG slot of a type.
923: It may NOT be called recursively. */
924:
925: static void
926: sdbout_one_type (type)
927: tree type;
928: {
929: text_section ();
930:
931: switch (TREE_CODE (type))
932: {
933: case RECORD_TYPE:
934: case UNION_TYPE:
935: case ENUMERAL_TYPE:
936: type = TYPE_MAIN_VARIANT (type);
937: /* Don't output a type twice. */
938: if (TREE_ASM_WRITTEN (type))
939: /* James said test TREE_ASM_BEING_WRITTEN here. */
940: return;
941:
942: /* Output nothing if type is not yet defined. */
943: if (TYPE_SIZE (type) == 0)
944: return;
945:
946: TREE_ASM_WRITTEN (type) = 1;
947: #if 1
948: /* This is reputed to cause trouble with the following case,
949: but perhaps checking TYPE_SIZE above will fix it.
950:
951: /* Here is a test case:
952:
953: struct foo {
954: struct badstr *bbb;
955: } forwardref;
956:
957: typedef struct intermediate {
958: int aaaa;
959: } intermediate_ref;
960:
961: typedef struct badstr {
962: int ccccc;
963: } badtype; */
964:
965: #if 0
966: TREE_ASM_BEING_WRITTEN (type) = 1;
967: #endif
968: /* This change, which ought to make better output,
969: used to make the COFF assembler unhappy.
970: Changes involving KNOWN_TYPE_TAG may fix the problem. */
971: /* Before really doing anything, output types we want to refer to. */
972: /* Note that in version 1 the following two lines
973: are not used if forward references are in use. */
974: if (TREE_CODE (type) != ENUMERAL_TYPE)
975: sdbout_field_types (type);
976: #if 0
977: TREE_ASM_WRITTEN (type) = 1;
978: #endif
979: #endif
980:
981: /* Output a structure type. */
982: {
983: int size = int_size_in_bytes (type);
984: int member_scl;
985: tree tem;
986: int i, n_baseclasses = 0;
987:
988: /* Record the type tag, but not in its permanent place just yet. */
989: sdbout_record_type_name (type);
990:
991: PUT_SDB_DEF (KNOWN_TYPE_TAG (type));
992:
993: switch (TREE_CODE (type))
994: {
995: case UNION_TYPE:
996: PUT_SDB_SCL (C_UNTAG);
997: PUT_SDB_TYPE (T_UNION);
998: member_scl = C_MOU;
999: break;
1000:
1001: case RECORD_TYPE:
1002: PUT_SDB_SCL (C_STRTAG);
1003: PUT_SDB_TYPE (T_STRUCT);
1004: member_scl = C_MOS;
1005: break;
1006:
1007: case ENUMERAL_TYPE:
1008: PUT_SDB_SCL (C_ENTAG);
1009: PUT_SDB_TYPE (T_ENUM);
1010: member_scl = C_MOE;
1011: break;
1012: }
1013:
1014: PUT_SDB_SIZE (size);
1015: PUT_SDB_ENDEF;
1016:
1017: /* Print out the base class information with fields
1018: named after the types they hold. */
1019: if (TYPE_BINFO (type)
1020: && TYPE_BINFO_BASETYPES (type))
1021: n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type));
1022: for (i = 0; i < n_baseclasses; i++)
1023: {
1024: tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), i);
1025: tree child_type = BINFO_TYPE (child);
1026: tree child_type_name;
1027: if (TYPE_NAME (child_type) == 0)
1028: continue;
1029: if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE)
1030: child_type_name = TYPE_NAME (child_type);
1031: else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL)
1032: child_type_name = DECL_NAME (TYPE_NAME (child_type));
1033: else
1034: continue;
1035:
1036: CONTIN;
1037: PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name));
1038: PUT_SDB_INT_VAL (TREE_INT_CST_LOW (BINFO_OFFSET (child)));
1039: PUT_SDB_SCL (member_scl);
1040: sdbout_type (BINFO_TYPE (child));
1041: PUT_SDB_ENDEF;
1042: }
1043:
1044: /* output the individual fields */
1045:
1046: if (TREE_CODE (type) == ENUMERAL_TYPE)
1047: for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1048: {
1049: PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem)));
1050: PUT_SDB_INT_VAL (TREE_INT_CST_LOW (TREE_VALUE (tem)));
1051: PUT_SDB_SCL (C_MOE);
1052: PUT_SDB_TYPE (T_MOE);
1053: PUT_SDB_ENDEF;
1054: }
1055:
1056: else /* record or union type */
1057: for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
1058: /* Output the name, type, position (in bits), size (in bits)
1059: of each field. */
1060:
1061: /* Omit here the nameless fields that are used to skip bits.
1062: Also omit fields with variable size or position.
1063: Also omit non FIELD_DECL nodes that GNU C++ may put here. */
1064: if (TREE_CODE (tem) == FIELD_DECL
1065: && DECL_NAME (tem) != 0
1066: && TREE_CODE (DECL_SIZE (tem)) == INTEGER_CST
1067: && TREE_CODE (DECL_FIELD_BITPOS (tem)) == INTEGER_CST)
1068: {
1069: CONTIN;
1070: PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (tem)));
1071: if (DECL_BIT_FIELD_TYPE (tem))
1072: {
1073: PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)));
1074: PUT_SDB_SCL (C_FIELD);
1075: sdbout_type (DECL_BIT_FIELD_TYPE (tem));
1076: PUT_SDB_SIZE (TREE_INT_CST_LOW (DECL_SIZE (tem)));
1077: }
1078: else
1079: {
1080: PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem))
1081: / BITS_PER_UNIT);
1082: PUT_SDB_SCL (member_scl);
1083: sdbout_type (TREE_TYPE (tem));
1084: }
1085: PUT_SDB_ENDEF;
1086: }
1087: /* output end of a structure,union, or enumeral definition */
1088:
1089: PUT_SDB_PLAIN_DEF ("eos");
1090: PUT_SDB_INT_VAL (size);
1091: PUT_SDB_SCL (C_EOS);
1092: PUT_SDB_TAG (KNOWN_TYPE_TAG (type));
1093: PUT_SDB_SIZE (size);
1094: PUT_SDB_ENDEF;
1095: break;
1096: }
1097: }
1098: }
1099:
1100: /* The following two functions output definitions of function parameters.
1101: Each parameter gets a definition locating it in the parameter list.
1102: Each parameter that is a register variable gets a second definition
1103: locating it in the register.
1104:
1105: Printing or argument lists in gdb uses the definitions that
1106: locate in the parameter list. But reference to the variable in
1107: expressions uses preferentially the definition as a register. */
1108:
1109: /* Output definitions, referring to storage in the parmlist,
1110: of all the parms in PARMS, which is a chain of PARM_DECL nodes. */
1111:
1112: static void
1113: sdbout_parms (parms)
1114: tree parms;
1115: {
1116: for (; parms; parms = TREE_CHAIN (parms))
1117: if (DECL_NAME (parms))
1118: {
1119: int current_sym_value = 0;
1120: char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1121:
1122: if (name == 0 || *name == 0)
1123: name = gen_fake_label ();
1124:
1125: /* Perform any necessary register eliminations on the parameter's rtl,
1126: so that the debugging output will be accurate. */
1127: DECL_INCOMING_RTL (parms) =
1128: eliminate_regs (DECL_INCOMING_RTL (parms), 0, 0);
1129: DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, 0);
1130:
1131: if (PARM_PASSED_IN_MEMORY (parms))
1132: {
1133: rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0);
1134: tree type;
1135:
1136: /* ??? Here we assume that the parm address is indexed
1137: off the frame pointer or arg pointer.
1138: If that is not true, we produce meaningless results,
1139: but do not crash. */
1140: if (GET_CODE (addr) == PLUS
1141: && GET_CODE (XEXP (addr, 1)) == CONST_INT)
1142: current_sym_value = INTVAL (XEXP (addr, 1));
1143: else
1144: current_sym_value = 0;
1145:
1146: if (GET_CODE (DECL_RTL (parms)) == REG
1147: && REGNO (DECL_RTL (parms)) >= 0
1148: && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1149: type = DECL_ARG_TYPE (parms);
1150: else
1151: {
1152: int original_sym_value = current_sym_value;
1153:
1154: /* This is the case where the parm is passed as an int or
1155: double and it is converted to a char, short or float
1156: and stored back in the parmlist. In this case, describe
1157: the parm with the variable's declared type, and adjust
1158: the address if the least significant bytes (which we are
1159: using) are not the first ones. */
1160: #if BYTES_BIG_ENDIAN
1161: if (TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1162: current_sym_value +=
1163: (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1164: - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1165: #endif
1166: if (GET_CODE (DECL_RTL (parms)) == MEM
1167: && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1168: && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1169: == CONST_INT)
1170: && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1))
1171: == current_sym_value))
1172: type = TREE_TYPE (parms);
1173: else
1174: {
1175: current_sym_value = original_sym_value;
1176: type = DECL_ARG_TYPE (parms);
1177: }
1178: }
1179:
1180: PUT_SDB_DEF (name);
1181: PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr));
1182: PUT_SDB_SCL (C_ARG);
1183: PUT_SDB_TYPE (plain_type (type));
1184: PUT_SDB_ENDEF;
1185: }
1186: else if (GET_CODE (DECL_RTL (parms)) == REG)
1187: {
1188: rtx best_rtl;
1189: /* Parm passed in registers and lives in registers or nowhere. */
1190:
1191: /* If parm lives in a register, use that register;
1192: pretend the parm was passed there. It would be more consistent
1193: to describe the register where the parm was passed,
1194: but in practice that register usually holds something else. */
1195: if (REGNO (DECL_RTL (parms)) >= 0
1196: && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
1197: best_rtl = DECL_RTL (parms);
1198: /* If the parm lives nowhere,
1199: use the register where it was passed. */
1200: else
1201: best_rtl = DECL_INCOMING_RTL (parms);
1202:
1203: PUT_SDB_DEF (name);
1204: PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl)));
1205: PUT_SDB_SCL (C_REGPARM);
1206: PUT_SDB_TYPE (plain_type (TREE_TYPE (parms), 0));
1207: PUT_SDB_ENDEF;
1208: }
1209: else if (GET_CODE (DECL_RTL (parms)) == MEM
1210: && XEXP (DECL_RTL (parms), 0) != const0_rtx)
1211: {
1212: /* Parm was passed in registers but lives on the stack. */
1213:
1214: /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
1215: in which case we want the value of that CONST_INT,
1216: or (MEM (REG ...)) or (MEM (MEM ...)),
1217: in which case we use a value of zero. */
1218: if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG
1219: || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM)
1220: current_sym_value = 0;
1221: else
1222: current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1));
1223:
1224: /* Again, this assumes the offset is based on the arg pointer. */
1225: PUT_SDB_DEF (name);
1226: PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value,
1227: XEXP (DECL_RTL (parms), 0)));
1228: PUT_SDB_SCL (C_ARG);
1229: PUT_SDB_TYPE (plain_type (TREE_TYPE (parms), 0));
1230: PUT_SDB_ENDEF;
1231: }
1232: }
1233: }
1234:
1235: /* Output definitions for the places where parms live during the function,
1236: when different from where they were passed, when the parms were passed
1237: in memory.
1238:
1239: It is not useful to do this for parms passed in registers
1240: that live during the function in different registers, because it is
1241: impossible to look in the passed register for the passed value,
1242: so we use the within-the-function register to begin with.
1243:
1244: PARMS is a chain of PARM_DECL nodes. */
1245:
1246: static void
1247: sdbout_reg_parms (parms)
1248: tree parms;
1249: {
1250: for (; parms; parms = TREE_CHAIN (parms))
1251: if (DECL_NAME (parms))
1252: {
1253: char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
1254:
1255: /* Report parms that live in registers during the function
1256: but were passed in memory. */
1257: if (GET_CODE (DECL_RTL (parms)) == REG
1258: && REGNO (DECL_RTL (parms)) >= 0
1259: && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER
1260: && PARM_PASSED_IN_MEMORY (parms))
1261: {
1262: if (name == 0 || *name == 0)
1263: name = gen_fake_label ();
1264: PUT_SDB_DEF (name);
1265: PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms))));
1266: PUT_SDB_SCL (C_REG);
1267: PUT_SDB_TYPE (plain_type (TREE_TYPE (parms), 0));
1268: PUT_SDB_ENDEF;
1269: }
1270: /* Report parms that live in memory but not where they were passed. */
1271: else if (GET_CODE (DECL_RTL (parms)) == MEM
1272: && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS
1273: && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT
1274: && PARM_PASSED_IN_MEMORY (parms)
1275: && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms)))
1276: {
1277: #if 0 /* ??? It is not clear yet what should replace this. */
1278: int offset = DECL_OFFSET (parms) / BITS_PER_UNIT;
1279: /* A parm declared char is really passed as an int,
1280: so it occupies the least significant bytes.
1281: On a big-endian machine those are not the low-numbered ones. */
1282: #if BYTES_BIG_ENDIAN
1283: if (offset != -1 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
1284: offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
1285: - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
1286: #endif
1287: if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...}
1288: #endif
1289: {
1290: if (name == 0 || *name == 0)
1291: name = gen_fake_label ();
1292: PUT_SDB_DEF (name);
1293: PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
1294: (XEXP (DECL_RTL (parms), 0)));
1295: PUT_SDB_SCL (C_AUTO);
1296: PUT_SDB_TYPE (plain_type (TREE_TYPE (parms)));
1297: PUT_SDB_ENDEF;
1298: }
1299: }
1300: }
1301: }
1302:
1303: /* Describe the beginning of an internal block within a function.
1304: Also output descriptions of variables defined in this block.
1305:
1306: N is the number of the block, by order of beginning, counting from 1,
1307: and not counting the outermost (function top-level) block.
1308: The blocks match the BLOCKs in DECL_INITIAL (current_function_decl),
1309: if the count starts at 0 for the outermost one. */
1310:
1311: void
1312: sdbout_begin_block (file, line, n)
1313: FILE *file;
1314: int line;
1315: int n;
1316: {
1317: tree decl = current_function_decl;
1318: MAKE_LINE_SAFE (line);
1319: PUT_SDB_BLOCK_START (line - sdb_begin_function_line);
1320: if (n == 1)
1321: {
1322: /* Include the outermost BLOCK's variables in block 1. */
1323: next_block_number = 0;
1324: do_block = 0;
1325: sdbout_block (DECL_INITIAL (decl));
1326: }
1327: /* If -g1, suppress all the internal symbols of functions
1328: except for arguments. */
1329: if (debug_info_level != DINFO_LEVEL_TERSE)
1330: {
1331: next_block_number = 0;
1332: do_block = n;
1333: sdbout_block (DECL_INITIAL (decl));
1334: }
1335:
1336: #ifdef SDB_ALLOW_FORWARD_REFERENCES
1337: sdbout_dequeue_anonymous_types ();
1338: #endif
1339: }
1340:
1341: /* Describe the end line-number of an internal block within a function. */
1342:
1343: void
1344: sdbout_end_block (file, line)
1345: FILE *file;
1346: int line;
1347: {
1348: MAKE_LINE_SAFE (line);
1349: PUT_SDB_BLOCK_END (line - sdb_begin_function_line);
1350: }
1351:
1352: /* Output sdb info for the current function name.
1353: Called from assemble_start_function. */
1354:
1355: void
1356: sdbout_mark_begin_function ()
1357: {
1358: sdbout_symbol (current_function_decl, 0);
1359: }
1360:
1361: /* Called at beginning of function body (after prologue).
1362: Record the function's starting line number, so we can output
1363: relative line numbers for the other lines.
1364: Describe beginning of outermost block.
1365: Also describe the parameter list. */
1366:
1367: void
1368: sdbout_begin_function (line)
1369: int line;
1370: {
1371: sdb_begin_function_line = line - 1;
1372: PUT_SDB_FUNCTION_START (line);
1373: sdbout_parms (DECL_ARGUMENTS (current_function_decl));
1374: sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl));
1375: }
1376:
1377: /* Called at end of function (before epilogue).
1378: Describe end of outermost block. */
1379:
1380: void
1381: sdbout_end_function (line)
1382: int line;
1383: {
1384: #ifdef SDB_ALLOW_FORWARD_REFERENCES
1385: sdbout_dequeue_anonymous_types ();
1386: #endif
1387:
1388: MAKE_LINE_SAFE (line);
1389: PUT_SDB_FUNCTION_END (line - sdb_begin_function_line);
1390:
1391: /* Indicate we are between functions, for line-number output. */
1392: sdb_begin_function_line = -1;
1393: }
1394:
1395: /* Output sdb info for the absolute end of a function.
1396: Called after the epilogue is output. */
1397:
1398: void
1399: sdbout_end_epilogue ()
1400: {
1401: char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl));
1402: PUT_SDB_EPILOGUE_END (name);
1403: }
1404:
1405: /* Output sdb info for the given label. Called only if LABEL_NAME (insn)
1406: is present. */
1407:
1408: void
1409: sdbout_label (insn)
1410: register rtx insn;
1411: {
1412: PUT_SDB_DEF (LABEL_NAME (insn));
1413: PUT_SDB_VAL (insn);
1414: PUT_SDB_SCL (C_LABEL);
1415: PUT_SDB_TYPE (T_NULL);
1416: PUT_SDB_ENDEF;
1417: }
1418:
1419: #endif /* SDB_DEBUGGING_INFO */
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