2 * File dwarf.c - read dwarf2 information from the ELF modules
4 * Copyright (C) 2005, Raphael Junqueira
5 * Copyright (C) 2006-2011, Eric Pouech
6 * Copyright (C) 2010, Alexandre Julliard
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 #define NONAMELESSUNION
25 #include <sys/types.h>
40 #include "dbghelp_private.h"
41 #include "image_private.h"
43 #include "wine/debug.h"
45 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp_dwarf
);
49 * o unspecified parameters
51 * o Debug{Start|End}Point
54 * o proper types loading (nesting)
58 static void dump(const void* ptr
, unsigned len
)
62 static const char hexof
[] = "0123456789abcdef";
65 for (i
= 0; i
< len
; i
+= 16)
67 sprintf(msg
, "%08x: ", i
);
68 memset(msg
+ 10, ' ', 3 * 16 + 1 + 16);
69 for (j
= 0; j
< min(16, len
- i
); j
++)
71 msg
[10 + 3 * j
+ 0] = hexof
[x
[i
+ j
] >> 4];
72 msg
[10 + 3 * j
+ 1] = hexof
[x
[i
+ j
] & 15];
73 msg
[10 + 3 * j
+ 2] = ' ';
74 msg
[10 + 3 * 16 + 1 + j
] = (x
[i
+ j
] >= 0x20 && x
[i
+ j
] < 0x7f) ?
77 msg
[10 + 3 * 16] = ' ';
78 msg
[10 + 3 * 16 + 1 + 16] = '\0';
87 * http://www.eagercon.com/dwarf/dwarf3std.htm
88 * http://www.eagercon.com/dwarf/dwarf-2.0.0.pdf
90 * dwarf2.h: http://www.hakpetzna.com/b/binutils/dwarf2_8h-source.html
92 * example of projects who do dwarf2 parsing:
93 * http://www.x86-64.org/cgi-bin/cvsweb.cgi/binutils.dead/binutils/readelf.c?rev=1.1.1.2
94 * http://elis.ugent.be/diota/log/ltrace_elf.c
102 typedef struct dwarf2_abbrev_entry_attr_s
106 struct dwarf2_abbrev_entry_attr_s
* next
;
107 } dwarf2_abbrev_entry_attr_t
;
109 typedef struct dwarf2_abbrev_entry_s
111 ULONG_PTR entry_code
;
113 unsigned char have_child
;
115 dwarf2_abbrev_entry_attr_t
* attrs
;
116 } dwarf2_abbrev_entry_t
;
121 const unsigned char* ptr
;
127 enum {attr_direct
, attr_abstract_origin
, attr_specification
} gotten_from
;
134 struct dwarf2_block block
;
136 const struct dwarf2_debug_info_s
* debug_info
;
139 typedef struct dwarf2_debug_info_s
141 const dwarf2_abbrev_entry_t
*abbrev
;
143 const unsigned char** data
;
144 struct vector children
;
145 struct dwarf2_debug_info_s
* parent
;
146 struct dwarf2_parse_context_s
* unit_ctx
;
147 } dwarf2_debug_info_t
;
149 typedef struct dwarf2_section_s
152 const unsigned char* address
;
157 enum dwarf2_sections
{section_debug
, section_string
, section_abbrev
, section_line
, section_ranges
, section_max
};
159 typedef struct dwarf2_traverse_context_s
161 const unsigned char* data
;
162 const unsigned char* end_data
;
163 } dwarf2_traverse_context_t
;
165 /* symt_cache indexes */
170 typedef struct dwarf2_cuhead_s
172 unsigned char word_size
; /* size of a word on target machine */
173 unsigned char version
;
174 unsigned char offset_size
; /* size of offset inside DWARF */
177 typedef struct dwarf2_parse_module_context_s
179 ULONG_PTR load_offset
;
180 const dwarf2_section_t
* sections
;
181 struct module
* module
;
182 const struct elf_thunk_area
*thunks
;
183 struct symt
* symt_cache
[sc_num
]; /* void, unknown */
184 struct vector unit_contexts
;
185 struct dwarf2_dwz_alternate_s
* dwz
;
187 } dwarf2_parse_module_context_t
;
189 typedef struct dwarf2_dwz_alternate_s
191 struct image_file_map
* fmap
;
192 dwarf2_section_t sections
[section_max
];
193 struct image_section_map sectmap
[section_max
];
194 dwarf2_parse_module_context_t module_ctx
;
195 } dwarf2_dwz_alternate_t
;
206 /* this is the context used for parsing a compilation unit
207 * inside an ELF/PE section (likely .debug_info)
209 typedef struct dwarf2_parse_context_s
211 dwarf2_parse_module_context_t
* module_ctx
;
214 struct symt_compiland
* compiland
;
215 struct sparse_array abbrev_table
;
216 struct sparse_array debug_info_table
;
217 ULONG_PTR ref_offset
;
219 dwarf2_cuhead_t head
;
220 enum unit_status status
;
221 dwarf2_traverse_context_t traverse_DIE
;
222 } dwarf2_parse_context_t
;
224 /* stored in the dbghelp's module internal structure for later reuse */
225 struct dwarf2_module_info_s
227 dwarf2_cuhead_t
** cuheads
;
228 unsigned num_cuheads
;
229 dwarf2_section_t debug_loc
;
230 dwarf2_section_t debug_frame
;
231 dwarf2_section_t eh_frame
;
232 unsigned char word_size
;
235 #define loc_dwarf2_location_list (loc_user + 0)
236 #define loc_dwarf2_block (loc_user + 1)
237 #define loc_dwarf2_frame_cfa (loc_user + 2)
239 /* forward declarations */
240 static struct symt
* dwarf2_parse_enumeration_type(dwarf2_debug_info_t
* entry
);
241 static BOOL
dwarf2_parse_compilation_unit(dwarf2_parse_context_t
* ctx
);
242 static dwarf2_parse_context_t
* dwarf2_locate_cu(dwarf2_parse_module_context_t
* module_ctx
, ULONG_PTR ref
);
244 static unsigned char dwarf2_get_byte(const unsigned char* ptr
)
249 static unsigned char dwarf2_parse_byte(dwarf2_traverse_context_t
* ctx
)
251 unsigned char uvalue
= dwarf2_get_byte(ctx
->data
);
256 static unsigned short dwarf2_get_u2(const unsigned char* ptr
)
258 return *(const UINT16
*)ptr
;
261 static unsigned short dwarf2_parse_u2(dwarf2_traverse_context_t
* ctx
)
263 unsigned short uvalue
= dwarf2_get_u2(ctx
->data
);
268 static ULONG_PTR
dwarf2_get_u4(const unsigned char* ptr
)
270 return *(const UINT32
*)ptr
;
273 static ULONG_PTR
dwarf2_parse_u4(dwarf2_traverse_context_t
* ctx
)
275 ULONG_PTR uvalue
= dwarf2_get_u4(ctx
->data
);
280 static DWORD64
dwarf2_get_u8(const unsigned char* ptr
)
282 return *(const UINT64
*)ptr
;
285 static DWORD64
dwarf2_parse_u8(dwarf2_traverse_context_t
* ctx
)
287 DWORD64 uvalue
= dwarf2_get_u8(ctx
->data
);
292 static ULONG_PTR
dwarf2_get_leb128_as_unsigned(const unsigned char* ptr
, const unsigned char** end
)
300 byte
= dwarf2_get_byte(ptr
++);
301 ret
|= (byte
& 0x7f) << shift
;
303 } while (byte
& 0x80);
309 static ULONG_PTR
dwarf2_leb128_as_unsigned(dwarf2_traverse_context_t
* ctx
)
315 ret
= dwarf2_get_leb128_as_unsigned(ctx
->data
, &ctx
->data
);
320 static LONG_PTR
dwarf2_get_leb128_as_signed(const unsigned char* ptr
, const unsigned char** end
)
325 const unsigned size
= sizeof(int) * 8;
329 byte
= dwarf2_get_byte(ptr
++);
330 ret
|= (byte
& 0x7f) << shift
;
332 } while (byte
& 0x80);
335 /* as spec: sign bit of byte is 2nd high order bit (80x40)
336 * -> 0x80 is used as flag.
338 if ((shift
< size
) && (byte
& 0x40))
340 ret
|= - (1 << shift
);
345 static LONG_PTR
dwarf2_leb128_as_signed(dwarf2_traverse_context_t
* ctx
)
351 ret
= dwarf2_get_leb128_as_signed(ctx
->data
, &ctx
->data
);
355 static unsigned dwarf2_leb128_length(const dwarf2_traverse_context_t
* ctx
)
358 for (ret
= 0; ctx
->data
[ret
] & 0x80; ret
++);
362 /******************************************************************
365 * Returns an address.
366 * We assume that in all cases word size from Dwarf matches the size of
367 * addresses in platform where the exec is compiled.
369 static ULONG_PTR
dwarf2_get_addr(const unsigned char* ptr
, unsigned word_size
)
376 ret
= dwarf2_get_u4(ptr
);
379 ret
= dwarf2_get_u8(ptr
);
382 FIXME("Unsupported Word Size %u\n", word_size
);
388 static inline ULONG_PTR
dwarf2_parse_addr(dwarf2_traverse_context_t
* ctx
, unsigned word_size
)
390 ULONG_PTR ret
= dwarf2_get_addr(ctx
->data
, word_size
);
391 ctx
->data
+= word_size
;
395 static inline ULONG_PTR
dwarf2_parse_addr_head(dwarf2_traverse_context_t
* ctx
, const dwarf2_cuhead_t
* head
)
397 return dwarf2_parse_addr(ctx
, head
->word_size
);
400 static ULONG_PTR
dwarf2_parse_offset(dwarf2_traverse_context_t
* ctx
, unsigned char offset_size
)
402 ULONG_PTR ret
= dwarf2_get_addr(ctx
->data
, offset_size
);
403 ctx
->data
+= offset_size
;
407 static ULONG_PTR
dwarf2_parse_3264(dwarf2_traverse_context_t
* ctx
, unsigned char* ofsz
)
409 ULONG_PTR ret
= dwarf2_parse_u4(ctx
);
410 if (ret
== 0xffffffff)
412 ret
= dwarf2_parse_u8(ctx
);
419 static const char* dwarf2_debug_traverse_ctx(const dwarf2_traverse_context_t
* ctx
)
421 return wine_dbg_sprintf("ctx(%p)", ctx
->data
);
424 static const char* dwarf2_debug_unit_ctx(const dwarf2_parse_context_t
* ctx
)
426 return wine_dbg_sprintf("ctx(%p,%s)",
427 ctx
, debugstr_w(ctx
->module_ctx
->module
->modulename
));
430 static const char* dwarf2_debug_di(const dwarf2_debug_info_t
* di
)
432 return wine_dbg_sprintf("debug_info(abbrev:%p,symt:%p) in %s",
433 di
->abbrev
, di
->symt
, dwarf2_debug_unit_ctx(di
->unit_ctx
));
436 static dwarf2_abbrev_entry_t
*
437 dwarf2_abbrev_table_find_entry(const struct sparse_array
* abbrev_table
,
438 ULONG_PTR entry_code
)
440 assert( NULL
!= abbrev_table
);
441 return sparse_array_find(abbrev_table
, entry_code
);
444 static void dwarf2_parse_abbrev_set(dwarf2_traverse_context_t
* abbrev_ctx
,
445 struct sparse_array
* abbrev_table
,
448 ULONG_PTR entry_code
;
449 dwarf2_abbrev_entry_t
* abbrev_entry
;
450 dwarf2_abbrev_entry_attr_t
* new = NULL
;
451 dwarf2_abbrev_entry_attr_t
* last
= NULL
;
455 assert( NULL
!= abbrev_ctx
);
457 TRACE("%s, end at %p\n",
458 dwarf2_debug_traverse_ctx(abbrev_ctx
), abbrev_ctx
->end_data
);
460 sparse_array_init(abbrev_table
, sizeof(dwarf2_abbrev_entry_t
), 32);
461 while (abbrev_ctx
->data
< abbrev_ctx
->end_data
)
463 TRACE("now at %s\n", dwarf2_debug_traverse_ctx(abbrev_ctx
));
464 entry_code
= dwarf2_leb128_as_unsigned(abbrev_ctx
);
465 TRACE("found entry_code %lu\n", entry_code
);
468 TRACE("NULL entry code at %s\n", dwarf2_debug_traverse_ctx(abbrev_ctx
));
471 abbrev_entry
= sparse_array_add(abbrev_table
, entry_code
, pool
);
472 assert( NULL
!= abbrev_entry
);
474 abbrev_entry
->entry_code
= entry_code
;
475 abbrev_entry
->tag
= dwarf2_leb128_as_unsigned(abbrev_ctx
);
476 abbrev_entry
->have_child
= dwarf2_parse_byte(abbrev_ctx
);
477 abbrev_entry
->attrs
= NULL
;
478 abbrev_entry
->num_attr
= 0;
480 TRACE("table:(%p,#%u) entry_code(%lu) tag(0x%lx) have_child(%u) -> %p\n",
481 abbrev_table
, sparse_array_length(abbrev_table
),
482 entry_code
, abbrev_entry
->tag
, abbrev_entry
->have_child
, abbrev_entry
);
487 attribute
= dwarf2_leb128_as_unsigned(abbrev_ctx
);
488 form
= dwarf2_leb128_as_unsigned(abbrev_ctx
);
489 if (!attribute
) break;
491 new = pool_alloc(pool
, sizeof(dwarf2_abbrev_entry_attr_t
));
494 new->attribute
= attribute
;
497 if (abbrev_entry
->attrs
) last
->next
= new;
498 else abbrev_entry
->attrs
= new;
500 abbrev_entry
->num_attr
++;
503 TRACE("found %u entries\n", sparse_array_length(abbrev_table
));
506 static void dwarf2_swallow_attribute(dwarf2_traverse_context_t
* ctx
,
507 const dwarf2_cuhead_t
* head
,
508 const dwarf2_abbrev_entry_attr_t
* abbrev_attr
)
512 TRACE("(attr:0x%lx,form:0x%lx)\n", abbrev_attr
->attribute
, abbrev_attr
->form
);
514 switch (abbrev_attr
->form
)
516 case DW_FORM_flag_present
: step
= 0; break;
517 case DW_FORM_ref_addr
: step
= (head
->version
>= 3) ? head
->offset_size
: head
->word_size
; break;
518 case DW_FORM_addr
: step
= head
->word_size
; break;
521 case DW_FORM_ref1
: step
= 1; break;
523 case DW_FORM_ref2
: step
= 2; break;
525 case DW_FORM_ref4
: step
= 4; break;
527 case DW_FORM_ref8
: step
= 8; break;
529 case DW_FORM_ref_udata
:
530 case DW_FORM_udata
: step
= dwarf2_leb128_length(ctx
); break;
531 case DW_FORM_string
: step
= strlen((const char*)ctx
->data
) + 1; break;
532 case DW_FORM_exprloc
:
533 case DW_FORM_block
: step
= dwarf2_leb128_as_unsigned(ctx
); break;
534 case DW_FORM_block1
: step
= dwarf2_parse_byte(ctx
); break;
535 case DW_FORM_block2
: step
= dwarf2_parse_u2(ctx
); break;
536 case DW_FORM_block4
: step
= dwarf2_parse_u4(ctx
); break;
537 case DW_FORM_sec_offset
:
538 case DW_FORM_GNU_ref_alt
:
539 case DW_FORM_GNU_strp_alt
:
540 case DW_FORM_strp
: step
= head
->offset_size
; break;
542 FIXME("Unhandled attribute form %lx\n", abbrev_attr
->form
);
548 static BOOL
dwarf2_fill_attr(const dwarf2_parse_context_t
* ctx
,
549 const dwarf2_abbrev_entry_attr_t
* abbrev_attr
,
550 const unsigned char* data
,
551 struct attribute
* attr
)
553 attr
->form
= abbrev_attr
->form
;
556 case DW_FORM_ref_addr
:
557 if (ctx
->head
.version
>= 3)
558 attr
->u
.uvalue
= dwarf2_get_addr(data
, ctx
->head
.offset_size
);
560 attr
->u
.uvalue
= dwarf2_get_addr(data
, ctx
->head
.word_size
);
561 TRACE("addr<0x%lx>\n", attr
->u
.uvalue
);
565 attr
->u
.uvalue
= dwarf2_get_addr(data
, ctx
->head
.word_size
);
566 TRACE("addr<0x%lx>\n", attr
->u
.uvalue
);
570 attr
->u
.uvalue
= dwarf2_get_byte(data
);
571 TRACE("flag<0x%lx>\n", attr
->u
.uvalue
);
574 case DW_FORM_flag_present
:
576 TRACE("flag_present\n");
580 attr
->u
.uvalue
= dwarf2_get_byte(data
);
581 TRACE("data1<%lu>\n", attr
->u
.uvalue
);
585 attr
->u
.uvalue
= dwarf2_get_u2(data
);
586 TRACE("data2<%lu>\n", attr
->u
.uvalue
);
590 attr
->u
.uvalue
= dwarf2_get_u4(data
);
591 TRACE("data4<%lu>\n", attr
->u
.uvalue
);
595 attr
->u
.lluvalue
= dwarf2_get_u8(data
);
596 TRACE("data8<%s>\n", wine_dbgstr_longlong(attr
->u
.uvalue
));
600 attr
->u
.uvalue
= ctx
->ref_offset
+ dwarf2_get_byte(data
);
601 TRACE("ref1<0x%lx>\n", attr
->u
.uvalue
);
605 attr
->u
.uvalue
= ctx
->ref_offset
+ dwarf2_get_u2(data
);
606 TRACE("ref2<0x%lx>\n", attr
->u
.uvalue
);
610 attr
->u
.uvalue
= ctx
->ref_offset
+ dwarf2_get_u4(data
);
611 TRACE("ref4<0x%lx>\n", attr
->u
.uvalue
);
615 FIXME("Unhandled 64-bit support\n");
619 attr
->u
.svalue
= dwarf2_get_leb128_as_signed(data
, NULL
);
622 case DW_FORM_ref_udata
:
623 attr
->u
.uvalue
= ctx
->ref_offset
+ dwarf2_get_leb128_as_unsigned(data
, NULL
);
624 TRACE("ref_udata<0x%lx>\n", attr
->u
.uvalue
);
628 attr
->u
.uvalue
= dwarf2_get_leb128_as_unsigned(data
, NULL
);
629 TRACE("udata<0x%lx>\n", attr
->u
.uvalue
);
633 attr
->u
.string
= (const char *)data
;
634 TRACE("string<%s>\n", debugstr_a(attr
->u
.string
));
639 ULONG_PTR ofs
= dwarf2_get_addr(data
, ctx
->head
.offset_size
);
640 if (ofs
>= ctx
->module_ctx
->sections
[section_string
].size
)
642 ERR("Out of bounds string offset (%08lx)\n", ofs
);
643 attr
->u
.string
= "<<outofbounds-strp>>";
647 attr
->u
.string
= (const char*)ctx
->module_ctx
->sections
[section_string
].address
+ ofs
;
648 TRACE("strp<%s>\n", debugstr_a(attr
->u
.string
));
654 case DW_FORM_exprloc
:
655 attr
->u
.block
.size
= dwarf2_get_leb128_as_unsigned(data
, &attr
->u
.block
.ptr
);
656 TRACE("block<%p,%u>\n", attr
->u
.block
.ptr
, attr
->u
.block
.size
);
660 attr
->u
.block
.size
= dwarf2_get_byte(data
);
661 attr
->u
.block
.ptr
= data
+ 1;
662 TRACE("block<%p,%u>\n", attr
->u
.block
.ptr
, attr
->u
.block
.size
);
666 attr
->u
.block
.size
= dwarf2_get_u2(data
);
667 attr
->u
.block
.ptr
= data
+ 2;
668 TRACE("block<%p,%u>\n", attr
->u
.block
.ptr
, attr
->u
.block
.size
);
672 attr
->u
.block
.size
= dwarf2_get_u4(data
);
673 attr
->u
.block
.ptr
= data
+ 4;
674 TRACE("block<%p,%u>\n", attr
->u
.block
.ptr
, attr
->u
.block
.size
);
677 case DW_FORM_sec_offset
:
678 attr
->u
.lluvalue
= dwarf2_get_addr(data
, ctx
->head
.offset_size
);
679 TRACE("sec_offset<%s>\n", wine_dbgstr_longlong(attr
->u
.lluvalue
));
682 case DW_FORM_GNU_ref_alt
:
683 if (!ctx
->module_ctx
->dwz
)
685 ERR("No DWZ file present for GNU_ref_alt in %s\n", debugstr_w(ctx
->module_ctx
->module
->modulename
));
689 attr
->u
.uvalue
= dwarf2_get_addr(data
, ctx
->head
.offset_size
);
690 TRACE("ref_alt<0x%lx>\n", attr
->u
.uvalue
);
693 case DW_FORM_GNU_strp_alt
:
694 if (ctx
->module_ctx
->dwz
)
696 ULONG_PTR ofs
= dwarf2_get_addr(data
, ctx
->head
.offset_size
);
697 if (ofs
< ctx
->module_ctx
->dwz
->sections
[section_string
].size
)
699 attr
->u
.string
= (const char*)ctx
->module_ctx
->dwz
->sections
[section_string
].address
+ ofs
;
700 TRACE("strp_alt<%s>\n", debugstr_a(attr
->u
.string
));
704 ERR("out of bounds strp_alt: 0x%lx 0x%x (%u)\n", ofs
, ctx
->module_ctx
->dwz
->sections
[section_string
].size
, ctx
->head
.offset_size
);
705 attr
->u
.string
= "<<outofbounds-strpalt>>";
710 ERR("No DWZ file present for GNU_strp_alt in %s\n", debugstr_w(ctx
->module_ctx
->module
->modulename
));
711 attr
->u
.string
= "<<noDWZ-strpalt>>";
716 FIXME("Unhandled attribute form %lx\n", abbrev_attr
->form
);
722 static dwarf2_debug_info_t
* dwarf2_jump_to_debug_info(struct attribute
* attr
);
724 static BOOL
dwarf2_find_attribute(const dwarf2_debug_info_t
* di
,
725 unsigned at
, struct attribute
* attr
)
727 unsigned i
, refidx
= 0;
728 dwarf2_abbrev_entry_attr_t
* abbrev_attr
;
729 dwarf2_abbrev_entry_attr_t
* ref_abbrev_attr
= NULL
;
731 attr
->gotten_from
= attr_direct
;
734 ref_abbrev_attr
= NULL
;
735 attr
->debug_info
= di
;
736 for (i
= 0, abbrev_attr
= di
->abbrev
->attrs
; abbrev_attr
; i
++, abbrev_attr
= abbrev_attr
->next
)
738 if (abbrev_attr
->attribute
== at
)
740 return dwarf2_fill_attr(di
->unit_ctx
, abbrev_attr
, di
->data
[i
], attr
);
742 if ((abbrev_attr
->attribute
== DW_AT_abstract_origin
||
743 abbrev_attr
->attribute
== DW_AT_specification
) &&
747 FIXME("two references %lx and %lx\n", ref_abbrev_attr
->attribute
, abbrev_attr
->attribute
);
748 ref_abbrev_attr
= abbrev_attr
;
750 attr
->gotten_from
= (abbrev_attr
->attribute
== DW_AT_abstract_origin
) ?
751 attr_abstract_origin
: attr_specification
;
754 /* do we have either an abstract origin or a specification debug entry to look into ? */
755 if (!ref_abbrev_attr
|| !dwarf2_fill_attr(di
->unit_ctx
, ref_abbrev_attr
, di
->data
[refidx
], attr
))
757 if (!(di
= dwarf2_jump_to_debug_info(attr
)))
759 FIXME("Should have found the debug info entry\n");
766 static dwarf2_debug_info_t
* dwarf2_jump_to_debug_info(struct attribute
* attr
)
768 dwarf2_parse_context_t
* ref_ctx
= NULL
;
769 BOOL with_other
= TRUE
;
770 dwarf2_debug_info_t
* ret
;
774 case DW_FORM_ref_addr
:
775 ref_ctx
= dwarf2_locate_cu(attr
->debug_info
->unit_ctx
->module_ctx
, attr
->u
.uvalue
);
777 case DW_FORM_GNU_ref_alt
:
778 if (attr
->debug_info
->unit_ctx
->module_ctx
->dwz
)
779 ref_ctx
= dwarf2_locate_cu(&attr
->debug_info
->unit_ctx
->module_ctx
->dwz
->module_ctx
, attr
->u
.uvalue
);
783 ref_ctx
= attr
->debug_info
->unit_ctx
;
786 if (!ref_ctx
) return FALSE
;
787 /* There are cases where we end up with a circular reference between two (or more)
788 * compilation units. Before this happens, try to see if we can refer to an already
789 * loaded debug_info in the target compilation unit (even if all the debug_info
790 * haven't been loaded yet).
792 if (ref_ctx
->status
== UNIT_BEINGLOADED
&&
793 (ret
= sparse_array_find(&ref_ctx
->debug_info_table
, attr
->u
.uvalue
)))
797 /* ensure CU is fully loaded */
798 if (ref_ctx
!= attr
->debug_info
->unit_ctx
&& !dwarf2_parse_compilation_unit(ref_ctx
))
801 return sparse_array_find(&ref_ctx
->debug_info_table
, attr
->u
.uvalue
);
804 static void dwarf2_load_one_entry(dwarf2_debug_info_t
*);
806 #define Wine_DW_no_register 0x7FFFFFFF
808 static unsigned dwarf2_map_register(int regno
, const struct module
* module
)
810 if (regno
== Wine_DW_no_register
)
812 FIXME("What the heck map reg 0x%x\n",regno
);
815 return dbghelp_current_cpu
->map_dwarf_register(regno
, module
, FALSE
);
818 static enum location_error
819 compute_location(const struct module
*module
, const dwarf2_cuhead_t
* head
,
820 dwarf2_traverse_context_t
* ctx
, struct location
* loc
,
821 HANDLE hproc
, const struct location
* frame
)
823 DWORD_PTR tmp
, stack
[64];
826 BOOL piece_found
= FALSE
;
830 loc
->kind
= loc_absolute
;
831 loc
->reg
= Wine_DW_no_register
;
833 while (ctx
->data
< ctx
->end_data
)
835 op
= dwarf2_parse_byte(ctx
);
837 if (op
>= DW_OP_lit0
&& op
<= DW_OP_lit31
)
838 stack
[++stk
] = op
- DW_OP_lit0
;
839 else if (op
>= DW_OP_reg0
&& op
<= DW_OP_reg31
)
841 /* dbghelp APIs don't know how to cope with this anyway
842 * (for example 'long long' stored in two registers)
843 * FIXME: We should tell winedbg how to deal with it (sigh)
847 DWORD cvreg
= dwarf2_map_register(op
- DW_OP_reg0
, module
);
848 if (loc
->reg
!= Wine_DW_no_register
)
849 FIXME("Only supporting one reg (%s/%d -> %s/%d)\n",
850 dbghelp_current_cpu
->fetch_regname(loc
->reg
), loc
->reg
,
851 dbghelp_current_cpu
->fetch_regname(cvreg
), cvreg
);
854 loc
->kind
= loc_register
;
856 else if (op
>= DW_OP_breg0
&& op
<= DW_OP_breg31
)
858 /* dbghelp APIs don't know how to cope with this anyway
859 * (for example 'long long' stored in two registers)
860 * FIXME: We should tell winedbg how to deal with it (sigh)
864 DWORD cvreg
= dwarf2_map_register(op
- DW_OP_breg0
, module
);
865 if (loc
->reg
!= Wine_DW_no_register
)
866 FIXME("Only supporting one breg (%s/%d -> %s/%d)\n",
867 dbghelp_current_cpu
->fetch_regname(loc
->reg
), loc
->reg
,
868 dbghelp_current_cpu
->fetch_regname(cvreg
), cvreg
);
871 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
872 loc
->kind
= loc_regrel
;
876 case DW_OP_nop
: break;
877 case DW_OP_addr
: stack
[++stk
] = dwarf2_parse_addr_head(ctx
, head
); break;
878 case DW_OP_const1u
: stack
[++stk
] = dwarf2_parse_byte(ctx
); break;
879 case DW_OP_const1s
: stack
[++stk
] = dwarf2_parse_byte(ctx
); break;
880 case DW_OP_const2u
: stack
[++stk
] = dwarf2_parse_u2(ctx
); break;
881 case DW_OP_const2s
: stack
[++stk
] = dwarf2_parse_u2(ctx
); break;
882 case DW_OP_const4u
: stack
[++stk
] = dwarf2_parse_u4(ctx
); break;
883 case DW_OP_const4s
: stack
[++stk
] = dwarf2_parse_u4(ctx
); break;
884 case DW_OP_const8u
: stack
[++stk
] = dwarf2_parse_u8(ctx
); break;
885 case DW_OP_const8s
: stack
[++stk
] = dwarf2_parse_u8(ctx
); break;
886 case DW_OP_constu
: stack
[++stk
] = dwarf2_leb128_as_unsigned(ctx
); break;
887 case DW_OP_consts
: stack
[++stk
] = dwarf2_leb128_as_signed(ctx
); break;
888 case DW_OP_dup
: stack
[stk
+ 1] = stack
[stk
]; stk
++; break;
889 case DW_OP_drop
: stk
--; break;
890 case DW_OP_over
: stack
[stk
+ 1] = stack
[stk
- 1]; stk
++; break;
891 case DW_OP_pick
: stack
[stk
+ 1] = stack
[stk
- dwarf2_parse_byte(ctx
)]; stk
++; break;
892 case DW_OP_swap
: tmp
= stack
[stk
]; stack
[stk
] = stack
[stk
-1]; stack
[stk
-1] = tmp
; break;
893 case DW_OP_rot
: tmp
= stack
[stk
]; stack
[stk
] = stack
[stk
-1]; stack
[stk
-1] = stack
[stk
-2]; stack
[stk
-2] = tmp
; break;
894 case DW_OP_abs
: stack
[stk
] = sizeof(stack
[stk
]) == 8 ? llabs((INT64
)stack
[stk
]) : abs((INT32
)stack
[stk
]); break;
895 case DW_OP_neg
: stack
[stk
] = -stack
[stk
]; break;
896 case DW_OP_not
: stack
[stk
] = ~stack
[stk
]; break;
897 case DW_OP_and
: stack
[stk
-1] &= stack
[stk
]; stk
--; break;
898 case DW_OP_or
: stack
[stk
-1] |= stack
[stk
]; stk
--; break;
899 case DW_OP_minus
: stack
[stk
-1] -= stack
[stk
]; stk
--; break;
900 case DW_OP_mul
: stack
[stk
-1] *= stack
[stk
]; stk
--; break;
901 case DW_OP_plus
: stack
[stk
-1] += stack
[stk
]; stk
--; break;
902 case DW_OP_xor
: stack
[stk
-1] ^= stack
[stk
]; stk
--; break;
903 case DW_OP_shl
: stack
[stk
-1] <<= stack
[stk
]; stk
--; break;
904 case DW_OP_shr
: stack
[stk
-1] >>= stack
[stk
]; stk
--; break;
905 case DW_OP_plus_uconst
: stack
[stk
] += dwarf2_leb128_as_unsigned(ctx
); break;
906 case DW_OP_shra
: stack
[stk
-1] = stack
[stk
-1] / (1 << stack
[stk
]); stk
--; break;
907 case DW_OP_div
: stack
[stk
-1] = stack
[stk
-1] / stack
[stk
]; stk
--; break;
908 case DW_OP_mod
: stack
[stk
-1] = stack
[stk
-1] % stack
[stk
]; stk
--; break;
909 case DW_OP_ge
: stack
[stk
-1] = (stack
[stk
-1] >= stack
[stk
]); stk
--; break;
910 case DW_OP_gt
: stack
[stk
-1] = (stack
[stk
-1] > stack
[stk
]); stk
--; break;
911 case DW_OP_le
: stack
[stk
-1] = (stack
[stk
-1] <= stack
[stk
]); stk
--; break;
912 case DW_OP_lt
: stack
[stk
-1] = (stack
[stk
-1] < stack
[stk
]); stk
--; break;
913 case DW_OP_eq
: stack
[stk
-1] = (stack
[stk
-1] == stack
[stk
]); stk
--; break;
914 case DW_OP_ne
: stack
[stk
-1] = (stack
[stk
-1] != stack
[stk
]); stk
--; break;
915 case DW_OP_skip
: tmp
= dwarf2_parse_u2(ctx
); ctx
->data
+= tmp
; break;
917 tmp
= dwarf2_parse_u2(ctx
);
918 if (!stack
[stk
--]) ctx
->data
+= tmp
;
921 tmp
= dwarf2_leb128_as_unsigned(ctx
);
924 if (loc
->reg
!= Wine_DW_no_register
)
925 FIXME("Only supporting one reg\n");
926 loc
->reg
= dwarf2_map_register(tmp
, module
);
928 loc
->kind
= loc_register
;
931 tmp
= dwarf2_leb128_as_unsigned(ctx
);
932 if (loc
->reg
!= Wine_DW_no_register
)
933 FIXME("Only supporting one regx\n");
934 loc
->reg
= dwarf2_map_register(tmp
, module
);
935 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
936 loc
->kind
= loc_regrel
;
939 if (loc
->reg
!= Wine_DW_no_register
)
940 FIXME("Only supporting one reg (%s/%d -> -2)\n",
941 dbghelp_current_cpu
->fetch_regname(loc
->reg
), loc
->reg
);
942 if (frame
&& frame
->kind
== loc_register
)
944 loc
->kind
= loc_regrel
;
945 loc
->reg
= frame
->reg
;
946 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
948 else if (frame
&& frame
->kind
== loc_regrel
)
950 loc
->kind
= loc_regrel
;
951 loc
->reg
= frame
->reg
;
952 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
) + frame
->offset
;
956 /* FIXME: this could be later optimized by not recomputing
957 * this very location expression
959 loc
->kind
= loc_dwarf2_block
;
960 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
965 unsigned sz
= dwarf2_leb128_as_unsigned(ctx
);
966 WARN("Not handling OP_piece (size=%d)\n", sz
);
973 FIXME("Unexpected empty stack\n");
974 return loc_err_internal
;
976 if (loc
->reg
!= Wine_DW_no_register
)
978 WARN("Too complex expression for deref\n");
979 return loc_err_too_complex
;
983 DWORD_PTR addr
= stack
[stk
--];
986 if (!ReadProcessMemory(hproc
, (void*)addr
, &deref
, head
->word_size
, NULL
))
988 WARN("Couldn't read memory at %lx\n", addr
);
989 return loc_err_cant_read
;
991 stack
[++stk
] = deref
;
995 loc
->kind
= loc_dwarf2_block
;
998 case DW_OP_deref_size
:
1001 FIXME("Unexpected empty stack\n");
1002 return loc_err_internal
;
1004 if (loc
->reg
!= Wine_DW_no_register
)
1006 WARN("Too complex expression for deref\n");
1007 return loc_err_too_complex
;
1011 DWORD_PTR addr
= stack
[stk
--];
1012 BYTE derefsize
= dwarf2_parse_byte(ctx
);
1015 if (!ReadProcessMemory(hproc
, (void*)addr
, &deref
, derefsize
, NULL
))
1017 WARN("Couldn't read memory at %lx\n", addr
);
1018 return loc_err_cant_read
;
1023 case 1: stack
[++stk
] = *(unsigned char*)&deref
; break;
1024 case 2: stack
[++stk
] = *(unsigned short*)&deref
; break;
1025 case 4: stack
[++stk
] = *(DWORD
*)&deref
; break;
1026 case 8: if (head
->word_size
>= derefsize
) stack
[++stk
] = deref
; break;
1031 dwarf2_parse_byte(ctx
);
1032 loc
->kind
= loc_dwarf2_block
;
1035 case DW_OP_stack_value
:
1036 /* Expected behaviour is that this is the last instruction of this
1037 * expression and just the "top of stack" value should be put to loc->offset. */
1040 if (op
< DW_OP_lo_user
) /* as DW_OP_hi_user is 0xFF, we don't need to test against it */
1041 FIXME("Unhandled attr op: %x\n", op
);
1042 /* FIXME else unhandled extension */
1043 return loc_err_internal
;
1046 loc
->offset
= stack
[stk
];
1050 static BOOL
dwarf2_compute_location_attr(dwarf2_parse_context_t
* ctx
,
1051 const dwarf2_debug_info_t
* di
,
1053 struct location
* loc
,
1054 const struct location
* frame
)
1056 struct attribute xloc
;
1058 if (!dwarf2_find_attribute(di
, dw
, &xloc
)) return FALSE
;
1062 case DW_FORM_data1
: case DW_FORM_data2
:
1063 case DW_FORM_udata
: case DW_FORM_sdata
:
1064 loc
->kind
= loc_absolute
;
1066 loc
->offset
= xloc
.u
.uvalue
;
1069 loc
->kind
= loc_dwarf2_location_list
;
1070 loc
->reg
= Wine_DW_no_register
;
1071 loc
->offset
= xloc
.u
.uvalue
;
1073 case DW_FORM_data8
: case DW_FORM_sec_offset
:
1074 loc
->kind
= loc_dwarf2_location_list
;
1075 loc
->reg
= Wine_DW_no_register
;
1076 loc
->offset
= xloc
.u
.lluvalue
;
1079 case DW_FORM_block1
:
1080 case DW_FORM_block2
:
1081 case DW_FORM_block4
:
1082 case DW_FORM_exprloc
:
1084 default: FIXME("Unsupported yet form %lx\n", xloc
.form
);
1088 /* assume we have a block form */
1089 if (dw
== DW_AT_frame_base
&& xloc
.u
.block
.size
== 1 && *xloc
.u
.block
.ptr
== DW_OP_call_frame_cfa
)
1091 loc
->kind
= loc_dwarf2_frame_cfa
;
1092 loc
->reg
= Wine_DW_no_register
;
1095 else if (xloc
.u
.block
.size
)
1097 dwarf2_traverse_context_t lctx
;
1098 enum location_error err
;
1100 lctx
.data
= xloc
.u
.block
.ptr
;
1101 lctx
.end_data
= xloc
.u
.block
.ptr
+ xloc
.u
.block
.size
;
1103 err
= compute_location(ctx
->module_ctx
->module
, &ctx
->head
, &lctx
, loc
, NULL
, frame
);
1106 loc
->kind
= loc_error
;
1109 else if (loc
->kind
== loc_dwarf2_block
)
1111 unsigned* ptr
= pool_alloc(&ctx
->module_ctx
->module
->pool
,
1112 sizeof(unsigned) + xloc
.u
.block
.size
);
1113 *ptr
= xloc
.u
.block
.size
;
1114 memcpy(ptr
+ 1, xloc
.u
.block
.ptr
, xloc
.u
.block
.size
);
1115 loc
->offset
= (ULONG_PTR
)ptr
;
1121 static struct symt
* dwarf2_lookup_type(const dwarf2_debug_info_t
* di
)
1123 struct attribute attr
;
1124 dwarf2_debug_info_t
* type
;
1126 if (!dwarf2_find_attribute(di
, DW_AT_type
, &attr
))
1127 /* this is only valid if current language of CU is C or C++ */
1128 return di
->unit_ctx
->module_ctx
->symt_cache
[sc_void
];
1129 if (!(type
= dwarf2_jump_to_debug_info(&attr
)))
1130 return di
->unit_ctx
->module_ctx
->symt_cache
[sc_unknown
];
1134 FIXME("Reference to itself\n");
1135 return di
->unit_ctx
->module_ctx
->symt_cache
[sc_unknown
];
1139 /* load the debug info entity */
1140 dwarf2_load_one_entry(type
);
1143 FIXME("Unable to load forward reference for tag %lx\n", type
->abbrev
->tag
);
1144 return di
->unit_ctx
->module_ctx
->symt_cache
[sc_unknown
];
1150 static const char* dwarf2_get_cpp_name(dwarf2_debug_info_t
* di
, const char* name
)
1153 struct attribute diname
;
1154 struct attribute spec
;
1156 if (di
->abbrev
->tag
== DW_TAG_compile_unit
|| di
->abbrev
->tag
== DW_TAG_partial_unit
) return name
;
1158 /* if the di is a definition, but has also a (previous) declaration, then scope must
1159 * be gotten from declaration not definition
1161 if (dwarf2_find_attribute(di
, DW_AT_specification
, &spec
) && spec
.gotten_from
== attr_direct
)
1163 di
= dwarf2_jump_to_debug_info(&spec
);
1166 FIXME("Should have found the debug info entry\n");
1171 if (!di
->unit_ctx
->cpp_name
)
1172 di
->unit_ctx
->cpp_name
= pool_alloc(&di
->unit_ctx
->pool
, MAX_SYM_NAME
);
1173 last
= di
->unit_ctx
->cpp_name
+ MAX_SYM_NAME
- strlen(name
) - 1;
1176 for (di
= di
->parent
; di
; di
= di
->parent
)
1178 switch (di
->abbrev
->tag
)
1180 case DW_TAG_namespace
:
1181 case DW_TAG_structure_type
:
1182 case DW_TAG_class_type
:
1183 case DW_TAG_interface_type
:
1184 case DW_TAG_union_type
:
1185 if (dwarf2_find_attribute(di
, DW_AT_name
, &diname
))
1187 size_t len
= strlen(diname
.u
.string
);
1189 if (last
< di
->unit_ctx
->cpp_name
) return NULL
;
1190 memcpy(last
, diname
.u
.string
, len
);
1191 last
[len
] = last
[len
+ 1] = ':';
1201 /******************************************************************
1204 * read a range for a given debug_info (either using AT_range attribute, in which
1205 * case we don't return all the details, or using AT_low_pc & AT_high_pc attributes)
1206 * in all cases, range is relative to beginning of compilation unit
1208 static BOOL
dwarf2_read_range(dwarf2_parse_context_t
* ctx
, const dwarf2_debug_info_t
* di
,
1209 ULONG_PTR
* plow
, ULONG_PTR
* phigh
)
1211 struct attribute range
;
1213 if (dwarf2_find_attribute(di
, DW_AT_ranges
, &range
))
1215 dwarf2_traverse_context_t traverse
;
1216 ULONG_PTR low
, high
;
1217 const ULONG_PTR UMAX
= ~(ULONG_PTR
)0u;
1219 traverse
.data
= ctx
->module_ctx
->sections
[section_ranges
].address
+ range
.u
.uvalue
;
1220 traverse
.end_data
= ctx
->module_ctx
->sections
[section_ranges
].address
+
1221 ctx
->module_ctx
->sections
[section_ranges
].size
;
1225 while (traverse
.data
+ 2 * ctx
->head
.word_size
< traverse
.end_data
)
1227 low
= dwarf2_parse_addr_head(&traverse
, &ctx
->head
);
1228 high
= dwarf2_parse_addr_head(&traverse
, &ctx
->head
);
1229 if (low
== 0 && high
== 0) break;
1230 if (low
== (ctx
->head
.word_size
== 8 ? (~(DWORD64
)0u) : (DWORD64
)(~0u)))
1231 FIXME("unsupported yet (base address selection)\n");
1232 /* range values are relative to start of compilation unit */
1233 low
+= ctx
->compiland
->address
- ctx
->module_ctx
->load_offset
;
1234 high
+= ctx
->compiland
->address
- ctx
->module_ctx
->load_offset
;
1235 if (low
< *plow
) *plow
= low
;
1236 if (high
> *phigh
) *phigh
= high
;
1238 if (*plow
== UMAX
|| *phigh
== 0) {FIXME("no entry found\n"); return FALSE
;}
1239 if (*plow
== *phigh
) {WARN("entry found, but low=high %lx %lx\n", low
, high
); return FALSE
;}
1245 struct attribute low_pc
;
1246 struct attribute high_pc
;
1248 if (!dwarf2_find_attribute(di
, DW_AT_low_pc
, &low_pc
) ||
1249 !dwarf2_find_attribute(di
, DW_AT_high_pc
, &high_pc
))
1251 *plow
= low_pc
.u
.uvalue
;
1252 *phigh
= high_pc
.u
.uvalue
;
1253 if (ctx
->head
.version
>= 4)
1254 switch (high_pc
.form
)
1264 /* From dwarf4 on, when FORM's class is constant, high_pc is an offset from low_pc */
1268 FIXME("Unsupported class for high_pc\n");
1275 /******************************************************************
1276 * dwarf2_read_one_debug_info
1278 * Loads into memory one debug info entry, and recursively its children (if any)
1280 static BOOL
dwarf2_read_one_debug_info(dwarf2_parse_context_t
* ctx
,
1281 dwarf2_traverse_context_t
* traverse
,
1282 dwarf2_debug_info_t
* parent_di
,
1283 dwarf2_debug_info_t
** pdi
)
1285 const dwarf2_abbrev_entry_t
*abbrev
;
1286 ULONG_PTR entry_code
;
1288 dwarf2_debug_info_t
* di
;
1289 dwarf2_debug_info_t
* child
;
1290 dwarf2_debug_info_t
** where
;
1291 dwarf2_abbrev_entry_attr_t
* attr
;
1293 struct attribute sibling
;
1295 offset
= traverse
->data
- ctx
->module_ctx
->sections
[ctx
->section
].address
;
1296 entry_code
= dwarf2_leb128_as_unsigned(traverse
);
1297 TRACE("found entry_code %lu at 0x%lx\n", entry_code
, offset
);
1303 abbrev
= dwarf2_abbrev_table_find_entry(&ctx
->abbrev_table
, entry_code
);
1306 WARN("Cannot find abbrev entry for %lu at 0x%lx\n", entry_code
, offset
);
1309 di
= sparse_array_add(&ctx
->debug_info_table
, offset
, &ctx
->pool
);
1310 if (!di
) return FALSE
;
1311 di
->abbrev
= abbrev
;
1313 di
->parent
= parent_di
;
1316 if (abbrev
->num_attr
)
1318 di
->data
= pool_alloc(&ctx
->pool
, abbrev
->num_attr
* sizeof(const char*));
1319 for (i
= 0, attr
= abbrev
->attrs
; attr
; i
++, attr
= attr
->next
)
1321 di
->data
[i
] = traverse
->data
;
1322 dwarf2_swallow_attribute(traverse
, &ctx
->head
, attr
);
1325 else di
->data
= NULL
;
1326 if (abbrev
->have_child
)
1328 vector_init(&di
->children
, sizeof(dwarf2_debug_info_t
*), 16);
1329 while (traverse
->data
< traverse
->end_data
)
1331 if (!dwarf2_read_one_debug_info(ctx
, traverse
, di
, &child
)) return FALSE
;
1333 where
= vector_add(&di
->children
, &ctx
->pool
);
1334 if (!where
) return FALSE
;
1338 if (dwarf2_find_attribute(di
, DW_AT_sibling
, &sibling
) &&
1339 traverse
->data
!= ctx
->module_ctx
->sections
[ctx
->section
].address
+ sibling
.u
.uvalue
)
1341 if (sibling
.u
.uvalue
>= ctx
->module_ctx
->sections
[ctx
->section
].size
)
1343 FIXME("cursor sibling after section end %s: 0x%lx 0x%x\n",
1344 dwarf2_debug_unit_ctx(ctx
), sibling
.u
.uvalue
, ctx
->module_ctx
->sections
[ctx
->section
].size
);
1347 WARN("setting cursor for %s to next sibling <0x%lx>\n",
1348 dwarf2_debug_traverse_ctx(traverse
), sibling
.u
.uvalue
);
1349 traverse
->data
= ctx
->module_ctx
->sections
[ctx
->section
].address
+ sibling
.u
.uvalue
;
1355 static struct vector
* dwarf2_get_di_children(dwarf2_debug_info_t
* di
)
1357 struct attribute spec
;
1361 if (di
->abbrev
->have_child
)
1362 return &di
->children
;
1363 if (!dwarf2_find_attribute(di
, DW_AT_specification
, &spec
)) break;
1364 if (!(di
= dwarf2_jump_to_debug_info(&spec
)))
1365 FIXME("Should have found the debug info entry\n");
1370 static struct symt
* dwarf2_parse_base_type(dwarf2_debug_info_t
* di
)
1372 struct attribute name
;
1373 struct attribute size
;
1374 struct attribute encoding
;
1376 if (di
->symt
) return di
->symt
;
1378 TRACE("%s\n", dwarf2_debug_di(di
));
1380 if (!dwarf2_find_attribute(di
, DW_AT_name
, &name
))
1381 name
.u
.string
= NULL
;
1382 if (!dwarf2_find_attribute(di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= 0;
1383 if (!dwarf2_find_attribute(di
, DW_AT_encoding
, &encoding
)) encoding
.u
.uvalue
= DW_ATE_void
;
1385 switch (encoding
.u
.uvalue
)
1387 case DW_ATE_void
: bt
= btVoid
; break;
1388 case DW_ATE_address
: bt
= btULong
; break;
1389 case DW_ATE_boolean
: bt
= btBool
; break;
1390 case DW_ATE_complex_float
: bt
= btComplex
; break;
1391 case DW_ATE_float
: bt
= btFloat
; break;
1392 case DW_ATE_signed
: bt
= btInt
; break;
1393 case DW_ATE_unsigned
: bt
= btUInt
; break;
1394 case DW_ATE_signed_char
: bt
= btChar
; break;
1395 case DW_ATE_unsigned_char
: bt
= btChar
; break;
1396 default: bt
= btNoType
; break;
1398 di
->symt
= &symt_new_basic(di
->unit_ctx
->module_ctx
->module
, bt
, name
.u
.string
, size
.u
.uvalue
)->symt
;
1400 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1404 static struct symt
* dwarf2_parse_typedef(dwarf2_debug_info_t
* di
)
1406 struct symt
* ref_type
;
1407 struct attribute name
;
1409 if (di
->symt
) return di
->symt
;
1411 TRACE("%s\n", dwarf2_debug_di(di
));
1413 if (!dwarf2_find_attribute(di
, DW_AT_name
, &name
)) name
.u
.string
= NULL
;
1414 ref_type
= dwarf2_lookup_type(di
);
1417 di
->symt
= &symt_new_typedef(di
->unit_ctx
->module_ctx
->module
, ref_type
, name
.u
.string
)->symt
;
1418 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1422 static struct symt
* dwarf2_parse_pointer_type(dwarf2_debug_info_t
* di
)
1424 struct symt
* ref_type
;
1425 struct attribute size
;
1427 if (di
->symt
) return di
->symt
;
1429 TRACE("%s\n", dwarf2_debug_di(di
));
1431 if (!dwarf2_find_attribute(di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= sizeof(void *);
1432 ref_type
= dwarf2_lookup_type(di
);
1433 di
->symt
= &symt_new_pointer(di
->unit_ctx
->module_ctx
->module
, ref_type
, size
.u
.uvalue
)->symt
;
1434 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1438 static struct symt
* dwarf2_parse_subrange_type(dwarf2_debug_info_t
* di
)
1440 struct symt
* ref_type
;
1441 struct attribute name
;
1442 struct attribute dummy
;
1444 if (di
->symt
) return di
->symt
;
1446 TRACE("%s\n", dwarf2_debug_di(di
));
1448 if (dwarf2_find_attribute(di
, DW_AT_name
, &name
)) FIXME("Found name for subrange %s\n", name
.u
.string
);
1449 if (dwarf2_find_attribute(di
, DW_AT_byte_size
, &dummy
)) FIXME("Found byte_size %lu\n", dummy
.u
.uvalue
);
1450 if (dwarf2_find_attribute(di
, DW_AT_bit_size
, &dummy
)) FIXME("Found bit_size %lu\n", dummy
.u
.uvalue
);
1451 /* for now, we don't support the byte_size nor bit_size about the subrange, and pretend the two
1452 * types are the same (FIXME)
1454 ref_type
= dwarf2_lookup_type(di
);
1455 di
->symt
= ref_type
;
1456 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1460 static struct symt
* dwarf2_parse_array_type(dwarf2_debug_info_t
* di
)
1462 struct symt
* ref_type
;
1463 struct symt
* idx_type
= NULL
;
1464 struct symt
* symt
= NULL
;
1465 struct attribute min
, max
, cnt
;
1466 dwarf2_debug_info_t
* child
;
1468 const struct vector
* children
;
1470 if (di
->symt
) return di
->symt
;
1472 TRACE("%s\n", dwarf2_debug_di(di
));
1474 ref_type
= dwarf2_lookup_type(di
);
1476 if (!(children
= dwarf2_get_di_children(di
)))
1478 /* fake an array with unknown size */
1479 /* FIXME: int4 even on 64bit machines??? */
1480 idx_type
= &symt_new_basic(di
->unit_ctx
->module_ctx
->module
, btInt
, "int", 4)->symt
;
1484 else for (i
= 0; i
< vector_length(children
); i
++)
1486 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1487 if (child
->symt
== di
->unit_ctx
->module_ctx
->symt_cache
[sc_unknown
]) continue;
1488 switch (child
->abbrev
->tag
)
1490 case DW_TAG_subrange_type
:
1491 idx_type
= dwarf2_lookup_type(child
);
1492 if (!dwarf2_find_attribute(child
, DW_AT_lower_bound
, &min
))
1494 if (dwarf2_find_attribute(child
, DW_AT_upper_bound
, &max
))
1495 cnt
.u
.uvalue
= max
.u
.uvalue
+ 1 - min
.u
.uvalue
;
1496 else if (!dwarf2_find_attribute(child
, DW_AT_count
, &cnt
))
1499 case DW_TAG_enumeration_type
:
1500 symt
= dwarf2_parse_enumeration_type(child
);
1501 if (symt_check_tag(symt
, SymTagEnum
))
1503 struct symt_enum
* enum_symt
= (struct symt_enum
*)symt
;
1504 idx_type
= enum_symt
->base_type
;
1507 for (j
= 0; j
< enum_symt
->vchildren
.num_elts
; ++j
)
1509 struct symt
** pc
= vector_at(&enum_symt
->vchildren
, j
);
1510 if (pc
&& symt_check_tag(*pc
, SymTagData
))
1512 struct symt_data
* elt
= (struct symt_data
*)(*pc
);
1513 if (elt
->u
.value
.n1
.n2
.n3
.lVal
< min
.u
.uvalue
)
1514 min
.u
.uvalue
= elt
->u
.value
.n1
.n2
.n3
.lVal
;
1515 if (elt
->u
.value
.n1
.n2
.n3
.lVal
> max
.u
.uvalue
)
1516 max
.u
.uvalue
= elt
->u
.value
.n1
.n2
.n3
.lVal
;
1522 FIXME("Unhandled Tag type 0x%lx at %s\n",
1523 child
->abbrev
->tag
, dwarf2_debug_di(di
));
1527 di
->symt
= &symt_new_array(di
->unit_ctx
->module_ctx
->module
, min
.u
.uvalue
, cnt
.u
.uvalue
, ref_type
, idx_type
)->symt
;
1531 static struct symt
* dwarf2_parse_const_type(dwarf2_debug_info_t
* di
)
1533 struct symt
* ref_type
;
1535 if (di
->symt
) return di
->symt
;
1537 TRACE("%s\n", dwarf2_debug_di(di
));
1539 ref_type
= dwarf2_lookup_type(di
);
1540 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1541 di
->symt
= ref_type
;
1546 static struct symt
* dwarf2_parse_volatile_type(dwarf2_debug_info_t
* di
)
1548 struct symt
* ref_type
;
1550 if (di
->symt
) return di
->symt
;
1552 TRACE("%s\n", dwarf2_debug_di(di
));
1554 ref_type
= dwarf2_lookup_type(di
);
1555 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1556 di
->symt
= ref_type
;
1561 static struct symt
* dwarf2_parse_restrict_type(dwarf2_debug_info_t
* di
)
1563 struct symt
* ref_type
;
1565 if (di
->symt
) return di
->symt
;
1567 TRACE("%s\n", dwarf2_debug_di(di
));
1569 ref_type
= dwarf2_lookup_type(di
);
1570 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1571 di
->symt
= ref_type
;
1576 static struct symt
* dwarf2_parse_unspecified_type(dwarf2_debug_info_t
* di
)
1578 struct attribute name
;
1579 struct attribute size
;
1580 struct symt_basic
*basic
;
1582 TRACE("%s\n", dwarf2_debug_di(di
));
1584 if (di
->symt
) return di
->symt
;
1586 if (!dwarf2_find_attribute(di
, DW_AT_name
, &name
))
1587 name
.u
.string
= "void";
1588 size
.u
.uvalue
= sizeof(void *);
1590 basic
= symt_new_basic(di
->unit_ctx
->module_ctx
->module
, btVoid
, name
.u
.string
, size
.u
.uvalue
);
1591 di
->symt
= &basic
->symt
;
1593 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1597 static struct symt
* dwarf2_parse_reference_type(dwarf2_debug_info_t
* di
)
1599 struct symt
* ref_type
= NULL
;
1601 if (di
->symt
) return di
->symt
;
1603 TRACE("%s\n", dwarf2_debug_di(di
));
1605 ref_type
= dwarf2_lookup_type(di
);
1606 /* FIXME: for now, we hard-wire C++ references to pointers */
1607 di
->symt
= &symt_new_pointer(di
->unit_ctx
->module_ctx
->module
, ref_type
, sizeof(void *))->symt
;
1609 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1614 static void dwarf2_parse_udt_member(dwarf2_debug_info_t
* di
,
1615 struct symt_udt
* parent
)
1617 struct symt
* elt_type
;
1618 struct attribute name
;
1619 struct attribute bit_size
;
1620 struct attribute bit_offset
;
1621 struct location loc
;
1625 TRACE("%s\n", dwarf2_debug_di(di
));
1627 if (!dwarf2_find_attribute(di
, DW_AT_name
, &name
)) name
.u
.string
= NULL
;
1628 elt_type
= dwarf2_lookup_type(di
);
1629 if (dwarf2_compute_location_attr(di
->unit_ctx
, di
, DW_AT_data_member_location
, &loc
, NULL
))
1631 if (loc
.kind
!= loc_absolute
)
1633 FIXME("Found register, while not expecting it\n");
1637 TRACE("found member_location at %s -> %lu\n",
1638 dwarf2_debug_di(di
), loc
.offset
);
1642 if (!dwarf2_find_attribute(di
, DW_AT_bit_size
, &bit_size
))
1643 bit_size
.u
.uvalue
= 0;
1644 if (dwarf2_find_attribute(di
, DW_AT_bit_offset
, &bit_offset
))
1646 /* FIXME: we should only do this when implementation is LSB (which is
1647 * the case on i386 processors)
1649 struct attribute nbytes
;
1650 if (!dwarf2_find_attribute(di
, DW_AT_byte_size
, &nbytes
))
1653 nbytes
.u
.uvalue
= symt_get_info(di
->unit_ctx
->module_ctx
->module
, elt_type
, TI_GET_LENGTH
, &size
) ?
1654 (ULONG_PTR
)size
: 0;
1656 bit_offset
.u
.uvalue
= nbytes
.u
.uvalue
* 8 - bit_offset
.u
.uvalue
- bit_size
.u
.uvalue
;
1658 else bit_offset
.u
.uvalue
= 0;
1659 symt_add_udt_element(di
->unit_ctx
->module_ctx
->module
, parent
, name
.u
.string
, elt_type
,
1660 loc
.offset
, bit_offset
.u
.uvalue
,
1663 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1666 static struct symt
* dwarf2_parse_subprogram(dwarf2_debug_info_t
* di
);
1668 static struct symt
* dwarf2_parse_udt_type(dwarf2_debug_info_t
* di
,
1671 struct attribute name
;
1672 struct attribute size
;
1673 struct vector
* children
;
1674 dwarf2_debug_info_t
*child
;
1677 if (di
->symt
) return di
->symt
;
1679 TRACE("%s\n", dwarf2_debug_di(di
));
1681 /* quirk... FIXME provide real support for anonymous UDTs */
1682 if (!dwarf2_find_attribute(di
, DW_AT_name
, &name
))
1683 name
.u
.string
= "zz_anon_zz";
1684 if (!dwarf2_find_attribute(di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= 0;
1686 di
->symt
= &symt_new_udt(di
->unit_ctx
->module_ctx
->module
, dwarf2_get_cpp_name(di
, name
.u
.string
),
1687 size
.u
.uvalue
, udt
)->symt
;
1689 children
= dwarf2_get_di_children(di
);
1690 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1692 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1694 switch (child
->abbrev
->tag
)
1696 case DW_TAG_array_type
:
1697 dwarf2_parse_array_type(child
);
1700 /* FIXME: should I follow the sibling stuff ?? */
1701 if (symt_check_tag(di
->symt
, SymTagUDT
))
1702 dwarf2_parse_udt_member(child
, (struct symt_udt
*)di
->symt
);
1704 case DW_TAG_enumeration_type
:
1705 dwarf2_parse_enumeration_type(child
);
1707 case DW_TAG_subprogram
:
1708 dwarf2_parse_subprogram(child
);
1710 case DW_TAG_const_type
:
1711 dwarf2_parse_const_type(child
);
1713 case DW_TAG_volatile_type
:
1714 dwarf2_parse_volatile_type(child
);
1716 case DW_TAG_pointer_type
:
1717 dwarf2_parse_pointer_type(child
);
1719 case DW_TAG_subrange_type
:
1720 dwarf2_parse_subrange_type(child
);
1722 case DW_TAG_structure_type
:
1723 case DW_TAG_class_type
:
1724 case DW_TAG_union_type
:
1725 case DW_TAG_typedef
:
1726 /* FIXME: we need to handle nested udt definitions */
1727 case DW_TAG_inheritance
:
1728 case DW_TAG_interface_type
:
1729 case DW_TAG_template_type_param
:
1730 case DW_TAG_template_value_param
:
1731 case DW_TAG_variable
:
1732 case DW_TAG_imported_declaration
:
1733 case DW_TAG_ptr_to_member_type
:
1734 case DW_TAG_GNU_template_template_param
:
1735 case DW_TAG_GNU_template_parameter_pack
:
1736 case DW_TAG_GNU_formal_parameter_pack
:
1737 /* FIXME: some C++ related stuff */
1740 FIXME("Unhandled Tag type 0x%lx at %s\n",
1741 child
->abbrev
->tag
, dwarf2_debug_di(di
));
1749 static void dwarf2_parse_enumerator(dwarf2_debug_info_t
* di
,
1750 struct symt_enum
* parent
)
1752 struct attribute name
;
1753 struct attribute value
;
1755 TRACE("%s\n", dwarf2_debug_di(di
));
1757 if (!dwarf2_find_attribute(di
, DW_AT_name
, &name
)) return;
1758 if (!dwarf2_find_attribute(di
, DW_AT_const_value
, &value
)) value
.u
.svalue
= 0;
1759 symt_add_enum_element(di
->unit_ctx
->module_ctx
->module
, parent
, name
.u
.string
, value
.u
.svalue
);
1761 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1764 static struct symt
* dwarf2_parse_enumeration_type(dwarf2_debug_info_t
* di
)
1766 struct attribute name
;
1767 struct attribute size
;
1768 struct symt_basic
* basetype
;
1769 struct vector
* children
;
1770 dwarf2_debug_info_t
*child
;
1773 if (di
->symt
) return di
->symt
;
1775 TRACE("%s\n", dwarf2_debug_di(di
));
1777 if (!dwarf2_find_attribute(di
, DW_AT_name
, &name
)) name
.u
.string
= NULL
;
1778 if (!dwarf2_find_attribute(di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= 4;
1780 switch (size
.u
.uvalue
) /* FIXME: that's wrong */
1782 case 1: basetype
= symt_new_basic(di
->unit_ctx
->module_ctx
->module
, btInt
, "char", 1); break;
1783 case 2: basetype
= symt_new_basic(di
->unit_ctx
->module_ctx
->module
, btInt
, "short", 2); break;
1785 case 4: basetype
= symt_new_basic(di
->unit_ctx
->module_ctx
->module
, btInt
, "int", 4); break;
1788 di
->symt
= &symt_new_enum(di
->unit_ctx
->module_ctx
->module
, name
.u
.string
, &basetype
->symt
)->symt
;
1790 children
= dwarf2_get_di_children(di
);
1791 /* FIXME: should we use the sibling stuff ?? */
1792 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1794 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1796 switch (child
->abbrev
->tag
)
1798 case DW_TAG_enumerator
:
1799 if (symt_check_tag(di
->symt
, SymTagEnum
))
1800 dwarf2_parse_enumerator(child
, (struct symt_enum
*)di
->symt
);
1803 FIXME("Unhandled Tag type 0x%lx at %s\n",
1804 di
->abbrev
->tag
, dwarf2_debug_di(di
));
1810 /* structure used to pass information around when parsing a subprogram */
1811 typedef struct dwarf2_subprogram_s
1813 dwarf2_parse_context_t
* ctx
;
1814 struct symt_function
* func
;
1815 struct symt_block
* current_block
;
1816 BOOL non_computed_variable
;
1817 struct location frame
;
1818 } dwarf2_subprogram_t
;
1820 /******************************************************************
1821 * dwarf2_parse_variable
1823 * Parses any variable (parameter, local/global variable)
1825 static void dwarf2_parse_variable(dwarf2_subprogram_t
* subpgm
,
1826 dwarf2_debug_info_t
* di
)
1828 struct symt
* param_type
;
1829 struct attribute name
, value
;
1830 struct location loc
;
1833 TRACE("%s\n", dwarf2_debug_di(di
));
1835 is_pmt
= !subpgm
->current_block
&& di
->abbrev
->tag
== DW_TAG_formal_parameter
;
1836 param_type
= dwarf2_lookup_type(di
);
1838 if (!dwarf2_find_attribute(di
, DW_AT_name
, &name
)) {
1839 /* cannot do much without the name, the functions below won't like it. */
1842 if (dwarf2_compute_location_attr(subpgm
->ctx
, di
, DW_AT_location
,
1843 &loc
, &subpgm
->frame
))
1845 struct attribute ext
;
1847 TRACE("found parameter %s (kind=%d, offset=%ld, reg=%d) at %s\n",
1848 debugstr_a(name
.u
.string
), loc
.kind
, loc
.offset
, loc
.reg
,
1849 dwarf2_debug_unit_ctx(subpgm
->ctx
));
1856 /* it's a global variable */
1857 /* FIXME: we don't handle its scope yet */
1858 if (!dwarf2_find_attribute(di
, DW_AT_external
, &ext
))
1860 loc
.offset
+= subpgm
->ctx
->module_ctx
->load_offset
;
1861 symt_new_global_variable(subpgm
->ctx
->module_ctx
->module
, subpgm
->ctx
->compiland
,
1862 dwarf2_get_cpp_name(di
, name
.u
.string
), !ext
.u
.uvalue
,
1863 loc
, 0, param_type
);
1866 subpgm
->non_computed_variable
= TRUE
;
1870 /* either a pmt/variable relative to frame pointer or
1871 * pmt/variable in a register
1874 symt_add_func_local(subpgm
->ctx
->module_ctx
->module
, subpgm
->func
,
1875 is_pmt
? DataIsParam
: DataIsLocal
,
1876 &loc
, subpgm
->current_block
, param_type
, name
.u
.string
);
1880 else if (dwarf2_find_attribute(di
, DW_AT_const_value
, &value
))
1892 V_UI4(&v
) = value
.u
.uvalue
;
1896 case DW_FORM_sec_offset
:
1898 V_UI8(&v
) = value
.u
.lluvalue
;
1903 V_I4(&v
) = value
.u
.svalue
;
1907 case DW_FORM_string
:
1908 /* FIXME: native doesn't report const strings from here !!
1909 * however, the value of the string is in the code somewhere
1911 V_VT(&v
) = VT_BYREF
;
1912 V_BYREF(&v
) = pool_strdup(&subpgm
->ctx
->module_ctx
->module
->pool
, value
.u
.string
);
1916 case DW_FORM_block1
:
1917 case DW_FORM_block2
:
1918 case DW_FORM_block4
:
1919 case DW_FORM_exprloc
:
1921 switch (value
.u
.block
.size
)
1923 case 1: V_I4(&v
) = *(BYTE
*)value
.u
.block
.ptr
; break;
1924 case 2: V_I4(&v
) = *(USHORT
*)value
.u
.block
.ptr
; break;
1925 case 4: V_I4(&v
) = *(DWORD
*)value
.u
.block
.ptr
; break;
1927 V_VT(&v
) = VT_BYREF
;
1928 V_BYREF(&v
) = pool_alloc(&subpgm
->ctx
->module_ctx
->module
->pool
, value
.u
.block
.size
);
1929 memcpy(V_BYREF(&v
), value
.u
.block
.ptr
, value
.u
.block
.size
);
1934 FIXME("Unsupported form for const value %s (%lx)\n",
1935 debugstr_a(name
.u
.string
), value
.form
);
1936 V_VT(&v
) = VT_EMPTY
;
1940 if (is_pmt
) FIXME("Unsupported constant (parameter) %s in function '%s'\n", debugstr_a(name
.u
.string
), subpgm
->func
->hash_elt
.name
);
1941 di
->symt
= &symt_add_func_constant(subpgm
->ctx
->module_ctx
->module
,
1942 subpgm
->func
, subpgm
->current_block
,
1943 param_type
, name
.u
.string
, &v
)->symt
;
1946 di
->symt
= &symt_new_constant(subpgm
->ctx
->module_ctx
->module
, subpgm
->ctx
->compiland
,
1947 name
.u
.string
, param_type
, &v
)->symt
;
1953 /* local variable has been optimized away... report anyway */
1954 loc
.kind
= loc_error
;
1955 loc
.reg
= loc_err_no_location
;
1956 symt_add_func_local(subpgm
->ctx
->module_ctx
->module
, subpgm
->func
,
1957 is_pmt
? DataIsParam
: DataIsLocal
,
1958 &loc
, subpgm
->current_block
, param_type
, name
.u
.string
);
1962 struct attribute is_decl
;
1963 /* only warn when di doesn't represent a declaration */
1964 if (!dwarf2_find_attribute(di
, DW_AT_declaration
, &is_decl
) ||
1965 !is_decl
.u
.uvalue
|| is_decl
.gotten_from
!= attr_direct
)
1966 WARN("dropping global variable %s which has been optimized away\n", debugstr_a(name
.u
.string
));
1969 if (is_pmt
&& subpgm
->func
&& symt_check_tag(subpgm
->func
->type
, SymTagFunctionType
))
1970 symt_add_function_signature_parameter(subpgm
->ctx
->module_ctx
->module
,
1971 (struct symt_function_signature
*)subpgm
->func
->type
,
1974 if (dwarf2_get_di_children(di
)) FIXME("Unsupported children\n");
1977 static void dwarf2_parse_subprogram_label(dwarf2_subprogram_t
* subpgm
,
1978 const dwarf2_debug_info_t
* di
)
1980 struct attribute name
;
1981 struct attribute low_pc
;
1982 struct location loc
;
1984 TRACE("%s\n", dwarf2_debug_di(di
));
1986 if (!dwarf2_find_attribute(di
, DW_AT_low_pc
, &low_pc
)) low_pc
.u
.uvalue
= 0;
1987 if (!dwarf2_find_attribute(di
, DW_AT_name
, &name
))
1988 name
.u
.string
= NULL
;
1990 loc
.kind
= loc_absolute
;
1991 loc
.offset
= subpgm
->ctx
->module_ctx
->load_offset
+ low_pc
.u
.uvalue
- subpgm
->func
->address
;
1992 symt_add_function_point(subpgm
->ctx
->module_ctx
->module
, subpgm
->func
, SymTagLabel
,
1993 &loc
, name
.u
.string
);
1996 static void dwarf2_parse_subprogram_block(dwarf2_subprogram_t
* subpgm
,
1997 dwarf2_debug_info_t
* di
);
1999 static struct symt
* dwarf2_parse_subroutine_type(dwarf2_debug_info_t
* di
);
2001 static void dwarf2_parse_inlined_subroutine(dwarf2_subprogram_t
* subpgm
,
2002 dwarf2_debug_info_t
* di
)
2004 ULONG_PTR low_pc
, high_pc
;
2005 struct vector
* children
;
2006 dwarf2_debug_info_t
*child
;
2009 TRACE("%s\n", dwarf2_debug_di(di
));
2011 if (!dwarf2_read_range(subpgm
->ctx
, di
, &low_pc
, &high_pc
))
2013 WARN("cannot read range\n");
2017 subpgm
->current_block
= symt_open_func_block(subpgm
->ctx
->module_ctx
->module
, subpgm
->func
, subpgm
->current_block
,
2018 subpgm
->ctx
->module_ctx
->load_offset
+ low_pc
- subpgm
->func
->address
,
2021 children
= dwarf2_get_di_children(di
);
2022 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2024 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2026 switch (child
->abbrev
->tag
)
2028 case DW_TAG_formal_parameter
:
2029 case DW_TAG_variable
:
2030 dwarf2_parse_variable(subpgm
, child
);
2032 case DW_TAG_lexical_block
:
2033 dwarf2_parse_subprogram_block(subpgm
, child
);
2035 case DW_TAG_inlined_subroutine
:
2036 dwarf2_parse_inlined_subroutine(subpgm
, child
);
2039 dwarf2_parse_subprogram_label(subpgm
, child
);
2041 case DW_TAG_GNU_call_site
:
2042 /* this isn't properly supported by dbghelp interface. skip it for now */
2045 FIXME("Unhandled Tag type 0x%lx at %s\n",
2046 child
->abbrev
->tag
, dwarf2_debug_di(di
));
2049 symt_close_func_block(subpgm
->ctx
->module_ctx
->module
, subpgm
->func
, subpgm
->current_block
, 0);
2050 subpgm
->current_block
= symt_check_tag(subpgm
->current_block
->container
, SymTagBlock
) ?
2051 (struct symt_block
*)subpgm
->current_block
->container
: NULL
;
2054 static void dwarf2_parse_subprogram_block(dwarf2_subprogram_t
* subpgm
,
2055 dwarf2_debug_info_t
* di
)
2057 ULONG_PTR low_pc
, high_pc
;
2058 struct vector
* children
;
2059 dwarf2_debug_info_t
*child
;
2062 TRACE("%s\n", dwarf2_debug_di(di
));
2064 if (!dwarf2_read_range(subpgm
->ctx
, di
, &low_pc
, &high_pc
))
2070 subpgm
->current_block
= symt_open_func_block(subpgm
->ctx
->module_ctx
->module
, subpgm
->func
, subpgm
->current_block
,
2071 subpgm
->ctx
->module_ctx
->load_offset
+ low_pc
- subpgm
->func
->address
,
2074 children
= dwarf2_get_di_children(di
);
2075 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2077 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2079 switch (child
->abbrev
->tag
)
2081 case DW_TAG_inlined_subroutine
:
2082 dwarf2_parse_inlined_subroutine(subpgm
, child
);
2084 case DW_TAG_variable
:
2085 dwarf2_parse_variable(subpgm
, child
);
2087 case DW_TAG_pointer_type
:
2088 dwarf2_parse_pointer_type(child
);
2090 case DW_TAG_subroutine_type
:
2091 dwarf2_parse_subroutine_type(child
);
2093 case DW_TAG_const_type
:
2094 dwarf2_parse_const_type(child
);
2096 case DW_TAG_lexical_block
:
2097 dwarf2_parse_subprogram_block(subpgm
, child
);
2099 case DW_TAG_subprogram
:
2100 /* FIXME: likely a declaration (to be checked)
2104 case DW_TAG_formal_parameter
:
2105 /* FIXME: likely elements for exception handling (GCC flavor)
2109 case DW_TAG_imported_module
:
2110 /* C++ stuff to be silenced (for now) */
2112 case DW_TAG_GNU_call_site
:
2113 /* this isn't properly supported by dbghelp interface. skip it for now */
2116 dwarf2_parse_subprogram_label(subpgm
, child
);
2118 case DW_TAG_class_type
:
2119 case DW_TAG_structure_type
:
2120 case DW_TAG_union_type
:
2121 case DW_TAG_enumeration_type
:
2122 case DW_TAG_typedef
:
2123 /* the type referred to will be loaded when we need it, so skip it */
2126 FIXME("Unhandled Tag type 0x%lx at %s\n",
2127 child
->abbrev
->tag
, dwarf2_debug_di(di
));
2131 symt_close_func_block(subpgm
->ctx
->module_ctx
->module
, subpgm
->func
, subpgm
->current_block
, 0);
2132 subpgm
->current_block
= symt_check_tag(subpgm
->current_block
->container
, SymTagBlock
) ?
2133 (struct symt_block
*)subpgm
->current_block
->container
: NULL
;
2136 static struct symt
* dwarf2_parse_subprogram(dwarf2_debug_info_t
* di
)
2138 struct attribute name
;
2139 ULONG_PTR low_pc
, high_pc
;
2140 struct attribute is_decl
;
2141 struct attribute inline_flags
;
2142 struct symt
* ret_type
;
2143 struct symt_function_signature
* sig_type
;
2144 dwarf2_subprogram_t subpgm
;
2145 struct vector
* children
;
2146 dwarf2_debug_info_t
* child
;
2149 if (di
->symt
) return di
->symt
;
2151 TRACE("%s\n", dwarf2_debug_di(di
));
2153 if (!dwarf2_find_attribute(di
, DW_AT_name
, &name
))
2155 WARN("No name for function... dropping function\n");
2158 /* if it's an abstract representation of an inline function, there should be
2159 * a concrete object that we'll handle
2161 if (dwarf2_find_attribute(di
, DW_AT_inline
, &inline_flags
) &&
2162 inline_flags
.u
.uvalue
!= DW_INL_not_inlined
)
2164 TRACE("Function %s declared as inlined (%ld)... skipping\n",
2165 debugstr_a(name
.u
.string
), inline_flags
.u
.uvalue
);
2169 if (dwarf2_find_attribute(di
, DW_AT_declaration
, &is_decl
) &&
2170 is_decl
.u
.uvalue
&& is_decl
.gotten_from
== attr_direct
)
2172 /* it's a real declaration, skip it */
2175 if (!dwarf2_read_range(di
->unit_ctx
, di
, &low_pc
, &high_pc
))
2177 WARN("cannot get range for %s\n", debugstr_a(name
.u
.string
));
2180 /* As functions (defined as inline assembly) get debug info with dwarf
2181 * (not the case for stabs), we just drop Wine's thunks here...
2182 * Actual thunks will be created in elf_module from the symbol table
2184 if (elf_is_in_thunk_area(di
->unit_ctx
->module_ctx
->load_offset
+ low_pc
, di
->unit_ctx
->module_ctx
->thunks
) >= 0)
2186 ret_type
= dwarf2_lookup_type(di
);
2188 /* FIXME: assuming C source code */
2189 sig_type
= symt_new_function_signature(di
->unit_ctx
->module_ctx
->module
, ret_type
, CV_CALL_FAR_C
);
2190 subpgm
.func
= symt_new_function(di
->unit_ctx
->module_ctx
->module
, di
->unit_ctx
->compiland
,
2191 dwarf2_get_cpp_name(di
, name
.u
.string
),
2192 di
->unit_ctx
->module_ctx
->load_offset
+ low_pc
, high_pc
- low_pc
,
2194 di
->symt
= &subpgm
.func
->symt
;
2195 subpgm
.ctx
= di
->unit_ctx
;
2196 if (!dwarf2_compute_location_attr(di
->unit_ctx
, di
, DW_AT_frame_base
,
2197 &subpgm
.frame
, NULL
))
2200 subpgm
.frame
.kind
= loc_regrel
;
2201 subpgm
.frame
.reg
= dbghelp_current_cpu
->frame_regno
;
2202 subpgm
.frame
.offset
= 0;
2204 subpgm
.non_computed_variable
= FALSE
;
2205 subpgm
.current_block
= NULL
;
2207 children
= dwarf2_get_di_children(di
);
2208 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2210 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2212 switch (child
->abbrev
->tag
)
2214 case DW_TAG_variable
:
2215 case DW_TAG_formal_parameter
:
2216 dwarf2_parse_variable(&subpgm
, child
);
2218 case DW_TAG_lexical_block
:
2219 dwarf2_parse_subprogram_block(&subpgm
, child
);
2221 case DW_TAG_inlined_subroutine
:
2222 dwarf2_parse_inlined_subroutine(&subpgm
, child
);
2224 case DW_TAG_pointer_type
:
2225 dwarf2_parse_pointer_type(child
);
2227 case DW_TAG_const_type
:
2228 dwarf2_parse_const_type(child
);
2230 case DW_TAG_subprogram
:
2231 /* FIXME: likely a declaration (to be checked)
2236 dwarf2_parse_subprogram_label(&subpgm
, child
);
2238 case DW_TAG_class_type
:
2239 case DW_TAG_structure_type
:
2240 case DW_TAG_union_type
:
2241 case DW_TAG_enumeration_type
:
2242 case DW_TAG_typedef
:
2243 /* the type referred to will be loaded when we need it, so skip it */
2245 case DW_TAG_unspecified_parameters
:
2246 case DW_TAG_template_type_param
:
2247 case DW_TAG_template_value_param
:
2248 case DW_TAG_GNU_call_site
:
2249 case DW_TAG_GNU_template_parameter_pack
:
2250 case DW_TAG_GNU_formal_parameter_pack
:
2251 /* FIXME: no support in dbghelp's internals so far */
2254 FIXME("Unhandled Tag type 0x%lx at %s\n",
2255 child
->abbrev
->tag
, dwarf2_debug_di(di
));
2259 if (subpgm
.non_computed_variable
|| subpgm
.frame
.kind
>= loc_user
)
2261 symt_add_function_point(di
->unit_ctx
->module_ctx
->module
, subpgm
.func
, SymTagCustom
,
2262 &subpgm
.frame
, NULL
);
2268 static struct symt
* dwarf2_parse_subroutine_type(dwarf2_debug_info_t
* di
)
2270 struct symt
* ret_type
;
2271 struct symt_function_signature
* sig_type
;
2272 struct vector
* children
;
2273 dwarf2_debug_info_t
* child
;
2276 if (di
->symt
) return di
->symt
;
2278 TRACE("%s\n", dwarf2_debug_di(di
));
2280 ret_type
= dwarf2_lookup_type(di
);
2282 /* FIXME: assuming C source code */
2283 sig_type
= symt_new_function_signature(di
->unit_ctx
->module_ctx
->module
, ret_type
, CV_CALL_FAR_C
);
2285 children
= dwarf2_get_di_children(di
);
2286 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2288 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2290 switch (child
->abbrev
->tag
)
2292 case DW_TAG_formal_parameter
:
2293 symt_add_function_signature_parameter(di
->unit_ctx
->module_ctx
->module
, sig_type
,
2294 dwarf2_lookup_type(child
));
2296 case DW_TAG_unspecified_parameters
:
2297 WARN("Unsupported unspecified parameters\n");
2302 return di
->symt
= &sig_type
->symt
;
2305 static void dwarf2_parse_namespace(dwarf2_debug_info_t
* di
)
2307 struct vector
* children
;
2308 dwarf2_debug_info_t
* child
;
2311 if (di
->symt
) return;
2313 TRACE("%s\n", dwarf2_debug_di(di
));
2315 di
->symt
= di
->unit_ctx
->module_ctx
->symt_cache
[sc_void
];
2317 children
= dwarf2_get_di_children(di
);
2318 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2320 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2321 dwarf2_load_one_entry(child
);
2325 static void dwarf2_parse_imported_unit(dwarf2_debug_info_t
* di
)
2327 struct attribute imp
;
2329 if (di
->symt
) return;
2331 TRACE("%s\n", dwarf2_debug_di(di
));
2333 if (dwarf2_find_attribute(di
, DW_AT_import
, &imp
))
2335 dwarf2_debug_info_t
* jmp
= dwarf2_jump_to_debug_info(&imp
);
2336 if (jmp
) di
->symt
= jmp
->symt
;
2337 else FIXME("Couldn't load imported CU\n");
2340 FIXME("Couldn't find import attribute\n");
2343 static void dwarf2_load_one_entry(dwarf2_debug_info_t
* di
)
2345 switch (di
->abbrev
->tag
)
2347 case DW_TAG_typedef
:
2348 dwarf2_parse_typedef(di
);
2350 case DW_TAG_base_type
:
2351 dwarf2_parse_base_type(di
);
2353 case DW_TAG_pointer_type
:
2354 dwarf2_parse_pointer_type(di
);
2356 case DW_TAG_class_type
:
2357 dwarf2_parse_udt_type(di
, UdtClass
);
2359 case DW_TAG_structure_type
:
2360 dwarf2_parse_udt_type(di
, UdtStruct
);
2362 case DW_TAG_union_type
:
2363 dwarf2_parse_udt_type(di
, UdtUnion
);
2365 case DW_TAG_array_type
:
2366 dwarf2_parse_array_type(di
);
2368 case DW_TAG_const_type
:
2369 dwarf2_parse_const_type(di
);
2371 case DW_TAG_volatile_type
:
2372 dwarf2_parse_volatile_type(di
);
2374 case DW_TAG_restrict_type
:
2375 dwarf2_parse_restrict_type(di
);
2377 case DW_TAG_unspecified_type
:
2378 dwarf2_parse_unspecified_type(di
);
2380 case DW_TAG_reference_type
:
2381 case DW_TAG_rvalue_reference_type
:
2382 dwarf2_parse_reference_type(di
);
2384 case DW_TAG_enumeration_type
:
2385 dwarf2_parse_enumeration_type(di
);
2387 case DW_TAG_subprogram
:
2388 dwarf2_parse_subprogram(di
);
2390 case DW_TAG_subroutine_type
:
2391 dwarf2_parse_subroutine_type(di
);
2393 case DW_TAG_variable
:
2395 dwarf2_subprogram_t subpgm
;
2397 subpgm
.ctx
= di
->unit_ctx
;
2399 subpgm
.current_block
= NULL
;
2400 subpgm
.frame
.kind
= loc_absolute
;
2401 subpgm
.frame
.offset
= 0;
2402 subpgm
.frame
.reg
= Wine_DW_no_register
;
2403 dwarf2_parse_variable(&subpgm
, di
);
2406 case DW_TAG_namespace
:
2407 dwarf2_parse_namespace(di
);
2409 case DW_TAG_subrange_type
:
2410 dwarf2_parse_subrange_type(di
);
2412 case DW_TAG_imported_unit
:
2413 dwarf2_parse_imported_unit(di
);
2415 /* keep it silent until we need DW_OP_call_xxx support */
2416 case DW_TAG_dwarf_procedure
:
2417 /* silence a couple of non-C language defines (mainly C++ but others too) */
2418 case DW_TAG_imported_module
:
2419 case DW_TAG_imported_declaration
:
2420 case DW_TAG_interface_type
:
2422 case DW_TAG_ptr_to_member_type
:
2425 FIXME("Unhandled Tag type 0x%lx at %s\n",
2426 di
->abbrev
->tag
, dwarf2_debug_di(di
));
2430 static void dwarf2_set_line_number(struct module
* module
, ULONG_PTR address
,
2431 const struct vector
* v
, unsigned file
, unsigned line
)
2433 struct symt_function
* func
;
2434 struct symt_ht
* symt
;
2437 if (!file
|| !(psrc
= vector_at(v
, file
- 1))) return;
2439 TRACE("%s %lx %s %u\n",
2440 debugstr_w(module
->modulename
), address
, debugstr_a(source_get(module
, *psrc
)), line
);
2441 symt
= symt_find_nearest(module
, address
);
2442 if (symt_check_tag(&symt
->symt
, SymTagFunction
))
2444 func
= (struct symt_function
*)symt
;
2445 symt_add_func_line(module
, func
, *psrc
, line
, address
- func
->address
);
2449 static BOOL
dwarf2_parse_line_numbers(dwarf2_parse_context_t
* ctx
,
2450 const char* compile_dir
,
2453 dwarf2_traverse_context_t traverse
;
2455 unsigned insn_size
, version
, default_stmt
;
2456 unsigned line_range
, opcode_base
;
2458 unsigned char offset_size
;
2459 const unsigned char* opcode_len
;
2461 struct vector files
;
2464 /* section with line numbers stripped */
2465 if (ctx
->module_ctx
->sections
[section_line
].address
== IMAGE_NO_MAP
)
2468 if (offset
+ 4 > ctx
->module_ctx
->sections
[section_line
].size
)
2470 WARN("out of bounds offset\n");
2473 traverse
.data
= ctx
->module_ctx
->sections
[section_line
].address
+ offset
;
2474 traverse
.end_data
= ctx
->module_ctx
->sections
[section_line
].address
+ ctx
->module_ctx
->sections
[section_line
].size
;
2476 length
= dwarf2_parse_3264(&traverse
, &offset_size
);
2477 if (offset_size
!= ctx
->head
.offset_size
)
2479 WARN("Mismatch in 32/64 bit format\n");
2482 traverse
.end_data
= traverse
.data
+ length
;
2484 if (traverse
.end_data
> ctx
->module_ctx
->sections
[section_line
].address
+ ctx
->module_ctx
->sections
[section_line
].size
)
2486 WARN("out of bounds header\n");
2489 version
= dwarf2_parse_u2(&traverse
);
2490 dwarf2_parse_offset(&traverse
, offset_size
); /* header_len */
2491 insn_size
= dwarf2_parse_byte(&traverse
);
2493 dwarf2_parse_byte(&traverse
); /* max_operations_per_instructions */
2494 default_stmt
= dwarf2_parse_byte(&traverse
);
2495 line_base
= (signed char)dwarf2_parse_byte(&traverse
);
2496 line_range
= dwarf2_parse_byte(&traverse
);
2497 opcode_base
= dwarf2_parse_byte(&traverse
);
2499 opcode_len
= traverse
.data
;
2500 traverse
.data
+= opcode_base
- 1;
2502 vector_init(&dirs
, sizeof(const char*), 4);
2503 p
= vector_add(&dirs
, &ctx
->pool
);
2504 *p
= compile_dir
? compile_dir
: ".";
2505 while (traverse
.data
< traverse
.end_data
&& *traverse
.data
)
2507 const char* rel
= (const char*)traverse
.data
;
2508 unsigned rellen
= strlen(rel
);
2509 TRACE("Got include %s\n", debugstr_a(rel
));
2510 traverse
.data
+= rellen
+ 1;
2511 p
= vector_add(&dirs
, &ctx
->pool
);
2513 if (*rel
== '/' || !compile_dir
|| !*compile_dir
)
2517 /* include directory relative to compile directory */
2518 unsigned baselen
= strlen(compile_dir
);
2519 char* tmp
= pool_alloc(&ctx
->pool
, baselen
+ 1 + rellen
+ 1);
2520 strcpy(tmp
, compile_dir
);
2521 if (baselen
&& tmp
[baselen
- 1] != '/') tmp
[baselen
++] = '/';
2522 strcpy(&tmp
[baselen
], rel
);
2529 vector_init(&files
, sizeof(unsigned), 16);
2530 while (traverse
.data
< traverse
.end_data
&& *traverse
.data
)
2532 unsigned int dir_index
, mod_time
;
2537 name
= (const char*)traverse
.data
;
2538 traverse
.data
+= strlen(name
) + 1;
2539 dir_index
= dwarf2_leb128_as_unsigned(&traverse
);
2540 mod_time
= dwarf2_leb128_as_unsigned(&traverse
);
2541 length
= dwarf2_leb128_as_unsigned(&traverse
);
2542 dir
= *(const char**)vector_at(&dirs
, dir_index
);
2543 TRACE("Got file %s/%s (%u,%lu)\n", debugstr_a(dir
), debugstr_a(name
), mod_time
, length
);
2544 psrc
= vector_add(&files
, &ctx
->pool
);
2545 *psrc
= source_new(ctx
->module_ctx
->module
, dir
, name
);
2549 while (traverse
.data
< traverse
.end_data
&& *traverse
.data
)
2551 ULONG_PTR address
= 0;
2554 unsigned is_stmt
= default_stmt
;
2555 BOOL end_sequence
= FALSE
;
2556 unsigned opcode
, extopcode
, i
;
2558 while (!end_sequence
)
2560 opcode
= dwarf2_parse_byte(&traverse
);
2561 TRACE("Got opcode %x\n", opcode
);
2563 if (opcode
>= opcode_base
)
2565 unsigned delta
= opcode
- opcode_base
;
2567 address
+= (delta
/ line_range
) * insn_size
;
2568 line
+= line_base
+ (delta
% line_range
);
2569 dwarf2_set_line_number(ctx
->module_ctx
->module
, address
, &files
, file
, line
);
2576 dwarf2_set_line_number(ctx
->module_ctx
->module
, address
, &files
, file
, line
);
2578 case DW_LNS_advance_pc
:
2579 address
+= insn_size
* dwarf2_leb128_as_unsigned(&traverse
);
2581 case DW_LNS_advance_line
:
2582 line
+= dwarf2_leb128_as_signed(&traverse
);
2584 case DW_LNS_set_file
:
2585 file
= dwarf2_leb128_as_unsigned(&traverse
);
2587 case DW_LNS_set_column
:
2588 dwarf2_leb128_as_unsigned(&traverse
);
2590 case DW_LNS_negate_stmt
:
2593 case DW_LNS_set_basic_block
:
2595 case DW_LNS_const_add_pc
:
2596 address
+= ((255 - opcode_base
) / line_range
) * insn_size
;
2598 case DW_LNS_fixed_advance_pc
:
2599 address
+= dwarf2_parse_u2(&traverse
);
2601 case DW_LNS_extended_op
:
2602 dwarf2_leb128_as_unsigned(&traverse
);
2603 extopcode
= dwarf2_parse_byte(&traverse
);
2606 case DW_LNE_end_sequence
:
2607 dwarf2_set_line_number(ctx
->module_ctx
->module
, address
, &files
, file
, line
);
2608 end_sequence
= TRUE
;
2610 case DW_LNE_set_address
:
2611 address
= ctx
->module_ctx
->load_offset
+ dwarf2_parse_addr_head(&traverse
, &ctx
->head
);
2613 case DW_LNE_define_file
:
2614 FIXME("not handled define file %s\n", debugstr_a((char *)traverse
.data
));
2615 traverse
.data
+= strlen((const char *)traverse
.data
) + 1;
2616 dwarf2_leb128_as_unsigned(&traverse
);
2617 dwarf2_leb128_as_unsigned(&traverse
);
2618 dwarf2_leb128_as_unsigned(&traverse
);
2620 case DW_LNE_set_discriminator
:
2624 descr
= dwarf2_leb128_as_unsigned(&traverse
);
2625 WARN("not handled discriminator %x\n", descr
);
2629 FIXME("Unsupported extended opcode %x\n", extopcode
);
2634 WARN("Unsupported opcode %x\n", opcode
);
2635 for (i
= 0; i
< opcode_len
[opcode
]; i
++)
2636 dwarf2_leb128_as_unsigned(&traverse
);
2645 unsigned dwarf2_cache_cuhead(struct dwarf2_module_info_s
* module
, struct symt_compiland
* c
, const dwarf2_cuhead_t
* head
)
2647 dwarf2_cuhead_t
* ah
;
2649 for (i
= 0; i
< module
->num_cuheads
; ++i
)
2651 if (memcmp(module
->cuheads
[i
], head
, sizeof(*head
)) == 0)
2653 c
->user
= module
->cuheads
[i
];
2657 if (!(ah
= pool_alloc(&c
->container
->module
->pool
, sizeof(*head
)))) return FALSE
;
2658 memcpy(ah
, head
, sizeof(*head
));
2659 module
->cuheads
= realloc(module
->cuheads
, ++module
->num_cuheads
* sizeof(head
));
2660 module
->cuheads
[module
->num_cuheads
- 1] = ah
;
2665 static dwarf2_parse_context_t
* dwarf2_locate_cu(dwarf2_parse_module_context_t
* module_ctx
, ULONG_PTR ref
)
2668 dwarf2_parse_context_t
* ctx
;
2670 for (i
= 0; i
< module_ctx
->unit_contexts
.num_elts
; ++i
)
2672 ctx
= vector_at(&module_ctx
->unit_contexts
, i
);
2673 where
= module_ctx
->sections
[ctx
->section
].address
+ ref
;
2674 if (where
>= ctx
->traverse_DIE
.data
&& where
< ctx
->traverse_DIE
.end_data
)
2677 FIXME("Couldn't find ref 0x%lx inside sect\n", ref
);
2681 static BOOL
dwarf2_parse_compilation_unit_head(dwarf2_parse_context_t
* ctx
,
2682 dwarf2_traverse_context_t
* mod_ctx
)
2684 dwarf2_traverse_context_t abbrev_ctx
;
2685 const unsigned char* comp_unit_start
= mod_ctx
->data
;
2686 ULONG_PTR cu_length
;
2687 ULONG_PTR cu_abbrev_offset
;
2688 /* FIXME this is a temporary configuration while adding support for dwarf3&4 bits */
2689 static LONG max_supported_dwarf_version
= 0;
2691 cu_length
= dwarf2_parse_3264(mod_ctx
, &ctx
->head
.offset_size
);
2693 ctx
->traverse_DIE
.data
= mod_ctx
->data
;
2694 ctx
->traverse_DIE
.end_data
= mod_ctx
->data
+ cu_length
;
2695 mod_ctx
->data
+= cu_length
;
2696 ctx
->head
.version
= dwarf2_parse_u2(&ctx
->traverse_DIE
);
2697 cu_abbrev_offset
= dwarf2_parse_offset(&ctx
->traverse_DIE
, ctx
->head
.offset_size
);
2698 ctx
->head
.word_size
= dwarf2_parse_byte(&ctx
->traverse_DIE
);
2699 ctx
->status
= UNIT_ERROR
;
2701 TRACE("Compilation Unit Header found at 0x%x:\n",
2702 (int)(comp_unit_start
- ctx
->module_ctx
->sections
[section_debug
].address
));
2703 TRACE("- length: %lu\n", cu_length
);
2704 TRACE("- version: %u\n", ctx
->head
.version
);
2705 TRACE("- abbrev_offset: %lu\n", cu_abbrev_offset
);
2706 TRACE("- word_size: %u\n", ctx
->head
.word_size
);
2707 TRACE("- offset_size: %u\n", ctx
->head
.offset_size
);
2709 if (ctx
->head
.version
>= 2)
2710 ctx
->module_ctx
->cu_versions
|= 1 << (ctx
->head
.version
- 2);
2711 if (max_supported_dwarf_version
== 0)
2713 char* env
= getenv("DBGHELP_DWARF_VERSION");
2714 LONG v
= env
? atol(env
) : 4;
2715 max_supported_dwarf_version
= (v
>= 2 && v
<= 4) ? v
: 4;
2718 if (ctx
->head
.version
< 2 || ctx
->head
.version
> max_supported_dwarf_version
)
2720 WARN("DWARF version %d isn't supported. Wine dbghelp only supports DWARF 2 up to %u.\n",
2721 ctx
->head
.version
, max_supported_dwarf_version
);
2725 pool_init(&ctx
->pool
, 65536);
2726 ctx
->section
= section_debug
;
2727 ctx
->ref_offset
= comp_unit_start
- ctx
->module_ctx
->sections
[section_debug
].address
;
2728 ctx
->cpp_name
= NULL
;
2729 ctx
->status
= UNIT_NOTLOADED
;
2731 abbrev_ctx
.data
= ctx
->module_ctx
->sections
[section_abbrev
].address
+ cu_abbrev_offset
;
2732 abbrev_ctx
.end_data
= ctx
->module_ctx
->sections
[section_abbrev
].address
+ ctx
->module_ctx
->sections
[section_abbrev
].size
;
2733 dwarf2_parse_abbrev_set(&abbrev_ctx
, &ctx
->abbrev_table
, &ctx
->pool
);
2735 sparse_array_init(&ctx
->debug_info_table
, sizeof(dwarf2_debug_info_t
), 128);
2739 static BOOL
dwarf2_parse_compilation_unit(dwarf2_parse_context_t
* ctx
)
2741 dwarf2_debug_info_t
* di
;
2742 dwarf2_traverse_context_t cu_ctx
= ctx
->traverse_DIE
;
2745 switch (ctx
->status
)
2747 case UNIT_ERROR
: return FALSE
;
2748 case UNIT_BEINGLOADED
:
2749 FIXME("Circular deps on CU\n");
2752 case UNIT_LOADED_FAIL
:
2754 case UNIT_NOTLOADED
: break;
2757 ctx
->status
= UNIT_BEINGLOADED
;
2758 if (dwarf2_read_one_debug_info(ctx
, &cu_ctx
, NULL
, &di
))
2760 if (di
->abbrev
->tag
== DW_TAG_compile_unit
|| di
->abbrev
->tag
== DW_TAG_partial_unit
)
2762 struct attribute name
;
2763 struct vector
* children
;
2764 dwarf2_debug_info_t
* child
= NULL
;
2766 struct attribute stmt_list
, low_pc
;
2767 struct attribute comp_dir
;
2769 if (!dwarf2_find_attribute(di
, DW_AT_name
, &name
))
2770 name
.u
.string
= NULL
;
2772 /* get working directory of current compilation unit */
2773 if (!dwarf2_find_attribute(di
, DW_AT_comp_dir
, &comp_dir
))
2774 comp_dir
.u
.string
= NULL
;
2776 if (!dwarf2_find_attribute(di
, DW_AT_low_pc
, &low_pc
))
2777 low_pc
.u
.uvalue
= 0;
2778 ctx
->compiland
= symt_new_compiland(ctx
->module_ctx
->module
, ctx
->module_ctx
->load_offset
+ low_pc
.u
.uvalue
,
2779 source_new(ctx
->module_ctx
->module
, comp_dir
.u
.string
, name
.u
.string
));
2780 dwarf2_cache_cuhead(ctx
->module_ctx
->module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
, ctx
->compiland
, &ctx
->head
);
2781 di
->symt
= &ctx
->compiland
->symt
;
2782 children
= dwarf2_get_di_children(di
);
2783 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2785 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2786 dwarf2_load_one_entry(child
);
2788 if (dwarf2_find_attribute(di
, DW_AT_stmt_list
, &stmt_list
))
2790 if (dwarf2_parse_line_numbers(ctx
, comp_dir
.u
.string
, stmt_list
.u
.uvalue
))
2791 ctx
->module_ctx
->module
->module
.LineNumbers
= TRUE
;
2793 ctx
->status
= UNIT_LOADED
;
2796 else FIXME("Should have a compilation unit here %lu\n", di
->abbrev
->tag
);
2798 if (ctx
->status
== UNIT_BEINGLOADED
) ctx
->status
= UNIT_LOADED_FAIL
;
2802 static BOOL
dwarf2_lookup_loclist(const struct module_format
* modfmt
, const dwarf2_cuhead_t
* head
,
2803 const BYTE
* start
, ULONG_PTR ip
, dwarf2_traverse_context_t
* lctx
)
2806 const BYTE
* ptr
= start
;
2809 while (ptr
< modfmt
->u
.dwarf2_info
->debug_loc
.address
+ modfmt
->u
.dwarf2_info
->debug_loc
.size
)
2811 beg
= dwarf2_get_addr(ptr
, head
->word_size
); ptr
+= head
->word_size
;
2812 end
= dwarf2_get_addr(ptr
, head
->word_size
); ptr
+= head
->word_size
;
2813 if (!beg
&& !end
) break;
2814 len
= dwarf2_get_u2(ptr
); ptr
+= 2;
2816 if (beg
<= ip
&& ip
< end
)
2819 lctx
->end_data
= ptr
+ len
;
2824 WARN("Couldn't find ip in location list\n");
2828 static const dwarf2_cuhead_t
* get_cuhead_from_func(const struct symt_function
* func
)
2830 if (func
&& symt_check_tag(func
->container
, SymTagCompiland
))
2832 struct symt_compiland
* c
= (struct symt_compiland
*)func
->container
;
2833 return (const dwarf2_cuhead_t
*)c
->user
;
2835 FIXME("Should have a compilation unit head\n");
2839 static BOOL
compute_call_frame_cfa(struct module
* module
, ULONG_PTR ip
, struct location
* frame
);
2841 static enum location_error
loc_compute_frame(struct process
* pcs
,
2842 const struct module_format
* modfmt
,
2843 const struct symt_function
* func
,
2844 DWORD_PTR ip
, const dwarf2_cuhead_t
* head
,
2845 struct location
* frame
)
2847 struct symt
** psym
= NULL
;
2848 struct location
* pframe
;
2849 dwarf2_traverse_context_t lctx
;
2850 enum location_error err
;
2853 for (i
=0; i
<vector_length(&func
->vchildren
); i
++)
2855 psym
= vector_at(&func
->vchildren
, i
);
2856 if (psym
&& symt_check_tag(*psym
, SymTagCustom
))
2858 pframe
= &((struct symt_hierarchy_point
*)*psym
)->loc
;
2860 /* First, recompute the frame information, if needed */
2861 switch (pframe
->kind
)
2867 case loc_dwarf2_location_list
:
2868 WARN("Searching loclist for %s\n", debugstr_a(func
->hash_elt
.name
));
2869 if (!dwarf2_lookup_loclist(modfmt
, head
,
2870 modfmt
->u
.dwarf2_info
->debug_loc
.address
+ pframe
->offset
,
2872 return loc_err_out_of_scope
;
2873 if ((err
= compute_location(modfmt
->module
, head
,
2874 &lctx
, frame
, pcs
->handle
, NULL
)) < 0) return err
;
2875 if (frame
->kind
>= loc_user
)
2877 WARN("Couldn't compute runtime frame location\n");
2878 return loc_err_too_complex
;
2881 case loc_dwarf2_frame_cfa
:
2882 if (!compute_call_frame_cfa(modfmt
->module
, ip
+ ((struct symt_compiland
*)func
->container
)->address
, frame
)) return loc_err_internal
;
2885 WARN("Unsupported frame kind %d\n", pframe
->kind
);
2886 return loc_err_internal
;
2891 WARN("Couldn't find Custom function point, whilst location list offset is searched\n");
2892 return loc_err_internal
;
2897 RULE_UNSET
, /* not set at all */
2898 RULE_UNDEFINED
, /* undefined value */
2899 RULE_SAME
, /* same value as previous frame */
2900 RULE_CFA_OFFSET
, /* stored at cfa offset */
2901 RULE_OTHER_REG
, /* stored in other register */
2902 RULE_EXPRESSION
, /* address specified by expression */
2903 RULE_VAL_EXPRESSION
/* value specified by expression */
2906 /* make it large enough for all CPUs */
2907 #define NB_FRAME_REGS 64
2908 #define MAX_SAVED_STATES 16
2912 ULONG_PTR cfa_offset
;
2913 unsigned char cfa_reg
;
2914 enum reg_rule cfa_rule
;
2915 enum reg_rule rules
[NB_FRAME_REGS
];
2916 ULONG_PTR regs
[NB_FRAME_REGS
];
2922 ULONG_PTR code_align
;
2923 LONG_PTR data_align
;
2924 unsigned char retaddr_reg
;
2925 unsigned char fde_encoding
;
2926 unsigned char lsda_encoding
;
2927 unsigned char signal_frame
;
2928 unsigned char aug_z_format
;
2929 unsigned char state_sp
;
2930 struct frame_state state
;
2931 struct frame_state state_stack
[MAX_SAVED_STATES
];
2934 static ULONG_PTR
dwarf2_parse_augmentation_ptr(dwarf2_traverse_context_t
* ctx
, unsigned char encoding
, unsigned char word_size
)
2938 if (encoding
== DW_EH_PE_omit
) return 0;
2940 switch (encoding
& 0xf0)
2945 case DW_EH_PE_pcrel
:
2946 base
= (ULONG_PTR
)ctx
->data
;
2949 FIXME("unsupported encoding %02x\n", encoding
);
2953 switch (encoding
& 0x0f)
2955 case DW_EH_PE_native
:
2956 return base
+ dwarf2_parse_addr(ctx
, word_size
);
2957 case DW_EH_PE_leb128
:
2958 return base
+ dwarf2_leb128_as_unsigned(ctx
);
2959 case DW_EH_PE_data2
:
2960 return base
+ dwarf2_parse_u2(ctx
);
2961 case DW_EH_PE_data4
:
2962 return base
+ dwarf2_parse_u4(ctx
);
2963 case DW_EH_PE_data8
:
2964 return base
+ dwarf2_parse_u8(ctx
);
2965 case DW_EH_PE_signed
|DW_EH_PE_leb128
:
2966 return base
+ dwarf2_leb128_as_signed(ctx
);
2967 case DW_EH_PE_signed
|DW_EH_PE_data2
:
2968 return base
+ (signed short)dwarf2_parse_u2(ctx
);
2969 case DW_EH_PE_signed
|DW_EH_PE_data4
:
2970 return base
+ (signed int)dwarf2_parse_u4(ctx
);
2971 case DW_EH_PE_signed
|DW_EH_PE_data8
:
2972 return base
+ (LONG64
)dwarf2_parse_u8(ctx
);
2974 FIXME("unsupported encoding %02x\n", encoding
);
2979 static BOOL
parse_cie_details(dwarf2_traverse_context_t
* ctx
, struct frame_info
* info
, unsigned char word_size
)
2981 unsigned char version
;
2982 const char* augmentation
;
2983 const unsigned char* end
;
2986 memset(info
, 0, sizeof(*info
));
2987 info
->lsda_encoding
= DW_EH_PE_omit
;
2988 info
->aug_z_format
= 0;
2990 /* parse the CIE first */
2991 version
= dwarf2_parse_byte(ctx
);
2992 if (version
!= 1 && version
!= 3 && version
!= 4)
2994 FIXME("unknown CIE version %u at %p\n", version
, ctx
->data
- 1);
2997 augmentation
= (const char*)ctx
->data
;
2998 ctx
->data
+= strlen(augmentation
) + 1;
3003 /* skip 'address_size' and 'segment_size' */
3008 info
->code_align
= dwarf2_leb128_as_unsigned(ctx
);
3009 info
->data_align
= dwarf2_leb128_as_signed(ctx
);
3010 info
->retaddr_reg
= version
== 1 ? dwarf2_parse_byte(ctx
) :dwarf2_leb128_as_unsigned(ctx
);
3015 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
3018 TRACE("\tparsing augmentation %s\n", debugstr_a(augmentation
));
3019 if (*augmentation
) do
3021 switch (*augmentation
)
3024 len
= dwarf2_leb128_as_unsigned(ctx
);
3025 end
= ctx
->data
+ len
;
3026 info
->aug_z_format
= 1;
3029 info
->lsda_encoding
= dwarf2_parse_byte(ctx
);
3033 unsigned char encoding
= dwarf2_parse_byte(ctx
);
3034 /* throw away the indirect bit, as we don't care for the result */
3035 encoding
&= ~DW_EH_PE_indirect
;
3036 dwarf2_parse_augmentation_ptr(ctx
, encoding
, word_size
); /* handler */
3040 info
->fde_encoding
= dwarf2_parse_byte(ctx
);
3043 info
->signal_frame
= 1;
3046 FIXME("unknown augmentation '%c'\n", *augmentation
);
3047 if (!end
) return FALSE
;
3049 } while (*++augmentation
);
3050 if (end
) ctx
->data
= end
;
3054 static BOOL
dwarf2_get_cie(ULONG_PTR addr
, struct module
* module
, DWORD_PTR delta
,
3055 dwarf2_traverse_context_t
* fde_ctx
, dwarf2_traverse_context_t
* cie_ctx
,
3056 struct frame_info
* info
, BOOL in_eh_frame
)
3058 const unsigned char* ptr_blk
;
3059 const unsigned char* cie_ptr
;
3060 const unsigned char* last_cie_ptr
= (const unsigned char*)~0;
3062 ULONG_PTR start
, range
;
3064 const BYTE
* start_data
= fde_ctx
->data
;
3065 unsigned char word_size
= module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
;
3066 unsigned char offset_size
;
3068 /* skip 0-padding at beginning of section (alignment) */
3069 while (fde_ctx
->data
+ 2 * 4 < fde_ctx
->end_data
)
3071 if (dwarf2_parse_u4(fde_ctx
))
3077 for (; fde_ctx
->data
+ 2 * 4 < fde_ctx
->end_data
; fde_ctx
->data
= ptr_blk
)
3079 const unsigned char* st
= fde_ctx
->data
;
3080 /* find the FDE for address addr (skip CIE) */
3081 len
= dwarf2_parse_3264(fde_ctx
, &offset_size
);
3082 cie_id
= in_eh_frame
? 0 : (offset_size
== 4 ? DW_CIE_ID
: (ULONG_PTR
)DW64_CIE_ID
);
3083 ptr_blk
= fde_ctx
->data
+ len
;
3084 id
= dwarf2_parse_offset(fde_ctx
, offset_size
);
3088 /* we need some bits out of the CIE in order to parse all contents */
3089 if (!parse_cie_details(fde_ctx
, info
, word_size
)) return FALSE
;
3090 cie_ctx
->data
= fde_ctx
->data
;
3091 cie_ctx
->end_data
= ptr_blk
;
3094 cie_ptr
= (in_eh_frame
) ? fde_ctx
->data
- id
- 4 : start_data
+ id
;
3095 if (cie_ptr
!= last_cie_ptr
)
3097 last_cie_ptr
= cie_ptr
;
3098 cie_ctx
->data
= cie_ptr
;
3099 cie_ctx
->end_data
= cie_ptr
+ (offset_size
== 4 ? 4 : 4 + 8);
3100 cie_ctx
->end_data
+= dwarf2_parse_3264(cie_ctx
, &offset_size
);
3102 if (dwarf2_parse_offset(cie_ctx
, in_eh_frame
? word_size
: offset_size
) != cie_id
)
3104 FIXME("wrong CIE pointer at %x from FDE %x\n",
3105 (unsigned)(cie_ptr
- start_data
),
3106 (unsigned)(fde_ctx
->data
- start_data
));
3109 if (!parse_cie_details(cie_ctx
, info
, word_size
)) return FALSE
;
3111 start
= delta
+ dwarf2_parse_augmentation_ptr(fde_ctx
, info
->fde_encoding
, word_size
);
3112 range
= dwarf2_parse_augmentation_ptr(fde_ctx
, info
->fde_encoding
& 0x0F, word_size
);
3114 if (addr
>= start
&& addr
< start
+ range
)
3116 /* reset the FDE context */
3117 fde_ctx
->end_data
= ptr_blk
;
3126 static int valid_reg(ULONG_PTR reg
)
3128 if (reg
>= NB_FRAME_REGS
) FIXME("unsupported reg %lx\n", reg
);
3129 return (reg
< NB_FRAME_REGS
);
3132 static void execute_cfa_instructions(struct module
* module
, dwarf2_traverse_context_t
* ctx
,
3133 ULONG_PTR last_ip
, struct frame_info
*info
)
3135 while (ctx
->data
< ctx
->end_data
&& info
->ip
<= last_ip
+ info
->signal_frame
)
3137 enum dwarf_call_frame_info op
= dwarf2_parse_byte(ctx
);
3143 case DW_CFA_advance_loc
:
3145 ULONG_PTR offset
= (op
& 0x3f) * info
->code_align
;
3146 TRACE("%lx: DW_CFA_advance_loc %lu\n", info
->ip
, offset
);
3152 ULONG_PTR reg
= op
& 0x3f;
3153 LONG_PTR offset
= dwarf2_leb128_as_unsigned(ctx
) * info
->data_align
;
3154 if (!valid_reg(reg
)) break;
3155 TRACE("%lx: DW_CFA_offset %s, %ld\n",
3157 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, module
, TRUE
)),
3159 info
->state
.regs
[reg
] = offset
;
3160 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
3163 case DW_CFA_restore
:
3165 ULONG_PTR reg
= op
& 0x3f;
3166 if (!valid_reg(reg
)) break;
3167 TRACE("%lx: DW_CFA_restore %s\n",
3169 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, module
, TRUE
)));
3170 info
->state
.rules
[reg
] = RULE_UNSET
;
3179 case DW_CFA_set_loc
:
3181 ULONG_PTR loc
= dwarf2_parse_augmentation_ptr(ctx
, info
->fde_encoding
,
3182 module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
);
3183 TRACE("%lx: DW_CFA_set_loc %lx\n", info
->ip
, loc
);
3187 case DW_CFA_advance_loc1
:
3189 ULONG_PTR offset
= dwarf2_parse_byte(ctx
) * info
->code_align
;
3190 TRACE("%lx: DW_CFA_advance_loc1 %lu\n", info
->ip
, offset
);
3194 case DW_CFA_advance_loc2
:
3196 ULONG_PTR offset
= dwarf2_parse_u2(ctx
) * info
->code_align
;
3197 TRACE("%lx: DW_CFA_advance_loc2 %lu\n", info
->ip
, offset
);
3201 case DW_CFA_advance_loc4
:
3203 ULONG_PTR offset
= dwarf2_parse_u4(ctx
) * info
->code_align
;
3204 TRACE("%lx: DW_CFA_advance_loc4 %lu\n", info
->ip
, offset
);
3208 case DW_CFA_offset_extended
:
3209 case DW_CFA_offset_extended_sf
:
3211 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
3212 LONG_PTR offset
= (op
== DW_CFA_offset_extended
) ? dwarf2_leb128_as_unsigned(ctx
) * info
->data_align
3213 : dwarf2_leb128_as_signed(ctx
) * info
->data_align
;
3214 if (!valid_reg(reg
)) break;
3215 TRACE("%lx: DW_CFA_offset_extended %s, %ld\n",
3217 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, module
, TRUE
)),
3219 info
->state
.regs
[reg
] = offset
;
3220 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
3223 case DW_CFA_restore_extended
:
3225 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
3226 if (!valid_reg(reg
)) break;
3227 TRACE("%lx: DW_CFA_restore_extended %s\n",
3229 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, module
, TRUE
)));
3230 info
->state
.rules
[reg
] = RULE_UNSET
;
3233 case DW_CFA_undefined
:
3235 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
3236 if (!valid_reg(reg
)) break;
3237 TRACE("%lx: DW_CFA_undefined %s\n",
3239 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, module
, TRUE
)));
3240 info
->state
.rules
[reg
] = RULE_UNDEFINED
;
3243 case DW_CFA_same_value
:
3245 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
3246 if (!valid_reg(reg
)) break;
3247 TRACE("%lx: DW_CFA_same_value %s\n",
3249 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, module
, TRUE
)));
3250 info
->state
.regs
[reg
] = reg
;
3251 info
->state
.rules
[reg
] = RULE_SAME
;
3254 case DW_CFA_register
:
3256 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
3257 ULONG_PTR reg2
= dwarf2_leb128_as_unsigned(ctx
);
3258 if (!valid_reg(reg
) || !valid_reg(reg2
)) break;
3259 TRACE("%lx: DW_CFA_register %s == %s\n",
3261 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, module
, TRUE
)),
3262 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg2
, module
, TRUE
)));
3263 info
->state
.regs
[reg
] = reg2
;
3264 info
->state
.rules
[reg
] = RULE_OTHER_REG
;
3267 case DW_CFA_remember_state
:
3268 TRACE("%lx: DW_CFA_remember_state\n", info
->ip
);
3269 if (info
->state_sp
>= MAX_SAVED_STATES
)
3270 FIXME("%lx: DW_CFA_remember_state too many nested saves\n", info
->ip
);
3272 info
->state_stack
[info
->state_sp
++] = info
->state
;
3274 case DW_CFA_restore_state
:
3275 TRACE("%lx: DW_CFA_restore_state\n", info
->ip
);
3276 if (!info
->state_sp
)
3277 FIXME("%lx: DW_CFA_restore_state without corresponding save\n", info
->ip
);
3279 info
->state
= info
->state_stack
[--info
->state_sp
];
3281 case DW_CFA_def_cfa
:
3282 case DW_CFA_def_cfa_sf
:
3284 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
3285 ULONG_PTR offset
= (op
== DW_CFA_def_cfa
) ? dwarf2_leb128_as_unsigned(ctx
)
3286 : dwarf2_leb128_as_signed(ctx
) * info
->data_align
;
3287 if (!valid_reg(reg
)) break;
3288 TRACE("%lx: DW_CFA_def_cfa %s, %ld\n",
3290 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, module
, TRUE
)),
3292 info
->state
.cfa_reg
= reg
;
3293 info
->state
.cfa_offset
= offset
;
3294 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
3297 case DW_CFA_def_cfa_register
:
3299 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
3300 if (!valid_reg(reg
)) break;
3301 TRACE("%lx: DW_CFA_def_cfa_register %s\n",
3303 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, module
, TRUE
)));
3304 info
->state
.cfa_reg
= reg
;
3305 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
3308 case DW_CFA_def_cfa_offset
:
3309 case DW_CFA_def_cfa_offset_sf
:
3311 ULONG_PTR offset
= (op
== DW_CFA_def_cfa_offset
) ? dwarf2_leb128_as_unsigned(ctx
)
3312 : dwarf2_leb128_as_signed(ctx
) * info
->data_align
;
3313 TRACE("%lx: DW_CFA_def_cfa_offset %ld\n", info
->ip
, offset
);
3314 info
->state
.cfa_offset
= offset
;
3315 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
3318 case DW_CFA_def_cfa_expression
:
3320 ULONG_PTR expr
= (ULONG_PTR
)ctx
->data
;
3321 ULONG_PTR len
= dwarf2_leb128_as_unsigned(ctx
);
3322 TRACE("%lx: DW_CFA_def_cfa_expression %lx-%lx\n", info
->ip
, expr
, expr
+len
);
3323 info
->state
.cfa_offset
= expr
;
3324 info
->state
.cfa_rule
= RULE_VAL_EXPRESSION
;
3328 case DW_CFA_expression
:
3329 case DW_CFA_val_expression
:
3331 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
3332 ULONG_PTR expr
= (ULONG_PTR
)ctx
->data
;
3333 ULONG_PTR len
= dwarf2_leb128_as_unsigned(ctx
);
3334 if (!valid_reg(reg
)) break;
3335 TRACE("%lx: DW_CFA_%sexpression %s %lx-%lx\n",
3336 info
->ip
, (op
== DW_CFA_expression
) ? "" : "val_",
3337 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, module
, TRUE
)),
3339 info
->state
.regs
[reg
] = expr
;
3340 info
->state
.rules
[reg
] = (op
== DW_CFA_expression
) ? RULE_EXPRESSION
: RULE_VAL_EXPRESSION
;
3344 case DW_CFA_GNU_args_size
:
3345 /* FIXME: should check that GCC is the compiler for this CU */
3347 ULONG_PTR args
= dwarf2_leb128_as_unsigned(ctx
);
3348 TRACE("%lx: DW_CFA_GNU_args_size %lu\n", info
->ip
, args
);
3353 FIXME("%lx: unknown CFA opcode %02x\n", info
->ip
, op
);
3359 /* retrieve a context register from its dwarf number */
3360 static DWORD64
get_context_reg(const struct module
* module
, struct cpu_stack_walk
*csw
, union ctx
*context
,
3363 unsigned regno
= csw
->cpu
->map_dwarf_register(dw_reg
, module
, TRUE
), sz
;
3364 void* ptr
= csw
->cpu
->fetch_context_reg(context
, regno
, &sz
);
3367 return *(DWORD64
*)ptr
;
3369 return *(DWORD
*)ptr
;
3371 FIXME("unhandled size %d\n", sz
);
3375 /* set a context register from its dwarf number */
3376 static void set_context_reg(const struct module
* module
, struct cpu_stack_walk
* csw
, union ctx
*context
,
3377 ULONG_PTR dw_reg
, ULONG_PTR val
, BOOL isdebuggee
)
3379 unsigned regno
= csw
->cpu
->map_dwarf_register(dw_reg
, module
, TRUE
), sz
;
3380 ULONG_PTR
* ptr
= csw
->cpu
->fetch_context_reg(context
, regno
, &sz
);
3386 if (sz
> sizeof(tmp
))
3388 FIXME("register %lu/%u size is too wide: %u\n", dw_reg
, regno
, sz
);
3391 if (!sw_read_mem(csw
, val
, tmp
, sz
))
3393 WARN("Couldn't read memory at %p\n", (void*)val
);
3396 memcpy(ptr
, tmp
, sz
);
3400 if (sz
!= sizeof(ULONG_PTR
))
3402 FIXME("assigning to register %lu/%u of wrong size %u\n", dw_reg
, regno
, sz
);
3409 /* copy a register from one context to another using dwarf number */
3410 static void copy_context_reg(const struct module
* module
, struct cpu_stack_walk
*csw
,
3411 union ctx
*dstcontext
, ULONG_PTR dwregdst
,
3412 union ctx
*srccontext
, ULONG_PTR dwregsrc
)
3414 unsigned regdstno
= csw
->cpu
->map_dwarf_register(dwregdst
, module
, TRUE
), szdst
;
3415 unsigned regsrcno
= csw
->cpu
->map_dwarf_register(dwregsrc
, module
, TRUE
), szsrc
;
3416 ULONG_PTR
* ptrdst
= csw
->cpu
->fetch_context_reg(dstcontext
, regdstno
, &szdst
);
3417 ULONG_PTR
* ptrsrc
= csw
->cpu
->fetch_context_reg(srccontext
, regsrcno
, &szsrc
);
3421 FIXME("Cannot copy register %lu/%u => %lu/%u because of size mismatch (%u => %u)\n",
3422 dwregsrc
, regsrcno
, dwregdst
, regdstno
, szsrc
, szdst
);
3425 memcpy(ptrdst
, ptrsrc
, szdst
);
3428 static ULONG_PTR
eval_expression(const struct module
* module
, struct cpu_stack_walk
* csw
,
3429 const unsigned char* zp
, union ctx
*context
)
3431 dwarf2_traverse_context_t ctx
;
3432 ULONG_PTR reg
, sz
, tmp
;
3438 ctx
.end_data
= zp
+ 4;
3439 len
= dwarf2_leb128_as_unsigned(&ctx
);
3440 ctx
.end_data
= ctx
.data
+ len
;
3442 while (ctx
.data
< ctx
.end_data
)
3444 unsigned char opcode
= dwarf2_parse_byte(&ctx
);
3446 if (opcode
>= DW_OP_lit0
&& opcode
<= DW_OP_lit31
)
3447 stack
[++sp
] = opcode
- DW_OP_lit0
;
3448 else if (opcode
>= DW_OP_reg0
&& opcode
<= DW_OP_reg31
)
3449 stack
[++sp
] = get_context_reg(module
, csw
, context
, opcode
- DW_OP_reg0
);
3450 else if (opcode
>= DW_OP_breg0
&& opcode
<= DW_OP_breg31
)
3451 stack
[++sp
] = get_context_reg(module
, csw
, context
, opcode
- DW_OP_breg0
)
3452 + dwarf2_leb128_as_signed(&ctx
);
3453 else switch (opcode
)
3455 case DW_OP_nop
: break;
3456 case DW_OP_addr
: stack
[++sp
] = dwarf2_parse_addr(&ctx
, module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
); break;
3457 case DW_OP_const1u
: stack
[++sp
] = dwarf2_parse_byte(&ctx
); break;
3458 case DW_OP_const1s
: stack
[++sp
] = (signed char)dwarf2_parse_byte(&ctx
); break;
3459 case DW_OP_const2u
: stack
[++sp
] = dwarf2_parse_u2(&ctx
); break;
3460 case DW_OP_const2s
: stack
[++sp
] = (short)dwarf2_parse_u2(&ctx
); break;
3461 case DW_OP_const4u
: stack
[++sp
] = dwarf2_parse_u4(&ctx
); break;
3462 case DW_OP_const4s
: stack
[++sp
] = (signed int)dwarf2_parse_u4(&ctx
); break;
3463 case DW_OP_const8u
: stack
[++sp
] = dwarf2_parse_u8(&ctx
); break;
3464 case DW_OP_const8s
: stack
[++sp
] = (LONG_PTR
)dwarf2_parse_u8(&ctx
); break;
3465 case DW_OP_constu
: stack
[++sp
] = dwarf2_leb128_as_unsigned(&ctx
); break;
3466 case DW_OP_consts
: stack
[++sp
] = dwarf2_leb128_as_signed(&ctx
); break;
3469 if (!sw_read_mem(csw
, stack
[sp
], &tmp
, module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
))
3471 ERR("Couldn't read memory at %s\n", wine_dbgstr_longlong(stack
[sp
]));
3476 case DW_OP_dup
: stack
[sp
+ 1] = stack
[sp
]; sp
++; break;
3477 case DW_OP_drop
: sp
--; break;
3478 case DW_OP_over
: stack
[sp
+ 1] = stack
[sp
- 1]; sp
++; break;
3479 case DW_OP_pick
: stack
[sp
+ 1] = stack
[sp
- dwarf2_parse_byte(&ctx
)]; sp
++; break;
3480 case DW_OP_swap
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = tmp
; break;
3481 case DW_OP_rot
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = stack
[sp
-2]; stack
[sp
-2] = tmp
; break;
3482 case DW_OP_abs
: stack
[sp
] = sizeof(stack
[sp
]) == 8 ? llabs((INT64
)stack
[sp
]) : abs((INT32
)stack
[sp
]); break;
3483 case DW_OP_neg
: stack
[sp
] = -stack
[sp
]; break;
3484 case DW_OP_not
: stack
[sp
] = ~stack
[sp
]; break;
3485 case DW_OP_and
: stack
[sp
-1] &= stack
[sp
]; sp
--; break;
3486 case DW_OP_or
: stack
[sp
-1] |= stack
[sp
]; sp
--; break;
3487 case DW_OP_minus
: stack
[sp
-1] -= stack
[sp
]; sp
--; break;
3488 case DW_OP_mul
: stack
[sp
-1] *= stack
[sp
]; sp
--; break;
3489 case DW_OP_plus
: stack
[sp
-1] += stack
[sp
]; sp
--; break;
3490 case DW_OP_xor
: stack
[sp
-1] ^= stack
[sp
]; sp
--; break;
3491 case DW_OP_shl
: stack
[sp
-1] <<= stack
[sp
]; sp
--; break;
3492 case DW_OP_shr
: stack
[sp
-1] >>= stack
[sp
]; sp
--; break;
3493 case DW_OP_plus_uconst
: stack
[sp
] += dwarf2_leb128_as_unsigned(&ctx
); break;
3494 case DW_OP_shra
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (1 << stack
[sp
]); sp
--; break;
3495 case DW_OP_div
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (LONG_PTR
)stack
[sp
]; sp
--; break;
3496 case DW_OP_mod
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] % (LONG_PTR
)stack
[sp
]; sp
--; break;
3497 case DW_OP_ge
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] >= (LONG_PTR
)stack
[sp
]); sp
--; break;
3498 case DW_OP_gt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] > (LONG_PTR
)stack
[sp
]); sp
--; break;
3499 case DW_OP_le
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] <= (LONG_PTR
)stack
[sp
]); sp
--; break;
3500 case DW_OP_lt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] < (LONG_PTR
)stack
[sp
]); sp
--; break;
3501 case DW_OP_eq
: stack
[sp
-1] = (stack
[sp
-1] == stack
[sp
]); sp
--; break;
3502 case DW_OP_ne
: stack
[sp
-1] = (stack
[sp
-1] != stack
[sp
]); sp
--; break;
3503 case DW_OP_skip
: tmp
= (short)dwarf2_parse_u2(&ctx
); ctx
.data
+= tmp
; break;
3504 case DW_OP_bra
: tmp
= (short)dwarf2_parse_u2(&ctx
); if (!stack
[sp
--]) ctx
.data
+= tmp
; break;
3505 case DW_OP_GNU_encoded_addr
:
3506 tmp
= dwarf2_parse_byte(&ctx
);
3507 stack
[++sp
] = dwarf2_parse_augmentation_ptr(&ctx
, tmp
, module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
);
3510 stack
[++sp
] = get_context_reg(module
, csw
, context
, dwarf2_leb128_as_unsigned(&ctx
));
3513 reg
= dwarf2_leb128_as_unsigned(&ctx
);
3514 tmp
= dwarf2_leb128_as_signed(&ctx
);
3515 stack
[++sp
] = get_context_reg(module
, csw
, context
, reg
) + tmp
;
3517 case DW_OP_deref_size
:
3518 sz
= dwarf2_parse_byte(&ctx
);
3519 if (!sw_read_mem(csw
, stack
[sp
], &tmp
, sz
))
3521 ERR("Couldn't read memory at %s\n", wine_dbgstr_longlong(stack
[sp
]));
3524 /* do integral promotion */
3527 case 1: stack
[sp
] = *(unsigned char*)&tmp
; break;
3528 case 2: stack
[sp
] = *(unsigned short*)&tmp
; break;
3529 case 4: stack
[sp
] = *(unsigned int*)&tmp
; break;
3530 case 8: stack
[sp
] = tmp
; break; /* FIXME: won't work on 32bit platform */
3531 default: FIXME("Unknown size for deref 0x%lx\n", sz
);
3535 FIXME("unhandled opcode %02x\n", opcode
);
3541 static void apply_frame_state(const struct module
* module
, struct cpu_stack_walk
* csw
,
3542 union ctx
*context
, struct frame_state
*state
, DWORD64
*cfa
)
3546 union ctx new_context
= *context
;
3548 switch (state
->cfa_rule
)
3550 case RULE_EXPRESSION
:
3551 *cfa
= eval_expression(module
, csw
, (const unsigned char*)state
->cfa_offset
, context
);
3552 if (!sw_read_mem(csw
, *cfa
, cfa
, csw
->cpu
->word_size
))
3554 WARN("Couldn't read memory at %s\n", wine_dbgstr_longlong(*cfa
));
3558 case RULE_VAL_EXPRESSION
:
3559 *cfa
= eval_expression(module
, csw
, (const unsigned char*)state
->cfa_offset
, context
);
3562 *cfa
= get_context_reg(module
, csw
, context
, state
->cfa_reg
) + state
->cfa_offset
;
3567 for (i
= 0; i
< NB_FRAME_REGS
; i
++)
3569 switch (state
->rules
[i
])
3572 case RULE_UNDEFINED
:
3575 case RULE_CFA_OFFSET
:
3576 set_context_reg(module
, csw
, &new_context
, i
, *cfa
+ state
->regs
[i
], TRUE
);
3578 case RULE_OTHER_REG
:
3579 copy_context_reg(module
, csw
, &new_context
, i
, context
, state
->regs
[i
]);
3581 case RULE_EXPRESSION
:
3582 value
= eval_expression(module
, csw
, (const unsigned char*)state
->regs
[i
], context
);
3583 set_context_reg(module
, csw
, &new_context
, i
, value
, TRUE
);
3585 case RULE_VAL_EXPRESSION
:
3586 value
= eval_expression(module
, csw
, (const unsigned char*)state
->regs
[i
], context
);
3587 set_context_reg(module
, csw
, &new_context
, i
, value
, FALSE
);
3591 *context
= new_context
;
3594 static BOOL
dwarf2_fetch_frame_info(struct module
* module
, struct cpu
* cpu
, LONG_PTR ip
, struct frame_info
* info
)
3596 dwarf2_traverse_context_t cie_ctx
, fde_ctx
;
3597 struct module_format
* modfmt
;
3598 const unsigned char* end
;
3601 modfmt
= module
->format_info
[DFI_DWARF
];
3602 if (!modfmt
) return FALSE
;
3603 memset(info
, 0, sizeof(*info
));
3604 fde_ctx
.data
= modfmt
->u
.dwarf2_info
->eh_frame
.address
;
3605 fde_ctx
.end_data
= fde_ctx
.data
+ modfmt
->u
.dwarf2_info
->eh_frame
.size
;
3606 /* let offsets relative to the eh_frame sections be correctly computed, as we'll map
3607 * in this process the IMAGE section at a different address as the one expected by
3610 delta
= module
->module
.BaseOfImage
+ modfmt
->u
.dwarf2_info
->eh_frame
.rva
-
3611 (DWORD_PTR
)modfmt
->u
.dwarf2_info
->eh_frame
.address
;
3612 if (!dwarf2_get_cie(ip
, module
, delta
, &fde_ctx
, &cie_ctx
, info
, TRUE
))
3614 fde_ctx
.data
= modfmt
->u
.dwarf2_info
->debug_frame
.address
;
3615 fde_ctx
.end_data
= fde_ctx
.data
+ modfmt
->u
.dwarf2_info
->debug_frame
.size
;
3616 delta
= module
->reloc_delta
;
3617 if (!dwarf2_get_cie(ip
, module
, delta
, &fde_ctx
, &cie_ctx
, info
, FALSE
))
3619 TRACE("Couldn't find information for %lx\n", ip
);
3624 TRACE("function %lx/%lx code_align %lu data_align %ld retaddr %s\n",
3625 ip
, info
->ip
, info
->code_align
, info
->data_align
,
3626 cpu
->fetch_regname(cpu
->map_dwarf_register(info
->retaddr_reg
, module
, TRUE
)));
3630 execute_cfa_instructions(module
, &cie_ctx
, ip
, info
);
3632 if (info
->aug_z_format
) /* get length of augmentation data */
3634 ULONG_PTR len
= dwarf2_leb128_as_unsigned(&fde_ctx
);
3635 end
= fde_ctx
.data
+ len
;
3638 dwarf2_parse_augmentation_ptr(&fde_ctx
, info
->lsda_encoding
, modfmt
->u
.dwarf2_info
->word_size
); /* handler_data */
3639 if (end
) fde_ctx
.data
= end
;
3641 execute_cfa_instructions(module
, &fde_ctx
, ip
, info
);
3646 /***********************************************************************
3647 * dwarf2_virtual_unwind
3650 BOOL
dwarf2_virtual_unwind(struct cpu_stack_walk
*csw
, ULONG_PTR ip
,
3651 union ctx
*context
, DWORD64
*cfa
)
3653 struct module_pair pair
;
3654 struct frame_info info
;
3656 if (!module_init_pair(&pair
, csw
->hProcess
, ip
)) return FALSE
;
3657 if (!dwarf2_fetch_frame_info(pair
.effective
, csw
->cpu
, ip
, &info
)) return FALSE
;
3659 /* if at very beginning of function, return and use default unwinder */
3660 if (ip
== info
.ip
) return FALSE
;
3662 /* if there is no information about retaddr, use default unwinder */
3663 if (info
.state
.rules
[info
.retaddr_reg
] == RULE_UNSET
) return FALSE
;
3665 apply_frame_state(pair
.effective
, csw
, context
, &info
.state
, cfa
);
3670 static BOOL
compute_call_frame_cfa(struct module
* module
, ULONG_PTR ip
, struct location
* frame
)
3672 struct frame_info info
;
3674 if (!dwarf2_fetch_frame_info(module
, dbghelp_current_cpu
, ip
, &info
)) return FALSE
;
3676 /* beginning of function, or no available dwarf information ? */
3677 if (ip
== info
.ip
|| info
.state
.rules
[info
.retaddr_reg
] == RULE_UNSET
)
3679 /* fake the default unwinder */
3680 frame
->kind
= loc_regrel
;
3681 frame
->reg
= dbghelp_current_cpu
->frame_regno
;
3682 frame
->offset
= dbghelp_current_cpu
->word_size
; /* FIXME stack direction */
3686 /* we expect to translate the call_frame_cfa into a regrel location...
3687 * that should cover most of the cases
3689 switch (info
.state
.cfa_rule
)
3691 case RULE_EXPRESSION
:
3692 FIXME("Too complex expression for frame_CFA resolution (RULE_EXPRESSION)\n");
3694 case RULE_VAL_EXPRESSION
:
3695 FIXME("Too complex expression for frame_CFA resolution (RULE_VAL_EXPRESSION)\n");
3698 frame
->kind
= loc_regrel
;
3699 frame
->reg
= dbghelp_current_cpu
->map_dwarf_register(info
.state
.cfa_reg
, module
, TRUE
);
3700 frame
->offset
= info
.state
.cfa_offset
;
3707 static void dwarf2_location_compute(struct process
* pcs
,
3708 const struct module_format
* modfmt
,
3709 const struct symt_function
* func
,
3710 struct location
* loc
)
3712 struct location frame
;
3715 dwarf2_traverse_context_t lctx
;
3716 const dwarf2_cuhead_t
* head
= get_cuhead_from_func(func
);
3720 WARN("We'd expect function %s's container to be a valid compiland with dwarf inforamation\n",
3721 debugstr_a(func
->hash_elt
.name
));
3722 err
= loc_err_internal
;
3726 /* instruction pointer relative to compiland's start */
3727 ip
= pcs
->localscope_pc
- ((struct symt_compiland
*)func
->container
)->address
;
3729 if ((err
= loc_compute_frame(pcs
, modfmt
, func
, ip
, head
, &frame
)) == 0)
3733 case loc_dwarf2_location_list
:
3734 /* Then, if the variable has a location list, find it !! */
3735 if (dwarf2_lookup_loclist(modfmt
, head
,
3736 modfmt
->u
.dwarf2_info
->debug_loc
.address
+ loc
->offset
,
3739 err
= loc_err_out_of_scope
;
3741 case loc_dwarf2_block
:
3742 /* or if we have a copy of an existing block, get ready for it */
3744 unsigned* ptr
= (unsigned*)loc
->offset
;
3746 lctx
.data
= (const BYTE
*)(ptr
+ 1);
3747 lctx
.end_data
= lctx
.data
+ *ptr
;
3750 /* now get the variable */
3751 err
= compute_location(modfmt
->module
, head
,
3752 &lctx
, loc
, pcs
->handle
, &frame
);
3759 WARN("Unsupported local kind %d\n", loc
->kind
);
3760 err
= loc_err_internal
;
3766 loc
->kind
= loc_register
;
3771 static void *zalloc(void *priv
, uInt items
, uInt sz
)
3773 return HeapAlloc(GetProcessHeap(), 0, items
* sz
);
3776 static void zfree(void *priv
, void *addr
)
3778 HeapFree(GetProcessHeap(), 0, addr
);
3781 static inline BOOL
dwarf2_init_zsection(dwarf2_section_t
* section
,
3782 const char* zsectname
,
3783 struct image_section_map
* ism
)
3790 BYTE
*addr
, *sect
= (BYTE
*)image_map_section(ism
);
3791 size_t sz
= image_get_map_size(ism
);
3793 if (sz
<= 12 || memcmp(sect
, "ZLIB", 4))
3795 ERR("invalid compressed section %s\n", debugstr_a(zsectname
));
3799 #ifdef WORDS_BIGENDIAN
3800 li
.u
.HighPart
= *(DWORD
*)§
[4];
3801 li
.u
.LowPart
= *(DWORD
*)§
[8];
3803 li
.u
.HighPart
= RtlUlongByteSwap(*(DWORD
*)§
[4]);
3804 li
.u
.LowPart
= RtlUlongByteSwap(*(DWORD
*)§
[8]);
3807 addr
= HeapAlloc(GetProcessHeap(), 0, li
.QuadPart
);
3811 z
.next_in
= §
[12];
3812 z
.avail_in
= sz
- 12;
3817 res
= inflateInit(&z
);
3820 FIXME("inflateInit failed with %i / %s\n", res
, debugstr_a(z
.msg
));
3825 z
.next_out
= addr
+ z
.total_out
;
3826 z
.avail_out
= li
.QuadPart
- z
.total_out
;
3827 res
= inflate(&z
, Z_FINISH
);
3828 } while (z
.avail_in
&& res
== Z_STREAM_END
);
3830 if (res
!= Z_STREAM_END
)
3832 FIXME("Decompression failed with %i / %s\n", res
, debugstr_a(z
.msg
));
3837 section
->compressed
= TRUE
;
3838 section
->address
= addr
;
3839 section
->rva
= image_get_map_rva(ism
);
3840 section
->size
= z
.total_out
;
3846 HeapFree(GetProcessHeap(), 0, addr
);
3848 image_unmap_section(ism
);
3852 static inline BOOL
dwarf2_init_section(dwarf2_section_t
* section
, struct image_file_map
* fmap
,
3853 const char* sectname
, const char* zsectname
,
3854 struct image_section_map
* ism
)
3856 struct image_section_map local_ism
;
3858 if (!ism
) ism
= &local_ism
;
3860 section
->compressed
= FALSE
;
3861 if (image_find_section(fmap
, sectname
, ism
))
3863 section
->address
= (const BYTE
*)image_map_section(ism
);
3864 section
->size
= image_get_map_size(ism
);
3865 section
->rva
= image_get_map_rva(ism
);
3869 section
->address
= NULL
;
3873 if (zsectname
&& image_find_section(fmap
, zsectname
, ism
))
3875 return dwarf2_init_zsection(section
, zsectname
, ism
);
3881 static inline void dwarf2_fini_section(dwarf2_section_t
* section
)
3883 if (section
->compressed
)
3884 HeapFree(GetProcessHeap(), 0, (void*)section
->address
);
3887 static void dwarf2_module_remove(struct process
* pcs
, struct module_format
* modfmt
)
3889 dwarf2_fini_section(&modfmt
->u
.dwarf2_info
->debug_loc
);
3890 dwarf2_fini_section(&modfmt
->u
.dwarf2_info
->debug_frame
);
3891 free(modfmt
->u
.dwarf2_info
->cuheads
);
3892 HeapFree(GetProcessHeap(), 0, modfmt
);
3895 static BOOL
dwarf2_load_CU_module(dwarf2_parse_module_context_t
* module_ctx
, struct module
* module
,
3896 dwarf2_section_t
* sections
, ULONG_PTR load_offset
,
3897 const struct elf_thunk_area
* thunks
, BOOL is_dwz
)
3899 dwarf2_traverse_context_t mod_ctx
;
3902 module_ctx
->sections
= sections
;
3903 module_ctx
->module
= module
;
3904 module_ctx
->thunks
= thunks
;
3905 module_ctx
->load_offset
= load_offset
;
3906 memset(module_ctx
->symt_cache
, 0, sizeof(module_ctx
->symt_cache
));
3907 module_ctx
->symt_cache
[sc_void
] = &symt_new_basic(module_ctx
->module
, btVoid
, "void", 0)->symt
;
3908 module_ctx
->symt_cache
[sc_unknown
] = &symt_new_basic(module_ctx
->module
, btNoType
, "# unknown", 0)->symt
;
3909 vector_init(&module_ctx
->unit_contexts
, sizeof(dwarf2_parse_context_t
), 16);
3910 module_ctx
->cu_versions
= 0;
3912 /* phase I: parse all CU heads */
3913 mod_ctx
.data
= sections
[section_debug
].address
;
3914 mod_ctx
.end_data
= mod_ctx
.data
+ sections
[section_debug
].size
;
3915 while (mod_ctx
.data
< mod_ctx
.end_data
)
3917 dwarf2_parse_context_t
* unit_ctx
= vector_add(&module_ctx
->unit_contexts
, &module_ctx
->module
->pool
);
3919 unit_ctx
->module_ctx
= module_ctx
;
3920 dwarf2_parse_compilation_unit_head(unit_ctx
, &mod_ctx
);
3923 /* phase2: load content of all CU
3924 * If this is a DWZ alternate module, don't load all debug_info at once
3925 * wait for main module to ask for them (it's likely it won't need them all)
3926 * Doing this can lead to a huge performance improvement.
3929 for (i
= 0; i
< module_ctx
->unit_contexts
.num_elts
; ++i
)
3930 dwarf2_parse_compilation_unit((dwarf2_parse_context_t
*)vector_at(&module_ctx
->unit_contexts
, i
));
3935 static dwarf2_dwz_alternate_t
* dwarf2_load_dwz(struct image_file_map
* fmap
, struct module
* module
)
3937 struct image_file_map
* fmap_dwz
;
3938 dwarf2_dwz_alternate_t
* dwz
;
3940 fmap_dwz
= image_load_debugaltlink(fmap
, module
);
3941 if (!fmap_dwz
) return NULL
;
3942 if (!(dwz
= HeapAlloc(GetProcessHeap(), 0, sizeof(*dwz
))))
3944 image_unmap_file(fmap_dwz
);
3945 HeapFree(GetProcessHeap(), 0, fmap_dwz
);
3949 dwz
->fmap
= fmap_dwz
;
3950 dwarf2_init_section(&dwz
->sections
[section_debug
], fmap_dwz
, ".debug_info", ".zdebug_info", &dwz
->sectmap
[section_debug
]);
3951 dwarf2_init_section(&dwz
->sections
[section_abbrev
], fmap_dwz
, ".debug_abbrev", ".zdebug_abbrev", &dwz
->sectmap
[section_abbrev
]);
3952 dwarf2_init_section(&dwz
->sections
[section_string
], fmap_dwz
, ".debug_str", ".zdebug_str", &dwz
->sectmap
[section_string
]);
3953 dwarf2_init_section(&dwz
->sections
[section_line
], fmap_dwz
, ".debug_line", ".zdebug_line", &dwz
->sectmap
[section_line
]);
3954 dwarf2_init_section(&dwz
->sections
[section_ranges
], fmap_dwz
, ".debug_ranges", ".zdebug_ranges", &dwz
->sectmap
[section_ranges
]);
3956 dwz
->module_ctx
.dwz
= NULL
;
3957 dwarf2_load_CU_module(&dwz
->module_ctx
, module
, dwz
->sections
, 0/*FIXME*/, NULL
, TRUE
);
3961 static void dwarf2_unload_dwz(dwarf2_dwz_alternate_t
* dwz
)
3964 dwarf2_fini_section(&dwz
->sections
[section_debug
]);
3965 dwarf2_fini_section(&dwz
->sections
[section_abbrev
]);
3966 dwarf2_fini_section(&dwz
->sections
[section_string
]);
3967 dwarf2_fini_section(&dwz
->sections
[section_line
]);
3968 dwarf2_fini_section(&dwz
->sections
[section_ranges
]);
3970 image_unmap_section(&dwz
->sectmap
[section_debug
]);
3971 image_unmap_section(&dwz
->sectmap
[section_abbrev
]);
3972 image_unmap_section(&dwz
->sectmap
[section_string
]);
3973 image_unmap_section(&dwz
->sectmap
[section_line
]);
3974 image_unmap_section(&dwz
->sectmap
[section_ranges
]);
3976 image_unmap_file(dwz
->fmap
);
3977 HeapFree(GetProcessHeap(), 0, dwz
);
3980 static BOOL
dwarf2_unload_CU_module(dwarf2_parse_module_context_t
* module_ctx
)
3983 for (i
= 0; i
< module_ctx
->unit_contexts
.num_elts
; ++i
)
3985 dwarf2_parse_context_t
* unit
= vector_at(&module_ctx
->unit_contexts
, i
);
3986 if (unit
->status
!= UNIT_ERROR
)
3987 pool_destroy(&unit
->pool
);
3989 dwarf2_unload_dwz(module_ctx
->dwz
);
3993 BOOL
dwarf2_parse(struct module
* module
, ULONG_PTR load_offset
,
3994 const struct elf_thunk_area
* thunks
,
3995 struct image_file_map
* fmap
)
3997 dwarf2_section_t eh_frame
, section
[section_max
];
3998 struct image_section_map debug_sect
, debug_str_sect
, debug_abbrev_sect
,
3999 debug_line_sect
, debug_ranges_sect
, eh_frame_sect
;
4001 struct module_format
* dwarf2_modfmt
;
4002 dwarf2_parse_module_context_t module_ctx
;
4004 if (!dwarf2_init_section(&eh_frame
, fmap
, ".eh_frame", NULL
, &eh_frame_sect
))
4005 /* lld produces .eh_fram to avoid generating a long name */
4006 dwarf2_init_section(&eh_frame
, fmap
, ".eh_fram", NULL
, &eh_frame_sect
);
4007 dwarf2_init_section(§ion
[section_debug
], fmap
, ".debug_info", ".zdebug_info", &debug_sect
);
4008 dwarf2_init_section(§ion
[section_abbrev
], fmap
, ".debug_abbrev", ".zdebug_abbrev", &debug_abbrev_sect
);
4009 dwarf2_init_section(§ion
[section_string
], fmap
, ".debug_str", ".zdebug_str", &debug_str_sect
);
4010 dwarf2_init_section(§ion
[section_line
], fmap
, ".debug_line", ".zdebug_line", &debug_line_sect
);
4011 dwarf2_init_section(§ion
[section_ranges
], fmap
, ".debug_ranges", ".zdebug_ranges", &debug_ranges_sect
);
4013 /* to do anything useful we need either .eh_frame or .debug_info */
4014 if ((!eh_frame
.address
|| eh_frame
.address
== IMAGE_NO_MAP
) &&
4015 (!section
[section_debug
].address
|| section
[section_debug
].address
== IMAGE_NO_MAP
))
4021 if (fmap
->modtype
== DMT_ELF
&& debug_sect
.fmap
)
4023 /* debug info might have a different base address than .so file
4024 * when elf file is prelinked after splitting off debug info
4025 * adjust symbol base addresses accordingly
4027 load_offset
+= fmap
->u
.elf
.elf_start
- debug_sect
.fmap
->u
.elf
.elf_start
;
4030 TRACE("Loading Dwarf2 information for %s\n", debugstr_w(module
->modulename
));
4032 dwarf2_modfmt
= HeapAlloc(GetProcessHeap(), 0,
4033 sizeof(*dwarf2_modfmt
) + sizeof(*dwarf2_modfmt
->u
.dwarf2_info
));
4039 dwarf2_modfmt
->module
= module
;
4040 dwarf2_modfmt
->remove
= dwarf2_module_remove
;
4041 dwarf2_modfmt
->loc_compute
= dwarf2_location_compute
;
4042 dwarf2_modfmt
->u
.dwarf2_info
= (struct dwarf2_module_info_s
*)(dwarf2_modfmt
+ 1);
4043 dwarf2_modfmt
->u
.dwarf2_info
->word_size
= fmap
->addr_size
/ 8; /* set the word_size for eh_frame parsing */
4044 dwarf2_modfmt
->module
->format_info
[DFI_DWARF
] = dwarf2_modfmt
;
4046 /* As we'll need later some sections' content, we won't unmap these
4047 * sections upon existing this function
4049 dwarf2_init_section(&dwarf2_modfmt
->u
.dwarf2_info
->debug_loc
, fmap
, ".debug_loc", ".zdebug_loc", NULL
);
4050 dwarf2_init_section(&dwarf2_modfmt
->u
.dwarf2_info
->debug_frame
, fmap
, ".debug_frame", ".zdebug_frame", NULL
);
4051 dwarf2_modfmt
->u
.dwarf2_info
->eh_frame
= eh_frame
;
4052 dwarf2_modfmt
->u
.dwarf2_info
->cuheads
= NULL
;
4053 dwarf2_modfmt
->u
.dwarf2_info
->num_cuheads
= 0;
4055 module_ctx
.dwz
= dwarf2_load_dwz(fmap
, module
);
4056 dwarf2_load_CU_module(&module_ctx
, module
, section
, load_offset
, thunks
, FALSE
);
4058 dwarf2_modfmt
->module
->module
.SymType
= SymDia
;
4059 /* hide dwarf versions in CVSig
4060 * bits 24-31 will be set according to found dwarf version
4061 * different CU can have different dwarf version, so use a bit per version (version 2 => b24)
4063 dwarf2_modfmt
->module
->module
.CVSig
= 'D' | ('W' << 8) | ('F' << 16) | ((module_ctx
.cu_versions
& 0xFF) << 24);
4064 /* FIXME: we could have a finer grain here */
4065 dwarf2_modfmt
->module
->module
.GlobalSymbols
= TRUE
;
4066 dwarf2_modfmt
->module
->module
.TypeInfo
= TRUE
;
4067 dwarf2_modfmt
->module
->module
.SourceIndexed
= TRUE
;
4068 dwarf2_modfmt
->module
->module
.Publics
= TRUE
;
4070 dwarf2_unload_CU_module(&module_ctx
);
4073 dwarf2_fini_section(§ion
[section_debug
]);
4074 dwarf2_fini_section(§ion
[section_abbrev
]);
4075 dwarf2_fini_section(§ion
[section_string
]);
4076 dwarf2_fini_section(§ion
[section_line
]);
4077 dwarf2_fini_section(§ion
[section_ranges
]);
4079 image_unmap_section(&debug_sect
);
4080 image_unmap_section(&debug_abbrev_sect
);
4081 image_unmap_section(&debug_str_sect
);
4082 image_unmap_section(&debug_line_sect
);
4083 image_unmap_section(&debug_ranges_sect
);
4084 if (!ret
) image_unmap_section(&eh_frame_sect
);