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
27 #include <sys/types.h>
29 #ifdef HAVE_SYS_STAT_H
30 # include <sys/stat.h>
32 #ifdef HAVE_SYS_MMAN_H
56 #include "dbghelp_private.h"
57 #include "image_private.h"
59 #include "wine/debug.h"
61 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp_dwarf
);
65 * o unspecified parameters
67 * o Debug{Start|End}Point
70 * o proper types loading (nesting)
74 static void dump(const void* ptr
, unsigned len
)
78 static const char hexof
[] = "0123456789abcdef";
81 for (i
= 0; i
< len
; i
+= 16)
83 sprintf(msg
, "%08x: ", i
);
84 memset(msg
+ 10, ' ', 3 * 16 + 1 + 16);
85 for (j
= 0; j
< min(16, len
- i
); j
++)
87 msg
[10 + 3 * j
+ 0] = hexof
[x
[i
+ j
] >> 4];
88 msg
[10 + 3 * j
+ 1] = hexof
[x
[i
+ j
] & 15];
89 msg
[10 + 3 * j
+ 2] = ' ';
90 msg
[10 + 3 * 16 + 1 + j
] = (x
[i
+ j
] >= 0x20 && x
[i
+ j
] < 0x7f) ?
93 msg
[10 + 3 * 16] = ' ';
94 msg
[10 + 3 * 16 + 1 + 16] = '\0';
103 * http://www.eagercon.com/dwarf/dwarf3std.htm
104 * http://www.eagercon.com/dwarf/dwarf-2.0.0.pdf
106 * dwarf2.h: http://www.hakpetzna.com/b/binutils/dwarf2_8h-source.html
108 * example of projects who do dwarf2 parsing:
109 * http://www.x86-64.org/cgi-bin/cvsweb.cgi/binutils.dead/binutils/readelf.c?rev=1.1.1.2
110 * http://elis.ugent.be/diota/log/ltrace_elf.c
118 typedef struct dwarf2_abbrev_entry_attr_s
120 unsigned long attribute
;
122 struct dwarf2_abbrev_entry_attr_s
* next
;
123 } dwarf2_abbrev_entry_attr_t
;
125 typedef struct dwarf2_abbrev_entry_s
127 unsigned long entry_code
;
129 unsigned char have_child
;
131 dwarf2_abbrev_entry_attr_t
* attrs
;
132 } dwarf2_abbrev_entry_t
;
137 const unsigned char* ptr
;
143 enum {attr_direct
, attr_abstract_origin
, attr_specification
} gotten_from
;
146 unsigned long uvalue
;
150 struct dwarf2_block block
;
154 typedef struct dwarf2_debug_info_s
156 const dwarf2_abbrev_entry_t
*abbrev
;
158 const unsigned char** data
;
159 struct vector children
;
160 struct dwarf2_debug_info_s
* parent
;
161 } dwarf2_debug_info_t
;
163 typedef struct dwarf2_section_s
166 const unsigned char* address
;
171 enum dwarf2_sections
{section_debug
, section_string
, section_abbrev
, section_line
, section_ranges
, section_max
};
173 typedef struct dwarf2_traverse_context_s
175 const unsigned char* data
;
176 const unsigned char* end_data
;
177 unsigned char word_size
;
178 } dwarf2_traverse_context_t
;
180 /* symt_cache indexes */
187 typedef struct dwarf2_parse_context_s
189 const dwarf2_section_t
* sections
;
192 struct module
* module
;
193 struct symt_compiland
* compiland
;
194 const struct elf_thunk_area
*thunks
;
195 struct sparse_array abbrev_table
;
196 struct sparse_array debug_info_table
;
197 unsigned long load_offset
;
198 unsigned long ref_offset
;
199 struct symt
* symt_cache
[sc_num
]; /* void, int1, int2, int4 */
201 } dwarf2_parse_context_t
;
203 /* stored in the dbghelp's module internal structure for later reuse */
204 struct dwarf2_module_info_s
206 dwarf2_section_t debug_loc
;
207 dwarf2_section_t debug_frame
;
208 dwarf2_section_t eh_frame
;
209 unsigned char word_size
;
212 #define loc_dwarf2_location_list (loc_user + 0)
213 #define loc_dwarf2_block (loc_user + 1)
215 /* forward declarations */
216 static struct symt
* dwarf2_parse_enumeration_type(dwarf2_parse_context_t
* ctx
, dwarf2_debug_info_t
* entry
);
218 static unsigned char dwarf2_get_byte(const unsigned char* ptr
)
223 static unsigned char dwarf2_parse_byte(dwarf2_traverse_context_t
* ctx
)
225 unsigned char uvalue
= dwarf2_get_byte(ctx
->data
);
230 static unsigned short dwarf2_get_u2(const unsigned char* ptr
)
232 return *(const UINT16
*)ptr
;
235 static unsigned short dwarf2_parse_u2(dwarf2_traverse_context_t
* ctx
)
237 unsigned short uvalue
= dwarf2_get_u2(ctx
->data
);
242 static unsigned long dwarf2_get_u4(const unsigned char* ptr
)
244 return *(const UINT32
*)ptr
;
247 static unsigned long dwarf2_parse_u4(dwarf2_traverse_context_t
* ctx
)
249 unsigned long uvalue
= dwarf2_get_u4(ctx
->data
);
254 static DWORD64
dwarf2_get_u8(const unsigned char* ptr
)
256 return *(const UINT64
*)ptr
;
259 static DWORD64
dwarf2_parse_u8(dwarf2_traverse_context_t
* ctx
)
261 DWORD64 uvalue
= dwarf2_get_u8(ctx
->data
);
266 static unsigned long dwarf2_get_leb128_as_unsigned(const unsigned char* ptr
, const unsigned char** end
)
268 unsigned long ret
= 0;
274 byte
= dwarf2_get_byte(ptr
++);
275 ret
|= (byte
& 0x7f) << shift
;
277 } while (byte
& 0x80);
283 static unsigned long dwarf2_leb128_as_unsigned(dwarf2_traverse_context_t
* ctx
)
289 ret
= dwarf2_get_leb128_as_unsigned(ctx
->data
, &ctx
->data
);
294 static long dwarf2_get_leb128_as_signed(const unsigned char* ptr
, const unsigned char** end
)
299 const unsigned size
= sizeof(int) * 8;
303 byte
= dwarf2_get_byte(ptr
++);
304 ret
|= (byte
& 0x7f) << shift
;
306 } while (byte
& 0x80);
309 /* as spec: sign bit of byte is 2nd high order bit (80x40)
310 * -> 0x80 is used as flag.
312 if ((shift
< size
) && (byte
& 0x40))
314 ret
|= - (1 << shift
);
319 static long dwarf2_leb128_as_signed(dwarf2_traverse_context_t
* ctx
)
325 ret
= dwarf2_get_leb128_as_signed(ctx
->data
, &ctx
->data
);
329 static unsigned dwarf2_leb128_length(const dwarf2_traverse_context_t
* ctx
)
332 for (ret
= 0; ctx
->data
[ret
] & 0x80; ret
++);
336 /******************************************************************
339 * Returns an address.
340 * We assume that in all cases word size from Dwarf matches the size of
341 * addresses in platform where the exec is compiled.
343 static unsigned long dwarf2_get_addr(const unsigned char* ptr
, unsigned word_size
)
350 ret
= dwarf2_get_u4(ptr
);
353 ret
= dwarf2_get_u8(ptr
);
356 FIXME("Unsupported Word Size %u\n", word_size
);
362 static unsigned long dwarf2_parse_addr(dwarf2_traverse_context_t
* ctx
)
364 unsigned long ret
= dwarf2_get_addr(ctx
->data
, ctx
->word_size
);
365 ctx
->data
+= ctx
->word_size
;
369 static const char* dwarf2_debug_traverse_ctx(const dwarf2_traverse_context_t
* ctx
)
371 return wine_dbg_sprintf("ctx(%p)", ctx
->data
);
374 static const char* dwarf2_debug_ctx(const dwarf2_parse_context_t
* ctx
)
376 return wine_dbg_sprintf("ctx(%p,%s)",
377 ctx
, debugstr_w(ctx
->module
->module
.ModuleName
));
380 static const char* dwarf2_debug_di(const dwarf2_debug_info_t
* di
)
382 return wine_dbg_sprintf("debug_info(abbrev:%p,symt:%p)",
383 di
->abbrev
, di
->symt
);
386 static dwarf2_abbrev_entry_t
*
387 dwarf2_abbrev_table_find_entry(const struct sparse_array
* abbrev_table
,
388 unsigned long entry_code
)
390 assert( NULL
!= abbrev_table
);
391 return sparse_array_find(abbrev_table
, entry_code
);
394 static void dwarf2_parse_abbrev_set(dwarf2_traverse_context_t
* abbrev_ctx
,
395 struct sparse_array
* abbrev_table
,
398 unsigned long entry_code
;
399 dwarf2_abbrev_entry_t
* abbrev_entry
;
400 dwarf2_abbrev_entry_attr_t
* new = NULL
;
401 dwarf2_abbrev_entry_attr_t
* last
= NULL
;
402 unsigned long attribute
;
405 assert( NULL
!= abbrev_ctx
);
407 TRACE("%s, end at %p\n",
408 dwarf2_debug_traverse_ctx(abbrev_ctx
), abbrev_ctx
->end_data
);
410 sparse_array_init(abbrev_table
, sizeof(dwarf2_abbrev_entry_t
), 32);
411 while (abbrev_ctx
->data
< abbrev_ctx
->end_data
)
413 TRACE("now at %s\n", dwarf2_debug_traverse_ctx(abbrev_ctx
));
414 entry_code
= dwarf2_leb128_as_unsigned(abbrev_ctx
);
415 TRACE("found entry_code %lu\n", entry_code
);
418 TRACE("NULL entry code at %s\n", dwarf2_debug_traverse_ctx(abbrev_ctx
));
421 abbrev_entry
= sparse_array_add(abbrev_table
, entry_code
, pool
);
422 assert( NULL
!= abbrev_entry
);
424 abbrev_entry
->entry_code
= entry_code
;
425 abbrev_entry
->tag
= dwarf2_leb128_as_unsigned(abbrev_ctx
);
426 abbrev_entry
->have_child
= dwarf2_parse_byte(abbrev_ctx
);
427 abbrev_entry
->attrs
= NULL
;
428 abbrev_entry
->num_attr
= 0;
430 TRACE("table:(%p,#%u) entry_code(%lu) tag(0x%lx) have_child(%u) -> %p\n",
431 abbrev_table
, sparse_array_length(abbrev_table
),
432 entry_code
, abbrev_entry
->tag
, abbrev_entry
->have_child
, abbrev_entry
);
437 attribute
= dwarf2_leb128_as_unsigned(abbrev_ctx
);
438 form
= dwarf2_leb128_as_unsigned(abbrev_ctx
);
439 if (!attribute
) break;
441 new = pool_alloc(pool
, sizeof(dwarf2_abbrev_entry_attr_t
));
444 new->attribute
= attribute
;
447 if (abbrev_entry
->attrs
) last
->next
= new;
448 else abbrev_entry
->attrs
= new;
450 abbrev_entry
->num_attr
++;
453 TRACE("found %u entries\n", sparse_array_length(abbrev_table
));
456 static void dwarf2_swallow_attribute(dwarf2_traverse_context_t
* ctx
,
457 const dwarf2_abbrev_entry_attr_t
* abbrev_attr
)
461 TRACE("(attr:0x%lx,form:0x%lx)\n", abbrev_attr
->attribute
, abbrev_attr
->form
);
463 switch (abbrev_attr
->form
)
465 case DW_FORM_flag_present
: step
= 0; break;
466 case DW_FORM_ref_addr
:
467 case DW_FORM_addr
: step
= ctx
->word_size
; break;
470 case DW_FORM_ref1
: step
= 1; break;
472 case DW_FORM_ref2
: step
= 2; break;
475 case DW_FORM_strp
: step
= 4; break;
477 case DW_FORM_ref8
: step
= 8; break;
479 case DW_FORM_ref_udata
:
480 case DW_FORM_udata
: step
= dwarf2_leb128_length(ctx
); break;
481 case DW_FORM_string
: step
= strlen((const char*)ctx
->data
) + 1; break;
482 case DW_FORM_block
: step
= dwarf2_leb128_as_unsigned(ctx
); break;
483 case DW_FORM_block1
: step
= dwarf2_parse_byte(ctx
); break;
484 case DW_FORM_block2
: step
= dwarf2_parse_u2(ctx
); break;
485 case DW_FORM_block4
: step
= dwarf2_parse_u4(ctx
); break;
487 FIXME("Unhandled attribute form %lx\n", abbrev_attr
->form
);
493 static void dwarf2_fill_attr(const dwarf2_parse_context_t
* ctx
,
494 const dwarf2_abbrev_entry_attr_t
* abbrev_attr
,
495 const unsigned char* data
,
496 struct attribute
* attr
)
498 attr
->form
= abbrev_attr
->form
;
501 case DW_FORM_ref_addr
:
503 attr
->u
.uvalue
= dwarf2_get_addr(data
,
504 ctx
->module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
);
505 TRACE("addr<0x%lx>\n", attr
->u
.uvalue
);
509 attr
->u
.uvalue
= dwarf2_get_byte(data
);
510 TRACE("flag<0x%lx>\n", attr
->u
.uvalue
);
513 case DW_FORM_flag_present
:
515 TRACE("flag_present\n");
519 attr
->u
.uvalue
= dwarf2_get_byte(data
);
520 TRACE("data1<%lu>\n", attr
->u
.uvalue
);
524 attr
->u
.uvalue
= dwarf2_get_u2(data
);
525 TRACE("data2<%lu>\n", attr
->u
.uvalue
);
529 attr
->u
.uvalue
= dwarf2_get_u4(data
);
530 TRACE("data4<%lu>\n", attr
->u
.uvalue
);
534 attr
->u
.lluvalue
= dwarf2_get_u8(data
);
535 TRACE("data8<%s>\n", wine_dbgstr_longlong(attr
->u
.uvalue
));
539 attr
->u
.uvalue
= ctx
->ref_offset
+ dwarf2_get_byte(data
);
540 TRACE("ref1<0x%lx>\n", attr
->u
.uvalue
);
544 attr
->u
.uvalue
= ctx
->ref_offset
+ dwarf2_get_u2(data
);
545 TRACE("ref2<0x%lx>\n", attr
->u
.uvalue
);
549 attr
->u
.uvalue
= ctx
->ref_offset
+ dwarf2_get_u4(data
);
550 TRACE("ref4<0x%lx>\n", attr
->u
.uvalue
);
554 FIXME("Unhandled 64-bit support\n");
558 attr
->u
.svalue
= dwarf2_get_leb128_as_signed(data
, NULL
);
561 case DW_FORM_ref_udata
:
562 attr
->u
.uvalue
= dwarf2_get_leb128_as_unsigned(data
, NULL
);
566 attr
->u
.uvalue
= dwarf2_get_leb128_as_unsigned(data
, NULL
);
570 attr
->u
.string
= (const char *)data
;
571 TRACE("string<%s>\n", debugstr_a(attr
->u
.string
));
576 unsigned long offset
= dwarf2_get_u4(data
);
577 attr
->u
.string
= (const char*)ctx
->sections
[section_string
].address
+ offset
;
579 TRACE("strp<%s>\n", debugstr_a(attr
->u
.string
));
583 attr
->u
.block
.size
= dwarf2_get_leb128_as_unsigned(data
, &attr
->u
.block
.ptr
);
587 attr
->u
.block
.size
= dwarf2_get_byte(data
);
588 attr
->u
.block
.ptr
= data
+ 1;
592 attr
->u
.block
.size
= dwarf2_get_u2(data
);
593 attr
->u
.block
.ptr
= data
+ 2;
597 attr
->u
.block
.size
= dwarf2_get_u4(data
);
598 attr
->u
.block
.ptr
= data
+ 4;
602 FIXME("Unhandled attribute form %lx\n", abbrev_attr
->form
);
607 static BOOL
dwarf2_find_attribute(const dwarf2_parse_context_t
* ctx
,
608 const dwarf2_debug_info_t
* di
,
609 unsigned at
, struct attribute
* attr
)
611 unsigned i
, refidx
= 0;
612 dwarf2_abbrev_entry_attr_t
* abbrev_attr
;
613 dwarf2_abbrev_entry_attr_t
* ref_abbrev_attr
= NULL
;
615 attr
->gotten_from
= attr_direct
;
618 ref_abbrev_attr
= NULL
;
619 for (i
= 0, abbrev_attr
= di
->abbrev
->attrs
; abbrev_attr
; i
++, abbrev_attr
= abbrev_attr
->next
)
621 if (abbrev_attr
->attribute
== at
)
623 dwarf2_fill_attr(ctx
, abbrev_attr
, di
->data
[i
], attr
);
626 if ((abbrev_attr
->attribute
== DW_AT_abstract_origin
||
627 abbrev_attr
->attribute
== DW_AT_specification
) &&
631 FIXME("two references %lx and %lx\n", ref_abbrev_attr
->attribute
, abbrev_attr
->attribute
);
632 ref_abbrev_attr
= abbrev_attr
;
634 attr
->gotten_from
= (abbrev_attr
->attribute
== DW_AT_abstract_origin
) ?
635 attr_abstract_origin
: attr_specification
;
638 /* do we have either an abstract origin or a specification debug entry to look into ? */
639 if (!ref_abbrev_attr
) break;
640 dwarf2_fill_attr(ctx
, ref_abbrev_attr
, di
->data
[refidx
], attr
);
641 if (!(di
= sparse_array_find(&ctx
->debug_info_table
, attr
->u
.uvalue
)))
642 FIXME("Should have found the debug info entry\n");
647 static void dwarf2_load_one_entry(dwarf2_parse_context_t
*, dwarf2_debug_info_t
*);
649 #define Wine_DW_no_register 0x7FFFFFFF
651 static unsigned dwarf2_map_register(int regno
)
653 if (regno
== Wine_DW_no_register
)
655 FIXME("What the heck map reg 0x%x\n",regno
);
658 return dbghelp_current_cpu
->map_dwarf_register(regno
, FALSE
);
661 static enum location_error
662 compute_location(dwarf2_traverse_context_t
* ctx
, struct location
* loc
,
663 HANDLE hproc
, const struct location
* frame
)
665 DWORD_PTR tmp
, stack
[64];
668 BOOL piece_found
= FALSE
;
672 loc
->kind
= loc_absolute
;
673 loc
->reg
= Wine_DW_no_register
;
675 while (ctx
->data
< ctx
->end_data
)
677 op
= dwarf2_parse_byte(ctx
);
679 if (op
>= DW_OP_lit0
&& op
<= DW_OP_lit31
)
680 stack
[++stk
] = op
- DW_OP_lit0
;
681 else if (op
>= DW_OP_reg0
&& op
<= DW_OP_reg31
)
683 /* dbghelp APIs don't know how to cope with this anyway
684 * (for example 'long long' stored in two registers)
685 * FIXME: We should tell winedbg how to deal with it (sigh)
689 DWORD cvreg
= dwarf2_map_register(op
- DW_OP_reg0
);
690 if (loc
->reg
!= Wine_DW_no_register
)
691 FIXME("Only supporting one reg (%s/%d -> %s/%d)\n",
692 dbghelp_current_cpu
->fetch_regname(loc
->reg
), loc
->reg
,
693 dbghelp_current_cpu
->fetch_regname(cvreg
), cvreg
);
696 loc
->kind
= loc_register
;
698 else if (op
>= DW_OP_breg0
&& op
<= DW_OP_breg31
)
700 /* dbghelp APIs don't know how to cope with this anyway
701 * (for example 'long long' stored in two registers)
702 * FIXME: We should tell winedbg how to deal with it (sigh)
706 DWORD cvreg
= dwarf2_map_register(op
- DW_OP_breg0
);
707 if (loc
->reg
!= Wine_DW_no_register
)
708 FIXME("Only supporting one breg (%s/%d -> %s/%d)\n",
709 dbghelp_current_cpu
->fetch_regname(loc
->reg
), loc
->reg
,
710 dbghelp_current_cpu
->fetch_regname(cvreg
), cvreg
);
713 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
714 loc
->kind
= loc_regrel
;
718 case DW_OP_nop
: break;
719 case DW_OP_addr
: stack
[++stk
] = dwarf2_parse_addr(ctx
); break;
720 case DW_OP_const1u
: stack
[++stk
] = dwarf2_parse_byte(ctx
); break;
721 case DW_OP_const1s
: stack
[++stk
] = dwarf2_parse_byte(ctx
); break;
722 case DW_OP_const2u
: stack
[++stk
] = dwarf2_parse_u2(ctx
); break;
723 case DW_OP_const2s
: stack
[++stk
] = dwarf2_parse_u2(ctx
); break;
724 case DW_OP_const4u
: stack
[++stk
] = dwarf2_parse_u4(ctx
); break;
725 case DW_OP_const4s
: stack
[++stk
] = dwarf2_parse_u4(ctx
); break;
726 case DW_OP_const8u
: stack
[++stk
] = dwarf2_parse_u8(ctx
); break;
727 case DW_OP_const8s
: stack
[++stk
] = dwarf2_parse_u8(ctx
); break;
728 case DW_OP_constu
: stack
[++stk
] = dwarf2_leb128_as_unsigned(ctx
); break;
729 case DW_OP_consts
: stack
[++stk
] = dwarf2_leb128_as_signed(ctx
); break;
730 case DW_OP_dup
: stack
[stk
+ 1] = stack
[stk
]; stk
++; break;
731 case DW_OP_drop
: stk
--; break;
732 case DW_OP_over
: stack
[stk
+ 1] = stack
[stk
- 1]; stk
++; break;
733 case DW_OP_pick
: stack
[stk
+ 1] = stack
[stk
- dwarf2_parse_byte(ctx
)]; stk
++; break;
734 case DW_OP_swap
: tmp
= stack
[stk
]; stack
[stk
] = stack
[stk
-1]; stack
[stk
-1] = tmp
; break;
735 case DW_OP_rot
: tmp
= stack
[stk
]; stack
[stk
] = stack
[stk
-1]; stack
[stk
-1] = stack
[stk
-2]; stack
[stk
-2] = tmp
; break;
736 case DW_OP_abs
: stack
[stk
] = labs(stack
[stk
]); break;
737 case DW_OP_neg
: stack
[stk
] = -stack
[stk
]; break;
738 case DW_OP_not
: stack
[stk
] = ~stack
[stk
]; break;
739 case DW_OP_and
: stack
[stk
-1] &= stack
[stk
]; stk
--; break;
740 case DW_OP_or
: stack
[stk
-1] |= stack
[stk
]; stk
--; break;
741 case DW_OP_minus
: stack
[stk
-1] -= stack
[stk
]; stk
--; break;
742 case DW_OP_mul
: stack
[stk
-1] *= stack
[stk
]; stk
--; break;
743 case DW_OP_plus
: stack
[stk
-1] += stack
[stk
]; stk
--; break;
744 case DW_OP_xor
: stack
[stk
-1] ^= stack
[stk
]; stk
--; break;
745 case DW_OP_shl
: stack
[stk
-1] <<= stack
[stk
]; stk
--; break;
746 case DW_OP_shr
: stack
[stk
-1] >>= stack
[stk
]; stk
--; break;
747 case DW_OP_plus_uconst
: stack
[stk
] += dwarf2_leb128_as_unsigned(ctx
); break;
748 case DW_OP_shra
: stack
[stk
-1] = stack
[stk
-1] / (1 << stack
[stk
]); stk
--; break;
749 case DW_OP_div
: stack
[stk
-1] = stack
[stk
-1] / stack
[stk
]; stk
--; break;
750 case DW_OP_mod
: stack
[stk
-1] = stack
[stk
-1] % stack
[stk
]; stk
--; break;
751 case DW_OP_ge
: stack
[stk
-1] = (stack
[stk
-1] >= stack
[stk
]); stk
--; break;
752 case DW_OP_gt
: stack
[stk
-1] = (stack
[stk
-1] > stack
[stk
]); stk
--; break;
753 case DW_OP_le
: stack
[stk
-1] = (stack
[stk
-1] <= stack
[stk
]); stk
--; break;
754 case DW_OP_lt
: stack
[stk
-1] = (stack
[stk
-1] < stack
[stk
]); stk
--; break;
755 case DW_OP_eq
: stack
[stk
-1] = (stack
[stk
-1] == stack
[stk
]); stk
--; break;
756 case DW_OP_ne
: stack
[stk
-1] = (stack
[stk
-1] != stack
[stk
]); stk
--; break;
757 case DW_OP_skip
: tmp
= dwarf2_parse_u2(ctx
); ctx
->data
+= tmp
; break;
758 case DW_OP_bra
: tmp
= dwarf2_parse_u2(ctx
); if (!stack
[stk
--]) ctx
->data
+= tmp
; break;
760 tmp
= dwarf2_leb128_as_unsigned(ctx
);
763 if (loc
->reg
!= Wine_DW_no_register
)
764 FIXME("Only supporting one reg\n");
765 loc
->reg
= dwarf2_map_register(tmp
);
767 loc
->kind
= loc_register
;
770 tmp
= dwarf2_leb128_as_unsigned(ctx
);
771 if (loc
->reg
!= Wine_DW_no_register
)
772 FIXME("Only supporting one regx\n");
773 loc
->reg
= dwarf2_map_register(tmp
);
774 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
775 loc
->kind
= loc_regrel
;
778 if (loc
->reg
!= Wine_DW_no_register
)
779 FIXME("Only supporting one reg (%s/%d -> -2)\n",
780 dbghelp_current_cpu
->fetch_regname(loc
->reg
), loc
->reg
);
781 if (frame
&& frame
->kind
== loc_register
)
783 loc
->kind
= loc_regrel
;
784 loc
->reg
= frame
->reg
;
785 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
787 else if (frame
&& frame
->kind
== loc_regrel
)
789 loc
->kind
= loc_regrel
;
790 loc
->reg
= frame
->reg
;
791 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
) + frame
->offset
;
795 /* FIXME: this could be later optimized by not recomputing
796 * this very location expression
798 loc
->kind
= loc_dwarf2_block
;
799 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
804 unsigned sz
= dwarf2_leb128_as_unsigned(ctx
);
805 WARN("Not handling OP_piece (size=%d)\n", sz
);
812 FIXME("Unexpected empty stack\n");
813 return loc_err_internal
;
815 if (loc
->reg
!= Wine_DW_no_register
)
817 WARN("Too complex expression for deref\n");
818 return loc_err_too_complex
;
822 DWORD_PTR addr
= stack
[stk
--];
825 if (!ReadProcessMemory(hproc
, (void*)addr
, &deref
, ctx
->word_size
, NULL
))
827 WARN("Couldn't read memory at %lx\n", addr
);
828 return loc_err_cant_read
;
830 stack
[++stk
] = deref
;
834 loc
->kind
= loc_dwarf2_block
;
837 case DW_OP_deref_size
:
840 FIXME("Unexpected empty stack\n");
841 return loc_err_internal
;
843 if (loc
->reg
!= Wine_DW_no_register
)
845 WARN("Too complex expression for deref\n");
846 return loc_err_too_complex
;
850 DWORD_PTR addr
= stack
[stk
--];
851 BYTE derefsize
= dwarf2_parse_byte(ctx
);
854 if (!ReadProcessMemory(hproc
, (void*)addr
, &deref
, derefsize
, NULL
))
856 WARN("Couldn't read memory at %lx\n", addr
);
857 return loc_err_cant_read
;
862 case 1: stack
[++stk
] = *(unsigned char*)&deref
; break;
863 case 2: stack
[++stk
] = *(unsigned short*)&deref
; break;
864 case 4: stack
[++stk
] = *(DWORD
*)&deref
; break;
865 case 8: if (ctx
->word_size
>= derefsize
) stack
[++stk
] = deref
; break;
870 dwarf2_parse_byte(ctx
);
871 loc
->kind
= loc_dwarf2_block
;
874 case DW_OP_stack_value
:
875 /* Expected behaviour is that this is the last instruction of this
876 * expression and just the "top of stack" value should be put to loc->offset. */
879 if (op
< DW_OP_lo_user
) /* as DW_OP_hi_user is 0xFF, we don't need to test against it */
880 FIXME("Unhandled attr op: %x\n", op
);
881 /* FIXME else unhandled extension */
882 return loc_err_internal
;
885 loc
->offset
= stack
[stk
];
889 static BOOL
dwarf2_compute_location_attr(dwarf2_parse_context_t
* ctx
,
890 const dwarf2_debug_info_t
* di
,
892 struct location
* loc
,
893 const struct location
* frame
)
895 struct attribute xloc
;
897 if (!dwarf2_find_attribute(ctx
, di
, dw
, &xloc
)) return FALSE
;
901 case DW_FORM_data1
: case DW_FORM_data2
:
902 case DW_FORM_udata
: case DW_FORM_sdata
:
903 loc
->kind
= loc_absolute
;
905 loc
->offset
= xloc
.u
.uvalue
;
907 case DW_FORM_data4
: case DW_FORM_data8
:
908 loc
->kind
= loc_dwarf2_location_list
;
909 loc
->reg
= Wine_DW_no_register
;
910 loc
->offset
= xloc
.u
.uvalue
;
917 default: FIXME("Unsupported yet form %lx\n", xloc
.form
);
921 /* assume we have a block form */
923 if (xloc
.u
.block
.size
)
925 dwarf2_traverse_context_t lctx
;
926 enum location_error err
;
928 lctx
.data
= xloc
.u
.block
.ptr
;
929 lctx
.end_data
= xloc
.u
.block
.ptr
+ xloc
.u
.block
.size
;
930 lctx
.word_size
= ctx
->module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
;
932 err
= compute_location(&lctx
, loc
, NULL
, frame
);
935 loc
->kind
= loc_error
;
938 else if (loc
->kind
== loc_dwarf2_block
)
940 unsigned* ptr
= pool_alloc(&ctx
->module
->pool
,
941 sizeof(unsigned) + xloc
.u
.block
.size
);
942 *ptr
= xloc
.u
.block
.size
;
943 memcpy(ptr
+ 1, xloc
.u
.block
.ptr
, xloc
.u
.block
.size
);
944 loc
->offset
= (unsigned long)ptr
;
945 compute_location(&lctx
, loc
, NULL
, frame
);
951 static struct symt
* dwarf2_lookup_type(dwarf2_parse_context_t
* ctx
,
952 const dwarf2_debug_info_t
* di
)
954 struct attribute attr
;
955 dwarf2_debug_info_t
* type
;
957 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_type
, &attr
))
959 if (!(type
= sparse_array_find(&ctx
->debug_info_table
, attr
.u
.uvalue
)))
961 FIXME("Unable to find back reference to type %lx\n", attr
.u
.uvalue
);
966 /* load the debug info entity */
967 dwarf2_load_one_entry(ctx
, type
);
969 FIXME("Unable to load forward reference for tag %lx\n", type
->abbrev
->tag
);
974 static const char* dwarf2_get_cpp_name(dwarf2_parse_context_t
* ctx
, dwarf2_debug_info_t
* di
, const char* name
)
977 struct attribute diname
;
978 struct attribute spec
;
980 if (di
->abbrev
->tag
== DW_TAG_compile_unit
) return name
;
982 ctx
->cpp_name
= pool_alloc(&ctx
->pool
, MAX_SYM_NAME
);
983 last
= ctx
->cpp_name
+ MAX_SYM_NAME
- strlen(name
) - 1;
986 /* if the di is a definition, but has also a (previous) declaration, then scope must
987 * be gotten from declaration not definition
989 if (dwarf2_find_attribute(ctx
, di
, DW_AT_specification
, &spec
) && spec
.gotten_from
== attr_direct
)
991 di
= sparse_array_find(&ctx
->debug_info_table
, spec
.u
.uvalue
);
994 FIXME("Should have found the debug info entry\n");
999 for (di
= di
->parent
; di
; di
= di
->parent
)
1001 switch (di
->abbrev
->tag
)
1003 case DW_TAG_namespace
:
1004 case DW_TAG_structure_type
:
1005 case DW_TAG_class_type
:
1006 case DW_TAG_interface_type
:
1007 case DW_TAG_union_type
:
1008 if (dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &diname
))
1010 size_t len
= strlen(diname
.u
.string
);
1012 if (last
< ctx
->cpp_name
) return NULL
;
1013 memcpy(last
, diname
.u
.string
, len
);
1014 last
[len
] = last
[len
+ 1] = ':';
1024 /******************************************************************
1027 * read a range for a given debug_info (either using AT_range attribute, in which
1028 * case we don't return all the details, or using AT_low_pc & AT_high_pc attributes)
1029 * in all cases, range is relative to beginning of compilation unit
1031 static BOOL
dwarf2_read_range(dwarf2_parse_context_t
* ctx
, const dwarf2_debug_info_t
* di
,
1032 unsigned long* plow
, unsigned long* phigh
)
1034 struct attribute range
;
1036 if (dwarf2_find_attribute(ctx
, di
, DW_AT_ranges
, &range
))
1038 dwarf2_traverse_context_t traverse
;
1039 unsigned long low
, high
;
1041 traverse
.data
= ctx
->sections
[section_ranges
].address
+ range
.u
.uvalue
;
1042 traverse
.end_data
= ctx
->sections
[section_ranges
].address
+
1043 ctx
->sections
[section_ranges
].size
;
1044 traverse
.word_size
= ctx
->module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
;
1048 while (traverse
.data
+ 2 * traverse
.word_size
< traverse
.end_data
)
1050 low
= dwarf2_parse_addr(&traverse
);
1051 high
= dwarf2_parse_addr(&traverse
);
1052 if (low
== 0 && high
== 0) break;
1053 if (low
== ULONG_MAX
) FIXME("unsupported yet (base address selection)\n");
1054 if (low
< *plow
) *plow
= low
;
1055 if (high
> *phigh
) *phigh
= high
;
1057 if (*plow
== ULONG_MAX
|| *phigh
== 0) {FIXME("no entry found\n"); return FALSE
;}
1058 if (*plow
== *phigh
) {FIXME("entry found, but low=high\n"); return FALSE
;}
1064 struct attribute low_pc
;
1065 struct attribute high_pc
;
1067 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_low_pc
, &low_pc
) ||
1068 !dwarf2_find_attribute(ctx
, di
, DW_AT_high_pc
, &high_pc
))
1070 *plow
= low_pc
.u
.uvalue
;
1071 *phigh
= high_pc
.u
.uvalue
;
1076 /******************************************************************
1077 * dwarf2_read_one_debug_info
1079 * Loads into memory one debug info entry, and recursively its children (if any)
1081 static BOOL
dwarf2_read_one_debug_info(dwarf2_parse_context_t
* ctx
,
1082 dwarf2_traverse_context_t
* traverse
,
1083 dwarf2_debug_info_t
* parent_di
,
1084 dwarf2_debug_info_t
** pdi
)
1086 const dwarf2_abbrev_entry_t
*abbrev
;
1087 unsigned long entry_code
;
1088 unsigned long offset
;
1089 dwarf2_debug_info_t
* di
;
1090 dwarf2_debug_info_t
* child
;
1091 dwarf2_debug_info_t
** where
;
1092 dwarf2_abbrev_entry_attr_t
* attr
;
1094 struct attribute sibling
;
1096 offset
= traverse
->data
- ctx
->sections
[ctx
->section
].address
;
1097 entry_code
= dwarf2_leb128_as_unsigned(traverse
);
1098 TRACE("found entry_code %lu at 0x%lx\n", entry_code
, offset
);
1104 abbrev
= dwarf2_abbrev_table_find_entry(&ctx
->abbrev_table
, entry_code
);
1107 WARN("Cannot find abbrev entry for %lu at 0x%lx\n", entry_code
, offset
);
1110 di
= sparse_array_add(&ctx
->debug_info_table
, offset
, &ctx
->pool
);
1111 if (!di
) return FALSE
;
1112 di
->abbrev
= abbrev
;
1114 di
->parent
= parent_di
;
1116 if (abbrev
->num_attr
)
1118 di
->data
= pool_alloc(&ctx
->pool
, abbrev
->num_attr
* sizeof(const char*));
1119 for (i
= 0, attr
= abbrev
->attrs
; attr
; i
++, attr
= attr
->next
)
1121 di
->data
[i
] = traverse
->data
;
1122 dwarf2_swallow_attribute(traverse
, attr
);
1125 else di
->data
= NULL
;
1126 if (abbrev
->have_child
)
1128 vector_init(&di
->children
, sizeof(dwarf2_debug_info_t
*), 16);
1129 while (traverse
->data
< traverse
->end_data
)
1131 if (!dwarf2_read_one_debug_info(ctx
, traverse
, di
, &child
)) return FALSE
;
1133 where
= vector_add(&di
->children
, &ctx
->pool
);
1134 if (!where
) return FALSE
;
1138 if (dwarf2_find_attribute(ctx
, di
, DW_AT_sibling
, &sibling
) &&
1139 traverse
->data
!= ctx
->sections
[ctx
->section
].address
+ sibling
.u
.uvalue
)
1141 WARN("setting cursor for %s to next sibling <0x%lx>\n",
1142 dwarf2_debug_traverse_ctx(traverse
), sibling
.u
.uvalue
);
1143 traverse
->data
= ctx
->sections
[ctx
->section
].address
+ sibling
.u
.uvalue
;
1149 static struct vector
* dwarf2_get_di_children(dwarf2_parse_context_t
* ctx
,
1150 dwarf2_debug_info_t
* di
)
1152 struct attribute spec
;
1156 if (di
->abbrev
->have_child
)
1157 return &di
->children
;
1158 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_specification
, &spec
)) break;
1159 if (!(di
= sparse_array_find(&ctx
->debug_info_table
, spec
.u
.uvalue
)))
1160 FIXME("Should have found the debug info entry\n");
1165 static struct symt
* dwarf2_parse_base_type(dwarf2_parse_context_t
* ctx
,
1166 dwarf2_debug_info_t
* di
)
1168 struct attribute name
;
1169 struct attribute size
;
1170 struct attribute encoding
;
1173 if (di
->symt
) return di
->symt
;
1175 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1177 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
))
1178 name
.u
.string
= NULL
;
1179 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= 0;
1180 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_encoding
, &encoding
)) encoding
.u
.uvalue
= DW_ATE_void
;
1182 switch (encoding
.u
.uvalue
)
1184 case DW_ATE_void
: bt
= btVoid
; break;
1185 case DW_ATE_address
: bt
= btULong
; break;
1186 case DW_ATE_boolean
: bt
= btBool
; break;
1187 case DW_ATE_complex_float
: bt
= btComplex
; break;
1188 case DW_ATE_float
: bt
= btFloat
; break;
1189 case DW_ATE_signed
: bt
= btInt
; break;
1190 case DW_ATE_unsigned
: bt
= btUInt
; break;
1191 case DW_ATE_signed_char
: bt
= btChar
; break;
1192 case DW_ATE_unsigned_char
: bt
= btChar
; break;
1193 default: bt
= btNoType
; break;
1195 di
->symt
= &symt_new_basic(ctx
->module
, bt
, name
.u
.string
, size
.u
.uvalue
)->symt
;
1199 assert(size
.u
.uvalue
== 0);
1200 cache_idx
= sc_void
;
1203 switch (size
.u
.uvalue
)
1205 case 1: cache_idx
= sc_int1
; break;
1206 case 2: cache_idx
= sc_int2
; break;
1207 case 4: cache_idx
= sc_int4
; break;
1212 if (cache_idx
!= -1 && !ctx
->symt_cache
[cache_idx
])
1213 ctx
->symt_cache
[cache_idx
] = di
->symt
;
1215 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1219 static struct symt
* dwarf2_parse_typedef(dwarf2_parse_context_t
* ctx
,
1220 dwarf2_debug_info_t
* di
)
1222 struct symt
* ref_type
;
1223 struct attribute name
;
1225 if (di
->symt
) return di
->symt
;
1227 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx
), di
->abbrev
->entry_code
);
1229 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
)) name
.u
.string
= NULL
;
1230 ref_type
= dwarf2_lookup_type(ctx
, di
);
1233 di
->symt
= &symt_new_typedef(ctx
->module
, ref_type
, name
.u
.string
)->symt
;
1234 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1238 static struct symt
* dwarf2_parse_pointer_type(dwarf2_parse_context_t
* ctx
,
1239 dwarf2_debug_info_t
* di
)
1241 struct symt
* ref_type
;
1242 struct attribute size
;
1244 if (di
->symt
) return di
->symt
;
1246 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1248 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= sizeof(void *);
1249 if (!(ref_type
= dwarf2_lookup_type(ctx
, di
)))
1251 ref_type
= ctx
->symt_cache
[sc_void
];
1254 di
->symt
= &symt_new_pointer(ctx
->module
, ref_type
, size
.u
.uvalue
)->symt
;
1255 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1259 static struct symt
* dwarf2_parse_array_type(dwarf2_parse_context_t
* ctx
,
1260 dwarf2_debug_info_t
* di
)
1262 struct symt
* ref_type
;
1263 struct symt
* idx_type
= NULL
;
1264 struct attribute min
, max
, cnt
;
1265 dwarf2_debug_info_t
* child
;
1267 const struct vector
* children
;
1269 if (di
->symt
) return di
->symt
;
1271 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1273 ref_type
= dwarf2_lookup_type(ctx
, di
);
1275 if (!(children
= dwarf2_get_di_children(ctx
, di
)))
1277 /* fake an array with unknown size */
1278 /* FIXME: int4 even on 64bit machines??? */
1279 idx_type
= ctx
->symt_cache
[sc_int4
];
1283 else for (i
= 0; i
< vector_length(children
); i
++)
1285 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1286 switch (child
->abbrev
->tag
)
1288 case DW_TAG_subrange_type
:
1289 idx_type
= dwarf2_lookup_type(ctx
, child
);
1290 if (!dwarf2_find_attribute(ctx
, child
, DW_AT_lower_bound
, &min
))
1292 if (!dwarf2_find_attribute(ctx
, child
, DW_AT_upper_bound
, &max
))
1294 if (dwarf2_find_attribute(ctx
, child
, DW_AT_count
, &cnt
))
1295 max
.u
.uvalue
= min
.u
.uvalue
+ cnt
.u
.uvalue
;
1298 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1299 child
->abbrev
->tag
, dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1303 di
->symt
= &symt_new_array(ctx
->module
, min
.u
.uvalue
, max
.u
.uvalue
, ref_type
, idx_type
)->symt
;
1307 static struct symt
* dwarf2_parse_const_type(dwarf2_parse_context_t
* ctx
,
1308 dwarf2_debug_info_t
* di
)
1310 struct symt
* ref_type
;
1312 if (di
->symt
) return di
->symt
;
1314 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1316 if (!(ref_type
= dwarf2_lookup_type(ctx
, di
)))
1318 ref_type
= ctx
->symt_cache
[sc_void
];
1321 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1322 di
->symt
= ref_type
;
1327 static struct symt
* dwarf2_parse_volatile_type(dwarf2_parse_context_t
* ctx
,
1328 dwarf2_debug_info_t
* di
)
1330 struct symt
* ref_type
;
1332 if (di
->symt
) return di
->symt
;
1334 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1336 if (!(ref_type
= dwarf2_lookup_type(ctx
, di
)))
1338 ref_type
= ctx
->symt_cache
[sc_void
];
1341 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1342 di
->symt
= ref_type
;
1347 static struct symt
* dwarf2_parse_unspecified_type(dwarf2_parse_context_t
* ctx
,
1348 dwarf2_debug_info_t
* di
)
1350 struct attribute name
;
1351 struct attribute size
;
1352 struct symt_basic
*basic
;
1354 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1356 if (di
->symt
) return di
->symt
;
1358 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
))
1359 name
.u
.string
= "void";
1360 size
.u
.uvalue
= sizeof(void *);
1362 basic
= symt_new_basic(ctx
->module
, btVoid
, name
.u
.string
, size
.u
.uvalue
);
1363 di
->symt
= &basic
->symt
;
1365 if (!ctx
->symt_cache
[sc_void
])
1366 ctx
->symt_cache
[sc_void
] = di
->symt
;
1368 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1372 static struct symt
* dwarf2_parse_reference_type(dwarf2_parse_context_t
* ctx
,
1373 dwarf2_debug_info_t
* di
)
1375 struct symt
* ref_type
= NULL
;
1377 if (di
->symt
) return di
->symt
;
1379 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1381 ref_type
= dwarf2_lookup_type(ctx
, di
);
1382 /* FIXME: for now, we hard-wire C++ references to pointers */
1383 di
->symt
= &symt_new_pointer(ctx
->module
, ref_type
, sizeof(void *))->symt
;
1385 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1390 static void dwarf2_parse_udt_member(dwarf2_parse_context_t
* ctx
,
1391 dwarf2_debug_info_t
* di
,
1392 struct symt_udt
* parent
)
1394 struct symt
* elt_type
;
1395 struct attribute name
;
1396 struct attribute bit_size
;
1397 struct attribute bit_offset
;
1398 struct location loc
;
1402 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1404 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
)) name
.u
.string
= NULL
;
1405 elt_type
= dwarf2_lookup_type(ctx
, di
);
1406 if (dwarf2_compute_location_attr(ctx
, di
, DW_AT_data_member_location
, &loc
, NULL
))
1408 if (loc
.kind
!= loc_absolute
)
1410 FIXME("Found register, while not expecting it\n");
1414 TRACE("found member_location at %s -> %lu\n",
1415 dwarf2_debug_ctx(ctx
), loc
.offset
);
1419 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_bit_size
, &bit_size
))
1420 bit_size
.u
.uvalue
= 0;
1421 if (dwarf2_find_attribute(ctx
, di
, DW_AT_bit_offset
, &bit_offset
))
1423 /* FIXME: we should only do this when implementation is LSB (which is
1424 * the case on i386 processors)
1426 struct attribute nbytes
;
1427 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_byte_size
, &nbytes
))
1430 nbytes
.u
.uvalue
= symt_get_info(ctx
->module
, elt_type
, TI_GET_LENGTH
, &size
) ?
1431 (unsigned long)size
: 0;
1433 bit_offset
.u
.uvalue
= nbytes
.u
.uvalue
* 8 - bit_offset
.u
.uvalue
- bit_size
.u
.uvalue
;
1435 else bit_offset
.u
.uvalue
= 0;
1436 symt_add_udt_element(ctx
->module
, parent
, name
.u
.string
, elt_type
,
1437 (loc
.offset
<< 3) + bit_offset
.u
.uvalue
,
1440 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1443 static struct symt
* dwarf2_parse_subprogram(dwarf2_parse_context_t
* ctx
,
1444 dwarf2_debug_info_t
* di
);
1446 static struct symt
* dwarf2_parse_udt_type(dwarf2_parse_context_t
* ctx
,
1447 dwarf2_debug_info_t
* di
,
1450 struct attribute name
;
1451 struct attribute size
;
1452 struct vector
* children
;
1453 dwarf2_debug_info_t
*child
;
1456 if (di
->symt
) return di
->symt
;
1458 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1460 /* quirk... FIXME provide real support for anonymous UDTs */
1461 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
))
1462 name
.u
.string
= "zz_anon_zz";
1463 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= 0;
1465 di
->symt
= &symt_new_udt(ctx
->module
, dwarf2_get_cpp_name(ctx
, di
, name
.u
.string
),
1466 size
.u
.uvalue
, udt
)->symt
;
1468 children
= dwarf2_get_di_children(ctx
, di
);
1469 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1471 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1473 switch (child
->abbrev
->tag
)
1475 case DW_TAG_array_type
:
1476 dwarf2_parse_array_type(ctx
, di
);
1479 /* FIXME: should I follow the sibling stuff ?? */
1480 dwarf2_parse_udt_member(ctx
, child
, (struct symt_udt
*)di
->symt
);
1482 case DW_TAG_enumeration_type
:
1483 dwarf2_parse_enumeration_type(ctx
, child
);
1485 case DW_TAG_subprogram
:
1486 dwarf2_parse_subprogram(ctx
, child
);
1488 case DW_TAG_const_type
:
1489 dwarf2_parse_const_type(ctx
, child
);
1491 case DW_TAG_structure_type
:
1492 case DW_TAG_class_type
:
1493 case DW_TAG_union_type
:
1494 case DW_TAG_typedef
:
1495 /* FIXME: we need to handle nested udt definitions */
1496 case DW_TAG_inheritance
:
1497 case DW_TAG_template_type_param
:
1498 case DW_TAG_template_value_param
:
1499 case DW_TAG_variable
:
1500 case DW_TAG_imported_declaration
:
1501 case DW_TAG_ptr_to_member_type
:
1502 case DW_TAG_GNU_template_parameter_pack
:
1503 case DW_TAG_GNU_formal_parameter_pack
:
1504 /* FIXME: some C++ related stuff */
1507 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1508 child
->abbrev
->tag
, dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1516 static void dwarf2_parse_enumerator(dwarf2_parse_context_t
* ctx
,
1517 dwarf2_debug_info_t
* di
,
1518 struct symt_enum
* parent
)
1520 struct attribute name
;
1521 struct attribute value
;
1523 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1525 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
)) return;
1526 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_const_value
, &value
)) value
.u
.svalue
= 0;
1527 symt_add_enum_element(ctx
->module
, parent
, name
.u
.string
, value
.u
.svalue
);
1529 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1532 static struct symt
* dwarf2_parse_enumeration_type(dwarf2_parse_context_t
* ctx
,
1533 dwarf2_debug_info_t
* di
)
1535 struct attribute name
;
1536 struct attribute size
;
1537 struct symt_basic
* basetype
;
1538 struct vector
* children
;
1539 dwarf2_debug_info_t
*child
;
1542 if (di
->symt
) return di
->symt
;
1544 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1546 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
)) name
.u
.string
= NULL
;
1547 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= 4;
1549 switch (size
.u
.uvalue
) /* FIXME: that's wrong */
1551 case 1: basetype
= symt_new_basic(ctx
->module
, btInt
, "char", 1); break;
1552 case 2: basetype
= symt_new_basic(ctx
->module
, btInt
, "short", 2); break;
1554 case 4: basetype
= symt_new_basic(ctx
->module
, btInt
, "int", 4); break;
1557 di
->symt
= &symt_new_enum(ctx
->module
, name
.u
.string
, &basetype
->symt
)->symt
;
1559 children
= dwarf2_get_di_children(ctx
, di
);
1560 /* FIXME: should we use the sibling stuff ?? */
1561 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1563 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1565 switch (child
->abbrev
->tag
)
1567 case DW_TAG_enumerator
:
1568 dwarf2_parse_enumerator(ctx
, child
, (struct symt_enum
*)di
->symt
);
1571 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1572 di
->abbrev
->tag
, dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1578 /* structure used to pass information around when parsing a subprogram */
1579 typedef struct dwarf2_subprogram_s
1581 dwarf2_parse_context_t
* ctx
;
1582 struct symt_function
* func
;
1583 BOOL non_computed_variable
;
1584 struct location frame
;
1585 } dwarf2_subprogram_t
;
1587 /******************************************************************
1588 * dwarf2_parse_variable
1590 * Parses any variable (parameter, local/global variable)
1592 static void dwarf2_parse_variable(dwarf2_subprogram_t
* subpgm
,
1593 struct symt_block
* block
,
1594 dwarf2_debug_info_t
* di
)
1596 struct symt
* param_type
;
1597 struct attribute name
, value
;
1598 struct location loc
;
1601 TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm
->ctx
), dwarf2_debug_di(di
));
1603 is_pmt
= !block
&& di
->abbrev
->tag
== DW_TAG_formal_parameter
;
1604 param_type
= dwarf2_lookup_type(subpgm
->ctx
, di
);
1606 if (!dwarf2_find_attribute(subpgm
->ctx
, di
, DW_AT_name
, &name
)) {
1607 /* cannot do much without the name, the functions below won't like it. */
1610 if (dwarf2_compute_location_attr(subpgm
->ctx
, di
, DW_AT_location
,
1611 &loc
, &subpgm
->frame
))
1613 struct attribute ext
;
1615 TRACE("found parameter %s (kind=%d, offset=%ld, reg=%d) at %s\n",
1616 debugstr_a(name
.u
.string
), loc
.kind
, loc
.offset
, loc
.reg
,
1617 dwarf2_debug_ctx(subpgm
->ctx
));
1624 /* it's a global variable */
1625 /* FIXME: we don't handle its scope yet */
1626 if (!dwarf2_find_attribute(subpgm
->ctx
, di
, DW_AT_external
, &ext
))
1628 loc
.offset
+= subpgm
->ctx
->load_offset
;
1629 symt_new_global_variable(subpgm
->ctx
->module
, subpgm
->ctx
->compiland
,
1630 dwarf2_get_cpp_name(subpgm
->ctx
, di
, name
.u
.string
), !ext
.u
.uvalue
,
1631 loc
, 0, param_type
);
1634 subpgm
->non_computed_variable
= TRUE
;
1638 /* either a pmt/variable relative to frame pointer or
1639 * pmt/variable in a register
1641 assert(subpgm
->func
);
1642 symt_add_func_local(subpgm
->ctx
->module
, subpgm
->func
,
1643 is_pmt
? DataIsParam
: DataIsLocal
,
1644 &loc
, block
, param_type
, name
.u
.string
);
1648 else if (dwarf2_find_attribute(subpgm
->ctx
, di
, DW_AT_const_value
, &value
))
1651 if (subpgm
->func
) WARN("Unsupported constant %s in function\n", debugstr_a(name
.u
.string
));
1652 if (is_pmt
) FIXME("Unsupported constant (parameter) %s in function\n", debugstr_a(name
.u
.string
));
1660 v
.n1
.n2
.vt
= VT_UI4
;
1661 v
.n1
.n2
.n3
.lVal
= value
.u
.uvalue
;
1665 v
.n1
.n2
.vt
= VT_UI8
;
1666 v
.n1
.n2
.n3
.llVal
= value
.u
.lluvalue
;
1671 v
.n1
.n2
.n3
.lVal
= value
.u
.svalue
;
1675 case DW_FORM_string
:
1676 /* FIXME: native doesn't report const strings from here !!
1677 * however, the value of the string is in the code somewhere
1679 v
.n1
.n2
.vt
= VT_I1
| VT_BYREF
;
1680 v
.n1
.n2
.n3
.byref
= pool_strdup(&subpgm
->ctx
->module
->pool
, value
.u
.string
);
1684 case DW_FORM_block1
:
1685 case DW_FORM_block2
:
1686 case DW_FORM_block4
:
1688 switch (value
.u
.block
.size
)
1690 case 1: v
.n1
.n2
.n3
.lVal
= *(BYTE
*)value
.u
.block
.ptr
; break;
1691 case 2: v
.n1
.n2
.n3
.lVal
= *(USHORT
*)value
.u
.block
.ptr
; break;
1692 case 4: v
.n1
.n2
.n3
.lVal
= *(DWORD
*)value
.u
.block
.ptr
; break;
1694 v
.n1
.n2
.vt
= VT_I1
| VT_BYREF
;
1695 v
.n1
.n2
.n3
.byref
= pool_alloc(&subpgm
->ctx
->module
->pool
, value
.u
.block
.size
);
1696 memcpy(v
.n1
.n2
.n3
.byref
, value
.u
.block
.ptr
, value
.u
.block
.size
);
1701 FIXME("Unsupported form for const value %s (%lx)\n",
1702 debugstr_a(name
.u
.string
), value
.form
);
1703 v
.n1
.n2
.vt
= VT_EMPTY
;
1705 di
->symt
= &symt_new_constant(subpgm
->ctx
->module
, subpgm
->ctx
->compiland
,
1706 name
.u
.string
, param_type
, &v
)->symt
;
1710 /* variable has been optimized away... report anyway */
1711 loc
.kind
= loc_error
;
1712 loc
.reg
= loc_err_no_location
;
1715 symt_add_func_local(subpgm
->ctx
->module
, subpgm
->func
,
1716 is_pmt
? DataIsParam
: DataIsLocal
,
1717 &loc
, block
, param_type
, name
.u
.string
);
1721 WARN("dropping global variable %s which has been optimized away\n", debugstr_a(name
.u
.string
));
1724 if (is_pmt
&& subpgm
->func
&& subpgm
->func
->type
)
1725 symt_add_function_signature_parameter(subpgm
->ctx
->module
,
1726 (struct symt_function_signature
*)subpgm
->func
->type
,
1729 if (dwarf2_get_di_children(subpgm
->ctx
, di
)) FIXME("Unsupported children\n");
1732 static void dwarf2_parse_subprogram_label(dwarf2_subprogram_t
* subpgm
,
1733 const dwarf2_debug_info_t
* di
)
1735 struct attribute name
;
1736 struct attribute low_pc
;
1737 struct location loc
;
1739 TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm
->ctx
), dwarf2_debug_di(di
));
1741 if (!dwarf2_find_attribute(subpgm
->ctx
, di
, DW_AT_low_pc
, &low_pc
)) low_pc
.u
.uvalue
= 0;
1742 if (!dwarf2_find_attribute(subpgm
->ctx
, di
, DW_AT_name
, &name
))
1743 name
.u
.string
= NULL
;
1745 loc
.kind
= loc_absolute
;
1746 loc
.offset
= subpgm
->ctx
->load_offset
+ low_pc
.u
.uvalue
;
1747 symt_add_function_point(subpgm
->ctx
->module
, subpgm
->func
, SymTagLabel
,
1748 &loc
, name
.u
.string
);
1751 static void dwarf2_parse_subprogram_block(dwarf2_subprogram_t
* subpgm
,
1752 struct symt_block
* parent_block
,
1753 dwarf2_debug_info_t
* di
);
1755 static struct symt
* dwarf2_parse_subroutine_type(dwarf2_parse_context_t
* ctx
,
1756 dwarf2_debug_info_t
* di
);
1758 static void dwarf2_parse_inlined_subroutine(dwarf2_subprogram_t
* subpgm
,
1759 struct symt_block
* parent_block
,
1760 dwarf2_debug_info_t
* di
)
1762 struct symt_block
* block
;
1763 unsigned long low_pc
, high_pc
;
1764 struct vector
* children
;
1765 dwarf2_debug_info_t
*child
;
1768 TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm
->ctx
), dwarf2_debug_di(di
));
1770 if (!dwarf2_read_range(subpgm
->ctx
, di
, &low_pc
, &high_pc
))
1772 FIXME("cannot read range\n");
1776 block
= symt_open_func_block(subpgm
->ctx
->module
, subpgm
->func
, parent_block
,
1777 subpgm
->ctx
->load_offset
+ low_pc
- subpgm
->func
->address
,
1780 children
= dwarf2_get_di_children(subpgm
->ctx
, di
);
1781 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1783 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1785 switch (child
->abbrev
->tag
)
1787 case DW_TAG_formal_parameter
:
1788 case DW_TAG_variable
:
1789 dwarf2_parse_variable(subpgm
, block
, child
);
1791 case DW_TAG_lexical_block
:
1792 dwarf2_parse_subprogram_block(subpgm
, block
, child
);
1794 case DW_TAG_inlined_subroutine
:
1795 dwarf2_parse_inlined_subroutine(subpgm
, block
, child
);
1798 dwarf2_parse_subprogram_label(subpgm
, child
);
1800 case DW_TAG_GNU_call_site
:
1801 /* this isn't properly supported by dbghelp interface. skip it for now */
1804 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1805 child
->abbrev
->tag
, dwarf2_debug_ctx(subpgm
->ctx
),
1806 dwarf2_debug_di(di
));
1809 symt_close_func_block(subpgm
->ctx
->module
, subpgm
->func
, block
, 0);
1812 static void dwarf2_parse_subprogram_block(dwarf2_subprogram_t
* subpgm
,
1813 struct symt_block
* parent_block
,
1814 dwarf2_debug_info_t
* di
)
1816 struct symt_block
* block
;
1817 unsigned long low_pc
, high_pc
;
1818 struct vector
* children
;
1819 dwarf2_debug_info_t
*child
;
1822 TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm
->ctx
), dwarf2_debug_di(di
));
1824 if (!dwarf2_read_range(subpgm
->ctx
, di
, &low_pc
, &high_pc
))
1830 block
= symt_open_func_block(subpgm
->ctx
->module
, subpgm
->func
, parent_block
,
1831 subpgm
->ctx
->load_offset
+ low_pc
- subpgm
->func
->address
,
1834 children
= dwarf2_get_di_children(subpgm
->ctx
, di
);
1835 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1837 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1839 switch (child
->abbrev
->tag
)
1841 case DW_TAG_inlined_subroutine
:
1842 dwarf2_parse_inlined_subroutine(subpgm
, block
, child
);
1844 case DW_TAG_variable
:
1845 dwarf2_parse_variable(subpgm
, block
, child
);
1847 case DW_TAG_pointer_type
:
1848 dwarf2_parse_pointer_type(subpgm
->ctx
, di
);
1850 case DW_TAG_subroutine_type
:
1851 dwarf2_parse_subroutine_type(subpgm
->ctx
, di
);
1853 case DW_TAG_const_type
:
1854 dwarf2_parse_const_type(subpgm
->ctx
, di
);
1856 case DW_TAG_lexical_block
:
1857 dwarf2_parse_subprogram_block(subpgm
, block
, child
);
1859 case DW_TAG_subprogram
:
1860 /* FIXME: likely a declaration (to be checked)
1864 case DW_TAG_formal_parameter
:
1865 /* FIXME: likely elements for exception handling (GCC flavor)
1869 case DW_TAG_imported_module
:
1870 /* C++ stuff to be silenced (for now) */
1872 case DW_TAG_GNU_call_site
:
1873 /* this isn't properly supported by dbghelp interface. skip it for now */
1876 dwarf2_parse_subprogram_label(subpgm
, child
);
1878 case DW_TAG_class_type
:
1879 case DW_TAG_structure_type
:
1880 case DW_TAG_union_type
:
1881 case DW_TAG_enumeration_type
:
1882 case DW_TAG_typedef
:
1883 /* the type referred to will be loaded when we need it, so skip it */
1886 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1887 child
->abbrev
->tag
, dwarf2_debug_ctx(subpgm
->ctx
), dwarf2_debug_di(di
));
1891 symt_close_func_block(subpgm
->ctx
->module
, subpgm
->func
, block
, 0);
1894 static struct symt
* dwarf2_parse_subprogram(dwarf2_parse_context_t
* ctx
,
1895 dwarf2_debug_info_t
* di
)
1897 struct attribute name
;
1898 unsigned long low_pc
, high_pc
;
1899 struct attribute is_decl
;
1900 struct attribute inline_flags
;
1901 struct symt
* ret_type
;
1902 struct symt_function_signature
* sig_type
;
1903 dwarf2_subprogram_t subpgm
;
1904 struct vector
* children
;
1905 dwarf2_debug_info_t
* child
;
1908 if (di
->symt
) return di
->symt
;
1910 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1912 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
))
1914 WARN("No name for function... dropping function\n");
1917 /* if it's an abstract representation of an inline function, there should be
1918 * a concrete object that we'll handle
1920 if (dwarf2_find_attribute(ctx
, di
, DW_AT_inline
, &inline_flags
) &&
1921 inline_flags
.u
.uvalue
!= DW_INL_not_inlined
)
1923 TRACE("Function %s declared as inlined (%ld)... skipping\n",
1924 debugstr_a(name
.u
.string
), inline_flags
.u
.uvalue
);
1928 if (dwarf2_find_attribute(ctx
, di
, DW_AT_declaration
, &is_decl
) &&
1929 is_decl
.u
.uvalue
&& is_decl
.gotten_from
== attr_direct
)
1931 /* it's a real declaration, skip it */
1934 if (!dwarf2_read_range(ctx
, di
, &low_pc
, &high_pc
))
1936 WARN("cannot get range for %s\n", debugstr_a(name
.u
.string
));
1939 /* As functions (defined as inline assembly) get debug info with dwarf
1940 * (not the case for stabs), we just drop Wine's thunks here...
1941 * Actual thunks will be created in elf_module from the symbol table
1943 if (elf_is_in_thunk_area(ctx
->load_offset
+ low_pc
, ctx
->thunks
) >= 0)
1945 if (!(ret_type
= dwarf2_lookup_type(ctx
, di
)))
1947 ret_type
= ctx
->symt_cache
[sc_void
];
1950 /* FIXME: assuming C source code */
1951 sig_type
= symt_new_function_signature(ctx
->module
, ret_type
, CV_CALL_FAR_C
);
1952 subpgm
.func
= symt_new_function(ctx
->module
, ctx
->compiland
,
1953 dwarf2_get_cpp_name(ctx
, di
, name
.u
.string
),
1954 ctx
->load_offset
+ low_pc
, high_pc
- low_pc
,
1956 di
->symt
= &subpgm
.func
->symt
;
1958 if (!dwarf2_compute_location_attr(ctx
, di
, DW_AT_frame_base
,
1959 &subpgm
.frame
, NULL
))
1962 subpgm
.frame
.kind
= loc_regrel
;
1963 subpgm
.frame
.reg
= dbghelp_current_cpu
->frame_regno
;
1964 subpgm
.frame
.offset
= 0;
1966 subpgm
.non_computed_variable
= FALSE
;
1968 children
= dwarf2_get_di_children(ctx
, di
);
1969 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1971 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1973 switch (child
->abbrev
->tag
)
1975 case DW_TAG_variable
:
1976 case DW_TAG_formal_parameter
:
1977 dwarf2_parse_variable(&subpgm
, NULL
, child
);
1979 case DW_TAG_lexical_block
:
1980 dwarf2_parse_subprogram_block(&subpgm
, NULL
, child
);
1982 case DW_TAG_inlined_subroutine
:
1983 dwarf2_parse_inlined_subroutine(&subpgm
, NULL
, child
);
1985 case DW_TAG_pointer_type
:
1986 dwarf2_parse_pointer_type(subpgm
.ctx
, di
);
1988 case DW_TAG_const_type
:
1989 dwarf2_parse_const_type(subpgm
.ctx
, di
);
1991 case DW_TAG_subprogram
:
1992 /* FIXME: likely a declaration (to be checked)
1997 dwarf2_parse_subprogram_label(&subpgm
, child
);
1999 case DW_TAG_class_type
:
2000 case DW_TAG_structure_type
:
2001 case DW_TAG_union_type
:
2002 case DW_TAG_enumeration_type
:
2003 case DW_TAG_typedef
:
2004 /* the type referred to will be loaded when we need it, so skip it */
2006 case DW_TAG_unspecified_parameters
:
2007 case DW_TAG_template_type_param
:
2008 case DW_TAG_template_value_param
:
2009 case DW_TAG_GNU_call_site
:
2010 case DW_TAG_GNU_template_parameter_pack
:
2011 case DW_TAG_GNU_formal_parameter_pack
:
2012 /* FIXME: no support in dbghelp's internals so far */
2015 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
2016 child
->abbrev
->tag
, dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
2020 if (subpgm
.non_computed_variable
|| subpgm
.frame
.kind
>= loc_user
)
2022 symt_add_function_point(ctx
->module
, subpgm
.func
, SymTagCustom
,
2023 &subpgm
.frame
, NULL
);
2025 if (subpgm
.func
) symt_normalize_function(subpgm
.ctx
->module
, subpgm
.func
);
2030 static struct symt
* dwarf2_parse_subroutine_type(dwarf2_parse_context_t
* ctx
,
2031 dwarf2_debug_info_t
* di
)
2033 struct symt
* ret_type
;
2034 struct symt_function_signature
* sig_type
;
2035 struct vector
* children
;
2036 dwarf2_debug_info_t
* child
;
2039 if (di
->symt
) return di
->symt
;
2041 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
2043 if (!(ret_type
= dwarf2_lookup_type(ctx
, di
)))
2045 ret_type
= ctx
->symt_cache
[sc_void
];
2049 /* FIXME: assuming C source code */
2050 sig_type
= symt_new_function_signature(ctx
->module
, ret_type
, CV_CALL_FAR_C
);
2052 children
= dwarf2_get_di_children(ctx
, di
);
2053 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2055 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2057 switch (child
->abbrev
->tag
)
2059 case DW_TAG_formal_parameter
:
2060 symt_add_function_signature_parameter(ctx
->module
, sig_type
,
2061 dwarf2_lookup_type(ctx
, child
));
2063 case DW_TAG_unspecified_parameters
:
2064 WARN("Unsupported unspecified parameters\n");
2069 return di
->symt
= &sig_type
->symt
;
2072 static void dwarf2_parse_namespace(dwarf2_parse_context_t
* ctx
,
2073 dwarf2_debug_info_t
* di
)
2075 struct vector
* children
;
2076 dwarf2_debug_info_t
* child
;
2079 if (di
->symt
) return;
2081 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
2083 di
->symt
= ctx
->symt_cache
[sc_void
];
2085 children
= dwarf2_get_di_children(ctx
, di
);
2086 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2088 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2089 dwarf2_load_one_entry(ctx
, child
);
2093 static void dwarf2_load_one_entry(dwarf2_parse_context_t
* ctx
,
2094 dwarf2_debug_info_t
* di
)
2096 switch (di
->abbrev
->tag
)
2098 case DW_TAG_typedef
:
2099 dwarf2_parse_typedef(ctx
, di
);
2101 case DW_TAG_base_type
:
2102 dwarf2_parse_base_type(ctx
, di
);
2104 case DW_TAG_pointer_type
:
2105 dwarf2_parse_pointer_type(ctx
, di
);
2107 case DW_TAG_class_type
:
2108 dwarf2_parse_udt_type(ctx
, di
, UdtClass
);
2110 case DW_TAG_structure_type
:
2111 dwarf2_parse_udt_type(ctx
, di
, UdtStruct
);
2113 case DW_TAG_union_type
:
2114 dwarf2_parse_udt_type(ctx
, di
, UdtUnion
);
2116 case DW_TAG_array_type
:
2117 dwarf2_parse_array_type(ctx
, di
);
2119 case DW_TAG_const_type
:
2120 dwarf2_parse_const_type(ctx
, di
);
2122 case DW_TAG_volatile_type
:
2123 dwarf2_parse_volatile_type(ctx
, di
);
2125 case DW_TAG_unspecified_type
:
2126 dwarf2_parse_unspecified_type(ctx
, di
);
2128 case DW_TAG_reference_type
:
2129 dwarf2_parse_reference_type(ctx
, di
);
2131 case DW_TAG_enumeration_type
:
2132 dwarf2_parse_enumeration_type(ctx
, di
);
2134 case DW_TAG_subprogram
:
2135 dwarf2_parse_subprogram(ctx
, di
);
2137 case DW_TAG_subroutine_type
:
2138 dwarf2_parse_subroutine_type(ctx
, di
);
2140 case DW_TAG_variable
:
2142 dwarf2_subprogram_t subpgm
;
2146 subpgm
.frame
.kind
= loc_absolute
;
2147 subpgm
.frame
.offset
= 0;
2148 subpgm
.frame
.reg
= Wine_DW_no_register
;
2149 dwarf2_parse_variable(&subpgm
, NULL
, di
);
2152 case DW_TAG_namespace
:
2153 dwarf2_parse_namespace(ctx
, di
);
2155 /* silence a couple of C++ defines */
2156 case DW_TAG_imported_module
:
2157 case DW_TAG_imported_declaration
:
2158 case DW_TAG_ptr_to_member_type
:
2161 FIXME("Unhandled Tag type 0x%lx at %s, for %lu\n",
2162 di
->abbrev
->tag
, dwarf2_debug_ctx(ctx
), di
->abbrev
->entry_code
);
2166 static void dwarf2_set_line_number(struct module
* module
, unsigned long address
,
2167 const struct vector
* v
, unsigned file
, unsigned line
)
2169 struct symt_function
* func
;
2170 struct symt_ht
* symt
;
2173 if (!file
|| !(psrc
= vector_at(v
, file
- 1))) return;
2175 TRACE("%s %lx %s %u\n",
2176 debugstr_w(module
->module
.ModuleName
), address
, debugstr_a(source_get(module
, *psrc
)), line
);
2177 if (!(symt
= symt_find_nearest(module
, address
)) ||
2178 symt
->symt
.tag
!= SymTagFunction
) return;
2179 func
= (struct symt_function
*)symt
;
2180 symt_add_func_line(module
, func
, *psrc
, line
, address
- func
->address
);
2183 static BOOL
dwarf2_parse_line_numbers(const dwarf2_section_t
* sections
,
2184 dwarf2_parse_context_t
* ctx
,
2185 const char* compile_dir
,
2186 unsigned long offset
)
2188 dwarf2_traverse_context_t traverse
;
2189 unsigned long length
;
2190 unsigned insn_size
, default_stmt
;
2191 unsigned line_range
, opcode_base
;
2193 const unsigned char* opcode_len
;
2195 struct vector files
;
2198 /* section with line numbers stripped */
2199 if (sections
[section_line
].address
== IMAGE_NO_MAP
)
2202 if (offset
+ 4 > sections
[section_line
].size
)
2204 WARN("out of bounds offset\n");
2207 traverse
.data
= sections
[section_line
].address
+ offset
;
2208 traverse
.end_data
= traverse
.data
+ 4;
2209 traverse
.word_size
= ctx
->module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
;
2211 length
= dwarf2_parse_u4(&traverse
);
2212 traverse
.end_data
= sections
[section_line
].address
+ offset
+ length
;
2214 if (offset
+ 4 + length
> sections
[section_line
].size
)
2216 WARN("out of bounds header\n");
2219 dwarf2_parse_u2(&traverse
); /* version */
2220 dwarf2_parse_u4(&traverse
); /* header_len */
2221 insn_size
= dwarf2_parse_byte(&traverse
);
2222 default_stmt
= dwarf2_parse_byte(&traverse
);
2223 line_base
= (signed char)dwarf2_parse_byte(&traverse
);
2224 line_range
= dwarf2_parse_byte(&traverse
);
2225 opcode_base
= dwarf2_parse_byte(&traverse
);
2227 opcode_len
= traverse
.data
;
2228 traverse
.data
+= opcode_base
- 1;
2230 vector_init(&dirs
, sizeof(const char*), 4);
2231 p
= vector_add(&dirs
, &ctx
->pool
);
2232 *p
= compile_dir
? compile_dir
: ".";
2233 while (*traverse
.data
)
2235 const char* rel
= (const char*)traverse
.data
;
2236 unsigned rellen
= strlen(rel
);
2237 TRACE("Got include %s\n", debugstr_a(rel
));
2238 traverse
.data
+= rellen
+ 1;
2239 p
= vector_add(&dirs
, &ctx
->pool
);
2241 if (*rel
== '/' || !compile_dir
)
2245 /* include directory relative to compile directory */
2246 unsigned baselen
= strlen(compile_dir
);
2247 char* tmp
= pool_alloc(&ctx
->pool
, baselen
+ 1 + rellen
+ 1);
2248 strcpy(tmp
, compile_dir
);
2249 if (tmp
[baselen
- 1] != '/') tmp
[baselen
++] = '/';
2250 strcpy(&tmp
[baselen
], rel
);
2257 vector_init(&files
, sizeof(unsigned), 16);
2258 while (*traverse
.data
)
2260 unsigned int dir_index
, mod_time
;
2265 name
= (const char*)traverse
.data
;
2266 traverse
.data
+= strlen(name
) + 1;
2267 dir_index
= dwarf2_leb128_as_unsigned(&traverse
);
2268 mod_time
= dwarf2_leb128_as_unsigned(&traverse
);
2269 length
= dwarf2_leb128_as_unsigned(&traverse
);
2270 dir
= *(const char**)vector_at(&dirs
, dir_index
);
2271 TRACE("Got file %s/%s (%u,%lu)\n", debugstr_a(dir
), debugstr_a(name
), mod_time
, length
);
2272 psrc
= vector_add(&files
, &ctx
->pool
);
2273 *psrc
= source_new(ctx
->module
, dir
, name
);
2277 while (traverse
.data
< traverse
.end_data
)
2279 unsigned long address
= 0;
2282 unsigned is_stmt
= default_stmt
;
2283 BOOL end_sequence
= FALSE
;
2284 unsigned opcode
, extopcode
, i
;
2286 while (!end_sequence
)
2288 opcode
= dwarf2_parse_byte(&traverse
);
2289 TRACE("Got opcode %x\n", opcode
);
2291 if (opcode
>= opcode_base
)
2293 unsigned delta
= opcode
- opcode_base
;
2295 address
+= (delta
/ line_range
) * insn_size
;
2296 line
+= line_base
+ (delta
% line_range
);
2297 dwarf2_set_line_number(ctx
->module
, address
, &files
, file
, line
);
2304 dwarf2_set_line_number(ctx
->module
, address
, &files
, file
, line
);
2306 case DW_LNS_advance_pc
:
2307 address
+= insn_size
* dwarf2_leb128_as_unsigned(&traverse
);
2309 case DW_LNS_advance_line
:
2310 line
+= dwarf2_leb128_as_signed(&traverse
);
2312 case DW_LNS_set_file
:
2313 file
= dwarf2_leb128_as_unsigned(&traverse
);
2315 case DW_LNS_set_column
:
2316 dwarf2_leb128_as_unsigned(&traverse
);
2318 case DW_LNS_negate_stmt
:
2321 case DW_LNS_set_basic_block
:
2323 case DW_LNS_const_add_pc
:
2324 address
+= ((255 - opcode_base
) / line_range
) * insn_size
;
2326 case DW_LNS_fixed_advance_pc
:
2327 address
+= dwarf2_parse_u2(&traverse
);
2329 case DW_LNS_extended_op
:
2330 dwarf2_leb128_as_unsigned(&traverse
);
2331 extopcode
= dwarf2_parse_byte(&traverse
);
2334 case DW_LNE_end_sequence
:
2335 dwarf2_set_line_number(ctx
->module
, address
, &files
, file
, line
);
2336 end_sequence
= TRUE
;
2338 case DW_LNE_set_address
:
2339 address
= ctx
->load_offset
+ dwarf2_parse_addr(&traverse
);
2341 case DW_LNE_define_file
:
2342 FIXME("not handled define file %s\n", debugstr_a((char *)traverse
.data
));
2343 traverse
.data
+= strlen((const char *)traverse
.data
) + 1;
2344 dwarf2_leb128_as_unsigned(&traverse
);
2345 dwarf2_leb128_as_unsigned(&traverse
);
2346 dwarf2_leb128_as_unsigned(&traverse
);
2348 case DW_LNE_set_discriminator
:
2352 descr
= dwarf2_leb128_as_unsigned(&traverse
);
2353 WARN("not handled discriminator %x\n", descr
);
2357 FIXME("Unsupported extended opcode %x\n", extopcode
);
2362 WARN("Unsupported opcode %x\n", opcode
);
2363 for (i
= 0; i
< opcode_len
[opcode
]; i
++)
2364 dwarf2_leb128_as_unsigned(&traverse
);
2373 static BOOL
dwarf2_parse_compilation_unit(const dwarf2_section_t
* sections
,
2374 struct module
* module
,
2375 const struct elf_thunk_area
* thunks
,
2376 dwarf2_traverse_context_t
* mod_ctx
,
2377 unsigned long load_offset
)
2379 dwarf2_parse_context_t ctx
;
2380 dwarf2_traverse_context_t abbrev_ctx
;
2381 dwarf2_debug_info_t
* di
;
2382 dwarf2_traverse_context_t cu_ctx
;
2383 const unsigned char* comp_unit_start
= mod_ctx
->data
;
2384 unsigned long cu_length
;
2385 unsigned short cu_version
;
2386 unsigned long cu_abbrev_offset
;
2389 cu_length
= dwarf2_parse_u4(mod_ctx
);
2390 cu_ctx
.data
= mod_ctx
->data
;
2391 cu_ctx
.end_data
= mod_ctx
->data
+ cu_length
;
2392 mod_ctx
->data
+= cu_length
;
2393 cu_version
= dwarf2_parse_u2(&cu_ctx
);
2394 cu_abbrev_offset
= dwarf2_parse_u4(&cu_ctx
);
2395 cu_ctx
.word_size
= dwarf2_parse_byte(&cu_ctx
);
2397 TRACE("Compilation Unit Header found at 0x%x:\n",
2398 (int)(comp_unit_start
- sections
[section_debug
].address
));
2399 TRACE("- length: %lu\n", cu_length
);
2400 TRACE("- version: %u\n", cu_version
);
2401 TRACE("- abbrev_offset: %lu\n", cu_abbrev_offset
);
2402 TRACE("- word_size: %u\n", cu_ctx
.word_size
);
2404 if (cu_version
!= 2)
2406 WARN("%u DWARF version unsupported. Wine dbghelp only support DWARF 2.\n",
2411 module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
= cu_ctx
.word_size
;
2412 mod_ctx
->word_size
= cu_ctx
.word_size
;
2414 pool_init(&ctx
.pool
, 65536);
2415 ctx
.sections
= sections
;
2416 ctx
.section
= section_debug
;
2417 ctx
.module
= module
;
2418 ctx
.thunks
= thunks
;
2419 ctx
.load_offset
= load_offset
;
2420 ctx
.ref_offset
= comp_unit_start
- sections
[section_debug
].address
;
2421 memset(ctx
.symt_cache
, 0, sizeof(ctx
.symt_cache
));
2422 ctx
.symt_cache
[sc_void
] = &symt_new_basic(module
, btVoid
, "void", 0)->symt
;
2423 ctx
.cpp_name
= NULL
;
2425 abbrev_ctx
.data
= sections
[section_abbrev
].address
+ cu_abbrev_offset
;
2426 abbrev_ctx
.end_data
= sections
[section_abbrev
].address
+ sections
[section_abbrev
].size
;
2427 abbrev_ctx
.word_size
= cu_ctx
.word_size
;
2428 dwarf2_parse_abbrev_set(&abbrev_ctx
, &ctx
.abbrev_table
, &ctx
.pool
);
2430 sparse_array_init(&ctx
.debug_info_table
, sizeof(dwarf2_debug_info_t
), 128);
2431 dwarf2_read_one_debug_info(&ctx
, &cu_ctx
, NULL
, &di
);
2433 if (di
->abbrev
->tag
== DW_TAG_compile_unit
)
2435 struct attribute name
;
2436 struct vector
* children
;
2437 dwarf2_debug_info_t
* child
= NULL
;
2439 struct attribute stmt_list
, low_pc
;
2440 struct attribute comp_dir
;
2442 if (!dwarf2_find_attribute(&ctx
, di
, DW_AT_name
, &name
))
2443 name
.u
.string
= NULL
;
2445 /* get working directory of current compilation unit */
2446 if (!dwarf2_find_attribute(&ctx
, di
, DW_AT_comp_dir
, &comp_dir
))
2447 comp_dir
.u
.string
= NULL
;
2449 if (!dwarf2_find_attribute(&ctx
, di
, DW_AT_low_pc
, &low_pc
))
2450 low_pc
.u
.uvalue
= 0;
2451 ctx
.compiland
= symt_new_compiland(module
, ctx
.load_offset
+ low_pc
.u
.uvalue
,
2452 source_new(module
, comp_dir
.u
.string
, name
.u
.string
));
2453 di
->symt
= &ctx
.compiland
->symt
;
2454 children
= dwarf2_get_di_children(&ctx
, di
);
2455 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2457 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2458 dwarf2_load_one_entry(&ctx
, child
);
2460 if (dwarf2_find_attribute(&ctx
, di
, DW_AT_stmt_list
, &stmt_list
))
2462 if (dwarf2_parse_line_numbers(sections
, &ctx
, comp_dir
.u
.string
, stmt_list
.u
.uvalue
))
2463 module
->module
.LineNumbers
= TRUE
;
2467 else FIXME("Should have a compilation unit here\n");
2468 pool_destroy(&ctx
.pool
);
2472 static BOOL
dwarf2_lookup_loclist(const struct module_format
* modfmt
, const BYTE
* start
,
2473 unsigned long ip
, dwarf2_traverse_context_t
* lctx
)
2476 const BYTE
* ptr
= start
;
2479 while (ptr
< modfmt
->u
.dwarf2_info
->debug_loc
.address
+ modfmt
->u
.dwarf2_info
->debug_loc
.size
)
2481 beg
= dwarf2_get_addr(ptr
, modfmt
->u
.dwarf2_info
->word_size
); ptr
+= modfmt
->u
.dwarf2_info
->word_size
;
2482 end
= dwarf2_get_addr(ptr
, modfmt
->u
.dwarf2_info
->word_size
); ptr
+= modfmt
->u
.dwarf2_info
->word_size
;
2483 if (!beg
&& !end
) break;
2484 len
= dwarf2_get_u2(ptr
); ptr
+= 2;
2486 if (beg
<= ip
&& ip
< end
)
2489 lctx
->end_data
= ptr
+ len
;
2490 lctx
->word_size
= modfmt
->u
.dwarf2_info
->word_size
;
2495 WARN("Couldn't find ip in location list\n");
2499 static enum location_error
loc_compute_frame(struct process
* pcs
,
2500 const struct module_format
* modfmt
,
2501 const struct symt_function
* func
,
2502 DWORD_PTR ip
, struct location
* frame
)
2504 struct symt
** psym
= NULL
;
2505 struct location
* pframe
;
2506 dwarf2_traverse_context_t lctx
;
2507 enum location_error err
;
2510 for (i
=0; i
<vector_length(&func
->vchildren
); i
++)
2512 psym
= vector_at(&func
->vchildren
, i
);
2513 if ((*psym
)->tag
== SymTagCustom
)
2515 pframe
= &((struct symt_hierarchy_point
*)*psym
)->loc
;
2517 /* First, recompute the frame information, if needed */
2518 switch (pframe
->kind
)
2524 case loc_dwarf2_location_list
:
2525 WARN("Searching loclist for %s\n", debugstr_a(func
->hash_elt
.name
));
2526 if (!dwarf2_lookup_loclist(modfmt
,
2527 modfmt
->u
.dwarf2_info
->debug_loc
.address
+ pframe
->offset
,
2529 return loc_err_out_of_scope
;
2530 if ((err
= compute_location(&lctx
, frame
, pcs
->handle
, NULL
)) < 0) return err
;
2531 if (frame
->kind
>= loc_user
)
2533 WARN("Couldn't compute runtime frame location\n");
2534 return loc_err_too_complex
;
2538 WARN("Unsupported frame kind %d\n", pframe
->kind
);
2539 return loc_err_internal
;
2544 WARN("Couldn't find Custom function point, whilst location list offset is searched\n");
2545 return loc_err_internal
;
2550 RULE_UNSET
, /* not set at all */
2551 RULE_UNDEFINED
, /* undefined value */
2552 RULE_SAME
, /* same value as previous frame */
2553 RULE_CFA_OFFSET
, /* stored at cfa offset */
2554 RULE_OTHER_REG
, /* stored in other register */
2555 RULE_EXPRESSION
, /* address specified by expression */
2556 RULE_VAL_EXPRESSION
/* value specified by expression */
2559 /* make it large enough for all CPUs */
2560 #define NB_FRAME_REGS 64
2561 #define MAX_SAVED_STATES 16
2565 ULONG_PTR cfa_offset
;
2566 unsigned char cfa_reg
;
2567 enum reg_rule cfa_rule
;
2568 enum reg_rule rules
[NB_FRAME_REGS
];
2569 ULONG_PTR regs
[NB_FRAME_REGS
];
2575 ULONG_PTR code_align
;
2576 LONG_PTR data_align
;
2577 unsigned char retaddr_reg
;
2578 unsigned char fde_encoding
;
2579 unsigned char lsda_encoding
;
2580 unsigned char signal_frame
;
2581 unsigned char aug_z_format
;
2582 unsigned char state_sp
;
2583 struct frame_state state
;
2584 struct frame_state state_stack
[MAX_SAVED_STATES
];
2587 static ULONG_PTR
dwarf2_parse_augmentation_ptr(dwarf2_traverse_context_t
* ctx
, unsigned char encoding
)
2591 if (encoding
== DW_EH_PE_omit
) return 0;
2593 switch (encoding
& 0xf0)
2598 case DW_EH_PE_pcrel
:
2599 base
= (ULONG_PTR
)ctx
->data
;
2602 FIXME("unsupported encoding %02x\n", encoding
);
2606 switch (encoding
& 0x0f)
2608 case DW_EH_PE_native
:
2609 return base
+ dwarf2_parse_addr(ctx
);
2610 case DW_EH_PE_leb128
:
2611 return base
+ dwarf2_leb128_as_unsigned(ctx
);
2612 case DW_EH_PE_data2
:
2613 return base
+ dwarf2_parse_u2(ctx
);
2614 case DW_EH_PE_data4
:
2615 return base
+ dwarf2_parse_u4(ctx
);
2616 case DW_EH_PE_data8
:
2617 return base
+ dwarf2_parse_u8(ctx
);
2618 case DW_EH_PE_signed
|DW_EH_PE_leb128
:
2619 return base
+ dwarf2_leb128_as_signed(ctx
);
2620 case DW_EH_PE_signed
|DW_EH_PE_data2
:
2621 return base
+ (signed short)dwarf2_parse_u2(ctx
);
2622 case DW_EH_PE_signed
|DW_EH_PE_data4
:
2623 return base
+ (signed int)dwarf2_parse_u4(ctx
);
2624 case DW_EH_PE_signed
|DW_EH_PE_data8
:
2625 return base
+ (LONG64
)dwarf2_parse_u8(ctx
);
2627 FIXME("unsupported encoding %02x\n", encoding
);
2632 static BOOL
parse_cie_details(dwarf2_traverse_context_t
* ctx
, struct frame_info
* info
)
2634 unsigned char version
;
2635 const char* augmentation
;
2636 const unsigned char* end
;
2639 memset(info
, 0, sizeof(*info
));
2640 info
->lsda_encoding
= DW_EH_PE_omit
;
2641 info
->aug_z_format
= 0;
2643 /* parse the CIE first */
2644 version
= dwarf2_parse_byte(ctx
);
2645 if (version
!= 1 && version
!= 3 && version
!= 4)
2647 FIXME("unknown CIE version %u at %p\n", version
, ctx
->data
- 1);
2650 augmentation
= (const char*)ctx
->data
;
2651 ctx
->data
+= strlen(augmentation
) + 1;
2656 /* skip 'address_size' and 'segment_size' */
2661 info
->code_align
= dwarf2_leb128_as_unsigned(ctx
);
2662 info
->data_align
= dwarf2_leb128_as_signed(ctx
);
2663 info
->retaddr_reg
= version
== 1 ? dwarf2_parse_byte(ctx
) :dwarf2_leb128_as_unsigned(ctx
);
2668 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
2671 TRACE("\tparsing augmentation %s\n", debugstr_a(augmentation
));
2672 if (*augmentation
) do
2674 switch (*augmentation
)
2677 len
= dwarf2_leb128_as_unsigned(ctx
);
2678 end
= ctx
->data
+ len
;
2679 info
->aug_z_format
= 1;
2682 info
->lsda_encoding
= dwarf2_parse_byte(ctx
);
2686 unsigned char encoding
= dwarf2_parse_byte(ctx
);
2687 /* throw away the indirect bit, as we don't care for the result */
2688 encoding
&= ~DW_EH_PE_indirect
;
2689 dwarf2_parse_augmentation_ptr(ctx
, encoding
); /* handler */
2693 info
->fde_encoding
= dwarf2_parse_byte(ctx
);
2696 info
->signal_frame
= 1;
2699 FIXME("unknown augmentation '%c'\n", *augmentation
);
2700 if (!end
) return FALSE
;
2702 } while (*++augmentation
);
2703 if (end
) ctx
->data
= end
;
2707 static BOOL
dwarf2_get_cie(unsigned long addr
, struct module
* module
, DWORD_PTR delta
,
2708 dwarf2_traverse_context_t
* fde_ctx
, dwarf2_traverse_context_t
* cie_ctx
,
2709 struct frame_info
* info
, BOOL in_eh_frame
)
2711 const unsigned char* ptr_blk
;
2712 const unsigned char* cie_ptr
;
2713 const unsigned char* last_cie_ptr
= (const unsigned char*)~0;
2715 unsigned long start
, range
;
2717 const BYTE
* start_data
= fde_ctx
->data
;
2719 cie_id
= in_eh_frame
? 0 : DW_CIE_ID
;
2720 /* skip 0-padding at beginning of section (alignment) */
2721 while (fde_ctx
->data
+ 2 * 4 < fde_ctx
->end_data
)
2723 if (dwarf2_parse_u4(fde_ctx
))
2729 for (; fde_ctx
->data
+ 2 * 4 < fde_ctx
->end_data
; fde_ctx
->data
= ptr_blk
)
2731 /* find the FDE for address addr (skip CIE) */
2732 len
= dwarf2_parse_u4(fde_ctx
);
2733 if (len
== 0xffffffff) FIXME("Unsupported yet 64-bit CIEs\n");
2734 ptr_blk
= fde_ctx
->data
+ len
;
2735 id
= dwarf2_parse_u4(fde_ctx
);
2738 last_cie_ptr
= fde_ctx
->data
- 8;
2739 /* we need some bits out of the CIE in order to parse all contents */
2740 if (!parse_cie_details(fde_ctx
, info
)) return FALSE
;
2741 cie_ctx
->data
= fde_ctx
->data
;
2742 cie_ctx
->end_data
= ptr_blk
;
2743 cie_ctx
->word_size
= fde_ctx
->word_size
;
2746 cie_ptr
= (in_eh_frame
) ? fde_ctx
->data
- id
- 4 : start_data
+ id
;
2747 if (cie_ptr
!= last_cie_ptr
)
2749 last_cie_ptr
= cie_ptr
;
2750 cie_ctx
->data
= cie_ptr
;
2751 cie_ctx
->word_size
= fde_ctx
->word_size
;
2752 cie_ctx
->end_data
= cie_ptr
+ 4;
2753 cie_ctx
->end_data
= cie_ptr
+ 4 + dwarf2_parse_u4(cie_ctx
);
2754 if (dwarf2_parse_u4(cie_ctx
) != cie_id
)
2756 FIXME("wrong CIE pointer at %x from FDE %x\n",
2757 (unsigned)(cie_ptr
- start_data
),
2758 (unsigned)(fde_ctx
->data
- start_data
));
2761 if (!parse_cie_details(cie_ctx
, info
)) return FALSE
;
2763 start
= delta
+ dwarf2_parse_augmentation_ptr(fde_ctx
, info
->fde_encoding
);
2764 range
= dwarf2_parse_augmentation_ptr(fde_ctx
, info
->fde_encoding
& 0x0F);
2766 if (addr
>= start
&& addr
< start
+ range
)
2768 /* reset the FDE context */
2769 fde_ctx
->end_data
= ptr_blk
;
2778 static int valid_reg(ULONG_PTR reg
)
2780 if (reg
>= NB_FRAME_REGS
) FIXME("unsupported reg %lx\n", reg
);
2781 return (reg
< NB_FRAME_REGS
);
2784 static void execute_cfa_instructions(dwarf2_traverse_context_t
* ctx
,
2785 ULONG_PTR last_ip
, struct frame_info
*info
)
2787 while (ctx
->data
< ctx
->end_data
&& info
->ip
<= last_ip
+ info
->signal_frame
)
2789 enum dwarf_call_frame_info op
= dwarf2_parse_byte(ctx
);
2795 case DW_CFA_advance_loc
:
2797 ULONG_PTR offset
= (op
& 0x3f) * info
->code_align
;
2798 TRACE("%lx: DW_CFA_advance_loc %lu\n", info
->ip
, offset
);
2804 ULONG_PTR reg
= op
& 0x3f;
2805 LONG_PTR offset
= dwarf2_leb128_as_unsigned(ctx
) * info
->data_align
;
2806 if (!valid_reg(reg
)) break;
2807 TRACE("%lx: DW_CFA_offset %s, %ld\n",
2809 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, TRUE
)),
2811 info
->state
.regs
[reg
] = offset
;
2812 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
2815 case DW_CFA_restore
:
2817 ULONG_PTR reg
= op
& 0x3f;
2818 if (!valid_reg(reg
)) break;
2819 TRACE("%lx: DW_CFA_restore %s\n",
2821 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, TRUE
)));
2822 info
->state
.rules
[reg
] = RULE_UNSET
;
2831 case DW_CFA_set_loc
:
2833 ULONG_PTR loc
= dwarf2_parse_augmentation_ptr(ctx
, info
->fde_encoding
);
2834 TRACE("%lx: DW_CFA_set_loc %lx\n", info
->ip
, loc
);
2838 case DW_CFA_advance_loc1
:
2840 ULONG_PTR offset
= dwarf2_parse_byte(ctx
) * info
->code_align
;
2841 TRACE("%lx: DW_CFA_advance_loc1 %lu\n", info
->ip
, offset
);
2845 case DW_CFA_advance_loc2
:
2847 ULONG_PTR offset
= dwarf2_parse_u2(ctx
) * info
->code_align
;
2848 TRACE("%lx: DW_CFA_advance_loc2 %lu\n", info
->ip
, offset
);
2852 case DW_CFA_advance_loc4
:
2854 ULONG_PTR offset
= dwarf2_parse_u4(ctx
) * info
->code_align
;
2855 TRACE("%lx: DW_CFA_advance_loc4 %lu\n", info
->ip
, offset
);
2859 case DW_CFA_offset_extended
:
2860 case DW_CFA_offset_extended_sf
:
2862 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2863 LONG_PTR offset
= (op
== DW_CFA_offset_extended
) ? dwarf2_leb128_as_unsigned(ctx
) * info
->data_align
2864 : dwarf2_leb128_as_signed(ctx
) * info
->data_align
;
2865 if (!valid_reg(reg
)) break;
2866 TRACE("%lx: DW_CFA_offset_extended %s, %ld\n",
2868 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, TRUE
)),
2870 info
->state
.regs
[reg
] = offset
;
2871 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
2874 case DW_CFA_restore_extended
:
2876 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2877 if (!valid_reg(reg
)) break;
2878 TRACE("%lx: DW_CFA_restore_extended %s\n",
2880 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, TRUE
)));
2881 info
->state
.rules
[reg
] = RULE_UNSET
;
2884 case DW_CFA_undefined
:
2886 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2887 if (!valid_reg(reg
)) break;
2888 TRACE("%lx: DW_CFA_undefined %s\n",
2890 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, TRUE
)));
2891 info
->state
.rules
[reg
] = RULE_UNDEFINED
;
2894 case DW_CFA_same_value
:
2896 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2897 if (!valid_reg(reg
)) break;
2898 TRACE("%lx: DW_CFA_same_value %s\n",
2900 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, TRUE
)));
2901 info
->state
.regs
[reg
] = reg
;
2902 info
->state
.rules
[reg
] = RULE_SAME
;
2905 case DW_CFA_register
:
2907 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2908 ULONG_PTR reg2
= dwarf2_leb128_as_unsigned(ctx
);
2909 if (!valid_reg(reg
) || !valid_reg(reg2
)) break;
2910 TRACE("%lx: DW_CFA_register %s == %s\n",
2912 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, TRUE
)),
2913 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg2
, TRUE
)));
2914 info
->state
.regs
[reg
] = reg2
;
2915 info
->state
.rules
[reg
] = RULE_OTHER_REG
;
2918 case DW_CFA_remember_state
:
2919 TRACE("%lx: DW_CFA_remember_state\n", info
->ip
);
2920 if (info
->state_sp
>= MAX_SAVED_STATES
)
2921 FIXME("%lx: DW_CFA_remember_state too many nested saves\n", info
->ip
);
2923 info
->state_stack
[info
->state_sp
++] = info
->state
;
2925 case DW_CFA_restore_state
:
2926 TRACE("%lx: DW_CFA_restore_state\n", info
->ip
);
2927 if (!info
->state_sp
)
2928 FIXME("%lx: DW_CFA_restore_state without corresponding save\n", info
->ip
);
2930 info
->state
= info
->state_stack
[--info
->state_sp
];
2932 case DW_CFA_def_cfa
:
2933 case DW_CFA_def_cfa_sf
:
2935 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2936 ULONG_PTR offset
= (op
== DW_CFA_def_cfa
) ? dwarf2_leb128_as_unsigned(ctx
)
2937 : dwarf2_leb128_as_signed(ctx
) * info
->data_align
;
2938 if (!valid_reg(reg
)) break;
2939 TRACE("%lx: DW_CFA_def_cfa %s, %ld\n",
2941 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, TRUE
)),
2943 info
->state
.cfa_reg
= reg
;
2944 info
->state
.cfa_offset
= offset
;
2945 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
2948 case DW_CFA_def_cfa_register
:
2950 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2951 if (!valid_reg(reg
)) break;
2952 TRACE("%lx: DW_CFA_def_cfa_register %s\n",
2954 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, TRUE
)));
2955 info
->state
.cfa_reg
= reg
;
2956 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
2959 case DW_CFA_def_cfa_offset
:
2960 case DW_CFA_def_cfa_offset_sf
:
2962 ULONG_PTR offset
= (op
== DW_CFA_def_cfa_offset
) ? dwarf2_leb128_as_unsigned(ctx
)
2963 : dwarf2_leb128_as_signed(ctx
) * info
->data_align
;
2964 TRACE("%lx: DW_CFA_def_cfa_offset %ld\n", info
->ip
, offset
);
2965 info
->state
.cfa_offset
= offset
;
2966 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
2969 case DW_CFA_def_cfa_expression
:
2971 ULONG_PTR expr
= (ULONG_PTR
)ctx
->data
;
2972 ULONG_PTR len
= dwarf2_leb128_as_unsigned(ctx
);
2973 TRACE("%lx: DW_CFA_def_cfa_expression %lx-%lx\n", info
->ip
, expr
, expr
+len
);
2974 info
->state
.cfa_offset
= expr
;
2975 info
->state
.cfa_rule
= RULE_VAL_EXPRESSION
;
2979 case DW_CFA_expression
:
2980 case DW_CFA_val_expression
:
2982 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2983 ULONG_PTR expr
= (ULONG_PTR
)ctx
->data
;
2984 ULONG_PTR len
= dwarf2_leb128_as_unsigned(ctx
);
2985 if (!valid_reg(reg
)) break;
2986 TRACE("%lx: DW_CFA_%sexpression %s %lx-%lx\n",
2987 info
->ip
, (op
== DW_CFA_expression
) ? "" : "val_",
2988 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
, TRUE
)),
2990 info
->state
.regs
[reg
] = expr
;
2991 info
->state
.rules
[reg
] = (op
== DW_CFA_expression
) ? RULE_EXPRESSION
: RULE_VAL_EXPRESSION
;
2995 case DW_CFA_GNU_args_size
:
2996 /* FIXME: should check that GCC is the compiler for this CU */
2998 ULONG_PTR args
= dwarf2_leb128_as_unsigned(ctx
);
2999 TRACE("%lx: DW_CFA_GNU_args_size %lu\n", info
->ip
, args
);
3004 FIXME("%lx: unknown CFA opcode %02x\n", info
->ip
, op
);
3010 /* retrieve a context register from its dwarf number */
3011 static DWORD64
get_context_reg(struct cpu_stack_walk
*csw
, union ctx
*context
,
3014 unsigned regno
= csw
->cpu
->map_dwarf_register(dw_reg
, TRUE
), sz
;
3015 void* ptr
= csw
->cpu
->fetch_context_reg(context
, regno
, &sz
);
3018 return *(DWORD64
*)ptr
;
3020 return *(DWORD
*)ptr
;
3022 FIXME("unhandled size %d\n", sz
);
3026 /* set a context register from its dwarf number */
3027 static void set_context_reg(struct cpu_stack_walk
* csw
, union ctx
*context
,
3028 ULONG_PTR dw_reg
, ULONG_PTR val
, BOOL isdebuggee
)
3030 unsigned regno
= csw
->cpu
->map_dwarf_register(dw_reg
, TRUE
), sz
;
3031 ULONG_PTR
* ptr
= csw
->cpu
->fetch_context_reg(context
, regno
, &sz
);
3037 if (sz
> sizeof(tmp
))
3039 FIXME("register %lu/%u size is too wide: %u\n", dw_reg
, regno
, sz
);
3042 if (!sw_read_mem(csw
, val
, tmp
, sz
))
3044 WARN("Couldn't read memory at %p\n", (void*)val
);
3047 memcpy(ptr
, tmp
, sz
);
3051 if (sz
!= sizeof(ULONG_PTR
))
3053 FIXME("assigning to register %lu/%u of wrong size %u\n", dw_reg
, regno
, sz
);
3060 /* copy a register from one context to another using dwarf number */
3061 static void copy_context_reg(struct cpu_stack_walk
*csw
,
3062 union ctx
*dstcontext
, ULONG_PTR dwregdst
,
3063 union ctx
*srccontext
, ULONG_PTR dwregsrc
)
3065 unsigned regdstno
= csw
->cpu
->map_dwarf_register(dwregdst
, TRUE
), szdst
;
3066 unsigned regsrcno
= csw
->cpu
->map_dwarf_register(dwregsrc
, TRUE
), szsrc
;
3067 ULONG_PTR
* ptrdst
= csw
->cpu
->fetch_context_reg(dstcontext
, regdstno
, &szdst
);
3068 ULONG_PTR
* ptrsrc
= csw
->cpu
->fetch_context_reg(srccontext
, regsrcno
, &szsrc
);
3072 FIXME("Cannot copy register %lu/%u => %lu/%u because of size mismatch (%u => %u)\n",
3073 dwregsrc
, regsrcno
, dwregdst
, regdstno
, szsrc
, szdst
);
3076 memcpy(ptrdst
, ptrsrc
, szdst
);
3079 static ULONG_PTR
eval_expression(const struct module
* module
, struct cpu_stack_walk
* csw
,
3080 const unsigned char* zp
, union ctx
*context
)
3082 dwarf2_traverse_context_t ctx
;
3083 ULONG_PTR reg
, sz
, tmp
;
3089 ctx
.end_data
= zp
+ 4;
3090 len
= dwarf2_leb128_as_unsigned(&ctx
);
3091 ctx
.end_data
= ctx
.data
+ len
;
3092 ctx
.word_size
= module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
;
3094 while (ctx
.data
< ctx
.end_data
)
3096 unsigned char opcode
= dwarf2_parse_byte(&ctx
);
3098 if (opcode
>= DW_OP_lit0
&& opcode
<= DW_OP_lit31
)
3099 stack
[++sp
] = opcode
- DW_OP_lit0
;
3100 else if (opcode
>= DW_OP_reg0
&& opcode
<= DW_OP_reg31
)
3101 stack
[++sp
] = get_context_reg(csw
, context
, opcode
- DW_OP_reg0
);
3102 else if (opcode
>= DW_OP_breg0
&& opcode
<= DW_OP_breg31
)
3103 stack
[++sp
] = get_context_reg(csw
, context
, opcode
- DW_OP_breg0
)
3104 + dwarf2_leb128_as_signed(&ctx
);
3105 else switch (opcode
)
3107 case DW_OP_nop
: break;
3108 case DW_OP_addr
: stack
[++sp
] = dwarf2_parse_addr(&ctx
); break;
3109 case DW_OP_const1u
: stack
[++sp
] = dwarf2_parse_byte(&ctx
); break;
3110 case DW_OP_const1s
: stack
[++sp
] = (signed char)dwarf2_parse_byte(&ctx
); break;
3111 case DW_OP_const2u
: stack
[++sp
] = dwarf2_parse_u2(&ctx
); break;
3112 case DW_OP_const2s
: stack
[++sp
] = (short)dwarf2_parse_u2(&ctx
); break;
3113 case DW_OP_const4u
: stack
[++sp
] = dwarf2_parse_u4(&ctx
); break;
3114 case DW_OP_const4s
: stack
[++sp
] = (signed int)dwarf2_parse_u4(&ctx
); break;
3115 case DW_OP_const8u
: stack
[++sp
] = dwarf2_parse_u8(&ctx
); break;
3116 case DW_OP_const8s
: stack
[++sp
] = (LONG_PTR
)dwarf2_parse_u8(&ctx
); break;
3117 case DW_OP_constu
: stack
[++sp
] = dwarf2_leb128_as_unsigned(&ctx
); break;
3118 case DW_OP_consts
: stack
[++sp
] = dwarf2_leb128_as_signed(&ctx
); break;
3121 if (!sw_read_mem(csw
, stack
[sp
], &tmp
, ctx
.word_size
))
3123 ERR("Couldn't read memory at %s\n", wine_dbgstr_longlong(stack
[sp
]));
3128 case DW_OP_dup
: stack
[sp
+ 1] = stack
[sp
]; sp
++; break;
3129 case DW_OP_drop
: sp
--; break;
3130 case DW_OP_over
: stack
[sp
+ 1] = stack
[sp
- 1]; sp
++; break;
3131 case DW_OP_pick
: stack
[sp
+ 1] = stack
[sp
- dwarf2_parse_byte(&ctx
)]; sp
++; break;
3132 case DW_OP_swap
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = tmp
; break;
3133 case DW_OP_rot
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = stack
[sp
-2]; stack
[sp
-2] = tmp
; break;
3134 case DW_OP_abs
: stack
[sp
] = labs(stack
[sp
]); break;
3135 case DW_OP_neg
: stack
[sp
] = -stack
[sp
]; break;
3136 case DW_OP_not
: stack
[sp
] = ~stack
[sp
]; break;
3137 case DW_OP_and
: stack
[sp
-1] &= stack
[sp
]; sp
--; break;
3138 case DW_OP_or
: stack
[sp
-1] |= stack
[sp
]; sp
--; break;
3139 case DW_OP_minus
: stack
[sp
-1] -= stack
[sp
]; sp
--; break;
3140 case DW_OP_mul
: stack
[sp
-1] *= stack
[sp
]; sp
--; break;
3141 case DW_OP_plus
: stack
[sp
-1] += stack
[sp
]; sp
--; break;
3142 case DW_OP_xor
: stack
[sp
-1] ^= stack
[sp
]; sp
--; break;
3143 case DW_OP_shl
: stack
[sp
-1] <<= stack
[sp
]; sp
--; break;
3144 case DW_OP_shr
: stack
[sp
-1] >>= stack
[sp
]; sp
--; break;
3145 case DW_OP_plus_uconst
: stack
[sp
] += dwarf2_leb128_as_unsigned(&ctx
); break;
3146 case DW_OP_shra
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (1 << stack
[sp
]); sp
--; break;
3147 case DW_OP_div
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (LONG_PTR
)stack
[sp
]; sp
--; break;
3148 case DW_OP_mod
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] % (LONG_PTR
)stack
[sp
]; sp
--; break;
3149 case DW_OP_ge
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] >= (LONG_PTR
)stack
[sp
]); sp
--; break;
3150 case DW_OP_gt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] > (LONG_PTR
)stack
[sp
]); sp
--; break;
3151 case DW_OP_le
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] <= (LONG_PTR
)stack
[sp
]); sp
--; break;
3152 case DW_OP_lt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] < (LONG_PTR
)stack
[sp
]); sp
--; break;
3153 case DW_OP_eq
: stack
[sp
-1] = (stack
[sp
-1] == stack
[sp
]); sp
--; break;
3154 case DW_OP_ne
: stack
[sp
-1] = (stack
[sp
-1] != stack
[sp
]); sp
--; break;
3155 case DW_OP_skip
: tmp
= (short)dwarf2_parse_u2(&ctx
); ctx
.data
+= tmp
; break;
3156 case DW_OP_bra
: tmp
= (short)dwarf2_parse_u2(&ctx
); if (!stack
[sp
--]) ctx
.data
+= tmp
; break;
3157 case DW_OP_GNU_encoded_addr
:
3158 tmp
= dwarf2_parse_byte(&ctx
);
3159 stack
[++sp
] = dwarf2_parse_augmentation_ptr(&ctx
, tmp
);
3162 stack
[++sp
] = get_context_reg(csw
, context
, dwarf2_leb128_as_unsigned(&ctx
));
3165 reg
= dwarf2_leb128_as_unsigned(&ctx
);
3166 tmp
= dwarf2_leb128_as_signed(&ctx
);
3167 stack
[++sp
] = get_context_reg(csw
, context
, reg
) + tmp
;
3169 case DW_OP_deref_size
:
3170 sz
= dwarf2_parse_byte(&ctx
);
3171 if (!sw_read_mem(csw
, stack
[sp
], &tmp
, sz
))
3173 ERR("Couldn't read memory at %s\n", wine_dbgstr_longlong(stack
[sp
]));
3176 /* do integral promotion */
3179 case 1: stack
[sp
] = *(unsigned char*)&tmp
; break;
3180 case 2: stack
[sp
] = *(unsigned short*)&tmp
; break;
3181 case 4: stack
[sp
] = *(unsigned int*)&tmp
; break;
3182 case 8: stack
[sp
] = *(ULONG_PTR
*)&tmp
; break; /* FIXME: won't work on 32bit platform */
3183 default: FIXME("Unknown size for deref 0x%lx\n", sz
);
3187 FIXME("unhandled opcode %02x\n", opcode
);
3193 static void apply_frame_state(const struct module
* module
, struct cpu_stack_walk
* csw
,
3194 union ctx
*context
, struct frame_state
*state
, DWORD64
*cfa
)
3198 union ctx new_context
= *context
;
3200 switch (state
->cfa_rule
)
3202 case RULE_EXPRESSION
:
3203 *cfa
= eval_expression(module
, csw
, (const unsigned char*)state
->cfa_offset
, context
);
3204 if (!sw_read_mem(csw
, *cfa
, cfa
, csw
->cpu
->word_size
))
3206 WARN("Couldn't read memory at %s\n", wine_dbgstr_longlong(*cfa
));
3210 case RULE_VAL_EXPRESSION
:
3211 *cfa
= eval_expression(module
, csw
, (const unsigned char*)state
->cfa_offset
, context
);
3214 *cfa
= get_context_reg(csw
, context
, state
->cfa_reg
) + state
->cfa_offset
;
3219 for (i
= 0; i
< NB_FRAME_REGS
; i
++)
3221 switch (state
->rules
[i
])
3224 case RULE_UNDEFINED
:
3227 case RULE_CFA_OFFSET
:
3228 set_context_reg(csw
, &new_context
, i
, *cfa
+ state
->regs
[i
], TRUE
);
3230 case RULE_OTHER_REG
:
3231 copy_context_reg(csw
, &new_context
, i
, context
, state
->regs
[i
]);
3233 case RULE_EXPRESSION
:
3234 value
= eval_expression(module
, csw
, (const unsigned char*)state
->regs
[i
], context
);
3235 set_context_reg(csw
, &new_context
, i
, value
, TRUE
);
3237 case RULE_VAL_EXPRESSION
:
3238 value
= eval_expression(module
, csw
, (const unsigned char*)state
->regs
[i
], context
);
3239 set_context_reg(csw
, &new_context
, i
, value
, FALSE
);
3243 *context
= new_context
;
3246 /***********************************************************************
3247 * dwarf2_virtual_unwind
3250 BOOL
dwarf2_virtual_unwind(struct cpu_stack_walk
*csw
, ULONG_PTR ip
,
3251 union ctx
*context
, DWORD64
*cfa
)
3253 struct module_pair pair
;
3254 struct frame_info info
;
3255 dwarf2_traverse_context_t cie_ctx
, fde_ctx
;
3256 struct module_format
* modfmt
;
3257 const unsigned char* end
;
3260 if (!(pair
.pcs
= process_find_by_handle(csw
->hProcess
)) ||
3261 !(pair
.requested
= module_find_by_addr(pair
.pcs
, ip
, DMT_UNKNOWN
)) ||
3262 !module_get_debug(&pair
))
3264 modfmt
= pair
.effective
->format_info
[DFI_DWARF
];
3265 if (!modfmt
) return FALSE
;
3266 memset(&info
, 0, sizeof(info
));
3267 fde_ctx
.data
= modfmt
->u
.dwarf2_info
->eh_frame
.address
;
3268 fde_ctx
.end_data
= fde_ctx
.data
+ modfmt
->u
.dwarf2_info
->eh_frame
.size
;
3269 fde_ctx
.word_size
= modfmt
->u
.dwarf2_info
->word_size
;
3270 /* let offsets relative to the eh_frame sections be correctly computed, as we'll map
3271 * in this process the IMAGE section at a different address as the one expected by
3274 delta
= pair
.effective
->module
.BaseOfImage
+ modfmt
->u
.dwarf2_info
->eh_frame
.rva
-
3275 (DWORD_PTR
)modfmt
->u
.dwarf2_info
->eh_frame
.address
;
3276 if (!dwarf2_get_cie(ip
, pair
.effective
, delta
, &fde_ctx
, &cie_ctx
, &info
, TRUE
))
3278 fde_ctx
.data
= modfmt
->u
.dwarf2_info
->debug_frame
.address
;
3279 fde_ctx
.end_data
= fde_ctx
.data
+ modfmt
->u
.dwarf2_info
->debug_frame
.size
;
3280 fde_ctx
.word_size
= modfmt
->u
.dwarf2_info
->word_size
;
3281 delta
= pair
.effective
->reloc_delta
;
3282 if (!dwarf2_get_cie(ip
, pair
.effective
, delta
, &fde_ctx
, &cie_ctx
, &info
, FALSE
))
3284 TRACE("Couldn't find information for %lx\n", ip
);
3289 TRACE("function %lx/%lx code_align %lu data_align %ld retaddr %s\n",
3290 ip
, info
.ip
, info
.code_align
, info
.data_align
,
3291 csw
->cpu
->fetch_regname(csw
->cpu
->map_dwarf_register(info
.retaddr_reg
, TRUE
)));
3293 /* if at very beginning of function, return and use default unwinder */
3294 if (ip
== info
.ip
) return FALSE
;
3295 execute_cfa_instructions(&cie_ctx
, ip
, &info
);
3297 if (info
.aug_z_format
) /* get length of augmentation data */
3299 ULONG_PTR len
= dwarf2_leb128_as_unsigned(&fde_ctx
);
3300 end
= fde_ctx
.data
+ len
;
3303 dwarf2_parse_augmentation_ptr(&fde_ctx
, info
.lsda_encoding
); /* handler_data */
3304 if (end
) fde_ctx
.data
= end
;
3306 execute_cfa_instructions(&fde_ctx
, ip
, &info
);
3308 /* if there is no information about retaddr, use default unwinder */
3309 if (info
.state
.rules
[info
.retaddr_reg
] == RULE_UNSET
) return FALSE
;
3311 apply_frame_state(pair
.effective
, csw
, context
, &info
.state
, cfa
);
3316 static void dwarf2_location_compute(struct process
* pcs
,
3317 const struct module_format
* modfmt
,
3318 const struct symt_function
* func
,
3319 struct location
* loc
)
3321 struct location frame
;
3324 dwarf2_traverse_context_t lctx
;
3326 if (!func
->container
|| func
->container
->tag
!= SymTagCompiland
)
3328 WARN("We'd expect function %s's container to exist and be a compiland\n", debugstr_a(func
->hash_elt
.name
));
3329 err
= loc_err_internal
;
3333 /* instruction pointer relative to compiland's start */
3334 ip
= pcs
->ctx_frame
.InstructionOffset
- ((struct symt_compiland
*)func
->container
)->address
;
3336 if ((err
= loc_compute_frame(pcs
, modfmt
, func
, ip
, &frame
)) == 0)
3340 case loc_dwarf2_location_list
:
3341 /* Then, if the variable has a location list, find it !! */
3342 if (dwarf2_lookup_loclist(modfmt
,
3343 modfmt
->u
.dwarf2_info
->debug_loc
.address
+ loc
->offset
,
3346 err
= loc_err_out_of_scope
;
3348 case loc_dwarf2_block
:
3349 /* or if we have a copy of an existing block, get ready for it */
3351 unsigned* ptr
= (unsigned*)loc
->offset
;
3353 lctx
.data
= (const BYTE
*)(ptr
+ 1);
3354 lctx
.end_data
= lctx
.data
+ *ptr
;
3355 lctx
.word_size
= modfmt
->u
.dwarf2_info
->word_size
;
3358 /* now get the variable */
3359 err
= compute_location(&lctx
, loc
, pcs
->handle
, &frame
);
3366 WARN("Unsupported local kind %d\n", loc
->kind
);
3367 err
= loc_err_internal
;
3373 loc
->kind
= loc_register
;
3379 static void *zalloc(void *priv
, uInt items
, uInt sz
)
3381 return HeapAlloc(GetProcessHeap(), 0, items
* sz
);
3384 static void zfree(void *priv
, void *addr
)
3386 HeapFree(GetProcessHeap(), 0, addr
);
3389 static inline BOOL
dwarf2_init_zsection(dwarf2_section_t
* section
,
3390 const char* zsectname
,
3391 struct image_section_map
* ism
)
3398 BYTE
*addr
, *sect
= (BYTE
*)image_map_section(ism
);
3399 size_t sz
= image_get_map_size(ism
);
3401 if (sz
<= 12 || memcmp(sect
, "ZLIB", 4))
3403 ERR("invalid compressed section %s\n", debugstr_a(zsectname
));
3407 #ifdef WORDS_BIGENDIAN
3408 li
.u
.HighPart
= *(DWORD
*)§
[4];
3409 li
.u
.LowPart
= *(DWORD
*)§
[8];
3411 li
.u
.HighPart
= RtlUlongByteSwap(*(DWORD
*)§
[4]);
3412 li
.u
.LowPart
= RtlUlongByteSwap(*(DWORD
*)§
[8]);
3415 addr
= HeapAlloc(GetProcessHeap(), 0, li
.QuadPart
);
3419 z
.next_in
= §
[12];
3420 z
.avail_in
= sz
- 12;
3425 res
= inflateInit(&z
);
3428 FIXME("inflateInit failed with %i / %s\n", res
, debugstr_a(z
.msg
));
3433 z
.next_out
= addr
+ z
.total_out
;
3434 z
.avail_out
= li
.QuadPart
- z
.total_out
;
3435 res
= inflate(&z
, Z_FINISH
);
3436 } while (z
.avail_in
&& res
== Z_STREAM_END
);
3438 if (res
!= Z_STREAM_END
)
3440 FIXME("Decompression failed with %i / %s\n", res
, debugstr_a(z
.msg
));
3445 section
->compressed
= TRUE
;
3446 section
->address
= addr
;
3447 section
->rva
= image_get_map_rva(ism
);
3448 section
->size
= z
.total_out
;
3454 HeapFree(GetProcessHeap(), 0, addr
);
3456 image_unmap_section(ism
);
3462 static inline BOOL
dwarf2_init_section(dwarf2_section_t
* section
, struct image_file_map
* fmap
,
3463 const char* sectname
, const char* zsectname
,
3464 struct image_section_map
* ism
)
3466 struct image_section_map local_ism
;
3468 if (!ism
) ism
= &local_ism
;
3470 section
->compressed
= FALSE
;
3471 if (image_find_section(fmap
, sectname
, ism
))
3473 section
->address
= (const BYTE
*)image_map_section(ism
);
3474 section
->size
= image_get_map_size(ism
);
3475 section
->rva
= image_get_map_rva(ism
);
3479 section
->address
= NULL
;
3483 if (zsectname
&& image_find_section(fmap
, zsectname
, ism
))
3486 return dwarf2_init_zsection(section
, zsectname
, ism
);
3488 FIXME("dbghelp not built with zlib, but compressed section found\n" );
3495 static inline void dwarf2_fini_section(dwarf2_section_t
* section
)
3497 if (section
->compressed
)
3498 HeapFree(GetProcessHeap(), 0, (void*)section
->address
);
3501 static void dwarf2_module_remove(struct process
* pcs
, struct module_format
* modfmt
)
3503 dwarf2_fini_section(&modfmt
->u
.dwarf2_info
->debug_loc
);
3504 dwarf2_fini_section(&modfmt
->u
.dwarf2_info
->debug_frame
);
3505 HeapFree(GetProcessHeap(), 0, modfmt
);
3508 BOOL
dwarf2_parse(struct module
* module
, unsigned long load_offset
,
3509 const struct elf_thunk_area
* thunks
,
3510 struct image_file_map
* fmap
)
3512 dwarf2_section_t eh_frame
, section
[section_max
];
3513 dwarf2_traverse_context_t mod_ctx
;
3514 struct image_section_map debug_sect
, debug_str_sect
, debug_abbrev_sect
,
3515 debug_line_sect
, debug_ranges_sect
, eh_frame_sect
;
3517 struct module_format
* dwarf2_modfmt
;
3519 dwarf2_init_section(&eh_frame
, fmap
, ".eh_frame", NULL
, &eh_frame_sect
);
3520 dwarf2_init_section(§ion
[section_debug
], fmap
, ".debug_info", ".zdebug_info", &debug_sect
);
3521 dwarf2_init_section(§ion
[section_abbrev
], fmap
, ".debug_abbrev", ".zdebug_abbrev", &debug_abbrev_sect
);
3522 dwarf2_init_section(§ion
[section_string
], fmap
, ".debug_str", ".zdebug_str", &debug_str_sect
);
3523 dwarf2_init_section(§ion
[section_line
], fmap
, ".debug_line", ".zdebug_line", &debug_line_sect
);
3524 dwarf2_init_section(§ion
[section_ranges
], fmap
, ".debug_ranges", ".zdebug_ranges", &debug_ranges_sect
);
3526 /* to do anything useful we need either .eh_frame or .debug_info */
3527 if ((!eh_frame
.address
|| eh_frame
.address
== IMAGE_NO_MAP
) &&
3528 (!section
[section_debug
].address
|| section
[section_debug
].address
== IMAGE_NO_MAP
))
3534 if (fmap
->modtype
== DMT_ELF
&& debug_sect
.fmap
)
3536 /* debug info might have a different base address than .so file
3537 * when elf file is prelinked after splitting off debug info
3538 * adjust symbol base addresses accordingly
3540 load_offset
+= fmap
->u
.elf
.elf_start
- debug_sect
.fmap
->u
.elf
.elf_start
;
3543 TRACE("Loading Dwarf2 information for %s\n", debugstr_w(module
->module
.ModuleName
));
3545 mod_ctx
.data
= section
[section_debug
].address
;
3546 mod_ctx
.end_data
= mod_ctx
.data
+ section
[section_debug
].size
;
3547 mod_ctx
.word_size
= 0; /* will be correctly set later on */
3549 dwarf2_modfmt
= HeapAlloc(GetProcessHeap(), 0,
3550 sizeof(*dwarf2_modfmt
) + sizeof(*dwarf2_modfmt
->u
.dwarf2_info
));
3556 dwarf2_modfmt
->module
= module
;
3557 dwarf2_modfmt
->remove
= dwarf2_module_remove
;
3558 dwarf2_modfmt
->loc_compute
= dwarf2_location_compute
;
3559 dwarf2_modfmt
->u
.dwarf2_info
= (struct dwarf2_module_info_s
*)(dwarf2_modfmt
+ 1);
3560 dwarf2_modfmt
->u
.dwarf2_info
->word_size
= 0; /* will be correctly set later on */
3561 dwarf2_modfmt
->module
->format_info
[DFI_DWARF
] = dwarf2_modfmt
;
3563 /* As we'll need later some sections' content, we won't unmap these
3564 * sections upon existing this function
3566 dwarf2_init_section(&dwarf2_modfmt
->u
.dwarf2_info
->debug_loc
, fmap
, ".debug_loc", ".zdebug_loc", NULL
);
3567 dwarf2_init_section(&dwarf2_modfmt
->u
.dwarf2_info
->debug_frame
, fmap
, ".debug_frame", ".zdebug_frame", NULL
);
3568 dwarf2_modfmt
->u
.dwarf2_info
->eh_frame
= eh_frame
;
3570 while (mod_ctx
.data
< mod_ctx
.end_data
)
3572 dwarf2_parse_compilation_unit(section
, dwarf2_modfmt
->module
, thunks
, &mod_ctx
, load_offset
);
3574 dwarf2_modfmt
->module
->module
.SymType
= SymDia
;
3575 dwarf2_modfmt
->module
->module
.CVSig
= 'D' | ('W' << 8) | ('A' << 16) | ('R' << 24);
3576 /* FIXME: we could have a finer grain here */
3577 dwarf2_modfmt
->module
->module
.GlobalSymbols
= TRUE
;
3578 dwarf2_modfmt
->module
->module
.TypeInfo
= TRUE
;
3579 dwarf2_modfmt
->module
->module
.SourceIndexed
= TRUE
;
3580 dwarf2_modfmt
->module
->module
.Publics
= TRUE
;
3582 /* set the word_size for eh_frame parsing */
3583 dwarf2_modfmt
->u
.dwarf2_info
->word_size
= fmap
->addr_size
/ 8;
3586 dwarf2_fini_section(§ion
[section_debug
]);
3587 dwarf2_fini_section(§ion
[section_abbrev
]);
3588 dwarf2_fini_section(§ion
[section_string
]);
3589 dwarf2_fini_section(§ion
[section_line
]);
3590 dwarf2_fini_section(§ion
[section_ranges
]);
3592 image_unmap_section(&debug_sect
);
3593 image_unmap_section(&debug_abbrev_sect
);
3594 image_unmap_section(&debug_str_sect
);
3595 image_unmap_section(&debug_line_sect
);
3596 image_unmap_section(&debug_ranges_sect
);
3597 if (!ret
) image_unmap_section(&eh_frame_sect
);