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_ref_addr
:
466 case DW_FORM_addr
: step
= ctx
->word_size
; break;
469 case DW_FORM_ref1
: step
= 1; break;
471 case DW_FORM_ref2
: step
= 2; break;
474 case DW_FORM_strp
: step
= 4; break;
476 case DW_FORM_ref8
: step
= 8; break;
478 case DW_FORM_ref_udata
:
479 case DW_FORM_udata
: step
= dwarf2_leb128_length(ctx
); break;
480 case DW_FORM_string
: step
= strlen((const char*)ctx
->data
) + 1; break;
481 case DW_FORM_block
: step
= dwarf2_leb128_as_unsigned(ctx
); break;
482 case DW_FORM_block1
: step
= dwarf2_parse_byte(ctx
); break;
483 case DW_FORM_block2
: step
= dwarf2_parse_u2(ctx
); break;
484 case DW_FORM_block4
: step
= dwarf2_parse_u4(ctx
); break;
486 FIXME("Unhandled attribute form %lx\n", abbrev_attr
->form
);
492 static void dwarf2_fill_attr(const dwarf2_parse_context_t
* ctx
,
493 const dwarf2_abbrev_entry_attr_t
* abbrev_attr
,
494 const unsigned char* data
,
495 struct attribute
* attr
)
497 attr
->form
= abbrev_attr
->form
;
500 case DW_FORM_ref_addr
:
502 attr
->u
.uvalue
= dwarf2_get_addr(data
,
503 ctx
->module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
);
504 TRACE("addr<0x%lx>\n", attr
->u
.uvalue
);
508 attr
->u
.uvalue
= dwarf2_get_byte(data
);
509 TRACE("flag<0x%lx>\n", attr
->u
.uvalue
);
513 attr
->u
.uvalue
= dwarf2_get_byte(data
);
514 TRACE("data1<%lu>\n", attr
->u
.uvalue
);
518 attr
->u
.uvalue
= dwarf2_get_u2(data
);
519 TRACE("data2<%lu>\n", attr
->u
.uvalue
);
523 attr
->u
.uvalue
= dwarf2_get_u4(data
);
524 TRACE("data4<%lu>\n", attr
->u
.uvalue
);
528 attr
->u
.lluvalue
= dwarf2_get_u8(data
);
529 TRACE("data8<%s>\n", wine_dbgstr_longlong(attr
->u
.uvalue
));
533 attr
->u
.uvalue
= ctx
->ref_offset
+ dwarf2_get_byte(data
);
534 TRACE("ref1<0x%lx>\n", attr
->u
.uvalue
);
538 attr
->u
.uvalue
= ctx
->ref_offset
+ dwarf2_get_u2(data
);
539 TRACE("ref2<0x%lx>\n", attr
->u
.uvalue
);
543 attr
->u
.uvalue
= ctx
->ref_offset
+ dwarf2_get_u4(data
);
544 TRACE("ref4<0x%lx>\n", attr
->u
.uvalue
);
548 FIXME("Unhandled 64-bit support\n");
552 attr
->u
.svalue
= dwarf2_get_leb128_as_signed(data
, NULL
);
555 case DW_FORM_ref_udata
:
556 attr
->u
.uvalue
= dwarf2_get_leb128_as_unsigned(data
, NULL
);
560 attr
->u
.uvalue
= dwarf2_get_leb128_as_unsigned(data
, NULL
);
564 attr
->u
.string
= (const char *)data
;
565 TRACE("string<%s>\n", attr
->u
.string
);
570 unsigned long offset
= dwarf2_get_u4(data
);
571 attr
->u
.string
= (const char*)ctx
->sections
[section_string
].address
+ offset
;
573 TRACE("strp<%s>\n", attr
->u
.string
);
577 attr
->u
.block
.size
= dwarf2_get_leb128_as_unsigned(data
, &attr
->u
.block
.ptr
);
581 attr
->u
.block
.size
= dwarf2_get_byte(data
);
582 attr
->u
.block
.ptr
= data
+ 1;
586 attr
->u
.block
.size
= dwarf2_get_u2(data
);
587 attr
->u
.block
.ptr
= data
+ 2;
591 attr
->u
.block
.size
= dwarf2_get_u4(data
);
592 attr
->u
.block
.ptr
= data
+ 4;
596 FIXME("Unhandled attribute form %lx\n", abbrev_attr
->form
);
601 static BOOL
dwarf2_find_attribute(const dwarf2_parse_context_t
* ctx
,
602 const dwarf2_debug_info_t
* di
,
603 unsigned at
, struct attribute
* attr
)
605 unsigned i
, refidx
= 0;
606 dwarf2_abbrev_entry_attr_t
* abbrev_attr
;
607 dwarf2_abbrev_entry_attr_t
* ref_abbrev_attr
= NULL
;
609 attr
->gotten_from
= attr_direct
;
612 ref_abbrev_attr
= NULL
;
613 for (i
= 0, abbrev_attr
= di
->abbrev
->attrs
; abbrev_attr
; i
++, abbrev_attr
= abbrev_attr
->next
)
615 if (abbrev_attr
->attribute
== at
)
617 dwarf2_fill_attr(ctx
, abbrev_attr
, di
->data
[i
], attr
);
620 if ((abbrev_attr
->attribute
== DW_AT_abstract_origin
||
621 abbrev_attr
->attribute
== DW_AT_specification
) &&
625 FIXME("two references %lx and %lx\n", ref_abbrev_attr
->attribute
, abbrev_attr
->attribute
);
626 ref_abbrev_attr
= abbrev_attr
;
628 attr
->gotten_from
= (abbrev_attr
->attribute
== DW_AT_abstract_origin
) ?
629 attr_abstract_origin
: attr_specification
;
632 /* do we have either an abstract origin or a specification debug entry to look into ? */
633 if (!ref_abbrev_attr
) break;
634 dwarf2_fill_attr(ctx
, ref_abbrev_attr
, di
->data
[refidx
], attr
);
635 if (!(di
= sparse_array_find(&ctx
->debug_info_table
, attr
->u
.uvalue
)))
636 FIXME("Should have found the debug info entry\n");
641 static void dwarf2_load_one_entry(dwarf2_parse_context_t
*, dwarf2_debug_info_t
*);
643 #define Wine_DW_no_register 0x7FFFFFFF
645 static unsigned dwarf2_map_register(int regno
)
647 if (regno
== Wine_DW_no_register
)
649 FIXME("What the heck map reg 0x%x\n",regno
);
652 return dbghelp_current_cpu
->map_dwarf_register(regno
);
655 static enum location_error
656 compute_location(dwarf2_traverse_context_t
* ctx
, struct location
* loc
,
657 HANDLE hproc
, const struct location
* frame
)
659 DWORD_PTR tmp
, stack
[64];
662 BOOL piece_found
= FALSE
;
666 loc
->kind
= loc_absolute
;
667 loc
->reg
= Wine_DW_no_register
;
669 while (ctx
->data
< ctx
->end_data
)
671 op
= dwarf2_parse_byte(ctx
);
673 if (op
>= DW_OP_lit0
&& op
<= DW_OP_lit31
)
674 stack
[++stk
] = op
- DW_OP_lit0
;
675 else if (op
>= DW_OP_reg0
&& op
<= DW_OP_reg31
)
677 /* dbghelp APIs don't know how to cope with this anyway
678 * (for example 'long long' stored in two registers)
679 * FIXME: We should tell winedbg how to deal with it (sigh)
683 DWORD cvreg
= dwarf2_map_register(op
- DW_OP_reg0
);
684 if (loc
->reg
!= Wine_DW_no_register
)
685 FIXME("Only supporting one reg (%s/%d -> %s/%d)\n",
686 dbghelp_current_cpu
->fetch_regname(loc
->reg
), loc
->reg
,
687 dbghelp_current_cpu
->fetch_regname(cvreg
), cvreg
);
690 loc
->kind
= loc_register
;
692 else if (op
>= DW_OP_breg0
&& op
<= DW_OP_breg31
)
694 /* dbghelp APIs don't know how to cope with this anyway
695 * (for example 'long long' stored in two registers)
696 * FIXME: We should tell winedbg how to deal with it (sigh)
700 DWORD cvreg
= dwarf2_map_register(op
- DW_OP_breg0
);
701 if (loc
->reg
!= Wine_DW_no_register
)
702 FIXME("Only supporting one breg (%s/%d -> %s/%d)\n",
703 dbghelp_current_cpu
->fetch_regname(loc
->reg
), loc
->reg
,
704 dbghelp_current_cpu
->fetch_regname(cvreg
), cvreg
);
707 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
708 loc
->kind
= loc_regrel
;
712 case DW_OP_nop
: break;
713 case DW_OP_addr
: stack
[++stk
] = dwarf2_parse_addr(ctx
); break;
714 case DW_OP_const1u
: stack
[++stk
] = dwarf2_parse_byte(ctx
); break;
715 case DW_OP_const1s
: stack
[++stk
] = dwarf2_parse_byte(ctx
); break;
716 case DW_OP_const2u
: stack
[++stk
] = dwarf2_parse_u2(ctx
); break;
717 case DW_OP_const2s
: stack
[++stk
] = dwarf2_parse_u2(ctx
); break;
718 case DW_OP_const4u
: stack
[++stk
] = dwarf2_parse_u4(ctx
); break;
719 case DW_OP_const4s
: stack
[++stk
] = dwarf2_parse_u4(ctx
); break;
720 case DW_OP_const8u
: stack
[++stk
] = dwarf2_parse_u8(ctx
); break;
721 case DW_OP_const8s
: stack
[++stk
] = dwarf2_parse_u8(ctx
); break;
722 case DW_OP_constu
: stack
[++stk
] = dwarf2_leb128_as_unsigned(ctx
); break;
723 case DW_OP_consts
: stack
[++stk
] = dwarf2_leb128_as_signed(ctx
); break;
724 case DW_OP_dup
: stack
[stk
+ 1] = stack
[stk
]; stk
++; break;
725 case DW_OP_drop
: stk
--; break;
726 case DW_OP_over
: stack
[stk
+ 1] = stack
[stk
- 1]; stk
++; break;
727 case DW_OP_pick
: stack
[stk
+ 1] = stack
[stk
- dwarf2_parse_byte(ctx
)]; stk
++; break;
728 case DW_OP_swap
: tmp
= stack
[stk
]; stack
[stk
] = stack
[stk
-1]; stack
[stk
-1] = tmp
; break;
729 case DW_OP_rot
: tmp
= stack
[stk
]; stack
[stk
] = stack
[stk
-1]; stack
[stk
-1] = stack
[stk
-2]; stack
[stk
-2] = tmp
; break;
730 case DW_OP_abs
: stack
[stk
] = labs(stack
[stk
]); break;
731 case DW_OP_neg
: stack
[stk
] = -stack
[stk
]; break;
732 case DW_OP_not
: stack
[stk
] = ~stack
[stk
]; break;
733 case DW_OP_and
: stack
[stk
-1] &= stack
[stk
]; stk
--; break;
734 case DW_OP_or
: stack
[stk
-1] |= stack
[stk
]; stk
--; break;
735 case DW_OP_minus
: stack
[stk
-1] -= stack
[stk
]; stk
--; break;
736 case DW_OP_mul
: stack
[stk
-1] *= stack
[stk
]; stk
--; break;
737 case DW_OP_plus
: stack
[stk
-1] += stack
[stk
]; stk
--; break;
738 case DW_OP_xor
: stack
[stk
-1] ^= stack
[stk
]; stk
--; break;
739 case DW_OP_shl
: stack
[stk
-1] <<= stack
[stk
]; stk
--; break;
740 case DW_OP_shr
: stack
[stk
-1] >>= stack
[stk
]; stk
--; break;
741 case DW_OP_plus_uconst
: stack
[stk
] += dwarf2_leb128_as_unsigned(ctx
); break;
742 case DW_OP_shra
: stack
[stk
-1] = stack
[stk
-1] / (1 << stack
[stk
]); stk
--; break;
743 case DW_OP_div
: stack
[stk
-1] = stack
[stk
-1] / stack
[stk
]; stk
--; break;
744 case DW_OP_mod
: stack
[stk
-1] = stack
[stk
-1] % stack
[stk
]; stk
--; break;
745 case DW_OP_ge
: stack
[stk
-1] = (stack
[stk
-1] >= stack
[stk
]); stk
--; break;
746 case DW_OP_gt
: stack
[stk
-1] = (stack
[stk
-1] > stack
[stk
]); stk
--; break;
747 case DW_OP_le
: stack
[stk
-1] = (stack
[stk
-1] <= stack
[stk
]); stk
--; break;
748 case DW_OP_lt
: stack
[stk
-1] = (stack
[stk
-1] < stack
[stk
]); stk
--; break;
749 case DW_OP_eq
: stack
[stk
-1] = (stack
[stk
-1] == stack
[stk
]); stk
--; break;
750 case DW_OP_ne
: stack
[stk
-1] = (stack
[stk
-1] != stack
[stk
]); stk
--; break;
751 case DW_OP_skip
: tmp
= dwarf2_parse_u2(ctx
); ctx
->data
+= tmp
; break;
752 case DW_OP_bra
: tmp
= dwarf2_parse_u2(ctx
); if (!stack
[stk
--]) ctx
->data
+= tmp
; break;
754 tmp
= dwarf2_leb128_as_unsigned(ctx
);
757 if (loc
->reg
!= Wine_DW_no_register
)
758 FIXME("Only supporting one reg\n");
759 loc
->reg
= dwarf2_map_register(tmp
);
761 loc
->kind
= loc_register
;
764 tmp
= dwarf2_leb128_as_unsigned(ctx
);
765 if (loc
->reg
!= Wine_DW_no_register
)
766 FIXME("Only supporting one regx\n");
767 loc
->reg
= dwarf2_map_register(tmp
);
768 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
769 loc
->kind
= loc_regrel
;
772 if (loc
->reg
!= Wine_DW_no_register
)
773 FIXME("Only supporting one reg (%s/%d -> -2)\n",
774 dbghelp_current_cpu
->fetch_regname(loc
->reg
), loc
->reg
);
775 if (frame
&& frame
->kind
== loc_register
)
777 loc
->kind
= loc_regrel
;
778 loc
->reg
= frame
->reg
;
779 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
781 else if (frame
&& frame
->kind
== loc_regrel
)
783 loc
->kind
= loc_regrel
;
784 loc
->reg
= frame
->reg
;
785 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
) + frame
->offset
;
789 /* FIXME: this could be later optimized by not recomputing
790 * this very location expression
792 loc
->kind
= loc_dwarf2_block
;
793 stack
[++stk
] = dwarf2_leb128_as_signed(ctx
);
798 unsigned sz
= dwarf2_leb128_as_unsigned(ctx
);
799 WARN("Not handling OP_piece (size=%d)\n", sz
);
806 FIXME("Unexpected empty stack\n");
807 return loc_err_internal
;
809 if (loc
->reg
!= Wine_DW_no_register
)
811 WARN("Too complex expression for deref\n");
812 return loc_err_too_complex
;
816 DWORD_PTR addr
= stack
[stk
--];
819 if (!ReadProcessMemory(hproc
, (void*)addr
, &deref
, sizeof(deref
), NULL
))
821 WARN("Couldn't read memory at %lx\n", addr
);
822 return loc_err_cant_read
;
824 stack
[++stk
] = deref
;
828 loc
->kind
= loc_dwarf2_block
;
831 case DW_OP_deref_size
:
834 FIXME("Unexpected empty stack\n");
835 return loc_err_internal
;
837 if (loc
->reg
!= Wine_DW_no_register
)
839 WARN("Too complex expression for deref\n");
840 return loc_err_too_complex
;
844 DWORD_PTR addr
= stack
[stk
--];
845 BYTE derefsize
= dwarf2_parse_byte(ctx
);
848 if (!ReadProcessMemory(hproc
, (void*)addr
, &deref
, derefsize
, NULL
))
850 WARN("Couldn't read memory at %lx\n", addr
);
851 return loc_err_cant_read
;
856 case 1: stack
[++stk
] = *(unsigned char*)&deref
; break;
857 case 2: stack
[++stk
] = *(unsigned short*)&deref
; break;
858 case 4: stack
[++stk
] = *(DWORD
*)&deref
; break;
859 case 8: if (ctx
->word_size
>= derefsize
) stack
[++stk
] = deref
; break;
864 dwarf2_parse_byte(ctx
);
865 loc
->kind
= loc_dwarf2_block
;
868 case DW_OP_stack_value
:
869 /* Expected behaviour is that this is the last instruction of this
870 * expression and just the "top of stack" value should be put to loc->offset. */
873 if (op
< DW_OP_lo_user
) /* as DW_OP_hi_user is 0xFF, we don't need to test against it */
874 FIXME("Unhandled attr op: %x\n", op
);
875 /* FIXME else unhandled extension */
876 return loc_err_internal
;
879 loc
->offset
= stack
[stk
];
883 static BOOL
dwarf2_compute_location_attr(dwarf2_parse_context_t
* ctx
,
884 const dwarf2_debug_info_t
* di
,
886 struct location
* loc
,
887 const struct location
* frame
)
889 struct attribute xloc
;
891 if (!dwarf2_find_attribute(ctx
, di
, dw
, &xloc
)) return FALSE
;
895 case DW_FORM_data1
: case DW_FORM_data2
:
896 case DW_FORM_udata
: case DW_FORM_sdata
:
897 loc
->kind
= loc_absolute
;
899 loc
->offset
= xloc
.u
.uvalue
;
901 case DW_FORM_data4
: case DW_FORM_data8
:
902 loc
->kind
= loc_dwarf2_location_list
;
903 loc
->reg
= Wine_DW_no_register
;
904 loc
->offset
= xloc
.u
.uvalue
;
911 default: FIXME("Unsupported yet form %lx\n", xloc
.form
);
915 /* assume we have a block form */
917 if (xloc
.u
.block
.size
)
919 dwarf2_traverse_context_t lctx
;
920 enum location_error err
;
922 lctx
.data
= xloc
.u
.block
.ptr
;
923 lctx
.end_data
= xloc
.u
.block
.ptr
+ xloc
.u
.block
.size
;
924 lctx
.word_size
= ctx
->module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
;
926 err
= compute_location(&lctx
, loc
, NULL
, frame
);
929 loc
->kind
= loc_error
;
932 else if (loc
->kind
== loc_dwarf2_block
)
934 unsigned* ptr
= pool_alloc(&ctx
->module
->pool
,
935 sizeof(unsigned) + xloc
.u
.block
.size
);
936 *ptr
= xloc
.u
.block
.size
;
937 memcpy(ptr
+ 1, xloc
.u
.block
.ptr
, xloc
.u
.block
.size
);
938 loc
->offset
= (unsigned long)ptr
;
944 static struct symt
* dwarf2_lookup_type(dwarf2_parse_context_t
* ctx
,
945 const dwarf2_debug_info_t
* di
)
947 struct attribute attr
;
948 dwarf2_debug_info_t
* type
;
950 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_type
, &attr
))
952 if (!(type
= sparse_array_find(&ctx
->debug_info_table
, attr
.u
.uvalue
)))
954 FIXME("Unable to find back reference to type %lx\n", attr
.u
.uvalue
);
959 /* load the debug info entity */
960 dwarf2_load_one_entry(ctx
, type
);
962 FIXME("Unable to load forward reference for tag %lx\n", type
->abbrev
->tag
);
967 static const char* dwarf2_get_cpp_name(dwarf2_parse_context_t
* ctx
, dwarf2_debug_info_t
* di
, const char* name
)
970 struct attribute diname
;
971 struct attribute spec
;
973 if (di
->abbrev
->tag
== DW_TAG_compile_unit
) return name
;
975 ctx
->cpp_name
= pool_alloc(&ctx
->pool
, MAX_SYM_NAME
);
976 last
= ctx
->cpp_name
+ MAX_SYM_NAME
- strlen(name
) - 1;
979 /* if the di is a definition, but has also a (previous) declaration, then scope must
980 * be gotten from declaration not definition
982 if (dwarf2_find_attribute(ctx
, di
, DW_AT_specification
, &spec
) && spec
.gotten_from
== attr_direct
)
984 di
= sparse_array_find(&ctx
->debug_info_table
, spec
.u
.uvalue
);
987 FIXME("Should have found the debug info entry\n");
992 for (di
= di
->parent
; di
; di
= di
->parent
)
994 switch (di
->abbrev
->tag
)
996 case DW_TAG_namespace
:
997 case DW_TAG_structure_type
:
998 case DW_TAG_class_type
:
999 case DW_TAG_interface_type
:
1000 case DW_TAG_union_type
:
1001 if (dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &diname
))
1003 size_t len
= strlen(diname
.u
.string
);
1005 if (last
< ctx
->cpp_name
) return NULL
;
1006 memcpy(last
, diname
.u
.string
, len
);
1007 last
[len
] = last
[len
+ 1] = ':';
1017 /******************************************************************
1020 * read a range for a given debug_info (either using AT_range attribute, in which
1021 * case we don't return all the details, or using AT_low_pc & AT_high_pc attributes)
1022 * in all cases, range is relative to beginning of compilation unit
1024 static BOOL
dwarf2_read_range(dwarf2_parse_context_t
* ctx
, const dwarf2_debug_info_t
* di
,
1025 unsigned long* plow
, unsigned long* phigh
)
1027 struct attribute range
;
1029 if (dwarf2_find_attribute(ctx
, di
, DW_AT_ranges
, &range
))
1031 dwarf2_traverse_context_t traverse
;
1032 unsigned long low
, high
;
1034 traverse
.data
= ctx
->sections
[section_ranges
].address
+ range
.u
.uvalue
;
1035 traverse
.end_data
= ctx
->sections
[section_ranges
].address
+
1036 ctx
->sections
[section_ranges
].size
;
1037 traverse
.word_size
= ctx
->module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
;
1041 while (traverse
.data
+ 2 * traverse
.word_size
< traverse
.end_data
)
1043 low
= dwarf2_parse_addr(&traverse
);
1044 high
= dwarf2_parse_addr(&traverse
);
1045 if (low
== 0 && high
== 0) break;
1046 if (low
== ULONG_MAX
) FIXME("unsupported yet (base address selection)\n");
1047 if (low
< *plow
) *plow
= low
;
1048 if (high
> *phigh
) *phigh
= high
;
1050 if (*plow
== ULONG_MAX
|| *phigh
== 0) {FIXME("no entry found\n"); return FALSE
;}
1051 if (*plow
== *phigh
) {FIXME("entry found, but low=high\n"); return FALSE
;}
1057 struct attribute low_pc
;
1058 struct attribute high_pc
;
1060 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_low_pc
, &low_pc
) ||
1061 !dwarf2_find_attribute(ctx
, di
, DW_AT_high_pc
, &high_pc
))
1063 *plow
= low_pc
.u
.uvalue
;
1064 *phigh
= high_pc
.u
.uvalue
;
1069 /******************************************************************
1070 * dwarf2_read_one_debug_info
1072 * Loads into memory one debug info entry, and recursively its children (if any)
1074 static BOOL
dwarf2_read_one_debug_info(dwarf2_parse_context_t
* ctx
,
1075 dwarf2_traverse_context_t
* traverse
,
1076 dwarf2_debug_info_t
* parent_di
,
1077 dwarf2_debug_info_t
** pdi
)
1079 const dwarf2_abbrev_entry_t
*abbrev
;
1080 unsigned long entry_code
;
1081 unsigned long offset
;
1082 dwarf2_debug_info_t
* di
;
1083 dwarf2_debug_info_t
* child
;
1084 dwarf2_debug_info_t
** where
;
1085 dwarf2_abbrev_entry_attr_t
* attr
;
1087 struct attribute sibling
;
1089 offset
= traverse
->data
- ctx
->sections
[ctx
->section
].address
;
1090 entry_code
= dwarf2_leb128_as_unsigned(traverse
);
1091 TRACE("found entry_code %lu at 0x%lx\n", entry_code
, offset
);
1097 abbrev
= dwarf2_abbrev_table_find_entry(&ctx
->abbrev_table
, entry_code
);
1100 WARN("Cannot find abbrev entry for %lu at 0x%lx\n", entry_code
, offset
);
1103 di
= sparse_array_add(&ctx
->debug_info_table
, offset
, &ctx
->pool
);
1104 if (!di
) return FALSE
;
1105 di
->abbrev
= abbrev
;
1107 di
->parent
= parent_di
;
1109 if (abbrev
->num_attr
)
1111 di
->data
= pool_alloc(&ctx
->pool
, abbrev
->num_attr
* sizeof(const char*));
1112 for (i
= 0, attr
= abbrev
->attrs
; attr
; i
++, attr
= attr
->next
)
1114 di
->data
[i
] = traverse
->data
;
1115 dwarf2_swallow_attribute(traverse
, attr
);
1118 else di
->data
= NULL
;
1119 if (abbrev
->have_child
)
1121 vector_init(&di
->children
, sizeof(dwarf2_debug_info_t
*), 16);
1122 while (traverse
->data
< traverse
->end_data
)
1124 if (!dwarf2_read_one_debug_info(ctx
, traverse
, di
, &child
)) return FALSE
;
1126 where
= vector_add(&di
->children
, &ctx
->pool
);
1127 if (!where
) return FALSE
;
1131 if (dwarf2_find_attribute(ctx
, di
, DW_AT_sibling
, &sibling
) &&
1132 traverse
->data
!= ctx
->sections
[ctx
->section
].address
+ sibling
.u
.uvalue
)
1134 WARN("setting cursor for %s to next sibling <0x%lx>\n",
1135 dwarf2_debug_traverse_ctx(traverse
), sibling
.u
.uvalue
);
1136 traverse
->data
= ctx
->sections
[ctx
->section
].address
+ sibling
.u
.uvalue
;
1142 static struct vector
* dwarf2_get_di_children(dwarf2_parse_context_t
* ctx
,
1143 dwarf2_debug_info_t
* di
)
1145 struct attribute spec
;
1149 if (di
->abbrev
->have_child
)
1150 return &di
->children
;
1151 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_specification
, &spec
)) break;
1152 if (!(di
= sparse_array_find(&ctx
->debug_info_table
, spec
.u
.uvalue
)))
1153 FIXME("Should have found the debug info entry\n");
1158 static struct symt
* dwarf2_parse_base_type(dwarf2_parse_context_t
* ctx
,
1159 dwarf2_debug_info_t
* di
)
1161 struct attribute name
;
1162 struct attribute size
;
1163 struct attribute encoding
;
1166 if (di
->symt
) return di
->symt
;
1168 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1170 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
))
1171 name
.u
.string
= NULL
;
1172 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= 0;
1173 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_encoding
, &encoding
)) encoding
.u
.uvalue
= DW_ATE_void
;
1175 switch (encoding
.u
.uvalue
)
1177 case DW_ATE_void
: bt
= btVoid
; break;
1178 case DW_ATE_address
: bt
= btULong
; break;
1179 case DW_ATE_boolean
: bt
= btBool
; break;
1180 case DW_ATE_complex_float
: bt
= btComplex
; break;
1181 case DW_ATE_float
: bt
= btFloat
; break;
1182 case DW_ATE_signed
: bt
= btInt
; break;
1183 case DW_ATE_unsigned
: bt
= btUInt
; break;
1184 case DW_ATE_signed_char
: bt
= btChar
; break;
1185 case DW_ATE_unsigned_char
: bt
= btChar
; break;
1186 default: bt
= btNoType
; break;
1188 di
->symt
= &symt_new_basic(ctx
->module
, bt
, name
.u
.string
, size
.u
.uvalue
)->symt
;
1192 assert(size
.u
.uvalue
== 0);
1193 cache_idx
= sc_void
;
1196 switch (size
.u
.uvalue
)
1198 case 1: cache_idx
= sc_int1
; break;
1199 case 2: cache_idx
= sc_int2
; break;
1200 case 4: cache_idx
= sc_int4
; break;
1205 if (cache_idx
!= -1 && !ctx
->symt_cache
[cache_idx
])
1206 ctx
->symt_cache
[cache_idx
] = di
->symt
;
1208 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1212 static struct symt
* dwarf2_parse_typedef(dwarf2_parse_context_t
* ctx
,
1213 dwarf2_debug_info_t
* di
)
1215 struct symt
* ref_type
;
1216 struct attribute name
;
1218 if (di
->symt
) return di
->symt
;
1220 TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx
), di
->abbrev
->entry_code
);
1222 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
)) name
.u
.string
= NULL
;
1223 ref_type
= dwarf2_lookup_type(ctx
, di
);
1226 di
->symt
= &symt_new_typedef(ctx
->module
, ref_type
, name
.u
.string
)->symt
;
1227 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1231 static struct symt
* dwarf2_parse_pointer_type(dwarf2_parse_context_t
* ctx
,
1232 dwarf2_debug_info_t
* di
)
1234 struct symt
* ref_type
;
1235 struct attribute size
;
1237 if (di
->symt
) return di
->symt
;
1239 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1241 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= sizeof(void *);
1242 if (!(ref_type
= dwarf2_lookup_type(ctx
, di
)))
1244 ref_type
= ctx
->symt_cache
[sc_void
];
1247 di
->symt
= &symt_new_pointer(ctx
->module
, ref_type
, size
.u
.uvalue
)->symt
;
1248 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1252 static struct symt
* dwarf2_parse_array_type(dwarf2_parse_context_t
* ctx
,
1253 dwarf2_debug_info_t
* di
)
1255 struct symt
* ref_type
;
1256 struct symt
* idx_type
= NULL
;
1257 struct attribute min
, max
, cnt
;
1258 dwarf2_debug_info_t
* child
;
1260 const struct vector
* children
;
1262 if (di
->symt
) return di
->symt
;
1264 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1266 ref_type
= dwarf2_lookup_type(ctx
, di
);
1268 if (!(children
= dwarf2_get_di_children(ctx
, di
)))
1270 /* fake an array with unknown size */
1271 /* FIXME: int4 even on 64bit machines??? */
1272 idx_type
= ctx
->symt_cache
[sc_int4
];
1276 else for (i
= 0; i
< vector_length(children
); i
++)
1278 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1279 switch (child
->abbrev
->tag
)
1281 case DW_TAG_subrange_type
:
1282 idx_type
= dwarf2_lookup_type(ctx
, child
);
1283 if (!dwarf2_find_attribute(ctx
, child
, DW_AT_lower_bound
, &min
))
1285 if (!dwarf2_find_attribute(ctx
, child
, DW_AT_upper_bound
, &max
))
1287 if (dwarf2_find_attribute(ctx
, child
, DW_AT_count
, &cnt
))
1288 max
.u
.uvalue
= min
.u
.uvalue
+ cnt
.u
.uvalue
;
1291 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1292 child
->abbrev
->tag
, dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1296 di
->symt
= &symt_new_array(ctx
->module
, min
.u
.uvalue
, max
.u
.uvalue
, ref_type
, idx_type
)->symt
;
1300 static struct symt
* dwarf2_parse_const_type(dwarf2_parse_context_t
* ctx
,
1301 dwarf2_debug_info_t
* di
)
1303 struct symt
* ref_type
;
1305 if (di
->symt
) return di
->symt
;
1307 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1309 if (!(ref_type
= dwarf2_lookup_type(ctx
, di
)))
1311 ref_type
= ctx
->symt_cache
[sc_void
];
1314 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1315 di
->symt
= ref_type
;
1320 static struct symt
* dwarf2_parse_volatile_type(dwarf2_parse_context_t
* ctx
,
1321 dwarf2_debug_info_t
* di
)
1323 struct symt
* ref_type
;
1325 if (di
->symt
) return di
->symt
;
1327 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1329 if (!(ref_type
= dwarf2_lookup_type(ctx
, di
)))
1331 ref_type
= ctx
->symt_cache
[sc_void
];
1334 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1335 di
->symt
= ref_type
;
1340 static struct symt
* dwarf2_parse_reference_type(dwarf2_parse_context_t
* ctx
,
1341 dwarf2_debug_info_t
* di
)
1343 struct symt
* ref_type
= NULL
;
1345 if (di
->symt
) return di
->symt
;
1347 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1349 ref_type
= dwarf2_lookup_type(ctx
, di
);
1350 /* FIXME: for now, we hard-wire C++ references to pointers */
1351 di
->symt
= &symt_new_pointer(ctx
->module
, ref_type
, sizeof(void *))->symt
;
1353 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1358 static void dwarf2_parse_udt_member(dwarf2_parse_context_t
* ctx
,
1359 dwarf2_debug_info_t
* di
,
1360 struct symt_udt
* parent
)
1362 struct symt
* elt_type
;
1363 struct attribute name
;
1364 struct attribute bit_size
;
1365 struct attribute bit_offset
;
1366 struct location loc
;
1370 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1372 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
)) name
.u
.string
= NULL
;
1373 elt_type
= dwarf2_lookup_type(ctx
, di
);
1374 if (dwarf2_compute_location_attr(ctx
, di
, DW_AT_data_member_location
, &loc
, NULL
))
1376 if (loc
.kind
!= loc_absolute
)
1378 FIXME("Found register, while not expecting it\n");
1382 TRACE("found member_location at %s -> %lu\n",
1383 dwarf2_debug_ctx(ctx
), loc
.offset
);
1387 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_bit_size
, &bit_size
))
1388 bit_size
.u
.uvalue
= 0;
1389 if (dwarf2_find_attribute(ctx
, di
, DW_AT_bit_offset
, &bit_offset
))
1391 /* FIXME: we should only do this when implementation is LSB (which is
1392 * the case on i386 processors)
1394 struct attribute nbytes
;
1395 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_byte_size
, &nbytes
))
1398 nbytes
.u
.uvalue
= symt_get_info(ctx
->module
, elt_type
, TI_GET_LENGTH
, &size
) ?
1399 (unsigned long)size
: 0;
1401 bit_offset
.u
.uvalue
= nbytes
.u
.uvalue
* 8 - bit_offset
.u
.uvalue
- bit_size
.u
.uvalue
;
1403 else bit_offset
.u
.uvalue
= 0;
1404 symt_add_udt_element(ctx
->module
, parent
, name
.u
.string
, elt_type
,
1405 (loc
.offset
<< 3) + bit_offset
.u
.uvalue
,
1408 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1411 static struct symt
* dwarf2_parse_subprogram(dwarf2_parse_context_t
* ctx
,
1412 dwarf2_debug_info_t
* di
);
1414 static struct symt
* dwarf2_parse_udt_type(dwarf2_parse_context_t
* ctx
,
1415 dwarf2_debug_info_t
* di
,
1418 struct attribute name
;
1419 struct attribute size
;
1420 struct vector
* children
;
1421 dwarf2_debug_info_t
*child
;
1424 if (di
->symt
) return di
->symt
;
1426 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1428 /* quirk... FIXME provide real support for anonymous UDTs */
1429 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
))
1430 name
.u
.string
= "zz_anon_zz";
1431 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= 0;
1433 di
->symt
= &symt_new_udt(ctx
->module
, dwarf2_get_cpp_name(ctx
, di
, name
.u
.string
),
1434 size
.u
.uvalue
, udt
)->symt
;
1436 children
= dwarf2_get_di_children(ctx
, di
);
1437 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1439 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1441 switch (child
->abbrev
->tag
)
1443 case DW_TAG_array_type
:
1444 dwarf2_parse_array_type(ctx
, di
);
1447 /* FIXME: should I follow the sibling stuff ?? */
1448 dwarf2_parse_udt_member(ctx
, child
, (struct symt_udt
*)di
->symt
);
1450 case DW_TAG_enumeration_type
:
1451 dwarf2_parse_enumeration_type(ctx
, child
);
1453 case DW_TAG_subprogram
:
1454 dwarf2_parse_subprogram(ctx
, child
);
1456 case DW_TAG_const_type
:
1457 dwarf2_parse_const_type(ctx
, child
);
1459 case DW_TAG_structure_type
:
1460 case DW_TAG_class_type
:
1461 case DW_TAG_union_type
:
1462 case DW_TAG_typedef
:
1463 /* FIXME: we need to handle nested udt definitions */
1464 case DW_TAG_inheritance
:
1465 case DW_TAG_template_type_param
:
1466 case DW_TAG_template_value_param
:
1467 case DW_TAG_variable
:
1468 case DW_TAG_imported_declaration
:
1469 case DW_TAG_ptr_to_member_type
:
1470 /* FIXME: some C++ related stuff */
1473 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1474 child
->abbrev
->tag
, dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1482 static void dwarf2_parse_enumerator(dwarf2_parse_context_t
* ctx
,
1483 dwarf2_debug_info_t
* di
,
1484 struct symt_enum
* parent
)
1486 struct attribute name
;
1487 struct attribute value
;
1489 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1491 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
)) return;
1492 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_const_value
, &value
)) value
.u
.svalue
= 0;
1493 symt_add_enum_element(ctx
->module
, parent
, name
.u
.string
, value
.u
.svalue
);
1495 if (dwarf2_get_di_children(ctx
, di
)) FIXME("Unsupported children\n");
1498 static struct symt
* dwarf2_parse_enumeration_type(dwarf2_parse_context_t
* ctx
,
1499 dwarf2_debug_info_t
* di
)
1501 struct attribute name
;
1502 struct attribute size
;
1503 struct symt_basic
* basetype
;
1504 struct vector
* children
;
1505 dwarf2_debug_info_t
*child
;
1508 if (di
->symt
) return di
->symt
;
1510 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1512 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
)) name
.u
.string
= NULL
;
1513 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_byte_size
, &size
)) size
.u
.uvalue
= 4;
1515 switch (size
.u
.uvalue
) /* FIXME: that's wrong */
1517 case 1: basetype
= symt_new_basic(ctx
->module
, btInt
, "char", 1); break;
1518 case 2: basetype
= symt_new_basic(ctx
->module
, btInt
, "short", 2); break;
1520 case 4: basetype
= symt_new_basic(ctx
->module
, btInt
, "int", 4); break;
1523 di
->symt
= &symt_new_enum(ctx
->module
, name
.u
.string
, &basetype
->symt
)->symt
;
1525 children
= dwarf2_get_di_children(ctx
, di
);
1526 /* FIXME: should we use the sibling stuff ?? */
1527 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1529 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1531 switch (child
->abbrev
->tag
)
1533 case DW_TAG_enumerator
:
1534 dwarf2_parse_enumerator(ctx
, child
, (struct symt_enum
*)di
->symt
);
1537 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1538 di
->abbrev
->tag
, dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1544 /* structure used to pass information around when parsing a subprogram */
1545 typedef struct dwarf2_subprogram_s
1547 dwarf2_parse_context_t
* ctx
;
1548 struct symt_function
* func
;
1549 BOOL non_computed_variable
;
1550 struct location frame
;
1551 } dwarf2_subprogram_t
;
1553 /******************************************************************
1554 * dwarf2_parse_variable
1556 * Parses any variable (parameter, local/global variable)
1558 static void dwarf2_parse_variable(dwarf2_subprogram_t
* subpgm
,
1559 struct symt_block
* block
,
1560 dwarf2_debug_info_t
* di
)
1562 struct symt
* param_type
;
1563 struct attribute name
, value
;
1564 struct location loc
;
1567 TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm
->ctx
), dwarf2_debug_di(di
));
1569 is_pmt
= !block
&& di
->abbrev
->tag
== DW_TAG_formal_parameter
;
1570 param_type
= dwarf2_lookup_type(subpgm
->ctx
, di
);
1572 if (!dwarf2_find_attribute(subpgm
->ctx
, di
, DW_AT_name
, &name
)) {
1573 /* cannot do much without the name, the functions below won't like it. */
1576 if (dwarf2_compute_location_attr(subpgm
->ctx
, di
, DW_AT_location
,
1577 &loc
, &subpgm
->frame
))
1579 struct attribute ext
;
1581 TRACE("found parameter %s (kind=%d, offset=%ld, reg=%d) at %s\n",
1582 name
.u
.string
, loc
.kind
, loc
.offset
, loc
.reg
,
1583 dwarf2_debug_ctx(subpgm
->ctx
));
1590 /* it's a global variable */
1591 /* FIXME: we don't handle its scope yet */
1592 if (!dwarf2_find_attribute(subpgm
->ctx
, di
, DW_AT_external
, &ext
))
1594 loc
.offset
+= subpgm
->ctx
->load_offset
;
1595 symt_new_global_variable(subpgm
->ctx
->module
, subpgm
->ctx
->compiland
,
1596 dwarf2_get_cpp_name(subpgm
->ctx
, di
, name
.u
.string
), !ext
.u
.uvalue
,
1597 loc
, 0, param_type
);
1600 subpgm
->non_computed_variable
= TRUE
;
1604 /* either a pmt/variable relative to frame pointer or
1605 * pmt/variable in a register
1607 assert(subpgm
->func
);
1608 symt_add_func_local(subpgm
->ctx
->module
, subpgm
->func
,
1609 is_pmt
? DataIsParam
: DataIsLocal
,
1610 &loc
, block
, param_type
, name
.u
.string
);
1614 else if (dwarf2_find_attribute(subpgm
->ctx
, di
, DW_AT_const_value
, &value
))
1617 if (subpgm
->func
) WARN("Unsupported constant %s in function\n", name
.u
.string
);
1618 if (is_pmt
) FIXME("Unsupported constant (parameter) %s in function\n", name
.u
.string
);
1626 v
.n1
.n2
.vt
= VT_UI4
;
1627 v
.n1
.n2
.n3
.lVal
= value
.u
.uvalue
;
1631 v
.n1
.n2
.vt
= VT_UI8
;
1632 v
.n1
.n2
.n3
.llVal
= value
.u
.lluvalue
;
1637 v
.n1
.n2
.n3
.lVal
= value
.u
.svalue
;
1641 case DW_FORM_string
:
1642 /* FIXME: native doesn't report const strings from here !!
1643 * however, the value of the string is in the code somewhere
1645 v
.n1
.n2
.vt
= VT_I1
| VT_BYREF
;
1646 v
.n1
.n2
.n3
.byref
= pool_strdup(&subpgm
->ctx
->module
->pool
, value
.u
.string
);
1650 case DW_FORM_block1
:
1651 case DW_FORM_block2
:
1652 case DW_FORM_block4
:
1654 switch (value
.u
.block
.size
)
1656 case 1: v
.n1
.n2
.n3
.lVal
= *(BYTE
*)value
.u
.block
.ptr
; break;
1657 case 2: v
.n1
.n2
.n3
.lVal
= *(USHORT
*)value
.u
.block
.ptr
; break;
1658 case 4: v
.n1
.n2
.n3
.lVal
= *(DWORD
*)value
.u
.block
.ptr
; break;
1660 v
.n1
.n2
.vt
= VT_I1
| VT_BYREF
;
1661 v
.n1
.n2
.n3
.byref
= pool_alloc(&subpgm
->ctx
->module
->pool
, value
.u
.block
.size
);
1662 memcpy(v
.n1
.n2
.n3
.byref
, value
.u
.block
.ptr
, value
.u
.block
.size
);
1667 FIXME("Unsupported form for const value %s (%lx)\n",
1668 name
.u
.string
, value
.form
);
1669 v
.n1
.n2
.vt
= VT_EMPTY
;
1671 di
->symt
= &symt_new_constant(subpgm
->ctx
->module
, subpgm
->ctx
->compiland
,
1672 name
.u
.string
, param_type
, &v
)->symt
;
1676 /* variable has been optimized away... report anyway */
1677 loc
.kind
= loc_error
;
1678 loc
.reg
= loc_err_no_location
;
1681 symt_add_func_local(subpgm
->ctx
->module
, subpgm
->func
,
1682 is_pmt
? DataIsParam
: DataIsLocal
,
1683 &loc
, block
, param_type
, name
.u
.string
);
1687 WARN("dropping global variable %s which has been optimized away\n", name
.u
.string
);
1690 if (is_pmt
&& subpgm
->func
&& subpgm
->func
->type
)
1691 symt_add_function_signature_parameter(subpgm
->ctx
->module
,
1692 (struct symt_function_signature
*)subpgm
->func
->type
,
1695 if (dwarf2_get_di_children(subpgm
->ctx
, di
)) FIXME("Unsupported children\n");
1698 static void dwarf2_parse_subprogram_label(dwarf2_subprogram_t
* subpgm
,
1699 const dwarf2_debug_info_t
* di
)
1701 struct attribute name
;
1702 struct attribute low_pc
;
1703 struct location loc
;
1705 TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm
->ctx
), dwarf2_debug_di(di
));
1707 if (!dwarf2_find_attribute(subpgm
->ctx
, di
, DW_AT_low_pc
, &low_pc
)) low_pc
.u
.uvalue
= 0;
1708 if (!dwarf2_find_attribute(subpgm
->ctx
, di
, DW_AT_name
, &name
))
1709 name
.u
.string
= NULL
;
1711 loc
.kind
= loc_absolute
;
1712 loc
.offset
= subpgm
->ctx
->load_offset
+ low_pc
.u
.uvalue
;
1713 symt_add_function_point(subpgm
->ctx
->module
, subpgm
->func
, SymTagLabel
,
1714 &loc
, name
.u
.string
);
1717 static void dwarf2_parse_subprogram_block(dwarf2_subprogram_t
* subpgm
,
1718 struct symt_block
* parent_block
,
1719 dwarf2_debug_info_t
* di
);
1721 static struct symt
* dwarf2_parse_subroutine_type(dwarf2_parse_context_t
* ctx
,
1722 dwarf2_debug_info_t
* di
);
1724 static void dwarf2_parse_inlined_subroutine(dwarf2_subprogram_t
* subpgm
,
1725 struct symt_block
* parent_block
,
1726 dwarf2_debug_info_t
* di
)
1728 struct symt_block
* block
;
1729 unsigned long low_pc
, high_pc
;
1730 struct vector
* children
;
1731 dwarf2_debug_info_t
*child
;
1734 TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm
->ctx
), dwarf2_debug_di(di
));
1736 if (!dwarf2_read_range(subpgm
->ctx
, di
, &low_pc
, &high_pc
))
1738 FIXME("cannot read range\n");
1742 block
= symt_open_func_block(subpgm
->ctx
->module
, subpgm
->func
, parent_block
,
1743 subpgm
->ctx
->load_offset
+ low_pc
- subpgm
->func
->address
,
1746 children
= dwarf2_get_di_children(subpgm
->ctx
, di
);
1747 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1749 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1751 switch (child
->abbrev
->tag
)
1753 case DW_TAG_formal_parameter
:
1754 case DW_TAG_variable
:
1755 dwarf2_parse_variable(subpgm
, block
, child
);
1757 case DW_TAG_lexical_block
:
1758 dwarf2_parse_subprogram_block(subpgm
, block
, child
);
1760 case DW_TAG_inlined_subroutine
:
1761 dwarf2_parse_inlined_subroutine(subpgm
, block
, child
);
1764 dwarf2_parse_subprogram_label(subpgm
, child
);
1766 case DW_TAG_GNU_call_site
:
1767 /* this isn't properly supported by dbghelp interface. skip it for now */
1770 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1771 child
->abbrev
->tag
, dwarf2_debug_ctx(subpgm
->ctx
),
1772 dwarf2_debug_di(di
));
1775 symt_close_func_block(subpgm
->ctx
->module
, subpgm
->func
, block
, 0);
1778 static void dwarf2_parse_subprogram_block(dwarf2_subprogram_t
* subpgm
,
1779 struct symt_block
* parent_block
,
1780 dwarf2_debug_info_t
* di
)
1782 struct symt_block
* block
;
1783 unsigned long low_pc
, high_pc
;
1784 struct vector
* children
;
1785 dwarf2_debug_info_t
*child
;
1788 TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm
->ctx
), dwarf2_debug_di(di
));
1790 if (!dwarf2_read_range(subpgm
->ctx
, di
, &low_pc
, &high_pc
))
1792 FIXME("no range\n");
1796 block
= symt_open_func_block(subpgm
->ctx
->module
, subpgm
->func
, parent_block
,
1797 subpgm
->ctx
->load_offset
+ low_pc
- subpgm
->func
->address
,
1800 children
= dwarf2_get_di_children(subpgm
->ctx
, di
);
1801 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1803 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1805 switch (child
->abbrev
->tag
)
1807 case DW_TAG_inlined_subroutine
:
1808 dwarf2_parse_inlined_subroutine(subpgm
, block
, child
);
1810 case DW_TAG_variable
:
1811 dwarf2_parse_variable(subpgm
, block
, child
);
1813 case DW_TAG_pointer_type
:
1814 dwarf2_parse_pointer_type(subpgm
->ctx
, di
);
1816 case DW_TAG_subroutine_type
:
1817 dwarf2_parse_subroutine_type(subpgm
->ctx
, di
);
1819 case DW_TAG_lexical_block
:
1820 dwarf2_parse_subprogram_block(subpgm
, block
, child
);
1822 case DW_TAG_subprogram
:
1823 /* FIXME: likely a declaration (to be checked)
1827 case DW_TAG_formal_parameter
:
1828 /* FIXME: likely elements for exception handling (GCC flavor)
1832 case DW_TAG_imported_module
:
1833 /* C++ stuff to be silenced (for now) */
1835 case DW_TAG_GNU_call_site
:
1836 /* this isn't properly supported by dbghelp interface. skip it for now */
1839 dwarf2_parse_subprogram_label(subpgm
, child
);
1841 case DW_TAG_class_type
:
1842 case DW_TAG_structure_type
:
1843 case DW_TAG_union_type
:
1844 case DW_TAG_enumeration_type
:
1845 case DW_TAG_typedef
:
1846 /* the type referred to will be loaded when we need it, so skip it */
1849 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1850 child
->abbrev
->tag
, dwarf2_debug_ctx(subpgm
->ctx
), dwarf2_debug_di(di
));
1854 symt_close_func_block(subpgm
->ctx
->module
, subpgm
->func
, block
, 0);
1857 static struct symt
* dwarf2_parse_subprogram(dwarf2_parse_context_t
* ctx
,
1858 dwarf2_debug_info_t
* di
)
1860 struct attribute name
;
1861 unsigned long low_pc
, high_pc
;
1862 struct attribute is_decl
;
1863 struct attribute inline_flags
;
1864 struct symt
* ret_type
;
1865 struct symt_function_signature
* sig_type
;
1866 dwarf2_subprogram_t subpgm
;
1867 struct vector
* children
;
1868 dwarf2_debug_info_t
* child
;
1871 if (di
->symt
) return di
->symt
;
1873 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1875 if (!dwarf2_find_attribute(ctx
, di
, DW_AT_name
, &name
))
1877 WARN("No name for function... dropping function\n");
1880 /* if it's an abstract representation of an inline function, there should be
1881 * a concrete object that we'll handle
1883 if (dwarf2_find_attribute(ctx
, di
, DW_AT_inline
, &inline_flags
) &&
1884 inline_flags
.u
.uvalue
!= DW_INL_not_inlined
)
1886 TRACE("Function %s declared as inlined (%ld)... skipping\n",
1887 name
.u
.string
? name
.u
.string
: "(null)", inline_flags
.u
.uvalue
);
1891 if (dwarf2_find_attribute(ctx
, di
, DW_AT_declaration
, &is_decl
) &&
1892 is_decl
.u
.uvalue
&& is_decl
.gotten_from
== attr_direct
)
1894 /* it's a real declaration, skip it */
1897 if (!dwarf2_read_range(ctx
, di
, &low_pc
, &high_pc
))
1899 WARN("cannot get range for %s\n", name
.u
.string
);
1902 /* As functions (defined as inline assembly) get debug info with dwarf
1903 * (not the case for stabs), we just drop Wine's thunks here...
1904 * Actual thunks will be created in elf_module from the symbol table
1906 if (elf_is_in_thunk_area(ctx
->load_offset
+ low_pc
, ctx
->thunks
) >= 0)
1908 if (!(ret_type
= dwarf2_lookup_type(ctx
, di
)))
1910 ret_type
= ctx
->symt_cache
[sc_void
];
1913 /* FIXME: assuming C source code */
1914 sig_type
= symt_new_function_signature(ctx
->module
, ret_type
, CV_CALL_FAR_C
);
1915 subpgm
.func
= symt_new_function(ctx
->module
, ctx
->compiland
,
1916 dwarf2_get_cpp_name(ctx
, di
, name
.u
.string
),
1917 ctx
->load_offset
+ low_pc
, high_pc
- low_pc
,
1919 di
->symt
= &subpgm
.func
->symt
;
1921 if (!dwarf2_compute_location_attr(ctx
, di
, DW_AT_frame_base
,
1922 &subpgm
.frame
, NULL
))
1925 subpgm
.frame
.kind
= loc_regrel
;
1926 subpgm
.frame
.reg
= dbghelp_current_cpu
->frame_regno
;
1927 subpgm
.frame
.offset
= 0;
1929 subpgm
.non_computed_variable
= FALSE
;
1931 children
= dwarf2_get_di_children(ctx
, di
);
1932 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
1934 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
1936 switch (child
->abbrev
->tag
)
1938 case DW_TAG_variable
:
1939 case DW_TAG_formal_parameter
:
1940 dwarf2_parse_variable(&subpgm
, NULL
, child
);
1942 case DW_TAG_lexical_block
:
1943 dwarf2_parse_subprogram_block(&subpgm
, NULL
, child
);
1945 case DW_TAG_inlined_subroutine
:
1946 dwarf2_parse_inlined_subroutine(&subpgm
, NULL
, child
);
1948 case DW_TAG_pointer_type
:
1949 dwarf2_parse_pointer_type(subpgm
.ctx
, di
);
1951 case DW_TAG_subprogram
:
1952 /* FIXME: likely a declaration (to be checked)
1957 dwarf2_parse_subprogram_label(&subpgm
, child
);
1959 case DW_TAG_class_type
:
1960 case DW_TAG_structure_type
:
1961 case DW_TAG_union_type
:
1962 case DW_TAG_enumeration_type
:
1963 case DW_TAG_typedef
:
1964 /* the type referred to will be loaded when we need it, so skip it */
1966 case DW_TAG_unspecified_parameters
:
1967 case DW_TAG_template_type_param
:
1968 case DW_TAG_template_value_param
:
1969 case DW_TAG_GNU_call_site
:
1970 /* FIXME: no support in dbghelp's internals so far */
1973 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1974 child
->abbrev
->tag
, dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
1978 if (subpgm
.non_computed_variable
|| subpgm
.frame
.kind
>= loc_user
)
1980 symt_add_function_point(ctx
->module
, subpgm
.func
, SymTagCustom
,
1981 &subpgm
.frame
, NULL
);
1983 if (subpgm
.func
) symt_normalize_function(subpgm
.ctx
->module
, subpgm
.func
);
1988 static struct symt
* dwarf2_parse_subroutine_type(dwarf2_parse_context_t
* ctx
,
1989 dwarf2_debug_info_t
* di
)
1991 struct symt
* ret_type
;
1992 struct symt_function_signature
* sig_type
;
1993 struct vector
* children
;
1994 dwarf2_debug_info_t
* child
;
1997 if (di
->symt
) return di
->symt
;
1999 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
2001 if (!(ret_type
= dwarf2_lookup_type(ctx
, di
)))
2003 ret_type
= ctx
->symt_cache
[sc_void
];
2007 /* FIXME: assuming C source code */
2008 sig_type
= symt_new_function_signature(ctx
->module
, ret_type
, CV_CALL_FAR_C
);
2010 children
= dwarf2_get_di_children(ctx
, di
);
2011 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2013 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2015 switch (child
->abbrev
->tag
)
2017 case DW_TAG_formal_parameter
:
2018 symt_add_function_signature_parameter(ctx
->module
, sig_type
,
2019 dwarf2_lookup_type(ctx
, child
));
2021 case DW_TAG_unspecified_parameters
:
2022 WARN("Unsupported unspecified parameters\n");
2027 return di
->symt
= &sig_type
->symt
;
2030 static void dwarf2_parse_namespace(dwarf2_parse_context_t
* ctx
,
2031 dwarf2_debug_info_t
* di
)
2033 struct vector
* children
;
2034 dwarf2_debug_info_t
* child
;
2037 if (di
->symt
) return;
2039 TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx
), dwarf2_debug_di(di
));
2041 di
->symt
= ctx
->symt_cache
[sc_void
];
2043 children
= dwarf2_get_di_children(ctx
, di
);
2044 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2046 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2047 dwarf2_load_one_entry(ctx
, child
);
2051 static void dwarf2_load_one_entry(dwarf2_parse_context_t
* ctx
,
2052 dwarf2_debug_info_t
* di
)
2054 switch (di
->abbrev
->tag
)
2056 case DW_TAG_typedef
:
2057 dwarf2_parse_typedef(ctx
, di
);
2059 case DW_TAG_base_type
:
2060 dwarf2_parse_base_type(ctx
, di
);
2062 case DW_TAG_pointer_type
:
2063 dwarf2_parse_pointer_type(ctx
, di
);
2065 case DW_TAG_class_type
:
2066 dwarf2_parse_udt_type(ctx
, di
, UdtClass
);
2068 case DW_TAG_structure_type
:
2069 dwarf2_parse_udt_type(ctx
, di
, UdtStruct
);
2071 case DW_TAG_union_type
:
2072 dwarf2_parse_udt_type(ctx
, di
, UdtUnion
);
2074 case DW_TAG_array_type
:
2075 dwarf2_parse_array_type(ctx
, di
);
2077 case DW_TAG_const_type
:
2078 dwarf2_parse_const_type(ctx
, di
);
2080 case DW_TAG_volatile_type
:
2081 dwarf2_parse_volatile_type(ctx
, di
);
2083 case DW_TAG_reference_type
:
2084 dwarf2_parse_reference_type(ctx
, di
);
2086 case DW_TAG_enumeration_type
:
2087 dwarf2_parse_enumeration_type(ctx
, di
);
2089 case DW_TAG_subprogram
:
2090 dwarf2_parse_subprogram(ctx
, di
);
2092 case DW_TAG_subroutine_type
:
2093 dwarf2_parse_subroutine_type(ctx
, di
);
2095 case DW_TAG_variable
:
2097 dwarf2_subprogram_t subpgm
;
2101 subpgm
.frame
.kind
= loc_absolute
;
2102 subpgm
.frame
.offset
= 0;
2103 subpgm
.frame
.reg
= Wine_DW_no_register
;
2104 dwarf2_parse_variable(&subpgm
, NULL
, di
);
2107 case DW_TAG_namespace
:
2108 dwarf2_parse_namespace(ctx
, di
);
2110 /* silence a couple of C++ defines */
2111 case DW_TAG_imported_module
:
2112 case DW_TAG_imported_declaration
:
2113 case DW_TAG_ptr_to_member_type
:
2116 FIXME("Unhandled Tag type 0x%lx at %s, for %lu\n",
2117 di
->abbrev
->tag
, dwarf2_debug_ctx(ctx
), di
->abbrev
->entry_code
);
2121 static void dwarf2_set_line_number(struct module
* module
, unsigned long address
,
2122 const struct vector
* v
, unsigned file
, unsigned line
)
2124 struct symt_function
* func
;
2125 struct symt_ht
* symt
;
2128 if (!file
|| !(psrc
= vector_at(v
, file
- 1))) return;
2130 TRACE("%s %lx %s %u\n",
2131 debugstr_w(module
->module
.ModuleName
), address
, source_get(module
, *psrc
), line
);
2132 if (!(symt
= symt_find_nearest(module
, address
)) ||
2133 symt
->symt
.tag
!= SymTagFunction
) return;
2134 func
= (struct symt_function
*)symt
;
2135 symt_add_func_line(module
, func
, *psrc
, line
, address
- func
->address
);
2138 static BOOL
dwarf2_parse_line_numbers(const dwarf2_section_t
* sections
,
2139 dwarf2_parse_context_t
* ctx
,
2140 const char* compile_dir
,
2141 unsigned long offset
)
2143 dwarf2_traverse_context_t traverse
;
2144 unsigned long length
;
2145 unsigned insn_size
, default_stmt
;
2146 unsigned line_range
, opcode_base
;
2148 const unsigned char* opcode_len
;
2150 struct vector files
;
2153 /* section with line numbers stripped */
2154 if (sections
[section_line
].address
== IMAGE_NO_MAP
)
2157 if (offset
+ 4 > sections
[section_line
].size
)
2159 WARN("out of bounds offset\n");
2162 traverse
.data
= sections
[section_line
].address
+ offset
;
2163 traverse
.end_data
= traverse
.data
+ 4;
2164 traverse
.word_size
= ctx
->module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
;
2166 length
= dwarf2_parse_u4(&traverse
);
2167 traverse
.end_data
= sections
[section_line
].address
+ offset
+ length
;
2169 if (offset
+ 4 + length
> sections
[section_line
].size
)
2171 WARN("out of bounds header\n");
2174 dwarf2_parse_u2(&traverse
); /* version */
2175 dwarf2_parse_u4(&traverse
); /* header_len */
2176 insn_size
= dwarf2_parse_byte(&traverse
);
2177 default_stmt
= dwarf2_parse_byte(&traverse
);
2178 line_base
= (signed char)dwarf2_parse_byte(&traverse
);
2179 line_range
= dwarf2_parse_byte(&traverse
);
2180 opcode_base
= dwarf2_parse_byte(&traverse
);
2182 opcode_len
= traverse
.data
;
2183 traverse
.data
+= opcode_base
- 1;
2185 vector_init(&dirs
, sizeof(const char*), 4);
2186 p
= vector_add(&dirs
, &ctx
->pool
);
2187 *p
= compile_dir
? compile_dir
: ".";
2188 while (*traverse
.data
)
2190 const char* rel
= (const char*)traverse
.data
;
2191 unsigned rellen
= strlen(rel
);
2192 TRACE("Got include %s\n", rel
);
2193 traverse
.data
+= rellen
+ 1;
2194 p
= vector_add(&dirs
, &ctx
->pool
);
2196 if (*rel
== '/' || !compile_dir
)
2200 /* include directory relative to compile directory */
2201 unsigned baselen
= strlen(compile_dir
);
2202 char* tmp
= pool_alloc(&ctx
->pool
, baselen
+ 1 + rellen
+ 1);
2203 strcpy(tmp
, compile_dir
);
2204 if (tmp
[baselen
- 1] != '/') tmp
[baselen
++] = '/';
2205 strcpy(&tmp
[baselen
], rel
);
2212 vector_init(&files
, sizeof(unsigned), 16);
2213 while (*traverse
.data
)
2215 unsigned int dir_index
, mod_time
;
2220 name
= (const char*)traverse
.data
;
2221 traverse
.data
+= strlen(name
) + 1;
2222 dir_index
= dwarf2_leb128_as_unsigned(&traverse
);
2223 mod_time
= dwarf2_leb128_as_unsigned(&traverse
);
2224 length
= dwarf2_leb128_as_unsigned(&traverse
);
2225 dir
= *(const char**)vector_at(&dirs
, dir_index
);
2226 TRACE("Got file %s/%s (%u,%lu)\n", dir
, name
, mod_time
, length
);
2227 psrc
= vector_add(&files
, &ctx
->pool
);
2228 *psrc
= source_new(ctx
->module
, dir
, name
);
2232 while (traverse
.data
< traverse
.end_data
)
2234 unsigned long address
= 0;
2237 unsigned is_stmt
= default_stmt
;
2238 BOOL end_sequence
= FALSE
;
2239 unsigned opcode
, extopcode
, i
;
2241 while (!end_sequence
)
2243 opcode
= dwarf2_parse_byte(&traverse
);
2244 TRACE("Got opcode %x\n", opcode
);
2246 if (opcode
>= opcode_base
)
2248 unsigned delta
= opcode
- opcode_base
;
2250 address
+= (delta
/ line_range
) * insn_size
;
2251 line
+= line_base
+ (delta
% line_range
);
2252 dwarf2_set_line_number(ctx
->module
, address
, &files
, file
, line
);
2259 dwarf2_set_line_number(ctx
->module
, address
, &files
, file
, line
);
2261 case DW_LNS_advance_pc
:
2262 address
+= insn_size
* dwarf2_leb128_as_unsigned(&traverse
);
2264 case DW_LNS_advance_line
:
2265 line
+= dwarf2_leb128_as_signed(&traverse
);
2267 case DW_LNS_set_file
:
2268 file
= dwarf2_leb128_as_unsigned(&traverse
);
2270 case DW_LNS_set_column
:
2271 dwarf2_leb128_as_unsigned(&traverse
);
2273 case DW_LNS_negate_stmt
:
2276 case DW_LNS_set_basic_block
:
2278 case DW_LNS_const_add_pc
:
2279 address
+= ((255 - opcode_base
) / line_range
) * insn_size
;
2281 case DW_LNS_fixed_advance_pc
:
2282 address
+= dwarf2_parse_u2(&traverse
);
2284 case DW_LNS_extended_op
:
2285 dwarf2_leb128_as_unsigned(&traverse
);
2286 extopcode
= dwarf2_parse_byte(&traverse
);
2289 case DW_LNE_end_sequence
:
2290 dwarf2_set_line_number(ctx
->module
, address
, &files
, file
, line
);
2291 end_sequence
= TRUE
;
2293 case DW_LNE_set_address
:
2294 address
= ctx
->load_offset
+ dwarf2_parse_addr(&traverse
);
2296 case DW_LNE_define_file
:
2297 FIXME("not handled define file %s\n", traverse
.data
);
2298 traverse
.data
+= strlen((const char *)traverse
.data
) + 1;
2299 dwarf2_leb128_as_unsigned(&traverse
);
2300 dwarf2_leb128_as_unsigned(&traverse
);
2301 dwarf2_leb128_as_unsigned(&traverse
);
2303 case DW_LNE_set_discriminator
:
2307 descr
= dwarf2_leb128_as_unsigned(&traverse
);
2308 WARN("not handled discriminator %x\n", descr
);
2312 FIXME("Unsupported extended opcode %x\n", extopcode
);
2317 WARN("Unsupported opcode %x\n", opcode
);
2318 for (i
= 0; i
< opcode_len
[opcode
]; i
++)
2319 dwarf2_leb128_as_unsigned(&traverse
);
2328 static BOOL
dwarf2_parse_compilation_unit(const dwarf2_section_t
* sections
,
2329 struct module
* module
,
2330 const struct elf_thunk_area
* thunks
,
2331 dwarf2_traverse_context_t
* mod_ctx
,
2332 unsigned long load_offset
)
2334 dwarf2_parse_context_t ctx
;
2335 dwarf2_traverse_context_t abbrev_ctx
;
2336 dwarf2_debug_info_t
* di
;
2337 dwarf2_traverse_context_t cu_ctx
;
2338 const unsigned char* comp_unit_start
= mod_ctx
->data
;
2339 unsigned long cu_length
;
2340 unsigned short cu_version
;
2341 unsigned long cu_abbrev_offset
;
2344 cu_length
= dwarf2_parse_u4(mod_ctx
);
2345 cu_ctx
.data
= mod_ctx
->data
;
2346 cu_ctx
.end_data
= mod_ctx
->data
+ cu_length
;
2347 mod_ctx
->data
+= cu_length
;
2348 cu_version
= dwarf2_parse_u2(&cu_ctx
);
2349 cu_abbrev_offset
= dwarf2_parse_u4(&cu_ctx
);
2350 cu_ctx
.word_size
= dwarf2_parse_byte(&cu_ctx
);
2352 TRACE("Compilation Unit Header found at 0x%x:\n",
2353 (int)(comp_unit_start
- sections
[section_debug
].address
));
2354 TRACE("- length: %lu\n", cu_length
);
2355 TRACE("- version: %u\n", cu_version
);
2356 TRACE("- abbrev_offset: %lu\n", cu_abbrev_offset
);
2357 TRACE("- word_size: %u\n", cu_ctx
.word_size
);
2359 if (cu_version
!= 2)
2361 WARN("%u DWARF version unsupported. Wine dbghelp only support DWARF 2.\n",
2366 module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
= cu_ctx
.word_size
;
2367 mod_ctx
->word_size
= cu_ctx
.word_size
;
2369 pool_init(&ctx
.pool
, 65536);
2370 ctx
.sections
= sections
;
2371 ctx
.section
= section_debug
;
2372 ctx
.module
= module
;
2373 ctx
.thunks
= thunks
;
2374 ctx
.load_offset
= load_offset
;
2375 ctx
.ref_offset
= comp_unit_start
- sections
[section_debug
].address
;
2376 memset(ctx
.symt_cache
, 0, sizeof(ctx
.symt_cache
));
2377 ctx
.symt_cache
[sc_void
] = &symt_new_basic(module
, btVoid
, "void", 0)->symt
;
2378 ctx
.cpp_name
= NULL
;
2380 abbrev_ctx
.data
= sections
[section_abbrev
].address
+ cu_abbrev_offset
;
2381 abbrev_ctx
.end_data
= sections
[section_abbrev
].address
+ sections
[section_abbrev
].size
;
2382 abbrev_ctx
.word_size
= cu_ctx
.word_size
;
2383 dwarf2_parse_abbrev_set(&abbrev_ctx
, &ctx
.abbrev_table
, &ctx
.pool
);
2385 sparse_array_init(&ctx
.debug_info_table
, sizeof(dwarf2_debug_info_t
), 128);
2386 dwarf2_read_one_debug_info(&ctx
, &cu_ctx
, NULL
, &di
);
2388 if (di
->abbrev
->tag
== DW_TAG_compile_unit
)
2390 struct attribute name
;
2391 struct vector
* children
;
2392 dwarf2_debug_info_t
* child
= NULL
;
2394 struct attribute stmt_list
, low_pc
;
2395 struct attribute comp_dir
;
2397 if (!dwarf2_find_attribute(&ctx
, di
, DW_AT_name
, &name
))
2398 name
.u
.string
= NULL
;
2400 /* get working directory of current compilation unit */
2401 if (!dwarf2_find_attribute(&ctx
, di
, DW_AT_comp_dir
, &comp_dir
))
2402 comp_dir
.u
.string
= NULL
;
2404 if (!dwarf2_find_attribute(&ctx
, di
, DW_AT_low_pc
, &low_pc
))
2405 low_pc
.u
.uvalue
= 0;
2406 ctx
.compiland
= symt_new_compiland(module
, ctx
.load_offset
+ low_pc
.u
.uvalue
,
2407 source_new(module
, comp_dir
.u
.string
, name
.u
.string
));
2408 di
->symt
= &ctx
.compiland
->symt
;
2409 children
= dwarf2_get_di_children(&ctx
, di
);
2410 if (children
) for (i
= 0; i
< vector_length(children
); i
++)
2412 child
= *(dwarf2_debug_info_t
**)vector_at(children
, i
);
2413 dwarf2_load_one_entry(&ctx
, child
);
2415 if (dwarf2_find_attribute(&ctx
, di
, DW_AT_stmt_list
, &stmt_list
))
2417 if (dwarf2_parse_line_numbers(sections
, &ctx
, comp_dir
.u
.string
, stmt_list
.u
.uvalue
))
2418 module
->module
.LineNumbers
= TRUE
;
2422 else FIXME("Should have a compilation unit here\n");
2423 pool_destroy(&ctx
.pool
);
2427 static BOOL
dwarf2_lookup_loclist(const struct module_format
* modfmt
, const BYTE
* start
,
2428 unsigned long ip
, dwarf2_traverse_context_t
* lctx
)
2431 const BYTE
* ptr
= start
;
2434 while (ptr
< modfmt
->u
.dwarf2_info
->debug_loc
.address
+ modfmt
->u
.dwarf2_info
->debug_loc
.size
)
2436 beg
= dwarf2_get_addr(ptr
, modfmt
->u
.dwarf2_info
->word_size
); ptr
+= modfmt
->u
.dwarf2_info
->word_size
;
2437 end
= dwarf2_get_addr(ptr
, modfmt
->u
.dwarf2_info
->word_size
); ptr
+= modfmt
->u
.dwarf2_info
->word_size
;
2438 if (!beg
&& !end
) break;
2439 len
= dwarf2_get_u2(ptr
); ptr
+= 2;
2441 if (beg
<= ip
&& ip
< end
)
2444 lctx
->end_data
= ptr
+ len
;
2445 lctx
->word_size
= modfmt
->u
.dwarf2_info
->word_size
;
2450 WARN("Couldn't find ip in location list\n");
2454 static enum location_error
loc_compute_frame(struct process
* pcs
,
2455 const struct module_format
* modfmt
,
2456 const struct symt_function
* func
,
2457 DWORD_PTR ip
, struct location
* frame
)
2459 struct symt
** psym
= NULL
;
2460 struct location
* pframe
;
2461 dwarf2_traverse_context_t lctx
;
2462 enum location_error err
;
2465 for (i
=0; i
<vector_length(&func
->vchildren
); i
++)
2467 psym
= vector_at(&func
->vchildren
, i
);
2468 if ((*psym
)->tag
== SymTagCustom
)
2470 pframe
= &((struct symt_hierarchy_point
*)*psym
)->loc
;
2472 /* First, recompute the frame information, if needed */
2473 switch (pframe
->kind
)
2479 case loc_dwarf2_location_list
:
2480 WARN("Searching loclist for %s\n", func
->hash_elt
.name
);
2481 if (!dwarf2_lookup_loclist(modfmt
,
2482 modfmt
->u
.dwarf2_info
->debug_loc
.address
+ pframe
->offset
,
2484 return loc_err_out_of_scope
;
2485 if ((err
= compute_location(&lctx
, frame
, pcs
->handle
, NULL
)) < 0) return err
;
2486 if (frame
->kind
>= loc_user
)
2488 WARN("Couldn't compute runtime frame location\n");
2489 return loc_err_too_complex
;
2493 WARN("Unsupported frame kind %d\n", pframe
->kind
);
2494 return loc_err_internal
;
2499 WARN("Couldn't find Custom function point, whilst location list offset is searched\n");
2500 return loc_err_internal
;
2505 RULE_UNSET
, /* not set at all */
2506 RULE_UNDEFINED
, /* undefined value */
2507 RULE_SAME
, /* same value as previous frame */
2508 RULE_CFA_OFFSET
, /* stored at cfa offset */
2509 RULE_OTHER_REG
, /* stored in other register */
2510 RULE_EXPRESSION
, /* address specified by expression */
2511 RULE_VAL_EXPRESSION
/* value specified by expression */
2514 /* make it large enough for all CPUs */
2515 #define NB_FRAME_REGS 64
2516 #define MAX_SAVED_STATES 16
2520 ULONG_PTR cfa_offset
;
2521 unsigned char cfa_reg
;
2522 enum reg_rule cfa_rule
;
2523 enum reg_rule rules
[NB_FRAME_REGS
];
2524 ULONG_PTR regs
[NB_FRAME_REGS
];
2530 ULONG_PTR code_align
;
2531 LONG_PTR data_align
;
2532 unsigned char retaddr_reg
;
2533 unsigned char fde_encoding
;
2534 unsigned char lsda_encoding
;
2535 unsigned char signal_frame
;
2536 unsigned char aug_z_format
;
2537 unsigned char state_sp
;
2538 struct frame_state state
;
2539 struct frame_state state_stack
[MAX_SAVED_STATES
];
2542 static ULONG_PTR
dwarf2_parse_augmentation_ptr(dwarf2_traverse_context_t
* ctx
, unsigned char encoding
)
2546 if (encoding
== DW_EH_PE_omit
) return 0;
2548 switch (encoding
& 0xf0)
2553 case DW_EH_PE_pcrel
:
2554 base
= (ULONG_PTR
)ctx
->data
;
2557 FIXME("unsupported encoding %02x\n", encoding
);
2561 switch (encoding
& 0x0f)
2563 case DW_EH_PE_native
:
2564 return base
+ dwarf2_parse_addr(ctx
);
2565 case DW_EH_PE_leb128
:
2566 return base
+ dwarf2_leb128_as_unsigned(ctx
);
2567 case DW_EH_PE_data2
:
2568 return base
+ dwarf2_parse_u2(ctx
);
2569 case DW_EH_PE_data4
:
2570 return base
+ dwarf2_parse_u4(ctx
);
2571 case DW_EH_PE_data8
:
2572 return base
+ dwarf2_parse_u8(ctx
);
2573 case DW_EH_PE_signed
|DW_EH_PE_leb128
:
2574 return base
+ dwarf2_leb128_as_signed(ctx
);
2575 case DW_EH_PE_signed
|DW_EH_PE_data2
:
2576 return base
+ (signed short)dwarf2_parse_u2(ctx
);
2577 case DW_EH_PE_signed
|DW_EH_PE_data4
:
2578 return base
+ (signed int)dwarf2_parse_u4(ctx
);
2579 case DW_EH_PE_signed
|DW_EH_PE_data8
:
2580 return base
+ (LONG64
)dwarf2_parse_u8(ctx
);
2582 FIXME("unsupported encoding %02x\n", encoding
);
2587 static BOOL
parse_cie_details(dwarf2_traverse_context_t
* ctx
, struct frame_info
* info
)
2589 unsigned char version
;
2590 const char* augmentation
;
2591 const unsigned char* end
;
2594 memset(info
, 0, sizeof(*info
));
2595 info
->lsda_encoding
= DW_EH_PE_omit
;
2596 info
->aug_z_format
= 0;
2598 /* parse the CIE first */
2599 version
= dwarf2_parse_byte(ctx
);
2602 FIXME("unknown CIE version %u at %p\n", version
, ctx
->data
- 1);
2605 augmentation
= (const char*)ctx
->data
;
2606 ctx
->data
+= strlen(augmentation
) + 1;
2608 info
->code_align
= dwarf2_leb128_as_unsigned(ctx
);
2609 info
->data_align
= dwarf2_leb128_as_signed(ctx
);
2610 info
->retaddr_reg
= dwarf2_parse_byte(ctx
);
2611 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
2614 TRACE("\tparsing augmentation %s\n", augmentation
);
2615 if (*augmentation
) do
2617 switch (*augmentation
)
2620 len
= dwarf2_leb128_as_unsigned(ctx
);
2621 end
= ctx
->data
+ len
;
2622 info
->aug_z_format
= 1;
2625 info
->lsda_encoding
= dwarf2_parse_byte(ctx
);
2629 unsigned char encoding
= dwarf2_parse_byte(ctx
);
2630 /* throw away the indirect bit, as we don't care for the result */
2631 encoding
&= ~DW_EH_PE_indirect
;
2632 dwarf2_parse_augmentation_ptr(ctx
, encoding
); /* handler */
2636 info
->fde_encoding
= dwarf2_parse_byte(ctx
);
2639 info
->signal_frame
= 1;
2642 FIXME("unknown augmentation '%c'\n", *augmentation
);
2643 if (!end
) return FALSE
;
2645 } while (*++augmentation
);
2646 if (end
) ctx
->data
= end
;
2650 static BOOL
dwarf2_get_cie(unsigned long addr
, struct module
* module
, DWORD_PTR delta
,
2651 dwarf2_traverse_context_t
* fde_ctx
, dwarf2_traverse_context_t
* cie_ctx
,
2652 struct frame_info
* info
, BOOL in_eh_frame
)
2654 const unsigned char* ptr_blk
;
2655 const unsigned char* cie_ptr
;
2656 const unsigned char* last_cie_ptr
= (const unsigned char*)~0;
2658 unsigned long start
, range
;
2660 const BYTE
* start_data
= fde_ctx
->data
;
2662 cie_id
= in_eh_frame
? 0 : DW_CIE_ID
;
2663 /* skip 0-padding at beginning of section (alignment) */
2664 while (fde_ctx
->data
+ 2 * 4 < fde_ctx
->end_data
)
2666 if (dwarf2_parse_u4(fde_ctx
))
2672 for (; fde_ctx
->data
+ 2 * 4 < fde_ctx
->end_data
; fde_ctx
->data
= ptr_blk
)
2674 /* find the FDE for address addr (skip CIE) */
2675 len
= dwarf2_parse_u4(fde_ctx
);
2676 if (len
== 0xffffffff) FIXME("Unsupported yet 64-bit CIEs\n");
2677 ptr_blk
= fde_ctx
->data
+ len
;
2678 id
= dwarf2_parse_u4(fde_ctx
);
2681 last_cie_ptr
= fde_ctx
->data
- 8;
2682 /* we need some bits out of the CIE in order to parse all contents */
2683 if (!parse_cie_details(fde_ctx
, info
)) return FALSE
;
2684 cie_ctx
->data
= fde_ctx
->data
;
2685 cie_ctx
->end_data
= ptr_blk
;
2686 cie_ctx
->word_size
= fde_ctx
->word_size
;
2689 cie_ptr
= (in_eh_frame
) ? fde_ctx
->data
- id
- 4 : start_data
+ id
;
2690 if (cie_ptr
!= last_cie_ptr
)
2692 last_cie_ptr
= cie_ptr
;
2693 cie_ctx
->data
= cie_ptr
;
2694 cie_ctx
->word_size
= fde_ctx
->word_size
;
2695 cie_ctx
->end_data
= cie_ptr
+ 4;
2696 cie_ctx
->end_data
= cie_ptr
+ 4 + dwarf2_parse_u4(cie_ctx
);
2697 if (dwarf2_parse_u4(cie_ctx
) != cie_id
)
2699 FIXME("wrong CIE pointer at %x from FDE %x\n",
2700 (unsigned)(cie_ptr
- start_data
),
2701 (unsigned)(fde_ctx
->data
- start_data
));
2704 if (!parse_cie_details(cie_ctx
, info
)) return FALSE
;
2706 start
= delta
+ dwarf2_parse_augmentation_ptr(fde_ctx
, info
->fde_encoding
);
2707 range
= dwarf2_parse_augmentation_ptr(fde_ctx
, info
->fde_encoding
& 0x0F);
2709 if (addr
>= start
&& addr
< start
+ range
)
2711 /* reset the FDE context */
2712 fde_ctx
->end_data
= ptr_blk
;
2721 static int valid_reg(ULONG_PTR reg
)
2723 if (reg
>= NB_FRAME_REGS
) FIXME("unsupported reg %lx\n", reg
);
2724 return (reg
< NB_FRAME_REGS
);
2727 static void execute_cfa_instructions(dwarf2_traverse_context_t
* ctx
,
2728 ULONG_PTR last_ip
, struct frame_info
*info
)
2730 while (ctx
->data
< ctx
->end_data
&& info
->ip
<= last_ip
+ info
->signal_frame
)
2732 enum dwarf_call_frame_info op
= dwarf2_parse_byte(ctx
);
2738 case DW_CFA_advance_loc
:
2740 ULONG_PTR offset
= (op
& 0x3f) * info
->code_align
;
2741 TRACE("%lx: DW_CFA_advance_loc %lu\n", info
->ip
, offset
);
2747 ULONG_PTR reg
= op
& 0x3f;
2748 LONG_PTR offset
= dwarf2_leb128_as_unsigned(ctx
) * info
->data_align
;
2749 if (!valid_reg(reg
)) break;
2750 TRACE("%lx: DW_CFA_offset %s, %ld\n",
2752 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
)),
2754 info
->state
.regs
[reg
] = offset
;
2755 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
2758 case DW_CFA_restore
:
2760 ULONG_PTR reg
= op
& 0x3f;
2761 if (!valid_reg(reg
)) break;
2762 TRACE("%lx: DW_CFA_restore %s\n",
2764 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
)));
2765 info
->state
.rules
[reg
] = RULE_UNSET
;
2774 case DW_CFA_set_loc
:
2776 ULONG_PTR loc
= dwarf2_parse_augmentation_ptr(ctx
, info
->fde_encoding
);
2777 TRACE("%lx: DW_CFA_set_loc %lx\n", info
->ip
, loc
);
2781 case DW_CFA_advance_loc1
:
2783 ULONG_PTR offset
= dwarf2_parse_byte(ctx
) * info
->code_align
;
2784 TRACE("%lx: DW_CFA_advance_loc1 %lu\n", info
->ip
, offset
);
2788 case DW_CFA_advance_loc2
:
2790 ULONG_PTR offset
= dwarf2_parse_u2(ctx
) * info
->code_align
;
2791 TRACE("%lx: DW_CFA_advance_loc2 %lu\n", info
->ip
, offset
);
2795 case DW_CFA_advance_loc4
:
2797 ULONG_PTR offset
= dwarf2_parse_u4(ctx
) * info
->code_align
;
2798 TRACE("%lx: DW_CFA_advance_loc4 %lu\n", info
->ip
, offset
);
2802 case DW_CFA_offset_extended
:
2803 case DW_CFA_offset_extended_sf
:
2805 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2806 LONG_PTR offset
= (op
== DW_CFA_offset_extended
) ? dwarf2_leb128_as_unsigned(ctx
) * info
->data_align
2807 : dwarf2_leb128_as_signed(ctx
) * info
->data_align
;
2808 if (!valid_reg(reg
)) break;
2809 TRACE("%lx: DW_CFA_offset_extended %s, %ld\n",
2811 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
)),
2813 info
->state
.regs
[reg
] = offset
;
2814 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
2817 case DW_CFA_restore_extended
:
2819 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2820 if (!valid_reg(reg
)) break;
2821 TRACE("%lx: DW_CFA_restore_extended %s\n",
2823 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
)));
2824 info
->state
.rules
[reg
] = RULE_UNSET
;
2827 case DW_CFA_undefined
:
2829 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2830 if (!valid_reg(reg
)) break;
2831 TRACE("%lx: DW_CFA_undefined %s\n",
2833 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
)));
2834 info
->state
.rules
[reg
] = RULE_UNDEFINED
;
2837 case DW_CFA_same_value
:
2839 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2840 if (!valid_reg(reg
)) break;
2841 TRACE("%lx: DW_CFA_same_value %s\n",
2843 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
)));
2844 info
->state
.regs
[reg
] = reg
;
2845 info
->state
.rules
[reg
] = RULE_SAME
;
2848 case DW_CFA_register
:
2850 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2851 ULONG_PTR reg2
= dwarf2_leb128_as_unsigned(ctx
);
2852 if (!valid_reg(reg
) || !valid_reg(reg2
)) break;
2853 TRACE("%lx: DW_CFA_register %s == %s\n",
2855 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
)),
2856 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg2
)));
2857 info
->state
.regs
[reg
] = reg2
;
2858 info
->state
.rules
[reg
] = RULE_OTHER_REG
;
2861 case DW_CFA_remember_state
:
2862 TRACE("%lx: DW_CFA_remember_state\n", info
->ip
);
2863 if (info
->state_sp
>= MAX_SAVED_STATES
)
2864 FIXME("%lx: DW_CFA_remember_state too many nested saves\n", info
->ip
);
2866 info
->state_stack
[info
->state_sp
++] = info
->state
;
2868 case DW_CFA_restore_state
:
2869 TRACE("%lx: DW_CFA_restore_state\n", info
->ip
);
2870 if (!info
->state_sp
)
2871 FIXME("%lx: DW_CFA_restore_state without corresponding save\n", info
->ip
);
2873 info
->state
= info
->state_stack
[--info
->state_sp
];
2875 case DW_CFA_def_cfa
:
2876 case DW_CFA_def_cfa_sf
:
2878 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2879 ULONG_PTR offset
= (op
== DW_CFA_def_cfa
) ? dwarf2_leb128_as_unsigned(ctx
)
2880 : dwarf2_leb128_as_signed(ctx
) * info
->data_align
;
2881 if (!valid_reg(reg
)) break;
2882 TRACE("%lx: DW_CFA_def_cfa %s, %ld\n",
2884 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
)),
2886 info
->state
.cfa_reg
= reg
;
2887 info
->state
.cfa_offset
= offset
;
2888 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
2891 case DW_CFA_def_cfa_register
:
2893 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2894 if (!valid_reg(reg
)) break;
2895 TRACE("%lx: DW_CFA_def_cfa_register %s\n",
2897 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
)));
2898 info
->state
.cfa_reg
= reg
;
2899 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
2902 case DW_CFA_def_cfa_offset
:
2903 case DW_CFA_def_cfa_offset_sf
:
2905 ULONG_PTR offset
= (op
== DW_CFA_def_cfa_offset
) ? dwarf2_leb128_as_unsigned(ctx
)
2906 : dwarf2_leb128_as_signed(ctx
) * info
->data_align
;
2907 TRACE("%lx: DW_CFA_def_cfa_offset %ld\n", info
->ip
, offset
);
2908 info
->state
.cfa_offset
= offset
;
2909 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
2912 case DW_CFA_def_cfa_expression
:
2914 ULONG_PTR expr
= (ULONG_PTR
)ctx
->data
;
2915 ULONG_PTR len
= dwarf2_leb128_as_unsigned(ctx
);
2916 TRACE("%lx: DW_CFA_def_cfa_expression %lx-%lx\n", info
->ip
, expr
, expr
+len
);
2917 info
->state
.cfa_offset
= expr
;
2918 info
->state
.cfa_rule
= RULE_VAL_EXPRESSION
;
2922 case DW_CFA_expression
:
2923 case DW_CFA_val_expression
:
2925 ULONG_PTR reg
= dwarf2_leb128_as_unsigned(ctx
);
2926 ULONG_PTR expr
= (ULONG_PTR
)ctx
->data
;
2927 ULONG_PTR len
= dwarf2_leb128_as_unsigned(ctx
);
2928 if (!valid_reg(reg
)) break;
2929 TRACE("%lx: DW_CFA_%sexpression %s %lx-%lx\n",
2930 info
->ip
, (op
== DW_CFA_expression
) ? "" : "val_",
2931 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(reg
)),
2933 info
->state
.regs
[reg
] = expr
;
2934 info
->state
.rules
[reg
] = (op
== DW_CFA_expression
) ? RULE_EXPRESSION
: RULE_VAL_EXPRESSION
;
2938 case DW_CFA_GNU_args_size
:
2939 /* FIXME: should check that GCC is the compiler for this CU */
2941 ULONG_PTR args
= dwarf2_leb128_as_unsigned(ctx
);
2942 TRACE("%lx: DW_CFA_GNU_args_size %lu\n", info
->ip
, args
);
2947 FIXME("%lx: unknown CFA opcode %02x\n", info
->ip
, op
);
2953 /* retrieve a context register from its dwarf number */
2954 static ULONG_PTR
get_context_reg(CONTEXT
*context
, ULONG_PTR dw_reg
)
2956 unsigned regno
= dbghelp_current_cpu
->map_dwarf_register(dw_reg
), sz
;
2957 ULONG_PTR
* ptr
= dbghelp_current_cpu
->fetch_context_reg(context
, regno
, &sz
);
2959 if (sz
!= sizeof(ULONG_PTR
))
2961 FIXME("reading register %lu/%u of wrong size %u\n", dw_reg
, regno
, sz
);
2967 /* set a context register from its dwarf number */
2968 static void set_context_reg(struct cpu_stack_walk
* csw
, CONTEXT
*context
, ULONG_PTR dw_reg
,
2969 ULONG_PTR val
, BOOL isdebuggee
)
2971 unsigned regno
= dbghelp_current_cpu
->map_dwarf_register(dw_reg
), sz
;
2972 ULONG_PTR
* ptr
= dbghelp_current_cpu
->fetch_context_reg(context
, regno
, &sz
);
2978 if (sz
> sizeof(tmp
))
2980 FIXME("register %lu/%u size is too wide: %u\n", dw_reg
, regno
, sz
);
2983 if (!sw_read_mem(csw
, val
, tmp
, sz
))
2985 WARN("Couldn't read memory at %p\n", (void*)val
);
2988 memcpy(ptr
, tmp
, sz
);
2992 if (sz
!= sizeof(ULONG_PTR
))
2994 FIXME("assigning to register %lu/%u of wrong size %u\n", dw_reg
, regno
, sz
);
3001 /* copy a register from one context to another using dwarf number */
3002 static void copy_context_reg(CONTEXT
*dstcontext
, ULONG_PTR dwregdst
, CONTEXT
* srccontext
, ULONG_PTR dwregsrc
)
3004 unsigned regdstno
= dbghelp_current_cpu
->map_dwarf_register(dwregdst
), szdst
;
3005 unsigned regsrcno
= dbghelp_current_cpu
->map_dwarf_register(dwregsrc
), szsrc
;
3006 ULONG_PTR
* ptrdst
= dbghelp_current_cpu
->fetch_context_reg(dstcontext
, regdstno
, &szdst
);
3007 ULONG_PTR
* ptrsrc
= dbghelp_current_cpu
->fetch_context_reg(srccontext
, regsrcno
, &szsrc
);
3011 FIXME("Cannot copy register %lu/%u => %lu/%u because of size mismatch (%u => %u)\n",
3012 dwregsrc
, regsrcno
, dwregdst
, regdstno
, szsrc
, szdst
);
3015 memcpy(ptrdst
, ptrsrc
, szdst
);
3018 static ULONG_PTR
eval_expression(const struct module
* module
, struct cpu_stack_walk
* csw
,
3019 const unsigned char* zp
, CONTEXT
*context
)
3021 dwarf2_traverse_context_t ctx
;
3022 ULONG_PTR reg
, sz
, tmp
, stack
[64];
3027 ctx
.end_data
= zp
+ 4;
3028 len
= dwarf2_leb128_as_unsigned(&ctx
);
3029 ctx
.end_data
= ctx
.data
+ len
;
3030 ctx
.word_size
= module
->format_info
[DFI_DWARF
]->u
.dwarf2_info
->word_size
;
3032 while (ctx
.data
< ctx
.end_data
)
3034 unsigned char opcode
= dwarf2_parse_byte(&ctx
);
3036 if (opcode
>= DW_OP_lit0
&& opcode
<= DW_OP_lit31
)
3037 stack
[++sp
] = opcode
- DW_OP_lit0
;
3038 else if (opcode
>= DW_OP_reg0
&& opcode
<= DW_OP_reg31
)
3039 stack
[++sp
] = get_context_reg(context
, opcode
- DW_OP_reg0
);
3040 else if (opcode
>= DW_OP_breg0
&& opcode
<= DW_OP_breg31
)
3041 stack
[++sp
] = get_context_reg(context
, opcode
- DW_OP_breg0
) + dwarf2_leb128_as_signed(&ctx
);
3042 else switch (opcode
)
3044 case DW_OP_nop
: break;
3045 case DW_OP_addr
: stack
[++sp
] = dwarf2_parse_addr(&ctx
); break;
3046 case DW_OP_const1u
: stack
[++sp
] = dwarf2_parse_byte(&ctx
); break;
3047 case DW_OP_const1s
: stack
[++sp
] = (signed char)dwarf2_parse_byte(&ctx
); break;
3048 case DW_OP_const2u
: stack
[++sp
] = dwarf2_parse_u2(&ctx
); break;
3049 case DW_OP_const2s
: stack
[++sp
] = (short)dwarf2_parse_u2(&ctx
); break;
3050 case DW_OP_const4u
: stack
[++sp
] = dwarf2_parse_u4(&ctx
); break;
3051 case DW_OP_const4s
: stack
[++sp
] = (signed int)dwarf2_parse_u4(&ctx
); break;
3052 case DW_OP_const8u
: stack
[++sp
] = dwarf2_parse_u8(&ctx
); break;
3053 case DW_OP_const8s
: stack
[++sp
] = (LONG_PTR
)dwarf2_parse_u8(&ctx
); break;
3054 case DW_OP_constu
: stack
[++sp
] = dwarf2_leb128_as_unsigned(&ctx
); break;
3055 case DW_OP_consts
: stack
[++sp
] = dwarf2_leb128_as_signed(&ctx
); break;
3057 if (!sw_read_mem(csw
, stack
[sp
], &tmp
, sizeof(tmp
)))
3059 ERR("Couldn't read memory at %lx\n", stack
[sp
]);
3064 case DW_OP_dup
: stack
[sp
+ 1] = stack
[sp
]; sp
++; break;
3065 case DW_OP_drop
: sp
--; break;
3066 case DW_OP_over
: stack
[sp
+ 1] = stack
[sp
- 1]; sp
++; break;
3067 case DW_OP_pick
: stack
[sp
+ 1] = stack
[sp
- dwarf2_parse_byte(&ctx
)]; sp
++; break;
3068 case DW_OP_swap
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = tmp
; break;
3069 case DW_OP_rot
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = stack
[sp
-2]; stack
[sp
-2] = tmp
; break;
3070 case DW_OP_abs
: stack
[sp
] = labs(stack
[sp
]); break;
3071 case DW_OP_neg
: stack
[sp
] = -stack
[sp
]; break;
3072 case DW_OP_not
: stack
[sp
] = ~stack
[sp
]; break;
3073 case DW_OP_and
: stack
[sp
-1] &= stack
[sp
]; sp
--; break;
3074 case DW_OP_or
: stack
[sp
-1] |= stack
[sp
]; sp
--; break;
3075 case DW_OP_minus
: stack
[sp
-1] -= stack
[sp
]; sp
--; break;
3076 case DW_OP_mul
: stack
[sp
-1] *= stack
[sp
]; sp
--; break;
3077 case DW_OP_plus
: stack
[sp
-1] += stack
[sp
]; sp
--; break;
3078 case DW_OP_xor
: stack
[sp
-1] ^= stack
[sp
]; sp
--; break;
3079 case DW_OP_shl
: stack
[sp
-1] <<= stack
[sp
]; sp
--; break;
3080 case DW_OP_shr
: stack
[sp
-1] >>= stack
[sp
]; sp
--; break;
3081 case DW_OP_plus_uconst
: stack
[sp
] += dwarf2_leb128_as_unsigned(&ctx
); break;
3082 case DW_OP_shra
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (1 << stack
[sp
]); sp
--; break;
3083 case DW_OP_div
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (LONG_PTR
)stack
[sp
]; sp
--; break;
3084 case DW_OP_mod
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] % (LONG_PTR
)stack
[sp
]; sp
--; break;
3085 case DW_OP_ge
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] >= (LONG_PTR
)stack
[sp
]); sp
--; break;
3086 case DW_OP_gt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] > (LONG_PTR
)stack
[sp
]); sp
--; break;
3087 case DW_OP_le
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] <= (LONG_PTR
)stack
[sp
]); sp
--; break;
3088 case DW_OP_lt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] < (LONG_PTR
)stack
[sp
]); sp
--; break;
3089 case DW_OP_eq
: stack
[sp
-1] = (stack
[sp
-1] == stack
[sp
]); sp
--; break;
3090 case DW_OP_ne
: stack
[sp
-1] = (stack
[sp
-1] != stack
[sp
]); sp
--; break;
3091 case DW_OP_skip
: tmp
= (short)dwarf2_parse_u2(&ctx
); ctx
.data
+= tmp
; break;
3092 case DW_OP_bra
: tmp
= (short)dwarf2_parse_u2(&ctx
); if (!stack
[sp
--]) ctx
.data
+= tmp
; break;
3093 case DW_OP_GNU_encoded_addr
:
3094 tmp
= dwarf2_parse_byte(&ctx
);
3095 stack
[++sp
] = dwarf2_parse_augmentation_ptr(&ctx
, tmp
);
3098 stack
[++sp
] = get_context_reg(context
, dwarf2_leb128_as_unsigned(&ctx
));
3101 reg
= dwarf2_leb128_as_unsigned(&ctx
);
3102 tmp
= dwarf2_leb128_as_signed(&ctx
);
3103 stack
[++sp
] = get_context_reg(context
, reg
) + tmp
;
3105 case DW_OP_deref_size
:
3106 sz
= dwarf2_parse_byte(&ctx
);
3107 if (!sw_read_mem(csw
, stack
[sp
], &tmp
, sz
))
3109 ERR("Couldn't read memory at %lx\n", stack
[sp
]);
3112 /* do integral promotion */
3115 case 1: stack
[sp
] = *(unsigned char*)&tmp
; break;
3116 case 2: stack
[sp
] = *(unsigned short*)&tmp
; break;
3117 case 4: stack
[sp
] = *(unsigned int*)&tmp
; break;
3118 case 8: stack
[sp
] = *(ULONG_PTR
*)&tmp
; break; /* FIXME: won't work on 32bit platform */
3119 default: FIXME("Unknown size for deref 0x%lx\n", sz
);
3123 FIXME("unhandled opcode %02x\n", opcode
);
3129 static void apply_frame_state(const struct module
* module
, struct cpu_stack_walk
* csw
,
3130 CONTEXT
*context
, struct frame_state
*state
, ULONG_PTR
* cfa
)
3134 CONTEXT new_context
= *context
;
3136 switch (state
->cfa_rule
)
3138 case RULE_EXPRESSION
:
3139 *cfa
= eval_expression(module
, csw
, (const unsigned char*)state
->cfa_offset
, context
);
3140 if (!sw_read_mem(csw
, *cfa
, cfa
, sizeof(*cfa
)))
3142 WARN("Couldn't read memory at %p\n", (void*)*cfa
);
3146 case RULE_VAL_EXPRESSION
:
3147 *cfa
= eval_expression(module
, csw
, (const unsigned char*)state
->cfa_offset
, context
);
3150 *cfa
= get_context_reg(context
, state
->cfa_reg
) + state
->cfa_offset
;
3155 for (i
= 0; i
< NB_FRAME_REGS
; i
++)
3157 switch (state
->rules
[i
])
3160 case RULE_UNDEFINED
:
3163 case RULE_CFA_OFFSET
:
3164 set_context_reg(csw
, &new_context
, i
, *cfa
+ state
->regs
[i
], TRUE
);
3166 case RULE_OTHER_REG
:
3167 copy_context_reg(&new_context
, i
, context
, state
->regs
[i
]);
3169 case RULE_EXPRESSION
:
3170 value
= eval_expression(module
, csw
, (const unsigned char*)state
->regs
[i
], context
);
3171 set_context_reg(csw
, &new_context
, i
, value
, TRUE
);
3173 case RULE_VAL_EXPRESSION
:
3174 value
= eval_expression(module
, csw
, (const unsigned char*)state
->regs
[i
], context
);
3175 set_context_reg(csw
, &new_context
, i
, value
, FALSE
);
3179 *context
= new_context
;
3182 /***********************************************************************
3183 * dwarf2_virtual_unwind
3186 BOOL
dwarf2_virtual_unwind(struct cpu_stack_walk
* csw
, ULONG_PTR ip
, CONTEXT
* context
, ULONG_PTR
* cfa
)
3188 struct module_pair pair
;
3189 struct frame_info info
;
3190 dwarf2_traverse_context_t cie_ctx
, fde_ctx
;
3191 struct module_format
* modfmt
;
3192 const unsigned char* end
;
3195 if (!(pair
.pcs
= process_find_by_handle(csw
->hProcess
)) ||
3196 !(pair
.requested
= module_find_by_addr(pair
.pcs
, ip
, DMT_UNKNOWN
)) ||
3197 !module_get_debug(&pair
))
3199 modfmt
= pair
.effective
->format_info
[DFI_DWARF
];
3200 if (!modfmt
) return FALSE
;
3201 memset(&info
, 0, sizeof(info
));
3202 fde_ctx
.data
= modfmt
->u
.dwarf2_info
->eh_frame
.address
;
3203 fde_ctx
.end_data
= fde_ctx
.data
+ modfmt
->u
.dwarf2_info
->eh_frame
.size
;
3204 fde_ctx
.word_size
= modfmt
->u
.dwarf2_info
->word_size
;
3205 /* let offsets relative to the eh_frame sections be correctly computed, as we'll map
3206 * in this process the IMAGE section at a different address as the one expected by
3209 delta
= pair
.effective
->module
.BaseOfImage
+ modfmt
->u
.dwarf2_info
->eh_frame
.rva
-
3210 (DWORD_PTR
)modfmt
->u
.dwarf2_info
->eh_frame
.address
;
3211 if (!dwarf2_get_cie(ip
, pair
.effective
, delta
, &fde_ctx
, &cie_ctx
, &info
, TRUE
))
3213 fde_ctx
.data
= modfmt
->u
.dwarf2_info
->debug_frame
.address
;
3214 fde_ctx
.end_data
= fde_ctx
.data
+ modfmt
->u
.dwarf2_info
->debug_frame
.size
;
3215 fde_ctx
.word_size
= modfmt
->u
.dwarf2_info
->word_size
;
3216 delta
= pair
.effective
->reloc_delta
;
3217 if (!dwarf2_get_cie(ip
, pair
.effective
, delta
, &fde_ctx
, &cie_ctx
, &info
, FALSE
))
3219 TRACE("Couldn't find information for %lx\n", ip
);
3224 TRACE("function %lx/%lx code_align %lu data_align %ld retaddr %s\n",
3225 ip
, info
.ip
, info
.code_align
, info
.data_align
,
3226 dbghelp_current_cpu
->fetch_regname(dbghelp_current_cpu
->map_dwarf_register(info
.retaddr_reg
)));
3228 /* if at very beginning of function, return and use default unwinder */
3229 if (ip
== info
.ip
) return FALSE
;
3230 execute_cfa_instructions(&cie_ctx
, ip
, &info
);
3232 if (info
.aug_z_format
) /* get length of augmentation data */
3234 ULONG_PTR len
= dwarf2_leb128_as_unsigned(&fde_ctx
);
3235 end
= fde_ctx
.data
+ len
;
3238 dwarf2_parse_augmentation_ptr(&fde_ctx
, info
.lsda_encoding
); /* handler_data */
3239 if (end
) fde_ctx
.data
= end
;
3241 execute_cfa_instructions(&fde_ctx
, ip
, &info
);
3242 apply_frame_state(pair
.effective
, csw
, context
, &info
.state
, cfa
);
3247 static void dwarf2_location_compute(struct process
* pcs
,
3248 const struct module_format
* modfmt
,
3249 const struct symt_function
* func
,
3250 struct location
* loc
)
3252 struct location frame
;
3255 dwarf2_traverse_context_t lctx
;
3257 if (!func
->container
|| func
->container
->tag
!= SymTagCompiland
)
3259 WARN("We'd expect function %s's container to exist and be a compiland\n", func
->hash_elt
.name
);
3260 err
= loc_err_internal
;
3264 /* instruction pointer relative to compiland's start */
3265 ip
= pcs
->ctx_frame
.InstructionOffset
- ((struct symt_compiland
*)func
->container
)->address
;
3267 if ((err
= loc_compute_frame(pcs
, modfmt
, func
, ip
, &frame
)) == 0)
3271 case loc_dwarf2_location_list
:
3272 /* Then, if the variable has a location list, find it !! */
3273 if (dwarf2_lookup_loclist(modfmt
,
3274 modfmt
->u
.dwarf2_info
->debug_loc
.address
+ loc
->offset
,
3277 err
= loc_err_out_of_scope
;
3279 case loc_dwarf2_block
:
3280 /* or if we have a copy of an existing block, get ready for it */
3282 unsigned* ptr
= (unsigned*)loc
->offset
;
3284 lctx
.data
= (const BYTE
*)(ptr
+ 1);
3285 lctx
.end_data
= lctx
.data
+ *ptr
;
3286 lctx
.word_size
= modfmt
->u
.dwarf2_info
->word_size
;
3289 /* now get the variable */
3290 err
= compute_location(&lctx
, loc
, pcs
->handle
, &frame
);
3297 WARN("Unsupported local kind %d\n", loc
->kind
);
3298 err
= loc_err_internal
;
3304 loc
->kind
= loc_register
;
3310 static void *zalloc(void *priv
, uInt items
, uInt sz
)
3312 return HeapAlloc(GetProcessHeap(), 0, items
* sz
);
3315 static void zfree(void *priv
, void *addr
)
3317 HeapFree(GetProcessHeap(), 0, addr
);
3320 static inline BOOL
dwarf2_init_zsection(dwarf2_section_t
* section
,
3321 const char* zsectname
,
3322 struct image_section_map
* ism
)
3329 BYTE
*addr
, *sect
= (BYTE
*)image_map_section(ism
);
3330 size_t sz
= image_get_map_size(ism
);
3332 if (sz
<= 12 || memcmp(sect
, "ZLIB", 4))
3334 ERR("invalid compressed section %s\n", zsectname
);
3338 #ifdef WORDS_BIGENDIAN
3339 li
.u
.HighPart
= *(DWORD
*)§
[4];
3340 li
.u
.LowPart
= *(DWORD
*)§
[8];
3342 li
.u
.HighPart
= RtlUlongByteSwap(*(DWORD
*)§
[4]);
3343 li
.u
.LowPart
= RtlUlongByteSwap(*(DWORD
*)§
[8]);
3346 addr
= HeapAlloc(GetProcessHeap(), 0, li
.QuadPart
);
3350 z
.next_in
= §
[12];
3351 z
.avail_in
= sz
- 12;
3356 res
= inflateInit(&z
);
3359 FIXME("inflateInit failed with %i / %s\n", res
, z
.msg
);
3364 z
.next_out
= addr
+ z
.total_out
;
3365 z
.avail_out
= li
.QuadPart
- z
.total_out
;
3366 res
= inflate(&z
, Z_FINISH
);
3367 } while (z
.avail_in
&& res
== Z_STREAM_END
);
3369 if (res
!= Z_STREAM_END
)
3371 FIXME("Decompression failed with %i / %s\n", res
, z
.msg
);
3376 section
->compressed
= TRUE
;
3377 section
->address
= addr
;
3378 section
->rva
= image_get_map_rva(ism
);
3379 section
->size
= z
.total_out
;
3385 HeapFree(GetProcessHeap(), 0, addr
);
3387 image_unmap_section(ism
);
3393 static inline BOOL
dwarf2_init_section(dwarf2_section_t
* section
, struct image_file_map
* fmap
,
3394 const char* sectname
, const char* zsectname
,
3395 struct image_section_map
* ism
)
3397 struct image_section_map local_ism
;
3399 if (!ism
) ism
= &local_ism
;
3401 section
->compressed
= FALSE
;
3402 if (image_find_section(fmap
, sectname
, ism
))
3404 section
->address
= (const BYTE
*)image_map_section(ism
);
3405 section
->size
= image_get_map_size(ism
);
3406 section
->rva
= image_get_map_rva(ism
);
3410 section
->address
= NULL
;
3414 if (zsectname
&& image_find_section(fmap
, zsectname
, ism
))
3417 return dwarf2_init_zsection(section
, zsectname
, ism
);
3419 FIXME("dbghelp not built with zlib, but compressed section found\n" );
3426 static inline void dwarf2_fini_section(dwarf2_section_t
* section
)
3428 if (section
->compressed
)
3429 HeapFree(GetProcessHeap(), 0, (void*)section
->address
);
3432 static void dwarf2_module_remove(struct process
* pcs
, struct module_format
* modfmt
)
3434 dwarf2_fini_section(&modfmt
->u
.dwarf2_info
->debug_loc
);
3435 dwarf2_fini_section(&modfmt
->u
.dwarf2_info
->debug_frame
);
3436 HeapFree(GetProcessHeap(), 0, modfmt
);
3439 BOOL
dwarf2_parse(struct module
* module
, unsigned long load_offset
,
3440 const struct elf_thunk_area
* thunks
,
3441 struct image_file_map
* fmap
)
3443 dwarf2_section_t eh_frame
, section
[section_max
];
3444 dwarf2_traverse_context_t mod_ctx
;
3445 struct image_section_map debug_sect
, debug_str_sect
, debug_abbrev_sect
,
3446 debug_line_sect
, debug_ranges_sect
, eh_frame_sect
;
3448 struct module_format
* dwarf2_modfmt
;
3450 dwarf2_init_section(&eh_frame
, fmap
, ".eh_frame", NULL
, &eh_frame_sect
);
3451 dwarf2_init_section(§ion
[section_debug
], fmap
, ".debug_info", ".zdebug_info", &debug_sect
);
3452 dwarf2_init_section(§ion
[section_abbrev
], fmap
, ".debug_abbrev", ".zdebug_abbrev", &debug_abbrev_sect
);
3453 dwarf2_init_section(§ion
[section_string
], fmap
, ".debug_str", ".zdebug_str", &debug_str_sect
);
3454 dwarf2_init_section(§ion
[section_line
], fmap
, ".debug_line", ".zdebug_line", &debug_line_sect
);
3455 dwarf2_init_section(§ion
[section_ranges
], fmap
, ".debug_ranges", ".zdebug_ranges", &debug_ranges_sect
);
3457 /* to do anything useful we need either .eh_frame or .debug_info */
3458 if ((!eh_frame
.address
|| eh_frame
.address
== IMAGE_NO_MAP
) &&
3459 (!section
[section_debug
].address
|| section
[section_debug
].address
== IMAGE_NO_MAP
))
3465 if (fmap
->modtype
== DMT_ELF
&& debug_sect
.fmap
)
3467 /* debug info might have a different base address than .so file
3468 * when elf file is prelinked after splitting off debug info
3469 * adjust symbol base addresses accordingly
3471 load_offset
+= fmap
->u
.elf
.elf_start
- debug_sect
.fmap
->u
.elf
.elf_start
;
3474 TRACE("Loading Dwarf2 information for %s\n", debugstr_w(module
->module
.ModuleName
));
3476 mod_ctx
.data
= section
[section_debug
].address
;
3477 mod_ctx
.end_data
= mod_ctx
.data
+ section
[section_debug
].size
;
3478 mod_ctx
.word_size
= 0; /* will be correctly set later on */
3480 dwarf2_modfmt
= HeapAlloc(GetProcessHeap(), 0,
3481 sizeof(*dwarf2_modfmt
) + sizeof(*dwarf2_modfmt
->u
.dwarf2_info
));
3487 dwarf2_modfmt
->module
= module
;
3488 dwarf2_modfmt
->remove
= dwarf2_module_remove
;
3489 dwarf2_modfmt
->loc_compute
= dwarf2_location_compute
;
3490 dwarf2_modfmt
->u
.dwarf2_info
= (struct dwarf2_module_info_s
*)(dwarf2_modfmt
+ 1);
3491 dwarf2_modfmt
->u
.dwarf2_info
->word_size
= 0; /* will be correctly set later on */
3492 dwarf2_modfmt
->module
->format_info
[DFI_DWARF
] = dwarf2_modfmt
;
3494 /* As we'll need later some sections' content, we won't unmap these
3495 * sections upon existing this function
3497 dwarf2_init_section(&dwarf2_modfmt
->u
.dwarf2_info
->debug_loc
, fmap
, ".debug_loc", ".zdebug_loc", NULL
);
3498 dwarf2_init_section(&dwarf2_modfmt
->u
.dwarf2_info
->debug_frame
, fmap
, ".debug_frame", ".zdebug_frame", NULL
);
3499 dwarf2_modfmt
->u
.dwarf2_info
->eh_frame
= eh_frame
;
3501 while (mod_ctx
.data
< mod_ctx
.end_data
)
3503 dwarf2_parse_compilation_unit(section
, dwarf2_modfmt
->module
, thunks
, &mod_ctx
, load_offset
);
3505 dwarf2_modfmt
->module
->module
.SymType
= SymDia
;
3506 dwarf2_modfmt
->module
->module
.CVSig
= 'D' | ('W' << 8) | ('A' << 16) | ('R' << 24);
3507 /* FIXME: we could have a finer grain here */
3508 dwarf2_modfmt
->module
->module
.GlobalSymbols
= TRUE
;
3509 dwarf2_modfmt
->module
->module
.TypeInfo
= TRUE
;
3510 dwarf2_modfmt
->module
->module
.SourceIndexed
= TRUE
;
3511 dwarf2_modfmt
->module
->module
.Publics
= TRUE
;
3513 /* set the word_size for eh_frame parsing */
3514 dwarf2_modfmt
->u
.dwarf2_info
->word_size
= fmap
->addr_size
/ 8;
3517 dwarf2_fini_section(§ion
[section_debug
]);
3518 dwarf2_fini_section(§ion
[section_abbrev
]);
3519 dwarf2_fini_section(§ion
[section_string
]);
3520 dwarf2_fini_section(§ion
[section_line
]);
3521 dwarf2_fini_section(§ion
[section_ranges
]);
3523 image_unmap_section(&debug_sect
);
3524 image_unmap_section(&debug_abbrev_sect
);
3525 image_unmap_section(&debug_str_sect
);
3526 image_unmap_section(&debug_line_sect
);
3527 image_unmap_section(&debug_ranges_sect
);
3528 if (!ret
) image_unmap_section(&eh_frame_sect
);