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Yoann Laissus
wine
Commits
9454801c
Commit
9454801c
authored
24 years ago
by
Eric Pouech
Committed by
Alexandre Julliard
24 years ago
Browse files
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Enhanced ELF files lookup for symbolic info.
parent
7c7e3ba5
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Changes
3
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3 changed files
debugger/debugger.h
+0
-1
0 additions, 1 deletion
debugger/debugger.h
debugger/stabs.c
+101
-87
101 additions, 87 deletions
debugger/stabs.c
documentation/debugger.sgml
+19
-1
19 additions, 1 deletion
documentation/debugger.sgml
with
120 additions
and
89 deletions
debugger/debugger.h
+
0
−
1
View file @
9454801c
...
...
@@ -405,7 +405,6 @@ extern int DEBUG_GetCurrentFrame(struct name_hash ** name,
/* debugger/stabs.c */
extern
int
DEBUG_ReadExecutableDbgInfo
(
const
char
*
exe_name
);
extern
int
DEBUG_ProcessElfObject
(
const
char
*
filename
,
unsigned
int
load_offset
);
extern
int
DEBUG_ParseStabs
(
char
*
addr
,
unsigned
int
load_offset
,
unsigned
int
staboff
,
int
stablen
,
unsigned
int
strtaboff
,
int
strtablen
);
...
...
This diff is collapsed.
Click to expand it.
debugger/stabs.c
+
101
−
87
View file @
9454801c
...
...
@@ -1179,10 +1179,19 @@ DEBUG_ProcessElfSymtab(char * addr, unsigned int load_offset,
return
TRUE
;
}
int
DEBUG_ProcessElfObject
(
const
char
*
filename
,
unsigned
int
load_offset
)
/*
* Loads the symbolic information from ELF module stored in 'filename'
* the module has been loaded at 'load_offset' address, so symbols' address
* relocation is performed
* returns
* -1 if the file cannot be found/opened
* 0 if the file doesn't contain symbolic info (or this info cannot be
* read or parsed)
* 1 on success
*/
static
int
DEBUG_ProcessElfFile
(
const
char
*
filename
,
unsigned
int
load_offset
)
{
int
rtn
=
FALSE
;
int
rtn
=
-
1
;
char
*
addr
=
(
char
*
)
0xffffffff
;
int
fd
=
-
1
;
struct
stat
statbuf
;
...
...
@@ -1193,87 +1202,46 @@ DEBUG_ProcessElfObject(const char * filename, unsigned int load_offset)
int
i
;
int
stabsect
;
int
stabstrsect
;
/*
* Make sure we can stat and open this file.
*/
if
(
filename
==
NULL
)
goto
leave
;
if
(
stat
(
filename
,
&
statbuf
)
==
-
1
)
{
char
*
s
,
*
t
,
*
fn
,
*
paths
;
if
(
strchr
(
filename
,
'/'
))
goto
leave
;
paths
=
DBG_strdup
(
getenv
(
"PATH"
));
s
=
paths
;
while
(
s
&&
*
s
)
{
t
=
strchr
(
s
,
':'
);
if
(
t
)
*
t
=
'\0'
;
fn
=
(
char
*
)
DBG_alloc
(
strlen
(
filename
)
+
1
+
strlen
(
s
)
+
1
);
strcpy
(
fn
,
s
);
strcat
(
fn
,
"/"
);
strcat
(
fn
,
filename
);
if
((
rtn
=
DEBUG_ProcessElfObject
(
fn
,
load_offset
)))
{
DBG_free
(
fn
);
DBG_free
(
paths
);
goto
leave
;
}
DBG_free
(
fn
);
if
(
t
)
s
=
t
+
1
;
else
break
;
}
if
(
!
s
||
!*
s
)
DEBUG_Printf
(
DBG_CHN_MESG
,
" not found"
);
DBG_free
(
paths
);
goto
leave
;
}
if
(
DEBUG_FindModuleByName
(
filename
,
DM_TYPE_ELF
))
goto
leave
;
DEBUG_Printf
(
DBG_CHN_MESG
,
"Loading stabs debug symbols from %s (0x%08x)
\n
"
,
filename
,
load_offset
);
/* check that the file exists, and that the module hasn't been loaded yet */
if
(
stat
(
filename
,
&
statbuf
)
==
-
1
)
goto
leave
;
/*
* Now open the file, so that we can mmap() it.
*/
if
((
fd
=
open
(
filename
,
O_RDONLY
))
==
-
1
)
goto
leave
;
if
((
fd
=
open
(
filename
,
O_RDONLY
))
==
-
1
)
goto
leave
;
rtn
=
0
;
/*
* Now mmap() the file.
*/
addr
=
mmap
(
0
,
statbuf
.
st_size
,
PROT_READ
,
MAP_PRIVATE
,
fd
,
0
);
if
(
addr
==
(
char
*
)
0xffffffff
)
goto
leave
;
if
(
addr
==
(
char
*
)
0xffffffff
)
goto
leave
;
/*
* Next, we need to find a few of the internal ELF headers within
* this thing. We need the main executable header, and the section
* table.
*/
ehptr
=
(
Elf32_Ehdr
*
)
addr
;
if
(
load_offset
==
0
)
DEBUG_RegisterELFModule
(
ehptr
->
e_entry
,
filename
);
else
DEBUG_RegisterELFModule
(
load_offset
,
filename
);
DEBUG_RegisterELFModule
((
load_offset
==
0
)
?
ehptr
->
e_entry
:
load_offset
,
filename
);
spnt
=
(
Elf32_Shdr
*
)
(
addr
+
ehptr
->
e_shoff
);
nsect
=
ehptr
->
e_shnum
;
shstrtab
=
(
addr
+
spnt
[
ehptr
->
e_shstrndx
].
sh_offset
);
stabsect
=
stabstrsect
=
-
1
;
for
(
i
=
0
;
i
<
nsect
;
i
++
)
{
if
(
strcmp
(
shstrtab
+
spnt
[
i
].
sh_name
,
".stab"
)
==
0
)
stabsect
=
i
;
for
(
i
=
0
;
i
<
nsect
;
i
++
)
{
if
(
strcmp
(
shstrtab
+
spnt
[
i
].
sh_name
,
".stab"
)
==
0
)
stabsect
=
i
;
if
(
strcmp
(
shstrtab
+
spnt
[
i
].
sh_name
,
".stabstr"
)
==
0
)
stabstrsect
=
i
;
}
if
(
strcmp
(
shstrtab
+
spnt
[
i
].
sh_name
,
".stabstr"
)
==
0
)
stabstrsect
=
i
;
}
if
(
stabsect
==
-
1
||
stabstrsect
==
-
1
)
{
if
(
stabsect
==
-
1
||
stabstrsect
==
-
1
)
{
DEBUG_Printf
(
DBG_CHN_WARN
,
"no .stab section
\n
"
);
goto
leave
;
}
...
...
@@ -1290,29 +1258,81 @@ DEBUG_ProcessElfObject(const char * filename, unsigned int load_offset)
goto
leave
;
}
for
(
i
=
0
;
i
<
nsect
;
i
++
)
{
if
(
(
strcmp
(
shstrtab
+
spnt
[
i
].
sh_name
,
".symtab"
)
==
0
)
&&
(
spnt
[
i
].
sh_type
==
SHT_SYMTAB
)
)
DEBUG_ProcessElfSymtab
(
addr
,
load_offset
,
spnt
+
i
,
spnt
+
spnt
[
i
].
sh_link
);
if
(
(
strcmp
(
shstrtab
+
spnt
[
i
].
sh_name
,
".dynsym"
)
==
0
)
&&
(
spnt
[
i
].
sh_type
==
SHT_DYNSYM
)
)
DEBUG_ProcessElfSymtab
(
addr
,
load_offset
,
spnt
+
i
,
spnt
+
spnt
[
i
].
sh_link
);
}
leave:
for
(
i
=
0
;
i
<
nsect
;
i
++
)
{
if
(
(
strcmp
(
shstrtab
+
spnt
[
i
].
sh_name
,
".symtab"
)
==
0
)
&&
(
spnt
[
i
].
sh_type
==
SHT_SYMTAB
))
DEBUG_ProcessElfSymtab
(
addr
,
load_offset
,
spnt
+
i
,
spnt
+
spnt
[
i
].
sh_link
);
if
(
addr
!=
(
char
*
)
0xffffffff
)
munmap
(
addr
,
statbuf
.
st_size
);
if
(
(
strcmp
(
shstrtab
+
spnt
[
i
].
sh_name
,
".dynsym"
)
==
0
)
&&
(
spnt
[
i
].
sh_type
==
SHT_DYNSYM
))
DEBUG_ProcessElfSymtab
(
addr
,
load_offset
,
spnt
+
i
,
spnt
+
spnt
[
i
].
sh_link
);
}
leave:
if
(
addr
!=
(
char
*
)
0xffffffff
)
munmap
(
addr
,
statbuf
.
st_size
);
if
(
fd
!=
-
1
)
close
(
fd
);
return
rtn
;
}
static
int
DEBUG_ProcessElfFileFromPath
(
const
char
*
filename
,
unsigned
int
load_offset
,
const
char
*
path
)
{
int
rtn
=
FALSE
;
char
*
s
,
*
t
,
*
fn
;
char
*
paths
=
NULL
;
for
(
s
=
paths
=
DBG_strdup
(
path
);
s
&&
*
s
;
s
=
(
t
)
?
(
t
+
1
)
:
NULL
)
{
t
=
strchr
(
s
,
':'
);
if
(
t
)
*
t
=
'\0'
;
fn
=
(
char
*
)
DBG_alloc
(
strlen
(
filename
)
+
1
+
strlen
(
s
)
+
1
);
if
(
!
fn
)
break
;
strcpy
(
fn
,
s
);
strcat
(
fn
,
"/"
);
strcat
(
fn
,
filename
);
rtn
=
DEBUG_ProcessElfFile
(
fn
,
load_offset
);
DBG_free
(
fn
);
if
(
rtn
>=
0
)
break
;
s
=
(
t
)
?
(
t
+
1
)
:
NULL
;
}
DBG_free
(
paths
);
return
rtn
;
}
static
int
DEBUG_ProcessElfObject
(
const
char
*
filename
,
unsigned
int
load_offset
)
{
int
rtn
=
-
1
;
const
char
*
fmt
;
DEBUG_Printf
(
DBG_CHN_TRACE
,
"Processing elf file '%s'
\n
"
,
filename
);
if
(
filename
==
NULL
)
return
FALSE
;
if
(
DEBUG_FindModuleByName
(
filename
,
DM_TYPE_ELF
))
return
TRUE
;
rtn
=
DEBUG_ProcessElfFile
(
filename
,
load_offset
);
/* if relative pathname, try some absolute base dirs */
if
(
rtn
<
0
&&
!
strchr
(
filename
,
'/'
))
{
rtn
=
DEBUG_ProcessElfFileFromPath
(
filename
,
load_offset
,
getenv
(
"PATH"
));
if
(
rtn
<
0
)
rtn
=
DEBUG_ProcessElfFileFromPath
(
filename
,
load_offset
,
getenv
(
"LD_LIBRARY_PATH"
));
}
switch
(
rtn
)
{
case
1
:
fmt
=
"Loaded stabs debug symbols from ELF '%s' (0x%08x)
\n
"
;
break
;
case
0
:
fmt
=
"No stabs debug symbols in ELF '%s' (0x%08x)
\n
"
;
break
;
case
-
1
:
fmt
=
"Can't find file for ELF '%s' (0x%08x)
\n
"
;
break
;
default:
DEBUG_Printf
(
DBG_CHN_ERR
,
"Oooocch (%d)
\n
"
,
rtn
);
return
FALSE
;
}
DEBUG_Printf
(
DBG_CHN_MESG
,
fmt
,
filename
,
load_offset
);
return
rtn
>=
0
;
}
static
BOOL
DEBUG_WalkList
(
struct
r_debug
*
dbg_hdr
)
{
u_long
lm_addr
;
...
...
@@ -1424,12 +1444,6 @@ leave:
#else
/* !__ELF__ */
int
DEBUG_ProcessElfObject
(
const
char
*
filename
,
unsigned
int
load_offset
)
{
return
FALSE
;
}
int
DEBUG_ReadExecutableDbgInfo
(
const
char
*
exe_name
)
{
...
...
This diff is collapsed.
Click to expand it.
documentation/debugger.sgml
+
19
−
1
View file @
9454801c
...
...
@@ -5,7 +5,7 @@
<title>I Introduction</title>
<para>
written by Eric Pouech
(???)
(Last updated:
6
/1
4
/2000)
written by Eric Pouech (Last updated:
8
/1
5
/2000)
</para>
<para>
(Extracted from <filename>wine/documentation/winedbg</filename>)
...
...
@@ -107,6 +107,12 @@
use of this API to allow debugging both any Wine or WineLib
applications as well as Wine itself (kernel and all DLLs).
</para>
<para>
<command>WineDbg</command> understands symbolic information
from both Unix world (mainly ELF stabs) and from Windows
(most Microsoft debugging formats are supported - CodeView,
.DBG files...)
</para>
</sect2>
</sect1>
...
...
@@ -553,6 +559,18 @@ UseXTerm = 1
</para>
</sect3>
</sect2>
<sect2>
<title>III.3 Finding files</title>
<para>
WineDbg uses some lookup algorithms to find the files containing
the debugging information. For ELF files, the current directory,
the list of directories pointed by PATH, LD_LIBRARY_PATH are
searched (in that order). For Microsoft debugging files,
current directory, and directories pointed by _NT_SYMBOL_PATH and
_NT_ALT_SYMBOL_PATH (in that order) are searched.
</para>
</sect2>
</sect1>
<sect1 id="dbg-commands">
...
...
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