Eric Pouech : winedbg: Added a maintenance command to load a given module ( for debug purposes).

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b2557f25d90380a58593f4753f188b9e116905db
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=b2557f25d90380a58593f4753f...

Author: Eric Pouech <eric.pouech(a)wanadoo.fr>
Date:   Tue Jan  2 14:23:48 2007 +0100

winedbg: Added a maintenance command to load a given module (for debug purposes).

---

 programs/winedbg/Makefile.in  |    1 +
 programs/winedbg/dbg.y        |    6 ++-
 programs/winedbg/debug.l      |    5 +-
 programs/winedbg/debugger.h   |    3 +
 programs/winedbg/tgt_module.c |   90 +++++++++++++++++++++++++++++++++++++++++
 5 files changed, 101 insertions(+), 4 deletions(-)

diff --git a/programs/winedbg/Makefile.in b/programs/winedbg/Makefile.in
index dd343db..b340ecb 100644
--- a/programs/winedbg/Makefile.in
+++ b/programs/winedbg/Makefile.in
@@ -25,6 +25,7 @@ C_SRCS = \
 	stack.c \
 	tgt_active.c \
 	tgt_minidump.c \
+	tgt_module.c \
 	types.c \
 	winedbg.c
 
diff --git a/programs/winedbg/dbg.y b/programs/winedbg/dbg.y
index 3b5414a..aea48bd 100644
--- a/programs/winedbg/dbg.y
+++ b/programs/winedbg/dbg.y
@@ -54,8 +54,8 @@ static int dbg_error(const char*);
 %token tENABLE tDISABLE tBREAK tHBREAK tWATCH tDELETE tSET tPRINT tEXAM
 %token tABORT tECHO
 %token tCLASS tMAPS tSTACK tSEGMENTS tSYMBOL tREGS tALLREGS tWND tQUEUE tLOCAL tEXCEPTION
-%token tPROCESS tTHREAD tMODREF tEOL tEOF
-%token tFRAME tSHARE tCOND tDISPLAY tUNDISPLAY tDISASSEMBLE
+%token tPROCESS tTHREAD tEOL tEOF
+%token tFRAME tSHARE tMODULE tCOND tDISPLAY tUNDISPLAY tDISASSEMBLE
 %token tSTEPI tNEXTI tFINISH tSHOW tDIR tWHATIS tSOURCE
 %token <string> tPATH tIDENTIFIER tSTRING tDEBUGSTR tINTVAR
 %token <integer> tNUM tFORMAT
@@ -285,6 +285,8 @@ info_command:
 
 maintenance_command:
       tMAINTENANCE tTYPE        { print_types(); }
+    | tMAINTENANCE tMODULE tSTRING { tgt_module_load($3, FALSE); }
+    | tMAINTENANCE '*' tMODULE tSTRING { tgt_module_load($4, TRUE); }
     ;
 
 noprocess_state:
diff --git a/programs/winedbg/debug.l b/programs/winedbg/debug.l
index 451c96d..9613fed 100644
--- a/programs/winedbg/debug.l
+++ b/programs/winedbg/debug.l
@@ -177,11 +177,12 @@ STRING     \"[^\n"]+\"
 <INITIAL>whatis|whati|what		{ BEGIN(NOCMD); return tWHATIS; }
 <INITIAL,NOPROCESS>run|ru|r     	{ BEGIN(ASTRING_EXPECTED); return tRUN;}
 <INITIAL>detach|detac|deta|det   	{ BEGIN(NOCMD); return tDETACH; }
-<INITIAL>maintenance|maint              { BEGIN(MAINT_CMD); return tMAINTENANCE; }
+<INITIAL,NOPROCESS>maintenance|maint    { BEGIN(MAINT_CMD); return tMAINTENANCE; }
 <INITIAL>minidump|mdmp                  { BEGIN(PATH_EXPECTED); return tMINIDUMP; }
 <INITIAL>echo				{ BEGIN(ASTRING_EXPECTED); return tECHO; }
 <NOPROCESS>attach|attac|atta|att 	{ BEGIN(NOCMD); return tATTACH; }
-<INFO_CMD>share|shar|sha		{ return tSHARE; }
+<INFO_CMD>share|shar|sha                { return tSHARE; }
+<MAINT_CMD>module|modul|mod             { BEGIN(ASTRING_EXPECTED); return tMODULE; }
 <INFO_CMD>locals|local|loca|loc		{ return tLOCAL; }
 <INFO_CMD>class|clas|cla                { return tCLASS; }
 <INFO_CMD>process|proces|proce|proc   	{ return tPROCESS; }
diff --git a/programs/winedbg/debugger.h b/programs/winedbg/debugger.h
index 91d5a78..0317247 100644
--- a/programs/winedbg/debugger.h
+++ b/programs/winedbg/debugger.h
@@ -393,6 +393,9 @@ extern BOOL             dbg_attach_debug
 extern void             minidump_write(const char*, const EXCEPTION_RECORD*);
 extern enum dbg_start   minidump_reload(int argc, char* argv[]);
 
+  /* tgt_module.c */
+extern enum dbg_start   tgt_module_load(const char* name, BOOL keep);
+
   /* types.c */
 extern void             print_value(const struct dbg_lvalue* addr, char format, int level);
 extern int              types_print_type(const struct dbg_type*, BOOL details);
diff --git a/programs/winedbg/tgt_module.c b/programs/winedbg/tgt_module.c
new file mode 100644
index 0000000..0f72510
--- /dev/null
+++ b/programs/winedbg/tgt_module.c
@@ -0,0 +1,90 @@
+/*
+ * Wine debugger - loading a module for debug purposes
+ *
+ * Copyright 2006 Eric Pouech
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#define NONAMELESSUNION
+#define NONAMELESSSTRUCT
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include "debugger.h"
+#include "wine/debug.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
+
+static struct be_process_io be_process_module_io;
+
+static BOOL WINAPI tgt_process_module_read(HANDLE hProcess, const void* addr,
+                                             void* buffer, SIZE_T len, SIZE_T* rlen)
+{
+    return FALSE;
+}
+
+static BOOL WINAPI tgt_process_module_write(HANDLE hProcess, void* addr,
+                                             const void* buffer, SIZE_T len, SIZE_T* wlen)
+{
+    return FALSE;
+}
+
+enum dbg_start tgt_module_load(const char* name, BOOL keep)
+{
+    DWORD opts = SymGetOptions();
+    HANDLE hDummy = (HANDLE)0x87654321;
+
+    SymSetOptions((opts & ~(SYMOPT_UNDNAME|SYMOPT_DEFERRED_LOADS)) |
+                  SYMOPT_LOAD_LINES | SYMOPT_AUTO_PUBLICS | 0x40000000);
+    SymInitialize(hDummy, NULL, FALSE);
+    SymLoadModule(hDummy, NULL, name, NULL, 0, 0);
+
+    if (keep)
+    {
+        dbg_printf("Non supported mode... errors may occur\n"
+                   "Use at your own risks\n");
+        SymSetOptions(SymGetOptions() | 0x40000000);
+        dbg_curr_process = dbg_add_process(&be_process_module_io, 1, hDummy);
+        dbg_curr_pid = 1;
+        /* FIXME: missing thread creation, fetching frames, restoring dbghelp's options... */
+    }
+    else
+    {
+        SymCleanup(hDummy);
+        SymSetOptions(opts);
+    }
+
+    return start_ok;
+}
+
+static BOOL tgt_process_module_close_process(struct dbg_process* pcs, BOOL kill)
+{
+    SymCleanup(pcs->handle);
+    dbg_del_process(pcs);
+    return TRUE;
+}
+
+static struct be_process_io be_process_module_io =
+{
+    tgt_process_module_close_process,
+    tgt_process_module_read,
+    tgt_process_module_write,
+};