Alexandre Julliard : ntdll: Fetch the debug channels from the PEB memory block on the PE side.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 1e5eee0fc318459d7ef071998e8ed05f2530d2c3
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=1e5eee0fc318459d7ef071998...

Author: Alexandre Julliard 
Date:   Mon May 24 21:35:12 2021 +0200

ntdll: Fetch the debug channels from the PEB memory block on the PE side.

Signed-off-by: Alexandre Julliard

---

dlls/ntdll/thread.c      | 30 +++++++++++++++++++++++++++++-
 dlls/ntdll/unix/loader.c |  1 -
 dlls/ntdll/unixlib.h     |  3 +--
 3 files changed, 30 insertions(+), 4 deletions(-)

diff --git a/dlls/ntdll/thread.c b/dlls/ntdll/thread.c
index a95880ca4bd..bcf010724c4 100644
--- a/dlls/ntdll/thread.c
+++ b/dlls/ntdll/thread.c
@@ -37,6 +37,16 @@ WINE_DECLARE_DEBUG_CHANNEL(thread);

struct _KUSER_SHARED_DATA *user_shared_data = (void *)0x7ffe0000;

+static int nb_debug_options;
+static struct __wine_debug_channel *debug_options;
+
+static void init_options(void)
+{
+    unsigned int offset = page_size * (sizeof(void *) / 4);
+
+    debug_options = (struct __wine_debug_channel *)((char *)NtCurrentTeb()->Peb + offset);
+    while (debug_options[nb_debug_options].name[0]) nb_debug_options++;
+}

/***********************************************************************
  *		__wine_dbg_get_channel_flags  (NTDLL.@)
@@ -45,7 +55,25 @@ struct _KUSER_SHARED_DATA *user_shared_data = (void *)0x7ffe0000;
  */
 unsigned char __cdecl __wine_dbg_get_channel_flags( struct __wine_debug_channel *channel )
 {
-    return unix_funcs->dbg_get_channel_flags( channel );
+    int min, max, pos, res;
+    unsigned char default_flags;
+
+    if (!debug_options) init_options();
+
+    min = 0;
+    max = nb_debug_options - 1;
+    while (min <= max)
+    {
+        pos = (min + max) / 2;
+        res = strcmp( channel->name, debug_options[pos].name );
+        if (!res) return debug_options[pos].flags;
+        if (res < 0) max = pos - 1;
+        else min = pos + 1;
+    }
+    /* no option for this channel */
+    default_flags = debug_options[nb_debug_options].flags;
+    if (channel->flags & (1 << __WINE_DBCL_INIT)) channel->flags = default_flags;
+    return default_flags;
 }

/***********************************************************************
diff --git a/dlls/ntdll/unix/loader.c b/dlls/ntdll/unix/loader.c
index 1b79b71b252..ff49cd5f26b 100644
--- a/dlls/ntdll/unix/loader.c
+++ b/dlls/ntdll/unix/loader.c
@@ -1840,7 +1840,6 @@ static struct unix_funcs unix_funcs =
     init_builtin_dll,
     init_unix_lib,
     unwind_builtin_dll,
-    __wine_dbg_get_channel_flags,
     __wine_dbg_strdup,
     __wine_dbg_output,
     __wine_dbg_header,
diff --git a/dlls/ntdll/unixlib.h b/dlls/ntdll/unixlib.h
index 04ae8230b1a..d0f2f4ed508 100644
--- a/dlls/ntdll/unixlib.h
+++ b/dlls/ntdll/unixlib.h
@@ -26,7 +26,7 @@
 struct _DISPATCHER_CONTEXT;

/* increment this when you change the function table */
-#define NTDLL_UNIXLIB_VERSION 120
+#define NTDLL_UNIXLIB_VERSION 121

struct unix_funcs
 {
@@ -80,7 +80,6 @@ struct unix_funcs
                                                CONTEXT *context );

/* debugging functions */
-    unsigned char (CDECL *dbg_get_channel_flags)( struct __wine_debug_channel *channel );
     const char *  (CDECL *dbg_strdup)( const char *str );
     int           (CDECL *dbg_output)( const char *str );
     int           (CDECL *dbg_header)( enum __wine_debug_class cls, struct __wine_debug_channel *channel,