Jacek Caban : ntdll: Introduce signal_init_syscalls.
Alexandre Julliard
julliard at winehq.org
Fri Feb 19 17:20:10 CST 2021
Module: wine
Branch: master
Commit: a0a62463e3d1d053459a194e2e1bcc91bfbec0f5
URL: https://source.winehq.org/git/wine.git/?a=commit;h=a0a62463e3d1d053459a194e2e1bcc91bfbec0f5
Author: Jacek Caban <jacek at codeweavers.com>
Date: Fri Feb 19 19:08:48 2021 +0100
ntdll: Introduce signal_init_syscalls.
Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
dlls/ntdll/unix/loader.c | 4 +++-
dlls/ntdll/unix/signal_arm.c | 9 +++++++++
dlls/ntdll/unix/signal_arm64.c | 10 ++++++++++
dlls/ntdll/unix/signal_i386.c | 9 +++++++++
dlls/ntdll/unix/signal_x86_64.c | 17 +++++++++++++++++
dlls/ntdll/unix/unix_private.h | 1 +
dlls/ntdll/unix/virtual.c | 6 ------
7 files changed, 49 insertions(+), 7 deletions(-)
diff --git a/dlls/ntdll/unix/loader.c b/dlls/ntdll/unix/loader.c
index 8b1fd6edb7a..c4f897f3d0d 100644
--- a/dlls/ntdll/unix/loader.c
+++ b/dlls/ntdll/unix/loader.c
@@ -104,6 +104,7 @@ void (WINAPI *pLdrInitializeThunk)(CONTEXT*,void**,ULONG_PTR,ULONG_PTR) = NU
void (WINAPI *pRtlUserThreadStart)( PRTL_THREAD_START_ROUTINE entry, void *arg ) = NULL;
static NTSTATUS (CDECL *p__wine_set_unix_funcs)( int version, const struct unix_funcs *funcs );
+static void *syscall_dispatcher;
#ifdef __GNUC__
static void fatal_error( const char *err, ... ) __attribute__((noreturn, format(printf,1,2)));
@@ -883,7 +884,7 @@ static void load_ntdll_functions( HMODULE module )
if ((ptr = (void *)find_named_export( module, ntdll_exports, #name ))) *ptr = val; \
else ERR( "%s not found\n", #name )
- SET_PTR( __wine_syscall_dispatcher, __wine_syscall_dispatcher );
+ SET_PTR( __wine_syscall_dispatcher, syscall_dispatcher );
#ifdef __i386__
SET_PTR( __wine_ldt_copy, &__wine_ldt_copy );
#endif
@@ -1650,6 +1651,7 @@ static void start_main_thread(void)
startup_info_size = server_init_process();
virtual_map_user_shared_data();
init_cpu_info();
+ syscall_dispatcher = signal_init_syscalls();
init_files();
init_startup_info();
NtCreateKeyedEvent( &keyed_event, GENERIC_READ | GENERIC_WRITE, NULL, 0 );
diff --git a/dlls/ntdll/unix/signal_arm.c b/dlls/ntdll/unix/signal_arm.c
index 385e4807990..2de58925c84 100644
--- a/dlls/ntdll/unix/signal_arm.c
+++ b/dlls/ntdll/unix/signal_arm.c
@@ -963,6 +963,15 @@ void signal_init_process(void)
}
+/**********************************************************************
+ * signal_init_syscalls
+ */
+void *signal_init_syscalls(void)
+{
+ return __wine_syscall_dispatcher;
+}
+
+
/***********************************************************************
* init_thread_context
*/
diff --git a/dlls/ntdll/unix/signal_arm64.c b/dlls/ntdll/unix/signal_arm64.c
index 95042de45e1..9a36746f5bc 100644
--- a/dlls/ntdll/unix/signal_arm64.c
+++ b/dlls/ntdll/unix/signal_arm64.c
@@ -1120,6 +1120,16 @@ void signal_init_process(void)
exit(1);
}
+
+/**********************************************************************
+ * signal_init_syscalls
+ */
+void *signal_init_syscalls(void)
+{
+ return __wine_syscall_dispatcher;
+}
+
+
/***********************************************************************
* init_thread_context
*/
diff --git a/dlls/ntdll/unix/signal_i386.c b/dlls/ntdll/unix/signal_i386.c
index f2d58dc654d..09529a1ea96 100644
--- a/dlls/ntdll/unix/signal_i386.c
+++ b/dlls/ntdll/unix/signal_i386.c
@@ -2467,6 +2467,15 @@ void signal_init_process(void)
}
+/**********************************************************************
+ * signal_init_syscalls
+ */
+void *signal_init_syscalls(void)
+{
+ return __wine_syscall_dispatcher;
+}
+
+
/***********************************************************************
* init_thread_context
*/
diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c
index 892d208e43a..bed4958f251 100644
--- a/dlls/ntdll/unix/signal_x86_64.c
+++ b/dlls/ntdll/unix/signal_x86_64.c
@@ -34,6 +34,7 @@
#include <stdarg.h>
#include <stdio.h>
#include <sys/types.h>
+#include <sys/mman.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
@@ -2787,6 +2788,22 @@ void signal_init_process(void)
}
+/**********************************************************************
+ * signal_init_syscalls
+ */
+void *signal_init_syscalls(void)
+{
+ void *ptr;
+
+ /* sneak in a syscall dispatcher pointer at a fixed address (7ffe1000) */
+ ptr = (char *)user_shared_data + page_size;
+ anon_mmap_fixed( ptr, page_size, PROT_READ | PROT_WRITE, 0 );
+ *(void **)ptr = __wine_syscall_dispatcher;
+
+ return __wine_syscall_dispatcher;
+}
+
+
/***********************************************************************
* init_thread_context
*/
diff --git a/dlls/ntdll/unix/unix_private.h b/dlls/ntdll/unix/unix_private.h
index 1a864b6fb5d..65f526d0f7d 100644
--- a/dlls/ntdll/unix/unix_private.h
+++ b/dlls/ntdll/unix/unix_private.h
@@ -208,6 +208,7 @@ extern NTSTATUS signal_alloc_thread( TEB *teb ) DECLSPEC_HIDDEN;
extern void signal_free_thread( TEB *teb ) DECLSPEC_HIDDEN;
extern void signal_init_thread( TEB *teb ) DECLSPEC_HIDDEN;
extern void signal_init_process(void) DECLSPEC_HIDDEN;
+extern void *signal_init_syscalls(void) DECLSPEC_HIDDEN;
extern void DECLSPEC_NORETURN signal_start_thread( PRTL_THREAD_START_ROUTINE entry, void *arg,
BOOL suspend, void *thunk, TEB *teb ) DECLSPEC_HIDDEN;
extern void DECLSPEC_NORETURN signal_exit_thread( int status, void (*func)(int) ) DECLSPEC_HIDDEN;
diff --git a/dlls/ntdll/unix/virtual.c b/dlls/ntdll/unix/virtual.c
index c35f9c2fc07..3350dc665c1 100644
--- a/dlls/ntdll/unix/virtual.c
+++ b/dlls/ntdll/unix/virtual.c
@@ -2597,12 +2597,6 @@ TEB *virtual_alloc_first_teb(void)
exit(1);
}
-#ifdef __x86_64__ /* sneak in a syscall dispatcher pointer at a fixed address (7ffe1000) */
- ptr = (char *)user_shared_data + page_size;
- anon_mmap_fixed( ptr, page_size, PROT_READ | PROT_WRITE, 0 );
- *(void **)ptr = __wine_syscall_dispatcher;
-#endif
-
NtAllocateVirtualMemory( NtCurrentProcess(), &teb_block, 0, &total,
MEM_RESERVE | MEM_TOP_DOWN, PAGE_READWRITE );
teb_block_pos = 30;
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