July 2020 - Wine-Devel - list.winehq.org

[PATCH 1/2] winhttp/tests: Add tests for WINHTTP_OPTION_MAX_HTTP_AUTOMATIC_REDIRECTS.
by Owen Rudge July 3, 2020

July 3, 2020

Signed-off-by: Owen Rudge <orudge(a)codeweavers.com> --- dlls/winhttp/tests/winhttp.c | 52 ++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+)

2 1

[PATCH v3 1/2] ntdll: Fix KiUserExceptionDispatcher ABI on x86.
by Paul Gofman July 3, 2020

July 3, 2020

Signed-off-by: Paul Gofman <pgofman(a)codeweavers.com> --- v3: - pass dispatcher function address to call_user_exception_dispatcher. dlls/ntdll/signal_i386.c | 9 ++- dlls/ntdll/tests/exception.c | 111 +++++++++++++++++++++++++++++++- dlls/ntdll/unix/signal_i386.c | 10 ++- dlls/ntdll/unix/signal_x86_64.c | 6 +- dlls/ntdll/unix/thread.c | 2 +- dlls/ntdll/unix/unix_private.h | 3 +- 6 files changed, 129 insertions(+), 12 deletions(-) diff --git a/dlls/ntdll/signal_i386.c b/dlls/ntdll/signal_i386.c index 676329c5bd2..594c6f9a1d1 100644 --- a/dlls/ntdll/signal_i386.c +++ b/dlls/ntdll/signal_i386.c @@ -198,7 +198,7 @@ static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context ) /******************************************************************* * KiUserExceptionDispatcher (NTDLL.@) */ -NTSTATUS WINAPI KiUserExceptionDispatcher( EXCEPTION_RECORD *rec, CONTEXT *context ) +NTSTATUS WINAPI dispatch_exception( EXCEPTION_RECORD *rec, CONTEXT *context ) { NTSTATUS status; DWORD c; @@ -243,6 +243,13 @@ NTSTATUS WINAPI KiUserExceptionDispatcher( EXCEPTION_RECORD *rec, CONTEXT *conte return NtRaiseException( rec, context, FALSE ); } +__ASM_STDCALL_FUNC( KiUserExceptionDispatcher, 8, + /* hotpatch prologue. */ + "push %ebp\n\t" + "mov %esp,%ebp\n\t" + "pop %ebp\n\t" + "call " __ASM_NAME("dispatch_exception") "\n\t" + "int3") /*********************************************************************** * save_fpu diff --git a/dlls/ntdll/tests/exception.c b/dlls/ntdll/tests/exception.c index 95d25375f77..a27dee21f00 100644 --- a/dlls/ntdll/tests/exception.c +++ b/dlls/ntdll/tests/exception.c @@ -1660,6 +1660,114 @@ static void test_thread_context(void) #undef COMPARE } +static BYTE saved_KiUserExceptionDispatcher_bytes[7]; +static void *pKiUserExceptionDispatcher; +static BOOL hook_called; +static void *hook_KiUserExceptionDispatcher_eip; +static void *dbg_except_continue_handler_eip; +static void *hook_exception_address; + +static DWORD dbg_except_continue_handler(EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame, + CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher) +{ + ok(hook_called, "Hook was not called.\n"); + got_exception = 1; + dbg_except_continue_handler_eip = (void *)context->Eip; + ++context->Eip; + return ExceptionContinueExecution; +} + +/* Use CDECL to leave arguments on stack. */ +void CDECL hook_KiUserExceptionDispatcher(EXCEPTION_RECORD *rec, CONTEXT *context) +{ + trace("rec %p, context %p.\n", rec, context); + trace("context->Eip %#x, context->Esp %#x, ContextFlags %#x.\n", + context->Eip, context->Esp, context->ContextFlags); + + hook_called = TRUE; + /* Broken on Win2008, probably rec offset in stack is different. */ + ok(rec->ExceptionCode == 0x80000003 || broken(!rec->ExceptionCode), + "Got unexpected ExceptionCode %#x.\n", rec->ExceptionCode); + + hook_KiUserExceptionDispatcher_eip = (void *)context->Eip; + hook_exception_address = rec->ExceptionAddress; + memcpy(pKiUserExceptionDispatcher, saved_KiUserExceptionDispatcher_bytes, + sizeof(saved_KiUserExceptionDispatcher_bytes)); +} + +static void test_kiuserexceptiondispatcher(void) +{ + HMODULE hntdll = GetModuleHandleA("ntdll.dll"); + static const BYTE except_code[] = + { + 0xcc, /* int3 */ + 0xc3, /* ret */ + }; + static BYTE hook_trampoline[] = + { + 0xff, 0x15, + /* offset: 2 bytes */ + 0x00, 0x00, 0x00, 0x00, /* callq *addr */ /* call hook implementation. */ + + 0xff, 0x25, + /* offset: 8 bytes */ + 0x00, 0x00, 0x00, 0x00, /* jmpq *addr */ /* jump to original function. */ + }; + void *phook_KiUserExceptionDispatcher = hook_KiUserExceptionDispatcher; + void *phook_trampoline = hook_trampoline; + DWORD old_protect1, old_protect2; + BYTE *ptr; + BOOL ret; + + pKiUserExceptionDispatcher = (void *)GetProcAddress(hntdll, "KiUserExceptionDispatcher"); + if (!pKiUserExceptionDispatcher) + { + win_skip("KiUserExceptionDispatcher is not available.\n"); + return; + } + + *(unsigned int *)(hook_trampoline + 2) = (ULONG_PTR)&phook_KiUserExceptionDispatcher; + *(unsigned int *)(hook_trampoline + 8) = (ULONG_PTR)&pKiUserExceptionDispatcher; + + ret = VirtualProtect(hook_trampoline, ARRAY_SIZE(hook_trampoline), PAGE_EXECUTE_READWRITE, &old_protect1); + ok(ret, "Got unexpected ret %#x, GetLastError() %u.\n", ret, GetLastError()); + + ret = VirtualProtect(pKiUserExceptionDispatcher, sizeof(saved_KiUserExceptionDispatcher_bytes), + PAGE_EXECUTE_READWRITE, &old_protect2); + ok(ret, "Got unexpected ret %#x, GetLastError() %u.\n", ret, GetLastError()); + + memcpy(saved_KiUserExceptionDispatcher_bytes, pKiUserExceptionDispatcher, + sizeof(saved_KiUserExceptionDispatcher_bytes)); + ptr = (BYTE *)pKiUserExceptionDispatcher; + /* mov hook_trampoline, %eax */ + *ptr++ = 0xa1; + *(void **)ptr = &phook_trampoline; + ptr += sizeof(void *); + /* jmp *eax */ + *ptr++ = 0xff; + *ptr++ = 0xe0; + + got_exception = 0; + run_exception_test(dbg_except_continue_handler, NULL, except_code, ARRAY_SIZE(except_code), + PAGE_EXECUTE_READ); + ok(got_exception, "Handler was not called.\n"); + ok(hook_called, "Hook was not called.\n"); + + ok(hook_exception_address == code_mem || broken(!hook_exception_address) /* Win2008 */, + "Got unexpected exception address %p, expected %p.\n", + hook_exception_address, code_mem); + todo_wine ok(hook_KiUserExceptionDispatcher_eip == code_mem, "Got unexpected exception address %p, expected %p.\n", + hook_KiUserExceptionDispatcher_eip, code_mem); + ok(dbg_except_continue_handler_eip == code_mem, "Got unexpected exception address %p, expected %p.\n", + dbg_except_continue_handler_eip, code_mem); + + ret = VirtualProtect(pKiUserExceptionDispatcher, sizeof(saved_KiUserExceptionDispatcher_bytes), + old_protect2, &old_protect2); + ok(ret, "Got unexpected ret %#x, GetLastError() %u.\n", ret, GetLastError()); + ret = VirtualProtect(hook_trampoline, ARRAY_SIZE(hook_trampoline), old_protect1, &old_protect1); + ok(ret, "Got unexpected ret %#x, GetLastError() %u.\n", ret, GetLastError()); +} + #elif defined(__x86_64__) #define is_wow64 0 @@ -3751,7 +3859,6 @@ START_TEST(exception) test_suspend_thread(); test_suspend_process(); test_unload_trace(); - test_kiuserexceptiondispatcher(); if (pRtlAddFunctionTable && pRtlDeleteFunctionTable && pRtlInstallFunctionTableCallback && pRtlLookupFunctionEntry) test_dynamic_unwind(); @@ -3766,5 +3873,7 @@ START_TEST(exception) #endif + test_kiuserexceptiondispatcher(); + VirtualFree(code_mem, 0, MEM_RELEASE); } diff --git a/dlls/ntdll/unix/signal_i386.c b/dlls/ntdll/unix/signal_i386.c index 730d0b1cb32..d9cbec2c811 100644 --- a/dlls/ntdll/unix/signal_i386.c +++ b/dlls/ntdll/unix/signal_i386.c @@ -428,7 +428,6 @@ static inline int set_thread_area( struct modify_ldt_s *ptr ) /* stack layout when calling an exception raise function */ struct stack_layout { - void *ret_addr; /* return address from raise_generic_exception */ EXCEPTION_RECORD *rec_ptr; /* first arg for raise_generic_exception */ CONTEXT *context_ptr; /* second arg for raise_generic_exception */ CONTEXT context; @@ -1583,15 +1582,14 @@ static void setup_raise_exception( ucontext_t *sigcontext, struct stack_layout * FS_sig(sigcontext) = get_fs(); GS_sig(sigcontext) = get_gs(); SS_sig(sigcontext) = get_ds(); - stack->ret_addr = (void *)0xdeadbabe; /* KiUserExceptionDispatcher must not return */ stack->rec_ptr = &stack->rec; /* arguments for KiUserExceptionDispatcher */ stack->context_ptr = &stack->context; } -void WINAPI call_user_exception_dispatcher( EXCEPTION_RECORD *rec, CONTEXT *context ) -{ - pKiUserExceptionDispatcher( rec, context ); -} +__ASM_GLOBAL_FUNC( call_user_exception_dispatcher, + "add $4,%esp\n\t" + "mov 0x8(%esp),%eax\n\t" + "jmp *%eax") /********************************************************************** * get_fpu_code diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c index cb0fdfb00f1..406a4dacf3c 100644 --- a/dlls/ntdll/unix/signal_x86_64.c +++ b/dlls/ntdll/unix/signal_x86_64.c @@ -1977,15 +1977,17 @@ __ASM_GLOBAL_FUNC( user_exception_dispatcher_trampoline, "movq 0xb0(%rsp),%rdi\n\t" "jmpq *%rdx") -void WINAPI do_call_user_exception_dispatcher(EXCEPTION_RECORD *rec, CONTEXT *context, struct stack_layout *stack) +void WINAPI do_call_user_exception_dispatcher(EXCEPTION_RECORD *rec, CONTEXT *context, + struct stack_layout *stack, void *dispatcher_func) { memmove(&stack->context, context, sizeof(*context)); memcpy(&stack->rec, rec, sizeof(*rec)); - user_exception_dispatcher_trampoline( stack, pKiUserExceptionDispatcher ); + user_exception_dispatcher_trampoline( stack, dispatcher_func ); } __ASM_GLOBAL_FUNC( call_user_exception_dispatcher, + "movq %r8,%r9\n\t" /* dispatcher_func parameter */ "movq 0x98(%rdx),%r8\n\t" /* context->Rsp */ "andq $~0xf,%r8\n\t" "subq $0x630,%r8\n\t" /* sizeof(struct stack_layout) */ diff --git a/dlls/ntdll/unix/thread.c b/dlls/ntdll/unix/thread.c index 686d3991b7d..41d4fe296e6 100644 --- a/dlls/ntdll/unix/thread.c +++ b/dlls/ntdll/unix/thread.c @@ -415,7 +415,7 @@ NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED) NtSetContextThread( GetCurrentThread(), context ); - if (first_chance) call_user_exception_dispatcher( rec, context ); + if (first_chance) call_user_exception_dispatcher( rec, context, pKiUserExceptionDispatcher ); if (rec->ExceptionFlags & EH_STACK_INVALID) ERR("Exception frame is not in stack limits => unable to dispatch exception.\n"); diff --git a/dlls/ntdll/unix/unix_private.h b/dlls/ntdll/unix/unix_private.h index e6c8d5764ed..fbf550c60bd 100644 --- a/dlls/ntdll/unix/unix_private.h +++ b/dlls/ntdll/unix/unix_private.h @@ -241,7 +241,8 @@ extern void init_cpu_info(void) DECLSPEC_HIDDEN; extern void dbg_init(void) DECLSPEC_HIDDEN; -extern void WINAPI call_user_exception_dispatcher(EXCEPTION_RECORD *rec, CONTEXT *context) DECLSPEC_HIDDEN; +extern void WINAPI call_user_exception_dispatcher(EXCEPTION_RECORD *rec, CONTEXT *context, + void *dispatcher_func) DECLSPEC_HIDDEN; #define TICKSPERSEC 10000000 #define SECS_1601_TO_1970 ((369 * 365 + 89) * (ULONGLONG)86400) -- 2.26.2

1 1

[PATCH v2 1/2] ntdll: Fix KiUserExceptionDispatcher ABI on x86.
by Paul Gofman July 3, 2020

July 3, 2020

Signed-off-by: Paul Gofman <pgofman(a)codeweavers.com> --- v2: - Use __ASM_STDCALL_FUNC instead of coding linker name; - Use helper function to get KiUserDispactherAddress to properly handle PIC. dlls/ntdll/signal_i386.c | 9 ++- dlls/ntdll/tests/exception.c | 111 +++++++++++++++++++++++++++++++++- dlls/ntdll/unix/signal_i386.c | 11 ++-- 3 files changed, 125 insertions(+), 6 deletions(-) diff --git a/dlls/ntdll/signal_i386.c b/dlls/ntdll/signal_i386.c index 676329c5bd2..594c6f9a1d1 100644 --- a/dlls/ntdll/signal_i386.c +++ b/dlls/ntdll/signal_i386.c @@ -198,7 +198,7 @@ static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context ) /******************************************************************* * KiUserExceptionDispatcher (NTDLL.@) */ -NTSTATUS WINAPI KiUserExceptionDispatcher( EXCEPTION_RECORD *rec, CONTEXT *context ) +NTSTATUS WINAPI dispatch_exception( EXCEPTION_RECORD *rec, CONTEXT *context ) { NTSTATUS status; DWORD c; @@ -243,6 +243,13 @@ NTSTATUS WINAPI KiUserExceptionDispatcher( EXCEPTION_RECORD *rec, CONTEXT *conte return NtRaiseException( rec, context, FALSE ); } +__ASM_STDCALL_FUNC( KiUserExceptionDispatcher, 8, + /* hotpatch prologue. */ + "push %ebp\n\t" + "mov %esp,%ebp\n\t" + "pop %ebp\n\t" + "call " __ASM_NAME("dispatch_exception") "\n\t" + "int3") /*********************************************************************** * save_fpu diff --git a/dlls/ntdll/tests/exception.c b/dlls/ntdll/tests/exception.c index 95d25375f77..a27dee21f00 100644 --- a/dlls/ntdll/tests/exception.c +++ b/dlls/ntdll/tests/exception.c @@ -1660,6 +1660,114 @@ static void test_thread_context(void) #undef COMPARE } +static BYTE saved_KiUserExceptionDispatcher_bytes[7]; +static void *pKiUserExceptionDispatcher; +static BOOL hook_called; +static void *hook_KiUserExceptionDispatcher_eip; +static void *dbg_except_continue_handler_eip; +static void *hook_exception_address; + +static DWORD dbg_except_continue_handler(EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame, + CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher) +{ + ok(hook_called, "Hook was not called.\n"); + got_exception = 1; + dbg_except_continue_handler_eip = (void *)context->Eip; + ++context->Eip; + return ExceptionContinueExecution; +} + +/* Use CDECL to leave arguments on stack. */ +void CDECL hook_KiUserExceptionDispatcher(EXCEPTION_RECORD *rec, CONTEXT *context) +{ + trace("rec %p, context %p.\n", rec, context); + trace("context->Eip %#x, context->Esp %#x, ContextFlags %#x.\n", + context->Eip, context->Esp, context->ContextFlags); + + hook_called = TRUE; + /* Broken on Win2008, probably rec offset in stack is different. */ + ok(rec->ExceptionCode == 0x80000003 || broken(!rec->ExceptionCode), + "Got unexpected ExceptionCode %#x.\n", rec->ExceptionCode); + + hook_KiUserExceptionDispatcher_eip = (void *)context->Eip; + hook_exception_address = rec->ExceptionAddress; + memcpy(pKiUserExceptionDispatcher, saved_KiUserExceptionDispatcher_bytes, + sizeof(saved_KiUserExceptionDispatcher_bytes)); +} + +static void test_kiuserexceptiondispatcher(void) +{ + HMODULE hntdll = GetModuleHandleA("ntdll.dll"); + static const BYTE except_code[] = + { + 0xcc, /* int3 */ + 0xc3, /* ret */ + }; + static BYTE hook_trampoline[] = + { + 0xff, 0x15, + /* offset: 2 bytes */ + 0x00, 0x00, 0x00, 0x00, /* callq *addr */ /* call hook implementation. */ + + 0xff, 0x25, + /* offset: 8 bytes */ + 0x00, 0x00, 0x00, 0x00, /* jmpq *addr */ /* jump to original function. */ + }; + void *phook_KiUserExceptionDispatcher = hook_KiUserExceptionDispatcher; + void *phook_trampoline = hook_trampoline; + DWORD old_protect1, old_protect2; + BYTE *ptr; + BOOL ret; + + pKiUserExceptionDispatcher = (void *)GetProcAddress(hntdll, "KiUserExceptionDispatcher"); + if (!pKiUserExceptionDispatcher) + { + win_skip("KiUserExceptionDispatcher is not available.\n"); + return; + } + + *(unsigned int *)(hook_trampoline + 2) = (ULONG_PTR)&phook_KiUserExceptionDispatcher; + *(unsigned int *)(hook_trampoline + 8) = (ULONG_PTR)&pKiUserExceptionDispatcher; + + ret = VirtualProtect(hook_trampoline, ARRAY_SIZE(hook_trampoline), PAGE_EXECUTE_READWRITE, &old_protect1); + ok(ret, "Got unexpected ret %#x, GetLastError() %u.\n", ret, GetLastError()); + + ret = VirtualProtect(pKiUserExceptionDispatcher, sizeof(saved_KiUserExceptionDispatcher_bytes), + PAGE_EXECUTE_READWRITE, &old_protect2); + ok(ret, "Got unexpected ret %#x, GetLastError() %u.\n", ret, GetLastError()); + + memcpy(saved_KiUserExceptionDispatcher_bytes, pKiUserExceptionDispatcher, + sizeof(saved_KiUserExceptionDispatcher_bytes)); + ptr = (BYTE *)pKiUserExceptionDispatcher; + /* mov hook_trampoline, %eax */ + *ptr++ = 0xa1; + *(void **)ptr = &phook_trampoline; + ptr += sizeof(void *); + /* jmp *eax */ + *ptr++ = 0xff; + *ptr++ = 0xe0; + + got_exception = 0; + run_exception_test(dbg_except_continue_handler, NULL, except_code, ARRAY_SIZE(except_code), + PAGE_EXECUTE_READ); + ok(got_exception, "Handler was not called.\n"); + ok(hook_called, "Hook was not called.\n"); + + ok(hook_exception_address == code_mem || broken(!hook_exception_address) /* Win2008 */, + "Got unexpected exception address %p, expected %p.\n", + hook_exception_address, code_mem); + todo_wine ok(hook_KiUserExceptionDispatcher_eip == code_mem, "Got unexpected exception address %p, expected %p.\n", + hook_KiUserExceptionDispatcher_eip, code_mem); + ok(dbg_except_continue_handler_eip == code_mem, "Got unexpected exception address %p, expected %p.\n", + dbg_except_continue_handler_eip, code_mem); + + ret = VirtualProtect(pKiUserExceptionDispatcher, sizeof(saved_KiUserExceptionDispatcher_bytes), + old_protect2, &old_protect2); + ok(ret, "Got unexpected ret %#x, GetLastError() %u.\n", ret, GetLastError()); + ret = VirtualProtect(hook_trampoline, ARRAY_SIZE(hook_trampoline), old_protect1, &old_protect1); + ok(ret, "Got unexpected ret %#x, GetLastError() %u.\n", ret, GetLastError()); +} + #elif defined(__x86_64__) #define is_wow64 0 @@ -3751,7 +3859,6 @@ START_TEST(exception) test_suspend_thread(); test_suspend_process(); test_unload_trace(); - test_kiuserexceptiondispatcher(); if (pRtlAddFunctionTable && pRtlDeleteFunctionTable && pRtlInstallFunctionTableCallback && pRtlLookupFunctionEntry) test_dynamic_unwind(); @@ -3766,5 +3873,7 @@ START_TEST(exception) #endif + test_kiuserexceptiondispatcher(); + VirtualFree(code_mem, 0, MEM_RELEASE); } diff --git a/dlls/ntdll/unix/signal_i386.c b/dlls/ntdll/unix/signal_i386.c index 730d0b1cb32..46fc1df43f6 100644 --- a/dlls/ntdll/unix/signal_i386.c +++ b/dlls/ntdll/unix/signal_i386.c @@ -428,7 +428,6 @@ static inline int set_thread_area( struct modify_ldt_s *ptr ) /* stack layout when calling an exception raise function */ struct stack_layout { - void *ret_addr; /* return address from raise_generic_exception */ EXCEPTION_RECORD *rec_ptr; /* first arg for raise_generic_exception */ CONTEXT *context_ptr; /* second arg for raise_generic_exception */ CONTEXT context; @@ -1583,16 +1582,20 @@ static void setup_raise_exception( ucontext_t *sigcontext, struct stack_layout * FS_sig(sigcontext) = get_fs(); GS_sig(sigcontext) = get_gs(); SS_sig(sigcontext) = get_ds(); - stack->ret_addr = (void *)0xdeadbabe; /* KiUserExceptionDispatcher must not return */ stack->rec_ptr = &stack->rec; /* arguments for KiUserExceptionDispatcher */ stack->context_ptr = &stack->context; } -void WINAPI call_user_exception_dispatcher( EXCEPTION_RECORD *rec, CONTEXT *context ) +void *get_KiUserExceptionDispatcher_address(void) { - pKiUserExceptionDispatcher( rec, context ); + return pKiUserExceptionDispatcher; } +__ASM_GLOBAL_FUNC( call_user_exception_dispatcher, + "add $4,%esp\n\t" + "call " __ASM_NAME("get_KiUserExceptionDispatcher_address") "\n\t" + "jmp *%eax") + /********************************************************************** * get_fpu_code * -- 2.26.2

3 3

[PATCH v2 1/3] ntdll: Reimplement NtQuerySystemInformation(SystemProcessInformation) using a single server call.
by Zebediah Figura July 3, 2020

July 3, 2020

Signed-off-by: Zebediah Figura <zfigura(a)codeweavers.com> --- v2: Properly align variables (thanks Alexandre); adjust variable names a bit. This decreases CPU usage by wineserver from about 65% to about 45% for me in Street Fighter V, which for some reason calls this 15-20 times per second. dlls/ntdll/unix/system.c | 182 +++++++++++++++++---------------------- server/process.c | 68 +++++++++++++++ server/protocol.def | 30 +++++++ server/trace.c | 39 +++++++++ 4 files changed, 215 insertions(+), 104 deletions(-) diff --git a/dlls/ntdll/unix/system.c b/dlls/ntdll/unix/system.c index 7045bc1550b..3a53a764d03 100644 --- a/dlls/ntdll/unix/system.c +++ b/dlls/ntdll/unix/system.c @@ -1998,6 +1998,11 @@ static void get_timezone_info( RTL_DYNAMIC_TIME_ZONE_INFORMATION *tzi ) RtlLeaveCriticalSection( &TIME_tz_section ); } +static unsigned int align_offset(unsigned int offset, unsigned int alignment) +{ + return (offset + (alignment - 1)) & ~(alignment - 1); +} + /****************************************************************************** * NtQuerySystemInformation (NTDLL.@) @@ -2083,132 +2088,101 @@ NTSTATUS WINAPI NtQuerySystemInformation( SYSTEM_INFORMATION_CLASS class, case SystemProcessInformation: { - SYSTEM_PROCESS_INFORMATION *spi = info; - SYSTEM_PROCESS_INFORMATION *last = NULL; - HANDLE handle = 0; - WCHAR procname[1024]; - WCHAR* exename; - DWORD wlen = 0; - DWORD procstructlen = 0; + unsigned int process_count, i, j; + char *buffer = NULL; + unsigned int pos = 0; - SERVER_START_REQ( create_snapshot ) + if (size && !(buffer = RtlAllocateHeap( GetProcessHeap(), 0, size ))) { - req->flags = SNAP_PROCESS | SNAP_THREAD; - if (!(ret = wine_server_call( req ))) handle = wine_server_ptr_handle( reply->handle ); + ret = STATUS_NO_MEMORY; + break; } - SERVER_END_REQ; - len = 0; - while (ret == STATUS_SUCCESS) + SERVER_START_REQ( list_processes ) { - int unix_pid = -1; - SERVER_START_REQ( next_process ) - { - req->handle = wine_server_obj_handle( handle ); - req->reset = (len == 0); - wine_server_set_reply( req, procname, sizeof(procname) - sizeof(WCHAR) ); - if (!(ret = wine_server_call( req ))) - { - unix_pid = reply->unix_pid; - - /* Make sure procname is 0 terminated */ - procname[wine_server_reply_size(reply) / sizeof(WCHAR)] = 0; - - /* Get only the executable name, not the path */ - if ((exename = wcsrchr(procname, '\\')) != NULL) exename++; - else exename = procname; + wine_server_set_reply( req, buffer, size ); + ret = wine_server_call( req ); + len = reply->info_size; + process_count = reply->process_count; + } + SERVER_END_REQ; - wlen = (wcslen(exename) + 1) * sizeof(WCHAR); - procstructlen = sizeof(*spi) + wlen + ((reply->threads - 1) * sizeof(SYSTEM_THREAD_INFORMATION)); + if (ret) + { + RtlFreeHeap( GetProcessHeap(), 0, buffer ); + break; + } - if (size >= len + procstructlen) - { - /* ftCreationTime, ftUserTime, ftKernelTime; - * vmCounters, ioCounters - */ - memset(spi, 0, sizeof(*spi)); + len = 0; - spi->NextEntryOffset = procstructlen - wlen; - spi->dwThreadCount = reply->threads; + for (i = 0; i < process_count; i++) + { + SYSTEM_PROCESS_INFORMATION *nt_process = (SYSTEM_PROCESS_INFORMATION *)((char *)info + len); + const struct process_info *server_process; + const WCHAR *server_name, *file_part; + ULONG proc_len; + ULONG name_len = 0; - /* spi->pszProcessName will be set later on */ + pos = align_offset( pos, TYPE_ALIGNMENT(struct process_info) ); + server_process = (const struct process_info *)(buffer + pos); + pos += sizeof(*server_process); - spi->dwBasePriority = reply->priority; - spi->UniqueProcessId = UlongToHandle(reply->pid); - spi->ParentProcessId = UlongToHandle(reply->ppid); - spi->HandleCount = reply->handles; + server_name = (const WCHAR *)(buffer + pos); + file_part = server_name + (server_process->name_len / sizeof(WCHAR)); + pos += server_process->name_len; + while (file_part > server_name && file_part[-1] != '\\') + { + file_part--; + name_len++; + } - /* spi->ti will be set later on */ + proc_len = sizeof(*nt_process) + server_process->thread_count * sizeof(SYSTEM_THREAD_INFORMATION) + + (name_len + 1) * sizeof(WCHAR); + len += proc_len; - } - len += procstructlen; - } - } - SERVER_END_REQ; - if (ret != STATUS_SUCCESS) + if (len <= size) { - if (ret == STATUS_NO_MORE_FILES) ret = STATUS_SUCCESS; - break; + memset(nt_process, 0, sizeof(*nt_process)); + if (i < process_count - 1) + nt_process->NextEntryOffset = proc_len; + nt_process->dwThreadCount = server_process->thread_count; + nt_process->dwBasePriority = server_process->priority; + nt_process->UniqueProcessId = UlongToHandle(server_process->pid); + nt_process->ParentProcessId = UlongToHandle(server_process->parent_pid); + nt_process->HandleCount = server_process->handle_count; + get_thread_times( server_process->unix_pid, -1, &nt_process->KernelTime, &nt_process->UserTime ); } - if (size >= len) + pos = align_offset( pos, TYPE_ALIGNMENT(struct thread_info) ); + for (j = 0; j < server_process->thread_count; j++) { - int i, j; + const struct thread_info *server_thread = (const struct thread_info *)(buffer + pos); - get_thread_times(unix_pid, -1, &spi->KernelTime, &spi->UserTime); - - /* set thread info */ - i = j = 0; - while (ret == STATUS_SUCCESS) + if (len <= size) { - int unix_tid, pid, tid, base_pri, delta_pri; - SERVER_START_REQ( next_thread ) - { - req->handle = wine_server_obj_handle( handle ); - req->reset = (j == 0); - if (!(ret = wine_server_call( req ))) - { - unix_tid = reply->unix_tid; - pid = reply->pid; - tid = reply->tid; - base_pri = reply->base_pri; - delta_pri = reply->delta_pri; - j++; - } - } - SERVER_END_REQ; - - if (!ret) - { - if (UlongToHandle(pid) == spi->UniqueProcessId) - { - memset(&spi->ti[i], 0, sizeof(spi->ti)); - - spi->ti[i].CreateTime.QuadPart = 0xdeadbeef; - spi->ti[i].ClientId.UniqueProcess = UlongToHandle(pid); - spi->ti[i].ClientId.UniqueThread = UlongToHandle(tid); - spi->ti[i].dwCurrentPriority = base_pri + delta_pri; - spi->ti[i].dwBasePriority = base_pri; - get_thread_times(unix_pid, unix_tid, &spi->ti[i].KernelTime, &spi->ti[i].UserTime); - i++; - } - } + nt_process->ti[j].CreateTime.QuadPart = 0xdeadbeef; + nt_process->ti[j].ClientId.UniqueProcess = UlongToHandle(server_process->pid); + nt_process->ti[j].ClientId.UniqueThread = UlongToHandle(server_thread->tid); + nt_process->ti[j].dwCurrentPriority = server_thread->current_priority; + nt_process->ti[j].dwBasePriority = server_thread->base_priority; + get_thread_times( server_process->unix_pid, server_thread->unix_tid, + &nt_process->ti[j].KernelTime, &nt_process->ti[j].UserTime ); } - if (ret == STATUS_NO_MORE_FILES) ret = STATUS_SUCCESS; - - /* now append process name */ - spi->ProcessName.Buffer = (WCHAR*)((char*)spi + spi->NextEntryOffset); - spi->ProcessName.Length = wlen - sizeof(WCHAR); - spi->ProcessName.MaximumLength = wlen; - memcpy( spi->ProcessName.Buffer, exename, wlen ); - spi->NextEntryOffset += wlen; - last = spi; - spi = (SYSTEM_PROCESS_INFORMATION*)((char*)spi + spi->NextEntryOffset); + + pos += sizeof(*server_thread); + } + + if (len <= size) + { + nt_process->ProcessName.Buffer = (WCHAR *)&nt_process->ti[server_process->thread_count]; + nt_process->ProcessName.Length = name_len * sizeof(WCHAR); + nt_process->ProcessName.MaximumLength = (name_len + 1) * sizeof(WCHAR); + memcpy(nt_process->ProcessName.Buffer, file_part, name_len * sizeof(WCHAR)); + nt_process->ProcessName.Buffer[name_len] = 0; } } - if (ret == STATUS_SUCCESS && last) last->NextEntryOffset = 0; + if (len > size) ret = STATUS_INFO_LENGTH_MISMATCH; - if (handle) NtClose( handle ); break; } diff --git a/server/process.c b/server/process.c index 283edc09c5e..6b9557ceb60 100644 --- a/server/process.c +++ b/server/process.c @@ -22,6 +22,7 @@ #include "wine/port.h" #include <assert.h> +#include <errno.h> #include <limits.h> #include <signal.h> #include <string.h> @@ -1819,3 +1820,70 @@ DECL_HANDLER(resume_process) release_object( process ); } } + +static unsigned int align_offset(unsigned int offset, unsigned int alignment) +{ + return (offset + (alignment - 1)) & ~(alignment - 1); +} + +/* Get a list of processes and threads currently running */ +DECL_HANDLER(list_processes) +{ + struct process *process; + struct thread *thread; + unsigned int pos = 0; + char *buffer; + + reply->process_count = 0; + reply->info_size = 0; + + LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry ) + { + struct process_dll *exe = get_process_exe_module( process ); + reply->info_size = align_offset( reply->info_size, TYPE_ALIGNMENT(struct process_info) ); + reply->info_size += sizeof(struct process_info) + exe->namelen; + reply->info_size = align_offset( reply->info_size, TYPE_ALIGNMENT(struct thread_info) ); + reply->info_size += process->running_threads * sizeof(struct thread_info); + reply->process_count++; + } + + if (reply->info_size > get_reply_max_size()) + { + set_error( STATUS_INFO_LENGTH_MISMATCH ); + return; + } + + if (!(buffer = set_reply_data_size( reply->info_size ))) return; + + LIST_FOR_EACH_ENTRY( process, &process_list, struct process, entry ) + { + struct process_info *process_info; + struct process_dll *exe = get_process_exe_module( process ); + + pos = align_offset( pos, TYPE_ALIGNMENT(struct process_info) ); + process_info = (struct process_info *)(buffer + pos); + process_info->name_len = exe->namelen; + process_info->thread_count = process->running_threads; + process_info->priority = process->priority; + process_info->pid = process->id; + process_info->parent_pid = process->parent_id; + process_info->handle_count = get_handle_table_count(process); + process_info->unix_pid = process->unix_pid; + pos += sizeof(*process_info); + + memcpy( buffer + pos, exe->filename, exe->namelen ); + pos += exe->namelen; + + pos = align_offset( pos, TYPE_ALIGNMENT(struct thread_info) ); + LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry ) + { + struct thread_info *thread_info = (struct thread_info *)(buffer + pos); + + thread_info->tid = thread->id; + thread_info->base_priority = thread->priority; + thread_info->current_priority = thread->priority; /* FIXME */ + thread_info->unix_tid = thread->unix_tid; + pos += sizeof(*thread_info); + } + } +} diff --git a/server/protocol.def b/server/protocol.def index 6416306c0a1..2737cd6fddd 100644 --- a/server/protocol.def +++ b/server/protocol.def @@ -1919,6 +1919,36 @@ enum char_info_mode @END +struct thread_info +{ + thread_id_t tid; + int base_priority; + int current_priority; + int unix_tid; +}; + +struct process_info +{ + data_size_t name_len; + unsigned int thread_count; + int priority; + process_id_t pid; + process_id_t parent_pid; + unsigned int handle_count; + int unix_pid; + /* VARARG(name,unicode_str,name_len); */ + /* VARARG(threads,struct thread_info,thread_count); */ +}; + +/* Get a list of processes and threads currently running */ +(a)REQ(list_processes) +(a)REPLY + data_size_t info_size; + unsigned int process_count; + VARARG(data,process_info,info_size); +(a)END + + /* Wait for a debug event */ @REQ(wait_debug_event) int get_handle; /* should we alloc a handle for waiting? */ diff --git a/server/trace.c b/server/trace.c index 2fb5afd5ef1..d47e1260255 100644 --- a/server/trace.c +++ b/server/trace.c @@ -1115,6 +1115,45 @@ static void dump_varargs_token_groups( const char *prefix, data_size_t size ) fputc( '}', stderr ); } +static unsigned int align_offset(unsigned int offset, unsigned int alignment) +{ + return (offset + (alignment - 1)) & ~(alignment - 1); +} + +static void dump_varargs_process_info( const char *prefix, data_size_t size ) +{ + data_size_t pos = 0; + unsigned int i; + + fprintf( stderr,"%s{", prefix ); + + while (size - pos >= sizeof(struct process_info)) + { + const struct process_info *process = (const struct process_info *)((const char *)cur_data + pos); + pos = align_offset( pos, TYPE_ALIGNMENT(struct process_info) ); + fprintf( stderr, "[thread_count=%u,priority=%d,pid=%04x,parent_pid=%04x,handle_count=%08x,unix_pid=%d,", + process->thread_count, process->priority, process->pid, + process->parent_pid, process->handle_count, process->unix_pid ); + pos += sizeof(*process); + + pos = dump_inline_unicode_string( "name=L\"", pos, process->name_len, size ); + + pos = align_offset( pos, TYPE_ALIGNMENT(struct thread_info) ); + fprintf( stderr, "\",threads={" ); + for (i = 0; i < process->thread_count; i++) + { + const struct thread_info *thread = (const struct thread_info *)((const char *)cur_data + pos); + if (size - pos < sizeof(*thread)) break; + fprintf( stderr, "[tid=%04x,base_priority=%d,current_priority=%d,unix_tid=%d],", + thread->tid, thread->base_priority, thread->current_priority, thread->unix_tid ); + pos += sizeof(*thread); + } + fprintf( stderr, "}," ); + } + + fputc( '}', stderr ); +} + static void dump_varargs_object_attributes( const char *prefix, data_size_t size ) { const struct object_attributes *objattr = cur_data; -- 2.27.0

2 3

Re: [PATCH] ntdll: Initialize StatusWord and TagWord in i386 init_thread_context.
by Jefferson Carpenter July 3, 2020

July 3, 2020

This does not resolve the bug, but moves toward resolving it. I have not been able to get a consistent read on what to initialize the remaining members to. Thanks, Jefferson

2 3

[PATCH v2 1/6] user32/tests: Add basic GetRegisteredRawInputDevices tests.
by Rémi Bernon July 3, 2020

July 3, 2020

There's already some in dinput, but this is a more appropriate location. Signed-off-by: Rémi Bernon <rbernon(a)codeweavers.com> --- dlls/user32/tests/input.c | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/dlls/user32/tests/input.c b/dlls/user32/tests/input.c index bab0fd97536..52fd31501f8 100644 --- a/dlls/user32/tests/input.c +++ b/dlls/user32/tests/input.c @@ -1765,6 +1765,7 @@ static void test_RegisterRawInputDevices(void) { HWND hwnd; RAWINPUTDEVICE raw_devices[1]; + UINT count, raw_devices_count; BOOL res; raw_devices[0].usUsagePage = 0x01; @@ -1791,6 +1792,42 @@ static void test_RegisterRawInputDevices(void) ok(res == TRUE, "RegisterRawInputDevices failed\n"); ok(GetLastError() == 0xdeadbeef, "RegisterRawInputDevices returned %08x\n", GetLastError()); + SetLastError(0xdeadbeef); + count = GetRegisteredRawInputDevices(NULL, NULL, 0); + todo_wine + ok(count == ~0U, "GetRegisteredRawInputDevices returned %u\n", count); + todo_wine + ok(GetLastError() == ERROR_INVALID_PARAMETER, "GetRegisteredRawInputDevices unexpected error %08x\n", GetLastError()); + + SetLastError(0xdeadbeef); + raw_devices_count = 0; + count = GetRegisteredRawInputDevices(NULL, &raw_devices_count, 0); + todo_wine + ok(count == ~0U, "GetRegisteredRawInputDevices returned %u\n", count); + ok(raw_devices_count == 0, "Unexpected registered devices count: %u\n", raw_devices_count); + todo_wine + ok(GetLastError() == ERROR_INVALID_PARAMETER, "GetRegisteredRawInputDevices unexpected error %08x\n", GetLastError()); + + SetLastError(0xdeadbeef); + raw_devices_count = 0; + count = GetRegisteredRawInputDevices(NULL, &raw_devices_count, sizeof(RAWINPUTDEVICE)); + ok(count == 0, "GetRegisteredRawInputDevices returned %u\n", count); + todo_wine + ok(raw_devices_count == 1, "Unexpected registered devices count: %u\n", raw_devices_count); + ok(GetLastError() == 0xdeadbeef, "GetRegisteredRawInputDevices unexpected error %08x\n", GetLastError()); + + SetLastError(0xdeadbeef); + memset(raw_devices, 0, sizeof(raw_devices)); + raw_devices_count = ARRAY_SIZE(raw_devices); + count = GetRegisteredRawInputDevices(raw_devices, &raw_devices_count, sizeof(RAWINPUTDEVICE)); + todo_wine + ok(count == 1, "GetRegisteredRawInputDevices returned %u\n", count); + ok(raw_devices_count == 1, "Unexpected registered devices count: %u\n", raw_devices_count); + ok(GetLastError() == 0xdeadbeef, "GetRegisteredRawInputDevices unexpected error %08x\n", GetLastError()); + todo_wine + ok(raw_devices[0].usUsagePage == 0x01, "Unexpected usage page: %x\n", raw_devices[0].usUsagePage); + todo_wine + ok(raw_devices[0].usUsage == 0x05, "Unexpected usage: %x\n", raw_devices[0].usUsage); /* RIDEV_REMOVE requires hwndTarget == NULL */ raw_devices[0].dwFlags = RIDEV_REMOVE; -- 2.27.0

2 6

[RFC] Trying to fix desktop switches
by Rafał Mużyło July 3, 2020

July 3, 2020

This is yet another attempt at fixing the way wine handles X11 wm desktop switches. Currently, wine minimizes the windows on switch away, then restores them. That's the wrong thing to do. For example, that unpauses apps that pause on focus loss. First part of the problem is quite simple. Adding a check for NET_WM_STATE_HIDDEN and returning early if it's not set while the wmstate is iconic deals with that. The other part is a pain though. As the windows on other desktops are invisible, they shouldn't be considered valid input sinks by wine. The problem is two-fold: - can_activate_window is a static function both in winex11.drv and user32.dll; what's more one in user32.dll doesn't handle WS_EX_NOACTIVATE the way one in winex11.drv does - x11drv_win_data is (for obvious reasons) an internal detail of winex11.drv As such, it's hard to come up with something that would reach user32.dll and didn't have some nasty side effects. I'm trying to use WS_EX_NOACTIVATE in this version, but (as already mentioned) that isn't working with user32.dll *and* has some undesirable side-effects. Trying to use either WS_VISIBLE or WS_DISABLED doesn't work at all or at least I'm not able to use that properly. So, better ideas welcomed.

1 0

[PATCH] kernel32: Catch process creation breakpoint exceptions.
by Rémi Bernon July 3, 2020

July 3, 2020

Metal Gear Solid V: Ground Zeroes attaches itself and continues this specific breakpoint with DBG_EXCEPTION_NOT_HANDLED. It crashes the child process and the game terminates. It is correct for old Windows versions, but more recent versions are apparently catching exceptions here, and the process should continue. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=44127 Signed-off-by: Rémi Bernon <rbernon(a)codeweavers.com> --- dlls/kernel32/process.c | 9 +++++++++ dlls/kernel32/tests/debugger.c | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+) diff --git a/dlls/kernel32/process.c b/dlls/kernel32/process.c index 8f506fcf132..cfc11c867ae 100644 --- a/dlls/kernel32/process.c +++ b/dlls/kernel32/process.c @@ -155,6 +155,15 @@ void CDECL __wine_start_process( LPTHREAD_START_ROUTINE entry, PEB *peb ) SetLastError( 0 ); /* clear error code */ if (being_debugged) DbgBreakPoint(); + } + __EXCEPT_ALL + { + /* do nothing */ + } + __ENDTRY + + __TRY + { ExitThread( call_process_entry( peb, entry )); } __EXCEPT(UnhandledExceptionFilter) diff --git a/dlls/kernel32/tests/debugger.c b/dlls/kernel32/tests/debugger.c index 33e18d82e62..0a43fe91e64 100644 --- a/dlls/kernel32/tests/debugger.c +++ b/dlls/kernel32/tests/debugger.c @@ -1062,15 +1062,46 @@ static void test_debug_children(const char *name, DWORD flag, BOOL debug_child, if (flag) { + DWORD last_thread; + next_event(&ctx, WAIT_EVENT_TIMEOUT); ok(ctx.ev.dwDebugEventCode == CREATE_PROCESS_DEBUG_EVENT, "dwDebugEventCode = %d\n", ctx.ev.dwDebugEventCode); ok(ctx.pid == pi.dwProcessId, "unexpected dwProcessId %x\n", ctx.ev.dwProcessId == ctx.pid); next_event(&ctx, WAIT_EVENT_TIMEOUT); ok(ctx.ev.dwDebugEventCode == LOAD_DLL_DEBUG_EVENT, "dwDebugEventCode = %d\n", ctx.ev.dwDebugEventCode); + last_thread = ctx.ev.dwThreadId; wait_for_breakpoint(&ctx); ok(ctx.dll_cnt > 2, "dll_cnt = %d\n", ctx.dll_cnt); + + ok(ctx.ev.dwDebugEventCode == EXCEPTION_DEBUG_EVENT, "dwDebugEventCode = %d\n", ctx.ev.dwDebugEventCode); + ok(ctx.ev.dwThreadId == last_thread, "unexpected thread\n"); + ok(ctx.ev.u.Exception.ExceptionRecord.ExceptionCode == EXCEPTION_BREAKPOINT, "ExceptionCode = %x\n", + ctx.ev.u.Exception.ExceptionRecord.ExceptionCode); + + /* Except for wxppro and w2008, the initial breakpoint is now somewhere else, possibly within LdrInitShimEngineDynamic, + * It's also catching exceptions and ContinueDebugEvent(DBG_EXCEPTION_NOT_HANDLED) should not crash the child now */ + if (broken(ctx.ev.u.Exception.ExceptionRecord.ExceptionAddress == pDbgBreakPoint)) + { + win_skip("Ignoring initial breakpoint address check\n"); + pass_exception = FALSE; + } + else + { + todo_wine + ok(ctx.ev.u.Exception.ExceptionRecord.ExceptionAddress != pDbgBreakPoint, "ExceptionAddress == pDbgBreakPoint\n"); + } + + if (pass_exception) + { + ret = ContinueDebugEvent(ctx.ev.dwProcessId, ctx.ev.dwThreadId, DBG_EXCEPTION_NOT_HANDLED); + ok(ret, "ContinueDebugEvent failed, last error %d.\n", GetLastError()); + ctx.ev.dwDebugEventCode = -1; + + next_event(&ctx, WAIT_EVENT_TIMEOUT); + ok(ctx.ev.dwDebugEventCode != EXCEPTION_DEBUG_EVENT, "dwDebugEventCode = %d\n", ctx.ev.dwDebugEventCode); + } } else { @@ -1713,6 +1744,7 @@ START_TEST(debugger) test_debug_children(myARGV[0], DEBUG_PROCESS|DEBUG_ONLY_THIS_PROCESS, FALSE, FALSE); test_debug_children(myARGV[0], 0, FALSE, FALSE); test_debug_children(myARGV[0], 0, FALSE, TRUE); + test_debug_children(myARGV[0], DEBUG_ONLY_THIS_PROCESS, FALSE, TRUE); test_debugger(myARGV[0]); } } -- 2.27.0

2 1

[PATCH] msvcrt: Don't set MXCSR in _control87.
by Myah Caron July 3, 2020

July 3, 2020

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=27594 Signed-off-by: Myah Caron <qsniyg(a)protonmail.com> --- This appears to match native MSVCRT's behavior, at least the one provided by vcrun6. I'm not sure if the style is correct (the helper being directly below the __control87_2 comment). --- dlls/msvcrt/math.c | 61 +++++++++++++++++++++++++++++----------------- 1 file changed, 38 insertions(+), 23 deletions(-) diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c index eae917076f..7ad79a07e5 100644 --- a/dlls/msvcrt/math.c +++ b/dlls/msvcrt/math.c @@ -1101,6 +1101,41 @@ double CDECL MSVCRT__chgsign(double num) * Not exported by native msvcrt, added in msvcr80. */ #ifdef __i386__ +static unsigned int get_flags_from_mxcsr(void) { +#ifdef __GNUC__ + unsigned long fpword; + unsigned int flags; + + __asm__ __volatile__( "stmxcsr %0" : "=m" (fpword) ); + + /* Convert into mask constants */ + flags = 0; + if (fpword & 0x80) flags |= MSVCRT__EM_INVALID; + if (fpword & 0x100) flags |= MSVCRT__EM_DENORMAL; + if (fpword & 0x200) flags |= MSVCRT__EM_ZERODIVIDE; + if (fpword & 0x400) flags |= MSVCRT__EM_OVERFLOW; + if (fpword & 0x800) flags |= MSVCRT__EM_UNDERFLOW; + if (fpword & 0x1000) flags |= MSVCRT__EM_INEXACT; + switch (fpword & 0x6000) + { + case 0x6000: flags |= MSVCRT__RC_UP|MSVCRT__RC_DOWN; break; + case 0x4000: flags |= MSVCRT__RC_UP; break; + case 0x2000: flags |= MSVCRT__RC_DOWN; break; + } + switch (fpword & 0x8040) + { + case 0x0040: flags |= MSVCRT__DN_FLUSH_OPERANDS_SAVE_RESULTS; break; + case 0x8000: flags |= MSVCRT__DN_SAVE_OPERANDS_FLUSH_RESULTS; break; + case 0x8040: flags |= MSVCRT__DN_FLUSH; break; + } + + return flags; +#else + FIXME( "not implemented\n" ); + return 0; +#endif +} + int CDECL __control87_2( unsigned int newval, unsigned int mask, unsigned int *x86_cw, unsigned int *sse2_cw ) { @@ -1170,28 +1205,7 @@ int CDECL __control87_2( unsigned int newval, unsigned int mask, if (sse2_supported) { - __asm__ __volatile__( "stmxcsr %0" : "=m" (fpword) ); - - /* Convert into mask constants */ - flags = 0; - if (fpword & 0x80) flags |= MSVCRT__EM_INVALID; - if (fpword & 0x100) flags |= MSVCRT__EM_DENORMAL; - if (fpword & 0x200) flags |= MSVCRT__EM_ZERODIVIDE; - if (fpword & 0x400) flags |= MSVCRT__EM_OVERFLOW; - if (fpword & 0x800) flags |= MSVCRT__EM_UNDERFLOW; - if (fpword & 0x1000) flags |= MSVCRT__EM_INEXACT; - switch (fpword & 0x6000) - { - case 0x6000: flags |= MSVCRT__RC_UP|MSVCRT__RC_DOWN; break; - case 0x4000: flags |= MSVCRT__RC_UP; break; - case 0x2000: flags |= MSVCRT__RC_DOWN; break; - } - switch (fpword & 0x8040) - { - case 0x0040: flags |= MSVCRT__DN_FLUSH_OPERANDS_SAVE_RESULTS; break; - case 0x8000: flags |= MSVCRT__DN_SAVE_OPERANDS_FLUSH_RESULTS; break; - case 0x8040: flags |= MSVCRT__DN_FLUSH; break; - } + flags = get_flags_from_mxcsr(); TRACE( "sse2 flags=%08x newval=%08x mask=%08x\n", flags, newval, mask ); if (mask) @@ -1241,7 +1255,8 @@ unsigned int CDECL _control87(unsigned int newval, unsigned int mask) #ifdef __i386__ unsigned int sse2_cw; - __control87_2( newval, mask, &flags, &sse2_cw ); + __control87_2( newval, mask, &flags, 0 ); + sse2_cw = get_flags_from_mxcsr(); if ((flags ^ sse2_cw) & (MSVCRT__MCW_EM | MSVCRT__MCW_RC)) flags |= MSVCRT__EM_AMBIGUOUS; #elif defined(__x86_64__) -- 2.26.2

2 2

[PATCH] ntdll: Initialize StatusWord and TagWord in i386 init_thread_context.
by Jefferson Carpenter July 3, 2020

July 3, 2020

This does not resolve the bug, but moves toward resolving it. I have not been able to get a consistent read on what to initialize the remaining members to. Thanks, Jefferson

1 0