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ntdll: Simulate a syscall return when starting a thread. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2021-06-21 15:57:26 +02:00
parent db26df5934
commit fed7e7a78b
7 changed files with 140 additions and 198 deletions
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2
dlls/ntdll/unix/server.c
View File

@ -1600,7 +1600,7 @@ void server_init_process_done(void)
SERVER_END_REQ;
assert( !status );
signal_start_thread( entry, peb, suspend, pLdrInitializeThunk, NtCurrentTeb() );
signal_start_thread( entry, peb, suspend, NtCurrentTeb() );
}

69
dlls/ntdll/unix/signal_arm.c
View File

@ -894,48 +894,39 @@ void signal_init_process(void)
/***********************************************************************
* init_thread_context
* call_init_thunk
*/
static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg, TEB *teb )
void DECLSPEC_HIDDEN call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb )
{
context->R0 = (DWORD)entry;
context->R1 = (DWORD)arg;
context->Sp = (DWORD)teb->Tib.StackBase;
context->Pc = (DWORD)pRtlUserThreadStart;
if (context->Pc & 1) context->Cpsr |= 0x20; /* thumb mode */
struct arm_thread_data *thread_data = (struct arm_thread_data *)&teb->GdiTebBatch;
struct syscall_frame *frame = thread_data->syscall_frame;
CONTEXT *ctx, context = { CONTEXT_ALL };
context.R0 = (DWORD)entry;
context.R1 = (DWORD)arg;
context.Sp = (DWORD)teb->Tib.StackBase;
context.Pc = (DWORD)pRtlUserThreadStart;
if (context.Pc & 1) context.Cpsr |= 0x20; /* thumb mode */
if (NtCurrentTeb64())
{
WOW64_CPURESERVED *cpu = ULongToPtr( NtCurrentTeb64()->TlsSlots[WOW64_TLS_CPURESERVED] );
memcpy( cpu + 1, context, sizeof(*context) );
memcpy( cpu + 1, &context, sizeof(context) );
}
}
if (suspend) wait_suspend( &context );
/***********************************************************************
* get_initial_context
*/
PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void *arg,
BOOL suspend, TEB *teb )
{
CONTEXT *ctx;
if (suspend)
{
CONTEXT context = { CONTEXT_ALL };
init_thread_context( &context, entry, arg, teb );
wait_suspend( &context );
ctx = (CONTEXT *)((ULONG_PTR)context.Sp & ~15) - 1;
*ctx = context;
}
else
{
ctx = (CONTEXT *)teb->Tib.StackBase - 1;
init_thread_context( ctx, entry, arg, teb );
}
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
ctx = (CONTEXT *)((ULONG_PTR)context.Sp & ~15) - 1;
*ctx = context;
ctx->ContextFlags = CONTEXT_FULL;
return ctx;
NtSetContextThread( GetCurrentThread(), ctx );
frame->sp = (DWORD)ctx;
frame->pc = (DWORD)pLdrInitializeThunk;
frame->r0 = (DWORD)ctx;
frame->restore_flags |= CONTEXT_INTEGER;
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
__wine_syscall_dispatcher_return( frame, 0 );
}
@ -944,23 +935,15 @@ PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void
*/
__ASM_GLOBAL_FUNC( signal_start_thread,
"push {r4-r12,lr}\n\t"
"mov r5, r3\n\t" /* thunk */
/* store exit frame */
"ldr r3, [sp, #40]\n\t" /* teb */
"str sp, [r3, #0x1d4]\n\t" /* arm_thread_data()->exit_frame */
/* set syscall frame */
"ldr r6, [r3, #0x1d8]\n\t" /* arm_thread_data()->syscall_frame */
"cbnz r6, 1f\n\t"
"sub r6, sp, #0x150\n\t" /* sizeof(struct syscall_frame) */
"str r6, [r3, #0x1d8]\n\t" /* arm_thread_data()->syscall_frame */
/* switch to thread stack */
"1:\tldr r4, [r3, #4]\n\t" /* teb->Tib.StackBase */
"sub r4, #0x1000\n\t"
"mov sp, r4\n\t"
/* attach dlls */
"bl " __ASM_NAME("get_initial_context") "\n\t"
"mov lr, #0\n\t"
"bx r5" )
"1:\tmov sp, r6\n\t"
"bl " __ASM_NAME("call_init_thunk") )
/***********************************************************************

72
dlls/ntdll/unix/signal_arm64.c
View File

@ -1079,43 +1079,35 @@ void signal_init_process(void)
/***********************************************************************
* init_thread_context
* call_init_thunk
*/
static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg, TEB *teb )
void DECLSPEC_HIDDEN call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb )
{
context->u.s.X0 = (DWORD64)entry;
context->u.s.X1 = (DWORD64)arg;
context->u.s.X18 = (DWORD64)teb;
context->Sp = (DWORD64)teb->Tib.StackBase;
context->Pc = (DWORD64)pRtlUserThreadStart;
}
struct arm64_thread_data *thread_data = (struct arm64_thread_data *)&teb->GdiTebBatch;
struct syscall_frame *frame = thread_data->syscall_frame;
CONTEXT *ctx, context = { CONTEXT_ALL };
context.u.s.X0 = (DWORD64)entry;
context.u.s.X1 = (DWORD64)arg;
context.u.s.X18 = (DWORD64)teb;
context.Sp = (DWORD64)teb->Tib.StackBase;
context.Pc = (DWORD64)pRtlUserThreadStart;
/***********************************************************************
* get_initial_context
*/
PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void *arg,
BOOL suspend, TEB *teb )
{
CONTEXT *ctx;
if (suspend) wait_suspend( &context );
if (suspend)
{
CONTEXT context = { CONTEXT_ALL };
init_thread_context( &context, entry, arg, teb );
wait_suspend( &context );
ctx = (CONTEXT *)((ULONG_PTR)context.Sp & ~15) - 1;
*ctx = context;
}
else
{
ctx = (CONTEXT *)teb->Tib.StackBase - 1;
init_thread_context( ctx, entry, arg, teb );
}
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
ctx = (CONTEXT *)((ULONG_PTR)context.Sp & ~15) - 1;
*ctx = context;
ctx->ContextFlags = CONTEXT_FULL;
return ctx;
NtSetContextThread( GetCurrentThread(), ctx );
frame->sp = (ULONG64)ctx;
frame->pc = (ULONG64)pLdrInitializeThunk;
frame->x[0] = (ULONG64)ctx;
frame->x[18] = (ULONG64)teb;
frame->restore_flags |= CONTEXT_INTEGER;
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
__wine_syscall_dispatcher_return( frame, 0 );
}
@ -1124,24 +1116,16 @@ PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void
*/
__ASM_GLOBAL_FUNC( signal_start_thread,
"stp x29, x30, [sp,#-16]!\n\t"
"mov x19, x3\n\t" /* thunk */
"mov x18, x4\n\t" /* teb */
/* store exit frame */
"mov x29, sp\n\t"
"str x29, [x4, #0x2f0]\n\t" /* arm64_thread_data()->exit_frame */
"str x29, [x3, #0x2f0]\n\t" /* arm64_thread_data()->exit_frame */
/* set syscall frame */
"ldr x8, [x4, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */
"ldr x8, [x3, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */
"cbnz x8, 1f\n\t"
"sub x8, sp, #0x320\n\t" /* sizeof(struct syscall_frame) */
"str x8, [x4, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */
/* switch to thread stack */
"1:\tldr x5, [x4, #8]\n\t" /* teb->Tib.StackBase */
"sub sp, x5, #0x1000\n\t"
/* attach dlls */
"mov x3, x4\n\t"
"bl " __ASM_NAME("get_initial_context") "\n\t"
"mov lr, #0\n\t"
"br x19" )
"str x8, [x3, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */
"1:\tmov sp, x8\n\t"
"bl " __ASM_NAME("call_init_thunk") )
/***********************************************************************
* signal_exit_thread

104
dlls/ntdll/unix/signal_i386.c
View File

@ -2369,59 +2369,56 @@ void signal_init_process(void)
/***********************************************************************
* init_thread_context
* call_init_thunk
*/
static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg, TEB *teb )
{
context->SegCs = get_cs();
context->SegDs = get_ds();
context->SegEs = get_ds();
context->SegFs = get_fs();
context->SegGs = get_gs();
context->SegSs = get_ds();
context->EFlags = 0x202;
context->Eax = (DWORD)entry;
context->Ebx = (DWORD)arg;
context->Esp = (DWORD)teb->Tib.StackBase - 16;
context->Eip = (DWORD)pRtlUserThreadStart;
context->FloatSave.ControlWord = 0x27f;
((XSAVE_FORMAT *)context->ExtendedRegisters)->ControlWord = 0x27f;
((XSAVE_FORMAT *)context->ExtendedRegisters)->MxCsr = 0x1f80;
if (NtCurrentTeb64())
{
WOW64_CPURESERVED *cpu = ULongToPtr( NtCurrentTeb64()->TlsSlots[WOW64_TLS_CPURESERVED] );
memcpy( cpu + 1, context, sizeof(*context) );
}
}
/***********************************************************************
* get_initial_context
*/
PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb )
void DECLSPEC_HIDDEN call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb )
{
struct x86_thread_data *thread_data = (struct x86_thread_data *)&teb->GdiTebBatch;
struct syscall_frame *frame = thread_data->syscall_frame;
CONTEXT *ctx;
CONTEXT *ctx, context = { CONTEXT_ALL };
DWORD *stack;
if (suspend)
context.SegCs = get_cs();
context.SegDs = get_ds();
context.SegEs = get_ds();
context.SegFs = get_fs();
context.SegGs = get_gs();
context.SegSs = get_ds();
context.EFlags = 0x202;
context.Eax = (DWORD)entry;
context.Ebx = (DWORD)arg;
context.Esp = (DWORD)teb->Tib.StackBase - 16;
context.Eip = (DWORD)pRtlUserThreadStart;
context.FloatSave.ControlWord = 0x27f;
((XSAVE_FORMAT *)context.ExtendedRegisters)->ControlWord = 0x27f;
((XSAVE_FORMAT *)context.ExtendedRegisters)->MxCsr = 0x1f80;
if (NtCurrentTeb64())
{
CONTEXT context = { CONTEXT_ALL };
WOW64_CPURESERVED *cpu = ULongToPtr( NtCurrentTeb64()->TlsSlots[WOW64_TLS_CPURESERVED] );
memcpy( cpu + 1, &context, sizeof(context) );
}
init_thread_context( &context, entry, arg, teb );
wait_suspend( &context );
ctx = (CONTEXT *)((ULONG_PTR)context.Esp & ~15) - 1;
*ctx = context;
}
else
{
ctx = (CONTEXT *)((char *)teb->Tib.StackBase - 16) - 1;
init_thread_context( ctx, entry, arg, teb );
}
frame->syscall_flags = __wine_syscall_flags;
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
if (suspend) wait_suspend( &context );
ctx = (CONTEXT *)((ULONG_PTR)context.Esp & ~3) - 1;
*ctx = context;
ctx->ContextFlags = CONTEXT_FULL | CONTEXT_FLOATING_POINT | CONTEXT_EXTENDED_REGISTERS;
return ctx;
memset( frame, 0, sizeof(*frame) );
NtSetContextThread( GetCurrentThread(), ctx );
stack = (DWORD *)ctx;
*(--stack) = 0;
*(--stack) = 0;
*(--stack) = 0;
*(--stack) = (DWORD)ctx;
*(--stack) = 0xdeadbabe;
frame->esp = (DWORD)stack;
frame->eip = (DWORD)pLdrInitializeThunk;
frame->syscall_flags = __wine_syscall_flags;
frame->restore_flags |= CONTEXT_INTEGER;
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
__wine_syscall_dispatcher_return( frame, 0 );
}
@ -2441,28 +2438,21 @@ __ASM_GLOBAL_FUNC( signal_start_thread,
"pushl %edi\n\t"
__ASM_CFI(".cfi_rel_offset %edi,-12\n\t")
/* store exit frame */
"movl 24(%ebp),%ecx\n\t" /* teb */
"movl 20(%ebp),%ecx\n\t" /* teb */
"movl %ebp,0x1f4(%ecx)\n\t" /* x86_thread_data()->exit_frame */
/* set syscall frame */
"cmpl $0,0x1f8(%ecx)\n\t" /* x86_thread_data()->syscall_frame */
"movl 0x1f8(%ecx),%eax\n\t" /* x86_thread_data()->syscall_frame */
"orl %eax,%eax\n\t"
"jnz 1f\n\t"
"leal -0x380(%esp),%eax\n\t" /* sizeof(struct syscall_frame) */
"andl $~63,%eax\n\t"
"movl %eax,0x1f8(%ecx)\n" /* x86_thread_data()->syscall_frame */
/* switch to thread stack */
"1:\tmovl 4(%ecx),%eax\n\t" /* teb->StackBase */
"leal -0x1000(%eax),%esp\n\t"
/* attach dlls */
"1:\tmovl %eax,%esp\n\t"
"pushl %ecx\n\t" /* teb */
"pushl 16(%ebp)\n\t" /* suspend */
"pushl 12(%ebp)\n\t" /* arg */
"pushl 8(%ebp)\n\t" /* entry */
"call " __ASM_NAME("get_initial_context") "\n\t"
"movl %eax,(%esp)\n\t" /* context */
"movl 20(%ebp),%edx\n\t" /* thunk */
"xorl %ebp,%ebp\n\t"
"pushl $0\n\t"
"jmp *%edx" )
"call " __ASM_NAME("call_init_thunk") )
/***********************************************************************

87
dlls/ntdll/unix/signal_x86_64.c
View File

@ -2626,47 +2626,40 @@ void signal_init_process(void)
/***********************************************************************
* init_thread_context
* call_init_thunk
*/
static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg, TEB *teb )
void DECLSPEC_HIDDEN call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb )
{
__asm__( "movw %%cs,%0" : "=m" (context->SegCs) );
__asm__( "movw %%ss,%0" : "=m" (context->SegSs) );
context->Rcx = (ULONG_PTR)entry;
context->Rdx = (ULONG_PTR)arg;
context->Rsp = (ULONG_PTR)teb->Tib.StackBase - 0x28;
context->Rip = (ULONG_PTR)pRtlUserThreadStart;
context->EFlags = 0x200;
context->u.FltSave.ControlWord = 0x27f;
context->u.FltSave.MxCsr = context->MxCsr = 0x1f80;
}
struct amd64_thread_data *thread_data = (struct amd64_thread_data *)&teb->GdiTebBatch;
struct syscall_frame *frame = thread_data->syscall_frame;
CONTEXT *ctx, context = { 0 };
context.ContextFlags = CONTEXT_ALL;
context.Rcx = (ULONG_PTR)entry;
context.Rdx = (ULONG_PTR)arg;
context.Rsp = (ULONG_PTR)teb->Tib.StackBase - 0x28;
context.Rip = (ULONG_PTR)pRtlUserThreadStart;
context.EFlags = 0x200;
context.u.FltSave.ControlWord = 0x27f;
context.u.FltSave.MxCsr = context.MxCsr = 0x1f80;
__asm__( "movw %%cs,%0" : "=m" (context.SegCs) );
__asm__( "movw %%ss,%0" : "=m" (context.SegSs) );
/***********************************************************************
* get_initial_context
*/
PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb )
{
CONTEXT *ctx;
if (suspend) wait_suspend( &context );
if (suspend)
{
CONTEXT context = { 0 };
context.ContextFlags = CONTEXT_ALL;
init_thread_context( &context, entry, arg, teb );
wait_suspend( &context );
ctx = (CONTEXT *)((ULONG_PTR)context.Rsp & ~15) - 1;
*ctx = context;
}
else
{
ctx = (CONTEXT *)((char *)teb->Tib.StackBase - 0x30) - 1;
init_thread_context( ctx, entry, arg, teb );
}
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
ctx = (CONTEXT *)((ULONG_PTR)context.Rsp & ~15) - 1;
*ctx = context;
ctx->ContextFlags = CONTEXT_FULL;
return ctx;
memset( frame, 0, sizeof(*frame) );
NtSetContextThread( GetCurrentThread(), ctx );
frame->rsp = (ULONG64)ctx - 8;
frame->rip = (ULONG64)pLdrInitializeThunk;
frame->rcx = (ULONG64)ctx;
frame->restore_flags |= CONTEXT_INTEGER;
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
__wine_syscall_dispatcher_return( frame, 0 );
}
@ -2691,24 +2684,16 @@ __ASM_GLOBAL_FUNC( signal_start_thread,
"movq %r15,8(%rsp)\n\t"
__ASM_CFI(".cfi_rel_offset %r15,8\n\t")
/* store exit frame */
"movq %rsp,0x320(%r8)\n\t" /* amd64_thread_data()->exit_frame */
"movq %rsp,0x320(%rcx)\n\t" /* amd64_thread_data()->exit_frame */
/* set syscall frame */
"cmpq $0,0x328(%r8)\n\t" /* amd64_thread_data()->syscall_frame */
"movq 0x328(%rcx),%rax\n\t" /* amd64_thread_data()->syscall_frame */
"orq %rax,%rax\n\t"
"jnz 1f\n\t"
"leaq -0x400(%rsp),%r10\n\t" /* sizeof(struct syscall_frame) */
"andq $~63,%r10\n\t"
"movq %r10,0x328(%r8)\n" /* amd64_thread_data()->syscall_frame */
/* switch to thread stack */
"1:\tmovq 8(%r8),%rax\n\t" /* teb->Tib.StackBase */
"movq %rcx,%rbx\n\t" /* thunk */
"movq %r8,%rcx\n\t" /* teb */
"leaq -0x1000(%rax),%rsp\n\t"
/* attach dlls */
"call " __ASM_NAME("get_initial_context") "\n\t"
"movq %rax,%rcx\n\t" /* context */
"xorq %rax,%rax\n\t"
"pushq %rax\n\t"
"jmp *%rbx" )
"leaq -0x400(%rsp),%rax\n\t" /* sizeof(struct syscall_frame) */
"andq $~63,%rax\n\t"
"movq %rax,0x328(%rcx)\n" /* amd64_thread_data()->syscall_frame */
"1:\tmovq %rax,%rsp\n\t"
"call " __ASM_NAME("call_init_thunk"))
/***********************************************************************

2
dlls/ntdll/unix/thread.c
View File

@ -736,7 +736,7 @@ static void start_thread( TEB *teb )
thread_data->pthread_id = pthread_self();
signal_init_thread( teb );
server_init_thread( thread_data->start, &suspend );
signal_start_thread( thread_data->start, thread_data->param, suspend, pLdrInitializeThunk, teb );
signal_start_thread( thread_data->start, thread_data->param, suspend, teb );
}

2
dlls/ntdll/unix/unix_private.h
View File

@ -236,7 +236,7 @@ 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 DECLSPEC_NORETURN signal_start_thread( PRTL_THREAD_START_ROUTINE entry, void *arg,
BOOL suspend, void *thunk, TEB *teb ) DECLSPEC_HIDDEN;
BOOL suspend, TEB *teb ) DECLSPEC_HIDDEN;
extern void DECLSPEC_NORETURN signal_exit_thread( int status, void (*func)(int), TEB *teb ) DECLSPEC_HIDDEN;
extern void __wine_syscall_dispatcher(void) DECLSPEC_HIDDEN;
extern void WINAPI DECLSPEC_NORETURN __wine_syscall_dispatcher_return( void *frame, ULONG_PTR retval ) DECLSPEC_HIDDEN;