Alexandre Julliard : ntdll: Always use the TEB that was passed to signal_start_thread().
Alexandre Julliard
julliard at winehq.org
Mon Jun 14 16:00:36 CDT 2021
Module: wine
Branch: master
Commit: a5cec4f5fbef0c586b530ea51acd6e3da2ff3f83
URL: https://source.winehq.org/git/wine.git/?a=commit;h=a5cec4f5fbef0c586b530ea51acd6e3da2ff3f83
Author: Alexandre Julliard <julliard at winehq.org>
Date: Mon Jun 14 12:59:05 2021 +0200
ntdll: Always use the TEB that was passed to signal_start_thread().
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
dlls/ntdll/unix/signal_i386.c | 24 +++++++++++++-----------
dlls/ntdll/unix/signal_x86_64.c | 22 +++++++++++-----------
2 files changed, 24 insertions(+), 22 deletions(-)
diff --git a/dlls/ntdll/unix/signal_i386.c b/dlls/ntdll/unix/signal_i386.c
index 4ce1b519da3..89f4fb4151c 100644
--- a/dlls/ntdll/unix/signal_i386.c
+++ b/dlls/ntdll/unix/signal_i386.c
@@ -2342,7 +2342,7 @@ void signal_init_process(void)
/***********************************************************************
* init_thread_context
*/
-static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg )
+static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg, TEB *teb )
{
context->SegCs = get_cs();
context->SegDs = get_ds();
@@ -2353,7 +2353,7 @@ static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry,
context->EFlags = 0x202;
context->Eax = (DWORD)entry;
context->Ebx = (DWORD)arg;
- context->Esp = (DWORD)NtCurrentTeb()->Tib.StackBase - 16;
+ context->Esp = (DWORD)teb->Tib.StackBase - 16;
context->Eip = (DWORD)pRtlUserThreadStart;
context->FloatSave.ControlWord = 0x27f;
((XSAVE_FORMAT *)context->ExtendedRegisters)->ControlWord = 0x27f;
@@ -2369,7 +2369,7 @@ static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry,
/***********************************************************************
* get_initial_context
*/
-PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend )
+PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb )
{
CONTEXT *ctx;
@@ -2377,15 +2377,15 @@ PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void
{
CONTEXT context = { CONTEXT_ALL };
- init_thread_context( &context, entry, arg );
+ init_thread_context( &context, entry, arg, teb );
wait_suspend( &context );
ctx = (CONTEXT *)((ULONG_PTR)context.Esp & ~15) - 1;
*ctx = context;
}
else
{
- ctx = (CONTEXT *)((char *)NtCurrentTeb()->Tib.StackBase - 16) - 1;
- init_thread_context( ctx, entry, arg );
+ ctx = (CONTEXT *)((char *)teb->Tib.StackBase - 16) - 1;
+ init_thread_context( ctx, entry, arg, teb );
}
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
ctx->ContextFlags = CONTEXT_FULL | CONTEXT_FLOATING_POINT | CONTEXT_EXTENDED_REGISTERS;
@@ -2409,17 +2409,19 @@ __ASM_GLOBAL_FUNC( signal_start_thread,
"pushl %edi\n\t"
__ASM_CFI(".cfi_rel_offset %edi,-12\n\t")
/* store exit frame */
- "movl %ebp,%fs:0x1f4\n\t" /* x86_thread_data()->exit_frame */
+ "movl 24(%ebp),%ecx\n\t" /* teb */
+ "movl %ebp,0x1f4(%ecx)\n\t" /* x86_thread_data()->exit_frame */
/* set syscall frame */
- "cmpl $0,%fs:0x1f8\n\t" /* x86_thread_data()->syscall_frame */
+ "cmpl $0,0x1f8(%ecx)\n\t" /* x86_thread_data()->syscall_frame */
"jnz 1f\n\t"
"leal -0x380(%esp),%eax\n\t" /* sizeof(struct syscall_frame) */
"andl $~63,%eax\n\t"
- "movl %eax,%fs:0x1f8\n" /* x86_thread_data()->syscall_frame */
+ "movl %eax,0x1f8(%ecx)\n" /* x86_thread_data()->syscall_frame */
/* switch to thread stack */
- "1:\tmovl %fs:4,%eax\n\t" /* NtCurrentTeb()->StackBase */
- "leal -0x1004(%eax),%esp\n\t"
+ "1:\tmovl 4(%ecx),%eax\n\t" /* teb->StackBase */
+ "leal -0x1000(%eax),%esp\n\t"
/* attach dlls */
+ "pushl %ecx\n\t" /* teb */
"pushl 16(%ebp)\n\t" /* suspend */
"pushl 12(%ebp)\n\t" /* arg */
"pushl 8(%ebp)\n\t" /* entry */
diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c
index 04442a012a2..10aa2a516b0 100644
--- a/dlls/ntdll/unix/signal_x86_64.c
+++ b/dlls/ntdll/unix/signal_x86_64.c
@@ -2603,13 +2603,13 @@ void signal_init_process(void)
/***********************************************************************
* init_thread_context
*/
-static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg )
+static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg, 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)NtCurrentTeb()->Tib.StackBase - 0x28;
+ context->Rsp = (ULONG_PTR)teb->Tib.StackBase - 0x28;
context->Rip = (ULONG_PTR)pRtlUserThreadStart;
context->EFlags = 0x200;
context->u.FltSave.ControlWord = 0x27f;
@@ -2620,7 +2620,7 @@ static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry,
/***********************************************************************
* get_initial_context
*/
-PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend )
+PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb )
{
CONTEXT *ctx;
@@ -2629,15 +2629,15 @@ PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void
CONTEXT context = { 0 };
context.ContextFlags = CONTEXT_ALL;
- init_thread_context( &context, entry, arg );
+ init_thread_context( &context, entry, arg, teb );
wait_suspend( &context );
ctx = (CONTEXT *)((ULONG_PTR)context.Rsp & ~15) - 1;
*ctx = context;
}
else
{
- ctx = (CONTEXT *)((char *)NtCurrentTeb()->Tib.StackBase - 0x30) - 1;
- init_thread_context( ctx, entry, arg );
+ ctx = (CONTEXT *)((char *)teb->Tib.StackBase - 0x30) - 1;
+ init_thread_context( ctx, entry, arg, teb );
}
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
ctx->ContextFlags = CONTEXT_FULL;
@@ -2666,17 +2666,17 @@ __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 %gs:0x30,%rax\n\t"
- "movq %rsp,0x320(%rax)\n\t" /* amd64_thread_data()->exit_frame */
+ "movq %rsp,0x320(%r8)\n\t" /* amd64_thread_data()->exit_frame */
/* set syscall frame */
- "cmpq $0,0x328(%rax)\n\t" /* amd64_thread_data()->syscall_frame */
+ "cmpq $0,0x328(%r8)\n\t" /* amd64_thread_data()->syscall_frame */
"jnz 1f\n\t"
"leaq -0x400(%rsp),%r10\n\t" /* sizeof(struct syscall_frame) */
"andq $~63,%r10\n\t"
- "movq %r10,0x328(%rax)\n" /* amd64_thread_data()->syscall_frame */
+ "movq %r10,0x328(%r8)\n" /* amd64_thread_data()->syscall_frame */
/* switch to thread stack */
- "1:\tmovq 8(%rax),%rax\n\t" /* NtCurrentTeb()->Tib.StackBase */
+ "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"
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