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ntdll: Store the pthread TEB value on thread init. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2021-07-06 12:31:53 +02:00
parent 5388a80e18
commit cec3db10f4
1 changed files with 5 additions and 1 deletions
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6
dlls/ntdll/unix/signal_x86_64.c
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@ -311,11 +311,13 @@ struct amd64_thread_data
DWORD_PTR dr7; /* 0318 */
void *exit_frame; /* 0320 exit frame pointer */
struct syscall_frame *syscall_frame; /* 0328 syscall frame pointer */
void *pthread_teb; /* 0330 thread data for pthread */
};
C_ASSERT( sizeof(struct amd64_thread_data) <= sizeof(((struct ntdll_thread_data *)0)->cpu_data) );
C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct amd64_thread_data, exit_frame ) == 0x320 );
C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct amd64_thread_data, syscall_frame ) == 0x328 );
C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct amd64_thread_data, pthread_teb ) == 0x330 );
static inline struct amd64_thread_data *amd64_thread_data(void)
{
@ -2740,6 +2742,7 @@ void signal_init_thread( TEB *teb )
#if defined __linux__
arch_prctl( ARCH_SET_GS, teb );
arch_prctl( ARCH_GET_FS, &amd64_thread_data()->pthread_teb );
#elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
amd64_set_gsbase( teb );
#elif defined(__NetBSD__)
@ -2751,11 +2754,12 @@ void signal_init_thread( TEB *teb )
__asm__ volatile (".byte 0x65\n\tmovq %0,%c1"
:
: "r" (teb->ThreadLocalStoragePointer), "n" (FIELD_OFFSET(TEB, ThreadLocalStoragePointer)));
amd64_thread_data()->pthread_teb = mac_thread_gsbase();
/* alloc_tls_slot() needs to poke a value to an address relative to each
thread's gsbase. Have each thread record its gsbase pointer into its
TEB so alloc_tls_slot() can find it. */
teb->Reserved5[0] = mac_thread_gsbase();
teb->Reserved5[0] = amd64_thread_data()->pthread_teb;
#else
# error Please define setting %gs for your architecture
#endif