diff options
Diffstat (limited to 'include/asm-i386/thread_info.h')
| -rw-r--r-- | include/asm-i386/thread_info.h | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/include/asm-i386/thread_info.h b/include/asm-i386/thread_info.h index fdbc7f422ea5..2833fa2c0dd0 100644 --- a/include/asm-i386/thread_info.h +++ b/include/asm-i386/thread_info.h @@ -37,6 +37,7 @@ struct thread_info { 0-0xBFFFFFFF for user-thead 0-0xFFFFFFFF for kernel-thread */ + void *sysenter_return; struct restart_block restart_block; unsigned long previous_esp; /* ESP of the previous stack in case @@ -83,17 +84,15 @@ struct thread_info { #define init_stack (init_thread_union.stack) +/* how to get the current stack pointer from C */ +register unsigned long current_stack_pointer asm("esp") __attribute_used__; + /* how to get the thread information struct from C */ static inline struct thread_info *current_thread_info(void) { - struct thread_info *ti; - __asm__("andl %%esp,%0; ":"=r" (ti) : "0" (~(THREAD_SIZE - 1))); - return ti; + return (struct thread_info *)(current_stack_pointer & ~(THREAD_SIZE - 1)); } -/* how to get the current stack pointer from C */ -register unsigned long current_stack_pointer asm("esp") __attribute_used__; - /* thread information allocation */ #ifdef CONFIG_DEBUG_STACK_USAGE #define alloc_thread_info(tsk) \ |