| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame^] | 1 | /**************************************************************************** |
| 2 | **************************************************************************** |
| 3 | *** |
| 4 | *** This header was automatically generated from a Linux kernel header |
| 5 | *** of the same name, to make information necessary for userspace to |
| 6 | *** call into the kernel available to libc. It contains only constants, |
| 7 | *** structures, and macros generated from the original header, and thus, |
| 8 | *** contains no copyrightable information. |
| 9 | *** |
| 10 | **************************************************************************** |
| 11 | ****************************************************************************/ |
| 12 | #ifndef __ASM_I386_I387_H |
| 13 | #define __ASM_I386_I387_H |
| 14 | |
| 15 | #include <linux/sched.h> |
| 16 | #include <linux/init.h> |
| 17 | #include <linux/kernel_stat.h> |
| 18 | #include <asm/processor.h> |
| 19 | #include <asm/sigcontext.h> |
| 20 | #include <asm/user.h> |
| 21 | |
| 22 | #define restore_fpu(tsk) alternative_input( "nop ; frstor %1", "fxrstor %1", X86_FEATURE_FXSR, "m" ((tsk)->thread.i387.fxsave)) |
| 23 | |
| 24 | #define kernel_fpu_end() do { stts(); preempt_enable(); } while(0) |
| 25 | |
| 26 | #define safe_address (kstat_cpu(0).cpustat.user) |
| 27 | |
| 28 | #define __unlazy_fpu( tsk ) do { if (task_thread_info(tsk)->status & TS_USEDFPU) { __save_init_fpu(tsk); stts(); } else tsk->fpu_counter = 0; } while (0) |
| 29 | #define __clear_fpu( tsk ) do { if (task_thread_info(tsk)->status & TS_USEDFPU) { asm volatile("fnclex ; fwait"); task_thread_info(tsk)->status &= ~TS_USEDFPU; stts(); } } while (0) |
| 30 | #define unlazy_fpu( tsk ) do { preempt_disable(); __unlazy_fpu(tsk); preempt_enable(); } while (0) |
| 31 | #define clear_fpu( tsk ) do { preempt_disable(); __clear_fpu( tsk ); preempt_enable(); } while (0) |
| 32 | |
| 33 | #endif |