auto import from //depot/cupcake/@135843
diff --git a/libc/kernel/arch-x86/asm/i387_32.h b/libc/kernel/arch-x86/asm/i387_32.h
new file mode 100644
index 0000000..8563fb9
--- /dev/null
+++ b/libc/kernel/arch-x86/asm/i387_32.h
@@ -0,0 +1,33 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ *** This header was automatically generated from a Linux kernel header
+ *** of the same name, to make information necessary for userspace to
+ *** call into the kernel available to libc. It contains only constants,
+ *** structures, and macros generated from the original header, and thus,
+ *** contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __ASM_I386_I387_H
+#define __ASM_I386_I387_H
+
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/kernel_stat.h>
+#include <asm/processor.h>
+#include <asm/sigcontext.h>
+#include <asm/user.h>
+
+#define restore_fpu(tsk) alternative_input( "nop ; frstor %1", "fxrstor %1", X86_FEATURE_FXSR, "m" ((tsk)->thread.i387.fxsave))
+
+#define kernel_fpu_end() do { stts(); preempt_enable(); } while(0)
+
+#define safe_address (kstat_cpu(0).cpustat.user)
+
+#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)
+#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)
+#define unlazy_fpu( tsk ) do { preempt_disable(); __unlazy_fpu(tsk); preempt_enable(); } while (0)
+#define clear_fpu( tsk ) do { preempt_disable(); __clear_fpu( tsk ); preempt_enable(); } while (0)
+
+#endif