1 files changed, 43 insertions, 0 deletions
diff --git a/libc/kernel/arch-x86/asm/tlbflush_32.h b/libc/kernel/arch-x86/asm/tlbflush_32.h
new file mode 100644
index 0000000..8ebff80
--- /dev/null
+++ b/libc/kernel/arch-x86/asm/tlbflush_32.h
@@ -0,0 +1,43 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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 _I386_TLBFLUSH_H
+#define _I386_TLBFLUSH_H
+
+#include <linux/mm.h>
+#include <asm/processor.h>
+
+#define __flush_tlb() __native_flush_tlb()
+#define __flush_tlb_global() __native_flush_tlb_global()
+#define __flush_tlb_single(addr) __native_flush_tlb_single(addr)
+
+#define __native_flush_tlb()   do {   unsigned int tmpreg;     __asm__ __volatile__(   "movl %%cr3, %0;              \n"   "movl %0, %%cr3;  # flush TLB \n"   : "=r" (tmpreg)   :: "memory");   } while (0)
+
+#define __native_flush_tlb_global()   do {   unsigned int tmpreg, cr4, cr4_orig;     __asm__ __volatile__(   "movl %%cr4, %2;  # turn off PGE     \n"   "movl %2, %1;                        \n"   "andl %3, %1;                        \n"   "movl %1, %%cr4;                     \n"   "movl %%cr3, %0;                     \n"   "movl %0, %%cr3;  # flush TLB        \n"   "movl %2, %%cr4;  # turn PGE back on \n"   : "=&r" (tmpreg), "=&r" (cr4), "=&r" (cr4_orig)   : "i" (~X86_CR4_PGE)   : "memory");   } while (0)
+
+#define __native_flush_tlb_single(addr)   __asm__ __volatile__("invlpg (%0)" ::"r" (addr) : "memory")
+
+#define __flush_tlb_all()   do {   if (cpu_has_pge)   __flush_tlb_global();   else   __flush_tlb();   } while (0)
+
+#define cpu_has_invlpg (boot_cpu_data.x86 > 3)
+
+#define __flush_tlb_one(addr)   do {   if (cpu_has_invlpg)   __flush_tlb_single(addr);   else   __flush_tlb();   } while (0)
+
+#define TLB_FLUSH_ALL 0xffffffff
+
+#include <linux/sched.h>
+
+#define flush_tlb() __flush_tlb()
+#define flush_tlb_all() __flush_tlb_all()
+#define local_flush_tlb() __flush_tlb()
+
+#define flush_tlb_others(mask, mm, va)   native_flush_tlb_others(&mask, mm, va)
+#endif