1 files changed, 36 insertions, 0 deletions
diff --git a/libc/kernel/arch-x86/asm/percpu_32.h b/libc/kernel/arch-x86/asm/percpu_32.h
new file mode 100644
index 0000000..21135d6
--- /dev/null
+++ b/libc/kernel/arch-x86/asm/percpu_32.h
@@ -0,0 +1,36 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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 __ARCH_I386_PERCPU__
+#define __ARCH_I386_PERCPU__
+
+#ifdef __ASSEMBLY__
+
+#define PER_CPU(var, reg)   movl $per_cpu__##var, reg
+#define PER_CPU_VAR(var) per_cpu__##var
+
+#else
+
+#include <asm-generic/percpu.h>
+#define __percpu_seg ""
+
+#define percpu_to_op(op,var,val)   do {   typedef typeof(var) T__;   if (0) { T__ tmp__; tmp__ = (val); }   switch (sizeof(var)) {   case 1:   asm(op "b %1,"__percpu_seg"%0"   : "+m" (var)   :"ri" ((T__)val));   break;   case 2:   asm(op "w %1,"__percpu_seg"%0"   : "+m" (var)   :"ri" ((T__)val));   break;   case 4:   asm(op "l %1,"__percpu_seg"%0"   : "+m" (var)   :"ri" ((T__)val));   break;   default: __bad_percpu_size();   }   } while (0)
+
+#define percpu_from_op(op,var)   ({   typeof(var) ret__;   switch (sizeof(var)) {   case 1:   asm(op "b "__percpu_seg"%1,%0"   : "=r" (ret__)   : "m" (var));   break;   case 2:   asm(op "w "__percpu_seg"%1,%0"   : "=r" (ret__)   : "m" (var));   break;   case 4:   asm(op "l "__percpu_seg"%1,%0"   : "=r" (ret__)   : "m" (var));   break;   default: __bad_percpu_size();   }   ret__; })
+
+#define x86_read_percpu(var) percpu_from_op("mov", per_cpu__##var)
+#define x86_write_percpu(var,val) percpu_to_op("mov", per_cpu__##var, val)
+#define x86_add_percpu(var,val) percpu_to_op("add", per_cpu__##var, val)
+#define x86_sub_percpu(var,val) percpu_to_op("sub", per_cpu__##var, val)
+#define x86_or_percpu(var,val) percpu_to_op("or", per_cpu__##var, val)
+#endif
+
+#endif