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Diffstat (limited to 'arch/x86/um/asm/processor_64.h')
-rw-r--r--arch/x86/um/asm/processor_64.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/x86/um/asm/processor_64.h b/arch/x86/um/asm/processor_64.h
new file mode 100644
index 000000000000..61de92d916c3
--- /dev/null
+++ b/arch/x86/um/asm/processor_64.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2003 PathScale, Inc.
+ *
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_PROCESSOR_X86_64_H
+#define __UM_PROCESSOR_X86_64_H
+
+struct arch_thread {
+ unsigned long debugregs[8];
+ int debugregs_seq;
+ unsigned long fs;
+ struct faultinfo faultinfo;
+};
+
+/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
+static inline void rep_nop(void)
+{
+ __asm__ __volatile__("rep;nop": : :"memory");
+}
+
+#define cpu_relax() rep_nop()
+
+#define INIT_ARCH_THREAD { .debugregs = { [ 0 ... 7 ] = 0 }, \
+ .debugregs_seq = 0, \
+ .fs = 0, \
+ .faultinfo = { 0, 0, 0 } }
+
+static inline void arch_flush_thread(struct arch_thread *thread)
+{
+}
+
+static inline void arch_copy_thread(struct arch_thread *from,
+ struct arch_thread *to)
+{
+ to->fs = from->fs;
+}
+
+#include <asm/user.h>
+
+#define current_text_addr() \
+ ({ void *pc; __asm__("movq $1f,%0\n1:":"=g" (pc)); pc; })
+
+#endif