initial Olimex linux tree from Daniel, originally Feb 3, 2016

1 files changed, 33 insertions, 0 deletions

diff --git a/linux/arch/x86/um/asm/processor.h b/linux/arch/x86/um/asm/processor.h
new file mode 100644
index 00000000..2a206d2b
--- /dev/null
+++ b/linux/arch/x86/um/asm/processor.h
@@ -0,0 +1,33 @@
+#ifndef __UM_PROCESSOR_H
+#define __UM_PROCESSOR_H
+
+/* include faultinfo structure */
+#include <sysdep/faultinfo.h>
+
+#ifdef CONFIG_X86_32
+# include "processor_32.h"
+#else
+# include "processor_64.h"
+#endif
+
+#define KSTK_EIP(tsk) KSTK_REG(tsk, HOST_IP)
+#define KSTK_ESP(tsk) KSTK_REG(tsk, HOST_SP)
+#define KSTK_EBP(tsk) KSTK_REG(tsk, HOST_BP)
+
+#define ARCH_IS_STACKGROW(address) \
+       (address + 65536 + 32 * sizeof(unsigned long) >= UPT_SP(&current->thread.regs.regs))
+
+#include <asm/user.h>
+
+/* 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 cpu_relax_lowlatency()	cpu_relax()
+
+#include <asm/processor-generic.h>
+
+#endif