summaryrefslogtreecommitdiffstats
path: root/include/asm-x86/irq_regs_32.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-x86/irq_regs_32.h')
-rw-r--r--include/asm-x86/irq_regs_32.h29
1 files changed, 29 insertions, 0 deletions
diff --git a/include/asm-x86/irq_regs_32.h b/include/asm-x86/irq_regs_32.h
new file mode 100644
index 000000000000..3368b20c0b48
--- /dev/null
+++ b/include/asm-x86/irq_regs_32.h
@@ -0,0 +1,29 @@
+/*
+ * Per-cpu current frame pointer - the location of the last exception frame on
+ * the stack, stored in the per-cpu area.
+ *
+ * Jeremy Fitzhardinge <jeremy@goop.org>
+ */
+#ifndef _ASM_I386_IRQ_REGS_H
+#define _ASM_I386_IRQ_REGS_H
+
+#include <asm/percpu.h>
+
+DECLARE_PER_CPU(struct pt_regs *, irq_regs);
+
+static inline struct pt_regs *get_irq_regs(void)
+{
+ return x86_read_percpu(irq_regs);
+}
+
+static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
+{
+ struct pt_regs *old_regs;
+
+ old_regs = get_irq_regs();
+ x86_write_percpu(irq_regs, new_regs);
+
+ return old_regs;
+}
+
+#endif /* _ASM_I386_IRQ_REGS_H */