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-rw-r--r--include/asm-i386/processor.h26
1 files changed, 20 insertions, 6 deletions
diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h
index 359bb0151742..d0d8b0160090 100644
--- a/include/asm-i386/processor.h
+++ b/include/asm-i386/processor.h
@@ -29,7 +29,7 @@ struct desc_struct {
};
#define desc_empty(desc) \
- (!((desc)->a + (desc)->b))
+ (!((desc)->a | (desc)->b))
#define desc_equal(desc1, desc2) \
(((desc1)->a == (desc2)->a) && ((desc1)->b == (desc2)->b))
@@ -501,12 +501,16 @@ static inline void load_esp0(struct tss_struct *tss, struct thread_struct *threa
} while (0)
/*
- * This special macro can be used to load a debugging register
+ * These special macros can be used to get or set a debugging register
*/
-#define loaddebug(thread,register) \
- __asm__("movl %0,%%db" #register \
- : /* no output */ \
- :"r" ((thread)->debugreg[register]))
+#define get_debugreg(var, register) \
+ __asm__("movl %%db" #register ", %0" \
+ :"=r" (var))
+#define set_debugreg(value, register) \
+ __asm__("movl %0,%%db" #register \
+ : /* no output */ \
+ :"r" (value))
+
/* Forward declaration, a strange C thing */
struct task_struct;
@@ -687,5 +691,15 @@ extern void select_idle_routine(const struct cpuinfo_x86 *c);
#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
extern unsigned long boot_option_idle_override;
+extern void enable_sep_cpu(void);
+extern int sysenter_setup(void);
+
+#ifdef CONFIG_MTRR
+extern void mtrr_ap_init(void);
+extern void mtrr_bp_init(void);
+#else
+#define mtrr_ap_init() do {} while (0)
+#define mtrr_bp_init() do {} while (0)
+#endif
#endif /* __ASM_I386_PROCESSOR_H */