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-rw-r--r--include/asm-i386/system.h139
1 files changed, 85 insertions, 54 deletions
diff --git a/include/asm-i386/system.h b/include/asm-i386/system.h
index a6d20d9..c3a58c0 100644
--- a/include/asm-i386/system.h
+++ b/include/asm-i386/system.h
@@ -88,65 +88,96 @@ __asm__ __volatile__ ("movw %%dx,%1\n\t" \
#define savesegment(seg, value) \
asm volatile("mov %%" #seg ",%0":"=rm" (value))
+
+static inline void native_clts(void)
+{
+ asm volatile ("clts");
+}
+
+static inline unsigned long native_read_cr0(void)
+{
+ unsigned long val;
+ asm volatile("movl %%cr0,%0\n\t" :"=r" (val));
+ return val;
+}
+
+static inline void native_write_cr0(unsigned long val)
+{
+ asm volatile("movl %0,%%cr0": :"r" (val));
+}
+
+static inline unsigned long native_read_cr2(void)
+{
+ unsigned long val;
+ asm volatile("movl %%cr2,%0\n\t" :"=r" (val));
+ return val;
+}
+
+static inline void native_write_cr2(unsigned long val)
+{
+ asm volatile("movl %0,%%cr2": :"r" (val));
+}
+
+static inline unsigned long native_read_cr3(void)
+{
+ unsigned long val;
+ asm volatile("movl %%cr3,%0\n\t" :"=r" (val));
+ return val;
+}
+
+static inline void native_write_cr3(unsigned long val)
+{
+ asm volatile("movl %0,%%cr3": :"r" (val));
+}
+
+static inline unsigned long native_read_cr4(void)
+{
+ unsigned long val;
+ asm volatile("movl %%cr4,%0\n\t" :"=r" (val));
+ return val;
+}
+
+static inline unsigned long native_read_cr4_safe(void)
+{
+ unsigned long val;
+ /* This could fault if %cr4 does not exist */
+ asm("1: movl %%cr4, %0 \n"
+ "2: \n"
+ ".section __ex_table,\"a\" \n"
+ ".long 1b,2b \n"
+ ".previous \n"
+ : "=r" (val): "0" (0));
+ return val;
+}
+
+static inline void native_write_cr4(unsigned long val)
+{
+ asm volatile("movl %0,%%cr4": :"r" (val));
+}
+
+static inline void native_wbinvd(void)
+{
+ asm volatile("wbinvd": : :"memory");
+}
+
+
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
#else
-#define read_cr0() ({ \
- unsigned int __dummy; \
- __asm__ __volatile__( \
- "movl %%cr0,%0\n\t" \
- :"=r" (__dummy)); \
- __dummy; \
-})
-#define write_cr0(x) \
- __asm__ __volatile__("movl %0,%%cr0": :"r" (x))
-
-#define read_cr2() ({ \
- unsigned int __dummy; \
- __asm__ __volatile__( \
- "movl %%cr2,%0\n\t" \
- :"=r" (__dummy)); \
- __dummy; \
-})
-#define write_cr2(x) \
- __asm__ __volatile__("movl %0,%%cr2": :"r" (x))
-
-#define read_cr3() ({ \
- unsigned int __dummy; \
- __asm__ ( \
- "movl %%cr3,%0\n\t" \
- :"=r" (__dummy)); \
- __dummy; \
-})
-#define write_cr3(x) \
- __asm__ __volatile__("movl %0,%%cr3": :"r" (x))
-
-#define read_cr4() ({ \
- unsigned int __dummy; \
- __asm__( \
- "movl %%cr4,%0\n\t" \
- :"=r" (__dummy)); \
- __dummy; \
-})
-#define read_cr4_safe() ({ \
- unsigned int __dummy; \
- /* This could fault if %cr4 does not exist */ \
- __asm__("1: movl %%cr4, %0 \n" \
- "2: \n" \
- ".section __ex_table,\"a\" \n" \
- ".long 1b,2b \n" \
- ".previous \n" \
- : "=r" (__dummy): "0" (0)); \
- __dummy; \
-})
-#define write_cr4(x) \
- __asm__ __volatile__("movl %0,%%cr4": :"r" (x))
-
-#define wbinvd() \
- __asm__ __volatile__ ("wbinvd": : :"memory")
+#define read_cr0() (native_read_cr0())
+#define write_cr0(x) (native_write_cr0(x))
+#define read_cr2() (native_read_cr2())
+#define write_cr2(x) (native_write_cr2(x))
+#define read_cr3() (native_read_cr3())
+#define write_cr3(x) (native_write_cr3(x))
+#define read_cr4() (native_read_cr4())
+#define read_cr4_safe() (native_read_cr4_safe())
+#define write_cr4(x) (native_write_cr4(x))
+#define wbinvd() (native_wbinvd())
/* Clear the 'TS' bit */
-#define clts() __asm__ __volatile__ ("clts")
+#define clts() (native_clts())
+
#endif/* CONFIG_PARAVIRT */
/* Set the 'TS' bit */
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