X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-i386%2Fsystem.h;h=acd5c26b69ba68f9a2964b59cdf01b86daab9fda;hb=165415f700b0c77fa1f8db6198f48582639adf78;hp=3db717a244f0c4df75a06102c522e6cdf19f82b1;hpb=07342d623b8e1ac9501a36a0da55cbce1117aeaf;p=linux-2.6-omap-h63xx.git

diff --git a/include/asm-i386/system.h b/include/asm-i386/system.h
index 3db717a244f..acd5c26b69b 100644
--- a/include/asm-i386/system.h
+++ b/include/asm-i386/system.h
@@ -14,8 +14,7 @@ extern struct task_struct * FASTCALL(__switch_to(struct task_struct *prev, struc
 
 #define switch_to(prev,next,last) do {					\
 	unsigned long esi,edi;						\
-	asm volatile("pushfl\n\t"					\
-		     "pushl %%ebp\n\t"					\
+	asm volatile("pushl %%ebp\n\t"					\
 		     "movl %%esp,%0\n\t"	/* save ESP */		\
 		     "movl %5,%%esp\n\t"	/* restore ESP */	\
 		     "movl $1f,%1\n\t"		/* save EIP */		\
@@ -23,7 +22,6 @@ extern struct task_struct * FASTCALL(__switch_to(struct task_struct *prev, struc
 		     "jmp __switch_to\n"				\
 		     "1:\t"						\
 		     "popl %%ebp\n\t"					\
-		     "popfl"						\
 		     :"=m" (prev->thread.esp),"=m" (prev->thread.eip),	\
 		      "=a" (last),"=S" (esi),"=D" (edi)			\
 		     :"m" (next->thread.esp),"m" (next->thread.eip),	\
@@ -93,13 +91,13 @@ static inline unsigned long _get_base(char * addr)
 		".align 4\n\t"			\
 		".long 1b,3b\n"			\
 		".previous"			\
-		: :"m" (value))
+		: :"rm" (value))
 
 /*
  * Save a segment register away
  */
 #define savesegment(seg, value) \
-	asm volatile("mov %%" #seg ",%0":"=m" (value))
+	asm volatile("mov %%" #seg ",%0":"=rm" (value))
 
 /*
  * Clear and set 'TS' bit respectively
@@ -107,13 +105,33 @@ static inline unsigned long _get_base(char * addr)
 #define clts() __asm__ __volatile__ ("clts")
 #define read_cr0() ({ \
 	unsigned int __dummy; \
-	__asm__( \
+	__asm__ __volatile__( \
 		"movl %%cr0,%0\n\t" \
 		:"=r" (__dummy)); \
 	__dummy; \
 })
 #define write_cr0(x) \
-	__asm__("movl %0,%%cr0": :"r" (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; \
@@ -123,7 +141,7 @@ static inline unsigned long _get_base(char * addr)
 	__dummy; \
 })
 #define write_cr4(x) \
-	__asm__("movl %0,%%cr4": :"r" (x));
+	__asm__ __volatile__("movl %0,%%cr4": :"r" (x));
 #define stts() write_cr0(8 | read_cr0())
 
 #endif	/* __KERNEL__ */
@@ -447,6 +465,8 @@ struct alt_instr {
 #define local_irq_enable()	__asm__ __volatile__("sti": : :"memory")
 /* used in the idle loop; sti takes one instruction cycle to complete */
 #define safe_halt()		__asm__ __volatile__("sti; hlt": : :"memory")
+/* used when interrupts are already enabled or to shutdown the processor */
+#define halt()			__asm__ __volatile__("hlt": : :"memory")
 
 #define irqs_disabled()			\
 ({					\