Merge master.kernel.org:/home/rmk/linux-2.6-arm

[pandora-kernel.git] / include / asm-i386 / system.h

diff --git a/include/asm-i386/system.h b/include/asm-i386/system.h
index 3db717a..acd5c26 100644 (file)
--- 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()                        \
 ({                                     \