powerpc: Move code patching code into arch/powerpc/lib/code-patching.c

[linux-2.6] / include / asm-powerpc / system.h

diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h
index df781adac6dd02125ed0404ac941c75f6eaebac6..2642a92b724fc0bf7611b810f9ac1d0617d8aad3 100644 (file)
--- a/include/asm-powerpc/system.h
+++ b/include/asm-powerpc/system.h
@@ -30,11 +30,11 @@
  *
  * For wmb(), we use sync since wmb is used in drivers to order
  * stores to system memory with respect to writes to the device.
- * However, smp_wmb() can be a lighter-weight eieio barrier on
- * SMP since it is only used to order updates to system memory.
+ * However, smp_wmb() can be a lighter-weight lwsync or eieio barrier
+ * on SMP since it is only used to order updates to system memory.
  */
 #define mb()   __asm__ __volatile__ ("sync" : : : "memory")
-#define rmb()  __asm__ __volatile__ (__stringify(LWSYNC) : : : "memory")
+#define rmb()  __asm__ __volatile__ ("sync" : : : "memory")
 #define wmb()  __asm__ __volatile__ ("sync" : : : "memory")
 #define read_barrier_depends()  do { } while(0)
 
@@ -43,9 +43,16 @@
 #ifdef __KERNEL__
 #define AT_VECTOR_SIZE_ARCH 6 /* entries in ARCH_DLINFO */
 #ifdef CONFIG_SMP
+
+#ifdef __SUBARCH_HAS_LWSYNC
+#    define SMPWMB      lwsync
+#else
+#    define SMPWMB      eieio
+#endif
+
 #define smp_mb()       mb()
 #define smp_rmb()      rmb()
-#define smp_wmb()      eieio()
+#define smp_wmb()      __asm__ __volatile__ (__stringify(SMPWMB) : : :"memory")
 #define smp_read_barrier_depends()     read_barrier_depends()
 #else
 #define smp_mb()       barrier()
@@ -519,54 +526,6 @@ extern void reloc_got2(unsigned long);
 
 #define PTRRELOC(x)    ((typeof(x)) add_reloc_offset((unsigned long)(x)))
 
-static inline void create_instruction(unsigned long addr, unsigned int instr)
-{
-       unsigned int *p;
-       p  = (unsigned int *)addr;
-       *p = instr;
-       asm ("dcbst 0, %0; sync; icbi 0,%0; sync; isync" : : "r" (p));
-}
-
-/* Flags for create_branch:
- * "b"   == create_branch(addr, target, 0);
- * "ba"  == create_branch(addr, target, BRANCH_ABSOLUTE);
- * "bl"  == create_branch(addr, target, BRANCH_SET_LINK);
- * "bla" == create_branch(addr, target, BRANCH_ABSOLUTE | BRANCH_SET_LINK);
- */
-#define BRANCH_SET_LINK        0x1
-#define BRANCH_ABSOLUTE        0x2
-
-static inline void create_branch(unsigned long addr,
-               unsigned long target, int flags)
-{
-       unsigned int instruction;
-
-       if (! (flags & BRANCH_ABSOLUTE))
-               target = target - addr;
-
-       /* Mask out the flags and target, so they don't step on each other. */
-       instruction = 0x48000000 | (flags & 0x3) | (target & 0x03FFFFFC);
-
-       create_instruction(addr, instruction);
-}
-
-static inline void create_function_call(unsigned long addr, void * func)
-{
-       unsigned long func_addr;
-
-#ifdef CONFIG_PPC64
-       /*
-        * On PPC64 the function pointer actually points to the function's
-        * descriptor. The first entry in the descriptor is the address
-        * of the function text.
-        */
-       func_addr = *(unsigned long *)func;
-#else
-       func_addr = (unsigned long)func;
-#endif
-       create_branch(addr, func_addr, BRANCH_SET_LINK);
-}
-
 #ifdef CONFIG_VIRT_CPU_ACCOUNTING
 extern void account_system_vtime(struct task_struct *);
 #endif