* 2 of the License, or (at your option) any later version.
*/
+#include <asm/types.h>
+
+#define PPC_NOP_INSTR 0x60000000
+#define PPC_LWSYNC_INSTR 0x7c2004ac
+
/* Flags for create_branch:
* "b" == create_branch(addr, target, 0);
* "ba" == create_branch(addr, target, BRANCH_ABSOLUTE);
#define BRANCH_SET_LINK 0x1
#define BRANCH_ABSOLUTE 0x2
-extern void create_branch(unsigned long addr, unsigned long target, int flags);
-extern void create_instruction(unsigned long addr, unsigned int instr);
+unsigned int create_branch(const unsigned int *addr,
+ unsigned long target, int flags);
+unsigned int create_cond_branch(const unsigned int *addr,
+ unsigned long target, int flags);
+void patch_branch(unsigned int *addr, unsigned long target, int flags);
+void patch_instruction(unsigned int *addr, unsigned int instr);
+
+int instr_is_relative_branch(unsigned int instr);
+int instr_is_branch_to_addr(const unsigned int *instr, unsigned long addr);
+unsigned long branch_target(const unsigned int *instr);
+unsigned int translate_branch(const unsigned int *dest,
+ const unsigned int *src);
+
+static inline unsigned long ppc_function_entry(void *func)
+{
+#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.
+ */
+ return ((func_descr_t *)func)->entry;
+#else
+ return (unsigned long)func;
+#endif
+}
#endif /* _ASM_POWERPC_CODE_PATCHING_H */