5 files changed, 30 insertions, 7 deletions
diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
index 46bae1cf385..19b2ec1ec66 100644
--- a/include/asm-powerpc/io.h
+++ b/include/asm-powerpc/io.h
@@ -11,6 +11,8 @@
 
 /* Check of existence of legacy devices */
 extern int check_legacy_ioport(unsigned long base_port);
+#define PARALLEL_BASE	0x378
+#define PNPBIOS_BASE	0xf000	/* only relevant for PReP */
 
 #ifndef CONFIG_PPC64
 #include <asm-ppc/io.h>
diff --git a/include/asm-powerpc/kprobes.h b/include/asm-powerpc/kprobes.h
index 34e1f89a5fa..2dafa376a63 100644
--- a/include/asm-powerpc/kprobes.h
+++ b/include/asm-powerpc/kprobes.h
@@ -44,6 +44,28 @@ typedef unsigned int kprobe_opcode_t;
 #define IS_TDI(instr)		(((instr) & 0xfc000000) == 0x08000000)
 #define IS_TWI(instr)		(((instr) & 0xfc000000) == 0x0c000000)
 
+/*
+ * 64bit powerpc uses function descriptors.
+ * Handle cases where:
+ * 		- User passes a <.symbol> or <module:.symbol>
+ * 		- User passes a <symbol> or <module:symbol>
+ * 		- User passes a non-existant symbol, kallsyms_lookup_name
+ * 		  returns 0. Don't deref the NULL pointer in that case
+ */
+#define kprobe_lookup_name(name, addr)					\
+{									\
+	addr = (kprobe_opcode_t *)kallsyms_lookup_name(name);		\
+	if (addr) {							\
+		char *colon;						\
+		if ((colon = strchr(name, ':')) != NULL) {		\
+			colon++;					\
+			if (*colon != '\0' && *colon != '.')		\
+				addr = *(kprobe_opcode_t **)addr;	\
+		} else if (name[0] != '.')				\
+			addr = *(kprobe_opcode_t **)addr;		\
+	}								\
+}
+
 #define JPROBE_ENTRY(pentry)	(kprobe_opcode_t *)((func_descr_t *)pentry)
 
 #define is_trap(instr)	(IS_TW(instr) || IS_TD(instr) || \
diff --git a/include/asm-powerpc/ptrace.h b/include/asm-powerpc/ptrace.h
index 4435efe85d0..4ad77a13f86 100644
--- a/include/asm-powerpc/ptrace.h
+++ b/include/asm-powerpc/ptrace.h
@@ -73,6 +73,8 @@ struct pt_regs {
 #ifndef __ASSEMBLY__
 
 #define instruction_pointer(regs) ((regs)->nip)
+#define regs_return_value(regs) ((regs)->gpr[3])
+
 #ifdef CONFIG_SMP
 extern unsigned long profile_pc(struct pt_regs *regs);
 #else
diff --git a/include/asm-powerpc/spinlock.h b/include/asm-powerpc/spinlock.h
index c31e4382a77..cc4cfceac67 100644
--- a/include/asm-powerpc/spinlock.h
+++ b/include/asm-powerpc/spinlock.h
@@ -285,5 +285,9 @@ static __inline__ void __raw_write_unlock(raw_rwlock_t *rw)
 	rw->lock = 0;
 }
 
+#define _raw_spin_relax(lock)	__spin_yield(lock)
+#define _raw_read_relax(lock)	__rw_yield(lock)
+#define _raw_write_relax(lock)	__rw_yield(lock)
+
 #endif /* __KERNEL__ */
 #endif /* __ASM_SPINLOCK_H */
diff --git a/include/asm-powerpc/unistd.h b/include/asm-powerpc/unistd.h
index eb66eae6616..464a48cce7f 100644
--- a/include/asm-powerpc/unistd.h
+++ b/include/asm-powerpc/unistd.h
@@ -479,13 +479,6 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6
 #endif
 
 /*
- * System call prototypes.
- */
-#ifdef __KERNEL_SYSCALLS__
-extern int execve(const char *file, char **argv, char **envp);
-#endif /* __KERNEL_SYSCALLS__ */
-
-/*
  * "Conditional" syscalls
  *
  * What we want is __attribute__((weak,alias("sys_ni_syscall"))),