1 files changed, 7 insertions, 0 deletions

diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h
index 4f5da948a777..a3186f2bb8a0 100644
--- a/arch/mips/include/asm/ptrace.h
+++ b/arch/mips/include/asm/ptrace.h
@@ -49,6 +49,7 @@ static inline long regs_return_value(struct pt_regs *regs)
 
 #define instruction_pointer(regs) ((regs)->cp0_epc)
 #define profile_pc(regs) instruction_pointer(regs)
+#define user_stack_pointer(r) ((r)->regs[29])
 
 extern asmlinkage void syscall_trace_enter(struct pt_regs *regs);
 extern asmlinkage void syscall_trace_leave(struct pt_regs *regs);
@@ -61,4 +62,10 @@ static inline void die_if_kernel(const char *str, struct pt_regs *regs)
                 die(str, regs);
 }
 
+#define current_pt_regs()                                               \
+({                                                                      \
+        unsigned long sp = (unsigned long)__builtin_frame_address(0);   \
+        (struct pt_regs *)((sp | (THREAD_SIZE - 1)) + 1 - 32) - 1;      \
+})
+
 #endif /* _ASM_PTRACE_H */