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Diffstat (limited to 'arch/arc/kernel/ptrace.c')
-rw-r--r--arch/arc/kernel/ptrace.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/arc/kernel/ptrace.c b/arch/arc/kernel/ptrace.c
index c6a81c58d0f3..333238564b67 100644
--- a/arch/arc/kernel/ptrace.c
+++ b/arch/arc/kernel/ptrace.c
@@ -40,7 +40,15 @@ static int genregs_get(struct task_struct *target,
offsetof(struct user_regs_struct, LOC), \
offsetof(struct user_regs_struct, LOC) + 4);
+#define REG_O_ZERO(LOC) \
+ if (!ret) \
+ ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, \
+ offsetof(struct user_regs_struct, LOC), \
+ offsetof(struct user_regs_struct, LOC) + 4);
+
+ REG_O_ZERO(pad);
REG_O_CHUNK(scratch, callee, ptregs);
+ REG_O_ZERO(pad2);
REG_O_CHUNK(callee, efa, cregs);
REG_O_CHUNK(efa, stop_pc, &target->thread.fault_address);
@@ -88,8 +96,10 @@ static int genregs_set(struct task_struct *target,
offsetof(struct user_regs_struct, LOC), \
offsetof(struct user_regs_struct, LOC) + 4);
- /* TBD: disallow updates to STATUS32, orig_r8 etc*/
- REG_IN_CHUNK(scratch, callee, ptregs); /* pt_regs[bta..orig_r8] */
+ REG_IGNORE_ONE(pad);
+ /* TBD: disallow updates to STATUS32 etc*/
+ REG_IN_CHUNK(scratch, pad2, ptregs); /* pt_regs[bta..sp] */
+ REG_IGNORE_ONE(pad2);
REG_IN_CHUNK(callee, efa, cregs); /* callee_regs[r25..r13] */
REG_IGNORE_ONE(efa); /* efa update invalid */
REG_IN_ONE(stop_pc, &ptregs->ret); /* stop_pc: PC update */