diff options
| -rw-r--r-- | arch/powerpc/kernel/ptrace.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index 05b7dd217f6..18447c4fbad 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -1497,9 +1497,14 @@ long arch_ptrace(struct task_struct *child, long request, if (index < PT_FPR0) { tmp = ptrace_get_reg(child, (int) index); } else { + unsigned int fpidx = index - PT_FPR0; + flush_fp_to_thread(child); - tmp = ((unsigned long *)child->thread.fpr) - [TS_FPRWIDTH * (index - PT_FPR0)]; + if (fpidx < (PT_FPSCR - PT_FPR0)) + tmp = ((unsigned long *)child->thread.fpr) + [fpidx * TS_FPRWIDTH]; + else + tmp = child->thread.fpscr.val; } ret = put_user(tmp, datalp); break; @@ -1525,9 +1530,14 @@ long arch_ptrace(struct task_struct *child, long request, if (index < PT_FPR0) { ret = ptrace_put_reg(child, index, data); } else { + unsigned int fpidx = index - PT_FPR0; + flush_fp_to_thread(child); - ((unsigned long *)child->thread.fpr) - [TS_FPRWIDTH * (index - PT_FPR0)] = data; + if (fpidx < (PT_FPSCR - PT_FPR0)) + ((unsigned long *)child->thread.fpr) + [fpidx * TS_FPRWIDTH] = data; + else + child->thread.fpscr.val = data; ret = 0; } break; |