diff options
Diffstat (limited to 'arch/powerpc/kernel/ptrace.c')
| -rw-r--r-- | arch/powerpc/kernel/ptrace.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index c9c330d35c1..dd4837c4a68 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -75,10 +75,15 @@ int ptrace_put_reg(struct task_struct *task, int regno, unsigned long data) if (task->thread.regs == NULL) return -EIO; - if (regno <= PT_MAX_PUT_REG) { + if (regno <= PT_MAX_PUT_REG || regno == PT_TRAP) { if (regno == PT_MSR) data = (data & MSR_DEBUGCHANGE) | (task->thread.regs->msr & ~MSR_DEBUGCHANGE); + /* We prevent mucking around with the reserved area of trap + * which are used internally by the kernel + */ + if (regno == PT_TRAP) + data &= 0xfff0; ((unsigned long *)task->thread.regs)[regno] = data; return 0; } @@ -409,8 +414,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) break; CHECK_FULL_REGS(child->thread.regs); - if (index == PT_ORIG_R3) - break; if (index < PT_FPR0) { ret = ptrace_put_reg(child, index, data); } else { |