diff options
Diffstat (limited to 'arch/powerpc/kernel/ptrace.c')
-rw-r--r-- | arch/powerpc/kernel/ptrace.c | 38 |
1 files changed, 29 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index 3635be6..ef14988 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -704,32 +704,52 @@ void user_enable_single_step(struct task_struct *task) if (regs != NULL) { #if defined(CONFIG_40x) || defined(CONFIG_BOOKE) + task->thread.dbcr0 &= ~DBCR0_BT; task->thread.dbcr0 |= DBCR0_IDM | DBCR0_IC; regs->msr |= MSR_DE; #else + regs->msr &= ~MSR_BE; regs->msr |= MSR_SE; #endif } set_tsk_thread_flag(task, TIF_SINGLESTEP); } -void user_disable_single_step(struct task_struct *task) +void user_enable_block_step(struct task_struct *task) { struct pt_regs *regs = task->thread.regs; - -#if defined(CONFIG_BOOKE) - /* If DAC then do not single step, skip */ - if (task->thread.dabr) - return; + if (regs != NULL) { +#if defined(CONFIG_40x) || defined(CONFIG_BOOKE) + task->thread.dbcr0 &= ~DBCR0_IC; + task->thread.dbcr0 = DBCR0_IDM | DBCR0_BT; + regs->msr |= MSR_DE; +#else + regs->msr &= ~MSR_SE; + regs->msr |= MSR_BE; #endif + } + set_tsk_thread_flag(task, TIF_SINGLESTEP); +} + +void user_disable_single_step(struct task_struct *task) +{ + struct pt_regs *regs = task->thread.regs; if (regs != NULL) { -#if defined(CONFIG_40x) || defined(CONFIG_BOOKE) - task->thread.dbcr0 &= ~(DBCR0_IC | DBCR0_IDM); +#if defined(CONFIG_BOOKE) + /* If DAC don't clear DBCRO_IDM or MSR_DE */ + if (task->thread.dabr) + task->thread.dbcr0 &= ~(DBCR0_IC | DBCR0_BT); + else { + task->thread.dbcr0 &= ~(DBCR0_IC | DBCR0_BT | DBCR0_IDM); + regs->msr &= ~MSR_DE; + } +#elif defined(CONFIG_40x) + task->thread.dbcr0 &= ~(DBCR0_IC | DBCR0_BT | DBCR0_IDM); regs->msr &= ~MSR_DE; #else - regs->msr &= ~MSR_SE; + regs->msr &= ~(MSR_SE | MSR_BE); #endif } clear_tsk_thread_flag(task, TIF_SINGLESTEP); |