diff options
-rw-r--r-- | arch/alpha/include/asm/ptrace.h | 1 | ||||
-rw-r--r-- | arch/alpha/kernel/ptrace.c | 59 |
2 files changed, 13 insertions, 47 deletions
diff --git a/arch/alpha/include/asm/ptrace.h b/arch/alpha/include/asm/ptrace.h index 32c7a5c..65cf3e2 100644 --- a/arch/alpha/include/asm/ptrace.h +++ b/arch/alpha/include/asm/ptrace.h @@ -68,6 +68,7 @@ struct switch_stack { #ifdef __KERNEL__ +#define arch_has_single_step() (1) #define user_mode(regs) (((regs)->ps & 8) != 0) #define instruction_pointer(regs) ((regs)->pc) #define profile_pc(regs) instruction_pointer(regs) diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c index e072041..9acadc6 100644 --- a/arch/alpha/kernel/ptrace.c +++ b/arch/alpha/kernel/ptrace.c @@ -249,6 +249,17 @@ ptrace_cancel_bpt(struct task_struct * child) return (nsaved != 0); } +void user_enable_single_step(struct task_struct *child) +{ + /* Mark single stepping. */ + task_thread_info(child)->bpt_nsaved = -1; +} + +void user_disable_single_step(struct task_struct *child) +{ + ptrace_cancel_bpt(child); +} + /* * Called by kernel/ptrace.c when detaching.. * @@ -256,7 +267,7 @@ ptrace_cancel_bpt(struct task_struct * child) */ void ptrace_disable(struct task_struct *child) { - ptrace_cancel_bpt(child); + user_disable_single_step(child); } long arch_ptrace(struct task_struct *child, long request, long addr, long data) @@ -295,52 +306,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) DBG(DBG_MEM, ("poke $%ld<-%#lx\n", addr, data)); ret = put_reg(child, addr, data); break; - - case PTRACE_SYSCALL: - /* continue and stop at next (return from) syscall */ - case PTRACE_CONT: /* restart after signal. */ - ret = -EIO; - if (!valid_signal(data)) - break; - if (request == PTRACE_SYSCALL) - set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - else - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - /* make sure single-step breakpoint is gone. */ - ptrace_cancel_bpt(child); - wake_up_process(child); - ret = 0; - break; - - /* - * Make the child exit. Best I can do is send it a sigkill. - * perhaps it should be put in the status that it wants to - * exit. - */ - case PTRACE_KILL: - ret = 0; - if (child->exit_state == EXIT_ZOMBIE) - break; - child->exit_code = SIGKILL; - /* make sure single-step breakpoint is gone. */ - ptrace_cancel_bpt(child); - wake_up_process(child); - break; - - case PTRACE_SINGLESTEP: /* execute single instruction. */ - ret = -EIO; - if (!valid_signal(data)) - break; - /* Mark single stepping. */ - task_thread_info(child)->bpt_nsaved = -1; - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - wake_up_process(child); - /* give it a chance to run. */ - ret = 0; - break; - default: ret = ptrace_request(child, request, addr, data); break; |