171 static unsigned long get_user_msr(struct task_struct *task)  in get_user_msr()  argument
173 	return task->thread.regs->msr | task->thread.fpexc_mode;  in get_user_msr()
176 static int set_user_msr(struct task_struct *task, unsigned long msr)  in set_user_msr()  argument
178 	task->thread.regs->msr &= ~MSR_DEBUGCHANGE;  in set_user_msr()
179 	task->thread.regs->msr |= msr & MSR_DEBUGCHANGE;  in set_user_msr()
184 static int get_user_dscr(struct task_struct *task, unsigned long *data)  in get_user_dscr()  argument
186 	*data = task->thread.dscr;  in get_user_dscr()
190 static int set_user_dscr(struct task_struct *task, unsigned long dscr)  in set_user_dscr()  argument
192 	task->thread.dscr = dscr;  in set_user_dscr()
193 	task->thread.dscr_inherit = 1;  in set_user_dscr()
197 static int get_user_dscr(struct task_struct *task, unsigned long *data)  in get_user_dscr()  argument
202 static int set_user_dscr(struct task_struct *task, unsigned long dscr)  in set_user_dscr()  argument
212 static int set_user_trap(struct task_struct *task, unsigned long trap)  in set_user_trap()  argument
214 	task->thread.regs->trap = trap & 0xfff0;  in set_user_trap()
221 int ptrace_get_reg(struct task_struct *task, int regno, unsigned long *data)  in ptrace_get_reg()  argument
223 	if ((task->thread.regs == NULL) || !data)  in ptrace_get_reg()
227 		*data = get_user_msr(task);  in ptrace_get_reg()
232 		return get_user_dscr(task, data);  in ptrace_get_reg()
235 		*data = ((unsigned long *)task->thread.regs)[regno];  in ptrace_get_reg()
245 int ptrace_put_reg(struct task_struct *task, int regno, unsigned long data)  in ptrace_put_reg()  argument
247 	if (task->thread.regs == NULL)  in ptrace_put_reg()
251 		return set_user_msr(task, data);  in ptrace_put_reg()
253 		return set_user_trap(task, data);  in ptrace_put_reg()
255 		return set_user_dscr(task, data);  in ptrace_put_reg()
258 		((unsigned long *)task->thread.regs)[regno] = data;  in ptrace_put_reg()
842 const struct user_regset_view *task_user_regset_view(struct task_struct *task)  in task_user_regset_view()  argument
845 	if (test_tsk_thread_flag(task, TIF_32BIT))  in task_user_regset_view()
852 void user_enable_single_step(struct task_struct *task)  in user_enable_single_step()  argument
854 	struct pt_regs *regs = task->thread.regs;  in user_enable_single_step()
858 		task->thread.debug.dbcr0 &= ~DBCR0_BT;  in user_enable_single_step()
859 		task->thread.debug.dbcr0 |= DBCR0_IDM | DBCR0_IC;  in user_enable_single_step()
866 	set_tsk_thread_flag(task, TIF_SINGLESTEP);  in user_enable_single_step()
869 void user_enable_block_step(struct task_struct *task)  in user_enable_block_step()  argument
871 	struct pt_regs *regs = task->thread.regs;  in user_enable_block_step()
875 		task->thread.debug.dbcr0 &= ~DBCR0_IC;  in user_enable_block_step()
876 		task->thread.debug.dbcr0 = DBCR0_IDM | DBCR0_BT;  in user_enable_block_step()
883 	set_tsk_thread_flag(task, TIF_SINGLESTEP);  in user_enable_block_step()
886 void user_disable_single_step(struct task_struct *task)  in user_disable_single_step()  argument
888 	struct pt_regs *regs = task->thread.regs;  in user_disable_single_step()
898 		task->thread.debug.dbcr0 &= ~(DBCR0_IC|DBCR0_BT);  in user_disable_single_step()
902 		if (!DBCR_ACTIVE_EVENTS(task->thread.debug.dbcr0,  in user_disable_single_step()
903 					task->thread.debug.dbcr1)) {  in user_disable_single_step()
907 			task->thread.debug.dbcr0 &= ~DBCR0_IDM;  in user_disable_single_step()
914 	clear_tsk_thread_flag(task, TIF_SINGLESTEP);  in user_disable_single_step()
935 static int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,  in ptrace_set_debugreg()  argument
940 	struct thread_struct *thread = &(task->thread);  in ptrace_set_debugreg()
1011 					       ptrace_triggered, NULL, task);  in ptrace_set_debugreg()
1018 	task->thread.hw_brk = hw_brk;  in ptrace_set_debugreg()
1026 	task->thread.debug.dac1 = data & ~0x3UL;  in ptrace_set_debugreg()
1028 	if (task->thread.debug.dac1 == 0) {  in ptrace_set_debugreg()
1029 		dbcr_dac(task) &= ~(DBCR_DAC1R | DBCR_DAC1W);  in ptrace_set_debugreg()
1030 		if (!DBCR_ACTIVE_EVENTS(task->thread.debug.dbcr0,  in ptrace_set_debugreg()
1031 					task->thread.debug.dbcr1)) {  in ptrace_set_debugreg()
1032 			task->thread.regs->msr &= ~MSR_DE;  in ptrace_set_debugreg()
1033 			task->thread.debug.dbcr0 &= ~DBCR0_IDM;  in ptrace_set_debugreg()
1045 	task->thread.debug.dbcr0 |= DBCR0_IDM;  in ptrace_set_debugreg()
1049 	dbcr_dac(task) &= ~(DBCR_DAC1R|DBCR_DAC1W);  in ptrace_set_debugreg()
1051 		dbcr_dac(task) |= DBCR_DAC1R;  in ptrace_set_debugreg()
1053 		dbcr_dac(task) |= DBCR_DAC1W;  in ptrace_set_debugreg()
1054 	task->thread.regs->msr |= MSR_DE;  in ptrace_set_debugreg()