50 static void init_fp_ctx(struct task_struct *target)  in init_fp_ctx()  argument
52 	/* The target already has context */  in init_fp_ctx()
53 	if (tsk_used_math(target))  in init_fp_ctx()
57 	memset(&target->thread.fpu.fpr, ~0, sizeof(target->thread.fpu.fpr));  in init_fp_ctx()
58 	set_stopped_child_used_math(target);  in init_fp_ctx()
75 static int gpr_get(struct task_struct *target,  in gpr_get()  argument
80 	struct pt_regs *regs = task_pt_regs(target);  in gpr_get()
90 static int gpr_set(struct task_struct *target,  in gpr_set()  argument
99 	struct pt_regs *regs = task_pt_regs(target);  in gpr_set()
121 static int gfpr_get(struct task_struct *target, struct membuf *to)  in gfpr_get()  argument
123 	return membuf_write(to, &target->thread.fpu.fpr,  in gfpr_get()
127 static int gfpr_get_simd(struct task_struct *target, struct membuf *to)  in gfpr_get_simd()  argument
134 		fpr_val = get_fpr64(&target->thread.fpu.fpr[i], 0);  in gfpr_get_simd()
145 static int fpr_get(struct task_struct *target,  in fpr_get()  argument
151 	save_fpu_regs(target);  in fpr_get()
153 	if (sizeof(target->thread.fpu.fpr[0]) == sizeof(elf_fpreg_t))  in fpr_get()
154 		r = gfpr_get(target, &to);  in fpr_get()
156 		r = gfpr_get_simd(target, &to);  in fpr_get()
158 	r = membuf_write(&to, &target->thread.fpu.fcc, sizeof(target->thread.fpu.fcc));  in fpr_get()
159 	r = membuf_write(&to, &target->thread.fpu.fcsr, sizeof(target->thread.fpu.fcsr));  in fpr_get()
164 static int gfpr_set(struct task_struct *target,  in gfpr_set()  argument
169 				  &target->thread.fpu.fpr,  in gfpr_set()
173 static int gfpr_set_simd(struct task_struct *target,  in gfpr_set_simd()  argument
187 		set_fpr64(&target->thread.fpu.fpr[i], 0, fpr_val);  in gfpr_set_simd()
197 static int fpr_set(struct task_struct *target,  in fpr_set()  argument
210 	init_fp_ctx(target);  in fpr_set()
212 	if (sizeof(target->thread.fpu.fpr[0]) == sizeof(elf_fpreg_t))  in fpr_set()
213 		err = gfpr_set(target, &pos, &count, &kbuf, &ubuf);  in fpr_set()
215 		err = gfpr_set_simd(target, &pos, &count, &kbuf, &ubuf);  in fpr_set()
220 				  &target->thread.fpu.fcc, fcc_start,  in fpr_set()
223 				  &target->thread.fpu.fcsr, fcsr_start,  in fpr_set()
229 static int cfg_get(struct task_struct *target,  in cfg_get()  argument
248 static int cfg_set(struct task_struct *target,  in cfg_set()  argument
258 static void copy_pad_fprs(struct task_struct *target,  in copy_pad_fprs()  argument
271 		membuf_write(to, &target->thread.fpu.fpr[i], cp_sz);  in copy_pad_fprs()
278 static int simd_get(struct task_struct *target,  in simd_get()  argument
284 	save_fpu_regs(target);  in simd_get()
286 	if (!tsk_used_math(target)) {  in simd_get()
288 		copy_pad_fprs(target, regset, &to, 0);  in simd_get()
289 	} else if (!test_tsk_thread_flag(target, TIF_LSX_CTX_LIVE)) {  in simd_get()
291 		copy_pad_fprs(target, regset, &to, 8);  in simd_get()
293 	} else if (!test_tsk_thread_flag(target, TIF_LASX_CTX_LIVE)) {  in simd_get()
295 		copy_pad_fprs(target, regset, &to, 16);  in simd_get()
297 	} else if (sizeof(target->thread.fpu.fpr[0]) == regset->size) {  in simd_get()
299 		membuf_write(&to, &target->thread.fpu.fpr, wr_size);  in simd_get()
302 		copy_pad_fprs(target, regset, &to, sizeof(target->thread.fpu.fpr[0]));  in simd_get()
308 static int simd_set(struct task_struct *target,  in simd_set()  argument
317 	init_fp_ctx(target);  in simd_set()
319 	if (sizeof(target->thread.fpu.fpr[0]) == regset->size) {  in simd_set()
322 					 &target->thread.fpu.fpr,  in simd_set()
327 			      sizeof(target->thread.fpu.fpr[0]));  in simd_set()
332 						  &target->thread.fpu.fpr[i],  in simd_set()
343 static int lbt_get(struct task_struct *target,  in lbt_get()  argument
349 	r = membuf_write(&to, &target->thread.lbt.scr0, sizeof(target->thread.lbt.scr0));  in lbt_get()
350 	r = membuf_write(&to, &target->thread.lbt.scr1, sizeof(target->thread.lbt.scr1));  in lbt_get()
351 	r = membuf_write(&to, &target->thread.lbt.scr2, sizeof(target->thread.lbt.scr2));  in lbt_get()
352 	r = membuf_write(&to, &target->thread.lbt.scr3, sizeof(target->thread.lbt.scr3));  in lbt_get()
353 	r = membuf_write(&to, &target->thread.lbt.eflags, sizeof(u32));  in lbt_get()
354 	r = membuf_write(&to, &target->thread.fpu.ftop, sizeof(u32));  in lbt_get()
359 static int lbt_set(struct task_struct *target,  in lbt_set()  argument
365 	const int eflags_start = 4 * sizeof(target->thread.lbt.scr0);  in lbt_set()
369 				  &target->thread.lbt.scr0,  in lbt_set()
370 				  0, 4 * sizeof(target->thread.lbt.scr0));  in lbt_set()
372 				  &target->thread.lbt.eflags,  in lbt_set()
375 				  &target->thread.fpu.ftop,  in lbt_set()
671 static int hw_break_get(struct task_struct *target,  in hw_break_get()  argument
690 		ret = ptrace_hbp_get_addr(note_type, target, idx, &addr);  in hw_break_get()
694 		ret = ptrace_hbp_get_mask(note_type, target, idx, &mask);  in hw_break_get()
698 		ret = ptrace_hbp_get_ctrl(note_type, target, idx, &ctrl);  in hw_break_get()
712 static int hw_break_set(struct task_struct *target,  in hw_break_set()  argument
737 		ret = ptrace_hbp_set_addr(note_type, target, idx, addr);  in hw_break_set()
750 		ret = ptrace_hbp_set_mask(note_type, target, idx, mask);  in hw_break_set()
760 		ret = ptrace_hbp_set_ctrl(note_type, target, idx, ctrl);  in hw_break_set()
953 static inline int read_user(struct task_struct *target, unsigned long addr,  in read_user()  argument
960 		tmp = task_pt_regs(target)->regs[addr];  in read_user()
963 		tmp = task_pt_regs(target)->orig_a0;  in read_user()
966 		tmp = task_pt_regs(target)->csr_era;  in read_user()
969 		tmp = task_pt_regs(target)->csr_badvaddr;  in read_user()
978 static inline int write_user(struct task_struct *target, unsigned long addr,  in write_user()  argument
983 		task_pt_regs(target)->regs[addr] = data;  in write_user()
986 		task_pt_regs(target)->orig_a0 = data;  in write_user()
989 		task_pt_regs(target)->csr_era = data;  in write_user()
992 		task_pt_regs(target)->csr_badvaddr = data;  in write_user()