45 static void init_fp_ctx(struct task_struct *target)  in init_fp_ctx()  argument
47 	/* The target already has context */  in init_fp_ctx()
48 	if (tsk_used_math(target))  in init_fp_ctx()
52 	memset(&target->thread.fpu.fpr, ~0, sizeof(target->thread.fpu.fpr));  in init_fp_ctx()
53 	set_stopped_child_used_math(target);  in init_fp_ctx()
70 static int gpr_get(struct task_struct *target,  in gpr_get()  argument
75 	struct pt_regs *regs = task_pt_regs(target);  in gpr_get()
85 static int gpr_set(struct task_struct *target,  in gpr_set()  argument
94 	struct pt_regs *regs = task_pt_regs(target);  in gpr_set()
116 static int gfpr_get(struct task_struct *target, struct membuf *to)  in gfpr_get()  argument
118 	return membuf_write(to, &target->thread.fpu.fpr,  in gfpr_get()
122 static int gfpr_get_simd(struct task_struct *target, struct membuf *to)  in gfpr_get_simd()  argument
129 		fpr_val = get_fpr64(&target->thread.fpu.fpr[i], 0);  in gfpr_get_simd()
140 static int fpr_get(struct task_struct *target,  in fpr_get()  argument
146 	if (sizeof(target->thread.fpu.fpr[0]) == sizeof(elf_fpreg_t))  in fpr_get()
147 		r = gfpr_get(target, &to);  in fpr_get()
149 		r = gfpr_get_simd(target, &to);  in fpr_get()
151 	r = membuf_write(&to, &target->thread.fpu.fcc, sizeof(target->thread.fpu.fcc));  in fpr_get()
152 	r = membuf_write(&to, &target->thread.fpu.fcsr, sizeof(target->thread.fpu.fcsr));  in fpr_get()
157 static int gfpr_set(struct task_struct *target,  in gfpr_set()  argument
162 				  &target->thread.fpu.fpr,  in gfpr_set()
166 static int gfpr_set_simd(struct task_struct *target,  in gfpr_set_simd()  argument
180 		set_fpr64(&target->thread.fpu.fpr[i], 0, fpr_val);  in gfpr_set_simd()
190 static int fpr_set(struct task_struct *target,  in fpr_set()  argument
203 	init_fp_ctx(target);  in fpr_set()
205 	if (sizeof(target->thread.fpu.fpr[0]) == sizeof(elf_fpreg_t))  in fpr_set()
206 		err = gfpr_set(target, &pos, &count, &kbuf, &ubuf);  in fpr_set()
208 		err = gfpr_set_simd(target, &pos, &count, &kbuf, &ubuf);  in fpr_set()
213 				  &target->thread.fpu.fcc, fcc_start,  in fpr_set()
216 				  &target->thread.fpu.fcsr, fcsr_start,  in fpr_set()
222 static int cfg_get(struct task_struct *target,  in cfg_get()  argument
241 static int cfg_set(struct task_struct *target,  in cfg_set()  argument
364 static inline int read_user(struct task_struct *target, unsigned long addr,  in read_user()  argument
371 		tmp = task_pt_regs(target)->regs[addr];  in read_user()
374 		tmp = task_pt_regs(target)->orig_a0;  in read_user()
377 		tmp = task_pt_regs(target)->csr_era;  in read_user()
380 		tmp = task_pt_regs(target)->csr_badvaddr;  in read_user()
389 static inline int write_user(struct task_struct *target, unsigned long addr,  in write_user()  argument
394 		task_pt_regs(target)->regs[addr] = data;  in write_user()
397 		task_pt_regs(target)->orig_a0 = data;  in write_user()
400 		task_pt_regs(target)->csr_era = data;  in write_user()
403 		task_pt_regs(target)->csr_badvaddr = data;  in write_user()