linux/kernel/regset.c

// SPDX-License-Identifier: GPL-2.0-only
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/regset.h>

static int __regset_get(struct task_struct *target,
			const struct user_regset *regset,
			unsigned int size,
			void **data)
{ … }

int regset_get(struct task_struct *target,
	       const struct user_regset *regset,
	       unsigned int size,
	       void *data)
{ … }
EXPORT_SYMBOL(…);

int regset_get_alloc(struct task_struct *target,
		     const struct user_regset *regset,
		     unsigned int size,
		     void **data)
{ … }
EXPORT_SYMBOL(…);

/**
 * copy_regset_to_user - fetch a thread's user_regset data into user memory
 * @target:	thread to be examined
 * @view:	&struct user_regset_view describing user thread machine state
 * @setno:	index in @view->regsets
 * @offset:	offset into the regset data, in bytes
 * @size:	amount of data to copy, in bytes
 * @data:	user-mode pointer to copy into
 */
int copy_regset_to_user(struct task_struct *target,
			const struct user_regset_view *view,
			unsigned int setno,
			unsigned int offset, unsigned int size,
			void __user *data)
{ … }