1 // SPDX-License-Identifier: GPL-2.0-or-later
3 #include <linux/regset.h>
5 #include <asm/switch_to.h>
7 #include "ptrace-decl.h"
10 * For get_evrregs/set_evrregs functions 'data' has the following layout:
19 int evr_active(struct task_struct *target, const struct user_regset *regset)
21 flush_spe_to_thread(target);
22 return target->thread.used_spe ? regset->n : 0;
25 int evr_get(struct task_struct *target, const struct user_regset *regset,
28 flush_spe_to_thread(target);
30 membuf_write(&to, &target->thread.evr, sizeof(target->thread.evr));
32 BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
33 offsetof(struct thread_struct, spefscr));
35 return membuf_write(&to, &target->thread.acc,
36 sizeof(u64) + sizeof(u32));
39 int evr_set(struct task_struct *target, const struct user_regset *regset,
40 unsigned int pos, unsigned int count,
41 const void *kbuf, const void __user *ubuf)
45 flush_spe_to_thread(target);
47 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
49 0, sizeof(target->thread.evr));
51 BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
52 offsetof(struct thread_struct, spefscr));
55 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
57 sizeof(target->thread.evr), -1);