Contributors: 2
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Christophe Leroy |
272 |
95.10% |
1 |
50.00% |
| Al Viro |
14 |
4.90% |
1 |
50.00% |
| Total |
286 |
|
2 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
#include <linux/regset.h>
#include <asm/switch_to.h>
#include "ptrace-decl.h"
/*
* For get_evrregs/set_evrregs functions 'data' has the following layout:
*
* struct {
* u32 evr[32];
* u64 acc;
* u32 spefscr;
* }
*/
int evr_active(struct task_struct *target, const struct user_regset *regset)
{
flush_spe_to_thread(target);
return target->thread.used_spe ? regset->n : 0;
}
int evr_get(struct task_struct *target, const struct user_regset *regset,
struct membuf to)
{
flush_spe_to_thread(target);
membuf_write(&to, &target->thread.evr, sizeof(target->thread.evr));
BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
offsetof(struct thread_struct, spefscr));
return membuf_write(&to, &target->thread.acc,
sizeof(u64) + sizeof(u32));
}
int evr_set(struct task_struct *target, const struct user_regset *regset,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
{
int ret;
flush_spe_to_thread(target);
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
&target->thread.evr,
0, sizeof(target->thread.evr));
BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
offsetof(struct thread_struct, spefscr));
if (!ret)
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
&target->thread.acc,
sizeof(target->thread.evr), -1);
return ret;
}