Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
// 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;
|
|
}
|