Contributors: 10
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Christophe Leroy |
499 |
88.01% |
1 |
6.67% |
| Roland McGrath |
26 |
4.59% |
3 |
20.00% |
| Al Viro |
17 |
3.00% |
1 |
6.67% |
| Cyril Bur |
8 |
1.41% |
3 |
20.00% |
| Michael Neuling |
6 |
1.06% |
2 |
13.33% |
| Anshuman Khandual |
4 |
0.71% |
1 |
6.67% |
| Benjamin Herrenschmidt |
3 |
0.53% |
1 |
6.67% |
| Linus Torvalds (pre-git) |
2 |
0.35% |
1 |
6.67% |
| David Howells |
1 |
0.18% |
1 |
6.67% |
| Michael Ellerman |
1 |
0.18% |
1 |
6.67% |
| Total |
567 |
|
15 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
#include <linux/regset.h>
#include <asm/switch_to.h>
#include "ptrace-decl.h"
/*
* Regardless of transactions, 'fp_state' holds the current running
* value of all FPR registers and 'ckfp_state' holds the last checkpointed
* value of all FPR registers for the current transaction.
*
* Userspace interface buffer layout:
*
* struct data {
* u64 fpr[32];
* u64 fpscr;
* };
*/
int fpr_get(struct task_struct *target, const struct user_regset *regset,
struct membuf to)
{
u64 buf[33];
int i;
flush_fp_to_thread(target);
/* copy to local buffer then write that out */
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.TS_FPR(i);
buf[32] = target->thread.fp_state.fpscr;
return membuf_write(&to, buf, 33 * sizeof(u64));
}
/*
* Regardless of transactions, 'fp_state' holds the current running
* value of all FPR registers and 'ckfp_state' holds the last checkpointed
* value of all FPR registers for the current transaction.
*
* Userspace interface buffer layout:
*
* struct data {
* u64 fpr[32];
* u64 fpscr;
* };
*
*/
int fpr_set(struct task_struct *target, const struct user_regset *regset,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
{
u64 buf[33];
int i;
flush_fp_to_thread(target);
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.TS_FPR(i);
buf[32] = target->thread.fp_state.fpscr;
/* copy to local buffer then write that out */
i = user_regset_copyin(&pos, &count, &kbuf, &ubuf, buf, 0, -1);
if (i)
return i;
for (i = 0; i < 32 ; i++)
target->thread.TS_FPR(i) = buf[i];
target->thread.fp_state.fpscr = buf[32];
return 0;
}
/*
* Currently to set and get all the vsx state, you need to call
* the fp and VMX calls as well. This only get/sets the lower 32
* 128bit VSX registers.
*/
int vsr_active(struct task_struct *target, const struct user_regset *regset)
{
flush_vsx_to_thread(target);
return target->thread.used_vsr ? regset->n : 0;
}
/*
* Regardless of transactions, 'fp_state' holds the current running
* value of all FPR registers and 'ckfp_state' holds the last
* checkpointed value of all FPR registers for the current
* transaction.
*
* Userspace interface buffer layout:
*
* struct data {
* u64 vsx[32];
* };
*/
int vsr_get(struct task_struct *target, const struct user_regset *regset,
struct membuf to)
{
u64 buf[32];
int i;
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_vsx_to_thread(target);
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET];
return membuf_write(&to, buf, 32 * sizeof(double));
}
/*
* Regardless of transactions, 'fp_state' holds the current running
* value of all FPR registers and 'ckfp_state' holds the last
* checkpointed value of all FPR registers for the current
* transaction.
*
* Userspace interface buffer layout:
*
* struct data {
* u64 vsx[32];
* };
*/
int vsr_set(struct task_struct *target, const struct user_regset *regset,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
{
u64 buf[32];
int ret, i;
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_vsx_to_thread(target);
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET];
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
buf, 0, 32 * sizeof(double));
if (!ret)
for (i = 0; i < 32 ; i++)
target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i];
return ret;
}