Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Hendrik Brueckner |
202 |
74.81% |
4 |
28.57% |
| Martin Schwidefsky |
39 |
14.44% |
5 |
35.71% |
| Linus Torvalds (pre-git) |
16 |
5.93% |
3 |
21.43% |
| Heiko Carstens |
12 |
4.44% |
1 |
7.14% |
| Greg Kroah-Hartman |
1 |
0.37% |
1 |
7.14% |
| Total |
270 |
|
14 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* FPU state and register content conversion primitives
*
* Copyright IBM Corp. 2015
* Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
*/
#ifndef _ASM_S390_FPU_INTERNAL_H
#define _ASM_S390_FPU_INTERNAL_H
#include <linux/string.h>
#include <asm/ctl_reg.h>
#include <asm/fpu/types.h>
static inline void save_vx_regs(__vector128 *vxrs)
{
asm volatile(
" la 1,%0\n"
" .word 0xe70f,0x1000,0x003e\n" /* vstm 0,15,0(1) */
" .word 0xe70f,0x1100,0x0c3e\n" /* vstm 16,31,256(1) */
: "=Q" (*(struct vx_array *) vxrs) : : "1");
}
static inline void convert_vx_to_fp(freg_t *fprs, __vector128 *vxrs)
{
int i;
for (i = 0; i < __NUM_FPRS; i++)
fprs[i].ui = vxrs[i].high;
}
static inline void convert_fp_to_vx(__vector128 *vxrs, freg_t *fprs)
{
int i;
for (i = 0; i < __NUM_FPRS; i++)
vxrs[i].high = fprs[i].ui;
}
static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu)
{
fpregs->pad = 0;
fpregs->fpc = fpu->fpc;
if (MACHINE_HAS_VX)
convert_vx_to_fp((freg_t *)&fpregs->fprs, fpu->vxrs);
else
memcpy((freg_t *)&fpregs->fprs, fpu->fprs,
sizeof(fpregs->fprs));
}
static inline void fpregs_load(_s390_fp_regs *fpregs, struct fpu *fpu)
{
fpu->fpc = fpregs->fpc;
if (MACHINE_HAS_VX)
convert_fp_to_vx(fpu->vxrs, (freg_t *)&fpregs->fprs);
else
memcpy(fpu->fprs, (freg_t *)&fpregs->fprs,
sizeof(fpregs->fprs));
}
#endif /* _ASM_S390_FPU_INTERNAL_H */