diff options
Diffstat (limited to 'arch/s390/include/asm/fpu/internal.h')
-rw-r--r-- | arch/s390/include/asm/fpu/internal.h | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/arch/s390/include/asm/fpu/internal.h b/arch/s390/include/asm/fpu/internal.h deleted file mode 100644 index d511c4cf5a..0000000000 --- a/arch/s390/include/asm/fpu/internal.h +++ /dev/null @@ -1,67 +0,0 @@ -/* 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/facility.h> -#include <asm/fpu/types.h> - -static inline bool cpu_has_vx(void) -{ - return likely(test_facility(129)); -} - -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 (cpu_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 (cpu_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 */ |