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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/include/asm/fpstate.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/include/asm/fpstate.h')
-rw-r--r-- | arch/arm/include/asm/fpstate.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/arch/arm/include/asm/fpstate.h b/arch/arm/include/asm/fpstate.h new file mode 100644 index 000000000..e29d9c7a5 --- /dev/null +++ b/arch/arm/include/asm/fpstate.h @@ -0,0 +1,79 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * arch/arm/include/asm/fpstate.h + * + * Copyright (C) 1995 Russell King + */ + +#ifndef __ASM_ARM_FPSTATE_H +#define __ASM_ARM_FPSTATE_H + + +#ifndef __ASSEMBLY__ + +/* + * VFP storage area has: + * - FPEXC, FPSCR, FPINST and FPINST2. + * - 16 or 32 double precision data registers + * - an implementation-dependent word of state for FLDMX/FSTMX (pre-ARMv6) + * + * FPEXC will always be non-zero once the VFP has been used in this process. + */ + +struct vfp_hard_struct { +#ifdef CONFIG_VFPv3 + __u64 fpregs[32]; +#else + __u64 fpregs[16]; +#endif +#if __LINUX_ARM_ARCH__ < 6 + __u32 fpmx_state; +#endif + __u32 fpexc; + __u32 fpscr; + /* + * VFP implementation specific state + */ + __u32 fpinst; + __u32 fpinst2; + +#ifdef CONFIG_SMP + __u32 cpu; +#endif +}; + +union vfp_state { + struct vfp_hard_struct hard; +}; + +#define FP_HARD_SIZE 35 + +struct fp_hard_struct { + unsigned int save[FP_HARD_SIZE]; /* as yet undefined */ +}; + +#define FP_SOFT_SIZE 35 + +struct fp_soft_struct { + unsigned int save[FP_SOFT_SIZE]; /* undefined information */ +}; + +#define IWMMXT_SIZE 0x98 + +struct iwmmxt_struct { + unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)]; +}; + +union fp_state { + struct fp_hard_struct hard; + struct fp_soft_struct soft; +#ifdef CONFIG_IWMMXT + struct iwmmxt_struct iwmmxt; +#endif +}; + +#define FP_SIZE (sizeof(union fp_state) / sizeof(int)) + +#endif + +#endif |