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Diffstat (limited to 'arch/parisc/math-emu/fpu.h')
| -rw-r--r-- | arch/parisc/math-emu/fpu.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/parisc/math-emu/fpu.h b/arch/parisc/math-emu/fpu.h new file mode 100644 index 000000000..dec951d40 --- /dev/null +++ b/arch/parisc/math-emu/fpu.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Linux/PA-RISC Project (http://www.parisc-linux.org/) + * + * Floating-point emulation code + * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org> + */ + +#ifndef _MACHINE_FPU_INCLUDED /* allows multiple inclusion */ +#define _MACHINE_FPU_INCLUDED + +#define PA83_FPU_FLAG 0x00000001 +#define PA89_FPU_FLAG 0x00000002 +#define PA2_0_FPU_FLAG 0x00000010 + +#define TIMEX_EXTEN_FLAG 0x00000004 + +#define ROLEX_EXTEN_FLAG 0x00000008 +#define COPR_FP 0x00000080 /* Floating point -- Coprocessor 0 */ +#define SFU_MPY_DIVIDE 0x00008000 /* Multiply/Divide __ SFU 0 */ + +#define EM_FPU_TYPE_OFFSET 272 + +/* version of EMULATION software for COPR,0,0 instruction */ +#define EMULATION_VERSION 4 + +/* + * The only way to differentiate between TIMEX and ROLEX (or PCX-S and PCX-T) + * is through the potential type field from the PDC_MODEL call. + * The following flags are used to assist this differentiation. + */ + +#define ROLEX_POTENTIAL_KEY_FLAGS PDC_MODEL_CPU_KEY_WORD_TO_IO +#define TIMEX_POTENTIAL_KEY_FLAGS (PDC_MODEL_CPU_KEY_QUAD_STORE | \ + PDC_MODEL_CPU_KEY_RECIP_SQRT) + +#endif /* ! _MACHINE_FPU_INCLUDED */ |