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67 lines
2.2 KiB
67 lines
2.2 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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#ifndef _ASM_IA64_FPU_H |
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#define _ASM_IA64_FPU_H |
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/* |
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* Copyright (C) 1998, 1999, 2002, 2003 Hewlett-Packard Co |
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* David Mosberger-Tang <[email protected]> |
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*/ |
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#include <linux/types.h> |
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/* floating point status register: */ |
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#define FPSR_TRAP_VD (1 << 0) /* invalid op trap disabled */ |
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#define FPSR_TRAP_DD (1 << 1) /* denormal trap disabled */ |
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#define FPSR_TRAP_ZD (1 << 2) /* zero-divide trap disabled */ |
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#define FPSR_TRAP_OD (1 << 3) /* overflow trap disabled */ |
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#define FPSR_TRAP_UD (1 << 4) /* underflow trap disabled */ |
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#define FPSR_TRAP_ID (1 << 5) /* inexact trap disabled */ |
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#define FPSR_S0(x) ((x) << 6) |
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#define FPSR_S1(x) ((x) << 19) |
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#define FPSR_S2(x) (__IA64_UL(x) << 32) |
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#define FPSR_S3(x) (__IA64_UL(x) << 45) |
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/* floating-point status field controls: */ |
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#define FPSF_FTZ (1 << 0) /* flush-to-zero */ |
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#define FPSF_WRE (1 << 1) /* widest-range exponent */ |
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#define FPSF_PC(x) (((x) & 0x3) << 2) /* precision control */ |
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#define FPSF_RC(x) (((x) & 0x3) << 4) /* rounding control */ |
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#define FPSF_TD (1 << 6) /* trap disabled */ |
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/* floating-point status field flags: */ |
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#define FPSF_V (1 << 7) /* invalid operation flag */ |
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#define FPSF_D (1 << 8) /* denormal/unnormal operand flag */ |
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#define FPSF_Z (1 << 9) /* zero divide (IEEE) flag */ |
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#define FPSF_O (1 << 10) /* overflow (IEEE) flag */ |
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#define FPSF_U (1 << 11) /* underflow (IEEE) flag */ |
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#define FPSF_I (1 << 12) /* inexact (IEEE) flag) */ |
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/* floating-point rounding control: */ |
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#define FPRC_NEAREST 0x0 |
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#define FPRC_NEGINF 0x1 |
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#define FPRC_POSINF 0x2 |
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#define FPRC_TRUNC 0x3 |
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#define FPSF_DEFAULT (FPSF_PC (0x3) | FPSF_RC (FPRC_NEAREST)) |
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/* This default value is the same as HP-UX uses. Don't change it |
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without a very good reason. */ |
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#define FPSR_DEFAULT (FPSR_TRAP_VD | FPSR_TRAP_DD | FPSR_TRAP_ZD \ |
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| FPSR_TRAP_OD | FPSR_TRAP_UD | FPSR_TRAP_ID \ |
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| FPSR_S0 (FPSF_DEFAULT) \ |
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| FPSR_S1 (FPSF_DEFAULT | FPSF_TD | FPSF_WRE) \ |
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| FPSR_S2 (FPSF_DEFAULT | FPSF_TD) \ |
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| FPSR_S3 (FPSF_DEFAULT | FPSF_TD)) |
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# ifndef __ASSEMBLY__ |
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struct ia64_fpreg { |
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union { |
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unsigned long bits[2]; |
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long double __dummy; /* force 16-byte alignment */ |
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} u; |
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}; |
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# endif /* __ASSEMBLY__ */ |
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#endif /* _ASM_IA64_FPU_H */
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