cregit-Linux how code gets into the kernel

Release 4.14 arch/ia64/include/uapi/asm/fpu.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _ASM_IA64_FPU_H

#define _ASM_IA64_FPU_H

/*
 * Copyright (C) 1998, 1999, 2002, 2003 Hewlett-Packard Co
 *      David Mosberger-Tang <davidm@hpl.hp.com>
 */

#include <linux/types.h>

/* floating point status register: */

#define FPSR_TRAP_VD	(1 << 0)	
/* invalid op trap disabled */

#define FPSR_TRAP_DD	(1 << 1)	
/* denormal trap disabled */

#define FPSR_TRAP_ZD	(1 << 2)	
/* zero-divide trap disabled */

#define FPSR_TRAP_OD	(1 << 3)	
/* overflow trap disabled */

#define FPSR_TRAP_UD	(1 << 4)	
/* underflow trap disabled */

#define FPSR_TRAP_ID	(1 << 5)	
/* inexact trap disabled */

#define FPSR_S0(x)	((x) <<  6)

#define FPSR_S1(x)	((x) << 19)

#define FPSR_S2(x)	(__IA64_UL(x) << 32)

#define FPSR_S3(x)	(__IA64_UL(x) << 45)

/* floating-point status field controls: */

#define FPSF_FTZ	(1 << 0)		
/* flush-to-zero */

#define FPSF_WRE	(1 << 1)		
/* widest-range exponent */

#define FPSF_PC(x)	(((x) & 0x3) << 2)	
/* precision control */

#define FPSF_RC(x)	(((x) & 0x3) << 4)	
/* rounding control */

#define FPSF_TD		(1 << 6)		
/* trap disabled */

/* floating-point status field flags: */

#define FPSF_V		(1 <<  7)		
/* invalid operation flag */

#define FPSF_D		(1 <<  8)		
/* denormal/unnormal operand flag */

#define FPSF_Z		(1 <<  9)		
/* zero divide (IEEE) flag */

#define FPSF_O		(1 << 10)		
/* overflow (IEEE) flag */

#define FPSF_U		(1 << 11)		
/* underflow (IEEE) flag */

#define FPSF_I		(1 << 12)		
/* inexact (IEEE) flag) */

/* floating-point rounding control: */

#define FPRC_NEAREST	0x0

#define FPRC_NEGINF	0x1

#define FPRC_POSINF	0x2

#define FPRC_TRUNC	0x3


#define FPSF_DEFAULT	(FPSF_PC (0x3) | FPSF_RC (FPRC_NEAREST))

/* This default value is the same as HP-UX uses.  Don't change it
   without a very good reason.  */

#define FPSR_DEFAULT	(FPSR_TRAP_VD | FPSR_TRAP_DD | FPSR_TRAP_ZD     \
                         | FPSR_TRAP_OD | FPSR_TRAP_UD | FPSR_TRAP_ID   \
                         | FPSR_S0 (FPSF_DEFAULT)                       \
                         | FPSR_S1 (FPSF_DEFAULT | FPSF_TD | FPSF_WRE)  \
                         | FPSR_S2 (FPSF_DEFAULT | FPSF_TD)             \
                         | FPSR_S3 (FPSF_DEFAULT | FPSF_TD))

# ifndef __ASSEMBLY__


struct ia64_fpreg {
	union {
		
unsigned long bits[2];
		
long double __dummy;	/* force 16-byte alignment */
	
} u;
};

# endif /* __ASSEMBLY__ */

#endif /* _ASM_IA64_FPU_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)18094.74%125.00%
David Mosberger-Tang63.16%125.00%
Aurelien Jarno31.58%125.00%
Greg Kroah-Hartman10.53%125.00%
Total190100.00%4100.00%
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