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MIPS: math-emu: Use __BITFIELD_FIELD to eleminate redundant definitions.

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Union _ieee754sp was even duplicated even though there are no endian
dependencies in it all.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2014-04-16 00:40:02 +02:00
parent 64a17a0ff1
commit f80cc08d78
1 changed files with 23 additions and 63 deletions
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86
arch/mips/math-emu/ieee754.h
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@ -27,6 +27,7 @@
#include <asm/byteorder.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <asm/bitfield.h>
/*
* Not very pretty, but the Linux kernel's normal va_list definition
@ -36,60 +37,31 @@
#include <stdarg.h>
#endif
#ifdef __LITTLE_ENDIAN
struct ieee754dp_konst {
unsigned mantlo:32;
unsigned manthi:20;
unsigned bexp:11;
unsigned sign:1;
};
struct ieee754sp_konst {
unsigned mant:23;
unsigned bexp:8;
unsigned sign:1;
__BITFIELD_FIELD(unsigned sign:1,
__BITFIELD_FIELD(unsigned bexp:11,
__BITFIELD_FIELD(unsigned manthi:20,
__BITFIELD_FIELD(unsigned mantlo:32,
;))))
};
typedef union _ieee754dp {
struct ieee754dp_konst oparts;
struct {
u64 mant:52;
unsigned int bexp:11;
unsigned int sign:1;
} parts;
u64 bits;
double d;
} ieee754dp;
typedef union _ieee754sp {
struct ieee754sp_konst parts;
float f;
u32 bits;
} ieee754sp;
#endif
#ifdef __BIG_ENDIAN
struct ieee754dp_konst {
unsigned sign:1;
unsigned bexp:11;
unsigned manthi:20;
unsigned mantlo:32;
};
typedef union _ieee754dp {
struct ieee754dp_konst oparts;
struct {
unsigned int sign:1;
unsigned int bexp:11;
u64 mant:52;
__BITFIELD_FIELD(unsigned int sign:1,
__BITFIELD_FIELD(unsigned int bexp:11,
__BITFIELD_FIELD(u64 mant:52,
;)))
} parts;
double d;
u64 bits;
} ieee754dp;
struct ieee754sp_konst {
unsigned sign:1;
unsigned bexp:8;
unsigned mant:23;
__BITFIELD_FIELD(unsigned sign:1,
__BITFIELD_FIELD(unsigned bexp:8,
__BITFIELD_FIELD(unsigned mant:23,
;)))
};
typedef union _ieee754sp {
@ -97,7 +69,6 @@ typedef union _ieee754sp {
float f;
u32 bits;
} ieee754sp;
#endif
/*
* single precision (often aka float)
@ -307,26 +278,15 @@ char *ieee754dp_tstr(ieee754dp x, int prec, int fmt, int af);
* The control status register
*/
struct _ieee754_csr {
#ifdef __BIG_ENDIAN
unsigned pad0:7;
unsigned nod:1; /* set 1 for no denormalised numbers */
unsigned c:1; /* condition */
unsigned pad1:5;
unsigned cx:6; /* exceptions this operation */
unsigned mx:5; /* exception enable mask */
unsigned sx:5; /* exceptions total */
unsigned rm:2; /* current rounding mode */
#endif
#ifdef __LITTLE_ENDIAN
unsigned rm:2; /* current rounding mode */
unsigned sx:5; /* exceptions total */
unsigned mx:5; /* exception enable mask */
unsigned cx:6; /* exceptions this operation */
unsigned pad1:5;
unsigned c:1; /* condition */
unsigned nod:1; /* set 1 for no denormalised numbers */
unsigned pad0:7;
#endif
__BITFIELD_FIELD(unsigned pad0:7,
__BITFIELD_FIELD(unsigned nod:1, /* set 1 for no denormalised numbers */
__BITFIELD_FIELD(unsigned c:1, /* condition */
__BITFIELD_FIELD(unsigned pad1:5,
__BITFIELD_FIELD(unsigned cx:6, /* exceptions this operation */
__BITFIELD_FIELD(unsigned mx:5, /* exception enable mask */
__BITFIELD_FIELD(unsigned sx:5, /* exceptions total */
__BITFIELD_FIELD(unsigned rm:2, /* current rounding mode */
;))))))))
};
#define ieee754_csr (*(struct _ieee754_csr *)(&current->thread.fpu.fcr31))