1 files changed, 92 insertions, 230 deletions

diff --git a/arch/mips/math-emu/ieee754.h b/arch/mips/math-emu/ieee754.h
index 22796e012060..43c4fb522ac2 100644
--- a/arch/mips/math-emu/ieee754.h
+++ b/arch/mips/math-emu/ieee754.h
@@ -13,7 +13,7 @@
  *
  *  You should have received a copy of the GNU General Public License along
  *  with this program; if not, write to the Free Software Foundation, Inc.,
- *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  *
  *  Nov 7, 2000
  *  Modification to allow integration with Linux kernel
@@ -24,186 +24,93 @@
 #ifndef __ARCH_MIPS_MATH_EMU_IEEE754_H
 #define __ARCH_MIPS_MATH_EMU_IEEE754_H
 
+#include <linux/compiler.h>
 #include <asm/byteorder.h>
+#include <linux/kernel.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
- * does not allow it to be used as a structure element, as it is here.
- */
-#ifndef _STDARG_H
-#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;
-};
-
-typedef union _ieee754dp {
-	struct ieee754dp_konst oparts;
+union ieee754dp {
 	struct {
-		u64 mant:52;
-		unsigned int bexp:11;
-		unsigned int sign:1;
-	} parts;
+		__BITFIELD_FIELD(unsigned int sign:1,
+		__BITFIELD_FIELD(unsigned int bexp:11,
+		__BITFIELD_FIELD(u64 mant:52,
+		;)))
+	};
 	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;
+union ieee754sp {
 	struct {
-		unsigned int sign:1;
-		unsigned int bexp:11;
-		u64 mant:52;
-	} parts;
-	double d;
-	u64 bits;
-} ieee754dp;
-
-struct ieee754sp_konst {
-	unsigned sign:1;
-	unsigned bexp:8;
-	unsigned mant:23;
-};
-
-typedef union _ieee754sp {
-	struct ieee754sp_konst parts;
-	float f;
+		__BITFIELD_FIELD(unsigned sign:1,
+		__BITFIELD_FIELD(unsigned bexp:8,
+		__BITFIELD_FIELD(unsigned mant:23,
+		;)))
+	};
 	u32 bits;
-} ieee754sp;
-#endif
+};
 
 /*
  * single precision (often aka float)
 */
-int ieee754sp_finite(ieee754sp x);
-int ieee754sp_class(ieee754sp x);
-
-ieee754sp ieee754sp_abs(ieee754sp x);
-ieee754sp ieee754sp_neg(ieee754sp x);
-ieee754sp ieee754sp_scalb(ieee754sp x, int);
-ieee754sp ieee754sp_logb(ieee754sp x);
-
-/* x with sign of y */
-ieee754sp ieee754sp_copysign(ieee754sp x, ieee754sp y);
-
-ieee754sp ieee754sp_add(ieee754sp x, ieee754sp y);
-ieee754sp ieee754sp_sub(ieee754sp x, ieee754sp y);
-ieee754sp ieee754sp_mul(ieee754sp x, ieee754sp y);
-ieee754sp ieee754sp_div(ieee754sp x, ieee754sp y);
-
-ieee754sp ieee754sp_fint(int x);
-ieee754sp ieee754sp_funs(unsigned x);
-ieee754sp ieee754sp_flong(s64 x);
-ieee754sp ieee754sp_fulong(u64 x);
-ieee754sp ieee754sp_fdp(ieee754dp x);
-
-int ieee754sp_tint(ieee754sp x);
-unsigned int ieee754sp_tuns(ieee754sp x);
-s64 ieee754sp_tlong(ieee754sp x);
-u64 ieee754sp_tulong(ieee754sp x);
-
-int ieee754sp_cmp(ieee754sp x, ieee754sp y, int cop, int sig);
-/*
- * basic sp math
- */
-ieee754sp ieee754sp_modf(ieee754sp x, ieee754sp * ip);
-ieee754sp ieee754sp_frexp(ieee754sp x, int *exp);
-ieee754sp ieee754sp_ldexp(ieee754sp x, int exp);
+int ieee754sp_class(union ieee754sp x);
 
-ieee754sp ieee754sp_ceil(ieee754sp x);
-ieee754sp ieee754sp_floor(ieee754sp x);
-ieee754sp ieee754sp_trunc(ieee754sp x);
+union ieee754sp ieee754sp_abs(union ieee754sp x);
+union ieee754sp ieee754sp_neg(union ieee754sp x);
 
-ieee754sp ieee754sp_sqrt(ieee754sp x);
+union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y);
+union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y);
+union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y);
+union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y);
 
-/*
- * double precision (often aka double)
-*/
-int ieee754dp_finite(ieee754dp x);
-int ieee754dp_class(ieee754dp x);
+union ieee754sp ieee754sp_fint(int x);
+union ieee754sp ieee754sp_flong(s64 x);
+union ieee754sp ieee754sp_fdp(union ieee754dp x);
 
-/* x with sign of y */
-ieee754dp ieee754dp_copysign(ieee754dp x, ieee754dp y);
+int ieee754sp_tint(union ieee754sp x);
+s64 ieee754sp_tlong(union ieee754sp x);
 
-ieee754dp ieee754dp_add(ieee754dp x, ieee754dp y);
-ieee754dp ieee754dp_sub(ieee754dp x, ieee754dp y);
-ieee754dp ieee754dp_mul(ieee754dp x, ieee754dp y);
-ieee754dp ieee754dp_div(ieee754dp x, ieee754dp y);
+int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cop, int sig);
 
-ieee754dp ieee754dp_abs(ieee754dp x);
-ieee754dp ieee754dp_neg(ieee754dp x);
-ieee754dp ieee754dp_scalb(ieee754dp x, int);
+union ieee754sp ieee754sp_sqrt(union ieee754sp x);
 
-/* return exponent as integer in floating point format
- */
-ieee754dp ieee754dp_logb(ieee754dp x);
+/*
+ * double precision (often aka double)
+*/
+int ieee754dp_class(union ieee754dp x);
 
-ieee754dp ieee754dp_fint(int x);
-ieee754dp ieee754dp_funs(unsigned x);
-ieee754dp ieee754dp_flong(s64 x);
-ieee754dp ieee754dp_fulong(u64 x);
-ieee754dp ieee754dp_fsp(ieee754sp x);
+union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y);
+union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y);
+union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y);
+union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y);
 
-ieee754dp ieee754dp_ceil(ieee754dp x);
-ieee754dp ieee754dp_floor(ieee754dp x);
-ieee754dp ieee754dp_trunc(ieee754dp x);
+union ieee754dp ieee754dp_abs(union ieee754dp x);
+union ieee754dp ieee754dp_neg(union ieee754dp x);
 
-int ieee754dp_tint(ieee754dp x);
-unsigned int ieee754dp_tuns(ieee754dp x);
-s64 ieee754dp_tlong(ieee754dp x);
-u64 ieee754dp_tulong(ieee754dp x);
+union ieee754dp ieee754dp_fint(int x);
+union ieee754dp ieee754dp_flong(s64 x);
+union ieee754dp ieee754dp_fsp(union ieee754sp x);
 
-int ieee754dp_cmp(ieee754dp x, ieee754dp y, int cop, int sig);
-/*
- * basic sp math
- */
-ieee754dp ieee754dp_modf(ieee754dp x, ieee754dp * ip);
-ieee754dp ieee754dp_frexp(ieee754dp x, int *exp);
-ieee754dp ieee754dp_ldexp(ieee754dp x, int exp);
+int ieee754dp_tint(union ieee754dp x);
+s64 ieee754dp_tlong(union ieee754dp x);
 
-ieee754dp ieee754dp_ceil(ieee754dp x);
-ieee754dp ieee754dp_floor(ieee754dp x);
-ieee754dp ieee754dp_trunc(ieee754dp x);
+int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cop, int sig);
 
-ieee754dp ieee754dp_sqrt(ieee754dp x);
+union ieee754dp ieee754dp_sqrt(union ieee754dp x);
 
 
 
 /* 5 types of floating point number
 */
-#define IEEE754_CLASS_NORM	0x00
-#define IEEE754_CLASS_ZERO	0x01
-#define IEEE754_CLASS_DNORM	0x02
-#define IEEE754_CLASS_INF	0x03
-#define IEEE754_CLASS_SNAN	0x04
-#define IEEE754_CLASS_QNAN	0x05
+enum {
+	IEEE754_CLASS_NORM	= 0x00,
+	IEEE754_CLASS_ZERO	= 0x01,
+	IEEE754_CLASS_DNORM	= 0x02,
+	IEEE754_CLASS_INF	= 0x03,
+	IEEE754_CLASS_SNAN	= 0x04,
+	IEEE754_CLASS_QNAN	= 0x05,
+};
 
 /* exception numbers */
 #define IEEE754_INEXACT			0x01
@@ -219,114 +126,84 @@ ieee754dp ieee754dp_sqrt(ieee754dp x);
 #define IEEE754_CGT	0x04
 #define IEEE754_CUN	0x08
 
-/* rounding mode
-*/
-#define IEEE754_RN	0	/* round to nearest */
-#define IEEE754_RZ	1	/* round toward zero  */
-#define IEEE754_RD	2	/* round toward -Infinity */
-#define IEEE754_RU	3	/* round toward +Infinity */
-
-/* other naming */
-#define IEEE754_RM	IEEE754_RD
-#define IEEE754_RP	IEEE754_RU
-
 /* "normal" comparisons
 */
-static inline int ieee754sp_eq(ieee754sp x, ieee754sp y)
+static inline int ieee754sp_eq(union ieee754sp x, union ieee754sp y)
 {
 	return ieee754sp_cmp(x, y, IEEE754_CEQ, 0);
 }
 
-static inline int ieee754sp_ne(ieee754sp x, ieee754sp y)
+static inline int ieee754sp_ne(union ieee754sp x, union ieee754sp y)
 {
 	return ieee754sp_cmp(x, y,
 			     IEEE754_CLT | IEEE754_CGT | IEEE754_CUN, 0);
 }
 
-static inline int ieee754sp_lt(ieee754sp x, ieee754sp y)
+static inline int ieee754sp_lt(union ieee754sp x, union ieee754sp y)
 {
 	return ieee754sp_cmp(x, y, IEEE754_CLT, 0);
 }
 
-static inline int ieee754sp_le(ieee754sp x, ieee754sp y)
+static inline int ieee754sp_le(union ieee754sp x, union ieee754sp y)
 {
 	return ieee754sp_cmp(x, y, IEEE754_CLT | IEEE754_CEQ, 0);
 }
 
-static inline int ieee754sp_gt(ieee754sp x, ieee754sp y)
+static inline int ieee754sp_gt(union ieee754sp x, union ieee754sp y)
 {
 	return ieee754sp_cmp(x, y, IEEE754_CGT, 0);
 }
 
 
-static inline int ieee754sp_ge(ieee754sp x, ieee754sp y)
+static inline int ieee754sp_ge(union ieee754sp x, union ieee754sp y)
 {
 	return ieee754sp_cmp(x, y, IEEE754_CGT | IEEE754_CEQ, 0);
 }
 
-static inline int ieee754dp_eq(ieee754dp x, ieee754dp y)
+static inline int ieee754dp_eq(union ieee754dp x, union ieee754dp y)
 {
 	return ieee754dp_cmp(x, y, IEEE754_CEQ, 0);
 }
 
-static inline int ieee754dp_ne(ieee754dp x, ieee754dp y)
+static inline int ieee754dp_ne(union ieee754dp x, union ieee754dp y)
 {
 	return ieee754dp_cmp(x, y,
 			     IEEE754_CLT | IEEE754_CGT | IEEE754_CUN, 0);
 }
 
-static inline int ieee754dp_lt(ieee754dp x, ieee754dp y)
+static inline int ieee754dp_lt(union ieee754dp x, union ieee754dp y)
 {
 	return ieee754dp_cmp(x, y, IEEE754_CLT, 0);
 }
 
-static inline int ieee754dp_le(ieee754dp x, ieee754dp y)
+static inline int ieee754dp_le(union ieee754dp x, union ieee754dp y)
 {
 	return ieee754dp_cmp(x, y, IEEE754_CLT | IEEE754_CEQ, 0);
 }
 
-static inline int ieee754dp_gt(ieee754dp x, ieee754dp y)
+static inline int ieee754dp_gt(union ieee754dp x, union ieee754dp y)
 {
 	return ieee754dp_cmp(x, y, IEEE754_CGT, 0);
 }
 
-static inline int ieee754dp_ge(ieee754dp x, ieee754dp y)
+static inline int ieee754dp_ge(union ieee754dp x, union ieee754dp y)
 {
 	return ieee754dp_cmp(x, y, IEEE754_CGT | IEEE754_CEQ, 0);
 }
 
-
-/*
- * Like strtod
- */
-ieee754dp ieee754dp_fstr(const char *s, char **endp);
-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))
 
@@ -377,8 +254,8 @@ static inline int ieee754_sxtest(unsigned n)
 }
 
 /* debugging */
-ieee754sp ieee754sp_dump(char *s, ieee754sp x);
-ieee754dp ieee754dp_dump(char *s, ieee754dp x);
+union ieee754sp ieee754sp_dump(char *s, union ieee754sp x);
+union ieee754dp ieee754dp_dump(char *s, union ieee754dp x);
 
 #define IEEE754_SPCVAL_PZERO	0
 #define IEEE754_SPCVAL_NZERO	1
@@ -398,10 +275,10 @@ ieee754dp ieee754dp_dump(char *s, ieee754dp x);
 #define IEEE754_SPCVAL_P1E31	15	/* + 1.0e31 */
 #define IEEE754_SPCVAL_P1E63	16	/* + 1.0e63 */
 
-extern const struct ieee754dp_konst __ieee754dp_spcvals[];
-extern const struct ieee754sp_konst __ieee754sp_spcvals[];
-#define ieee754dp_spcvals ((const ieee754dp *)__ieee754dp_spcvals)
-#define ieee754sp_spcvals ((const ieee754sp *)__ieee754sp_spcvals)
+extern const union ieee754dp __ieee754dp_spcvals[];
+extern const union ieee754sp __ieee754sp_spcvals[];
+#define ieee754dp_spcvals ((const union ieee754dp *)__ieee754dp_spcvals)
+#define ieee754sp_spcvals ((const union ieee754sp *)__ieee754sp_spcvals)
 
 /*
  * Return infinity with given sign
@@ -431,28 +308,15 @@ extern const struct ieee754sp_konst __ieee754sp_spcvals[];
 /*
  * Indefinite integer value
  */
-#define ieee754si_indef()	INT_MAX
-#ifdef LONG_LONG_MAX
-#define ieee754di_indef()	LONG_LONG_MAX
-#else
-#define ieee754di_indef()	((s64)(~0ULL>>1))
-#endif
-
-/* IEEE exception context, passed to handler */
-struct ieee754xctx {
-	const char *op;		/* operation name */
-	int rt;			/* result type */
-	union {
-		ieee754sp sp;	/* single precision */
-		ieee754dp dp;	/* double precision */
-#ifdef IEEE854_XP
-		ieee754xp xp;	/* extended precision */
-#endif
-		int si;		/* standard signed integer (32bits) */
-		s64 di;		/* extended signed integer (64bits) */
-	} rv;			/* default result format implied by op */
-	va_list ap;
-};
+static inline int ieee754si_indef(void)
+{
+	return INT_MAX;
+}
+
+static inline s64 ieee754di_indef(void)
+{
+	return S64_MAX;
+}
 
 /* result types for xctx.rt */
 #define IEEE754_RT_SP	0
@@ -461,8 +325,6 @@ struct ieee754xctx {
 #define IEEE754_RT_SI	3
 #define IEEE754_RT_DI	4
 
-extern void ieee754_xcpt(struct ieee754xctx *xcp);
-
 /* compat */
 #define ieee754dp_fix(x)	ieee754dp_tint(x)
 #define ieee754sp_fix(x)	ieee754sp_tint(x)