diff options
Diffstat (limited to 'arch/mips/math-emu/ieee754.h')
-rw-r--r-- | arch/mips/math-emu/ieee754.h | 59 |
1 files changed, 39 insertions, 20 deletions
diff --git a/arch/mips/math-emu/ieee754.h b/arch/mips/math-emu/ieee754.h index df94720714c7..e0eb7a965fdf 100644 --- a/arch/mips/math-emu/ieee754.h +++ b/arch/mips/math-emu/ieee754.h @@ -67,6 +67,7 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y); union ieee754sp ieee754sp_fint(int x); union ieee754sp ieee754sp_flong(s64 x); union ieee754sp ieee754sp_fdp(union ieee754dp x); +union ieee754sp ieee754sp_rint(union ieee754sp x); int ieee754sp_tint(union ieee754sp x); s64 ieee754sp_tlong(union ieee754sp x); @@ -101,6 +102,7 @@ union ieee754dp ieee754dp_neg(union ieee754dp x); union ieee754dp ieee754dp_fint(int x); union ieee754dp ieee754dp_flong(s64 x); union ieee754dp ieee754dp_fsp(union ieee754sp x); +union ieee754dp ieee754dp_rint(union ieee754dp x); int ieee754dp_tint(union ieee754dp x); s64 ieee754dp_tlong(union ieee754dp x); @@ -163,11 +165,12 @@ struct _ieee754_csr { }; #define ieee754_csr (*(struct _ieee754_csr *)(¤t->thread.fpu.fcr31)) -static inline unsigned ieee754_getrm(void) +static inline unsigned int ieee754_getrm(void) { return (ieee754_csr.rm); } -static inline unsigned ieee754_setrm(unsigned rm) + +static inline unsigned int ieee754_setrm(unsigned int rm) { return (ieee754_csr.rm = rm); } @@ -175,14 +178,14 @@ static inline unsigned ieee754_setrm(unsigned rm) /* * get current exceptions */ -static inline unsigned ieee754_getcx(void) +static inline unsigned int ieee754_getcx(void) { return (ieee754_csr.cx); } /* test for current exception condition */ -static inline int ieee754_cxtest(unsigned n) +static inline int ieee754_cxtest(unsigned int n) { return (ieee754_csr.cx & n); } @@ -190,21 +193,21 @@ static inline int ieee754_cxtest(unsigned n) /* * get sticky exceptions */ -static inline unsigned ieee754_getsx(void) +static inline unsigned int ieee754_getsx(void) { return (ieee754_csr.sx); } /* clear sticky conditions */ -static inline unsigned ieee754_clrsx(void) +static inline unsigned int ieee754_clrsx(void) { return (ieee754_csr.sx = 0); } /* test for sticky exception condition */ -static inline int ieee754_sxtest(unsigned n) +static inline int ieee754_sxtest(unsigned int n) { return (ieee754_csr.sx & n); } @@ -221,15 +224,16 @@ union ieee754dp ieee754dp_dump(char *s, union ieee754dp x); #define IEEE754_SPCVAL_NTEN 5 /* -10.0 */ #define IEEE754_SPCVAL_PINFINITY 6 /* +inf */ #define IEEE754_SPCVAL_NINFINITY 7 /* -inf */ -#define IEEE754_SPCVAL_INDEF 8 /* quiet NaN */ -#define IEEE754_SPCVAL_PMAX 9 /* +max norm */ -#define IEEE754_SPCVAL_NMAX 10 /* -max norm */ -#define IEEE754_SPCVAL_PMIN 11 /* +min norm */ -#define IEEE754_SPCVAL_NMIN 12 /* -min norm */ -#define IEEE754_SPCVAL_PMIND 13 /* +min denorm */ -#define IEEE754_SPCVAL_NMIND 14 /* -min denorm */ -#define IEEE754_SPCVAL_P1E31 15 /* + 1.0e31 */ -#define IEEE754_SPCVAL_P1E63 16 /* + 1.0e63 */ +#define IEEE754_SPCVAL_INDEF_LEG 8 /* legacy quiet NaN */ +#define IEEE754_SPCVAL_INDEF_2008 9 /* IEEE 754-2008 quiet NaN */ +#define IEEE754_SPCVAL_PMAX 10 /* +max norm */ +#define IEEE754_SPCVAL_NMAX 11 /* -max norm */ +#define IEEE754_SPCVAL_PMIN 12 /* +min norm */ +#define IEEE754_SPCVAL_NMIN 13 /* -min norm */ +#define IEEE754_SPCVAL_PMIND 14 /* +min denorm */ +#define IEEE754_SPCVAL_NMIND 15 /* -min denorm */ +#define IEEE754_SPCVAL_P1E31 16 /* + 1.0e31 */ +#define IEEE754_SPCVAL_P1E63 17 /* + 1.0e63 */ extern const union ieee754dp __ieee754dp_spcvals[]; extern const union ieee754sp __ieee754sp_spcvals[]; @@ -243,7 +247,8 @@ extern const union ieee754sp __ieee754sp_spcvals[]; #define ieee754dp_zero(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PZERO+(sn)]) #define ieee754dp_one(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PONE+(sn)]) #define ieee754dp_ten(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PTEN+(sn)]) -#define ieee754dp_indef() (ieee754dp_spcvals[IEEE754_SPCVAL_INDEF]) +#define ieee754dp_indef() (ieee754dp_spcvals[IEEE754_SPCVAL_INDEF_LEG + \ + ieee754_csr.nan2008]) #define ieee754dp_max(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMAX+(sn)]) #define ieee754dp_min(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMIN+(sn)]) #define ieee754dp_mind(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMIND+(sn)]) @@ -254,7 +259,8 @@ extern const union ieee754sp __ieee754sp_spcvals[]; #define ieee754sp_zero(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PZERO+(sn)]) #define ieee754sp_one(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PONE+(sn)]) #define ieee754sp_ten(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PTEN+(sn)]) -#define ieee754sp_indef() (ieee754sp_spcvals[IEEE754_SPCVAL_INDEF]) +#define ieee754sp_indef() (ieee754sp_spcvals[IEEE754_SPCVAL_INDEF_LEG + \ + ieee754_csr.nan2008]) #define ieee754sp_max(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMAX+(sn)]) #define ieee754sp_min(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMIN+(sn)]) #define ieee754sp_mind(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMIND+(sn)]) @@ -266,12 +272,25 @@ extern const union ieee754sp __ieee754sp_spcvals[]; */ static inline int ieee754si_indef(void) { - return INT_MAX; + return ieee754_csr.nan2008 ? 0 : INT_MAX; } static inline s64 ieee754di_indef(void) { - return S64_MAX; + return ieee754_csr.nan2008 ? 0 : S64_MAX; +} + +/* + * Overflow integer value + */ +static inline int ieee754si_overflow(int xs) +{ + return ieee754_csr.nan2008 && xs ? INT_MIN : INT_MAX; +} + +static inline s64 ieee754di_overflow(int xs) +{ + return ieee754_csr.nan2008 && xs ? S64_MIN : S64_MAX; } /* result types for xctx.rt */ |