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Diffstat (limited to 'arch/mips/math-emu/ieee754.h')
-rw-r--r--arch/mips/math-emu/ieee754.h59
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 *)(&current->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 */