Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

[linux-drm-fsl-dcu.git] / arch / mips / math-emu / ieee754.h

diff --git a/arch/mips/math-emu/ieee754.h b/arch/mips/math-emu/ieee754.h
index df94720714c73cc95736544f7b05804d607d27ca..d3be351aed151305396723ddfff661837a114cde 100644 (file)
--- a/arch/mips/math-emu/ieee754.h
+++ b/arch/mips/math-emu/ieee754.h
@@ -221,15 +221,16 @@ 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 +244,8 @@ 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 +256,8 @@ 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 +269,25 @@ 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 */