MIPS: math-emu: Get rid of the useless parts of exception handling.

All it really did was throw a printk for no obvious reason.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/math-emu/Makefile

@@ -2,8 +2,8 @@
 # Makefile for the Linux/MIPS kernel FPU emulation.
 #
 
-obj-y	+= cp1emu.o ieee754dp.o ieee754sp.o ieee754.o ieee754xcpt.o dp_div.o \
-	   dp_mul.o dp_sub.o dp_add.o dp_fsp.o dp_cmp.o dp_simple.o dp_tint.o \
+obj-y	+= cp1emu.o ieee754dp.o ieee754sp.o ieee754.o dp_div.o dp_mul.o \
+	   dp_sub.o dp_add.o dp_fsp.o dp_cmp.o dp_simple.o dp_tint.o \
 	   dp_fint.o dp_tlong.o dp_flong.o sp_div.o sp_mul.o sp_sub.o \
 	   sp_add.o sp_fdp.o sp_cmp.o sp_simple.o sp_tint.o sp_fint.o \
 	   sp_tlong.o sp_flong.o kernel_linkage.o dsemul.o

arch/mips/math-emu/dp_add.c

@@ -53,7 +53,7 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_DNORM):
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_nanxcpt(ieee754dp_indef(), "add", x, y);
+		return ieee754dp_nanxcpt(ieee754dp_indef());
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
@@ -76,7 +76,7 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
 		if (xs == ys)
 			return x;
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_xcpt(ieee754dp_indef(), "add", x, y);
+		return ieee754dp_indef();
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_INF):
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
@@ -178,5 +178,6 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
 		}
 
 	}
-	DPNORMRET2(xs, xe, xm, "add", x, y);
+
+	return ieee754dp_format(xs, xe, xm);
 }

arch/mips/math-emu/dp_cmp.c

@@ -44,7 +44,7 @@ int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig)
 			return 1;
 		if (cmp & (IEEE754_CLT | IEEE754_CGT)) {
 			if (sig && ieee754_setandtestcx(IEEE754_INVALID_OPERATION))
-				return ieee754di_xcpt(0, "fcmpf", x);
+				return 0;
 		}
 		return 0;
 	} else {

arch/mips/math-emu/dp_div.c

@@ -52,7 +52,7 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_DNORM):
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_nanxcpt(ieee754dp_indef(), "div", x, y);
+		return ieee754dp_nanxcpt(ieee754dp_indef());
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
@@ -73,7 +73,7 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
 
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_xcpt(ieee754dp_indef(), "div", x, y);
+		return ieee754dp_indef();
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_INF):
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
@@ -90,12 +90,12 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_xcpt(ieee754dp_indef(), "div", x, y);
+		return ieee754dp_indef();
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO):
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO):
 		ieee754_setcx(IEEE754_ZERO_DIVIDE);
-		return ieee754dp_xcpt(ieee754dp_inf(xs ^ ys), "div", x, y);
+		return ieee754dp_inf(xs ^ ys);
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_NORM):
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_DNORM):
@@ -151,6 +151,6 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
 			re--;
 		}
 
-		DPNORMRET2(xs == ys ? 0 : 1, re, rm, "div", x, y);
+		return ieee754dp_format(xs == ys ? 0 : 1, re, rm);
 	}
 }

arch/mips/math-emu/dp_flong.c

@@ -65,5 +65,6 @@ union ieee754dp ieee754dp_flong(s64 x)
 			xe--;
 		}
 	}
-	DPNORMRET1(xs, xe, xm, "dp_flong", x);
+
+	return ieee754dp_format(xs, xe, xm);
 }

arch/mips/math-emu/dp_fsp.c

@@ -40,14 +40,13 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x)
 	switch (xc) {
 	case IEEE754_CLASS_SNAN:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_nanxcpt(ieee754dp_indef(), "fsp");
+		return ieee754dp_nanxcpt(ieee754dp_indef());
 	case IEEE754_CLASS_QNAN:
 		return ieee754dp_nanxcpt(builddp(xs,
 						 DP_EMAX + 1 + DP_EBIAS,
 						 ((u64) xm
 						  << (DP_FBITS -
-						      SP_FBITS))), "fsp",
-					 x);
+						      SP_FBITS))));
 	case IEEE754_CLASS_INF:
 		return ieee754dp_inf(xs);
 	case IEEE754_CLASS_ZERO:

arch/mips/math-emu/dp_mul.c

@@ -52,7 +52,7 @@ union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y)
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_DNORM):
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_nanxcpt(ieee754dp_indef(), "mul", x, y);
+		return ieee754dp_nanxcpt(ieee754dp_indef());
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
@@ -73,7 +73,7 @@ union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y)
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_ZERO):
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_xcpt(ieee754dp_indef(), "mul", x, y);
+		return ieee754dp_indef();
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_INF):
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_INF):
@@ -171,6 +171,7 @@ union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y)
 			    ((rm << (DP_FBITS + 1 + 3 + 1)) != 0);
 		}
 		assert(rm & (DP_HIDDEN_BIT << 3));
-		DPNORMRET2(rs, re, rm, "mul", x, y);
+
+		return ieee754dp_format(rs, re, rm);
 	}
 }

arch/mips/math-emu/dp_simple.c

@@ -45,7 +45,7 @@ union ieee754dp ieee754dp_neg(union ieee754dp x)
 		union ieee754dp y = ieee754dp_indef();
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		DPSIGN(y) = DPSIGN(x);
-		return ieee754dp_nanxcpt(y, "neg");
+		return ieee754dp_nanxcpt(y);
 	}
 
 	return x;
@@ -65,7 +65,7 @@ union ieee754dp ieee754dp_abs(union ieee754dp x)
 
 	if (xc == IEEE754_CLASS_SNAN) {
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_nanxcpt(ieee754dp_indef(), "abs");
+		return ieee754dp_nanxcpt(ieee754dp_indef());
 	}
 
 	return x;

arch/mips/math-emu/dp_sqrt.c

@@ -49,10 +49,10 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x)
 	switch (xc) {
 	case IEEE754_CLASS_QNAN:
 		/* sqrt(Nan) = Nan */
-		return ieee754dp_nanxcpt(x, "sqrt");
+		return ieee754dp_nanxcpt(x);
 	case IEEE754_CLASS_SNAN:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_nanxcpt(ieee754dp_indef(), "sqrt");
+		return ieee754dp_nanxcpt(ieee754dp_indef());
 	case IEEE754_CLASS_ZERO:
 		/* sqrt(0) = 0 */
 		return x;
@@ -60,7 +60,7 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x)
 		if (xs) {
 			/* sqrt(-Inf) = Nan */
 			ieee754_setcx(IEEE754_INVALID_OPERATION);
-			return ieee754dp_nanxcpt(ieee754dp_indef(), "sqrt");
+			return ieee754dp_nanxcpt(ieee754dp_indef());
 		}
 		/* sqrt(+Inf) = Inf */
 		return x;
@@ -71,7 +71,7 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x)
 		if (xs) {
 			/* sqrt(-x) = Nan */
 			ieee754_setcx(IEEE754_INVALID_OPERATION);
-			return ieee754dp_nanxcpt(ieee754dp_indef(), "sqrt");
+			return ieee754dp_nanxcpt(ieee754dp_indef());
 		}
 		break;
 	}

arch/mips/math-emu/dp_sub.c

@@ -52,7 +52,7 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_DNORM):
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_nanxcpt(ieee754dp_indef(), "sub", x, y);
+		return ieee754dp_nanxcpt(ieee754dp_indef());
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
@@ -75,7 +75,7 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
 		if (xs != ys)
 			return x;
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754dp_xcpt(ieee754dp_indef(), "sub", x, y);
+		return ieee754dp_indef();
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_INF):
@@ -186,5 +186,6 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
 			xe--;
 		}
 	}
-	DPNORMRET2(xs, xe, xm, "sub", x, y);
+
+	return ieee754dp_format(xs, xe, xm);
 }

arch/mips/math-emu/dp_tint.c

@@ -40,7 +40,7 @@ int ieee754dp_tint(union ieee754dp x)
 	case IEEE754_CLASS_QNAN:
 	case IEEE754_CLASS_INF:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754si_xcpt(ieee754si_indef(), "dp_tint", x);
+		return ieee754si_indef();
 	case IEEE754_CLASS_ZERO:
 		return 0;
 	case IEEE754_CLASS_DNORM:
@@ -51,7 +51,7 @@ int ieee754dp_tint(union ieee754dp x)
 		/* Set invalid. We will only use overflow for floating
 		   point overflow */
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754si_xcpt(ieee754si_indef(), "dp_tint", x);
+		return ieee754si_indef();
 	}
 	/* oh gawd */
 	if (xe > DP_FBITS) {
@@ -96,7 +96,7 @@ int ieee754dp_tint(union ieee754dp x)
 		if ((xm >> 31) != 0 && (xs == 0 || xm != 0x80000000)) {
 			/* This can happen after rounding */
 			ieee754_setcx(IEEE754_INVALID_OPERATION);
-			return ieee754si_xcpt(ieee754si_indef(), "dp_tint", x);
+			return ieee754si_indef();
 		}
 		if (round || sticky)
 			ieee754_setcx(IEEE754_INEXACT);

arch/mips/math-emu/dp_tlong.c

@@ -40,7 +40,7 @@ s64 ieee754dp_tlong(union ieee754dp x)
 	case IEEE754_CLASS_QNAN:
 	case IEEE754_CLASS_INF:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754di_xcpt(ieee754di_indef(), "dp_tlong", x);
+		return ieee754di_indef();
 	case IEEE754_CLASS_ZERO:
 		return 0;
 	case IEEE754_CLASS_DNORM:
@@ -54,7 +54,7 @@ s64 ieee754dp_tlong(union ieee754dp x)
 		/* Set invalid. We will only use overflow for floating
 		   point overflow */
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754di_xcpt(ieee754di_indef(), "dp_tlong", x);
+		return ieee754di_indef();
 	}
 	/* oh gawd */
 	if (xe > DP_FBITS) {
@@ -100,7 +100,7 @@ s64 ieee754dp_tlong(union ieee754dp x)
 		if ((xm >> 63) != 0) {
 			/* This can happen after rounding */
 			ieee754_setcx(IEEE754_INVALID_OPERATION);
-			return ieee754di_xcpt(ieee754di_indef(), "dp_tlong", x);
+			return ieee754di_indef();
 		}
 		if (round || sticky)
 			ieee754_setcx(IEEE754_INEXACT);

arch/mips/math-emu/ieee754.c

@@ -28,7 +28,6 @@
  * ########################################################################
  */
 
-#include <stdarg.h>
 #include <linux/compiler.h>
 
 #include "ieee754int.h"
@@ -38,15 +37,13 @@
 /* special constants
 */
 
-#ifdef __MIPSEB__
-#define SPSTR(s, b, m) {s, b, m}
-#define DPSTR(s, b, mh, ml) {s, b, mh, ml}
-#elif defined(__MIPSEL__)
-#define SPSTR(s, b, m) {m, b, s}
-#define DPSTR(s, b, mh, ml) {ml, mh, b, s}
-#else /* !defined (__MIPSEB__) && !defined (__MIPSEL__) */
-#error "MIPS but neither __MIPSEB__ nor __MIPSEL__?"
-#endif
+#define DPSTR(s, b, mh, ml)						\
+{									\
+	.sign	= (s),							\
+	.bexp	= (b),							\
+	.manthi	= (mh),							\
+	.mantlo	= (ml)							\
+}
 
 const struct ieee754dp_const __ieee754dp_spcvals[] = {
 	DPSTR(0, DP_EMIN - 1 + DP_EBIAS, 0, 0), /* + zero   */
@@ -68,6 +65,13 @@ const struct ieee754dp_const __ieee754dp_spcvals[] = {
 	DPSTR(0, 63 + DP_EBIAS, 0, 0),	/* + 1.0e63 */
 };
 
+#define SPSTR(s, b, m)							\
+{									\
+	.sign	= (s),							\
+	.bexp	= (b),							\
+	.mant	= (m)							\
+}
+
 const struct ieee754sp_const __ieee754sp_spcvals[] = {
 	SPSTR(0, SP_EMIN - 1 + SP_EBIAS, 0),	/* + zero   */
 	SPSTR(1, SP_EMIN - 1 + SP_EBIAS, 0),	/* - zero   */
@@ -87,34 +91,3 @@ const struct ieee754sp_const __ieee754sp_spcvals[] = {
 	SPSTR(0, 31 + SP_EBIAS, 0),	/* + 1.0e31 */
 	SPSTR(0, 63 + SP_EBIAS, 0),	/* + 1.0e63 */
 };
-
-
-int __cold ieee754si_xcpt(int r, const char *op, ...)
-{
-	struct ieee754xctx ax;
-
-	if (!ieee754_tstx())
-		return r;
-	ax.op = op;
-	ax.rt = IEEE754_RT_SI;
-	ax.rv.si = r;
-	va_start(ax.ap, op);
-	ieee754_xcpt(&ax);
-	va_end(ax.ap);
-	return ax.rv.si;
-}
-
-s64 __cold ieee754di_xcpt(s64 r, const char *op, ...)
-{
-	struct ieee754xctx ax;
-
-	if (!ieee754_tstx())
-		return r;
-	ax.op = op;
-	ax.rt = IEEE754_RT_DI;
-	ax.rv.di = r;
-	va_start(ax.ap, op);
-	ieee754_xcpt(&ax);
-	va_end(ax.ap);
-	return ax.rv.di;
-}

arch/mips/math-emu/ieee754.h

@@ -24,7 +24,6 @@
 #ifndef __ARCH_MIPS_MATH_EMU_IEEE754_H
 #define __ARCH_MIPS_MATH_EMU_IEEE754_H
 
-#include <stdarg.h>
 #include <linux/compiler.h>
 #include <asm/byteorder.h>
 #include <linux/kernel.h>
@@ -343,19 +342,6 @@ static inline s64 ieee754di_indef(void)
 	return S64_MAX;
 }
 
-/* IEEE exception context, passed to handler */
-struct ieee754xctx {
-	const char *op;		/* operation name */
-	int rt;			/* result type */
-	union {
-		union ieee754sp sp;	/* single precision */
-		union ieee754dp dp;	/* double precision */
-		int si;		/* standard signed integer (32bits) */
-		s64 di;		/* extended signed integer (64bits) */
-	} rv;			/* default result format implied by op */
-	va_list ap;
-};
-
 /* result types for xctx.rt */
 #define IEEE754_RT_SP	0
 #define IEEE754_RT_DP	1
@@ -363,8 +349,6 @@ struct ieee754xctx {
 #define IEEE754_RT_SI	3
 #define IEEE754_RT_DI	4
 
-extern void __cold ieee754_xcpt(struct ieee754xctx *xcp);
-
 /* compat */
 #define ieee754dp_fix(x)	ieee754dp_tint(x)
 #define ieee754sp_fix(x)	ieee754sp_tint(x)

arch/mips/math-emu/ieee754dp.c

@@ -23,7 +23,6 @@
  * ########################################################################
  */
 
-#include <stdarg.h>
 #include <linux/compiler.h>
 
 #include "ieee754dp.h"
@@ -47,25 +46,8 @@ static inline int ieee754dp_issnan(union ieee754dp x)
 }
 
 
-union ieee754dp __cold ieee754dp_xcpt(union ieee754dp r, const char *op, ...)
+union ieee754dp __cold ieee754dp_nanxcpt(union ieee754dp r)
 {
-	struct ieee754xctx ax;
-	if (!ieee754_tstx())
-		return r;
-
-	ax.op = op;
-	ax.rt = IEEE754_RT_DP;
-	ax.rv.dp = r;
-	va_start(ax.ap, op);
-	ieee754_xcpt(&ax);
-	va_end(ax.ap);
-	return ax.rv.dp;
-}
-
-union ieee754dp __cold ieee754dp_nanxcpt(union ieee754dp r, const char *op, ...)
-{
-	struct ieee754xctx ax;
-
 	assert(ieee754dp_isnan(r));
 
 	if (!ieee754dp_issnan(r))	/* QNAN does not cause invalid op !! */
@@ -80,13 +62,7 @@ union ieee754dp __cold ieee754dp_nanxcpt(union ieee754dp r, const char *op, ...)
 			return ieee754dp_indef();
 	}
 
-	ax.op = op;
-	ax.rt = 0;
-	ax.rv.dp = r;
-	va_start(ax.ap, op);
-	ieee754_xcpt(&ax);
-	va_end(ax.ap);
-	return ax.rv.dp;
+	return r;
 }
 
 static u64 get_rounding(int sn, u64 xm)

arch/mips/math-emu/ieee754dp.h

@@ -81,20 +81,5 @@ static inline union ieee754dp builddp(int s, int bx, u64 m)
 }
 
 extern int ieee754dp_isnan(union ieee754dp);
-extern int __cold ieee754si_xcpt(int, const char *, ...);
-extern s64 __cold ieee754di_xcpt(s64, const char *, ...);
-extern union ieee754dp __cold ieee754dp_xcpt(union ieee754dp, const char *, ...);
-extern union ieee754dp __cold ieee754dp_nanxcpt(union ieee754dp, const char *, ...);
+extern union ieee754dp __cold ieee754dp_nanxcpt(union ieee754dp);
 extern union ieee754dp ieee754dp_format(int, int, u64);
-
-
-#define DPNORMRET2(s, e, m, name, a0, a1)				\
-{									\
-	union ieee754dp V = ieee754dp_format(s, e, m);			\
-	if (ieee754_tstx())						\
-		return ieee754dp_xcpt(V, name, a0, a1);			\
-	else								\
-		return V;						\
-}
-
-#define DPNORMRET1(s, e, m, name, a0)  DPNORMRET2(s, e, m, name, a0, a0)

arch/mips/math-emu/ieee754int.h

@@ -48,11 +48,6 @@ static inline int ieee754_setandtestcx(const unsigned int x)
 	return ieee754_csr.mx & x;
 }
 
-static inline int ieee754_tstx(void)
-{
-	return ieee754_csr.cx & ieee754_csr.mx;
-}
-
 #define COMPXSP \
 	unsigned xm; int xe; int xs __maybe_unused; int xc
 

arch/mips/math-emu/ieee754sp.c

@@ -23,7 +23,6 @@
  * ########################################################################
  */
 
-#include <stdarg.h>
 #include <linux/compiler.h>
 
 #include "ieee754sp.h"
@@ -47,26 +46,8 @@ static inline int ieee754sp_issnan(union ieee754sp x)
 }
 
 
-union ieee754sp __cold ieee754sp_xcpt(union ieee754sp r, const char *op, ...)
+union ieee754sp __cold ieee754sp_nanxcpt(union ieee754sp r)
 {
-	struct ieee754xctx ax;
-
-	if (!ieee754_tstx())
-		return r;
-
-	ax.op = op;
-	ax.rt = IEEE754_RT_SP;
-	ax.rv.sp = r;
-	va_start(ax.ap, op);
-	ieee754_xcpt(&ax);
-	va_end(ax.ap);
-	return ax.rv.sp;
-}
-
-union ieee754sp __cold ieee754sp_nanxcpt(union ieee754sp r, const char *op, ...)
-{
-	struct ieee754xctx ax;
-
 	assert(ieee754sp_isnan(r));
 
 	if (!ieee754sp_issnan(r))	/* QNAN does not cause invalid op !! */
@@ -81,13 +62,7 @@ union ieee754sp __cold ieee754sp_nanxcpt(union ieee754sp r, const char *op, ...)
 			return ieee754sp_indef();
 	}
 
-	ax.op = op;
-	ax.rt = 0;
-	ax.rv.sp = r;
-	va_start(ax.ap, op);
-	ieee754_xcpt(&ax);
-	va_end(ax.ap);
-	return ax.rv.sp;
+	return r;
 }
 
 static unsigned get_rounding(int sn, unsigned xm)

arch/mips/math-emu/ieee754sp.h

@@ -87,21 +87,5 @@ static inline union ieee754sp buildsp(int s, int bx, unsigned m)
 }
 
 extern int ieee754sp_isnan(union ieee754sp);
-extern int __cold ieee754si_xcpt(int, const char *, ...);
-extern s64 __cold ieee754di_xcpt(s64, const char *, ...);
-extern union ieee754sp __cold ieee754sp_xcpt(union ieee754sp, const char *, ...);
-extern union ieee754sp __cold ieee754sp_nanxcpt(union ieee754sp, const char *, ...);
+extern union ieee754sp __cold ieee754sp_nanxcpt(union ieee754sp);
 extern union ieee754sp ieee754sp_format(int, int, unsigned);
-
-
-#define SPNORMRET2(s, e, m, name, a0, a1)				\
-{									\
-	union ieee754sp V = ieee754sp_format(s, e, m);			\
-									\
-	if (ieee754_tstx())						\
-		return ieee754sp_xcpt(V, name, a0, a1);			\
-	else								\
-		return V;						\
-}
-
-#define SPNORMRET1(s, e, m, name, a0)  SPNORMRET2(s, e, m, name, a0, a0)

arch/mips/math-emu/ieee754xcpt.c

-/*
- * MIPS floating point support
- * Copyright (C) 1994-2000 Algorithmics Ltd.
- *
- * ########################################################################
- *
- *  This program is free software; you can distribute it and/or modify it
- *  under the terms of the GNU General Public License (Version 2) as
- *  published by the Free Software Foundation.
- *
- *  This program is distributed in the hope it will be useful, but WITHOUT
- *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- *  for more details.
- *
- *  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.
- *
- * ########################################################################
- */
-
-/**************************************************************************
- *  Nov 7, 2000
- *  Added preprocessor hacks to map to Linux kernel diagnostics.
- *
- *  Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
- *  Copyright (C) 2000 MIPS Technologies, Inc.	All rights reserved.
- *************************************************************************/
-
-#include <linux/compiler.h>
-#include <linux/printk.h>
-#include "ieee754.h"
-
-/*
- * Very naff exception handler (you can plug in your own and
- * override this).
- */
-
-static const char *const rtnames[] = {
-	"sp", "dp", "xp", "si", "di"
-};
-
-void __cold ieee754_xcpt(struct ieee754xctx *xcp)
-{
-	printk(KERN_DEBUG "floating point exception in \"%s\", type=%s\n",
-		xcp->op, rtnames[xcp->rt]);
-}

arch/mips/math-emu/sp_add.c

@@ -52,7 +52,7 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_DNORM):
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_nanxcpt(ieee754sp_indef(), "add", x, y);
+		return ieee754sp_nanxcpt(ieee754sp_indef());
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
@@ -75,7 +75,7 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
 		if (xs == ys)
 			return x;
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_xcpt(ieee754sp_indef(), "add", x, y);
+		return ieee754sp_indef();
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_INF):
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
@@ -172,5 +172,6 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
 		}
 
 	}
-	SPNORMRET2(xs, xe, xm, "add", x, y);
+
+	return ieee754sp_format(xs, xe, xm);
 }

arch/mips/math-emu/sp_cmp.c

@@ -44,7 +44,7 @@ int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cmp, int sig)
 			return 1;
 		if (cmp & (IEEE754_CLT | IEEE754_CGT)) {
 			if (sig && ieee754_setandtestcx(IEEE754_INVALID_OPERATION))
-				return ieee754si_xcpt(0, "fcmpf", x);
+				return 0;
 		}
 		return 0;
 	} else {

arch/mips/math-emu/sp_div.c

@@ -52,7 +52,7 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_DNORM):
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_nanxcpt(ieee754sp_indef(), "div", x, y);
+		return ieee754sp_nanxcpt(ieee754sp_indef());
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
@@ -73,7 +73,7 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
 
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_xcpt(ieee754sp_indef(), "div", x, y);
+		return ieee754sp_indef();
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_INF):
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
@@ -90,12 +90,12 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_xcpt(ieee754sp_indef(), "div", x, y);
+		return ieee754sp_indef();
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO):
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO):
 		ieee754_setcx(IEEE754_ZERO_DIVIDE);
-		return ieee754sp_xcpt(ieee754sp_inf(xs ^ ys), "div", x, y);
+		return ieee754sp_inf(xs ^ ys);
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_NORM):
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_DNORM):
@@ -151,6 +151,6 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
 			re--;
 		}
 
-		SPNORMRET2(xs == ys ? 0 : 1, re, rm, "div", x, y);
+		return ieee754sp_format(xs == ys ? 0 : 1, re, rm);
 	}
 }

arch/mips/math-emu/sp_fdp.c

@@ -41,13 +41,13 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x)
 	switch (xc) {
 	case IEEE754_CLASS_SNAN:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_nanxcpt(ieee754sp_indef(), "fdp");
+		return ieee754sp_nanxcpt(ieee754sp_indef());
 	case IEEE754_CLASS_QNAN:
 		nan = buildsp(xs, SP_EMAX + 1 + SP_EBIAS, (u32)
 				(xm >> (DP_FBITS - SP_FBITS)));
 		if (!ieee754sp_isnan(nan))
 			nan = ieee754sp_indef();
-		return ieee754sp_nanxcpt(nan, "fdp", x);
+		return ieee754sp_nanxcpt(nan);
 	case IEEE754_CLASS_INF:
 		return ieee754sp_inf(xs);
 	case IEEE754_CLASS_ZERO:
@@ -58,8 +58,8 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x)
 		ieee754_setcx(IEEE754_INEXACT);
 		if ((ieee754_csr.rm == IEEE754_RU && !xs) ||
 				(ieee754_csr.rm == IEEE754_RD && xs))
-			return ieee754sp_xcpt(ieee754sp_mind(xs), "fdp", x);
-		return ieee754sp_xcpt(ieee754sp_zero(xs), "fdp", x);
+			return ieee754sp_mind(xs);
+		return ieee754sp_zero(xs);
 	case IEEE754_CLASS_NORM:
 		break;
 	}
@@ -72,6 +72,6 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x)
 		rm = (xm >> (DP_FBITS - (SP_FBITS + 3))) |
 		    ((xm << (64 - (DP_FBITS - (SP_FBITS + 3)))) != 0);
 
-		SPNORMRET1(xs, xe, rm, "fdp", x);
+		return ieee754sp_format(xs, xe, rm);
 	}
 }

arch/mips/math-emu/sp_fint.c

@@ -66,5 +66,5 @@ union ieee754sp ieee754sp_fint(int x)
 			xe--;
 		}
 	}
-	SPNORMRET1(xs, xe, xm, "fint", x);
+	return ieee754sp_format(xs, xe, xm);
 }

arch/mips/math-emu/sp_flong.c

@@ -65,5 +65,5 @@ union ieee754sp ieee754sp_flong(s64 x)
 			xe--;
 		}
 	}
-	SPNORMRET1(xs, xe, xm, "sp_flong", x);
+	return ieee754sp_format(xs, xe, xm);
 }

arch/mips/math-emu/sp_mul.c

@@ -52,7 +52,7 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y)
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_DNORM):
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_nanxcpt(ieee754sp_indef(), "mul", x, y);
+		return ieee754sp_nanxcpt(ieee754sp_indef());
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
@@ -73,7 +73,7 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y)
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_ZERO):
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_xcpt(ieee754sp_indef(), "mul", x, y);
+		return ieee754sp_indef();
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_INF):
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_INF):
@@ -165,6 +165,6 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y)
 		}
 		assert(rm & (SP_HIDDEN_BIT << 3));
 
-		SPNORMRET2(rs, re, rm, "mul", x, y);
+		return ieee754sp_format(rs, re, rm);
 	}
 }

arch/mips/math-emu/sp_simple.c

@@ -45,7 +45,7 @@ union ieee754sp ieee754sp_neg(union ieee754sp x)
 		union ieee754sp y = ieee754sp_indef();
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		SPSIGN(y) = SPSIGN(x);
-		return ieee754sp_nanxcpt(y, "neg");
+		return ieee754sp_nanxcpt(y);
 	}
 
 	return x;
@@ -65,7 +65,7 @@ union ieee754sp ieee754sp_abs(union ieee754sp x)
 
 	if (xc == IEEE754_CLASS_SNAN) {
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_nanxcpt(ieee754sp_indef(), "abs");
+		return ieee754sp_nanxcpt(ieee754sp_indef());
 	}
 
 	return x;

arch/mips/math-emu/sp_sqrt.c

@@ -42,10 +42,10 @@ union ieee754sp ieee754sp_sqrt(union ieee754sp x)
 	switch (xc) {
 	case IEEE754_CLASS_QNAN:
 		/* sqrt(Nan) = Nan */
-		return ieee754sp_nanxcpt(x, "sqrt");
+		return ieee754sp_nanxcpt(x);
 	case IEEE754_CLASS_SNAN:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_nanxcpt(ieee754sp_indef(), "sqrt");
+		return ieee754sp_nanxcpt(ieee754sp_indef());
 	case IEEE754_CLASS_ZERO:
 		/* sqrt(0) = 0 */
 		return x;
@@ -53,7 +53,7 @@ union ieee754sp ieee754sp_sqrt(union ieee754sp x)
 		if (xs) {
 			/* sqrt(-Inf) = Nan */
 			ieee754_setcx(IEEE754_INVALID_OPERATION);
-			return ieee754sp_nanxcpt(ieee754sp_indef(), "sqrt");
+			return ieee754sp_nanxcpt(ieee754sp_indef());
 		}
 		/* sqrt(+Inf) = Inf */
 		return x;
@@ -62,7 +62,7 @@ union ieee754sp ieee754sp_sqrt(union ieee754sp x)
 		if (xs) {
 			/* sqrt(-x) = Nan */
 			ieee754_setcx(IEEE754_INVALID_OPERATION);
-			return ieee754sp_nanxcpt(ieee754sp_indef(), "sqrt");
+			return ieee754sp_nanxcpt(ieee754sp_indef());
 		}
 		break;
 	}

arch/mips/math-emu/sp_sub.c

@@ -52,7 +52,7 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_DNORM):
 	case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_nanxcpt(ieee754sp_indef(), "sub", x, y);
+		return ieee754sp_nanxcpt(ieee754sp_indef());
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
@@ -75,7 +75,7 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
 		if (xs != ys)
 			return x;
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754sp_xcpt(ieee754sp_indef(), "sub", x, y);
+		return ieee754sp_indef();
 
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_INF):
@@ -179,5 +179,6 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
 			xe--;
 		}
 	}
-	SPNORMRET2(xs, xe, xm, "sub", x, y);
+
+	return ieee754sp_format(xs, xe, xm);
 }

arch/mips/math-emu/sp_tint.c

@@ -40,7 +40,7 @@ int ieee754sp_tint(union ieee754sp x)
 	case IEEE754_CLASS_QNAN:
 	case IEEE754_CLASS_INF:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754si_xcpt(ieee754si_indef(), "sp_tint", x);
+		return ieee754si_indef();
 	case IEEE754_CLASS_ZERO:
 		return 0;
 	case IEEE754_CLASS_DNORM:
@@ -54,7 +54,7 @@ int ieee754sp_tint(union ieee754sp x)
 		/* Set invalid. We will only use overflow for floating
 		   point overflow */
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754si_xcpt(ieee754si_indef(), "sp_tint", x);
+		return ieee754si_indef();
 	}
 	/* oh gawd */
 	if (xe > SP_FBITS) {
@@ -100,7 +100,7 @@ int ieee754sp_tint(union ieee754sp x)
 		if ((xm >> 31) != 0) {
 			/* This can happen after rounding */
 			ieee754_setcx(IEEE754_INVALID_OPERATION);
-			return ieee754si_xcpt(ieee754si_indef(), "sp_tint", x);
+			return ieee754si_indef();
 		}
 		if (round || sticky)
 			ieee754_setcx(IEEE754_INEXACT);

arch/mips/math-emu/sp_tlong.c

@@ -41,7 +41,7 @@ s64 ieee754sp_tlong(union ieee754sp x)
 	case IEEE754_CLASS_QNAN:
 	case IEEE754_CLASS_INF:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754di_xcpt(ieee754di_indef(), "sp_tlong", x);
+		return ieee754di_indef();
 	case IEEE754_CLASS_ZERO:
 		return 0;
 	case IEEE754_CLASS_DNORM:
@@ -55,7 +55,7 @@ s64 ieee754sp_tlong(union ieee754sp x)
 		/* Set invalid. We will only use overflow for floating
 		   point overflow */
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
-		return ieee754di_xcpt(ieee754di_indef(), "sp_tlong", x);
+		return ieee754di_indef();
 	}
 	/* oh gawd */
 	if (xe > SP_FBITS) {
@@ -97,7 +97,7 @@ s64 ieee754sp_tlong(union ieee754sp x)
 		if ((xm >> 63) != 0) {
 			/* This can happen after rounding */
 			ieee754_setcx(IEEE754_INVALID_OPERATION);
-			return ieee754di_xcpt(ieee754di_indef(), "sp_tlong", x);
+			return ieee754di_indef();
 		}
 		if (round || sticky)
 			ieee754_setcx(IEEE754_INEXACT);