ARM: Merge latest VFP fixes from 3dmoo team.

1 files changed, 1112 insertions, 943 deletions

diff --git a/src/core/arm/skyeye_common/vfp/vfpdouble.cpp b/src/core/arm/skyeye_common/vfp/vfpdouble.cpp
index 13411ad8..765c1f6b 100644
--- a/src/core/arm/skyeye_common/vfp/vfpdouble.cpp
+++ b/src/core/arm/skyeye_common/vfp/vfpdouble.cpp
@@ -56,163 +56,291 @@
 #include "core/arm/skyeye_common/vfp/asm_vfp.h"
 
 static struct vfp_double vfp_double_default_qnan = {
-	//.exponent	= 2047,
-	//.sign		= 0,
-	//.significand	= VFP_DOUBLE_SIGNIFICAND_QNAN,
+    2047,
+    0,
+    VFP_DOUBLE_SIGNIFICAND_QNAN,
 };
 
 static void vfp_double_dump(const char *str, struct vfp_double *d)
 {
-	pr_debug("VFP: %s: sign=%d exponent=%d significand=%016llx\n",
-		 str, d->sign != 0, d->exponent, d->significand);
+    pr_debug("VFP: %s: sign=%d exponent=%d significand=%016llx\n",
+             str, d->sign != 0, d->exponent, d->significand);
 }
 
 static void vfp_double_normalise_denormal(struct vfp_double *vd)
 {
-	int bits = 31 - vfp_fls(vd->significand >> 32);
-	if (bits == 31)
-		bits = 63 - vfp_fls(vd->significand);
+    int bits = 31 - fls((ARMword)(vd->significand >> 32));
+    if (bits == 31)
+        bits = 63 - fls((ARMword)vd->significand);
 
-	vfp_double_dump("normalise_denormal: in", vd);
+    vfp_double_dump("normalise_denormal: in", vd);
 
-	if (bits) {
-		vd->exponent -= bits - 1;
-		vd->significand <<= bits;
-	}
+    if (bits) {
+        vd->exponent -= bits - 1;
+        vd->significand <<= bits;
+    }
 
-	vfp_double_dump("normalise_denormal: out", vd);
+    vfp_double_dump("normalise_denormal: out", vd);
 }
 
-u32 vfp_double_normaliseround(ARMul_State* state, int dd, struct vfp_double *vd, u32 fpscr, u32 exceptions, const char *func)
+u32 vfp_double_normaliseroundintern(ARMul_State* state, struct vfp_double *vd, u32 fpscr, u32 exceptions, const char *func)
 {
-	u64 significand, incr;
-	int exponent, shift, underflow;
-	u32 rmode;
-
-	vfp_double_dump("pack: in", vd);
-
-	/*
-	 * Infinities and NaNs are a special case.
-	 */
-	if (vd->exponent == 2047 && (vd->significand == 0 || exceptions))
-		goto pack;
-
-	/*
-	 * Special-case zero.
-	 */
-	if (vd->significand == 0) {
-		vd->exponent = 0;
-		goto pack;
-	}
-
-	exponent = vd->exponent;
-	significand = vd->significand;
-
-	shift = 32 - vfp_fls(significand >> 32);
-	if (shift == 32)
-		shift = 64 - vfp_fls(significand);
-	if (shift) {
-		exponent -= shift;
-		significand <<= shift;
-	}
+    u64 significand, incr;
+    int exponent, shift, underflow;
+    u32 rmode;
+
+    vfp_double_dump("pack: in", vd);
+
+    /*
+    * Infinities and NaNs are a special case.
+    */
+    if (vd->exponent == 2047 && (vd->significand == 0 || exceptions))
+        goto pack;
+
+    /*
+    * Special-case zero.
+    */
+    if (vd->significand == 0) {
+        vd->exponent = 0;
+        goto pack;
+    }
+
+    exponent = vd->exponent;
+    significand = vd->significand;
+
+    shift = 32 - fls((ARMword)(significand >> 32));
+    if (shift == 32)
+        shift = 64 - fls((ARMword)significand);
+    if (shift) {
+        exponent -= shift;
+        significand <<= shift;
+    }
 
 #if 1
-	vd->exponent = exponent;
-	vd->significand = significand;
-	vfp_double_dump("pack: normalised", vd);
+    vd->exponent = exponent;
+    vd->significand = significand;
+    vfp_double_dump("pack: normalised", vd);
 #endif
 
-	/*
-	 * Tiny number?
-	 */
-	underflow = exponent < 0;
-	if (underflow) {
-		significand = vfp_shiftright64jamming(significand, -exponent);
-		exponent = 0;
+    /*
+    * Tiny number?
+    */
+    underflow = exponent < 0;
+    if (underflow) {
+        significand = vfp_shiftright64jamming(significand, -exponent);
+        exponent = 0;
 #if 1
-		vd->exponent = exponent;
-		vd->significand = significand;
-		vfp_double_dump("pack: tiny number", vd);
+        vd->exponent = exponent;
+        vd->significand = significand;
+        vfp_double_dump("pack: tiny number", vd);
 #endif
-		if (!(significand & ((1ULL << (VFP_DOUBLE_LOW_BITS + 1)) - 1)))
-			underflow = 0;
-	}
-
-	/*
-	 * Select rounding increment.
-	 */
-	incr = 0;
-	rmode = fpscr & FPSCR_RMODE_MASK;
-
-	if (rmode == FPSCR_ROUND_NEAREST) {
-		incr = 1ULL << VFP_DOUBLE_LOW_BITS;
-		if ((significand & (1ULL << (VFP_DOUBLE_LOW_BITS + 1))) == 0)
-			incr -= 1;
-	} else if (rmode == FPSCR_ROUND_TOZERO) {
-		incr = 0;
-	} else if ((rmode == FPSCR_ROUND_PLUSINF) ^ (vd->sign != 0))
-		incr = (1ULL << (VFP_DOUBLE_LOW_BITS + 1)) - 1;
-
-	pr_debug("VFP: rounding increment = 0x%08llx\n", incr);
-
-	/*
-	 * Is our rounding going to overflow?
-	 */
-	if ((significand + incr) < significand) {
-		exponent += 1;
-		significand = (significand >> 1) | (significand & 1);
-		incr >>= 1;
+        if (!(significand & ((1ULL << (VFP_DOUBLE_LOW_BITS + 1)) - 1)))
+            underflow = 0;
+    }
+
+    /*
+    * Select rounding increment.
+    */
+    incr = 0;
+    rmode = fpscr & FPSCR_RMODE_MASK;
+
+    if (rmode == FPSCR_ROUND_NEAREST) {
+        incr = 1ULL << VFP_DOUBLE_LOW_BITS;
+        if ((significand & (1ULL << (VFP_DOUBLE_LOW_BITS + 1))) == 0)
+            incr -= 1;
+    }
+    else if (rmode == FPSCR_ROUND_TOZERO) {
+        incr = 0;
+    }
+    else if ((rmode == FPSCR_ROUND_PLUSINF) ^ (vd->sign != 0))
+        incr = (1ULL << (VFP_DOUBLE_LOW_BITS + 1)) - 1;
+
+    pr_debug("VFP: rounding increment = 0x%08llx\n", incr);
+
+    /*
+    * Is our rounding going to overflow?
+    */
+    if ((significand + incr) < significand) {
+        exponent += 1;
+        significand = (significand >> 1) | (significand & 1);
+        incr >>= 1;
 #if 1
-		vd->exponent = exponent;
-		vd->significand = significand;
-		vfp_double_dump("pack: overflow", vd);
+        vd->exponent = exponent;
+        vd->significand = significand;
+        vfp_double_dump("pack: overflow", vd);
 #endif
-	}
-
-	/*
-	 * If any of the low bits (which will be shifted out of the
-	 * number) are non-zero, the result is inexact.
-	 */
-	if (significand & ((1 << (VFP_DOUBLE_LOW_BITS + 1)) - 1))
-		exceptions |= FPSCR_IXC;
-
-	/*
-	 * Do our rounding.
-	 */
-	significand += incr;
-
-	/*
-	 * Infinity?
-	 */
-	if (exponent >= 2046) {
-		exceptions |= FPSCR_OFC | FPSCR_IXC;
-		if (incr == 0) {
-			vd->exponent = 2045;
-			vd->significand = 0x7fffffffffffffffULL;
-		} else {
-			vd->exponent = 2047;		/* infinity */
-			vd->significand = 0;
-		}
-	} else {
-		if (significand >> (VFP_DOUBLE_LOW_BITS + 1) == 0)
-			exponent = 0;
-		if (exponent || significand > 0x8000000000000000ULL)
-			underflow = 0;
-		if (underflow)
-			exceptions |= FPSCR_UFC;
-		vd->exponent = exponent;
-		vd->significand = significand >> 1;
-	}
-
+    }
+
+    /*
+    * If any of the low bits (which will be shifted out of the
+    * number) are non-zero, the result is inexact.
+    */
+    if (significand & ((1 << (VFP_DOUBLE_LOW_BITS + 1)) - 1))
+        exceptions |= FPSCR_IXC;
+
+    /*
+    * Do our rounding.
+    */
+    significand += incr;
+
+    /*
+    * Infinity?
+    */
+    if (exponent >= 2046) {
+        exceptions |= FPSCR_OFC | FPSCR_IXC;
+        if (incr == 0) {
+            vd->exponent = 2045;
+            vd->significand = 0x7fffffffffffffffULL;
+        }
+        else {
+            vd->exponent = 2047;		/* infinity */
+            vd->significand = 0;
+        }
+    }
+    else {
+        if (significand >> (VFP_DOUBLE_LOW_BITS + 1) == 0)
+            exponent = 0;
+        if (exponent || significand > 0x8000000000000000ULL)
+            underflow = 0;
+        if (underflow)
+            exceptions |= FPSCR_UFC;
+        vd->exponent = exponent;
+        vd->significand = significand >> 1;
+    }
  pack:
-	vfp_double_dump("pack: final", vd);
-	{
-		s64 d = vfp_double_pack(vd);
-		pr_debug("VFP: %s: d(d%d)=%016llx exceptions=%08x\n", func,
-			 dd, d, exceptions);
-		vfp_put_double(state, d, dd);
-	}
-	return exceptions;
+    return 0;
+}
+
+u32 vfp_double_normaliseround(ARMul_State* state, int dd, struct vfp_double *vd, u32 fpscr, u32 exceptions, const char *func)
+{
+    u64 significand, incr;
+    int exponent, shift, underflow;
+    u32 rmode;
+
+    vfp_double_dump("pack: in", vd);
+
+    /*
+     * Infinities and NaNs are a special case.
+     */
+    if (vd->exponent == 2047 && (vd->significand == 0 || exceptions))
+        goto pack;
+
+    /*
+     * Special-case zero.
+     */
+    if (vd->significand == 0) {
+        vd->exponent = 0;
+        goto pack;
+    }
+
+    exponent = vd->exponent;
+    significand = vd->significand;
+
+    shift = 32 - fls((ARMword)(significand >> 32));
+    if (shift == 32)
+        shift = 64 - fls((ARMword)significand);
+    if (shift) {
+        exponent -= shift;
+        significand <<= shift;
+    }
+
+#if 1
+    vd->exponent = exponent;
+    vd->significand = significand;
+    vfp_double_dump("pack: normalised", vd);
+#endif
+
+    /*
+     * Tiny number?
+     */
+    underflow = exponent < 0;
+    if (underflow) {
+        significand = vfp_shiftright64jamming(significand, -exponent);
+        exponent = 0;
+#if 1
+        vd->exponent = exponent;
+        vd->significand = significand;
+        vfp_double_dump("pack: tiny number", vd);
+#endif
+        if (!(significand & ((1ULL << (VFP_DOUBLE_LOW_BITS + 1)) - 1)))
+            underflow = 0;
+    }
+
+    /*
+     * Select rounding increment.
+     */
+    incr = 0;
+    rmode = fpscr & FPSCR_RMODE_MASK;
+
+    if (rmode == FPSCR_ROUND_NEAREST) {
+        incr = 1ULL << VFP_DOUBLE_LOW_BITS;
+        if ((significand & (1ULL << (VFP_DOUBLE_LOW_BITS + 1))) == 0)
+            incr -= 1;
+    } else if (rmode == FPSCR_ROUND_TOZERO) {
+        incr = 0;
+    } else if ((rmode == FPSCR_ROUND_PLUSINF) ^ (vd->sign != 0))
+        incr = (1ULL << (VFP_DOUBLE_LOW_BITS + 1)) - 1;
+
+    pr_debug("VFP: rounding increment = 0x%08llx\n", incr);
+
+    /*
+     * Is our rounding going to overflow?
+     */
+    if ((significand + incr) < significand) {
+        exponent += 1;
+        significand = (significand >> 1) | (significand & 1);
+        incr >>= 1;
+#if 1
+        vd->exponent = exponent;
+        vd->significand = significand;
+        vfp_double_dump("pack: overflow", vd);
+#endif
+    }
+
+    /*
+     * If any of the low bits (which will be shifted out of the
+     * number) are non-zero, the result is inexact.
+     */
+    if (significand & ((1 << (VFP_DOUBLE_LOW_BITS + 1)) - 1))
+        exceptions |= FPSCR_IXC;
+
+    /*
+     * Do our rounding.
+     */
+    significand += incr;
+
+    /*
+     * Infinity?
+     */
+    if (exponent >= 2046) {
+        exceptions |= FPSCR_OFC | FPSCR_IXC;
+        if (incr == 0) {
+            vd->exponent = 2045;
+            vd->significand = 0x7fffffffffffffffULL;
+        } else {
+            vd->exponent = 2047;		/* infinity */
+            vd->significand = 0;
+        }
+    } else {
+        if (significand >> (VFP_DOUBLE_LOW_BITS + 1) == 0)
+            exponent = 0;
+        if (exponent || significand > 0x8000000000000000ULL)
+            underflow = 0;
+        if (underflow)
+            exceptions |= FPSCR_UFC;
+        vd->exponent = exponent;
+        vd->significand = significand >> 1;
+    }
+
+pack:
+    vfp_double_dump("pack: final", vd);
+    {
+        s64 d = vfp_double_pack(vd);
+        pr_debug("VFP: %s: d(d%d)=%016llx exceptions=%08x\n", func,
+                 dd, d, exceptions);
+        vfp_put_double(state, d, dd);
+    }
+    return exceptions;
 }
 
 /*
@@ -221,43 +349,43 @@ u32 vfp_double_normaliseround(ARMul_State* state, int dd, struct vfp_double *vd,
  */
 static u32
 vfp_propagate_nan(struct vfp_double *vdd, struct vfp_double *vdn,
-		  struct vfp_double *vdm, u32 fpscr)
+                  struct vfp_double *vdm, u32 fpscr)
 {
-	struct vfp_double *nan;
-	int tn, tm = 0;
-
-	tn = vfp_double_type(vdn);
-
-	if (vdm)
-		tm = vfp_double_type(vdm);
-
-	if (fpscr & FPSCR_DEFAULT_NAN)
-		/*
-		 * Default NaN mode - always returns a quiet NaN
-		 */
-		nan = &vfp_double_default_qnan;
-	else {
-		/*
-		 * Contemporary mode - select the first signalling
-		 * NAN, or if neither are signalling, the first
-		 * quiet NAN.
-		 */
-		if (tn == VFP_SNAN || (tm != VFP_SNAN && tn == VFP_QNAN))
-			nan = vdn;
-		else
-			nan = vdm;
-		/*
-		 * Make the NaN quiet.
-		 */
-		nan->significand |= VFP_DOUBLE_SIGNIFICAND_QNAN;
-	}
-
-	*vdd = *nan;
-
-	/*
-	 * If one was a signalling NAN, raise invalid operation.
-	 */
-	return tn == VFP_SNAN || tm == VFP_SNAN ? FPSCR_IOC : VFP_NAN_FLAG;
+    struct vfp_double *nan;
+    int tn, tm = 0;
+
+    tn = vfp_double_type(vdn);
+
+    if (vdm)
+        tm = vfp_double_type(vdm);
+
+    if (fpscr & FPSCR_DEFAULT_NAN)
+        /*
+         * Default NaN mode - always returns a quiet NaN
+         */
+        nan = &vfp_double_default_qnan;
+    else {
+        /*
+         * Contemporary mode - select the first signalling
+         * NAN, or if neither are signalling, the first
+         * quiet NAN.
+         */
+        if (tn == VFP_SNAN || (tm != VFP_SNAN && tn == VFP_QNAN))
+            nan = vdn;
+        else
+            nan = vdm;
+        /*
+         * Make the NaN quiet.
+         */
+        nan->significand |= VFP_DOUBLE_SIGNIFICAND_QNAN;
+    }
+
+    *vdd = *nan;
+
+    /*
+     * If one was a signalling NAN, raise invalid operation.
+     */
+    return tn == VFP_SNAN || tm == VFP_SNAN ? FPSCR_IOC : VFP_NAN_FLAG;
 }
 
 /*
@@ -265,108 +393,108 @@ vfp_propagate_nan(struct vfp_double *vdd, struct vfp_double *vdn,
  */
 static u32 vfp_double_fabs(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	vfp_put_double(state, vfp_double_packed_abs(vfp_get_double(state, dm)), dd);
-	return 0;
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_put_double(state, vfp_double_packed_abs(vfp_get_double(state, dm)), dd);
+    return 0;
 }
 
 static u32 vfp_double_fcpy(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	vfp_put_double(state, vfp_get_double(state, dm), dd);
-	return 0;
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_put_double(state, vfp_get_double(state, dm), dd);
+    return 0;
 }
 
 static u32 vfp_double_fneg(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	vfp_put_double(state, vfp_double_packed_negate(vfp_get_double(state, dm)), dd);
-	return 0;
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_put_double(state, vfp_double_packed_negate(vfp_get_double(state, dm)), dd);
+    return 0;
 }
 
 static u32 vfp_double_fsqrt(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	struct vfp_double vdm, vdd, *vdp;
-	int ret, tm;
-
-	vfp_double_unpack(&vdm, vfp_get_double(state, dm));
-	tm = vfp_double_type(&vdm);
-	if (tm & (VFP_NAN|VFP_INFINITY)) {
-		vdp = &vdd;
-
-		if (tm & VFP_NAN)
-			ret = vfp_propagate_nan(vdp, &vdm, NULL, fpscr);
-		else if (vdm.sign == 0) {
- sqrt_copy:
-			vdp = &vdm;
-			ret = 0;
-		} else {
- sqrt_invalid:
-			vdp = &vfp_double_default_qnan;
-			ret = FPSCR_IOC;
-		}
-		vfp_put_double(state, vfp_double_pack(vdp), dd);
-		return ret;
-	}
-
-	/*
-	 * sqrt(+/- 0) == +/- 0
-	 */
-	if (tm & VFP_ZERO)
-		goto sqrt_copy;
-
-	/*
-	 * Normalise a denormalised number
-	 */
-	if (tm & VFP_DENORMAL)
-		vfp_double_normalise_denormal(&vdm);
-
-	/*
-	 * sqrt(<0) = invalid
-	 */
-	if (vdm.sign)
-		goto sqrt_invalid;
-
-	vfp_double_dump("sqrt", &vdm);
-
-	/*
-	 * Estimate the square root.
-	 */
-	vdd.sign = 0;
-	vdd.exponent = ((vdm.exponent - 1023) >> 1) + 1023;
-	vdd.significand = (u64)vfp_estimate_sqrt_significand(vdm.exponent, vdm.significand >> 32) << 31;
-
-	vfp_double_dump("sqrt estimate1", &vdd);
-
-	vdm.significand >>= 1 + (vdm.exponent & 1);
-	vdd.significand += 2 + vfp_estimate_div128to64(vdm.significand, 0, vdd.significand);
-
-	vfp_double_dump("sqrt estimate2", &vdd);
-
-	/*
-	 * And now adjust.
-	 */
-	if ((vdd.significand & VFP_DOUBLE_LOW_BITS_MASK) <= 5) {
-		if (vdd.significand < 2) {
-			vdd.significand = ~0ULL;
-		} else {
-			u64 termh, terml, remh, reml;
-			vdm.significand <<= 2;
-			mul64to128(&termh, &terml, vdd.significand, vdd.significand);
-			sub128(&remh, &reml, vdm.significand, 0, termh, terml);
-			while ((s64)remh < 0) {
-				vdd.significand -= 1;
-				shift64left(&termh, &terml, vdd.significand);
-				terml |= 1;
-				add128(&remh, &reml, remh, reml, termh, terml);
-			}
-			vdd.significand |= (remh | reml) != 0;
-		}
-	}
-	vdd.significand = vfp_shiftright64jamming(vdd.significand, 1);
-
-	return vfp_double_normaliseround(state, dd, &vdd, fpscr, 0, "fsqrt");
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_double vdm, vdd, *vdp;
+    int ret, tm;
+
+    vfp_double_unpack(&vdm, vfp_get_double(state, dm));
+    tm = vfp_double_type(&vdm);
+    if (tm & (VFP_NAN|VFP_INFINITY)) {
+        vdp = &vdd;
+
+        if (tm & VFP_NAN)
+            ret = vfp_propagate_nan(vdp, &vdm, NULL, fpscr);
+        else if (vdm.sign == 0) {
+sqrt_copy:
+            vdp = &vdm;
+            ret = 0;
+        } else {
+sqrt_invalid:
+            vdp = &vfp_double_default_qnan;
+            ret = FPSCR_IOC;
+        }
+        vfp_put_double(state, vfp_double_pack(vdp), dd);
+        return ret;
+    }
+
+    /*
+     * sqrt(+/- 0) == +/- 0
+     */
+    if (tm & VFP_ZERO)
+        goto sqrt_copy;
+
+    /*
+     * Normalise a denormalised number
+     */
+    if (tm & VFP_DENORMAL)
+        vfp_double_normalise_denormal(&vdm);
+
+    /*
+     * sqrt(<0) = invalid
+     */
+    if (vdm.sign)
+        goto sqrt_invalid;
+
+    vfp_double_dump("sqrt", &vdm);
+
+    /*
+     * Estimate the square root.
+     */
+    vdd.sign = 0;
+    vdd.exponent = ((vdm.exponent - 1023) >> 1) + 1023;
+    vdd.significand = (u64)vfp_estimate_sqrt_significand(vdm.exponent, vdm.significand >> 32) << 31;
+
+    vfp_double_dump("sqrt estimate1", &vdd);
+
+    vdm.significand >>= 1 + (vdm.exponent & 1);
+    vdd.significand += 2 + vfp_estimate_div128to64(vdm.significand, 0, vdd.significand);
+
+    vfp_double_dump("sqrt estimate2", &vdd);
+
+    /*
+     * And now adjust.
+     */
+    if ((vdd.significand & VFP_DOUBLE_LOW_BITS_MASK) <= 5) {
+        if (vdd.significand < 2) {
+            vdd.significand = ~0ULL;
+        } else {
+            u64 termh, terml, remh, reml;
+            vdm.significand <<= 2;
+            mul64to128(&termh, &terml, vdd.significand, vdd.significand);
+            sub128(&remh, &reml, vdm.significand, 0, termh, terml);
+            while ((s64)remh < 0) {
+                vdd.significand -= 1;
+                shift64left(&termh, &terml, vdd.significand);
+                terml |= 1;
+                add128(&remh, &reml, remh, reml, termh, terml);
+            }
+            vdd.significand |= (remh | reml) != 0;
+        }
+    }
+    vdd.significand = vfp_shiftright64jamming(vdd.significand, 1);
+
+    return vfp_double_normaliseround(state, dd, &vdd, fpscr, 0, "fsqrt");
 }
 
 /*
@@ -377,319 +505,362 @@ static u32 vfp_double_fsqrt(ARMul_State* state, int dd, int unused, int dm, u32
  */
 static u32 vfp_compare(ARMul_State* state, int dd, int signal_on_qnan, int dm, u32 fpscr)
 {
-	s64 d, m;
-	u32 ret = 0;
-
-	pr_debug("In %s, state=0x%x, fpscr=0x%x\n", __FUNCTION__, state, fpscr);
-	m = vfp_get_double(state, dm);
-	if (vfp_double_packed_exponent(m) == 2047 && vfp_double_packed_mantissa(m)) {
-		ret |= FPSCR_C | FPSCR_V;
-		if (signal_on_qnan || !(vfp_double_packed_mantissa(m) & (1ULL << (VFP_DOUBLE_MANTISSA_BITS - 1))))
-			/*
-			 * Signalling NaN, or signalling on quiet NaN
-			 */
-			ret |= FPSCR_IOC;
-	}
-
-	d = vfp_get_double(state, dd);
-	if (vfp_double_packed_exponent(d) == 2047 && vfp_double_packed_mantissa(d)) {
-		ret |= FPSCR_C | FPSCR_V;
-		if (signal_on_qnan || !(vfp_double_packed_mantissa(d) & (1ULL << (VFP_DOUBLE_MANTISSA_BITS - 1))))
-			/*
-			 * Signalling NaN, or signalling on quiet NaN
-			 */
-			ret |= FPSCR_IOC;
-	}
-
-	if (ret == 0) {
-		//printf("In %s, d=%lld, m =%lld\n ", __FUNCTION__, d, m);
-		if (d == m || vfp_double_packed_abs(d | m) == 0) {
-			/*
-			 * equal
-			 */
-			ret |= FPSCR_Z | FPSCR_C;
-			//printf("In %s,1 ret=0x%x\n", __FUNCTION__, ret);
-		} else if (vfp_double_packed_sign(d ^ m)) {
-			/*
-			 * different signs
-			 */
-			if (vfp_double_packed_sign(d))
-				/*
-				 * d is negative, so d < m
-				 */
-				ret |= FPSCR_N;
-			else
-				/*
-				 * d is positive, so d > m
-				 */
-				ret |= FPSCR_C;
-		} else if ((vfp_double_packed_sign(d) != 0) ^ (d < m)) {
-			/*
-			 * d < m
-			 */
-			ret |= FPSCR_N;
-		} else if ((vfp_double_packed_sign(d) != 0) ^ (d > m)) {
-			/*
-			 * d > m
-			 */
-			ret |= FPSCR_C;
-		}
-	}
-	pr_debug("In %s, state=0x%x, ret=0x%x\n", __FUNCTION__, state, ret);
-
-	return ret;
+    s64 d, m;
+    u32 ret = 0;
+
+    pr_debug("In %s, state=0x%x, fpscr=0x%x\n", __FUNCTION__, state, fpscr);
+    m = vfp_get_double(state, dm);
+    if (vfp_double_packed_exponent(m) == 2047 && vfp_double_packed_mantissa(m)) {
+        ret |= FPSCR_C | FPSCR_V;
+        if (signal_on_qnan || !(vfp_double_packed_mantissa(m) & (1ULL << (VFP_DOUBLE_MANTISSA_BITS - 1))))
+            /*
+             * Signalling NaN, or signalling on quiet NaN
+             */
+            ret |= FPSCR_IOC;
+    }
+
+    d = vfp_get_double(state, dd);
+    if (vfp_double_packed_exponent(d) == 2047 && vfp_double_packed_mantissa(d)) {
+        ret |= FPSCR_C | FPSCR_V;
+        if (signal_on_qnan || !(vfp_double_packed_mantissa(d) & (1ULL << (VFP_DOUBLE_MANTISSA_BITS - 1))))
+            /*
+             * Signalling NaN, or signalling on quiet NaN
+             */
+            ret |= FPSCR_IOC;
+    }
+
+    if (ret == 0) {
+        //printf("In %s, d=%lld, m =%lld\n ", __FUNCTION__, d, m);
+        if (d == m || vfp_double_packed_abs(d | m) == 0) {
+            /*
+             * equal
+             */
+            ret |= FPSCR_Z | FPSCR_C;
+            //printf("In %s,1 ret=0x%x\n", __FUNCTION__, ret);
+        } else if (vfp_double_packed_sign(d ^ m)) {
+            /*
+             * different signs
+             */
+            if (vfp_double_packed_sign(d))
+                /*
+                 * d is negative, so d < m
+                 */
+                ret |= FPSCR_N;
+            else
+                /*
+                 * d is positive, so d > m
+                 */
+                ret |= FPSCR_C;
+        } else if ((vfp_double_packed_sign(d) != 0) ^ (d < m)) {
+            /*
+             * d < m
+             */
+            ret |= FPSCR_N;
+        } else if ((vfp_double_packed_sign(d) != 0) ^ (d > m)) {
+            /*
+             * d > m
+             */
+            ret |= FPSCR_C;
+        }
+    }
+    pr_debug("In %s, state=0x%x, ret=0x%x\n", __FUNCTION__, state, ret);
+
+    return ret;
 }
 
 static u32 vfp_double_fcmp(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	return vfp_compare(state, dd, 0, dm, fpscr);
+    pr_debug("In %s\n", __FUNCTION__);
+    return vfp_compare(state, dd, 0, dm, fpscr);
 }
 
 static u32 vfp_double_fcmpe(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	return vfp_compare(state, dd, 1, dm, fpscr);
+    pr_debug("In %s\n", __FUNCTION__);
+    return vfp_compare(state, dd, 1, dm, fpscr);
 }
 
 static u32 vfp_double_fcmpz(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	return vfp_compare(state, dd, 0, VFP_REG_ZERO, fpscr);
+    pr_debug("In %s\n", __FUNCTION__);
+    return vfp_compare(state, dd, 0, VFP_REG_ZERO, fpscr);
 }
 
 static u32 vfp_double_fcmpez(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	return vfp_compare(state, dd, 1, VFP_REG_ZERO, fpscr);
+    pr_debug("In %s\n", __FUNCTION__);
+    return vfp_compare(state, dd, 1, VFP_REG_ZERO, fpscr);
+}
+
+u32 vfp_double_fcvtsinterncutting(ARMul_State* state, int sd, struct vfp_double* dm, u32 fpscr) //ichfly for internal use only
+{
+    struct vfp_single vsd;
+    int tm;
+    u32 exceptions = 0;
+
+    pr_debug("In %s\n", __FUNCTION__);
+
+    tm = vfp_double_type(dm);
+
+    /*
+    * If we have a signalling NaN, signal invalid operation.
+    */
+    if (tm == VFP_SNAN)
+        exceptions = FPSCR_IOC;
+
+    if (tm & VFP_DENORMAL)
+        vfp_double_normalise_denormal(dm);
+
+    vsd.sign = dm->sign;
+    vsd.significand = vfp_hi64to32jamming(dm->significand);
+
+    /*
+    * If we have an infinity or a NaN, the exponent must be 255
+    */
+    if (tm & (VFP_INFINITY | VFP_NAN)) {
+        vsd.exponent = 255;
+        if (tm == VFP_QNAN)
+            vsd.significand |= VFP_SINGLE_SIGNIFICAND_QNAN;
+        goto pack_nan;
+    }
+    else if (tm & VFP_ZERO)
+        vsd.exponent = 0;
+    else
+        vsd.exponent = dm->exponent - (1023 - 127);
+
+    return vfp_single_normaliseround(state, sd, &vsd, fpscr, exceptions, "fcvts");
+
+pack_nan:
+    vfp_put_float(state, vfp_single_pack(&vsd), sd);
+    return exceptions;
 }
 
 static u32 vfp_double_fcvts(ARMul_State* state, int sd, int unused, int dm, u32 fpscr)
 {
-	struct vfp_double vdm;
-	struct vfp_single vsd;
-	int tm;
-	u32 exceptions = 0;
-
-	pr_debug("In %s\n", __FUNCTION__);
-	vfp_double_unpack(&vdm, vfp_get_double(state, dm));
-
-	tm = vfp_double_type(&vdm);
-
-	/*
-	 * If we have a signalling NaN, signal invalid operation.
-	 */
-	if (tm == VFP_SNAN)
-		exceptions = FPSCR_IOC;
-
-	if (tm & VFP_DENORMAL)
-		vfp_double_normalise_denormal(&vdm);
-
-	vsd.sign = vdm.sign;
-	vsd.significand = vfp_hi64to32jamming(vdm.significand);
-
-	/*
-	 * If we have an infinity or a NaN, the exponent must be 255
-	 */
-	if (tm & (VFP_INFINITY|VFP_NAN)) {
-		vsd.exponent = 255;
-		if (tm == VFP_QNAN)
-			vsd.significand |= VFP_SINGLE_SIGNIFICAND_QNAN;
-		goto pack_nan;
-	} else if (tm & VFP_ZERO)
-		vsd.exponent = 0;
-	else
-		vsd.exponent = vdm.exponent - (1023 - 127);
-
-	return vfp_single_normaliseround(state, sd, &vsd, fpscr, exceptions, "fcvts");
-
- pack_nan:
-	vfp_put_float(state, vfp_single_pack(&vsd), sd);
-	return exceptions;
+    struct vfp_double vdm;
+    struct vfp_single vsd;
+    int tm;
+    u32 exceptions = 0;
+
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_double_unpack(&vdm, vfp_get_double(state, dm));
+
+    tm = vfp_double_type(&vdm);
+
+    /*
+     * If we have a signalling NaN, signal invalid operation.
+     */
+    if (tm == VFP_SNAN)
+        exceptions = FPSCR_IOC;
+
+    if (tm & VFP_DENORMAL)
+        vfp_double_normalise_denormal(&vdm);
+
+    vsd.sign = vdm.sign;
+    vsd.significand = vfp_hi64to32jamming(vdm.significand);
+
+    /*
+     * If we have an infinity or a NaN, the exponent must be 255
+     */
+    if (tm & (VFP_INFINITY|VFP_NAN)) {
+        vsd.exponent = 255;
+        if (tm == VFP_QNAN)
+            vsd.significand |= VFP_SINGLE_SIGNIFICAND_QNAN;
+        goto pack_nan;
+    } else if (tm & VFP_ZERO)
+        vsd.exponent = 0;
+    else
+        vsd.exponent = vdm.exponent - (1023 - 127);
+
+    return vfp_single_normaliseround(state, sd, &vsd, fpscr, exceptions, "fcvts");
+
+pack_nan:
+    vfp_put_float(state, vfp_single_pack(&vsd), sd);
+    return exceptions;
 }
 
 static u32 vfp_double_fuito(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
 {
-	struct vfp_double vdm;
-	u32 m = vfp_get_float(state, dm);
+    struct vfp_double vdm;
+    u32 m = vfp_get_float(state, dm);
 
-	pr_debug("In %s\n", __FUNCTION__);
-	vdm.sign = 0;
-	vdm.exponent = 1023 + 63 - 1;
-	vdm.significand = (u64)m;
+    pr_debug("In %s\n", __FUNCTION__);
+    vdm.sign = 0;
+    vdm.exponent = 1023 + 63 - 1;
+    vdm.significand = (u64)m;
 
-	return vfp_double_normaliseround(state, dd, &vdm, fpscr, 0, "fuito");
+    return vfp_double_normaliseround(state, dd, &vdm, fpscr, 0, "fuito");
 }
 
 static u32 vfp_double_fsito(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
 {
-	struct vfp_double vdm;
-	u32 m = vfp_get_float(state, dm);
+    struct vfp_double vdm;
+    u32 m = vfp_get_float(state, dm);
 
-	pr_debug("In %s\n", __FUNCTION__);
-	vdm.sign = (m & 0x80000000) >> 16;
-	vdm.exponent = 1023 + 63 - 1;
-	vdm.significand = vdm.sign ? -m : m;
+    pr_debug("In %s\n", __FUNCTION__);
+    vdm.sign = (m & 0x80000000) >> 16;
+    vdm.exponent = 1023 + 63 - 1;
+    vdm.significand = vdm.sign ? -m : m;
 
-	return vfp_double_normaliseround(state, dd, &vdm, fpscr, 0, "fsito");
+    return vfp_double_normaliseround(state, dd, &vdm, fpscr, 0, "fsito");
 }
 
 static u32 vfp_double_ftoui(ARMul_State* state, int sd, int unused, int dm, u32 fpscr)
 {
-	struct vfp_double vdm;
-	u32 d, exceptions = 0;
-	int rmode = fpscr & FPSCR_RMODE_MASK;
-	int tm;
-
-	pr_debug("In %s\n", __FUNCTION__);
-	vfp_double_unpack(&vdm, vfp_get_double(state, dm));
-
-	/*
-	 * Do we have a denormalised number?
-	 */
-	tm = vfp_double_type(&vdm);
-	if (tm & VFP_DENORMAL)
-		exceptions |= FPSCR_IDC;
-
-	if (tm & VFP_NAN)
-		vdm.sign = 0;
-
-	if (vdm.exponent >= 1023 + 32) {
-		d = vdm.sign ? 0 : 0xffffffff;
-		exceptions = FPSCR_IOC;
-	} else if (vdm.exponent >= 1023 - 1) {
-		int shift = 1023 + 63 - vdm.exponent;
-		u64 rem, incr = 0;
-
-		/*
-		 * 2^0 <= m < 2^32-2^8
-		 */
-		d = (vdm.significand << 1) >> shift;
-		rem = vdm.significand << (65 - shift);
-
-		if (rmode == FPSCR_ROUND_NEAREST) {
-			incr = 0x8000000000000000ULL;
-			if ((d & 1) == 0)
-				incr -= 1;
-		} else if (rmode == FPSCR_ROUND_TOZERO) {
-			incr = 0;
-		} else if ((rmode == FPSCR_ROUND_PLUSINF) ^ (vdm.sign != 0)) {
-			incr = ~0ULL;
-		}
-
-		if ((rem + incr) < rem) {
-			if (d < 0xffffffff)
-				d += 1;
-			else
-				exceptions |= FPSCR_IOC;
-		}
-
-		if (d && vdm.sign) {
-			d = 0;
-			exceptions |= FPSCR_IOC;
-		} else if (rem)
-			exceptions |= FPSCR_IXC;
-	} else {
-		d = 0;
-		if (vdm.exponent | vdm.significand) {
-			exceptions |= FPSCR_IXC;
-			if (rmode == FPSCR_ROUND_PLUSINF && vdm.sign == 0)
-				d = 1;
-			else if (rmode == FPSCR_ROUND_MINUSINF && vdm.sign) {
-				d = 0;
-				exceptions |= FPSCR_IOC;
-			}
-		}
-	}
-
-	pr_debug("VFP: ftoui: d(s%d)=%08x exceptions=%08x\n", sd, d, exceptions);
-
-	vfp_put_float(state, d, sd);
-
-	return exceptions;
+    struct vfp_double vdm;
+    u32 d, exceptions = 0;
+    int rmode = fpscr & FPSCR_RMODE_MASK;
+    int tm;
+
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_double_unpack(&vdm, vfp_get_double(state, dm));
+
+    /*
+     * Do we have a denormalised number?
+     */
+    tm = vfp_double_type(&vdm);
+    if (tm & VFP_DENORMAL)
+        exceptions |= FPSCR_IDC;
+
+    if (tm & VFP_NAN)
+        vdm.sign = 0;
+
+    if (vdm.exponent >= 1023 + 32) {
+        d = vdm.sign ? 0 : 0xffffffff;
+        exceptions = FPSCR_IOC;
+    } else if (vdm.exponent >= 1023 - 1) {
+        int shift = 1023 + 63 - vdm.exponent;
+        u64 rem, incr = 0;
+
+        /*
+         * 2^0 <= m < 2^32-2^8
+         */
+        d = (ARMword)((vdm.significand << 1) >> shift);
+        rem = vdm.significand << (65 - shift);
+
+        if (rmode == FPSCR_ROUND_NEAREST) {
+            incr = 0x8000000000000000ULL;
+            if ((d & 1) == 0)
+                incr -= 1;
+        } else if (rmode == FPSCR_ROUND_TOZERO) {
+            incr = 0;
+        } else if ((rmode == FPSCR_ROUND_PLUSINF) ^ (vdm.sign != 0)) {
+            incr = ~0ULL;
+        }
+
+        if ((rem + incr) < rem) {
+            if (d < 0xffffffff)
+                d += 1;
+            else
+                exceptions |= FPSCR_IOC;
+        }
+
+        if (d && vdm.sign) {
+            d = 0;
+            exceptions |= FPSCR_IOC;
+        } else if (rem)
+            exceptions |= FPSCR_IXC;
+    } else {
+        d = 0;
+        if (vdm.exponent | vdm.significand) {
+            exceptions |= FPSCR_IXC;
+            if (rmode == FPSCR_ROUND_PLUSINF && vdm.sign == 0)
+                d = 1;
+            else if (rmode == FPSCR_ROUND_MINUSINF && vdm.sign) {
+                d = 0;
+                exceptions |= FPSCR_IOC;
+            }
+        }
+    }
+
+    pr_debug("VFP: ftoui: d(s%d)=%08x exceptions=%08x\n", sd, d, exceptions);
+
+    vfp_put_float(state, d, sd);
+
+    return exceptions;
 }
 
 static u32 vfp_double_ftouiz(ARMul_State* state, int sd, int unused, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	return vfp_double_ftoui(state, sd, unused, dm, FPSCR_ROUND_TOZERO);
+    pr_debug("In %s\n", __FUNCTION__);
+    return vfp_double_ftoui(state, sd, unused, dm, FPSCR_ROUND_TOZERO);
 }
 
 static u32 vfp_double_ftosi(ARMul_State* state, int sd, int unused, int dm, u32 fpscr)
 {
-	struct vfp_double vdm;
-	u32 d, exceptions = 0;
-	int rmode = fpscr & FPSCR_RMODE_MASK;
-	int tm;
-
-	pr_debug("In %s\n", __FUNCTION__);
-	vfp_double_unpack(&vdm, vfp_get_double(state, dm));
-	vfp_double_dump("VDM", &vdm);
-
-	/*
-	 * Do we have denormalised number?
-	 */
-	tm = vfp_double_type(&vdm);
-	if (tm & VFP_DENORMAL)
-		exceptions |= FPSCR_IDC;
-
-	if (tm & VFP_NAN) {
-		d = 0;
-		exceptions |= FPSCR_IOC;
-	} else if (vdm.exponent >= 1023 + 32) {
-		d = 0x7fffffff;
-		if (vdm.sign)
-			d = ~d;
-		exceptions |= FPSCR_IOC;
-	} else if (vdm.exponent >= 1023 - 1) {
-		int shift = 1023 + 63 - vdm.exponent;	/* 58 */
-		u64 rem, incr = 0;
-
-		d = (vdm.significand << 1) >> shift;
-		rem = vdm.significand << (65 - shift);
-
-		if (rmode == FPSCR_ROUND_NEAREST) {
-			incr = 0x8000000000000000ULL;
-			if ((d & 1) == 0)
-				incr -= 1;
-		} else if (rmode == FPSCR_ROUND_TOZERO) {
-			incr = 0;
-		} else if ((rmode == FPSCR_ROUND_PLUSINF) ^ (vdm.sign != 0)) {
-			incr = ~0ULL;
-		}
-
-		if ((rem + incr) < rem && d < 0xffffffff)
-			d += 1;
-		if (d > 0x7fffffff + (vdm.sign != 0)) {
-			d = 0x7fffffff + (vdm.sign != 0);
-			exceptions |= FPSCR_IOC;
-		} else if (rem)
-			exceptions |= FPSCR_IXC;
-
-		if (vdm.sign)
-			d = -d;
-	} else {
-		d = 0;
-		if (vdm.exponent | vdm.significand) {
-			exceptions |= FPSCR_IXC;
-			if (rmode == FPSCR_ROUND_PLUSINF && vdm.sign == 0)
-				d = 1;
-			else if (rmode == FPSCR_ROUND_MINUSINF && vdm.sign)
-				d = -1;
-		}
-	}
-
-	pr_debug("VFP: ftosi: d(s%d)=%08x exceptions=%08x\n", sd, d, exceptions);
-
-	vfp_put_float(state, (s32)d, sd);
-
-	return exceptions;
+    struct vfp_double vdm;
+    u32 d, exceptions = 0;
+    int rmode = fpscr & FPSCR_RMODE_MASK;
+    int tm;
+
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_double_unpack(&vdm, vfp_get_double(state, dm));
+    vfp_double_dump("VDM", &vdm);
+
+    /*
+     * Do we have denormalised number?
+     */
+    tm = vfp_double_type(&vdm);
+    if (tm & VFP_DENORMAL)
+        exceptions |= FPSCR_IDC;
+
+    if (tm & VFP_NAN) {
+        d = 0;
+        exceptions |= FPSCR_IOC;
+    } else if (vdm.exponent >= 1023 + 32) {
+        d = 0x7fffffff;
+        if (vdm.sign)
+            d = ~d;
+        exceptions |= FPSCR_IOC;
+    } else if (vdm.exponent >= 1023 - 1) {
+        int shift = 1023 + 63 - vdm.exponent;	/* 58 */
+        u64 rem, incr = 0;
+
+        d = (ARMword)((vdm.significand << 1) >> shift);
+        rem = vdm.significand << (65 - shift);
+
+        if (rmode == FPSCR_ROUND_NEAREST) {
+            incr = 0x8000000000000000ULL;
+            if ((d & 1) == 0)
+                incr -= 1;
+        } else if (rmode == FPSCR_ROUND_TOZERO) {
+            incr = 0;
+        } else if ((rmode == FPSCR_ROUND_PLUSINF) ^ (vdm.sign != 0)) {
+            incr = ~0ULL;
+        }
+
+        if ((rem + incr) < rem && d < 0xffffffff)
+            d += 1;
+        if (d > (0x7fffffff + (vdm.sign != 0))) {
+            d = (0x7fffffff + (vdm.sign != 0));
+            exceptions |= FPSCR_IOC;
+        } else if (rem)
+            exceptions |= FPSCR_IXC;
+
+        if (vdm.sign)
+            d = -d;
+    } else {
+        d = 0;
+        if (vdm.exponent | vdm.significand) {
+            exceptions |= FPSCR_IXC;
+            if (rmode == FPSCR_ROUND_PLUSINF && vdm.sign == 0)
+                d = 1;
+            else if (rmode == FPSCR_ROUND_MINUSINF && vdm.sign)
+                d = -1;
+        }
+    }
+
+    pr_debug("VFP: ftosi: d(s%d)=%08x exceptions=%08x\n", sd, d, exceptions);
+
+    vfp_put_float(state, (s32)d, sd);
+
+    return exceptions;
 }
 
 static u32 vfp_double_ftosiz(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	return vfp_double_ftosi(state, dd, unused, dm, FPSCR_ROUND_TOZERO);
+    pr_debug("In %s\n", __FUNCTION__);
+    return vfp_double_ftosi(state, dd, unused, dm, FPSCR_ROUND_TOZERO);
 }
 
 static struct op fops_ext[] = {
@@ -728,197 +899,195 @@ static struct op fops_ext[] = {
 
 static u32
 vfp_double_fadd_nonnumber(struct vfp_double *vdd, struct vfp_double *vdn,
-			  struct vfp_double *vdm, u32 fpscr)
+                          struct vfp_double *vdm, u32 fpscr)
 {
-	struct vfp_double *vdp;
-	u32 exceptions = 0;
-	int tn, tm;
-
-	tn = vfp_double_type(vdn);
-	tm = vfp_double_type(vdm);
-
-	if (tn & tm & VFP_INFINITY) {
-		/*
-		 * Two infinities.  Are they different signs?
-		 */
-		if (vdn->sign ^ vdm->sign) {
-			/*
-			 * different signs -> invalid
-			 */
-			exceptions = FPSCR_IOC;
-			vdp = &vfp_double_default_qnan;
-		} else {
-			/*
-			 * same signs -> valid
-			 */
-			vdp = vdn;
-		}
-	} else if (tn & VFP_INFINITY && tm & VFP_NUMBER) {
-		/*
-		 * One infinity and one number -> infinity
-		 */
-		vdp = vdn;
-	} else {
-		/*
-		 * 'n' is a NaN of some type
-		 */
-		return vfp_propagate_nan(vdd, vdn, vdm, fpscr);
-	}
-	*vdd = *vdp;
-	return exceptions;
+    struct vfp_double *vdp;
+    u32 exceptions = 0;
+    int tn, tm;
+
+    tn = vfp_double_type(vdn);
+    tm = vfp_double_type(vdm);
+
+    if (tn & tm & VFP_INFINITY) {
+        /*
+         * Two infinities.  Are they different signs?
+         */
+        if (vdn->sign ^ vdm->sign) {
+            /*
+             * different signs -> invalid
+             */
+            exceptions = FPSCR_IOC;
+            vdp = &vfp_double_default_qnan;
+        } else {
+            /*
+             * same signs -> valid
+             */
+            vdp = vdn;
+        }
+    } else if (tn & VFP_INFINITY && tm & VFP_NUMBER) {
+        /*
+         * One infinity and one number -> infinity
+         */
+        vdp = vdn;
+    } else {
+        /*
+         * 'n' is a NaN of some type
+         */
+        return vfp_propagate_nan(vdd, vdn, vdm, fpscr);
+    }
+    *vdd = *vdp;
+    return exceptions;
 }
 
-static u32
-vfp_double_add(struct vfp_double *vdd, struct vfp_double *vdn,
-	       struct vfp_double *vdm, u32 fpscr)
+u32 vfp_double_add(struct vfp_double *vdd, struct vfp_double *vdn,struct vfp_double *vdm, u32 fpscr)
 {
-	u32 exp_diff;
-	u64 m_sig;
-
-	if (vdn->significand & (1ULL << 63) ||
-	    vdm->significand & (1ULL << 63)) {
-		pr_info("VFP: bad FP values\n");
-		vfp_double_dump("VDN", vdn);
-		vfp_double_dump("VDM", vdm);
-	}
-
-	/*
-	 * Ensure that 'n' is the largest magnitude number.  Note that
-	 * if 'n' and 'm' have equal exponents, we do not swap them.
-	 * This ensures that NaN propagation works correctly.
-	 */
-	if (vdn->exponent < vdm->exponent) {
-		struct vfp_double *t = vdn;
-		vdn = vdm;
-		vdm = t;
-	}
-
-	/*
-	 * Is 'n' an infinity or a NaN?  Note that 'm' may be a number,
-	 * infinity or a NaN here.
-	 */
-	if (vdn->exponent == 2047)
-		return vfp_double_fadd_nonnumber(vdd, vdn, vdm, fpscr);
-
-	/*
-	 * We have two proper numbers, where 'vdn' is the larger magnitude.
-	 *
-	 * Copy 'n' to 'd' before doing the arithmetic.
-	 */
-	*vdd = *vdn;
-
-	/*
-	 * Align 'm' with the result.
-	 */
-	exp_diff = vdn->exponent - vdm->exponent;
-	m_sig = vfp_shiftright64jamming(vdm->significand, exp_diff);
-
-	/*
-	 * If the signs are different, we are really subtracting.
-	 */
-	if (vdn->sign ^ vdm->sign) {
-		m_sig = vdn->significand - m_sig;
-		if ((s64)m_sig < 0) {
-			vdd->sign = vfp_sign_negate(vdd->sign);
-			m_sig = -m_sig;
-		} else if (m_sig == 0) {
-			vdd->sign = (fpscr & FPSCR_RMODE_MASK) ==
-				      FPSCR_ROUND_MINUSINF ? 0x8000 : 0;
-		}
-	} else {
-		m_sig += vdn->significand;
-	}
-	vdd->significand = m_sig;
-
-	return 0;
+    u32 exp_diff;
+    u64 m_sig;
+
+    if (vdn->significand & (1ULL << 63) ||
+            vdm->significand & (1ULL << 63)) {
+        pr_info("VFP: bad FP values in %s\n", __func__);
+        vfp_double_dump("VDN", vdn);
+        vfp_double_dump("VDM", vdm);
+    }
+
+    /*
+     * Ensure that 'n' is the largest magnitude number.  Note that
+     * if 'n' and 'm' have equal exponents, we do not swap them.
+     * This ensures that NaN propagation works correctly.
+     */
+    if (vdn->exponent < vdm->exponent) {
+        struct vfp_double *t = vdn;
+        vdn = vdm;
+        vdm = t;
+    }
+
+    /*
+     * Is 'n' an infinity or a NaN?  Note that 'm' may be a number,
+     * infinity or a NaN here.
+     */
+    if (vdn->exponent == 2047)
+        return vfp_double_fadd_nonnumber(vdd, vdn, vdm, fpscr);
+
+    /*
+     * We have two proper numbers, where 'vdn' is the larger magnitude.
+     *
+     * Copy 'n' to 'd' before doing the arithmetic.
+     */
+    *vdd = *vdn;
+
+    /*
+     * Align 'm' with the result.
+     */
+    exp_diff = vdn->exponent - vdm->exponent;
+    m_sig = vfp_shiftright64jamming(vdm->significand, exp_diff);
+
+    /*
+     * If the signs are different, we are really subtracting.
+     */
+    if (vdn->sign ^ vdm->sign) {
+        m_sig = vdn->significand - m_sig;
+        if ((s64)m_sig < 0) {
+            vdd->sign = vfp_sign_negate(vdd->sign);
+            m_sig = -m_sig;
+        } else if (m_sig == 0) {
+            vdd->sign = (fpscr & FPSCR_RMODE_MASK) ==
+                        FPSCR_ROUND_MINUSINF ? 0x8000 : 0;
+        }
+    } else {
+        m_sig += vdn->significand;
+    }
+    vdd->significand = m_sig;
+
+    return 0;
 }
 
-static u32
+u32
 vfp_double_multiply(struct vfp_double *vdd, struct vfp_double *vdn,
-		    struct vfp_double *vdm, u32 fpscr)
+                    struct vfp_double *vdm, u32 fpscr)
 {
-	vfp_double_dump("VDN", vdn);
-	vfp_double_dump("VDM", vdm);
-
-	/*
-	 * Ensure that 'n' is the largest magnitude number.  Note that
-	 * if 'n' and 'm' have equal exponents, we do not swap them.
-	 * This ensures that NaN propagation works correctly.
-	 */
-	if (vdn->exponent < vdm->exponent) {
-		struct vfp_double *t = vdn;
-		vdn = vdm;
-		vdm = t;
-		pr_debug("VFP: swapping M <-> N\n");
-	}
-
-	vdd->sign = vdn->sign ^ vdm->sign;
-
-	/*
-	 * If 'n' is an infinity or NaN, handle it.  'm' may be anything.
-	 */
-	if (vdn->exponent == 2047) {
-		if (vdn->significand || (vdm->exponent == 2047 && vdm->significand))
-			return vfp_propagate_nan(vdd, vdn, vdm, fpscr);
-		if ((vdm->exponent | vdm->significand) == 0) {
-			*vdd = vfp_double_default_qnan;
-			return FPSCR_IOC;
-		}
-		vdd->exponent = vdn->exponent;
-		vdd->significand = 0;
-		return 0;
-	}
-
-	/*
-	 * If 'm' is zero, the result is always zero.  In this case,
-	 * 'n' may be zero or a number, but it doesn't matter which.
-	 */
-	if ((vdm->exponent | vdm->significand) == 0) {
-		vdd->exponent = 0;
-		vdd->significand = 0;
-		return 0;
-	}
-
-	/*
-	 * We add 2 to the destination exponent for the same reason
-	 * as the addition case - though this time we have +1 from
-	 * each input operand.
-	 */
-	vdd->exponent = vdn->exponent + vdm->exponent - 1023 + 2;
-	vdd->significand = vfp_hi64multiply64(vdn->significand, vdm->significand);
-
-	vfp_double_dump("VDD", vdd);
-	return 0;
+    vfp_double_dump("VDN", vdn);
+    vfp_double_dump("VDM", vdm);
+
+    /*
+     * Ensure that 'n' is the largest magnitude number.  Note that
+     * if 'n' and 'm' have equal exponents, we do not swap them.
+     * This ensures that NaN propagation works correctly.
+     */
+    if (vdn->exponent < vdm->exponent) {
+        struct vfp_double *t = vdn;
+        vdn = vdm;
+        vdm = t;
+        pr_debug("VFP: swapping M <-> N\n");
+    }
+
+    vdd->sign = vdn->sign ^ vdm->sign;
+
+    /*
+     * If 'n' is an infinity or NaN, handle it.  'm' may be anything.
+     */
+    if (vdn->exponent == 2047) {
+        if (vdn->significand || (vdm->exponent == 2047 && vdm->significand))
+            return vfp_propagate_nan(vdd, vdn, vdm, fpscr);
+        if ((vdm->exponent | vdm->significand) == 0) {
+            *vdd = vfp_double_default_qnan;
+            return FPSCR_IOC;
+        }
+        vdd->exponent = vdn->exponent;
+        vdd->significand = 0;
+        return 0;
+    }
+
+    /*
+     * If 'm' is zero, the result is always zero.  In this case,
+     * 'n' may be zero or a number, but it doesn't matter which.
+     */
+    if ((vdm->exponent | vdm->significand) == 0) {
+        vdd->exponent = 0;
+        vdd->significand = 0;
+        return 0;
+    }
+
+    /*
+     * We add 2 to the destination exponent for the same reason
+     * as the addition case - though this time we have +1 from
+     * each input operand.
+     */
+    vdd->exponent = vdn->exponent + vdm->exponent - 1023 + 2;
+    vdd->significand = vfp_hi64multiply64(vdn->significand, vdm->significand);
+
+    vfp_double_dump("VDD", vdd);
+    return 0;
 }
 
 #define NEG_MULTIPLY	(1 << 0)
 #define NEG_SUBTRACT	(1 << 1)
 
 static u32
-vfp_double_multiply_accumulate(ARMul_State* state, int dd, int dn, int dm, u32 fpscr, u32 negate, const char *func)
+vfp_double_multiply_accumulate(ARMul_State* state, int dd, int dn, int dm, u32 fpscr, u32 negate, char *func)
 {
-	struct vfp_double vdd, vdp, vdn, vdm;
-	u32 exceptions;
+    struct vfp_double vdd, vdp, vdn, vdm;
+    u32 exceptions;
 
-	vfp_double_unpack(&vdn, vfp_get_double(state, dn));
-	if (vdn.exponent == 0 && vdn.significand)
-		vfp_double_normalise_denormal(&vdn);
+    vfp_double_unpack(&vdn, vfp_get_double(state, dn));
+    if (vdn.exponent == 0 && vdn.significand)
+        vfp_double_normalise_denormal(&vdn);
 
-	vfp_double_unpack(&vdm, vfp_get_double(state, dm));
-	if (vdm.exponent == 0 && vdm.significand)
-		vfp_double_normalise_denormal(&vdm);
+    vfp_double_unpack(&vdm, vfp_get_double(state, dm));
+    if (vdm.exponent == 0 && vdm.significand)
+        vfp_double_normalise_denormal(&vdm);
 
-	exceptions = vfp_double_multiply(&vdp, &vdn, &vdm, fpscr);
-	if (negate & NEG_MULTIPLY)
-		vdp.sign = vfp_sign_negate(vdp.sign);
+    exceptions = vfp_double_multiply(&vdp, &vdn, &vdm, fpscr);
+    if (negate & NEG_MULTIPLY)
+        vdp.sign = vfp_sign_negate(vdp.sign);
 
-	vfp_double_unpack(&vdn, vfp_get_double(state, dd));
-	if (negate & NEG_SUBTRACT)
-		vdn.sign = vfp_sign_negate(vdn.sign);
+    vfp_double_unpack(&vdn, vfp_get_double(state, dd));
+    if (negate & NEG_SUBTRACT)
+        vdn.sign = vfp_sign_negate(vdn.sign);
 
-	exceptions |= vfp_double_add(&vdd, &vdn, &vdp, fpscr);
+    exceptions |= vfp_double_add(&vdd, &vdn, &vdp, fpscr);
 
-	return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, func);
+    return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, func);
 }
 
 /*
@@ -930,8 +1099,8 @@ vfp_double_multiply_accumulate(ARMul_State* state, int dd, int dn, int dm, u32 f
  */
 static u32 vfp_double_fmac(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	return vfp_double_multiply_accumulate(state, dd, dn, dm, fpscr, 0, "fmac");
+    pr_debug("In %s\n", __FUNCTION__);
+    return vfp_double_multiply_accumulate(state, dd, dn, dm, fpscr, 0, "fmac");
 }
 
 /*
@@ -939,8 +1108,8 @@ static u32 vfp_double_fmac(ARMul_State* state, int dd, int dn, int dm, u32 fpscr
  */
 static u32 vfp_double_fnmac(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	return vfp_double_multiply_accumulate(state, dd, dn, dm, fpscr, NEG_MULTIPLY, "fnmac");
+    pr_debug("In %s\n", __FUNCTION__);
+    return vfp_double_multiply_accumulate(state, dd, dn, dm, fpscr, NEG_MULTIPLY, "fnmac");
 }
 
 /*
@@ -948,8 +1117,8 @@ static u32 vfp_double_fnmac(ARMul_State* state, int dd, int dn, int dm, u32 fpsc
  */
 static u32 vfp_double_fmsc(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	return vfp_double_multiply_accumulate(state, dd, dn, dm, fpscr, NEG_SUBTRACT, "fmsc");
+    pr_debug("In %s\n", __FUNCTION__);
+    return vfp_double_multiply_accumulate(state, dd, dn, dm, fpscr, NEG_SUBTRACT, "fmsc");
 }
 
 /*
@@ -957,8 +1126,8 @@ static u32 vfp_double_fmsc(ARMul_State* state, int dd, int dn, int dm, u32 fpscr
  */
 static u32 vfp_double_fnmsc(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
 {
-	pr_debug("In %s\n", __FUNCTION__);
-	return vfp_double_multiply_accumulate(state, dd, dn, dm, fpscr, NEG_SUBTRACT | NEG_MULTIPLY, "fnmsc");
+    pr_debug("In %s\n", __FUNCTION__);
+    return vfp_double_multiply_accumulate(state, dd, dn, dm, fpscr, NEG_SUBTRACT | NEG_MULTIPLY, "fnmsc");
 }
 
 /*
@@ -966,20 +1135,20 @@ static u32 vfp_double_fnmsc(ARMul_State* state, int dd, int dn, int dm, u32 fpsc
  */
 static u32 vfp_double_fmul(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
 {
-	struct vfp_double vdd, vdn, vdm;
-	u32 exceptions;
+    struct vfp_double vdd, vdn, vdm;
+    u32 exceptions;
 
-	pr_debug("In %s\n", __FUNCTION__);
-	vfp_double_unpack(&vdn, vfp_get_double(state, dn));
-	if (vdn.exponent == 0 && vdn.significand)
-		vfp_double_normalise_denormal(&vdn);
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_double_unpack(&vdn, vfp_get_double(state, dn));
+    if (vdn.exponent == 0 && vdn.significand)
+        vfp_double_normalise_denormal(&vdn);
 
-	vfp_double_unpack(&vdm, vfp_get_double(state, dm));
-	if (vdm.exponent == 0 && vdm.significand)
-		vfp_double_normalise_denormal(&vdm);
+    vfp_double_unpack(&vdm, vfp_get_double(state, dm));
+    if (vdm.exponent == 0 && vdm.significand)
+        vfp_double_normalise_denormal(&vdm);
 
-	exceptions = vfp_double_multiply(&vdd, &vdn, &vdm, fpscr);
-	return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fmul");
+    exceptions = vfp_double_multiply(&vdd, &vdn, &vdm, fpscr);
+    return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fmul");
 }
 
 /*
@@ -987,22 +1156,22 @@ static u32 vfp_double_fmul(ARMul_State* state, int dd, int dn, int dm, u32 fpscr
  */
 static u32 vfp_double_fnmul(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
 {
-	struct vfp_double vdd, vdn, vdm;
-	u32 exceptions;
+    struct vfp_double vdd, vdn, vdm;
+    u32 exceptions;
 
-	pr_debug("In %s\n", __FUNCTION__);
-	vfp_double_unpack(&vdn, vfp_get_double(state, dn));
-	if (vdn.exponent == 0 && vdn.significand)
-		vfp_double_normalise_denormal(&vdn);
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_double_unpack(&vdn, vfp_get_double(state, dn));
+    if (vdn.exponent == 0 && vdn.significand)
+        vfp_double_normalise_denormal(&vdn);
 
-	vfp_double_unpack(&vdm, vfp_get_double(state, dm));
-	if (vdm.exponent == 0 && vdm.significand)
-		vfp_double_normalise_denormal(&vdm);
+    vfp_double_unpack(&vdm, vfp_get_double(state, dm));
+    if (vdm.exponent == 0 && vdm.significand)
+        vfp_double_normalise_denormal(&vdm);
 
-	exceptions = vfp_double_multiply(&vdd, &vdn, &vdm, fpscr);
-	vdd.sign = vfp_sign_negate(vdd.sign);
+    exceptions = vfp_double_multiply(&vdd, &vdn, &vdm, fpscr);
+    vdd.sign = vfp_sign_negate(vdd.sign);
 
-	return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fnmul");
+    return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fnmul");
 }
 
 /*
@@ -1010,21 +1179,21 @@ static u32 vfp_double_fnmul(ARMul_State* state, int dd, int dn, int dm, u32 fpsc
  */
 static u32 vfp_double_fadd(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
 {
-	struct vfp_double vdd, vdn, vdm;
-	u32 exceptions;
+    struct vfp_double vdd, vdn, vdm;
+    u32 exceptions;
 
-	pr_debug("In %s\n", __FUNCTION__);
-	vfp_double_unpack(&vdn, vfp_get_double(state, dn));
-	if (vdn.exponent == 0 && vdn.significand)
-		vfp_double_normalise_denormal(&vdn);
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_double_unpack(&vdn, vfp_get_double(state, dn));
+    if (vdn.exponent == 0 && vdn.significand)
+        vfp_double_normalise_denormal(&vdn);
 
-	vfp_double_unpack(&vdm, vfp_get_double(state, dm));
-	if (vdm.exponent == 0 && vdm.significand)
-		vfp_double_normalise_denormal(&vdm);
+    vfp_double_unpack(&vdm, vfp_get_double(state, dm));
+    if (vdm.exponent == 0 && vdm.significand)
+        vfp_double_normalise_denormal(&vdm);
 
-	exceptions = vfp_double_add(&vdd, &vdn, &vdm, fpscr);
+    exceptions = vfp_double_add(&vdd, &vdn, &vdm, fpscr);
 
-	return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fadd");
+    return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fadd");
 }
 
 /*
@@ -1032,26 +1201,26 @@ static u32 vfp_double_fadd(ARMul_State* state, int dd, int dn, int dm, u32 fpscr
  */
 static u32 vfp_double_fsub(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
 {
-	struct vfp_double vdd, vdn, vdm;
-	u32 exceptions;
+    struct vfp_double vdd, vdn, vdm;
+    u32 exceptions;
 
-	pr_debug("In %s\n", __FUNCTION__);
-	vfp_double_unpack(&vdn, vfp_get_double(state, dn));
-	if (vdn.exponent == 0 && vdn.significand)
-		vfp_double_normalise_denormal(&vdn);
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_double_unpack(&vdn, vfp_get_double(state, dn));
+    if (vdn.exponent == 0 && vdn.significand)
+        vfp_double_normalise_denormal(&vdn);
 
-	vfp_double_unpack(&vdm, vfp_get_double(state, dm));
-	if (vdm.exponent == 0 && vdm.significand)
-		vfp_double_normalise_denormal(&vdm);
+    vfp_double_unpack(&vdm, vfp_get_double(state, dm));
+    if (vdm.exponent == 0 && vdm.significand)
+        vfp_double_normalise_denormal(&vdm);
 
-	/*
-	 * Subtraction is like addition, but with a negated operand.
-	 */
-	vdm.sign = vfp_sign_negate(vdm.sign);
+    /*
+     * Subtraction is like addition, but with a negated operand.
+     */
+    vdm.sign = vfp_sign_negate(vdm.sign);
 
-	exceptions = vfp_double_add(&vdd, &vdn, &vdm, fpscr);
+    exceptions = vfp_double_add(&vdd, &vdn, &vdm, fpscr);
 
-	return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fsub");
+    return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fsub");
 }
 
 /*
@@ -1059,120 +1228,120 @@ static u32 vfp_double_fsub(ARMul_State* state, int dd, int dn, int dm, u32 fpscr
  */
 static u32 vfp_double_fdiv(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
 {
-	struct vfp_double vdd, vdn, vdm;
-	u32 exceptions = 0;
-	int tm, tn;
-
-	pr_debug("In %s\n", __FUNCTION__);
-	vfp_double_unpack(&vdn, vfp_get_double(state, dn));
-	vfp_double_unpack(&vdm, vfp_get_double(state, dm));
-
-	vdd.sign = vdn.sign ^ vdm.sign;
-
-	tn = vfp_double_type(&vdn);
-	tm = vfp_double_type(&vdm);
-
-	/*
-	 * Is n a NAN?
-	 */
-	if (tn & VFP_NAN)
-		goto vdn_nan;
-
-	/*
-	 * Is m a NAN?
-	 */
-	if (tm & VFP_NAN)
-		goto vdm_nan;
-
-	/*
-	 * If n and m are infinity, the result is invalid
-	 * If n and m are zero, the result is invalid
-	 */
-	if (tm & tn & (VFP_INFINITY|VFP_ZERO))
-		goto invalid;
-
-	/*
-	 * If n is infinity, the result is infinity
-	 */
-	if (tn & VFP_INFINITY)
-		goto infinity;
-
-	/*
-	 * If m is zero, raise div0 exceptions
-	 */
-	if (tm & VFP_ZERO)
-		goto divzero;
-
-	/*
-	 * If m is infinity, or n is zero, the result is zero
-	 */
-	if (tm & VFP_INFINITY || tn & VFP_ZERO)
-		goto zero;
-
-	if (tn & VFP_DENORMAL)
-		vfp_double_normalise_denormal(&vdn);
-	if (tm & VFP_DENORMAL)
-		vfp_double_normalise_denormal(&vdm);
-
-	/*
-	 * Ok, we have two numbers, we can perform division.
-	 */	
-	vdd.exponent = vdn.exponent - vdm.exponent + 1023 - 1;
-	vdm.significand <<= 1;
-	if (vdm.significand <= (2 * vdn.significand)) {
-		vdn.significand >>= 1;
-		vdd.exponent++;
-	}
-	vdd.significand = vfp_estimate_div128to64(vdn.significand, 0, vdm.significand);
-	if ((vdd.significand & 0x1ff) <= 2) {
-		u64 termh, terml, remh, reml;
-		mul64to128(&termh, &terml, vdm.significand, vdd.significand);
-		sub128(&remh, &reml, vdn.significand, 0, termh, terml);
-		while ((s64)remh < 0) {
-			vdd.significand -= 1;
-			add128(&remh, &reml, remh, reml, 0, vdm.significand);
-		}
-		vdd.significand |= (reml != 0);
-	}
-	return vfp_double_normaliseround(state, dd, &vdd, fpscr, 0, "fdiv");
-
- vdn_nan:
-	exceptions = vfp_propagate_nan(&vdd, &vdn, &vdm, fpscr);
- pack:
-	vfp_put_double(state, vfp_double_pack(&vdd), dd);
-	return exceptions;
-
- vdm_nan:
-	exceptions = vfp_propagate_nan(&vdd, &vdm, &vdn, fpscr);
-	goto pack;
-
- zero:
-	vdd.exponent = 0;
-	vdd.significand = 0;
-	goto pack;
-
- divzero:
-	exceptions = FPSCR_DZC;
- infinity:
-	vdd.exponent = 2047;
-	vdd.significand = 0;
-	goto pack;
-
- invalid:
-	vfp_put_double(state, vfp_double_pack(&vfp_double_default_qnan), dd);
-	return FPSCR_IOC;
+    struct vfp_double vdd, vdn, vdm;
+    u32 exceptions = 0;
+    int tm, tn;
+
+    pr_debug("In %s\n", __FUNCTION__);
+    vfp_double_unpack(&vdn, vfp_get_double(state, dn));
+    vfp_double_unpack(&vdm, vfp_get_double(state, dm));
+
+    vdd.sign = vdn.sign ^ vdm.sign;
+
+    tn = vfp_double_type(&vdn);
+    tm = vfp_double_type(&vdm);
+
+    /*
+     * Is n a NAN?
+     */
+    if (tn & VFP_NAN)
+        goto vdn_nan;
+
+    /*
+     * Is m a NAN?
+     */
+    if (tm & VFP_NAN)
+        goto vdm_nan;
+
+    /*
+     * If n and m are infinity, the result is invalid
+     * If n and m are zero, the result is invalid
+     */
+    if (tm & tn & (VFP_INFINITY|VFP_ZERO))
+        goto invalid;
+
+    /*
+     * If n is infinity, the result is infinity
+     */
+    if (tn & VFP_INFINITY)
+        goto infinity;
+
+    /*
+     * If m is zero, raise div0 exceptions
+     */
+    if (tm & VFP_ZERO)
+        goto divzero;
+
+    /*
+     * If m is infinity, or n is zero, the result is zero
+     */
+    if (tm & VFP_INFINITY || tn & VFP_ZERO)
+        goto zero;
+
+    if (tn & VFP_DENORMAL)
+        vfp_double_normalise_denormal(&vdn);
+    if (tm & VFP_DENORMAL)
+        vfp_double_normalise_denormal(&vdm);
+
+    /*
+     * Ok, we have two numbers, we can perform division.
+     */
+    vdd.exponent = vdn.exponent - vdm.exponent + 1023 - 1;
+    vdm.significand <<= 1;
+    if (vdm.significand <= (2 * vdn.significand)) {
+        vdn.significand >>= 1;
+        vdd.exponent++;
+    }
+    vdd.significand = vfp_estimate_div128to64(vdn.significand, 0, vdm.significand);
+    if ((vdd.significand & 0x1ff) <= 2) {
+        u64 termh, terml, remh, reml;
+        mul64to128(&termh, &terml, vdm.significand, vdd.significand);
+        sub128(&remh, &reml, vdn.significand, 0, termh, terml);
+        while ((s64)remh < 0) {
+            vdd.significand -= 1;
+            add128(&remh, &reml, remh, reml, 0, vdm.significand);
+        }
+        vdd.significand |= (reml != 0);
+    }
+    return vfp_double_normaliseround(state, dd, &vdd, fpscr, 0, "fdiv");
+
+vdn_nan:
+    exceptions = vfp_propagate_nan(&vdd, &vdn, &vdm, fpscr);
+pack:
+    vfp_put_double(state, vfp_double_pack(&vdd), dd);
+    return exceptions;
+
+vdm_nan:
+    exceptions = vfp_propagate_nan(&vdd, &vdm, &vdn, fpscr);
+    goto pack;
+
+zero:
+    vdd.exponent = 0;
+    vdd.significand = 0;
+    goto pack;
+
+divzero:
+    exceptions = FPSCR_DZC;
+infinity:
+    vdd.exponent = 2047;
+    vdd.significand = 0;
+    goto pack;
+
+invalid:
+    vfp_put_double(state, vfp_double_pack(&vfp_double_default_qnan), dd);
+    return FPSCR_IOC;
 }
 
 static struct op fops[] = {
-	{ vfp_double_fmac,  0 },
-	{ vfp_double_fmsc,  0 },
-	{ vfp_double_fmul,  0 },
-	{ vfp_double_fadd,  0 },
-	{ vfp_double_fnmac, 0 },
-	{ vfp_double_fnmsc, 0 },
-	{ vfp_double_fnmul, 0 },
-	{ vfp_double_fsub,  0 },
-	{ vfp_double_fdiv,  0 },
+    { vfp_double_fmac,  0 },
+    { vfp_double_fmsc,  0 },
+    { vfp_double_fmul,  0 },
+    { vfp_double_fadd,  0 },
+    { vfp_double_fnmac, 0 },
+    { vfp_double_fnmsc, 0 },
+    { vfp_double_fnmul, 0 },
+    { vfp_double_fsub,  0 },
+    { vfp_double_fdiv,  0 },
 };
 
 #define FREG_BANK(x)	((x) & 0x0c)
@@ -1180,84 +1349,84 @@ static struct op fops[] = {
 
 u32 vfp_double_cpdo(ARMul_State* state, u32 inst, u32 fpscr)
 {
-	u32 op = inst & FOP_MASK;
-	u32 exceptions = 0;
-	unsigned int dest;
-	unsigned int dn = vfp_get_dn(inst);
-	unsigned int dm;
-	unsigned int vecitr, veclen, vecstride;
-	struct op *fop;
-
-	pr_debug("In %s\n", __FUNCTION__);
-	vecstride = (1 + ((fpscr & FPSCR_STRIDE_MASK) == FPSCR_STRIDE_MASK));
-
-	fop = (op == FOP_EXT) ? &fops_ext[FEXT_TO_IDX(inst)] : &fops[FOP_TO_IDX(op)];
-
-	/*
-	 * fcvtds takes an sN register number as destination, not dN.
-	 * It also always operates on scalars.
-	 */
-	if (fop->flags & OP_SD)
-		dest = vfp_get_sd(inst);
-	else
-		dest = vfp_get_dd(inst);
-
-	/*
-	 * f[us]ito takes a sN operand, not a dN operand.
-	 */
-	if (fop->flags & OP_SM)
-		dm = vfp_get_sm(inst);
-	else
-		dm = vfp_get_dm(inst);
-
-	/*
-	 * If destination bank is zero, vector length is always '1'.
-	 * ARM DDI0100F C5.1.3, C5.3.2.
-	 */
-	if ((fop->flags & OP_SCALAR) || (FREG_BANK(dest) == 0))
-		veclen = 0;
-	else
-		veclen = fpscr & FPSCR_LENGTH_MASK;
-
-	pr_debug("VFP: vecstride=%u veclen=%u\n", vecstride,
-		 (veclen >> FPSCR_LENGTH_BIT) + 1);
-
-	if (!fop->fn) {
-		printf("VFP: could not find double op %d\n", FEXT_TO_IDX(inst));
-		goto invalid;
-	}
-
-	for (vecitr = 0; vecitr <= veclen; vecitr += 1 << FPSCR_LENGTH_BIT) {
-		u32 except;
-		char type;
-
-		type = fop->flags & OP_SD ? 's' : 'd';
-		if (op == FOP_EXT)
-			pr_debug("VFP: itr%d (%c%u) = op[%u] (d%u)\n",
-				 vecitr >> FPSCR_LENGTH_BIT,
-				 type, dest, dn, dm);
-		else
-			pr_debug("VFP: itr%d (%c%u) = (d%u) op[%u] (d%u)\n",
-				 vecitr >> FPSCR_LENGTH_BIT,
-				 type, dest, dn, FOP_TO_IDX(op), dm);
-
-		except = fop->fn(state, dest, dn, dm, fpscr);
-		pr_debug("VFP: itr%d: exceptions=%08x\n",
-			 vecitr >> FPSCR_LENGTH_BIT, except);
-
-		exceptions |= except;
-
-		/*
-		 * CHECK: It appears to be undefined whether we stop when
-		 * we encounter an exception.  We continue.
-		 */
-		dest = FREG_BANK(dest) + ((FREG_IDX(dest) + vecstride) & 3);
-		dn = FREG_BANK(dn) + ((FREG_IDX(dn) + vecstride) & 3);
-		if (FREG_BANK(dm) != 0)
-			dm = FREG_BANK(dm) + ((FREG_IDX(dm) + vecstride) & 3);
-	}
-	return exceptions;
-
- invalid:
-	return ~0;
+    u32 op = inst & FOP_MASK;
+    u32 exceptions = 0;
+    unsigned int dest;
+    unsigned int dn = vfp_get_dn(inst);
+    unsigned int dm;
+    unsigned int vecitr, veclen, vecstride;
+    struct op *fop;
+
+    pr_debug("In %s\n", __FUNCTION__);
+    vecstride = (1 + ((fpscr & FPSCR_STRIDE_MASK) == FPSCR_STRIDE_MASK));
+
+    fop = (op == FOP_EXT) ? &fops_ext[FEXT_TO_IDX(inst)] : &fops[FOP_TO_IDX(op)];
+
+    /*
+     * fcvtds takes an sN register number as destination, not dN.
+     * It also always operates on scalars.
+     */
+    if (fop->flags & OP_SD)
+        dest = vfp_get_sd(inst);
+    else
+        dest = vfp_get_dd(inst);
+
+    /*
+     * f[us]ito takes a sN operand, not a dN operand.
+     */
+    if (fop->flags & OP_SM)
+        dm = vfp_get_sm(inst);
+    else
+        dm = vfp_get_dm(inst);
+
+    /*
+     * If destination bank is zero, vector length is always '1'.
+     * ARM DDI0100F C5.1.3, C5.3.2.
+     */
+    if ((fop->flags & OP_SCALAR) || (FREG_BANK(dest) == 0))
+        veclen = 0;
+    else
+        veclen = fpscr & FPSCR_LENGTH_MASK;
+
+    pr_debug("VFP: vecstride=%u veclen=%u\n", vecstride,
+             (veclen >> FPSCR_LENGTH_BIT) + 1);
+
+    if (!fop->fn) {
+        printf("VFP: could not find double op %d\n", FEXT_TO_IDX(inst));
+        goto invalid;
+    }
+
+    for (vecitr = 0; vecitr <= veclen; vecitr += 1 << FPSCR_LENGTH_BIT) {
+        u32 except;
+        char type;
+
+        type = fop->flags & OP_SD ? 's' : 'd';
+        if (op == FOP_EXT)
+            pr_debug("VFP: itr%d (%c%u) = op[%u] (d%u)\n",
+                     vecitr >> FPSCR_LENGTH_BIT,
+                     type, dest, dn, dm);
+        else
+            pr_debug("VFP: itr%d (%c%u) = (d%u) op[%u] (d%u)\n",
+                     vecitr >> FPSCR_LENGTH_BIT,
+                     type, dest, dn, FOP_TO_IDX(op), dm);
+
+        except = fop->fn(state, dest, dn, dm, fpscr);
+        pr_debug("VFP: itr%d: exceptions=%08x\n",
+                 vecitr >> FPSCR_LENGTH_BIT, except);
+
+        exceptions |= except;
+
+        /*
+         * CHECK: It appears to be undefined whether we stop when
+         * we encounter an exception.  We continue.
+         */
+        dest = FREG_BANK(dest) + ((FREG_IDX(dest) + vecstride) & 3);
+        dn = FREG_BANK(dn) + ((FREG_IDX(dn) + vecstride) & 3);
+        if (FREG_BANK(dm) != 0)
+            dm = FREG_BANK(dm) + ((FREG_IDX(dm) + vecstride) & 3);
+    }
+    return exceptions;
+
+invalid:
+    return ~0;
 }