diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 101ed87..cd7a478 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -207,6 +207,11 @@
 #define INIT_SP_LIMIT \
 	(_ALIGN_UP(sizeof(init_thread_info), 16) + (unsigned long) &init_stack)
 
+#ifdef CONFIG_SPE
+#define SPEFSCR_INIT .spefscr = SPEFSCR_FINVE | SPEFSCR_FDBZE | SPEFSCR_FUNFE | SPEFSCR_FOVFE,
+#else
+#define SPEFSCR_INIT
+#endif
 
 #ifdef CONFIG_PPC32
 #define INIT_THREAD { \
@@ -215,6 +220,7 @@
 	.fs = KERNEL_DS, \
 	.pgdir = swapper_pg_dir, \
 	.fpexc_mode = MSR_FE0 | MSR_FE1, \
+	SPEFSCR_INIT \
 }
 #else
 #define INIT_THREAD  { \
diff --git a/arch/powerpc/include/asm/sfp-machine.h b/arch/powerpc/include/asm/sfp-machine.h
index 88af036..3d9f831 100644
--- a/arch/powerpc/include/asm/sfp-machine.h
+++ b/arch/powerpc/include/asm/sfp-machine.h
@@ -97,6 +97,20 @@
 
 #define _FP_KEEPNANFRACP 1
 
+#ifdef FP_EX_BOOKE_E500_SPE
+#define FP_EX_INEXACT		(1 << 21)
+#define FP_EX_INVALID		(1 << 20)
+#define FP_EX_DIVZERO		(1 << 19)
+#define FP_EX_UNDERFLOW		(1 << 18)
+#define FP_EX_OVERFLOW		(1 << 17)
+#define FP_INHIBIT_RESULTS	0
+
+#define __FPU_FPSCR	(current->thread.spefscr)
+#define __FPU_ENABLED_EXC		\
+({					\
+	(__FPU_FPSCR >> 2) & 0x1f;	\
+})
+#else
 /* Exception flags.  We use the bit positions of the appropriate bits
    in the FPSCR, which also correspond to the FE_* bits.  This makes
    everything easier ;-).  */
@@ -111,6 +125,18 @@
 #define FP_EX_DIVZERO         (1 << (31 - 5))
 #define FP_EX_INEXACT         (1 << (31 - 6))
 
+#define __FPU_FPSCR	(current->thread.fpscr.val)
+
+/* We only actually write to the destination register
+ * if exceptions signalled (if any) will not trap.
+ */
+#define __FPU_ENABLED_EXC \
+({						\
+	(__FPU_FPSCR >> 3) & 0x1f;	\
+})
+
+#endif
+
 /*
  * If one NaN is signaling and the other is not,
  * we choose that one, otherwise we choose X.
@@ -135,16 +161,6 @@
 #include <linux/kernel.h>
 #include <linux/sched.h>
 
-#define __FPU_FPSCR	(current->thread.fpscr.val)
-
-/* We only actually write to the destination register
- * if exceptions signalled (if any) will not trap.
- */
-#define __FPU_ENABLED_EXC \
-({						\
-	(__FPU_FPSCR >> 3) & 0x1f;	\
-})
-
 #define __FPU_TRAP_P(bits) \
 	((__FPU_ENABLED_EXC & (bits)) != 0)
 
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 590304c..837e3cc 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -685,12 +685,13 @@
 	/* SPE Floating Point Data */
 #ifdef CONFIG_SPE
 	EXCEPTION(0x2030, SPEFloatingPointData, SPEFloatingPointException, EXC_XFER_EE);
-#else
-	EXCEPTION(0x2040, SPEFloatingPointData, unknown_exception, EXC_XFER_EE)
-#endif /* CONFIG_SPE */
 
 	/* SPE Floating Point Round */
+	EXCEPTION(0x2050, SPEFloatingPointRound, SPEFloatingPointRoundException, EXC_XFER_EE)
+#else
+	EXCEPTION(0x2040, SPEFloatingPointData, unknown_exception, EXC_XFER_EE)
 	EXCEPTION(0x2050, SPEFloatingPointRound, unknown_exception, EXC_XFER_EE)
+#endif /* CONFIG_SPE */
 
 	/* Performance Monitor */
 	EXCEPTION(0x2060, PerformanceMonitor, performance_monitor_exception, EXC_XFER_STD)
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index f5def6c..5457e95 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -1160,37 +1160,85 @@
 #ifdef CONFIG_SPE
 void SPEFloatingPointException(struct pt_regs *regs)
 {
+	extern int do_spe_mathemu(struct pt_regs *regs);
 	unsigned long spefscr;
 	int fpexc_mode;
 	int code = 0;
+	int err;
+
+	preempt_disable();
+	if (regs->msr & MSR_SPE)
+		giveup_spe(current);
+	preempt_enable();
 
 	spefscr = current->thread.spefscr;
 	fpexc_mode = current->thread.fpexc_mode;
 
-	/* Hardware does not neccessarily set sticky
-	 * underflow/overflow/invalid flags */
 	if ((spefscr & SPEFSCR_FOVF) && (fpexc_mode & PR_FP_EXC_OVF)) {
 		code = FPE_FLTOVF;
-		spefscr |= SPEFSCR_FOVFS;
 	}
 	else if ((spefscr & SPEFSCR_FUNF) && (fpexc_mode & PR_FP_EXC_UND)) {
 		code = FPE_FLTUND;
-		spefscr |= SPEFSCR_FUNFS;
 	}
 	else if ((spefscr & SPEFSCR_FDBZ) && (fpexc_mode & PR_FP_EXC_DIV))
 		code = FPE_FLTDIV;
 	else if ((spefscr & SPEFSCR_FINV) && (fpexc_mode & PR_FP_EXC_INV)) {
 		code = FPE_FLTINV;
-		spefscr |= SPEFSCR_FINVS;
 	}
 	else if ((spefscr & (SPEFSCR_FG | SPEFSCR_FX)) && (fpexc_mode & PR_FP_EXC_RES))
 		code = FPE_FLTRES;
 
-	current->thread.spefscr = spefscr;
+	err = do_spe_mathemu(regs);
+	if (err == 0) {
+		regs->nip += 4;		/* skip emulated instruction */
+		emulate_single_step(regs);
+		return;
+	}
 
-	_exception(SIGFPE, regs, code, regs->nip);
+	if (err == -EFAULT) {
+		/* got an error reading the instruction */
+		_exception(SIGSEGV, regs, SEGV_ACCERR, regs->nip);
+	} else if (err == -EINVAL) {
+		/* didn't recognize the instruction */
+		printk(KERN_ERR "unrecognized spe instruction "
+		       "in %s at %lx\n", current->comm, regs->nip);
+	} else {
+		_exception(SIGFPE, regs, code, regs->nip);
+	}
+
 	return;
 }
+
+void SPEFloatingPointRoundException(struct pt_regs *regs)
+{
+	extern int speround_handler(struct pt_regs *regs);
+	int err;
+
+	preempt_disable();
+	if (regs->msr & MSR_SPE)
+		giveup_spe(current);
+	preempt_enable();
+
+	regs->nip -= 4;
+	err = speround_handler(regs);
+	if (err == 0) {
+		regs->nip += 4;		/* skip emulated instruction */
+		emulate_single_step(regs);
+		return;
+	}
+
+	if (err == -EFAULT) {
+		/* got an error reading the instruction */
+		_exception(SIGSEGV, regs, SEGV_ACCERR, regs->nip);
+	} else if (err == -EINVAL) {
+		/* didn't recognize the instruction */
+		printk(KERN_ERR "unrecognized spe instruction "
+		       "in %s at %lx\n", current->comm, regs->nip);
+	} else {
+		_exception(SIGFPE, regs, 0, regs->nip);
+		return;
+	}
+}
 #endif
 
 /*
diff --git a/arch/powerpc/math-emu/Makefile b/arch/powerpc/math-emu/Makefile
index 03aa98d..f9e506a 100644
--- a/arch/powerpc/math-emu/Makefile
+++ b/arch/powerpc/math-emu/Makefile
@@ -11,6 +11,8 @@
 					mcrfs.o mffs.o mtfsb0.o mtfsb1.o \
 					mtfsf.o mtfsfi.o stfiwx.o stfs.o
 
+obj-$(CONFIG_SPE)		+= math_efp.o
+
 CFLAGS_fabs.o = -fno-builtin-fabs
 CFLAGS_math.o = -fno-builtin-fabs
 
diff --git a/arch/powerpc/math-emu/math_efp.c b/arch/powerpc/math-emu/math_efp.c
new file mode 100644
index 0000000..41f4ef3
--- /dev/null
+++ b/arch/powerpc/math-emu/math_efp.c
@@ -0,0 +1,720 @@
+/*
+ * arch/powerpc/math-emu/math_efp.c
+ *
+ * Copyright (C) 2006-2008 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * Author: Ebony Zhu,	<ebony.zhu@freescale.com>
+ *         Yu Liu,	<yu.liu@freescale.com>
+ *
+ * Derived from arch/alpha/math-emu/math.c
+ *              arch/powerpc/math-emu/math.c
+ *
+ * Description:
+ * This file is the exception handler to make E500 SPE instructions
+ * fully comply with IEEE-754 floating point standard.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/types.h>
+
+#include <asm/uaccess.h>
+#include <asm/reg.h>
+
+#define FP_EX_BOOKE_E500_SPE
+#include <asm/sfp-machine.h>
+
+#include <math-emu/soft-fp.h>
+#include <math-emu/single.h>
+#include <math-emu/double.h>
+
+#define EFAPU		0x4
+
+#define VCT		0x4
+#define SPFP		0x6
+#define DPFP		0x7
+
+#define EFSADD		0x2c0
+#define EFSSUB		0x2c1
+#define EFSABS		0x2c4
+#define EFSNABS		0x2c5
+#define EFSNEG		0x2c6
+#define EFSMUL		0x2c8
+#define EFSDIV		0x2c9
+#define EFSCMPGT	0x2cc
+#define EFSCMPLT	0x2cd
+#define EFSCMPEQ	0x2ce
+#define EFSCFD		0x2cf
+#define EFSCFSI		0x2d1
+#define EFSCTUI		0x2d4
+#define EFSCTSI		0x2d5
+#define EFSCTUF		0x2d6
+#define EFSCTSF		0x2d7
+#define EFSCTUIZ	0x2d8
+#define EFSCTSIZ	0x2da
+
+#define EVFSADD		0x280
+#define EVFSSUB		0x281
+#define EVFSABS		0x284
+#define EVFSNABS	0x285
+#define EVFSNEG		0x286
+#define EVFSMUL		0x288
+#define EVFSDIV		0x289
+#define EVFSCMPGT	0x28c
+#define EVFSCMPLT	0x28d
+#define EVFSCMPEQ	0x28e
+#define EVFSCTUI	0x294
+#define EVFSCTSI	0x295
+#define EVFSCTUF	0x296
+#define EVFSCTSF	0x297
+#define EVFSCTUIZ	0x298
+#define EVFSCTSIZ	0x29a
+
+#define EFDADD		0x2e0
+#define EFDSUB		0x2e1
+#define EFDABS		0x2e4
+#define EFDNABS		0x2e5
+#define EFDNEG		0x2e6
+#define EFDMUL		0x2e8
+#define EFDDIV		0x2e9
+#define EFDCTUIDZ	0x2ea
+#define EFDCTSIDZ	0x2eb
+#define EFDCMPGT	0x2ec
+#define EFDCMPLT	0x2ed
+#define EFDCMPEQ	0x2ee
+#define EFDCFS		0x2ef
+#define EFDCTUI		0x2f4
+#define EFDCTSI		0x2f5
+#define EFDCTUF		0x2f6
+#define EFDCTSF		0x2f7
+#define EFDCTUIZ	0x2f8
+#define EFDCTSIZ	0x2fa
+
+#define AB	2
+#define XA	3
+#define XB	4
+#define XCR	5
+#define NOTYPE	0
+
+#define SIGN_BIT_S	(1UL << 31)
+#define SIGN_BIT_D	(1ULL << 63)
+#define FP_EX_MASK	(FP_EX_INEXACT | FP_EX_INVALID | FP_EX_DIVZERO | \
+			FP_EX_UNDERFLOW | FP_EX_OVERFLOW)
+
+union dw_union {
+	u64 dp[1];
+	u32 wp[2];
+};
+
+static unsigned long insn_type(unsigned long speinsn)
+{
+	unsigned long ret = NOTYPE;
+
+	switch (speinsn & 0x7ff) {
+	case EFSABS:	ret = XA;	break;
+	case EFSADD:	ret = AB;	break;
+	case EFSCFD:	ret = XB;	break;
+	case EFSCMPEQ:	ret = XCR;	break;
+	case EFSCMPGT:	ret = XCR;	break;
+	case EFSCMPLT:	ret = XCR;	break;
+	case EFSCTSF:	ret = XB;	break;
+	case EFSCTSI:	ret = XB;	break;
+	case EFSCTSIZ:	ret = XB;	break;
+	case EFSCTUF:	ret = XB;	break;
+	case EFSCTUI:	ret = XB;	break;
+	case EFSCTUIZ:	ret = XB;	break;
+	case EFSDIV:	ret = AB;	break;
+	case EFSMUL:	ret = AB;	break;
+	case EFSNABS:	ret = XA;	break;
+	case EFSNEG:	ret = XA;	break;
+	case EFSSUB:	ret = AB;	break;
+	case EFSCFSI:	ret = XB;	break;
+
+	case EVFSABS:	ret = XA;	break;
+	case EVFSADD:	ret = AB;	break;
+	case EVFSCMPEQ:	ret = XCR;	break;
+	case EVFSCMPGT:	ret = XCR;	break;
+	case EVFSCMPLT:	ret = XCR;	break;
+	case EVFSCTSF:	ret = XB;	break;
+	case EVFSCTSI:	ret = XB;	break;
+	case EVFSCTSIZ:	ret = XB;	break;
+	case EVFSCTUF:	ret = XB;	break;
+	case EVFSCTUI:	ret = XB;	break;
+	case EVFSCTUIZ:	ret = XB;	break;
+	case EVFSDIV:	ret = AB;	break;
+	case EVFSMUL:	ret = AB;	break;
+	case EVFSNABS:	ret = XA;	break;
+	case EVFSNEG:	ret = XA;	break;
+	case EVFSSUB:	ret = AB;	break;
+
+	case EFDABS:	ret = XA;	break;
+	case EFDADD:	ret = AB;	break;
+	case EFDCFS:	ret = XB;	break;
+	case EFDCMPEQ:	ret = XCR;	break;
+	case EFDCMPGT:	ret = XCR;	break;
+	case EFDCMPLT:	ret = XCR;	break;
+	case EFDCTSF:	ret = XB;	break;
+	case EFDCTSI:	ret = XB;	break;
+	case EFDCTSIDZ:	ret = XB;	break;
+	case EFDCTSIZ:	ret = XB;	break;
+	case EFDCTUF:	ret = XB;	break;
+	case EFDCTUI:	ret = XB;	break;
+	case EFDCTUIDZ:	ret = XB;	break;
+	case EFDCTUIZ:	ret = XB;	break;
+	case EFDDIV:	ret = AB;	break;
+	case EFDMUL:	ret = AB;	break;
+	case EFDNABS:	ret = XA;	break;
+	case EFDNEG:	ret = XA;	break;
+	case EFDSUB:	ret = AB;	break;
+
+	default:
+		printk(KERN_ERR "\nOoops! SPE instruction no type found.");
+		printk(KERN_ERR "\ninst code: %08lx\n", speinsn);
+	}
+
+	return ret;
+}
+
+int do_spe_mathemu(struct pt_regs *regs)
+{
+	FP_DECL_EX;
+	int IR, cmp;
+
+	unsigned long type, func, fc, fa, fb, src, speinsn;
+	union dw_union vc, va, vb;
+
+	if (get_user(speinsn, (unsigned int __user *) regs->nip))
+		return -EFAULT;
+	if ((speinsn >> 26) != EFAPU)
+		return -EINVAL;         /* not an spe instruction */
+
+	type = insn_type(speinsn);
+	if (type == NOTYPE)
+		return -ENOSYS;
+
+	func = speinsn & 0x7ff;
+	fc = (speinsn >> 21) & 0x1f;
+	fa = (speinsn >> 16) & 0x1f;
+	fb = (speinsn >> 11) & 0x1f;
+	src = (speinsn >> 5) & 0x7;
+
+	vc.wp[0] = current->thread.evr[fc];
+	vc.wp[1] = regs->gpr[fc];
+	va.wp[0] = current->thread.evr[fa];
+	va.wp[1] = regs->gpr[fa];
+	vb.wp[0] = current->thread.evr[fb];
+	vb.wp[1] = regs->gpr[fb];
+
+	__FPU_FPSCR = mfspr(SPRN_SPEFSCR);
+
+#ifdef DEBUG
+	printk("speinsn:%08lx spefscr:%08lx\n", speinsn, __FPU_FPSCR);
+	printk("vc: %08x  %08x\n", vc.wp[0], vc.wp[1]);
+	printk("va: %08x  %08x\n", va.wp[0], va.wp[1]);
+	printk("vb: %08x  %08x\n", vb.wp[0], vb.wp[1]);
+#endif
+
+	switch (src) {
+	case SPFP: {
+		FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
+
+		switch (type) {
+		case AB:
+		case XCR:
+			FP_UNPACK_SP(SA, va.wp + 1);
+		case XB:
+			FP_UNPACK_SP(SB, vb.wp + 1);
+			break;
+		case XA:
+			FP_UNPACK_SP(SA, va.wp + 1);
+			break;
+		}
+
+#ifdef DEBUG
+		printk("SA: %ld %08lx %ld (%ld)\n", SA_s, SA_f, SA_e, SA_c);
+		printk("SB: %ld %08lx %ld (%ld)\n", SB_s, SB_f, SB_e, SB_c);
+#endif
+
+		switch (func) {
+		case EFSABS:
+			vc.wp[1] = va.wp[1] & ~SIGN_BIT_S;
+			goto update_regs;
+
+		case EFSNABS:
+			vc.wp[1] = va.wp[1] | SIGN_BIT_S;
+			goto update_regs;
+
+		case EFSNEG:
+			vc.wp[1] = va.wp[1] ^ SIGN_BIT_S;
+			goto update_regs;
+
+		case EFSADD:
+			FP_ADD_S(SR, SA, SB);
+			goto pack_s;
+
+		case EFSSUB:
+			FP_SUB_S(SR, SA, SB);
+			goto pack_s;
+
+		case EFSMUL:
+			FP_MUL_S(SR, SA, SB);
+			goto pack_s;
+
+		case EFSDIV:
+			FP_DIV_S(SR, SA, SB);
+			goto pack_s;
+
+		case EFSCMPEQ:
+			cmp = 0;
+			goto cmp_s;
+
+		case EFSCMPGT:
+			cmp = 1;
+			goto cmp_s;
+
+		case EFSCMPLT:
+			cmp = -1;
+			goto cmp_s;
+
+		case EFSCTSF:
+		case EFSCTUF:
+			if (!((vb.wp[1] >> 23) == 0xff && ((vb.wp[1] & 0x7fffff) > 0))) {
+				/* NaN */
+				if (((vb.wp[1] >> 23) & 0xff) == 0) {
+					/* denorm */
+					vc.wp[1] = 0x0;
+				} else if ((vb.wp[1] >> 31) == 0) {
+					/* positive normal */
+					vc.wp[1] = (func == EFSCTSF) ?
+						0x7fffffff : 0xffffffff;
+				} else { /* negative normal */
+					vc.wp[1] = (func == EFSCTSF) ?
+						0x80000000 : 0x0;
+				}
+			} else { /* rB is NaN */
+				vc.wp[1] = 0x0;
+			}
+			goto update_regs;
+
+		case EFSCFD: {
+			FP_DECL_D(DB);
+			FP_CLEAR_EXCEPTIONS;
+			FP_UNPACK_DP(DB, vb.dp);
+#ifdef DEBUG
+			printk("DB: %ld %08lx %08lx %ld (%ld)\n",
+					DB_s, DB_f1, DB_f0, DB_e, DB_c);
+#endif
+			FP_CONV(S, D, 1, 2, SR, DB);
+			goto pack_s;
+		}
+
+		case EFSCTSI:
+		case EFSCTSIZ:
+		case EFSCTUI:
+		case EFSCTUIZ:
+			if (func & 0x4) {
+				_FP_ROUND(1, SB);
+			} else {
+				_FP_ROUND_ZERO(1, SB);
+			}
+			FP_TO_INT_S(vc.wp[1], SB, 32, ((func & 0x3) != 0));
+			goto update_regs;
+
+		default:
+			goto illegal;
+		}
+		break;
+
+pack_s:
+#ifdef DEBUG
+		printk("SR: %ld %08lx %ld (%ld)\n", SR_s, SR_f, SR_e, SR_c);
+#endif
+		FP_PACK_SP(vc.wp + 1, SR);
+		goto update_regs;
+
+cmp_s:
+		FP_CMP_S(IR, SA, SB, 3);
+		if (IR == 3 && (FP_ISSIGNAN_S(SA) || FP_ISSIGNAN_S(SB)))
+			FP_SET_EXCEPTION(FP_EX_INVALID);
+		if (IR == cmp) {
+			IR = 0x4;
+		} else {
+			IR = 0;
+		}
+		goto update_ccr;
+	}
+
+	case DPFP: {
+		FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
+
+		switch (type) {
+		case AB:
+		case XCR:
+			FP_UNPACK_DP(DA, va.dp);
+		case XB:
+			FP_UNPACK_DP(DB, vb.dp);
+			break;
+		case XA:
+			FP_UNPACK_DP(DA, va.dp);
+			break;
+		}
+
+#ifdef DEBUG
+		printk("DA: %ld %08lx %08lx %ld (%ld)\n",
+				DA_s, DA_f1, DA_f0, DA_e, DA_c);
+		printk("DB: %ld %08lx %08lx %ld (%ld)\n",
+				DB_s, DB_f1, DB_f0, DB_e, DB_c);
+#endif
+
+		switch (func) {
+		case EFDABS:
+			vc.dp[0] = va.dp[0] & ~SIGN_BIT_D;
+			goto update_regs;
+
+		case EFDNABS:
+			vc.dp[0] = va.dp[0] | SIGN_BIT_D;
+			goto update_regs;
+
+		case EFDNEG:
+			vc.dp[0] = va.dp[0] ^ SIGN_BIT_D;
+			goto update_regs;
+
+		case EFDADD:
+			FP_ADD_D(DR, DA, DB);
+			goto pack_d;
+
+		case EFDSUB:
+			FP_SUB_D(DR, DA, DB);
+			goto pack_d;
+
+		case EFDMUL:
+			FP_MUL_D(DR, DA, DB);
+			goto pack_d;
+
+		case EFDDIV:
+			FP_DIV_D(DR, DA, DB);
+			goto pack_d;
+
+		case EFDCMPEQ:
+			cmp = 0;
+			goto cmp_d;
+
+		case EFDCMPGT:
+			cmp = 1;
+			goto cmp_d;
+
+		case EFDCMPLT:
+			cmp = -1;
+			goto cmp_d;
+
+		case EFDCTSF:
+		case EFDCTUF:
+			if (!((vb.wp[0] >> 20) == 0x7ff &&
+			   ((vb.wp[0] & 0xfffff) > 0 || (vb.wp[1] > 0)))) {
+				/* not a NaN */
+				if (((vb.wp[0] >> 20) & 0x7ff) == 0) {
+					/* denorm */
+					vc.wp[1] = 0x0;
+				} else if ((vb.wp[0] >> 31) == 0) {
+					/* positive normal */
+					vc.wp[1] = (func == EFDCTSF) ?
+						0x7fffffff : 0xffffffff;
+				} else { /* negative normal */
+					vc.wp[1] = (func == EFDCTSF) ?
+						0x80000000 : 0x0;
+				}
+			} else { /* NaN */
+				vc.wp[1] = 0x0;
+			}
+			goto update_regs;
+
+		case EFDCFS: {
+			FP_DECL_S(SB);
+			FP_CLEAR_EXCEPTIONS;
+			FP_UNPACK_SP(SB, vb.wp + 1);
+#ifdef DEBUG
+			printk("SB: %ld %08lx %ld (%ld)\n",
+					SB_s, SB_f, SB_e, SB_c);
+#endif
+			FP_CONV(D, S, 2, 1, DR, SB);
+			goto pack_d;
+		}
+
+		case EFDCTUIDZ:
+		case EFDCTSIDZ:
+			_FP_ROUND_ZERO(2, DB);
+			FP_TO_INT_D(vc.dp[0], DB, 64, ((func & 0x1) == 0));
+			goto update_regs;
+
+		case EFDCTUI:
+		case EFDCTSI:
+		case EFDCTUIZ:
+		case EFDCTSIZ:
+			if (func & 0x4) {
+				_FP_ROUND(2, DB);
+			} else {
+				_FP_ROUND_ZERO(2, DB);
+			}
+			FP_TO_INT_D(vc.wp[1], DB, 32, ((func & 0x3) != 0));
+			goto update_regs;
+
+		default:
+			goto illegal;
+		}
+		break;
+
+pack_d:
+#ifdef DEBUG
+		printk("DR: %ld %08lx %08lx %ld (%ld)\n",
+				DR_s, DR_f1, DR_f0, DR_e, DR_c);
+#endif
+		FP_PACK_DP(vc.dp, DR);
+		goto update_regs;
+
+cmp_d:
+		FP_CMP_D(IR, DA, DB, 3);
+		if (IR == 3 && (FP_ISSIGNAN_D(DA) || FP_ISSIGNAN_D(DB)))
+			FP_SET_EXCEPTION(FP_EX_INVALID);
+		if (IR == cmp) {
+			IR = 0x4;
+		} else {
+			IR = 0;
+		}
+		goto update_ccr;
+
+	}
+
+	case VCT: {
+		FP_DECL_S(SA0); FP_DECL_S(SB0); FP_DECL_S(SR0);
+		FP_DECL_S(SA1); FP_DECL_S(SB1); FP_DECL_S(SR1);
+		int IR0, IR1;
+
+		switch (type) {
+		case AB:
+		case XCR:
+			FP_UNPACK_SP(SA0, va.wp);
+			FP_UNPACK_SP(SA1, va.wp + 1);
+		case XB:
+			FP_UNPACK_SP(SB0, vb.wp);
+			FP_UNPACK_SP(SB1, vb.wp + 1);
+			break;
+		case XA:
+			FP_UNPACK_SP(SA0, va.wp);
+			FP_UNPACK_SP(SA1, va.wp + 1);
+			break;
+		}
+
+#ifdef DEBUG
+		printk("SA0: %ld %08lx %ld (%ld)\n", SA0_s, SA0_f, SA0_e, SA0_c);
+		printk("SA1: %ld %08lx %ld (%ld)\n", SA1_s, SA1_f, SA1_e, SA1_c);
+		printk("SB0: %ld %08lx %ld (%ld)\n", SB0_s, SB0_f, SB0_e, SB0_c);
+		printk("SB1: %ld %08lx %ld (%ld)\n", SB1_s, SB1_f, SB1_e, SB1_c);
+#endif
+
+		switch (func) {
+		case EVFSABS:
+			vc.wp[0] = va.wp[0] & ~SIGN_BIT_S;
+			vc.wp[1] = va.wp[1] & ~SIGN_BIT_S;
+			goto update_regs;
+
+		case EVFSNABS:
+			vc.wp[0] = va.wp[0] | SIGN_BIT_S;
+			vc.wp[1] = va.wp[1] | SIGN_BIT_S;
+			goto update_regs;
+
+		case EVFSNEG:
+			vc.wp[0] = va.wp[0] ^ SIGN_BIT_S;
+			vc.wp[1] = va.wp[1] ^ SIGN_BIT_S;
+			goto update_regs;
+
+		case EVFSADD:
+			FP_ADD_S(SR0, SA0, SB0);
+			FP_ADD_S(SR1, SA1, SB1);
+			goto pack_vs;
+
+		case EVFSSUB:
+			FP_SUB_S(SR0, SA0, SB0);
+			FP_SUB_S(SR1, SA1, SB1);
+			goto pack_vs;
+
+		case EVFSMUL:
+			FP_MUL_S(SR0, SA0, SB0);
+			FP_MUL_S(SR1, SA1, SB1);
+			goto pack_vs;
+
+		case EVFSDIV:
+			FP_DIV_S(SR0, SA0, SB0);
+			FP_DIV_S(SR1, SA1, SB1);
+			goto pack_vs;
+
+		case EVFSCMPEQ:
+			cmp = 0;
+			goto cmp_vs;
+
+		case EVFSCMPGT:
+			cmp = 1;
+			goto cmp_vs;
+
+		case EVFSCMPLT:
+			cmp = -1;
+			goto cmp_vs;
+
+		case EVFSCTSF:
+			__asm__ __volatile__ ("mtspr 512, %4\n"
+				"efsctsf %0, %2\n"
+				"efsctsf %1, %3\n"
+				: "=r" (vc.wp[0]), "=r" (vc.wp[1])
+				: "r" (vb.wp[0]), "r" (vb.wp[1]), "r" (0));
+			goto update_regs;
+
+		case EVFSCTUF:
+			__asm__ __volatile__ ("mtspr 512, %4\n"
+				"efsctuf %0, %2\n"
+				"efsctuf %1, %3\n"
+				: "=r" (vc.wp[0]), "=r" (vc.wp[1])
+				: "r" (vb.wp[0]), "r" (vb.wp[1]), "r" (0));
+			goto update_regs;
+
+		case EVFSCTUI:
+		case EVFSCTSI:
+		case EVFSCTUIZ:
+		case EVFSCTSIZ:
+			if (func & 0x4) {
+				_FP_ROUND(1, SB0);
+				_FP_ROUND(1, SB1);
+			} else {
+				_FP_ROUND_ZERO(1, SB0);
+				_FP_ROUND_ZERO(1, SB1);
+			}
+			FP_TO_INT_S(vc.wp[0], SB0, 32, ((func & 0x3) != 0));
+			FP_TO_INT_S(vc.wp[1], SB1, 32, ((func & 0x3) != 0));
+			goto update_regs;
+
+		default:
+			goto illegal;
+		}
+		break;
+
+pack_vs:
+#ifdef DEBUG
+		printk("SR0: %ld %08lx %ld (%ld)\n", SR0_s, SR0_f, SR0_e, SR0_c);
+		printk("SR1: %ld %08lx %ld (%ld)\n", SR1_s, SR1_f, SR1_e, SR1_c);
+#endif
+		FP_PACK_SP(vc.wp, SR0);
+		FP_PACK_SP(vc.wp + 1, SR1);
+		goto update_regs;
+
+cmp_vs:
+		{
+			int ch, cl;
+
+			FP_CMP_S(IR0, SA0, SB0, 3);
+			FP_CMP_S(IR1, SA1, SB1, 3);
+			if (IR0 == 3 && (FP_ISSIGNAN_S(SA0) || FP_ISSIGNAN_S(SB0)))
+				FP_SET_EXCEPTION(FP_EX_INVALID);
+			if (IR1 == 3 && (FP_ISSIGNAN_S(SA1) || FP_ISSIGNAN_S(SB1)))
+				FP_SET_EXCEPTION(FP_EX_INVALID);
+			ch = (IR0 == cmp) ? 1 : 0;
+			cl = (IR1 == cmp) ? 1 : 0;
+			IR = (ch << 3) | (cl << 2) | ((ch | cl) << 1) |
+				((ch & cl) << 0);
+			goto update_ccr;
+		}
+	}
+	default:
+		return -EINVAL;
+	}
+
+update_ccr:
+	regs->ccr &= ~(15 << ((7 - ((speinsn >> 23) & 0x7)) << 2));
+	regs->ccr |= (IR << ((7 - ((speinsn >> 23) & 0x7)) << 2));
+
+update_regs:
+	__FPU_FPSCR &= ~FP_EX_MASK;
+	__FPU_FPSCR |= (FP_CUR_EXCEPTIONS & FP_EX_MASK);
+	mtspr(SPRN_SPEFSCR, __FPU_FPSCR);
+
+	current->thread.evr[fc] = vc.wp[0];
+	regs->gpr[fc] = vc.wp[1];
+
+#ifdef DEBUG
+	printk("ccr = %08lx\n", regs->ccr);
+	printk("cur exceptions = %08x spefscr = %08lx\n",
+			FP_CUR_EXCEPTIONS, __FPU_FPSCR);
+	printk("vc: %08x  %08x\n", vc.wp[0], vc.wp[1]);
+	printk("va: %08x  %08x\n", va.wp[0], va.wp[1]);
+	printk("vb: %08x  %08x\n", vb.wp[0], vb.wp[1]);
+#endif
+
+	return 0;
+
+illegal:
+	printk(KERN_ERR "\nOoops! IEEE-754 compliance handler encountered un-supported instruction.\ninst code: %08lx\n", speinsn);
+	return -ENOSYS;
+}
+
+int speround_handler(struct pt_regs *regs)
+{
+	union dw_union fgpr;
+	int s_lo, s_hi;
+	unsigned long speinsn, type, fc;
+
+	if (get_user(speinsn, (unsigned int __user *) regs->nip))
+		return -EFAULT;
+	if ((speinsn >> 26) != 4)
+		return -EINVAL;         /* not an spe instruction */
+
+	type = insn_type(speinsn & 0x7ff);
+	if (type == XCR) return -ENOSYS;
+
+	fc = (speinsn >> 21) & 0x1f;
+	s_lo = regs->gpr[fc] & SIGN_BIT_S;
+	s_hi = current->thread.evr[fc] & SIGN_BIT_S;
+	fgpr.wp[0] = current->thread.evr[fc];
+	fgpr.wp[1] = regs->gpr[fc];
+
+	__FPU_FPSCR = mfspr(SPRN_SPEFSCR);
+
+	switch ((speinsn >> 5) & 0x7) {
+	/* Since SPE instructions on E500 core can handle round to nearest
+	 * and round toward zero with IEEE-754 complied, we just need
+	 * to handle round toward +Inf and round toward -Inf by software.
+	 */
+	case SPFP:
+		if ((FP_ROUNDMODE) == FP_RND_PINF) {
+			if (!s_lo) fgpr.wp[1]++; /* Z > 0, choose Z1 */
+		} else { /* round to -Inf */
+			if (s_lo) fgpr.wp[1]++; /* Z < 0, choose Z2 */
+		}
+		break;
+
+	case DPFP:
+		if (FP_ROUNDMODE == FP_RND_PINF) {
+			if (!s_hi) fgpr.dp[0]++; /* Z > 0, choose Z1 */
+		} else { /* round to -Inf */
+			if (s_hi) fgpr.dp[0]++; /* Z < 0, choose Z2 */
+		}
+		break;
+
+	case VCT:
+		if (FP_ROUNDMODE == FP_RND_PINF) {
+			if (!s_lo) fgpr.wp[1]++; /* Z_low > 0, choose Z1 */
+			if (!s_hi) fgpr.wp[0]++; /* Z_high word > 0, choose Z1 */
+		} else { /* round to -Inf */
+			if (s_lo) fgpr.wp[1]++; /* Z_low < 0, choose Z2 */
+			if (s_hi) fgpr.wp[0]++; /* Z_high < 0, choose Z2 */
+		}
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	current->thread.evr[fc] = fgpr.wp[0];
+	regs->gpr[fc] = fgpr.wp[1];
+
+	return 0;
+}