MIPS: math-emu: Cleanup coding style.

 o Only define variables in the outermost block
 o One empty line at most
 o Format comments as per CodingStyle
 o Update FSF address in licensing term comment
 o Spell FPU and MIPS in all capitals.
 o Remove ####-type of lines in comments.
 o Try to make things a bit most consistent between sp_*.c / dp_*.c files.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/math-emu/cp1emu.c

@@ -1,5 +1,5 @@
 /*
- * cp1emu.c: a MIPS coprocessor 1 (fpu) instruction emulator
+ * cp1emu.c: a MIPS coprocessor 1 (FPU) instruction emulator
  *
  * MIPS floating point support
  * Copyright (C) 1994-2000 Algorithmics Ltd.
@@ -18,19 +18,19 @@
  *
  *  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.
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  *
  * A complete emulator for MIPS coprocessor 1 instructions.  This is
  * required for #float(switch) or #float(trap), where it catches all
  * COP1 instructions via the "CoProcessor Unusable" exception.
  *
  * More surprisingly it is also required for #float(ieee), to help out
- * the hardware fpu at the boundaries of the IEEE-754 representation
+ * the hardware FPU at the boundaries of the IEEE-754 representation
  * (denormalised values, infinities, underflow, etc).  It is made
  * quite nasty because emulation of some non-COP1 instructions is
  * required, e.g. in branch delay slots.
  *
- * Note if you know that you won't have an fpu, then you'll get much
+ * Note if you know that you won't have an FPU, then you'll get much
  * better performance by compiling with -msoft-float!
  */
 #include <linux/sched.h>
@@ -72,14 +72,14 @@ static int fpux_emu(struct pt_regs *,
 #define MM_POOL32A_MINOR_SHIFT	0x6
 #define MM_MIPS32_COND_FC	0x30
 
-/* Convert Mips rounding mode (0..3) to IEEE library modes. */
+/* Convert MIPS rounding mode (0..3) to IEEE library modes. */
 static const unsigned char ieee_rm[4] = {
 	[FPU_CSR_RN] = IEEE754_RN,
 	[FPU_CSR_RZ] = IEEE754_RZ,
 	[FPU_CSR_RU] = IEEE754_RU,
 	[FPU_CSR_RD] = IEEE754_RD,
 };
-/* Convert IEEE library modes to Mips rounding mode (0..3). */
+/* Convert IEEE library modes to MIPS rounding mode (0..3). */
 static const unsigned char mips_rm[4] = {
 	[IEEE754_RN] = FPU_CSR_RN,
 	[IEEE754_RZ] = FPU_CSR_RZ,
@@ -914,10 +914,16 @@ do {									\
 static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 		struct mm_decoded_insn dec_insn, void *__user *fault_addr)
 {
-	mips_instruction ir;
 	unsigned long contpc = xcp->cp0_epc + dec_insn.pc_inc;
-	unsigned int cond;
-	int pc_inc;
+	unsigned int cond, cbit;
+	mips_instruction ir;
+	int likely, pc_inc;
+	u32 __user *wva;
+	u64 __user *dva;
+	u32 value;
+	u32 wval;
+	u64 dval;
+	int sig;
 
 	/* XXX NEC Vr54xx bug workaround */
 	if (delay_slot(xcp)) {
@@ -972,94 +978,81 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 			return SIGILL;
 	}
 
-      emul:
+emul:
 	perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, xcp, 0);
 	MIPS_FPU_EMU_INC_STATS(emulated);
 	switch (MIPSInst_OPCODE(ir)) {
-	case ldc1_op:{
-		u64 __user *va = (u64 __user *) (xcp->regs[MIPSInst_RS(ir)] +
-			MIPSInst_SIMM(ir));
-		u64 val;
-
+	case ldc1_op:
+		dva = (u64 __user *) (xcp->regs[MIPSInst_RS(ir)] +
+				     MIPSInst_SIMM(ir));
 		MIPS_FPU_EMU_INC_STATS(loads);
 
-		if (!access_ok(VERIFY_READ, va, sizeof(u64))) {
+		if (!access_ok(VERIFY_READ, dva, sizeof(u64))) {
 			MIPS_FPU_EMU_INC_STATS(errors);
-			*fault_addr = va;
+			*fault_addr = dva;
 			return SIGBUS;
 		}
-		if (__get_user(val, va)) {
+		if (__get_user(dval, dva)) {
 			MIPS_FPU_EMU_INC_STATS(errors);
-			*fault_addr = va;
+			*fault_addr = dva;
 			return SIGSEGV;
 		}
-		DITOREG(val, MIPSInst_RT(ir));
+		DITOREG(dval, MIPSInst_RT(ir));
 		break;
-	}
-
-	case sdc1_op:{
-		u64 __user *va = (u64 __user *) (xcp->regs[MIPSInst_RS(ir)] +
-			MIPSInst_SIMM(ir));
-		u64 val;
 
+	case sdc1_op:
+		dva = (u64 __user *) (xcp->regs[MIPSInst_RS(ir)] +
+				      MIPSInst_SIMM(ir));
 		MIPS_FPU_EMU_INC_STATS(stores);
-		DIFROMREG(val, MIPSInst_RT(ir));
-		if (!access_ok(VERIFY_WRITE, va, sizeof(u64))) {
+		DIFROMREG(dval, MIPSInst_RT(ir));
+		if (!access_ok(VERIFY_WRITE, dva, sizeof(u64))) {
 			MIPS_FPU_EMU_INC_STATS(errors);
-			*fault_addr = va;
+			*fault_addr = dva;
 			return SIGBUS;
 		}
-		if (__put_user(val, va)) {
+		if (__put_user(dval, dva)) {
 			MIPS_FPU_EMU_INC_STATS(errors);
-			*fault_addr = va;
+			*fault_addr = dva;
 			return SIGSEGV;
 		}
 		break;
-	}
-
-	case lwc1_op:{
-		u32 __user *va = (u32 __user *) (xcp->regs[MIPSInst_RS(ir)] +
-			MIPSInst_SIMM(ir));
-		u32 val;
 
+	case lwc1_op:
+		wva = (u32 __user *) (xcp->regs[MIPSInst_RS(ir)] +
+				      MIPSInst_SIMM(ir));
 		MIPS_FPU_EMU_INC_STATS(loads);
-		if (!access_ok(VERIFY_READ, va, sizeof(u32))) {
+		if (!access_ok(VERIFY_READ, wva, sizeof(u32))) {
 			MIPS_FPU_EMU_INC_STATS(errors);
-			*fault_addr = va;
+			*fault_addr = wva;
 			return SIGBUS;
 		}
-		if (__get_user(val, va)) {
+		if (__get_user(wval, wva)) {
 			MIPS_FPU_EMU_INC_STATS(errors);
-			*fault_addr = va;
+			*fault_addr = wva;
 			return SIGSEGV;
 		}
-		SITOREG(val, MIPSInst_RT(ir));
+		SITOREG(wval, MIPSInst_RT(ir));
 		break;
-	}
-
-	case swc1_op:{
-		u32 __user *va = (u32 __user *) (xcp->regs[MIPSInst_RS(ir)] +
-			MIPSInst_SIMM(ir));
-		u32 val;
 
+	case swc1_op:
+		wva = (u32 __user *) (xcp->regs[MIPSInst_RS(ir)] +
+				      MIPSInst_SIMM(ir));
 		MIPS_FPU_EMU_INC_STATS(stores);
-		SIFROMREG(val, MIPSInst_RT(ir));
-		if (!access_ok(VERIFY_WRITE, va, sizeof(u32))) {
+		SIFROMREG(wval, MIPSInst_RT(ir));
+		if (!access_ok(VERIFY_WRITE, wva, sizeof(u32))) {
 			MIPS_FPU_EMU_INC_STATS(errors);
-			*fault_addr = va;
+			*fault_addr = wva;
 			return SIGBUS;
 		}
-		if (__put_user(val, va)) {
+		if (__put_user(wval, wva)) {
 			MIPS_FPU_EMU_INC_STATS(errors);
-			*fault_addr = va;
+			*fault_addr = wva;
 			return SIGSEGV;
 		}
 		break;
-	}
 
 	case cop1_op:
 		switch (MIPSInst_RS(ir)) {
-
 		case dmfc_op:
 			if (!cpu_has_mips_3_4_5 && !cpu_has_mips64)
 				return SIGILL;
@@ -1111,10 +1104,8 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 			SITOREG(xcp->regs[MIPSInst_RT(ir)], MIPSInst_RD(ir));
 			break;
 
-		case cfc_op:{
+		case cfc_op:
 			/* cop control register rd -> gpr[rt] */
-			u32 value;
-
 			if (MIPSInst_RD(ir) == FPCREG_CSR) {
 				value = ctx->fcr31;
 				value = (value & ~FPU_CSR_RM) |
@@ -1130,12 +1121,9 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 			if (MIPSInst_RT(ir))
 				xcp->regs[MIPSInst_RT(ir)] = value;
 			break;
-		}
 
-		case ctc_op:{
+		case ctc_op:
 			/* copregister rd <- rt */
-			u32 value;
-
 			if (MIPSInst_RT(ir) == 0)
 				value = 0;
 			else
@@ -1160,12 +1148,8 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 				return SIGFPE;
 			}
 			break;
-		}
-
-		case bc_op:{
-			unsigned int cbit;
-			int likely = 0;
 
+		case bc_op:
 			if (delay_slot(xcp))
 				return SIGILL;
 
@@ -1175,6 +1159,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 				cbit = FPU_CSR_COND;
 			cond = ctx->fcr31 & cbit;
 
+			likely = 0;
 			switch (MIPSInst_RT(ir) & 3) {
 			case bcfl_op:
 				likely = 1;
@@ -1192,8 +1177,8 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 
 			set_delay_slot(xcp);
 			if (cond) {
-				/* branch taken: emulate dslot
-				 * instruction
+				/*
+				 * Branch taken: emulate dslot instruction
 				 */
 				xcp->cp0_epc += dec_insn.pc_inc;
 
@@ -1228,8 +1213,10 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 				switch (MIPSInst_OPCODE(ir)) {
 				case lwc1_op:
 					goto emul;
+
 				case swc1_op:
 					goto emul;
+
 				case ldc1_op:
 				case sdc1_op:
 					if (cpu_has_mips_2_3_4_5 ||
@@ -1238,14 +1225,17 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 
 					return SIGILL;
 					goto emul;
+
 				case cop1_op:
 					goto emul;
+
 				case cop1x_op:
 					if (cpu_has_mips_4_5 || cpu_has_mips64)
 						/* its one of ours */
 						goto emul;
 
 					return SIGILL;
+
 				case spec_op:
 					if (!cpu_has_mips_4_5_r)
 						return SIGILL;
@@ -1260,10 +1250,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 				 * instruction in the dslot
 				 */
 				return mips_dsemul(xcp, ir, contpc);
-			}
-			else {
-				/* branch not taken */
-				if (likely) {
+			} else if (likely) {	/* branch not taken */
 					/*
 					 * branch likely nullifies
 					 * dslot if not taken
@@ -1275,26 +1262,19 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 					 * dslot as normal insn
 					 */
 				}
-			}
 			break;
-		}
 
 		default:
 			if (!(MIPSInst_RS(ir) & 0x10))
 				return SIGILL;
-			{
-				int sig;
 
-				/* a real fpu computation instruction */
-				if ((sig = fpu_emu(xcp, ctx, ir)))
-					return sig;
-			}
+			/* a real fpu computation instruction */
+			if ((sig = fpu_emu(xcp, ctx, ir)))
+				return sig;
 		}
 		break;
 
-	case cop1x_op:{
-		int sig;
-
+	case cop1x_op:
 		if (!cpu_has_mips_4_5 && !cpu_has_mips64)
 			return SIGILL;
 
@@ -1302,7 +1282,6 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 		if (sig)
 			return sig;
 		break;
-	}
 
 	case spec_op:
 		if (!cpu_has_mips_4_5_r)
@@ -1477,7 +1456,7 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 
 			ctx->fcr31 = (ctx->fcr31 & ~FPU_CSR_ALL_X) | rcsr;
 			if ((ctx->fcr31 >> 5) & ctx->fcr31 & FPU_CSR_ALL_E) {
-				/*printk ("SIGFPE: fpu csr = %08x\n",
+				/*printk ("SIGFPE: FPU csr = %08x\n",
 				   ctx->fcr31); */
 				return SIGFPE;
 			}
@@ -1584,6 +1563,8 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 {
 	int rfmt;		/* resulting format */
 	unsigned rcsr = 0;	/* resulting csr */
+	unsigned int oldrm;
+	unsigned int cbit;
 	unsigned cond;
 	union {
 		union ieee754dp d;
@@ -1591,14 +1572,16 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 		int w;
 		s64 l;
 	} rv;			/* resulting value */
+	u64 bits;
 
 	MIPS_FPU_EMU_INC_STATS(cp1ops);
 	switch (rfmt = (MIPSInst_FFMT(ir) & 0xf)) {
-	case s_fmt:{		/* 0 */
+	case s_fmt: {		/* 0 */
 		union {
 			union ieee754sp(*b) (union ieee754sp, union ieee754sp);
 			union ieee754sp(*u) (union ieee754sp);
 		} handler;
+		union ieee754sp fs, ft;
 
 		switch (MIPSInst_FUNC(ir)) {
 			/* binary ops */
@@ -1622,6 +1605,7 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 
 			handler.u = ieee754sp_sqrt;
 			goto scopuop;
+
 		/*
 		 * Note that on some MIPS IV implementations such as the
 		 * R5000 and R8000 the FSQRT and FRECIP instructions do not
@@ -1633,6 +1617,7 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 
 			handler.u = fpemu_sp_rsqrt;
 			goto scopuop;
+
 		case frecip_op:
 			if (!cpu_has_mips_4_5_r2)
 				return SIGILL;
@@ -1650,6 +1635,7 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 				return 0;
 			SPFROMREG(rv.s, MIPSInst_FS(ir));
 			break;
+
 		case fmovz_op:
 			if (!cpu_has_mips_4_5_r)
 				return SIGILL;
@@ -1658,6 +1644,7 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 				return 0;
 			SPFROMREG(rv.s, MIPSInst_FS(ir));
 			break;
+
 		case fmovn_op:
 			if (!cpu_has_mips_4_5_r)
 				return SIGILL;
@@ -1666,37 +1653,32 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 				return 0;
 			SPFROMREG(rv.s, MIPSInst_FS(ir));
 			break;
+
 		case fabs_op:
 			handler.u = ieee754sp_abs;
 			goto scopuop;
+
 		case fneg_op:
 			handler.u = ieee754sp_neg;
 			goto scopuop;
+
 		case fmov_op:
 			/* an easy one */
 			SPFROMREG(rv.s, MIPSInst_FS(ir));
 			goto copcsr;
 
 			/* binary op on handler */
-		      scopbop:
-			{
-				union ieee754sp fs, ft;
-
-				SPFROMREG(fs, MIPSInst_FS(ir));
-				SPFROMREG(ft, MIPSInst_FT(ir));
-
-				rv.s = (*handler.b) (fs, ft);
-				goto copcsr;
-			}
-		      scopuop:
-			{
-				union ieee754sp fs;
+scopbop:
+			SPFROMREG(fs, MIPSInst_FS(ir));
+			SPFROMREG(ft, MIPSInst_FT(ir));
 
-				SPFROMREG(fs, MIPSInst_FS(ir));
-				rv.s = (*handler.u) (fs);
-				goto copcsr;
-			}
-		      copcsr:
+			rv.s = (*handler.b) (fs, ft);
+			goto copcsr;
+scopuop:
+			SPFROMREG(fs, MIPSInst_FS(ir));
+			rv.s = (*handler.u) (fs);
+			goto copcsr;
+copcsr:
 			if (ieee754_cxtest(IEEE754_INEXACT))
 				rcsr |= FPU_CSR_INE_X | FPU_CSR_INE_S;
 			if (ieee754_cxtest(IEEE754_UNDERFLOW))
@@ -1712,44 +1694,35 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 			/* unary conv ops */
 		case fcvts_op:
 			return SIGILL;	/* not defined */
-		case fcvtd_op:{
-			union ieee754sp fs;
 
+		case fcvtd_op:
 			SPFROMREG(fs, MIPSInst_FS(ir));
 			rv.d = ieee754dp_fsp(fs);
 			rfmt = d_fmt;
 			goto copcsr;
-		}
-		case fcvtw_op:{
-			union ieee754sp fs;
 
+		case fcvtw_op:
 			SPFROMREG(fs, MIPSInst_FS(ir));
 			rv.w = ieee754sp_tint(fs);
 			rfmt = w_fmt;
 			goto copcsr;
-		}
 
 		case fround_op:
 		case ftrunc_op:
 		case fceil_op:
-		case ffloor_op:{
-			unsigned int oldrm = ieee754_csr.rm;
-			union ieee754sp fs;
-
+		case ffloor_op:
 			if (!cpu_has_mips_2_3_4_5 && !cpu_has_mips64)
 				return SIGILL;
 
+			oldrm = ieee754_csr.rm;
 			SPFROMREG(fs, MIPSInst_FS(ir));
 			ieee754_csr.rm = ieee_rm[modeindex(MIPSInst_FUNC(ir))];
 			rv.w = ieee754sp_tint(fs);
 			ieee754_csr.rm = oldrm;
 			rfmt = w_fmt;
 			goto copcsr;
-		}
-
-		case fcvtl_op:{
-			union ieee754sp fs;
 
+		case fcvtl_op:
 			if (!cpu_has_mips_3_4_5 && !cpu_has_mips64)
 				return SIGILL;
 
@@ -1757,25 +1730,21 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 			rv.l = ieee754sp_tlong(fs);
 			rfmt = l_fmt;
 			goto copcsr;
-		}
 
 		case froundl_op:
 		case ftruncl_op:
 		case fceill_op:
-		case ffloorl_op:{
-			unsigned int oldrm = ieee754_csr.rm;
-			union ieee754sp fs;
-
+		case ffloorl_op:
 			if (!cpu_has_mips_3_4_5 && !cpu_has_mips64)
 				return SIGILL;
 
+			oldrm = ieee754_csr.rm;
 			SPFROMREG(fs, MIPSInst_FS(ir));
 			ieee754_csr.rm = ieee_rm[modeindex(MIPSInst_FUNC(ir))];
 			rv.l = ieee754sp_tlong(fs);
 			ieee754_csr.rm = oldrm;
 			rfmt = l_fmt;
 			goto copcsr;
-		}
 
 		default:
 			if (MIPSInst_FUNC(ir) >= fcmp_op) {
@@ -1793,16 +1762,15 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 				else
 					goto copcsr;
 
-			}
-			else {
+			} else
 				return SIGILL;
-			}
 			break;
 		}
 		break;
 	}
 
-	case d_fmt:{
+	case d_fmt: {
+		union ieee754dp fs, ft;
 		union {
 			union ieee754dp(*b) (union ieee754dp, union ieee754dp);
 			union ieee754dp(*u) (union ieee754dp);
@@ -1887,65 +1855,51 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 			goto copcsr;
 
 			/* binary op on handler */
-		      dcopbop:{
-				union ieee754dp fs, ft;
-
-				DPFROMREG(fs, MIPSInst_FS(ir));
-				DPFROMREG(ft, MIPSInst_FT(ir));
-
-				rv.d = (*handler.b) (fs, ft);
-				goto copcsr;
-			}
-		      dcopuop:{
-				union ieee754dp fs;
-
-				DPFROMREG(fs, MIPSInst_FS(ir));
-				rv.d = (*handler.u) (fs);
-				goto copcsr;
-			}
+dcopbop:
+			DPFROMREG(fs, MIPSInst_FS(ir));
+			DPFROMREG(ft, MIPSInst_FT(ir));
 
-			/* unary conv ops */
-		case fcvts_op:{
-			union ieee754dp fs;
+			rv.d = (*handler.b) (fs, ft);
+			goto copcsr;
+dcopuop:
+			DPFROMREG(fs, MIPSInst_FS(ir));
+			rv.d = (*handler.u) (fs);
+			goto copcsr;
 
+		/*
+		 * unary conv ops
+		 */
+		case fcvts_op:
 			DPFROMREG(fs, MIPSInst_FS(ir));
 			rv.s = ieee754sp_fdp(fs);
 			rfmt = s_fmt;
 			goto copcsr;
-		}
+
 		case fcvtd_op:
 			return SIGILL;	/* not defined */
 
-		case fcvtw_op:{
-			union ieee754dp fs;
-
+		case fcvtw_op:
 			DPFROMREG(fs, MIPSInst_FS(ir));
 			rv.w = ieee754dp_tint(fs);	/* wrong */
 			rfmt = w_fmt;
 			goto copcsr;
-		}
 
 		case fround_op:
 		case ftrunc_op:
 		case fceil_op:
-		case ffloor_op:{
-			unsigned int oldrm = ieee754_csr.rm;
-			union ieee754dp fs;
-
+		case ffloor_op:
 			if (!cpu_has_mips_2_3_4_5_r)
 				return SIGILL;
 
+			oldrm = ieee754_csr.rm;
 			DPFROMREG(fs, MIPSInst_FS(ir));
 			ieee754_csr.rm = ieee_rm[modeindex(MIPSInst_FUNC(ir))];
 			rv.w = ieee754dp_tint(fs);
 			ieee754_csr.rm = oldrm;
 			rfmt = w_fmt;
 			goto copcsr;
-		}
-
-		case fcvtl_op:{
-			union ieee754dp fs;
 
+		case fcvtl_op:
 			if (!cpu_has_mips_3_4_5 && !cpu_has_mips64)
 				return SIGILL;
 
@@ -1953,25 +1907,21 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 			rv.l = ieee754dp_tlong(fs);
 			rfmt = l_fmt;
 			goto copcsr;
-		}
 
 		case froundl_op:
 		case ftruncl_op:
 		case fceill_op:
-		case ffloorl_op:{
-			unsigned int oldrm = ieee754_csr.rm;
-			union ieee754dp fs;
-
+		case ffloorl_op:
 			if (!cpu_has_mips_3_4_5 && !cpu_has_mips64)
 				return SIGILL;
 
+			oldrm = ieee754_csr.rm;
 			DPFROMREG(fs, MIPSInst_FS(ir));
 			ieee754_csr.rm = ieee_rm[modeindex(MIPSInst_FUNC(ir))];
 			rv.l = ieee754dp_tlong(fs);
 			ieee754_csr.rm = oldrm;
 			rfmt = l_fmt;
 			goto copcsr;
-		}
 
 		default:
 			if (MIPSInst_FUNC(ir) >= fcmp_op) {
@@ -1998,11 +1948,8 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 			break;
 		}
 		break;
-	}
-
-	case w_fmt:{
-		union ieee754sp fs;
 
+	case w_fmt:
 		switch (MIPSInst_FUNC(ir)) {
 		case fcvts_op:
 			/* convert word to single precision real */
@@ -2022,8 +1969,7 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 		break;
 	}
 
-	case l_fmt:{
-		u64 bits;
+	case l_fmt:
 
 		if (!cpu_has_mips_3_4_5 && !cpu_has_mips64)
 			return SIGILL;
@@ -2045,7 +1991,6 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 			return SIGILL;
 		}
 		break;
-	}
 
 	default:
 		return SIGILL;
@@ -2060,7 +2005,7 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 	 */
 	ctx->fcr31 = (ctx->fcr31 & ~FPU_CSR_ALL_X) | rcsr;
 	if ((ctx->fcr31 >> 5) & ctx->fcr31 & FPU_CSR_ALL_E) {
-		/*printk ("SIGFPE: fpu csr = %08x\n",ctx->fcr31); */
+		/*printk ("SIGFPE: FPU csr = %08x\n",ctx->fcr31); */
 		return SIGFPE;
 	}
 
@@ -2068,7 +2013,6 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 	 * Now we can safely write the result back to the register file.
 	 */
 	switch (rfmt) {
-		unsigned int cbit;
 	case -1:
 
 		if (cpu_has_mips_4_5_r)
@@ -2200,7 +2144,7 @@ int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 
 	/* SIGILL indicates a non-fpu instruction */
 	if (sig == SIGILL && xcp->cp0_epc != oldepc)
-		/* but if epc has advanced, then ignore it */
+		/* but if EPC has advanced, then ignore it */
 		sig = 0;
 
 	return sig;

arch/mips/math-emu/dp_add.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,17 +16,15 @@
  *
  *  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.
- *
- * ########################################################################
- *
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
 union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
 {
+	int s;
+
 	COMPXDP;
 	COMPYDP;
 
@@ -69,9 +65,9 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
 		return x;
 
 
-		/* Infinity handling
-		 */
-
+	/*
+	 * Infinity handling
+	 */
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
 		if (xs == ys)
 			return x;
@@ -88,15 +84,14 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
 		return x;
 
-		/* Zero handling
-		 */
-
+	/*
+	 * Zero handling
+	 */
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
 		if (xs == ys)
 			return x;
 		else
-			return ieee754dp_zero(ieee754_csr.rm ==
-					      IEEE754_RD);
+			return ieee754dp_zero(ieee754_csr.rm == IEEE754_RD);
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO):
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO):
@@ -125,20 +120,24 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
 	assert(xm & DP_HIDDEN_BIT);
 	assert(ym & DP_HIDDEN_BIT);
 
-	/* provide guard,round and stick bit space */
+	/*
+	 * Provide guard,round and stick bit space.
+	 */
 	xm <<= 3;
 	ym <<= 3;
 
 	if (xe > ye) {
-		/* have to shift y fraction right to align
+		/*
+		 * Have to shift y fraction right to align.
 		 */
-		int s = xe - ye;
+		s = xe - ye;
 		ym = XDPSRS(ym, s);
 		ye += s;
 	} else if (ye > xe) {
-		/* have to shift x fraction right to align
+		/*
+		 * Have to shift x fraction right to align.
 		 */
-		int s = ye - xe;
+		s = ye - xe;
 		xm = XDPSRS(xm, s);
 		xe += s;
 	}
@@ -146,8 +145,9 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
 	assert(xe <= DP_EMAX);
 
 	if (xs == ys) {
-		/* generate 28 bit result of adding two 27 bit numbers
-		 * leaving result in xm,xs,xe
+		/*
+		 * Generate 28 bit result of adding two 27 bit numbers
+		 * leaving result in xm, xs and xe.
 		 */
 		xm = xm + ym;
 		xe = xe;
@@ -168,15 +168,15 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
 			xs = ys;
 		}
 		if (xm == 0)
-			return ieee754dp_zero(ieee754_csr.rm ==
-					      IEEE754_RD);
+			return ieee754dp_zero(ieee754_csr.rm == IEEE754_RD);
 
-		/* normalize to rounding precision */
+		/*
+		 * Normalize to rounding precision.
+		 */
 		while ((xm >> (DP_FBITS + 3)) == 0) {
 			xm <<= 1;
 			xe--;
 		}
-
 	}
 
 	return ieee754dp_format(xs, xe, xm);

arch/mips/math-emu/dp_cmp.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,16 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
 int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig)
 {
+	s64 vx;
+	s64 vy;
+
 	COMPXDP;
 	COMPYDP;
 
@@ -48,8 +46,8 @@ int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig)
 		}
 		return 0;
 	} else {
-		s64 vx = x.bits;
-		s64 vy = y.bits;
+		vx = x.bits;
+		vy = y.bits;
 
 		if (vx < 0)
 			vx = -vx ^ DP_SIGN_BIT;

arch/mips/math-emu/dp_div.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,17 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
 union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
 {
+	u64 rm;
+	int re;
+	u64 bm;
+
 	COMPXDP;
 	COMPYDP;
 
@@ -68,9 +67,9 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
 		return x;
 
 
-		/* Infinity handling
-		 */
-
+	/*
+	 * Infinity handling
+	 */
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		return ieee754dp_indef();
@@ -85,9 +84,9 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
 		return ieee754dp_inf(xs ^ ys);
 
-		/* Zero handling
-		 */
-
+	/*
+	 * Zero handling
+	 */
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		return ieee754dp_indef();
@@ -122,35 +121,34 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
 	xm <<= 3;
 	ym <<= 3;
 
-	{
-		/* now the dirty work */
-
-		u64 rm = 0;
-		int re = xe - ye;
-		u64 bm;
-
-		for (bm = DP_MBIT(DP_FBITS + 2); bm; bm >>= 1) {
-			if (xm >= ym) {
-				xm -= ym;
-				rm |= bm;
-				if (xm == 0)
-					break;
-			}
-			xm <<= 1;
-		}
-		rm <<= 1;
-		if (xm)
-			rm |= 1;	/* have remainder, set sticky */
+	/* now the dirty work */
 
-		assert(rm);
+	rm = 0;
+	re = xe - ye;
 
-		/* normalise rm to rounding precision ?
-		 */
-		while ((rm >> (DP_FBITS + 3)) == 0) {
-			rm <<= 1;
-			re--;
+	for (bm = DP_MBIT(DP_FBITS + 2); bm; bm >>= 1) {
+		if (xm >= ym) {
+			xm -= ym;
+			rm |= bm;
+			if (xm == 0)
+				break;
 		}
+		xm <<= 1;
+	}
+
+	rm <<= 1;
+	if (xm)
+		rm |= 1;	/* have remainder, set sticky */
 
-		return ieee754dp_format(xs == ys ? 0 : 1, re, rm);
+	assert(rm);
+
+	/*
+	 * Normalise rm to rounding precision ?
+	 */
+	while ((rm >> (DP_FBITS + 3)) == 0) {
+		rm <<= 1;
+		re--;
 	}
+
+	return ieee754dp_format(xs == ys ? 0 : 1, re, rm);
 }

arch/mips/math-emu/dp_fint.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,12 +16,9 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
 union ieee754dp ieee754dp_fint(int x)

arch/mips/math-emu/dp_flong.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,12 +16,9 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
 union ieee754dp ieee754dp_flong(s64 x)

arch/mips/math-emu/dp_fsp.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,12 +16,9 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 #include "ieee754dp.h"
 
@@ -41,6 +36,7 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x)
 	case IEEE754_CLASS_SNAN:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		return ieee754dp_nanxcpt(ieee754dp_indef());
+
 	case IEEE754_CLASS_QNAN:
 		return ieee754dp_nanxcpt(builddp(xs,
 						 DP_EMAX + 1 + DP_EBIAS,
@@ -49,8 +45,10 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x)
 						      SP_FBITS))));
 	case IEEE754_CLASS_INF:
 		return ieee754dp_inf(xs);
+
 	case IEEE754_CLASS_ZERO:
 		return ieee754dp_zero(xs);
+
 	case IEEE754_CLASS_DNORM:
 		/* normalize */
 		while ((xm >> SP_FBITS) == 0) {
@@ -58,11 +56,13 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x)
 			xe--;
 		}
 		break;
+
 	case IEEE754_CLASS_NORM:
 		break;
 	}
 
-	/* CAN'T possibly overflow,underflow, or need rounding
+	/*
+	 * Can't possibly overflow,underflow, or need rounding
 	 */
 
 	/* drop the hidden bit */

arch/mips/math-emu/dp_mul.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,25 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
 union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y)
 {
+	int re;
+	int rs;
+	u64 rm;
+	unsigned lxm;
+	unsigned hxm;
+	unsigned lym;
+	unsigned hym;
+	u64 lrm;
+	u64 hrm;
+	u64 t;
+	u64 at;
+
 	COMPXDP;
 	COMPYDP;
 
@@ -68,8 +75,9 @@ union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y)
 		return x;
 
 
-		/* Infinity handling */
-
+	/*
+	 * Infinity handling
+	 */
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_ZERO):
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
@@ -107,71 +115,59 @@ union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y)
 	/* rm = xm * ym, re = xe+ye basically */
 	assert(xm & DP_HIDDEN_BIT);
 	assert(ym & DP_HIDDEN_BIT);
-	{
-		int re = xe + ye;
-		int rs = xs ^ ys;
-		u64 rm;
 
-		/* shunt to top of word */
-		xm <<= 64 - (DP_FBITS + 1);
-		ym <<= 64 - (DP_FBITS + 1);
+	re = xe + ye;
+	rs = xs ^ ys;
+
+	/* shunt to top of word */
+	xm <<= 64 - (DP_FBITS + 1);
+	ym <<= 64 - (DP_FBITS + 1);
 
-		/* multiply 32bits xm,ym to give high 32bits rm with stickness
-		 */
+	/*
+	 * Multiply 32 bits xm, ym to give high 32 bits rm with stickness.
+	 */
 
-		/* 32 * 32 => 64 */
+	/* 32 * 32 => 64 */
 #define DPXMULT(x, y)	((u64)(x) * (u64)y)
 
-		{
-			unsigned lxm = xm;
-			unsigned hxm = xm >> 32;
-			unsigned lym = ym;
-			unsigned hym = ym >> 32;
-			u64 lrm;
-			u64 hrm;
-
-			lrm = DPXMULT(lxm, lym);
-			hrm = DPXMULT(hxm, hym);
-
-			{
-				u64 t = DPXMULT(lxm, hym);
-				{
-					u64 at =
-					    lrm + (t << 32);
-					hrm += at < lrm;
-					lrm = at;
-				}
-				hrm = hrm + (t >> 32);
-			}
-
-			{
-				u64 t = DPXMULT(hxm, lym);
-				{
-					u64 at =
-					    lrm + (t << 32);
-					hrm += at < lrm;
-					lrm = at;
-				}
-				hrm = hrm + (t >> 32);
-			}
-			rm = hrm | (lrm != 0);
-		}
-
-		/*
-		 * sticky shift down to normal rounding precision
-		 */
-		if ((s64) rm < 0) {
-			rm =
-			    (rm >> (64 - (DP_FBITS + 1 + 3))) |
-			    ((rm << (DP_FBITS + 1 + 3)) != 0);
+	lxm = xm;
+	hxm = xm >> 32;
+	lym = ym;
+	hym = ym >> 32;
+
+	lrm = DPXMULT(lxm, lym);
+	hrm = DPXMULT(hxm, hym);
+
+	t = DPXMULT(lxm, hym);
+
+	at = lrm + (t << 32);
+	hrm += at < lrm;
+	lrm = at;
+
+	hrm = hrm + (t >> 32);
+
+	t = DPXMULT(hxm, lym);
+
+	at = lrm + (t << 32);
+	hrm += at < lrm;
+	lrm = at;
+
+	hrm = hrm + (t >> 32);
+
+	rm = hrm | (lrm != 0);
+
+	/*
+	 * Sticky shift down to normal rounding precision.
+	 */
+	if ((s64) rm < 0) {
+		rm = (rm >> (64 - (DP_FBITS + 1 + 3))) |
+		     ((rm << (DP_FBITS + 1 + 3)) != 0);
 			re++;
-		} else {
-			rm =
-			    (rm >> (64 - (DP_FBITS + 1 + 3 + 1))) |
-			    ((rm << (DP_FBITS + 1 + 3 + 1)) != 0);
-		}
-		assert(rm & (DP_HIDDEN_BIT << 3));
-
-		return ieee754dp_format(rs, re, rm);
+	} else {
+		rm = (rm >> (64 - (DP_FBITS + 1 + 3 + 1))) |
+		     ((rm << (DP_FBITS + 1 + 3 + 1)) != 0);
 	}
+	assert(rm & (DP_HIDDEN_BIT << 3));
+
+	return ieee754dp_format(rs, re, rm);
 }

arch/mips/math-emu/dp_simple.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,12 +16,9 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
 union ieee754dp ieee754dp_neg(union ieee754dp x)
@@ -51,7 +46,6 @@ union ieee754dp ieee754dp_neg(union ieee754dp x)
 	return x;
 }
 
-
 union ieee754dp ieee754dp_abs(union ieee754dp x)
 {
 	COMPXDP;

arch/mips/math-emu/dp_sqrt.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,12 +16,9 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
 static const unsigned table[] = {
@@ -50,12 +45,15 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x)
 	case IEEE754_CLASS_QNAN:
 		/* sqrt(Nan) = Nan */
 		return ieee754dp_nanxcpt(x);
+
 	case IEEE754_CLASS_SNAN:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		return ieee754dp_nanxcpt(ieee754dp_indef());
+
 	case IEEE754_CLASS_ZERO:
 		/* sqrt(0) = 0 */
 		return x;
+
 	case IEEE754_CLASS_INF:
 		if (xs) {
 			/* sqrt(-Inf) = Nan */
@@ -64,9 +62,11 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x)
 		}
 		/* sqrt(+Inf) = Inf */
 		return x;
+
 	case IEEE754_CLASS_DNORM:
 		DPDNORMX;
 		/* fall through */
+
 	case IEEE754_CLASS_NORM:
 		if (xs) {
 			/* sqrt(-x) = Nan */

arch/mips/math-emu/dp_sub.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,15 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
 union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
 {
+	int s;
+
 	COMPXDP;
 	COMPYDP;
 
@@ -68,9 +65,9 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
 		return x;
 
 
-		/* Infinity handling
-		 */
-
+	/*
+	 * Infinity handling
+	 */
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
 		if (xs != ys)
 			return x;
@@ -87,15 +84,14 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
 		return x;
 
-		/* Zero handling
-		 */
-
+	/*
+	 * Zero handling
+	 */
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
 		if (xs != ys)
 			return x;
 		else
-			return ieee754dp_zero(ieee754_csr.rm ==
-					      IEEE754_RD);
+			return ieee754dp_zero(ieee754_csr.rm == IEEE754_RD);
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO):
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO):
@@ -136,15 +132,17 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
 	ym <<= 3;
 
 	if (xe > ye) {
-		/* have to shift y fraction right to align
+		/*
+		 * Have to shift y fraction right to align
 		 */
-		int s = xe - ye;
+		s = xe - ye;
 		ym = XDPSRS(ym, s);
 		ye += s;
 	} else if (ye > xe) {
-		/* have to shift x fraction right to align
+		/*
+		 * Have to shift x fraction right to align
 		 */
-		int s = ye - xe;
+		s = ye - xe;
 		xm = XDPSRS(xm, s);
 		xe += s;
 	}

arch/mips/math-emu/dp_tint.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,18 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
 int ieee754dp_tint(union ieee754dp x)
 {
+	u64 residue;
+	int round;
+	int sticky;
+	int odd;
+
 	COMPXDP;
 
 	ieee754_clearcx();
@@ -41,8 +41,10 @@ int ieee754dp_tint(union ieee754dp x)
 	case IEEE754_CLASS_INF:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		return ieee754si_indef();
+
 	case IEEE754_CLASS_ZERO:
 		return 0;
+
 	case IEEE754_CLASS_DNORM:
 	case IEEE754_CLASS_NORM:
 		break;
@@ -57,11 +59,6 @@ int ieee754dp_tint(union ieee754dp x)
 	if (xe > DP_FBITS) {
 		xm <<= xe - DP_FBITS;
 	} else if (xe < DP_FBITS) {
-		u64 residue;
-		int round;
-		int sticky;
-		int odd;
-
 		if (xe < -1) {
 			residue = xm;
 			round = 0;

arch/mips/math-emu/dp_tlong.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,18 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
 s64 ieee754dp_tlong(union ieee754dp x)
 {
+	u64 residue;
+	int round;
+	int sticky;
+	int odd;
+
 	COMPXDP;
 
 	ieee754_clearcx();
@@ -41,8 +41,10 @@ s64 ieee754dp_tlong(union ieee754dp x)
 	case IEEE754_CLASS_INF:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		return ieee754di_indef();
+
 	case IEEE754_CLASS_ZERO:
 		return 0;
+
 	case IEEE754_CLASS_DNORM:
 	case IEEE754_CLASS_NORM:
 		break;
@@ -60,11 +62,6 @@ s64 ieee754dp_tlong(union ieee754dp x)
 	if (xe > DP_FBITS) {
 		xm <<= xe - DP_FBITS;
 	} else if (xe < DP_FBITS) {
-		u64 residue;
-		int round;
-		int sticky;
-		int odd;
-
 		if (xe < -1) {
 			residue = xm;
 			round = 0;

arch/mips/math-emu/ieee754.c

@@ -10,8 +10,6 @@
  * 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.
@@ -23,9 +21,7 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
 #include <linux/compiler.h>
@@ -34,8 +30,9 @@
 #include "ieee754sp.h"
 #include "ieee754dp.h"
 
-/* special constants
-*/
+/*
+ * Special constants
+ */
 
 #define DPCNST(s, b, m)							\
 {									\

arch/mips/math-emu/ieee754.h

@@ -13,7 +13,7 @@
  *
  *  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.
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  *
  *  Nov 7, 2000
  *  Modification to allow integration with Linux kernel

arch/mips/math-emu/ieee754d.c

@@ -16,7 +16,7 @@
  *
  *  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.
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  *
  *  Nov 7, 2000
  *  Modified to build and operate in Linux kernel environment.

arch/mips/math-emu/ieee754dp.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,9 +16,7 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
 #include <linux/compiler.h>

arch/mips/math-emu/ieee754dp.h

@@ -6,8 +6,6 @@
  * 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.
@@ -19,9 +17,7 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
 #include <linux/compiler.h>

arch/mips/math-emu/ieee754int.h

@@ -6,8 +6,6 @@
  * 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.
@@ -19,9 +17,7 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 #ifndef __IEEE754INT_H
 #define __IEEE754INT_H

arch/mips/math-emu/ieee754sp.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,9 +16,7 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
 #include <linux/compiler.h>

arch/mips/math-emu/ieee754sp.h

@@ -6,8 +6,6 @@
  * 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.
@@ -19,9 +17,7 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
 #include <linux/compiler.h>

arch/mips/math-emu/kernel_linkage.c

@@ -13,7 +13,7 @@
  *
  *  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.
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  *
  * Routines corresponding to Linux kernel FP context
  * manipulation primitives for the Algorithmics MIPS

arch/mips/math-emu/sp_add.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,15 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 
 union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
 {
+	int s;
+
 	COMPXSP;
 	COMPYSP;
 
@@ -68,9 +65,9 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
 		return x;
 
 
-		/* Infinity handling
-		 */
-
+	/*
+	 * Infinity handling
+	 */
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
 		if (xs == ys)
 			return x;
@@ -87,15 +84,14 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
 		return x;
 
-		/* Zero handling
-		 */
-
+	/*
+	 * Zero handling
+	 */
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
 		if (xs == ys)
 			return x;
 		else
-			return ieee754sp_zero(ieee754_csr.rm ==
-					      IEEE754_RD);
+			return ieee754sp_zero(ieee754_csr.rm == IEEE754_RD);
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO):
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO):
@@ -108,6 +104,8 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		SPDNORMX;
 
+		/* FALL THROUGH */
+
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		SPDNORMY;
 		break;
@@ -122,27 +120,32 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
 	assert(xm & SP_HIDDEN_BIT);
 	assert(ym & SP_HIDDEN_BIT);
 
-	/* provide guard,round and stick bit space */
+	/*
+	 * Provide guard, round and stick bit space.
+	 */
 	xm <<= 3;
 	ym <<= 3;
 
 	if (xe > ye) {
-		/* have to shift y fraction right to align
+		/*
+		 * Have to shift y fraction right to align.
 		 */
-		int s = xe - ye;
+		s = xe - ye;
 		SPXSRSYn(s);
 	} else if (ye > xe) {
-		/* have to shift x fraction right to align
+		/*
+		 * Have to shift x fraction right to align.
 		 */
-		int s = ye - xe;
+		s = ye - xe;
 		SPXSRSXn(s);
 	}
 	assert(xe == ye);
 	assert(xe <= SP_EMAX);
 
 	if (xs == ys) {
-		/* generate 28 bit result of adding two 27 bit numbers
-		 * leaving result in xm,xs,xe
+		/*
+		 * Generate 28 bit result of adding two 27 bit numbers
+		 * leaving result in xm, xs and xe.
 		 */
 		xm = xm + ym;
 		xe = xe;
@@ -162,15 +165,15 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
 			xs = ys;
 		}
 		if (xm == 0)
-			return ieee754sp_zero(ieee754_csr.rm ==
-					      IEEE754_RD);
+			return ieee754sp_zero(ieee754_csr.rm == IEEE754_RD);
 
-		/* normalize in extended single precision */
+		/*
+		 * Normalize in extended single precision
+		 */
 		while ((xm >> (SP_FBITS + 3)) == 0) {
 			xm <<= 1;
 			xe--;
 		}
-
 	}
 
 	return ieee754sp_format(xs, xe, xm);

arch/mips/math-emu/sp_cmp.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,16 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 
 int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cmp, int sig)
 {
+	int vx;
+	int vy;
+
 	COMPXSP;
 	COMPYSP;
 
@@ -48,8 +46,8 @@ int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cmp, int sig)
 		}
 		return 0;
 	} else {
-		int vx = x.bits;
-		int vy = y.bits;
+		vx = x.bits;
+		vy = y.bits;
 
 		if (vx < 0)
 			vx = -vx ^ SP_SIGN_BIT;

arch/mips/math-emu/sp_div.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,17 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 
 union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
 {
+	unsigned rm;
+	int re;
+	unsigned bm;
+
 	COMPXSP;
 	COMPYSP;
 
@@ -68,9 +67,9 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
 		return x;
 
 
-		/* Infinity handling
-		 */
-
+	/*
+	 * Infinity handling
+	 */
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		return ieee754sp_indef();
@@ -85,9 +84,9 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
 		return ieee754sp_inf(xs ^ ys);
 
-		/* Zero handling
-		 */
-
+	/*
+	 * Zero handling
+	 */
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		return ieee754sp_indef();
@@ -122,35 +121,33 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
 	xm <<= 3;
 	ym <<= 3;
 
-	{
-		/* now the dirty work */
-
-		unsigned rm = 0;
-		int re = xe - ye;
-		unsigned bm;
-
-		for (bm = SP_MBIT(SP_FBITS + 2); bm; bm >>= 1) {
-			if (xm >= ym) {
-				xm -= ym;
-				rm |= bm;
-				if (xm == 0)
-					break;
-			}
-			xm <<= 1;
-		}
-		rm <<= 1;
-		if (xm)
-			rm |= 1;	/* have remainder, set sticky */
+	/* now the dirty work */
 
-		assert(rm);
+	rm = 0;
+	re = xe - ye;
 
-		/* normalise rm to rounding precision ?
-		 */
-		while ((rm >> (SP_FBITS + 3)) == 0) {
-			rm <<= 1;
-			re--;
+	for (bm = SP_MBIT(SP_FBITS + 2); bm; bm >>= 1) {
+		if (xm >= ym) {
+			xm -= ym;
+			rm |= bm;
+			if (xm == 0)
+				break;
 		}
+		xm <<= 1;
+	}
+
+	rm <<= 1;
+	if (xm)
+		rm |= 1;	/* have remainder, set sticky */
 
-		return ieee754sp_format(xs == ys ? 0 : 1, re, rm);
+	assert(rm);
+
+	/* normalise rm to rounding precision ?
+	 */
+	while ((rm >> (SP_FBITS + 3)) == 0) {
+		rm <<= 1;
+		re--;
 	}
+
+	return ieee754sp_format(xs == ys ? 0 : 1, re, rm);
 }

arch/mips/math-emu/sp_fdp.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,17 +16,16 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 #include "ieee754dp.h"
 
 union ieee754sp ieee754sp_fdp(union ieee754dp x)
 {
+	u32 rm;
+
 	COMPXDP;
 	union ieee754sp nan;
 
@@ -42,16 +39,20 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x)
 	case IEEE754_CLASS_SNAN:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		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);
+
 	case IEEE754_CLASS_INF:
 		return ieee754sp_inf(xs);
+
 	case IEEE754_CLASS_ZERO:
 		return ieee754sp_zero(xs);
+
 	case IEEE754_CLASS_DNORM:
 		/* can't possibly be sp representable */
 		ieee754_setcx(IEEE754_UNDERFLOW);
@@ -60,18 +61,16 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x)
 				(ieee754_csr.rm == IEEE754_RD && xs))
 			return ieee754sp_mind(xs);
 		return ieee754sp_zero(xs);
+
 	case IEEE754_CLASS_NORM:
 		break;
 	}
 
-	{
-		u32 rm;
+	/*
+	 * Convert from DP_FBITS to SP_FBITS+3 with sticky right shift.
+	 */
+	rm = (xm >> (DP_FBITS - (SP_FBITS + 3))) |
+	     ((xm << (64 - (DP_FBITS - (SP_FBITS + 3)))) != 0);
 
-		/* convert from DP_FBITS to SP_FBITS+3 with sticky right shift
-		 */
-		rm = (xm >> (DP_FBITS - (SP_FBITS + 3))) |
-		    ((xm << (64 - (DP_FBITS - (SP_FBITS + 3)))) != 0);
-
-		return ieee754sp_format(xs, xe, rm);
-	}
+	return ieee754sp_format(xs, xe, rm);
 }

arch/mips/math-emu/sp_fint.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,12 +16,9 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 
 union ieee754sp ieee754sp_fint(int x)

arch/mips/math-emu/sp_flong.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,12 +16,9 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 
 union ieee754sp ieee754sp_flong(s64 x)

arch/mips/math-emu/sp_mul.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,25 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 
 union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y)
 {
+	int re;
+	int rs;
+	unsigned rm;
+	unsigned short lxm;
+	unsigned short hxm;
+	unsigned short lym;
+	unsigned short hym;
+	unsigned lrm;
+	unsigned hrm;
+	unsigned t;
+	unsigned at;
+
 	COMPXSP;
 	COMPYSP;
 
@@ -68,8 +75,9 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y)
 		return x;
 
 
-		/* Infinity handling */
-
+	/*
+	 * Infinity handling
+	 */
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_ZERO):
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
@@ -108,63 +116,50 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y)
 	assert(xm & SP_HIDDEN_BIT);
 	assert(ym & SP_HIDDEN_BIT);
 
-	{
-		int re = xe + ye;
-		int rs = xs ^ ys;
-		unsigned rm;
-
-		/* shunt to top of word */
-		xm <<= 32 - (SP_FBITS + 1);
-		ym <<= 32 - (SP_FBITS + 1);
-
-		/* multiply 32bits xm,ym to give high 32bits rm with stickness
-		 */
-		{
-			unsigned short lxm = xm & 0xffff;
-			unsigned short hxm = xm >> 16;
-			unsigned short lym = ym & 0xffff;
-			unsigned short hym = ym >> 16;
-			unsigned lrm;
-			unsigned hrm;
-
-			lrm = lxm * lym;	/* 16 * 16 => 32 */
-			hrm = hxm * hym;	/* 16 * 16 => 32 */
-
-			{
-				unsigned t = lxm * hym; /* 16 * 16 => 32 */
-				{
-					unsigned at = lrm + (t << 16);
-					hrm += at < lrm;
-					lrm = at;
-				}
-				hrm = hrm + (t >> 16);
-			}
-
-			{
-				unsigned t = hxm * lym; /* 16 * 16 => 32 */
-				{
-					unsigned at = lrm + (t << 16);
-					hrm += at < lrm;
-					lrm = at;
-				}
-				hrm = hrm + (t >> 16);
-			}
-			rm = hrm | (lrm != 0);
-		}
-
-		/*
-		 * sticky shift down to normal rounding precision
-		 */
-		if ((int) rm < 0) {
-			rm = (rm >> (32 - (SP_FBITS + 1 + 3))) |
-			    ((rm << (SP_FBITS + 1 + 3)) != 0);
-			re++;
-		} else {
-			rm = (rm >> (32 - (SP_FBITS + 1 + 3 + 1))) |
-			    ((rm << (SP_FBITS + 1 + 3 + 1)) != 0);
-		}
-		assert(rm & (SP_HIDDEN_BIT << 3));
-
-		return ieee754sp_format(rs, re, rm);
+	re = xe + ye;
+	rs = xs ^ ys;
+
+	/* shunt to top of word */
+	xm <<= 32 - (SP_FBITS + 1);
+	ym <<= 32 - (SP_FBITS + 1);
+
+	/*
+	 * Multiply 32 bits xm, ym to give high 32 bits rm with stickness.
+	 */
+	lxm = xm & 0xffff;
+	hxm = xm >> 16;
+	lym = ym & 0xffff;
+	hym = ym >> 16;
+
+	lrm = lxm * lym;	/* 16 * 16 => 32 */
+	hrm = hxm * hym;	/* 16 * 16 => 32 */
+
+	t = lxm * hym; /* 16 * 16 => 32 */
+	at = lrm + (t << 16);
+	hrm += at < lrm;
+	lrm = at;
+	hrm = hrm + (t >> 16);
+
+	t = hxm * lym; /* 16 * 16 => 32 */
+	at = lrm + (t << 16);
+	hrm += at < lrm;
+	lrm = at;
+	hrm = hrm + (t >> 16);
+
+	rm = hrm | (lrm != 0);
+
+	/*
+	 * Sticky shift down to normal rounding precision.
+	 */
+	if ((int) rm < 0) {
+		rm = (rm >> (32 - (SP_FBITS + 1 + 3))) |
+		    ((rm << (SP_FBITS + 1 + 3)) != 0);
+		re++;
+	} else {
+		rm = (rm >> (32 - (SP_FBITS + 1 + 3 + 1))) |
+		     ((rm << (SP_FBITS + 1 + 3 + 1)) != 0);
 	}
+	assert(rm & (SP_HIDDEN_BIT << 3));
+
+	return ieee754sp_format(rs, re, rm);
 }

arch/mips/math-emu/sp_simple.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,12 +16,9 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 
 union ieee754sp ieee754sp_neg(union ieee754sp x)
@@ -51,7 +46,6 @@ union ieee754sp ieee754sp_neg(union ieee754sp x)
 	return x;
 }
 
-
 union ieee754sp ieee754sp_abs(union ieee754sp x)
 {
 	COMPXSP;

arch/mips/math-emu/sp_sqrt.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,12 +16,9 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 
 union ieee754sp ieee754sp_sqrt(union ieee754sp x)
@@ -43,12 +38,15 @@ union ieee754sp ieee754sp_sqrt(union ieee754sp x)
 	case IEEE754_CLASS_QNAN:
 		/* sqrt(Nan) = Nan */
 		return ieee754sp_nanxcpt(x);
+
 	case IEEE754_CLASS_SNAN:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		return ieee754sp_nanxcpt(ieee754sp_indef());
+
 	case IEEE754_CLASS_ZERO:
 		/* sqrt(0) = 0 */
 		return x;
+
 	case IEEE754_CLASS_INF:
 		if (xs) {
 			/* sqrt(-Inf) = Nan */
@@ -57,6 +55,7 @@ union ieee754sp ieee754sp_sqrt(union ieee754sp x)
 		}
 		/* sqrt(+Inf) = Inf */
 		return x;
+
 	case IEEE754_CLASS_DNORM:
 	case IEEE754_CLASS_NORM:
 		if (xs) {

arch/mips/math-emu/sp_sub.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,15 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 
 union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
 {
+	int s;
+
 	COMPXSP;
 	COMPYSP;
 
@@ -68,9 +65,9 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
 		return x;
 
 
-		/* Infinity handling
-		 */
-
+	/*
+	 * Infinity handling
+	 */
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
 		if (xs != ys)
 			return x;
@@ -87,15 +84,14 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
 	case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
 		return x;
 
-		/* Zero handling
-		 */
-
+	/*
+	 * Zero handling
+	 */
 	case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
 		if (xs != ys)
 			return x;
 		else
-			return ieee754sp_zero(ieee754_csr.rm ==
-					      IEEE754_RD);
+			return ieee754sp_zero(ieee754_csr.rm == IEEE754_RD);
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO):
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO):
@@ -133,14 +129,16 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
 	ym <<= 3;
 
 	if (xe > ye) {
-		/* have to shift y fraction right to align
+		/*
+		 * have to shift y fraction right to align
 		 */
-		int s = xe - ye;
+		s = xe - ye;
 		SPXSRSYn(s);
 	} else if (ye > xe) {
-		/* have to shift x fraction right to align
+		/*
+		 * have to shift x fraction right to align
 		 */
-		int s = ye - xe;
+		s = ye - xe;
 		SPXSRSXn(s);
 	}
 	assert(xe == ye);

arch/mips/math-emu/sp_tint.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,16 +16,18 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 
 int ieee754sp_tint(union ieee754sp x)
 {
+	u32 residue;
+	int round;
+	int sticky;
+	int odd;
+
 	COMPXSP;
 
 	ieee754_clearcx();
@@ -41,8 +41,10 @@ int ieee754sp_tint(union ieee754sp x)
 	case IEEE754_CLASS_INF:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		return ieee754si_indef();
+
 	case IEEE754_CLASS_ZERO:
 		return 0;
+
 	case IEEE754_CLASS_DNORM:
 	case IEEE754_CLASS_NORM:
 		break;
@@ -60,11 +62,6 @@ int ieee754sp_tint(union ieee754sp x)
 	if (xe > SP_FBITS) {
 		xm <<= xe - SP_FBITS;
 	} else {
-		u32 residue;
-		int round;
-		int sticky;
-		int odd;
-
 		if (xe < -1) {
 			residue = xm;
 			round = 0;

arch/mips/math-emu/sp_tlong.c

@@ -5,8 +5,6 @@
  * 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.
@@ -18,17 +16,19 @@
  *
  *  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.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754sp.h"
 #include "ieee754dp.h"
 
 s64 ieee754sp_tlong(union ieee754sp x)
 {
+	u32 residue;
+	int round;
+	int sticky;
+	int odd;
+
 	COMPXDP;		/* <-- need 64-bit mantissa tmp */
 
 	ieee754_clearcx();
@@ -42,8 +42,10 @@ s64 ieee754sp_tlong(union ieee754sp x)
 	case IEEE754_CLASS_INF:
 		ieee754_setcx(IEEE754_INVALID_OPERATION);
 		return ieee754di_indef();
+
 	case IEEE754_CLASS_ZERO:
 		return 0;
+
 	case IEEE754_CLASS_DNORM:
 	case IEEE754_CLASS_NORM:
 		break;
@@ -61,11 +63,6 @@ s64 ieee754sp_tlong(union ieee754sp x)
 	if (xe > SP_FBITS) {
 		xm <<= xe - SP_FBITS;
 	} else if (xe < SP_FBITS) {
-		u32 residue;
-		int round;
-		int sticky;
-		int odd;
-
 		if (xe < -1) {
 			residue = xm;
 			round = 0;