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-rw-r--r--arch/arm/nwfpe/softfloat-macros22
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/arm/nwfpe/softfloat-macros b/arch/arm/nwfpe/softfloat-macros
index 5469989f2c5e..5a060f95a58f 100644
--- a/arch/arm/nwfpe/softfloat-macros
+++ b/arch/arm/nwfpe/softfloat-macros
@@ -563,8 +563,14 @@ static bits64 estimateDiv128To64( bits64 a0, bits64 a1, bits64 b )
563 bits64 rem0, rem1, term0, term1; 563 bits64 rem0, rem1, term0, term1;
564 bits64 z; 564 bits64 z;
565 if ( b <= a0 ) return LIT64( 0xFFFFFFFFFFFFFFFF ); 565 if ( b <= a0 ) return LIT64( 0xFFFFFFFFFFFFFFFF );
566 b0 = b>>32; 566 b0 = b>>32; /* hence b0 is 32 bits wide now */
567 z = ( b0<<32 <= a0 ) ? LIT64( 0xFFFFFFFF00000000 ) : ( a0 / b0 )<<32; 567 if ( b0<<32 <= a0 ) {
568 z = LIT64( 0xFFFFFFFF00000000 );
569 } else {
570 z = a0;
571 do_div( z, b0 );
572 z <<= 32;
573 }
568 mul64To128( b, z, &term0, &term1 ); 574 mul64To128( b, z, &term0, &term1 );
569 sub128( a0, a1, term0, term1, &rem0, &rem1 ); 575 sub128( a0, a1, term0, term1, &rem0, &rem1 );
570 while ( ( (sbits64) rem0 ) < 0 ) { 576 while ( ( (sbits64) rem0 ) < 0 ) {
@@ -573,7 +579,12 @@ static bits64 estimateDiv128To64( bits64 a0, bits64 a1, bits64 b )
573 add128( rem0, rem1, b0, b1, &rem0, &rem1 ); 579 add128( rem0, rem1, b0, b1, &rem0, &rem1 );
574 } 580 }
575 rem0 = ( rem0<<32 ) | ( rem1>>32 ); 581 rem0 = ( rem0<<32 ) | ( rem1>>32 );
576 z |= ( b0<<32 <= rem0 ) ? 0xFFFFFFFF : rem0 / b0; 582 if ( b0<<32 <= rem0 ) {
583 z |= 0xFFFFFFFF;
584 } else {
585 do_div( rem0, b0 );
586 z |= rem0;
587 }
577 return z; 588 return z;
578 589
579} 590}
@@ -601,6 +612,7 @@ static bits32 estimateSqrt32( int16 aExp, bits32 a )
601 }; 612 };
602 int8 index; 613 int8 index;
603 bits32 z; 614 bits32 z;
615 bits64 A;
604 616
605 index = ( a>>27 ) & 15; 617 index = ( a>>27 ) & 15;
606 if ( aExp & 1 ) { 618 if ( aExp & 1 ) {
@@ -614,7 +626,9 @@ static bits32 estimateSqrt32( int16 aExp, bits32 a )
614 z = ( 0x20000 <= z ) ? 0xFFFF8000 : ( z<<15 ); 626 z = ( 0x20000 <= z ) ? 0xFFFF8000 : ( z<<15 );
615 if ( z <= a ) return (bits32) ( ( (sbits32) a )>>1 ); 627 if ( z <= a ) return (bits32) ( ( (sbits32) a )>>1 );
616 } 628 }
617 return ( (bits32) ( ( ( (bits64) a )<<31 ) / z ) ) + ( z>>1 ); 629 A = ( (bits64) a )<<31;
630 do_div( A, z );
631 return ( (bits32) A ) + ( z>>1 );
618 632
619} 633}
620 634