void DoShift( void ) { stack_entry *left; int shift; left = StkEntry( 1 ); RValue( ExprSP ); ConvertTo( ExprSP, TK_INTEGER, TM_SIGNED, 0 ); shift = I32FetchTrunc( ExprSP->v.sint ); RValue( left ); switch( left->info.kind ) { case TK_BOOL: case TK_ENUM: case TK_CHAR: case TK_INTEGER: if( shift >= 0 ) { U64ShiftL( &left->v.uint, shift, &left->v.uint ); } else if( (left->info.modifier & TM_MOD_MASK) == TM_UNSIGNED ) { U64ShiftR( &left->v.uint, -shift, &left->v.uint ); } else { I64ShiftR( &left->v.sint, -shift, &left->v.sint ); } break; default: Error( ERR_NONE, LIT_ENG( ERR_ILL_TYPE ) ); break; } CombineEntries( left, left, ExprSP ); }
OVL_EXTERN bool ConvR10( stack_entry *entry, conv_class from ) { xreal tmp; switch( from ) { case U1: case U2: case U4: case U8: //NYI: 64 bit support DToLD( U32FetchTrunc( entry->v.uint ), &tmp ); break; case I1: case I2: case I4: case I8: //NYI: 64 bit support DToLD( I32FetchTrunc( entry->v.sint ), &tmp ); break; case F4: case F8: case F10: tmp = entry->v.real; break; case C8: case C16: case C20: tmp = entry->v.cmplx.re; break; default: return( FALSE ); } entry->v.real = tmp; return( TRUE ); }
static ssl_value MechNum( unsigned select, ssl_value parm ) { switch( select ) { case 0: Num = SSL2INT( parm ); break; case 1: Num += SSL2INT( parm ); break; case 2: PushInt( Num ); break; case 3: /* need to check that top stack entry is an integer value here? */ Num = I32FetchTrunc( ExprSP->v.sint ); PopEntry(); break; } return( 0 ); }
OVL_EXTERN bool ConvNP4( stack_entry *entry, conv_class from ) { addr48_off tmp; switch( from ) { case U1: case U2: case U4: case U8: //NYI: 64 bit offsets tmp = U32FetchTrunc( entry->v.uint ); break; case I1: case I2: case I4: case I8: //NYI: 64 bit offsets tmp = I32FetchTrunc( entry->v.sint ); break; case NP2: case NP4: case FP4: case FP6: tmp = entry->v.addr.mach.offset; break; default: return( FALSE ); } if( (entry->flags & SF_CONST) && tmp == 0 ) { entry->v.addr = NilAddr; } else { entry->v.addr = DefAddrSpaceForAddr( Context.execution ); } entry->v.addr.mach.offset = tmp; return( TRUE ); }
OVL_EXTERN bool ConvC20( stack_entry *entry, conv_class from ) { xcomplex tmp; DToLD( 0.0, &tmp.im ); switch( from ) { case U1: case U2: case U4: case U8: //NYI: 64 bit support DToLD( U32FetchTrunc( entry->v.uint ), &tmp.re ); break; case I1: case I2: case I4: case I8: DToLD( I32FetchTrunc( entry->v.sint ), &tmp.re ); break; case F4: case F8: case F10: tmp.re = entry->v.real; break; case C8: case C16: case C20: tmp = entry->v.cmplx; break; default: return( false ); } entry->v.cmplx = tmp; return( true ); }
/* * ConvertTo -- convert 'entry' to the given 'class'. * 'entry' should be an rvalue. */ void ConvertTo( stack_entry *entry, type_kind k, type_modifier m, unsigned s ) { conv_class from; char *dest; if( s == 0 && k == TK_INTEGER ) { s = DefaultSize( DK_INT ); } if( entry->info.kind == k && entry->info.modifier == m && entry->info.size == s ) return; from = ConvIdx( &entry->info ); switch( from ) { case U1: U32ToU64( U8FetchTrunc( entry->v.uint ), &entry->v.uint ); break; case U2: U32ToU64( U16FetchTrunc( entry->v.uint ), &entry->v.uint ); break; case U4: U32ToU64( U32FetchTrunc( entry->v.uint ), &entry->v.uint ); break; case I1: I32ToI64( I8FetchTrunc( entry->v.uint ), &entry->v.uint ); break; case I2: I32ToI64( I16FetchTrunc( entry->v.uint ), &entry->v.uint ); break; case I4: I32ToI64( I32FetchTrunc( entry->v.uint ), &entry->v.uint ); break; case F4: DToLD( (float)LDToD( &entry->v.real ), &entry->v.real ); break; case F8: DToLD( (double)LDToD( &entry->v.real ), &entry->v.real ); break; case C8: DToLD( (float)LDToD( &entry->v.cmplx.re ), &entry->v.cmplx.re ); DToLD( (float)LDToD( &entry->v.cmplx.im ), &entry->v.cmplx.im ); break; case C16: DToLD( (double)LDToD( &entry->v.cmplx.re ), &entry->v.cmplx.re ); DToLD( (double)LDToD( &entry->v.cmplx.im ), &entry->v.cmplx.im ); break; case NP2: case FP4: entry->v.addr.mach.offset &= 0xffff; break; case STR: if( k != TK_STRING ) { Error( ERR_NONE, LIT( ERR_TYPE_CONVERSION ) ); } if( s > entry->info.size ) { /* have to expand string */ _ChkAlloc( dest, s, LIT( ERR_NO_MEMORY_FOR_EXPR ) ); memcpy( dest, entry->v.string.loc.e[0].u.p, entry->info.size ); memset( &dest[entry->info.size], ' ', s - entry->info.size ); if( AllocatedString( entry ) ) { _Free( entry->v.string.allocated ); } entry->v.string.allocated = dest; LocationCreate( &entry->v.string.loc, LT_INTERNAL, dest ); } break; default: break; } entry->info.kind = k; entry->info.modifier = m; entry->info.size = s; if( !ConvFunc[ ConvIdx( &entry->info ) ]( entry, from ) ) { Error( ERR_NONE, LIT( ERR_TYPE_CONVERSION ) ); } entry->th = NULL; }