| 1 | package flate
|
|---|
| 2 |
|
|---|
| 3 | const (
|
|---|
| 4 | // Masks for shifts with register sizes of the shift value.
|
|---|
| 5 | // This can be used to work around the x86 design of shifting by mod register size.
|
|---|
| 6 | // It can be used when a variable shift is always smaller than the register size.
|
|---|
| 7 |
|
|---|
| 8 | // reg8SizeMaskX - shift value is 8 bits, shifted is X
|
|---|
| 9 | reg8SizeMask8 = 7
|
|---|
| 10 | reg8SizeMask16 = 15
|
|---|
| 11 | reg8SizeMask32 = 31
|
|---|
| 12 | reg8SizeMask64 = 63
|
|---|
| 13 |
|
|---|
| 14 | // reg16SizeMaskX - shift value is 16 bits, shifted is X
|
|---|
| 15 | reg16SizeMask8 = reg8SizeMask8
|
|---|
| 16 | reg16SizeMask16 = reg8SizeMask16
|
|---|
| 17 | reg16SizeMask32 = reg8SizeMask32
|
|---|
| 18 | reg16SizeMask64 = reg8SizeMask64
|
|---|
| 19 |
|
|---|
| 20 | // reg32SizeMaskX - shift value is 32 bits, shifted is X
|
|---|
| 21 | reg32SizeMask8 = reg8SizeMask8
|
|---|
| 22 | reg32SizeMask16 = reg8SizeMask16
|
|---|
| 23 | reg32SizeMask32 = reg8SizeMask32
|
|---|
| 24 | reg32SizeMask64 = reg8SizeMask64
|
|---|
| 25 |
|
|---|
| 26 | // reg64SizeMaskX - shift value is 64 bits, shifted is X
|
|---|
| 27 | reg64SizeMask8 = reg8SizeMask8
|
|---|
| 28 | reg64SizeMask16 = reg8SizeMask16
|
|---|
| 29 | reg64SizeMask32 = reg8SizeMask32
|
|---|
| 30 | reg64SizeMask64 = reg8SizeMask64
|
|---|
| 31 |
|
|---|
| 32 | // regSizeMaskUintX - shift value is uint, shifted is X
|
|---|
| 33 | regSizeMaskUint8 = reg8SizeMask8
|
|---|
| 34 | regSizeMaskUint16 = reg8SizeMask16
|
|---|
| 35 | regSizeMaskUint32 = reg8SizeMask32
|
|---|
| 36 | regSizeMaskUint64 = reg8SizeMask64
|
|---|
| 37 | )
|
|---|
