diff options
Diffstat (limited to 'source/include/acmacros.h')
| -rw-r--r-- | source/include/acmacros.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/source/include/acmacros.h b/source/include/acmacros.h index ecb8050b39cb..d2f44a34ecb6 100644 --- a/source/include/acmacros.h +++ b/source/include/acmacros.h @@ -273,9 +273,21 @@ * Bit positions start at zero. * MASK_BITS_ABOVE creates a mask starting AT the position and above * MASK_BITS_BELOW creates a mask starting one bit BELOW the position + * MASK_BITS_ABOVE/BELOW accpets a bit offset to create a mask + * MASK_BITS_ABOVE/BELOW_32/64 accpets a bit width to create a mask + * Note: The ACPI_INTEGER_BIT_SIZE check is used to bypass compiler + * differences with the shift operator */ #define ACPI_MASK_BITS_ABOVE(position) (~((ACPI_UINT64_MAX) << ((UINT32) (position)))) #define ACPI_MASK_BITS_BELOW(position) ((ACPI_UINT64_MAX) << ((UINT32) (position))) +#define ACPI_MASK_BITS_ABOVE_32(width) ((UINT32) ACPI_MASK_BITS_ABOVE(width)) +#define ACPI_MASK_BITS_BELOW_32(width) ((UINT32) ACPI_MASK_BITS_BELOW(width)) +#define ACPI_MASK_BITS_ABOVE_64(width) ((width) == ACPI_INTEGER_BIT_SIZE ? \ + ACPI_UINT64_MAX : \ + ACPI_MASK_BITS_ABOVE(width)) +#define ACPI_MASK_BITS_BELOW_64(width) ((width) == ACPI_INTEGER_BIT_SIZE ? \ + (UINT64) 0 : \ + ACPI_MASK_BITS_BELOW(width)) /* Bitfields within ACPI registers */ @@ -291,10 +303,10 @@ /* Generic bitfield macros and masks */ #define ACPI_GET_BITS(SourcePtr, Position, Mask) \ - ((*SourcePtr >> Position) & Mask) + ((*(SourcePtr) >> (Position)) & (Mask)) #define ACPI_SET_BITS(TargetPtr, Position, Mask, Value) \ - (*TargetPtr |= ((Value & Mask) << Position)) + (*(TargetPtr) |= (((Value) & (Mask)) << (Position))) #define ACPI_1BIT_MASK 0x00000001 #define ACPI_2BIT_MASK 0x00000003 |