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intel/eu: Define SET_BITS helper more easily reusable than SET_FIELD.

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Allows to specify a bitfield based on its upper and lower bounds
instead of a symbolic field definition, kind of what the current
GET_BITS macro is to GET_FIELD.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Francisco Jerez
2018-06-25 12:06:50 -07:00
parent d0f589a55b
commit 20b962232b
1 changed files with 7 additions and 0 deletions
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7
src/intel/compiler/brw_eu_defines.h
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@@ -46,6 +46,13 @@
fieldval & field ## _MASK; \ fieldval & field ## _MASK; \
}) })
#define SET_BITS(value, high, low) \
({ \
const uint32_t fieldval = (value) << (low); \
assert((fieldval & ~INTEL_MASK(high, low)) == 0); \
fieldval & INTEL_MASK(high, low); \
})
#define GET_BITS(data, high, low) ((data & INTEL_MASK((high), (low))) >> (low)) #define GET_BITS(data, high, low) ((data & INTEL_MASK((high), (low))) >> (low))
#define GET_FIELD(word, field) (((word) & field ## _MASK) >> field ## _SHIFT) #define GET_FIELD(word, field) (((word) & field ## _MASK) >> field ## _SHIFT)