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Packing ecma_object_t to 8 bytes.

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This commit is contained in:
Ruben Ayrapetyan
2014-08-29 17:38:05 +04:00
parent 8e14f32806
commit 1d02085dc6
8 changed files with 364 additions and 180 deletions
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src/globals.h
-53
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@@ -164,57 +164,4 @@ extern void __noreturn jerry_exit (jerry_status_t code);
#define JERRY_MIN(v1, v2) ((v1 < v2) ? v1 : v2)
#define JERRY_MAX(v1, v2) ((v1 < v2) ? v2 : v1)
/**
* Bit-fields
*/
inline uint32_t jerry_extract_bit_field (uint32_t value, uint32_t lsb,
uint32_t width);
inline uint32_t jerry_set_bit_field_value (uint32_t value, uint32_t bit_field_value,
uint32_t lsb, uint32_t width);
/**
* Extract a bit-field from the integer.
*
* @return bit-field's value
*/
inline uint32_t
jerry_extract_bit_field (uint32_t
container, /**< container to extract bit-field from */
uint32_t lsb, /**< least significant bit of the value
* to be extracted */
uint32_t width) /**< width of the bit-field to be extracted */
{
JERRY_ASSERT (lsb < JERRY_BITSINBYTE * sizeof (uint32_t));
JERRY_ASSERT ((lsb + width) <= JERRY_BITSINBYTE * sizeof (uint32_t));
uint32_t shifted_value = container >> lsb;
uint32_t bit_field_mask = (1u << width) - 1;
return (shifted_value & bit_field_mask);
} /* jerry_extract_bit_field */
/**
* Extract a bit-field from the integer.
*
* @return bit-field's value
*/
inline uint32_t
jerry_set_bit_field_value (uint32_t
container, /**< container to insert bit-field to */
uint32_t new_bit_field_value, /**< value of bit-field to insert */
uint32_t lsb, /**< least significant bit of the value
* to be extracted */
uint32_t width) /**< width of the bit-field to be extracted */
{
JERRY_ASSERT (lsb < JERRY_BITSINBYTE * sizeof (uint32_t));
JERRY_ASSERT ((lsb + width) <= JERRY_BITSINBYTE * sizeof (uint32_t));
JERRY_ASSERT (new_bit_field_value <= (1u << width));
uint32_t bit_field_mask = (1u << width) - 1;
uint32_t shifted_bit_field_mask = bit_field_mask << lsb;
uint32_t shifted_new_bit_field_value = new_bit_field_value << lsb;
return (container & ~shifted_bit_field_mask) | shifted_new_bit_field_value;
} /* jerry_set_bit_field_value */
#endif /* !JERRY_GLOBALS_H */