| #ifndef LYNX_HELP_H__ |
| #define LYNX_HELP_H__ |
| |
| /* Internal macros */ |
| #define _F_START(f) (0 ? f) |
| #define _F_END(f) (1 ? f) |
| #define _F_SIZE(f) (1 + _F_END(f) - _F_START(f)) |
| #define _F_MASK(f) (((1 << _F_SIZE(f)) - 1) << _F_START(f)) |
| #define _F_NORMALIZE(v, f) (((v) & _F_MASK(f)) >> _F_START(f)) |
| #define _F_DENORMALIZE(v, f) (((v) << _F_START(f)) & _F_MASK(f)) |
| |
| /* Global macros */ |
| #define FIELD_GET(x, reg, field) \ |
| ( \ |
| _F_NORMALIZE((x), reg ## _ ## field) \ |
| ) |
| |
| #define FIELD_SET(x, reg, field, value) \ |
| ( \ |
| (x & ~_F_MASK(reg ## _ ## field)) \ |
| | _F_DENORMALIZE(reg ## _ ## field ## _ ## value, reg ## _ ## field) \ |
| ) |
| |
| #define FIELD_VALUE(x, reg, field, value) \ |
| ( \ |
| (x & ~_F_MASK(reg ## _ ## field)) \ |
| | _F_DENORMALIZE(value, reg ## _ ## field) \ |
| ) |
| |
| #define FIELD_CLEAR(reg, field) \ |
| ( \ |
| ~_F_MASK(reg ## _ ## field) \ |
| ) |
| |
| /* Field Macros */ |
| #define FIELD_START(field) (0 ? field) |
| #define FIELD_END(field) (1 ? field) |
| #define FIELD_SIZE(field) (1 + FIELD_END(field) - FIELD_START(field)) |
| #define FIELD_MASK(field) (((1 << (FIELD_SIZE(field)-1)) | ((1 << (FIELD_SIZE(field)-1)) - 1)) << FIELD_START(field)) |
| |
| static inline unsigned int absDiff(unsigned int a, unsigned int b) |
| { |
| if (a < b) |
| return b-a; |
| else |
| return a-b; |
| } |
| |
| /* n / d + 1 / 2 = (2n + d) / 2d */ |
| #define roundedDiv(num, denom) ((2 * (num) + (denom)) / (2 * (denom))) |
| #define MHz(x) ((x) * 1000000) |
| |
| |
| |
| |
| #endif |