AM64x MCU+ SDK  08.02.00
tisci_bitops.h
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54 #ifndef BITOPS_H
55 #define BITOPS_H
56 
57 
59 #define TISCI_BIT(n) (((uint32_t) 1U) << (n))
60 
61 
62 static inline uint32_t get_field(uint32_t val, uint32_t end, uint32_t start);
63 static inline uint32_t set_field(uint32_t tgt, uint32_t end, uint32_t start, uint32_t val);
64 static inline uint32_t get_mask(uint32_t end, uint32_t start);
65 
78 static inline uint32_t get_mask(uint32_t end, uint32_t start)
79 {
80  return ((1U << (end - start + 1)) - 1U) << start;
81 }
82 
92 static inline uint32_t get_field(uint32_t val, uint32_t end, uint32_t start)
93 {
94  uint32_t mask = get_mask(end, start);
95 
96  return (val & mask) >> start;
97 }
98 
110 static inline uint32_t set_field(uint32_t tgt, uint32_t end, uint32_t start, uint32_t val)
111 {
112  uint32_t ret = 0U;
113  uint32_t mask = get_mask(end, start);
114 
115  ret = (tgt & (~mask));
116 
117  ret = (ret | ((val << start) & mask));
118 
119  return ret;
120 }
121 
122 #endif
123 
get_field
static uint32_t get_field(uint32_t val, uint32_t end, uint32_t start)
extract the specified bit field from a 32 bit unsigned integer.
Definition: tisci_bitops.h:92
set_field
static uint32_t set_field(uint32_t tgt, uint32_t end, uint32_t start, uint32_t val)
set the specified bit field from a 32 bit unsigned integer to provided value
Definition: tisci_bitops.h:110
get_mask
static uint32_t get_mask(uint32_t end, uint32_t start)
Generate a mask for the give bit field [end:start].
Definition: tisci_bitops.h:78