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utils: add bit count and bit count mask

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CTCaer 2021-06-08 05:53:58 +03:00
parent ce6926c36c
commit 539caf3d83
2 changed files with 24 additions and 0 deletions
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21
bdk/utils/util.c
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@ -30,6 +30,27 @@
extern volatile nyx_storage_t *nyx_str; extern volatile nyx_storage_t *nyx_str;
u8 bit_count(u32 val)
{
u8 cnt = 0;
for (u32 i = 0; i < 32; i++)
{
if ((val >> i) & 1)
cnt++;
}
return cnt;
}
u32 bit_count_mask(u8 bits)
{
u32 val = 0;
for (u32 i = 0; i < bits; i++)
val |= 1 << i;
return val;
}
u32 get_tmr_s() u32 get_tmr_s()
{ {
return RTC(APBDEV_RTC_SECONDS); return RTC(APBDEV_RTC_SECONDS);

3
bdk/utils/util.h
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@ -84,6 +84,9 @@ typedef struct _nyx_storage_t
emc_table_t mtc_table[10]; emc_table_t mtc_table[10];
} nyx_storage_t; } nyx_storage_t;
u8 bit_count(u32 val);
u32 bit_count_mask(u8 bits);
void exec_cfg(u32 *base, const cfg_op_t *ops, u32 num_ops); void exec_cfg(u32 *base, const cfg_op_t *ops, u32 num_ops);
u32 crc32_calc(u32 crc, const u8 *buf, u32 len); u32 crc32_calc(u32 crc, const u8 *buf, u32 len);