interesting
/
riscv-openocd
mirror of https://github.com/riscv/riscv-openocd.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

improve buf_set_ones 

Use memset instead of loop. Improve types, using void * and unsigned.
This commit is contained in:
Zachary T Welch 2009-11-14 10:41:35 -08:00
parent d09e308130
commit d8d8c5d8c3
2 changed files with 11 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/helper/binarybuffer.c
View File

@ -113,17 +113,17 @@ bool buf_cmp_mask(const void *_buf1, const void *_buf2,
} }
uint8_t* buf_set_ones(uint8_t *buf, int count) void* buf_set_ones(void *_buf, unsigned size)
{ {
for (unsigned i = 0, num_bytes = CEIL(count, 8); i < num_bytes; i++) uint8_t *buf = _buf;
{ if (!buf)
if (count >= 8) return NULL;
buf[i] = 0xff;
else
buf[i] = (1 << count) - 1;
count -= 8; memset(buf, 0xff, size / 8);
}
unsigned trailing_bits = size % 8;
if (trailing_bits)
buf[size / 8] = (1 << trailing_bits) - 1;
return buf; return buf;
} }

3
src/helper/binarybuffer.h
View File

@ -76,7 +76,8 @@ bool buf_cmp_mask(const void *buf1, const void *buf2,
void* buf_cpy(const void *from, void *to, unsigned size); void* buf_cpy(const void *from, void *to, unsigned size);
uint8_t* buf_set_ones(uint8_t *buf, int count); void* buf_set_ones(void *buf, unsigned count);
uint8_t* buf_set_buf(const uint8_t *src, int src_start, uint8_t* buf_set_buf(const uint8_t *src, int src_start,
uint8_t *dst, int dst_start, int len); uint8_t *dst, int dst_start, int len);