29 lines
728 B
C
29 lines
728 B
C
#include <stdio.h>
|
|
#include <assert.h>
|
|
|
|
#define LUT_BIN "lut.bin"
|
|
|
|
int main() {
|
|
FILE *fp = fopen(LUT_BIN, "w");
|
|
assert(fp != NULL);
|
|
|
|
#define gen_table(name, row, col, entry_size, expr) do { \
|
|
for (int j = 0; j < row; j ++) { \
|
|
for (int i = 0; i < col; i ++) { \
|
|
unsigned res = (expr); \
|
|
fwrite(&res, entry_size, 1, fp); \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
gen_table(_and8_table, 256, 256, 1, j & i);
|
|
gen_table(_or8_table, 256, 256, 1, j | i);
|
|
gen_table(_xor8_table, 256, 256, 1, j ^ i);
|
|
gen_table(_sll8_table, 32, 256, 4, (unsigned)i << j);
|
|
gen_table(_srl8_table, 32, 256, 4, ((unsigned)i << 24) >> j);
|
|
gen_table(_sra8_table, 32, 256, 4, (int)((unsigned)i << 24) >> j);
|
|
|
|
fclose(fp);
|
|
|
|
return 0;
|
|
}
|