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rose: add new instruction CHECK_MASK_32

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This is a specialisation of the "lookaround" code.
This commit is contained in:
Xu, Chi
2016-07-22 03:35:53 +08:00
committed by Matthew Barr
parent 8be6c8b2ca
commit b96d5c23d1
10 changed files with 545 additions and 3 deletions
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41
src/rose/validate_mask.h
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@@ -26,7 +26,22 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef VALIDATE_MASK_H
#define VALIDATE_MASK_H
#include "ue2common.h"
#include "util/simd_utils.h"
#if defined(DEBUG)
static
void validateMask32Print(const u8 *mask) {
int i;
for (i = 0; i < 32; i++) {
printf("%02x", mask[i]);
}
printf("\n");
}
#endif
// check positive bytes in cmp_result.
// return one if the check passed, zero otherwise.
@@ -75,3 +90,29 @@ int validateMask(u64a data, u64a valid_data_mask, u64a and_mask,
return 0;
}
}
static really_inline
int validateMask32(const m256 data, const u32 valid_data_mask,
const m256 and_mask, const m256 cmp_mask,
const u32 neg_mask) {
m256 cmp_result_256 = eq256(and256(data, and_mask), cmp_mask);
u32 cmp_result = ~movemask256(cmp_result_256);
#ifdef DEBUG
DEBUG_PRINTF("data\n");
validateMask32Print((const u8 *)&data);
DEBUG_PRINTF("cmp_result\n");
validateMask32Print((const u8 *)&cmp_result_256);
#endif
DEBUG_PRINTF("cmp_result %08x neg_mask %08x\n", cmp_result, neg_mask);
DEBUG_PRINTF("valid_data_mask %08x\n", valid_data_mask);
if ((cmp_result & valid_data_mask) == (neg_mask & valid_data_mask)) {
DEBUG_PRINTF("checkCompareResult32 passed\n");
return 1;
} else {
DEBUG_PRINTF("checkCompareResult32 failed\n");
return 0;
}
}
#endif