+++ /dev/null
-#include <stdio.h>
-#include <stdint.h>
-#include <stdlib.h>
-//#define MMX_TRACE
-#include "mmx.h"
-
-static inline int clip2(int v, int mn, int mx) {
- if( v > mx ) return mx;
- if( v < mn ) return mn;
- return v;
-}
-
-static inline uint8_t clip(int32_t v) {
- return ((uint8_t)v) == v ? v : clip2(v,0,255);
-}
-
-#define m_(v) (*(mmx_t*)(((long long *)(v))))
-
-int main(int ac, char **av)
-{
- int i, j, k, n;
- unsigned char dat0[8] = { 0x01, 0xf2, 0x03, 0x04, 0x05, 0x06, 0xf7, 0x08 };
- long long *datp = (long long *)&dat0;
- int16_t dat1[8] = { 0x10, 0x20, -0x130, -0x140, 0x50, -0x160, -0x170, 0x80 };
- volatile uint8_t *rfp = dat0;
- volatile int16_t *bp = dat1;
- unsigned char ans1[8], ans2[8];
-
- n = 0;
- for( i=-32768; i<32768; ++i ) {
- j = 0;
- while( j < 256 ) {
- for( k=0; k<8; ++k ) {
- dat0[k] = i;
- dat1[k] = j++;
- }
- movq_m2r(m_(&rfp[0]),mm1); /* rfp[0..7] */
- pxor_r2r(mm3,mm3);
- pxor_r2r(mm4,mm4);
- movq_m2r(m_(&bp[0]),mm5); /* bp[0..3] */
- movq_r2r(mm1,mm2);
- movq_m2r(m_(&bp[4]),mm6); /* bp[4..7] */
- punpcklbw_r2r(mm3,mm1); /* rfp[0,2,4,6] */
- punpckhbw_r2r(mm3,mm2); /* rfp[1,3,5,7] */
- paddsw_r2r(mm5,mm1); /* bp[0..3] */
- paddsw_r2r(mm6,mm2); /* bp[4..7] */
- pcmpgtw_r2r(mm1,mm3);
- pcmpgtw_r2r(mm2,mm4);
- pandn_r2r(mm1,mm3);
- pandn_r2r(mm2,mm4);
- packuswb_r2r(mm4,mm3);
- movq_r2m(mm3,m_(&ans1[0]));
- emms();
-
- ans2[0] = clip(bp[0] + rfp[0]);
- ans2[1] = clip(bp[1] + rfp[1]);
- ans2[2] = clip(bp[2] + rfp[2]);
- ans2[3] = clip(bp[3] + rfp[3]);
- ans2[4] = clip(bp[4] + rfp[4]);
- ans2[5] = clip(bp[5] + rfp[5]);
- ans2[6] = clip(bp[6] + rfp[6]);
- ans2[7] = clip(bp[7] + rfp[7]);
-
- if( *(uint64_t *)&ans1[0] != *(uint64_t *)&ans2[0] )
- {
- printf(" i=%5d %02x %02x %02x %02x %02x %02x %02x %02x\n", i,
- ans1[0], ans1[1], ans1[2], ans1[3], ans1[4], ans1[5], ans1[6], ans1[7]);
- printf(" j=%5d %02x %02x %02x %02x %02x %02x %02x %02x\n", j,
- ans2[0], ans2[1], ans2[2], ans2[3], ans2[4], ans2[5], ans2[6], ans2[7]);
- // exit(0);
- }
- n += 8;
- }
- }
-
- printf("n=%d\n",n);
- return 0;
-}