\u0418\u043c\u0435\u0435\u0442\u0441\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u044f c++ \u0441 \u0430\u0441\u0435\u043c\u0431\u043b\u0435\u0440\u043d\u043e\u0439 \u0432\u0441\u0442\u0430\u0432\u043a\u043e\u0439:<\/p>\n
void memcpyMMX(void* dst, const void* src, int nbytes) {
\tint remainingBytes = nbytes;<\/p>\n
\tif (nbytes > 64) {
\t\tasm (
\t\t\t\t"movl %esi, srcnt"
\t\t\t\t"movl %edi, dstnt"
\t\t\t\t"movl %ecx, nbytesnt"
\t\t\t\t"shrl %ecx, $6nn" \/\/ 64 bytes per iteration<\/p>\n
\t\t\t\t"loop1:nt"
\t\t\t\t"movq %mm1, 0(%ESI)nt" \/\/ Read in source data
\t\t\t\t"movq %mm2, 8(%ESI)nt"
\t\t\t\t"movq %mm3, 16(%ESI)nt"
\t\t\t\t"movq %mm4, 24(%ESI)nt"
\t\t\t\t"movq %mm5, 32(%ESI)nt"
\t\t\t\t"movq %mm6, 40(%ESI)nt"
\t\t\t\t"movq %mm7, 48(%ESI)nt"
\t\t\t\t"movq %mm0, 56(%ESI)nnt"<\/p>\n
\t\t\t\t"movntq 0(%EDI), %mm1nt" \/\/ Non-temporal stores
\t\t\t\t"movntq 8(%EDI), %mm2nt"
\t\t\t\t"movntq 16(%EDI), %mm3nt"
\t\t\t\t"movntq 24(%EDI), %mm4nt"
\t\t\t\t"movntq 32(%EDI), %mm5nt"
\t\t\t\t"movntq 40(%EDI), %mm6nt"
\t\t\t\t"movntq 48(%EDI), %mm7nt"
\t\t\t\t"movntq 56(%EDI), %mm0nnt"<\/p>\n
\t\t\t\t"addl %esi, $64nt"
\t\t\t\t"addl %edi, $64nt"
\t\t\t\t"dec %ecxnt"
\t\t\t\t"jnz loop1nnt"<\/p>\n
\t\t\t\t"emms"
\t\t);
\t\tremainingBytes -= ((nbytes >> 6) << 6);
\t}<\/p>\n
\tif (remainingBytes > 0) {
\t\t\/\/ Memcpy the rest
\t\tmemcpy((uint8*) dst + (nbytes — remainingBytes),
\t\t\t\t(const uint8*) src + (nbytes — remainingBytes), remainingBytes);
\t}
}<\/p>\n
\u041a\u043e\u043c\u043f\u0438\u043b\u0438\u0440\u0443\u044e \u0441 MinGW, \u0432\u044b\u0434\u0430\u0435\u0442 \u043e\u0448\u0438\u0431\u043a\u0438:
\toperand type mismatch for `movntq’
\toperand type mismatch for `shr’
\toperand type mismatch for `add’<\/p>\n
\u041f\u043e\u043c\u043e\u0433\u0438\u0442\u0435, \u043f\u043e\u0436\u0430\u043b\u0443\u0439\u0441\u0442\u0430, \u0433\u0434\u0435 \u0447\u0442\u043e \u043d\u0435 \u0442\u0430\u043a? <\/p>\n","protected":false},"excerpt":{"rendered":"
\u0418\u043c\u0435\u0435\u0442\u0441\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u044f c++ \u0441 \u0430\u0441\u0435\u043c\u0431\u043b\u0435\u0440\u043d\u043e\u0439 \u0432\u0441\u0442\u0430\u0432\u043a\u043e\u0439: void memcpyMMX(void* dst, const void* src, int nbytes) { int remainingBytes = nbytes; if (nbytes > 64) { asm ( "movl %esi, srcnt" "movl %edi, dstnt" "movl %ecx, nbytesnt" "shrl %ecx, $6nn" \/\/ 64 bytes per iteration "loop1:nt" "movq %mm1, 0(%ESI)nt" \/\/ Read in source data "movq %mm2, 8(%ESI)nt" […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1435],"tags":[940,1467,1460],"class_list":["post-93445","post","type-post","status-publish","format-standard","hentry","category-windows","tag-asm","tag-assembler","tag-programmirovanie"],"_links":{"self":[{"href":"https:\/\/blagovest.org.ru\/index.php?rest_route=\/wp\/v2\/posts\/93445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blagovest.org.ru\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blagovest.org.ru\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blagovest.org.ru\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blagovest.org.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=93445"}],"version-history":[{"count":0,"href":"https:\/\/blagovest.org.ru\/index.php?rest_route=\/wp\/v2\/posts\/93445\/revisions"}],"wp:attachment":[{"href":"https:\/\/blagovest.org.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=93445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blagovest.org.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=93445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blagovest.org.ru\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=93445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}