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#define _POSIX_C_SOURCE 200112L
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdint.h>
#include <assert.h>
#include <ctype.h>
#include <time.h>
#include <sched.h>
#include <arpa/inet.h>
#include <sys/time.h>
#include "cpu.h"
#include "pci.h"
#include "tools.h"
#include "error.h"
/*
void *memcpy128(void * dst, void const * src, size_t len) {
long pos = - (len>>2);
char * plDst = (char *) dst - 4 * pos;
char const * plSrc = (char const *) src - 4 * pos;
if (pos) {
__asm__ __volatile__ (
"1: \n\t"
"mov (%0,%2,4), %%edi \n\t"
"mov %%edi, (%1,%2,4) \n\t"
"inc %2 \n\t"
"jnz 1b \n\t"
:
: "r" (plSrc), "r" (plDst), "r" (pos)
: "%edi"
);
}
long pos = - ((len>>4)<<4);
char * plDst = (char *) dst - pos;
char const * plSrc = (char const *) src - pos;
if (pos) {
__asm__ __volatile__ (
"1: \n\t"
// "movdqa (%0,%2), %%xmm0 \n\t"
"mov (%0,%2), %%esi \n\t"
"movd %%esi, %%xmm0 \n\t"
"mov 4(%0,%2), %%esi \n\t"
"movd %%esi, %%xmm1 \n\t"
"mov 8(%0,%2), %%esi \n\t"
"movd %%esi, %%xmm2 \n\t"
"mov 12(%0,%2), %%esi \n\t"
"movd %%esi, %%xmm3 \n\t"
"pslldq $4, %%xmm1 \n\t"
"por %%xmm1, %%xmm0 \n\t"
"pslldq $8, %%xmm2 \n\t"
"por %%xmm2, %%xmm0 \n\t"
"pslldq $12, %%xmm3 \n\t"
"por %%xmm3, %%xmm0 \n\t"
"movntdq %%xmm0, (%1,%2) \n\t"
"add $16, %2 \n\t"
"jnz 1b \n\t"
:
: "r" (plSrc), "r" (plDst), "r" (pos)
: "%rsi"
);
}
len &= 0x3;
char * pcDst = (char *) plDst;
char const * pcSrc = (char const *) plSrc;
while (len--) {
*pcDst++ = *pcSrc++;
}
return (dst);
}
*/
void pcilib_memcpy4k_avx(void *dst, void *src, size_t size) {
size_t sse_size = (size / 512);
__asm__ __volatile__ (
"push %2 \n\t"
"mov $0, %%rax \n\t"
"1: \n\t"
"vmovdqa (%0,%%rax), %%ymm0 \n\t"
"vmovdqa 32(%0,%%rax), %%ymm1 \n\t"
"vmovdqa 64(%0,%%rax), %%ymm2 \n\t"
"vmovdqa 96(%0,%%rax), %%ymm3 \n\t"
"vmovdqa 128(%0,%%rax), %%ymm4 \n\t"
"vmovdqa 160(%0,%%rax), %%ymm5 \n\t"
"vmovdqa 192(%0,%%rax), %%ymm6 \n\t"
"vmovdqa 224(%0,%%rax), %%ymm7 \n\t"
"vmovdqa 256(%0,%%rax), %%ymm8 \n\t"
"vmovdqa 288(%0,%%rax), %%ymm9 \n\t"
"vmovdqa 320(%0,%%rax), %%ymm10 \n\t"
"vmovdqa 352(%0,%%rax), %%ymm11 \n\t"
"vmovdqa 384(%0,%%rax), %%ymm12 \n\t"
"vmovdqa 416(%0,%%rax), %%ymm13 \n\t"
"vmovdqa 448(%0,%%rax), %%ymm14 \n\t"
"vmovdqa 480(%0,%%rax), %%ymm15 \n\t"
"vmovntps %%ymm0, (%1,%%rax) \n\t"
"vmovntps %%ymm1, 32(%1,%%rax) \n\t"
"vmovntps %%ymm2, 64(%1,%%rax) \n\t"
"vmovntps %%ymm3, 96(%1,%%rax) \n\t"
"vmovntps %%ymm4, 128(%1,%%rax) \n\t"
"vmovntps %%ymm5, 160(%1,%%rax) \n\t"
"vmovntps %%ymm6, 192(%1,%%rax) \n\t"
"vmovntps %%ymm7, 224(%1,%%rax) \n\t"
"vmovntps %%ymm8, 256(%1,%%rax) \n\t"
"vmovntps %%ymm9, 288(%1,%%rax) \n\t"
"vmovntps %%ymm10, 320(%1,%%rax) \n\t"
"vmovntps %%ymm11, 352(%1,%%rax) \n\t"
"vmovntps %%ymm12, 384(%1,%%rax) \n\t"
"vmovntps %%ymm13, 416(%1,%%rax) \n\t"
"vmovntps %%ymm14, 448(%1,%%rax) \n\t"
"vmovntps %%ymm15, 480(%1,%%rax) \n\t"
"add $512, %%rax \n\t"
"dec %2 \n\t"
"jnz 1b \n\t"
"pop %2 \n\t"
"sfence"
:
: "p" (dst), "p" (src), "r" (sse_size)
: "%rax"
);
}
void pcilib_pagecpy(void *dst, void *src, size_t size) {
int gen = pcilib_get_cpu_gen();
if ((gen > 3)&&(size%4096==0)&&((uintptr_t)dst%32==0)&&((uintptr_t)src%32==0)) {
pcilib_memcpy4k_avx(dst, src, size);
} else
memcpy(dst, src, size);
}
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