59 lines
2.7 KiB
C
59 lines
2.7 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/nexgen32e/rdtsc.h"
|
|
#include "libc/sysv/consts/clock.h"
|
|
#include "libc/time/time.h"
|
|
#include "tool/build/lib/endian.h"
|
|
#include "tool/build/lib/modrm.h"
|
|
#include "tool/build/lib/time.h"
|
|
|
|
/**
|
|
* @fileoverview i am the timelorde
|
|
*/
|
|
|
|
void OpPause(struct Machine *m, uint32_t rde) {
|
|
sched_yield();
|
|
}
|
|
|
|
void OpRdtsc(struct Machine *m, uint32_t rde) {
|
|
uint64_t c;
|
|
struct timespec ts;
|
|
clock_gettime(CLOCK_MONOTONIC, &ts);
|
|
c = ts.tv_sec * 1000000000 + ts.tv_nsec;
|
|
Write64(m->ax, (c >> 000) & 0xffffffff);
|
|
Write64(m->dx, (c >> 040) & 0xffffffff);
|
|
}
|
|
|
|
static int64_t GetTscAux(struct Machine *m) {
|
|
uint32_t core, node;
|
|
core = 0;
|
|
node = 0;
|
|
return (node & 0xfff) << 12 | (core & 0xfff);
|
|
}
|
|
|
|
void OpRdtscp(struct Machine *m, uint32_t rde) {
|
|
OpRdtsc(m, rde);
|
|
Write64(m->cx, GetTscAux(m));
|
|
}
|
|
|
|
void OpRdpid(struct Machine *m, uint32_t rde) {
|
|
Write64(RegRexbRm(m, rde), GetTscAux(m));
|
|
}
|