98 lines
3.7 KiB
C
98 lines
3.7 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 │
|
|
│ │
|
|
│ This program is free software; you can redistribute it and/or modify │
|
|
│ it under the terms of the GNU General Public License as published by │
|
|
│ the Free Software Foundation; version 2 of the License. │
|
|
│ │
|
|
│ This program is distributed in the hope that it will be useful, but │
|
|
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
|
|
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
|
|
│ General Public License for more details. │
|
|
│ │
|
|
│ You should have received a copy of the GNU General Public License │
|
|
│ along with this program; if not, write to the Free Software │
|
|
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
|
|
│ 02110-1301 USA │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/macros.h"
|
|
#include "libc/math.h"
|
|
#include "libc/mem/mem.h"
|
|
#include "libc/str/str.h"
|
|
#include "tool/build/lib/flags.h"
|
|
#include "tool/build/lib/machine.h"
|
|
|
|
#define LDBL 3
|
|
#define RINT 0
|
|
|
|
static void ResetFpu(struct Machine *m) {
|
|
long i;
|
|
long double fval;
|
|
fval = -NAN;
|
|
m->fpu.sw = 0;
|
|
m->fpu.tw = -1;
|
|
m->fpu.cw = 0;
|
|
m->fpu.im = true;
|
|
m->fpu.dm = true;
|
|
m->fpu.zm = true;
|
|
m->fpu.om = true;
|
|
m->fpu.um = true;
|
|
m->fpu.pm = true;
|
|
m->fpu.pc = LDBL;
|
|
m->fpu.rc = RINT;
|
|
for (i = 0; i < ARRAYLEN(m->fpu.st); ++i) {
|
|
memcpy(&m->fpu.st[i], &fval, sizeof(fval));
|
|
}
|
|
}
|
|
|
|
static void ResetSse(struct Machine *m) {
|
|
m->sse.mxcsr = 0;
|
|
m->sse.daz = false;
|
|
m->sse.im = true;
|
|
m->sse.dm = true;
|
|
m->sse.zm = true;
|
|
m->sse.om = true;
|
|
m->sse.um = true;
|
|
m->sse.pm = true;
|
|
m->sse.rc = RINT;
|
|
m->sse.ftz = false;
|
|
memset(m->xmm, 0, sizeof(m->xmm));
|
|
}
|
|
|
|
void ResetInstructionCache(struct Machine *m) {
|
|
memset(m->icache, -1, sizeof(m->icache));
|
|
}
|
|
|
|
void ResetCpu(struct Machine *m) {
|
|
m->faultaddr = 0;
|
|
m->stashsize = 0;
|
|
m->stashaddr = 0;
|
|
m->writeaddr = 0;
|
|
m->readaddr = 0;
|
|
m->writesize = 0;
|
|
m->readsize = 0;
|
|
m->flags = SetFlag(m->flags, FLAGS_DF, false);
|
|
m->flags = SetFlag(m->flags, FLAGS_CF, false);
|
|
m->flags = SetFlag(m->flags, FLAGS_ZF, false);
|
|
m->flags = SetFlag(m->flags, FLAGS_SF, false);
|
|
m->flags = SetFlag(m->flags, FLAGS_IF, true);
|
|
m->flags = SetFlag(m->flags, FLAGS_F1, true);
|
|
m->flags = SetFlag(m->flags, FLAGS_F0, false);
|
|
m->flags = SetFlag(m->flags, FLAGS_IOPL, 3);
|
|
memset(m->reg, 0, sizeof(m->reg));
|
|
memset(m->bofram, 0, sizeof(m->bofram));
|
|
memset(&m->freelist, 0, sizeof(m->freelist));
|
|
ResetSse(m);
|
|
ResetFpu(m);
|
|
}
|
|
|
|
void ResetTlb(struct Machine *m) {
|
|
m->tlbindex = 0;
|
|
memset(m->tlb, 0, sizeof(m->tlb));
|
|
m->codevirt = 0;
|
|
m->codehost = NULL;
|
|
}
|