cosmopolitan/tool/build/lib/init.c

50 lines
2.6 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 "tool/build/lib/machine.h"
static void InitRegisterBytePointers(struct Machine *m) {
unsigned i, j, k;
for (i = 0; i < 2; ++i) {
for (j = 0; j < 2; ++j) {
for (k = 0; k < 8; ++k) {
if (i) {
m->beg[i << 4 | j << 3 | k] = m->reg[j << 3 | k];
} else {
m->beg[i << 4 | j << 3 | k] = &m->reg[k & 0b11][(k & 0b100) >> 2];
}
}
}
}
}
static void InitRegisterXmmPointers(struct Machine *m) {
unsigned i, j;
for (i = 0; i < 2; ++i) {
for (j = 0; j < 8; ++j) {
m->veg[i << 3 | j] = m->xmm[i][j];
}
}
}
void InitMachine(struct Machine *m) {
InitRegisterBytePointers(m);
InitRegisterXmmPointers(m);
}