73 lines
3.2 KiB
C
73 lines
3.2 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "tool/build/lib/endian.h"
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#include "tool/build/lib/machine.h"
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void OpCpuid(struct Machine *m) {
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uint32_t ax, bx, cx, dx;
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ax = 0;
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bx = 0;
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cx = 0;
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dx = 0;
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switch (Read32(m->ax)) {
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case 0:
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case 0x80000000:
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ax = 7;
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bx = 'G' | 'e' << 8 | 'n' << 16 | 'u' << 24;
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cx = 'i' | 'n' << 8 | 'e' << 16 | 'C' << 24;
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dx = 'o' | 's' << 8 | 'm' << 16 | 'o' << 24;
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break;
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case 1:
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cx |= 1 << 0; /* sse3 */
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cx |= 0 << 1; /* pclmulqdq */
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cx |= 1 << 9; /* ssse3 */
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cx |= 1 << 23; /* popcnt */
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cx |= 0 << 30; /* rdrnd */
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cx |= 0 << 25; /* aes */
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dx |= 1 << 0; /* fpu */
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dx |= 1 << 4; /* tsc */
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dx |= 1 << 6; /* pae */
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dx |= 1 << 8; /* cmpxchg8b */
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dx |= 1 << 15; /* cmov */
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dx |= 1 << 19; /* clflush */
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dx |= 1 << 23; /* mmx */
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dx |= 1 << 25; /* sse */
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dx |= 1 << 26; /* sse2 */
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break;
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case 7:
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bx |= 1 << 9; /* erms */
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break;
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case 0x80000001:
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cx |= 1 << 0; /* lahf/sahf */
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dx |= 1 << 11; /* syscall */
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dx |= 1 << 29; /* long mode */
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break;
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case 0x80000007:
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dx |= 1 << 8; /* invtsc */
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break;
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default:
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break;
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}
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Write64(m->ax, ax);
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Write64(m->bx, bx);
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Write64(m->cx, cx);
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Write64(m->dx, dx);
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}
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