54 lines
2.8 KiB
C
54 lines
2.8 KiB
C
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/*-*- 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/emubin/metalsha256.h"
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#define SHA256_BLOCK_SIZE 32
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#define OUTB(PORT, BYTE) asm volatile("outb\t%b1,%0" : : "N"(PORT), "a"(BYTE))
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#define INW(PORT) \
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({ \
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int Word; \
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asm volatile("in\t%1,%0" : "=a"(Word) : "N"(PORT)); \
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Word; \
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})
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static void PrintHexBytes(int n, const uint8_t p[n]) {
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int i;
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for (i = 0; i < n; ++i) {
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OUTB(0xE9, "0123456789abcdef"[(p[i] >> 4) & 15]);
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OUTB(0xE9, "0123456789abcdef"[(p[i] >> 0) & 15]);
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}
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OUTB(0xE9, '\n');
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}
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int main(int argc, char *argv[]) {
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int rc;
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uint8_t hash[32], buf[1];
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struct MetalSha256Ctx ctx;
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MetalSha256Init(&ctx);
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while ((rc = INW(0xE9)) != -1) {
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buf[0] = rc;
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MetalSha256Update(&ctx, buf, sizeof(buf));
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}
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MetalSha256Final(&ctx, hash);
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PrintHexBytes(sizeof(hash), hash);
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return 0;
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}
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