59 lines
3.1 KiB
C
59 lines
3.1 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 "libc/calls/calls.h"
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#include "libc/log/log.h"
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#include "libc/runtime/mappings.h"
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#include "libc/stdio/stdio.h"
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STATIC_YOINK("ntoa");
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STATIC_YOINK("stoa");
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/**
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* Displays memory mappings in a way that's readable.
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*
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* It's readable because (1) map sizes are in bytes bytes with thousand
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* separators; (2) output is valid code; (3) memory addresses aren't
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* obfuscated; (4) we only need 8 hex digits to display each 64kb
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* granular 48-bit NexGen32e pointer; (5) ranges are inclusive; and (6)
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* gaps are made apparent.
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*/
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void showmappings(FILE *f) {
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size_t i, bytes, maptally, gaptally;
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maptally = 0;
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gaptally = 0;
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(fprintf)(f, "%s%zu%s\n", "_mm.i == ", _mm.i, ";");
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for (i = 0; i < _mm.i; ++i) {
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if (i && _mm.p[i].x != _mm.p[i - 1].y + 1) {
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bytes = _mm.p[i].x - _mm.p[i - 1].y - 1;
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bytes *= FRAMESIZE;
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gaptally += bytes;
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(fprintf)(f, "%s%,9zu%s\n", "/* ", bytes, " */");
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}
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bytes = _mm.p[i].y - _mm.p[i].x + 1;
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bytes *= FRAMESIZE;
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maptally += bytes;
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(fprintf)(f, "%s%3u%s0x%08x,0x%08x};%s%,9zu%s\n", "_mm.p[", i, "]=={",
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_mm.p[i].x, _mm.p[i].y, " /* ", bytes, " */");
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}
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(fprintf)(f, "%s%,zu%s%,zu%s\n", "/* ", maptally, " bytes mapped w/ ",
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gaptally, " bytes gapped */");
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fprintf(f, "\n");
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}
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