89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/*-
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* Copyright (c) 1999 Global Technology Associates, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <stddef.h>
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#include "kgzldr.h"
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#define MEMSIZ 0x8000 /* Memory pool size */
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int kgz_con; /* Console control */
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static size_t memtot; /* Memory allocated: bytes */
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static u_int memcnt; /* Memory allocated: blocks */
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/*
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* Library functions required by inflate().
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*/
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/*
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* Allocate memory block.
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*/
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unsigned char *
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kzipmalloc(int size)
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{
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static u_char mem[MEMSIZ];
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void *ptr;
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if (memtot + size > MEMSIZ)
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return NULL;
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ptr = mem + memtot;
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memtot += size;
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memcnt++;
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return ptr;
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}
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/*
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* Free allocated memory block.
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*/
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void
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kzipfree(void *ptr)
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{
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memcnt--;
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if (!memcnt)
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memtot = 0;
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}
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/*
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* Write a string to the console.
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*/
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void
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putstr(const char *str)
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{
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int c;
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while ((c = *str++)) {
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if (kgz_con & KGZ_CRT)
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crt_putchr(c);
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if (kgz_con & KGZ_SIO)
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sio_putchr(c);
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}
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}
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