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dis6502/trace_queue.c
2018-03-08 15:32:24 -07:00

61 lines
1.5 KiB
C

/*
* dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
*
* Copyright 2000-2018 Eric Smith <spacewar@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. Note that permission is
* not granted to redistribute this program under the terms of any
* other version of the General Public 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., 59 Temple Place, Suite 330, Boston, MA 02111 USA
*/
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include "dis.h"
#define MAX_TRACE_QUEUE 65536
static int trace_queue_count = 0;
static addr_t trace_queue_val [MAX_TRACE_QUEUE];
void init_trace_queue (void)
{
trace_queue_count = 0;
}
int trace_queue_empty (void)
{
return (trace_queue_count == 0);
}
void push_trace_queue (addr_t addr)
{
if (trace_queue_count >= MAX_TRACE_QUEUE)
crash ("trace queue overflow");
trace_queue_val [trace_queue_count++] = addr;
}
addr_t pop_trace_queue (void)
{
if (trace_queue_count == 0)
crash ("trace queue empty");
return (trace_queue_val [--trace_queue_count]);
}