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dgisselq |
///////////////////////////////////////////////////////////////////////////////
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//
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// Filename: zipdbg.cpp
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//
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// Project: Zip CPU -- a small, lightweight, RISC CPU soft core
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//
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// Purpose: Provide a simple debugger for the Zip CPU. This allows you
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// to halt the CPU, examine the registers, and even single step
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// the CPU. It's not fully functional yet, as I would like to implement
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// breakpoints and the ability to modify registers, but it's a good
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// start.
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//
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// Commands while in the debugger are:
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// 'r' - RESET the CPU
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// 'g' - Go. Release the CPU and exit the debugger.
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// 'q' - Quit. Leave the debugger, while leaving the CPU halted.
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// 's' - Single Step. Allows the CPU to advance by one instruction.
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//
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//
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//
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// Creator: Dan Gisselquist, Ph.D.
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dgisselq |
// Gisselquist Tecnhology, LLC
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dgisselq |
//
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///////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2015, Gisselquist Technology, LLC
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//
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// This program is free software (firmware): you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as published
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// by the Free Software Foundation, either version 3 of the License, or (at
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// your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// License: GPL, v3, as defined and found on www.gnu.org,
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// http://www.gnu.org/licenses/gpl.html
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//
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//
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///////////////////////////////////////////////////////////////////////////////
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//
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//
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#include <stdlib.h>
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#include <signal.h>
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#include <time.h>
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#include <unistd.h>
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dgisselq |
#include <string.h>
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dgisselq |
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#include <ctype.h>
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#include <ncurses.h>
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#include "zopcodes.h"
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#include "zparser.h"
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#include "devbus.h"
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#include "regdefs.h"
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#define KEY_ESCAPE 27
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#define KEY_RETURN 10
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#define CTRL(X) ((X)&0x01f)
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class SPARSEMEM {
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public:
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bool m_valid;
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unsigned int m_a, m_d;
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};
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bool gbl_err = false;
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class ZIPSTATE {
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public:
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bool m_valid, m_gie, m_last_pc_valid;
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unsigned int m_sR[16], m_uR[16];
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unsigned int m_p[20];
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unsigned int m_last_pc, m_pc, m_sp;
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SPARSEMEM m_smem[5];
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SPARSEMEM m_imem[5];
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ZIPSTATE(void) : m_valid(false), m_last_pc_valid(false) {}
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void step(void) {
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m_last_pc_valid = true;
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m_last_pc = m_pc;
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}
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};
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// No particular "parameters" need definition or redefinition here.
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class ZIPPY : public DEVBUS {
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static const int MAXERR;
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typedef DEVBUS::BUSW BUSW;
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DEVBUS *m_fpga;
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int m_cursor;
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ZIPSTATE m_state;
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bool m_user_break, m_show_users_timers, m_show_cc;
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public:
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ZIPPY(DEVBUS *fpga) : m_fpga(fpga), m_cursor(0), m_user_break(false),
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m_show_users_timers(false), m_show_cc(false) {}
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void read_raw_state(void) {
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m_state.m_valid = false;
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for(int i=0; i<16; i++)
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m_state.m_sR[i] = cmd_read(i);
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for(int i=0; i<16; i++)
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m_state.m_uR[i] = cmd_read(i+16);
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for(int i=0; i<20; i++)
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m_state.m_p[i] = cmd_read(i+32);
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m_state.m_gie = (m_state.m_sR[14] & 0x020);
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m_state.m_pc = (m_state.m_gie) ? (m_state.m_uR[15]):(m_state.m_sR[15]);
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m_state.m_sp = (m_state.m_gie) ? (m_state.m_uR[13]):(m_state.m_sR[13]);
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if (m_state.m_last_pc_valid)
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m_state.m_imem[0].m_a = m_state.m_last_pc;
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else
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m_state.m_imem[0].m_a = m_state.m_pc - 1;
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try {
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m_state.m_imem[0].m_d = readio(m_state.m_imem[0].m_a);
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m_state.m_imem[0].m_valid = true;
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} catch(BUSERR be) {
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m_state.m_imem[0].m_valid = false;
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}
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m_state.m_imem[1].m_a = m_state.m_pc;
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try {
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m_state.m_imem[1].m_d = readio(m_state.m_imem[1].m_a);
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m_state.m_imem[1].m_valid = true;
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} catch(BUSERR be) {
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m_state.m_imem[1].m_valid = false;
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}
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for(int i=1; i<4; i++) {
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if (!m_state.m_imem[i].m_valid) {
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m_state.m_imem[i+1].m_valid = false;
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m_state.m_imem[i+1].m_a = m_state.m_imem[i].m_a+1;
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continue;
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}
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m_state.m_imem[i+1].m_a = zop_early_branch(
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m_state.m_imem[i].m_a,
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m_state.m_imem[i].m_d);
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try {
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m_state.m_imem[i+1].m_d = readio(m_state.m_imem[i+1].m_a);
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m_state.m_imem[i+1].m_valid = true;
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} catch(BUSERR be) {
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m_state.m_imem[i+1].m_valid = false;
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}
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}
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m_state.m_smem[0].m_a = m_state.m_sp;
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for(int i=1; i<5; i++)
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m_state.m_smem[i].m_a = m_state.m_smem[i-1].m_a+1;
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for(int i=0; i<5; i++) {
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m_state.m_smem[i].m_valid = true;
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if (m_state.m_smem[i].m_a < 0x2000)
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m_state.m_smem[i].m_valid = false;
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else if (m_state.m_smem[i].m_a < 0x4000)
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m_state.m_smem[i].m_valid = true;
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else if (m_state.m_smem[i].m_a < 0x800000)
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m_state.m_smem[i].m_valid = false;
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else if (m_state.m_smem[i].m_a < 0x1000000)
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m_state.m_smem[i].m_valid = true;
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else
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m_state.m_smem[i].m_valid = false;
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if (m_state.m_smem[i].m_valid)
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try {
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m_state.m_smem[i].m_d = readio(m_state.m_smem[i].m_a);
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m_state.m_smem[i].m_valid = true;
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} catch(BUSERR be) {
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m_state.m_smem[i].m_valid = false;
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}
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}
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m_state.m_valid = true;
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}
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dgisselq |
void kill(void) { m_fpga->kill(); }
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void close(void) { m_fpga->close(); }
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void writeio(const BUSW a, const BUSW v) { m_fpga->writeio(a, v); }
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BUSW readio(const BUSW a) { return m_fpga->readio(a); }
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void readi(const BUSW a, const int len, BUSW *buf) {
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return m_fpga->readi(a, len, buf); }
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void readz(const BUSW a, const int len, BUSW *buf) {
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return m_fpga->readz(a, len, buf); }
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void writei(const BUSW a, const int len, const BUSW *buf) {
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return m_fpga->writei(a, len, buf); }
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void writez(const BUSW a, const int len, const BUSW *buf) {
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return m_fpga->writez(a, len, buf); }
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bool poll(void) { return m_fpga->poll(); }
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void usleep(unsigned ms) { m_fpga->usleep(ms); }
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void wait(void) { m_fpga->wait(); }
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bool bus_err(void) const { return m_fpga->bus_err(); }
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void reset_err(void) { m_fpga->reset_err(); }
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void clear(void) { m_fpga->clear(); }
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void reset(void) { writeio(R_ZIPCTRL, CPU_RESET|CPU_HALT); }
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dgisselq |
void step(void) { writeio(R_ZIPCTRL, CPU_STEP); m_state.step(); }
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void go(void) { writeio(R_ZIPCTRL, CPU_GO); }
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void halt(void) { writeio(R_ZIPCTRL, CPU_HALT); }
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bool stalled(void) { return ((readio(R_ZIPCTRL)&CPU_STALL)==0); }
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dgisselq |
void show_user_timers(bool v) {
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m_show_users_timers = v;
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}
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dgisselq |
void toggle_cc(void) {
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m_show_cc = !m_show_cc;
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}
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dgisselq |
void showval(int y, int x, const char *lbl, unsigned int v, bool c) {
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if (c)
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mvprintw(y,x, ">%s> 0x%08x<", lbl, v);
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else
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mvprintw(y,x, " %s: 0x%08x ", lbl, v);
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}
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dgisselq |
void dispreg(int y, int x, const char *n, unsigned int v, bool c) {
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// 4,4,8,1 = 17 of 20, +2 = 18
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if (c)
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mvprintw(y, x, ">%s> 0x%08x<", n, v);
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else
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mvprintw(y, x, " %s: 0x%08x ", n, v);
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}
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dgisselq |
int showins(int y, const char *lbl, const unsigned int pcidx) {
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char la[80], lb[80];
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int r = y-1;
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mvprintw(y, 0, "%s0x%08x", lbl, m_state.m_imem[pcidx].m_a);
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if (m_state.m_gie) attroff(A_BOLD);
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else attron(A_BOLD);
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la[0] = '\0';
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lb[0] = '\0';
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if (m_state.m_imem[pcidx].m_valid) {
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zipi_to_string(m_state.m_imem[pcidx].m_d, la, lb);
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printw(" 0x%08x", m_state.m_imem[pcidx].m_d);
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printw(" %-25s", la);
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if (lb[0]) {
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mvprintw(y-1, 0, "%s", lbl);
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mvprintw(y-1, strlen(lbl)+10+3+8+2, "%-25s", lb);
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r--;
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}
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} else {
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printw(" 0x-------- %-25s", "(Bus Error)");
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}
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attroff(A_BOLD);
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return r;
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}
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dgisselq |
void showstack(int y, const char *lbl, const unsigned int idx) {
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| 249 |
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mvprintw(y, 27+26, "%s%08x ", lbl, m_state.m_smem[idx].m_a);
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if (m_state.m_gie) attroff(A_BOLD);
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else attron(A_BOLD);
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| 254 |
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if (m_state.m_smem[idx].m_valid)
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printw("0x%08x", m_state.m_smem[idx].m_d);
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else
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printw("(Bus Err)");
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| 258 |
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attroff(A_BOLD);
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| 259 |
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}
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| 260 |
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dgisselq |
unsigned int cmd_read(unsigned int a) {
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| 262 |
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int errcount = 0;
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| 263 |
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unsigned int s;
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| 264 |
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writeio(R_ZIPCTRL, CMD_HALT|(a&0x3f));
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while((((s=readio(R_ZIPCTRL))&CPU_STALL)== 0)&&(errcount<MAXERR)
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&&(!m_user_break))
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| 268 |
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errcount++;
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| 269 |
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if (m_user_break) {
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| 270 |
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endwin();
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| 271 |
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exit(EXIT_SUCCESS);
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| 272 |
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} else if (errcount >= MAXERR) {
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endwin();
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printf("ERR: errcount(%d) >= MAXERR on cmd_read(a=%2x)\n", errcount, a);
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printf("ZIPCTRL = 0x%08x", s);
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if ((s & 0x0200)==0) printf(" STALL");
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if (s & 0x0400) printf(" HALTED");
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if ((s & 0x03000)==0x01000)
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printf(" SW-HALT");
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| 280 |
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else {
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if (s & 0x01000) printf(" SLEEPING");
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| 282 |
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if (s & 0x02000) printf(" GIE(UsrMode)");
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| 283 |
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} printf("\n");
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exit(EXIT_FAILURE);
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| 285 |
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}
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| 286 |
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return readio(R_ZIPDATA);
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| 287 |
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}
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| 288 |
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| 289 |
191 |
dgisselq |
void cmd_write(unsigned int a, int v) {
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| 290 |
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int errcount = 0;
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| 291 |
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unsigned int s;
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| 292 |
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| 293 |
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writeio(R_ZIPCTRL, CMD_HALT|(a&0x3f));
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| 294 |
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while((((s=readio(R_ZIPCTRL))&CPU_STALL)== 0)&&(errcount<MAXERR)
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| 295 |
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&&(!m_user_break))
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errcount++;
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| 297 |
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if (m_user_break) {
|
| 298 |
|
|
endwin();
|
| 299 |
|
|
exit(EXIT_SUCCESS);
|
| 300 |
|
|
} else if (errcount >= MAXERR) {
|
| 301 |
|
|
endwin();
|
| 302 |
|
|
printf("ERR: errcount(%d) >= MAXERR on cmd_read(a=%2x)\n", errcount, a);
|
| 303 |
|
|
printf("ZIPCTRL = 0x%08x", s);
|
| 304 |
|
|
if ((s & 0x0200)==0) printf(" STALL");
|
| 305 |
|
|
if (s & 0x0400) printf(" HALTED");
|
| 306 |
|
|
if ((s & 0x03000)==0x01000)
|
| 307 |
|
|
printf(" SW-HALT");
|
| 308 |
|
|
else {
|
| 309 |
|
|
if (s & 0x01000) printf(" SLEEPING");
|
| 310 |
|
|
if (s & 0x02000) printf(" GIE(UsrMode)");
|
| 311 |
|
|
} printf("\n");
|
| 312 |
|
|
exit(EXIT_FAILURE);
|
| 313 |
|
|
}
|
| 314 |
|
|
|
| 315 |
|
|
writeio(R_ZIPDATA, (unsigned int)v);
|
| 316 |
|
|
}
|
| 317 |
|
|
|
| 318 |
19 |
dgisselq |
void read_state(void) {
|
| 319 |
|
|
int ln= 0;
|
| 320 |
|
|
bool gie;
|
| 321 |
|
|
|
| 322 |
191 |
dgisselq |
read_raw_state();
|
| 323 |
|
|
|
| 324 |
|
|
if (m_cursor < 0)
|
| 325 |
|
|
m_cursor = 0;
|
| 326 |
|
|
else if (m_cursor >= 44)
|
| 327 |
|
|
m_cursor = 43;
|
| 328 |
|
|
|
| 329 |
19 |
dgisselq |
mvprintw(ln,0, "Peripherals");
|
| 330 |
191 |
dgisselq |
mvprintw(ln,30,"%-50s", "CPU State: ");
|
| 331 |
19 |
dgisselq |
{
|
| 332 |
191 |
dgisselq |
unsigned int v = readio(R_ZIPCTRL);
|
| 333 |
|
|
mvprintw(ln,41, "0x%08x ", v);
|
| 334 |
|
|
// if (v & 0x010000)
|
| 335 |
|
|
// printw("INT ");
|
| 336 |
|
|
if ((v & 0x003000) == 0x03000)
|
| 337 |
19 |
dgisselq |
printw("Sleeping ");
|
| 338 |
191 |
dgisselq |
else if (v & 0x001000)
|
| 339 |
|
|
printw("Halted ");
|
| 340 |
|
|
else if (v & 0x002000)
|
| 341 |
|
|
printw("User Mode ");
|
| 342 |
|
|
else
|
| 343 |
|
|
printw("Supervisor mode ");
|
| 344 |
|
|
if (v& 0x0200) {
|
| 345 |
|
|
v = m_state.m_sR[15];
|
| 346 |
|
|
|
| 347 |
|
|
} else printw("Stalled ");
|
| 348 |
|
|
// if (v & 0x008000)
|
| 349 |
|
|
// printw("Break-Enabled ");
|
| 350 |
|
|
// if (v & 0x000080)
|
| 351 |
|
|
// printw("PIC Enabled ");
|
| 352 |
|
|
} ln++;
|
| 353 |
|
|
showval(ln, 0, "PIC ", m_state.m_p[0], (m_cursor==0));
|
| 354 |
|
|
showval(ln,20, "WDT ", m_state.m_p[1], (m_cursor==1));
|
| 355 |
|
|
showval(ln,40, "WBUS", m_state.m_p[2], (m_cursor==2));
|
| 356 |
|
|
showval(ln,60, "PIC2", m_state.m_p[3], (m_cursor==3));
|
| 357 |
19 |
dgisselq |
ln++;
|
| 358 |
191 |
dgisselq |
showval(ln, 0, "TMRA", m_state.m_p[4], (m_cursor==4));
|
| 359 |
|
|
showval(ln,20, "TMRB", m_state.m_p[5], (m_cursor==5));
|
| 360 |
|
|
showval(ln,40, "TMRC", m_state.m_p[6], (m_cursor==6));
|
| 361 |
|
|
showval(ln,60, "JIF ", m_state.m_p[7], (m_cursor==7));
|
| 362 |
19 |
dgisselq |
|
| 363 |
|
|
ln++;
|
| 364 |
191 |
dgisselq |
if (!m_show_users_timers) {
|
| 365 |
|
|
showval(ln, 0, "MTSK", m_state.m_p[ 8], (m_cursor==8));
|
| 366 |
|
|
showval(ln,20, "MOST", m_state.m_p[ 9], (m_cursor==9));
|
| 367 |
|
|
showval(ln,40, "MPST", m_state.m_p[10], (m_cursor==10));
|
| 368 |
|
|
showval(ln,60, "MICT", m_state.m_p[11], (m_cursor==11));
|
| 369 |
|
|
} else {
|
| 370 |
|
|
showval(ln, 0, "UTSK", m_state.m_p[12], (m_cursor==8));
|
| 371 |
|
|
showval(ln,20, "UMST", m_state.m_p[13], (m_cursor==9));
|
| 372 |
|
|
showval(ln,40, "UPST", m_state.m_p[14], (m_cursor==10));
|
| 373 |
|
|
showval(ln,60, "UICT", m_state.m_p[15], (m_cursor==11));
|
| 374 |
|
|
}
|
| 375 |
19 |
dgisselq |
|
| 376 |
|
|
ln++;
|
| 377 |
|
|
ln++;
|
| 378 |
191 |
dgisselq |
unsigned int cc = m_state.m_sR[14];
|
| 379 |
19 |
dgisselq |
gie = (cc & 0x020);
|
| 380 |
|
|
if (gie)
|
| 381 |
|
|
attroff(A_BOLD);
|
| 382 |
|
|
else
|
| 383 |
|
|
attron(A_BOLD);
|
| 384 |
|
|
mvprintw(ln, 0, "Supervisor Registers");
|
| 385 |
|
|
ln++;
|
| 386 |
|
|
|
| 387 |
191 |
dgisselq |
dispreg(ln, 0, "sR0 ", m_state.m_sR[0], (m_cursor==12));
|
| 388 |
|
|
dispreg(ln,20, "sR1 ", m_state.m_sR[1], (m_cursor==13));
|
| 389 |
|
|
dispreg(ln,40, "sR2 ", m_state.m_sR[2], (m_cursor==14));
|
| 390 |
|
|
dispreg(ln,60, "sR3 ", m_state.m_sR[3], (m_cursor==15)); ln++;
|
| 391 |
19 |
dgisselq |
|
| 392 |
191 |
dgisselq |
dispreg(ln, 0, "sR4 ", m_state.m_sR[4], (m_cursor==16));
|
| 393 |
|
|
dispreg(ln,20, "sR5 ", m_state.m_sR[5], (m_cursor==17));
|
| 394 |
|
|
dispreg(ln,40, "sR6 ", m_state.m_sR[6], (m_cursor==18));
|
| 395 |
|
|
dispreg(ln,60, "sR7 ", m_state.m_sR[7], (m_cursor==19)); ln++;
|
| 396 |
19 |
dgisselq |
|
| 397 |
191 |
dgisselq |
dispreg(ln, 0, "sR8 ", m_state.m_sR[ 8], (m_cursor==20));
|
| 398 |
|
|
dispreg(ln,20, "sR9 ", m_state.m_sR[ 9], (m_cursor==21));
|
| 399 |
|
|
dispreg(ln,40, "sR10", m_state.m_sR[10], (m_cursor==22));
|
| 400 |
|
|
dispreg(ln,60, "sR11", m_state.m_sR[11], (m_cursor==23)); ln++;
|
| 401 |
19 |
dgisselq |
|
| 402 |
191 |
dgisselq |
dispreg(ln, 0, "sR12", m_state.m_sR[12], (m_cursor==24));
|
| 403 |
|
|
dispreg(ln,20, "sSP ", m_state.m_sR[13], (m_cursor==25));
|
| 404 |
19 |
dgisselq |
|
| 405 |
191 |
dgisselq |
if (m_show_cc) {
|
| 406 |
|
|
mvprintw(ln,40, " sCC :%16s", "");
|
| 407 |
|
|
dispreg(ln, 40, "sCC ", m_state.m_sR[14], (m_cursor==26));
|
| 408 |
|
|
} else {
|
| 409 |
|
|
mvprintw(ln,40, " sCC :%16s", "");
|
| 410 |
|
|
mvprintw(ln,40, "%ssCC :%s%s%s%s%s%s%s",
|
| 411 |
|
|
(m_cursor == 26)?">":" ",
|
| 412 |
|
|
(cc&0x1000)?"FE":"", // Floating point exception
|
| 413 |
|
|
(cc&0x0800)?"DV":"", // Division by zero
|
| 414 |
|
|
(cc&0x0400)?"BE":"", // Bus Error
|
| 415 |
|
|
(cc&0x0200)?"TP":"", // Trap
|
| 416 |
|
|
(cc&0x0100)?"IL":"", // Illegal instruction
|
| 417 |
|
|
(cc&0x0080)?"BK":"", // Break
|
| 418 |
|
|
((gie==0)&&(cc&0x0010))?"HLT":""); // Halted
|
| 419 |
|
|
mvprintw(ln,54,"%s%s%s%s",
|
| 420 |
|
|
(cc&8)?"V":" ",
|
| 421 |
|
|
(cc&4)?"N":" ",
|
| 422 |
|
|
(cc&2)?"C":" ",
|
| 423 |
|
|
(cc&1)?"Z":" ");
|
| 424 |
|
|
}
|
| 425 |
|
|
dispreg(ln,60, "sPC ", m_state.m_sR[15], (m_cursor==27));
|
| 426 |
19 |
dgisselq |
ln++;
|
| 427 |
|
|
|
| 428 |
|
|
if (gie)
|
| 429 |
|
|
attron(A_BOLD);
|
| 430 |
|
|
else
|
| 431 |
|
|
attroff(A_BOLD);
|
| 432 |
|
|
mvprintw(ln, 0, "User Registers"); ln++;
|
| 433 |
191 |
dgisselq |
dispreg(ln, 0, "uR0 ", m_state.m_uR[0], (m_cursor==28));
|
| 434 |
|
|
dispreg(ln,20, "uR1 ", m_state.m_uR[1], (m_cursor==29));
|
| 435 |
|
|
dispreg(ln,40, "uR2 ", m_state.m_uR[2], (m_cursor==30));
|
| 436 |
|
|
dispreg(ln,60, "uR3 ", m_state.m_uR[3], (m_cursor==31)); ln++;
|
| 437 |
19 |
dgisselq |
|
| 438 |
191 |
dgisselq |
dispreg(ln, 0, "uR4 ", m_state.m_uR[4], (m_cursor==32));
|
| 439 |
|
|
dispreg(ln,20, "uR5 ", m_state.m_uR[5], (m_cursor==33));
|
| 440 |
|
|
dispreg(ln,40, "uR6 ", m_state.m_uR[6], (m_cursor==34));
|
| 441 |
|
|
dispreg(ln,60, "uR7 ", m_state.m_uR[7], (m_cursor==35)); ln++;
|
| 442 |
19 |
dgisselq |
|
| 443 |
191 |
dgisselq |
dispreg(ln, 0, "uR8 ", m_state.m_uR[8], (m_cursor==36));
|
| 444 |
|
|
dispreg(ln,20, "uR9 ", m_state.m_uR[9], (m_cursor==37));
|
| 445 |
|
|
dispreg(ln,40, "uR10", m_state.m_uR[10], (m_cursor==38));
|
| 446 |
|
|
dispreg(ln,60, "uR11", m_state.m_uR[11], (m_cursor==39)); ln++;
|
| 447 |
19 |
dgisselq |
|
| 448 |
191 |
dgisselq |
dispreg(ln, 0, "uR12", m_state.m_uR[12], (m_cursor==40));
|
| 449 |
|
|
dispreg(ln,20, "uSP ", m_state.m_uR[13], (m_cursor==41));
|
| 450 |
|
|
cc = m_state.m_uR[14];
|
| 451 |
|
|
if (m_show_cc) {
|
| 452 |
|
|
mvprintw(ln,40, " uCC :%16s", "");
|
| 453 |
|
|
dispreg(ln, 40, "uCC ", m_state.m_uR[14], (m_cursor==42));
|
| 454 |
|
|
} else {
|
| 455 |
|
|
mvprintw(ln,40, " uCC :%16s", "");
|
| 456 |
|
|
mvprintw(ln,40, "%suCC :%s%s%s%s%s%s%s",
|
| 457 |
|
|
(m_cursor == 42)?">":" ",
|
| 458 |
|
|
(cc&0x1000)?"FE":"", // Floating point Exception
|
| 459 |
|
|
(cc&0x0800)?"DV":"", // Division by zero
|
| 460 |
|
|
(cc&0x0400)?"BE":"", // Bus Error
|
| 461 |
|
|
(cc&0x0200)?"TP":"", // Trap
|
| 462 |
|
|
(cc&0x0100)?"IL":"", // Illegal instruction
|
| 463 |
|
|
(cc&0x0040)?"ST":"", // Single-step
|
| 464 |
|
|
((gie)&&(cc&0x0010))?"SL":""); // Sleep
|
| 465 |
|
|
mvprintw(ln,54,"%s%s%s%s",
|
| 466 |
|
|
(cc&8)?"V":" ",
|
| 467 |
|
|
(cc&4)?"N":" ",
|
| 468 |
|
|
(cc&2)?"C":" ",
|
| 469 |
|
|
(cc&1)?"Z":" ");
|
| 470 |
|
|
}
|
| 471 |
|
|
dispreg(ln,60, "uPC ", m_state.m_uR[15], (m_cursor==43));
|
| 472 |
19 |
dgisselq |
|
| 473 |
|
|
attroff(A_BOLD);
|
| 474 |
191 |
dgisselq |
ln+=3;
|
| 475 |
19 |
dgisselq |
|
| 476 |
191 |
dgisselq |
showins(ln+4, " ", 0);
|
| 477 |
|
|
{
|
| 478 |
|
|
int lclln = ln+3;
|
| 479 |
|
|
for(int i=1; i<5; i++)
|
| 480 |
|
|
lclln = showins(lclln, (i==1)?">":" ", i);
|
| 481 |
|
|
for(int i=0; i<5; i++)
|
| 482 |
|
|
showstack(ln+i, (i==0)?">":" ", i);
|
| 483 |
|
|
}
|
| 484 |
19 |
dgisselq |
}
|
| 485 |
191 |
dgisselq |
|
| 486 |
|
|
void cursor_up(void) {
|
| 487 |
|
|
if (m_cursor > 3)
|
| 488 |
|
|
m_cursor -= 4;
|
| 489 |
|
|
} void cursor_down(void) {
|
| 490 |
|
|
if (m_cursor < 40)
|
| 491 |
|
|
m_cursor += 4;
|
| 492 |
|
|
} void cursor_left(void) {
|
| 493 |
|
|
if (m_cursor > 0)
|
| 494 |
|
|
m_cursor--;
|
| 495 |
|
|
else m_cursor = 43;
|
| 496 |
|
|
} void cursor_right(void) {
|
| 497 |
|
|
if (m_cursor < 43)
|
| 498 |
|
|
m_cursor++;
|
| 499 |
|
|
else m_cursor = 0;
|
| 500 |
|
|
}
|
| 501 |
|
|
|
| 502 |
|
|
int cursor(void) { return m_cursor; }
|
| 503 |
19 |
dgisselq |
};
|
| 504 |
|
|
|
| 505 |
191 |
dgisselq |
const int ZIPPY::MAXERR = 100000;
|
| 506 |
|
|
|
| 507 |
19 |
dgisselq |
DEVBUS *m_fpga;
|
| 508 |
|
|
|
| 509 |
191 |
dgisselq |
void get_value(ZIPPY *zip) {
|
| 510 |
|
|
int wy, wx, ra;
|
| 511 |
|
|
int c = zip->cursor();
|
| 512 |
|
|
|
| 513 |
|
|
wx = (c & 0x03) * 20 + 9 + 1;
|
| 514 |
|
|
wy = (c >> 2);
|
| 515 |
|
|
if (wy >= 3+4)
|
| 516 |
|
|
wy++;
|
| 517 |
|
|
if (wy > 3)
|
| 518 |
|
|
wy += 2;
|
| 519 |
|
|
wy++;
|
| 520 |
|
|
|
| 521 |
|
|
if (c >= 12)
|
| 522 |
|
|
ra = c - 12;
|
| 523 |
|
|
else
|
| 524 |
|
|
ra = c + 32;
|
| 525 |
|
|
|
| 526 |
|
|
bool done = false;
|
| 527 |
|
|
char str[16];
|
| 528 |
|
|
int pos = 0; str[pos] = '\0';
|
| 529 |
|
|
attron(A_NORMAL | A_UNDERLINE);
|
| 530 |
|
|
mvprintw(wy, wx, "%-8s", "");
|
| 531 |
|
|
while(!done) {
|
| 532 |
|
|
int chv = getch();
|
| 533 |
|
|
switch(chv) {
|
| 534 |
|
|
case KEY_ESCAPE:
|
| 535 |
|
|
pos = 0; str[pos] = '\0'; done = true;
|
| 536 |
|
|
break;
|
| 537 |
|
|
case KEY_RETURN: case KEY_ENTER: case KEY_UP: case KEY_DOWN:
|
| 538 |
|
|
done = true;
|
| 539 |
|
|
break;
|
| 540 |
|
|
case KEY_LEFT: case KEY_BACKSPACE:
|
| 541 |
|
|
if (pos > 0) pos--;
|
| 542 |
|
|
break;
|
| 543 |
|
|
case KEY_CLEAR:
|
| 544 |
|
|
pos = 0;
|
| 545 |
|
|
break;
|
| 546 |
|
|
case '0': case ' ': str[pos++] = '0'; break;
|
| 547 |
|
|
case '1': str[pos++] = '1'; break;
|
| 548 |
|
|
case '2': str[pos++] = '2'; break;
|
| 549 |
|
|
case '3': str[pos++] = '3'; break;
|
| 550 |
|
|
case '4': str[pos++] = '4'; break;
|
| 551 |
|
|
case '5': str[pos++] = '5'; break;
|
| 552 |
|
|
case '6': str[pos++] = '6'; break;
|
| 553 |
|
|
case '7': str[pos++] = '7'; break;
|
| 554 |
|
|
case '8': str[pos++] = '8'; break;
|
| 555 |
|
|
case '9': str[pos++] = '9'; break;
|
| 556 |
|
|
case 'A': case 'a': str[pos++] = 'A'; break;
|
| 557 |
|
|
case 'B': case 'b': str[pos++] = 'B'; break;
|
| 558 |
|
|
case 'C': case 'c': str[pos++] = 'C'; break;
|
| 559 |
|
|
case 'D': case 'd': str[pos++] = 'D'; break;
|
| 560 |
|
|
case 'E': case 'e': str[pos++] = 'E'; break;
|
| 561 |
|
|
case 'F': case 'f': str[pos++] = 'F'; break;
|
| 562 |
|
|
}
|
| 563 |
|
|
|
| 564 |
|
|
if (pos > 8)
|
| 565 |
|
|
pos = 8;
|
| 566 |
|
|
str[pos] = '\0';
|
| 567 |
|
|
|
| 568 |
|
|
attron(A_NORMAL | A_UNDERLINE);
|
| 569 |
|
|
mvprintw(wy, wx, "%-8s", str);
|
| 570 |
|
|
if (pos > 0) {
|
| 571 |
|
|
attron(A_NORMAL | A_UNDERLINE | A_BLINK);
|
| 572 |
|
|
mvprintw(wy, wx+pos-1, "%c", str[pos-1]);
|
| 573 |
|
|
}
|
| 574 |
|
|
attrset(A_NORMAL);
|
| 575 |
|
|
}
|
| 576 |
|
|
|
| 577 |
|
|
if (pos > 0) {
|
| 578 |
|
|
int v;
|
| 579 |
|
|
v = strtoul(str, NULL, 16);
|
| 580 |
|
|
zip->cmd_write(ra, v);
|
| 581 |
|
|
}
|
| 582 |
|
|
}
|
| 583 |
|
|
|
| 584 |
|
|
void on_sigint(int v) {
|
| 585 |
|
|
endwin();
|
| 586 |
|
|
|
| 587 |
|
|
fprintf(stderr, "Interrupted!\n");
|
| 588 |
|
|
exit(-2);
|
| 589 |
|
|
}
|
| 590 |
|
|
|
| 591 |
|
|
void stall_screen(void) {
|
| 592 |
|
|
erase();
|
| 593 |
|
|
mvprintw(0,0, "CPU is stalled. (Q to quit)\n");
|
| 594 |
|
|
}
|
| 595 |
|
|
|
| 596 |
19 |
dgisselq |
int main(int argc, char **argv) {
|
| 597 |
|
|
// FPGAOPEN(m_fpga);
|
| 598 |
|
|
ZIPPY *zip = new ZIPPY(m_fpga);
|
| 599 |
|
|
|
| 600 |
|
|
initscr();
|
| 601 |
|
|
raw();
|
| 602 |
|
|
noecho();
|
| 603 |
|
|
keypad(stdscr, true);
|
| 604 |
|
|
|
| 605 |
191 |
dgisselq |
signal(SIGINT, on_sigint);
|
| 606 |
|
|
|
| 607 |
19 |
dgisselq |
int chv;
|
| 608 |
|
|
bool done = false;
|
| 609 |
|
|
|
| 610 |
|
|
zip->halt();
|
| 611 |
|
|
for(int i=0; (i<5)&&(zip->stalled()); i++)
|
| 612 |
|
|
;
|
| 613 |
|
|
if (!zip->stalled())
|
| 614 |
|
|
zip->read_state();
|
| 615 |
191 |
dgisselq |
else
|
| 616 |
|
|
stall_screen();
|
| 617 |
|
|
while((!done)&&(!gbl_err)) {
|
| 618 |
19 |
dgisselq |
chv = getch();
|
| 619 |
|
|
switch(chv) {
|
| 620 |
191 |
dgisselq |
case 'c': case 'C':
|
| 621 |
|
|
zip->toggle_cc();
|
| 622 |
|
|
break;
|
| 623 |
19 |
dgisselq |
case 'g': case 'G':
|
| 624 |
|
|
m_fpga->writeio(R_ZIPCTRL, CPU_GO);
|
| 625 |
|
|
// We just released the CPU, so we're now done.
|
| 626 |
|
|
done = true;
|
| 627 |
|
|
break;
|
| 628 |
191 |
dgisselq |
case 'l': case 'L': case CTRL('L'):
|
| 629 |
|
|
redrawwin(stdscr);
|
| 630 |
|
|
case 'm': case 'M':
|
| 631 |
|
|
zip->show_user_timers(false);
|
| 632 |
|
|
break;
|
| 633 |
|
|
case 'q': case 'Q': case CTRL('C'):
|
| 634 |
|
|
case KEY_CANCEL: case KEY_CLOSE: case KEY_EXIT:
|
| 635 |
|
|
case KEY_ESCAPE:
|
| 636 |
19 |
dgisselq |
done = true;
|
| 637 |
|
|
break;
|
| 638 |
|
|
case 'r': case 'R':
|
| 639 |
|
|
zip->reset();
|
| 640 |
|
|
erase();
|
| 641 |
|
|
break;
|
| 642 |
191 |
dgisselq |
case 't': case 'T':
|
| 643 |
19 |
dgisselq |
case 's': case 'S':
|
| 644 |
|
|
zip->step();
|
| 645 |
|
|
break;
|
| 646 |
191 |
dgisselq |
case 'u': case 'U':
|
| 647 |
|
|
zip->show_user_timers(true);
|
| 648 |
|
|
break;
|
| 649 |
|
|
case '\r': case '\n':
|
| 650 |
|
|
case KEY_IC: case KEY_ENTER:
|
| 651 |
|
|
get_value(zip);
|
| 652 |
|
|
break;
|
| 653 |
|
|
case KEY_UP:
|
| 654 |
|
|
zip->cursor_up();
|
| 655 |
|
|
break;
|
| 656 |
|
|
case KEY_DOWN:
|
| 657 |
|
|
zip->cursor_down();
|
| 658 |
|
|
break;
|
| 659 |
|
|
case KEY_LEFT:
|
| 660 |
|
|
zip->cursor_left();
|
| 661 |
|
|
break;
|
| 662 |
|
|
case KEY_RIGHT:
|
| 663 |
|
|
zip->cursor_right();
|
| 664 |
|
|
break;
|
| 665 |
|
|
case ERR: case KEY_CLEAR:
|
| 666 |
19 |
dgisselq |
default:
|
| 667 |
|
|
;
|
| 668 |
|
|
}
|
| 669 |
|
|
|
| 670 |
191 |
dgisselq |
if ((done)||(gbl_err))
|
| 671 |
|
|
break;
|
| 672 |
|
|
else if (zip->stalled())
|
| 673 |
|
|
stall_screen();
|
| 674 |
19 |
dgisselq |
else
|
| 675 |
|
|
zip->read_state();
|
| 676 |
|
|
}
|
| 677 |
|
|
|
| 678 |
|
|
endwin();
|
| 679 |
191 |
dgisselq |
|
| 680 |
|
|
if (gbl_err) {
|
| 681 |
|
|
printf("Killed on error: could not access bus!\n");
|
| 682 |
|
|
exit(-2);
|
| 683 |
|
|
}
|
| 684 |
19 |
dgisselq |
}
|
| 685 |
|
|
|
