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/*
Copyright (C) 1999 T. Scott Dattalo
This file is part of gpsim.
gpsim is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
gpsim 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 gpsim; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <glib.h>
#include <iostream>
#include <string>
#include "command.h"
#include "cmd_disasm.h"
#include "misc.h"
#include "../src/errors.h"
#include "../src/expr.h"
#include "../src/processor.h"
#include "../src/value.h"
cmd_disassemble disassemble;
static cmd_options cmd_disassemble_options[] =
{
{nullptr, 0, 0}
};
cmd_disassemble::cmd_disassemble()
: command("disassemble", "da")
{
brief_doc = "Disassemble the current cpu";
long_doc = "\ndisassemble [startCount : endCount] | [count]]\n\n\
\t startCount, endCount and count may all be expressions that evaluate\n\
\t to an integer value. The colon is used to indicate a range.\n\n\
\t startCount - Start list with the instruction startCount from the \n\
\t instruction at the PC.\n\
\t endCount - List instruction in the list is the endCount\n\
\t instruction from the PC.\n\
\t count - List count instructions from starting with the\n\
\t instruction at thePC.\n\n\
\t no arguments: disassembles 10 instructions before and 5 after the pc.\n\
\t one argument: disassemble [count] instructions after the pc.\n\
\t two arguments: disassemble from [startCount] to [endCount] relative\n\
\t to the PC.\n";
op = cmd_disassemble_options;
}
void cmd_disassemble::disassemble(Expression *expr)
{
Processor *cpu = GetActiveCPU();
if (cpu) {
// Select a default range:
int start = -10;
int end = 5;
if (expr) {
try {
Value *v = expr->evaluate();
AbstractRange *ar = dynamic_cast<AbstractRange *>(v);
if (ar) {
start = ar->get_leftVal();
end = ar->get_rightVal();
} else if (v) {
start = 0;
gint64 i;
v->get(i);
end = (int) i;
}
}
catch (const Error &err) {
std::cout << "ERROR:" << err.what() << '\n';
}
}
if (cpu->pma) {
int current_pc = cpu->pma->get_PC();
if (start < 0) {
start += current_pc;
end += current_pc;
}
std::cout << std::hex << " current pc = 0x" << current_pc << '\n';
cpu->disassemble(start, end);
}
}
}
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