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-rw-r--r--qtmips_asm/qtmips_asm.pro9
-rw-r--r--qtmips_asm/simpleasm.cpp285
-rw-r--r--qtmips_asm/simpleasm.h83
3 files changed, 375 insertions, 2 deletions
diff --git a/qtmips_asm/qtmips_asm.pro b/qtmips_asm/qtmips_asm.pro
index d096961..ed42c10 100644
--- a/qtmips_asm/qtmips_asm.pro
+++ b/qtmips_asm/qtmips_asm.pro
@@ -6,6 +6,9 @@ CONFIG += c++11
TEMPLATE = lib
CONFIG += staticlib
+INCLUDEPATH += $$PWD/../qtmips_machine $$PWD/../qtmips_osemu
+DEPENDPATH += $$PWD/../qtmips_machine
+
LIBS += -lelf
QMAKE_CXXFLAGS += -std=c++0x
QMAKE_CXXFLAGS_DEBUG += -ggdb
@@ -14,8 +17,10 @@ DEFINES += QTMIPS_MACHINE_LIBRARY
DEFINES += QT_DEPRECATED_WARNINGS
SOURCES += \
- fixmatheval.cpp
+ fixmatheval.cpp \
+ simpleasm.cpp
HEADERS += \
fixmatheval.h \
- messagetype.h
+ messagetype.h \
+ simpleasm.h
diff --git a/qtmips_asm/simpleasm.cpp b/qtmips_asm/simpleasm.cpp
new file mode 100644
index 0000000..15d50b2
--- /dev/null
+++ b/qtmips_asm/simpleasm.cpp
@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*******************************************************************************
+ * QtMips - MIPS 32-bit Architecture Subset Simulator
+ *
+ * Implemented to support following courses:
+ *
+ * B35APO - Computer Architectures
+ * https://cw.fel.cvut.cz/wiki/courses/b35apo
+ *
+ * B4M35PAP - Advanced Computer Architectures
+ * https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start
+ *
+ * Copyright (c) 2017-2019 Karel Koci<cynerd@email.cz>
+ * Copyright (c) 2019 Pavel Pisa <pisa@cmp.felk.cvut.cz>
+ *
+ * Faculty of Electrical Engineering (http://www.fel.cvut.cz)
+ * Czech Technical University (http://www.cvut.cz/)
+ *
+ * This program 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
+ * of the License, or (at your option) any later version.
+ *
+ * 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., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ ******************************************************************************/
+
+#include <QObject>
+
+#include "simpleasm.h"
+
+using namespace fixmatheval;
+
+
+SymbolTableDb::SymbolTableDb(machine::SymbolTable *symtab) {
+ this->symtab = symtab;
+}
+
+bool SymbolTableDb::getValue(fixmatheval::FmeValue &value, QString name) {
+ std::uint32_t val;
+ if (!symtab->name_to_value(val, name))
+ return false;
+ value = val;
+ return true;
+}
+
+void SymbolTableDb::setSymbol(QString name, std::uint32_t value, std::uint32_t size,
+ unsigned char info, unsigned char other) {
+ symtab->set_symbol(name, value, size, info, other);
+}
+
+
+std::uint64_t SimpleAsm::string_to_uint64(QString str, int base,
+ int *chars_taken) {
+ int i;
+ std::int64_t val;
+ char *p, *r;
+ char cstr[str.count() + 1];
+ for (i = 0; i < str.count(); i++)
+ cstr[i] = str.at(i).toLatin1();
+ cstr[i] = 0;
+ p = cstr;
+ val = std::strtoll(p, &r, base);
+ if (chars_taken != nullptr)
+ *chars_taken = r - p;
+ return val;
+}
+
+SimpleAsm::SimpleAsm(QObject *parent) : Super(parent) {
+ clear();
+}
+
+SimpleAsm::~SimpleAsm() {
+ clear();
+}
+
+void SimpleAsm::clear() {
+ symtab = nullptr;
+ mem = nullptr;
+ while (!reloc.isEmpty()) {
+ delete reloc.takeFirst();
+ }
+ error_occured = false;
+ fatal_occured = false;
+}
+
+void SimpleAsm::setup(machine::MemoryAccess *mem, SymbolTableDb *symtab,
+ std::uint32_t address) {
+ this->mem = mem;
+ this->symtab = symtab;
+ this->address = address;
+}
+
+bool SimpleAsm::process_line(QString line, QString filename,
+ int line_number, QString *error_ptr) {
+ QString error;
+ int pos;
+ QString label = "";
+ pos = line.indexOf("#");
+ if (pos >= 0)
+ line.truncate(pos);
+ pos = line.indexOf(";");
+ if (pos >= 0)
+ line.truncate(pos);
+ pos = line.indexOf("//");
+ if (pos >= 0)
+ line.truncate(pos);
+ line = line.simplified();
+ pos = line.indexOf(":");
+ if (pos >= 0) {
+ label = line.mid(0, pos);
+ line = line.mid(pos + 1).trimmed();
+ symtab->setSymbol(label, address, 4);
+ }
+ if (line.isEmpty())
+ return true;
+ int k = 0, l;
+ while (k < line.count()) {
+ if (!line.at(k).isSpace())
+ break;
+ k++;
+ }
+ l = k;
+ while (l < line.count()) {
+ if (!line.at(l).isLetterOrNumber() && !(line.at(l) == '.'))
+ break;
+ l++;
+ }
+ QString op = line.mid(k, l - k).toUpper();
+ if ((op == ".DATA") || (op == ".TEXT") ||
+ (op == ".GLOBL") || (op == ".END") ||
+ (op == ".ENT")) {
+ return true;
+ }
+ if (op == ".ORG") {
+ bool ok;
+ fixmatheval::FmeExpression expression;
+ fixmatheval::FmeValue value;
+ ok = expression.parse(line.mid(op.size()), error);
+ if (ok)
+ ok = expression.eval(value, symtab, error);
+ if (!ok) {
+ error = tr("line %1 .orig %2 parse error.")
+ .arg(QString::number(line_number), line);
+ emit report_message(messagetype::ERROR, filename, line_number, 0, error, "");
+ error_occured = true;
+ fatal_occured = true;
+ if (error_ptr != nullptr)
+ *error_ptr = error;
+ return false;
+ }
+ address = value;
+ return true;
+ }
+ if ((op == ".EQU") || (op == ".SET")) {
+ QStringList operands = line.mid(op.size()).split(",");
+ if ((operands.count() > 2) || (operands.count() < 1)) {
+ error = tr("line %1 .set or .equ incorrect arguments number.")
+ .arg(QString::number(line_number));
+ emit report_message(messagetype::ERROR, filename, line_number, 0, error, "");
+ error_occured = true;
+ if (error_ptr != nullptr)
+ *error_ptr = error;
+ return false;
+ }
+ QString name = operands.at(0).trimmed();
+ if ((name == "noat") || (name == "noreored"))
+ return true;
+ bool ok;
+ fixmatheval::FmeValue value = 1;
+ if (operands.count() > 1) {
+ fixmatheval::FmeExpression expression;
+ ok = expression.parse(operands.at(1), error);
+ if (ok)
+ ok = expression.eval(value, symtab, error);
+ if (!ok) {
+ error = tr("line %1 .set or .equ %2 parse error.")
+ .arg(QString::number(line_number), operands.at(1));
+ emit report_message(messagetype::ERROR, filename, line_number, 0, error, "");
+ error_occured = true;
+ if (error_ptr != nullptr)
+ *error_ptr = error;
+ return false;
+ }
+ }
+ symtab->setSymbol(name, value, 0);
+ return true;
+ }
+ if (op == ".WORD") {
+ foreach (QString s, line.mid(op.size()).split(",")) {
+ s = s.simplified();
+ std::uint32_t val = 0;
+ int chars_taken;
+ val = string_to_uint64(s, 0, &chars_taken);
+ if (chars_taken != s.size()) {
+ val = 0;
+ reloc.append(new machine::RelocExpression(address, s, 0,
+ -0xffffffff, 0xffffffff, 0, 32, 0, filename, line_number, 0));
+ }
+ if (fatal_occured)
+ mem->write_word(address, val);
+ address += 4;
+ }
+ return true;
+ }
+
+ std::uint32_t inst[2] = {0, 0};
+ ssize_t size = machine::Instruction::code_from_string(inst, 8, line, error,
+ address, &reloc, filename, line_number, true);
+ if (size < 0) {
+ error = tr("line %1 instruction %2 parse error - %3.")
+ .arg(QString::number(line_number), line, error);
+ emit report_message(messagetype::ERROR, filename, line_number, 0, error, "");
+ error_occured = true;
+ if (error_ptr != nullptr)
+ *error_ptr = error;
+ return false;
+ }
+ std::uint32_t *p = inst;
+ for (ssize_t l = 0; l < size; l += 4) {
+ if (!fatal_occured)
+ mem->write_word(address, *(p++));
+ address += 4;
+ }
+ return true;
+}
+
+bool SimpleAsm::finish(QString *error_ptr) {
+ bool error_reported = false;
+ foreach(machine::RelocExpression *r, reloc) {
+ QString error;
+ fixmatheval::FmeExpression expression;
+ if (!expression.parse(r->expression, error)) {
+ error = tr("expression parse error %1 at line %2, expression %3.")
+ .arg(error, QString::number(r->line), expression.dump());
+ emit report_message(messagetype::ERROR, r->filename, r->line, 0, error, "");
+ if (error_ptr != nullptr && !error_reported)
+ *error_ptr = error;
+ error_occured = true;
+ error_reported = true;
+ } else {
+ fixmatheval::FmeValue value;
+ if (!expression.eval(value, symtab, error)) {
+ error = tr("expression evalution error %1 at line %2 , expression %3.")
+ .arg(error, QString::number(r->line), expression.dump());
+ emit report_message(messagetype::ERROR, r->filename, r->line, 0, error, "");
+ if (error_ptr != nullptr && !error_reported)
+ *error_ptr = error;
+ error_occured = true;
+ error_reported = true;
+ } else {
+ if (false)
+ emit report_message(messagetype::INFO, r->filename, r->line, 0,
+ expression.dump() + " -> " + QString::number(value), "");
+ machine::Instruction inst(mem->read_word(r->location, true));
+ if (!inst.update(value, r)) {
+ error = tr("instruction update error %1 at line %2, expression %3 -> value %4.")
+ .arg(error, QString::number(r->line), expression.dump(), QString::number(value));
+ emit report_message(messagetype::ERROR, r->filename, r->line, 0, error, "");
+ if (error_ptr != nullptr && !error_reported)
+ *error_ptr = error;
+ error_occured = true;
+ error_reported = true;
+ }
+ if (!fatal_occured)
+ mem->write_word(r->location, inst.data());
+ }
+ }
+ }
+ while (!reloc.isEmpty()) {
+ delete reloc.takeFirst();
+ }
+
+ emit mem->external_change_notify(mem, 0, 0xffffffff, true);
+
+ return !error_occured;
+}
diff --git a/qtmips_asm/simpleasm.h b/qtmips_asm/simpleasm.h
new file mode 100644
index 0000000..773aa39
--- /dev/null
+++ b/qtmips_asm/simpleasm.h
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*******************************************************************************
+ * QtMips - MIPS 32-bit Architecture Subset Simulator
+ *
+ * Implemented to support following courses:
+ *
+ * B35APO - Computer Architectures
+ * https://cw.fel.cvut.cz/wiki/courses/b35apo
+ *
+ * B4M35PAP - Advanced Computer Architectures
+ * https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start
+ *
+ * Copyright (c) 2017-2019 Karel Koci<cynerd@email.cz>
+ * Copyright (c) 2019 Pavel Pisa <pisa@cmp.felk.cvut.cz>
+ *
+ * Faculty of Electrical Engineering (http://www.fel.cvut.cz)
+ * Czech Technical University (http://www.cvut.cz/)
+ *
+ * This program 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
+ * of the License, or (at your option) any later version.
+ *
+ * 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., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ ******************************************************************************/
+
+#ifndef SIMPLEASM_H
+#define SIMPLEASM_H
+
+#include <QString>
+#include "fixmatheval.h"
+#include "qtmipsmachine.h"
+#include "messagetype.h"
+
+class SymbolTableDb : public fixmatheval::FmeSymbolDb {
+public:
+ SymbolTableDb(machine::SymbolTable *symtab);
+ virtual bool getValue(fixmatheval::FmeValue &value, QString name) override;
+ void setSymbol(QString name, std::uint32_t value, std::uint32_t size,
+ unsigned char info = 0, unsigned char other = 0);
+private:
+ machine::SymbolTable *symtab;
+};
+
+class SimpleAsm : public QObject {
+ Q_OBJECT
+
+ using Super = QObject;
+
+signals:
+ void report_message(messagetype::Type type, QString file, int line,
+ int column, QString text, QString hint);
+
+public:
+ SimpleAsm(QObject *parent = nullptr);
+ ~SimpleAsm();
+public:
+ static std::uint64_t string_to_uint64(QString str, int base,
+ int *chars_taken = nullptr);
+ void clear();
+ void setup(machine::MemoryAccess *mem, SymbolTableDb *symtab, std::uint32_t address);
+ bool process_line(QString line, QString filename = "",
+ int line_number = 0, QString *error_ptr = nullptr);
+ bool finish(QString *error_ptr = nullptr);
+private:
+ bool error_occured;
+ bool fatal_occured;
+ SymbolTableDb *symtab;
+ machine::MemoryAccess *mem;
+ machine::RelocExpressionList reloc;
+ std::uint32_t address;
+};
+
+#endif /*SIMPLEASM_H*/
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