forked from ccccourse/co111a
-
Notifications
You must be signed in to change notification settings - Fork 0
/
myasm.cpp
247 lines (211 loc) · 8.89 KB
/
myasm.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
#include <iostream>
#include <fstream>
#include <regex>
#include <string>
#include <cstdlib>
#include <map>
#include <iomanip>
#include <bitset>
using namespace std;
ofstream to_bin; // 宣告在237行 無法運作且不會報錯
// vvvvvvvvvvvvvvvvvvv擷取自老師的 co/06/asm.cpp vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
map<string, string> dMap {
{"", "000"}, {"M", "001"}, {"D", "010"}, {"MD", "011"},
{"A","100"}, {"AM","101"}, {"AD","110"}, {"AMD","111"}
};
map<string, string> cMap {
{"0", "0101010"}, {"1", "0111111"}, {"-1", "0111010"},
{"D", "0001100"}, {"A", "0110000"}, {"!D", "0001101"},
{"!A", "0110001"}, {"-D", "0001111"}, {"-A", "0110011"},
{"D+1", "0011111"}, {"A+1", "0110111"}, {"D-1", "0001110"},
{"A-1", "0110010"}, {"D+A", "0000010"}, {"D-A", "0010011"},
{"A-D", "0000111"}, {"D&A", "0000000"}, {"D|A", "0010101"},
{"M", "1110000"}, {"!M", "1110001"}, {"-M", "1110011"},
{"M+1", "1110111"}, {"M-1", "1110010"}, {"D+M", "1000010"},
{"D-M", "1010011"}, {"M-D", "1000111"}, {"D&M", "1000000"},
{"D|M", "1010101"}
};
map<string, string> jMap {
{"", "000"}, {"JGT","001"}, {"JEQ","010"}, {"JGE","011"},
{"JLT","100"}, {"JNE","101"}, {"JLE","110"}, {"JMP","111"}
};
int varTop = 16;
map<string, int> symMap {
{"R0",0},{"R1",1},{"R2",2},{"R3",3},{"R4",4},{"R5",5},{"R6",6},{"R7",7},
{"R8",8}, {"R9",9}, {"R10",10}, {"R11",11},{"R12",12}, {"R13",13}, {"R14",14}, {"R15",15},
{"SCREEN",16384}, {"KBD",24576}, {"SP",0}, {"LCL",0}, {"ARG",2}, {"THIS",3}, {"THAT",4}
};
// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
bool isNumber(const string& str){
for (char const &c : str) {
if (std::isdigit(c) == 0) return false;
}
return true;
}
void parse1(string line, string& save, int* counter){
regex reg("//.+");
regex reg2(" ");
regex reg3("\\((\\w+)\\)");
smatch m;
string sym;
line = regex_replace(line, reg, "");
line = regex_replace(line, reg2, "");
if (regex_search( line, m, reg3)){
sym = m[1];
symMap[sym] = *counter; // 記住符號位址，給 pass2 編碼時使用
// cout << "symMap[" << m2[1] << "] = " << *counter << endl;
}
// char* s = const_cast<char*>(line.c_str()); //"std::string" to "char *", regex_match不接受string 所以要先轉成 char *
// bool isSym = regex_match (s, m, reg3); // returns true, and m[0] contains "s"
// if(isSym){
// string sym = m[0];
// cout << "end: " << (sizeof(sym)) << endl;
// cout << "end: " << (sizeof("(LOOP)")) << endl;
// cout << "symble: " << sym.substr(1,(sizeof(sym))) << endl;
// }
// symble = regex_match(line);
if (line != ""){
cout << setfill('0') << setw(2) << *counter << ":" << line << endl;
if (line == "(" + sym + ")")
cout << "symbol:" << sym << " address=" << (*counter)-- << endl;
(*counter)++;
}
}
void parse2(string line, string& save, int* counter, streambuf *hack_buf, streambuf *bin_buf, streambuf *origin){
regex reg("//.+");
regex reg2(" ");
regex reg3("\\((\\w+)\\)");
regex reg4("\\@(\\w+)");
smatch m;
string sym;
int save2bin;
line = regex_replace(line, reg, "");
line = regex_replace(line, reg2, "");
if (regex_search( line, m, reg3)){
sym = m[1];
symMap[sym] = *counter; // 記住符號位址，給 pass2 編碼時使用
// cout << "symMap[" << m[1] << "] = " << *counter << endl;
cout << "(" << m[1] << ")" << endl;
}
if (line != ""){
if (!line.find(sym)){
cout << setfill('0') << setw(2) << hex << uppercase << *counter << ": " << line;
cout << " \t\t";
if (!line.find("@")){
// A cmd
if (regex_search(line, m, reg4)){
bool isSym = !isNumber(m[1]);
if(isSym){
if (symMap.find(m[1]) == symMap.end()) symMap[m[1]] = varTop++;
cout.rdbuf(hack_buf);
cout << setw(16) << setfill('0') << bitset<8>(symMap[m[1]]) << endl;
cout.rdbuf(origin);
cout << setw(16) << setfill('0') << bitset<8>(symMap[m[1]]);
cout << nouppercase << ' ' << setw(4) << hex << symMap[m[1]] << " ";
// cout.rdbuf(bin_buf); //
bitset<16> set(symMap[m[1]]);
save2bin = set.to_ulong();
to_bin.write((char *) &save2bin, sizeof(save2bin)/2);
}else{
cout.rdbuf(hack_buf);
cout << setw(16) << setfill('0') << bitset<8>(stoi(m[1])) << endl;
cout.rdbuf(origin);
cout << setw(16) << setfill('0') << bitset<8>(stoi(m[1]));
cout << nouppercase << ' ' << setw(4) << hex << stoi(m[1]) << " ";
// cout.rdbuf(bin_buf); //
save2bin = stoi(m[1]);
to_bin.write((char *) &save2bin, sizeof(save2bin)/2);
}
}
}else{
// C cmd
string d, js, comp, dcode, ccode, jcode;
// string::size_type loc = line.find("=",0);
if (line[1] == '='){
string::size_type loc = line.find("=",0);
d = line.substr(0, loc);
comp = line.substr(loc + 1, (sizeof(line)));
dcode = dMap[d];
ccode = cMap[comp];
// 111 7(dcode) 3(ccode) 000
cout.rdbuf(hack_buf);
cout << std::dec << 111 << setw(7) << setfill('0') << ccode << setw(3) << setfill('0') << dcode << setw(3) << 0 << endl;
cout.rdbuf(origin);
cout << std::dec << 111 << setw(7) << setfill('0') << ccode << setw(3) << setfill('0') << dcode << setw(3) << 0;
string binary_str("111"+ccode+dcode+"000");
bitset<16> set(binary_str);
cout << nouppercase << hex << " " << set.to_ulong() << " ";
// cout.rdbuf(bin_buf); //
save2bin = stoi(binary_str,0,2);
to_bin.write((char *) &save2bin, sizeof(save2bin)/2);
}else{
string::size_type loc = line.find(";",0);
comp = line.substr(0, loc);
js = line.substr(loc + 1, (sizeof(line)));
ccode = cMap[comp];
jcode = jMap[js];
// 111 7(dcode) 000 3(jcode)
cout.rdbuf(hack_buf);
cout << std::dec << 111 << setw(7) << setfill('0') << ccode << setw(3) << setfill('0') << 0 << jcode << endl;
cout.rdbuf(origin);
cout << std::dec << 111 << setw(7) << setfill('0') << ccode << setw(3) << setfill('0') << 0 << jcode;
string binary_str("111"+ccode+"000"+jcode);
bitset<16> set(binary_str);
cout << nouppercase << hex << " " << set.to_ulong() << " ";
// cout.rdbuf(bin_buf); //
save2bin = stoi(binary_str,0,2);
to_bin.write((char *) &save2bin, sizeof(save2bin)/2);
}
}
cout << endl;
(*counter)++;
}
}
}
void pass1(string inFile, string line, string save, int* counter){
cout << "============= PASS1 ================" << endl;
ifstream in;
in.open(inFile);
while (getline(in, line))
{
parse1(line, save, counter);
}
}
void pass2(string inFile, string line, string save, int* counter, streambuf *hack_buf, streambuf *bin_buf, streambuf *origin){
cout << "============= PASS2 ================" << endl;
ifstream in;
in.open(inFile);
while (getline(in, line))
{
parse2(line, save, counter, hack_buf, bin_buf, origin);
}
}
void assemble(string file) {
string line;
string save("");
string inFile(file+".asm");
string hackFile(file+".hack");
string binFile(file+".bin");
string a(file+".");
ifstream in;
in.open(inFile);
ofstream to_hack;
// ofstream to_bin; // 請見line:12
streambuf *hack_buf, *bin_buf, *origin;
to_hack.open(hackFile, ios::out | ios::trunc); //開啟檔案為輸出狀態，若檔案已存在則清除檔案內容重新寫入
to_bin.open(binFile,std::ofstream::binary);
origin = cout.rdbuf();
hack_buf = to_hack.rdbuf();
bin_buf = to_bin.rdbuf();
int counter = 0;
pass1(inFile, line, save, &counter);
counter = 0;
pass2(inFile, line, save, &counter, hack_buf, bin_buf, origin);
in.close();
to_hack.close();
to_bin.close();
}
int main(int argc, char *argv[]) {
assemble(argv[1]);
return 0;
}