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
|
/*
* mrustc Standalone MIRI
* - by John Hodge (Mutabah)
*
* main.cpp
* - Program entrypoint
*/
#include <iostream>
#include "module_tree.hpp"
#include "value.hpp"
#include <algorithm>
#include <iomanip>
#include "debug.hpp"
#include "miri.hpp"
struct ProgramOptions
{
::std::string infile;
//TODO: Architecture file
//::std::string archname;
//TODO: Loadable FFI descriptions
//::std::vector<const char*> ffi_api_files;
// Output logfile
::std::string logfile;
// Arguments for the program
::std::vector<const char*> args;
int parse(int argc, const char* argv[]);
void show_help(const char* prog) const;
};
int main(int argc, const char* argv[])
{
ProgramOptions opts;
if( opts.parse(argc, argv) )
{
return 1;
}
// Configure logging
if( opts.logfile != "" )
{
DebugSink::set_output_file(opts.logfile);
}
// Load HIR tree
auto tree = ModuleTree {};
try
{
tree.load_file(opts.infile);
tree.validate();
}
catch(const DebugExceptionTodo& /*e*/)
{
::std::cerr << "TODO Hit" << ::std::endl;
if(opts.logfile != "")
{
::std::cerr << "- See '" << opts.logfile << "' for details" << ::std::endl;
}
return 1;
}
catch(const DebugExceptionError& /*e*/)
{
::std::cerr << "Error encountered" << ::std::endl;
if(opts.logfile != "")
{
::std::cerr << "- See '" << opts.logfile << "' for details" << ::std::endl;
}
return 1;
}
// Create argc/argv based on input arguments
auto argv_alloc = Allocation::new_alloc((1 + opts.args.size()) * POINTER_SIZE, "argv");
argv_alloc->write_usize(0 * POINTER_SIZE, Allocation::PTR_BASE);
argv_alloc->relocations.push_back({ 0 * POINTER_SIZE, RelocationPtr::new_ffi(FFIPointer::new_const_bytes("argv0", opts.infile.c_str(), opts.infile.size() + 1)) });
for(size_t i = 0; i < opts.args.size(); i ++)
{
argv_alloc->write_usize((1 + i) * POINTER_SIZE, Allocation::PTR_BASE);
argv_alloc->relocations.push_back({ (1 + i) * POINTER_SIZE, RelocationPtr::new_ffi(FFIPointer::new_const_bytes("argv", opts.args[i], ::std::strlen(opts.args[i]) + 1)) });
}
LOG_DEBUG("argv_alloc = " << *argv_alloc);
// Construct argc/argv values
auto val_argc = Value::new_isize(1 + opts.args.size());
auto argv_ty = ::HIR::TypeRef(RawType::I8).wrap(TypeWrapper::Ty::Pointer, 0 ).wrap(TypeWrapper::Ty::Pointer, 0);
auto val_argv = Value::new_pointer(argv_ty, Allocation::PTR_BASE, RelocationPtr::new_alloc(argv_alloc));
// Catch various exceptions from the interpreter
try
{
InterpreterThread root_thread(tree);
::std::vector<Value> args;
args.push_back(::std::move(val_argc));
args.push_back(::std::move(val_argv));
Value rv;
root_thread.start(tree.find_lang_item("start"), ::std::move(args));
while( !root_thread.step_one(rv) )
{
}
LOG_NOTICE("Return code: " << rv);
}
catch(const DebugExceptionTodo& /*e*/)
{
::std::cerr << "TODO Hit" << ::std::endl;
if(opts.logfile != "")
{
::std::cerr << "- See '" << opts.logfile << "' for details" << ::std::endl;
}
return 1;
}
catch(const DebugExceptionError& /*e*/)
{
::std::cerr << "Error encountered" << ::std::endl;
if(opts.logfile != "")
{
::std::cerr << "- See '" << opts.logfile << "' for details" << ::std::endl;
}
return 1;
}
return 0;
}
int ProgramOptions::parse(int argc, const char* argv[])
{
bool all_free = false;
// TODO: use getopt? POSIX only
for(int argidx = 1; argidx < argc; argidx ++)
{
const char* arg = argv[argidx];
if( arg[0] != '-' || all_free )
{
// Free arguments
// - First is the input file
if( this->infile == "" )
{
this->infile = arg;
}
else
{
// Any subsequent arguments are passed to the taget
this->args.push_back(arg);
}
}
else if( arg[1] != '-' )
{
// Short arguments
if( arg[2] != '\0' ) {
// Error?
::std::cerr << "Unexpected option " << arg << ::std::endl;
return 1;
}
switch(arg[1])
{
case 'h':
this->show_help(argv[0]);
exit(0);
default:
::std::cerr << "Unexpected option -" << arg[1] << ::std::endl;
return 1;
}
}
else if( arg[2] != '\0' )
{
// Long
if( ::std::strcmp(arg, "--help") == 0 ) {
this->show_help(argv[0]);
exit(0);
}
else if( ::std::strcmp(arg, "--logfile") == 0 ) {
if( argidx + 1 == argc ) {
::std::cerr << "Option " << arg << " requires an argument" << ::std::endl;
return 1;
}
const char* opt = argv[++argidx];
this->logfile = opt;
}
//else if( ::std::strcmp(arg, "--api") == 0 ) {
//}
else {
::std::cerr << "Unexpected option " << arg << ::std::endl;
return 1;
}
}
else
{
all_free = true;
}
}
return 0;
}
void ProgramOptions::show_help(const char* prog) const
{
::std::cout << "USAGE: " << prog << " <infile> <... args>" << ::std::endl;
}
|
