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
|
#include <sys/stat.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <builder.h>
#include <da.h>
#include "assembler.h"
#include "cerr.h"
#include "common.h"
#include "lexer.h"
#include "macros.h"
#include "parser.h"
static void asmfile(int, const char *);
size_t filesize;
const char *filename;
const char8_t *baseptr;
struct u8view filebuf;
int
main(int argc, char **argv)
{
int opt;
const struct option longopts[] = {
{"help", no_argument, nullptr, 'h'},
{nullptr, no_argument, nullptr, 0 },
};
cerrinit(*argv);
while ((opt = getopt_long(argc, argv, "h", longopts, nullptr)) != -1) {
switch (opt) {
case 'h':
execlp("man", "man", "1", argv[0], nullptr);
die("execlp: man 1 %s", argv[0]);
default:
fprintf(stderr,
"Usage: %s [file ...]\n"
" %s -h\n",
argv[0], argv[0]);
exit(EXIT_FAILURE);
}
}
argc -= optind;
argv += optind;
if (!argc)
asmfile(STDIN_FILENO, "-");
for (int i = 0; i < argc; i++) {
if (streq("-", argv[i]))
asmfile(STDIN_FILENO, "-");
else {
int fd;
if ((fd = open(argv[i], O_RDONLY)) == -1)
die("open: %s", argv[i]);
asmfile(fd, argv[i]);
close(fd);
}
}
return EXIT_SUCCESS;
}
void
asmfile(int fd, const char *fn)
{
char *buf;
size_t blksize;
ssize_t nr;
struct ast ast;
struct stat st;
struct u8str sb;
struct tokens toks;
filename = fn;
if (fstat(fd, &st) == -1)
die("fstat: %s", filename);
blksize = MAX(st.st_blksize, BUFSIZ);
if (!(buf = malloc(blksize)))
die("malloc");
/* Load the contents of the file into sb */
u8strinit(&sb, S_ISREG(st.st_mode) ? (size_t)st.st_size : blksize);
while ((nr = read(fd, buf, blksize)) > 0) {
struct u8view v = {
.p = buf,
.len = nr,
};
if (!u8strpush(&sb, v))
die("u8strpush");
}
if (nr == -1)
die("read: %s", filename);
free(buf);
filesize = sb.len;
filebuf = u8strtou8(sb);
baseptr = u8strfit(&sb)->p;
assemble(stdout, ast = parsefile(toks = lexfile()));
da_foreach (&ast, node) {
if (node->kind == D_INSTR && node->instr.kind == I_DB)
free(node->instr.buf);
}
free(toks.buf);
free(ast.buf);
u8strfree(sb);
}
|
