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
|
#include <u.h>
#include <libc.h>
#include <bio.h>
#include "../7c/7.out.h"
#ifndef EXTERN
#define EXTERN extern
#endif
#define MAXALIGN 7
typedef struct Sym Sym;
typedef struct Ref Ref;
typedef struct Gen Gen;
typedef struct Io Io;
typedef struct Hist Hist;
#define FPCHIP 1
#define NSYMB 500
#define BUFSIZ 8192
#define HISTSZ 20
#define NINCLUDE 10
#define NHUNK 10000
#define EOF (-1)
#define IGN (-2)
#define GETC() ((--fi.c < 0)? filbuf(): *fi.p++ & 0xff)
#define NHASH 503
#define STRINGSZ 200
#define NMACRO 10
#define ALLOC(lhs, type)\
while(nhunk < sizeof(type))\
gethunk();\
lhs = (type*)hunk;\
nhunk -= sizeof(type);\
hunk += sizeof(type);
#define ALLOCN(lhs, len, n)\
if(lhs+len != hunk || nhunk < n) {\
while(nhunk <= len)\
gethunk();\
memmove(hunk, lhs, len);\
lhs = hunk;\
hunk += len;\
nhunk -= len;\
}\
hunk += n;\
nhunk -= n;
struct Sym
{
Sym* link;
Ref* ref;
char* macro;
vlong value;
long dummy_pad;
ushort type;
char *name;
char sym;
};
#define S ((Sym*)0)
struct Ref
{
int class;
};
struct
{
char* p;
int c;
} fi;
struct Io
{
Io* link;
char b[BUFSIZ];
char* p;
short c;
short f;
};
#define I ((Io*)0)
struct
{
Sym* sym;
short type;
} h[NSYM];
struct Gen
{
Sym* sym;
vlong offset;
long dummy_pad;
short type;
short reg;
short name;
double dval;
char sval[8];
};
struct Hist
{
Hist* link;
char* name;
long line;
vlong offset;
};
#define H ((Hist*)0)
enum
{
CLAST,
CMACARG,
CMACRO,
CPREPROC,
};
char debug[256];
Sym* hash[NHASH];
char* Dlist[30];
int nDlist;
Hist* ehist;
int newflag;
Hist* hist;
char* hunk;
char* include[NINCLUDE];
Io* iofree;
Io* ionext;
Io* iostack;
long lineno;
int nerrors;
long nhunk;
int ninclude;
Gen nullgen;
char* outfile;
int pass;
char* pathname;
vlong pc;
int peekc;
int sym;
char symb[NSYMB];
int thechar;
char* thestring;
long thunk;
Biobuf obuf;
void errorexit(void);
void pushio(void);
void newio(void);
void newfile(char*, int);
Sym* slookup(char*);
Sym* lookup(void);
void syminit(Sym*);
long yylex(void);
int getc(void);
int getnsc(void);
void unget(int);
int escchar(int);
void cinit(void);
void pinit(char*);
void cclean(void);
int isreg(Gen*);
void outcode(int, Gen*, int, Gen*);
void zname(char*, int, int);
void zaddr(Gen*, int);
void ieeedtod(Ieee*, double);
int filbuf(void);
Sym* getsym(void);
void domacro(void);
void macund(void);
void macdef(void);
void macexpand(Sym*, char*);
void macinc(void);
void maclin(void);
void macprag(void);
void macif(int);
void macend(void);
void outhist(void);
void dodefine(char*);
void prfile(long);
void linehist(char*, int);
void gethunk(void);
void yyerror(char*, ...);
int yyparse(void);
void setinclude(char*);
int assemble(char*);
/*
* system-dependent stuff from ../cc/compat.c
*/
enum /* keep in synch with ../cc/cc.h */
{
Plan9 = 1<<0,
Unix = 1<<1,
Windows = 1<<2,
};
int mywait(int*);
int mycreat(char*, int);
int systemtype(int);
int pathchar(void);
char* mygetwd(char*, int);
int myexec(char*, char*[]);
int mydup(int, int);
int myfork(void);
int mypipe(int*);
void* mysbrk(ulong);
|
