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
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
|
/* genbin.c - binary code generation routines for assembler */
#include "syshead.h"
#include "const.h"
#include "type.h"
#include "address.h"
#include "file.h"
#include "globvar.h"
#ifdef USE_FIXED_HEAP
PRIVATE char *asmbeg; /* beginning of assembler code */
/* for overwrite check */
/* bss-init to zero = NULL and not changed */
#endif
/* Sneaky stuff, the start of a binary file can be _negative_ for the I80386
assembler. The -ve addresses are ones over 2GB (or "org -32") */
#ifdef I80386
PRIVATE soffset_t binfbuf; /* binary code buffer for file (counter) */
PRIVATE soffset_t binmax; /* maximum value of binmbuf for pass 1 */
PRIVATE soffset_t binmin; /* minimum value of binmbuf for pass 1 */
#define PT soffset_t
#else
PRIVATE offset_t binfbuf; /* binary code buffer for file (counter) */
PRIVATE offset_t binmax; /* maximum value of binmbuf for pass 1 */
PRIVATE offset_t binmin; /* minimum value of binmbuf for pass 1 */
#define PT offset_t
#endif
FORWARD void putbinoffset P((offset_t offset, count_t size));
/* write header to binary file */
PUBLIC void binheader()
{
#ifdef BINSYM
if ((outfd = binfil) != 0x0 && binmbuf_set && binmax >= binmin)
{
writec(0x0); /* binary header byte */
#ifdef LONG_BINHEADER
writeoff(binmax - binmin); /* program length */
writeoff(binfbuf = binmin); /* program start */
#else
writew((unsigned) (binmax - binmin)); /* program length */
writew((unsigned) (binfbuf = binmin)); /* program start */
#endif
}
#else
if ( ( outfd = symfil ) && binmbuf_set && binmax >= binmin)
{
int sft;
writec('+'); writec(' ');
for(sft=SIZEOF_OFFSET_T*8-4; sft >= 0; sft-=4)
writec(hexdigit[(binmin>>sft) & 0xF]);
writesn(" ----- $start");
writec('+'); writec(' ');
for(sft=SIZEOF_OFFSET_T*8-4; sft >= 0; sft-=4)
writec(hexdigit[(binmax>>sft) & 0xF]);
writesn(" ----- $end");
binfbuf = binmin; /* program start */
}
#endif
}
/* write trailer to binary file */
PUBLIC void bintrailer()
{
#ifdef BINSYM
if ((outfd = binfil) != 0x0 && (pedata & UNDBIT) != UNDBIT && binmbuf_set)
{
writec(0xFF); /* binary trailer byte */
writew(0x0); /* further trailer bytes */
#ifdef LONG_BINHEADER
writeoff(pedata & UNDBIT ? binmin : progent); /* entry point */
#else
writew(pedata & UNDBIT ? (unsigned) binmin : (unsigned) progent);
#endif
}
#endif
}
/* generate binary code for current line */
PUBLIC void genbin()
{
struct address_s *adrptr;
char *bufptr;
unsigned char remaining;
if (binaryg && mcount != 0x0)
{
if (popflags)
{
if (fcflag)
{
bufptr = databuf.fcbuf;
remaining = mcount;
do
putbin(*bufptr++);
while (--remaining != 0x0);
}
if (fdflag)
{
adrptr = databuf.fdbuf;
remaining = mcount;
do
{
putbinoffset(adrptr->offset, 0x2);
++adrptr;
}
while ((remaining -= 0x2) != 0x0);
}
#if SIZEOF_OFFSET_T > 0x2
if (fqflag)
{
adrptr = databuf.fqbuf;
remaining = mcount;
do
{
putbinoffset(adrptr->offset, 0x4);
++adrptr;
}
while ((remaining -= 0x4) != 0x0);
}
#endif
}
else
{
remaining = mcount - 0x1; /* count opcode immediately */
#ifdef I80386
if (aprefix != 0x0)
{
putbin(aprefix);
--remaining;
}
if (oprefix != 0x0)
{
putbin(oprefix);
--remaining;
}
if (sprefix != 0x0)
{
putbin(sprefix);
--remaining;
}
#endif
if (page != 0x0)
{
putbin(page);
--remaining;
}
putbin(opcode);
if (remaining != 0x0)
{
if (postb != 0x0)
{
putbin(postb);
--remaining;
}
#ifdef I80386
if (sib != NO_SIB)
{
putbin(sib);
--remaining;
}
#endif
if (remaining != 0x0)
putbinoffset(lastexp.offset, remaining);
}
#ifdef I80386
if (immcount != 0x0)
putbinoffset(immadr.offset, immcount);
#endif
}
/* else no code for this instruction, or already generated */
}
}
/* initialise private variables */
PUBLIC void initbin()
{
#ifdef I80386
binmin = ((offset_t)-1 >>1); /* greater than anything */
#else
binmin = -1; /* greater than anything */
#endif
}
/* write char to binary file or directly to memory */
PUBLIC void putbin(ch)
opcode_pt ch;
{
if (binfil != 0x0)
{
if (!binaryc) /* pass 1, just record limits */
{
if ((PT)binmbuf < binmin)
binmin = binmbuf;
binmbuf++;
if ((PT)binmbuf > binmax)
binmax = binmbuf;
}
else
{
#if 0
if (binfbuf > (PT)binmbuf)
{
error(BWRAP); /* file buffer ahead of memory buffer */
}
else
#endif
{
#ifdef MSDOS
static PT zapptr = 0;
#endif
outfd = binfil;
#ifdef MSDOS
while (binfbuf < (PT)binmbuf && binfbuf >= zapptr+binmin)
{
writec(0);
++binfbuf;
++zapptr;
}
#endif
if( binfbuf != (PT)binmbuf)
if( lseek(binfil, (long)((PT)binmbuf-binfbuf), 1) < 0 )
error(BWRAP);
binfbuf = binmbuf;
writec(ch);
binmbuf = ++binfbuf;
}
}
}
#ifdef USE_FIXED_HEAP
else if (binaryc && !(lcdata & UNDBIT))
/* memory output, and enabled */
{
register char *bufptr;
if ((bufptr = (char *) binmbuf) >= asmbeg && bufptr < temp_buf())
error(OWRITE);
else
*bufptr = ch;
++binmbuf;
}
#endif
}
/* write sized offset to binary file or directly to memory */
PRIVATE void putbinoffset(offset, size)
offset_t offset;
count_t size;
{
char buf[sizeof offset];
#if SIZEOF_OFFSET_T > 0x2
u4cn(buf, offset, size);
#else
u2cn(buf, offset, size);
#endif
putbin(buf[0]);
if (size > 0x1)
putbin(buf[1]);
if (size > 0x2)
{
putbin(buf[2]);
putbin(buf[3]);
}
}
|
