Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ns32k.c -- Assemble on the National Semiconductor 32k series |
93c2a809 | 2 | Copyright 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
aef6203b | 3 | 2001, 2002, 2003, 2005 |
310b5aa2 | 4 | Free Software Foundation, Inc. |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
21 | 02111-1307, USA. */ | |
22 | ||
c6a7ab1f | 23 | /*#define SHOW_NUM 1*//* Uncomment for debugging. */ |
252b5132 RH |
24 | |
25 | #include <stdio.h> | |
252b5132 RH |
26 | |
27 | #include "as.h" | |
28 | #include "opcode/ns32k.h" | |
29 | ||
30 | #include "obstack.h" | |
31 | ||
c6a7ab1f NC |
32 | /* Macros. */ |
33 | #define IIF_ENTRIES 13 /* Number of entries in iif. */ | |
34 | #define PRIVATE_SIZE 256 /* Size of my garbage memory. */ | |
252b5132 RH |
35 | #define MAX_ARGS 4 |
36 | #define DEFAULT -1 /* addr_mode returns this value when | |
37 | plain constant or label is | |
c6a7ab1f | 38 | encountered. */ |
252b5132 RH |
39 | |
40 | #define IIF(ptr,a1,c1,e1,g1,i1,k1,m1,o1,q1,s1,u1) \ | |
ea1562b3 NC |
41 | iif.iifP[ptr].type = a1; \ |
42 | iif.iifP[ptr].size = c1; \ | |
43 | iif.iifP[ptr].object = e1; \ | |
44 | iif.iifP[ptr].object_adjust = g1; \ | |
45 | iif.iifP[ptr].pcrel = i1; \ | |
46 | iif.iifP[ptr].pcrel_adjust = k1; \ | |
47 | iif.iifP[ptr].im_disp = m1; \ | |
48 | iif.iifP[ptr].relax_substate = o1; \ | |
49 | iif.iifP[ptr].bit_fixP = q1; \ | |
50 | iif.iifP[ptr].addr_mode = s1; \ | |
51 | iif.iifP[ptr].bsr = u1; | |
252b5132 RH |
52 | |
53 | #ifdef SEQUENT_COMPATABILITY | |
54 | #define LINE_COMMENT_CHARS "|" | |
55 | #define ABSOLUTE_PREFIX '@' | |
56 | #define IMMEDIATE_PREFIX '#' | |
57 | #endif | |
58 | ||
59 | #ifndef LINE_COMMENT_CHARS | |
60 | #define LINE_COMMENT_CHARS "#" | |
61 | #endif | |
62 | ||
63 | const char comment_chars[] = "#"; | |
64 | const char line_comment_chars[] = LINE_COMMENT_CHARS; | |
63a0b638 | 65 | const char line_separator_chars[] = ";"; |
4eb6b71c | 66 | static int default_disp_size = 4; /* Displacement size for external refs. */ |
c6a7ab1f | 67 | |
252b5132 | 68 | #if !defined(ABSOLUTE_PREFIX) && !defined(IMMEDIATE_PREFIX) |
4eb6b71c | 69 | #define ABSOLUTE_PREFIX '@' /* One or the other MUST be defined. */ |
252b5132 RH |
70 | #endif |
71 | ||
72 | struct addr_mode | |
ea1562b3 NC |
73 | { |
74 | signed char mode; /* Addressing mode of operand (0-31). */ | |
75 | signed char scaled_mode; /* Mode combined with scaled mode. */ | |
76 | char scaled_reg; /* Register used in scaled+1 (1-8). */ | |
77 | char float_flag; /* Set if R0..R7 was F0..F7 ie a | |
4eb6b71c | 78 | floating-point-register. */ |
ea1562b3 | 79 | char am_size; /* Estimated max size of general addr-mode |
4eb6b71c | 80 | parts. */ |
ea1562b3 NC |
81 | char im_disp; /* If im_disp==1 we have a displacement. */ |
82 | char pcrel; /* 1 if pcrel, this is really redundant info. */ | |
83 | char disp_suffix[2]; /* Length of displacement(s), 0=undefined. */ | |
84 | char *disp[2]; /* Pointer(s) at displacement(s) | |
4eb6b71c | 85 | or immediates(s) (ascii). */ |
ea1562b3 NC |
86 | char index_byte; /* Index byte. */ |
87 | }; | |
252b5132 RH |
88 | typedef struct addr_mode addr_modeS; |
89 | ||
c6a7ab1f | 90 | char *freeptr, *freeptr_static; /* Points at some number of free bytes. */ |
252b5132 RH |
91 | struct hash_control *inst_hash_handle; |
92 | ||
c6a7ab1f | 93 | struct ns32k_opcode *desc; /* Pointer at description of instruction. */ |
252b5132 RH |
94 | addr_modeS addr_modeP; |
95 | const char EXP_CHARS[] = "eE"; | |
c6a7ab1f NC |
96 | const char FLT_CHARS[] = "fd"; /* We don't want to support lowercase, |
97 | do we? */ | |
252b5132 RH |
98 | |
99 | /* UPPERCASE denotes live names when an instruction is built, IIF is | |
4eb6b71c NC |
100 | used as an intermediate form to store the actual parts of the |
101 | instruction. A ns32k machine instruction can be divided into a | |
102 | couple of sub PARTs. When an instruction is assembled the | |
103 | appropriate PART get an assignment. When an IIF has been completed | |
104 | it is converted to a FRAGment as specified in AS.H. */ | |
252b5132 | 105 | |
c6a7ab1f | 106 | /* Internal structs. */ |
252b5132 | 107 | struct ns32k_option |
c6a7ab1f NC |
108 | { |
109 | char *pattern; | |
110 | unsigned long or; | |
111 | unsigned long and; | |
112 | }; | |
252b5132 RH |
113 | |
114 | typedef struct | |
ea1562b3 NC |
115 | { |
116 | int type; /* How to interpret object. */ | |
117 | int size; /* Estimated max size of object. */ | |
118 | unsigned long object; /* Binary data. */ | |
119 | int object_adjust; /* Number added to object. */ | |
120 | int pcrel; /* True if object is pcrel. */ | |
121 | int pcrel_adjust; /* Length in bytes from the instruction | |
4eb6b71c | 122 | start to the displacement. */ |
ea1562b3 NC |
123 | int im_disp; /* True if the object is a displacement. */ |
124 | relax_substateT relax_substate;/*Initial relaxsubstate. */ | |
125 | bit_fixS *bit_fixP; /* Pointer at bit_fix struct. */ | |
126 | int addr_mode; /* What addrmode do we associate with this | |
4eb6b71c | 127 | iif-entry. */ |
ea1562b3 NC |
128 | char bsr; /* Sequent hack. */ |
129 | } iif_entryT; /* Internal Instruction Format. */ | |
252b5132 RH |
130 | |
131 | struct int_ins_form | |
ea1562b3 NC |
132 | { |
133 | int instr_size; /* Max size of instruction in bytes. */ | |
134 | iif_entryT iifP[IIF_ENTRIES + 1]; | |
135 | }; | |
c6a7ab1f | 136 | |
252b5132 RH |
137 | struct int_ins_form iif; |
138 | expressionS exprP; | |
139 | char *input_line_pointer; | |
c6a7ab1f NC |
140 | |
141 | /* Description of the PARTs in IIF | |
142 | object[n]: | |
143 | 0 total length in bytes of entries in iif | |
144 | 1 opcode | |
145 | 2 index_byte_a | |
146 | 3 index_byte_b | |
147 | 4 disp_a_1 | |
148 | 5 disp_a_2 | |
149 | 6 disp_b_1 | |
150 | 7 disp_b_2 | |
151 | 8 imm_a | |
152 | 9 imm_b | |
153 | 10 implied1 | |
154 | 11 implied2 | |
0b7410c4 | 155 | |
c6a7ab1f NC |
156 | For every entry there is a datalength in bytes. This is stored in size[n]. |
157 | 0, the objectlength is not explicitly given by the instruction | |
158 | and the operand is undefined. This is a case for relaxation. | |
159 | Reserve 4 bytes for the final object. | |
0b7410c4 | 160 | |
c6a7ab1f NC |
161 | 1, the entry contains one byte |
162 | 2, the entry contains two bytes | |
163 | 3, the entry contains three bytes | |
164 | 4, the entry contains four bytes | |
165 | etc | |
0b7410c4 | 166 | |
c6a7ab1f | 167 | Furthermore, every entry has a data type identifier in type[n]. |
0b7410c4 | 168 | |
c6a7ab1f NC |
169 | 0, the entry is void, ignore it. |
170 | 1, the entry is a binary number. | |
171 | 2, the entry is a pointer at an expression. | |
172 | Where expression may be as simple as a single '1', | |
173 | and as complicated as foo-bar+12, | |
174 | foo and bar may be undefined but suffixed by :{b|w|d} to | |
175 | control the length of the object. | |
0b7410c4 | 176 | |
c6a7ab1f | 177 | 3, the entry is a pointer at a bignum struct |
0b7410c4 | 178 | |
67c1ffbe | 179 | The low-order-byte corresponds to low physical memory. |
c6a7ab1f NC |
180 | Obviously a FRAGment must be created for each valid disp in PART whose |
181 | datalength is undefined (to bad) . | |
182 | The case where just the expression is undefined is less severe and is | |
183 | handled by fix. Here the number of bytes in the objectfile is known. | |
184 | With this representation we simplify the assembly and separates the | |
185 | machine dependent/independent parts in a more clean way (said OE). */ | |
252b5132 | 186 | \f |
4eb6b71c | 187 | struct ns32k_option opt1[] = /* restore, exit. */ |
252b5132 RH |
188 | { |
189 | {"r0", 0x80, 0xff}, | |
190 | {"r1", 0x40, 0xff}, | |
191 | {"r2", 0x20, 0xff}, | |
192 | {"r3", 0x10, 0xff}, | |
193 | {"r4", 0x08, 0xff}, | |
194 | {"r5", 0x04, 0xff}, | |
195 | {"r6", 0x02, 0xff}, | |
196 | {"r7", 0x01, 0xff}, | |
197 | {0, 0x00, 0xff} | |
198 | }; | |
4eb6b71c | 199 | struct ns32k_option opt2[] = /* save, enter. */ |
252b5132 RH |
200 | { |
201 | {"r0", 0x01, 0xff}, | |
202 | {"r1", 0x02, 0xff}, | |
203 | {"r2", 0x04, 0xff}, | |
204 | {"r3", 0x08, 0xff}, | |
205 | {"r4", 0x10, 0xff}, | |
206 | {"r5", 0x20, 0xff}, | |
207 | {"r6", 0x40, 0xff}, | |
208 | {"r7", 0x80, 0xff}, | |
209 | {0, 0x00, 0xff} | |
210 | }; | |
4eb6b71c | 211 | struct ns32k_option opt3[] = /* setcfg. */ |
252b5132 RH |
212 | { |
213 | {"c", 0x8, 0xff}, | |
214 | {"m", 0x4, 0xff}, | |
215 | {"f", 0x2, 0xff}, | |
216 | {"i", 0x1, 0xff}, | |
217 | {0, 0x0, 0xff} | |
218 | }; | |
4eb6b71c | 219 | struct ns32k_option opt4[] = /* cinv. */ |
252b5132 RH |
220 | { |
221 | {"a", 0x4, 0xff}, | |
222 | {"i", 0x2, 0xff}, | |
223 | {"d", 0x1, 0xff}, | |
224 | {0, 0x0, 0xff} | |
225 | }; | |
4eb6b71c | 226 | struct ns32k_option opt5[] = /* String inst. */ |
252b5132 RH |
227 | { |
228 | {"b", 0x2, 0xff}, | |
229 | {"u", 0xc, 0xff}, | |
230 | {"w", 0x4, 0xff}, | |
231 | {0, 0x0, 0xff} | |
232 | }; | |
4eb6b71c | 233 | struct ns32k_option opt6[] = /* Plain reg ext,cvtp etc. */ |
252b5132 RH |
234 | { |
235 | {"r0", 0x00, 0xff}, | |
236 | {"r1", 0x01, 0xff}, | |
237 | {"r2", 0x02, 0xff}, | |
238 | {"r3", 0x03, 0xff}, | |
239 | {"r4", 0x04, 0xff}, | |
240 | {"r5", 0x05, 0xff}, | |
241 | {"r6", 0x06, 0xff}, | |
242 | {"r7", 0x07, 0xff}, | |
243 | {0, 0x00, 0xff} | |
244 | }; | |
245 | ||
246 | #if !defined(NS32032) && !defined(NS32532) | |
247 | #define NS32532 | |
248 | #endif | |
249 | ||
4eb6b71c | 250 | struct ns32k_option cpureg_532[] = /* lpr spr. */ |
252b5132 RH |
251 | { |
252 | {"us", 0x0, 0xff}, | |
253 | {"dcr", 0x1, 0xff}, | |
254 | {"bpc", 0x2, 0xff}, | |
255 | {"dsr", 0x3, 0xff}, | |
256 | {"car", 0x4, 0xff}, | |
257 | {"fp", 0x8, 0xff}, | |
258 | {"sp", 0x9, 0xff}, | |
259 | {"sb", 0xa, 0xff}, | |
260 | {"usp", 0xb, 0xff}, | |
261 | {"cfg", 0xc, 0xff}, | |
262 | {"psr", 0xd, 0xff}, | |
263 | {"intbase", 0xe, 0xff}, | |
264 | {"mod", 0xf, 0xff}, | |
265 | {0, 0x00, 0xff} | |
266 | }; | |
4eb6b71c | 267 | struct ns32k_option mmureg_532[] = /* lmr smr. */ |
252b5132 RH |
268 | { |
269 | {"mcr", 0x9, 0xff}, | |
270 | {"msr", 0xa, 0xff}, | |
271 | {"tear", 0xb, 0xff}, | |
272 | {"ptb0", 0xc, 0xff}, | |
273 | {"ptb1", 0xd, 0xff}, | |
274 | {"ivar0", 0xe, 0xff}, | |
275 | {"ivar1", 0xf, 0xff}, | |
276 | {0, 0x0, 0xff} | |
277 | }; | |
278 | ||
4eb6b71c | 279 | struct ns32k_option cpureg_032[] = /* lpr spr. */ |
252b5132 RH |
280 | { |
281 | {"upsr", 0x0, 0xff}, | |
282 | {"fp", 0x8, 0xff}, | |
283 | {"sp", 0x9, 0xff}, | |
284 | {"sb", 0xa, 0xff}, | |
285 | {"psr", 0xd, 0xff}, | |
286 | {"intbase", 0xe, 0xff}, | |
287 | {"mod", 0xf, 0xff}, | |
288 | {0, 0x0, 0xff} | |
289 | }; | |
4eb6b71c | 290 | struct ns32k_option mmureg_032[] = /* lmr smr. */ |
252b5132 RH |
291 | { |
292 | {"bpr0", 0x0, 0xff}, | |
293 | {"bpr1", 0x1, 0xff}, | |
294 | {"pf0", 0x4, 0xff}, | |
295 | {"pf1", 0x5, 0xff}, | |
296 | {"sc", 0x8, 0xff}, | |
297 | {"msr", 0xa, 0xff}, | |
298 | {"bcnt", 0xb, 0xff}, | |
299 | {"ptb0", 0xc, 0xff}, | |
300 | {"ptb1", 0xd, 0xff}, | |
301 | {"eia", 0xf, 0xff}, | |
302 | {0, 0x0, 0xff} | |
303 | }; | |
304 | ||
305 | #if defined(NS32532) | |
306 | struct ns32k_option *cpureg = cpureg_532; | |
307 | struct ns32k_option *mmureg = mmureg_532; | |
308 | #else | |
309 | struct ns32k_option *cpureg = cpureg_032; | |
310 | struct ns32k_option *mmureg = mmureg_032; | |
311 | #endif | |
312 | \f | |
313 | ||
314 | const pseudo_typeS md_pseudo_table[] = | |
c6a7ab1f | 315 | { /* So far empty. */ |
252b5132 RH |
316 | {0, 0, 0} |
317 | }; | |
318 | ||
319 | #define IND(x,y) (((x)<<2)+(y)) | |
320 | ||
c6a7ab1f | 321 | /* Those are index's to relax groups in md_relax_table ie it must be |
252b5132 | 322 | multiplied by 4 to point at a group start. Viz IND(x,y) Se function |
c6a7ab1f | 323 | relax_segment in write.c for more info. */ |
252b5132 RH |
324 | |
325 | #define BRANCH 1 | |
326 | #define PCREL 2 | |
327 | ||
c6a7ab1f | 328 | /* Those are index's to entries in a relax group. */ |
252b5132 RH |
329 | |
330 | #define BYTE 0 | |
331 | #define WORD 1 | |
332 | #define DOUBLE 2 | |
333 | #define UNDEF 3 | |
334 | /* Those limits are calculated from the displacement start in memory. | |
67c1ffbe | 335 | The ns32k uses the beginning of the instruction as displacement |
252b5132 RH |
336 | base. This type of displacements could be handled here by moving |
337 | the limit window up or down. I choose to use an internal | |
338 | displacement base-adjust as there are other routines that must | |
339 | consider this. Also, as we have two various offset-adjusts in the | |
340 | ns32k (acb versus br/brs/jsr/bcond), two set of limits would have | |
c6a7ab1f | 341 | had to be used. Now we dont have to think about that. */ |
252b5132 RH |
342 | |
343 | const relax_typeS md_relax_table[] = | |
344 | { | |
345 | {1, 1, 0, 0}, | |
346 | {1, 1, 0, 0}, | |
347 | {1, 1, 0, 0}, | |
348 | {1, 1, 0, 0}, | |
349 | ||
350 | {(63), (-64), 1, IND (BRANCH, WORD)}, | |
351 | {(8192), (-8192), 2, IND (BRANCH, DOUBLE)}, | |
352 | {0, 0, 4, 0}, | |
353 | {1, 1, 0, 0} | |
354 | }; | |
355 | ||
356 | /* Array used to test if mode contains displacements. | |
c6a7ab1f | 357 | Value is true if mode contains displacement. */ |
252b5132 RH |
358 | |
359 | char disp_test[] = | |
360 | {0, 0, 0, 0, 0, 0, 0, 0, | |
361 | 1, 1, 1, 1, 1, 1, 1, 1, | |
362 | 1, 1, 1, 0, 0, 1, 1, 0, | |
363 | 1, 1, 1, 1, 1, 1, 1, 1}; | |
364 | ||
c6a7ab1f | 365 | /* Array used to calculate max size of displacements. */ |
252b5132 RH |
366 | |
367 | char disp_size[] = | |
368 | {4, 1, 2, 0, 4}; | |
369 | \f | |
c6a7ab1f NC |
370 | /* Parse a general operand into an addressingmode struct |
371 | ||
372 | In: pointer at operand in ascii form | |
373 | pointer at addr_mode struct for result | |
374 | the level of recursion. (always 0 or 1) | |
252b5132 | 375 | |
c6a7ab1f | 376 | Out: data in addr_mode struct. */ |
252b5132 | 377 | |
4eb6b71c | 378 | static int |
ea1562b3 NC |
379 | addr_mode (char *operand, |
380 | addr_modeS *addr_modeP, | |
381 | int recursive_level) | |
252b5132 | 382 | { |
4eb6b71c NC |
383 | char *str; |
384 | int i; | |
385 | int strl; | |
386 | int mode; | |
252b5132 | 387 | int j; |
0b7410c4 | 388 | |
4eb6b71c NC |
389 | mode = DEFAULT; /* Default. */ |
390 | addr_modeP->scaled_mode = 0; /* Why not. */ | |
391 | addr_modeP->scaled_reg = 0; /* If 0, not scaled index. */ | |
252b5132 RH |
392 | addr_modeP->float_flag = 0; |
393 | addr_modeP->am_size = 0; | |
394 | addr_modeP->im_disp = 0; | |
4eb6b71c | 395 | addr_modeP->pcrel = 0; /* Not set in this function. */ |
252b5132 RH |
396 | addr_modeP->disp_suffix[0] = 0; |
397 | addr_modeP->disp_suffix[1] = 0; | |
398 | addr_modeP->disp[0] = NULL; | |
399 | addr_modeP->disp[1] = NULL; | |
400 | str = operand; | |
0b7410c4 | 401 | |
252b5132 | 402 | if (str[0] == 0) |
c6a7ab1f NC |
403 | return 0; |
404 | ||
252b5132 | 405 | strl = strlen (str); |
0b7410c4 | 406 | |
252b5132 RH |
407 | switch (str[0]) |
408 | { | |
c6a7ab1f NC |
409 | /* The following three case statements controls the mode-chars |
410 | this is the place to ed if you want to change them. */ | |
252b5132 RH |
411 | #ifdef ABSOLUTE_PREFIX |
412 | case ABSOLUTE_PREFIX: | |
413 | if (str[strl - 1] == ']') | |
414 | break; | |
415 | addr_modeP->mode = 21; /* absolute */ | |
416 | addr_modeP->disp[0] = str + 1; | |
c6a7ab1f | 417 | return -1; |
252b5132 RH |
418 | #endif |
419 | #ifdef IMMEDIATE_PREFIX | |
420 | case IMMEDIATE_PREFIX: | |
421 | if (str[strl - 1] == ']') | |
422 | break; | |
423 | addr_modeP->mode = 20; /* immediate */ | |
424 | addr_modeP->disp[0] = str + 1; | |
c6a7ab1f | 425 | return -1; |
252b5132 RH |
426 | #endif |
427 | case '.': | |
428 | if (str[strl - 1] != ']') | |
429 | { | |
430 | switch (str[1]) | |
431 | { | |
432 | case '-': | |
433 | case '+': | |
434 | if (str[2] != '\000') | |
435 | { | |
67c1ffbe | 436 | addr_modeP->mode = 27; /* pc-relative */ |
252b5132 | 437 | addr_modeP->disp[0] = str + 2; |
c6a7ab1f | 438 | return -1; |
252b5132 RH |
439 | } |
440 | default: | |
4eb6b71c | 441 | as_bad (_("Invalid syntax in PC-relative addressing mode")); |
c6a7ab1f | 442 | return 0; |
252b5132 RH |
443 | } |
444 | } | |
445 | break; | |
446 | case 'e': | |
447 | if (str[strl - 1] != ']') | |
448 | { | |
449 | if ((!strncmp (str, "ext(", 4)) && strl > 7) | |
450 | { /* external */ | |
451 | addr_modeP->disp[0] = str + 4; | |
452 | i = 0; | |
453 | j = 2; | |
454 | do | |
4eb6b71c | 455 | { /* disp[0]'s termination point. */ |
252b5132 RH |
456 | j += 1; |
457 | if (str[j] == '(') | |
458 | i++; | |
459 | if (str[j] == ')') | |
460 | i--; | |
461 | } | |
462 | while (j < strl && i != 0); | |
463 | if (i != 0 || !(str[j + 1] == '-' || str[j + 1] == '+')) | |
464 | { | |
4eb6b71c | 465 | as_bad (_("Invalid syntax in External addressing mode")); |
252b5132 RH |
466 | return (0); |
467 | } | |
468 | str[j] = '\000'; /* null terminate disp[0] */ | |
469 | addr_modeP->disp[1] = str + j + 2; | |
470 | addr_modeP->mode = 22; | |
c6a7ab1f | 471 | return -1; |
252b5132 RH |
472 | } |
473 | } | |
474 | break; | |
0b7410c4 | 475 | |
c6a7ab1f NC |
476 | default: |
477 | ; | |
252b5132 | 478 | } |
0b7410c4 | 479 | |
252b5132 | 480 | strl = strlen (str); |
0b7410c4 | 481 | |
252b5132 RH |
482 | switch (strl) |
483 | { | |
484 | case 2: | |
485 | switch (str[0]) | |
486 | { | |
487 | case 'f': | |
488 | addr_modeP->float_flag = 1; | |
c6a7ab1f | 489 | /* Drop through. */ |
252b5132 RH |
490 | case 'r': |
491 | if (str[1] >= '0' && str[1] < '8') | |
492 | { | |
493 | addr_modeP->mode = str[1] - '0'; | |
c6a7ab1f | 494 | return -1; |
252b5132 | 495 | } |
c6a7ab1f NC |
496 | break; |
497 | default: | |
498 | break; | |
252b5132 | 499 | } |
c6a7ab1f | 500 | /* Drop through. */ |
0b7410c4 | 501 | |
252b5132 RH |
502 | case 3: |
503 | if (!strncmp (str, "tos", 3)) | |
504 | { | |
505 | addr_modeP->mode = 23; /* TopOfStack */ | |
c6a7ab1f | 506 | return -1; |
252b5132 | 507 | } |
c6a7ab1f | 508 | break; |
0b7410c4 | 509 | |
c6a7ab1f NC |
510 | default: |
511 | break; | |
252b5132 | 512 | } |
0b7410c4 | 513 | |
252b5132 RH |
514 | if (strl > 4) |
515 | { | |
516 | if (str[strl - 1] == ')') | |
517 | { | |
518 | if (str[strl - 2] == ')') | |
519 | { | |
520 | if (!strncmp (&str[strl - 5], "(fp", 3)) | |
c6a7ab1f NC |
521 | mode = 16; /* Memory Relative. */ |
522 | else if (!strncmp (&str[strl - 5], "(sp", 3)) | |
523 | mode = 17; | |
524 | else if (!strncmp (&str[strl - 5], "(sb", 3)) | |
525 | mode = 18; | |
526 | ||
252b5132 | 527 | if (mode != DEFAULT) |
4eb6b71c NC |
528 | { |
529 | /* Memory relative. */ | |
252b5132 | 530 | addr_modeP->mode = mode; |
c6a7ab1f | 531 | j = strl - 5; /* Temp for end of disp[0]. */ |
252b5132 | 532 | i = 0; |
0b7410c4 | 533 | |
252b5132 RH |
534 | do |
535 | { | |
536 | strl -= 1; | |
537 | if (str[strl] == ')') | |
538 | i++; | |
539 | if (str[strl] == '(') | |
540 | i--; | |
541 | } | |
542 | while (strl > -1 && i != 0); | |
0b7410c4 | 543 | |
252b5132 RH |
544 | if (i != 0) |
545 | { | |
4eb6b71c | 546 | as_bad (_("Invalid syntax in Memory Relative addressing mode")); |
252b5132 RH |
547 | return (0); |
548 | } | |
0b7410c4 | 549 | |
252b5132 RH |
550 | addr_modeP->disp[1] = str; |
551 | addr_modeP->disp[0] = str + strl + 1; | |
0b7410c4 | 552 | str[j] = '\000'; /* Null terminate disp[0] . */ |
c6a7ab1f | 553 | str[strl] = '\000'; /* Null terminate disp[1]. */ |
0b7410c4 | 554 | |
c6a7ab1f | 555 | return -1; |
252b5132 RH |
556 | } |
557 | } | |
0b7410c4 | 558 | |
252b5132 RH |
559 | switch (str[strl - 3]) |
560 | { | |
561 | case 'r': | |
562 | case 'R': | |
563 | if (str[strl - 2] >= '0' | |
564 | && str[strl - 2] < '8' | |
565 | && str[strl - 4] == '(') | |
566 | { | |
567 | addr_modeP->mode = str[strl - 2] - '0' + 8; | |
568 | addr_modeP->disp[0] = str; | |
569 | str[strl - 4] = 0; | |
c6a7ab1f | 570 | return -1; /* reg rel */ |
252b5132 | 571 | } |
c6a7ab1f | 572 | /* Drop through. */ |
0b7410c4 | 573 | |
252b5132 RH |
574 | default: |
575 | if (!strncmp (&str[strl - 4], "(fp", 3)) | |
c6a7ab1f NC |
576 | mode = 24; |
577 | else if (!strncmp (&str[strl - 4], "(sp", 3)) | |
578 | mode = 25; | |
579 | else if (!strncmp (&str[strl - 4], "(sb", 3)) | |
580 | mode = 26; | |
581 | else if (!strncmp (&str[strl - 4], "(pc", 3)) | |
582 | mode = 27; | |
0b7410c4 | 583 | |
252b5132 RH |
584 | if (mode != DEFAULT) |
585 | { | |
586 | addr_modeP->mode = mode; | |
587 | addr_modeP->disp[0] = str; | |
588 | str[strl - 4] = '\0'; | |
0b7410c4 | 589 | |
c6a7ab1f | 590 | return -1; /* Memory space. */ |
252b5132 RH |
591 | } |
592 | } | |
593 | } | |
0b7410c4 | 594 | |
c6a7ab1f | 595 | /* No trailing ')' do we have a ']' ? */ |
252b5132 RH |
596 | if (str[strl - 1] == ']') |
597 | { | |
598 | switch (str[strl - 2]) | |
599 | { | |
600 | case 'b': | |
601 | mode = 28; | |
602 | break; | |
603 | case 'w': | |
604 | mode = 29; | |
605 | break; | |
606 | case 'd': | |
607 | mode = 30; | |
608 | break; | |
609 | case 'q': | |
610 | mode = 31; | |
611 | break; | |
c6a7ab1f | 612 | default: |
4eb6b71c | 613 | as_bad (_("Invalid scaled-indexed mode, use (b,w,d,q)")); |
0b7410c4 | 614 | |
252b5132 RH |
615 | if (str[strl - 3] != ':' || str[strl - 6] != '[' |
616 | || str[strl - 5] == 'r' || str[strl - 4] < '0' | |
617 | || str[strl - 4] > '7') | |
4eb6b71c | 618 | as_bad (_("Syntax in scaled-indexed mode, use [Rn:m] where n=[0..7] m={b,w,d,q}")); |
c6a7ab1f NC |
619 | } /* Scaled index. */ |
620 | ||
621 | if (recursive_level > 0) | |
622 | { | |
4eb6b71c | 623 | as_bad (_("Scaled-indexed addressing mode combined with scaled-index")); |
c6a7ab1f NC |
624 | return 0; |
625 | } | |
0b7410c4 | 626 | |
4eb6b71c NC |
627 | addr_modeP->am_size += 1; /* scaled index byte. */ |
628 | j = str[strl - 4] - '0'; /* store temporary. */ | |
629 | str[strl - 6] = '\000'; /* nullterminate for recursive call. */ | |
c6a7ab1f | 630 | i = addr_mode (str, addr_modeP, 1); |
0b7410c4 | 631 | |
c6a7ab1f NC |
632 | if (!i || addr_modeP->mode == 20) |
633 | { | |
4eb6b71c | 634 | as_bad (_("Invalid or illegal addressing mode combined with scaled-index")); |
c6a7ab1f NC |
635 | return 0; |
636 | } | |
0b7410c4 | 637 | |
c6a7ab1f NC |
638 | addr_modeP->scaled_mode = addr_modeP->mode; /* Store the inferior mode. */ |
639 | addr_modeP->mode = mode; | |
640 | addr_modeP->scaled_reg = j + 1; | |
0b7410c4 | 641 | |
c6a7ab1f | 642 | return -1; |
252b5132 RH |
643 | } |
644 | } | |
0b7410c4 | 645 | |
c6a7ab1f | 646 | addr_modeP->mode = DEFAULT; /* Default to whatever. */ |
252b5132 | 647 | addr_modeP->disp[0] = str; |
0b7410c4 | 648 | |
c6a7ab1f | 649 | return -1; |
252b5132 RH |
650 | } |
651 | \f | |
ea1562b3 NC |
652 | static void |
653 | evaluate_expr (expressionS *resultP, char *ptr) | |
654 | { | |
655 | char *tmp_line; | |
656 | ||
657 | tmp_line = input_line_pointer; | |
658 | input_line_pointer = ptr; | |
659 | expression (resultP); | |
660 | input_line_pointer = tmp_line; | |
661 | } | |
662 | ||
252b5132 RH |
663 | /* ptr points at string addr_modeP points at struct with result This |
664 | routine calls addr_mode to determine the general addr.mode of the | |
665 | operand. When this is ready it parses the displacements for size | |
666 | specifying suffixes and determines size of immediate mode via | |
667 | ns32k-opcode. Also builds index bytes if needed. */ | |
c6a7ab1f | 668 | |
4eb6b71c | 669 | static int |
ea1562b3 | 670 | get_addr_mode (char *ptr, addr_modeS *addr_modeP) |
252b5132 RH |
671 | { |
672 | int tmp; | |
0b7410c4 | 673 | |
252b5132 | 674 | addr_mode (ptr, addr_modeP, 0); |
0b7410c4 | 675 | |
252b5132 RH |
676 | if (addr_modeP->mode == DEFAULT || addr_modeP->scaled_mode == -1) |
677 | { | |
67c1ffbe | 678 | /* Resolve ambiguous operands, this shouldn't be necessary if |
252b5132 | 679 | one uses standard NSC operand syntax. But the sequent |
67c1ffbe | 680 | compiler doesn't!!! This finds a proper addressing mode |
c6a7ab1f NC |
681 | if it is implicitly stated. See ns32k-opcode.h. */ |
682 | (void) evaluate_expr (&exprP, ptr); /* This call takes time Sigh! */ | |
0b7410c4 | 683 | |
252b5132 RH |
684 | if (addr_modeP->mode == DEFAULT) |
685 | { | |
686 | if (exprP.X_add_symbol || exprP.X_op_symbol) | |
c6a7ab1f | 687 | addr_modeP->mode = desc->default_model; /* We have a label. */ |
252b5132 | 688 | else |
c6a7ab1f | 689 | addr_modeP->mode = desc->default_modec; /* We have a constant. */ |
252b5132 RH |
690 | } |
691 | else | |
692 | { | |
693 | if (exprP.X_add_symbol || exprP.X_op_symbol) | |
c6a7ab1f | 694 | addr_modeP->scaled_mode = desc->default_model; |
252b5132 | 695 | else |
c6a7ab1f | 696 | addr_modeP->scaled_mode = desc->default_modec; |
252b5132 | 697 | } |
0b7410c4 | 698 | |
c6a7ab1f NC |
699 | /* Must put this mess down in addr_mode to handle the scaled |
700 | case better. */ | |
252b5132 | 701 | } |
0b7410c4 | 702 | |
252b5132 RH |
703 | /* It appears as the sequent compiler wants an absolute when we have |
704 | a label without @. Constants becomes immediates besides the addr | |
705 | case. Think it does so with local labels too, not optimum, pcrel | |
706 | is better. When I have time I will make gas check this and | |
707 | select pcrel when possible Actually that is trivial. */ | |
4eb6b71c | 708 | if ((tmp = addr_modeP->scaled_reg)) |
c6a7ab1f NC |
709 | { /* Build indexbyte. */ |
710 | tmp--; /* Remember regnumber comes incremented for | |
711 | flagpurpose. */ | |
252b5132 RH |
712 | tmp |= addr_modeP->scaled_mode << 3; |
713 | addr_modeP->index_byte = (char) tmp; | |
714 | addr_modeP->am_size += 1; | |
715 | } | |
0b7410c4 | 716 | |
4eb6b71c NC |
717 | assert (addr_modeP->mode >= 0); |
718 | if (disp_test[(unsigned int) addr_modeP->mode]) | |
c6a7ab1f | 719 | { |
4eb6b71c NC |
720 | char c; |
721 | char suffix; | |
722 | char suffix_sub; | |
723 | int i; | |
724 | char *toP; | |
725 | char *fromP; | |
c6a7ab1f NC |
726 | |
727 | /* There was a displacement, probe for length specifying suffix. */ | |
728 | addr_modeP->pcrel = 0; | |
0b7410c4 | 729 | |
4eb6b71c NC |
730 | assert(addr_modeP->mode >= 0); |
731 | if (disp_test[(unsigned int) addr_modeP->mode]) | |
c6a7ab1f NC |
732 | { |
733 | /* There is a displacement. */ | |
734 | if (addr_modeP->mode == 27 || addr_modeP->scaled_mode == 27) | |
735 | /* Do we have pcrel. mode. */ | |
736 | addr_modeP->pcrel = 1; | |
0b7410c4 | 737 | |
c6a7ab1f | 738 | addr_modeP->im_disp = 1; |
0b7410c4 | 739 | |
c6a7ab1f NC |
740 | for (i = 0; i < 2; i++) |
741 | { | |
742 | suffix_sub = suffix = 0; | |
0b7410c4 | 743 | |
4eb6b71c | 744 | if ((toP = addr_modeP->disp[i])) |
c6a7ab1f NC |
745 | { |
746 | /* Suffix of expression, the largest size rules. */ | |
747 | fromP = toP; | |
0b7410c4 | 748 | |
4eb6b71c | 749 | while ((c = *fromP++)) |
c6a7ab1f NC |
750 | { |
751 | *toP++ = c; | |
752 | if (c == ':') | |
753 | { | |
754 | switch (*fromP) | |
755 | { | |
756 | case '\0': | |
757 | as_warn (_("Premature end of suffix -- Defaulting to d")); | |
758 | suffix = 4; | |
759 | continue; | |
760 | case 'b': | |
761 | suffix_sub = 1; | |
762 | break; | |
763 | case 'w': | |
764 | suffix_sub = 2; | |
765 | break; | |
766 | case 'd': | |
767 | suffix_sub = 4; | |
768 | break; | |
769 | default: | |
770 | as_warn (_("Bad suffix after ':' use {b|w|d} Defaulting to d")); | |
771 | suffix = 4; | |
772 | } | |
0b7410c4 | 773 | |
c6a7ab1f NC |
774 | fromP ++; |
775 | toP --; /* So we write over the ':' */ | |
0b7410c4 | 776 | |
c6a7ab1f NC |
777 | if (suffix < suffix_sub) |
778 | suffix = suffix_sub; | |
779 | } | |
780 | } | |
0b7410c4 | 781 | |
c6a7ab1f NC |
782 | *toP = '\0'; /* Terminate properly. */ |
783 | addr_modeP->disp_suffix[i] = suffix; | |
784 | addr_modeP->am_size += suffix ? suffix : 4; | |
785 | } | |
786 | } | |
787 | } | |
252b5132 RH |
788 | } |
789 | else | |
790 | { | |
791 | if (addr_modeP->mode == 20) | |
c6a7ab1f NC |
792 | { |
793 | /* Look in ns32k_opcode for size. */ | |
252b5132 RH |
794 | addr_modeP->disp_suffix[0] = addr_modeP->am_size = desc->im_size; |
795 | addr_modeP->im_disp = 0; | |
796 | } | |
797 | } | |
0b7410c4 | 798 | |
252b5132 RH |
799 | return addr_modeP->mode; |
800 | } | |
801 | ||
c6a7ab1f | 802 | /* Read an optionlist. */ |
252b5132 | 803 | |
4eb6b71c | 804 | static void |
ea1562b3 NC |
805 | optlist (char *str, /* The string to extract options from. */ |
806 | struct ns32k_option *optionP, /* How to search the string. */ | |
807 | unsigned long *default_map) /* Default pattern and output. */ | |
252b5132 | 808 | { |
4eb6b71c NC |
809 | int i, j, k, strlen1, strlen2; |
810 | char *patternP, *strP; | |
0b7410c4 | 811 | |
252b5132 | 812 | strlen1 = strlen (str); |
0b7410c4 | 813 | |
252b5132 | 814 | if (strlen1 < 1) |
c6a7ab1f | 815 | as_fatal (_("Very short instr to option, ie you can't do it on a NULLstr")); |
0b7410c4 | 816 | |
252b5132 RH |
817 | for (i = 0; optionP[i].pattern != 0; i++) |
818 | { | |
819 | strlen2 = strlen (optionP[i].pattern); | |
0b7410c4 | 820 | |
252b5132 RH |
821 | for (j = 0; j < strlen1; j++) |
822 | { | |
823 | patternP = optionP[i].pattern; | |
824 | strP = &str[j]; | |
0b7410c4 | 825 | |
252b5132 RH |
826 | for (k = 0; k < strlen2; k++) |
827 | { | |
828 | if (*(strP++) != *(patternP++)) | |
829 | break; | |
830 | } | |
0b7410c4 | 831 | |
252b5132 RH |
832 | if (k == strlen2) |
833 | { /* match */ | |
834 | *default_map |= optionP[i].or; | |
835 | *default_map &= optionP[i].and; | |
836 | } | |
837 | } | |
838 | } | |
839 | } | |
840 | ||
c6a7ab1f | 841 | /* Search struct for symbols. |
252b5132 RH |
842 | This function is used to get the short integer form of reg names in |
843 | the instructions lmr, smr, lpr, spr return true if str is found in | |
c6a7ab1f | 844 | list. */ |
252b5132 | 845 | |
4eb6b71c | 846 | static int |
ea1562b3 NC |
847 | list_search (char *str, /* The string to match. */ |
848 | struct ns32k_option *optionP, /* List to search. */ | |
849 | unsigned long *default_map) /* Default pattern and output. */ | |
252b5132 | 850 | { |
4eb6b71c | 851 | int i; |
0b7410c4 | 852 | |
252b5132 RH |
853 | for (i = 0; optionP[i].pattern != 0; i++) |
854 | { | |
855 | if (!strncmp (optionP[i].pattern, str, 20)) | |
c6a7ab1f NC |
856 | { |
857 | /* Use strncmp to be safe. */ | |
252b5132 RH |
858 | *default_map |= optionP[i].or; |
859 | *default_map &= optionP[i].and; | |
0b7410c4 | 860 | |
252b5132 RH |
861 | return -1; |
862 | } | |
863 | } | |
0b7410c4 | 864 | |
4eb6b71c | 865 | as_bad (_("No such entry in list. (cpu/mmu register)")); |
252b5132 RH |
866 | return 0; |
867 | } | |
ea1562b3 NC |
868 | \f |
869 | /* Create a bit_fixS in obstack 'notes'. | |
870 | This struct is used to profile the normal fix. If the bit_fixP is a | |
871 | valid pointer (not NULL) the bit_fix data will be used to format | |
872 | the fix. */ | |
252b5132 | 873 | |
ea1562b3 NC |
874 | static bit_fixS * |
875 | bit_fix_new (int size, /* Length of bitfield. */ | |
876 | int offset, /* Bit offset to bitfield. */ | |
877 | long min, /* Signextended min for bitfield. */ | |
878 | long max, /* Signextended max for bitfield. */ | |
879 | long add, /* Add mask, used for huffman prefix. */ | |
880 | long base_type, /* 0 or 1, if 1 it's exploded to opcode ptr. */ | |
881 | long base_adj) | |
252b5132 | 882 | { |
ea1562b3 | 883 | bit_fixS *bit_fixP; |
252b5132 | 884 | |
ea1562b3 NC |
885 | bit_fixP = (bit_fixS *) obstack_alloc (¬es, sizeof (bit_fixS)); |
886 | ||
887 | bit_fixP->fx_bit_size = size; | |
888 | bit_fixP->fx_bit_offset = offset; | |
889 | bit_fixP->fx_bit_base = base_type; | |
890 | bit_fixP->fx_bit_base_adj = base_adj; | |
891 | bit_fixP->fx_bit_max = max; | |
892 | bit_fixP->fx_bit_min = min; | |
893 | bit_fixP->fx_bit_add = add; | |
894 | ||
895 | return bit_fixP; | |
252b5132 | 896 | } |
ea1562b3 | 897 | |
252b5132 RH |
898 | /* Convert operands to iif-format and adds bitfields to the opcode. |
899 | Operands are parsed in such an order that the opcode is updated from | |
900 | its most significant bit, that is when the operand need to alter the | |
901 | opcode. | |
67c1ffbe | 902 | Be careful not to put to objects in the same iif-slot. */ |
252b5132 | 903 | |
4eb6b71c | 904 | static void |
ea1562b3 NC |
905 | encode_operand (int argc, |
906 | char **argv, | |
907 | const char *operandsP, | |
908 | const char *suffixP, | |
909 | char im_size ATTRIBUTE_UNUSED, | |
910 | char opcode_bit_ptr) | |
252b5132 | 911 | { |
4eb6b71c | 912 | int i, j; |
252b5132 | 913 | char d; |
4eb6b71c NC |
914 | int pcrel, b, loop, pcrel_adjust; |
915 | unsigned long tmp; | |
0b7410c4 | 916 | |
252b5132 RH |
917 | for (loop = 0; loop < argc; loop++) |
918 | { | |
c6a7ab1f NC |
919 | /* What operand are we supposed to work on. */ |
920 | i = operandsP[loop << 1] - '1'; | |
252b5132 RH |
921 | if (i > 3) |
922 | as_fatal (_("Internal consistency error. check ns32k-opcode.h")); | |
0b7410c4 | 923 | |
252b5132 RH |
924 | pcrel = 0; |
925 | pcrel_adjust = 0; | |
926 | tmp = 0; | |
0b7410c4 | 927 | |
252b5132 RH |
928 | switch ((d = operandsP[(loop << 1) + 1])) |
929 | { | |
4eb6b71c NC |
930 | case 'f': /* Operand of sfsr turns out to be a nasty |
931 | specialcase. */ | |
252b5132 | 932 | opcode_bit_ptr -= 5; |
4eb6b71c NC |
933 | case 'Z': /* Float not immediate. */ |
934 | case 'F': /* 32 bit float general form. */ | |
935 | case 'L': /* 64 bit float. */ | |
936 | case 'I': /* Integer not immediate. */ | |
937 | case 'B': /* Byte */ | |
938 | case 'W': /* Word */ | |
939 | case 'D': /* Double-word. */ | |
940 | case 'A': /* Double-word gen-address-form ie no regs | |
941 | allowed. */ | |
252b5132 | 942 | get_addr_mode (argv[i], &addr_modeP); |
0b7410c4 | 943 | |
c6a7ab1f NC |
944 | if ((addr_modeP.mode == 20) && |
945 | (d == 'I' || d == 'Z' || d == 'A')) | |
946 | as_fatal (d == 'A'? _("Address of immediate operand"): | |
947 | _("Invalid immediate write operand.")); | |
252b5132 RH |
948 | |
949 | if (opcode_bit_ptr == desc->opcode_size) | |
950 | b = 4; | |
951 | else | |
952 | b = 6; | |
0b7410c4 | 953 | |
252b5132 RH |
954 | for (j = b; j < (b + 2); j++) |
955 | { | |
956 | if (addr_modeP.disp[j - b]) | |
957 | { | |
958 | IIF (j, | |
959 | 2, | |
960 | addr_modeP.disp_suffix[j - b], | |
961 | (unsigned long) addr_modeP.disp[j - b], | |
962 | 0, | |
963 | addr_modeP.pcrel, | |
964 | iif.instr_size, | |
965 | addr_modeP.im_disp, | |
966 | IND (BRANCH, BYTE), | |
967 | NULL, | |
968 | (addr_modeP.scaled_reg ? addr_modeP.scaled_mode | |
969 | : addr_modeP.mode), | |
970 | 0); | |
971 | } | |
972 | } | |
0b7410c4 | 973 | |
252b5132 RH |
974 | opcode_bit_ptr -= 5; |
975 | iif.iifP[1].object |= ((long) addr_modeP.mode) << opcode_bit_ptr; | |
0b7410c4 | 976 | |
252b5132 RH |
977 | if (addr_modeP.scaled_reg) |
978 | { | |
979 | j = b / 2; | |
980 | IIF (j, 1, 1, (unsigned long) addr_modeP.index_byte, | |
981 | 0, 0, 0, 0, 0, NULL, -1, 0); | |
982 | } | |
983 | break; | |
0b7410c4 | 984 | |
4eb6b71c NC |
985 | case 'b': /* Multiple instruction disp. */ |
986 | freeptr++; /* OVE:this is an useful hack. */ | |
987 | sprintf (freeptr, "((%s-1)*%d)", argv[i], desc->im_size); | |
252b5132 | 988 | argv[i] = freeptr; |
67c1ffbe | 989 | pcrel -= 1; /* Make pcrel 0 in spite of what case 'p': |
4eb6b71c | 990 | wants. */ |
252b5132 | 991 | /* fall thru */ |
4eb6b71c | 992 | case 'p': /* Displacement - pc relative addressing. */ |
252b5132 RH |
993 | pcrel += 1; |
994 | /* fall thru */ | |
4eb6b71c | 995 | case 'd': /* Displacement. */ |
252b5132 RH |
996 | iif.instr_size += suffixP[i] ? suffixP[i] : 4; |
997 | IIF (12, 2, suffixP[i], (unsigned long) argv[i], 0, | |
998 | pcrel, pcrel_adjust, 1, IND (BRANCH, BYTE), NULL, -1, 0); | |
999 | break; | |
4eb6b71c NC |
1000 | case 'H': /* Sequent-hack: the linker wants a bit set |
1001 | when bsr. */ | |
252b5132 RH |
1002 | pcrel = 1; |
1003 | iif.instr_size += suffixP[i] ? suffixP[i] : 4; | |
1004 | IIF (12, 2, suffixP[i], (unsigned long) argv[i], 0, | |
1005 | pcrel, pcrel_adjust, 1, IND (BRANCH, BYTE), NULL, -1, 1); | |
1006 | break; | |
1007 | case 'q': /* quick */ | |
1008 | opcode_bit_ptr -= 4; | |
1009 | IIF (11, 2, 42, (unsigned long) argv[i], 0, 0, 0, 0, 0, | |
1010 | bit_fix_new (4, opcode_bit_ptr, -8, 7, 0, 1, 0), -1, 0); | |
1011 | break; | |
4eb6b71c | 1012 | case 'r': /* Register number (3 bits). */ |
252b5132 RH |
1013 | list_search (argv[i], opt6, &tmp); |
1014 | opcode_bit_ptr -= 3; | |
1015 | iif.iifP[1].object |= tmp << opcode_bit_ptr; | |
1016 | break; | |
4eb6b71c | 1017 | case 'O': /* Setcfg instruction optionslist. */ |
252b5132 RH |
1018 | optlist (argv[i], opt3, &tmp); |
1019 | opcode_bit_ptr -= 4; | |
1020 | iif.iifP[1].object |= tmp << 15; | |
1021 | break; | |
4eb6b71c | 1022 | case 'C': /* Cinv instruction optionslist. */ |
252b5132 RH |
1023 | optlist (argv[i], opt4, &tmp); |
1024 | opcode_bit_ptr -= 4; | |
4eb6b71c | 1025 | iif.iifP[1].object |= tmp << 15; /* Insert the regtype in opcode. */ |
252b5132 | 1026 | break; |
4eb6b71c | 1027 | case 'S': /* String instruction options list. */ |
252b5132 RH |
1028 | optlist (argv[i], opt5, &tmp); |
1029 | opcode_bit_ptr -= 4; | |
1030 | iif.iifP[1].object |= tmp << 15; | |
1031 | break; | |
1032 | case 'u': | |
4eb6b71c | 1033 | case 'U': /* Register list. */ |
252b5132 RH |
1034 | IIF (10, 1, 1, 0, 0, 0, 0, 0, 0, NULL, -1, 0); |
1035 | switch (operandsP[(i << 1) + 1]) | |
1036 | { | |
4eb6b71c | 1037 | case 'u': /* Restore, exit. */ |
252b5132 RH |
1038 | optlist (argv[i], opt1, &iif.iifP[10].object); |
1039 | break; | |
4eb6b71c | 1040 | case 'U': /* Save, enter. */ |
252b5132 RH |
1041 | optlist (argv[i], opt2, &iif.iifP[10].object); |
1042 | break; | |
1043 | } | |
1044 | iif.instr_size += 1; | |
1045 | break; | |
4eb6b71c | 1046 | case 'M': /* MMU register. */ |
252b5132 RH |
1047 | list_search (argv[i], mmureg, &tmp); |
1048 | opcode_bit_ptr -= 4; | |
1049 | iif.iifP[1].object |= tmp << opcode_bit_ptr; | |
1050 | break; | |
4eb6b71c | 1051 | case 'P': /* CPU register. */ |
252b5132 RH |
1052 | list_search (argv[i], cpureg, &tmp); |
1053 | opcode_bit_ptr -= 4; | |
1054 | iif.iifP[1].object |= tmp << opcode_bit_ptr; | |
1055 | break; | |
4eb6b71c NC |
1056 | case 'g': /* Inss exts. */ |
1057 | iif.instr_size += 1; /* 1 byte is allocated after the opcode. */ | |
252b5132 | 1058 | IIF (10, 2, 1, |
4eb6b71c | 1059 | (unsigned long) argv[i], /* i always 2 here. */ |
252b5132 | 1060 | 0, 0, 0, 0, 0, |
4eb6b71c NC |
1061 | bit_fix_new (3, 5, 0, 7, 0, 0, 0), /* A bit_fix is targeted to |
1062 | the byte. */ | |
252b5132 RH |
1063 | -1, 0); |
1064 | break; | |
1065 | case 'G': | |
1066 | IIF (11, 2, 42, | |
4eb6b71c | 1067 | (unsigned long) argv[i], /* i always 3 here. */ |
252b5132 RH |
1068 | 0, 0, 0, 0, 0, |
1069 | bit_fix_new (5, 0, 1, 32, -1, 0, -1), -1, 0); | |
1070 | break; | |
1071 | case 'i': | |
1072 | iif.instr_size += 1; | |
4eb6b71c | 1073 | b = 2 + i; /* Put the extension byte after opcode. */ |
252b5132 RH |
1074 | IIF (b, 2, 1, 0, 0, 0, 0, 0, 0, 0, -1, 0); |
1075 | break; | |
1076 | default: | |
1077 | as_fatal (_("Bad opcode-table-option, check in file ns32k-opcode.h")); | |
1078 | } | |
1079 | } | |
1080 | } | |
1081 | \f | |
1082 | /* in: instruction line | |
1083 | out: internal structure of instruction | |
1084 | that has been prepared for direct conversion to fragment(s) and | |
1085 | fixes in a systematical fashion | |
4eb6b71c | 1086 | Return-value = recursive_level. */ |
c6a7ab1f NC |
1087 | /* Build iif of one assembly text line. */ |
1088 | ||
4eb6b71c | 1089 | static int |
ea1562b3 | 1090 | parse (const char *line, int recursive_level) |
252b5132 | 1091 | { |
4cd62c96 AM |
1092 | const char *lineptr; |
1093 | char c, suffix_separator; | |
4eb6b71c NC |
1094 | int i; |
1095 | unsigned int argc; | |
1096 | int arg_type; | |
252b5132 | 1097 | char sqr, sep; |
c6a7ab1f | 1098 | char suffix[MAX_ARGS], *argv[MAX_ARGS]; /* No more than 4 operands. */ |
0b7410c4 | 1099 | |
252b5132 | 1100 | if (recursive_level <= 0) |
c6a7ab1f NC |
1101 | { |
1102 | /* Called from md_assemble. */ | |
1103 | for (lineptr = line; (*lineptr) != '\0' && (*lineptr) != ' '; lineptr++) | |
1104 | continue; | |
0b7410c4 | 1105 | |
252b5132 | 1106 | c = *lineptr; |
4cd62c96 | 1107 | *(char *) lineptr = '\0'; |
0b7410c4 | 1108 | |
252b5132 | 1109 | if (!(desc = (struct ns32k_opcode *) hash_find (inst_hash_handle, line))) |
c6a7ab1f NC |
1110 | as_fatal (_("No such opcode")); |
1111 | ||
4cd62c96 | 1112 | *(char *) lineptr = c; |
252b5132 RH |
1113 | } |
1114 | else | |
ea1562b3 | 1115 | lineptr = line; |
0b7410c4 | 1116 | |
252b5132 | 1117 | argc = 0; |
0b7410c4 | 1118 | |
252b5132 RH |
1119 | if (*desc->operands) |
1120 | { | |
1121 | if (*lineptr++ != '\0') | |
1122 | { | |
1123 | sqr = '['; | |
1124 | sep = ','; | |
0b7410c4 | 1125 | |
252b5132 RH |
1126 | while (*lineptr != '\0') |
1127 | { | |
1128 | if (desc->operands[argc << 1]) | |
1129 | { | |
1130 | suffix[argc] = 0; | |
1131 | arg_type = desc->operands[(argc << 1) + 1]; | |
0b7410c4 | 1132 | |
252b5132 RH |
1133 | switch (arg_type) |
1134 | { | |
1135 | case 'd': | |
1136 | case 'b': | |
1137 | case 'p': | |
c6a7ab1f NC |
1138 | case 'H': |
1139 | /* The operand is supposed to be a displacement. */ | |
252b5132 | 1140 | /* Hackwarning: do not forget to update the 4 |
c6a7ab1f | 1141 | cases above when editing ns32k-opcode.h. */ |
252b5132 RH |
1142 | suffix_separator = ':'; |
1143 | break; | |
1144 | default: | |
c6a7ab1f NC |
1145 | /* If this char occurs we loose. */ |
1146 | suffix_separator = '\255'; | |
1147 | break; | |
252b5132 | 1148 | } |
0b7410c4 | 1149 | |
4eb6b71c | 1150 | suffix[argc] = 0; /* 0 when no ':' is encountered. */ |
252b5132 RH |
1151 | argv[argc] = freeptr; |
1152 | *freeptr = '\0'; | |
0b7410c4 | 1153 | |
252b5132 RH |
1154 | while ((c = *lineptr) != '\0' && c != sep) |
1155 | { | |
1156 | if (c == sqr) | |
1157 | { | |
1158 | if (sqr == '[') | |
1159 | { | |
1160 | sqr = ']'; | |
1161 | sep = '\0'; | |
1162 | } | |
1163 | else | |
1164 | { | |
1165 | sqr = '['; | |
1166 | sep = ','; | |
1167 | } | |
1168 | } | |
0b7410c4 | 1169 | |
252b5132 | 1170 | if (c == suffix_separator) |
c6a7ab1f NC |
1171 | { |
1172 | /* ':' - label/suffix separator. */ | |
252b5132 RH |
1173 | switch (lineptr[1]) |
1174 | { | |
1175 | case 'b': | |
1176 | suffix[argc] = 1; | |
1177 | break; | |
1178 | case 'w': | |
1179 | suffix[argc] = 2; | |
1180 | break; | |
1181 | case 'd': | |
1182 | suffix[argc] = 4; | |
1183 | break; | |
1184 | default: | |
1185 | as_warn (_("Bad suffix, defaulting to d")); | |
1186 | suffix[argc] = 4; | |
1187 | if (lineptr[1] == '\0' || lineptr[1] == sep) | |
1188 | { | |
1189 | lineptr += 1; | |
1190 | continue; | |
1191 | } | |
c6a7ab1f | 1192 | break; |
252b5132 | 1193 | } |
0b7410c4 | 1194 | |
252b5132 RH |
1195 | lineptr += 2; |
1196 | continue; | |
1197 | } | |
0b7410c4 | 1198 | |
252b5132 RH |
1199 | *freeptr++ = c; |
1200 | lineptr++; | |
1201 | } | |
0b7410c4 | 1202 | |
252b5132 RH |
1203 | *freeptr++ = '\0'; |
1204 | argc += 1; | |
0b7410c4 | 1205 | |
252b5132 RH |
1206 | if (*lineptr == '\0') |
1207 | continue; | |
0b7410c4 | 1208 | |
252b5132 RH |
1209 | lineptr += 1; |
1210 | } | |
1211 | else | |
ea1562b3 | 1212 | as_fatal (_("Too many operands passed to instruction")); |
252b5132 RH |
1213 | } |
1214 | } | |
1215 | } | |
0b7410c4 | 1216 | |
252b5132 RH |
1217 | if (argc != strlen (desc->operands) / 2) |
1218 | { | |
1219 | if (strlen (desc->default_args)) | |
c6a7ab1f NC |
1220 | { |
1221 | /* We can apply default, don't goof. */ | |
252b5132 | 1222 | if (parse (desc->default_args, 1) != 1) |
c6a7ab1f NC |
1223 | /* Check error in default. */ |
1224 | as_fatal (_("Wrong numbers of operands in default, check ns32k-opcodes.h")); | |
252b5132 RH |
1225 | } |
1226 | else | |
ea1562b3 | 1227 | as_fatal (_("Wrong number of operands")); |
252b5132 | 1228 | } |
0b7410c4 | 1229 | |
252b5132 | 1230 | for (i = 0; i < IIF_ENTRIES; i++) |
c6a7ab1f NC |
1231 | /* Mark all entries as void. */ |
1232 | iif.iifP[i].type = 0; | |
252b5132 | 1233 | |
c6a7ab1f | 1234 | /* Build opcode iif-entry. */ |
252b5132 RH |
1235 | iif.instr_size = desc->opcode_size / 8; |
1236 | IIF (1, 1, iif.instr_size, desc->opcode_seed, 0, 0, 0, 0, 0, 0, -1, 0); | |
1237 | ||
c6a7ab1f | 1238 | /* This call encodes operands to iif format. */ |
252b5132 | 1239 | if (argc) |
ea1562b3 NC |
1240 | encode_operand (argc, argv, &desc->operands[0], |
1241 | &suffix[0], desc->im_size, desc->opcode_size); | |
1242 | ||
252b5132 RH |
1243 | return recursive_level; |
1244 | } | |
1245 | \f | |
ea1562b3 NC |
1246 | #ifdef BFD_ASSEMBLER |
1247 | /* This functionality should really be in the bfd library. */ | |
252b5132 | 1248 | |
ea1562b3 NC |
1249 | static bfd_reloc_code_real_type |
1250 | reloc (int size, int pcrel, int type) | |
252b5132 | 1251 | { |
ea1562b3 NC |
1252 | int length, index; |
1253 | bfd_reloc_code_real_type relocs[] = | |
1254 | { | |
1255 | BFD_RELOC_NS32K_IMM_8, | |
1256 | BFD_RELOC_NS32K_IMM_16, | |
1257 | BFD_RELOC_NS32K_IMM_32, | |
1258 | BFD_RELOC_NS32K_IMM_8_PCREL, | |
1259 | BFD_RELOC_NS32K_IMM_16_PCREL, | |
1260 | BFD_RELOC_NS32K_IMM_32_PCREL, | |
252b5132 | 1261 | |
ea1562b3 NC |
1262 | /* ns32k displacements. */ |
1263 | BFD_RELOC_NS32K_DISP_8, | |
1264 | BFD_RELOC_NS32K_DISP_16, | |
1265 | BFD_RELOC_NS32K_DISP_32, | |
1266 | BFD_RELOC_NS32K_DISP_8_PCREL, | |
1267 | BFD_RELOC_NS32K_DISP_16_PCREL, | |
1268 | BFD_RELOC_NS32K_DISP_32_PCREL, | |
252b5132 | 1269 | |
ea1562b3 NC |
1270 | /* Normal 2's complement. */ |
1271 | BFD_RELOC_8, | |
1272 | BFD_RELOC_16, | |
1273 | BFD_RELOC_32, | |
1274 | BFD_RELOC_8_PCREL, | |
1275 | BFD_RELOC_16_PCREL, | |
1276 | BFD_RELOC_32_PCREL | |
1277 | }; | |
1278 | ||
1279 | switch (size) | |
252b5132 | 1280 | { |
ea1562b3 NC |
1281 | case 1: |
1282 | length = 0; | |
1283 | break; | |
1284 | case 2: | |
1285 | length = 1; | |
1286 | break; | |
1287 | case 4: | |
1288 | length = 2; | |
1289 | break; | |
1290 | default: | |
1291 | length = -1; | |
1292 | break; | |
1293 | } | |
0b7410c4 | 1294 | |
ea1562b3 | 1295 | index = length + 3 * pcrel + 6 * type; |
0b7410c4 | 1296 | |
ea1562b3 NC |
1297 | if (index >= 0 && (unsigned int) index < sizeof (relocs) / sizeof (relocs[0])) |
1298 | return relocs[index]; | |
0b7410c4 | 1299 | |
ea1562b3 NC |
1300 | if (pcrel) |
1301 | as_bad (_("Can not do %d byte pc-relative relocation for storage type %d"), | |
1302 | size, type); | |
1303 | else | |
1304 | as_bad (_("Can not do %d byte relocation for storage type %d"), | |
1305 | size, type); | |
0b7410c4 | 1306 | |
ea1562b3 | 1307 | return BFD_RELOC_NONE; |
0b7410c4 | 1308 | |
ea1562b3 NC |
1309 | } |
1310 | #endif | |
252b5132 | 1311 | |
ea1562b3 NC |
1312 | static void |
1313 | fix_new_ns32k (fragS *frag, /* Which frag? */ | |
1314 | int where, /* Where in that frag? */ | |
1315 | int size, /* 1, 2 or 4 usually. */ | |
1316 | symbolS *add_symbol, /* X_add_symbol. */ | |
1317 | long offset, /* X_add_number. */ | |
1318 | int pcrel, /* True if PC-relative relocation. */ | |
1319 | char im_disp, /* True if the value to write is a | |
1320 | displacement. */ | |
1321 | bit_fixS *bit_fixP, /* Pointer at struct of bit_fix's, ignored if | |
1322 | NULL. */ | |
1323 | char bsr, /* Sequent-linker-hack: 1 when relocobject is | |
1324 | a bsr. */ | |
1325 | fragS *opcode_frag, | |
1326 | unsigned int opcode_offset) | |
1327 | { | |
1328 | fixS *fixP = fix_new (frag, where, size, add_symbol, | |
1329 | offset, pcrel, | |
1330 | #ifdef BFD_ASSEMBLER | |
1331 | bit_fixP ? NO_RELOC : reloc (size, pcrel, im_disp) | |
1332 | #else | |
1333 | NO_RELOC | |
1334 | #endif | |
1335 | ); | |
1336 | ||
1337 | fix_opcode_frag (fixP) = opcode_frag; | |
1338 | fix_opcode_offset (fixP) = opcode_offset; | |
1339 | fix_im_disp (fixP) = im_disp; | |
1340 | fix_bsr (fixP) = bsr; | |
1341 | fix_bit_fixP (fixP) = bit_fixP; | |
1342 | /* We have a MD overflow check for displacements. */ | |
1343 | fixP->fx_no_overflow = (im_disp != 0); | |
1344 | } | |
1345 | ||
1346 | static void | |
1347 | fix_new_ns32k_exp (fragS *frag, /* Which frag? */ | |
1348 | int where, /* Where in that frag? */ | |
1349 | int size, /* 1, 2 or 4 usually. */ | |
1350 | expressionS *exp, /* Expression. */ | |
1351 | int pcrel, /* True if PC-relative relocation. */ | |
1352 | char im_disp, /* True if the value to write is a | |
1353 | displacement. */ | |
1354 | bit_fixS *bit_fixP, /* Pointer at struct of bit_fix's, ignored if | |
1355 | NULL. */ | |
1356 | char bsr, /* Sequent-linker-hack: 1 when relocobject is | |
1357 | a bsr. */ | |
1358 | fragS *opcode_frag, | |
1359 | unsigned int opcode_offset) | |
1360 | { | |
1361 | fixS *fixP = fix_new_exp (frag, where, size, exp, pcrel, | |
1362 | #ifdef BFD_ASSEMBLER | |
1363 | bit_fixP ? NO_RELOC : reloc (size, pcrel, im_disp) | |
1364 | #else | |
1365 | NO_RELOC | |
1366 | #endif | |
1367 | ); | |
1368 | ||
1369 | fix_opcode_frag (fixP) = opcode_frag; | |
1370 | fix_opcode_offset (fixP) = opcode_offset; | |
1371 | fix_im_disp (fixP) = im_disp; | |
1372 | fix_bsr (fixP) = bsr; | |
1373 | fix_bit_fixP (fixP) = bit_fixP; | |
1374 | /* We have a MD overflow check for displacements. */ | |
1375 | fixP->fx_no_overflow = (im_disp != 0); | |
1376 | } | |
1377 | ||
1378 | /* Convert number to chars in correct order. */ | |
1379 | ||
1380 | void | |
1381 | md_number_to_chars (char *buf, valueT value, int nbytes) | |
1382 | { | |
1383 | number_to_chars_littleendian (buf, value, nbytes); | |
1384 | } | |
1385 | ||
1386 | /* This is a variant of md_numbers_to_chars. The reason for its' | |
1387 | existence is the fact that ns32k uses Huffman coded | |
1388 | displacements. This implies that the bit order is reversed in | |
1389 | displacements and that they are prefixed with a size-tag. | |
1390 | ||
1391 | binary: msb -> lsb | |
1392 | 0xxxxxxx byte | |
1393 | 10xxxxxx xxxxxxxx word | |
1394 | 11xxxxxx xxxxxxxx xxxxxxxx xxxxxxxx double word | |
1395 | ||
1396 | This must be taken care of and we do it here! */ | |
1397 | ||
1398 | static void | |
1399 | md_number_to_disp (char *buf, long val, int n) | |
1400 | { | |
1401 | switch (n) | |
1402 | { | |
1403 | case 1: | |
1404 | if (val < -64 || val > 63) | |
1405 | as_bad (_("value of %ld out of byte displacement range."), val); | |
1406 | val &= 0x7f; | |
1407 | #ifdef SHOW_NUM | |
1408 | printf ("%x ", val & 0xff); | |
1409 | #endif | |
1410 | *buf++ = val; | |
1411 | break; | |
1412 | ||
1413 | case 2: | |
1414 | if (val < -8192 || val > 8191) | |
1415 | as_bad (_("value of %ld out of word displacement range."), val); | |
1416 | val &= 0x3fff; | |
1417 | val |= 0x8000; | |
1418 | #ifdef SHOW_NUM | |
1419 | printf ("%x ", val >> 8 & 0xff); | |
1420 | #endif | |
1421 | *buf++ = (val >> 8); | |
1422 | #ifdef SHOW_NUM | |
1423 | printf ("%x ", val & 0xff); | |
1424 | #endif | |
1425 | *buf++ = val; | |
1426 | break; | |
1427 | ||
1428 | case 4: | |
1429 | if (val < -0x20000000 || val >= 0x20000000) | |
1430 | as_bad (_("value of %ld out of double word displacement range."), val); | |
1431 | val |= 0xc0000000; | |
1432 | #ifdef SHOW_NUM | |
1433 | printf ("%x ", val >> 24 & 0xff); | |
1434 | #endif | |
1435 | *buf++ = (val >> 24); | |
1436 | #ifdef SHOW_NUM | |
1437 | printf ("%x ", val >> 16 & 0xff); | |
1438 | #endif | |
1439 | *buf++ = (val >> 16); | |
1440 | #ifdef SHOW_NUM | |
1441 | printf ("%x ", val >> 8 & 0xff); | |
1442 | #endif | |
1443 | *buf++ = (val >> 8); | |
1444 | #ifdef SHOW_NUM | |
1445 | printf ("%x ", val & 0xff); | |
1446 | #endif | |
1447 | *buf++ = val; | |
1448 | break; | |
1449 | ||
1450 | default: | |
1451 | as_fatal (_("Internal logic error. line %d, file \"%s\""), | |
1452 | __LINE__, __FILE__); | |
1453 | } | |
1454 | } | |
1455 | ||
1456 | static void | |
1457 | md_number_to_imm (char *buf, long val, int n) | |
1458 | { | |
1459 | switch (n) | |
1460 | { | |
1461 | case 1: | |
1462 | #ifdef SHOW_NUM | |
1463 | printf ("%x ", val & 0xff); | |
1464 | #endif | |
1465 | *buf++ = val; | |
1466 | break; | |
1467 | ||
1468 | case 2: | |
1469 | #ifdef SHOW_NUM | |
1470 | printf ("%x ", val >> 8 & 0xff); | |
1471 | #endif | |
1472 | *buf++ = (val >> 8); | |
1473 | #ifdef SHOW_NUM | |
1474 | printf ("%x ", val & 0xff); | |
1475 | #endif | |
1476 | *buf++ = val; | |
1477 | break; | |
1478 | ||
1479 | case 4: | |
1480 | #ifdef SHOW_NUM | |
1481 | printf ("%x ", val >> 24 & 0xff); | |
1482 | #endif | |
1483 | *buf++ = (val >> 24); | |
1484 | #ifdef SHOW_NUM | |
1485 | printf ("%x ", val >> 16 & 0xff); | |
1486 | #endif | |
1487 | *buf++ = (val >> 16); | |
1488 | #ifdef SHOW_NUM | |
1489 | printf ("%x ", val >> 8 & 0xff); | |
1490 | #endif | |
1491 | *buf++ = (val >> 8); | |
1492 | #ifdef SHOW_NUM | |
1493 | printf ("%x ", val & 0xff); | |
1494 | #endif | |
1495 | *buf++ = val; | |
1496 | break; | |
1497 | ||
1498 | default: | |
1499 | as_fatal (_("Internal logic error. line %d, file \"%s\""), | |
1500 | __LINE__, __FILE__); | |
1501 | } | |
1502 | } | |
1503 | ||
1504 | /* Fast bitfiddling support. */ | |
1505 | /* Mask used to zero bitfield before oring in the true field. */ | |
1506 | ||
1507 | static unsigned long l_mask[] = | |
1508 | { | |
1509 | 0xffffffff, 0xfffffffe, 0xfffffffc, 0xfffffff8, | |
1510 | 0xfffffff0, 0xffffffe0, 0xffffffc0, 0xffffff80, | |
1511 | 0xffffff00, 0xfffffe00, 0xfffffc00, 0xfffff800, | |
1512 | 0xfffff000, 0xffffe000, 0xffffc000, 0xffff8000, | |
1513 | 0xffff0000, 0xfffe0000, 0xfffc0000, 0xfff80000, | |
1514 | 0xfff00000, 0xffe00000, 0xffc00000, 0xff800000, | |
1515 | 0xff000000, 0xfe000000, 0xfc000000, 0xf8000000, | |
1516 | 0xf0000000, 0xe0000000, 0xc0000000, 0x80000000, | |
1517 | }; | |
1518 | static unsigned long r_mask[] = | |
1519 | { | |
1520 | 0x00000000, 0x00000001, 0x00000003, 0x00000007, | |
1521 | 0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f, | |
1522 | 0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff, | |
1523 | 0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff, | |
1524 | 0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff, | |
1525 | 0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff, | |
1526 | 0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff, | |
1527 | 0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff, | |
1528 | }; | |
1529 | #define MASK_BITS 31 | |
1530 | /* Insert bitfield described by field_ptr and val at buf | |
1531 | This routine is written for modification of the first 4 bytes pointed | |
1532 | to by buf, to yield speed. | |
1533 | The ifdef stuff is for selection between a ns32k-dependent routine | |
1534 | and a general version. (My advice: use the general version!). */ | |
1535 | ||
1536 | static void | |
1537 | md_number_to_field (char *buf, long val, bit_fixS *field_ptr) | |
1538 | { | |
1539 | unsigned long object; | |
1540 | unsigned long mask; | |
1541 | /* Define ENDIAN on a ns32k machine. */ | |
1542 | #ifdef ENDIAN | |
1543 | unsigned long *mem_ptr; | |
1544 | #else | |
1545 | char *mem_ptr; | |
1546 | #endif | |
1547 | ||
1548 | if (field_ptr->fx_bit_min <= val && val <= field_ptr->fx_bit_max) | |
1549 | { | |
1550 | #ifdef ENDIAN | |
1551 | if (field_ptr->fx_bit_base) | |
1552 | /* Override buf. */ | |
1553 | mem_ptr = (unsigned long *) field_ptr->fx_bit_base; | |
1554 | else | |
1555 | mem_ptr = (unsigned long *) buf; | |
1556 | ||
1557 | mem_ptr = ((unsigned long *) | |
1558 | ((char *) mem_ptr + field_ptr->fx_bit_base_adj)); | |
1559 | #else | |
1560 | if (field_ptr->fx_bit_base) | |
1561 | mem_ptr = (char *) field_ptr->fx_bit_base; | |
1562 | else | |
1563 | mem_ptr = buf; | |
1564 | ||
1565 | mem_ptr += field_ptr->fx_bit_base_adj; | |
1566 | #endif | |
1567 | #ifdef ENDIAN | |
1568 | /* We have a nice ns32k machine with lowbyte at low-physical mem. */ | |
1569 | object = *mem_ptr; /* get some bytes */ | |
1570 | #else /* OVE Goof! the machine is a m68k or dito. */ | |
1571 | /* That takes more byte fiddling. */ | |
1572 | object = 0; | |
1573 | object |= mem_ptr[3] & 0xff; | |
1574 | object <<= 8; | |
1575 | object |= mem_ptr[2] & 0xff; | |
1576 | object <<= 8; | |
1577 | object |= mem_ptr[1] & 0xff; | |
1578 | object <<= 8; | |
1579 | object |= mem_ptr[0] & 0xff; | |
1580 | #endif | |
1581 | mask = 0; | |
1582 | mask |= (r_mask[field_ptr->fx_bit_offset]); | |
1583 | mask |= (l_mask[field_ptr->fx_bit_offset + field_ptr->fx_bit_size]); | |
1584 | object &= mask; | |
1585 | val += field_ptr->fx_bit_add; | |
1586 | object |= ((val << field_ptr->fx_bit_offset) & (mask ^ 0xffffffff)); | |
1587 | #ifdef ENDIAN | |
1588 | *mem_ptr = object; | |
1589 | #else | |
1590 | mem_ptr[0] = (char) object; | |
1591 | object >>= 8; | |
1592 | mem_ptr[1] = (char) object; | |
1593 | object >>= 8; | |
1594 | mem_ptr[2] = (char) object; | |
1595 | object >>= 8; | |
1596 | mem_ptr[3] = (char) object; | |
1597 | #endif | |
1598 | } | |
1599 | else | |
1600 | as_bad (_("Bit field out of range")); | |
1601 | } | |
1602 | ||
1603 | /* Convert iif to fragments. From this point we start to dribble with | |
1604 | functions in other files than this one.(Except hash.c) So, if it's | |
1605 | possible to make an iif for an other CPU, you don't need to know | |
1606 | what frags, relax, obstacks, etc is in order to port this | |
1607 | assembler. You only need to know if it's possible to reduce your | |
1608 | cpu-instruction to iif-format (takes some work) and adopt the other | |
1609 | md_? parts according to given instructions Note that iif was | |
1610 | invented for the clean ns32k`s architecture. */ | |
1611 | ||
1612 | /* GAS for the ns32k has a problem. PC relative displacements are | |
1613 | relative to the address of the opcode, not the address of the | |
1614 | operand. We used to keep track of the offset between the operand | |
1615 | and the opcode in pcrel_adjust for each frag and each fix. However, | |
1616 | we get into trouble where there are two or more pc-relative | |
1617 | operands and the size of the first one can't be determined. Then in | |
1618 | the relax phase, the size of the first operand will change and | |
1619 | pcrel_adjust will no longer be correct. The current solution is | |
1620 | keep a pointer to the frag with the opcode in it and the offset in | |
1621 | that frag for each frag and each fix. Then, when needed, we can | |
1622 | always figure out how far it is between the opcode and the pcrel | |
1623 | object. See also md_pcrel_adjust and md_fix_pcrel_adjust. For | |
1624 | objects not part of an instruction, the pointer to the opcode frag | |
1625 | is always zero. */ | |
1626 | ||
1627 | static void | |
1628 | convert_iif (void) | |
1629 | { | |
1630 | int i; | |
1631 | bit_fixS *j; | |
1632 | fragS *inst_frag; | |
1633 | unsigned int inst_offset; | |
1634 | char *inst_opcode; | |
1635 | char *memP; | |
1636 | int l; | |
1637 | int k; | |
1638 | char type; | |
1639 | char size = 0; | |
1640 | ||
1641 | frag_grow (iif.instr_size); /* This is important. */ | |
1642 | memP = frag_more (0); | |
1643 | inst_opcode = memP; | |
1644 | inst_offset = (memP - frag_now->fr_literal); | |
1645 | inst_frag = frag_now; | |
1646 | ||
1647 | for (i = 0; i < IIF_ENTRIES; i++) | |
1648 | { | |
1649 | if ((type = iif.iifP[i].type)) | |
1650 | { | |
1651 | /* The object exist, so handle it. */ | |
1652 | switch (size = iif.iifP[i].size) | |
1653 | { | |
1654 | case 42: | |
1655 | size = 0; | |
1656 | /* It's a bitfix that operates on an existing object. */ | |
1657 | if (iif.iifP[i].bit_fixP->fx_bit_base) | |
1658 | /* Expand fx_bit_base to point at opcode. */ | |
1659 | iif.iifP[i].bit_fixP->fx_bit_base = (long) inst_opcode; | |
1660 | /* Fall through. */ | |
1661 | ||
1662 | case 8: /* bignum or doublefloat. */ | |
1663 | case 1: | |
1664 | case 2: | |
1665 | case 3: | |
1666 | case 4: | |
1667 | /* The final size in objectmemory is known. */ | |
1668 | memP = frag_more (size); | |
1669 | j = iif.iifP[i].bit_fixP; | |
1670 | ||
1671 | switch (type) | |
1672 | { | |
1673 | case 1: /* The object is pure binary. */ | |
1674 | if (j) | |
1675 | md_number_to_field (memP, exprP.X_add_number, j); | |
1676 | ||
1677 | else if (iif.iifP[i].pcrel) | |
1678 | fix_new_ns32k (frag_now, | |
1679 | (long) (memP - frag_now->fr_literal), | |
1680 | size, | |
1681 | 0, | |
1682 | iif.iifP[i].object, | |
1683 | iif.iifP[i].pcrel, | |
1684 | iif.iifP[i].im_disp, | |
1685 | 0, | |
1686 | iif.iifP[i].bsr, /* Sequent hack. */ | |
1687 | inst_frag, inst_offset); | |
1688 | else | |
1689 | { | |
1690 | /* Good, just put them bytes out. */ | |
1691 | switch (iif.iifP[i].im_disp) | |
1692 | { | |
1693 | case 0: | |
1694 | md_number_to_chars (memP, iif.iifP[i].object, size); | |
1695 | break; | |
1696 | case 1: | |
1697 | md_number_to_disp (memP, iif.iifP[i].object, size); | |
1698 | break; | |
1699 | default: | |
1700 | as_fatal (_("iif convert internal pcrel/binary")); | |
1701 | } | |
1702 | } | |
1703 | break; | |
1704 | ||
1705 | case 2: | |
1706 | /* The object is a pointer at an expression, so | |
1707 | unpack it, note that bignums may result from the | |
1708 | expression. */ | |
1709 | evaluate_expr (&exprP, (char *) iif.iifP[i].object); | |
1710 | if (exprP.X_op == O_big || size == 8) | |
1711 | { | |
1712 | if ((k = exprP.X_add_number) > 0) | |
1713 | { | |
1714 | /* We have a bignum ie a quad. This can only | |
1715 | happens in a long suffixed instruction. */ | |
1716 | if (k * 2 > size) | |
1717 | as_bad (_("Bignum too big for long")); | |
1718 | ||
1719 | if (k == 3) | |
1720 | memP += 2; | |
1721 | ||
1722 | for (l = 0; k > 0; k--, l += 2) | |
1723 | md_number_to_chars (memP + l, | |
1724 | generic_bignum[l >> 1], | |
1725 | sizeof (LITTLENUM_TYPE)); | |
1726 | } | |
1727 | else | |
1728 | { | |
1729 | /* flonum. */ | |
1730 | LITTLENUM_TYPE words[4]; | |
1731 | ||
1732 | switch (size) | |
1733 | { | |
1734 | case 4: | |
1735 | gen_to_words (words, 2, 8); | |
1736 | md_number_to_imm (memP, (long) words[0], | |
1737 | sizeof (LITTLENUM_TYPE)); | |
1738 | md_number_to_imm (memP + sizeof (LITTLENUM_TYPE), | |
1739 | (long) words[1], | |
1740 | sizeof (LITTLENUM_TYPE)); | |
1741 | break; | |
1742 | case 8: | |
1743 | gen_to_words (words, 4, 11); | |
1744 | md_number_to_imm (memP, (long) words[0], | |
1745 | sizeof (LITTLENUM_TYPE)); | |
1746 | md_number_to_imm (memP + sizeof (LITTLENUM_TYPE), | |
1747 | (long) words[1], | |
1748 | sizeof (LITTLENUM_TYPE)); | |
1749 | md_number_to_imm ((memP + 2 | |
1750 | * sizeof (LITTLENUM_TYPE)), | |
1751 | (long) words[2], | |
1752 | sizeof (LITTLENUM_TYPE)); | |
1753 | md_number_to_imm ((memP + 3 | |
1754 | * sizeof (LITTLENUM_TYPE)), | |
1755 | (long) words[3], | |
1756 | sizeof (LITTLENUM_TYPE)); | |
1757 | break; | |
1758 | } | |
1759 | } | |
1760 | break; | |
1761 | } | |
1762 | if (exprP.X_add_symbol || | |
1763 | exprP.X_op_symbol || | |
1764 | iif.iifP[i].pcrel) | |
252b5132 RH |
1765 | { |
1766 | /* The expression was undefined due to an | |
1767 | undefined label. Create a fix so we can fix | |
c6a7ab1f | 1768 | the object later. */ |
252b5132 RH |
1769 | exprP.X_add_number += iif.iifP[i].object_adjust; |
1770 | fix_new_ns32k_exp (frag_now, | |
1771 | (long) (memP - frag_now->fr_literal), | |
1772 | size, | |
1773 | &exprP, | |
1774 | iif.iifP[i].pcrel, | |
1775 | iif.iifP[i].im_disp, | |
1776 | j, | |
1777 | iif.iifP[i].bsr, | |
1778 | inst_frag, inst_offset); | |
1779 | } | |
4eb6b71c | 1780 | else if (j) |
ea1562b3 | 1781 | md_number_to_field (memP, exprP.X_add_number, j); |
252b5132 RH |
1782 | else |
1783 | { | |
c6a7ab1f | 1784 | /* Good, just put them bytes out. */ |
252b5132 RH |
1785 | switch (iif.iifP[i].im_disp) |
1786 | { | |
1787 | case 0: | |
1788 | md_number_to_imm (memP, exprP.X_add_number, size); | |
1789 | break; | |
1790 | case 1: | |
1791 | md_number_to_disp (memP, exprP.X_add_number, size); | |
1792 | break; | |
1793 | default: | |
1794 | as_fatal (_("iif convert internal pcrel/pointer")); | |
1795 | } | |
1796 | } | |
1797 | break; | |
1798 | default: | |
1799 | as_fatal (_("Internal logic error in iif.iifP[n].type")); | |
1800 | } | |
1801 | break; | |
0b7410c4 | 1802 | |
252b5132 | 1803 | case 0: |
c6a7ab1f | 1804 | /* Too bad, the object may be undefined as far as its |
252b5132 RH |
1805 | final nsize in object memory is concerned. The size |
1806 | of the object in objectmemory is not explicitly | |
1807 | given. If the object is defined its length can be | |
c6a7ab1f | 1808 | determined and a fix can replace the frag. */ |
252b5132 RH |
1809 | { |
1810 | evaluate_expr (&exprP, (char *) iif.iifP[i].object); | |
0b7410c4 | 1811 | |
252b5132 RH |
1812 | if ((exprP.X_add_symbol || exprP.X_op_symbol) && |
1813 | !iif.iifP[i].pcrel) | |
1814 | { | |
4eb6b71c NC |
1815 | /* Size is unknown until link time so have to default. */ |
1816 | size = default_disp_size; /* Normally 4 bytes. */ | |
07726851 | 1817 | memP = frag_more (size); |
252b5132 RH |
1818 | fix_new_ns32k_exp (frag_now, |
1819 | (long) (memP - frag_now->fr_literal), | |
1820 | size, | |
1821 | &exprP, | |
1822 | 0, /* never iif.iifP[i].pcrel, */ | |
1823 | 1, /* always iif.iifP[i].im_disp */ | |
1824 | (bit_fixS *) 0, 0, | |
1825 | inst_frag, | |
1826 | inst_offset); | |
4eb6b71c | 1827 | break; /* Exit this absolute hack. */ |
252b5132 RH |
1828 | } |
1829 | ||
1830 | if (exprP.X_add_symbol || exprP.X_op_symbol) | |
c6a7ab1f NC |
1831 | { |
1832 | /* Frag it. */ | |
252b5132 | 1833 | if (exprP.X_op_symbol) |
ea1562b3 NC |
1834 | /* We cant relax this case. */ |
1835 | as_fatal (_("Can't relax difference")); | |
252b5132 RH |
1836 | else |
1837 | { | |
c6a7ab1f NC |
1838 | /* Size is not important. This gets fixed by |
1839 | relax, but we assume 0 in what follows. */ | |
07726851 | 1840 | memP = frag_more (4); /* Max size. */ |
252b5132 RH |
1841 | size = 0; |
1842 | ||
1843 | { | |
1844 | fragS *old_frag = frag_now; | |
1845 | frag_variant (rs_machine_dependent, | |
c6a7ab1f NC |
1846 | 4, /* Max size. */ |
1847 | 0, /* Size. */ | |
1848 | IND (BRANCH, UNDEF), /* Expecting | |
1849 | the worst. */ | |
252b5132 RH |
1850 | exprP.X_add_symbol, |
1851 | exprP.X_add_number, | |
1852 | inst_opcode); | |
c6a7ab1f NC |
1853 | frag_opcode_frag (old_frag) = inst_frag; |
1854 | frag_opcode_offset (old_frag) = inst_offset; | |
1855 | frag_bsr (old_frag) = iif.iifP[i].bsr; | |
252b5132 RH |
1856 | } |
1857 | } | |
1858 | } | |
1859 | else | |
1860 | { | |
c6a7ab1f | 1861 | /* This duplicates code in md_number_to_disp. */ |
252b5132 | 1862 | if (-64 <= exprP.X_add_number && exprP.X_add_number <= 63) |
ea1562b3 | 1863 | size = 1; |
252b5132 RH |
1864 | else |
1865 | { | |
1866 | if (-8192 <= exprP.X_add_number | |
1867 | && exprP.X_add_number <= 8191) | |
ea1562b3 | 1868 | size = 2; |
252b5132 RH |
1869 | else |
1870 | { | |
c6a7ab1f NC |
1871 | if (-0x20000000 <= exprP.X_add_number |
1872 | && exprP.X_add_number<=0x1fffffff) | |
ea1562b3 | 1873 | size = 4; |
252b5132 RH |
1874 | else |
1875 | { | |
4eb6b71c | 1876 | as_bad (_("Displacement to large for :d")); |
252b5132 RH |
1877 | size = 4; |
1878 | } | |
1879 | } | |
1880 | } | |
0b7410c4 | 1881 | |
c6a7ab1f | 1882 | memP = frag_more (size); |
252b5132 RH |
1883 | md_number_to_disp (memP, exprP.X_add_number, size); |
1884 | } | |
1885 | } | |
1886 | break; | |
0b7410c4 | 1887 | |
252b5132 RH |
1888 | default: |
1889 | as_fatal (_("Internal logic error in iif.iifP[].type")); | |
1890 | } | |
1891 | } | |
ea1562b3 NC |
1892 | } |
1893 | } | |
1894 | \f | |
1895 | void | |
1896 | md_assemble (char *line) | |
1897 | { | |
1898 | freeptr = freeptr_static; | |
1899 | parse (line, 0); /* Explode line to more fix form in iif. */ | |
1900 | convert_iif (); /* Convert iif to frags, fix's etc. */ | |
252b5132 | 1901 | #ifdef SHOW_NUM |
ea1562b3 | 1902 | printf (" \t\t\t%s\n", line); |
252b5132 | 1903 | #endif |
252b5132 RH |
1904 | } |
1905 | ||
ea1562b3 NC |
1906 | void |
1907 | md_begin (void) | |
252b5132 | 1908 | { |
ea1562b3 NC |
1909 | /* Build a hashtable of the instructions. */ |
1910 | const struct ns32k_opcode *ptr; | |
1911 | const char *stat; | |
1912 | const struct ns32k_opcode *endop; | |
1913 | ||
1914 | inst_hash_handle = hash_new (); | |
1915 | ||
1916 | endop = ns32k_opcodes + sizeof (ns32k_opcodes) / sizeof (ns32k_opcodes[0]); | |
1917 | for (ptr = ns32k_opcodes; ptr < endop; ptr++) | |
252b5132 | 1918 | { |
ea1562b3 NC |
1919 | if ((stat = hash_insert (inst_hash_handle, ptr->name, (char *) ptr))) |
1920 | /* Fatal. */ | |
1921 | as_fatal (_("Can't hash %s: %s"), ptr->name, stat); | |
252b5132 | 1922 | } |
ea1562b3 NC |
1923 | |
1924 | /* Some private space please! */ | |
1925 | freeptr_static = (char *) malloc (PRIVATE_SIZE); | |
252b5132 RH |
1926 | } |
1927 | ||
ea1562b3 NC |
1928 | /* Must be equal to MAX_PRECISON in atof-ieee.c. */ |
1929 | #define MAX_LITTLENUMS 6 | |
252b5132 | 1930 | |
ea1562b3 NC |
1931 | /* Turn the string pointed to by litP into a floating point constant |
1932 | of type TYPE, and emit the appropriate bytes. The number of | |
1933 | LITTLENUMS emitted is stored in *SIZEP. An error message is | |
1934 | returned, or NULL on OK. */ | |
252b5132 | 1935 | |
ea1562b3 NC |
1936 | char * |
1937 | md_atof (int type, char *litP, int *sizeP) | |
252b5132 | 1938 | { |
ea1562b3 NC |
1939 | int prec; |
1940 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
1941 | LITTLENUM_TYPE *wordP; | |
1942 | char *t; | |
4eb6b71c | 1943 | |
ea1562b3 | 1944 | switch (type) |
252b5132 | 1945 | { |
ea1562b3 NC |
1946 | case 'f': |
1947 | prec = 2; | |
1948 | break; | |
c6a7ab1f | 1949 | |
ea1562b3 NC |
1950 | case 'd': |
1951 | prec = 4; | |
1952 | break; | |
1953 | default: | |
1954 | *sizeP = 0; | |
1955 | return _("Bad call to MD_ATOF()"); | |
252b5132 | 1956 | } |
ea1562b3 NC |
1957 | |
1958 | t = atof_ieee (input_line_pointer, type, words); | |
1959 | if (t) | |
1960 | input_line_pointer = t; | |
1961 | ||
1962 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1963 | ||
1964 | for (wordP = words + prec; prec--;) | |
252b5132 | 1965 | { |
ea1562b3 NC |
1966 | md_number_to_chars (litP, (long) (*--wordP), sizeof (LITTLENUM_TYPE)); |
1967 | litP += sizeof (LITTLENUM_TYPE); | |
252b5132 | 1968 | } |
252b5132 | 1969 | |
ea1562b3 NC |
1970 | return 0; |
1971 | } | |
1972 | \f | |
c6a7ab1f | 1973 | int |
ea1562b3 | 1974 | md_pcrel_adjust (fragS *fragP) |
252b5132 RH |
1975 | { |
1976 | fragS *opcode_frag; | |
1977 | addressT opcode_address; | |
1978 | unsigned int offset; | |
0b7410c4 | 1979 | |
c6a7ab1f | 1980 | opcode_frag = frag_opcode_frag (fragP); |
252b5132 RH |
1981 | if (opcode_frag == 0) |
1982 | return 0; | |
0b7410c4 | 1983 | |
c6a7ab1f | 1984 | offset = frag_opcode_offset (fragP); |
252b5132 | 1985 | opcode_address = offset + opcode_frag->fr_address; |
0b7410c4 | 1986 | |
252b5132 RH |
1987 | return fragP->fr_address + fragP->fr_fix - opcode_address; |
1988 | } | |
1989 | ||
4eb6b71c | 1990 | static int |
ea1562b3 | 1991 | md_fix_pcrel_adjust (fixS *fixP) |
252b5132 | 1992 | { |
252b5132 RH |
1993 | fragS *opcode_frag; |
1994 | addressT opcode_address; | |
1995 | unsigned int offset; | |
0b7410c4 | 1996 | |
c6a7ab1f | 1997 | opcode_frag = fix_opcode_frag (fixP); |
252b5132 RH |
1998 | if (opcode_frag == 0) |
1999 | return 0; | |
0b7410c4 | 2000 | |
c6a7ab1f | 2001 | offset = fix_opcode_offset (fixP); |
252b5132 | 2002 | opcode_address = offset + opcode_frag->fr_address; |
0b7410c4 | 2003 | |
252b5132 RH |
2004 | return fixP->fx_where + fixP->fx_frag->fr_address - opcode_address; |
2005 | } | |
2006 | ||
2007 | /* Apply a fixS (fixup of an instruction or data that we didn't have | |
2008 | enough info to complete immediately) to the data in a frag. | |
2009 | ||
2010 | On the ns32k, everything is in a different format, so we have broken | |
2011 | out separate functions for each kind of thing we could be fixing. | |
2012 | They all get called from here. */ | |
2013 | ||
252b5132 | 2014 | void |
ea1562b3 | 2015 | md_apply_fix3 (fixS *fixP, valueT * valP, segT seg ATTRIBUTE_UNUSED) |
252b5132 | 2016 | { |
94f592af | 2017 | long val = * (long *) valP; |
252b5132 RH |
2018 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; |
2019 | ||
c6a7ab1f | 2020 | if (fix_bit_fixP (fixP)) |
ea1562b3 NC |
2021 | /* Bitfields to fix, sigh. */ |
2022 | md_number_to_field (buf, val, fix_bit_fixP (fixP)); | |
94f592af NC |
2023 | else switch (fix_im_disp (fixP)) |
2024 | { | |
2025 | case 0: | |
2026 | /* Immediate field. */ | |
2027 | md_number_to_imm (buf, val, fixP->fx_size); | |
2028 | break; | |
252b5132 | 2029 | |
94f592af NC |
2030 | case 1: |
2031 | /* Displacement field. */ | |
4eb6b71c | 2032 | /* Calculate offset. */ |
94f592af NC |
2033 | md_number_to_disp (buf, |
2034 | (fixP->fx_pcrel ? val + md_fix_pcrel_adjust (fixP) | |
2035 | : val), fixP->fx_size); | |
2036 | break; | |
2037 | ||
2038 | case 2: | |
2039 | /* Pointer in a data object. */ | |
2040 | md_number_to_chars (buf, val, fixP->fx_size); | |
2041 | break; | |
2042 | } | |
2043 | ||
2044 | if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) | |
2045 | fixP->fx_done = 1; | |
252b5132 RH |
2046 | } |
2047 | \f | |
4eb6b71c | 2048 | /* Convert a relaxed displacement to ditto in final output. */ |
252b5132 RH |
2049 | |
2050 | #ifndef BFD_ASSEMBLER | |
2051 | void | |
ea1562b3 NC |
2052 | md_convert_frag (object_headers *headers, |
2053 | segT sec, | |
2054 | fragS *fragP) | |
252b5132 RH |
2055 | #else |
2056 | void | |
ea1562b3 NC |
2057 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, |
2058 | segT sec ATTRIBUTE_UNUSED, | |
2059 | fragS *fragP) | |
252b5132 RH |
2060 | #endif |
2061 | { | |
2062 | long disp; | |
2063 | long ext = 0; | |
252b5132 | 2064 | /* Address in gas core of the place to store the displacement. */ |
4eb6b71c | 2065 | char *buffer_address = fragP->fr_fix + fragP->fr_literal; |
252b5132 RH |
2066 | /* Address in object code of the displacement. */ |
2067 | int object_address; | |
2068 | ||
252b5132 RH |
2069 | switch (fragP->fr_subtype) |
2070 | { | |
2071 | case IND (BRANCH, BYTE): | |
2072 | ext = 1; | |
2073 | break; | |
2074 | case IND (BRANCH, WORD): | |
2075 | ext = 2; | |
2076 | break; | |
2077 | case IND (BRANCH, DOUBLE): | |
2078 | ext = 4; | |
2079 | break; | |
2080 | } | |
2081 | ||
c6a7ab1f | 2082 | if (ext == 0) |
252b5132 RH |
2083 | return; |
2084 | ||
2085 | know (fragP->fr_symbol); | |
2086 | ||
2087 | object_address = fragP->fr_fix + fragP->fr_address; | |
0b7410c4 | 2088 | |
252b5132 RH |
2089 | /* The displacement of the address, from current location. */ |
2090 | disp = (S_GET_VALUE (fragP->fr_symbol) + fragP->fr_offset) - object_address; | |
c6a7ab1f | 2091 | disp += md_pcrel_adjust (fragP); |
252b5132 RH |
2092 | |
2093 | md_number_to_disp (buffer_address, (long) disp, (int) ext); | |
2094 | fragP->fr_fix += ext; | |
2095 | } | |
2096 | ||
2097 | /* This function returns the estimated size a variable object will occupy, | |
2098 | one can say that we tries to guess the size of the objects before we | |
c6a7ab1f | 2099 | actually know it. */ |
252b5132 RH |
2100 | |
2101 | int | |
ea1562b3 | 2102 | md_estimate_size_before_relax (fragS *fragP, segT segment) |
252b5132 | 2103 | { |
606ab118 | 2104 | if (fragP->fr_subtype == IND (BRANCH, UNDEF)) |
252b5132 | 2105 | { |
606ab118 | 2106 | if (S_GET_SEGMENT (fragP->fr_symbol) != segment) |
252b5132 | 2107 | { |
606ab118 | 2108 | /* We don't relax symbols defined in another segment. The |
c6a7ab1f | 2109 | thing to do is to assume the object will occupy 4 bytes. */ |
252b5132 RH |
2110 | fix_new_ns32k (fragP, |
2111 | (int) (fragP->fr_fix), | |
2112 | 4, | |
2113 | fragP->fr_symbol, | |
2114 | fragP->fr_offset, | |
2115 | 1, | |
2116 | 1, | |
2117 | 0, | |
4eb6b71c | 2118 | frag_bsr(fragP), /* Sequent hack. */ |
c6a7ab1f NC |
2119 | frag_opcode_frag (fragP), |
2120 | frag_opcode_offset (fragP)); | |
252b5132 | 2121 | fragP->fr_fix += 4; |
252b5132 | 2122 | frag_wane (fragP); |
606ab118 | 2123 | return 4; |
252b5132 | 2124 | } |
93c2a809 | 2125 | |
606ab118 AM |
2126 | /* Relaxable case. Set up the initial guess for the variable |
2127 | part of the frag. */ | |
2128 | fragP->fr_subtype = IND (BRANCH, BYTE); | |
252b5132 | 2129 | } |
0b7410c4 | 2130 | |
606ab118 AM |
2131 | if (fragP->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0])) |
2132 | abort (); | |
2133 | ||
2134 | /* Return the size of the variable part of the frag. */ | |
2135 | return md_relax_table[fragP->fr_subtype].rlx_length; | |
252b5132 RH |
2136 | } |
2137 | ||
2138 | int md_short_jump_size = 3; | |
2139 | int md_long_jump_size = 5; | |
c6a7ab1f | 2140 | const int md_reloc_size = 8; /* Size of relocation record. */ |
252b5132 RH |
2141 | |
2142 | void | |
ea1562b3 NC |
2143 | md_create_short_jump (char *ptr, |
2144 | addressT from_addr, | |
2145 | addressT to_addr, | |
2146 | fragS *frag ATTRIBUTE_UNUSED, | |
2147 | symbolS *to_symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
2148 | { |
2149 | valueT offset; | |
2150 | ||
2151 | offset = to_addr - from_addr; | |
2152 | md_number_to_chars (ptr, (valueT) 0xEA, 1); | |
2153 | md_number_to_disp (ptr + 1, (valueT) offset, 2); | |
2154 | } | |
2155 | ||
2156 | void | |
ea1562b3 NC |
2157 | md_create_long_jump (char *ptr, |
2158 | addressT from_addr, | |
2159 | addressT to_addr, | |
2160 | fragS *frag ATTRIBUTE_UNUSED, | |
2161 | symbolS *to_symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
2162 | { |
2163 | valueT offset; | |
2164 | ||
2165 | offset = to_addr - from_addr; | |
2166 | md_number_to_chars (ptr, (valueT) 0xEA, 1); | |
2167 | md_number_to_disp (ptr + 1, (valueT) offset, 4); | |
2168 | } | |
2169 | \f | |
5a38dc70 | 2170 | const char *md_shortopts = "m:"; |
c6a7ab1f NC |
2171 | |
2172 | struct option md_longopts[] = | |
2173 | { | |
4eb6b71c NC |
2174 | #define OPTION_DISP_SIZE (OPTION_MD_BASE) |
2175 | {"disp-size-default", required_argument , NULL, OPTION_DISP_SIZE}, | |
252b5132 RH |
2176 | {NULL, no_argument, NULL, 0} |
2177 | }; | |
c6a7ab1f NC |
2178 | |
2179 | size_t md_longopts_size = sizeof (md_longopts); | |
252b5132 RH |
2180 | |
2181 | int | |
ea1562b3 | 2182 | md_parse_option (int c, char *arg) |
252b5132 RH |
2183 | { |
2184 | switch (c) | |
2185 | { | |
2186 | case 'm': | |
2187 | if (!strcmp (arg, "32032")) | |
2188 | { | |
2189 | cpureg = cpureg_032; | |
2190 | mmureg = mmureg_032; | |
2191 | } | |
2192 | else if (!strcmp (arg, "32532")) | |
2193 | { | |
2194 | cpureg = cpureg_532; | |
2195 | mmureg = mmureg_532; | |
2196 | } | |
2197 | else | |
2198 | { | |
4eb6b71c | 2199 | as_warn (_("invalid architecture option -m%s, ignored"), arg); |
252b5132 RH |
2200 | return 0; |
2201 | } | |
2202 | break; | |
4eb6b71c NC |
2203 | case OPTION_DISP_SIZE: |
2204 | { | |
2205 | int size = atoi(arg); | |
2206 | switch (size) | |
2207 | { | |
2208 | case 1: case 2: case 4: | |
2209 | default_disp_size = size; | |
2210 | break; | |
2211 | default: | |
2212 | as_warn (_("invalid default displacement size \"%s\". Defaulting to %d."), | |
2213 | arg, default_disp_size); | |
2214 | } | |
2215 | break; | |
2216 | } | |
252b5132 RH |
2217 | |
2218 | default: | |
2219 | return 0; | |
2220 | } | |
2221 | ||
2222 | return 1; | |
2223 | } | |
2224 | ||
2225 | void | |
ea1562b3 | 2226 | md_show_usage (FILE *stream) |
252b5132 | 2227 | { |
c6a7ab1f | 2228 | fprintf (stream, _("\ |
252b5132 | 2229 | NS32K options:\n\ |
4eb6b71c NC |
2230 | -m32032 | -m32532 select variant of NS32K architecture\n\ |
2231 | --disp-size-default=<1|2|4>\n")); | |
252b5132 | 2232 | } |
252b5132 | 2233 | \f |
252b5132 RH |
2234 | /* This is TC_CONS_FIX_NEW, called by emit_expr in read.c. */ |
2235 | ||
2236 | void | |
ea1562b3 NC |
2237 | cons_fix_new_ns32k (fragS *frag, /* Which frag? */ |
2238 | int where, /* Where in that frag? */ | |
2239 | int size, /* 1, 2 or 4 usually. */ | |
2240 | expressionS *exp) /* Expression. */ | |
252b5132 RH |
2241 | { |
2242 | fix_new_ns32k_exp (frag, where, size, exp, | |
2243 | 0, 2, 0, 0, 0, 0); | |
2244 | } | |
2245 | ||
2246 | /* We have no need to default values of symbols. */ | |
2247 | ||
2248 | symbolS * | |
ea1562b3 | 2249 | md_undefined_symbol (char *name ATTRIBUTE_UNUSED) |
252b5132 RH |
2250 | { |
2251 | return 0; | |
2252 | } | |
2253 | ||
2254 | /* Round up a section size to the appropriate boundary. */ | |
c6a7ab1f | 2255 | |
252b5132 | 2256 | valueT |
ea1562b3 | 2257 | md_section_align (segT segment ATTRIBUTE_UNUSED, valueT size) |
252b5132 | 2258 | { |
c6a7ab1f | 2259 | return size; /* Byte alignment is fine. */ |
252b5132 RH |
2260 | } |
2261 | ||
2262 | /* Exactly what point is a PC-relative offset relative TO? On the | |
c6a7ab1f NC |
2263 | ns32k, they're relative to the start of the instruction. */ |
2264 | ||
252b5132 | 2265 | long |
ea1562b3 | 2266 | md_pcrel_from (fixS *fixP) |
252b5132 RH |
2267 | { |
2268 | long res; | |
4eb6b71c | 2269 | |
252b5132 RH |
2270 | res = fixP->fx_where + fixP->fx_frag->fr_address; |
2271 | #ifdef SEQUENT_COMPATABILITY | |
c6a7ab1f NC |
2272 | if (frag_bsr (fixP->fx_frag)) |
2273 | res += 0x12 /* FOO Kludge alert! */ | |
252b5132 RH |
2274 | #endif |
2275 | return res; | |
2276 | } | |
2277 | ||
2278 | #ifdef BFD_ASSEMBLER | |
2279 | ||
2280 | arelent * | |
ea1562b3 | 2281 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
252b5132 RH |
2282 | { |
2283 | arelent *rel; | |
2284 | bfd_reloc_code_real_type code; | |
2285 | ||
c6a7ab1f | 2286 | code = reloc (fixp->fx_size, fixp->fx_pcrel, fix_im_disp (fixp)); |
252b5132 | 2287 | |
ea1562b3 NC |
2288 | rel = xmalloc (sizeof (arelent)); |
2289 | rel->sym_ptr_ptr = xmalloc (sizeof (asymbol *)); | |
310b5aa2 | 2290 | *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
252b5132 RH |
2291 | rel->address = fixp->fx_frag->fr_address + fixp->fx_where; |
2292 | if (fixp->fx_pcrel) | |
2293 | rel->addend = fixp->fx_addnumber; | |
2294 | else | |
2295 | rel->addend = 0; | |
2296 | ||
2297 | rel->howto = bfd_reloc_type_lookup (stdoutput, code); | |
2298 | if (!rel->howto) | |
2299 | { | |
2300 | const char *name; | |
2301 | ||
2302 | name = S_GET_NAME (fixp->fx_addsy); | |
2303 | if (name == NULL) | |
2304 | name = _("<unknown>"); | |
2305 | as_fatal (_("Cannot find relocation type for symbol %s, code %d"), | |
2306 | name, (int) code); | |
2307 | } | |
2308 | ||
2309 | return rel; | |
2310 | } | |
2311 | #else /* BFD_ASSEMBLER */ | |
2312 | ||
2313 | #ifdef OBJ_AOUT | |
2314 | void | |
ea1562b3 NC |
2315 | cons_fix_new_ns32k (char *where, |
2316 | struct fix *fixP, | |
2317 | relax_addressT segment_address_in_file) | |
252b5132 | 2318 | { |
c6a7ab1f NC |
2319 | /* In: Length of relocation (or of address) in chars: 1, 2 or 4. |
2320 | Out: GNU LD relocation length code: 0, 1, or 2. */ | |
252b5132 | 2321 | |
c6a7ab1f | 2322 | static unsigned char nbytes_r_length[] = { 42, 0, 1, 42, 2 }; |
252b5132 RH |
2323 | long r_symbolnum; |
2324 | ||
2325 | know (fixP->fx_addsy != NULL); | |
2326 | ||
2327 | md_number_to_chars (where, | |
2328 | fixP->fx_frag->fr_address + fixP->fx_where - segment_address_in_file, | |
2329 | 4); | |
2330 | ||
2331 | r_symbolnum = (S_IS_DEFINED (fixP->fx_addsy) | |
2332 | ? S_GET_TYPE (fixP->fx_addsy) | |
2333 | : fixP->fx_addsy->sy_number); | |
2334 | ||
2335 | md_number_to_chars (where + 4, | |
2336 | ((long) (r_symbolnum) | |
2337 | | (long) (fixP->fx_pcrel << 24) | |
2338 | | (long) (nbytes_r_length[fixP->fx_size] << 25) | |
2339 | | (long) ((!S_IS_DEFINED (fixP->fx_addsy)) << 27) | |
c6a7ab1f NC |
2340 | | (long) (fix_bsr (fixP) << 28) |
2341 | | (long) (fix_im_disp (fixP) << 29)), | |
252b5132 RH |
2342 | 4); |
2343 | } | |
2344 | ||
2345 | #endif /* OBJ_AOUT */ | |
67c1ffbe | 2346 | #endif /* BFD_ASSEMBLER */ |