* symbols.c (colon) [!WORKING_DOT_WORD]: Don't declare
[deliverable/binutils-gdb.git] / gas / config / tc-ns32k.c
CommitLineData
252b5132 1/* ns32k.c -- Assemble on the National Semiconductor 32k series
93c2a809 2 Copyright 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
5a38dc70 3 2001, 2002
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) \
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;
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
63const char comment_chars[] = "#";
64const char line_comment_chars[] = LINE_COMMENT_CHARS;
63a0b638 65const char line_separator_chars[] = ";";
4eb6b71c 66static 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
72struct addr_mode
73 {
4eb6b71c
NC
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
78 floating-point-register. */
79 char am_size; /* Estimated max size of general addr-mode
80 parts. */
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)
85 or immediates(s) (ascii). */
86 char index_byte; /* Index byte. */
252b5132
RH
87 };
88typedef struct addr_mode addr_modeS;
89
c6a7ab1f 90char *freeptr, *freeptr_static; /* Points at some number of free bytes. */
252b5132
RH
91struct hash_control *inst_hash_handle;
92
c6a7ab1f 93struct ns32k_opcode *desc; /* Pointer at description of instruction. */
252b5132
RH
94addr_modeS addr_modeP;
95const char EXP_CHARS[] = "eE";
c6a7ab1f
NC
96const 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 107struct ns32k_option
c6a7ab1f
NC
108{
109 char *pattern;
110 unsigned long or;
111 unsigned long and;
112};
252b5132
RH
113
114typedef struct
115 {
4eb6b71c
NC
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
122 start to the displacement. */
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. */
252b5132 126 int addr_mode; /* What addrmode do we associate with this
4eb6b71c
NC
127 iif-entry. */
128 char bsr; /* Sequent hack. */
129 } iif_entryT; /* Internal Instruction Format. */
252b5132
RH
130
131struct int_ins_form
132 {
0b7410c4 133 int instr_size; /* Max size of instruction in bytes. */
252b5132
RH
134 iif_entryT iifP[IIF_ENTRIES + 1];
135 };
c6a7ab1f 136
252b5132
RH
137struct int_ins_form iif;
138expressionS exprP;
139char *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 187struct 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 199struct 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 211struct 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 219struct 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 226struct 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 233struct 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 250struct 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 267struct 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 279struct 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 290struct 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)
306struct ns32k_option *cpureg = cpureg_532;
307struct ns32k_option *mmureg = mmureg_532;
308#else
309struct ns32k_option *cpureg = cpureg_032;
310struct ns32k_option *mmureg = mmureg_032;
311#endif
312\f
313
314const 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
343const 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
359char 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
367char disp_size[] =
368{4, 1, 2, 0, 4};
369\f
4eb6b71c
NC
370static void evaluate_expr PARAMS ((expressionS * resultP, char *));
371static void md_number_to_disp PARAMS ((char *, long, int));
372static void md_number_to_imm PARAMS ((char *, long, int));
373static void md_number_to_field PARAMS ((char *, long, bit_fixS *));
252b5132 374
c6a7ab1f
NC
375/* Parse a general operand into an addressingmode struct
376
377 In: pointer at operand in ascii form
378 pointer at addr_mode struct for result
379 the level of recursion. (always 0 or 1)
252b5132 380
c6a7ab1f 381 Out: data in addr_mode struct. */
252b5132 382
4eb6b71c
NC
383static int addr_mode PARAMS ((char *, addr_modeS *, int));
384
385static int
252b5132
RH
386addr_mode (operand, addr_modeP, recursive_level)
387 char *operand;
4eb6b71c 388 addr_modeS *addr_modeP;
252b5132
RH
389 int recursive_level;
390{
4eb6b71c
NC
391 char *str;
392 int i;
393 int strl;
394 int mode;
252b5132 395 int j;
0b7410c4 396
4eb6b71c
NC
397 mode = DEFAULT; /* Default. */
398 addr_modeP->scaled_mode = 0; /* Why not. */
399 addr_modeP->scaled_reg = 0; /* If 0, not scaled index. */
252b5132
RH
400 addr_modeP->float_flag = 0;
401 addr_modeP->am_size = 0;
402 addr_modeP->im_disp = 0;
4eb6b71c 403 addr_modeP->pcrel = 0; /* Not set in this function. */
252b5132
RH
404 addr_modeP->disp_suffix[0] = 0;
405 addr_modeP->disp_suffix[1] = 0;
406 addr_modeP->disp[0] = NULL;
407 addr_modeP->disp[1] = NULL;
408 str = operand;
0b7410c4 409
252b5132 410 if (str[0] == 0)
c6a7ab1f
NC
411 return 0;
412
252b5132 413 strl = strlen (str);
0b7410c4 414
252b5132
RH
415 switch (str[0])
416 {
c6a7ab1f
NC
417 /* The following three case statements controls the mode-chars
418 this is the place to ed if you want to change them. */
252b5132
RH
419#ifdef ABSOLUTE_PREFIX
420 case ABSOLUTE_PREFIX:
421 if (str[strl - 1] == ']')
422 break;
423 addr_modeP->mode = 21; /* absolute */
424 addr_modeP->disp[0] = str + 1;
c6a7ab1f 425 return -1;
252b5132
RH
426#endif
427#ifdef IMMEDIATE_PREFIX
428 case IMMEDIATE_PREFIX:
429 if (str[strl - 1] == ']')
430 break;
431 addr_modeP->mode = 20; /* immediate */
432 addr_modeP->disp[0] = str + 1;
c6a7ab1f 433 return -1;
252b5132
RH
434#endif
435 case '.':
436 if (str[strl - 1] != ']')
437 {
438 switch (str[1])
439 {
440 case '-':
441 case '+':
442 if (str[2] != '\000')
443 {
67c1ffbe 444 addr_modeP->mode = 27; /* pc-relative */
252b5132 445 addr_modeP->disp[0] = str + 2;
c6a7ab1f 446 return -1;
252b5132
RH
447 }
448 default:
4eb6b71c 449 as_bad (_("Invalid syntax in PC-relative addressing mode"));
c6a7ab1f 450 return 0;
252b5132
RH
451 }
452 }
453 break;
454 case 'e':
455 if (str[strl - 1] != ']')
456 {
457 if ((!strncmp (str, "ext(", 4)) && strl > 7)
458 { /* external */
459 addr_modeP->disp[0] = str + 4;
460 i = 0;
461 j = 2;
462 do
4eb6b71c 463 { /* disp[0]'s termination point. */
252b5132
RH
464 j += 1;
465 if (str[j] == '(')
466 i++;
467 if (str[j] == ')')
468 i--;
469 }
470 while (j < strl && i != 0);
471 if (i != 0 || !(str[j + 1] == '-' || str[j + 1] == '+'))
472 {
4eb6b71c 473 as_bad (_("Invalid syntax in External addressing mode"));
252b5132
RH
474 return (0);
475 }
476 str[j] = '\000'; /* null terminate disp[0] */
477 addr_modeP->disp[1] = str + j + 2;
478 addr_modeP->mode = 22;
c6a7ab1f 479 return -1;
252b5132
RH
480 }
481 }
482 break;
0b7410c4 483
c6a7ab1f
NC
484 default:
485 ;
252b5132 486 }
0b7410c4 487
252b5132 488 strl = strlen (str);
0b7410c4 489
252b5132
RH
490 switch (strl)
491 {
492 case 2:
493 switch (str[0])
494 {
495 case 'f':
496 addr_modeP->float_flag = 1;
c6a7ab1f 497 /* Drop through. */
252b5132
RH
498 case 'r':
499 if (str[1] >= '0' && str[1] < '8')
500 {
501 addr_modeP->mode = str[1] - '0';
c6a7ab1f 502 return -1;
252b5132 503 }
c6a7ab1f
NC
504 break;
505 default:
506 break;
252b5132 507 }
c6a7ab1f 508 /* Drop through. */
0b7410c4 509
252b5132
RH
510 case 3:
511 if (!strncmp (str, "tos", 3))
512 {
513 addr_modeP->mode = 23; /* TopOfStack */
c6a7ab1f 514 return -1;
252b5132 515 }
c6a7ab1f 516 break;
0b7410c4 517
c6a7ab1f
NC
518 default:
519 break;
252b5132 520 }
0b7410c4 521
252b5132
RH
522 if (strl > 4)
523 {
524 if (str[strl - 1] == ')')
525 {
526 if (str[strl - 2] == ')')
527 {
528 if (!strncmp (&str[strl - 5], "(fp", 3))
c6a7ab1f
NC
529 mode = 16; /* Memory Relative. */
530 else if (!strncmp (&str[strl - 5], "(sp", 3))
531 mode = 17;
532 else if (!strncmp (&str[strl - 5], "(sb", 3))
533 mode = 18;
534
252b5132 535 if (mode != DEFAULT)
4eb6b71c
NC
536 {
537 /* Memory relative. */
252b5132 538 addr_modeP->mode = mode;
c6a7ab1f 539 j = strl - 5; /* Temp for end of disp[0]. */
252b5132 540 i = 0;
0b7410c4 541
252b5132
RH
542 do
543 {
544 strl -= 1;
545 if (str[strl] == ')')
546 i++;
547 if (str[strl] == '(')
548 i--;
549 }
550 while (strl > -1 && i != 0);
0b7410c4 551
252b5132
RH
552 if (i != 0)
553 {
4eb6b71c 554 as_bad (_("Invalid syntax in Memory Relative addressing mode"));
252b5132
RH
555 return (0);
556 }
0b7410c4 557
252b5132
RH
558 addr_modeP->disp[1] = str;
559 addr_modeP->disp[0] = str + strl + 1;
0b7410c4 560 str[j] = '\000'; /* Null terminate disp[0] . */
c6a7ab1f 561 str[strl] = '\000'; /* Null terminate disp[1]. */
0b7410c4 562
c6a7ab1f 563 return -1;
252b5132
RH
564 }
565 }
0b7410c4 566
252b5132
RH
567 switch (str[strl - 3])
568 {
569 case 'r':
570 case 'R':
571 if (str[strl - 2] >= '0'
572 && str[strl - 2] < '8'
573 && str[strl - 4] == '(')
574 {
575 addr_modeP->mode = str[strl - 2] - '0' + 8;
576 addr_modeP->disp[0] = str;
577 str[strl - 4] = 0;
c6a7ab1f 578 return -1; /* reg rel */
252b5132 579 }
c6a7ab1f 580 /* Drop through. */
0b7410c4 581
252b5132
RH
582 default:
583 if (!strncmp (&str[strl - 4], "(fp", 3))
c6a7ab1f
NC
584 mode = 24;
585 else if (!strncmp (&str[strl - 4], "(sp", 3))
586 mode = 25;
587 else if (!strncmp (&str[strl - 4], "(sb", 3))
588 mode = 26;
589 else if (!strncmp (&str[strl - 4], "(pc", 3))
590 mode = 27;
0b7410c4 591
252b5132
RH
592 if (mode != DEFAULT)
593 {
594 addr_modeP->mode = mode;
595 addr_modeP->disp[0] = str;
596 str[strl - 4] = '\0';
0b7410c4 597
c6a7ab1f 598 return -1; /* Memory space. */
252b5132
RH
599 }
600 }
601 }
0b7410c4 602
c6a7ab1f 603 /* No trailing ')' do we have a ']' ? */
252b5132
RH
604 if (str[strl - 1] == ']')
605 {
606 switch (str[strl - 2])
607 {
608 case 'b':
609 mode = 28;
610 break;
611 case 'w':
612 mode = 29;
613 break;
614 case 'd':
615 mode = 30;
616 break;
617 case 'q':
618 mode = 31;
619 break;
c6a7ab1f 620 default:
4eb6b71c 621 as_bad (_("Invalid scaled-indexed mode, use (b,w,d,q)"));
0b7410c4 622
252b5132
RH
623 if (str[strl - 3] != ':' || str[strl - 6] != '['
624 || str[strl - 5] == 'r' || str[strl - 4] < '0'
625 || str[strl - 4] > '7')
4eb6b71c 626 as_bad (_("Syntax in scaled-indexed mode, use [Rn:m] where n=[0..7] m={b,w,d,q}"));
c6a7ab1f
NC
627 } /* Scaled index. */
628
629 if (recursive_level > 0)
630 {
4eb6b71c 631 as_bad (_("Scaled-indexed addressing mode combined with scaled-index"));
c6a7ab1f
NC
632 return 0;
633 }
0b7410c4 634
4eb6b71c
NC
635 addr_modeP->am_size += 1; /* scaled index byte. */
636 j = str[strl - 4] - '0'; /* store temporary. */
637 str[strl - 6] = '\000'; /* nullterminate for recursive call. */
c6a7ab1f 638 i = addr_mode (str, addr_modeP, 1);
0b7410c4 639
c6a7ab1f
NC
640 if (!i || addr_modeP->mode == 20)
641 {
4eb6b71c 642 as_bad (_("Invalid or illegal addressing mode combined with scaled-index"));
c6a7ab1f
NC
643 return 0;
644 }
0b7410c4 645
c6a7ab1f
NC
646 addr_modeP->scaled_mode = addr_modeP->mode; /* Store the inferior mode. */
647 addr_modeP->mode = mode;
648 addr_modeP->scaled_reg = j + 1;
0b7410c4 649
c6a7ab1f 650 return -1;
252b5132
RH
651 }
652 }
0b7410c4 653
c6a7ab1f 654 addr_modeP->mode = DEFAULT; /* Default to whatever. */
252b5132 655 addr_modeP->disp[0] = str;
0b7410c4 656
c6a7ab1f 657 return -1;
252b5132
RH
658}
659\f
660/* ptr points at string addr_modeP points at struct with result This
661 routine calls addr_mode to determine the general addr.mode of the
662 operand. When this is ready it parses the displacements for size
663 specifying suffixes and determines size of immediate mode via
664 ns32k-opcode. Also builds index bytes if needed. */
c6a7ab1f 665
4eb6b71c
NC
666static int get_addr_mode PARAMS ((char *, addr_modeS *));
667static int
252b5132
RH
668get_addr_mode (ptr, addr_modeP)
669 char *ptr;
670 addr_modeS *addr_modeP;
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
NC
804static void optlist PARAMS ((char *, struct ns32k_option *, unsigned long *));
805static void
252b5132 806optlist (str, optionP, default_map)
c6a7ab1f
NC
807 char *str; /* The string to extract options from. */
808 struct ns32k_option *optionP; /* How to search the string. */
809 unsigned long *default_map; /* Default pattern and output. */
252b5132 810{
4eb6b71c
NC
811 int i, j, k, strlen1, strlen2;
812 char *patternP, *strP;
0b7410c4 813
252b5132 814 strlen1 = strlen (str);
0b7410c4 815
252b5132 816 if (strlen1 < 1)
c6a7ab1f 817 as_fatal (_("Very short instr to option, ie you can't do it on a NULLstr"));
0b7410c4 818
252b5132
RH
819 for (i = 0; optionP[i].pattern != 0; i++)
820 {
821 strlen2 = strlen (optionP[i].pattern);
0b7410c4 822
252b5132
RH
823 for (j = 0; j < strlen1; j++)
824 {
825 patternP = optionP[i].pattern;
826 strP = &str[j];
0b7410c4 827
252b5132
RH
828 for (k = 0; k < strlen2; k++)
829 {
830 if (*(strP++) != *(patternP++))
831 break;
832 }
0b7410c4 833
252b5132
RH
834 if (k == strlen2)
835 { /* match */
836 *default_map |= optionP[i].or;
837 *default_map &= optionP[i].and;
838 }
839 }
840 }
841}
842
c6a7ab1f 843/* Search struct for symbols.
252b5132
RH
844 This function is used to get the short integer form of reg names in
845 the instructions lmr, smr, lpr, spr return true if str is found in
c6a7ab1f 846 list. */
252b5132 847
4eb6b71c
NC
848static int list_search PARAMS ((char *, struct ns32k_option *, unsigned long *));
849
850static int
252b5132 851list_search (str, optionP, default_map)
c6a7ab1f
NC
852 char *str; /* The string to match. */
853 struct ns32k_option *optionP; /* List to search. */
854 unsigned long *default_map; /* Default pattern and output. */
252b5132 855{
4eb6b71c 856 int i;
0b7410c4 857
252b5132
RH
858 for (i = 0; optionP[i].pattern != 0; i++)
859 {
860 if (!strncmp (optionP[i].pattern, str, 20))
c6a7ab1f
NC
861 {
862 /* Use strncmp to be safe. */
252b5132
RH
863 *default_map |= optionP[i].or;
864 *default_map &= optionP[i].and;
0b7410c4 865
252b5132
RH
866 return -1;
867 }
868 }
0b7410c4 869
4eb6b71c 870 as_bad (_("No such entry in list. (cpu/mmu register)"));
252b5132
RH
871 return 0;
872}
873
874static void
875evaluate_expr (resultP, ptr)
876 expressionS *resultP;
877 char *ptr;
878{
4eb6b71c 879 char *tmp_line;
252b5132
RH
880
881 tmp_line = input_line_pointer;
882 input_line_pointer = ptr;
4eb6b71c 883 expression (resultP);
252b5132
RH
884 input_line_pointer = tmp_line;
885}
886\f
887/* Convert operands to iif-format and adds bitfields to the opcode.
888 Operands are parsed in such an order that the opcode is updated from
889 its most significant bit, that is when the operand need to alter the
890 opcode.
67c1ffbe 891 Be careful not to put to objects in the same iif-slot. */
252b5132 892
4cd62c96
AM
893static void encode_operand
894 PARAMS ((int, char **, const char *, const char *, char, char));
895
4eb6b71c 896static void
252b5132
RH
897encode_operand (argc, argv, operandsP, suffixP, im_size, opcode_bit_ptr)
898 int argc;
899 char **argv;
4cd62c96
AM
900 const char *operandsP;
901 const char *suffixP;
4eb6b71c 902 char im_size ATTRIBUTE_UNUSED;
252b5132
RH
903 char opcode_bit_ptr;
904{
4eb6b71c 905 int i, j;
252b5132 906 char d;
4eb6b71c
NC
907 int pcrel, b, loop, pcrel_adjust;
908 unsigned long tmp;
0b7410c4 909
252b5132
RH
910 for (loop = 0; loop < argc; loop++)
911 {
c6a7ab1f
NC
912 /* What operand are we supposed to work on. */
913 i = operandsP[loop << 1] - '1';
252b5132
RH
914 if (i > 3)
915 as_fatal (_("Internal consistency error. check ns32k-opcode.h"));
0b7410c4 916
252b5132
RH
917 pcrel = 0;
918 pcrel_adjust = 0;
919 tmp = 0;
0b7410c4 920
252b5132
RH
921 switch ((d = operandsP[(loop << 1) + 1]))
922 {
4eb6b71c
NC
923 case 'f': /* Operand of sfsr turns out to be a nasty
924 specialcase. */
252b5132 925 opcode_bit_ptr -= 5;
4eb6b71c
NC
926 case 'Z': /* Float not immediate. */
927 case 'F': /* 32 bit float general form. */
928 case 'L': /* 64 bit float. */
929 case 'I': /* Integer not immediate. */
930 case 'B': /* Byte */
931 case 'W': /* Word */
932 case 'D': /* Double-word. */
933 case 'A': /* Double-word gen-address-form ie no regs
934 allowed. */
252b5132 935 get_addr_mode (argv[i], &addr_modeP);
0b7410c4 936
c6a7ab1f
NC
937 if ((addr_modeP.mode == 20) &&
938 (d == 'I' || d == 'Z' || d == 'A'))
939 as_fatal (d == 'A'? _("Address of immediate operand"):
940 _("Invalid immediate write operand."));
252b5132
RH
941
942 if (opcode_bit_ptr == desc->opcode_size)
943 b = 4;
944 else
945 b = 6;
0b7410c4 946
252b5132
RH
947 for (j = b; j < (b + 2); j++)
948 {
949 if (addr_modeP.disp[j - b])
950 {
951 IIF (j,
952 2,
953 addr_modeP.disp_suffix[j - b],
954 (unsigned long) addr_modeP.disp[j - b],
955 0,
956 addr_modeP.pcrel,
957 iif.instr_size,
958 addr_modeP.im_disp,
959 IND (BRANCH, BYTE),
960 NULL,
961 (addr_modeP.scaled_reg ? addr_modeP.scaled_mode
962 : addr_modeP.mode),
963 0);
964 }
965 }
0b7410c4 966
252b5132
RH
967 opcode_bit_ptr -= 5;
968 iif.iifP[1].object |= ((long) addr_modeP.mode) << opcode_bit_ptr;
0b7410c4 969
252b5132
RH
970 if (addr_modeP.scaled_reg)
971 {
972 j = b / 2;
973 IIF (j, 1, 1, (unsigned long) addr_modeP.index_byte,
974 0, 0, 0, 0, 0, NULL, -1, 0);
975 }
976 break;
0b7410c4 977
4eb6b71c
NC
978 case 'b': /* Multiple instruction disp. */
979 freeptr++; /* OVE:this is an useful hack. */
980 sprintf (freeptr, "((%s-1)*%d)", argv[i], desc->im_size);
252b5132 981 argv[i] = freeptr;
67c1ffbe 982 pcrel -= 1; /* Make pcrel 0 in spite of what case 'p':
4eb6b71c 983 wants. */
252b5132 984 /* fall thru */
4eb6b71c 985 case 'p': /* Displacement - pc relative addressing. */
252b5132
RH
986 pcrel += 1;
987 /* fall thru */
4eb6b71c 988 case 'd': /* Displacement. */
252b5132
RH
989 iif.instr_size += suffixP[i] ? suffixP[i] : 4;
990 IIF (12, 2, suffixP[i], (unsigned long) argv[i], 0,
991 pcrel, pcrel_adjust, 1, IND (BRANCH, BYTE), NULL, -1, 0);
992 break;
4eb6b71c
NC
993 case 'H': /* Sequent-hack: the linker wants a bit set
994 when bsr. */
252b5132
RH
995 pcrel = 1;
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, 1);
999 break;
1000 case 'q': /* quick */
1001 opcode_bit_ptr -= 4;
1002 IIF (11, 2, 42, (unsigned long) argv[i], 0, 0, 0, 0, 0,
1003 bit_fix_new (4, opcode_bit_ptr, -8, 7, 0, 1, 0), -1, 0);
1004 break;
4eb6b71c 1005 case 'r': /* Register number (3 bits). */
252b5132
RH
1006 list_search (argv[i], opt6, &tmp);
1007 opcode_bit_ptr -= 3;
1008 iif.iifP[1].object |= tmp << opcode_bit_ptr;
1009 break;
4eb6b71c 1010 case 'O': /* Setcfg instruction optionslist. */
252b5132
RH
1011 optlist (argv[i], opt3, &tmp);
1012 opcode_bit_ptr -= 4;
1013 iif.iifP[1].object |= tmp << 15;
1014 break;
4eb6b71c 1015 case 'C': /* Cinv instruction optionslist. */
252b5132
RH
1016 optlist (argv[i], opt4, &tmp);
1017 opcode_bit_ptr -= 4;
4eb6b71c 1018 iif.iifP[1].object |= tmp << 15; /* Insert the regtype in opcode. */
252b5132 1019 break;
4eb6b71c 1020 case 'S': /* String instruction options list. */
252b5132
RH
1021 optlist (argv[i], opt5, &tmp);
1022 opcode_bit_ptr -= 4;
1023 iif.iifP[1].object |= tmp << 15;
1024 break;
1025 case 'u':
4eb6b71c 1026 case 'U': /* Register list. */
252b5132
RH
1027 IIF (10, 1, 1, 0, 0, 0, 0, 0, 0, NULL, -1, 0);
1028 switch (operandsP[(i << 1) + 1])
1029 {
4eb6b71c 1030 case 'u': /* Restore, exit. */
252b5132
RH
1031 optlist (argv[i], opt1, &iif.iifP[10].object);
1032 break;
4eb6b71c 1033 case 'U': /* Save, enter. */
252b5132
RH
1034 optlist (argv[i], opt2, &iif.iifP[10].object);
1035 break;
1036 }
1037 iif.instr_size += 1;
1038 break;
4eb6b71c 1039 case 'M': /* MMU register. */
252b5132
RH
1040 list_search (argv[i], mmureg, &tmp);
1041 opcode_bit_ptr -= 4;
1042 iif.iifP[1].object |= tmp << opcode_bit_ptr;
1043 break;
4eb6b71c 1044 case 'P': /* CPU register. */
252b5132
RH
1045 list_search (argv[i], cpureg, &tmp);
1046 opcode_bit_ptr -= 4;
1047 iif.iifP[1].object |= tmp << opcode_bit_ptr;
1048 break;
4eb6b71c
NC
1049 case 'g': /* Inss exts. */
1050 iif.instr_size += 1; /* 1 byte is allocated after the opcode. */
252b5132 1051 IIF (10, 2, 1,
4eb6b71c 1052 (unsigned long) argv[i], /* i always 2 here. */
252b5132 1053 0, 0, 0, 0, 0,
4eb6b71c
NC
1054 bit_fix_new (3, 5, 0, 7, 0, 0, 0), /* A bit_fix is targeted to
1055 the byte. */
252b5132
RH
1056 -1, 0);
1057 break;
1058 case 'G':
1059 IIF (11, 2, 42,
4eb6b71c 1060 (unsigned long) argv[i], /* i always 3 here. */
252b5132
RH
1061 0, 0, 0, 0, 0,
1062 bit_fix_new (5, 0, 1, 32, -1, 0, -1), -1, 0);
1063 break;
1064 case 'i':
1065 iif.instr_size += 1;
4eb6b71c 1066 b = 2 + i; /* Put the extension byte after opcode. */
252b5132
RH
1067 IIF (b, 2, 1, 0, 0, 0, 0, 0, 0, 0, -1, 0);
1068 break;
1069 default:
1070 as_fatal (_("Bad opcode-table-option, check in file ns32k-opcode.h"));
1071 }
1072 }
1073}
1074\f
1075/* in: instruction line
1076 out: internal structure of instruction
1077 that has been prepared for direct conversion to fragment(s) and
1078 fixes in a systematical fashion
4eb6b71c 1079 Return-value = recursive_level. */
c6a7ab1f
NC
1080/* Build iif of one assembly text line. */
1081
4cd62c96
AM
1082static int parse PARAMS ((const char *, int));
1083
4eb6b71c 1084static int
252b5132 1085parse (line, recursive_level)
4cd62c96 1086 const char *line;
252b5132
RH
1087 int recursive_level;
1088{
4cd62c96
AM
1089 const char *lineptr;
1090 char c, suffix_separator;
4eb6b71c
NC
1091 int i;
1092 unsigned int argc;
1093 int arg_type;
252b5132 1094 char sqr, sep;
c6a7ab1f 1095 char suffix[MAX_ARGS], *argv[MAX_ARGS]; /* No more than 4 operands. */
0b7410c4 1096
252b5132 1097 if (recursive_level <= 0)
c6a7ab1f
NC
1098 {
1099 /* Called from md_assemble. */
1100 for (lineptr = line; (*lineptr) != '\0' && (*lineptr) != ' '; lineptr++)
1101 continue;
0b7410c4 1102
252b5132 1103 c = *lineptr;
4cd62c96 1104 *(char *) lineptr = '\0';
0b7410c4 1105
252b5132 1106 if (!(desc = (struct ns32k_opcode *) hash_find (inst_hash_handle, line)))
c6a7ab1f
NC
1107 as_fatal (_("No such opcode"));
1108
4cd62c96 1109 *(char *) lineptr = c;
252b5132
RH
1110 }
1111 else
1112 {
1113 lineptr = line;
1114 }
0b7410c4 1115
252b5132 1116 argc = 0;
0b7410c4 1117
252b5132
RH
1118 if (*desc->operands)
1119 {
1120 if (*lineptr++ != '\0')
1121 {
1122 sqr = '[';
1123 sep = ',';
0b7410c4 1124
252b5132
RH
1125 while (*lineptr != '\0')
1126 {
1127 if (desc->operands[argc << 1])
1128 {
1129 suffix[argc] = 0;
1130 arg_type = desc->operands[(argc << 1) + 1];
0b7410c4 1131
252b5132
RH
1132 switch (arg_type)
1133 {
1134 case 'd':
1135 case 'b':
1136 case 'p':
c6a7ab1f
NC
1137 case 'H':
1138 /* The operand is supposed to be a displacement. */
252b5132 1139 /* Hackwarning: do not forget to update the 4
c6a7ab1f 1140 cases above when editing ns32k-opcode.h. */
252b5132
RH
1141 suffix_separator = ':';
1142 break;
1143 default:
c6a7ab1f
NC
1144 /* If this char occurs we loose. */
1145 suffix_separator = '\255';
1146 break;
252b5132 1147 }
0b7410c4 1148
4eb6b71c 1149 suffix[argc] = 0; /* 0 when no ':' is encountered. */
252b5132
RH
1150 argv[argc] = freeptr;
1151 *freeptr = '\0';
0b7410c4 1152
252b5132
RH
1153 while ((c = *lineptr) != '\0' && c != sep)
1154 {
1155 if (c == sqr)
1156 {
1157 if (sqr == '[')
1158 {
1159 sqr = ']';
1160 sep = '\0';
1161 }
1162 else
1163 {
1164 sqr = '[';
1165 sep = ',';
1166 }
1167 }
0b7410c4 1168
252b5132 1169 if (c == suffix_separator)
c6a7ab1f
NC
1170 {
1171 /* ':' - label/suffix separator. */
252b5132
RH
1172 switch (lineptr[1])
1173 {
1174 case 'b':
1175 suffix[argc] = 1;
1176 break;
1177 case 'w':
1178 suffix[argc] = 2;
1179 break;
1180 case 'd':
1181 suffix[argc] = 4;
1182 break;
1183 default:
1184 as_warn (_("Bad suffix, defaulting to d"));
1185 suffix[argc] = 4;
1186 if (lineptr[1] == '\0' || lineptr[1] == sep)
1187 {
1188 lineptr += 1;
1189 continue;
1190 }
c6a7ab1f 1191 break;
252b5132 1192 }
0b7410c4 1193
252b5132
RH
1194 lineptr += 2;
1195 continue;
1196 }
0b7410c4 1197
252b5132
RH
1198 *freeptr++ = c;
1199 lineptr++;
1200 }
0b7410c4 1201
252b5132
RH
1202 *freeptr++ = '\0';
1203 argc += 1;
0b7410c4 1204
252b5132
RH
1205 if (*lineptr == '\0')
1206 continue;
0b7410c4 1207
252b5132
RH
1208 lineptr += 1;
1209 }
1210 else
1211 {
1212 as_fatal (_("Too many operands passed to instruction"));
1213 }
1214 }
1215 }
1216 }
0b7410c4 1217
252b5132
RH
1218 if (argc != strlen (desc->operands) / 2)
1219 {
1220 if (strlen (desc->default_args))
c6a7ab1f
NC
1221 {
1222 /* We can apply default, don't goof. */
252b5132 1223 if (parse (desc->default_args, 1) != 1)
c6a7ab1f
NC
1224 /* Check error in default. */
1225 as_fatal (_("Wrong numbers of operands in default, check ns32k-opcodes.h"));
252b5132
RH
1226 }
1227 else
1228 {
1229 as_fatal (_("Wrong number of operands"));
1230 }
252b5132 1231 }
0b7410c4 1232
252b5132 1233 for (i = 0; i < IIF_ENTRIES; i++)
c6a7ab1f
NC
1234 /* Mark all entries as void. */
1235 iif.iifP[i].type = 0;
252b5132 1236
c6a7ab1f 1237 /* Build opcode iif-entry. */
252b5132
RH
1238 iif.instr_size = desc->opcode_size / 8;
1239 IIF (1, 1, iif.instr_size, desc->opcode_seed, 0, 0, 0, 0, 0, 0, -1, 0);
1240
c6a7ab1f 1241 /* This call encodes operands to iif format. */
252b5132
RH
1242 if (argc)
1243 {
1244 encode_operand (argc,
1245 argv,
1246 &desc->operands[0],
1247 &suffix[0],
1248 desc->im_size,
1249 desc->opcode_size);
1250 }
1251 return recursive_level;
1252}
1253\f
252b5132 1254/* Convert iif to fragments. From this point we start to dribble with
c6a7ab1f
NC
1255 functions in other files than this one.(Except hash.c) So, if it's
1256 possible to make an iif for an other CPU, you don't need to know
1257 what frags, relax, obstacks, etc is in order to port this
1258 assembler. You only need to know if it's possible to reduce your
1259 cpu-instruction to iif-format (takes some work) and adopt the other
1260 md_? parts according to given instructions Note that iif was
67c1ffbe 1261 invented for the clean ns32k`s architecture. */
252b5132
RH
1262
1263/* GAS for the ns32k has a problem. PC relative displacements are
c6a7ab1f
NC
1264 relative to the address of the opcode, not the address of the
1265 operand. We used to keep track of the offset between the operand
1266 and the opcode in pcrel_adjust for each frag and each fix. However,
1267 we get into trouble where there are two or more pc-relative
1268 operands and the size of the first one can't be determined. Then in
1269 the relax phase, the size of the first operand will change and
1270 pcrel_adjust will no longer be correct. The current solution is
1271 keep a pointer to the frag with the opcode in it and the offset in
1272 that frag for each frag and each fix. Then, when needed, we can
1273 always figure out how far it is between the opcode and the pcrel
1274 object. See also md_pcrel_adjust and md_fix_pcrel_adjust. For
1275 objects not part of an instruction, the pointer to the opcode frag
1276 is always zero. */
252b5132 1277
4eb6b71c
NC
1278static void convert_iif PARAMS ((void));
1279static void
252b5132
RH
1280convert_iif ()
1281{
1282 int i;
1283 bit_fixS *j;
1284 fragS *inst_frag;
1285 unsigned int inst_offset;
1286 char *inst_opcode;
1287 char *memP;
1288 int l;
1289 int k;
1290 char type;
1291 char size = 0;
252b5132 1292
4eb6b71c 1293 frag_grow (iif.instr_size); /* This is important. */
252b5132
RH
1294 memP = frag_more (0);
1295 inst_opcode = memP;
1296 inst_offset = (memP - frag_now->fr_literal);
1297 inst_frag = frag_now;
1298
1299 for (i = 0; i < IIF_ENTRIES; i++)
1300 {
4eb6b71c 1301 if ((type = iif.iifP[i].type))
c6a7ab1f
NC
1302 {
1303 /* The object exist, so handle it. */
252b5132
RH
1304 switch (size = iif.iifP[i].size)
1305 {
1306 case 42:
c6a7ab1f
NC
1307 size = 0;
1308 /* It's a bitfix that operates on an existing object. */
252b5132 1309 if (iif.iifP[i].bit_fixP->fx_bit_base)
c6a7ab1f
NC
1310 /* Expand fx_bit_base to point at opcode. */
1311 iif.iifP[i].bit_fixP->fx_bit_base = (long) inst_opcode;
1312 /* Fall through. */
0b7410c4 1313
4eb6b71c 1314 case 8: /* bignum or doublefloat. */
252b5132
RH
1315 case 1:
1316 case 2:
1317 case 3:
c6a7ab1f
NC
1318 case 4:
1319 /* The final size in objectmemory is known. */
07726851 1320 memP = frag_more (size);
252b5132 1321 j = iif.iifP[i].bit_fixP;
0b7410c4 1322
252b5132
RH
1323 switch (type)
1324 {
c6a7ab1f 1325 case 1: /* The object is pure binary. */
4eb6b71c
NC
1326 if (j)
1327 {
1328 md_number_to_field(memP, exprP.X_add_number, j);
1329 }
1330 else if (iif.iifP[i].pcrel)
252b5132
RH
1331 {
1332 fix_new_ns32k (frag_now,
1333 (long) (memP - frag_now->fr_literal),
1334 size,
1335 0,
1336 iif.iifP[i].object,
1337 iif.iifP[i].pcrel,
1338 iif.iifP[i].im_disp,
4eb6b71c
NC
1339 0,
1340 iif.iifP[i].bsr, /* Sequent hack. */
252b5132
RH
1341 inst_frag, inst_offset);
1342 }
1343 else
c6a7ab1f
NC
1344 {
1345 /* Good, just put them bytes out. */
252b5132
RH
1346 switch (iif.iifP[i].im_disp)
1347 {
1348 case 0:
1349 md_number_to_chars (memP, iif.iifP[i].object, size);
1350 break;
1351 case 1:
1352 md_number_to_disp (memP, iif.iifP[i].object, size);
1353 break;
1354 default:
1355 as_fatal (_("iif convert internal pcrel/binary"));
1356 }
1357 }
1358 break;
0b7410c4 1359
252b5132 1360 case 2:
c6a7ab1f 1361 /* The object is a pointer at an expression, so
252b5132 1362 unpack it, note that bignums may result from the
c6a7ab1f 1363 expression. */
252b5132
RH
1364 evaluate_expr (&exprP, (char *) iif.iifP[i].object);
1365 if (exprP.X_op == O_big || size == 8)
1366 {
1367 if ((k = exprP.X_add_number) > 0)
1368 {
c6a7ab1f
NC
1369 /* We have a bignum ie a quad. This can only
1370 happens in a long suffixed instruction. */
252b5132 1371 if (k * 2 > size)
4eb6b71c 1372 as_bad (_("Bignum too big for long"));
0b7410c4 1373
252b5132
RH
1374 if (k == 3)
1375 memP += 2;
0b7410c4 1376
252b5132 1377 for (l = 0; k > 0; k--, l += 2)
4eb6b71c
NC
1378 md_number_to_chars (memP + l,
1379 generic_bignum[l >> 1],
1380 sizeof (LITTLENUM_TYPE));
252b5132
RH
1381 }
1382 else
c6a7ab1f
NC
1383 {
1384 /* flonum. */
252b5132
RH
1385 LITTLENUM_TYPE words[4];
1386
1387 switch (size)
1388 {
1389 case 4:
1390 gen_to_words (words, 2, 8);
1391 md_number_to_imm (memP, (long) words[0],
1392 sizeof (LITTLENUM_TYPE));
1393 md_number_to_imm (memP + sizeof (LITTLENUM_TYPE),
1394 (long) words[1],
1395 sizeof (LITTLENUM_TYPE));
1396 break;
1397 case 8:
1398 gen_to_words (words, 4, 11);
1399 md_number_to_imm (memP, (long) words[0],
1400 sizeof (LITTLENUM_TYPE));
1401 md_number_to_imm (memP + sizeof (LITTLENUM_TYPE),
1402 (long) words[1],
1403 sizeof (LITTLENUM_TYPE));
1404 md_number_to_imm ((memP + 2
1405 * sizeof (LITTLENUM_TYPE)),
1406 (long) words[2],
1407 sizeof (LITTLENUM_TYPE));
1408 md_number_to_imm ((memP + 3
1409 * sizeof (LITTLENUM_TYPE)),
1410 (long) words[3],
1411 sizeof (LITTLENUM_TYPE));
1412 break;
1413 }
1414 }
1415 break;
1416 }
4eb6b71c 1417 if (exprP.X_add_symbol ||
252b5132
RH
1418 exprP.X_op_symbol ||
1419 iif.iifP[i].pcrel)
1420 {
1421 /* The expression was undefined due to an
1422 undefined label. Create a fix so we can fix
c6a7ab1f 1423 the object later. */
252b5132
RH
1424 exprP.X_add_number += iif.iifP[i].object_adjust;
1425 fix_new_ns32k_exp (frag_now,
1426 (long) (memP - frag_now->fr_literal),
1427 size,
1428 &exprP,
1429 iif.iifP[i].pcrel,
1430 iif.iifP[i].im_disp,
1431 j,
1432 iif.iifP[i].bsr,
1433 inst_frag, inst_offset);
1434 }
4eb6b71c
NC
1435 else if (j)
1436 {
1437 md_number_to_field(memP, exprP.X_add_number, j);
1438 }
252b5132
RH
1439 else
1440 {
c6a7ab1f 1441 /* Good, just put them bytes out. */
252b5132
RH
1442 switch (iif.iifP[i].im_disp)
1443 {
1444 case 0:
1445 md_number_to_imm (memP, exprP.X_add_number, size);
1446 break;
1447 case 1:
1448 md_number_to_disp (memP, exprP.X_add_number, size);
1449 break;
1450 default:
1451 as_fatal (_("iif convert internal pcrel/pointer"));
1452 }
1453 }
1454 break;
1455 default:
1456 as_fatal (_("Internal logic error in iif.iifP[n].type"));
1457 }
1458 break;
0b7410c4 1459
252b5132 1460 case 0:
c6a7ab1f 1461 /* Too bad, the object may be undefined as far as its
252b5132
RH
1462 final nsize in object memory is concerned. The size
1463 of the object in objectmemory is not explicitly
1464 given. If the object is defined its length can be
c6a7ab1f 1465 determined and a fix can replace the frag. */
252b5132
RH
1466 {
1467 evaluate_expr (&exprP, (char *) iif.iifP[i].object);
0b7410c4 1468
252b5132
RH
1469 if ((exprP.X_add_symbol || exprP.X_op_symbol) &&
1470 !iif.iifP[i].pcrel)
1471 {
4eb6b71c
NC
1472 /* Size is unknown until link time so have to default. */
1473 size = default_disp_size; /* Normally 4 bytes. */
07726851 1474 memP = frag_more (size);
252b5132
RH
1475 fix_new_ns32k_exp (frag_now,
1476 (long) (memP - frag_now->fr_literal),
1477 size,
1478 &exprP,
1479 0, /* never iif.iifP[i].pcrel, */
1480 1, /* always iif.iifP[i].im_disp */
1481 (bit_fixS *) 0, 0,
1482 inst_frag,
1483 inst_offset);
4eb6b71c 1484 break; /* Exit this absolute hack. */
252b5132
RH
1485 }
1486
1487 if (exprP.X_add_symbol || exprP.X_op_symbol)
c6a7ab1f
NC
1488 {
1489 /* Frag it. */
252b5132 1490 if (exprP.X_op_symbol)
c6a7ab1f
NC
1491 {
1492 /* We cant relax this case. */
252b5132
RH
1493 as_fatal (_("Can't relax difference"));
1494 }
1495 else
1496 {
c6a7ab1f
NC
1497 /* Size is not important. This gets fixed by
1498 relax, but we assume 0 in what follows. */
07726851 1499 memP = frag_more (4); /* Max size. */
252b5132
RH
1500 size = 0;
1501
1502 {
1503 fragS *old_frag = frag_now;
1504 frag_variant (rs_machine_dependent,
c6a7ab1f
NC
1505 4, /* Max size. */
1506 0, /* Size. */
1507 IND (BRANCH, UNDEF), /* Expecting
1508 the worst. */
252b5132
RH
1509 exprP.X_add_symbol,
1510 exprP.X_add_number,
1511 inst_opcode);
c6a7ab1f
NC
1512 frag_opcode_frag (old_frag) = inst_frag;
1513 frag_opcode_offset (old_frag) = inst_offset;
1514 frag_bsr (old_frag) = iif.iifP[i].bsr;
252b5132
RH
1515 }
1516 }
1517 }
1518 else
1519 {
c6a7ab1f 1520 /* This duplicates code in md_number_to_disp. */
252b5132
RH
1521 if (-64 <= exprP.X_add_number && exprP.X_add_number <= 63)
1522 {
1523 size = 1;
1524 }
1525 else
1526 {
1527 if (-8192 <= exprP.X_add_number
1528 && exprP.X_add_number <= 8191)
1529 {
1530 size = 2;
1531 }
1532 else
1533 {
c6a7ab1f
NC
1534 if (-0x20000000 <= exprP.X_add_number
1535 && exprP.X_add_number<=0x1fffffff)
252b5132
RH
1536 {
1537 size = 4;
1538 }
1539 else
1540 {
4eb6b71c 1541 as_bad (_("Displacement to large for :d"));
252b5132
RH
1542 size = 4;
1543 }
1544 }
1545 }
0b7410c4 1546
c6a7ab1f 1547 memP = frag_more (size);
252b5132
RH
1548 md_number_to_disp (memP, exprP.X_add_number, size);
1549 }
1550 }
1551 break;
0b7410c4 1552
252b5132
RH
1553 default:
1554 as_fatal (_("Internal logic error in iif.iifP[].type"));
1555 }
1556 }
1557 }
1558}
1559\f
1560#ifdef BFD_ASSEMBLER
c6a7ab1f 1561/* This functionality should really be in the bfd library. */
252b5132
RH
1562static bfd_reloc_code_real_type
1563reloc (int size, int pcrel, int type)
1564{
1565 int length, index;
c6a7ab1f
NC
1566 bfd_reloc_code_real_type relocs[] =
1567 {
252b5132
RH
1568 BFD_RELOC_NS32K_IMM_8,
1569 BFD_RELOC_NS32K_IMM_16,
1570 BFD_RELOC_NS32K_IMM_32,
1571 BFD_RELOC_NS32K_IMM_8_PCREL,
1572 BFD_RELOC_NS32K_IMM_16_PCREL,
1573 BFD_RELOC_NS32K_IMM_32_PCREL,
1574
c6a7ab1f 1575 /* ns32k displacements. */
252b5132
RH
1576 BFD_RELOC_NS32K_DISP_8,
1577 BFD_RELOC_NS32K_DISP_16,
1578 BFD_RELOC_NS32K_DISP_32,
1579 BFD_RELOC_NS32K_DISP_8_PCREL,
1580 BFD_RELOC_NS32K_DISP_16_PCREL,
1581 BFD_RELOC_NS32K_DISP_32_PCREL,
1582
c6a7ab1f 1583 /* Normal 2's complement. */
252b5132
RH
1584 BFD_RELOC_8,
1585 BFD_RELOC_16,
1586 BFD_RELOC_32,
1587 BFD_RELOC_8_PCREL,
1588 BFD_RELOC_16_PCREL,
1589 BFD_RELOC_32_PCREL
c6a7ab1f 1590 };
0b7410c4 1591
252b5132
RH
1592 switch (size)
1593 {
1594 case 1:
1595 length = 0;
1596 break;
1597 case 2:
1598 length = 1;
1599 break;
1600 case 4:
1601 length = 2;
1602 break;
1603 default:
1604 length = -1;
1605 break;
1606 }
0b7410c4 1607
252b5132 1608 index = length + 3 * pcrel + 6 * type;
0b7410c4 1609
4eb6b71c 1610 if (index >= 0 && (unsigned int) index < sizeof (relocs) / sizeof (relocs[0]))
252b5132 1611 return relocs[index];
0b7410c4 1612
252b5132
RH
1613 if (pcrel)
1614 as_bad (_("Can not do %d byte pc-relative relocation for storage type %d"),
1615 size, type);
1616 else
1617 as_bad (_("Can not do %d byte relocation for storage type %d"),
1618 size, type);
0b7410c4 1619
252b5132
RH
1620 return BFD_RELOC_NONE;
1621
1622}
252b5132
RH
1623#endif
1624
1625void
1626md_assemble (line)
1627 char *line;
1628{
1629 freeptr = freeptr_static;
c6a7ab1f
NC
1630 parse (line, 0); /* Explode line to more fix form in iif. */
1631 convert_iif (); /* Convert iif to frags, fix's etc. */
252b5132
RH
1632#ifdef SHOW_NUM
1633 printf (" \t\t\t%s\n", line);
1634#endif
1635}
1636
252b5132
RH
1637void
1638md_begin ()
1639{
c6a7ab1f 1640 /* Build a hashtable of the instructions. */
252b5132
RH
1641 const struct ns32k_opcode *ptr;
1642 const char *stat;
4cd62c96 1643 const struct ns32k_opcode *endop;
c6a7ab1f 1644
b7599f01
JT
1645 inst_hash_handle = hash_new ();
1646
4cd62c96 1647 endop = ns32k_opcodes + sizeof (ns32k_opcodes) / sizeof (ns32k_opcodes[0]);
252b5132
RH
1648 for (ptr = ns32k_opcodes; ptr < endop; ptr++)
1649 {
1650 if ((stat = hash_insert (inst_hash_handle, ptr->name, (char *) ptr)))
c6a7ab1f
NC
1651 /* Fatal. */
1652 as_fatal (_("Can't hash %s: %s"), ptr->name, stat);
252b5132 1653 }
c6a7ab1f
NC
1654
1655 /* Some private space please! */
1656 freeptr_static = (char *) malloc (PRIVATE_SIZE);
252b5132
RH
1657}
1658
c6a7ab1f 1659/* Must be equal to MAX_PRECISON in atof-ieee.c. */
252b5132
RH
1660#define MAX_LITTLENUMS 6
1661
1662/* Turn the string pointed to by litP into a floating point constant
bc0d738a
NC
1663 of type TYPE, and emit the appropriate bytes. The number of
1664 LITTLENUMS emitted is stored in *SIZEP. An error message is
252b5132 1665 returned, or NULL on OK. */
bc0d738a 1666
252b5132
RH
1667char *
1668md_atof (type, litP, sizeP)
1669 char type;
1670 char *litP;
1671 int *sizeP;
1672{
1673 int prec;
1674 LITTLENUM_TYPE words[MAX_LITTLENUMS];
1675 LITTLENUM_TYPE *wordP;
1676 char *t;
1677
1678 switch (type)
1679 {
1680 case 'f':
1681 prec = 2;
1682 break;
1683
1684 case 'd':
1685 prec = 4;
1686 break;
1687 default:
1688 *sizeP = 0;
1689 return _("Bad call to MD_ATOF()");
1690 }
0b7410c4 1691
252b5132
RH
1692 t = atof_ieee (input_line_pointer, type, words);
1693 if (t)
1694 input_line_pointer = t;
1695
1696 *sizeP = prec * sizeof (LITTLENUM_TYPE);
0b7410c4 1697
252b5132
RH
1698 for (wordP = words + prec; prec--;)
1699 {
1700 md_number_to_chars (litP, (long) (*--wordP), sizeof (LITTLENUM_TYPE));
1701 litP += sizeof (LITTLENUM_TYPE);
1702 }
0b7410c4 1703
252b5132
RH
1704 return 0;
1705}
1706\f
c6a7ab1f 1707/* Convert number to chars in correct order. */
252b5132
RH
1708
1709void
1710md_number_to_chars (buf, value, nbytes)
1711 char *buf;
1712 valueT value;
1713 int nbytes;
1714{
1715 number_to_chars_littleendian (buf, value, nbytes);
1716}
1717
252b5132
RH
1718/* This is a variant of md_numbers_to_chars. The reason for its'
1719 existence is the fact that ns32k uses Huffman coded
1720 displacements. This implies that the bit order is reversed in
1721 displacements and that they are prefixed with a size-tag.
1722
1723 binary: msb -> lsb
1724 0xxxxxxx byte
1725 10xxxxxx xxxxxxxx word
1726 11xxxxxx xxxxxxxx xxxxxxxx xxxxxxxx double word
1727
1728 This must be taken care of and we do it here! */
c6a7ab1f 1729
252b5132
RH
1730static void
1731md_number_to_disp (buf, val, n)
1732 char *buf;
1733 long val;
1734 char n;
1735{
1736 switch (n)
1737 {
1738 case 1:
1739 if (val < -64 || val > 63)
4eb6b71c 1740 as_bad (_("value of %ld out of byte displacement range."), val);
252b5132
RH
1741 val &= 0x7f;
1742#ifdef SHOW_NUM
1743 printf ("%x ", val & 0xff);
1744#endif
1745 *buf++ = val;
1746 break;
1747 case 2:
1748 if (val < -8192 || val > 8191)
4eb6b71c 1749 as_bad (_("value of %ld out of word displacement range."), val);
252b5132
RH
1750 val &= 0x3fff;
1751 val |= 0x8000;
1752#ifdef SHOW_NUM
1753 printf ("%x ", val >> 8 & 0xff);
1754#endif
1755 *buf++ = (val >> 8);
1756#ifdef SHOW_NUM
1757 printf ("%x ", val & 0xff);
1758#endif
1759 *buf++ = val;
1760 break;
1761 case 4:
1762 if (val < -0x20000000 || val >= 0x20000000)
4eb6b71c 1763 as_bad (_("value of %ld out of double word displacement range."), val);
252b5132
RH
1764 val |= 0xc0000000;
1765#ifdef SHOW_NUM
1766 printf ("%x ", val >> 24 & 0xff);
1767#endif
1768 *buf++ = (val >> 24);
1769#ifdef SHOW_NUM
1770 printf ("%x ", val >> 16 & 0xff);
1771#endif
1772 *buf++ = (val >> 16);
1773#ifdef SHOW_NUM
1774 printf ("%x ", val >> 8 & 0xff);
1775#endif
1776 *buf++ = (val >> 8);
1777#ifdef SHOW_NUM
1778 printf ("%x ", val & 0xff);
1779#endif
1780 *buf++ = val;
1781 break;
1782 default:
4eb6b71c 1783 as_fatal (_("Internal logic error. line %d, file \"%s\""),
252b5132
RH
1784 __LINE__, __FILE__);
1785 }
1786}
1787
1788static void
1789md_number_to_imm (buf, val, n)
1790 char *buf;
1791 long val;
1792 char n;
1793{
1794 switch (n)
1795 {
1796 case 1:
1797#ifdef SHOW_NUM
1798 printf ("%x ", val & 0xff);
1799#endif
1800 *buf++ = val;
1801 break;
1802 case 2:
1803#ifdef SHOW_NUM
1804 printf ("%x ", val >> 8 & 0xff);
1805#endif
1806 *buf++ = (val >> 8);
1807#ifdef SHOW_NUM
1808 printf ("%x ", val & 0xff);
1809#endif
1810 *buf++ = val;
1811 break;
1812 case 4:
1813#ifdef SHOW_NUM
1814 printf ("%x ", val >> 24 & 0xff);
1815#endif
1816 *buf++ = (val >> 24);
1817#ifdef SHOW_NUM
1818 printf ("%x ", val >> 16 & 0xff);
1819#endif
1820 *buf++ = (val >> 16);
1821#ifdef SHOW_NUM
1822 printf ("%x ", val >> 8 & 0xff);
1823#endif
1824 *buf++ = (val >> 8);
1825#ifdef SHOW_NUM
1826 printf ("%x ", val & 0xff);
1827#endif
1828 *buf++ = val;
1829 break;
1830 default:
4eb6b71c 1831 as_fatal (_("Internal logic error. line %d, file \"%s\""),
252b5132
RH
1832 __LINE__, __FILE__);
1833 }
1834}
1835
c6a7ab1f
NC
1836/* Fast bitfiddling support. */
1837/* Mask used to zero bitfield before oring in the true field. */
252b5132
RH
1838
1839static unsigned long l_mask[] =
1840{
1841 0xffffffff, 0xfffffffe, 0xfffffffc, 0xfffffff8,
1842 0xfffffff0, 0xffffffe0, 0xffffffc0, 0xffffff80,
1843 0xffffff00, 0xfffffe00, 0xfffffc00, 0xfffff800,
1844 0xfffff000, 0xffffe000, 0xffffc000, 0xffff8000,
1845 0xffff0000, 0xfffe0000, 0xfffc0000, 0xfff80000,
1846 0xfff00000, 0xffe00000, 0xffc00000, 0xff800000,
1847 0xff000000, 0xfe000000, 0xfc000000, 0xf8000000,
1848 0xf0000000, 0xe0000000, 0xc0000000, 0x80000000,
1849};
1850static unsigned long r_mask[] =
1851{
1852 0x00000000, 0x00000001, 0x00000003, 0x00000007,
1853 0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
1854 0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
1855 0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff,
1856 0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff,
1857 0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff,
1858 0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff,
1859 0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff,
1860};
1861#define MASK_BITS 31
1862/* Insert bitfield described by field_ptr and val at buf
1863 This routine is written for modification of the first 4 bytes pointed
1864 to by buf, to yield speed.
1865 The ifdef stuff is for selection between a ns32k-dependent routine
c6a7ab1f 1866 and a general version. (My advice: use the general version!). */
252b5132
RH
1867
1868static void
1869md_number_to_field (buf, val, field_ptr)
4eb6b71c
NC
1870 char *buf;
1871 long val;
1872 bit_fixS *field_ptr;
252b5132 1873{
4eb6b71c
NC
1874 unsigned long object;
1875 unsigned long mask;
1876 /* Define ENDIAN on a ns32k machine. */
252b5132 1877#ifdef ENDIAN
4eb6b71c 1878 unsigned long *mem_ptr;
252b5132 1879#else
4eb6b71c 1880 char *mem_ptr;
252b5132 1881#endif
4eb6b71c 1882
252b5132
RH
1883 if (field_ptr->fx_bit_min <= val && val <= field_ptr->fx_bit_max)
1884 {
1885#ifdef ENDIAN
1886 if (field_ptr->fx_bit_base)
c6a7ab1f
NC
1887 /* Override buf. */
1888 mem_ptr = (unsigned long *) field_ptr->fx_bit_base;
252b5132 1889 else
c6a7ab1f 1890 mem_ptr = (unsigned long *) buf;
0b7410c4 1891
252b5132
RH
1892 mem_ptr = ((unsigned long *)
1893 ((char *) mem_ptr + field_ptr->fx_bit_base_adj));
1894#else
1895 if (field_ptr->fx_bit_base)
c6a7ab1f 1896 mem_ptr = (char *) field_ptr->fx_bit_base;
252b5132 1897 else
c6a7ab1f
NC
1898 mem_ptr = buf;
1899
252b5132
RH
1900 mem_ptr += field_ptr->fx_bit_base_adj;
1901#endif
c6a7ab1f
NC
1902#ifdef ENDIAN
1903 /* We have a nice ns32k machine with lowbyte at low-physical mem. */
252b5132 1904 object = *mem_ptr; /* get some bytes */
4eb6b71c 1905#else /* OVE Goof! the machine is a m68k or dito. */
c6a7ab1f 1906 /* That takes more byte fiddling. */
252b5132
RH
1907 object = 0;
1908 object |= mem_ptr[3] & 0xff;
1909 object <<= 8;
1910 object |= mem_ptr[2] & 0xff;
1911 object <<= 8;
1912 object |= mem_ptr[1] & 0xff;
1913 object <<= 8;
1914 object |= mem_ptr[0] & 0xff;
1915#endif
1916 mask = 0;
1917 mask |= (r_mask[field_ptr->fx_bit_offset]);
1918 mask |= (l_mask[field_ptr->fx_bit_offset + field_ptr->fx_bit_size]);
1919 object &= mask;
1920 val += field_ptr->fx_bit_add;
1921 object |= ((val << field_ptr->fx_bit_offset) & (mask ^ 0xffffffff));
1922#ifdef ENDIAN
1923 *mem_ptr = object;
1924#else
1925 mem_ptr[0] = (char) object;
1926 object >>= 8;
1927 mem_ptr[1] = (char) object;
1928 object >>= 8;
1929 mem_ptr[2] = (char) object;
1930 object >>= 8;
1931 mem_ptr[3] = (char) object;
1932#endif
1933 }
1934 else
1935 {
4eb6b71c 1936 as_bad (_("Bit field out of range"));
252b5132
RH
1937 }
1938}
1939
c6a7ab1f
NC
1940int
1941md_pcrel_adjust (fragP)
1942 fragS *fragP;
252b5132
RH
1943{
1944 fragS *opcode_frag;
1945 addressT opcode_address;
1946 unsigned int offset;
0b7410c4 1947
c6a7ab1f 1948 opcode_frag = frag_opcode_frag (fragP);
252b5132
RH
1949 if (opcode_frag == 0)
1950 return 0;
0b7410c4 1951
c6a7ab1f 1952 offset = frag_opcode_offset (fragP);
252b5132 1953 opcode_address = offset + opcode_frag->fr_address;
0b7410c4 1954
252b5132
RH
1955 return fragP->fr_address + fragP->fr_fix - opcode_address;
1956}
1957
4eb6b71c
NC
1958static int md_fix_pcrel_adjust PARAMS ((fixS *fixP));
1959static int
c6a7ab1f
NC
1960md_fix_pcrel_adjust (fixP)
1961 fixS *fixP;
252b5132 1962{
252b5132
RH
1963 fragS *opcode_frag;
1964 addressT opcode_address;
1965 unsigned int offset;
0b7410c4 1966
c6a7ab1f 1967 opcode_frag = fix_opcode_frag (fixP);
252b5132
RH
1968 if (opcode_frag == 0)
1969 return 0;
0b7410c4 1970
c6a7ab1f 1971 offset = fix_opcode_offset (fixP);
252b5132 1972 opcode_address = offset + opcode_frag->fr_address;
0b7410c4 1973
252b5132
RH
1974 return fixP->fx_where + fixP->fx_frag->fr_address - opcode_address;
1975}
1976
1977/* Apply a fixS (fixup of an instruction or data that we didn't have
1978 enough info to complete immediately) to the data in a frag.
1979
1980 On the ns32k, everything is in a different format, so we have broken
1981 out separate functions for each kind of thing we could be fixing.
1982 They all get called from here. */
1983
252b5132 1984void
94f592af 1985md_apply_fix3 (fixP, valP, seg)
252b5132 1986 fixS *fixP;
94f592af
NC
1987 valueT * valP;
1988 segT seg ATTRIBUTE_UNUSED;
252b5132 1989{
94f592af 1990 long val = * (long *) valP;
252b5132
RH
1991 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
1992
c6a7ab1f 1993 if (fix_bit_fixP (fixP))
4eb6b71c
NC
1994 {
1995 /* Bitfields to fix, sigh. */
1996 md_number_to_field (buf, val, fix_bit_fixP (fixP));
1997 }
94f592af
NC
1998 else switch (fix_im_disp (fixP))
1999 {
2000 case 0:
2001 /* Immediate field. */
2002 md_number_to_imm (buf, val, fixP->fx_size);
2003 break;
252b5132 2004
94f592af
NC
2005 case 1:
2006 /* Displacement field. */
4eb6b71c 2007 /* Calculate offset. */
94f592af
NC
2008 md_number_to_disp (buf,
2009 (fixP->fx_pcrel ? val + md_fix_pcrel_adjust (fixP)
2010 : val), fixP->fx_size);
2011 break;
2012
2013 case 2:
2014 /* Pointer in a data object. */
2015 md_number_to_chars (buf, val, fixP->fx_size);
2016 break;
2017 }
2018
2019 if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
2020 fixP->fx_done = 1;
252b5132
RH
2021}
2022\f
4eb6b71c 2023/* Convert a relaxed displacement to ditto in final output. */
252b5132
RH
2024
2025#ifndef BFD_ASSEMBLER
2026void
2027md_convert_frag (headers, sec, fragP)
2028 object_headers *headers;
2029 segT sec;
4eb6b71c 2030 fragS *fragP;
252b5132
RH
2031#else
2032void
2033md_convert_frag (abfd, sec, fragP)
4eb6b71c
NC
2034 bfd *abfd ATTRIBUTE_UNUSED;
2035 segT sec ATTRIBUTE_UNUSED;
2036 fragS *fragP;
252b5132
RH
2037#endif
2038{
2039 long disp;
2040 long ext = 0;
252b5132 2041 /* Address in gas core of the place to store the displacement. */
4eb6b71c 2042 char *buffer_address = fragP->fr_fix + fragP->fr_literal;
252b5132
RH
2043 /* Address in object code of the displacement. */
2044 int object_address;
2045
252b5132
RH
2046 switch (fragP->fr_subtype)
2047 {
2048 case IND (BRANCH, BYTE):
2049 ext = 1;
2050 break;
2051 case IND (BRANCH, WORD):
2052 ext = 2;
2053 break;
2054 case IND (BRANCH, DOUBLE):
2055 ext = 4;
2056 break;
2057 }
2058
c6a7ab1f 2059 if (ext == 0)
252b5132
RH
2060 return;
2061
2062 know (fragP->fr_symbol);
2063
2064 object_address = fragP->fr_fix + fragP->fr_address;
0b7410c4 2065
252b5132
RH
2066 /* The displacement of the address, from current location. */
2067 disp = (S_GET_VALUE (fragP->fr_symbol) + fragP->fr_offset) - object_address;
c6a7ab1f 2068 disp += md_pcrel_adjust (fragP);
252b5132
RH
2069
2070 md_number_to_disp (buffer_address, (long) disp, (int) ext);
2071 fragP->fr_fix += ext;
2072}
2073
2074/* This function returns the estimated size a variable object will occupy,
2075 one can say that we tries to guess the size of the objects before we
c6a7ab1f 2076 actually know it. */
252b5132
RH
2077
2078int
2079md_estimate_size_before_relax (fragP, segment)
4eb6b71c 2080 fragS *fragP;
252b5132
RH
2081 segT segment;
2082{
606ab118 2083 if (fragP->fr_subtype == IND (BRANCH, UNDEF))
252b5132 2084 {
606ab118 2085 if (S_GET_SEGMENT (fragP->fr_symbol) != segment)
252b5132 2086 {
606ab118 2087 /* We don't relax symbols defined in another segment. The
c6a7ab1f 2088 thing to do is to assume the object will occupy 4 bytes. */
252b5132
RH
2089 fix_new_ns32k (fragP,
2090 (int) (fragP->fr_fix),
2091 4,
2092 fragP->fr_symbol,
2093 fragP->fr_offset,
2094 1,
2095 1,
2096 0,
4eb6b71c 2097 frag_bsr(fragP), /* Sequent hack. */
c6a7ab1f
NC
2098 frag_opcode_frag (fragP),
2099 frag_opcode_offset (fragP));
252b5132 2100 fragP->fr_fix += 4;
c6a7ab1f
NC
2101#if 0
2102 fragP->fr_opcode[1] = 0xff;
2103#endif
252b5132 2104 frag_wane (fragP);
606ab118 2105 return 4;
252b5132 2106 }
93c2a809 2107
606ab118
AM
2108 /* Relaxable case. Set up the initial guess for the variable
2109 part of the frag. */
2110 fragP->fr_subtype = IND (BRANCH, BYTE);
252b5132 2111 }
0b7410c4 2112
606ab118
AM
2113 if (fragP->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0]))
2114 abort ();
2115
2116 /* Return the size of the variable part of the frag. */
2117 return md_relax_table[fragP->fr_subtype].rlx_length;
252b5132
RH
2118}
2119
2120int md_short_jump_size = 3;
2121int md_long_jump_size = 5;
c6a7ab1f 2122const int md_reloc_size = 8; /* Size of relocation record. */
252b5132
RH
2123
2124void
2125md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol)
2126 char *ptr;
2127 addressT from_addr, to_addr;
4eb6b71c
NC
2128 fragS *frag ATTRIBUTE_UNUSED;
2129 symbolS *to_symbol ATTRIBUTE_UNUSED;
252b5132
RH
2130{
2131 valueT offset;
2132
2133 offset = to_addr - from_addr;
2134 md_number_to_chars (ptr, (valueT) 0xEA, 1);
2135 md_number_to_disp (ptr + 1, (valueT) offset, 2);
2136}
2137
2138void
2139md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol)
2140 char *ptr;
2141 addressT from_addr, to_addr;
4eb6b71c
NC
2142 fragS *frag ATTRIBUTE_UNUSED;
2143 symbolS *to_symbol ATTRIBUTE_UNUSED;
252b5132
RH
2144{
2145 valueT offset;
2146
2147 offset = to_addr - from_addr;
2148 md_number_to_chars (ptr, (valueT) 0xEA, 1);
2149 md_number_to_disp (ptr + 1, (valueT) offset, 4);
2150}
2151\f
5a38dc70 2152const char *md_shortopts = "m:";
c6a7ab1f
NC
2153
2154struct option md_longopts[] =
2155{
4eb6b71c
NC
2156#define OPTION_DISP_SIZE (OPTION_MD_BASE)
2157 {"disp-size-default", required_argument , NULL, OPTION_DISP_SIZE},
252b5132
RH
2158 {NULL, no_argument, NULL, 0}
2159};
c6a7ab1f
NC
2160
2161size_t md_longopts_size = sizeof (md_longopts);
252b5132
RH
2162
2163int
2164md_parse_option (c, arg)
2165 int c;
2166 char *arg;
2167{
2168 switch (c)
2169 {
2170 case 'm':
2171 if (!strcmp (arg, "32032"))
2172 {
2173 cpureg = cpureg_032;
2174 mmureg = mmureg_032;
2175 }
2176 else if (!strcmp (arg, "32532"))
2177 {
2178 cpureg = cpureg_532;
2179 mmureg = mmureg_532;
2180 }
2181 else
2182 {
4eb6b71c 2183 as_warn (_("invalid architecture option -m%s, ignored"), arg);
252b5132
RH
2184 return 0;
2185 }
2186 break;
4eb6b71c
NC
2187 case OPTION_DISP_SIZE:
2188 {
2189 int size = atoi(arg);
2190 switch (size)
2191 {
2192 case 1: case 2: case 4:
2193 default_disp_size = size;
2194 break;
2195 default:
2196 as_warn (_("invalid default displacement size \"%s\". Defaulting to %d."),
2197 arg, default_disp_size);
2198 }
2199 break;
2200 }
252b5132
RH
2201
2202 default:
2203 return 0;
2204 }
2205
2206 return 1;
2207}
2208
2209void
2210md_show_usage (stream)
2211 FILE *stream;
2212{
c6a7ab1f 2213 fprintf (stream, _("\
252b5132 2214NS32K options:\n\
4eb6b71c
NC
2215-m32032 | -m32532 select variant of NS32K architecture\n\
2216--disp-size-default=<1|2|4>\n"));
252b5132 2217}
252b5132 2218\f
c6a7ab1f
NC
2219/* Create a bit_fixS in obstack 'notes'.
2220 This struct is used to profile the normal fix. If the bit_fixP is a
2221 valid pointer (not NULL) the bit_fix data will be used to format
2222 the fix. */
2223
252b5132
RH
2224bit_fixS *
2225bit_fix_new (size, offset, min, max, add, base_type, base_adj)
4eb6b71c
NC
2226 char size; /* Length of bitfield. */
2227 char offset; /* Bit offset to bitfield. */
2228 long min; /* Signextended min for bitfield. */
2229 long max; /* Signextended max for bitfield. */
2230 long add; /* Add mask, used for huffman prefix. */
2231 long base_type; /* 0 or 1, if 1 it's exploded to opcode ptr. */
252b5132
RH
2232 long base_adj;
2233{
4eb6b71c 2234 bit_fixS *bit_fixP;
252b5132
RH
2235
2236 bit_fixP = (bit_fixS *) obstack_alloc (&notes, sizeof (bit_fixS));
2237
2238 bit_fixP->fx_bit_size = size;
2239 bit_fixP->fx_bit_offset = offset;
2240 bit_fixP->fx_bit_base = base_type;
2241 bit_fixP->fx_bit_base_adj = base_adj;
2242 bit_fixP->fx_bit_max = max;
2243 bit_fixP->fx_bit_min = min;
2244 bit_fixP->fx_bit_add = add;
2245
4eb6b71c 2246 return bit_fixP;
252b5132
RH
2247}
2248
2249void
2250fix_new_ns32k (frag, where, size, add_symbol, offset, pcrel,
2251 im_disp, bit_fixP, bsr, opcode_frag, opcode_offset)
2252 fragS *frag; /* Which frag? */
2253 int where; /* Where in that frag? */
0b7410c4
KH
2254 int size; /* 1, 2 or 4 usually. */
2255 symbolS *add_symbol; /* X_add_symbol. */
2256 long offset; /* X_add_number. */
4eb6b71c
NC
2257 int pcrel; /* True if PC-relative relocation. */
2258 char im_disp; /* True if the value to write is a
2259 displacement. */
2260 bit_fixS *bit_fixP; /* Pointer at struct of bit_fix's, ignored if
2261 NULL. */
2262 char bsr; /* Sequent-linker-hack: 1 when relocobject is
2263 a bsr. */
252b5132
RH
2264 fragS *opcode_frag;
2265 unsigned int opcode_offset;
252b5132
RH
2266{
2267 fixS *fixP = fix_new (frag, where, size, add_symbol,
2268 offset, pcrel,
2269#ifdef BFD_ASSEMBLER
c6a7ab1f 2270 bit_fixP ? NO_RELOC : reloc (size, pcrel, im_disp)
252b5132
RH
2271#else
2272 NO_RELOC
2273#endif
2274 );
2275
c6a7ab1f
NC
2276 fix_opcode_frag (fixP) = opcode_frag;
2277 fix_opcode_offset (fixP) = opcode_offset;
2278 fix_im_disp (fixP) = im_disp;
2279 fix_bsr (fixP) = bsr;
2280 fix_bit_fixP (fixP) = bit_fixP;
4eb6b71c
NC
2281 /* We have a MD overflow check for displacements. */
2282 fixP->fx_no_overflow = (im_disp != 0);
c6a7ab1f 2283}
252b5132
RH
2284
2285void
2286fix_new_ns32k_exp (frag, where, size, exp, pcrel,
2287 im_disp, bit_fixP, bsr, opcode_frag, opcode_offset)
2288 fragS *frag; /* Which frag? */
2289 int where; /* Where in that frag? */
0b7410c4
KH
2290 int size; /* 1, 2 or 4 usually. */
2291 expressionS *exp; /* Expression. */
4eb6b71c
NC
2292 int pcrel; /* True if PC-relative relocation. */
2293 char im_disp; /* True if the value to write is a
2294 displacement. */
2295 bit_fixS *bit_fixP; /* Pointer at struct of bit_fix's, ignored if
2296 NULL. */
2297 char bsr; /* Sequent-linker-hack: 1 when relocobject is
2298 a bsr. */
252b5132
RH
2299 fragS *opcode_frag;
2300 unsigned int opcode_offset;
2301{
2302 fixS *fixP = fix_new_exp (frag, where, size, exp, pcrel,
2303#ifdef BFD_ASSEMBLER
c6a7ab1f 2304 bit_fixP ? NO_RELOC : reloc (size, pcrel, im_disp)
252b5132
RH
2305#else
2306 NO_RELOC
2307#endif
2308 );
2309
c6a7ab1f
NC
2310 fix_opcode_frag (fixP) = opcode_frag;
2311 fix_opcode_offset (fixP) = opcode_offset;
2312 fix_im_disp (fixP) = im_disp;
2313 fix_bsr (fixP) = bsr;
2314 fix_bit_fixP (fixP) = bit_fixP;
4eb6b71c
NC
2315 /* We have a MD overflow check for displacements. */
2316 fixP->fx_no_overflow = (im_disp != 0);
c6a7ab1f 2317}
252b5132
RH
2318
2319/* This is TC_CONS_FIX_NEW, called by emit_expr in read.c. */
2320
2321void
2322cons_fix_new_ns32k (frag, where, size, exp)
2323 fragS *frag; /* Which frag? */
2324 int where; /* Where in that frag? */
0b7410c4
KH
2325 int size; /* 1, 2 or 4 usually. */
2326 expressionS *exp; /* Expression. */
252b5132
RH
2327{
2328 fix_new_ns32k_exp (frag, where, size, exp,
2329 0, 2, 0, 0, 0, 0);
2330}
2331
2332/* We have no need to default values of symbols. */
2333
2334symbolS *
2335md_undefined_symbol (name)
4eb6b71c 2336 char *name ATTRIBUTE_UNUSED;
252b5132
RH
2337{
2338 return 0;
2339}
2340
2341/* Round up a section size to the appropriate boundary. */
c6a7ab1f 2342
252b5132
RH
2343valueT
2344md_section_align (segment, size)
4eb6b71c 2345 segT segment ATTRIBUTE_UNUSED;
252b5132
RH
2346 valueT size;
2347{
c6a7ab1f 2348 return size; /* Byte alignment is fine. */
252b5132
RH
2349}
2350
2351/* Exactly what point is a PC-relative offset relative TO? On the
c6a7ab1f
NC
2352 ns32k, they're relative to the start of the instruction. */
2353
252b5132
RH
2354long
2355md_pcrel_from (fixP)
2356 fixS *fixP;
2357{
2358 long res;
4eb6b71c 2359
252b5132
RH
2360 res = fixP->fx_where + fixP->fx_frag->fr_address;
2361#ifdef SEQUENT_COMPATABILITY
c6a7ab1f
NC
2362 if (frag_bsr (fixP->fx_frag))
2363 res += 0x12 /* FOO Kludge alert! */
252b5132
RH
2364#endif
2365 return res;
2366}
2367
2368#ifdef BFD_ASSEMBLER
2369
2370arelent *
2371tc_gen_reloc (section, fixp)
4eb6b71c 2372 asection *section ATTRIBUTE_UNUSED;
252b5132
RH
2373 fixS *fixp;
2374{
2375 arelent *rel;
2376 bfd_reloc_code_real_type code;
2377
c6a7ab1f 2378 code = reloc (fixp->fx_size, fixp->fx_pcrel, fix_im_disp (fixp));
252b5132
RH
2379
2380 rel = (arelent *) xmalloc (sizeof (arelent));
310b5aa2
ILT
2381 rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2382 *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH
2383 rel->address = fixp->fx_frag->fr_address + fixp->fx_where;
2384 if (fixp->fx_pcrel)
2385 rel->addend = fixp->fx_addnumber;
2386 else
2387 rel->addend = 0;
2388
2389 rel->howto = bfd_reloc_type_lookup (stdoutput, code);
2390 if (!rel->howto)
2391 {
2392 const char *name;
2393
2394 name = S_GET_NAME (fixp->fx_addsy);
2395 if (name == NULL)
2396 name = _("<unknown>");
2397 as_fatal (_("Cannot find relocation type for symbol %s, code %d"),
2398 name, (int) code);
2399 }
2400
2401 return rel;
2402}
2403#else /* BFD_ASSEMBLER */
2404
2405#ifdef OBJ_AOUT
2406void
2407cons_fix_new_ns32k (where, fixP, segment_address_in_file)
2408 char *where;
2409 struct fix *fixP;
2410 relax_addressT segment_address_in_file;
2411{
c6a7ab1f
NC
2412 /* In: Length of relocation (or of address) in chars: 1, 2 or 4.
2413 Out: GNU LD relocation length code: 0, 1, or 2. */
252b5132 2414
c6a7ab1f 2415 static unsigned char nbytes_r_length[] = { 42, 0, 1, 42, 2 };
252b5132
RH
2416 long r_symbolnum;
2417
2418 know (fixP->fx_addsy != NULL);
2419
2420 md_number_to_chars (where,
2421 fixP->fx_frag->fr_address + fixP->fx_where - segment_address_in_file,
2422 4);
2423
2424 r_symbolnum = (S_IS_DEFINED (fixP->fx_addsy)
2425 ? S_GET_TYPE (fixP->fx_addsy)
2426 : fixP->fx_addsy->sy_number);
2427
2428 md_number_to_chars (where + 4,
2429 ((long) (r_symbolnum)
2430 | (long) (fixP->fx_pcrel << 24)
2431 | (long) (nbytes_r_length[fixP->fx_size] << 25)
2432 | (long) ((!S_IS_DEFINED (fixP->fx_addsy)) << 27)
c6a7ab1f
NC
2433 | (long) (fix_bsr (fixP) << 28)
2434 | (long) (fix_im_disp (fixP) << 29)),
252b5132
RH
2435 4);
2436}
2437
2438#endif /* OBJ_AOUT */
67c1ffbe 2439#endif /* BFD_ASSEMBLER */
This page took 0.356539 seconds and 4 git commands to generate.