Commit | Line | Data |
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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 | ||
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 | |
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 | }; |
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 | |
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 | |
131 | struct 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 |
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 | |
4eb6b71c NC |
370 | static void evaluate_expr PARAMS ((expressionS * resultP, char *)); |
371 | static void md_number_to_disp PARAMS ((char *, long, int)); | |
372 | static void md_number_to_imm PARAMS ((char *, long, int)); | |
373 | static 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 |
383 | static int addr_mode PARAMS ((char *, addr_modeS *, int)); |
384 | ||
385 | static int | |
252b5132 RH |
386 | addr_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 |
666 | static int get_addr_mode PARAMS ((char *, addr_modeS *)); |
667 | static int | |
252b5132 RH |
668 | get_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 |
804 | static void optlist PARAMS ((char *, struct ns32k_option *, unsigned long *)); |
805 | static void | |
252b5132 | 806 | optlist (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 |
848 | static int list_search PARAMS ((char *, struct ns32k_option *, unsigned long *)); |
849 | ||
850 | static int | |
252b5132 | 851 | list_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 | ||
874 | static void | |
875 | evaluate_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 |
893 | static void encode_operand |
894 | PARAMS ((int, char **, const char *, const char *, char, char)); | |
895 | ||
4eb6b71c | 896 | static void |
252b5132 RH |
897 | encode_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 |
1082 | static int parse PARAMS ((const char *, int)); |
1083 | ||
4eb6b71c | 1084 | static int |
252b5132 | 1085 | parse (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 |
1278 | static void convert_iif PARAMS ((void)); |
1279 | static void | |
252b5132 RH |
1280 | convert_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 |
1562 | static bfd_reloc_code_real_type |
1563 | reloc (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 | ||
1625 | void | |
1626 | md_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 |
1637 | void |
1638 | md_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 |
1667 | char * |
1668 | md_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 | |
1709 | void | |
1710 | md_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 |
1730 | static void |
1731 | md_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 | ||
1788 | static void | |
1789 | md_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 | |
1839 | static 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 | }; | |
1850 | static 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 | |
1868 | static void | |
1869 | md_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 |
1940 | int |
1941 | md_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 |
1958 | static int md_fix_pcrel_adjust PARAMS ((fixS *fixP)); |
1959 | static int | |
c6a7ab1f NC |
1960 | md_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 | 1984 | void |
94f592af | 1985 | md_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 | |
2026 | void | |
2027 | md_convert_frag (headers, sec, fragP) | |
2028 | object_headers *headers; | |
2029 | segT sec; | |
4eb6b71c | 2030 | fragS *fragP; |
252b5132 RH |
2031 | #else |
2032 | void | |
2033 | md_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 | |
2078 | int | |
2079 | md_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 | ||
2120 | int md_short_jump_size = 3; | |
2121 | int md_long_jump_size = 5; | |
c6a7ab1f | 2122 | const int md_reloc_size = 8; /* Size of relocation record. */ |
252b5132 RH |
2123 | |
2124 | void | |
2125 | md_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 | ||
2138 | void | |
2139 | md_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 | 2152 | const char *md_shortopts = "m:"; |
c6a7ab1f NC |
2153 | |
2154 | struct 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 | |
2161 | size_t md_longopts_size = sizeof (md_longopts); | |
252b5132 RH |
2162 | |
2163 | int | |
2164 | md_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 | ||
2209 | void | |
2210 | md_show_usage (stream) | |
2211 | FILE *stream; | |
2212 | { | |
c6a7ab1f | 2213 | fprintf (stream, _("\ |
252b5132 | 2214 | NS32K 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 |
2224 | bit_fixS * |
2225 | bit_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 (¬es, 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 | ||
2249 | void | |
2250 | fix_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 | |
2285 | void | |
2286 | fix_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 | ||
2321 | void | |
2322 | cons_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 | ||
2334 | symbolS * | |
2335 | md_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 |
2343 | valueT |
2344 | md_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 |
2354 | long |
2355 | md_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 | ||
2370 | arelent * | |
2371 | tc_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 | |
2406 | void | |
2407 | cons_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 */ |