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be33c5dd | 1 | /* tc-tic4x.c -- Assemble for the Texas Instruments TMS320C[34]x. |
4b95cf5c | 2 | Copyright (C) 1997-2014 Free Software Foundation, Inc. |
026df7c5 NC |
3 | |
4 | Contributed by Michael P. Hayes (m.hayes@elec.canterbury.ac.nz) | |
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 | |
ec2655a6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
026df7c5 NC |
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 | |
4b4da160 NC |
20 | the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
247b1fe6 SS |
22 | /* |
23 | TODOs: | |
24 | ------ | |
25 | ||
44287f60 SS |
26 | o .align cannot handle fill-data-width larger than 0xFF/8-bits. It |
27 | should be possible to define a 32-bits pattern. | |
026df7c5 | 28 | |
33b7f697 | 29 | o .align: Implement a 'bu' insn if the number of nop's exceeds 4 |
44287f60 SS |
30 | within the align frag. if(fragsize>4words) insert bu fragend+1 |
31 | first. | |
026df7c5 | 32 | |
247b1fe6 | 33 | o .usect if has symbol on previous line not implemented |
026df7c5 | 34 | |
247b1fe6 | 35 | o .sym, .eos, .stag, .etag, .member not implemented |
026df7c5 | 36 | |
44287f60 SS |
37 | o Evaluation of constant floating point expressions (expr.c needs |
38 | work!) | |
026df7c5 | 39 | |
df7b86aa | 40 | o Support 'abc' constants (that is 0x616263). */ |
026df7c5 | 41 | |
026df7c5 | 42 | #include "as.h" |
df7b86aa | 43 | #include "safe-ctype.h" |
026df7c5 NC |
44 | #include "opcode/tic4x.h" |
45 | #include "subsegs.h" | |
46 | #include "obstack.h" | |
026df7c5 NC |
47 | |
48 | /* OK, we accept a syntax similar to the other well known C30 | |
be33c5dd | 49 | assembly tools. With TIC4X_ALT_SYNTAX defined we are more |
026df7c5 NC |
50 | flexible, allowing a more Unix-like syntax: `%' in front of |
51 | register names, `#' in front of immediate constants, and | |
52 | not requiring `@' in front of direct addresses. */ | |
53 | ||
be33c5dd | 54 | #define TIC4X_ALT_SYNTAX |
026df7c5 NC |
55 | |
56 | /* Equal to MAX_PRECISION in atof-ieee.c. */ | |
57 | #define MAX_LITTLENUMS 6 /* (12 bytes) */ | |
58 | ||
59 | /* Handle of the inst mnemonic hash table. */ | |
be33c5dd | 60 | static struct hash_control *tic4x_op_hash = NULL; |
026df7c5 NC |
61 | |
62 | /* Handle asg pseudo. */ | |
be33c5dd | 63 | static struct hash_control *tic4x_asg_hash = NULL; |
026df7c5 | 64 | |
be33c5dd SS |
65 | static unsigned int tic4x_cpu = 0; /* Default to TMS320C40. */ |
66 | static unsigned int tic4x_revision = 0; /* CPU revision */ | |
67 | static unsigned int tic4x_idle2 = 0; /* Idle2 support */ | |
68 | static unsigned int tic4x_lowpower = 0; /* Lowpower support */ | |
69 | static unsigned int tic4x_enhanced = 0; /* Enhanced opcode support */ | |
70 | static unsigned int tic4x_big_model = 0; /* Default to small memory model. */ | |
71 | static unsigned int tic4x_reg_args = 0; /* Default to args passed on stack. */ | |
72 | static unsigned long tic4x_oplevel = 0; /* Opcode level */ | |
9c87d6c7 SS |
73 | |
74 | #define OPTION_CPU 'm' | |
75 | #define OPTION_BIG (OPTION_MD_BASE + 1) | |
76 | #define OPTION_SMALL (OPTION_MD_BASE + 2) | |
77 | #define OPTION_MEMPARM (OPTION_MD_BASE + 3) | |
78 | #define OPTION_REGPARM (OPTION_MD_BASE + 4) | |
79 | #define OPTION_IDLE2 (OPTION_MD_BASE + 5) | |
80 | #define OPTION_LOWPOWER (OPTION_MD_BASE + 6) | |
81 | #define OPTION_ENHANCED (OPTION_MD_BASE + 7) | |
82 | #define OPTION_REV (OPTION_MD_BASE + 8) | |
83 | ||
cda796e1 | 84 | const char *md_shortopts = "bm:prs"; |
9c87d6c7 SS |
85 | struct option md_longopts[] = |
86 | { | |
87 | { "mcpu", required_argument, NULL, OPTION_CPU }, | |
88 | { "mdsp", required_argument, NULL, OPTION_CPU }, | |
89 | { "mbig", no_argument, NULL, OPTION_BIG }, | |
90 | { "msmall", no_argument, NULL, OPTION_SMALL }, | |
91 | { "mmemparm", no_argument, NULL, OPTION_MEMPARM }, | |
92 | { "mregparm", no_argument, NULL, OPTION_REGPARM }, | |
93 | { "midle2", no_argument, NULL, OPTION_IDLE2 }, | |
94 | { "mlowpower", no_argument, NULL, OPTION_LOWPOWER }, | |
95 | { "menhanced", no_argument, NULL, OPTION_ENHANCED }, | |
96 | { "mrev", required_argument, NULL, OPTION_REV }, | |
97 | { NULL, no_argument, NULL, 0 } | |
98 | }; | |
99 | ||
100 | size_t md_longopts_size = sizeof (md_longopts); | |
101 | ||
026df7c5 NC |
102 | |
103 | typedef enum | |
104 | { | |
105 | M_UNKNOWN, M_IMMED, M_DIRECT, M_REGISTER, M_INDIRECT, | |
106 | M_IMMED_F, M_PARALLEL, M_HI | |
107 | } | |
be33c5dd | 108 | tic4x_addr_mode_t; |
026df7c5 | 109 | |
be33c5dd | 110 | typedef struct tic4x_operand |
026df7c5 | 111 | { |
be33c5dd | 112 | tic4x_addr_mode_t mode; /* Addressing mode. */ |
026df7c5 NC |
113 | expressionS expr; /* Expression. */ |
114 | int disp; /* Displacement for indirect addressing. */ | |
115 | int aregno; /* Aux. register number. */ | |
116 | LITTLENUM_TYPE fwords[MAX_LITTLENUMS]; /* Float immed. number. */ | |
117 | } | |
be33c5dd | 118 | tic4x_operand_t; |
026df7c5 | 119 | |
be33c5dd | 120 | typedef struct tic4x_insn |
026df7c5 | 121 | { |
be33c5dd | 122 | char name[TIC4X_NAME_MAX]; /* Mnemonic of instruction. */ |
026df7c5 NC |
123 | unsigned int in_use; /* True if in_use. */ |
124 | unsigned int parallel; /* True if parallel instruction. */ | |
125 | unsigned int nchars; /* This is always 4 for the C30. */ | |
126 | unsigned long opcode; /* Opcode number. */ | |
127 | expressionS exp; /* Expression required for relocation. */ | |
128 | int reloc; /* Relocation type required. */ | |
129 | int pcrel; /* True if relocation PC relative. */ | |
130 | char *pname; /* Name of instruction in parallel. */ | |
131 | unsigned int num_operands; /* Number of operands in total. */ | |
be33c5dd SS |
132 | tic4x_inst_t *inst; /* Pointer to first template. */ |
133 | tic4x_operand_t operands[TIC4X_OPERANDS_MAX]; | |
026df7c5 | 134 | } |
be33c5dd | 135 | tic4x_insn_t; |
026df7c5 | 136 | |
be33c5dd SS |
137 | static tic4x_insn_t the_insn; /* Info about our instruction. */ |
138 | static tic4x_insn_t *insn = &the_insn; | |
026df7c5 | 139 | |
5a49b8ac AM |
140 | static void tic4x_asg (int); |
141 | static void tic4x_bss (int); | |
142 | static void tic4x_globl (int); | |
143 | static void tic4x_cons (int); | |
144 | static void tic4x_stringer (int); | |
145 | static void tic4x_eval (int); | |
146 | static void tic4x_newblock (int); | |
147 | static void tic4x_sect (int); | |
148 | static void tic4x_set (int); | |
149 | static void tic4x_usect (int); | |
150 | static void tic4x_version (int); | |
75d12d11 | 151 | |
026df7c5 NC |
152 | |
153 | const pseudo_typeS | |
154 | md_pseudo_table[] = | |
155 | { | |
156 | {"align", s_align_bytes, 32}, | |
be33c5dd SS |
157 | {"ascii", tic4x_stringer, 1}, |
158 | {"asciz", tic4x_stringer, 0}, | |
159 | {"asg", tic4x_asg, 0}, | |
247b1fe6 | 160 | {"block", s_space, 4}, |
be33c5dd SS |
161 | {"byte", tic4x_cons, 1}, |
162 | {"bss", tic4x_bss, 0}, | |
247b1fe6 | 163 | {"copy", s_include, 0}, |
be33c5dd SS |
164 | {"def", tic4x_globl, 0}, |
165 | {"equ", tic4x_set, 0}, | |
166 | {"eval", tic4x_eval, 0}, | |
167 | {"global", tic4x_globl, 0}, | |
168 | {"globl", tic4x_globl, 0}, | |
169 | {"hword", tic4x_cons, 2}, | |
026df7c5 | 170 | {"ieee", float_cons, 'i'}, |
be33c5dd | 171 | {"int", tic4x_cons, 4}, /* .int allocates 4 bytes. */ |
247b1fe6 | 172 | {"ldouble", float_cons, 'e'}, |
be33c5dd | 173 | {"newblock", tic4x_newblock, 0}, |
247b1fe6 | 174 | {"ref", s_ignore, 0}, /* All undefined treated as external. */ |
be33c5dd SS |
175 | {"set", tic4x_set, 0}, |
176 | {"sect", tic4x_sect, 1}, /* Define named section. */ | |
026df7c5 | 177 | {"space", s_space, 4}, |
be33c5dd SS |
178 | {"string", tic4x_stringer, 0}, |
179 | {"usect", tic4x_usect, 0}, /* Reserve space in uninit. named sect. */ | |
180 | {"version", tic4x_version, 0}, | |
181 | {"word", tic4x_cons, 4}, /* .word allocates 4 bytes. */ | |
182 | {"xdef", tic4x_globl, 0}, | |
026df7c5 NC |
183 | {NULL, 0, 0}, |
184 | }; | |
185 | ||
186 | int md_short_jump_size = 4; | |
187 | int md_long_jump_size = 4; | |
026df7c5 NC |
188 | |
189 | /* This array holds the chars that always start a comment. If the | |
190 | pre-processor is disabled, these aren't very useful. */ | |
be33c5dd | 191 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 NC |
192 | const char comment_chars[] = ";!"; |
193 | #else | |
194 | const char comment_chars[] = ";"; | |
195 | #endif | |
196 | ||
197 | /* This array holds the chars that only start a comment at the beginning of | |
198 | a line. If the line seems to have the form '# 123 filename' | |
199 | .line and .file directives will appear in the pre-processed output. | |
200 | Note that input_file.c hand checks for '#' at the beginning of the | |
201 | first line of the input file. This is because the compiler outputs | |
202 | #NO_APP at the beginning of its output. | |
203 | Also note that comments like this one will always work. */ | |
204 | const char line_comment_chars[] = "#*"; | |
205 | ||
206 | /* We needed an unused char for line separation to work around the | |
207 | lack of macros, using sed and such. */ | |
208 | const char line_separator_chars[] = "&"; | |
209 | ||
210 | /* Chars that can be used to separate mant from exp in floating point nums. */ | |
211 | const char EXP_CHARS[] = "eE"; | |
212 | ||
213 | /* Chars that mean this number is a floating point constant. */ | |
214 | /* As in 0f12.456 */ | |
215 | /* or 0d1.2345e12 */ | |
216 | const char FLT_CHARS[] = "fFilsS"; | |
217 | ||
218 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
219 | changed in read.c. Ideally it shouldn't have to know about it at | |
220 | all, but nothing is ideal around here. */ | |
221 | ||
222 | /* Flonums returned here. */ | |
223 | extern FLONUM_TYPE generic_floating_point_number; | |
224 | ||
225 | /* Precision in LittleNums. */ | |
247b1fe6 | 226 | #define MAX_PRECISION (4) /* Its a bit overkill for us, but the code |
33b7f697 | 227 | requires it... */ |
026df7c5 NC |
228 | #define S_PRECISION (1) /* Short float constants 16-bit. */ |
229 | #define F_PRECISION (2) /* Float and double types 32-bit. */ | |
247b1fe6 | 230 | #define E_PRECISION (4) /* Extended precision, 64-bit (real 40-bit). */ |
026df7c5 NC |
231 | #define GUARD (2) |
232 | ||
233 | /* Turn generic_floating_point_number into a real short/float/double. */ | |
247b1fe6 | 234 | static int |
5a49b8ac | 235 | tic4x_gen_to_words (FLONUM_TYPE flonum, LITTLENUM_TYPE *words, int precision) |
026df7c5 NC |
236 | { |
237 | int return_value = 0; | |
238 | LITTLENUM_TYPE *p; /* Littlenum pointer. */ | |
239 | int mantissa_bits; /* Bits in mantissa field. */ | |
240 | int exponent_bits; /* Bits in exponent field. */ | |
241 | int exponent; | |
242 | unsigned int sone; /* Scaled one. */ | |
243 | unsigned int sfract; /* Scaled fraction. */ | |
244 | unsigned int smant; /* Scaled mantissa. */ | |
245 | unsigned int tmp; | |
247b1fe6 SS |
246 | unsigned int mover; /* Mantissa overflow bits */ |
247 | unsigned int rbit; /* Round bit. */ | |
026df7c5 NC |
248 | int shift; /* Shift count. */ |
249 | ||
e5f129ad | 250 | /* NOTE: Svein Seldal <Svein@dev.seldal.com> |
247b1fe6 SS |
251 | The code in this function is altered slightly to support floats |
252 | with 31-bits mantissas, thus the documentation below may be a | |
253 | little bit inaccurate. | |
254 | ||
255 | By Michael P. Hayes <m.hayes@elec.canterbury.ac.nz> | |
256 | Here is how a generic floating point number is stored using | |
026df7c5 NC |
257 | flonums (an extension of bignums) where p is a pointer to an |
258 | array of LITTLENUMs. | |
259 | ||
260 | For example 2e-3 is stored with exp = -4 and | |
261 | bits[0] = 0x0000 | |
262 | bits[1] = 0x0000 | |
263 | bits[2] = 0x4fde | |
264 | bits[3] = 0x978d | |
265 | bits[4] = 0x126e | |
266 | bits[5] = 0x0083 | |
267 | with low = &bits[2], high = &bits[5], and leader = &bits[5]. | |
268 | ||
269 | This number can be written as | |
270 | 0x0083126e978d4fde.00000000 * 65536**-4 or | |
271 | 0x0.0083126e978d4fde * 65536**0 or | |
272 | 0x0.83126e978d4fde * 2**-8 = 2e-3 | |
273 | ||
274 | Note that low points to the 65536**0 littlenum (bits[2]) and | |
275 | leader points to the most significant non-zero littlenum | |
276 | (bits[5]). | |
277 | ||
278 | TMS320C3X floating point numbers are a bit of a strange beast. | |
279 | The 32-bit flavour has the 8 MSBs representing the exponent in | |
280 | twos complement format (-128 to +127). There is then a sign bit | |
281 | followed by 23 bits of mantissa. The mantissa is expressed in | |
282 | twos complement format with the binary point after the most | |
283 | significant non sign bit. The bit after the binary point is | |
284 | suppressed since it is the complement of the sign bit. The | |
285 | effective mantissa is thus 24 bits. Zero is represented by an | |
286 | exponent of -128. | |
287 | ||
288 | The 16-bit flavour has the 4 MSBs representing the exponent in | |
289 | twos complement format (-8 to +7). There is then a sign bit | |
290 | followed by 11 bits of mantissa. The mantissa is expressed in | |
291 | twos complement format with the binary point after the most | |
292 | significant non sign bit. The bit after the binary point is | |
293 | suppressed since it is the complement of the sign bit. The | |
294 | effective mantissa is thus 12 bits. Zero is represented by an | |
295 | exponent of -8. For example, | |
296 | ||
297 | number norm mant m x e s i fraction f | |
298 | +0.500 => 1.00000000000 -1 -1 0 1 .00000000000 (1 + 0) * 2^(-1) | |
299 | +0.999 => 1.11111111111 -1 -1 0 1 .11111111111 (1 + 0.99) * 2^(-1) | |
300 | +1.000 => 1.00000000000 0 0 0 1 .00000000000 (1 + 0) * 2^(0) | |
301 | +1.500 => 1.10000000000 0 0 0 1 .10000000000 (1 + 0.5) * 2^(0) | |
302 | +1.999 => 1.11111111111 0 0 0 1 .11111111111 (1 + 0.9) * 2^(0) | |
303 | +2.000 => 1.00000000000 1 1 0 1 .00000000000 (1 + 0) * 2^(1) | |
304 | +4.000 => 1.00000000000 2 2 0 1 .00000000000 (1 + 0) * 2^(2) | |
305 | -0.500 => 1.00000000000 -1 -1 1 0 .10000000000 (-2 + 0) * 2^(-2) | |
306 | -1.000 => 1.00000000000 0 -1 1 0 .00000000000 (-2 + 0) * 2^(-1) | |
307 | -1.500 => 1.10000000000 0 0 1 0 .10000000000 (-2 + 0.5) * 2^(0) | |
308 | -1.999 => 1.11111111111 0 0 1 0 .00000000001 (-2 + 0.11) * 2^(0) | |
309 | -2.000 => 1.00000000000 1 1 1 0 .00000000000 (-2 + 0) * 2^(0) | |
310 | -4.000 => 1.00000000000 2 1 1 0 .00000000000 (-2 + 0) * 2^(1) | |
311 | ||
312 | where e is the exponent, s is the sign bit, i is the implied bit, | |
313 | and f is the fraction stored in the mantissa field. | |
314 | ||
315 | num = (1 + f) * 2^x = m * 2^e if s = 0 | |
316 | num = (-2 + f) * 2^x = -m * 2^e if s = 1 | |
317 | where 0 <= f < 1.0 and 1.0 <= m < 2.0 | |
318 | ||
319 | The fraction (f) and exponent (e) fields for the TMS320C3X format | |
320 | can be derived from the normalised mantissa (m) and exponent (x) using: | |
321 | ||
322 | f = m - 1, e = x if s = 0 | |
323 | f = 2 - m, e = x if s = 1 and m != 1.0 | |
324 | f = 0, e = x - 1 if s = 1 and m = 1.0 | |
325 | f = 0, e = -8 if m = 0 | |
326 | ||
327 | ||
328 | OK, the other issue we have to consider is rounding since the | |
329 | mantissa has a much higher potential precision than what we can | |
330 | represent. To do this we add half the smallest storable fraction. | |
331 | We then have to renormalise the number to allow for overflow. | |
332 | ||
333 | To convert a generic flonum into a TMS320C3X floating point | |
334 | number, here's what we try to do.... | |
335 | ||
336 | The first thing is to generate a normalised mantissa (m) where | |
337 | 1.0 <= m < 2 and to convert the exponent from base 16 to base 2. | |
338 | We desire the binary point to be placed after the most significant | |
339 | non zero bit. This process is done in two steps: firstly, the | |
340 | littlenum with the most significant non zero bit is located (this | |
341 | is done for us since leader points to this littlenum) and the | |
342 | binary point (which is currently after the LSB of the littlenum | |
343 | pointed to by low) is moved to before the MSB of the littlenum | |
344 | pointed to by leader. This requires the exponent to be adjusted | |
345 | by leader - low + 1. In the earlier example, the new exponent is | |
346 | thus -4 + (5 - 2 + 1) = 0 (base 65536). We now need to convert | |
347 | the exponent to base 2 by multiplying the exponent by 16 (log2 | |
348 | 65536). The exponent base 2 is thus also zero. | |
349 | ||
350 | The second step is to hunt for the most significant non zero bit | |
351 | in the leader littlenum. We do this by left shifting a copy of | |
352 | the leader littlenum until bit 16 is set (0x10000) and counting | |
353 | the number of shifts, S, required. The number of shifts then has to | |
354 | be added to correct the exponent (base 2). For our example, this | |
355 | will require 9 shifts and thus our normalised exponent (base 2) is | |
356 | 0 + 9 = 9. Note that the worst case scenario is when the leader | |
357 | littlenum is 1, thus requiring 16 shifts. | |
358 | ||
359 | We now have to left shift the other littlenums by the same amount, | |
360 | propagating the shifted bits into the more significant littlenums. | |
33b7f697 | 361 | To save a lot of unnecessary shifting we only have to consider |
026df7c5 NC |
362 | two or three littlenums, since the greatest number of mantissa |
363 | bits required is 24 + 1 rounding bit. While two littlenums | |
364 | provide 32 bits of precision, the most significant littlenum | |
365 | may only contain a single significant bit and thus an extra | |
366 | littlenum is required. | |
367 | ||
368 | Denoting the number of bits in the fraction field as F, we require | |
369 | G = F + 2 bits (one extra bit is for rounding, the other gets | |
370 | suppressed). Say we required S shifts to find the most | |
371 | significant bit in the leader littlenum, the number of left shifts | |
372 | required to move this bit into bit position G - 1 is L = G + S - 17. | |
373 | Note that this shift count may be negative for the short floating | |
374 | point flavour (where F = 11 and thus G = 13 and potentially S < 3). | |
375 | If L > 0 we have to shunt the next littlenum into position. Bit | |
376 | 15 (the MSB) of the next littlenum needs to get moved into position | |
377 | L - 1 (If L > 15 we need all the bits of this littlenum and | |
378 | some more from the next one.). We subtract 16 from L and use this | |
379 | as the left shift count; the resultant value we or with the | |
380 | previous result. If L > 0, we repeat this operation. */ | |
381 | ||
382 | if (precision != S_PRECISION) | |
383 | words[1] = 0x0000; | |
247b1fe6 SS |
384 | if (precision == E_PRECISION) |
385 | words[2] = words[3] = 0x0000; | |
026df7c5 | 386 | |
247b1fe6 SS |
387 | /* 0.0e0 or NaN seen. */ |
388 | if (flonum.low > flonum.leader /* = 0.0e0 */ | |
389 | || flonum.sign == 0) /* = NaN */ | |
026df7c5 | 390 | { |
247b1fe6 | 391 | if(flonum.sign == 0) |
20203fb9 | 392 | as_bad (_("Nan, using zero.")); |
026df7c5 NC |
393 | words[0] = 0x8000; |
394 | return return_value; | |
395 | } | |
396 | ||
247b1fe6 | 397 | if (flonum.sign == 'P') |
026df7c5 NC |
398 | { |
399 | /* +INF: Replace with maximum float. */ | |
400 | if (precision == S_PRECISION) | |
401 | words[0] = 0x77ff; | |
247b1fe6 | 402 | else |
026df7c5 NC |
403 | { |
404 | words[0] = 0x7f7f; | |
405 | words[1] = 0xffff; | |
406 | } | |
247b1fe6 SS |
407 | if (precision == E_PRECISION) |
408 | { | |
409 | words[2] = 0x7fff; | |
410 | words[3] = 0xffff; | |
411 | } | |
026df7c5 NC |
412 | return return_value; |
413 | } | |
414 | else if (flonum.sign == 'N') | |
415 | { | |
416 | /* -INF: Replace with maximum float. */ | |
417 | if (precision == S_PRECISION) | |
418 | words[0] = 0x7800; | |
247b1fe6 SS |
419 | else |
420 | words[0] = 0x7f80; | |
421 | if (precision == E_PRECISION) | |
422 | words[2] = 0x8000; | |
026df7c5 NC |
423 | return return_value; |
424 | } | |
425 | ||
426 | exponent = (flonum.exponent + flonum.leader - flonum.low + 1) * 16; | |
427 | ||
428 | if (!(tmp = *flonum.leader)) | |
429 | abort (); /* Hmmm. */ | |
430 | shift = 0; /* Find position of first sig. bit. */ | |
431 | while (tmp >>= 1) | |
432 | shift++; | |
433 | exponent -= (16 - shift); /* Adjust exponent. */ | |
434 | ||
435 | if (precision == S_PRECISION) /* Allow 1 rounding bit. */ | |
436 | { | |
437 | exponent_bits = 4; | |
247b1fe6 | 438 | mantissa_bits = 11; |
026df7c5 | 439 | } |
247b1fe6 SS |
440 | else if(precision == F_PRECISION) |
441 | { | |
442 | exponent_bits = 8; | |
443 | mantissa_bits = 23; | |
444 | } | |
445 | else /* E_PRECISION */ | |
026df7c5 NC |
446 | { |
447 | exponent_bits = 8; | |
247b1fe6 | 448 | mantissa_bits = 31; |
026df7c5 NC |
449 | } |
450 | ||
451 | shift = mantissa_bits - shift; | |
452 | ||
453 | smant = 0; | |
247b1fe6 SS |
454 | mover = 0; |
455 | rbit = 0; | |
456 | /* Store the mantissa data into smant and the roundbit into rbit */ | |
026df7c5 NC |
457 | for (p = flonum.leader; p >= flonum.low && shift > -16; p--) |
458 | { | |
459 | tmp = shift >= 0 ? *p << shift : *p >> -shift; | |
247b1fe6 | 460 | rbit = shift < 0 ? ((*p >> (-shift-1)) & 0x1) : 0; |
026df7c5 NC |
461 | smant |= tmp; |
462 | shift -= 16; | |
463 | } | |
464 | ||
247b1fe6 SS |
465 | /* OK, we've got our scaled mantissa so let's round it up */ |
466 | if(rbit) | |
467 | { | |
468 | /* If the mantissa is going to overflow when added, lets store | |
469 | the extra bit in mover. -- A special case exists when | |
470 | mantissa_bits is 31 (E_PRECISION). Then the first test cannot | |
471 | be trusted, as result is host-dependent, thus the second | |
472 | test. */ | |
473 | if( smant == ((unsigned)(1<<(mantissa_bits+1))-1) | |
474 | || smant == (unsigned)-1 ) /* This is to catch E_PRECISION cases */ | |
475 | mover=1; | |
476 | smant++; | |
477 | } | |
478 | ||
479 | /* Get the scaled one value */ | |
480 | sone = (1 << (mantissa_bits)); | |
026df7c5 NC |
481 | |
482 | /* The number may be unnormalised so renormalise it... */ | |
247b1fe6 | 483 | if(mover) |
026df7c5 NC |
484 | { |
485 | smant >>= 1; | |
247b1fe6 | 486 | smant |= sone; /* Insert the bit from mover into smant */ |
026df7c5 NC |
487 | exponent++; |
488 | } | |
489 | ||
490 | /* The binary point is now between bit positions 11 and 10 or 23 and 22, | |
491 | i.e., between mantissa_bits - 1 and mantissa_bits - 2 and the | |
492 | bit at mantissa_bits - 1 should be set. */ | |
247b1fe6 SS |
493 | if (!(sone&smant)) |
494 | abort (); /* Ooops. */ | |
026df7c5 | 495 | |
026df7c5 NC |
496 | if (flonum.sign == '+') |
497 | sfract = smant - sone; /* smant - 1.0. */ | |
498 | else | |
499 | { | |
500 | /* This seems to work. */ | |
501 | if (smant == sone) | |
502 | { | |
503 | exponent--; | |
504 | sfract = 0; | |
505 | } | |
506 | else | |
247b1fe6 SS |
507 | { |
508 | sfract = -smant & (sone-1); /* 2.0 - smant. */ | |
509 | } | |
026df7c5 NC |
510 | sfract |= sone; /* Insert sign bit. */ |
511 | } | |
512 | ||
513 | if (abs (exponent) >= (1 << (exponent_bits - 1))) | |
20203fb9 | 514 | as_bad (_("Cannot represent exponent in %d bits"), exponent_bits); |
026df7c5 NC |
515 | |
516 | /* Force exponent to fit in desired field width. */ | |
517 | exponent &= (1 << (exponent_bits)) - 1; | |
026df7c5 | 518 | |
247b1fe6 SS |
519 | if (precision == E_PRECISION) |
520 | { | |
521 | /* Map the float part first (100% equal format as F_PRECISION) */ | |
522 | words[0] = exponent << (mantissa_bits+1-24); | |
523 | words[0] |= sfract >> 24; | |
524 | words[1] = sfract >> 8; | |
525 | ||
526 | /* Map the mantissa in the next */ | |
527 | words[2] = sfract >> 16; | |
528 | words[3] = sfract & 0xffff; | |
529 | } | |
026df7c5 NC |
530 | else |
531 | { | |
247b1fe6 SS |
532 | /* Insert the exponent data into the word */ |
533 | sfract |= exponent << (mantissa_bits+1); | |
534 | ||
535 | if (precision == S_PRECISION) | |
536 | words[0] = sfract; | |
537 | else | |
538 | { | |
539 | words[0] = sfract >> 16; | |
540 | words[1] = sfract & 0xffff; | |
541 | } | |
026df7c5 NC |
542 | } |
543 | ||
544 | return return_value; | |
545 | } | |
546 | ||
547 | /* Returns pointer past text consumed. */ | |
247b1fe6 | 548 | static char * |
5a49b8ac | 549 | tic4x_atof (char *str, char what_kind, LITTLENUM_TYPE *words) |
026df7c5 NC |
550 | { |
551 | /* Extra bits for zeroed low-order bits. The 1st MAX_PRECISION are | |
552 | zeroed, the last contain flonum bits. */ | |
553 | static LITTLENUM_TYPE bits[MAX_PRECISION + MAX_PRECISION + GUARD]; | |
554 | char *return_value; | |
555 | /* Number of 16-bit words in the format. */ | |
556 | int precision; | |
557 | FLONUM_TYPE save_gen_flonum; | |
558 | ||
559 | /* We have to save the generic_floating_point_number because it | |
560 | contains storage allocation about the array of LITTLENUMs where | |
561 | the value is actually stored. We will allocate our own array of | |
562 | littlenums below, but have to restore the global one on exit. */ | |
563 | save_gen_flonum = generic_floating_point_number; | |
564 | ||
565 | return_value = str; | |
566 | generic_floating_point_number.low = bits + MAX_PRECISION; | |
567 | generic_floating_point_number.high = NULL; | |
568 | generic_floating_point_number.leader = NULL; | |
569 | generic_floating_point_number.exponent = 0; | |
570 | generic_floating_point_number.sign = '\0'; | |
571 | ||
572 | /* Use more LittleNums than seems necessary: the highest flonum may | |
573 | have 15 leading 0 bits, so could be useless. */ | |
574 | ||
575 | memset (bits, '\0', sizeof (LITTLENUM_TYPE) * MAX_PRECISION); | |
576 | ||
577 | switch (what_kind) | |
578 | { | |
579 | case 's': | |
580 | case 'S': | |
581 | precision = S_PRECISION; | |
582 | break; | |
583 | ||
584 | case 'd': | |
585 | case 'D': | |
586 | case 'f': | |
587 | case 'F': | |
588 | precision = F_PRECISION; | |
589 | break; | |
590 | ||
247b1fe6 SS |
591 | case 'E': |
592 | case 'e': | |
593 | precision = E_PRECISION; | |
594 | break; | |
595 | ||
026df7c5 | 596 | default: |
20203fb9 | 597 | as_bad (_("Invalid floating point number")); |
026df7c5 NC |
598 | return (NULL); |
599 | } | |
600 | ||
601 | generic_floating_point_number.high | |
602 | = generic_floating_point_number.low + precision - 1 + GUARD; | |
603 | ||
604 | if (atof_generic (&return_value, ".", EXP_CHARS, | |
605 | &generic_floating_point_number)) | |
606 | { | |
20203fb9 | 607 | as_bad (_("Invalid floating point number")); |
026df7c5 NC |
608 | return (NULL); |
609 | } | |
610 | ||
be33c5dd | 611 | tic4x_gen_to_words (generic_floating_point_number, |
026df7c5 NC |
612 | words, precision); |
613 | ||
614 | /* Restore the generic_floating_point_number's storage alloc (and | |
615 | everything else). */ | |
616 | generic_floating_point_number = save_gen_flonum; | |
617 | ||
618 | return return_value; | |
619 | } | |
620 | ||
621 | static void | |
5a49b8ac | 622 | tic4x_insert_reg (char *regname, int regnum) |
026df7c5 NC |
623 | { |
624 | char buf[32]; | |
625 | int i; | |
626 | ||
627 | symbol_table_insert (symbol_new (regname, reg_section, (valueT) regnum, | |
628 | &zero_address_frag)); | |
629 | for (i = 0; regname[i]; i++) | |
f17c130b | 630 | buf[i] = ISLOWER (regname[i]) ? TOUPPER (regname[i]) : regname[i]; |
026df7c5 NC |
631 | buf[i] = '\0'; |
632 | ||
633 | symbol_table_insert (symbol_new (buf, reg_section, (valueT) regnum, | |
634 | &zero_address_frag)); | |
635 | } | |
636 | ||
637 | static void | |
5a49b8ac | 638 | tic4x_insert_sym (char *symname, int value) |
026df7c5 NC |
639 | { |
640 | symbolS *symbolP; | |
641 | ||
642 | symbolP = symbol_new (symname, absolute_section, | |
643 | (valueT) value, &zero_address_frag); | |
644 | SF_SET_LOCAL (symbolP); | |
645 | symbol_table_insert (symbolP); | |
646 | } | |
647 | ||
648 | static char * | |
5a49b8ac | 649 | tic4x_expression (char *str, expressionS *exp) |
026df7c5 NC |
650 | { |
651 | char *s; | |
652 | char *t; | |
653 | ||
654 | t = input_line_pointer; /* Save line pointer. */ | |
655 | input_line_pointer = str; | |
656 | expression (exp); | |
657 | s = input_line_pointer; | |
658 | input_line_pointer = t; /* Restore line pointer. */ | |
659 | return s; /* Return pointer to where parsing stopped. */ | |
660 | } | |
661 | ||
662 | static char * | |
5a49b8ac | 663 | tic4x_expression_abs (char *str, offsetT *value) |
026df7c5 NC |
664 | { |
665 | char *s; | |
666 | char *t; | |
667 | ||
668 | t = input_line_pointer; /* Save line pointer. */ | |
669 | input_line_pointer = str; | |
670 | *value = get_absolute_expression (); | |
671 | s = input_line_pointer; | |
672 | input_line_pointer = t; /* Restore line pointer. */ | |
673 | return s; | |
674 | } | |
675 | ||
676 | static void | |
5a49b8ac | 677 | tic4x_emit_char (char c, int b) |
026df7c5 NC |
678 | { |
679 | expressionS exp; | |
680 | ||
681 | exp.X_op = O_constant; | |
682 | exp.X_add_number = c; | |
247b1fe6 | 683 | emit_expr (&exp, b); |
026df7c5 NC |
684 | } |
685 | ||
686 | static void | |
5a49b8ac AM |
687 | tic4x_seg_alloc (char *name ATTRIBUTE_UNUSED, |
688 | segT seg ATTRIBUTE_UNUSED, | |
689 | int size, | |
690 | symbolS *symbolP) | |
026df7c5 NC |
691 | { |
692 | /* Note that the size is in words | |
693 | so we multiply it by 4 to get the number of bytes to allocate. */ | |
694 | ||
695 | /* If we have symbol: .usect ".fred", size etc., | |
696 | the symbol needs to point to the first location reserved | |
697 | by the pseudo op. */ | |
698 | ||
699 | if (size) | |
700 | { | |
701 | char *p; | |
702 | ||
703 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, | |
704 | (symbolS *) symbolP, | |
705 | size * OCTETS_PER_BYTE, (char *) 0); | |
706 | *p = 0; | |
707 | } | |
708 | } | |
709 | ||
710 | /* .asg ["]character-string["], symbol */ | |
711 | static void | |
5a49b8ac | 712 | tic4x_asg (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
713 | { |
714 | char c; | |
715 | char *name; | |
716 | char *str; | |
717 | char *tmp; | |
718 | ||
719 | SKIP_WHITESPACE (); | |
720 | str = input_line_pointer; | |
721 | ||
722 | /* Skip string expression. */ | |
723 | while (*input_line_pointer != ',' && *input_line_pointer) | |
724 | input_line_pointer++; | |
725 | if (*input_line_pointer != ',') | |
726 | { | |
20203fb9 | 727 | as_bad (_("Comma expected\n")); |
026df7c5 NC |
728 | return; |
729 | } | |
730 | *input_line_pointer++ = '\0'; | |
731 | name = input_line_pointer; | |
732 | c = get_symbol_end (); /* Get terminator. */ | |
733 | tmp = xmalloc (strlen (str) + 1); | |
734 | strcpy (tmp, str); | |
735 | str = tmp; | |
736 | tmp = xmalloc (strlen (name) + 1); | |
737 | strcpy (tmp, name); | |
738 | name = tmp; | |
be33c5dd | 739 | if (hash_find (tic4x_asg_hash, name)) |
5a49b8ac | 740 | hash_replace (tic4x_asg_hash, name, (void *) str); |
026df7c5 | 741 | else |
5a49b8ac | 742 | hash_insert (tic4x_asg_hash, name, (void *) str); |
026df7c5 NC |
743 | *input_line_pointer = c; |
744 | demand_empty_rest_of_line (); | |
745 | } | |
746 | ||
747 | /* .bss symbol, size */ | |
748 | static void | |
5a49b8ac | 749 | tic4x_bss (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
750 | { |
751 | char c; | |
752 | char *name; | |
753 | char *p; | |
2132e3a3 | 754 | offsetT size; |
026df7c5 NC |
755 | segT current_seg; |
756 | subsegT current_subseg; | |
757 | symbolS *symbolP; | |
758 | ||
759 | current_seg = now_seg; /* Save current seg. */ | |
760 | current_subseg = now_subseg; /* Save current subseg. */ | |
761 | ||
762 | SKIP_WHITESPACE (); | |
763 | name = input_line_pointer; | |
764 | c = get_symbol_end (); /* Get terminator. */ | |
765 | if (c != ',') | |
766 | { | |
20203fb9 | 767 | as_bad (_(".bss size argument missing\n")); |
026df7c5 NC |
768 | return; |
769 | } | |
770 | ||
771 | input_line_pointer = | |
be33c5dd | 772 | tic4x_expression_abs (++input_line_pointer, &size); |
026df7c5 NC |
773 | if (size < 0) |
774 | { | |
20203fb9 | 775 | as_bad (_(".bss size %ld < 0!"), (long) size); |
026df7c5 NC |
776 | return; |
777 | } | |
778 | subseg_set (bss_section, 0); | |
779 | symbolP = symbol_find_or_make (name); | |
780 | ||
781 | if (S_GET_SEGMENT (symbolP) == bss_section) | |
782 | symbol_get_frag (symbolP)->fr_symbol = 0; | |
783 | ||
784 | symbol_set_frag (symbolP, frag_now); | |
785 | ||
786 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, | |
787 | size * OCTETS_PER_BYTE, (char *) 0); | |
788 | *p = 0; /* Fill char. */ | |
789 | ||
790 | S_SET_SEGMENT (symbolP, bss_section); | |
791 | ||
792 | /* The symbol may already have been created with a preceding | |
793 | ".globl" directive -- be careful not to step on storage class | |
794 | in that case. Otherwise, set it to static. */ | |
795 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
796 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
797 | ||
798 | subseg_set (current_seg, current_subseg); /* Restore current seg. */ | |
799 | demand_empty_rest_of_line (); | |
800 | } | |
801 | ||
247b1fe6 | 802 | static void |
5a49b8ac | 803 | tic4x_globl (int ignore ATTRIBUTE_UNUSED) |
026df7c5 NC |
804 | { |
805 | char *name; | |
806 | int c; | |
807 | symbolS *symbolP; | |
808 | ||
809 | do | |
810 | { | |
811 | name = input_line_pointer; | |
812 | c = get_symbol_end (); | |
813 | symbolP = symbol_find_or_make (name); | |
814 | *input_line_pointer = c; | |
815 | SKIP_WHITESPACE (); | |
816 | S_SET_STORAGE_CLASS (symbolP, C_EXT); | |
e144674a | 817 | S_SET_EXTERNAL (symbolP); |
026df7c5 NC |
818 | if (c == ',') |
819 | { | |
820 | input_line_pointer++; | |
821 | SKIP_WHITESPACE (); | |
822 | if (*input_line_pointer == '\n') | |
823 | c = '\n'; | |
824 | } | |
825 | } | |
826 | while (c == ','); | |
827 | ||
828 | demand_empty_rest_of_line (); | |
829 | } | |
830 | ||
831 | /* Handle .byte, .word. .int, .long */ | |
832 | static void | |
5a49b8ac | 833 | tic4x_cons (int bytes) |
026df7c5 NC |
834 | { |
835 | register unsigned int c; | |
836 | do | |
837 | { | |
838 | SKIP_WHITESPACE (); | |
839 | if (*input_line_pointer == '"') | |
840 | { | |
841 | input_line_pointer++; | |
842 | while (is_a_char (c = next_char_of_string ())) | |
be33c5dd | 843 | tic4x_emit_char (c, 4); |
026df7c5 NC |
844 | know (input_line_pointer[-1] == '\"'); |
845 | } | |
846 | else | |
847 | { | |
848 | expressionS exp; | |
849 | ||
be33c5dd | 850 | input_line_pointer = tic4x_expression (input_line_pointer, &exp); |
026df7c5 NC |
851 | if (exp.X_op == O_constant) |
852 | { | |
853 | switch (bytes) | |
854 | { | |
855 | case 1: | |
856 | exp.X_add_number &= 255; | |
857 | break; | |
858 | case 2: | |
859 | exp.X_add_number &= 65535; | |
860 | break; | |
861 | } | |
862 | } | |
863 | /* Perhaps we should disallow .byte and .hword with | |
864 | a non constant expression that will require relocation. */ | |
865 | emit_expr (&exp, 4); | |
866 | } | |
867 | } | |
868 | while (*input_line_pointer++ == ','); | |
869 | ||
870 | input_line_pointer--; /* Put terminator back into stream. */ | |
871 | demand_empty_rest_of_line (); | |
872 | } | |
873 | ||
247b1fe6 SS |
874 | /* Handle .ascii, .asciz, .string */ |
875 | static void | |
5a49b8ac | 876 | tic4x_stringer (int append_zero) |
247b1fe6 SS |
877 | { |
878 | int bytes; | |
879 | register unsigned int c; | |
880 | ||
881 | bytes = 0; | |
882 | do | |
883 | { | |
884 | SKIP_WHITESPACE (); | |
885 | if (*input_line_pointer == '"') | |
886 | { | |
887 | input_line_pointer++; | |
888 | while (is_a_char (c = next_char_of_string ())) | |
889 | { | |
be33c5dd | 890 | tic4x_emit_char (c, 1); |
247b1fe6 SS |
891 | bytes++; |
892 | } | |
893 | ||
894 | if (append_zero) | |
895 | { | |
be33c5dd | 896 | tic4x_emit_char (c, 1); |
247b1fe6 SS |
897 | bytes++; |
898 | } | |
899 | ||
900 | know (input_line_pointer[-1] == '\"'); | |
901 | } | |
902 | else | |
903 | { | |
904 | expressionS exp; | |
905 | ||
be33c5dd | 906 | input_line_pointer = tic4x_expression (input_line_pointer, &exp); |
247b1fe6 SS |
907 | if (exp.X_op != O_constant) |
908 | { | |
20203fb9 | 909 | as_bad (_("Non-constant symbols not allowed\n")); |
247b1fe6 SS |
910 | return; |
911 | } | |
912 | exp.X_add_number &= 255; /* Limit numeber to 8-bit */ | |
913 | emit_expr (&exp, 1); | |
914 | bytes++; | |
915 | } | |
916 | } | |
917 | while (*input_line_pointer++ == ','); | |
918 | ||
919 | /* Fill out the rest of the expression with 0's to fill up a full word */ | |
920 | if ( bytes&0x3 ) | |
be33c5dd | 921 | tic4x_emit_char (0, 4-(bytes&0x3)); |
247b1fe6 SS |
922 | |
923 | input_line_pointer--; /* Put terminator back into stream. */ | |
924 | demand_empty_rest_of_line (); | |
925 | } | |
926 | ||
026df7c5 NC |
927 | /* .eval expression, symbol */ |
928 | static void | |
5a49b8ac | 929 | tic4x_eval (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
930 | { |
931 | char c; | |
2132e3a3 | 932 | offsetT value; |
026df7c5 NC |
933 | char *name; |
934 | ||
935 | SKIP_WHITESPACE (); | |
936 | input_line_pointer = | |
be33c5dd | 937 | tic4x_expression_abs (input_line_pointer, &value); |
026df7c5 NC |
938 | if (*input_line_pointer++ != ',') |
939 | { | |
20203fb9 | 940 | as_bad (_("Symbol missing\n")); |
026df7c5 NC |
941 | return; |
942 | } | |
943 | name = input_line_pointer; | |
944 | c = get_symbol_end (); /* Get terminator. */ | |
be33c5dd | 945 | tic4x_insert_sym (name, value); |
87975d2a AM |
946 | *input_line_pointer++ = c; |
947 | demand_empty_rest_of_line (); | |
026df7c5 NC |
948 | } |
949 | ||
950 | /* Reset local labels. */ | |
951 | static void | |
5a49b8ac | 952 | tic4x_newblock (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
953 | { |
954 | dollar_label_clear (); | |
955 | } | |
956 | ||
957 | /* .sect "section-name" [, value] */ | |
958 | /* .sect ["]section-name[:subsection-name]["] [, value] */ | |
959 | static void | |
5a49b8ac | 960 | tic4x_sect (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
961 | { |
962 | char c; | |
963 | char *section_name; | |
026df7c5 NC |
964 | char *name; |
965 | segT seg; | |
2132e3a3 | 966 | offsetT num; |
026df7c5 NC |
967 | |
968 | SKIP_WHITESPACE (); | |
969 | if (*input_line_pointer == '"') | |
970 | input_line_pointer++; | |
971 | section_name = input_line_pointer; | |
972 | c = get_symbol_end (); /* Get terminator. */ | |
973 | input_line_pointer++; /* Skip null symbol terminator. */ | |
974 | name = xmalloc (input_line_pointer - section_name + 1); | |
975 | strcpy (name, section_name); | |
976 | ||
977 | /* TI C from version 5.0 allows a section name to contain a | |
978 | subsection name as well. The subsection name is separated by a | |
979 | ':' from the section name. Currently we scan the subsection | |
980 | name and discard it. | |
981 | Volker Kuhlmann <v.kuhlmann@elec.canterbury.ac.nz>. */ | |
982 | if (c == ':') | |
983 | { | |
026df7c5 NC |
984 | c = get_symbol_end (); /* Get terminator. */ |
985 | input_line_pointer++; /* Skip null symbol terminator. */ | |
20203fb9 | 986 | as_warn (_(".sect: subsection name ignored")); |
026df7c5 NC |
987 | } |
988 | ||
989 | /* We might still have a '"' to discard, but the character after a | |
990 | symbol name will be overwritten with a \0 by get_symbol_end() | |
991 | [VK]. */ | |
992 | ||
993 | if (c == ',') | |
994 | input_line_pointer = | |
be33c5dd | 995 | tic4x_expression_abs (input_line_pointer, &num); |
026df7c5 NC |
996 | else if (*input_line_pointer == ',') |
997 | { | |
998 | input_line_pointer = | |
be33c5dd | 999 | tic4x_expression_abs (++input_line_pointer, &num); |
026df7c5 NC |
1000 | } |
1001 | else | |
1002 | num = 0; | |
1003 | ||
1004 | seg = subseg_new (name, num); | |
1005 | if (line_label != NULL) | |
1006 | { | |
1007 | S_SET_SEGMENT (line_label, seg); | |
1008 | symbol_set_frag (line_label, frag_now); | |
1009 | } | |
1010 | ||
1011 | if (bfd_get_section_flags (stdoutput, seg) == SEC_NO_FLAGS) | |
1012 | { | |
1013 | if (!bfd_set_section_flags (stdoutput, seg, SEC_DATA)) | |
20203fb9 | 1014 | as_warn (_("Error setting flags for \"%s\": %s"), name, |
026df7c5 NC |
1015 | bfd_errmsg (bfd_get_error ())); |
1016 | } | |
1017 | ||
1018 | /* If the last character overwritten by get_symbol_end() was an | |
1019 | end-of-line, we must restore it or the end of the line will not be | |
1020 | recognised and scanning extends into the next line, stopping with | |
1021 | an error (blame Volker Kuhlmann <v.kuhlmann@elec.canterbury.ac.nz> | |
1022 | if this is not true). */ | |
1023 | if (is_end_of_line[(unsigned char) c]) | |
1024 | *(--input_line_pointer) = c; | |
1025 | ||
1026 | demand_empty_rest_of_line (); | |
1027 | } | |
1028 | ||
1029 | /* symbol[:] .set value or .set symbol, value */ | |
1030 | static void | |
5a49b8ac | 1031 | tic4x_set (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
1032 | { |
1033 | symbolS *symbolP; | |
1034 | ||
1035 | SKIP_WHITESPACE (); | |
1036 | if ((symbolP = line_label) == NULL) | |
1037 | { | |
1038 | char c; | |
1039 | char *name; | |
1040 | ||
1041 | name = input_line_pointer; | |
1042 | c = get_symbol_end (); /* Get terminator. */ | |
1043 | if (c != ',') | |
1044 | { | |
20203fb9 | 1045 | as_bad (_(".set syntax invalid\n")); |
026df7c5 NC |
1046 | ignore_rest_of_line (); |
1047 | return; | |
1048 | } | |
90e3ad06 | 1049 | ++input_line_pointer; |
026df7c5 NC |
1050 | symbolP = symbol_find_or_make (name); |
1051 | } | |
1052 | else | |
1053 | symbol_table_insert (symbolP); | |
1054 | ||
1055 | pseudo_set (symbolP); | |
1056 | demand_empty_rest_of_line (); | |
1057 | } | |
1058 | ||
1059 | /* [symbol] .usect ["]section-name["], size-in-words [, alignment-flag] */ | |
1060 | static void | |
5a49b8ac | 1061 | tic4x_usect (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
1062 | { |
1063 | char c; | |
1064 | char *name; | |
1065 | char *section_name; | |
1066 | segT seg; | |
2132e3a3 | 1067 | offsetT size, alignment_flag; |
026df7c5 NC |
1068 | segT current_seg; |
1069 | subsegT current_subseg; | |
1070 | ||
1071 | current_seg = now_seg; /* save current seg. */ | |
1072 | current_subseg = now_subseg; /* save current subseg. */ | |
1073 | ||
1074 | SKIP_WHITESPACE (); | |
1075 | if (*input_line_pointer == '"') | |
1076 | input_line_pointer++; | |
1077 | section_name = input_line_pointer; | |
1078 | c = get_symbol_end (); /* Get terminator. */ | |
1079 | input_line_pointer++; /* Skip null symbol terminator. */ | |
1080 | name = xmalloc (input_line_pointer - section_name + 1); | |
1081 | strcpy (name, section_name); | |
1082 | ||
1083 | if (c == ',') | |
1084 | input_line_pointer = | |
be33c5dd | 1085 | tic4x_expression_abs (input_line_pointer, &size); |
026df7c5 NC |
1086 | else if (*input_line_pointer == ',') |
1087 | { | |
1088 | input_line_pointer = | |
be33c5dd | 1089 | tic4x_expression_abs (++input_line_pointer, &size); |
026df7c5 NC |
1090 | } |
1091 | else | |
1092 | size = 0; | |
1093 | ||
1094 | /* Read a possibly present third argument (alignment flag) [VK]. */ | |
1095 | if (*input_line_pointer == ',') | |
1096 | { | |
1097 | input_line_pointer = | |
be33c5dd | 1098 | tic4x_expression_abs (++input_line_pointer, &alignment_flag); |
026df7c5 NC |
1099 | } |
1100 | else | |
1101 | alignment_flag = 0; | |
1102 | if (alignment_flag) | |
20203fb9 | 1103 | as_warn (_(".usect: non-zero alignment flag ignored")); |
026df7c5 NC |
1104 | |
1105 | seg = subseg_new (name, 0); | |
1106 | if (line_label != NULL) | |
1107 | { | |
1108 | S_SET_SEGMENT (line_label, seg); | |
1109 | symbol_set_frag (line_label, frag_now); | |
1110 | S_SET_VALUE (line_label, frag_now_fix ()); | |
1111 | } | |
1112 | seg_info (seg)->bss = 1; /* Uninitialised data. */ | |
1113 | if (!bfd_set_section_flags (stdoutput, seg, SEC_ALLOC)) | |
20203fb9 | 1114 | as_warn (_("Error setting flags for \"%s\": %s"), name, |
026df7c5 | 1115 | bfd_errmsg (bfd_get_error ())); |
be33c5dd | 1116 | tic4x_seg_alloc (name, seg, size, line_label); |
026df7c5 NC |
1117 | |
1118 | if (S_GET_STORAGE_CLASS (line_label) != C_EXT) | |
1119 | S_SET_STORAGE_CLASS (line_label, C_STAT); | |
1120 | ||
1121 | subseg_set (current_seg, current_subseg); /* Restore current seg. */ | |
1122 | demand_empty_rest_of_line (); | |
1123 | } | |
1124 | ||
1125 | /* .version cpu-version. */ | |
1126 | static void | |
5a49b8ac | 1127 | tic4x_version (int x ATTRIBUTE_UNUSED) |
026df7c5 | 1128 | { |
2132e3a3 | 1129 | offsetT temp; |
026df7c5 NC |
1130 | |
1131 | input_line_pointer = | |
be33c5dd SS |
1132 | tic4x_expression_abs (input_line_pointer, &temp); |
1133 | if (!IS_CPU_TIC3X (temp) && !IS_CPU_TIC4X (temp)) | |
20203fb9 | 1134 | as_bad (_("This assembler does not support processor generation %ld"), |
2132e3a3 | 1135 | (long) temp); |
026df7c5 | 1136 | |
2132e3a3 | 1137 | if (tic4x_cpu && temp != (offsetT) tic4x_cpu) |
20203fb9 | 1138 | as_warn (_("Changing processor generation on fly not supported...")); |
be33c5dd | 1139 | tic4x_cpu = temp; |
026df7c5 NC |
1140 | demand_empty_rest_of_line (); |
1141 | } | |
1142 | ||
026df7c5 | 1143 | static void |
5a49b8ac | 1144 | tic4x_init_regtable (void) |
026df7c5 NC |
1145 | { |
1146 | unsigned int i; | |
1147 | ||
be33c5dd SS |
1148 | for (i = 0; i < tic3x_num_registers; i++) |
1149 | tic4x_insert_reg (tic3x_registers[i].name, | |
1150 | tic3x_registers[i].regno); | |
026df7c5 | 1151 | |
be33c5dd | 1152 | if (IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 | 1153 | { |
be33c5dd SS |
1154 | /* Add additional Tic4x registers, overriding some C3x ones. */ |
1155 | for (i = 0; i < tic4x_num_registers; i++) | |
1156 | tic4x_insert_reg (tic4x_registers[i].name, | |
1157 | tic4x_registers[i].regno); | |
026df7c5 NC |
1158 | } |
1159 | } | |
1160 | ||
1161 | static void | |
5a49b8ac | 1162 | tic4x_init_symbols (void) |
026df7c5 NC |
1163 | { |
1164 | /* The TI tools accept case insensitive versions of these symbols, | |
1165 | we don't ! | |
1166 | ||
1167 | For TI C/Asm 5.0 | |
1168 | ||
1169 | .TMS320xx 30,31,32,40,or 44 set according to -v flag | |
1170 | .C3X or .C3x 1 or 0 1 if -v30,-v31,or -v32 | |
1171 | .C30 1 or 0 1 if -v30 | |
1172 | .C31 1 or 0 1 if -v31 | |
1173 | .C32 1 or 0 1 if -v32 | |
1174 | .C4X or .C4x 1 or 0 1 if -v40, or -v44 | |
1175 | .C40 1 or 0 1 if -v40 | |
1176 | .C44 1 or 0 1 if -v44 | |
1177 | ||
1178 | .REGPARM 1 or 0 1 if -mr option used | |
1179 | .BIGMODEL 1 or 0 1 if -mb option used | |
1180 | ||
1181 | These symbols are currently supported but will be removed in a | |
1182 | later version: | |
1183 | .TMS320C30 1 or 0 1 if -v30,-v31,or -v32 | |
1184 | .TMS320C31 1 or 0 1 if -v31 | |
1185 | .TMS320C32 1 or 0 1 if -v32 | |
1186 | .TMS320C40 1 or 0 1 if -v40, or -v44 | |
1187 | .TMS320C44 1 or 0 1 if -v44 | |
1188 | ||
1189 | Source: TI: TMS320C3x/C4x Assembly Language Tools User's Guide, | |
1190 | 1997, SPRU035C, p. 3-17/3-18. */ | |
be33c5dd SS |
1191 | tic4x_insert_sym (".REGPARM", tic4x_reg_args); |
1192 | tic4x_insert_sym (".MEMPARM", !tic4x_reg_args); | |
1193 | tic4x_insert_sym (".BIGMODEL", tic4x_big_model); | |
1194 | tic4x_insert_sym (".C30INTERRUPT", 0); | |
1195 | tic4x_insert_sym (".TMS320xx", tic4x_cpu == 0 ? 40 : tic4x_cpu); | |
1196 | tic4x_insert_sym (".C3X", tic4x_cpu == 30 || tic4x_cpu == 31 || tic4x_cpu == 32 || tic4x_cpu == 33); | |
1197 | tic4x_insert_sym (".C3x", tic4x_cpu == 30 || tic4x_cpu == 31 || tic4x_cpu == 32 || tic4x_cpu == 33); | |
1198 | tic4x_insert_sym (".C4X", tic4x_cpu == 0 || tic4x_cpu == 40 || tic4x_cpu == 44); | |
1199 | tic4x_insert_sym (".C4x", tic4x_cpu == 0 || tic4x_cpu == 40 || tic4x_cpu == 44); | |
026df7c5 | 1200 | /* Do we need to have the following symbols also in lower case? */ |
be33c5dd SS |
1201 | tic4x_insert_sym (".TMS320C30", tic4x_cpu == 30 || tic4x_cpu == 31 || tic4x_cpu == 32 || tic4x_cpu == 33); |
1202 | tic4x_insert_sym (".tms320C30", tic4x_cpu == 30 || tic4x_cpu == 31 || tic4x_cpu == 32 || tic4x_cpu == 33); | |
1203 | tic4x_insert_sym (".TMS320C31", tic4x_cpu == 31); | |
1204 | tic4x_insert_sym (".tms320C31", tic4x_cpu == 31); | |
1205 | tic4x_insert_sym (".TMS320C32", tic4x_cpu == 32); | |
1206 | tic4x_insert_sym (".tms320C32", tic4x_cpu == 32); | |
1207 | tic4x_insert_sym (".TMS320C33", tic4x_cpu == 33); | |
1208 | tic4x_insert_sym (".tms320C33", tic4x_cpu == 33); | |
1209 | tic4x_insert_sym (".TMS320C40", tic4x_cpu == 40 || tic4x_cpu == 44 || tic4x_cpu == 0); | |
1210 | tic4x_insert_sym (".tms320C40", tic4x_cpu == 40 || tic4x_cpu == 44 || tic4x_cpu == 0); | |
1211 | tic4x_insert_sym (".TMS320C44", tic4x_cpu == 44); | |
1212 | tic4x_insert_sym (".tms320C44", tic4x_cpu == 44); | |
1213 | tic4x_insert_sym (".TMX320C40", 0); /* C40 first pass silicon ? */ | |
1214 | tic4x_insert_sym (".tmx320C40", 0); | |
026df7c5 NC |
1215 | } |
1216 | ||
1217 | /* Insert a new instruction template into hash table. */ | |
1218 | static int | |
9c95b521 | 1219 | tic4x_inst_insert (const tic4x_inst_t *inst) |
026df7c5 NC |
1220 | { |
1221 | static char prev_name[16]; | |
1222 | const char *retval = NULL; | |
1223 | ||
1224 | /* Only insert the first name if have several similar entries. */ | |
1225 | if (!strcmp (inst->name, prev_name) || inst->name[0] == '\0') | |
1226 | return 1; | |
1227 | ||
5a49b8ac | 1228 | retval = hash_insert (tic4x_op_hash, inst->name, (void *) inst); |
026df7c5 NC |
1229 | if (retval != NULL) |
1230 | fprintf (stderr, "internal error: can't hash `%s': %s\n", | |
1231 | inst->name, retval); | |
1232 | else | |
1233 | strcpy (prev_name, inst->name); | |
1234 | return retval == NULL; | |
1235 | } | |
1236 | ||
1237 | /* Make a new instruction template. */ | |
be33c5dd | 1238 | static tic4x_inst_t * |
5a49b8ac | 1239 | tic4x_inst_make (char *name, unsigned long opcode, char *args) |
026df7c5 | 1240 | { |
be33c5dd | 1241 | static tic4x_inst_t *insts = NULL; |
026df7c5 | 1242 | static char *names = NULL; |
91d6fa6a | 1243 | static int iindex = 0; |
026df7c5 NC |
1244 | |
1245 | if (insts == NULL) | |
1246 | { | |
1247 | /* Allocate memory to store name strings. */ | |
1248 | names = (char *) xmalloc (sizeof (char) * 8192); | |
1249 | /* Allocate memory for additional insts. */ | |
be33c5dd SS |
1250 | insts = (tic4x_inst_t *) |
1251 | xmalloc (sizeof (tic4x_inst_t) * 1024); | |
026df7c5 | 1252 | } |
91d6fa6a NC |
1253 | insts[iindex].name = names; |
1254 | insts[iindex].opcode = opcode; | |
1255 | insts[iindex].opmask = 0xffffffff; | |
1256 | insts[iindex].args = args; | |
1257 | iindex++; | |
026df7c5 NC |
1258 | |
1259 | do | |
1260 | *names++ = *name++; | |
1261 | while (*name); | |
1262 | *names++ = '\0'; | |
1263 | ||
91d6fa6a | 1264 | return &insts[iindex - 1]; |
026df7c5 NC |
1265 | } |
1266 | ||
1267 | /* Add instruction template, creating dynamic templates as required. */ | |
1268 | static int | |
9c95b521 | 1269 | tic4x_inst_add (const tic4x_inst_t *insts) |
026df7c5 NC |
1270 | { |
1271 | char *s = insts->name; | |
1272 | char *d; | |
1273 | unsigned int i; | |
1274 | int ok = 1; | |
1275 | char name[16]; | |
1276 | ||
1277 | d = name; | |
1278 | ||
9c87d6c7 | 1279 | /* We do not care about INSNs that is not a part of our |
7ba29e2a NC |
1280 | oplevel setting. */ |
1281 | if ((insts->oplevel & tic4x_oplevel) == 0) | |
9c87d6c7 SS |
1282 | return ok; |
1283 | ||
026df7c5 NC |
1284 | while (1) |
1285 | { | |
1286 | switch (*s) | |
1287 | { | |
1288 | case 'B': | |
1289 | case 'C': | |
1290 | /* Dynamically create all the conditional insts. */ | |
be33c5dd | 1291 | for (i = 0; i < tic4x_num_conds; i++) |
026df7c5 | 1292 | { |
be33c5dd | 1293 | tic4x_inst_t *inst; |
026df7c5 | 1294 | int k = 0; |
be33c5dd | 1295 | char *c = tic4x_conds[i].name; |
026df7c5 NC |
1296 | char *e = d; |
1297 | ||
1298 | while (*c) | |
1299 | *e++ = *c++; | |
1300 | c = s + 1; | |
1301 | while (*c) | |
1302 | *e++ = *c++; | |
1303 | *e = '\0'; | |
1304 | ||
1305 | /* If instruction found then have already processed it. */ | |
be33c5dd | 1306 | if (hash_find (tic4x_op_hash, name)) |
026df7c5 NC |
1307 | return 1; |
1308 | ||
1309 | do | |
1310 | { | |
be33c5dd SS |
1311 | inst = tic4x_inst_make (name, insts[k].opcode + |
1312 | (tic4x_conds[i].cond << | |
026df7c5 NC |
1313 | (*s == 'B' ? 16 : 23)), |
1314 | insts[k].args); | |
1315 | if (k == 0) /* Save strcmp() with following func. */ | |
be33c5dd | 1316 | ok &= tic4x_inst_insert (inst); |
026df7c5 NC |
1317 | k++; |
1318 | } | |
1319 | while (!strcmp (insts->name, | |
1320 | insts[k].name)); | |
1321 | } | |
1322 | return ok; | |
1323 | break; | |
1324 | ||
1325 | case '\0': | |
be33c5dd | 1326 | return tic4x_inst_insert (insts); |
026df7c5 NC |
1327 | break; |
1328 | ||
1329 | default: | |
1330 | *d++ = *s++; | |
1331 | break; | |
1332 | } | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | /* This function is called once, at assembler startup time. It should | |
1337 | set up all the tables, etc., that the MD part of the assembler will | |
1338 | need. */ | |
1339 | void | |
5a49b8ac | 1340 | md_begin (void) |
026df7c5 NC |
1341 | { |
1342 | int ok = 1; | |
1343 | unsigned int i; | |
1344 | ||
9c87d6c7 SS |
1345 | /* Setup the proper opcode level according to the |
1346 | commandline parameters */ | |
be33c5dd SS |
1347 | tic4x_oplevel = OP_C3X; |
1348 | ||
1349 | if ( IS_CPU_TIC4X(tic4x_cpu) ) | |
1350 | tic4x_oplevel |= OP_C4X; | |
1351 | ||
1352 | if ( ( tic4x_cpu == 31 && tic4x_revision >= 6) | |
1353 | || (tic4x_cpu == 32 && tic4x_revision >= 2) | |
1354 | || (tic4x_cpu == 33) | |
1355 | || tic4x_enhanced ) | |
1356 | tic4x_oplevel |= OP_ENH; | |
1357 | ||
1358 | if ( ( tic4x_cpu == 30 && tic4x_revision >= 7) | |
1359 | || (tic4x_cpu == 31 && tic4x_revision >= 5) | |
1360 | || (tic4x_cpu == 32) | |
1361 | || tic4x_lowpower ) | |
1362 | tic4x_oplevel |= OP_LPWR; | |
1363 | ||
1364 | if ( ( tic4x_cpu == 30 && tic4x_revision >= 7) | |
1365 | || (tic4x_cpu == 31 && tic4x_revision >= 5) | |
1366 | || (tic4x_cpu == 32) | |
1367 | || (tic4x_cpu == 33) | |
1368 | || (tic4x_cpu == 40 && tic4x_revision >= 5) | |
1369 | || (tic4x_cpu == 44) | |
1370 | || tic4x_idle2 ) | |
1371 | tic4x_oplevel |= OP_IDLE2; | |
9c87d6c7 | 1372 | |
026df7c5 | 1373 | /* Create hash table for mnemonics. */ |
be33c5dd | 1374 | tic4x_op_hash = hash_new (); |
026df7c5 NC |
1375 | |
1376 | /* Create hash table for asg pseudo. */ | |
be33c5dd | 1377 | tic4x_asg_hash = hash_new (); |
026df7c5 NC |
1378 | |
1379 | /* Add mnemonics to hash table, expanding conditional mnemonics on fly. */ | |
be33c5dd | 1380 | for (i = 0; i < tic4x_num_insts; i++) |
9c95b521 | 1381 | ok &= tic4x_inst_add (tic4x_insts + i); |
026df7c5 NC |
1382 | |
1383 | /* Create dummy inst to avoid errors accessing end of table. */ | |
be33c5dd | 1384 | tic4x_inst_make ("", 0, ""); |
026df7c5 NC |
1385 | |
1386 | if (!ok) | |
1387 | as_fatal ("Broken assembler. No assembly attempted."); | |
1388 | ||
1389 | /* Add registers to symbol table. */ | |
be33c5dd | 1390 | tic4x_init_regtable (); |
026df7c5 NC |
1391 | |
1392 | /* Add predefined symbols to symbol table. */ | |
be33c5dd | 1393 | tic4x_init_symbols (); |
026df7c5 NC |
1394 | } |
1395 | ||
1396 | void | |
5a49b8ac | 1397 | tic4x_end (void) |
026df7c5 NC |
1398 | { |
1399 | bfd_set_arch_mach (stdoutput, bfd_arch_tic4x, | |
be33c5dd | 1400 | IS_CPU_TIC4X (tic4x_cpu) ? bfd_mach_tic4x : bfd_mach_tic3x); |
026df7c5 NC |
1401 | } |
1402 | ||
1403 | static int | |
5a49b8ac AM |
1404 | tic4x_indirect_parse (tic4x_operand_t *operand, |
1405 | const tic4x_indirect_t *indirect) | |
026df7c5 NC |
1406 | { |
1407 | char *n = indirect->name; | |
1408 | char *s = input_line_pointer; | |
1409 | char *b; | |
1410 | symbolS *symbolP; | |
1411 | char name[32]; | |
1412 | ||
1413 | operand->disp = 0; | |
1414 | for (; *n; n++) | |
1415 | { | |
1416 | switch (*n) | |
1417 | { | |
1418 | case 'a': /* Need to match aux register. */ | |
1419 | b = name; | |
be33c5dd | 1420 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 NC |
1421 | if (*s == '%') |
1422 | s++; | |
1423 | #endif | |
278ed128 | 1424 | while (ISALNUM (*s)) |
026df7c5 NC |
1425 | *b++ = *s++; |
1426 | *b++ = '\0'; | |
1427 | if (!(symbolP = symbol_find (name))) | |
1428 | return 0; | |
1429 | ||
1430 | if (S_GET_SEGMENT (symbolP) != reg_section) | |
1431 | return 0; | |
1432 | ||
1433 | operand->aregno = S_GET_VALUE (symbolP); | |
1434 | if (operand->aregno >= REG_AR0 && operand->aregno <= REG_AR7) | |
1435 | break; | |
1436 | ||
20203fb9 | 1437 | as_bad (_("Auxiliary register AR0--AR7 required for indirect")); |
026df7c5 NC |
1438 | return -1; |
1439 | ||
1440 | case 'd': /* Need to match constant for disp. */ | |
be33c5dd | 1441 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 NC |
1442 | if (*s == '%') /* expr() will die if we don't skip this. */ |
1443 | s++; | |
1444 | #endif | |
be33c5dd | 1445 | s = tic4x_expression (s, &operand->expr); |
026df7c5 NC |
1446 | if (operand->expr.X_op != O_constant) |
1447 | return 0; | |
1448 | operand->disp = operand->expr.X_add_number; | |
1449 | if (operand->disp < 0 || operand->disp > 255) | |
1450 | { | |
20203fb9 | 1451 | as_bad (_("Bad displacement %d (require 0--255)\n"), |
026df7c5 NC |
1452 | operand->disp); |
1453 | return -1; | |
1454 | } | |
1455 | break; | |
1456 | ||
1457 | case 'y': /* Need to match IR0. */ | |
1458 | case 'z': /* Need to match IR1. */ | |
be33c5dd | 1459 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 NC |
1460 | if (*s == '%') |
1461 | s++; | |
1462 | #endif | |
be33c5dd | 1463 | s = tic4x_expression (s, &operand->expr); |
026df7c5 NC |
1464 | if (operand->expr.X_op != O_register) |
1465 | return 0; | |
1466 | if (operand->expr.X_add_number != REG_IR0 | |
1467 | && operand->expr.X_add_number != REG_IR1) | |
1468 | { | |
20203fb9 | 1469 | as_bad (_("Index register IR0,IR1 required for displacement")); |
026df7c5 NC |
1470 | return -1; |
1471 | } | |
1472 | ||
1473 | if (*n == 'y' && operand->expr.X_add_number == REG_IR0) | |
1474 | break; | |
1475 | if (*n == 'z' && operand->expr.X_add_number == REG_IR1) | |
1476 | break; | |
1477 | return 0; | |
1478 | ||
1479 | case '(': | |
1480 | if (*s != '(') /* No displacement, assume to be 1. */ | |
1481 | { | |
1482 | operand->disp = 1; | |
1483 | while (*n != ')') | |
1484 | n++; | |
1485 | } | |
1486 | else | |
1487 | s++; | |
1488 | break; | |
1489 | ||
1490 | default: | |
278ed128 | 1491 | if (TOLOWER (*s) != *n) |
026df7c5 NC |
1492 | return 0; |
1493 | s++; | |
1494 | } | |
1495 | } | |
1496 | if (*s != ' ' && *s != ',' && *s != '\0') | |
1497 | return 0; | |
1498 | input_line_pointer = s; | |
1499 | return 1; | |
1500 | } | |
1501 | ||
247b1fe6 | 1502 | static char * |
5a49b8ac | 1503 | tic4x_operand_parse (char *s, tic4x_operand_t *operand) |
026df7c5 NC |
1504 | { |
1505 | unsigned int i; | |
1506 | char c; | |
1507 | int ret; | |
1508 | expressionS *exp = &operand->expr; | |
1509 | char *save = input_line_pointer; | |
1510 | char *str; | |
d3ce72d0 | 1511 | char *new_pointer; |
026df7c5 NC |
1512 | struct hash_entry *entry = NULL; |
1513 | ||
1514 | input_line_pointer = s; | |
1515 | SKIP_WHITESPACE (); | |
1516 | ||
1517 | str = input_line_pointer; | |
1518 | c = get_symbol_end (); /* Get terminator. */ | |
d3ce72d0 | 1519 | new_pointer = input_line_pointer; |
be33c5dd | 1520 | if (strlen (str) && (entry = hash_find (tic4x_asg_hash, str)) != NULL) |
026df7c5 NC |
1521 | { |
1522 | *input_line_pointer = c; | |
1523 | input_line_pointer = (char *) entry; | |
1524 | } | |
1525 | else | |
1526 | { | |
1527 | *input_line_pointer = c; | |
1528 | input_line_pointer = str; | |
1529 | } | |
1530 | ||
1531 | operand->mode = M_UNKNOWN; | |
1532 | switch (*input_line_pointer) | |
1533 | { | |
be33c5dd | 1534 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 | 1535 | case '%': |
be33c5dd | 1536 | input_line_pointer = tic4x_expression (++input_line_pointer, exp); |
026df7c5 | 1537 | if (exp->X_op != O_register) |
20203fb9 | 1538 | as_bad (_("Expecting a register name")); |
026df7c5 NC |
1539 | operand->mode = M_REGISTER; |
1540 | break; | |
1541 | ||
1542 | case '^': | |
1543 | /* Denotes high 16 bits. */ | |
be33c5dd | 1544 | input_line_pointer = tic4x_expression (++input_line_pointer, exp); |
026df7c5 NC |
1545 | if (exp->X_op == O_constant) |
1546 | operand->mode = M_IMMED; | |
1547 | else if (exp->X_op == O_big) | |
1548 | { | |
1549 | if (exp->X_add_number) | |
20203fb9 | 1550 | as_bad (_("Number too large")); /* bignum required */ |
026df7c5 NC |
1551 | else |
1552 | { | |
be33c5dd | 1553 | tic4x_gen_to_words (generic_floating_point_number, |
026df7c5 NC |
1554 | operand->fwords, S_PRECISION); |
1555 | operand->mode = M_IMMED_F; | |
1556 | } | |
1557 | } | |
1558 | /* Allow ori ^foo, ar0 to be equivalent to ldi .hi.foo, ar0 */ | |
1559 | /* WARNING : The TI C40 assembler cannot do this. */ | |
1560 | else if (exp->X_op == O_symbol) | |
1561 | { | |
1562 | operand->mode = M_HI; | |
1563 | break; | |
1564 | } | |
1565 | ||
1566 | case '#': | |
be33c5dd | 1567 | input_line_pointer = tic4x_expression (++input_line_pointer, exp); |
026df7c5 NC |
1568 | if (exp->X_op == O_constant) |
1569 | operand->mode = M_IMMED; | |
1570 | else if (exp->X_op == O_big) | |
1571 | { | |
1572 | if (exp->X_add_number > 0) | |
20203fb9 | 1573 | as_bad (_("Number too large")); /* bignum required. */ |
026df7c5 NC |
1574 | else |
1575 | { | |
be33c5dd | 1576 | tic4x_gen_to_words (generic_floating_point_number, |
026df7c5 NC |
1577 | operand->fwords, S_PRECISION); |
1578 | operand->mode = M_IMMED_F; | |
1579 | } | |
1580 | } | |
1581 | /* Allow ori foo, ar0 to be equivalent to ldi .lo.foo, ar0 */ | |
1582 | /* WARNING : The TI C40 assembler cannot do this. */ | |
1583 | else if (exp->X_op == O_symbol) | |
1584 | { | |
1585 | operand->mode = M_IMMED; | |
1586 | break; | |
1587 | } | |
1588 | ||
1589 | else | |
20203fb9 | 1590 | as_bad (_("Expecting a constant value")); |
026df7c5 NC |
1591 | break; |
1592 | case '\\': | |
1593 | #endif | |
1594 | case '@': | |
be33c5dd | 1595 | input_line_pointer = tic4x_expression (++input_line_pointer, exp); |
026df7c5 | 1596 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
20203fb9 | 1597 | as_bad (_("Bad direct addressing construct %s"), s); |
026df7c5 NC |
1598 | if (exp->X_op == O_constant) |
1599 | { | |
1600 | if (exp->X_add_number < 0) | |
20203fb9 | 1601 | as_bad (_("Direct value of %ld is not suitable"), |
026df7c5 NC |
1602 | (long) exp->X_add_number); |
1603 | } | |
1604 | operand->mode = M_DIRECT; | |
1605 | break; | |
1606 | ||
1607 | case '*': | |
1608 | ret = -1; | |
be33c5dd SS |
1609 | for (i = 0; i < tic4x_num_indirects; i++) |
1610 | if ((ret = tic4x_indirect_parse (operand, &tic4x_indirects[i]))) | |
026df7c5 NC |
1611 | break; |
1612 | if (ret < 0) | |
1613 | break; | |
be33c5dd | 1614 | if (i < tic4x_num_indirects) |
026df7c5 NC |
1615 | { |
1616 | operand->mode = M_INDIRECT; | |
1617 | /* Indirect addressing mode number. */ | |
be33c5dd | 1618 | operand->expr.X_add_number = tic4x_indirects[i].modn; |
026df7c5 NC |
1619 | /* Convert *+ARn(0) to *ARn etc. Maybe we should |
1620 | squeal about silly ones? */ | |
1621 | if (operand->expr.X_add_number < 0x08 && !operand->disp) | |
1622 | operand->expr.X_add_number = 0x18; | |
1623 | } | |
1624 | else | |
20203fb9 | 1625 | as_bad (_("Unknown indirect addressing mode")); |
026df7c5 NC |
1626 | break; |
1627 | ||
1628 | default: | |
1629 | operand->mode = M_IMMED; /* Assume immediate. */ | |
1630 | str = input_line_pointer; | |
be33c5dd | 1631 | input_line_pointer = tic4x_expression (input_line_pointer, exp); |
026df7c5 NC |
1632 | if (exp->X_op == O_register) |
1633 | { | |
1634 | know (exp->X_add_symbol == 0); | |
1635 | know (exp->X_op_symbol == 0); | |
1636 | operand->mode = M_REGISTER; | |
1637 | break; | |
1638 | } | |
1639 | else if (exp->X_op == O_big) | |
1640 | { | |
1641 | if (exp->X_add_number > 0) | |
20203fb9 | 1642 | as_bad (_("Number too large")); /* bignum required. */ |
026df7c5 NC |
1643 | else |
1644 | { | |
be33c5dd | 1645 | tic4x_gen_to_words (generic_floating_point_number, |
026df7c5 NC |
1646 | operand->fwords, S_PRECISION); |
1647 | operand->mode = M_IMMED_F; | |
1648 | } | |
1649 | break; | |
1650 | } | |
be33c5dd | 1651 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 NC |
1652 | /* Allow ldi foo, ar0 to be equivalent to ldi @foo, ar0. */ |
1653 | else if (exp->X_op == O_symbol) | |
1654 | { | |
1655 | operand->mode = M_DIRECT; | |
1656 | break; | |
1657 | } | |
1658 | #endif | |
1659 | } | |
1660 | if (entry == NULL) | |
d3ce72d0 | 1661 | new_pointer = input_line_pointer; |
026df7c5 | 1662 | input_line_pointer = save; |
d3ce72d0 | 1663 | return new_pointer; |
026df7c5 NC |
1664 | } |
1665 | ||
1666 | static int | |
91d6fa6a | 1667 | tic4x_operands_match (tic4x_inst_t *inst, tic4x_insn_t *tinsn, int check) |
026df7c5 NC |
1668 | { |
1669 | const char *args = inst->args; | |
1670 | unsigned long opcode = inst->opcode; | |
91d6fa6a NC |
1671 | int num_operands = tinsn->num_operands; |
1672 | tic4x_operand_t *operand = tinsn->operands; | |
026df7c5 NC |
1673 | expressionS *exp = &operand->expr; |
1674 | int ret = 1; | |
1675 | int reg; | |
1676 | ||
1677 | /* Build the opcode, checking as we go to make sure that the | |
1678 | operands match. | |
1679 | ||
1680 | If an operand matches, we modify insn or opcode appropriately, | |
1681 | and do a "continue". If an operand fails to match, we "break". */ | |
1682 | ||
91d6fa6a NC |
1683 | tinsn->nchars = 4; /* Instructions always 4 bytes. */ |
1684 | tinsn->reloc = NO_RELOC; | |
1685 | tinsn->pcrel = 0; | |
026df7c5 NC |
1686 | |
1687 | if (*args == '\0') | |
1688 | { | |
91d6fa6a | 1689 | tinsn->opcode = opcode; |
026df7c5 NC |
1690 | return num_operands == 0; |
1691 | } | |
1692 | ||
1693 | for (;; ++args) | |
1694 | { | |
1695 | switch (*args) | |
1696 | { | |
1697 | ||
1698 | case '\0': /* End of args. */ | |
1699 | if (num_operands == 1) | |
1700 | { | |
91d6fa6a | 1701 | tinsn->opcode = opcode; |
026df7c5 NC |
1702 | return ret; |
1703 | } | |
1704 | break; /* Too many operands. */ | |
1705 | ||
1706 | case '#': /* This is only used for ldp. */ | |
1707 | if (operand->mode != M_DIRECT && operand->mode != M_IMMED) | |
1708 | break; | |
1709 | /* While this looks like a direct addressing mode, we actually | |
1710 | use an immediate mode form of ldiu or ldpk instruction. */ | |
1711 | if (exp->X_op == O_constant) | |
1712 | { | |
be33c5dd SS |
1713 | if( ( IS_CPU_TIC4X (tic4x_cpu) && exp->X_add_number <= 65535 ) |
1714 | || ( IS_CPU_TIC3X (tic4x_cpu) && exp->X_add_number <= 255 ) ) | |
44287f60 SS |
1715 | { |
1716 | INSERTS (opcode, exp->X_add_number, 15, 0); | |
1717 | continue; | |
1718 | } | |
1719 | else | |
1720 | { | |
9c87d6c7 | 1721 | if (!check) |
20203fb9 | 1722 | as_bad (_("Immediate value of %ld is too large for ldf"), |
9c87d6c7 | 1723 | (long) exp->X_add_number); |
44287f60 SS |
1724 | ret = -1; |
1725 | continue; | |
1726 | } | |
026df7c5 NC |
1727 | } |
1728 | else if (exp->X_op == O_symbol) | |
1729 | { | |
91d6fa6a NC |
1730 | tinsn->reloc = BFD_RELOC_HI16; |
1731 | tinsn->exp = *exp; | |
026df7c5 NC |
1732 | continue; |
1733 | } | |
1734 | break; /* Not direct (dp) addressing. */ | |
1735 | ||
1736 | case '@': /* direct. */ | |
1737 | if (operand->mode != M_DIRECT) | |
1738 | break; | |
1739 | if (exp->X_op == O_constant) | |
da91385d SS |
1740 | { |
1741 | /* Store only the 16 LSBs of the number. */ | |
1742 | INSERTS (opcode, exp->X_add_number, 15, 0); | |
1743 | continue; | |
026df7c5 NC |
1744 | } |
1745 | else if (exp->X_op == O_symbol) | |
1746 | { | |
91d6fa6a NC |
1747 | tinsn->reloc = BFD_RELOC_LO16; |
1748 | tinsn->exp = *exp; | |
026df7c5 NC |
1749 | continue; |
1750 | } | |
1751 | break; /* Not direct addressing. */ | |
1752 | ||
1753 | case 'A': | |
1754 | if (operand->mode != M_REGISTER) | |
1755 | break; | |
1756 | reg = exp->X_add_number; | |
1757 | if (reg >= REG_AR0 && reg <= REG_AR7) | |
1758 | INSERTU (opcode, reg - REG_AR0, 24, 22); | |
1759 | else | |
1760 | { | |
9c87d6c7 | 1761 | if (!check) |
20203fb9 | 1762 | as_bad (_("Destination register must be ARn")); |
026df7c5 NC |
1763 | ret = -1; |
1764 | } | |
1765 | continue; | |
1766 | ||
1767 | case 'B': /* Unsigned integer immediate. */ | |
1768 | /* Allow br label or br @label. */ | |
1769 | if (operand->mode != M_IMMED && operand->mode != M_DIRECT) | |
1770 | break; | |
1771 | if (exp->X_op == O_constant) | |
1772 | { | |
1773 | if (exp->X_add_number < (1 << 24)) | |
1774 | { | |
1775 | INSERTU (opcode, exp->X_add_number, 23, 0); | |
1776 | continue; | |
1777 | } | |
1778 | else | |
1779 | { | |
9c87d6c7 | 1780 | if (!check) |
20203fb9 | 1781 | as_bad (_("Immediate value of %ld is too large"), |
9c87d6c7 | 1782 | (long) exp->X_add_number); |
026df7c5 NC |
1783 | ret = -1; |
1784 | continue; | |
1785 | } | |
1786 | } | |
be33c5dd | 1787 | if (IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 | 1788 | { |
91d6fa6a NC |
1789 | tinsn->reloc = BFD_RELOC_24_PCREL; |
1790 | tinsn->pcrel = 1; | |
026df7c5 NC |
1791 | } |
1792 | else | |
1793 | { | |
91d6fa6a NC |
1794 | tinsn->reloc = BFD_RELOC_24; |
1795 | tinsn->pcrel = 0; | |
026df7c5 | 1796 | } |
91d6fa6a | 1797 | tinsn->exp = *exp; |
026df7c5 NC |
1798 | continue; |
1799 | ||
1800 | case 'C': | |
be33c5dd | 1801 | if (!IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 NC |
1802 | break; |
1803 | if (operand->mode != M_INDIRECT) | |
1804 | break; | |
44287f60 | 1805 | /* Require either *+ARn(disp) or *ARn. */ |
026df7c5 NC |
1806 | if (operand->expr.X_add_number != 0 |
1807 | && operand->expr.X_add_number != 0x18) | |
1808 | { | |
9c87d6c7 | 1809 | if (!check) |
20203fb9 | 1810 | as_bad (_("Invalid indirect addressing mode")); |
9c87d6c7 | 1811 | ret = -1; |
026df7c5 NC |
1812 | continue; |
1813 | } | |
1814 | INSERTU (opcode, operand->aregno - REG_AR0, 2, 0); | |
1815 | INSERTU (opcode, operand->disp, 7, 3); | |
1816 | continue; | |
1817 | ||
1818 | case 'E': | |
1819 | if (!(operand->mode == M_REGISTER)) | |
1820 | break; | |
1821 | INSERTU (opcode, exp->X_add_number, 7, 0); | |
1822 | continue; | |
1823 | ||
44287f60 SS |
1824 | case 'e': |
1825 | if (!(operand->mode == M_REGISTER)) | |
1826 | break; | |
1827 | reg = exp->X_add_number; | |
1828 | if ( (reg >= REG_R0 && reg <= REG_R7) | |
be33c5dd | 1829 | || (IS_CPU_TIC4X (tic4x_cpu) && reg >= REG_R8 && reg <= REG_R11) ) |
44287f60 SS |
1830 | INSERTU (opcode, reg, 7, 0); |
1831 | else | |
1832 | { | |
9c87d6c7 | 1833 | if (!check) |
20203fb9 | 1834 | as_bad (_("Register must be Rn")); |
44287f60 SS |
1835 | ret = -1; |
1836 | } | |
1837 | continue; | |
1838 | ||
026df7c5 NC |
1839 | case 'F': |
1840 | if (operand->mode != M_IMMED_F | |
1841 | && !(operand->mode == M_IMMED && exp->X_op == O_constant)) | |
1842 | break; | |
1843 | ||
1844 | if (operand->mode != M_IMMED_F) | |
1845 | { | |
1846 | /* OK, we 've got something like cmpf 0, r0 | |
1847 | Why can't they stick in a bloody decimal point ?! */ | |
1848 | char string[16]; | |
1849 | ||
1850 | /* Create floating point number string. */ | |
1851 | sprintf (string, "%d.0", (int) exp->X_add_number); | |
be33c5dd | 1852 | tic4x_atof (string, 's', operand->fwords); |
026df7c5 NC |
1853 | } |
1854 | ||
1855 | INSERTU (opcode, operand->fwords[0], 15, 0); | |
1856 | continue; | |
1857 | ||
1858 | case 'G': | |
1859 | if (operand->mode != M_REGISTER) | |
1860 | break; | |
1861 | INSERTU (opcode, exp->X_add_number, 15, 8); | |
1862 | continue; | |
1863 | ||
44287f60 SS |
1864 | case 'g': |
1865 | if (operand->mode != M_REGISTER) | |
1866 | break; | |
1867 | reg = exp->X_add_number; | |
1868 | if ( (reg >= REG_R0 && reg <= REG_R7) | |
be33c5dd | 1869 | || (IS_CPU_TIC4X (tic4x_cpu) && reg >= REG_R8 && reg <= REG_R11) ) |
44287f60 SS |
1870 | INSERTU (opcode, reg, 15, 8); |
1871 | else | |
1872 | { | |
9c87d6c7 | 1873 | if (!check) |
20203fb9 | 1874 | as_bad (_("Register must be Rn")); |
44287f60 SS |
1875 | ret = -1; |
1876 | } | |
1877 | continue; | |
1878 | ||
026df7c5 NC |
1879 | case 'H': |
1880 | if (operand->mode != M_REGISTER) | |
1881 | break; | |
1882 | reg = exp->X_add_number; | |
1883 | if (reg >= REG_R0 && reg <= REG_R7) | |
1884 | INSERTU (opcode, reg - REG_R0, 18, 16); | |
1885 | else | |
1886 | { | |
9c87d6c7 | 1887 | if (!check) |
20203fb9 | 1888 | as_bad (_("Register must be R0--R7")); |
026df7c5 NC |
1889 | ret = -1; |
1890 | } | |
1891 | continue; | |
1892 | ||
9c87d6c7 SS |
1893 | case 'i': |
1894 | if ( operand->mode == M_REGISTER | |
be33c5dd | 1895 | && tic4x_oplevel & OP_ENH ) |
9c87d6c7 SS |
1896 | { |
1897 | reg = exp->X_add_number; | |
1898 | INSERTU (opcode, reg, 4, 0); | |
1899 | INSERTU (opcode, 7, 7, 5); | |
1900 | continue; | |
1901 | } | |
1902 | /* Fallthrough */ | |
1903 | ||
026df7c5 NC |
1904 | case 'I': |
1905 | if (operand->mode != M_INDIRECT) | |
1906 | break; | |
1907 | if (operand->disp != 0 && operand->disp != 1) | |
1908 | { | |
be33c5dd | 1909 | if (IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 | 1910 | break; |
9c87d6c7 | 1911 | if (!check) |
20203fb9 | 1912 | as_bad (_("Invalid indirect addressing mode displacement %d"), |
9c87d6c7 | 1913 | operand->disp); |
026df7c5 NC |
1914 | ret = -1; |
1915 | continue; | |
1916 | } | |
1917 | INSERTU (opcode, operand->aregno - REG_AR0, 2, 0); | |
1918 | INSERTU (opcode, operand->expr.X_add_number, 7, 3); | |
1919 | continue; | |
1920 | ||
9c87d6c7 SS |
1921 | case 'j': |
1922 | if ( operand->mode == M_REGISTER | |
be33c5dd | 1923 | && tic4x_oplevel & OP_ENH ) |
9c87d6c7 SS |
1924 | { |
1925 | reg = exp->X_add_number; | |
1926 | INSERTU (opcode, reg, 12, 8); | |
1927 | INSERTU (opcode, 7, 15, 13); | |
1928 | continue; | |
1929 | } | |
1930 | /* Fallthrough */ | |
1931 | ||
026df7c5 NC |
1932 | case 'J': |
1933 | if (operand->mode != M_INDIRECT) | |
1934 | break; | |
1935 | if (operand->disp != 0 && operand->disp != 1) | |
1936 | { | |
be33c5dd | 1937 | if (IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 | 1938 | break; |
9c87d6c7 | 1939 | if (!check) |
20203fb9 | 1940 | as_bad (_("Invalid indirect addressing mode displacement %d"), |
9c87d6c7 | 1941 | operand->disp); |
026df7c5 NC |
1942 | ret = -1; |
1943 | continue; | |
1944 | } | |
1945 | INSERTU (opcode, operand->aregno - REG_AR0, 10, 8); | |
1946 | INSERTU (opcode, operand->expr.X_add_number, 15, 11); | |
1947 | continue; | |
1948 | ||
1949 | case 'K': | |
1950 | if (operand->mode != M_REGISTER) | |
1951 | break; | |
1952 | reg = exp->X_add_number; | |
1953 | if (reg >= REG_R0 && reg <= REG_R7) | |
1954 | INSERTU (opcode, reg - REG_R0, 21, 19); | |
1955 | else | |
1956 | { | |
9c87d6c7 | 1957 | if (!check) |
20203fb9 | 1958 | as_bad (_("Register must be R0--R7")); |
026df7c5 NC |
1959 | ret = -1; |
1960 | } | |
1961 | continue; | |
1962 | ||
1963 | case 'L': | |
1964 | if (operand->mode != M_REGISTER) | |
1965 | break; | |
1966 | reg = exp->X_add_number; | |
1967 | if (reg >= REG_R0 && reg <= REG_R7) | |
1968 | INSERTU (opcode, reg - REG_R0, 24, 22); | |
1969 | else | |
1970 | { | |
9c87d6c7 | 1971 | if (!check) |
20203fb9 | 1972 | as_bad (_("Register must be R0--R7")); |
026df7c5 NC |
1973 | ret = -1; |
1974 | } | |
1975 | continue; | |
1976 | ||
1977 | case 'M': | |
1978 | if (operand->mode != M_REGISTER) | |
1979 | break; | |
1980 | reg = exp->X_add_number; | |
1981 | if (reg == REG_R2 || reg == REG_R3) | |
1982 | INSERTU (opcode, reg - REG_R2, 22, 22); | |
1983 | else | |
1984 | { | |
9c87d6c7 | 1985 | if (!check) |
20203fb9 | 1986 | as_bad (_("Destination register must be R2 or R3")); |
026df7c5 NC |
1987 | ret = -1; |
1988 | } | |
1989 | continue; | |
1990 | ||
1991 | case 'N': | |
1992 | if (operand->mode != M_REGISTER) | |
1993 | break; | |
1994 | reg = exp->X_add_number; | |
1995 | if (reg == REG_R0 || reg == REG_R1) | |
1996 | INSERTU (opcode, reg - REG_R0, 23, 23); | |
1997 | else | |
1998 | { | |
9c87d6c7 | 1999 | if (!check) |
20203fb9 | 2000 | as_bad (_("Destination register must be R0 or R1")); |
026df7c5 NC |
2001 | ret = -1; |
2002 | } | |
2003 | continue; | |
2004 | ||
2005 | case 'O': | |
be33c5dd | 2006 | if (!IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 NC |
2007 | break; |
2008 | if (operand->mode != M_INDIRECT) | |
2009 | break; | |
2010 | /* Require either *+ARn(disp) or *ARn. */ | |
2011 | if (operand->expr.X_add_number != 0 | |
2012 | && operand->expr.X_add_number != 0x18) | |
2013 | { | |
9c87d6c7 | 2014 | if (!check) |
20203fb9 | 2015 | as_bad (_("Invalid indirect addressing mode")); |
026df7c5 NC |
2016 | ret = -1; |
2017 | continue; | |
2018 | } | |
2019 | INSERTU (opcode, operand->aregno - REG_AR0, 10, 8); | |
2020 | INSERTU (opcode, operand->disp, 15, 11); | |
2021 | continue; | |
2022 | ||
2023 | case 'P': /* PC relative displacement. */ | |
2024 | /* Allow br label or br @label. */ | |
2025 | if (operand->mode != M_IMMED && operand->mode != M_DIRECT) | |
2026 | break; | |
2027 | if (exp->X_op == O_constant) | |
2028 | { | |
2029 | if (exp->X_add_number >= -32768 && exp->X_add_number <= 32767) | |
2030 | { | |
2031 | INSERTS (opcode, exp->X_add_number, 15, 0); | |
2032 | continue; | |
2033 | } | |
2034 | else | |
2035 | { | |
9c87d6c7 | 2036 | if (!check) |
20203fb9 | 2037 | as_bad (_("Displacement value of %ld is too large"), |
9c87d6c7 | 2038 | (long) exp->X_add_number); |
026df7c5 NC |
2039 | ret = -1; |
2040 | continue; | |
2041 | } | |
2042 | } | |
91d6fa6a NC |
2043 | tinsn->reloc = BFD_RELOC_16_PCREL; |
2044 | tinsn->pcrel = 1; | |
2045 | tinsn->exp = *exp; | |
026df7c5 NC |
2046 | continue; |
2047 | ||
2048 | case 'Q': | |
2049 | if (operand->mode != M_REGISTER) | |
2050 | break; | |
2051 | reg = exp->X_add_number; | |
2052 | INSERTU (opcode, reg, 15, 0); | |
2053 | continue; | |
2054 | ||
44287f60 SS |
2055 | case 'q': |
2056 | if (operand->mode != M_REGISTER) | |
2057 | break; | |
2058 | reg = exp->X_add_number; | |
2059 | if ( (reg >= REG_R0 && reg <= REG_R7) | |
be33c5dd | 2060 | || (IS_CPU_TIC4X (tic4x_cpu) && reg >= REG_R8 && reg <= REG_R11) ) |
44287f60 SS |
2061 | INSERTU (opcode, reg, 15, 0); |
2062 | else | |
2063 | { | |
9c87d6c7 | 2064 | if (!check) |
20203fb9 | 2065 | as_bad (_("Register must be Rn")); |
44287f60 SS |
2066 | ret = -1; |
2067 | } | |
2068 | continue; | |
2069 | ||
026df7c5 NC |
2070 | case 'R': |
2071 | if (operand->mode != M_REGISTER) | |
2072 | break; | |
2073 | reg = exp->X_add_number; | |
2074 | INSERTU (opcode, reg, 20, 16); | |
2075 | continue; | |
2076 | ||
44287f60 SS |
2077 | case 'r': |
2078 | if (operand->mode != M_REGISTER) | |
2079 | break; | |
2080 | reg = exp->X_add_number; | |
2081 | if ( (reg >= REG_R0 && reg <= REG_R7) | |
be33c5dd | 2082 | || (IS_CPU_TIC4X (tic4x_cpu) && reg >= REG_R8 && reg <= REG_R11) ) |
44287f60 SS |
2083 | INSERTU (opcode, reg, 20, 16); |
2084 | else | |
2085 | { | |
9c87d6c7 | 2086 | if (!check) |
20203fb9 | 2087 | as_bad (_("Register must be Rn")); |
44287f60 SS |
2088 | ret = -1; |
2089 | } | |
2090 | continue; | |
2091 | ||
026df7c5 NC |
2092 | case 'S': /* Short immediate int. */ |
2093 | if (operand->mode != M_IMMED && operand->mode != M_HI) | |
2094 | break; | |
2095 | if (exp->X_op == O_big) | |
2096 | { | |
9c87d6c7 | 2097 | if (!check) |
20203fb9 | 2098 | as_bad (_("Floating point number not valid in expression")); |
026df7c5 NC |
2099 | ret = -1; |
2100 | continue; | |
2101 | } | |
2102 | if (exp->X_op == O_constant) | |
2103 | { | |
2104 | if (exp->X_add_number >= -32768 && exp->X_add_number <= 65535) | |
2105 | { | |
2106 | INSERTS (opcode, exp->X_add_number, 15, 0); | |
2107 | continue; | |
2108 | } | |
2109 | else | |
2110 | { | |
9c87d6c7 | 2111 | if (!check) |
20203fb9 | 2112 | as_bad (_("Signed immediate value %ld too large"), |
9c87d6c7 | 2113 | (long) exp->X_add_number); |
026df7c5 NC |
2114 | ret = -1; |
2115 | continue; | |
2116 | } | |
2117 | } | |
2118 | else if (exp->X_op == O_symbol) | |
2119 | { | |
2120 | if (operand->mode == M_HI) | |
2121 | { | |
91d6fa6a | 2122 | tinsn->reloc = BFD_RELOC_HI16; |
026df7c5 NC |
2123 | } |
2124 | else | |
2125 | { | |
91d6fa6a | 2126 | tinsn->reloc = BFD_RELOC_LO16; |
026df7c5 | 2127 | } |
91d6fa6a | 2128 | tinsn->exp = *exp; |
026df7c5 NC |
2129 | continue; |
2130 | } | |
2131 | /* Handle cases like ldi foo - $, ar0 where foo | |
2132 | is a forward reference. Perhaps we should check | |
2133 | for X_op == O_symbol and disallow things like | |
2134 | ldi foo, ar0. */ | |
91d6fa6a NC |
2135 | tinsn->reloc = BFD_RELOC_16; |
2136 | tinsn->exp = *exp; | |
026df7c5 NC |
2137 | continue; |
2138 | ||
be33c5dd SS |
2139 | case 'T': /* 5-bit immediate value for tic4x stik. */ |
2140 | if (!IS_CPU_TIC4X (tic4x_cpu)) | |
026df7c5 NC |
2141 | break; |
2142 | if (operand->mode != M_IMMED) | |
2143 | break; | |
2144 | if (exp->X_op == O_constant) | |
2145 | { | |
2146 | if (exp->X_add_number < 16 && exp->X_add_number >= -16) | |
2147 | { | |
2148 | INSERTS (opcode, exp->X_add_number, 20, 16); | |
2149 | continue; | |
2150 | } | |
2151 | else | |
2152 | { | |
9c87d6c7 | 2153 | if (!check) |
20203fb9 | 2154 | as_bad (_("Immediate value of %ld is too large"), |
9c87d6c7 | 2155 | (long) exp->X_add_number); |
026df7c5 NC |
2156 | ret = -1; |
2157 | continue; | |
2158 | } | |
2159 | } | |
2160 | break; /* No relocations allowed. */ | |
2161 | ||
2162 | case 'U': /* Unsigned integer immediate. */ | |
2163 | if (operand->mode != M_IMMED && operand->mode != M_HI) | |
2164 | break; | |
2165 | if (exp->X_op == O_constant) | |
2166 | { | |
2167 | if (exp->X_add_number < (1 << 16) && exp->X_add_number >= 0) | |
2168 | { | |
2169 | INSERTU (opcode, exp->X_add_number, 15, 0); | |
2170 | continue; | |
2171 | } | |
2172 | else | |
2173 | { | |
9c87d6c7 | 2174 | if (!check) |
20203fb9 | 2175 | as_bad (_("Unsigned immediate value %ld too large"), |
9c87d6c7 | 2176 | (long) exp->X_add_number); |
026df7c5 NC |
2177 | ret = -1; |
2178 | continue; | |
2179 | } | |
2180 | } | |
2181 | else if (exp->X_op == O_symbol) | |
2182 | { | |
2183 | if (operand->mode == M_HI) | |
91d6fa6a | 2184 | tinsn->reloc = BFD_RELOC_HI16; |
026df7c5 | 2185 | else |
91d6fa6a | 2186 | tinsn->reloc = BFD_RELOC_LO16; |
026df7c5 | 2187 | |
91d6fa6a | 2188 | tinsn->exp = *exp; |
026df7c5 NC |
2189 | continue; |
2190 | } | |
91d6fa6a NC |
2191 | tinsn->reloc = BFD_RELOC_16; |
2192 | tinsn->exp = *exp; | |
026df7c5 NC |
2193 | continue; |
2194 | ||
2195 | case 'V': /* Trap numbers (immediate field). */ | |
2196 | if (operand->mode != M_IMMED) | |
2197 | break; | |
2198 | if (exp->X_op == O_constant) | |
2199 | { | |
be33c5dd | 2200 | if (exp->X_add_number < 512 && IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 NC |
2201 | { |
2202 | INSERTU (opcode, exp->X_add_number, 8, 0); | |
2203 | continue; | |
2204 | } | |
be33c5dd | 2205 | else if (exp->X_add_number < 32 && IS_CPU_TIC3X (tic4x_cpu)) |
026df7c5 NC |
2206 | { |
2207 | INSERTU (opcode, exp->X_add_number | 0x20, 4, 0); | |
2208 | continue; | |
2209 | } | |
2210 | else | |
2211 | { | |
9c87d6c7 | 2212 | if (!check) |
20203fb9 | 2213 | as_bad (_("Immediate value of %ld is too large"), |
9c87d6c7 | 2214 | (long) exp->X_add_number); |
026df7c5 NC |
2215 | ret = -1; |
2216 | continue; | |
2217 | } | |
2218 | } | |
2219 | break; /* No relocations allowed. */ | |
2220 | ||
2221 | case 'W': /* Short immediate int (0--7). */ | |
be33c5dd | 2222 | if (!IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 NC |
2223 | break; |
2224 | if (operand->mode != M_IMMED) | |
2225 | break; | |
2226 | if (exp->X_op == O_big) | |
2227 | { | |
9c87d6c7 | 2228 | if (!check) |
20203fb9 | 2229 | as_bad (_("Floating point number not valid in expression")); |
026df7c5 NC |
2230 | ret = -1; |
2231 | continue; | |
2232 | } | |
2233 | if (exp->X_op == O_constant) | |
2234 | { | |
2235 | if (exp->X_add_number >= -256 && exp->X_add_number <= 127) | |
2236 | { | |
2237 | INSERTS (opcode, exp->X_add_number, 7, 0); | |
2238 | continue; | |
2239 | } | |
2240 | else | |
2241 | { | |
9c87d6c7 | 2242 | if (!check) |
20203fb9 | 2243 | as_bad (_("Immediate value %ld too large"), |
9c87d6c7 | 2244 | (long) exp->X_add_number); |
026df7c5 NC |
2245 | ret = -1; |
2246 | continue; | |
2247 | } | |
2248 | } | |
91d6fa6a NC |
2249 | tinsn->reloc = BFD_RELOC_16; |
2250 | tinsn->exp = *exp; | |
026df7c5 NC |
2251 | continue; |
2252 | ||
be33c5dd | 2253 | case 'X': /* Expansion register for tic4x. */ |
026df7c5 NC |
2254 | if (operand->mode != M_REGISTER) |
2255 | break; | |
2256 | reg = exp->X_add_number; | |
2257 | if (reg >= REG_IVTP && reg <= REG_TVTP) | |
2258 | INSERTU (opcode, reg - REG_IVTP, 4, 0); | |
2259 | else | |
2260 | { | |
9c87d6c7 | 2261 | if (!check) |
20203fb9 | 2262 | as_bad (_("Register must be ivtp or tvtp")); |
026df7c5 NC |
2263 | ret = -1; |
2264 | } | |
2265 | continue; | |
2266 | ||
be33c5dd | 2267 | case 'Y': /* Address register for tic4x lda. */ |
026df7c5 NC |
2268 | if (operand->mode != M_REGISTER) |
2269 | break; | |
2270 | reg = exp->X_add_number; | |
2271 | if (reg >= REG_AR0 && reg <= REG_SP) | |
2272 | INSERTU (opcode, reg, 20, 16); | |
2273 | else | |
2274 | { | |
9c87d6c7 | 2275 | if (!check) |
20203fb9 | 2276 | as_bad (_("Register must be address register")); |
026df7c5 NC |
2277 | ret = -1; |
2278 | } | |
2279 | continue; | |
2280 | ||
be33c5dd | 2281 | case 'Z': /* Expansion register for tic4x. */ |
026df7c5 NC |
2282 | if (operand->mode != M_REGISTER) |
2283 | break; | |
2284 | reg = exp->X_add_number; | |
2285 | if (reg >= REG_IVTP && reg <= REG_TVTP) | |
2286 | INSERTU (opcode, reg - REG_IVTP, 20, 16); | |
2287 | else | |
2288 | { | |
9c87d6c7 | 2289 | if (!check) |
20203fb9 | 2290 | as_bad (_("Register must be ivtp or tvtp")); |
026df7c5 NC |
2291 | ret = -1; |
2292 | } | |
2293 | continue; | |
2294 | ||
2295 | case '*': | |
2296 | if (operand->mode != M_INDIRECT) | |
2297 | break; | |
2298 | INSERTS (opcode, operand->disp, 7, 0); | |
2299 | INSERTU (opcode, operand->aregno - REG_AR0, 10, 8); | |
2300 | INSERTU (opcode, operand->expr.X_add_number, 15, 11); | |
2301 | continue; | |
2302 | ||
2303 | case '|': /* treat as `,' if have ldi_ldi form. */ | |
91d6fa6a | 2304 | if (tinsn->parallel) |
026df7c5 NC |
2305 | { |
2306 | if (--num_operands < 0) | |
2307 | break; /* Too few operands. */ | |
2308 | operand++; | |
2309 | if (operand->mode != M_PARALLEL) | |
2310 | break; | |
2311 | } | |
2312 | /* Fall through. */ | |
2313 | ||
2314 | case ',': /* Another operand. */ | |
2315 | if (--num_operands < 0) | |
2316 | break; /* Too few operands. */ | |
2317 | operand++; | |
2318 | exp = &operand->expr; | |
2319 | continue; | |
2320 | ||
2321 | case ';': /* Another optional operand. */ | |
2322 | if (num_operands == 1 || operand[1].mode == M_PARALLEL) | |
2323 | continue; | |
2324 | if (--num_operands < 0) | |
2325 | break; /* Too few operands. */ | |
2326 | operand++; | |
2327 | exp = &operand->expr; | |
2328 | continue; | |
2329 | ||
2330 | default: | |
2331 | BAD_CASE (*args); | |
2332 | } | |
2333 | return 0; | |
2334 | } | |
2335 | } | |
2336 | ||
9c87d6c7 | 2337 | static void |
91d6fa6a | 2338 | tic4x_insn_check (tic4x_insn_t *tinsn) |
9c87d6c7 SS |
2339 | { |
2340 | ||
91d6fa6a | 2341 | if (!strcmp (tinsn->name, "lda")) |
9c87d6c7 | 2342 | { |
91d6fa6a | 2343 | if (tinsn->num_operands < 2 || tinsn->num_operands > 2) |
9c87d6c7 SS |
2344 | as_fatal ("Illegal internal LDA insn definition"); |
2345 | ||
91d6fa6a NC |
2346 | if (tinsn->operands[0].mode == M_REGISTER |
2347 | && tinsn->operands[1].mode == M_REGISTER | |
2348 | && tinsn->operands[0].expr.X_add_number == tinsn->operands[1].expr.X_add_number ) | |
20203fb9 | 2349 | as_bad (_("Source and destination register should not be equal")); |
9c87d6c7 | 2350 | } |
91d6fa6a NC |
2351 | else if (!strcmp (tinsn->name, "ldi_ldi") |
2352 | || !strcmp (tinsn->name, "ldi1_ldi2") | |
2353 | || !strcmp (tinsn->name, "ldi2_ldi1") | |
2354 | || !strcmp (tinsn->name, "ldf_ldf") | |
2355 | || !strcmp (tinsn->name, "ldf1_ldf2") | |
2356 | || !strcmp (tinsn->name, "ldf2_ldf1") ) | |
9c87d6c7 | 2357 | { |
91d6fa6a NC |
2358 | if (tinsn->num_operands < 4 && tinsn->num_operands > 5 ) |
2359 | as_fatal ("Illegal internal %s insn definition", tinsn->name); | |
9c87d6c7 | 2360 | |
91d6fa6a NC |
2361 | if (tinsn->operands[1].mode == M_REGISTER |
2362 | && tinsn->operands[tinsn->num_operands-1].mode == M_REGISTER | |
2363 | && tinsn->operands[1].expr.X_add_number == tinsn->operands[tinsn->num_operands-1].expr.X_add_number ) | |
20203fb9 | 2364 | as_warn (_("Equal parallell destination registers, one result will be discarded")); |
9c87d6c7 SS |
2365 | } |
2366 | } | |
2367 | ||
247b1fe6 | 2368 | static void |
91d6fa6a | 2369 | tic4x_insn_output (tic4x_insn_t *tinsn) |
026df7c5 NC |
2370 | { |
2371 | char *dst; | |
2372 | ||
2373 | /* Grab another fragment for opcode. */ | |
91d6fa6a | 2374 | dst = frag_more (tinsn->nchars); |
026df7c5 NC |
2375 | |
2376 | /* Put out opcode word as a series of bytes in little endian order. */ | |
91d6fa6a | 2377 | md_number_to_chars (dst, tinsn->opcode, tinsn->nchars); |
026df7c5 NC |
2378 | |
2379 | /* Put out the symbol-dependent stuff. */ | |
91d6fa6a | 2380 | if (tinsn->reloc != NO_RELOC) |
026df7c5 NC |
2381 | { |
2382 | /* Where is the offset into the fragment for this instruction. */ | |
2383 | fix_new_exp (frag_now, | |
2384 | dst - frag_now->fr_literal, /* where */ | |
91d6fa6a NC |
2385 | tinsn->nchars, /* size */ |
2386 | &tinsn->exp, | |
2387 | tinsn->pcrel, | |
2388 | tinsn->reloc); | |
026df7c5 NC |
2389 | } |
2390 | } | |
2391 | ||
2392 | /* Parse the operands. */ | |
4e96a12e | 2393 | static int |
5a49b8ac | 2394 | tic4x_operands_parse (char *s, tic4x_operand_t *operands, int num_operands) |
026df7c5 NC |
2395 | { |
2396 | if (!*s) | |
2397 | return num_operands; | |
2398 | ||
2399 | do | |
be33c5dd SS |
2400 | s = tic4x_operand_parse (s, &operands[num_operands++]); |
2401 | while (num_operands < TIC4X_OPERANDS_MAX && *s++ == ','); | |
026df7c5 | 2402 | |
be33c5dd | 2403 | if (num_operands > TIC4X_OPERANDS_MAX) |
026df7c5 | 2404 | { |
20203fb9 | 2405 | as_bad (_("Too many operands scanned")); |
026df7c5 NC |
2406 | return -1; |
2407 | } | |
2408 | return num_operands; | |
2409 | } | |
2410 | ||
2411 | /* Assemble a single instruction. Its label has already been handled | |
2412 | by the generic front end. We just parse mnemonic and operands, and | |
2413 | produce the bytes of data and relocation. */ | |
2414 | void | |
5a49b8ac | 2415 | md_assemble (char *str) |
026df7c5 NC |
2416 | { |
2417 | int ok = 0; | |
2418 | char *s; | |
2419 | int i; | |
2420 | int parsed = 0; | |
be33c5dd SS |
2421 | tic4x_inst_t *inst; /* Instruction template. */ |
2422 | tic4x_inst_t *first_inst; | |
026df7c5 | 2423 | |
a1f3c24c SS |
2424 | /* Scan for parallel operators */ |
2425 | if (str) | |
2426 | { | |
2427 | s = str; | |
2428 | while (*s && *s != '|') | |
2429 | s++; | |
2430 | ||
2431 | if (*s && s[1]=='|') | |
2432 | { | |
2433 | if(insn->parallel) | |
2434 | { | |
20203fb9 | 2435 | as_bad (_("Parallel opcode cannot contain more than two instructions")); |
a1f3c24c SS |
2436 | insn->parallel = 0; |
2437 | insn->in_use = 0; | |
2438 | return; | |
2439 | } | |
2440 | ||
2441 | /* Lets take care of the first part of the parallel insn */ | |
2442 | *s++ = 0; | |
2443 | md_assemble(str); | |
2444 | insn->parallel = 1; | |
2445 | str = ++s; | |
2446 | /* .. and let the second run though here */ | |
2447 | } | |
2448 | } | |
2449 | ||
026df7c5 NC |
2450 | if (str && insn->parallel) |
2451 | { | |
026df7c5 NC |
2452 | /* Find mnemonic (second part of parallel instruction). */ |
2453 | s = str; | |
2454 | /* Skip past instruction mnemonic. */ | |
a1f3c24c | 2455 | while (*s && *s != ' ') |
026df7c5 | 2456 | s++; |
026df7c5 NC |
2457 | if (*s) /* Null terminate for hash_find. */ |
2458 | *s++ = '\0'; /* and skip past null. */ | |
2459 | strcat (insn->name, "_"); | |
be33c5dd | 2460 | strncat (insn->name, str, TIC4X_NAME_MAX - strlen (insn->name)); |
026df7c5 | 2461 | |
026df7c5 NC |
2462 | insn->operands[insn->num_operands++].mode = M_PARALLEL; |
2463 | ||
be33c5dd | 2464 | if ((i = tic4x_operands_parse |
026df7c5 NC |
2465 | (s, insn->operands, insn->num_operands)) < 0) |
2466 | { | |
2467 | insn->parallel = 0; | |
2468 | insn->in_use = 0; | |
2469 | return; | |
2470 | } | |
2471 | insn->num_operands = i; | |
2472 | parsed = 1; | |
2473 | } | |
2474 | ||
2475 | if (insn->in_use) | |
2476 | { | |
be33c5dd SS |
2477 | if ((insn->inst = (struct tic4x_inst *) |
2478 | hash_find (tic4x_op_hash, insn->name)) == NULL) | |
026df7c5 | 2479 | { |
20203fb9 | 2480 | as_bad (_("Unknown opcode `%s'."), insn->name); |
026df7c5 NC |
2481 | insn->parallel = 0; |
2482 | insn->in_use = 0; | |
2483 | return; | |
2484 | } | |
2485 | ||
026df7c5 | 2486 | inst = insn->inst; |
9c87d6c7 | 2487 | first_inst = NULL; |
026df7c5 | 2488 | do |
9c87d6c7 | 2489 | { |
be33c5dd | 2490 | ok = tic4x_operands_match (inst, insn, 1); |
9c87d6c7 SS |
2491 | if (ok < 0) |
2492 | { | |
2493 | if (!first_inst) | |
2494 | first_inst = inst; | |
2495 | ok = 0; | |
2496 | } | |
2497 | } while (!ok && !strcmp (inst->name, inst[1].name) && inst++); | |
026df7c5 NC |
2498 | |
2499 | if (ok > 0) | |
9c87d6c7 | 2500 | { |
be33c5dd SS |
2501 | tic4x_insn_check (insn); |
2502 | tic4x_insn_output (insn); | |
9c87d6c7 | 2503 | } |
026df7c5 | 2504 | else if (!ok) |
9c87d6c7 SS |
2505 | { |
2506 | if (first_inst) | |
be33c5dd | 2507 | tic4x_operands_match (first_inst, insn, 0); |
20203fb9 | 2508 | as_bad (_("Invalid operands for %s"), insn->name); |
9c87d6c7 | 2509 | } |
026df7c5 | 2510 | else |
20203fb9 | 2511 | as_bad (_("Invalid instruction %s"), insn->name); |
026df7c5 NC |
2512 | } |
2513 | ||
2514 | if (str && !parsed) | |
2515 | { | |
2516 | /* Find mnemonic. */ | |
2517 | s = str; | |
2518 | while (*s && *s != ' ') /* Skip past instruction mnemonic. */ | |
2519 | s++; | |
2520 | if (*s) /* Null terminate for hash_find. */ | |
2521 | *s++ = '\0'; /* and skip past null. */ | |
be33c5dd | 2522 | strncpy (insn->name, str, TIC4X_NAME_MAX - 3); |
026df7c5 | 2523 | |
be33c5dd | 2524 | if ((i = tic4x_operands_parse (s, insn->operands, 0)) < 0) |
026df7c5 | 2525 | { |
708587a4 | 2526 | insn->inst = NULL; /* Flag that error occurred. */ |
026df7c5 NC |
2527 | insn->parallel = 0; |
2528 | insn->in_use = 0; | |
2529 | return; | |
2530 | } | |
2531 | insn->num_operands = i; | |
2532 | insn->in_use = 1; | |
2533 | } | |
2534 | else | |
2535 | insn->in_use = 0; | |
2536 | insn->parallel = 0; | |
2537 | } | |
2538 | ||
2539 | void | |
5a49b8ac | 2540 | tic4x_cleanup (void) |
026df7c5 NC |
2541 | { |
2542 | if (insn->in_use) | |
2543 | md_assemble (NULL); | |
2544 | } | |
2545 | ||
2546 | /* Turn a string in input_line_pointer into a floating point constant | |
2547 | of type type, and store the appropriate bytes in *litP. The number | |
499ac353 | 2548 | of chars emitted is stored in *sizeP. An error message is |
026df7c5 NC |
2549 | returned, or NULL on OK. */ |
2550 | ||
2551 | char * | |
499ac353 | 2552 | md_atof (int type, char *litP, int *sizeP) |
026df7c5 NC |
2553 | { |
2554 | int prec; | |
2555 | int ieee; | |
2556 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
2557 | LITTLENUM_TYPE *wordP; | |
2132e3a3 | 2558 | char *t; |
026df7c5 NC |
2559 | |
2560 | switch (type) | |
2561 | { | |
499ac353 | 2562 | case 's': /* .single */ |
026df7c5 NC |
2563 | case 'S': |
2564 | ieee = 0; | |
2565 | prec = 1; | |
2566 | break; | |
2567 | ||
499ac353 | 2568 | case 'd': /* .double */ |
026df7c5 | 2569 | case 'D': |
499ac353 | 2570 | case 'f': /* .float */ |
026df7c5 NC |
2571 | case 'F': |
2572 | ieee = 0; | |
499ac353 | 2573 | prec = 2; /* 1 32-bit word */ |
026df7c5 NC |
2574 | break; |
2575 | ||
499ac353 | 2576 | case 'i': /* .ieee */ |
247b1fe6 | 2577 | case 'I': |
026df7c5 NC |
2578 | prec = 2; |
2579 | ieee = 1; | |
499ac353 | 2580 | type = 'f'; /* Rewrite type to be usable by atof_ieee(). */ |
026df7c5 NC |
2581 | break; |
2582 | ||
499ac353 | 2583 | case 'e': /* .ldouble */ |
247b1fe6 | 2584 | case 'E': |
499ac353 | 2585 | prec = 4; /* 2 32-bit words */ |
247b1fe6 | 2586 | ieee = 0; |
026df7c5 NC |
2587 | break; |
2588 | ||
2589 | default: | |
2590 | *sizeP = 0; | |
499ac353 | 2591 | return _("Unrecognized or unsupported floating point constant"); |
026df7c5 NC |
2592 | } |
2593 | ||
2594 | if (ieee) | |
2595 | t = atof_ieee (input_line_pointer, type, words); | |
2596 | else | |
be33c5dd | 2597 | t = tic4x_atof (input_line_pointer, type, words); |
026df7c5 NC |
2598 | if (t) |
2599 | input_line_pointer = t; | |
2600 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
2132e3a3 | 2601 | |
026df7c5 NC |
2602 | /* This loops outputs the LITTLENUMs in REVERSE order; in accord with |
2603 | little endian byte order. */ | |
247b1fe6 SS |
2604 | /* SES: However it is required to put the words (32-bits) out in the |
2605 | correct order, hence we write 2 and 2 littlenums in little endian | |
499ac353 NC |
2606 | order, while we keep the original order on successive words. */ |
2607 | for (wordP = words; wordP<(words+prec) ; wordP+=2) | |
026df7c5 | 2608 | { |
499ac353 | 2609 | if (wordP < (words + prec - 1)) /* Dump wordP[1] (if we have one). */ |
247b1fe6 SS |
2610 | { |
2611 | md_number_to_chars (litP, (valueT) (wordP[1]), | |
2612 | sizeof (LITTLENUM_TYPE)); | |
2613 | litP += sizeof (LITTLENUM_TYPE); | |
2614 | } | |
2615 | ||
2616 | /* Dump wordP[0] */ | |
2617 | md_number_to_chars (litP, (valueT) (wordP[0]), | |
2618 | sizeof (LITTLENUM_TYPE)); | |
026df7c5 NC |
2619 | litP += sizeof (LITTLENUM_TYPE); |
2620 | } | |
499ac353 | 2621 | return NULL; |
026df7c5 NC |
2622 | } |
2623 | ||
2624 | void | |
5a49b8ac | 2625 | md_apply_fix (fixS *fixP, valueT *value, segT seg ATTRIBUTE_UNUSED) |
026df7c5 NC |
2626 | { |
2627 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
2628 | valueT val = *value; | |
2629 | ||
2630 | switch (fixP->fx_r_type) | |
2631 | { | |
2632 | case BFD_RELOC_HI16: | |
2633 | val >>= 16; | |
2634 | break; | |
2635 | ||
2636 | case BFD_RELOC_LO16: | |
2637 | val &= 0xffff; | |
2638 | break; | |
2639 | default: | |
2640 | break; | |
2641 | } | |
2642 | ||
2643 | switch (fixP->fx_r_type) | |
2644 | { | |
2645 | case BFD_RELOC_32: | |
2646 | buf[3] = val >> 24; | |
2647 | case BFD_RELOC_24: | |
2648 | case BFD_RELOC_24_PCREL: | |
2649 | buf[2] = val >> 16; | |
2650 | case BFD_RELOC_16: | |
2651 | case BFD_RELOC_16_PCREL: | |
2652 | case BFD_RELOC_LO16: | |
2653 | case BFD_RELOC_HI16: | |
2654 | buf[1] = val >> 8; | |
2655 | buf[0] = val; | |
2656 | break; | |
2657 | ||
2658 | case NO_RELOC: | |
2659 | default: | |
20203fb9 | 2660 | as_bad (_("Bad relocation type: 0x%02x"), fixP->fx_r_type); |
026df7c5 NC |
2661 | break; |
2662 | } | |
2663 | ||
2664 | if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) fixP->fx_done = 1; | |
2665 | } | |
2666 | ||
be33c5dd | 2667 | /* Should never be called for tic4x. */ |
026df7c5 | 2668 | void |
5a49b8ac AM |
2669 | md_convert_frag (bfd *headers ATTRIBUTE_UNUSED, |
2670 | segT sec ATTRIBUTE_UNUSED, | |
2671 | fragS *fragP ATTRIBUTE_UNUSED) | |
026df7c5 NC |
2672 | { |
2673 | as_fatal ("md_convert_frag"); | |
2674 | } | |
2675 | ||
be33c5dd | 2676 | /* Should never be called for tic4x. */ |
026df7c5 | 2677 | void |
5a49b8ac AM |
2678 | md_create_short_jump (char *ptr ATTRIBUTE_UNUSED, |
2679 | addressT from_addr ATTRIBUTE_UNUSED, | |
2680 | addressT to_addr ATTRIBUTE_UNUSED, | |
2681 | fragS *frag ATTRIBUTE_UNUSED, | |
2682 | symbolS *to_symbol ATTRIBUTE_UNUSED) | |
026df7c5 NC |
2683 | { |
2684 | as_fatal ("md_create_short_jmp\n"); | |
2685 | } | |
2686 | ||
be33c5dd | 2687 | /* Should never be called for tic4x. */ |
026df7c5 | 2688 | void |
5a49b8ac AM |
2689 | md_create_long_jump (char *ptr ATTRIBUTE_UNUSED, |
2690 | addressT from_addr ATTRIBUTE_UNUSED, | |
2691 | addressT to_addr ATTRIBUTE_UNUSED, | |
2692 | fragS *frag ATTRIBUTE_UNUSED, | |
2693 | symbolS *to_symbol ATTRIBUTE_UNUSED) | |
026df7c5 NC |
2694 | { |
2695 | as_fatal ("md_create_long_jump\n"); | |
2696 | } | |
2697 | ||
be33c5dd | 2698 | /* Should never be called for tic4x. */ |
026df7c5 | 2699 | int |
5a49b8ac AM |
2700 | md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED, |
2701 | segT segtype ATTRIBUTE_UNUSED) | |
026df7c5 NC |
2702 | { |
2703 | as_fatal ("md_estimate_size_before_relax\n"); | |
2704 | return 0; | |
2705 | } | |
2706 | ||
026df7c5 NC |
2707 | |
2708 | int | |
5a49b8ac | 2709 | md_parse_option (int c, char *arg) |
026df7c5 NC |
2710 | { |
2711 | switch (c) | |
2712 | { | |
9c87d6c7 | 2713 | case OPTION_CPU: /* cpu brand */ |
278ed128 | 2714 | if (TOLOWER (*arg) == 'c') |
026df7c5 | 2715 | arg++; |
be33c5dd SS |
2716 | tic4x_cpu = atoi (arg); |
2717 | if (!IS_CPU_TIC3X (tic4x_cpu) && !IS_CPU_TIC4X (tic4x_cpu)) | |
20203fb9 | 2718 | as_warn (_("Unsupported processor generation %d"), tic4x_cpu); |
026df7c5 | 2719 | break; |
9c87d6c7 SS |
2720 | |
2721 | case OPTION_REV: /* cpu revision */ | |
be33c5dd | 2722 | tic4x_revision = atoi (arg); |
9c87d6c7 SS |
2723 | break; |
2724 | ||
2725 | case 'b': | |
20203fb9 | 2726 | as_warn (_("Option -b is depreciated, please use -mbig")); |
9c87d6c7 | 2727 | case OPTION_BIG: /* big model */ |
be33c5dd | 2728 | tic4x_big_model = 1; |
9c87d6c7 SS |
2729 | break; |
2730 | ||
2731 | case 'p': | |
20203fb9 | 2732 | as_warn (_("Option -p is depreciated, please use -mmemparm")); |
9c87d6c7 | 2733 | case OPTION_MEMPARM: /* push args */ |
be33c5dd | 2734 | tic4x_reg_args = 0; |
026df7c5 | 2735 | break; |
9c87d6c7 SS |
2736 | |
2737 | case 'r': | |
20203fb9 | 2738 | as_warn (_("Option -r is depreciated, please use -mregparm")); |
9c87d6c7 | 2739 | case OPTION_REGPARM: /* register args */ |
be33c5dd | 2740 | tic4x_reg_args = 1; |
026df7c5 | 2741 | break; |
9c87d6c7 SS |
2742 | |
2743 | case 's': | |
20203fb9 | 2744 | as_warn (_("Option -s is depreciated, please use -msmall")); |
9c87d6c7 | 2745 | case OPTION_SMALL: /* small model */ |
be33c5dd | 2746 | tic4x_big_model = 0; |
026df7c5 | 2747 | break; |
9c87d6c7 SS |
2748 | |
2749 | case OPTION_IDLE2: | |
be33c5dd | 2750 | tic4x_idle2 = 1; |
9c87d6c7 SS |
2751 | break; |
2752 | ||
2753 | case OPTION_LOWPOWER: | |
be33c5dd | 2754 | tic4x_lowpower = 1; |
9c87d6c7 SS |
2755 | break; |
2756 | ||
2757 | case OPTION_ENHANCED: | |
be33c5dd | 2758 | tic4x_enhanced = 1; |
9c87d6c7 SS |
2759 | break; |
2760 | ||
026df7c5 NC |
2761 | default: |
2762 | return 0; | |
2763 | } | |
2764 | ||
2765 | return 1; | |
2766 | } | |
2767 | ||
2768 | void | |
5a49b8ac | 2769 | md_show_usage (FILE *stream) |
026df7c5 | 2770 | { |
9c87d6c7 SS |
2771 | fprintf (stream, |
2772 | _("\nTIC4X options:\n" | |
2773 | " -mcpu=CPU -mCPU select architecture variant. CPU can be:\n" | |
2774 | " 30 - TMS320C30\n" | |
2775 | " 31 - TMS320C31, TMS320LC31\n" | |
2776 | " 32 - TMS320C32\n" | |
2777 | " 33 - TMS320VC33\n" | |
2778 | " 40 - TMS320C40\n" | |
2779 | " 44 - TMS320C44\n" | |
2780 | " -mrev=REV set cpu hardware revision (integer numbers).\n" | |
2781 | " Combinations of -mcpu and -mrev will enable/disable\n" | |
2782 | " the appropriate options (-midle2, -mlowpower and\n" | |
2783 | " -menhanced) according to the selected type\n" | |
2784 | " -mbig select big memory model\n" | |
2785 | " -msmall select small memory model (default)\n" | |
2786 | " -mregparm select register parameters (default)\n" | |
2787 | " -mmemparm select memory parameters\n" | |
2788 | " -midle2 enable IDLE2 support\n" | |
2789 | " -mlowpower enable LOPOWER and MAXSPEED support\n" | |
2790 | " -menhanced enable enhanced opcode support\n")); | |
026df7c5 NC |
2791 | } |
2792 | ||
2793 | /* This is called when a line is unrecognized. This is used to handle | |
2794 | definitions of TI C3x tools style local labels $n where n is a single | |
2795 | decimal digit. */ | |
2796 | int | |
5a49b8ac | 2797 | tic4x_unrecognized_line (int c) |
026df7c5 NC |
2798 | { |
2799 | int lab; | |
2800 | char *s; | |
2801 | ||
278ed128 | 2802 | if (c != '$' || ! ISDIGIT (input_line_pointer[0])) |
026df7c5 NC |
2803 | return 0; |
2804 | ||
2805 | s = input_line_pointer; | |
2806 | ||
2807 | /* Let's allow multiple digit local labels. */ | |
2808 | lab = 0; | |
278ed128 | 2809 | while (ISDIGIT (*s)) |
026df7c5 NC |
2810 | { |
2811 | lab = lab * 10 + *s - '0'; | |
2812 | s++; | |
2813 | } | |
2814 | ||
2815 | if (dollar_label_defined (lab)) | |
2816 | { | |
20203fb9 | 2817 | as_bad (_("Label \"$%d\" redefined"), lab); |
026df7c5 NC |
2818 | return 0; |
2819 | } | |
2820 | ||
2821 | define_dollar_label (lab); | |
2822 | colon (dollar_label_name (lab, 0)); | |
2823 | input_line_pointer = s + 1; | |
2824 | ||
2825 | return 1; | |
2826 | } | |
2827 | ||
2828 | /* Handle local labels peculiar to us referred to in an expression. */ | |
2829 | symbolS * | |
5a49b8ac | 2830 | md_undefined_symbol (char *name) |
026df7c5 NC |
2831 | { |
2832 | /* Look for local labels of the form $n. */ | |
278ed128 | 2833 | if (name[0] == '$' && ISDIGIT (name[1])) |
026df7c5 NC |
2834 | { |
2835 | symbolS *symbolP; | |
2836 | char *s = name + 1; | |
2837 | int lab = 0; | |
2838 | ||
278ed128 | 2839 | while (ISDIGIT ((unsigned char) *s)) |
026df7c5 NC |
2840 | { |
2841 | lab = lab * 10 + *s - '0'; | |
2842 | s++; | |
2843 | } | |
2844 | if (dollar_label_defined (lab)) | |
2845 | { | |
2846 | name = dollar_label_name (lab, 0); | |
2847 | symbolP = symbol_find (name); | |
2848 | } | |
2849 | else | |
2850 | { | |
2851 | name = dollar_label_name (lab, 1); | |
2852 | symbolP = symbol_find_or_make (name); | |
2853 | } | |
2854 | ||
2855 | return symbolP; | |
2856 | } | |
2857 | return NULL; | |
2858 | } | |
2859 | ||
2860 | /* Parse an operand that is machine-specific. */ | |
2861 | void | |
5a49b8ac | 2862 | md_operand (expressionS *expressionP ATTRIBUTE_UNUSED) |
026df7c5 NC |
2863 | { |
2864 | } | |
2865 | ||
2866 | /* Round up a section size to the appropriate boundary---do we need this? */ | |
2867 | valueT | |
5a49b8ac | 2868 | md_section_align (segT segment ATTRIBUTE_UNUSED, valueT size) |
026df7c5 NC |
2869 | { |
2870 | return size; /* Byte (i.e., 32-bit) alignment is fine? */ | |
2871 | } | |
2872 | ||
2873 | static int | |
5a49b8ac | 2874 | tic4x_pc_offset (unsigned int op) |
026df7c5 NC |
2875 | { |
2876 | /* Determine the PC offset for a C[34]x instruction. | |
2877 | This could be simplified using some boolean algebra | |
2878 | but at the expense of readability. */ | |
2879 | switch (op >> 24) | |
2880 | { | |
2881 | case 0x60: /* br */ | |
2882 | case 0x62: /* call (C4x) */ | |
2883 | case 0x64: /* rptb (C4x) */ | |
2884 | return 1; | |
2885 | case 0x61: /* brd */ | |
2886 | case 0x63: /* laj */ | |
2887 | case 0x65: /* rptbd (C4x) */ | |
2888 | return 3; | |
2889 | case 0x66: /* swi */ | |
2890 | case 0x67: | |
2891 | return 0; | |
2892 | default: | |
2893 | break; | |
2894 | } | |
2895 | ||
2896 | switch ((op & 0xffe00000) >> 20) | |
2897 | { | |
2898 | case 0x6a0: /* bB */ | |
2899 | case 0x720: /* callB */ | |
2900 | case 0x740: /* trapB */ | |
2901 | return 1; | |
2902 | ||
2903 | case 0x6a2: /* bBd */ | |
2904 | case 0x6a6: /* bBat */ | |
2905 | case 0x6aa: /* bBaf */ | |
2906 | case 0x722: /* lajB */ | |
2907 | case 0x748: /* latB */ | |
2908 | case 0x798: /* rptbd */ | |
2909 | return 3; | |
2910 | ||
2911 | default: | |
2912 | break; | |
2913 | } | |
2914 | ||
2915 | switch ((op & 0xfe200000) >> 20) | |
2916 | { | |
2917 | case 0x6e0: /* dbB */ | |
2918 | return 1; | |
2919 | ||
2920 | case 0x6e2: /* dbBd */ | |
2921 | return 3; | |
2922 | ||
2923 | default: | |
2924 | break; | |
2925 | } | |
2926 | ||
2927 | return 0; | |
2928 | } | |
2929 | ||
2930 | /* Exactly what point is a PC-relative offset relative TO? | |
2931 | With the C3x we have the following: | |
2932 | DBcond, Bcond disp + PC + 1 => PC | |
2933 | DBcondD, BcondD disp + PC + 3 => PC | |
2934 | */ | |
2935 | long | |
5a49b8ac | 2936 | md_pcrel_from (fixS *fixP) |
026df7c5 | 2937 | { |
2132e3a3 | 2938 | unsigned char *buf; |
026df7c5 NC |
2939 | unsigned int op; |
2940 | ||
2132e3a3 | 2941 | buf = (unsigned char *) fixP->fx_frag->fr_literal + fixP->fx_where; |
026df7c5 NC |
2942 | op = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; |
2943 | ||
2944 | return ((fixP->fx_where + fixP->fx_frag->fr_address) >> 2) + | |
be33c5dd | 2945 | tic4x_pc_offset (op); |
026df7c5 NC |
2946 | } |
2947 | ||
247b1fe6 SS |
2948 | /* Fill the alignment area with NOP's on .text, unless fill-data |
2949 | was specified. */ | |
026df7c5 | 2950 | int |
b9fcee79 AM |
2951 | tic4x_do_align (int alignment, |
2952 | const char *fill, | |
2953 | int len, | |
2954 | int max) | |
026df7c5 | 2955 | { |
33b7f697 | 2956 | /* Because we are talking lwords, not bytes, adjust alignment to do words */ |
247b1fe6 SS |
2957 | alignment += 2; |
2958 | ||
2959 | if (alignment != 0 && !need_pass_2) | |
2960 | { | |
2961 | if (fill == NULL) | |
2962 | { | |
18498503 | 2963 | if (subseg_text_p (now_seg)) |
b9fcee79 AM |
2964 | { |
2965 | char nop[4]; | |
2966 | ||
2967 | md_number_to_chars (nop, TIC_NOP_OPCODE, 4); | |
2968 | frag_align_pattern (alignment, nop, sizeof (nop), max); | |
2969 | } | |
2970 | else | |
2971 | frag_align (alignment, 0, max); | |
247b1fe6 SS |
2972 | } |
2973 | else if (len <= 1) | |
2974 | frag_align (alignment, *fill, max); | |
2975 | else | |
2976 | frag_align_pattern (alignment, fill, len, max); | |
2977 | } | |
2978 | ||
33b7f697 | 2979 | /* Return 1 to skip the default alignment function */ |
026df7c5 NC |
2980 | return 1; |
2981 | } | |
2982 | ||
2983 | /* Look for and remove parallel instruction operator ||. */ | |
2984 | void | |
5a49b8ac | 2985 | tic4x_start_line (void) |
026df7c5 NC |
2986 | { |
2987 | char *s = input_line_pointer; | |
2988 | ||
2989 | SKIP_WHITESPACE (); | |
2990 | ||
2991 | /* If parallel instruction prefix found at start of line, skip it. */ | |
2992 | if (*input_line_pointer == '|' && input_line_pointer[1] == '|') | |
2993 | { | |
2994 | if (insn->in_use) | |
2995 | { | |
2996 | insn->parallel = 1; | |
a1f3c24c SS |
2997 | input_line_pointer ++; |
2998 | *input_line_pointer = ' '; | |
026df7c5 NC |
2999 | /* So line counters get bumped. */ |
3000 | input_line_pointer[-1] = '\n'; | |
3001 | } | |
3002 | } | |
3003 | else | |
3004 | { | |
a1f3c24c | 3005 | /* Write out the previous insn here */ |
026df7c5 NC |
3006 | if (insn->in_use) |
3007 | md_assemble (NULL); | |
3008 | input_line_pointer = s; | |
3009 | } | |
3010 | } | |
3011 | ||
3012 | arelent * | |
5a49b8ac | 3013 | tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixP) |
026df7c5 NC |
3014 | { |
3015 | arelent *reloc; | |
3016 | ||
3017 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
3018 | ||
3019 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
3020 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy); | |
3021 | reloc->address = fixP->fx_frag->fr_address + fixP->fx_where; | |
3022 | reloc->address /= OCTETS_PER_BYTE; | |
3023 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
3024 | if (reloc->howto == (reloc_howto_type *) NULL) | |
3025 | { | |
3026 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
20203fb9 | 3027 | _("Reloc %d not supported by object file format"), |
026df7c5 NC |
3028 | (int) fixP->fx_r_type); |
3029 | return NULL; | |
3030 | } | |
3031 | ||
3032 | if (fixP->fx_r_type == BFD_RELOC_HI16) | |
3033 | reloc->addend = fixP->fx_offset; | |
3034 | else | |
3035 | reloc->addend = fixP->fx_addnumber; | |
3036 | ||
3037 | return reloc; | |
3038 | } |