]>
Commit | Line | Data |
---|---|---|
be33c5dd | 1 | /* tc-tic4x.c -- Assemble for the Texas Instruments TMS320C[34]x. |
6f2750fe | 2 | Copyright (C) 1997-2016 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 | |
3739860c | 20 | the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
4b4da160 | 21 | Boston, MA 02110-1301, USA. */ |
247b1fe6 SS |
22 | /* |
23 | TODOs: | |
24 | ------ | |
3739860c | 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" | |
026df7c5 NC |
46 | |
47 | /* OK, we accept a syntax similar to the other well known C30 | |
be33c5dd | 48 | assembly tools. With TIC4X_ALT_SYNTAX defined we are more |
026df7c5 NC |
49 | flexible, allowing a more Unix-like syntax: `%' in front of |
50 | register names, `#' in front of immediate constants, and | |
51 | not requiring `@' in front of direct addresses. */ | |
52 | ||
be33c5dd | 53 | #define TIC4X_ALT_SYNTAX |
026df7c5 NC |
54 | |
55 | /* Equal to MAX_PRECISION in atof-ieee.c. */ | |
56 | #define MAX_LITTLENUMS 6 /* (12 bytes) */ | |
57 | ||
58 | /* Handle of the inst mnemonic hash table. */ | |
be33c5dd | 59 | static struct hash_control *tic4x_op_hash = NULL; |
026df7c5 NC |
60 | |
61 | /* Handle asg pseudo. */ | |
be33c5dd | 62 | static struct hash_control *tic4x_asg_hash = NULL; |
026df7c5 | 63 | |
be33c5dd SS |
64 | static unsigned int tic4x_cpu = 0; /* Default to TMS320C40. */ |
65 | static unsigned int tic4x_revision = 0; /* CPU revision */ | |
66 | static unsigned int tic4x_idle2 = 0; /* Idle2 support */ | |
67 | static unsigned int tic4x_lowpower = 0; /* Lowpower support */ | |
68 | static unsigned int tic4x_enhanced = 0; /* Enhanced opcode support */ | |
69 | static unsigned int tic4x_big_model = 0; /* Default to small memory model. */ | |
70 | static unsigned int tic4x_reg_args = 0; /* Default to args passed on stack. */ | |
71 | static unsigned long tic4x_oplevel = 0; /* Opcode level */ | |
9c87d6c7 SS |
72 | |
73 | #define OPTION_CPU 'm' | |
74 | #define OPTION_BIG (OPTION_MD_BASE + 1) | |
75 | #define OPTION_SMALL (OPTION_MD_BASE + 2) | |
76 | #define OPTION_MEMPARM (OPTION_MD_BASE + 3) | |
77 | #define OPTION_REGPARM (OPTION_MD_BASE + 4) | |
78 | #define OPTION_IDLE2 (OPTION_MD_BASE + 5) | |
79 | #define OPTION_LOWPOWER (OPTION_MD_BASE + 6) | |
80 | #define OPTION_ENHANCED (OPTION_MD_BASE + 7) | |
81 | #define OPTION_REV (OPTION_MD_BASE + 8) | |
82 | ||
cda796e1 | 83 | const char *md_shortopts = "bm:prs"; |
9c87d6c7 SS |
84 | struct option md_longopts[] = |
85 | { | |
86 | { "mcpu", required_argument, NULL, OPTION_CPU }, | |
87 | { "mdsp", required_argument, NULL, OPTION_CPU }, | |
88 | { "mbig", no_argument, NULL, OPTION_BIG }, | |
89 | { "msmall", no_argument, NULL, OPTION_SMALL }, | |
90 | { "mmemparm", no_argument, NULL, OPTION_MEMPARM }, | |
91 | { "mregparm", no_argument, NULL, OPTION_REGPARM }, | |
92 | { "midle2", no_argument, NULL, OPTION_IDLE2 }, | |
93 | { "mlowpower", no_argument, NULL, OPTION_LOWPOWER }, | |
94 | { "menhanced", no_argument, NULL, OPTION_ENHANCED }, | |
95 | { "mrev", required_argument, NULL, OPTION_REV }, | |
96 | { NULL, no_argument, NULL, 0 } | |
97 | }; | |
98 | ||
99 | size_t md_longopts_size = sizeof (md_longopts); | |
100 | ||
026df7c5 NC |
101 | |
102 | typedef enum | |
103 | { | |
104 | M_UNKNOWN, M_IMMED, M_DIRECT, M_REGISTER, M_INDIRECT, | |
105 | M_IMMED_F, M_PARALLEL, M_HI | |
106 | } | |
be33c5dd | 107 | tic4x_addr_mode_t; |
026df7c5 | 108 | |
be33c5dd | 109 | typedef struct tic4x_operand |
026df7c5 | 110 | { |
be33c5dd | 111 | tic4x_addr_mode_t mode; /* Addressing mode. */ |
026df7c5 NC |
112 | expressionS expr; /* Expression. */ |
113 | int disp; /* Displacement for indirect addressing. */ | |
114 | int aregno; /* Aux. register number. */ | |
115 | LITTLENUM_TYPE fwords[MAX_LITTLENUMS]; /* Float immed. number. */ | |
116 | } | |
be33c5dd | 117 | tic4x_operand_t; |
026df7c5 | 118 | |
be33c5dd | 119 | typedef struct tic4x_insn |
026df7c5 | 120 | { |
be33c5dd | 121 | char name[TIC4X_NAME_MAX]; /* Mnemonic of instruction. */ |
026df7c5 NC |
122 | unsigned int in_use; /* True if in_use. */ |
123 | unsigned int parallel; /* True if parallel instruction. */ | |
124 | unsigned int nchars; /* This is always 4 for the C30. */ | |
125 | unsigned long opcode; /* Opcode number. */ | |
126 | expressionS exp; /* Expression required for relocation. */ | |
127 | int reloc; /* Relocation type required. */ | |
128 | int pcrel; /* True if relocation PC relative. */ | |
129 | char *pname; /* Name of instruction in parallel. */ | |
130 | unsigned int num_operands; /* Number of operands in total. */ | |
be33c5dd SS |
131 | tic4x_inst_t *inst; /* Pointer to first template. */ |
132 | tic4x_operand_t operands[TIC4X_OPERANDS_MAX]; | |
026df7c5 | 133 | } |
be33c5dd | 134 | tic4x_insn_t; |
026df7c5 | 135 | |
be33c5dd SS |
136 | static tic4x_insn_t the_insn; /* Info about our instruction. */ |
137 | static tic4x_insn_t *insn = &the_insn; | |
026df7c5 | 138 | |
5a49b8ac AM |
139 | static void tic4x_asg (int); |
140 | static void tic4x_bss (int); | |
141 | static void tic4x_globl (int); | |
142 | static void tic4x_cons (int); | |
143 | static void tic4x_stringer (int); | |
144 | static void tic4x_eval (int); | |
145 | static void tic4x_newblock (int); | |
146 | static void tic4x_sect (int); | |
147 | static void tic4x_set (int); | |
148 | static void tic4x_usect (int); | |
149 | static void tic4x_version (int); | |
75d12d11 | 150 | |
026df7c5 NC |
151 | |
152 | const pseudo_typeS | |
153 | md_pseudo_table[] = | |
154 | { | |
155 | {"align", s_align_bytes, 32}, | |
be33c5dd SS |
156 | {"ascii", tic4x_stringer, 1}, |
157 | {"asciz", tic4x_stringer, 0}, | |
158 | {"asg", tic4x_asg, 0}, | |
247b1fe6 | 159 | {"block", s_space, 4}, |
be33c5dd SS |
160 | {"byte", tic4x_cons, 1}, |
161 | {"bss", tic4x_bss, 0}, | |
247b1fe6 | 162 | {"copy", s_include, 0}, |
be33c5dd SS |
163 | {"def", tic4x_globl, 0}, |
164 | {"equ", tic4x_set, 0}, | |
165 | {"eval", tic4x_eval, 0}, | |
166 | {"global", tic4x_globl, 0}, | |
167 | {"globl", tic4x_globl, 0}, | |
168 | {"hword", tic4x_cons, 2}, | |
026df7c5 | 169 | {"ieee", float_cons, 'i'}, |
be33c5dd | 170 | {"int", tic4x_cons, 4}, /* .int allocates 4 bytes. */ |
247b1fe6 | 171 | {"ldouble", float_cons, 'e'}, |
be33c5dd | 172 | {"newblock", tic4x_newblock, 0}, |
247b1fe6 | 173 | {"ref", s_ignore, 0}, /* All undefined treated as external. */ |
be33c5dd SS |
174 | {"set", tic4x_set, 0}, |
175 | {"sect", tic4x_sect, 1}, /* Define named section. */ | |
026df7c5 | 176 | {"space", s_space, 4}, |
be33c5dd SS |
177 | {"string", tic4x_stringer, 0}, |
178 | {"usect", tic4x_usect, 0}, /* Reserve space in uninit. named sect. */ | |
179 | {"version", tic4x_version, 0}, | |
180 | {"word", tic4x_cons, 4}, /* .word allocates 4 bytes. */ | |
181 | {"xdef", tic4x_globl, 0}, | |
026df7c5 NC |
182 | {NULL, 0, 0}, |
183 | }; | |
184 | ||
185 | int md_short_jump_size = 4; | |
186 | int md_long_jump_size = 4; | |
026df7c5 NC |
187 | |
188 | /* This array holds the chars that always start a comment. If the | |
189 | pre-processor is disabled, these aren't very useful. */ | |
be33c5dd | 190 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 NC |
191 | const char comment_chars[] = ";!"; |
192 | #else | |
193 | const char comment_chars[] = ";"; | |
194 | #endif | |
195 | ||
196 | /* This array holds the chars that only start a comment at the beginning of | |
197 | a line. If the line seems to have the form '# 123 filename' | |
3739860c | 198 | .line and .file directives will appear in the pre-processed output. |
026df7c5 NC |
199 | Note that input_file.c hand checks for '#' at the beginning of the |
200 | first line of the input file. This is because the compiler outputs | |
3739860c | 201 | #NO_APP at the beginning of its output. |
026df7c5 NC |
202 | Also note that comments like this one will always work. */ |
203 | const char line_comment_chars[] = "#*"; | |
204 | ||
205 | /* We needed an unused char for line separation to work around the | |
206 | lack of macros, using sed and such. */ | |
207 | const char line_separator_chars[] = "&"; | |
208 | ||
209 | /* Chars that can be used to separate mant from exp in floating point nums. */ | |
210 | const char EXP_CHARS[] = "eE"; | |
211 | ||
212 | /* Chars that mean this number is a floating point constant. */ | |
213 | /* As in 0f12.456 */ | |
214 | /* or 0d1.2345e12 */ | |
215 | const char FLT_CHARS[] = "fFilsS"; | |
216 | ||
217 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
218 | changed in read.c. Ideally it shouldn't have to know about it at | |
219 | all, but nothing is ideal around here. */ | |
220 | ||
221 | /* Flonums returned here. */ | |
222 | extern FLONUM_TYPE generic_floating_point_number; | |
223 | ||
224 | /* Precision in LittleNums. */ | |
247b1fe6 | 225 | #define MAX_PRECISION (4) /* Its a bit overkill for us, but the code |
33b7f697 | 226 | requires it... */ |
026df7c5 NC |
227 | #define S_PRECISION (1) /* Short float constants 16-bit. */ |
228 | #define F_PRECISION (2) /* Float and double types 32-bit. */ | |
247b1fe6 | 229 | #define E_PRECISION (4) /* Extended precision, 64-bit (real 40-bit). */ |
026df7c5 NC |
230 | #define GUARD (2) |
231 | ||
232 | /* Turn generic_floating_point_number into a real short/float/double. */ | |
247b1fe6 | 233 | static int |
5a49b8ac | 234 | tic4x_gen_to_words (FLONUM_TYPE flonum, LITTLENUM_TYPE *words, int precision) |
026df7c5 NC |
235 | { |
236 | int return_value = 0; | |
237 | LITTLENUM_TYPE *p; /* Littlenum pointer. */ | |
238 | int mantissa_bits; /* Bits in mantissa field. */ | |
239 | int exponent_bits; /* Bits in exponent field. */ | |
240 | int exponent; | |
241 | unsigned int sone; /* Scaled one. */ | |
242 | unsigned int sfract; /* Scaled fraction. */ | |
243 | unsigned int smant; /* Scaled mantissa. */ | |
244 | unsigned int tmp; | |
247b1fe6 SS |
245 | unsigned int mover; /* Mantissa overflow bits */ |
246 | unsigned int rbit; /* Round bit. */ | |
026df7c5 NC |
247 | int shift; /* Shift count. */ |
248 | ||
e5f129ad | 249 | /* NOTE: Svein Seldal <Svein@dev.seldal.com> |
247b1fe6 SS |
250 | The code in this function is altered slightly to support floats |
251 | with 31-bits mantissas, thus the documentation below may be a | |
252 | little bit inaccurate. | |
3739860c | 253 | |
247b1fe6 SS |
254 | By Michael P. Hayes <m.hayes@elec.canterbury.ac.nz> |
255 | Here is how a generic floating point number is stored using | |
026df7c5 NC |
256 | flonums (an extension of bignums) where p is a pointer to an |
257 | array of LITTLENUMs. | |
258 | ||
259 | For example 2e-3 is stored with exp = -4 and | |
260 | bits[0] = 0x0000 | |
261 | bits[1] = 0x0000 | |
262 | bits[2] = 0x4fde | |
263 | bits[3] = 0x978d | |
264 | bits[4] = 0x126e | |
265 | bits[5] = 0x0083 | |
266 | with low = &bits[2], high = &bits[5], and leader = &bits[5]. | |
267 | ||
268 | This number can be written as | |
269 | 0x0083126e978d4fde.00000000 * 65536**-4 or | |
270 | 0x0.0083126e978d4fde * 65536**0 or | |
271 | 0x0.83126e978d4fde * 2**-8 = 2e-3 | |
272 | ||
273 | Note that low points to the 65536**0 littlenum (bits[2]) and | |
274 | leader points to the most significant non-zero littlenum | |
275 | (bits[5]). | |
276 | ||
277 | TMS320C3X floating point numbers are a bit of a strange beast. | |
278 | The 32-bit flavour has the 8 MSBs representing the exponent in | |
279 | twos complement format (-128 to +127). There is then a sign bit | |
280 | followed by 23 bits of mantissa. The mantissa is expressed in | |
281 | twos complement format with the binary point after the most | |
282 | significant non sign bit. The bit after the binary point is | |
283 | suppressed since it is the complement of the sign bit. The | |
284 | effective mantissa is thus 24 bits. Zero is represented by an | |
285 | exponent of -128. | |
286 | ||
287 | The 16-bit flavour has the 4 MSBs representing the exponent in | |
288 | twos complement format (-8 to +7). There is then a sign bit | |
289 | followed by 11 bits of mantissa. The mantissa is expressed in | |
290 | twos complement format with the binary point after the most | |
291 | significant non sign bit. The bit after the binary point is | |
292 | suppressed since it is the complement of the sign bit. The | |
293 | effective mantissa is thus 12 bits. Zero is represented by an | |
294 | exponent of -8. For example, | |
295 | ||
296 | number norm mant m x e s i fraction f | |
297 | +0.500 => 1.00000000000 -1 -1 0 1 .00000000000 (1 + 0) * 2^(-1) | |
298 | +0.999 => 1.11111111111 -1 -1 0 1 .11111111111 (1 + 0.99) * 2^(-1) | |
299 | +1.000 => 1.00000000000 0 0 0 1 .00000000000 (1 + 0) * 2^(0) | |
300 | +1.500 => 1.10000000000 0 0 0 1 .10000000000 (1 + 0.5) * 2^(0) | |
301 | +1.999 => 1.11111111111 0 0 0 1 .11111111111 (1 + 0.9) * 2^(0) | |
302 | +2.000 => 1.00000000000 1 1 0 1 .00000000000 (1 + 0) * 2^(1) | |
303 | +4.000 => 1.00000000000 2 2 0 1 .00000000000 (1 + 0) * 2^(2) | |
304 | -0.500 => 1.00000000000 -1 -1 1 0 .10000000000 (-2 + 0) * 2^(-2) | |
305 | -1.000 => 1.00000000000 0 -1 1 0 .00000000000 (-2 + 0) * 2^(-1) | |
306 | -1.500 => 1.10000000000 0 0 1 0 .10000000000 (-2 + 0.5) * 2^(0) | |
307 | -1.999 => 1.11111111111 0 0 1 0 .00000000001 (-2 + 0.11) * 2^(0) | |
308 | -2.000 => 1.00000000000 1 1 1 0 .00000000000 (-2 + 0) * 2^(0) | |
309 | -4.000 => 1.00000000000 2 1 1 0 .00000000000 (-2 + 0) * 2^(1) | |
310 | ||
311 | where e is the exponent, s is the sign bit, i is the implied bit, | |
312 | and f is the fraction stored in the mantissa field. | |
313 | ||
314 | num = (1 + f) * 2^x = m * 2^e if s = 0 | |
315 | num = (-2 + f) * 2^x = -m * 2^e if s = 1 | |
316 | where 0 <= f < 1.0 and 1.0 <= m < 2.0 | |
317 | ||
318 | The fraction (f) and exponent (e) fields for the TMS320C3X format | |
319 | can be derived from the normalised mantissa (m) and exponent (x) using: | |
320 | ||
321 | f = m - 1, e = x if s = 0 | |
322 | f = 2 - m, e = x if s = 1 and m != 1.0 | |
323 | f = 0, e = x - 1 if s = 1 and m = 1.0 | |
324 | f = 0, e = -8 if m = 0 | |
325 | ||
326 | ||
327 | OK, the other issue we have to consider is rounding since the | |
328 | mantissa has a much higher potential precision than what we can | |
329 | represent. To do this we add half the smallest storable fraction. | |
330 | We then have to renormalise the number to allow for overflow. | |
331 | ||
332 | To convert a generic flonum into a TMS320C3X floating point | |
333 | number, here's what we try to do.... | |
334 | ||
335 | The first thing is to generate a normalised mantissa (m) where | |
336 | 1.0 <= m < 2 and to convert the exponent from base 16 to base 2. | |
337 | We desire the binary point to be placed after the most significant | |
338 | non zero bit. This process is done in two steps: firstly, the | |
339 | littlenum with the most significant non zero bit is located (this | |
340 | is done for us since leader points to this littlenum) and the | |
341 | binary point (which is currently after the LSB of the littlenum | |
342 | pointed to by low) is moved to before the MSB of the littlenum | |
343 | pointed to by leader. This requires the exponent to be adjusted | |
344 | by leader - low + 1. In the earlier example, the new exponent is | |
345 | thus -4 + (5 - 2 + 1) = 0 (base 65536). We now need to convert | |
346 | the exponent to base 2 by multiplying the exponent by 16 (log2 | |
347 | 65536). The exponent base 2 is thus also zero. | |
348 | ||
349 | The second step is to hunt for the most significant non zero bit | |
350 | in the leader littlenum. We do this by left shifting a copy of | |
351 | the leader littlenum until bit 16 is set (0x10000) and counting | |
352 | the number of shifts, S, required. The number of shifts then has to | |
353 | be added to correct the exponent (base 2). For our example, this | |
354 | will require 9 shifts and thus our normalised exponent (base 2) is | |
355 | 0 + 9 = 9. Note that the worst case scenario is when the leader | |
356 | littlenum is 1, thus requiring 16 shifts. | |
357 | ||
358 | We now have to left shift the other littlenums by the same amount, | |
359 | propagating the shifted bits into the more significant littlenums. | |
33b7f697 | 360 | To save a lot of unnecessary shifting we only have to consider |
026df7c5 NC |
361 | two or three littlenums, since the greatest number of mantissa |
362 | bits required is 24 + 1 rounding bit. While two littlenums | |
363 | provide 32 bits of precision, the most significant littlenum | |
364 | may only contain a single significant bit and thus an extra | |
365 | littlenum is required. | |
366 | ||
367 | Denoting the number of bits in the fraction field as F, we require | |
368 | G = F + 2 bits (one extra bit is for rounding, the other gets | |
369 | suppressed). Say we required S shifts to find the most | |
370 | significant bit in the leader littlenum, the number of left shifts | |
371 | required to move this bit into bit position G - 1 is L = G + S - 17. | |
372 | Note that this shift count may be negative for the short floating | |
373 | point flavour (where F = 11 and thus G = 13 and potentially S < 3). | |
374 | If L > 0 we have to shunt the next littlenum into position. Bit | |
375 | 15 (the MSB) of the next littlenum needs to get moved into position | |
376 | L - 1 (If L > 15 we need all the bits of this littlenum and | |
377 | some more from the next one.). We subtract 16 from L and use this | |
378 | as the left shift count; the resultant value we or with the | |
379 | previous result. If L > 0, we repeat this operation. */ | |
380 | ||
381 | if (precision != S_PRECISION) | |
382 | words[1] = 0x0000; | |
247b1fe6 SS |
383 | if (precision == E_PRECISION) |
384 | words[2] = words[3] = 0x0000; | |
026df7c5 | 385 | |
247b1fe6 SS |
386 | /* 0.0e0 or NaN seen. */ |
387 | if (flonum.low > flonum.leader /* = 0.0e0 */ | |
388 | || flonum.sign == 0) /* = NaN */ | |
026df7c5 | 389 | { |
247b1fe6 | 390 | if(flonum.sign == 0) |
20203fb9 | 391 | as_bad (_("Nan, using zero.")); |
026df7c5 NC |
392 | words[0] = 0x8000; |
393 | return return_value; | |
394 | } | |
395 | ||
247b1fe6 | 396 | if (flonum.sign == 'P') |
026df7c5 NC |
397 | { |
398 | /* +INF: Replace with maximum float. */ | |
399 | if (precision == S_PRECISION) | |
400 | words[0] = 0x77ff; | |
3739860c | 401 | else |
026df7c5 NC |
402 | { |
403 | words[0] = 0x7f7f; | |
404 | words[1] = 0xffff; | |
405 | } | |
247b1fe6 SS |
406 | if (precision == E_PRECISION) |
407 | { | |
408 | words[2] = 0x7fff; | |
409 | words[3] = 0xffff; | |
410 | } | |
026df7c5 NC |
411 | return return_value; |
412 | } | |
413 | else if (flonum.sign == 'N') | |
414 | { | |
415 | /* -INF: Replace with maximum float. */ | |
416 | if (precision == S_PRECISION) | |
417 | words[0] = 0x7800; | |
3739860c | 418 | else |
247b1fe6 SS |
419 | words[0] = 0x7f80; |
420 | if (precision == E_PRECISION) | |
421 | words[2] = 0x8000; | |
026df7c5 NC |
422 | return return_value; |
423 | } | |
424 | ||
425 | exponent = (flonum.exponent + flonum.leader - flonum.low + 1) * 16; | |
426 | ||
427 | if (!(tmp = *flonum.leader)) | |
428 | abort (); /* Hmmm. */ | |
429 | shift = 0; /* Find position of first sig. bit. */ | |
430 | while (tmp >>= 1) | |
431 | shift++; | |
432 | exponent -= (16 - shift); /* Adjust exponent. */ | |
433 | ||
434 | if (precision == S_PRECISION) /* Allow 1 rounding bit. */ | |
435 | { | |
436 | exponent_bits = 4; | |
247b1fe6 | 437 | mantissa_bits = 11; |
026df7c5 | 438 | } |
247b1fe6 SS |
439 | else if(precision == F_PRECISION) |
440 | { | |
441 | exponent_bits = 8; | |
442 | mantissa_bits = 23; | |
443 | } | |
444 | else /* E_PRECISION */ | |
026df7c5 NC |
445 | { |
446 | exponent_bits = 8; | |
247b1fe6 | 447 | mantissa_bits = 31; |
026df7c5 NC |
448 | } |
449 | ||
450 | shift = mantissa_bits - shift; | |
451 | ||
452 | smant = 0; | |
247b1fe6 SS |
453 | mover = 0; |
454 | rbit = 0; | |
455 | /* Store the mantissa data into smant and the roundbit into rbit */ | |
026df7c5 NC |
456 | for (p = flonum.leader; p >= flonum.low && shift > -16; p--) |
457 | { | |
458 | tmp = shift >= 0 ? *p << shift : *p >> -shift; | |
247b1fe6 | 459 | rbit = shift < 0 ? ((*p >> (-shift-1)) & 0x1) : 0; |
026df7c5 NC |
460 | smant |= tmp; |
461 | shift -= 16; | |
462 | } | |
463 | ||
247b1fe6 SS |
464 | /* OK, we've got our scaled mantissa so let's round it up */ |
465 | if(rbit) | |
466 | { | |
467 | /* If the mantissa is going to overflow when added, lets store | |
468 | the extra bit in mover. -- A special case exists when | |
469 | mantissa_bits is 31 (E_PRECISION). Then the first test cannot | |
470 | be trusted, as result is host-dependent, thus the second | |
471 | test. */ | |
472 | if( smant == ((unsigned)(1<<(mantissa_bits+1))-1) | |
473 | || smant == (unsigned)-1 ) /* This is to catch E_PRECISION cases */ | |
474 | mover=1; | |
475 | smant++; | |
476 | } | |
477 | ||
478 | /* Get the scaled one value */ | |
479 | sone = (1 << (mantissa_bits)); | |
026df7c5 NC |
480 | |
481 | /* The number may be unnormalised so renormalise it... */ | |
247b1fe6 | 482 | if(mover) |
026df7c5 NC |
483 | { |
484 | smant >>= 1; | |
247b1fe6 | 485 | smant |= sone; /* Insert the bit from mover into smant */ |
026df7c5 NC |
486 | exponent++; |
487 | } | |
488 | ||
489 | /* The binary point is now between bit positions 11 and 10 or 23 and 22, | |
490 | i.e., between mantissa_bits - 1 and mantissa_bits - 2 and the | |
491 | bit at mantissa_bits - 1 should be set. */ | |
247b1fe6 SS |
492 | if (!(sone&smant)) |
493 | abort (); /* Ooops. */ | |
026df7c5 | 494 | |
026df7c5 NC |
495 | if (flonum.sign == '+') |
496 | sfract = smant - sone; /* smant - 1.0. */ | |
497 | else | |
498 | { | |
499 | /* This seems to work. */ | |
500 | if (smant == sone) | |
501 | { | |
502 | exponent--; | |
503 | sfract = 0; | |
504 | } | |
505 | else | |
247b1fe6 SS |
506 | { |
507 | sfract = -smant & (sone-1); /* 2.0 - smant. */ | |
508 | } | |
026df7c5 NC |
509 | sfract |= sone; /* Insert sign bit. */ |
510 | } | |
511 | ||
512 | if (abs (exponent) >= (1 << (exponent_bits - 1))) | |
20203fb9 | 513 | as_bad (_("Cannot represent exponent in %d bits"), exponent_bits); |
026df7c5 NC |
514 | |
515 | /* Force exponent to fit in desired field width. */ | |
516 | exponent &= (1 << (exponent_bits)) - 1; | |
026df7c5 | 517 | |
247b1fe6 SS |
518 | if (precision == E_PRECISION) |
519 | { | |
520 | /* Map the float part first (100% equal format as F_PRECISION) */ | |
521 | words[0] = exponent << (mantissa_bits+1-24); | |
522 | words[0] |= sfract >> 24; | |
523 | words[1] = sfract >> 8; | |
524 | ||
525 | /* Map the mantissa in the next */ | |
526 | words[2] = sfract >> 16; | |
527 | words[3] = sfract & 0xffff; | |
528 | } | |
026df7c5 NC |
529 | else |
530 | { | |
247b1fe6 SS |
531 | /* Insert the exponent data into the word */ |
532 | sfract |= exponent << (mantissa_bits+1); | |
533 | ||
534 | if (precision == S_PRECISION) | |
535 | words[0] = sfract; | |
536 | else | |
537 | { | |
538 | words[0] = sfract >> 16; | |
539 | words[1] = sfract & 0xffff; | |
540 | } | |
026df7c5 NC |
541 | } |
542 | ||
543 | return return_value; | |
544 | } | |
545 | ||
546 | /* Returns pointer past text consumed. */ | |
247b1fe6 | 547 | static char * |
5a49b8ac | 548 | tic4x_atof (char *str, char what_kind, LITTLENUM_TYPE *words) |
026df7c5 NC |
549 | { |
550 | /* Extra bits for zeroed low-order bits. The 1st MAX_PRECISION are | |
551 | zeroed, the last contain flonum bits. */ | |
552 | static LITTLENUM_TYPE bits[MAX_PRECISION + MAX_PRECISION + GUARD]; | |
553 | char *return_value; | |
554 | /* Number of 16-bit words in the format. */ | |
555 | int precision; | |
556 | FLONUM_TYPE save_gen_flonum; | |
557 | ||
558 | /* We have to save the generic_floating_point_number because it | |
559 | contains storage allocation about the array of LITTLENUMs where | |
560 | the value is actually stored. We will allocate our own array of | |
561 | littlenums below, but have to restore the global one on exit. */ | |
562 | save_gen_flonum = generic_floating_point_number; | |
563 | ||
564 | return_value = str; | |
565 | generic_floating_point_number.low = bits + MAX_PRECISION; | |
566 | generic_floating_point_number.high = NULL; | |
567 | generic_floating_point_number.leader = NULL; | |
568 | generic_floating_point_number.exponent = 0; | |
569 | generic_floating_point_number.sign = '\0'; | |
570 | ||
571 | /* Use more LittleNums than seems necessary: the highest flonum may | |
572 | have 15 leading 0 bits, so could be useless. */ | |
573 | ||
574 | memset (bits, '\0', sizeof (LITTLENUM_TYPE) * MAX_PRECISION); | |
575 | ||
576 | switch (what_kind) | |
577 | { | |
578 | case 's': | |
579 | case 'S': | |
580 | precision = S_PRECISION; | |
581 | break; | |
582 | ||
583 | case 'd': | |
584 | case 'D': | |
585 | case 'f': | |
586 | case 'F': | |
587 | precision = F_PRECISION; | |
588 | break; | |
589 | ||
247b1fe6 SS |
590 | case 'E': |
591 | case 'e': | |
592 | precision = E_PRECISION; | |
593 | break; | |
594 | ||
026df7c5 | 595 | default: |
20203fb9 | 596 | as_bad (_("Invalid floating point number")); |
026df7c5 NC |
597 | return (NULL); |
598 | } | |
599 | ||
600 | generic_floating_point_number.high | |
601 | = generic_floating_point_number.low + precision - 1 + GUARD; | |
602 | ||
603 | if (atof_generic (&return_value, ".", EXP_CHARS, | |
604 | &generic_floating_point_number)) | |
605 | { | |
20203fb9 | 606 | as_bad (_("Invalid floating point number")); |
026df7c5 NC |
607 | return (NULL); |
608 | } | |
609 | ||
be33c5dd | 610 | tic4x_gen_to_words (generic_floating_point_number, |
026df7c5 NC |
611 | words, precision); |
612 | ||
613 | /* Restore the generic_floating_point_number's storage alloc (and | |
614 | everything else). */ | |
615 | generic_floating_point_number = save_gen_flonum; | |
616 | ||
617 | return return_value; | |
618 | } | |
619 | ||
3739860c | 620 | static void |
f86f5863 | 621 | tic4x_insert_reg (const char *regname, int regnum) |
026df7c5 NC |
622 | { |
623 | char buf[32]; | |
624 | int i; | |
625 | ||
626 | symbol_table_insert (symbol_new (regname, reg_section, (valueT) regnum, | |
627 | &zero_address_frag)); | |
628 | for (i = 0; regname[i]; i++) | |
f17c130b | 629 | buf[i] = ISLOWER (regname[i]) ? TOUPPER (regname[i]) : regname[i]; |
026df7c5 NC |
630 | buf[i] = '\0'; |
631 | ||
632 | symbol_table_insert (symbol_new (buf, reg_section, (valueT) regnum, | |
633 | &zero_address_frag)); | |
634 | } | |
635 | ||
3739860c | 636 | static void |
f86f5863 | 637 | tic4x_insert_sym (const char *symname, int value) |
026df7c5 NC |
638 | { |
639 | symbolS *symbolP; | |
640 | ||
641 | symbolP = symbol_new (symname, absolute_section, | |
642 | (valueT) value, &zero_address_frag); | |
643 | SF_SET_LOCAL (symbolP); | |
644 | symbol_table_insert (symbolP); | |
645 | } | |
646 | ||
647 | static char * | |
5a49b8ac | 648 | tic4x_expression (char *str, expressionS *exp) |
026df7c5 NC |
649 | { |
650 | char *s; | |
651 | char *t; | |
652 | ||
653 | t = input_line_pointer; /* Save line pointer. */ | |
654 | input_line_pointer = str; | |
655 | expression (exp); | |
656 | s = input_line_pointer; | |
657 | input_line_pointer = t; /* Restore line pointer. */ | |
658 | return s; /* Return pointer to where parsing stopped. */ | |
659 | } | |
660 | ||
661 | static char * | |
5a49b8ac | 662 | tic4x_expression_abs (char *str, offsetT *value) |
026df7c5 NC |
663 | { |
664 | char *s; | |
665 | char *t; | |
666 | ||
667 | t = input_line_pointer; /* Save line pointer. */ | |
668 | input_line_pointer = str; | |
669 | *value = get_absolute_expression (); | |
670 | s = input_line_pointer; | |
671 | input_line_pointer = t; /* Restore line pointer. */ | |
672 | return s; | |
673 | } | |
674 | ||
3739860c | 675 | static void |
5a49b8ac | 676 | tic4x_emit_char (char c, int b) |
026df7c5 NC |
677 | { |
678 | expressionS exp; | |
679 | ||
680 | exp.X_op = O_constant; | |
681 | exp.X_add_number = c; | |
247b1fe6 | 682 | emit_expr (&exp, b); |
026df7c5 NC |
683 | } |
684 | ||
3739860c | 685 | static void |
5a49b8ac AM |
686 | tic4x_seg_alloc (char *name ATTRIBUTE_UNUSED, |
687 | segT seg ATTRIBUTE_UNUSED, | |
688 | int size, | |
689 | symbolS *symbolP) | |
026df7c5 NC |
690 | { |
691 | /* Note that the size is in words | |
692 | so we multiply it by 4 to get the number of bytes to allocate. */ | |
693 | ||
694 | /* If we have symbol: .usect ".fred", size etc., | |
695 | the symbol needs to point to the first location reserved | |
696 | by the pseudo op. */ | |
697 | ||
698 | if (size) | |
699 | { | |
700 | char *p; | |
701 | ||
702 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, | |
703 | (symbolS *) symbolP, | |
704 | size * OCTETS_PER_BYTE, (char *) 0); | |
705 | *p = 0; | |
706 | } | |
707 | } | |
708 | ||
709 | /* .asg ["]character-string["], symbol */ | |
3739860c | 710 | static void |
5a49b8ac | 711 | tic4x_asg (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
712 | { |
713 | char c; | |
714 | char *name; | |
715 | char *str; | |
026df7c5 NC |
716 | |
717 | SKIP_WHITESPACE (); | |
718 | str = input_line_pointer; | |
719 | ||
720 | /* Skip string expression. */ | |
721 | while (*input_line_pointer != ',' && *input_line_pointer) | |
722 | input_line_pointer++; | |
723 | if (*input_line_pointer != ',') | |
724 | { | |
20203fb9 | 725 | as_bad (_("Comma expected\n")); |
026df7c5 NC |
726 | return; |
727 | } | |
728 | *input_line_pointer++ = '\0'; | |
d02603dc | 729 | c = get_symbol_name (&name); /* Get terminator. */ |
4ec9d7d5 TS |
730 | str = xstrdup (str); |
731 | name = xstrdup (name); | |
be33c5dd | 732 | if (hash_find (tic4x_asg_hash, name)) |
5a49b8ac | 733 | hash_replace (tic4x_asg_hash, name, (void *) str); |
026df7c5 | 734 | else |
5a49b8ac | 735 | hash_insert (tic4x_asg_hash, name, (void *) str); |
d02603dc | 736 | (void) restore_line_pointer (c); |
026df7c5 NC |
737 | demand_empty_rest_of_line (); |
738 | } | |
739 | ||
740 | /* .bss symbol, size */ | |
3739860c | 741 | static void |
5a49b8ac | 742 | tic4x_bss (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
743 | { |
744 | char c; | |
745 | char *name; | |
746 | char *p; | |
2132e3a3 | 747 | offsetT size; |
026df7c5 NC |
748 | segT current_seg; |
749 | subsegT current_subseg; | |
750 | symbolS *symbolP; | |
751 | ||
752 | current_seg = now_seg; /* Save current seg. */ | |
753 | current_subseg = now_subseg; /* Save current subseg. */ | |
754 | ||
755 | SKIP_WHITESPACE (); | |
d02603dc NC |
756 | c = get_symbol_name (&name); /* Get terminator. */ |
757 | if (c == '"') | |
758 | c = * ++ input_line_pointer; | |
026df7c5 NC |
759 | if (c != ',') |
760 | { | |
20203fb9 | 761 | as_bad (_(".bss size argument missing\n")); |
026df7c5 NC |
762 | return; |
763 | } | |
764 | ||
765 | input_line_pointer = | |
be33c5dd | 766 | tic4x_expression_abs (++input_line_pointer, &size); |
026df7c5 NC |
767 | if (size < 0) |
768 | { | |
20203fb9 | 769 | as_bad (_(".bss size %ld < 0!"), (long) size); |
026df7c5 NC |
770 | return; |
771 | } | |
772 | subseg_set (bss_section, 0); | |
773 | symbolP = symbol_find_or_make (name); | |
774 | ||
775 | if (S_GET_SEGMENT (symbolP) == bss_section) | |
776 | symbol_get_frag (symbolP)->fr_symbol = 0; | |
777 | ||
778 | symbol_set_frag (symbolP, frag_now); | |
779 | ||
780 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, | |
781 | size * OCTETS_PER_BYTE, (char *) 0); | |
782 | *p = 0; /* Fill char. */ | |
783 | ||
784 | S_SET_SEGMENT (symbolP, bss_section); | |
785 | ||
786 | /* The symbol may already have been created with a preceding | |
787 | ".globl" directive -- be careful not to step on storage class | |
788 | in that case. Otherwise, set it to static. */ | |
789 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
790 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
791 | ||
792 | subseg_set (current_seg, current_subseg); /* Restore current seg. */ | |
793 | demand_empty_rest_of_line (); | |
794 | } | |
795 | ||
247b1fe6 | 796 | static void |
5a49b8ac | 797 | tic4x_globl (int ignore ATTRIBUTE_UNUSED) |
026df7c5 NC |
798 | { |
799 | char *name; | |
800 | int c; | |
801 | symbolS *symbolP; | |
802 | ||
803 | do | |
804 | { | |
d02603dc | 805 | c = get_symbol_name (&name); |
026df7c5 NC |
806 | symbolP = symbol_find_or_make (name); |
807 | *input_line_pointer = c; | |
d02603dc | 808 | SKIP_WHITESPACE_AFTER_NAME (); |
026df7c5 | 809 | S_SET_STORAGE_CLASS (symbolP, C_EXT); |
e144674a | 810 | S_SET_EXTERNAL (symbolP); |
026df7c5 NC |
811 | if (c == ',') |
812 | { | |
813 | input_line_pointer++; | |
814 | SKIP_WHITESPACE (); | |
815 | if (*input_line_pointer == '\n') | |
816 | c = '\n'; | |
817 | } | |
818 | } | |
819 | while (c == ','); | |
820 | ||
821 | demand_empty_rest_of_line (); | |
822 | } | |
823 | ||
824 | /* Handle .byte, .word. .int, .long */ | |
3739860c | 825 | static void |
5a49b8ac | 826 | tic4x_cons (int bytes) |
026df7c5 | 827 | { |
ed9e98c2 | 828 | unsigned int c; |
026df7c5 NC |
829 | do |
830 | { | |
831 | SKIP_WHITESPACE (); | |
832 | if (*input_line_pointer == '"') | |
833 | { | |
834 | input_line_pointer++; | |
835 | while (is_a_char (c = next_char_of_string ())) | |
be33c5dd | 836 | tic4x_emit_char (c, 4); |
026df7c5 NC |
837 | know (input_line_pointer[-1] == '\"'); |
838 | } | |
839 | else | |
840 | { | |
841 | expressionS exp; | |
842 | ||
be33c5dd | 843 | input_line_pointer = tic4x_expression (input_line_pointer, &exp); |
026df7c5 NC |
844 | if (exp.X_op == O_constant) |
845 | { | |
846 | switch (bytes) | |
847 | { | |
848 | case 1: | |
849 | exp.X_add_number &= 255; | |
850 | break; | |
851 | case 2: | |
852 | exp.X_add_number &= 65535; | |
853 | break; | |
854 | } | |
855 | } | |
856 | /* Perhaps we should disallow .byte and .hword with | |
857 | a non constant expression that will require relocation. */ | |
858 | emit_expr (&exp, 4); | |
859 | } | |
860 | } | |
861 | while (*input_line_pointer++ == ','); | |
862 | ||
863 | input_line_pointer--; /* Put terminator back into stream. */ | |
864 | demand_empty_rest_of_line (); | |
865 | } | |
866 | ||
247b1fe6 | 867 | /* Handle .ascii, .asciz, .string */ |
3739860c | 868 | static void |
5a49b8ac | 869 | tic4x_stringer (int append_zero) |
247b1fe6 SS |
870 | { |
871 | int bytes; | |
ed9e98c2 | 872 | unsigned int c; |
247b1fe6 SS |
873 | |
874 | bytes = 0; | |
875 | do | |
876 | { | |
877 | SKIP_WHITESPACE (); | |
878 | if (*input_line_pointer == '"') | |
879 | { | |
880 | input_line_pointer++; | |
881 | while (is_a_char (c = next_char_of_string ())) | |
882 | { | |
be33c5dd | 883 | tic4x_emit_char (c, 1); |
247b1fe6 SS |
884 | bytes++; |
885 | } | |
886 | ||
887 | if (append_zero) | |
888 | { | |
be33c5dd | 889 | tic4x_emit_char (c, 1); |
247b1fe6 SS |
890 | bytes++; |
891 | } | |
892 | ||
893 | know (input_line_pointer[-1] == '\"'); | |
894 | } | |
895 | else | |
896 | { | |
897 | expressionS exp; | |
898 | ||
be33c5dd | 899 | input_line_pointer = tic4x_expression (input_line_pointer, &exp); |
247b1fe6 SS |
900 | if (exp.X_op != O_constant) |
901 | { | |
20203fb9 | 902 | as_bad (_("Non-constant symbols not allowed\n")); |
247b1fe6 SS |
903 | return; |
904 | } | |
905 | exp.X_add_number &= 255; /* Limit numeber to 8-bit */ | |
906 | emit_expr (&exp, 1); | |
907 | bytes++; | |
908 | } | |
909 | } | |
910 | while (*input_line_pointer++ == ','); | |
911 | ||
912 | /* Fill out the rest of the expression with 0's to fill up a full word */ | |
913 | if ( bytes&0x3 ) | |
be33c5dd | 914 | tic4x_emit_char (0, 4-(bytes&0x3)); |
247b1fe6 SS |
915 | |
916 | input_line_pointer--; /* Put terminator back into stream. */ | |
917 | demand_empty_rest_of_line (); | |
918 | } | |
919 | ||
026df7c5 | 920 | /* .eval expression, symbol */ |
3739860c | 921 | static void |
5a49b8ac | 922 | tic4x_eval (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
923 | { |
924 | char c; | |
2132e3a3 | 925 | offsetT value; |
026df7c5 NC |
926 | char *name; |
927 | ||
928 | SKIP_WHITESPACE (); | |
929 | input_line_pointer = | |
be33c5dd | 930 | tic4x_expression_abs (input_line_pointer, &value); |
026df7c5 NC |
931 | if (*input_line_pointer++ != ',') |
932 | { | |
20203fb9 | 933 | as_bad (_("Symbol missing\n")); |
026df7c5 NC |
934 | return; |
935 | } | |
d02603dc | 936 | c = get_symbol_name (&name); /* Get terminator. */ |
be33c5dd | 937 | tic4x_insert_sym (name, value); |
d02603dc | 938 | (void) restore_line_pointer (c); |
87975d2a | 939 | demand_empty_rest_of_line (); |
026df7c5 NC |
940 | } |
941 | ||
942 | /* Reset local labels. */ | |
3739860c | 943 | static void |
5a49b8ac | 944 | tic4x_newblock (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
945 | { |
946 | dollar_label_clear (); | |
947 | } | |
948 | ||
949 | /* .sect "section-name" [, value] */ | |
950 | /* .sect ["]section-name[:subsection-name]["] [, value] */ | |
3739860c | 951 | static void |
5a49b8ac | 952 | tic4x_sect (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
953 | { |
954 | char c; | |
955 | char *section_name; | |
026df7c5 NC |
956 | char *name; |
957 | segT seg; | |
2132e3a3 | 958 | offsetT num; |
026df7c5 NC |
959 | |
960 | SKIP_WHITESPACE (); | |
961 | if (*input_line_pointer == '"') | |
962 | input_line_pointer++; | |
d02603dc NC |
963 | c = get_symbol_name (§ion_name); /* Get terminator. */ |
964 | if (c == '"') | |
965 | c = * ++ input_line_pointer; | |
026df7c5 | 966 | input_line_pointer++; /* Skip null symbol terminator. */ |
a44e2901 | 967 | name = xstrdup (section_name); |
026df7c5 NC |
968 | |
969 | /* TI C from version 5.0 allows a section name to contain a | |
970 | subsection name as well. The subsection name is separated by a | |
971 | ':' from the section name. Currently we scan the subsection | |
972 | name and discard it. | |
973 | Volker Kuhlmann <v.kuhlmann@elec.canterbury.ac.nz>. */ | |
974 | if (c == ':') | |
975 | { | |
d02603dc NC |
976 | char *subname; |
977 | c = get_symbol_name (&subname); /* Get terminator. */ | |
978 | if (c == '"') | |
979 | c = * ++ input_line_pointer; | |
026df7c5 | 980 | input_line_pointer++; /* Skip null symbol terminator. */ |
20203fb9 | 981 | as_warn (_(".sect: subsection name ignored")); |
026df7c5 NC |
982 | } |
983 | ||
984 | /* We might still have a '"' to discard, but the character after a | |
d02603dc | 985 | symbol name will be overwritten with a \0 by get_symbol_name() |
026df7c5 NC |
986 | [VK]. */ |
987 | ||
988 | if (c == ',') | |
989 | input_line_pointer = | |
be33c5dd | 990 | tic4x_expression_abs (input_line_pointer, &num); |
026df7c5 NC |
991 | else if (*input_line_pointer == ',') |
992 | { | |
993 | input_line_pointer = | |
be33c5dd | 994 | tic4x_expression_abs (++input_line_pointer, &num); |
026df7c5 NC |
995 | } |
996 | else | |
997 | num = 0; | |
998 | ||
999 | seg = subseg_new (name, num); | |
1000 | if (line_label != NULL) | |
1001 | { | |
1002 | S_SET_SEGMENT (line_label, seg); | |
1003 | symbol_set_frag (line_label, frag_now); | |
1004 | } | |
1005 | ||
1006 | if (bfd_get_section_flags (stdoutput, seg) == SEC_NO_FLAGS) | |
1007 | { | |
1008 | if (!bfd_set_section_flags (stdoutput, seg, SEC_DATA)) | |
20203fb9 | 1009 | as_warn (_("Error setting flags for \"%s\": %s"), name, |
026df7c5 NC |
1010 | bfd_errmsg (bfd_get_error ())); |
1011 | } | |
1012 | ||
d02603dc | 1013 | /* If the last character overwritten by get_symbol_name() was an |
026df7c5 NC |
1014 | end-of-line, we must restore it or the end of the line will not be |
1015 | recognised and scanning extends into the next line, stopping with | |
1016 | an error (blame Volker Kuhlmann <v.kuhlmann@elec.canterbury.ac.nz> | |
1017 | if this is not true). */ | |
1018 | if (is_end_of_line[(unsigned char) c]) | |
1019 | *(--input_line_pointer) = c; | |
1020 | ||
1021 | demand_empty_rest_of_line (); | |
1022 | } | |
1023 | ||
1024 | /* symbol[:] .set value or .set symbol, value */ | |
3739860c | 1025 | static void |
5a49b8ac | 1026 | tic4x_set (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
1027 | { |
1028 | symbolS *symbolP; | |
1029 | ||
1030 | SKIP_WHITESPACE (); | |
1031 | if ((symbolP = line_label) == NULL) | |
1032 | { | |
1033 | char c; | |
1034 | char *name; | |
1035 | ||
d02603dc NC |
1036 | c = get_symbol_name (&name); /* Get terminator. */ |
1037 | if (c == '"') | |
1038 | c = * ++ input_line_pointer; | |
026df7c5 NC |
1039 | if (c != ',') |
1040 | { | |
20203fb9 | 1041 | as_bad (_(".set syntax invalid\n")); |
026df7c5 NC |
1042 | ignore_rest_of_line (); |
1043 | return; | |
1044 | } | |
90e3ad06 | 1045 | ++input_line_pointer; |
026df7c5 NC |
1046 | symbolP = symbol_find_or_make (name); |
1047 | } | |
1048 | else | |
1049 | symbol_table_insert (symbolP); | |
1050 | ||
1051 | pseudo_set (symbolP); | |
1052 | demand_empty_rest_of_line (); | |
1053 | } | |
1054 | ||
1055 | /* [symbol] .usect ["]section-name["], size-in-words [, alignment-flag] */ | |
3739860c | 1056 | static void |
5a49b8ac | 1057 | tic4x_usect (int x ATTRIBUTE_UNUSED) |
026df7c5 NC |
1058 | { |
1059 | char c; | |
1060 | char *name; | |
1061 | char *section_name; | |
1062 | segT seg; | |
2132e3a3 | 1063 | offsetT size, alignment_flag; |
026df7c5 NC |
1064 | segT current_seg; |
1065 | subsegT current_subseg; | |
1066 | ||
1067 | current_seg = now_seg; /* save current seg. */ | |
1068 | current_subseg = now_subseg; /* save current subseg. */ | |
1069 | ||
1070 | SKIP_WHITESPACE (); | |
1071 | if (*input_line_pointer == '"') | |
1072 | input_line_pointer++; | |
d02603dc NC |
1073 | c = get_symbol_name (§ion_name); /* Get terminator. */ |
1074 | if (c == '"') | |
1075 | c = * ++ input_line_pointer; | |
026df7c5 | 1076 | input_line_pointer++; /* Skip null symbol terminator. */ |
a44e2901 | 1077 | name = xstrdup (section_name); |
026df7c5 NC |
1078 | |
1079 | if (c == ',') | |
1080 | input_line_pointer = | |
be33c5dd | 1081 | tic4x_expression_abs (input_line_pointer, &size); |
026df7c5 NC |
1082 | else if (*input_line_pointer == ',') |
1083 | { | |
1084 | input_line_pointer = | |
be33c5dd | 1085 | tic4x_expression_abs (++input_line_pointer, &size); |
026df7c5 NC |
1086 | } |
1087 | else | |
1088 | size = 0; | |
1089 | ||
1090 | /* Read a possibly present third argument (alignment flag) [VK]. */ | |
1091 | if (*input_line_pointer == ',') | |
1092 | { | |
1093 | input_line_pointer = | |
be33c5dd | 1094 | tic4x_expression_abs (++input_line_pointer, &alignment_flag); |
026df7c5 NC |
1095 | } |
1096 | else | |
1097 | alignment_flag = 0; | |
1098 | if (alignment_flag) | |
20203fb9 | 1099 | as_warn (_(".usect: non-zero alignment flag ignored")); |
026df7c5 NC |
1100 | |
1101 | seg = subseg_new (name, 0); | |
1102 | if (line_label != NULL) | |
1103 | { | |
1104 | S_SET_SEGMENT (line_label, seg); | |
1105 | symbol_set_frag (line_label, frag_now); | |
1106 | S_SET_VALUE (line_label, frag_now_fix ()); | |
1107 | } | |
1108 | seg_info (seg)->bss = 1; /* Uninitialised data. */ | |
1109 | if (!bfd_set_section_flags (stdoutput, seg, SEC_ALLOC)) | |
20203fb9 | 1110 | as_warn (_("Error setting flags for \"%s\": %s"), name, |
026df7c5 | 1111 | bfd_errmsg (bfd_get_error ())); |
be33c5dd | 1112 | tic4x_seg_alloc (name, seg, size, line_label); |
026df7c5 NC |
1113 | |
1114 | if (S_GET_STORAGE_CLASS (line_label) != C_EXT) | |
1115 | S_SET_STORAGE_CLASS (line_label, C_STAT); | |
1116 | ||
1117 | subseg_set (current_seg, current_subseg); /* Restore current seg. */ | |
1118 | demand_empty_rest_of_line (); | |
1119 | } | |
1120 | ||
1121 | /* .version cpu-version. */ | |
3739860c | 1122 | static void |
5a49b8ac | 1123 | tic4x_version (int x ATTRIBUTE_UNUSED) |
026df7c5 | 1124 | { |
2132e3a3 | 1125 | offsetT temp; |
026df7c5 NC |
1126 | |
1127 | input_line_pointer = | |
be33c5dd SS |
1128 | tic4x_expression_abs (input_line_pointer, &temp); |
1129 | if (!IS_CPU_TIC3X (temp) && !IS_CPU_TIC4X (temp)) | |
20203fb9 | 1130 | as_bad (_("This assembler does not support processor generation %ld"), |
2132e3a3 | 1131 | (long) temp); |
026df7c5 | 1132 | |
2132e3a3 | 1133 | if (tic4x_cpu && temp != (offsetT) tic4x_cpu) |
20203fb9 | 1134 | as_warn (_("Changing processor generation on fly not supported...")); |
be33c5dd | 1135 | tic4x_cpu = temp; |
026df7c5 NC |
1136 | demand_empty_rest_of_line (); |
1137 | } | |
1138 | ||
3739860c | 1139 | static void |
5a49b8ac | 1140 | tic4x_init_regtable (void) |
026df7c5 NC |
1141 | { |
1142 | unsigned int i; | |
1143 | ||
be33c5dd SS |
1144 | for (i = 0; i < tic3x_num_registers; i++) |
1145 | tic4x_insert_reg (tic3x_registers[i].name, | |
1146 | tic3x_registers[i].regno); | |
026df7c5 | 1147 | |
be33c5dd | 1148 | if (IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 | 1149 | { |
be33c5dd SS |
1150 | /* Add additional Tic4x registers, overriding some C3x ones. */ |
1151 | for (i = 0; i < tic4x_num_registers; i++) | |
1152 | tic4x_insert_reg (tic4x_registers[i].name, | |
1153 | tic4x_registers[i].regno); | |
026df7c5 NC |
1154 | } |
1155 | } | |
1156 | ||
3739860c | 1157 | static void |
5a49b8ac | 1158 | tic4x_init_symbols (void) |
026df7c5 NC |
1159 | { |
1160 | /* The TI tools accept case insensitive versions of these symbols, | |
1161 | we don't ! | |
1162 | ||
1163 | For TI C/Asm 5.0 | |
1164 | ||
1165 | .TMS320xx 30,31,32,40,or 44 set according to -v flag | |
1166 | .C3X or .C3x 1 or 0 1 if -v30,-v31,or -v32 | |
1167 | .C30 1 or 0 1 if -v30 | |
1168 | .C31 1 or 0 1 if -v31 | |
1169 | .C32 1 or 0 1 if -v32 | |
1170 | .C4X or .C4x 1 or 0 1 if -v40, or -v44 | |
1171 | .C40 1 or 0 1 if -v40 | |
1172 | .C44 1 or 0 1 if -v44 | |
1173 | ||
1174 | .REGPARM 1 or 0 1 if -mr option used | |
1175 | .BIGMODEL 1 or 0 1 if -mb option used | |
1176 | ||
1177 | These symbols are currently supported but will be removed in a | |
1178 | later version: | |
1179 | .TMS320C30 1 or 0 1 if -v30,-v31,or -v32 | |
1180 | .TMS320C31 1 or 0 1 if -v31 | |
1181 | .TMS320C32 1 or 0 1 if -v32 | |
1182 | .TMS320C40 1 or 0 1 if -v40, or -v44 | |
1183 | .TMS320C44 1 or 0 1 if -v44 | |
1184 | ||
1185 | Source: TI: TMS320C3x/C4x Assembly Language Tools User's Guide, | |
1186 | 1997, SPRU035C, p. 3-17/3-18. */ | |
be33c5dd | 1187 | tic4x_insert_sym (".REGPARM", tic4x_reg_args); |
3739860c | 1188 | tic4x_insert_sym (".MEMPARM", !tic4x_reg_args); |
be33c5dd SS |
1189 | tic4x_insert_sym (".BIGMODEL", tic4x_big_model); |
1190 | tic4x_insert_sym (".C30INTERRUPT", 0); | |
1191 | tic4x_insert_sym (".TMS320xx", tic4x_cpu == 0 ? 40 : tic4x_cpu); | |
1192 | tic4x_insert_sym (".C3X", tic4x_cpu == 30 || tic4x_cpu == 31 || tic4x_cpu == 32 || tic4x_cpu == 33); | |
1193 | tic4x_insert_sym (".C3x", tic4x_cpu == 30 || tic4x_cpu == 31 || tic4x_cpu == 32 || tic4x_cpu == 33); | |
1194 | tic4x_insert_sym (".C4X", tic4x_cpu == 0 || tic4x_cpu == 40 || tic4x_cpu == 44); | |
1195 | tic4x_insert_sym (".C4x", tic4x_cpu == 0 || tic4x_cpu == 40 || tic4x_cpu == 44); | |
026df7c5 | 1196 | /* Do we need to have the following symbols also in lower case? */ |
be33c5dd SS |
1197 | tic4x_insert_sym (".TMS320C30", tic4x_cpu == 30 || tic4x_cpu == 31 || tic4x_cpu == 32 || tic4x_cpu == 33); |
1198 | tic4x_insert_sym (".tms320C30", tic4x_cpu == 30 || tic4x_cpu == 31 || tic4x_cpu == 32 || tic4x_cpu == 33); | |
1199 | tic4x_insert_sym (".TMS320C31", tic4x_cpu == 31); | |
1200 | tic4x_insert_sym (".tms320C31", tic4x_cpu == 31); | |
1201 | tic4x_insert_sym (".TMS320C32", tic4x_cpu == 32); | |
1202 | tic4x_insert_sym (".tms320C32", tic4x_cpu == 32); | |
1203 | tic4x_insert_sym (".TMS320C33", tic4x_cpu == 33); | |
1204 | tic4x_insert_sym (".tms320C33", tic4x_cpu == 33); | |
1205 | tic4x_insert_sym (".TMS320C40", tic4x_cpu == 40 || tic4x_cpu == 44 || tic4x_cpu == 0); | |
1206 | tic4x_insert_sym (".tms320C40", tic4x_cpu == 40 || tic4x_cpu == 44 || tic4x_cpu == 0); | |
1207 | tic4x_insert_sym (".TMS320C44", tic4x_cpu == 44); | |
1208 | tic4x_insert_sym (".tms320C44", tic4x_cpu == 44); | |
1209 | tic4x_insert_sym (".TMX320C40", 0); /* C40 first pass silicon ? */ | |
1210 | tic4x_insert_sym (".tmx320C40", 0); | |
026df7c5 NC |
1211 | } |
1212 | ||
1213 | /* Insert a new instruction template into hash table. */ | |
3739860c | 1214 | static int |
9c95b521 | 1215 | tic4x_inst_insert (const tic4x_inst_t *inst) |
026df7c5 NC |
1216 | { |
1217 | static char prev_name[16]; | |
1218 | const char *retval = NULL; | |
1219 | ||
1220 | /* Only insert the first name if have several similar entries. */ | |
1221 | if (!strcmp (inst->name, prev_name) || inst->name[0] == '\0') | |
1222 | return 1; | |
1223 | ||
5a49b8ac | 1224 | retval = hash_insert (tic4x_op_hash, inst->name, (void *) inst); |
026df7c5 NC |
1225 | if (retval != NULL) |
1226 | fprintf (stderr, "internal error: can't hash `%s': %s\n", | |
1227 | inst->name, retval); | |
1228 | else | |
1229 | strcpy (prev_name, inst->name); | |
1230 | return retval == NULL; | |
1231 | } | |
1232 | ||
1233 | /* Make a new instruction template. */ | |
be33c5dd | 1234 | static tic4x_inst_t * |
b9bb4a93 | 1235 | tic4x_inst_make (const char *name, unsigned long opcode, const char *args) |
026df7c5 | 1236 | { |
be33c5dd | 1237 | static tic4x_inst_t *insts = NULL; |
026df7c5 | 1238 | static char *names = NULL; |
91d6fa6a | 1239 | static int iindex = 0; |
026df7c5 NC |
1240 | |
1241 | if (insts == NULL) | |
1242 | { | |
1243 | /* Allocate memory to store name strings. */ | |
325801bd | 1244 | names = XNEWVEC (char, 8192); |
026df7c5 | 1245 | /* Allocate memory for additional insts. */ |
325801bd | 1246 | insts = XNEWVEC (tic4x_inst_t, 1024); |
026df7c5 | 1247 | } |
91d6fa6a NC |
1248 | insts[iindex].name = names; |
1249 | insts[iindex].opcode = opcode; | |
1250 | insts[iindex].opmask = 0xffffffff; | |
1251 | insts[iindex].args = args; | |
1252 | iindex++; | |
026df7c5 NC |
1253 | |
1254 | do | |
1255 | *names++ = *name++; | |
1256 | while (*name); | |
1257 | *names++ = '\0'; | |
1258 | ||
91d6fa6a | 1259 | return &insts[iindex - 1]; |
026df7c5 NC |
1260 | } |
1261 | ||
1262 | /* Add instruction template, creating dynamic templates as required. */ | |
3739860c | 1263 | static int |
9c95b521 | 1264 | tic4x_inst_add (const tic4x_inst_t *insts) |
026df7c5 | 1265 | { |
f86f5863 | 1266 | const char *s = insts->name; |
026df7c5 NC |
1267 | char *d; |
1268 | unsigned int i; | |
1269 | int ok = 1; | |
1270 | char name[16]; | |
1271 | ||
1272 | d = name; | |
1273 | ||
9c87d6c7 | 1274 | /* We do not care about INSNs that is not a part of our |
7ba29e2a NC |
1275 | oplevel setting. */ |
1276 | if ((insts->oplevel & tic4x_oplevel) == 0) | |
9c87d6c7 SS |
1277 | return ok; |
1278 | ||
026df7c5 NC |
1279 | while (1) |
1280 | { | |
1281 | switch (*s) | |
1282 | { | |
1283 | case 'B': | |
1284 | case 'C': | |
1285 | /* Dynamically create all the conditional insts. */ | |
be33c5dd | 1286 | for (i = 0; i < tic4x_num_conds; i++) |
026df7c5 | 1287 | { |
be33c5dd | 1288 | tic4x_inst_t *inst; |
026df7c5 | 1289 | int k = 0; |
f86f5863 | 1290 | const char *c = tic4x_conds[i].name; |
026df7c5 NC |
1291 | char *e = d; |
1292 | ||
1293 | while (*c) | |
1294 | *e++ = *c++; | |
1295 | c = s + 1; | |
1296 | while (*c) | |
1297 | *e++ = *c++; | |
1298 | *e = '\0'; | |
1299 | ||
1300 | /* If instruction found then have already processed it. */ | |
be33c5dd | 1301 | if (hash_find (tic4x_op_hash, name)) |
026df7c5 NC |
1302 | return 1; |
1303 | ||
1304 | do | |
1305 | { | |
be33c5dd SS |
1306 | inst = tic4x_inst_make (name, insts[k].opcode + |
1307 | (tic4x_conds[i].cond << | |
026df7c5 NC |
1308 | (*s == 'B' ? 16 : 23)), |
1309 | insts[k].args); | |
1310 | if (k == 0) /* Save strcmp() with following func. */ | |
be33c5dd | 1311 | ok &= tic4x_inst_insert (inst); |
026df7c5 NC |
1312 | k++; |
1313 | } | |
1314 | while (!strcmp (insts->name, | |
1315 | insts[k].name)); | |
1316 | } | |
1317 | return ok; | |
1318 | break; | |
1319 | ||
1320 | case '\0': | |
be33c5dd | 1321 | return tic4x_inst_insert (insts); |
026df7c5 NC |
1322 | break; |
1323 | ||
1324 | default: | |
1325 | *d++ = *s++; | |
1326 | break; | |
1327 | } | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | /* This function is called once, at assembler startup time. It should | |
1332 | set up all the tables, etc., that the MD part of the assembler will | |
1333 | need. */ | |
3739860c | 1334 | void |
5a49b8ac | 1335 | md_begin (void) |
026df7c5 NC |
1336 | { |
1337 | int ok = 1; | |
1338 | unsigned int i; | |
1339 | ||
9c87d6c7 SS |
1340 | /* Setup the proper opcode level according to the |
1341 | commandline parameters */ | |
be33c5dd SS |
1342 | tic4x_oplevel = OP_C3X; |
1343 | ||
1344 | if ( IS_CPU_TIC4X(tic4x_cpu) ) | |
1345 | tic4x_oplevel |= OP_C4X; | |
1346 | ||
1347 | if ( ( tic4x_cpu == 31 && tic4x_revision >= 6) | |
1348 | || (tic4x_cpu == 32 && tic4x_revision >= 2) | |
1349 | || (tic4x_cpu == 33) | |
1350 | || tic4x_enhanced ) | |
1351 | tic4x_oplevel |= OP_ENH; | |
1352 | ||
1353 | if ( ( tic4x_cpu == 30 && tic4x_revision >= 7) | |
1354 | || (tic4x_cpu == 31 && tic4x_revision >= 5) | |
1355 | || (tic4x_cpu == 32) | |
1356 | || tic4x_lowpower ) | |
1357 | tic4x_oplevel |= OP_LPWR; | |
1358 | ||
1359 | if ( ( tic4x_cpu == 30 && tic4x_revision >= 7) | |
1360 | || (tic4x_cpu == 31 && tic4x_revision >= 5) | |
1361 | || (tic4x_cpu == 32) | |
1362 | || (tic4x_cpu == 33) | |
1363 | || (tic4x_cpu == 40 && tic4x_revision >= 5) | |
1364 | || (tic4x_cpu == 44) | |
1365 | || tic4x_idle2 ) | |
1366 | tic4x_oplevel |= OP_IDLE2; | |
9c87d6c7 | 1367 | |
026df7c5 | 1368 | /* Create hash table for mnemonics. */ |
be33c5dd | 1369 | tic4x_op_hash = hash_new (); |
026df7c5 NC |
1370 | |
1371 | /* Create hash table for asg pseudo. */ | |
be33c5dd | 1372 | tic4x_asg_hash = hash_new (); |
026df7c5 NC |
1373 | |
1374 | /* Add mnemonics to hash table, expanding conditional mnemonics on fly. */ | |
be33c5dd | 1375 | for (i = 0; i < tic4x_num_insts; i++) |
9c95b521 | 1376 | ok &= tic4x_inst_add (tic4x_insts + i); |
026df7c5 NC |
1377 | |
1378 | /* Create dummy inst to avoid errors accessing end of table. */ | |
be33c5dd | 1379 | tic4x_inst_make ("", 0, ""); |
026df7c5 NC |
1380 | |
1381 | if (!ok) | |
1382 | as_fatal ("Broken assembler. No assembly attempted."); | |
1383 | ||
1384 | /* Add registers to symbol table. */ | |
be33c5dd | 1385 | tic4x_init_regtable (); |
026df7c5 NC |
1386 | |
1387 | /* Add predefined symbols to symbol table. */ | |
be33c5dd | 1388 | tic4x_init_symbols (); |
026df7c5 NC |
1389 | } |
1390 | ||
3739860c | 1391 | void |
5a49b8ac | 1392 | tic4x_end (void) |
026df7c5 | 1393 | { |
3739860c | 1394 | bfd_set_arch_mach (stdoutput, bfd_arch_tic4x, |
be33c5dd | 1395 | IS_CPU_TIC4X (tic4x_cpu) ? bfd_mach_tic4x : bfd_mach_tic3x); |
026df7c5 NC |
1396 | } |
1397 | ||
3739860c | 1398 | static int |
5a49b8ac AM |
1399 | tic4x_indirect_parse (tic4x_operand_t *operand, |
1400 | const tic4x_indirect_t *indirect) | |
026df7c5 | 1401 | { |
f86f5863 | 1402 | const char *n = indirect->name; |
026df7c5 NC |
1403 | char *s = input_line_pointer; |
1404 | char *b; | |
1405 | symbolS *symbolP; | |
1406 | char name[32]; | |
1407 | ||
1408 | operand->disp = 0; | |
1409 | for (; *n; n++) | |
1410 | { | |
1411 | switch (*n) | |
1412 | { | |
1413 | case 'a': /* Need to match aux register. */ | |
1414 | b = name; | |
be33c5dd | 1415 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 NC |
1416 | if (*s == '%') |
1417 | s++; | |
1418 | #endif | |
278ed128 | 1419 | while (ISALNUM (*s)) |
026df7c5 NC |
1420 | *b++ = *s++; |
1421 | *b++ = '\0'; | |
1422 | if (!(symbolP = symbol_find (name))) | |
1423 | return 0; | |
1424 | ||
1425 | if (S_GET_SEGMENT (symbolP) != reg_section) | |
1426 | return 0; | |
1427 | ||
1428 | operand->aregno = S_GET_VALUE (symbolP); | |
1429 | if (operand->aregno >= REG_AR0 && operand->aregno <= REG_AR7) | |
1430 | break; | |
1431 | ||
20203fb9 | 1432 | as_bad (_("Auxiliary register AR0--AR7 required for indirect")); |
026df7c5 NC |
1433 | return -1; |
1434 | ||
1435 | case 'd': /* Need to match constant for disp. */ | |
be33c5dd | 1436 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 NC |
1437 | if (*s == '%') /* expr() will die if we don't skip this. */ |
1438 | s++; | |
1439 | #endif | |
be33c5dd | 1440 | s = tic4x_expression (s, &operand->expr); |
026df7c5 NC |
1441 | if (operand->expr.X_op != O_constant) |
1442 | return 0; | |
1443 | operand->disp = operand->expr.X_add_number; | |
1444 | if (operand->disp < 0 || operand->disp > 255) | |
1445 | { | |
20203fb9 | 1446 | as_bad (_("Bad displacement %d (require 0--255)\n"), |
026df7c5 NC |
1447 | operand->disp); |
1448 | return -1; | |
1449 | } | |
1450 | break; | |
1451 | ||
1452 | case 'y': /* Need to match IR0. */ | |
1453 | case 'z': /* Need to match IR1. */ | |
be33c5dd | 1454 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 NC |
1455 | if (*s == '%') |
1456 | s++; | |
1457 | #endif | |
be33c5dd | 1458 | s = tic4x_expression (s, &operand->expr); |
026df7c5 NC |
1459 | if (operand->expr.X_op != O_register) |
1460 | return 0; | |
1461 | if (operand->expr.X_add_number != REG_IR0 | |
1462 | && operand->expr.X_add_number != REG_IR1) | |
1463 | { | |
20203fb9 | 1464 | as_bad (_("Index register IR0,IR1 required for displacement")); |
026df7c5 NC |
1465 | return -1; |
1466 | } | |
1467 | ||
1468 | if (*n == 'y' && operand->expr.X_add_number == REG_IR0) | |
1469 | break; | |
1470 | if (*n == 'z' && operand->expr.X_add_number == REG_IR1) | |
1471 | break; | |
1472 | return 0; | |
1473 | ||
1474 | case '(': | |
1475 | if (*s != '(') /* No displacement, assume to be 1. */ | |
1476 | { | |
1477 | operand->disp = 1; | |
1478 | while (*n != ')') | |
1479 | n++; | |
1480 | } | |
1481 | else | |
1482 | s++; | |
1483 | break; | |
1484 | ||
1485 | default: | |
278ed128 | 1486 | if (TOLOWER (*s) != *n) |
026df7c5 NC |
1487 | return 0; |
1488 | s++; | |
1489 | } | |
1490 | } | |
1491 | if (*s != ' ' && *s != ',' && *s != '\0') | |
1492 | return 0; | |
1493 | input_line_pointer = s; | |
1494 | return 1; | |
1495 | } | |
1496 | ||
247b1fe6 | 1497 | static char * |
5a49b8ac | 1498 | tic4x_operand_parse (char *s, tic4x_operand_t *operand) |
026df7c5 NC |
1499 | { |
1500 | unsigned int i; | |
1501 | char c; | |
1502 | int ret; | |
1503 | expressionS *exp = &operand->expr; | |
1504 | char *save = input_line_pointer; | |
1505 | char *str; | |
d3ce72d0 | 1506 | char *new_pointer; |
026df7c5 NC |
1507 | struct hash_entry *entry = NULL; |
1508 | ||
1509 | input_line_pointer = s; | |
1510 | SKIP_WHITESPACE (); | |
1511 | ||
d02603dc | 1512 | c = get_symbol_name (&str); /* Get terminator. */ |
d3ce72d0 | 1513 | new_pointer = input_line_pointer; |
be33c5dd | 1514 | if (strlen (str) && (entry = hash_find (tic4x_asg_hash, str)) != NULL) |
026df7c5 | 1515 | { |
d02603dc | 1516 | (void) restore_line_pointer (c); |
026df7c5 NC |
1517 | input_line_pointer = (char *) entry; |
1518 | } | |
1519 | else | |
1520 | { | |
d02603dc | 1521 | (void) restore_line_pointer (c); |
026df7c5 NC |
1522 | input_line_pointer = str; |
1523 | } | |
1524 | ||
1525 | operand->mode = M_UNKNOWN; | |
1526 | switch (*input_line_pointer) | |
1527 | { | |
be33c5dd | 1528 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 | 1529 | case '%': |
be33c5dd | 1530 | input_line_pointer = tic4x_expression (++input_line_pointer, exp); |
026df7c5 | 1531 | if (exp->X_op != O_register) |
20203fb9 | 1532 | as_bad (_("Expecting a register name")); |
026df7c5 NC |
1533 | operand->mode = M_REGISTER; |
1534 | break; | |
1535 | ||
1536 | case '^': | |
1537 | /* Denotes high 16 bits. */ | |
be33c5dd | 1538 | input_line_pointer = tic4x_expression (++input_line_pointer, exp); |
026df7c5 NC |
1539 | if (exp->X_op == O_constant) |
1540 | operand->mode = M_IMMED; | |
1541 | else if (exp->X_op == O_big) | |
1542 | { | |
1543 | if (exp->X_add_number) | |
20203fb9 | 1544 | as_bad (_("Number too large")); /* bignum required */ |
026df7c5 NC |
1545 | else |
1546 | { | |
be33c5dd | 1547 | tic4x_gen_to_words (generic_floating_point_number, |
026df7c5 NC |
1548 | operand->fwords, S_PRECISION); |
1549 | operand->mode = M_IMMED_F; | |
1550 | } | |
1551 | } | |
1552 | /* Allow ori ^foo, ar0 to be equivalent to ldi .hi.foo, ar0 */ | |
1553 | /* WARNING : The TI C40 assembler cannot do this. */ | |
1554 | else if (exp->X_op == O_symbol) | |
1555 | { | |
1556 | operand->mode = M_HI; | |
1557 | break; | |
1558 | } | |
1559 | ||
1560 | case '#': | |
be33c5dd | 1561 | input_line_pointer = tic4x_expression (++input_line_pointer, exp); |
026df7c5 NC |
1562 | if (exp->X_op == O_constant) |
1563 | operand->mode = M_IMMED; | |
1564 | else if (exp->X_op == O_big) | |
1565 | { | |
1566 | if (exp->X_add_number > 0) | |
20203fb9 | 1567 | as_bad (_("Number too large")); /* bignum required. */ |
026df7c5 NC |
1568 | else |
1569 | { | |
be33c5dd | 1570 | tic4x_gen_to_words (generic_floating_point_number, |
026df7c5 NC |
1571 | operand->fwords, S_PRECISION); |
1572 | operand->mode = M_IMMED_F; | |
1573 | } | |
1574 | } | |
1575 | /* Allow ori foo, ar0 to be equivalent to ldi .lo.foo, ar0 */ | |
1576 | /* WARNING : The TI C40 assembler cannot do this. */ | |
1577 | else if (exp->X_op == O_symbol) | |
1578 | { | |
1579 | operand->mode = M_IMMED; | |
1580 | break; | |
1581 | } | |
1582 | ||
1583 | else | |
20203fb9 | 1584 | as_bad (_("Expecting a constant value")); |
026df7c5 NC |
1585 | break; |
1586 | case '\\': | |
1587 | #endif | |
1588 | case '@': | |
be33c5dd | 1589 | input_line_pointer = tic4x_expression (++input_line_pointer, exp); |
026df7c5 | 1590 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
20203fb9 | 1591 | as_bad (_("Bad direct addressing construct %s"), s); |
026df7c5 NC |
1592 | if (exp->X_op == O_constant) |
1593 | { | |
1594 | if (exp->X_add_number < 0) | |
20203fb9 | 1595 | as_bad (_("Direct value of %ld is not suitable"), |
026df7c5 NC |
1596 | (long) exp->X_add_number); |
1597 | } | |
1598 | operand->mode = M_DIRECT; | |
1599 | break; | |
1600 | ||
1601 | case '*': | |
1602 | ret = -1; | |
be33c5dd SS |
1603 | for (i = 0; i < tic4x_num_indirects; i++) |
1604 | if ((ret = tic4x_indirect_parse (operand, &tic4x_indirects[i]))) | |
026df7c5 NC |
1605 | break; |
1606 | if (ret < 0) | |
1607 | break; | |
be33c5dd | 1608 | if (i < tic4x_num_indirects) |
026df7c5 NC |
1609 | { |
1610 | operand->mode = M_INDIRECT; | |
1611 | /* Indirect addressing mode number. */ | |
be33c5dd | 1612 | operand->expr.X_add_number = tic4x_indirects[i].modn; |
026df7c5 NC |
1613 | /* Convert *+ARn(0) to *ARn etc. Maybe we should |
1614 | squeal about silly ones? */ | |
1615 | if (operand->expr.X_add_number < 0x08 && !operand->disp) | |
1616 | operand->expr.X_add_number = 0x18; | |
1617 | } | |
1618 | else | |
20203fb9 | 1619 | as_bad (_("Unknown indirect addressing mode")); |
026df7c5 NC |
1620 | break; |
1621 | ||
1622 | default: | |
1623 | operand->mode = M_IMMED; /* Assume immediate. */ | |
1624 | str = input_line_pointer; | |
be33c5dd | 1625 | input_line_pointer = tic4x_expression (input_line_pointer, exp); |
026df7c5 NC |
1626 | if (exp->X_op == O_register) |
1627 | { | |
1628 | know (exp->X_add_symbol == 0); | |
1629 | know (exp->X_op_symbol == 0); | |
1630 | operand->mode = M_REGISTER; | |
1631 | break; | |
1632 | } | |
1633 | else if (exp->X_op == O_big) | |
1634 | { | |
1635 | if (exp->X_add_number > 0) | |
20203fb9 | 1636 | as_bad (_("Number too large")); /* bignum required. */ |
026df7c5 NC |
1637 | else |
1638 | { | |
be33c5dd | 1639 | tic4x_gen_to_words (generic_floating_point_number, |
026df7c5 NC |
1640 | operand->fwords, S_PRECISION); |
1641 | operand->mode = M_IMMED_F; | |
1642 | } | |
1643 | break; | |
1644 | } | |
be33c5dd | 1645 | #ifdef TIC4X_ALT_SYNTAX |
026df7c5 NC |
1646 | /* Allow ldi foo, ar0 to be equivalent to ldi @foo, ar0. */ |
1647 | else if (exp->X_op == O_symbol) | |
1648 | { | |
1649 | operand->mode = M_DIRECT; | |
1650 | break; | |
1651 | } | |
1652 | #endif | |
1653 | } | |
1654 | if (entry == NULL) | |
d3ce72d0 | 1655 | new_pointer = input_line_pointer; |
026df7c5 | 1656 | input_line_pointer = save; |
d3ce72d0 | 1657 | return new_pointer; |
026df7c5 NC |
1658 | } |
1659 | ||
3739860c | 1660 | static int |
91d6fa6a | 1661 | tic4x_operands_match (tic4x_inst_t *inst, tic4x_insn_t *tinsn, int check) |
026df7c5 NC |
1662 | { |
1663 | const char *args = inst->args; | |
1664 | unsigned long opcode = inst->opcode; | |
91d6fa6a NC |
1665 | int num_operands = tinsn->num_operands; |
1666 | tic4x_operand_t *operand = tinsn->operands; | |
026df7c5 NC |
1667 | expressionS *exp = &operand->expr; |
1668 | int ret = 1; | |
1669 | int reg; | |
1670 | ||
1671 | /* Build the opcode, checking as we go to make sure that the | |
1672 | operands match. | |
1673 | ||
1674 | If an operand matches, we modify insn or opcode appropriately, | |
1675 | and do a "continue". If an operand fails to match, we "break". */ | |
1676 | ||
91d6fa6a NC |
1677 | tinsn->nchars = 4; /* Instructions always 4 bytes. */ |
1678 | tinsn->reloc = NO_RELOC; | |
1679 | tinsn->pcrel = 0; | |
026df7c5 NC |
1680 | |
1681 | if (*args == '\0') | |
1682 | { | |
91d6fa6a | 1683 | tinsn->opcode = opcode; |
026df7c5 NC |
1684 | return num_operands == 0; |
1685 | } | |
1686 | ||
1687 | for (;; ++args) | |
1688 | { | |
1689 | switch (*args) | |
1690 | { | |
1691 | ||
1692 | case '\0': /* End of args. */ | |
1693 | if (num_operands == 1) | |
1694 | { | |
91d6fa6a | 1695 | tinsn->opcode = opcode; |
026df7c5 NC |
1696 | return ret; |
1697 | } | |
1698 | break; /* Too many operands. */ | |
1699 | ||
1700 | case '#': /* This is only used for ldp. */ | |
1701 | if (operand->mode != M_DIRECT && operand->mode != M_IMMED) | |
1702 | break; | |
1703 | /* While this looks like a direct addressing mode, we actually | |
1704 | use an immediate mode form of ldiu or ldpk instruction. */ | |
1705 | if (exp->X_op == O_constant) | |
1706 | { | |
be33c5dd SS |
1707 | if( ( IS_CPU_TIC4X (tic4x_cpu) && exp->X_add_number <= 65535 ) |
1708 | || ( IS_CPU_TIC3X (tic4x_cpu) && exp->X_add_number <= 255 ) ) | |
44287f60 SS |
1709 | { |
1710 | INSERTS (opcode, exp->X_add_number, 15, 0); | |
1711 | continue; | |
1712 | } | |
1713 | else | |
1714 | { | |
9c87d6c7 | 1715 | if (!check) |
20203fb9 | 1716 | as_bad (_("Immediate value of %ld is too large for ldf"), |
9c87d6c7 | 1717 | (long) exp->X_add_number); |
44287f60 SS |
1718 | ret = -1; |
1719 | continue; | |
1720 | } | |
026df7c5 NC |
1721 | } |
1722 | else if (exp->X_op == O_symbol) | |
1723 | { | |
91d6fa6a NC |
1724 | tinsn->reloc = BFD_RELOC_HI16; |
1725 | tinsn->exp = *exp; | |
026df7c5 NC |
1726 | continue; |
1727 | } | |
1728 | break; /* Not direct (dp) addressing. */ | |
1729 | ||
1730 | case '@': /* direct. */ | |
1731 | if (operand->mode != M_DIRECT) | |
1732 | break; | |
1733 | if (exp->X_op == O_constant) | |
da91385d SS |
1734 | { |
1735 | /* Store only the 16 LSBs of the number. */ | |
1736 | INSERTS (opcode, exp->X_add_number, 15, 0); | |
1737 | continue; | |
026df7c5 NC |
1738 | } |
1739 | else if (exp->X_op == O_symbol) | |
1740 | { | |
91d6fa6a NC |
1741 | tinsn->reloc = BFD_RELOC_LO16; |
1742 | tinsn->exp = *exp; | |
026df7c5 NC |
1743 | continue; |
1744 | } | |
1745 | break; /* Not direct addressing. */ | |
1746 | ||
1747 | case 'A': | |
1748 | if (operand->mode != M_REGISTER) | |
1749 | break; | |
1750 | reg = exp->X_add_number; | |
1751 | if (reg >= REG_AR0 && reg <= REG_AR7) | |
1752 | INSERTU (opcode, reg - REG_AR0, 24, 22); | |
1753 | else | |
1754 | { | |
9c87d6c7 | 1755 | if (!check) |
20203fb9 | 1756 | as_bad (_("Destination register must be ARn")); |
026df7c5 NC |
1757 | ret = -1; |
1758 | } | |
1759 | continue; | |
1760 | ||
1761 | case 'B': /* Unsigned integer immediate. */ | |
1762 | /* Allow br label or br @label. */ | |
1763 | if (operand->mode != M_IMMED && operand->mode != M_DIRECT) | |
1764 | break; | |
1765 | if (exp->X_op == O_constant) | |
1766 | { | |
1767 | if (exp->X_add_number < (1 << 24)) | |
1768 | { | |
1769 | INSERTU (opcode, exp->X_add_number, 23, 0); | |
1770 | continue; | |
1771 | } | |
1772 | else | |
1773 | { | |
9c87d6c7 | 1774 | if (!check) |
20203fb9 | 1775 | as_bad (_("Immediate value of %ld is too large"), |
9c87d6c7 | 1776 | (long) exp->X_add_number); |
026df7c5 NC |
1777 | ret = -1; |
1778 | continue; | |
1779 | } | |
1780 | } | |
be33c5dd | 1781 | if (IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 | 1782 | { |
91d6fa6a NC |
1783 | tinsn->reloc = BFD_RELOC_24_PCREL; |
1784 | tinsn->pcrel = 1; | |
026df7c5 NC |
1785 | } |
1786 | else | |
1787 | { | |
91d6fa6a NC |
1788 | tinsn->reloc = BFD_RELOC_24; |
1789 | tinsn->pcrel = 0; | |
026df7c5 | 1790 | } |
91d6fa6a | 1791 | tinsn->exp = *exp; |
026df7c5 NC |
1792 | continue; |
1793 | ||
1794 | case 'C': | |
be33c5dd | 1795 | if (!IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 NC |
1796 | break; |
1797 | if (operand->mode != M_INDIRECT) | |
1798 | break; | |
44287f60 | 1799 | /* Require either *+ARn(disp) or *ARn. */ |
026df7c5 NC |
1800 | if (operand->expr.X_add_number != 0 |
1801 | && operand->expr.X_add_number != 0x18) | |
1802 | { | |
9c87d6c7 | 1803 | if (!check) |
20203fb9 | 1804 | as_bad (_("Invalid indirect addressing mode")); |
9c87d6c7 | 1805 | ret = -1; |
026df7c5 NC |
1806 | continue; |
1807 | } | |
1808 | INSERTU (opcode, operand->aregno - REG_AR0, 2, 0); | |
1809 | INSERTU (opcode, operand->disp, 7, 3); | |
1810 | continue; | |
1811 | ||
1812 | case 'E': | |
1813 | if (!(operand->mode == M_REGISTER)) | |
1814 | break; | |
1815 | INSERTU (opcode, exp->X_add_number, 7, 0); | |
1816 | continue; | |
1817 | ||
44287f60 SS |
1818 | case 'e': |
1819 | if (!(operand->mode == M_REGISTER)) | |
1820 | break; | |
1821 | reg = exp->X_add_number; | |
3739860c | 1822 | if ( (reg >= REG_R0 && reg <= REG_R7) |
be33c5dd | 1823 | || (IS_CPU_TIC4X (tic4x_cpu) && reg >= REG_R8 && reg <= REG_R11) ) |
44287f60 SS |
1824 | INSERTU (opcode, reg, 7, 0); |
1825 | else | |
1826 | { | |
9c87d6c7 | 1827 | if (!check) |
20203fb9 | 1828 | as_bad (_("Register must be Rn")); |
44287f60 SS |
1829 | ret = -1; |
1830 | } | |
1831 | continue; | |
1832 | ||
026df7c5 NC |
1833 | case 'F': |
1834 | if (operand->mode != M_IMMED_F | |
1835 | && !(operand->mode == M_IMMED && exp->X_op == O_constant)) | |
1836 | break; | |
1837 | ||
1838 | if (operand->mode != M_IMMED_F) | |
1839 | { | |
1840 | /* OK, we 've got something like cmpf 0, r0 | |
1841 | Why can't they stick in a bloody decimal point ?! */ | |
1842 | char string[16]; | |
1843 | ||
1844 | /* Create floating point number string. */ | |
1845 | sprintf (string, "%d.0", (int) exp->X_add_number); | |
be33c5dd | 1846 | tic4x_atof (string, 's', operand->fwords); |
026df7c5 NC |
1847 | } |
1848 | ||
1849 | INSERTU (opcode, operand->fwords[0], 15, 0); | |
1850 | continue; | |
1851 | ||
1852 | case 'G': | |
1853 | if (operand->mode != M_REGISTER) | |
1854 | break; | |
1855 | INSERTU (opcode, exp->X_add_number, 15, 8); | |
1856 | continue; | |
1857 | ||
44287f60 SS |
1858 | case 'g': |
1859 | if (operand->mode != M_REGISTER) | |
1860 | break; | |
1861 | reg = exp->X_add_number; | |
3739860c | 1862 | if ( (reg >= REG_R0 && reg <= REG_R7) |
be33c5dd | 1863 | || (IS_CPU_TIC4X (tic4x_cpu) && reg >= REG_R8 && reg <= REG_R11) ) |
44287f60 SS |
1864 | INSERTU (opcode, reg, 15, 8); |
1865 | else | |
1866 | { | |
9c87d6c7 | 1867 | if (!check) |
20203fb9 | 1868 | as_bad (_("Register must be Rn")); |
44287f60 SS |
1869 | ret = -1; |
1870 | } | |
1871 | continue; | |
1872 | ||
026df7c5 NC |
1873 | case 'H': |
1874 | if (operand->mode != M_REGISTER) | |
1875 | break; | |
1876 | reg = exp->X_add_number; | |
1877 | if (reg >= REG_R0 && reg <= REG_R7) | |
1878 | INSERTU (opcode, reg - REG_R0, 18, 16); | |
1879 | else | |
1880 | { | |
9c87d6c7 | 1881 | if (!check) |
20203fb9 | 1882 | as_bad (_("Register must be R0--R7")); |
026df7c5 NC |
1883 | ret = -1; |
1884 | } | |
1885 | continue; | |
1886 | ||
9c87d6c7 SS |
1887 | case 'i': |
1888 | if ( operand->mode == M_REGISTER | |
be33c5dd | 1889 | && tic4x_oplevel & OP_ENH ) |
9c87d6c7 SS |
1890 | { |
1891 | reg = exp->X_add_number; | |
1892 | INSERTU (opcode, reg, 4, 0); | |
1893 | INSERTU (opcode, 7, 7, 5); | |
1894 | continue; | |
1895 | } | |
1896 | /* Fallthrough */ | |
1897 | ||
026df7c5 NC |
1898 | case 'I': |
1899 | if (operand->mode != M_INDIRECT) | |
1900 | break; | |
1901 | if (operand->disp != 0 && operand->disp != 1) | |
1902 | { | |
be33c5dd | 1903 | if (IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 | 1904 | break; |
9c87d6c7 | 1905 | if (!check) |
20203fb9 | 1906 | as_bad (_("Invalid indirect addressing mode displacement %d"), |
9c87d6c7 | 1907 | operand->disp); |
026df7c5 NC |
1908 | ret = -1; |
1909 | continue; | |
1910 | } | |
1911 | INSERTU (opcode, operand->aregno - REG_AR0, 2, 0); | |
1912 | INSERTU (opcode, operand->expr.X_add_number, 7, 3); | |
1913 | continue; | |
1914 | ||
9c87d6c7 SS |
1915 | case 'j': |
1916 | if ( operand->mode == M_REGISTER | |
be33c5dd | 1917 | && tic4x_oplevel & OP_ENH ) |
9c87d6c7 SS |
1918 | { |
1919 | reg = exp->X_add_number; | |
1920 | INSERTU (opcode, reg, 12, 8); | |
1921 | INSERTU (opcode, 7, 15, 13); | |
1922 | continue; | |
1923 | } | |
1924 | /* Fallthrough */ | |
1925 | ||
026df7c5 NC |
1926 | case 'J': |
1927 | if (operand->mode != M_INDIRECT) | |
1928 | break; | |
1929 | if (operand->disp != 0 && operand->disp != 1) | |
1930 | { | |
be33c5dd | 1931 | if (IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 | 1932 | break; |
9c87d6c7 | 1933 | if (!check) |
20203fb9 | 1934 | as_bad (_("Invalid indirect addressing mode displacement %d"), |
9c87d6c7 | 1935 | operand->disp); |
026df7c5 NC |
1936 | ret = -1; |
1937 | continue; | |
1938 | } | |
1939 | INSERTU (opcode, operand->aregno - REG_AR0, 10, 8); | |
1940 | INSERTU (opcode, operand->expr.X_add_number, 15, 11); | |
1941 | continue; | |
1942 | ||
1943 | case 'K': | |
1944 | if (operand->mode != M_REGISTER) | |
1945 | break; | |
1946 | reg = exp->X_add_number; | |
1947 | if (reg >= REG_R0 && reg <= REG_R7) | |
1948 | INSERTU (opcode, reg - REG_R0, 21, 19); | |
1949 | else | |
1950 | { | |
9c87d6c7 | 1951 | if (!check) |
20203fb9 | 1952 | as_bad (_("Register must be R0--R7")); |
026df7c5 NC |
1953 | ret = -1; |
1954 | } | |
1955 | continue; | |
1956 | ||
1957 | case 'L': | |
1958 | if (operand->mode != M_REGISTER) | |
1959 | break; | |
1960 | reg = exp->X_add_number; | |
1961 | if (reg >= REG_R0 && reg <= REG_R7) | |
1962 | INSERTU (opcode, reg - REG_R0, 24, 22); | |
1963 | else | |
1964 | { | |
9c87d6c7 | 1965 | if (!check) |
20203fb9 | 1966 | as_bad (_("Register must be R0--R7")); |
026df7c5 NC |
1967 | ret = -1; |
1968 | } | |
1969 | continue; | |
1970 | ||
1971 | case 'M': | |
1972 | if (operand->mode != M_REGISTER) | |
1973 | break; | |
1974 | reg = exp->X_add_number; | |
1975 | if (reg == REG_R2 || reg == REG_R3) | |
1976 | INSERTU (opcode, reg - REG_R2, 22, 22); | |
1977 | else | |
1978 | { | |
9c87d6c7 | 1979 | if (!check) |
20203fb9 | 1980 | as_bad (_("Destination register must be R2 or R3")); |
026df7c5 NC |
1981 | ret = -1; |
1982 | } | |
1983 | continue; | |
1984 | ||
1985 | case 'N': | |
1986 | if (operand->mode != M_REGISTER) | |
1987 | break; | |
1988 | reg = exp->X_add_number; | |
1989 | if (reg == REG_R0 || reg == REG_R1) | |
1990 | INSERTU (opcode, reg - REG_R0, 23, 23); | |
1991 | else | |
1992 | { | |
9c87d6c7 | 1993 | if (!check) |
20203fb9 | 1994 | as_bad (_("Destination register must be R0 or R1")); |
026df7c5 NC |
1995 | ret = -1; |
1996 | } | |
1997 | continue; | |
1998 | ||
1999 | case 'O': | |
be33c5dd | 2000 | if (!IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 NC |
2001 | break; |
2002 | if (operand->mode != M_INDIRECT) | |
2003 | break; | |
2004 | /* Require either *+ARn(disp) or *ARn. */ | |
2005 | if (operand->expr.X_add_number != 0 | |
2006 | && operand->expr.X_add_number != 0x18) | |
2007 | { | |
9c87d6c7 | 2008 | if (!check) |
20203fb9 | 2009 | as_bad (_("Invalid indirect addressing mode")); |
026df7c5 NC |
2010 | ret = -1; |
2011 | continue; | |
2012 | } | |
2013 | INSERTU (opcode, operand->aregno - REG_AR0, 10, 8); | |
2014 | INSERTU (opcode, operand->disp, 15, 11); | |
2015 | continue; | |
2016 | ||
2017 | case 'P': /* PC relative displacement. */ | |
2018 | /* Allow br label or br @label. */ | |
2019 | if (operand->mode != M_IMMED && operand->mode != M_DIRECT) | |
2020 | break; | |
2021 | if (exp->X_op == O_constant) | |
2022 | { | |
2023 | if (exp->X_add_number >= -32768 && exp->X_add_number <= 32767) | |
2024 | { | |
2025 | INSERTS (opcode, exp->X_add_number, 15, 0); | |
2026 | continue; | |
2027 | } | |
2028 | else | |
2029 | { | |
9c87d6c7 | 2030 | if (!check) |
20203fb9 | 2031 | as_bad (_("Displacement value of %ld is too large"), |
9c87d6c7 | 2032 | (long) exp->X_add_number); |
026df7c5 NC |
2033 | ret = -1; |
2034 | continue; | |
2035 | } | |
2036 | } | |
91d6fa6a NC |
2037 | tinsn->reloc = BFD_RELOC_16_PCREL; |
2038 | tinsn->pcrel = 1; | |
2039 | tinsn->exp = *exp; | |
026df7c5 NC |
2040 | continue; |
2041 | ||
2042 | case 'Q': | |
2043 | if (operand->mode != M_REGISTER) | |
2044 | break; | |
2045 | reg = exp->X_add_number; | |
2046 | INSERTU (opcode, reg, 15, 0); | |
2047 | continue; | |
2048 | ||
44287f60 SS |
2049 | case 'q': |
2050 | if (operand->mode != M_REGISTER) | |
2051 | break; | |
2052 | reg = exp->X_add_number; | |
3739860c | 2053 | if ( (reg >= REG_R0 && reg <= REG_R7) |
be33c5dd | 2054 | || (IS_CPU_TIC4X (tic4x_cpu) && reg >= REG_R8 && reg <= REG_R11) ) |
44287f60 SS |
2055 | INSERTU (opcode, reg, 15, 0); |
2056 | else | |
2057 | { | |
9c87d6c7 | 2058 | if (!check) |
20203fb9 | 2059 | as_bad (_("Register must be Rn")); |
44287f60 SS |
2060 | ret = -1; |
2061 | } | |
2062 | continue; | |
2063 | ||
026df7c5 NC |
2064 | case 'R': |
2065 | if (operand->mode != M_REGISTER) | |
2066 | break; | |
2067 | reg = exp->X_add_number; | |
2068 | INSERTU (opcode, reg, 20, 16); | |
2069 | continue; | |
2070 | ||
44287f60 SS |
2071 | case 'r': |
2072 | if (operand->mode != M_REGISTER) | |
2073 | break; | |
2074 | reg = exp->X_add_number; | |
3739860c | 2075 | if ( (reg >= REG_R0 && reg <= REG_R7) |
be33c5dd | 2076 | || (IS_CPU_TIC4X (tic4x_cpu) && reg >= REG_R8 && reg <= REG_R11) ) |
44287f60 SS |
2077 | INSERTU (opcode, reg, 20, 16); |
2078 | else | |
2079 | { | |
9c87d6c7 | 2080 | if (!check) |
20203fb9 | 2081 | as_bad (_("Register must be Rn")); |
44287f60 SS |
2082 | ret = -1; |
2083 | } | |
2084 | continue; | |
2085 | ||
026df7c5 NC |
2086 | case 'S': /* Short immediate int. */ |
2087 | if (operand->mode != M_IMMED && operand->mode != M_HI) | |
2088 | break; | |
2089 | if (exp->X_op == O_big) | |
2090 | { | |
9c87d6c7 | 2091 | if (!check) |
20203fb9 | 2092 | as_bad (_("Floating point number not valid in expression")); |
026df7c5 NC |
2093 | ret = -1; |
2094 | continue; | |
2095 | } | |
2096 | if (exp->X_op == O_constant) | |
2097 | { | |
2098 | if (exp->X_add_number >= -32768 && exp->X_add_number <= 65535) | |
2099 | { | |
2100 | INSERTS (opcode, exp->X_add_number, 15, 0); | |
2101 | continue; | |
2102 | } | |
2103 | else | |
2104 | { | |
9c87d6c7 | 2105 | if (!check) |
20203fb9 | 2106 | as_bad (_("Signed immediate value %ld too large"), |
9c87d6c7 | 2107 | (long) exp->X_add_number); |
026df7c5 NC |
2108 | ret = -1; |
2109 | continue; | |
2110 | } | |
2111 | } | |
2112 | else if (exp->X_op == O_symbol) | |
2113 | { | |
2114 | if (operand->mode == M_HI) | |
2115 | { | |
91d6fa6a | 2116 | tinsn->reloc = BFD_RELOC_HI16; |
026df7c5 NC |
2117 | } |
2118 | else | |
2119 | { | |
91d6fa6a | 2120 | tinsn->reloc = BFD_RELOC_LO16; |
026df7c5 | 2121 | } |
91d6fa6a | 2122 | tinsn->exp = *exp; |
026df7c5 NC |
2123 | continue; |
2124 | } | |
2125 | /* Handle cases like ldi foo - $, ar0 where foo | |
2126 | is a forward reference. Perhaps we should check | |
2127 | for X_op == O_symbol and disallow things like | |
2128 | ldi foo, ar0. */ | |
91d6fa6a NC |
2129 | tinsn->reloc = BFD_RELOC_16; |
2130 | tinsn->exp = *exp; | |
026df7c5 NC |
2131 | continue; |
2132 | ||
be33c5dd SS |
2133 | case 'T': /* 5-bit immediate value for tic4x stik. */ |
2134 | if (!IS_CPU_TIC4X (tic4x_cpu)) | |
026df7c5 NC |
2135 | break; |
2136 | if (operand->mode != M_IMMED) | |
2137 | break; | |
2138 | if (exp->X_op == O_constant) | |
2139 | { | |
2140 | if (exp->X_add_number < 16 && exp->X_add_number >= -16) | |
2141 | { | |
2142 | INSERTS (opcode, exp->X_add_number, 20, 16); | |
2143 | continue; | |
2144 | } | |
2145 | else | |
2146 | { | |
9c87d6c7 | 2147 | if (!check) |
20203fb9 | 2148 | as_bad (_("Immediate value of %ld is too large"), |
9c87d6c7 | 2149 | (long) exp->X_add_number); |
026df7c5 NC |
2150 | ret = -1; |
2151 | continue; | |
2152 | } | |
2153 | } | |
2154 | break; /* No relocations allowed. */ | |
2155 | ||
2156 | case 'U': /* Unsigned integer immediate. */ | |
2157 | if (operand->mode != M_IMMED && operand->mode != M_HI) | |
2158 | break; | |
2159 | if (exp->X_op == O_constant) | |
2160 | { | |
2161 | if (exp->X_add_number < (1 << 16) && exp->X_add_number >= 0) | |
2162 | { | |
2163 | INSERTU (opcode, exp->X_add_number, 15, 0); | |
2164 | continue; | |
2165 | } | |
2166 | else | |
2167 | { | |
9c87d6c7 | 2168 | if (!check) |
20203fb9 | 2169 | as_bad (_("Unsigned immediate value %ld too large"), |
9c87d6c7 | 2170 | (long) exp->X_add_number); |
026df7c5 NC |
2171 | ret = -1; |
2172 | continue; | |
2173 | } | |
2174 | } | |
2175 | else if (exp->X_op == O_symbol) | |
2176 | { | |
2177 | if (operand->mode == M_HI) | |
91d6fa6a | 2178 | tinsn->reloc = BFD_RELOC_HI16; |
026df7c5 | 2179 | else |
91d6fa6a | 2180 | tinsn->reloc = BFD_RELOC_LO16; |
026df7c5 | 2181 | |
91d6fa6a | 2182 | tinsn->exp = *exp; |
026df7c5 NC |
2183 | continue; |
2184 | } | |
91d6fa6a NC |
2185 | tinsn->reloc = BFD_RELOC_16; |
2186 | tinsn->exp = *exp; | |
026df7c5 NC |
2187 | continue; |
2188 | ||
2189 | case 'V': /* Trap numbers (immediate field). */ | |
2190 | if (operand->mode != M_IMMED) | |
2191 | break; | |
2192 | if (exp->X_op == O_constant) | |
2193 | { | |
be33c5dd | 2194 | if (exp->X_add_number < 512 && IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 NC |
2195 | { |
2196 | INSERTU (opcode, exp->X_add_number, 8, 0); | |
2197 | continue; | |
2198 | } | |
be33c5dd | 2199 | else if (exp->X_add_number < 32 && IS_CPU_TIC3X (tic4x_cpu)) |
026df7c5 NC |
2200 | { |
2201 | INSERTU (opcode, exp->X_add_number | 0x20, 4, 0); | |
2202 | continue; | |
2203 | } | |
2204 | else | |
2205 | { | |
9c87d6c7 | 2206 | if (!check) |
20203fb9 | 2207 | as_bad (_("Immediate value of %ld is too large"), |
9c87d6c7 | 2208 | (long) exp->X_add_number); |
026df7c5 NC |
2209 | ret = -1; |
2210 | continue; | |
2211 | } | |
2212 | } | |
2213 | break; /* No relocations allowed. */ | |
2214 | ||
2215 | case 'W': /* Short immediate int (0--7). */ | |
be33c5dd | 2216 | if (!IS_CPU_TIC4X (tic4x_cpu)) |
026df7c5 NC |
2217 | break; |
2218 | if (operand->mode != M_IMMED) | |
2219 | break; | |
2220 | if (exp->X_op == O_big) | |
2221 | { | |
9c87d6c7 | 2222 | if (!check) |
20203fb9 | 2223 | as_bad (_("Floating point number not valid in expression")); |
026df7c5 NC |
2224 | ret = -1; |
2225 | continue; | |
2226 | } | |
2227 | if (exp->X_op == O_constant) | |
2228 | { | |
2229 | if (exp->X_add_number >= -256 && exp->X_add_number <= 127) | |
2230 | { | |
2231 | INSERTS (opcode, exp->X_add_number, 7, 0); | |
2232 | continue; | |
2233 | } | |
2234 | else | |
2235 | { | |
9c87d6c7 | 2236 | if (!check) |
20203fb9 | 2237 | as_bad (_("Immediate value %ld too large"), |
9c87d6c7 | 2238 | (long) exp->X_add_number); |
026df7c5 NC |
2239 | ret = -1; |
2240 | continue; | |
2241 | } | |
2242 | } | |
91d6fa6a NC |
2243 | tinsn->reloc = BFD_RELOC_16; |
2244 | tinsn->exp = *exp; | |
026df7c5 NC |
2245 | continue; |
2246 | ||
be33c5dd | 2247 | case 'X': /* Expansion register for tic4x. */ |
026df7c5 NC |
2248 | if (operand->mode != M_REGISTER) |
2249 | break; | |
2250 | reg = exp->X_add_number; | |
2251 | if (reg >= REG_IVTP && reg <= REG_TVTP) | |
2252 | INSERTU (opcode, reg - REG_IVTP, 4, 0); | |
2253 | else | |
2254 | { | |
9c87d6c7 | 2255 | if (!check) |
20203fb9 | 2256 | as_bad (_("Register must be ivtp or tvtp")); |
026df7c5 NC |
2257 | ret = -1; |
2258 | } | |
2259 | continue; | |
2260 | ||
be33c5dd | 2261 | case 'Y': /* Address register for tic4x lda. */ |
026df7c5 NC |
2262 | if (operand->mode != M_REGISTER) |
2263 | break; | |
2264 | reg = exp->X_add_number; | |
2265 | if (reg >= REG_AR0 && reg <= REG_SP) | |
2266 | INSERTU (opcode, reg, 20, 16); | |
2267 | else | |
2268 | { | |
9c87d6c7 | 2269 | if (!check) |
20203fb9 | 2270 | as_bad (_("Register must be address register")); |
026df7c5 NC |
2271 | ret = -1; |
2272 | } | |
2273 | continue; | |
2274 | ||
be33c5dd | 2275 | case 'Z': /* Expansion register for tic4x. */ |
026df7c5 NC |
2276 | if (operand->mode != M_REGISTER) |
2277 | break; | |
2278 | reg = exp->X_add_number; | |
2279 | if (reg >= REG_IVTP && reg <= REG_TVTP) | |
2280 | INSERTU (opcode, reg - REG_IVTP, 20, 16); | |
2281 | else | |
2282 | { | |
9c87d6c7 | 2283 | if (!check) |
20203fb9 | 2284 | as_bad (_("Register must be ivtp or tvtp")); |
026df7c5 NC |
2285 | ret = -1; |
2286 | } | |
2287 | continue; | |
2288 | ||
2289 | case '*': | |
2290 | if (operand->mode != M_INDIRECT) | |
2291 | break; | |
2292 | INSERTS (opcode, operand->disp, 7, 0); | |
2293 | INSERTU (opcode, operand->aregno - REG_AR0, 10, 8); | |
2294 | INSERTU (opcode, operand->expr.X_add_number, 15, 11); | |
2295 | continue; | |
2296 | ||
2297 | case '|': /* treat as `,' if have ldi_ldi form. */ | |
91d6fa6a | 2298 | if (tinsn->parallel) |
026df7c5 NC |
2299 | { |
2300 | if (--num_operands < 0) | |
2301 | break; /* Too few operands. */ | |
2302 | operand++; | |
2303 | if (operand->mode != M_PARALLEL) | |
2304 | break; | |
2305 | } | |
2306 | /* Fall through. */ | |
2307 | ||
2308 | case ',': /* Another operand. */ | |
2309 | if (--num_operands < 0) | |
2310 | break; /* Too few operands. */ | |
2311 | operand++; | |
2312 | exp = &operand->expr; | |
2313 | continue; | |
2314 | ||
2315 | case ';': /* Another optional operand. */ | |
2316 | if (num_operands == 1 || operand[1].mode == M_PARALLEL) | |
2317 | continue; | |
2318 | if (--num_operands < 0) | |
2319 | break; /* Too few operands. */ | |
2320 | operand++; | |
2321 | exp = &operand->expr; | |
2322 | continue; | |
2323 | ||
2324 | default: | |
2325 | BAD_CASE (*args); | |
2326 | } | |
2327 | return 0; | |
2328 | } | |
2329 | } | |
2330 | ||
9c87d6c7 | 2331 | static void |
91d6fa6a | 2332 | tic4x_insn_check (tic4x_insn_t *tinsn) |
9c87d6c7 | 2333 | { |
3739860c | 2334 | |
91d6fa6a | 2335 | if (!strcmp (tinsn->name, "lda")) |
9c87d6c7 | 2336 | { |
91d6fa6a | 2337 | if (tinsn->num_operands < 2 || tinsn->num_operands > 2) |
9c87d6c7 SS |
2338 | as_fatal ("Illegal internal LDA insn definition"); |
2339 | ||
91d6fa6a NC |
2340 | if (tinsn->operands[0].mode == M_REGISTER |
2341 | && tinsn->operands[1].mode == M_REGISTER | |
2342 | && tinsn->operands[0].expr.X_add_number == tinsn->operands[1].expr.X_add_number ) | |
20203fb9 | 2343 | as_bad (_("Source and destination register should not be equal")); |
9c87d6c7 | 2344 | } |
91d6fa6a NC |
2345 | else if (!strcmp (tinsn->name, "ldi_ldi") |
2346 | || !strcmp (tinsn->name, "ldi1_ldi2") | |
2347 | || !strcmp (tinsn->name, "ldi2_ldi1") | |
2348 | || !strcmp (tinsn->name, "ldf_ldf") | |
2349 | || !strcmp (tinsn->name, "ldf1_ldf2") | |
2350 | || !strcmp (tinsn->name, "ldf2_ldf1") ) | |
9c87d6c7 | 2351 | { |
88fd0449 | 2352 | if (tinsn->num_operands < 4 || tinsn->num_operands > 5) |
91d6fa6a | 2353 | as_fatal ("Illegal internal %s insn definition", tinsn->name); |
3739860c | 2354 | |
91d6fa6a NC |
2355 | if (tinsn->operands[1].mode == M_REGISTER |
2356 | && tinsn->operands[tinsn->num_operands-1].mode == M_REGISTER | |
2357 | && tinsn->operands[1].expr.X_add_number == tinsn->operands[tinsn->num_operands-1].expr.X_add_number ) | |
20203fb9 | 2358 | as_warn (_("Equal parallell destination registers, one result will be discarded")); |
9c87d6c7 SS |
2359 | } |
2360 | } | |
2361 | ||
3739860c | 2362 | static void |
91d6fa6a | 2363 | tic4x_insn_output (tic4x_insn_t *tinsn) |
026df7c5 NC |
2364 | { |
2365 | char *dst; | |
2366 | ||
2367 | /* Grab another fragment for opcode. */ | |
91d6fa6a | 2368 | dst = frag_more (tinsn->nchars); |
026df7c5 NC |
2369 | |
2370 | /* Put out opcode word as a series of bytes in little endian order. */ | |
91d6fa6a | 2371 | md_number_to_chars (dst, tinsn->opcode, tinsn->nchars); |
026df7c5 NC |
2372 | |
2373 | /* Put out the symbol-dependent stuff. */ | |
91d6fa6a | 2374 | if (tinsn->reloc != NO_RELOC) |
026df7c5 NC |
2375 | { |
2376 | /* Where is the offset into the fragment for this instruction. */ | |
2377 | fix_new_exp (frag_now, | |
2378 | dst - frag_now->fr_literal, /* where */ | |
91d6fa6a NC |
2379 | tinsn->nchars, /* size */ |
2380 | &tinsn->exp, | |
2381 | tinsn->pcrel, | |
2382 | tinsn->reloc); | |
026df7c5 NC |
2383 | } |
2384 | } | |
2385 | ||
2386 | /* Parse the operands. */ | |
3739860c | 2387 | static int |
5a49b8ac | 2388 | tic4x_operands_parse (char *s, tic4x_operand_t *operands, int num_operands) |
026df7c5 NC |
2389 | { |
2390 | if (!*s) | |
2391 | return num_operands; | |
2392 | ||
2393 | do | |
be33c5dd SS |
2394 | s = tic4x_operand_parse (s, &operands[num_operands++]); |
2395 | while (num_operands < TIC4X_OPERANDS_MAX && *s++ == ','); | |
026df7c5 | 2396 | |
be33c5dd | 2397 | if (num_operands > TIC4X_OPERANDS_MAX) |
026df7c5 | 2398 | { |
20203fb9 | 2399 | as_bad (_("Too many operands scanned")); |
026df7c5 NC |
2400 | return -1; |
2401 | } | |
2402 | return num_operands; | |
2403 | } | |
2404 | ||
2405 | /* Assemble a single instruction. Its label has already been handled | |
2406 | by the generic front end. We just parse mnemonic and operands, and | |
2407 | produce the bytes of data and relocation. */ | |
3739860c | 2408 | void |
5a49b8ac | 2409 | md_assemble (char *str) |
026df7c5 NC |
2410 | { |
2411 | int ok = 0; | |
2412 | char *s; | |
2413 | int i; | |
2414 | int parsed = 0; | |
77ab336e | 2415 | size_t len; |
be33c5dd SS |
2416 | tic4x_inst_t *inst; /* Instruction template. */ |
2417 | tic4x_inst_t *first_inst; | |
026df7c5 | 2418 | |
a1f3c24c SS |
2419 | /* Scan for parallel operators */ |
2420 | if (str) | |
2421 | { | |
2422 | s = str; | |
2423 | while (*s && *s != '|') | |
2424 | s++; | |
3739860c | 2425 | |
a1f3c24c SS |
2426 | if (*s && s[1]=='|') |
2427 | { | |
2428 | if(insn->parallel) | |
2429 | { | |
20203fb9 | 2430 | as_bad (_("Parallel opcode cannot contain more than two instructions")); |
a1f3c24c SS |
2431 | insn->parallel = 0; |
2432 | insn->in_use = 0; | |
2433 | return; | |
2434 | } | |
3739860c | 2435 | |
a1f3c24c SS |
2436 | /* Lets take care of the first part of the parallel insn */ |
2437 | *s++ = 0; | |
2438 | md_assemble(str); | |
2439 | insn->parallel = 1; | |
2440 | str = ++s; | |
2441 | /* .. and let the second run though here */ | |
2442 | } | |
2443 | } | |
3739860c | 2444 | |
026df7c5 NC |
2445 | if (str && insn->parallel) |
2446 | { | |
026df7c5 NC |
2447 | /* Find mnemonic (second part of parallel instruction). */ |
2448 | s = str; | |
2449 | /* Skip past instruction mnemonic. */ | |
a1f3c24c | 2450 | while (*s && *s != ' ') |
026df7c5 | 2451 | s++; |
026df7c5 NC |
2452 | if (*s) /* Null terminate for hash_find. */ |
2453 | *s++ = '\0'; /* and skip past null. */ | |
77ab336e CG |
2454 | len = strlen (insn->name); |
2455 | snprintf (insn->name + len, TIC4X_NAME_MAX - len, "_%s", str); | |
026df7c5 | 2456 | |
026df7c5 NC |
2457 | insn->operands[insn->num_operands++].mode = M_PARALLEL; |
2458 | ||
be33c5dd | 2459 | if ((i = tic4x_operands_parse |
026df7c5 NC |
2460 | (s, insn->operands, insn->num_operands)) < 0) |
2461 | { | |
2462 | insn->parallel = 0; | |
2463 | insn->in_use = 0; | |
2464 | return; | |
2465 | } | |
2466 | insn->num_operands = i; | |
2467 | parsed = 1; | |
2468 | } | |
2469 | ||
2470 | if (insn->in_use) | |
2471 | { | |
be33c5dd SS |
2472 | if ((insn->inst = (struct tic4x_inst *) |
2473 | hash_find (tic4x_op_hash, insn->name)) == NULL) | |
026df7c5 | 2474 | { |
20203fb9 | 2475 | as_bad (_("Unknown opcode `%s'."), insn->name); |
026df7c5 NC |
2476 | insn->parallel = 0; |
2477 | insn->in_use = 0; | |
2478 | return; | |
2479 | } | |
2480 | ||
026df7c5 | 2481 | inst = insn->inst; |
9c87d6c7 | 2482 | first_inst = NULL; |
026df7c5 | 2483 | do |
9c87d6c7 | 2484 | { |
be33c5dd | 2485 | ok = tic4x_operands_match (inst, insn, 1); |
9c87d6c7 SS |
2486 | if (ok < 0) |
2487 | { | |
2488 | if (!first_inst) | |
2489 | first_inst = inst; | |
2490 | ok = 0; | |
2491 | } | |
2492 | } while (!ok && !strcmp (inst->name, inst[1].name) && inst++); | |
026df7c5 NC |
2493 | |
2494 | if (ok > 0) | |
9c87d6c7 | 2495 | { |
be33c5dd SS |
2496 | tic4x_insn_check (insn); |
2497 | tic4x_insn_output (insn); | |
9c87d6c7 | 2498 | } |
026df7c5 | 2499 | else if (!ok) |
9c87d6c7 SS |
2500 | { |
2501 | if (first_inst) | |
be33c5dd | 2502 | tic4x_operands_match (first_inst, insn, 0); |
20203fb9 | 2503 | as_bad (_("Invalid operands for %s"), insn->name); |
9c87d6c7 | 2504 | } |
026df7c5 | 2505 | else |
20203fb9 | 2506 | as_bad (_("Invalid instruction %s"), insn->name); |
026df7c5 NC |
2507 | } |
2508 | ||
2509 | if (str && !parsed) | |
2510 | { | |
2511 | /* Find mnemonic. */ | |
2512 | s = str; | |
2513 | while (*s && *s != ' ') /* Skip past instruction mnemonic. */ | |
2514 | s++; | |
2515 | if (*s) /* Null terminate for hash_find. */ | |
2516 | *s++ = '\0'; /* and skip past null. */ | |
77ab336e CG |
2517 | strncpy (insn->name, str, TIC4X_NAME_MAX - 1); |
2518 | insn->name[TIC4X_NAME_MAX - 1] = '\0'; | |
026df7c5 | 2519 | |
be33c5dd | 2520 | if ((i = tic4x_operands_parse (s, insn->operands, 0)) < 0) |
026df7c5 | 2521 | { |
708587a4 | 2522 | insn->inst = NULL; /* Flag that error occurred. */ |
026df7c5 NC |
2523 | insn->parallel = 0; |
2524 | insn->in_use = 0; | |
2525 | return; | |
2526 | } | |
2527 | insn->num_operands = i; | |
2528 | insn->in_use = 1; | |
2529 | } | |
2530 | else | |
2531 | insn->in_use = 0; | |
2532 | insn->parallel = 0; | |
2533 | } | |
2534 | ||
2535 | void | |
5a49b8ac | 2536 | tic4x_cleanup (void) |
026df7c5 NC |
2537 | { |
2538 | if (insn->in_use) | |
2539 | md_assemble (NULL); | |
2540 | } | |
2541 | ||
2542 | /* Turn a string in input_line_pointer into a floating point constant | |
2543 | of type type, and store the appropriate bytes in *litP. The number | |
499ac353 | 2544 | of chars emitted is stored in *sizeP. An error message is |
026df7c5 NC |
2545 | returned, or NULL on OK. */ |
2546 | ||
6d4af3c2 | 2547 | const char * |
499ac353 | 2548 | md_atof (int type, char *litP, int *sizeP) |
026df7c5 NC |
2549 | { |
2550 | int prec; | |
2551 | int ieee; | |
2552 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
2553 | LITTLENUM_TYPE *wordP; | |
2132e3a3 | 2554 | char *t; |
026df7c5 NC |
2555 | |
2556 | switch (type) | |
2557 | { | |
499ac353 | 2558 | case 's': /* .single */ |
026df7c5 NC |
2559 | case 'S': |
2560 | ieee = 0; | |
2561 | prec = 1; | |
2562 | break; | |
2563 | ||
499ac353 | 2564 | case 'd': /* .double */ |
026df7c5 | 2565 | case 'D': |
499ac353 | 2566 | case 'f': /* .float */ |
026df7c5 NC |
2567 | case 'F': |
2568 | ieee = 0; | |
499ac353 | 2569 | prec = 2; /* 1 32-bit word */ |
026df7c5 NC |
2570 | break; |
2571 | ||
499ac353 | 2572 | case 'i': /* .ieee */ |
247b1fe6 | 2573 | case 'I': |
026df7c5 NC |
2574 | prec = 2; |
2575 | ieee = 1; | |
499ac353 | 2576 | type = 'f'; /* Rewrite type to be usable by atof_ieee(). */ |
026df7c5 NC |
2577 | break; |
2578 | ||
499ac353 | 2579 | case 'e': /* .ldouble */ |
247b1fe6 | 2580 | case 'E': |
499ac353 | 2581 | prec = 4; /* 2 32-bit words */ |
247b1fe6 | 2582 | ieee = 0; |
026df7c5 NC |
2583 | break; |
2584 | ||
2585 | default: | |
2586 | *sizeP = 0; | |
499ac353 | 2587 | return _("Unrecognized or unsupported floating point constant"); |
026df7c5 NC |
2588 | } |
2589 | ||
2590 | if (ieee) | |
2591 | t = atof_ieee (input_line_pointer, type, words); | |
2592 | else | |
be33c5dd | 2593 | t = tic4x_atof (input_line_pointer, type, words); |
026df7c5 NC |
2594 | if (t) |
2595 | input_line_pointer = t; | |
2596 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
2132e3a3 | 2597 | |
026df7c5 NC |
2598 | /* This loops outputs the LITTLENUMs in REVERSE order; in accord with |
2599 | little endian byte order. */ | |
247b1fe6 SS |
2600 | /* SES: However it is required to put the words (32-bits) out in the |
2601 | correct order, hence we write 2 and 2 littlenums in little endian | |
499ac353 NC |
2602 | order, while we keep the original order on successive words. */ |
2603 | for (wordP = words; wordP<(words+prec) ; wordP+=2) | |
026df7c5 | 2604 | { |
499ac353 | 2605 | if (wordP < (words + prec - 1)) /* Dump wordP[1] (if we have one). */ |
247b1fe6 SS |
2606 | { |
2607 | md_number_to_chars (litP, (valueT) (wordP[1]), | |
2608 | sizeof (LITTLENUM_TYPE)); | |
2609 | litP += sizeof (LITTLENUM_TYPE); | |
2610 | } | |
2611 | ||
2612 | /* Dump wordP[0] */ | |
2613 | md_number_to_chars (litP, (valueT) (wordP[0]), | |
2614 | sizeof (LITTLENUM_TYPE)); | |
026df7c5 NC |
2615 | litP += sizeof (LITTLENUM_TYPE); |
2616 | } | |
499ac353 | 2617 | return NULL; |
026df7c5 NC |
2618 | } |
2619 | ||
3739860c | 2620 | void |
5a49b8ac | 2621 | md_apply_fix (fixS *fixP, valueT *value, segT seg ATTRIBUTE_UNUSED) |
026df7c5 NC |
2622 | { |
2623 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
2624 | valueT val = *value; | |
2625 | ||
2626 | switch (fixP->fx_r_type) | |
2627 | { | |
2628 | case BFD_RELOC_HI16: | |
2629 | val >>= 16; | |
2630 | break; | |
2631 | ||
2632 | case BFD_RELOC_LO16: | |
2633 | val &= 0xffff; | |
2634 | break; | |
2635 | default: | |
2636 | break; | |
2637 | } | |
2638 | ||
2639 | switch (fixP->fx_r_type) | |
2640 | { | |
2641 | case BFD_RELOC_32: | |
2642 | buf[3] = val >> 24; | |
2643 | case BFD_RELOC_24: | |
2644 | case BFD_RELOC_24_PCREL: | |
2645 | buf[2] = val >> 16; | |
2646 | case BFD_RELOC_16: | |
2647 | case BFD_RELOC_16_PCREL: | |
2648 | case BFD_RELOC_LO16: | |
2649 | case BFD_RELOC_HI16: | |
2650 | buf[1] = val >> 8; | |
2651 | buf[0] = val; | |
2652 | break; | |
2653 | ||
2654 | case NO_RELOC: | |
2655 | default: | |
20203fb9 | 2656 | as_bad (_("Bad relocation type: 0x%02x"), fixP->fx_r_type); |
026df7c5 NC |
2657 | break; |
2658 | } | |
2659 | ||
2660 | if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) fixP->fx_done = 1; | |
2661 | } | |
2662 | ||
be33c5dd | 2663 | /* Should never be called for tic4x. */ |
3739860c | 2664 | void |
5a49b8ac AM |
2665 | md_convert_frag (bfd *headers ATTRIBUTE_UNUSED, |
2666 | segT sec ATTRIBUTE_UNUSED, | |
2667 | fragS *fragP ATTRIBUTE_UNUSED) | |
026df7c5 NC |
2668 | { |
2669 | as_fatal ("md_convert_frag"); | |
2670 | } | |
2671 | ||
be33c5dd | 2672 | /* Should never be called for tic4x. */ |
026df7c5 | 2673 | void |
5a49b8ac AM |
2674 | md_create_short_jump (char *ptr ATTRIBUTE_UNUSED, |
2675 | addressT from_addr ATTRIBUTE_UNUSED, | |
2676 | addressT to_addr ATTRIBUTE_UNUSED, | |
2677 | fragS *frag ATTRIBUTE_UNUSED, | |
2678 | symbolS *to_symbol ATTRIBUTE_UNUSED) | |
026df7c5 NC |
2679 | { |
2680 | as_fatal ("md_create_short_jmp\n"); | |
2681 | } | |
2682 | ||
be33c5dd | 2683 | /* Should never be called for tic4x. */ |
026df7c5 | 2684 | void |
5a49b8ac AM |
2685 | md_create_long_jump (char *ptr ATTRIBUTE_UNUSED, |
2686 | addressT from_addr ATTRIBUTE_UNUSED, | |
2687 | addressT to_addr ATTRIBUTE_UNUSED, | |
2688 | fragS *frag ATTRIBUTE_UNUSED, | |
2689 | symbolS *to_symbol ATTRIBUTE_UNUSED) | |
026df7c5 NC |
2690 | { |
2691 | as_fatal ("md_create_long_jump\n"); | |
2692 | } | |
2693 | ||
be33c5dd | 2694 | /* Should never be called for tic4x. */ |
026df7c5 | 2695 | int |
5a49b8ac AM |
2696 | md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED, |
2697 | segT segtype ATTRIBUTE_UNUSED) | |
026df7c5 NC |
2698 | { |
2699 | as_fatal ("md_estimate_size_before_relax\n"); | |
2700 | return 0; | |
2701 | } | |
2702 | ||
026df7c5 NC |
2703 | |
2704 | int | |
17b9d67d | 2705 | md_parse_option (int c, const char *arg) |
026df7c5 NC |
2706 | { |
2707 | switch (c) | |
2708 | { | |
9c87d6c7 | 2709 | case OPTION_CPU: /* cpu brand */ |
278ed128 | 2710 | if (TOLOWER (*arg) == 'c') |
026df7c5 | 2711 | arg++; |
be33c5dd SS |
2712 | tic4x_cpu = atoi (arg); |
2713 | if (!IS_CPU_TIC3X (tic4x_cpu) && !IS_CPU_TIC4X (tic4x_cpu)) | |
20203fb9 | 2714 | as_warn (_("Unsupported processor generation %d"), tic4x_cpu); |
026df7c5 | 2715 | break; |
9c87d6c7 SS |
2716 | |
2717 | case OPTION_REV: /* cpu revision */ | |
be33c5dd | 2718 | tic4x_revision = atoi (arg); |
9c87d6c7 SS |
2719 | break; |
2720 | ||
2721 | case 'b': | |
20203fb9 | 2722 | as_warn (_("Option -b is depreciated, please use -mbig")); |
9c87d6c7 | 2723 | case OPTION_BIG: /* big model */ |
be33c5dd | 2724 | tic4x_big_model = 1; |
9c87d6c7 SS |
2725 | break; |
2726 | ||
2727 | case 'p': | |
20203fb9 | 2728 | as_warn (_("Option -p is depreciated, please use -mmemparm")); |
9c87d6c7 | 2729 | case OPTION_MEMPARM: /* push args */ |
be33c5dd | 2730 | tic4x_reg_args = 0; |
026df7c5 | 2731 | break; |
9c87d6c7 | 2732 | |
3739860c | 2733 | case 'r': |
20203fb9 | 2734 | as_warn (_("Option -r is depreciated, please use -mregparm")); |
9c87d6c7 | 2735 | case OPTION_REGPARM: /* register args */ |
be33c5dd | 2736 | tic4x_reg_args = 1; |
026df7c5 | 2737 | break; |
9c87d6c7 SS |
2738 | |
2739 | case 's': | |
20203fb9 | 2740 | as_warn (_("Option -s is depreciated, please use -msmall")); |
9c87d6c7 | 2741 | case OPTION_SMALL: /* small model */ |
be33c5dd | 2742 | tic4x_big_model = 0; |
026df7c5 | 2743 | break; |
9c87d6c7 SS |
2744 | |
2745 | case OPTION_IDLE2: | |
be33c5dd | 2746 | tic4x_idle2 = 1; |
9c87d6c7 SS |
2747 | break; |
2748 | ||
2749 | case OPTION_LOWPOWER: | |
be33c5dd | 2750 | tic4x_lowpower = 1; |
9c87d6c7 SS |
2751 | break; |
2752 | ||
2753 | case OPTION_ENHANCED: | |
be33c5dd | 2754 | tic4x_enhanced = 1; |
9c87d6c7 SS |
2755 | break; |
2756 | ||
026df7c5 NC |
2757 | default: |
2758 | return 0; | |
2759 | } | |
2760 | ||
2761 | return 1; | |
2762 | } | |
2763 | ||
2764 | void | |
5a49b8ac | 2765 | md_show_usage (FILE *stream) |
026df7c5 | 2766 | { |
9c87d6c7 SS |
2767 | fprintf (stream, |
2768 | _("\nTIC4X options:\n" | |
2769 | " -mcpu=CPU -mCPU select architecture variant. CPU can be:\n" | |
2770 | " 30 - TMS320C30\n" | |
2771 | " 31 - TMS320C31, TMS320LC31\n" | |
2772 | " 32 - TMS320C32\n" | |
2773 | " 33 - TMS320VC33\n" | |
2774 | " 40 - TMS320C40\n" | |
2775 | " 44 - TMS320C44\n" | |
2776 | " -mrev=REV set cpu hardware revision (integer numbers).\n" | |
2777 | " Combinations of -mcpu and -mrev will enable/disable\n" | |
2778 | " the appropriate options (-midle2, -mlowpower and\n" | |
2779 | " -menhanced) according to the selected type\n" | |
2780 | " -mbig select big memory model\n" | |
2781 | " -msmall select small memory model (default)\n" | |
2782 | " -mregparm select register parameters (default)\n" | |
2783 | " -mmemparm select memory parameters\n" | |
2784 | " -midle2 enable IDLE2 support\n" | |
2785 | " -mlowpower enable LOPOWER and MAXSPEED support\n" | |
2786 | " -menhanced enable enhanced opcode support\n")); | |
026df7c5 NC |
2787 | } |
2788 | ||
2789 | /* This is called when a line is unrecognized. This is used to handle | |
2790 | definitions of TI C3x tools style local labels $n where n is a single | |
2791 | decimal digit. */ | |
3739860c | 2792 | int |
5a49b8ac | 2793 | tic4x_unrecognized_line (int c) |
026df7c5 NC |
2794 | { |
2795 | int lab; | |
2796 | char *s; | |
2797 | ||
278ed128 | 2798 | if (c != '$' || ! ISDIGIT (input_line_pointer[0])) |
026df7c5 NC |
2799 | return 0; |
2800 | ||
2801 | s = input_line_pointer; | |
2802 | ||
2803 | /* Let's allow multiple digit local labels. */ | |
2804 | lab = 0; | |
278ed128 | 2805 | while (ISDIGIT (*s)) |
026df7c5 NC |
2806 | { |
2807 | lab = lab * 10 + *s - '0'; | |
2808 | s++; | |
2809 | } | |
2810 | ||
2811 | if (dollar_label_defined (lab)) | |
2812 | { | |
20203fb9 | 2813 | as_bad (_("Label \"$%d\" redefined"), lab); |
026df7c5 NC |
2814 | return 0; |
2815 | } | |
2816 | ||
2817 | define_dollar_label (lab); | |
2818 | colon (dollar_label_name (lab, 0)); | |
2819 | input_line_pointer = s + 1; | |
2820 | ||
2821 | return 1; | |
2822 | } | |
2823 | ||
2824 | /* Handle local labels peculiar to us referred to in an expression. */ | |
2825 | symbolS * | |
5a49b8ac | 2826 | md_undefined_symbol (char *name) |
026df7c5 NC |
2827 | { |
2828 | /* Look for local labels of the form $n. */ | |
278ed128 | 2829 | if (name[0] == '$' && ISDIGIT (name[1])) |
026df7c5 NC |
2830 | { |
2831 | symbolS *symbolP; | |
2832 | char *s = name + 1; | |
2833 | int lab = 0; | |
2834 | ||
278ed128 | 2835 | while (ISDIGIT ((unsigned char) *s)) |
026df7c5 NC |
2836 | { |
2837 | lab = lab * 10 + *s - '0'; | |
2838 | s++; | |
2839 | } | |
2840 | if (dollar_label_defined (lab)) | |
2841 | { | |
2842 | name = dollar_label_name (lab, 0); | |
2843 | symbolP = symbol_find (name); | |
2844 | } | |
2845 | else | |
2846 | { | |
2847 | name = dollar_label_name (lab, 1); | |
2848 | symbolP = symbol_find_or_make (name); | |
2849 | } | |
2850 | ||
2851 | return symbolP; | |
2852 | } | |
2853 | return NULL; | |
2854 | } | |
2855 | ||
2856 | /* Parse an operand that is machine-specific. */ | |
2857 | void | |
5a49b8ac | 2858 | md_operand (expressionS *expressionP ATTRIBUTE_UNUSED) |
026df7c5 NC |
2859 | { |
2860 | } | |
2861 | ||
2862 | /* Round up a section size to the appropriate boundary---do we need this? */ | |
2863 | valueT | |
5a49b8ac | 2864 | md_section_align (segT segment ATTRIBUTE_UNUSED, valueT size) |
026df7c5 NC |
2865 | { |
2866 | return size; /* Byte (i.e., 32-bit) alignment is fine? */ | |
2867 | } | |
2868 | ||
3739860c | 2869 | static int |
5a49b8ac | 2870 | tic4x_pc_offset (unsigned int op) |
026df7c5 NC |
2871 | { |
2872 | /* Determine the PC offset for a C[34]x instruction. | |
2873 | This could be simplified using some boolean algebra | |
2874 | but at the expense of readability. */ | |
2875 | switch (op >> 24) | |
2876 | { | |
2877 | case 0x60: /* br */ | |
2878 | case 0x62: /* call (C4x) */ | |
2879 | case 0x64: /* rptb (C4x) */ | |
2880 | return 1; | |
2881 | case 0x61: /* brd */ | |
2882 | case 0x63: /* laj */ | |
2883 | case 0x65: /* rptbd (C4x) */ | |
2884 | return 3; | |
2885 | case 0x66: /* swi */ | |
2886 | case 0x67: | |
2887 | return 0; | |
2888 | default: | |
2889 | break; | |
2890 | } | |
2891 | ||
2892 | switch ((op & 0xffe00000) >> 20) | |
2893 | { | |
2894 | case 0x6a0: /* bB */ | |
2895 | case 0x720: /* callB */ | |
2896 | case 0x740: /* trapB */ | |
2897 | return 1; | |
2898 | ||
2899 | case 0x6a2: /* bBd */ | |
2900 | case 0x6a6: /* bBat */ | |
2901 | case 0x6aa: /* bBaf */ | |
2902 | case 0x722: /* lajB */ | |
2903 | case 0x748: /* latB */ | |
2904 | case 0x798: /* rptbd */ | |
2905 | return 3; | |
2906 | ||
2907 | default: | |
2908 | break; | |
2909 | } | |
2910 | ||
2911 | switch ((op & 0xfe200000) >> 20) | |
2912 | { | |
2913 | case 0x6e0: /* dbB */ | |
2914 | return 1; | |
2915 | ||
2916 | case 0x6e2: /* dbBd */ | |
2917 | return 3; | |
2918 | ||
2919 | default: | |
2920 | break; | |
2921 | } | |
2922 | ||
2923 | return 0; | |
2924 | } | |
2925 | ||
2926 | /* Exactly what point is a PC-relative offset relative TO? | |
2927 | With the C3x we have the following: | |
2928 | DBcond, Bcond disp + PC + 1 => PC | |
2929 | DBcondD, BcondD disp + PC + 3 => PC | |
2930 | */ | |
2931 | long | |
5a49b8ac | 2932 | md_pcrel_from (fixS *fixP) |
026df7c5 | 2933 | { |
2132e3a3 | 2934 | unsigned char *buf; |
026df7c5 NC |
2935 | unsigned int op; |
2936 | ||
2132e3a3 | 2937 | buf = (unsigned char *) fixP->fx_frag->fr_literal + fixP->fx_where; |
026df7c5 NC |
2938 | op = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; |
2939 | ||
2940 | return ((fixP->fx_where + fixP->fx_frag->fr_address) >> 2) + | |
be33c5dd | 2941 | tic4x_pc_offset (op); |
026df7c5 NC |
2942 | } |
2943 | ||
247b1fe6 SS |
2944 | /* Fill the alignment area with NOP's on .text, unless fill-data |
2945 | was specified. */ | |
3739860c | 2946 | int |
b9fcee79 AM |
2947 | tic4x_do_align (int alignment, |
2948 | const char *fill, | |
2949 | int len, | |
2950 | int max) | |
026df7c5 | 2951 | { |
33b7f697 | 2952 | /* Because we are talking lwords, not bytes, adjust alignment to do words */ |
247b1fe6 | 2953 | alignment += 2; |
3739860c | 2954 | |
247b1fe6 SS |
2955 | if (alignment != 0 && !need_pass_2) |
2956 | { | |
2957 | if (fill == NULL) | |
2958 | { | |
18498503 | 2959 | if (subseg_text_p (now_seg)) |
b9fcee79 AM |
2960 | { |
2961 | char nop[4]; | |
2962 | ||
2963 | md_number_to_chars (nop, TIC_NOP_OPCODE, 4); | |
2964 | frag_align_pattern (alignment, nop, sizeof (nop), max); | |
2965 | } | |
2966 | else | |
2967 | frag_align (alignment, 0, max); | |
247b1fe6 SS |
2968 | } |
2969 | else if (len <= 1) | |
2970 | frag_align (alignment, *fill, max); | |
2971 | else | |
2972 | frag_align_pattern (alignment, fill, len, max); | |
2973 | } | |
3739860c | 2974 | |
33b7f697 | 2975 | /* Return 1 to skip the default alignment function */ |
026df7c5 NC |
2976 | return 1; |
2977 | } | |
2978 | ||
2979 | /* Look for and remove parallel instruction operator ||. */ | |
3739860c | 2980 | void |
5a49b8ac | 2981 | tic4x_start_line (void) |
026df7c5 NC |
2982 | { |
2983 | char *s = input_line_pointer; | |
2984 | ||
2985 | SKIP_WHITESPACE (); | |
2986 | ||
2987 | /* If parallel instruction prefix found at start of line, skip it. */ | |
2988 | if (*input_line_pointer == '|' && input_line_pointer[1] == '|') | |
2989 | { | |
2990 | if (insn->in_use) | |
2991 | { | |
2992 | insn->parallel = 1; | |
a1f3c24c SS |
2993 | input_line_pointer ++; |
2994 | *input_line_pointer = ' '; | |
026df7c5 NC |
2995 | /* So line counters get bumped. */ |
2996 | input_line_pointer[-1] = '\n'; | |
2997 | } | |
2998 | } | |
2999 | else | |
3000 | { | |
a1f3c24c | 3001 | /* Write out the previous insn here */ |
026df7c5 NC |
3002 | if (insn->in_use) |
3003 | md_assemble (NULL); | |
3004 | input_line_pointer = s; | |
3005 | } | |
3006 | } | |
3007 | ||
3008 | arelent * | |
5a49b8ac | 3009 | tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixP) |
026df7c5 NC |
3010 | { |
3011 | arelent *reloc; | |
3012 | ||
325801bd | 3013 | reloc = XNEW (arelent); |
026df7c5 | 3014 | |
325801bd | 3015 | reloc->sym_ptr_ptr = XNEW (asymbol *); |
026df7c5 NC |
3016 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy); |
3017 | reloc->address = fixP->fx_frag->fr_address + fixP->fx_where; | |
3018 | reloc->address /= OCTETS_PER_BYTE; | |
3019 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
3020 | if (reloc->howto == (reloc_howto_type *) NULL) | |
3021 | { | |
3022 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
20203fb9 | 3023 | _("Reloc %d not supported by object file format"), |
026df7c5 NC |
3024 | (int) fixP->fx_r_type); |
3025 | return NULL; | |
3026 | } | |
3027 | ||
3028 | if (fixP->fx_r_type == BFD_RELOC_HI16) | |
3029 | reloc->addend = fixP->fx_offset; | |
3030 | else | |
3031 | reloc->addend = fixP->fx_addnumber; | |
3032 | ||
3033 | return reloc; | |
3034 | } |