Commit | Line | Data |
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276dd6ef | 1 | /* tc-dvp.c -- Assembler for the DVP |
f7306261 | 2 | Copyright (C) 1997, 1998 Free Software Foundation. |
209fb346 DE |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include <stdio.h> | |
22 | #include <ctype.h> | |
1ece1d56 | 23 | |
209fb346 | 24 | #include "as.h" |
f6428b86 | 25 | #include "subsegs.h" |
276dd6ef | 26 | /* Needed by opcode/dvp.h. */ |
f6428b86 | 27 | #include "dis-asm.h" |
276dd6ef | 28 | #include "opcode/dvp.h" |
3a6b8910 | 29 | #include "elf/mips.h" |
95bfad6d | 30 | |
1ece1d56 DE |
31 | #ifdef USE_STDARG |
32 | #include <stdarg.h> | |
33 | #else | |
34 | #include <varargs.h> | |
35 | #endif | |
36 | ||
8b901ef8 DE |
37 | /* Value of VIF `nop' instruction. */ |
38 | #define VIFNOP 0 | |
39 | ||
ba4be194 DE |
40 | #define MIN(a,b) ((a) < (b) ? (a) : (b)) |
41 | ||
1ece1d56 DE |
42 | /* Compute DMA operand index number of OP. */ |
43 | #define DMA_OPERAND_INDEX(op) ((op) - dma_operands) | |
19f12fb4 | 44 | |
91572941 DE |
45 | /* Our local label prefix. */ |
46 | #define LOCAL_LABEL_PREFIX ".L" | |
47 | /* Label prefix for end markers used in autocounts. */ | |
48 | #define END_LABEL_PREFIX ".L.end." | |
9152beba DE |
49 | /* Label to use for unique labels. */ |
50 | #define UNIQUE_LABEL_PREFIX ".L.dvptmp." | |
07b20428 DE |
51 | /* Prefix for mips version of labels defined in vu code. |
52 | Note that symbols that begin with '$' are local symbols | |
53 | on mips targets, so we can't begin it with '$'. */ | |
cb74aaa5 | 54 | #define VU_LABEL_PREFIX "_$" |
1554baf3 DE |
55 | /* Prefix for symbols at start of vu overlays, in r5900 space. */ |
56 | #define VUOVERLAY_START_PREFIX "__start_" | |
91572941 | 57 | |
1ece1d56 | 58 | static long parse_float PARAMS ((char **, const char **)); |
57d0c830 | 59 | static symbolS * create_label PARAMS ((const char *, const char *)); |
b6d331b9 | 60 | static symbolS * create_colon_label PARAMS ((int, const char *, const char *)); |
57d0c830 | 61 | static char * unique_name PARAMS ((const char *)); |
5dccb8b0 DE |
62 | static char * vuoverlay_section_name PARAMS ((symbolS *)); |
63 | static void create_vuoverlay_section PARAMS ((const char *, symbolS *, | |
1554baf3 | 64 | symbolS *, symbolS *)); |
07b20428 | 65 | static symbolS * compute_mpgloc PARAMS ((symbolS *, symbolS *, symbolS *)); |
fa3671a3 DE |
66 | static int compute_nloop PARAMS ((gif_type, int, int)); |
67 | static void check_nloop PARAMS ((gif_type, int, int, int, | |
68 | char *, unsigned int)); | |
07b20428 | 69 | static long eval_expr PARAMS ((dvp_cpu, int, int, const char *, ...)); |
1ece1d56 | 70 | static long parse_dma_addr_autocount (); |
8151801a | 71 | static void inline_dma_data PARAMS ((int, DVP_INSN *)); |
e9cb12e4 | 72 | static void setup_dma_autocount PARAMS ((const char *, DVP_INSN *, int)); |
8dddf63f | 73 | |
6856244d DE |
74 | static void insert_operand |
75 | PARAMS ((dvp_cpu, const dvp_opcode *, const dvp_operand *, int, | |
76 | DVP_INSN *, offsetT, const char **)); | |
77 | static void insert_operand_final | |
78 | PARAMS ((dvp_cpu, const dvp_operand *, int, | |
79 | DVP_INSN *, offsetT, char *, unsigned int)); | |
020ba60b | 80 | |
8b901ef8 DE |
81 | static void insert_mpg_marker PARAMS ((unsigned long)); |
82 | static void insert_unpack_marker PARAMS ((unsigned long)); | |
83 | static int insert_file PARAMS ((const char *, | |
84 | void (*) PARAMS ((unsigned long)), | |
85 | unsigned long, int)); | |
e033023f | 86 | |
a6756468 DE |
87 | static int vif_insn_type PARAMS ((char)); |
88 | static int vif_length_value PARAMS ((char, int, int, int)); | |
b4cbabb8 | 89 | static void install_vif_length PARAMS ((char *, int)); |
e033023f | 90 | |
209fb346 DE |
91 | const char comment_chars[] = ";"; |
92 | const char line_comment_chars[] = "#"; | |
93 | const char line_separator_chars[] = "!"; | |
94 | const char EXP_CHARS[] = "eE"; | |
95 | const char FLT_CHARS[] = "dD"; | |
8b901ef8 | 96 | \f |
e033023f DE |
97 | /* Current assembler state. |
98 | Instructions like mpg and direct are followed by a restricted set of | |
fe9efeb6 DE |
99 | instructions. In the case of a '*' length argument an end marker must |
100 | be provided. (e.g. mpg is followed by vu insns until a .EndMpg is | |
498fcb9c DE |
101 | seen). |
102 | ||
103 | Allowed state transitions: | |
c94a25c2 DE |
104 | ASM_INIT <--> ASM_MPG |
105 | ASM_DIRECT <--> ASM_GIF | |
e4d77412 | 106 | ASM_UNPACK <--> ASM_GIF |
c94a25c2 | 107 | ASM_VU |
e4d77412 | 108 | ASM_GIF |
c94a25c2 DE |
109 | |
110 | FIXME: Make the ASM_INIT -> ASM_VU a one way transition. | |
111 | ".vu" must be seen at the top of the file, | |
112 | and cannot be switched out of. | |
498fcb9c DE |
113 | */ |
114 | ||
e1b747c4 | 115 | typedef enum { |
e4d77412 | 116 | ASM_INIT, ASM_DIRECT, ASM_MPG, ASM_UNPACK, ASM_VU, ASM_GIF, ASM_MAX |
e1b747c4 | 117 | } asm_state; |
498fcb9c DE |
118 | |
119 | /* We need to maintain a stack of the current and previous status to handle | |
120 | such things as "direct ...; gifpacked ... ; .endgif ; .enddirect". */ | |
121 | #define MAX_STATE_DEPTH 2 | |
122 | static asm_state asm_state_stack[MAX_STATE_DEPTH]; | |
123 | /* Current state's index in the stack. */ | |
e4d77412 | 124 | static int cur_state_level; |
498fcb9c | 125 | /* Macro to fetch the current state. */ |
e4d77412 | 126 | #define CUR_ASM_STATE (asm_state_stack[cur_state_level]) |
498fcb9c DE |
127 | |
128 | /* Functions to push/pop the state stack. */ | |
129 | static void push_asm_state PARAMS ((asm_state)); | |
130 | static void pop_asm_state PARAMS ((int)); | |
e4d77412 | 131 | static void set_asm_state PARAMS ((asm_state, const char *)); |
07b20428 DE |
132 | |
133 | /* Set to non-zero if any non-vu insn seen. | |
134 | Used to control type of relocations emitted. */ | |
135 | static int non_vu_insn_seen_p = 0; | |
8b901ef8 | 136 | \f |
b6d331b9 | 137 | /* Current cpu (machine variant) type state. |
57d0c830 DE |
138 | We copy the mips16 way of recording what the current machine type is in |
139 | the code. A label is created whenever necessary and has an "other" value | |
140 | the denotes the machine type. */ | |
b6d331b9 | 141 | static dvp_cpu cur_cpu; |
57d0c830 | 142 | /* Record the current mach type. */ |
b6d331b9 | 143 | static void record_mach PARAMS ((dvp_cpu, int)); |
3b4389e2 DE |
144 | /* Force emission of mach type label at next insn. |
145 | This isn't static as TC_START_LABEL uses it. */ | |
146 | int force_mach_label PARAMS ((void)); | |
b6d331b9 DE |
147 | /* Given a dvp_cpu value, return the STO_DVP value to use. */ |
148 | static int cpu_sto PARAMS ((dvp_cpu, const char **)); | |
57d0c830 | 149 | |
91572941 | 150 | /* Nonzero if inside .DmaData. */ |
8151801a | 151 | static int dma_data_state = 0; |
91572941 | 152 | /* Label of .DmaData (internally generated for inline data). */ |
8151801a DE |
153 | static const char *dma_data_name; |
154 | ||
8b901ef8 DE |
155 | /* Variable length VIF insn support. */ |
156 | /* Label at start of insn's data. */ | |
157 | static symbolS *vif_data_start; | |
158 | /* Label at end of insn's data. */ | |
159 | static symbolS *vif_data_end; | |
160 | ||
1554baf3 DE |
161 | /* Special symbol $.mpgloc. The value is in bytes. |
162 | This value is kept absolute, for simplicity. */ | |
8b901ef8 | 163 | static symbolS *mpgloc_sym; |
8b901ef8 | 164 | |
c3b51879 | 165 | /* Handle of the current vu overlay section. */ |
1554baf3 DE |
166 | static segT vuoverlay_section; |
167 | ||
c3b51879 | 168 | /* The overlay table section is a table mapping lma's to vma's. */ |
1554baf3 | 169 | static segT vuoverlay_table_section; |
c3b51879 DE |
170 | /* String table to record section names in the overlay table. */ |
171 | static segT vuoverlay_string_section; | |
1554baf3 DE |
172 | |
173 | /* Table to map vu space labels to their overlay sections. | |
174 | Labels in vu space are first put in the ABS section to simplify | |
175 | PC relative branch calculations (s1 - s2 isn't supported if they're | |
176 | in different sections). Before the file is written out the labels | |
177 | are moved to their overlay section. */ | |
178 | typedef struct ovlysym { | |
179 | struct ovlysym *next; | |
180 | segT sec; | |
181 | symbolS *sym; | |
182 | } ovlysymS; | |
183 | static ovlysymS *ovlysym_table; | |
184 | ||
8b901ef8 DE |
185 | /* GIF insn support. */ |
186 | /* Type of insn. */ | |
187 | static int gif_insn_type; | |
188 | /* Name of label of insn's data. */ | |
8151801a | 189 | static const char *gif_data_name; |
8b901ef8 | 190 | /* Pointer to frag of insn. */ |
fa3671a3 DE |
191 | static fragS *gif_insn_frag; |
192 | /* Pointer to current gif insn in gif_insn_frag. */ | |
193 | static char *gif_insn_frag_loc; | |
fe9efeb6 | 194 | /* The length value specified in the insn, or -1 if '*'. */ |
8b901ef8 | 195 | static int gif_user_value; |
b5d20cf6 | 196 | |
83920d29 DE |
197 | /* Count of vu insns seen since the last mpg. |
198 | Set to -1 to disable automatic mpg insertion. */ | |
199 | static int vu_count; | |
200 | ||
b4cbabb8 DE |
201 | /* Non-zero if packing vif instructions in dma tags. */ |
202 | static int dma_pack_vif_p; | |
fe9efeb6 DE |
203 | |
204 | /* Non-zero if dma insns are to be included in the output. | |
205 | This is the default, but writing "if (! no_dma)" is klunky. */ | |
08847198 | 206 | static int output_dma = 1; |
b4cbabb8 DE |
207 | /* Non-zero if vif insns are to be included in the output. */ |
208 | static int output_vif = 1; | |
8b901ef8 DE |
209 | |
210 | /* Current opcode/operand for use by md_operand. */ | |
211 | static const dvp_opcode *cur_opcode; | |
212 | static const dvp_operand *cur_operand; | |
213 | ||
214 | /* Options for the `caller' argument to s_endmpg. */ | |
215 | typedef enum { ENDMPG_USER, ENDMPG_INTERNAL, ENDMPG_MIDDLE } endmpg_caller; | |
07b20428 DE |
216 | |
217 | /* Relaxation support. */ | |
218 | #define RELAX_MPG 1 | |
219 | #define RELAX_DIRECT 2 | |
220 | /* vu insns aren't relaxed, but they use machine dependent frags so we | |
221 | must handle them during relaxation */ | |
222 | #define RELAX_VU 3 | |
223 | #define RELAX_ENCODE(type, growth) (10 + (growth)) | |
224 | #define RELAX_GROWTH(state) ((state) - 10) | |
225 | /* Return non-zero if STATE represents a relaxed state. */ | |
226 | #define RELAX_DONE_P(state) ((state) >= 10) | |
209fb346 DE |
227 | \f |
228 | const char *md_shortopts = ""; | |
229 | ||
230 | struct option md_longopts[] = | |
231 | { | |
fe9efeb6 DE |
232 | #define OPTION_NO_DMA (OPTION_MD_BASE + 1) |
233 | { "no-dma", no_argument, NULL, OPTION_NO_DMA }, | |
b4cbabb8 DE |
234 | #define OPTION_NO_DMA_VIF (OPTION_NO_DMA + 1) |
235 | { "no-dma-vif", no_argument, NULL, OPTION_NO_DMA_VIF }, | |
209fb346 DE |
236 | |
237 | {NULL, no_argument, NULL, 0} | |
238 | }; | |
fe9efeb6 | 239 | size_t md_longopts_size = sizeof(md_longopts); |
209fb346 DE |
240 | |
241 | int | |
242 | md_parse_option (c, arg) | |
243 | int c; | |
244 | char *arg; | |
245 | { | |
fe9efeb6 DE |
246 | switch (c) |
247 | { | |
248 | case OPTION_NO_DMA : | |
249 | output_dma = 0; | |
250 | break; | |
b4cbabb8 | 251 | case OPTION_NO_DMA_VIF : |
fe9efeb6 | 252 | output_dma = 0; |
b4cbabb8 | 253 | output_vif = 0; |
fe9efeb6 DE |
254 | break; |
255 | default : | |
256 | return 0; | |
257 | } | |
258 | return 1; | |
209fb346 DE |
259 | } |
260 | ||
261 | void | |
262 | md_show_usage (stream) | |
263 | FILE *stream; | |
264 | { | |
fe9efeb6 DE |
265 | fprintf (stream, "\ |
266 | DVP options:\n\ | |
267 | -no-dma do not include DMA instructions in the output\n\ | |
b4cbabb8 | 268 | -no-dma-vif do not include DMA or VIF instructions in the output\n\ |
fe9efeb6 | 269 | "); |
209fb346 DE |
270 | } |
271 | ||
b5d20cf6 | 272 | static void s_dmadata PARAMS ((int)); |
3b2215c2 | 273 | static void s_enddmadata PARAMS ((int)); |
b4cbabb8 | 274 | static void s_dmapackvif PARAMS ((int)); |
b5d20cf6 | 275 | static void s_enddirect PARAMS ((int)); |
b5d20cf6 DE |
276 | static void s_endmpg PARAMS ((int)); |
277 | static void s_endunpack PARAMS ((int)); | |
498fcb9c | 278 | static void s_endgif PARAMS ((int)); |
e4d77412 | 279 | static void s_vu PARAMS ((int)); |
30596dfc | 280 | static void s_dvp_func PARAMS ((int)); |
b5d20cf6 | 281 | |
209fb346 DE |
282 | /* The target specific pseudo-ops which we support. */ |
283 | const pseudo_typeS md_pseudo_table[] = | |
284 | { | |
1ece1d56 | 285 | { "word", cons, 4 }, |
fa3671a3 | 286 | { "quad", cons, 16 }, |
1ece1d56 DE |
287 | { "dmadata", s_dmadata, 0 }, |
288 | { "dmapackvif", s_dmapackvif, 0 }, | |
289 | { "enddirect", s_enddirect, 0 }, | |
290 | { "enddmadata", s_enddmadata, 0 }, | |
8b901ef8 | 291 | { "endmpg", s_endmpg, ENDMPG_USER }, |
1ece1d56 | 292 | { "endunpack", s_endunpack, 0 }, |
498fcb9c | 293 | { "endgif", s_endgif, 0 }, |
e4d77412 | 294 | { "vu", s_vu, 0 }, |
30596dfc DE |
295 | /* We need to intercept .func/.endfunc so that we can prepend _$. |
296 | ??? Not sure this is right though as _$foo is the lma version. */ | |
297 | { "func", s_dvp_func, 0 }, | |
298 | { "endfunc", s_dvp_func, 1 }, | |
1ece1d56 | 299 | { NULL, NULL, 0 } |
209fb346 DE |
300 | }; |
301 | \f | |
302 | void | |
303 | md_begin () | |
304 | { | |
f6428b86 DE |
305 | /* Initialize the opcode tables. |
306 | This involves computing the hash chains. */ | |
276dd6ef | 307 | dvp_opcode_init_tables (0); |
b5d20cf6 | 308 | |
3b4389e2 DE |
309 | /* Force a mach type label for the first insn. */ |
310 | force_mach_label (); | |
57d0c830 DE |
311 | |
312 | /* Initialize the parsing state. */ | |
e4d77412 | 313 | set_asm_state (ASM_INIT, NULL); |
57d0c830 | 314 | |
7f28a81d DE |
315 | /* Pack vif insns in dma tags by default. */ |
316 | dma_pack_vif_p = 1; | |
83920d29 DE |
317 | |
318 | /* Disable automatic mpg insertion. */ | |
319 | vu_count = -1; | |
8b901ef8 | 320 | |
1554baf3 | 321 | /* Initialize $.mpgloc. */ |
8b901ef8 | 322 | mpgloc_sym = expr_build_uconstant (0); |
cb74aaa5 | 323 | |
1554baf3 DE |
324 | /* Create the vu overlay table section. */ |
325 | { | |
326 | /* Must preserve the current seg/subseg. It is the initial one. */ | |
327 | segT orig_seg = now_seg; | |
328 | subsegT orig_subseg = now_subseg; | |
c3b51879 DE |
329 | |
330 | vuoverlay_table_section = subseg_new (SHNAME_DVP_OVERLAY_TABLE, 0); | |
7f7d7bc0 | 331 | record_alignment (now_seg, 2); |
c3b51879 DE |
332 | vuoverlay_string_section = subseg_new (SHNAME_DVP_OVERLAY_STRTAB, 0); |
333 | /* Ensure first byte in executable is zero. So what if we waste | |
334 | a few bytes. */ | |
335 | FRAG_APPEND_1_CHAR (0); | |
336 | ||
1554baf3 DE |
337 | subseg_set (orig_seg, orig_subseg); |
338 | } | |
339 | ||
cb74aaa5 DE |
340 | /* Set the type of the output file to r5900. */ |
341 | bfd_set_arch_mach (stdoutput, bfd_arch_mips, 5900); | |
209fb346 | 342 | } |
f7306261 | 343 | \f |
f6428b86 DE |
344 | /* We need to keep a list of fixups. We can't simply generate them as |
345 | we go, because that would require us to first create the frag, and | |
346 | that would screw up references to ``.''. */ | |
347 | ||
276dd6ef | 348 | struct dvp_fixup |
f6428b86 | 349 | { |
07b20428 DE |
350 | /* the cpu this fixup is associated with */ |
351 | dvp_cpu cpu; | |
276dd6ef | 352 | /* index into `dvp_operands' */ |
f6428b86 | 353 | int opindex; |
e033023f DE |
354 | /* byte offset from beginning of instruction */ |
355 | int offset; | |
8b901ef8 DE |
356 | /* user specified value [when there is one] */ |
357 | int user_value; | |
358 | /* wl,cl values, only used with unpack insn */ | |
359 | short wl,cl; | |
360 | /* the expression */ | |
f6428b86 DE |
361 | expressionS exp; |
362 | }; | |
363 | ||
364 | #define MAX_FIXUPS 5 | |
365 | ||
f7306261 | 366 | static int fixup_count; |
276dd6ef | 367 | static struct dvp_fixup fixups[MAX_FIXUPS]; |
f7306261 | 368 | |
95bfad6d DE |
369 | /* Given a cpu type and operand number, return a temporary reloc type |
370 | for use in generating the fixup that encodes the cpu type and operand. */ | |
3a6b8910 | 371 | static int encode_fixup_reloc_type PARAMS ((dvp_cpu, int)); |
95bfad6d | 372 | /* Given an encoded fixup reloc type, decode it into cpu and operand. */ |
3a6b8910 | 373 | static void decode_fixup_reloc_type PARAMS ((int, dvp_cpu *, |
276dd6ef | 374 | const dvp_operand **)); |
95bfad6d | 375 | |
b5d20cf6 | 376 | static void assemble_dma PARAMS ((char *)); |
b4cbabb8 DE |
377 | static void assemble_gif PARAMS ((char *)); |
378 | static void assemble_vif PARAMS ((char *)); | |
b5d20cf6 | 379 | static void assemble_vu PARAMS ((char *)); |
3a6b8910 DE |
380 | static const dvp_opcode * assemble_vu_insn PARAMS ((dvp_cpu, |
381 | const dvp_opcode *, | |
382 | const dvp_operand *, | |
383 | char **, char *)); | |
384 | static const dvp_opcode * assemble_one_insn PARAMS ((dvp_cpu, | |
385 | const dvp_opcode *, | |
386 | const dvp_operand *, | |
07b20428 | 387 | int, int, |
3a6b8910 DE |
388 | char **, DVP_INSN *)); |
389 | ||
390 | /* Main entry point for assembling an instruction. */ | |
f6428b86 | 391 | |
209fb346 DE |
392 | void |
393 | md_assemble (str) | |
394 | char *str; | |
b5d20cf6 | 395 | { |
f7306261 DE |
396 | /* Skip leading white space. */ |
397 | while (isspace (*str)) | |
398 | str++; | |
399 | ||
8151801a | 400 | /* After a gif tag, no insns can appear until a .endgif is seen. */ |
498fcb9c | 401 | if (CUR_ASM_STATE == ASM_GIF) |
8151801a DE |
402 | { |
403 | as_bad ("missing .endgif"); | |
498fcb9c | 404 | pop_asm_state (1); |
e4d77412 | 405 | /* We still parse the instruction. */ |
498fcb9c | 406 | } |
8151801a | 407 | |
498fcb9c | 408 | if (CUR_ASM_STATE == ASM_INIT) |
b5d20cf6 DE |
409 | { |
410 | if (strncasecmp (str, "dma", 3) == 0) | |
411 | assemble_dma (str); | |
1ece1d56 | 412 | else if (strncasecmp (str, "gif", 3) == 0) |
19f12fb4 | 413 | assemble_gif (str); |
b5d20cf6 | 414 | else |
b4cbabb8 | 415 | assemble_vif (str); |
07b20428 | 416 | non_vu_insn_seen_p = 1; |
b5d20cf6 | 417 | } |
e4d77412 FCE |
418 | else if (CUR_ASM_STATE == ASM_DIRECT |
419 | || CUR_ASM_STATE == ASM_UNPACK) | |
07b20428 DE |
420 | { |
421 | assemble_gif (str); | |
422 | non_vu_insn_seen_p = 1; | |
423 | } | |
498fcb9c DE |
424 | else if (CUR_ASM_STATE == ASM_VU |
425 | || CUR_ASM_STATE == ASM_MPG) | |
b5d20cf6 | 426 | assemble_vu (str); |
e033023f | 427 | else |
8b901ef8 | 428 | as_fatal ("internal error: unknown parse state"); |
b5d20cf6 DE |
429 | } |
430 | ||
f7306261 | 431 | /* Subroutine of md_assemble to assemble DMA instructions. */ |
b5d20cf6 DE |
432 | |
433 | static void | |
434 | assemble_dma (str) | |
435 | char *str; | |
436 | { | |
7f28a81d | 437 | DVP_INSN insn_buf[2]; |
1ece1d56 DE |
438 | /* Insn's length, in 32 bit words. */ |
439 | int len; | |
440 | /* Pointer to allocated frag. */ | |
441 | char *f; | |
442 | int i; | |
443 | const dvp_opcode *opcode; | |
444 | ||
e9cb12e4 DE |
445 | if (output_dma) |
446 | { | |
447 | /* Do an implicit alignment to a 16 byte boundary. | |
448 | Do it now so that inline dma data labels are at the right place. */ | |
8b901ef8 DE |
449 | /* ??? One can certainly argue all this implicit alignment is |
450 | questionable. The thing is assembler programming is all that will | |
451 | mostly likely ever be done and not doing so forces an extra [and | |
452 | arguably unnecessary] burden on the programmer. */ | |
e9cb12e4 DE |
453 | frag_align (4, 0, 0); |
454 | record_alignment (now_seg, 4); | |
455 | } | |
456 | ||
457 | /* This is the DMA tag. */ | |
1ece1d56 DE |
458 | insn_buf[0] = 0; |
459 | insn_buf[1] = 0; | |
1ece1d56 DE |
460 | |
461 | opcode = assemble_one_insn (DVP_DMA, | |
462 | dma_opcode_lookup_asm (str), dma_operands, | |
07b20428 | 463 | 0, 0, &str, insn_buf); |
1ece1d56 DE |
464 | if (opcode == NULL) |
465 | return; | |
466 | if (!output_dma) | |
467 | return; | |
468 | ||
b6d331b9 | 469 | record_mach (DVP_DMA, 0); |
57d0c830 | 470 | |
7f28a81d | 471 | f = frag_more (8); |
1ece1d56 DE |
472 | |
473 | /* Write out the DMA instruction. */ | |
7f28a81d | 474 | for (i = 0; i < 2; ++i) |
1ece1d56 | 475 | md_number_to_chars (f + i * 4, insn_buf[i], 4); |
f7306261 | 476 | |
1ece1d56 DE |
477 | /* Create any fixups. */ |
478 | /* FIXME: It might eventually be possible to combine all the various | |
479 | copies of this bit of code. */ | |
480 | for (i = 0; i < fixup_count; ++i) | |
3b2215c2 | 481 | { |
1ece1d56 DE |
482 | int op_type, reloc_type, offset; |
483 | const dvp_operand *operand; | |
3b2215c2 | 484 | |
1ece1d56 DE |
485 | /* Create a fixup for this operand. |
486 | At this point we do not use a bfd_reloc_code_real_type for | |
487 | operands residing in the insn, but instead just use the | |
488 | operand index. This lets us easily handle fixups for any | |
489 | operand type, although that is admittedly not a very exciting | |
490 | feature. We pick a BFD reloc type in md_apply_fix. */ | |
491 | ||
492 | op_type = fixups[i].opindex; | |
493 | offset = fixups[i].offset; | |
494 | reloc_type = encode_fixup_reloc_type (DVP_DMA, op_type); | |
495 | operand = &dma_operands[op_type]; | |
496 | fix_new_exp (frag_now, f + offset - frag_now->fr_literal, 4, | |
497 | &fixups[i].exp, | |
498 | (operand->flags & DVP_OPERAND_RELATIVE_BRANCH) != 0, | |
499 | (bfd_reloc_code_real_type) reloc_type); | |
3b2215c2 | 500 | } |
7f28a81d DE |
501 | |
502 | /* The upper two words are vif insns. */ | |
503 | record_mach (DVP_VIF, 0); | |
504 | ||
505 | /* If not doing dma/vif packing, fill out the insn with vif nops. | |
506 | ??? We take advantage of the fact that the default fill value of zero | |
507 | is the vifnop insn. This occurs for example when handling mpg | |
508 | alignment. It also occurs when one dma tag immediately follows the | |
509 | previous one. */ | |
510 | if (! dma_pack_vif_p) | |
511 | { | |
512 | f = frag_more (8); | |
7f28a81d DE |
513 | md_number_to_chars (f + 0, VIFNOP, 4); |
514 | md_number_to_chars (f + 4, VIFNOP, 4); | |
515 | } | |
b5d20cf6 DE |
516 | } |
517 | ||
b4cbabb8 | 518 | /* Subroutine of md_assemble to assemble VIF instructions. */ |
b5d20cf6 DE |
519 | |
520 | static void | |
b4cbabb8 | 521 | assemble_vif (str) |
b5d20cf6 DE |
522 | char *str; |
523 | { | |
95bfad6d DE |
524 | /* Space for the instruction. |
525 | The variable length insns can require much more space than this. | |
526 | It is allocated later, when we know we have such an insn. */ | |
276dd6ef | 527 | DVP_INSN insn_buf[5]; |
95bfad6d DE |
528 | /* Insn's length, in 32 bit words. */ |
529 | int len; | |
95bfad6d DE |
530 | /* Pointer to allocated frag. */ |
531 | char *f; | |
8b901ef8 | 532 | int i,wl,cl; |
3a6b8910 | 533 | const dvp_opcode *opcode; |
8b901ef8 DE |
534 | fragS * insn_frag; |
535 | /* Name of file to read data from. */ | |
536 | const char *file; | |
537 | /* Length in 32 bit words. */ | |
538 | int data_len; | |
b25ce8e1 DE |
539 | /* Macro expansion, if there is one. */ |
540 | char * macstr; | |
541 | ||
542 | /* First check for macros. */ | |
543 | macstr = dvp_expand_macro (vif_macros, vif_macro_count, str); | |
544 | if (macstr) | |
545 | { | |
546 | /* The macro may expand into several insns (delimited with '\n'), | |
547 | so loop. */ | |
548 | char * next = macstr; | |
549 | do | |
550 | { | |
551 | char *p = strchr (next, '\n'); | |
552 | if (p) | |
553 | *p = 0; | |
554 | assemble_vif (next); | |
555 | next = p ? p + 1 : 0; | |
556 | } | |
557 | while (next); | |
558 | free (macstr); | |
559 | return; | |
560 | } | |
95bfad6d | 561 | |
b4cbabb8 DE |
562 | opcode = assemble_one_insn (DVP_VIF, |
563 | vif_opcode_lookup_asm (str), vif_operands, | |
07b20428 | 564 | 0, 0, &str, insn_buf); |
3a6b8910 | 565 | if (opcode == NULL) |
95bfad6d DE |
566 | return; |
567 | ||
b4cbabb8 | 568 | if (opcode->flags & VIF_OPCODE_LENVAR) |
e033023f | 569 | len = 1; /* actual data follows later */ |
b4cbabb8 | 570 | else if (opcode->flags & VIF_OPCODE_LEN2) |
3a6b8910 | 571 | len = 2; |
b4cbabb8 | 572 | else if (opcode->flags & VIF_OPCODE_LEN5) |
3a6b8910 | 573 | len = 5; |
95bfad6d | 574 | else |
3a6b8910 DE |
575 | len = 1; |
576 | ||
fe9efeb6 | 577 | /* We still have to switch modes (if mpg for example) so we can't exit |
b4cbabb8 | 578 | early if -no-vif. */ |
8b901ef8 | 579 | |
b4cbabb8 | 580 | if (output_vif) |
95bfad6d | 581 | { |
83920d29 | 582 | /* Record the mach before doing the alignment so that we properly |
8b901ef8 DE |
583 | disassemble any inserted vifnop's. For mpg and direct insns |
584 | force the recording of the mach type for the next insn. The data | |
585 | will switch the mach type and we want to ensure it's switched | |
586 | back. */ | |
83920d29 | 587 | |
8b901ef8 | 588 | if (opcode->flags & (VIF_OPCODE_MPG | VIF_OPCODE_DIRECT)) |
b6d331b9 DE |
589 | record_mach (DVP_VIF, 1); |
590 | else | |
591 | record_mach (DVP_VIF, 0); | |
57d0c830 | 592 | |
8b901ef8 DE |
593 | /* For variable length instructions record a fixup that is the symbol |
594 | marking the end of the data. eval_expr will queue the fixup | |
595 | which will then be emitted later. */ | |
596 | if (opcode->flags & VIF_OPCODE_LENVAR) | |
597 | { | |
598 | char *name; | |
599 | ||
600 | asprintf (&name, "%s%s", LOCAL_LABEL_PREFIX, | |
601 | unique_name ("varlen")); | |
602 | vif_data_end = symbol_new (name, now_seg, 0, 0); | |
603 | symbol_table_insert (vif_data_end); | |
07b20428 | 604 | fixups[fixup_count].cpu = DVP_VIF; |
8b901ef8 DE |
605 | fixups[fixup_count].exp.X_op = O_symbol; |
606 | fixups[fixup_count].exp.X_add_symbol = vif_data_end; | |
607 | fixups[fixup_count].exp.X_add_number = 0; | |
608 | fixups[fixup_count].opindex = vif_operand_datalen_special; | |
609 | fixups[fixup_count].offset = 0; | |
610 | ||
611 | /* See what the user specified. */ | |
612 | vif_get_var_data (&file, &data_len); | |
613 | if (file) | |
614 | data_len = -1; | |
615 | fixups[fixup_count].user_value = data_len; | |
616 | /* Get the wl,cl values. Only useful for the unpack insn but | |
617 | it doesn't hurt to always record them. */ | |
618 | vif_get_wl_cl (&wl, &cl); | |
619 | fixups[fixup_count].wl = wl; | |
620 | fixups[fixup_count].cl = cl; | |
621 | ++fixup_count; | |
622 | } | |
623 | ||
624 | /* Obtain space in which to store the instruction. */ | |
625 | ||
83920d29 DE |
626 | if (opcode->flags & VIF_OPCODE_MPG) |
627 | { | |
8b901ef8 DE |
628 | /* The data must be aligned on a 64 bit boundary (so the mpg insn |
629 | comes just before that 64 bit boundary). | |
630 | Do this by putting the mpg insn in a relaxable fragment | |
631 | with a symbol that marks the beginning of the aligned data. */ | |
632 | ||
050ac694 | 633 | /* Ensure relaxable fragments are in their own fragment. |
79cb0c8a | 634 | Otherwise md_apply_fix3 mishandles fixups to insns earlier |
a9589a2c | 635 | in the fragment (because we set fr_opcode for the `mpg' insn |
79cb0c8a | 636 | because it can move in the fragment). */ |
050ac694 DE |
637 | frag_wane (frag_now); |
638 | frag_new (0); | |
639 | ||
07b20428 DE |
640 | /* One could combine the previous two lines with the following. |
641 | They're not for clarity: keep separate the actions being | |
642 | performed. */ | |
643 | ||
644 | /* This dance with frag_grow is so we can record frag_now in | |
645 | insn_frag. frag_var always changes frag_now. We must allocate | |
646 | the maximal amount of space we need so there's room to move | |
647 | the insn in the frag during relaxation. */ | |
8b901ef8 DE |
648 | frag_grow (8); |
649 | /* Allocate space for the fixed part. */ | |
650 | f = frag_more (4); | |
651 | insn_frag = frag_now; | |
652 | ||
653 | frag_var (rs_machine_dependent, | |
654 | 4, /* max chars */ | |
07b20428 DE |
655 | 0, /* variable part is empty at present */ |
656 | RELAX_MPG, /* subtype */ | |
8b901ef8 DE |
657 | NULL, /* no symbol */ |
658 | 0, /* offset */ | |
659 | f); /* opcode */ | |
660 | ||
83920d29 DE |
661 | frag_align (3, 0, 0); |
662 | record_alignment (now_seg, 3); | |
8b901ef8 DE |
663 | |
664 | /* Put a symbol at the start of data. The relaxation code uses | |
665 | this to figure out how many bytes to insert. $.mpgloc | |
1554baf3 | 666 | calculations use it. The disassembler uses it. The overlay |
c371a664 DE |
667 | tracking table uses it. |
668 | Update $.mpgloc. | |
669 | Create an overlay section. */ | |
8b901ef8 DE |
670 | { |
671 | int mpgloc = vif_get_mpgloc (); | |
c371a664 DE |
672 | const char * section_name; |
673 | ||
5dccb8b0 DE |
674 | /* Update $.mpgloc if explicitly set. |
675 | Otherwise just use the current value. */ | |
c371a664 DE |
676 | if (mpgloc != -1) |
677 | { | |
678 | /* The value is recorded in bytes, mpgloc is in dwords. */ | |
679 | mpgloc_sym = expr_build_uconstant (mpgloc * 8); | |
680 | } | |
c371a664 | 681 | |
5dccb8b0 | 682 | section_name = vuoverlay_section_name (mpgloc_sym); |
1554baf3 DE |
683 | vif_data_start = create_colon_label (STO_DVP_VU, |
684 | VUOVERLAY_START_PREFIX, | |
685 | section_name); | |
686 | insn_frag->fr_symbol = vif_data_start; | |
687 | ||
5dccb8b0 | 688 | create_vuoverlay_section (section_name, mpgloc_sym, |
c371a664 | 689 | vif_data_start, vif_data_end); |
8b901ef8 | 690 | } |
83920d29 DE |
691 | } |
692 | else if (opcode->flags & VIF_OPCODE_DIRECT) | |
693 | { | |
8b901ef8 DE |
694 | /* The data must be aligned on a 128 bit boundary (so the direct insn |
695 | comes just before that 128 bit boundary). | |
696 | Do this by putting the direct insn in a relaxable fragment. | |
697 | with a symbol that marks the beginning of the aligned data. */ | |
698 | ||
050ac694 | 699 | /* Ensure relaxable fragments are in their own fragment. |
79cb0c8a DE |
700 | Otherwise md_apply_fix3 mishandles fixups to insns earlier |
701 | in the fragment (because we set fr_opcode for the `direct' insn | |
702 | because it can move in the fragment). */ | |
050ac694 DE |
703 | frag_wane (frag_now); |
704 | frag_new (0); | |
705 | ||
07b20428 DE |
706 | /* One could combine the previous two lines with the following. |
707 | They're not for clarity: keep separate the actions being | |
708 | performed. */ | |
709 | ||
710 | /* This dance with frag_grow is so we can record frag_now in | |
711 | insn_frag. frag_var always changes frag_now. We must allocate | |
712 | the maximal amount of space we need so there's room to move | |
713 | the insn in the frag during relaxation. */ | |
8b901ef8 DE |
714 | frag_grow (16); |
715 | /* Allocate space for the fixed part. */ | |
716 | f = frag_more (4); | |
717 | insn_frag = frag_now; | |
718 | ||
719 | frag_var (rs_machine_dependent, | |
720 | 12, /* max chars */ | |
07b20428 DE |
721 | 0, /* variable part is empty at present */ |
722 | RELAX_DIRECT, /* subtype */ | |
8b901ef8 DE |
723 | NULL, /* no symbol */ |
724 | 0, /* offset */ | |
725 | f); /* opcode */ | |
726 | ||
83920d29 DE |
727 | frag_align (4, 0, 0); |
728 | record_alignment (now_seg, 4); | |
83920d29 | 729 | |
8b901ef8 DE |
730 | /* Put a symbol at the start of data. The relaxation code uses |
731 | this to figure out how many bytes to insert. */ | |
732 | vif_data_start = create_colon_label (0, LOCAL_LABEL_PREFIX, | |
733 | unique_name ("direct")); | |
734 | insn_frag->fr_symbol = vif_data_start; | |
735 | } | |
736 | else if (opcode->flags & VIF_OPCODE_UNPACK) | |
737 | { | |
738 | f = frag_more (len * 4); | |
739 | insn_frag = frag_now; | |
740 | /* Put a symbol at the start of data. $.unpackloc calculations | |
741 | use it. */ | |
40f3c6f8 DE |
742 | /* ??? $.unpackloc is gone. Is this also used for data length |
743 | verification? */ | |
8b901ef8 DE |
744 | vif_data_start = create_colon_label (STO_DVP_VIF, LOCAL_LABEL_PREFIX, |
745 | unique_name ("unpack")); | |
8b901ef8 DE |
746 | } |
747 | else | |
748 | { | |
749 | /* Reminder: it is important to fetch enough space in one call to | |
750 | `frag_more'. We use (f - frag_now->fr_literal) to compute where | |
751 | we are and we don't want frag_now to change between calls. */ | |
752 | f = frag_more (len * 4); | |
753 | insn_frag = frag_now; | |
754 | } | |
fe9efeb6 DE |
755 | |
756 | /* Write out the instruction. */ | |
757 | for (i = 0; i < len; ++i) | |
758 | md_number_to_chars (f + i * 4, insn_buf[i], 4); | |
759 | ||
760 | /* Create any fixups. */ | |
761 | /* FIXME: It might eventually be possible to combine all the various | |
762 | copies of this bit of code. */ | |
763 | for (i = 0; i < fixup_count; ++i) | |
764 | { | |
765 | int op_type, reloc_type, offset; | |
766 | const dvp_operand *operand; | |
8b901ef8 | 767 | fixS *fixP; |
f7306261 | 768 | |
fe9efeb6 DE |
769 | /* Create a fixup for this operand. |
770 | At this point we do not use a bfd_reloc_code_real_type for | |
771 | operands residing in the insn, but instead just use the | |
772 | operand index. This lets us easily handle fixups for any | |
773 | operand type, although that is admittedly not a very exciting | |
774 | feature. We pick a BFD reloc type in md_apply_fix. */ | |
775 | ||
776 | op_type = fixups[i].opindex; | |
777 | offset = fixups[i].offset; | |
b4cbabb8 DE |
778 | reloc_type = encode_fixup_reloc_type (DVP_VIF, op_type); |
779 | operand = &vif_operands[op_type]; | |
8b901ef8 DE |
780 | fixP = fix_new_exp (insn_frag, f + offset - insn_frag->fr_literal, 4, |
781 | &fixups[i].exp, | |
782 | (operand->flags & DVP_OPERAND_RELATIVE_BRANCH) != 0, | |
783 | (bfd_reloc_code_real_type) reloc_type); | |
784 | fixP->tc_fix_data.user_value = fixups[i].user_value; | |
785 | fixP->tc_fix_data.wl = fixups[i].wl; | |
786 | fixP->tc_fix_data.cl = fixups[i].cl; | |
787 | ||
788 | /* Set fx_tcbit so other parts of the code know this fixup is for | |
789 | a vif insn. */ | |
790 | fixP->fx_tcbit = 1; | |
fe9efeb6 | 791 | } |
95bfad6d | 792 | } |
e033023f | 793 | |
e1b747c4 DE |
794 | /* Handle variable length insns. */ |
795 | ||
b4cbabb8 | 796 | if (opcode->flags & VIF_OPCODE_LENVAR) |
e033023f | 797 | { |
8b901ef8 | 798 | /* See what the user specified. */ |
b4cbabb8 | 799 | vif_get_var_data (&file, &data_len); |
ba4be194 | 800 | |
e033023f DE |
801 | if (file) |
802 | { | |
1fb06680 DE |
803 | int byte_len; |
804 | ||
ba4be194 DE |
805 | /* The handling for each of mpg,direct,unpack is basically the same: |
806 | - emit a label to set the mach type for the data we're inserting | |
807 | - switch to the new assembler state | |
808 | - insert the file | |
809 | - call the `end' handler */ | |
810 | ||
1fb06680 | 811 | if (opcode->flags & VIF_OPCODE_MPG) |
ba4be194 DE |
812 | { |
813 | record_mach (DVP_VUUP, 1); | |
e4d77412 | 814 | set_asm_state (ASM_MPG, "mpg"); |
8b901ef8 DE |
815 | byte_len = insert_file (file, insert_mpg_marker, 0, 256 * 8); |
816 | s_endmpg (ENDMPG_INTERNAL); | |
ba4be194 | 817 | } |
1fb06680 | 818 | else if (opcode->flags & VIF_OPCODE_DIRECT) |
ba4be194 DE |
819 | { |
820 | record_mach (DVP_GIF, 1); | |
e4d77412 | 821 | set_asm_state (ASM_DIRECT, "direct"); |
8b901ef8 | 822 | byte_len = insert_file (file, NULL, 0, 0); |
ba4be194 DE |
823 | s_enddirect (1); |
824 | } | |
1fb06680 | 825 | else if (opcode->flags & VIF_OPCODE_UNPACK) |
1fb06680 | 826 | { |
8b901ef8 | 827 | int max_len = 0; /*unpack_max_byte_len (insn_buf[0]);*/ |
e4d77412 | 828 | set_asm_state (ASM_UNPACK, "unpack"); |
8b901ef8 DE |
829 | byte_len = insert_file (file, NULL /*insert_unpack_marker*/, |
830 | insn_buf[0], max_len); | |
ba4be194 | 831 | s_endunpack (1); |
1fb06680 | 832 | } |
ba4be194 | 833 | else |
8b901ef8 | 834 | as_fatal ("internal error: unknown cpu type for variable length vif insn"); |
e033023f | 835 | } |
8b901ef8 | 836 | else /* file == NULL */ |
e033023f DE |
837 | { |
838 | /* data_len == -1 means the value must be computed from | |
839 | the data. */ | |
a9589a2c | 840 | if (data_len <= -2) |
e033023f | 841 | as_bad ("invalid data length"); |
ba4be194 | 842 | |
8b901ef8 DE |
843 | if (output_vif && data_len != -1) |
844 | install_vif_length (f, data_len); | |
845 | ||
b4cbabb8 | 846 | if (opcode->flags & VIF_OPCODE_MPG) |
83920d29 | 847 | { |
e4d77412 | 848 | set_asm_state (ASM_MPG, "mpg"); |
83920d29 DE |
849 | /* Enable automatic mpg insertion every 256 insns. */ |
850 | vu_count = 0; | |
851 | } | |
b4cbabb8 | 852 | else if (opcode->flags & VIF_OPCODE_DIRECT) |
e4d77412 | 853 | set_asm_state (ASM_DIRECT, "direct"); |
b4cbabb8 | 854 | else if (opcode->flags & VIF_OPCODE_UNPACK) |
e4d77412 | 855 | set_asm_state (ASM_UNPACK, "unpack"); |
e033023f DE |
856 | } |
857 | } | |
b5d20cf6 DE |
858 | } |
859 | ||
e4d77412 FCE |
860 | /* Subroutine of md_assemble to assemble GIF instructions. |
861 | We assume CUR_ASM_STATE is one of ASM_{INIT,DIRECT,UNPACK}. */ | |
b5d20cf6 DE |
862 | |
863 | static void | |
b4cbabb8 | 864 | assemble_gif (str) |
b5d20cf6 DE |
865 | char *str; |
866 | { | |
276dd6ef | 867 | DVP_INSN insn_buf[4]; |
3a6b8910 | 868 | const dvp_opcode *opcode; |
8151801a DE |
869 | char *f; |
870 | int i; | |
871 | ||
872 | insn_buf[0] = insn_buf[1] = insn_buf[2] = insn_buf[3] = 0; | |
f7306261 | 873 | |
b4cbabb8 DE |
874 | opcode = assemble_one_insn (DVP_GIF, |
875 | gif_opcode_lookup_asm (str), gif_operands, | |
07b20428 | 876 | 0, 0, &str, insn_buf); |
3a6b8910 | 877 | if (opcode == NULL) |
95bfad6d | 878 | return; |
8151801a DE |
879 | |
880 | /* Do an implicit alignment to a 16 byte boundary. */ | |
881 | frag_align (4, 0, 0); | |
882 | record_alignment (now_seg, 4); | |
883 | ||
9152beba DE |
884 | /* Insert a label so we can compute the number of quadwords when the |
885 | .endgif is seen. This is put before the mach type label because gif | |
886 | insns are followed by data and we don't want the disassembler to try | |
887 | to disassemble them as mips insns (since it uses the st_other field) | |
888 | of the closest label to choose the mach type and since we don't have | |
889 | a special st_other value for "data". */ | |
8b901ef8 DE |
890 | gif_data_name = S_GET_NAME (create_colon_label (0, LOCAL_LABEL_PREFIX, |
891 | unique_name ("gifdata"))); | |
9152beba | 892 | |
b6d331b9 | 893 | record_mach (DVP_GIF, 1); |
57d0c830 | 894 | |
fa3671a3 DE |
895 | gif_insn_frag_loc = f = frag_more (16); |
896 | gif_insn_frag = frag_now; | |
8151801a DE |
897 | for (i = 0; i < 4; ++i) |
898 | md_number_to_chars (f + i * 4, insn_buf[i], 4); | |
899 | ||
8151801a DE |
900 | /* Record the type of the gif tag so we know how to compute nloop |
901 | in s_endgif. */ | |
902 | if (strcmp (opcode->mnemonic, "gifpacked") == 0) | |
903 | gif_insn_type = GIF_PACKED; | |
904 | else if (strcmp (opcode->mnemonic, "gifreglist") == 0) | |
905 | gif_insn_type = GIF_REGLIST; | |
906 | else if (strcmp (opcode->mnemonic, "gifimage") == 0) | |
907 | gif_insn_type = GIF_IMAGE; | |
908 | else | |
909 | abort (); | |
498fcb9c | 910 | push_asm_state (ASM_GIF); |
b5d20cf6 DE |
911 | } |
912 | ||
913 | /* Subroutine of md_assemble to assemble VU instructions. */ | |
914 | ||
915 | static void | |
916 | assemble_vu (str) | |
917 | char *str; | |
209fb346 | 918 | { |
07b20428 | 919 | int i; |
57d0c830 DE |
920 | char *f; |
921 | const dvp_opcode *opcode; | |
07b20428 DE |
922 | /* The lower instruction has the lower address so insns[0] = lower insn, |
923 | insns[1] = upper insn. */ | |
924 | DVP_INSN insns[2]; | |
925 | fragS * insn_frag; | |
57d0c830 | 926 | |
83920d29 DE |
927 | /* Handle automatic mpg insertion if enabled. */ |
928 | if (CUR_ASM_STATE == ASM_MPG | |
929 | && vu_count == 256) | |
8b901ef8 | 930 | insert_mpg_marker (0); |
83920d29 DE |
931 | |
932 | /* Do an implicit alignment to a 8 byte boundary. */ | |
933 | frag_align (3, 0, 0); | |
934 | record_alignment (now_seg, 3); | |
935 | ||
b6d331b9 | 936 | record_mach (DVP_VUUP, 0); |
57d0c830 | 937 | |
61e09fac | 938 | #ifdef VERTICAL_BAR_SEPARATOR |
f6428b86 DE |
939 | char *p = strchr (str, '|'); |
940 | ||
941 | if (p == NULL) | |
942 | { | |
8b9286ec | 943 | as_bad ("lower instruction missing"); |
f6428b86 DE |
944 | return; |
945 | } | |
946 | ||
947 | *p = 0; | |
07b20428 DE |
948 | opcode = assemble_one_insn (DVP_VUUP, |
949 | vu_upper_opcode_lookup_asm (str), vu_operands, | |
950 | 0, 4, &str, &insns[1]); | |
f6428b86 | 951 | *p = '|'; |
3a6b8910 | 952 | str = p + 1; |
61e09fac | 953 | #else |
07b20428 | 954 | opcode = assemble_one_insn (DVP_VUUP, |
3a6b8910 | 955 | vu_upper_opcode_lookup_asm (str), vu_operands, |
07b20428 | 956 | 0, 4, &str, &insns[1]); |
61e09fac | 957 | #endif |
19f12fb4 DE |
958 | |
959 | /* Don't assemble next one if we couldn't assemble the first. */ | |
960 | if (opcode == NULL) | |
961 | return; | |
f6428b86 | 962 | |
8b9286ec DE |
963 | if (*str == 0) |
964 | { | |
965 | as_bad ("lower instruction missing"); | |
966 | return; | |
967 | } | |
968 | ||
07b20428 DE |
969 | /* Assemble the lower insn. |
970 | Pass `fixup_count' for `init_fixup_count' so that we don't clobber | |
971 | any fixups the upper insn had. */ | |
972 | opcode = assemble_one_insn (DVP_VULO, | |
973 | vu_lower_opcode_lookup_asm (str), vu_operands, | |
974 | fixup_count, 0, &str, &insns[0]); | |
3a6b8910 | 975 | if (opcode == NULL) |
07b20428 | 976 | return; |
f6428b86 | 977 | |
07b20428 DE |
978 | /* If there were fixups and we're inside mpg, create a machine dependent |
979 | fragment so that we can record the current value of $.mpgloc in fr_symbol. | |
f7306261 DE |
980 | Reminder: it is important to fetch enough space in one call to |
981 | `frag_more'. We use (f - frag_now->fr_literal) to compute where | |
982 | we are and we don't want frag_now to change between calls. */ | |
07b20428 DE |
983 | if (fixup_count != 0 |
984 | && CUR_ASM_STATE == ASM_MPG) | |
985 | { | |
986 | symbolS * cur_mpgloc; | |
987 | ||
988 | /* Ensure we get a new frag. */ | |
989 | frag_wane (frag_now); | |
990 | frag_new (0); | |
991 | ||
992 | /* Compute the current $.mpgloc. */ | |
993 | cur_mpgloc = compute_mpgloc (mpgloc_sym, vif_data_start, | |
994 | expr_build_dot ()); | |
995 | ||
996 | /* We need to use frag_now afterwards, so we can't just call frag_var. | |
997 | Instead we use frag_more and save the value of frag_now in | |
998 | insn_frag. */ | |
999 | f = frag_more (8); | |
1000 | insn_frag = frag_now; | |
1001 | /* Turn the frag into a machine dependent frag. */ | |
1002 | frag_variant (rs_machine_dependent, | |
1003 | 0, /* max chars */ | |
1004 | 0, /* no variable part */ | |
1005 | RELAX_VU, /* subtype */ | |
1006 | cur_mpgloc, /* $.mpgloc */ | |
1007 | 0, /* offset */ | |
1008 | NULL); /* opcode */ | |
1009 | } | |
1010 | else | |
1011 | { | |
1012 | f = frag_more (8); | |
1013 | insn_frag = frag_now; | |
1014 | } | |
1015 | ||
1016 | /* Write out the instructions. */ | |
1017 | md_number_to_chars (f, insns[0], 4); | |
1018 | md_number_to_chars (f + 4, insns[1], 4); | |
f6428b86 | 1019 | |
f7306261 DE |
1020 | /* Create any fixups. */ |
1021 | for (i = 0; i < fixup_count; ++i) | |
1022 | { | |
1023 | int op_type, reloc_type; | |
276dd6ef | 1024 | const dvp_operand *operand; |
07b20428 | 1025 | dvp_cpu cpu; |
f7306261 DE |
1026 | |
1027 | /* Create a fixup for this operand. | |
1028 | At this point we do not use a bfd_reloc_code_real_type for | |
1029 | operands residing in the insn, but instead just use the | |
1030 | operand index. This lets us easily handle fixups for any | |
1031 | operand type, although that is admittedly not a very exciting | |
1032 | feature. We pick a BFD reloc type in md_apply_fix. */ | |
1033 | ||
07b20428 | 1034 | cpu = fixups[i].cpu; |
f7306261 | 1035 | op_type = fixups[i].opindex; |
95bfad6d | 1036 | reloc_type = encode_fixup_reloc_type (cpu, op_type); |
276dd6ef | 1037 | operand = &vu_operands[op_type]; |
07b20428 DE |
1038 | |
1039 | /* Branch operands inside mpg have to be handled specially. | |
1040 | We want a pc relative relocation in a section different from our own. | |
1041 | See the br-2.s dejagnu testcase for a good example. */ | |
1042 | if (CUR_ASM_STATE == ASM_MPG | |
1043 | && (operand->flags & DVP_OPERAND_RELATIVE_BRANCH) != 0) | |
1044 | { | |
1045 | symbolS *e1,*e2,*diff_expr; | |
1046 | ||
1047 | /* For "br foo" we want "foo - (. + 8)". */ | |
1048 | e1 = expr_build_binary (O_add, insn_frag->fr_symbol, | |
1049 | expr_build_uconstant (8)); | |
1050 | e2 = make_expr_symbol (&fixups[i].exp); | |
1051 | diff_expr = expr_build_binary (O_subtract, e2, e1); | |
1052 | fixups[i].exp.X_op = O_symbol; | |
1053 | fixups[i].exp.X_add_symbol = diff_expr; | |
1054 | fixups[i].exp.X_add_number = 0; | |
1055 | } | |
1056 | ||
1057 | fix_new_exp (insn_frag, f + fixups[i].offset - insn_frag->fr_literal, 4, | |
f7306261 | 1058 | &fixups[i].exp, |
07b20428 DE |
1059 | CUR_ASM_STATE == ASM_MPG /* pcrel */ |
1060 | ? 0 | |
1061 | : (operand->flags & DVP_OPERAND_RELATIVE_BRANCH) != 0, | |
f7306261 DE |
1062 | (bfd_reloc_code_real_type) reloc_type); |
1063 | } | |
1064 | ||
07b20428 DE |
1065 | /* If this was the "loi" pseudo-insn, we need to set the `i' bit. */ |
1066 | if (strcmp (opcode->mnemonic, "loi") == 0) | |
1067 | f[7] |= 0x80; | |
1068 | ||
1069 | /* Increment the vu insn counter. | |
1070 | If get reach 256 we need to insert an `mpg'. */ | |
1071 | ++vu_count; | |
f7306261 DE |
1072 | } |
1073 | ||
3a6b8910 | 1074 | /* Assemble one instruction at *PSTR. |
f7306261 DE |
1075 | CPU indicates what component we're assembling for. |
1076 | The assembled instruction is stored in INSN_BUF. | |
3a6b8910 | 1077 | OPCODE is a pointer to the head of the hash chain. |
07b20428 DE |
1078 | INIT_FIXUP_COUNT is the initial value for `fixup_count'. |
1079 | It exists to allow the fixups for multiple calls to this insn to be | |
1080 | queued up before actually emitting them. | |
3a6b8910 | 1081 | *PSTR is updated to point passed the parsed instruction. |
f7306261 | 1082 | |
3a6b8910 DE |
1083 | If the insn is successfully parsed the result is a pointer to the opcode |
1084 | entry that successfully matched and *PSTR is updated to point passed | |
1085 | the parsed insn. If an error occurs the result is NULL and *PSTR is left | |
1086 | at some random point in the string (??? may wish to leave it pointing where | |
1087 | the error occured). */ | |
1088 | ||
1089 | static const dvp_opcode * | |
07b20428 DE |
1090 | assemble_one_insn (cpu, opcode, operand_table, init_fixup_count, fixup_offset, |
1091 | pstr, insn_buf) | |
3a6b8910 | 1092 | dvp_cpu cpu; |
276dd6ef DE |
1093 | const dvp_opcode *opcode; |
1094 | const dvp_operand *operand_table; | |
07b20428 DE |
1095 | int init_fixup_count; |
1096 | int fixup_offset; | |
3a6b8910 | 1097 | char **pstr; |
276dd6ef | 1098 | DVP_INSN *insn_buf; |
f7306261 | 1099 | { |
3a6b8910 | 1100 | char *start, *str; |
f6428b86 DE |
1101 | |
1102 | /* Keep looking until we find a match. */ | |
1103 | ||
3a6b8910 | 1104 | start = str = *pstr; |
276dd6ef | 1105 | for ( ; opcode != NULL; opcode = DVP_OPCODE_NEXT_ASM (opcode)) |
f6428b86 | 1106 | { |
91572941 | 1107 | int past_opcode_p, num_suffixes; |
f6428b86 | 1108 | const unsigned char *syn; |
f6428b86 DE |
1109 | |
1110 | /* Ensure the mnemonic part matches. */ | |
1111 | for (str = start, syn = opcode->mnemonic; *syn != '\0'; ++str, ++syn) | |
1112 | if (tolower (*str) != tolower (*syn)) | |
1113 | break; | |
1114 | if (*syn != '\0') | |
1115 | continue; | |
f6428b86 DE |
1116 | |
1117 | /* Scan the syntax string. If it doesn't match, try the next one. */ | |
1118 | ||
276dd6ef | 1119 | dvp_opcode_init_parse (); |
91572941 | 1120 | insn_buf[opcode->opcode_word] = opcode->value; |
07b20428 | 1121 | fixup_count = init_fixup_count; |
f6428b86 DE |
1122 | past_opcode_p = 0; |
1123 | num_suffixes = 0; | |
f6428b86 DE |
1124 | |
1125 | /* We don't check for (*str != '\0') here because we want to parse | |
1126 | any trailing fake arguments in the syntax string. */ | |
1127 | for (/*str = start, */ syn = opcode->syntax; *syn != '\0'; ) | |
1128 | { | |
1129 | int mods,index; | |
276dd6ef | 1130 | const dvp_operand *operand; |
f6428b86 | 1131 | const char *errmsg; |
8b901ef8 | 1132 | long value; |
f6428b86 | 1133 | |
fbe2ad46 DE |
1134 | /* Non operand chars must match exactly. |
1135 | Operand chars that are letters are not part of symbols | |
1136 | and are case insensitive. */ | |
f6428b86 DE |
1137 | if (*syn < 128) |
1138 | { | |
fbe2ad46 | 1139 | if (tolower (*str) == tolower (*syn)) |
f6428b86 DE |
1140 | { |
1141 | if (*syn == ' ') | |
1142 | past_opcode_p = 1; | |
1143 | ++syn; | |
1144 | ++str; | |
1145 | } | |
1146 | else | |
1147 | break; | |
1148 | continue; | |
1149 | } | |
1150 | ||
1151 | /* We have a suffix or an operand. Pick out any modifiers. */ | |
1152 | mods = 0; | |
276dd6ef DE |
1153 | index = DVP_OPERAND_INDEX (*syn); |
1154 | while (DVP_MOD_P (operand_table[index].flags)) | |
f6428b86 | 1155 | { |
276dd6ef | 1156 | mods |= operand_table[index].flags & DVP_MOD_BITS; |
f6428b86 | 1157 | ++syn; |
276dd6ef | 1158 | index = DVP_OPERAND_INDEX (*syn); |
f6428b86 | 1159 | } |
f7306261 | 1160 | operand = operand_table + index; |
f6428b86 | 1161 | |
276dd6ef | 1162 | if (operand->flags & DVP_OPERAND_FAKE) |
f6428b86 | 1163 | { |
a48a6f23 | 1164 | long value = 0; |
91572941 DE |
1165 | |
1166 | if (operand->flags & DVP_OPERAND_DMA_INLINE) | |
1167 | { | |
8151801a | 1168 | inline_dma_data ((mods & DVP_OPERAND_AUTOCOUNT) != 0, |
91572941 DE |
1169 | insn_buf); |
1170 | ++syn; | |
1171 | continue; | |
1172 | } | |
1173 | ||
a48a6f23 DE |
1174 | if (operand->parse) |
1175 | { | |
1176 | errmsg = NULL; | |
1177 | value = (*operand->parse) (opcode, operand, mods, | |
1178 | &str, &errmsg); | |
1179 | if (errmsg) | |
1180 | break; | |
1181 | } | |
f6428b86 DE |
1182 | if (operand->insert) |
1183 | { | |
f62a42d0 | 1184 | errmsg = NULL; |
a48a6f23 DE |
1185 | (*operand->insert) (opcode, operand, mods, insn_buf, |
1186 | (offsetT) value, &errmsg); | |
f6428b86 DE |
1187 | /* If we get an error, go on to try the next insn. */ |
1188 | if (errmsg) | |
1189 | break; | |
1190 | } | |
1191 | ++syn; | |
8b901ef8 | 1192 | continue; |
f6428b86 | 1193 | } |
8b901ef8 | 1194 | |
f6428b86 | 1195 | /* Are we finished with suffixes? */ |
8b901ef8 | 1196 | if (!past_opcode_p) |
f6428b86 | 1197 | { |
f6428b86 DE |
1198 | long suf_value; |
1199 | ||
276dd6ef | 1200 | if (!(operand->flags & DVP_OPERAND_SUFFIX)) |
8b901ef8 | 1201 | as_fatal ("internal error: bad opcode table, missing suffix flag"); |
f6428b86 | 1202 | |
1554baf3 DE |
1203 | /* Parse the suffix. If we're at a space in the input string |
1204 | there are no more suffixes. Suffix parse routines must be | |
1205 | prepared to deal with this. */ | |
f7306261 | 1206 | errmsg = NULL; |
19f12fb4 | 1207 | suf_value = (*operand->parse) (opcode, operand, mods, &str, |
95bfad6d | 1208 | &errmsg); |
f6428b86 DE |
1209 | if (errmsg) |
1210 | { | |
fbe2ad46 DE |
1211 | /* This can happen, for example, in ARC's in "blle foo" and |
1212 | we're currently using the template "b%q%.n %j". The "bl" | |
1213 | insn occurs later in the table so "lle" isn't an illegal | |
1214 | suffix. */ | |
f6428b86 DE |
1215 | break; |
1216 | } | |
6856244d | 1217 | |
f6428b86 | 1218 | /* Insert the suffix's value into the insn. */ |
6856244d DE |
1219 | insert_operand (cpu, opcode, operand, mods, insn_buf, |
1220 | (offsetT) suf_value, &errmsg); | |
f6428b86 | 1221 | |
f6428b86 | 1222 | ++syn; |
8b901ef8 | 1223 | continue; |
f6428b86 | 1224 | } |
f6428b86 | 1225 | |
8b901ef8 DE |
1226 | /* This is an operand, either a register or an expression of |
1227 | some kind. */ | |
1228 | ||
1229 | value = 0; | |
1230 | ||
1231 | if (operand->flags & DVP_OPERAND_SUFFIX) | |
1232 | as_fatal ("internal error: bad opcode table, suffix wrong"); | |
f6428b86 | 1233 | |
8b901ef8 DE |
1234 | /* Is there anything left to parse? |
1235 | We don't check for this at the top because we want to parse | |
1236 | any trailing fake arguments in the syntax string. */ | |
1237 | /* ??? This doesn't allow operands with a legal value of "". */ | |
1238 | if (*str == '\0') | |
1239 | break; | |
1240 | ||
1241 | /* Parse the operand. */ | |
1242 | if (operand->flags & DVP_OPERAND_FLOAT) | |
1243 | { | |
1244 | errmsg = 0; | |
1245 | value = parse_float (&str, &errmsg); | |
1246 | if (errmsg) | |
f6428b86 | 1247 | break; |
8b901ef8 DE |
1248 | } |
1249 | else if ((operand->flags & DVP_OPERAND_DMA_ADDR) | |
1250 | && (mods & DVP_OPERAND_AUTOCOUNT)) | |
1251 | { | |
1252 | errmsg = 0; | |
1253 | value = parse_dma_addr_autocount (opcode, operand, mods, | |
1254 | insn_buf, &str, &errmsg); | |
1255 | if (errmsg) | |
1256 | break; | |
1257 | } | |
1258 | else | |
1259 | { | |
1260 | char *origstr,*hold; | |
1261 | expressionS exp; | |
f6428b86 | 1262 | |
8b901ef8 DE |
1263 | /* First see if there is a special parser. */ |
1264 | origstr = str; | |
1265 | if (operand->parse) | |
f6428b86 | 1266 | { |
f7306261 | 1267 | errmsg = NULL; |
95bfad6d DE |
1268 | value = (*operand->parse) (opcode, operand, mods, |
1269 | &str, &errmsg); | |
71af45ec DE |
1270 | if (errmsg) |
1271 | break; | |
f6428b86 | 1272 | } |
8b901ef8 DE |
1273 | |
1274 | /* If there wasn't a special parser, or there was and it | |
1275 | left the input stream unchanged, use the general | |
1276 | expression parser. */ | |
1277 | if (str == origstr) | |
f6428b86 DE |
1278 | { |
1279 | hold = input_line_pointer; | |
1280 | input_line_pointer = str; | |
8b901ef8 DE |
1281 | /* Set cur_{opcode,operand} for md_operand. */ |
1282 | cur_opcode = opcode; | |
1283 | cur_operand = operand; | |
f6428b86 | 1284 | expression (&exp); |
8b901ef8 | 1285 | cur_opcode = NULL; |
f6428b86 DE |
1286 | str = input_line_pointer; |
1287 | input_line_pointer = hold; | |
1288 | ||
71af45ec DE |
1289 | if (exp.X_op == O_illegal |
1290 | || exp.X_op == O_absent) | |
1291 | break; | |
f6428b86 | 1292 | else if (exp.X_op == O_constant) |
71af45ec | 1293 | value = exp.X_add_number; |
f6428b86 | 1294 | else if (exp.X_op == O_register) |
8b901ef8 | 1295 | as_fatal ("internal error: got O_register"); |
f6428b86 DE |
1296 | else |
1297 | { | |
1298 | /* We need to generate a fixup for this expression. */ | |
f7306261 | 1299 | if (fixup_count >= MAX_FIXUPS) |
8b901ef8 | 1300 | as_fatal ("internal error: too many fixups"); |
07b20428 | 1301 | fixups[fixup_count].cpu = cpu; |
f7306261 DE |
1302 | fixups[fixup_count].exp = exp; |
1303 | fixups[fixup_count].opindex = index; | |
1ece1d56 DE |
1304 | /* FIXME: Revisit. Do we really need operand->word? |
1305 | The endianness of a 128 bit DMAtag is rather | |
1306 | twisted. How about defining word 0 as the word with | |
1307 | the lowest address and basing operand-shift off that. | |
1308 | operand->word could then be deleted. */ | |
07b20428 | 1309 | fixups[fixup_count].offset = fixup_offset; |
1ece1d56 | 1310 | if (operand->word != 0) |
07b20428 | 1311 | fixups[fixup_count].offset += operand->word * 4; |
1ece1d56 | 1312 | else |
07b20428 | 1313 | fixups[fixup_count].offset += (operand->shift / 32) * 4; |
f7306261 | 1314 | ++fixup_count; |
f6428b86 DE |
1315 | value = 0; |
1316 | } | |
1317 | } | |
8b901ef8 | 1318 | } |
f6428b86 | 1319 | |
8b901ef8 DE |
1320 | /* Insert the register or expression into the instruction. */ |
1321 | errmsg = NULL; | |
1322 | insert_operand (cpu, opcode, operand, mods, insn_buf, | |
1323 | (offsetT) value, &errmsg); | |
1324 | if (errmsg != (const char *) NULL) | |
1325 | break; | |
f6428b86 | 1326 | |
8b901ef8 | 1327 | ++syn; |
f6428b86 DE |
1328 | } |
1329 | ||
1330 | /* If we're at the end of the syntax string, we're done. */ | |
f6428b86 DE |
1331 | if (*syn == '\0') |
1332 | { | |
1333 | int i; | |
f6428b86 DE |
1334 | |
1335 | /* For the moment we assume a valid `str' can only contain blanks | |
1336 | now. IE: We needn't try again with a longer version of the | |
1337 | insn and it is assumed that longer versions of insns appear | |
1338 | before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ | |
1339 | ||
1340 | while (isspace (*str)) | |
1341 | ++str; | |
1342 | ||
61e09fac DE |
1343 | if (*str != '\0' |
1344 | #ifndef VERTICAL_BAR_SEPARATOR | |
3a6b8910 | 1345 | && cpu != DVP_VUUP |
61e09fac DE |
1346 | #endif |
1347 | ) | |
f6428b86 DE |
1348 | as_bad ("junk at end of line: `%s'", str); |
1349 | ||
f7306261 DE |
1350 | /* It's now up to the caller to emit the instruction and any |
1351 | relocations. */ | |
3a6b8910 DE |
1352 | *pstr = str; |
1353 | return opcode; | |
f6428b86 DE |
1354 | } |
1355 | ||
1356 | /* Try the next entry. */ | |
1357 | } | |
1358 | ||
1359 | as_bad ("bad instruction `%s'", start); | |
61e09fac | 1360 | return 0; |
209fb346 | 1361 | } |
498fcb9c | 1362 | \f |
b6d331b9 | 1363 | /* Given a dvp cpu type, return it's STO_DVP value. |
7f28a81d | 1364 | The label prefix to use is stored in *PNAME. */ |
b6d331b9 DE |
1365 | |
1366 | static int | |
1367 | cpu_sto (cpu, pname) | |
1368 | dvp_cpu cpu; | |
1369 | const char **pname; | |
1370 | { | |
1371 | switch (cpu) | |
1372 | { | |
1373 | case DVP_DMA : *pname = ".dma."; return STO_DVP_DMA; | |
1374 | case DVP_VIF : *pname = ".vif."; return STO_DVP_VIF; | |
1375 | case DVP_GIF : *pname = ".gif."; return STO_DVP_GIF; | |
1376 | case DVP_VUUP : *pname = ".vu."; return STO_DVP_VU; | |
1377 | } | |
1378 | abort (); | |
1379 | } | |
1380 | ||
1381 | /* Record the current mach type in the object file. | |
1382 | If FORCE_NEXT_P is non-zero, force a label to be emitted the next time | |
1383 | we're called. This is useful for variable length instructions that can | |
1384 | have labels embedded within them. */ | |
57d0c830 DE |
1385 | |
1386 | static void | |
b6d331b9 DE |
1387 | record_mach (cpu, force_next_p) |
1388 | dvp_cpu cpu; | |
1389 | int force_next_p; | |
57d0c830 DE |
1390 | { |
1391 | symbolS *label; | |
b6d331b9 DE |
1392 | const char *name; |
1393 | int sto; | |
57d0c830 | 1394 | |
b6d331b9 | 1395 | if (cpu == cur_cpu) |
57d0c830 DE |
1396 | return; |
1397 | ||
b6d331b9 DE |
1398 | sto = cpu_sto (cpu, &name); |
1399 | ||
1400 | label = create_colon_label (sto, "", unique_name (name)); | |
57d0c830 | 1401 | |
b6d331b9 DE |
1402 | if (force_next_p) |
1403 | cur_cpu = DVP_UNKNOWN; | |
1404 | else | |
1405 | cur_cpu = cpu; | |
57d0c830 DE |
1406 | } |
1407 | ||
3b4389e2 DE |
1408 | /* Force emission of mach type label at next insn. |
1409 | This isn't static as TC_START_LABEL uses it. | |
1410 | The result is the value of TC_START_LABEL. */ | |
1411 | ||
1412 | int | |
1413 | force_mach_label () | |
1414 | { | |
1415 | cur_cpu = DVP_UNKNOWN; | |
1416 | return 1; | |
1417 | } | |
1418 | ||
e4d77412 | 1419 | /* Push the current parsing state to NEW_STATE. */ |
498fcb9c DE |
1420 | |
1421 | static void | |
1422 | push_asm_state (new_state) | |
1423 | asm_state new_state; | |
1424 | { | |
e4d77412 FCE |
1425 | asm_state cur_state = CUR_ASM_STATE; |
1426 | ||
1427 | ++cur_state_level; | |
1428 | if (cur_state_level == MAX_STATE_DEPTH) | |
8b901ef8 | 1429 | as_fatal ("internal error: unexpected state push"); |
e4d77412 | 1430 | asm_state_stack[cur_state_level] = new_state; |
498fcb9c DE |
1431 | } |
1432 | ||
1433 | /* TOP_OK_P is non-zero if it's ok that we're at the top of the stack. | |
e4d77412 | 1434 | If so we reset the state to ASM_INIT. */ |
209fb346 | 1435 | |
498fcb9c DE |
1436 | static void |
1437 | pop_asm_state (top_ok_p) | |
1438 | int top_ok_p; | |
1439 | { | |
e4d77412 | 1440 | if (cur_state_level == 0) |
498fcb9c | 1441 | { |
e4d77412 | 1442 | if (! top_ok_p) |
8b901ef8 | 1443 | as_fatal ("internal error: unexpected state pop"); |
e4d77412 | 1444 | CUR_ASM_STATE = ASM_INIT; |
498fcb9c DE |
1445 | } |
1446 | else | |
e4d77412 | 1447 | --cur_state_level; |
498fcb9c DE |
1448 | } |
1449 | ||
e4d77412 FCE |
1450 | /* Set the top level assembler state. */ |
1451 | ||
498fcb9c | 1452 | static void |
e4d77412 | 1453 | set_asm_state (state, insn_name) |
498fcb9c | 1454 | asm_state state; |
e4d77412 | 1455 | const char *insn_name; |
498fcb9c | 1456 | { |
e4d77412 FCE |
1457 | if (insn_name) |
1458 | { | |
1459 | if (CUR_ASM_STATE != ASM_INIT) | |
1460 | as_bad ("illegal place for `%s' instruction", insn_name); | |
1461 | } | |
1462 | cur_state_level = 0; | |
498fcb9c DE |
1463 | CUR_ASM_STATE = state; |
1464 | } | |
1465 | \f | |
209fb346 DE |
1466 | void |
1467 | md_operand (expressionP) | |
1468 | expressionS *expressionP; | |
1469 | { | |
8b901ef8 DE |
1470 | /* Check if this is a '*' for mpgloc. */ |
1471 | if (cur_opcode | |
1472 | && (cur_opcode->flags & VIF_OPCODE_MPG) != 0 | |
1473 | && (cur_operand->flags & DVP_OPERAND_VU_ADDRESS) != 0 | |
1474 | && *input_line_pointer == '*') | |
1475 | { | |
1476 | expressionP->X_op = O_symbol; | |
1477 | expressionP->X_add_symbol = mpgloc_sym; | |
1478 | expressionP->X_add_number = 0; | |
1479 | ||
8b901ef8 DE |
1480 | /* Advance over the '*'. */ |
1481 | ++input_line_pointer; | |
e4d77412 | 1482 | return; |
8b901ef8 | 1483 | } |
209fb346 DE |
1484 | } |
1485 | ||
1486 | valueT | |
1487 | md_section_align (segment, size) | |
1488 | segT segment; | |
1489 | valueT size; | |
1490 | { | |
1491 | int align = bfd_get_section_alignment (stdoutput, segment); | |
1492 | return ((size + (1 << align) - 1) & (-1 << align)); | |
1493 | } | |
1494 | ||
1495 | symbolS * | |
1496 | md_undefined_symbol (name) | |
1497 | char *name; | |
1498 | { | |
1499 | return 0; | |
1500 | } | |
e1b747c4 DE |
1501 | |
1502 | /* Called after parsing the file via md_after_pass_hook. */ | |
1503 | ||
1504 | void | |
69312dac | 1505 | dvp_after_pass_hook () |
e1b747c4 | 1506 | { |
7f28a81d DE |
1507 | /* If doing dma packing, ensure the last dma tag is filled out. */ |
1508 | if (dma_pack_vif_p) | |
1509 | { | |
1510 | /* Nothing to do as vifnops are zero and frag_align at beginning | |
1511 | of dmatag is all we need. */ | |
1512 | } | |
1513 | ||
d3c6610c DE |
1514 | #if 0 /* ??? Doesn't work unless we keep track of the nested include file |
1515 | level. */ | |
e1b747c4 | 1516 | /* Check for missing .EndMpg, and supply one if necessary. */ |
498fcb9c | 1517 | if (CUR_ASM_STATE == ASM_MPG) |
8b901ef8 | 1518 | s_endmpg (ENDMPG_INTERNAL); |
498fcb9c | 1519 | else if (CUR_ASM_STATE == ASM_DIRECT) |
e1b747c4 | 1520 | s_enddirect (0); |
498fcb9c | 1521 | else if (CUR_ASM_STATE == ASM_UNPACK) |
e1b747c4 | 1522 | s_endunpack (0); |
d3c6610c | 1523 | #endif |
e1b747c4 | 1524 | } |
69312dac | 1525 | |
07b20428 | 1526 | /* Called via tc_frob_label when a label is defined. */ |
69312dac DE |
1527 | |
1528 | void | |
1529 | dvp_frob_label (sym) | |
1530 | symbolS *sym; | |
1531 | { | |
07b20428 DE |
1532 | const char * name = S_GET_NAME (sym); |
1533 | ||
b6d331b9 DE |
1534 | /* All labels in vu code must be specially marked for the disassembler. |
1535 | The disassembler ignores all previous information at each new label | |
1536 | (that has a higher address than the last one). */ | |
69312dac DE |
1537 | if (CUR_ASM_STATE == ASM_MPG |
1538 | || CUR_ASM_STATE == ASM_VU) | |
1539 | S_SET_OTHER (sym, STO_DVP_VU); | |
07b20428 DE |
1540 | |
1541 | /* If inside an mpg, move vu space labels to their own section and create | |
cb74aaa5 | 1542 | the corresponding _$ version in normal space. */ |
07b20428 DE |
1543 | |
1544 | if (CUR_ASM_STATE == ASM_MPG | |
1545 | /* Only do this special processing for user specified symbols. | |
1546 | Not sure how we can distinguish them other than by some prefix. */ | |
cb74aaa5 DE |
1547 | && *name != '.' && *name != '$' |
1548 | /* Check for recursive invocation creating the _$name. */ | |
c371a664 DE |
1549 | && strncmp (name, VU_LABEL_PREFIX, sizeof (VU_LABEL_PREFIX) - 1) != 0 |
1550 | /* -gstabs creates FAKE_LABEL_NAME labels. There's probably a better | |
1551 | test than this. */ | |
1552 | && ! S_IS_LOCAL (sym)) | |
07b20428 | 1553 | { |
1554baf3 | 1554 | /* Move this symbol to the vu overlay. */ |
07b20428 DE |
1555 | symbolS * cur_mpgloc = compute_mpgloc (mpgloc_sym, vif_data_start, |
1556 | expr_build_dot ()); | |
1554baf3 DE |
1557 | #if 0 /* Don't do this now, leave in ABS and then move to overlay |
1558 | section before file is written. */ | |
1559 | S_SET_SEGMENT (sym, vuoverlay_section); | |
1560 | #else | |
1561 | /* Record the overlay section this symbol is in. */ | |
1562 | { | |
1563 | ovlysymS *p = (ovlysymS *) xmalloc (sizeof (ovlysymS)); | |
1564 | p->next = ovlysym_table; | |
1565 | p->sec = vuoverlay_section; | |
1566 | p->sym = sym; | |
1567 | ovlysym_table = p; | |
1568 | } | |
07b20428 | 1569 | S_SET_SEGMENT (sym, expr_section); |
1554baf3 | 1570 | #endif |
07b20428 DE |
1571 | sym->sy_value = cur_mpgloc->sy_value; |
1572 | sym->sy_frag = &zero_address_frag; | |
1573 | ||
cb74aaa5 | 1574 | /* Create the _$ symbol in normal space. */ |
07b20428 DE |
1575 | create_colon_label (STO_DVP_VU, VU_LABEL_PREFIX, name); |
1576 | } | |
69312dac | 1577 | } |
1554baf3 DE |
1578 | |
1579 | /* Move vu space symbols into their overlay sections. | |
1580 | Called via tc_frob_file. */ | |
1581 | ||
1582 | void | |
1583 | dvp_frob_file () | |
1584 | { | |
1585 | ovlysymS *p; | |
1586 | ||
1587 | for (p = ovlysym_table; p; p = p->next) | |
1588 | { | |
1589 | /* See the comment near tc_frob_file in write.c. | |
1590 | We are responsible for updating sym->bsym->value. */ | |
1591 | S_SET_SEGMENT (p->sym, p->sec); | |
1592 | /* Adjust for the section's vma. */ | |
79259a91 DE |
1593 | /* FIXME: bfd doesn't get this right, it adds the section vma |
1594 | back in (in elf.c:swap_out_syms). As a workaround the | |
1595 | section vma is assumed to be zero. Of course, there might | |
1596 | not be a point in setting it to non-zero anyway. */ | |
1554baf3 DE |
1597 | p->sym->bsym->value -= bfd_get_section_vma (stdoutput, p->sec); |
1598 | } | |
1599 | } | |
209fb346 | 1600 | \f |
8b901ef8 DE |
1601 | /* mpg/direct alignment is handled via relaxation */ |
1602 | ||
1603 | /* Return an initial guess of the length by which a fragment must grow to | |
1604 | hold a branch to reach its destination. | |
1605 | Also updates fr_type/fr_subtype as necessary. | |
1606 | ||
1607 | Called just before doing relaxation. | |
1608 | Any symbol that is now undefined will not become defined. | |
1609 | The guess for fr_var is ACTUALLY the growth beyond fr_fix. | |
1610 | Whatever we do to grow fr_fix or fr_var contributes to our returned value. | |
1611 | Although it may not be explicit in the frag, pretend fr_var starts with a | |
1612 | 0 value. */ | |
1613 | ||
1614 | int | |
1615 | md_estimate_size_before_relax (fragP, segment) | |
1616 | fragS * fragP; | |
1617 | segT segment; | |
1618 | { | |
1619 | /* Our initial estimate is always 0. */ | |
1620 | return 0; | |
1621 | } | |
1622 | ||
1623 | /* Perform the relaxation. | |
2dc7ca50 | 1624 | STRETCH is the amount the start of the frag has already been shifted by. |
8b901ef8 | 1625 | All we have to do is figure out how many bytes we need to insert to |
07b20428 DE |
1626 | get to the recorded symbol (which is at the required alignment). |
1627 | This function is also called for machine dependent vu insn frags. | |
1628 | In this case the growth is always 0. */ | |
8b901ef8 DE |
1629 | |
1630 | long | |
1631 | dvp_relax_frag (fragP, stretch) | |
1632 | fragS * fragP; | |
1633 | long stretch; | |
1634 | { | |
1635 | /* Address of variable part. */ | |
1636 | long address = fragP->fr_address + fragP->fr_fix; | |
1637 | /* Symbol marking start of data. */ | |
1638 | symbolS * symbolP = fragP->fr_symbol; | |
1639 | /* Address of the symbol. */ | |
07b20428 | 1640 | long target; |
8b901ef8 DE |
1641 | long growth; |
1642 | ||
1643 | /* subtype >= 10 means "done" */ | |
07b20428 | 1644 | if (RELAX_DONE_P (fragP->fr_subtype)) |
8b901ef8 DE |
1645 | return 0; |
1646 | ||
07b20428 DE |
1647 | /* vu insn? */ |
1648 | if (fragP->fr_subtype == RELAX_VU) | |
1649 | { | |
1650 | fragP->fr_subtype = RELAX_ENCODE (RELAX_VU, 0); | |
1651 | return 0; | |
1652 | } | |
1653 | ||
1654 | target = S_GET_VALUE (symbolP) + symbolP->sy_frag->fr_address; | |
1655 | ||
1656 | if (fragP->fr_subtype == RELAX_MPG) | |
8b901ef8 | 1657 | { |
2dc7ca50 DE |
1658 | /* The frag the symbol is in hasn't been relaxed yet so any .org |
1659 | adjustments haven't been applied to it. We know the symbol | |
1660 | is the address of the next frag so adjust target by stretch. */ | |
1661 | target += stretch; | |
8b901ef8 DE |
1662 | growth = target - address; |
1663 | if (growth < 0) | |
1664 | as_fatal ("internal error: bad mpg alignment handling"); | |
07b20428 | 1665 | fragP->fr_subtype = RELAX_ENCODE (RELAX_MPG, growth); |
8b901ef8 DE |
1666 | return growth; |
1667 | } | |
1668 | ||
07b20428 | 1669 | if (fragP->fr_subtype == RELAX_DIRECT) |
8b901ef8 | 1670 | { |
2dc7ca50 DE |
1671 | /* The frag the symbol is in hasn't been relaxed yet so any .org |
1672 | adjustments haven't been applied to it. We know the symbol | |
1673 | is the address of the next frag so adjust target by stretch. */ | |
1674 | target += stretch; | |
8b901ef8 DE |
1675 | growth = target - address; |
1676 | if (growth < 0) | |
1677 | as_fatal ("internal error: bad direct alignment handling"); | |
07b20428 | 1678 | fragP->fr_subtype = RELAX_ENCODE (RELAX_DIRECT, growth); |
8b901ef8 DE |
1679 | return growth; |
1680 | } | |
1681 | ||
1682 | as_fatal ("internal error: unknown fr_subtype"); | |
1683 | } | |
1684 | ||
1685 | /* *fragP has been relaxed to its final size, and now needs to have | |
1686 | the bytes inside it modified to conform to the new size. | |
1687 | ||
1688 | Called after relaxation is finished. | |
1689 | fragP->fr_type == rs_machine_dependent. | |
1690 | fragP->fr_subtype is the subtype of what the address relaxed to. */ | |
1691 | ||
1692 | void | |
1693 | md_convert_frag (abfd, sec, fragP) | |
1694 | bfd * abfd; | |
1695 | segT sec; | |
1696 | fragS * fragP; | |
1697 | { | |
07b20428 | 1698 | int growth = RELAX_GROWTH (fragP->fr_subtype); |
8b901ef8 DE |
1699 | |
1700 | fragP->fr_fix += growth; | |
1701 | ||
1702 | if (growth != 0) | |
1703 | { | |
1704 | /* We had to grow this fragment. Shift the mpg/direct insn to the end | |
1705 | (so it abuts the following data). */ | |
1706 | DVP_INSN insn = bfd_getl32 (fragP->fr_opcode); | |
1707 | md_number_to_chars (fragP->fr_opcode, VIFNOP, 4); | |
bfb27620 DE |
1708 | if (growth > 4) |
1709 | md_number_to_chars (fragP->fr_opcode + 4, VIFNOP, 4); | |
8b901ef8 | 1710 | if (growth > 8) |
bfb27620 | 1711 | md_number_to_chars (fragP->fr_opcode + 8, VIFNOP, 4); |
8b901ef8 DE |
1712 | md_number_to_chars (fragP->fr_literal + fragP->fr_fix - 4, insn, 4); |
1713 | ||
1714 | /* Adjust fr_opcode so md_apply_fix3 works with the right bytes. */ | |
1715 | fragP->fr_opcode += growth; | |
1716 | } | |
1717 | } | |
1718 | \f | |
209fb346 DE |
1719 | /* Functions concerning relocs. */ |
1720 | ||
95bfad6d | 1721 | /* Spacing between each cpu type's operand numbers. |
7f28a81d | 1722 | Should be at least as big as any operand table. */ |
95bfad6d DE |
1723 | #define RELOC_SPACING 256 |
1724 | ||
1725 | /* Given a cpu type and operand number, return a temporary reloc type | |
1726 | for use in generating the fixup that encodes the cpu type and operand | |
1727 | number. */ | |
1728 | ||
1729 | static int | |
1730 | encode_fixup_reloc_type (cpu, opnum) | |
3a6b8910 | 1731 | dvp_cpu cpu; |
95bfad6d DE |
1732 | int opnum; |
1733 | { | |
1734 | return (int) BFD_RELOC_UNUSED + ((int) cpu * RELOC_SPACING) + opnum; | |
1735 | } | |
1736 | ||
1737 | /* Given a fixup reloc type, decode it into cpu type and operand. */ | |
1738 | ||
1739 | static void | |
1740 | decode_fixup_reloc_type (fixup_reloc, cpuP, operandP) | |
1741 | int fixup_reloc; | |
3a6b8910 | 1742 | dvp_cpu *cpuP; |
276dd6ef | 1743 | const dvp_operand **operandP; |
95bfad6d | 1744 | { |
3a6b8910 | 1745 | dvp_cpu cpu = (fixup_reloc - (int) BFD_RELOC_UNUSED) / RELOC_SPACING; |
95bfad6d DE |
1746 | int opnum = (fixup_reloc - (int) BFD_RELOC_UNUSED) % RELOC_SPACING; |
1747 | ||
1748 | *cpuP = cpu; | |
1749 | switch (cpu) | |
1750 | { | |
3a6b8910 DE |
1751 | case DVP_VUUP : *operandP = &vu_operands[opnum]; break; |
1752 | case DVP_VULO : *operandP = &vu_operands[opnum]; break; | |
1753 | case DVP_DMA : *operandP = &dma_operands[opnum]; break; | |
b4cbabb8 DE |
1754 | case DVP_VIF : *operandP = &vif_operands[opnum]; break; |
1755 | case DVP_GIF : *operandP = &gif_operands[opnum]; break; | |
8b901ef8 | 1756 | default : as_fatal ("internal error: bad fixup encoding"); |
95bfad6d DE |
1757 | } |
1758 | } | |
1759 | ||
209fb346 DE |
1760 | /* The location from which a PC relative jump should be calculated, |
1761 | given a PC relative reloc. */ | |
1762 | ||
1763 | long | |
1764 | md_pcrel_from_section (fixP, sec) | |
1765 | fixS *fixP; | |
1766 | segT sec; | |
1767 | { | |
1768 | if (fixP->fx_addsy != (symbolS *) NULL | |
1769 | && (! S_IS_DEFINED (fixP->fx_addsy) | |
1770 | || S_GET_SEGMENT (fixP->fx_addsy) != sec)) | |
1771 | { | |
8b901ef8 DE |
1772 | /* If fx_tcbit is set this is for a vif insn and thus should never |
1773 | happen in correct code. */ | |
1774 | /* ??? The error message could be a bit more descriptive. */ | |
1775 | if (fixP->fx_tcbit) | |
1776 | as_bad ("unable to compute length of vif insn"); | |
209fb346 | 1777 | /* The symbol is undefined (or is defined but not in this section). |
b6675c1a DE |
1778 | Let the linker figure it out. +8: branch offsets are relative to the |
1779 | delay slot. */ | |
1780 | return 8; | |
209fb346 DE |
1781 | } |
1782 | ||
8b901ef8 DE |
1783 | /* If fx_tcbit is set, this is a vif end-of-variable-length-insn marker. |
1784 | In this case the offset is relative to the start of data. | |
1785 | Otherwise we assume this is a vu branch. In this case | |
1786 | offsets are calculated based on the address of the next insn. */ | |
1787 | if (fixP->fx_tcbit) | |
1788 | { | |
1789 | /* As a further refinement, if fr_opcode is NULL this is `unpack' | |
1790 | which doesn't involve any relaxing. */ | |
1791 | if (fixP->fx_frag->fr_opcode == NULL) | |
1792 | return fixP->fx_frag->fr_address + fixP->fx_where + 4; | |
1793 | else | |
1794 | return fixP->fx_frag->fr_address + fixP->fx_frag->fr_fix; | |
1795 | } | |
1796 | else | |
1797 | return ((fixP->fx_frag->fr_address + fixP->fx_where) & -8L) + 8; | |
209fb346 DE |
1798 | } |
1799 | ||
1800 | /* Apply a fixup to the object code. This is called for all the | |
1801 | fixups we generated by calls to fix_new_exp. At this point all symbol | |
1802 | values should be fully resolved, and we attempt to completely resolve the | |
1803 | reloc. If we can not do that, we determine the correct reloc code and put | |
1804 | it back in the fixup. */ | |
1805 | ||
1806 | int | |
1807 | md_apply_fix3 (fixP, valueP, seg) | |
1808 | fixS *fixP; | |
1809 | valueT *valueP; | |
1810 | segT seg; | |
1811 | { | |
1812 | char *where = fixP->fx_frag->fr_literal + fixP->fx_where; | |
1813 | valueT value; | |
1814 | ||
020ba60b DE |
1815 | /* FIXME FIXME FIXME: The value we are passed in *valueP includes |
1816 | the symbol values. Since we are using BFD_ASSEMBLER, if we are | |
1817 | doing this relocation the code in write.c is going to call | |
1818 | bfd_perform_relocation, which is also going to use the symbol | |
1819 | value. That means that if the reloc is fully resolved we want to | |
1820 | use *valueP since bfd_perform_relocation is not being used. | |
1821 | However, if the reloc is not fully resolved we do not want to use | |
1822 | *valueP, and must use fx_offset instead. However, if the reloc | |
1823 | is PC relative, we do want to use *valueP since it includes the | |
1824 | result of md_pcrel_from. This is confusing. */ | |
1825 | ||
1826 | if (fixP->fx_addsy == (symbolS *) NULL) | |
1827 | { | |
1828 | value = *valueP; | |
1829 | fixP->fx_done = 1; | |
1830 | } | |
1831 | else if (fixP->fx_pcrel) | |
1832 | { | |
1833 | value = *valueP; | |
1834 | } | |
1835 | else | |
1836 | { | |
1837 | value = fixP->fx_offset; | |
1838 | if (fixP->fx_subsy != (symbolS *) NULL) | |
1839 | { | |
1840 | if (S_GET_SEGMENT (fixP->fx_subsy) == absolute_section) | |
1841 | value -= S_GET_VALUE (fixP->fx_subsy); | |
1842 | else | |
1843 | { | |
1844 | /* We can't actually support subtracting a symbol. */ | |
1845 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
1846 | "expression too complex"); | |
1847 | } | |
1848 | } | |
1849 | } | |
1850 | ||
1ece1d56 | 1851 | /* Check for dvp operands. These are indicated with a reloc value |
020ba60b DE |
1852 | >= BFD_RELOC_UNUSED. */ |
1853 | ||
1854 | if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) | |
1855 | { | |
3a6b8910 | 1856 | dvp_cpu cpu; |
276dd6ef DE |
1857 | const dvp_operand *operand; |
1858 | DVP_INSN insn; | |
8b901ef8 DE |
1859 | fragS *fragP = fixP->fx_frag; |
1860 | ||
1861 | /* If this was a relaxable insn, the opcode may have moved. Find it. */ | |
1862 | if (fragP->fr_opcode != NULL) | |
1863 | where = fragP->fr_opcode; | |
020ba60b | 1864 | |
95bfad6d DE |
1865 | decode_fixup_reloc_type ((int) fixP->fx_r_type, |
1866 | & cpu, & operand); | |
020ba60b | 1867 | |
8b901ef8 DE |
1868 | /* For variable length vif insn data lengths, validate the user specified |
1869 | value or install the computed value in the instruction. */ | |
1870 | if (cpu == DVP_VIF | |
1871 | && (operand - vif_operands) == vif_operand_datalen_special) | |
1872 | { | |
a6756468 | 1873 | int insn_type = vif_insn_type (where[3]); |
8b901ef8 DE |
1874 | value = vif_length_value (where[3], |
1875 | fixP->tc_fix_data.wl, fixP->tc_fix_data.cl, | |
1876 | value); | |
1877 | if (fixP->tc_fix_data.user_value != -1) | |
1878 | { | |
a6756468 DE |
1879 | /* We can't do this for unpack insns with wl > cl. */ |
1880 | if ((insn_type != VIF_OPCODE_UNPACK | |
1881 | || (fixP->tc_fix_data.wl <= fixP->tc_fix_data.cl)) | |
1882 | && fixP->tc_fix_data.user_value != value) | |
8b901ef8 DE |
1883 | as_warn_where (fixP->fx_file, fixP->fx_line, |
1884 | "specified length value doesn't match computed value"); | |
1885 | /* Don't override the user specified value. */ | |
1886 | } | |
1887 | else | |
1888 | { | |
1889 | if (output_vif) | |
1890 | { | |
1891 | install_vif_length (where, value); | |
1892 | } | |
1893 | } | |
1894 | fixP->fx_done = 1; | |
1895 | return 1; | |
1896 | } | |
1897 | ||
fa3671a3 DE |
1898 | /* For the gif nloop operand, if it was specified by the user ensure |
1899 | it matches the value we computed. */ | |
1900 | if (cpu == DVP_GIF | |
1901 | && (operand - gif_operands) == gif_operand_nloop) | |
1902 | { | |
1903 | value = compute_nloop (fixP->tc_fix_data.type, | |
1904 | fixP->tc_fix_data.nregs, | |
1905 | value); | |
8b901ef8 | 1906 | if (fixP->tc_fix_data.user_value != -1) |
fa3671a3 DE |
1907 | { |
1908 | check_nloop (fixP->tc_fix_data.type, | |
1909 | fixP->tc_fix_data.nregs, | |
8b901ef8 | 1910 | fixP->tc_fix_data.user_value, |
fa3671a3 DE |
1911 | value, |
1912 | fixP->fx_file, fixP->fx_line); | |
1913 | /* Don't override the user specified value. */ | |
1914 | fixP->fx_done = 1; | |
1915 | return 1; | |
1916 | } | |
1917 | } | |
1918 | ||
e4d77412 FCE |
1919 | /* ??? It might be cleaner to not do this at all here (when ! fx_done) |
1920 | and leave it to bfd_install_relocation. */ | |
1921 | if ((operand->flags & DVP_OPERAND_RELOC_U15_S3) != 0) | |
1922 | value >>= 3; | |
1923 | else if ((operand->flags & DVP_OPERAND_RELOC_11_S4) != 0) | |
1924 | value >>= 4; | |
1925 | ||
020ba60b | 1926 | /* Fetch the instruction, insert the fully resolved operand |
1ece1d56 DE |
1927 | value, and stuff the instruction back again. The fixup is recorded |
1928 | at the appropriate word so pass DVP_MOD_THIS_WORD so any offset | |
1929 | specified in the tables is ignored. */ | |
020ba60b | 1930 | insn = bfd_getl32 ((unsigned char *) where); |
6856244d DE |
1931 | insert_operand_final (cpu, operand, DVP_MOD_THIS_WORD, &insn, |
1932 | (offsetT) value, fixP->fx_file, fixP->fx_line); | |
020ba60b DE |
1933 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); |
1934 | ||
8b901ef8 DE |
1935 | /* If this is mpgloc/unpackloc, we're done. */ |
1936 | if (operand->flags & (DVP_OPERAND_VU_ADDRESS | DVP_OPERAND_UNPACK_ADDRESS)) | |
1937 | fixP->fx_done = 1; | |
1938 | ||
020ba60b DE |
1939 | if (fixP->fx_done) |
1940 | { | |
1941 | /* Nothing else to do here. */ | |
1942 | return 1; | |
1943 | } | |
1944 | ||
1945 | /* Determine a BFD reloc value based on the operand information. | |
1946 | We are only prepared to turn a few of the operands into relocs. */ | |
276dd6ef | 1947 | if ((operand->flags & DVP_OPERAND_RELATIVE_BRANCH) != 0) |
020ba60b | 1948 | { |
1ece1d56 | 1949 | assert (operand->bits == 11 |
020ba60b | 1950 | && operand->shift == 0); |
07b20428 DE |
1951 | |
1952 | /* The fixup isn't recorded as a pc relative branch to some label. | |
1953 | Instead a complicated expression is used to compute the desired | |
1954 | value. Well, that didn't work and we have to emit a reloc. | |
1955 | Things are tricky because the result we want is the difference | |
1956 | of two addresses in a section potentially different from the one | |
1957 | the reloc is in. Ugh. | |
1958 | The solution is to emit two relocs, one that adds the target | |
1959 | address and one that subtracts the source address + 8 (the | |
1960 | linker will perform the byte->dword conversion). | |
1961 | This is rather complicated and rather than risk breaking | |
1962 | existing code we fall back on the old way if the file only | |
1963 | contains vu code. In this case the file is intended to | |
1964 | be fully linked with other vu code and thus we have a normal | |
1965 | situation where the relocation directly corresponds to the | |
1966 | branch insn. */ | |
1967 | ||
1968 | if (non_vu_insn_seen_p) | |
1969 | { | |
1970 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
1971 | "can't handle mpg loaded vu code with branch relocations"); | |
7ebb61af DE |
1972 | fixP->fx_done = 1; |
1973 | return 1; | |
07b20428 DE |
1974 | } |
1975 | else | |
1976 | { | |
1977 | fixP->fx_r_type = BFD_RELOC_MIPS_DVP_11_PCREL; | |
1978 | } | |
020ba60b | 1979 | } |
91572941 DE |
1980 | else if ((operand->flags & DVP_OPERAND_DMA_ADDR) != 0 |
1981 | || (operand->flags & DVP_OPERAND_DMA_NEXT) != 0) | |
1ece1d56 DE |
1982 | { |
1983 | assert (operand->bits == 27 | |
1984 | && operand->shift == 4); | |
1985 | fixP->fx_r_type = BFD_RELOC_MIPS_DVP_27_S4; | |
1986 | } | |
e4d77412 FCE |
1987 | else if ((operand->flags & DVP_OPERAND_RELOC_11_S4) != 0) |
1988 | { | |
1989 | assert (operand->bits == 11 | |
1990 | && operand->shift == 0); | |
1991 | fixP->fx_r_type = BFD_RELOC_MIPS_DVP_11_S4; | |
1992 | /* ??? bfd_install_relocation will duplicate what we've done to | |
1993 | install the addend, so tell it not to. This is an instance | |
1994 | where setting partial_inplace to true has some use. */ | |
1995 | value = 0; | |
1996 | } | |
1997 | else if ((operand->flags & DVP_OPERAND_RELOC_U15_S3) != 0) | |
1998 | { | |
1999 | assert (operand->bits == 15 | |
2000 | && operand->shift == 0); | |
2001 | fixP->fx_r_type = BFD_RELOC_MIPS_DVP_U15_S3; | |
2002 | /* ??? bfd_install_relocation will duplicate what we've done to | |
2003 | install the addend, so tell it not to. This is an instance | |
2004 | where setting partial_inplace to true has some use. */ | |
2005 | value = 0; | |
2006 | } | |
020ba60b DE |
2007 | else |
2008 | { | |
2009 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2010 | "unresolved expression that must be resolved"); | |
2011 | fixP->fx_done = 1; | |
2012 | return 1; | |
2013 | } | |
2014 | } | |
1554baf3 | 2015 | else if (fixP->fx_done) |
020ba60b | 2016 | { |
1554baf3 DE |
2017 | /* We're finished with this fixup. Install it because |
2018 | bfd_install_relocation won't be called to do it. */ | |
020ba60b DE |
2019 | switch (fixP->fx_r_type) |
2020 | { | |
2021 | case BFD_RELOC_8: | |
2022 | md_number_to_chars (where, value, 1); | |
2023 | break; | |
2024 | case BFD_RELOC_16: | |
2025 | md_number_to_chars (where, value, 2); | |
2026 | break; | |
2027 | case BFD_RELOC_32: | |
2028 | md_number_to_chars (where, value, 4); | |
2029 | break; | |
5dccb8b0 DE |
2030 | case BFD_RELOC_64: |
2031 | md_number_to_chars (where, value, 8); | |
2032 | break; | |
020ba60b | 2033 | default: |
8b901ef8 | 2034 | as_fatal ("internal error: unexpected fixup"); |
020ba60b DE |
2035 | } |
2036 | } | |
1554baf3 DE |
2037 | else |
2038 | { | |
2039 | /* bfd_install_relocation will be called to finish things up. */ | |
2040 | } | |
020ba60b | 2041 | |
1554baf3 DE |
2042 | /* Tuck `value' away for use by tc_gen_reloc. |
2043 | See the comment describing fx_addnumber in write.h. */ | |
020ba60b DE |
2044 | fixP->fx_addnumber = value; |
2045 | ||
2046 | return 1; | |
209fb346 DE |
2047 | } |
2048 | ||
2049 | /* Translate internal representation of relocation info to BFD target | |
2050 | format. */ | |
2051 | ||
2052 | arelent * | |
020ba60b | 2053 | tc_gen_reloc (section, fixP) |
209fb346 | 2054 | asection *section; |
020ba60b | 2055 | fixS *fixP; |
209fb346 | 2056 | { |
020ba60b DE |
2057 | arelent *reloc; |
2058 | ||
2059 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
2060 | ||
2061 | reloc->sym_ptr_ptr = &fixP->fx_addsy->bsym; | |
2062 | reloc->address = fixP->fx_frag->fr_address + fixP->fx_where; | |
2063 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
2064 | if (reloc->howto == (reloc_howto_type *) NULL) | |
2065 | { | |
2066 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2067 | "internal error: can't export reloc type %d (`%s')", | |
2068 | fixP->fx_r_type, bfd_get_reloc_code_name (fixP->fx_r_type)); | |
2069 | return NULL; | |
2070 | } | |
2071 | ||
2072 | assert (!fixP->fx_pcrel == !reloc->howto->pc_relative); | |
2073 | ||
2074 | reloc->addend = fixP->fx_addnumber; | |
2075 | ||
2076 | return reloc; | |
209fb346 DE |
2077 | } |
2078 | \f | |
2079 | /* Write a value out to the object file, using the appropriate endianness. */ | |
2080 | ||
2081 | void | |
2082 | md_number_to_chars (buf, val, n) | |
2083 | char *buf; | |
2084 | valueT val; | |
2085 | int n; | |
2086 | { | |
2087 | if (target_big_endian) | |
2088 | number_to_chars_bigendian (buf, val, n); | |
2089 | else | |
2090 | number_to_chars_littleendian (buf, val, n); | |
2091 | } | |
2092 | ||
2093 | /* Turn a string in input_line_pointer into a floating point constant of type | |
2094 | type, and store the appropriate bytes in *litP. The number of LITTLENUMS | |
2095 | emitted is stored in *sizeP . An error message is returned, or NULL on OK. | |
2096 | */ | |
2097 | ||
2098 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
2099 | #define MAX_LITTLENUMS 6 | |
2100 | ||
2101 | char * | |
2102 | md_atof (type, litP, sizeP) | |
2103 | char type; | |
2104 | char *litP; | |
2105 | int *sizeP; | |
2106 | { | |
2107 | int i,prec; | |
2108 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
2109 | LITTLENUM_TYPE *wordP; | |
2110 | char *t; | |
2111 | char *atof_ieee (); | |
2112 | ||
2113 | switch (type) | |
2114 | { | |
2115 | case 'f': | |
2116 | case 'F': | |
2117 | case 's': | |
2118 | case 'S': | |
2119 | prec = 2; | |
2120 | break; | |
2121 | ||
2122 | case 'd': | |
2123 | case 'D': | |
2124 | case 'r': | |
2125 | case 'R': | |
2126 | prec = 4; | |
2127 | break; | |
2128 | ||
2129 | /* FIXME: Some targets allow other format chars for bigger sizes here. */ | |
2130 | ||
2131 | default: | |
2132 | *sizeP = 0; | |
2133 | return "Bad call to md_atof()"; | |
2134 | } | |
2135 | ||
2136 | t = atof_ieee (input_line_pointer, type, words); | |
2137 | if (t) | |
2138 | input_line_pointer = t; | |
2139 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
2140 | ||
2141 | if (target_big_endian) | |
2142 | { | |
2143 | for (i = 0; i < prec; i++) | |
2144 | { | |
2145 | md_number_to_chars (litP, (valueT) words[i], sizeof (LITTLENUM_TYPE)); | |
2146 | litP += sizeof (LITTLENUM_TYPE); | |
2147 | } | |
2148 | } | |
2149 | else | |
2150 | { | |
2151 | for (i = prec - 1; i >= 0; i--) | |
2152 | { | |
2153 | md_number_to_chars (litP, (valueT) words[i], sizeof (LITTLENUM_TYPE)); | |
2154 | litP += sizeof (LITTLENUM_TYPE); | |
2155 | } | |
2156 | } | |
2157 | ||
2158 | return 0; | |
2159 | } | |
020ba60b | 2160 | \f |
91572941 DE |
2161 | /* Miscellaneous utilities. */ |
2162 | ||
19f12fb4 DE |
2163 | /* Parse a 32 bit floating point number. |
2164 | The result is those 32 bits as an integer. */ | |
2165 | ||
2166 | static long | |
2167 | parse_float (pstr, errmsg) | |
2168 | char **pstr; | |
2169 | const char **errmsg; | |
2170 | { | |
e4d77412 FCE |
2171 | if ((*pstr)[0] == '0' |
2172 | && ((*pstr)[1] == 'x' || (*pstr)[1] == 'X')) | |
2173 | { | |
2174 | long value; | |
2175 | (*pstr) += 2; | |
2176 | value = strtol (*pstr, pstr, 16); | |
2177 | return value; | |
2178 | } | |
2179 | else | |
2180 | { | |
2181 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
2182 | *pstr = atof_ieee (*pstr, 'f', words); | |
2183 | return (words[0] << 16) | words[1]; | |
2184 | } | |
19f12fb4 | 2185 | } |
8dddf63f | 2186 | |
91572941 | 2187 | /* Scan a symbol and return a pointer to one past the end. */ |
8dddf63f | 2188 | |
8dddf63f DE |
2189 | #define issymchar(ch) (isalnum(ch) || ch == '_') |
2190 | static char * | |
1ece1d56 | 2191 | scan_symbol (sym) |
8dddf63f DE |
2192 | char *sym; |
2193 | { | |
1ece1d56 DE |
2194 | while (*sym && issymchar (*sym)) |
2195 | ++sym; | |
2196 | return sym; | |
8dddf63f DE |
2197 | } |
2198 | ||
8b901ef8 | 2199 | /* Evaluate an expression for an operand. |
1ece1d56 DE |
2200 | The result is the value of the expression if it can be evaluated, |
2201 | or 0 if it cannot (say because some symbols haven't been defined yet) | |
8151801a DE |
2202 | in which case a fixup is queued. |
2203 | ||
2204 | If OPINDEX is 0, don't queue any fixups, just return 0. */ | |
1ece1d56 DE |
2205 | |
2206 | static long | |
2207 | #ifdef USE_STDARG | |
07b20428 | 2208 | eval_expr (dvp_cpu cpu, int opindex, int offset, const char *fmt, ...) |
1ece1d56 | 2209 | #else |
07b20428 DE |
2210 | eval_expr (cpu, opindex, offset, fmt, va_alist) |
2211 | dvp_cpu cpu; | |
1ece1d56 DE |
2212 | int opindex,offset; |
2213 | const char *fmt; | |
2214 | va_dcl | |
2215 | #endif | |
2216 | { | |
2217 | long value; | |
2218 | va_list ap; | |
2219 | char *str,*save_input; | |
2220 | expressionS exp; | |
2221 | ||
2222 | #ifdef USE_STDARG | |
2223 | va_start (ap, fmt); | |
2224 | #else | |
2225 | va_start (ap); | |
2226 | #endif | |
2227 | vasprintf (&str, fmt, ap); | |
2228 | va_end (ap); | |
2229 | ||
2230 | save_input = input_line_pointer; | |
2231 | input_line_pointer = str; | |
2232 | expression (&exp); | |
2233 | input_line_pointer = save_input; | |
2234 | free (str); | |
2235 | if (exp.X_op == O_constant) | |
2236 | value = exp.X_add_number; | |
2237 | else | |
8dddf63f | 2238 | { |
8151801a DE |
2239 | if (opindex != 0) |
2240 | { | |
07b20428 | 2241 | fixups[fixup_count].cpu = cpu; |
8151801a DE |
2242 | fixups[fixup_count].exp = exp; |
2243 | fixups[fixup_count].opindex = opindex; | |
2244 | fixups[fixup_count].offset = offset; | |
8b901ef8 DE |
2245 | fixups[fixup_count].user_value = -1; |
2246 | fixups[fixup_count].wl = -1; | |
2247 | fixups[fixup_count].cl = -1; | |
8151801a DE |
2248 | ++fixup_count; |
2249 | } | |
1ece1d56 | 2250 | value = 0; |
8dddf63f | 2251 | } |
1ece1d56 DE |
2252 | return value; |
2253 | } | |
8dddf63f | 2254 | |
1ece1d56 | 2255 | /* Create a label named by concatenating PREFIX to NAME. */ |
8dddf63f | 2256 | |
57d0c830 | 2257 | static symbolS * |
1ece1d56 DE |
2258 | create_label (prefix, name) |
2259 | const char *prefix, *name; | |
2260 | { | |
2261 | int namelen = strlen (name); | |
2262 | int prefixlen = strlen (prefix); | |
2263 | char *fullname; | |
57d0c830 | 2264 | symbolS *result; |
1ece1d56 DE |
2265 | |
2266 | fullname = xmalloc (prefixlen + namelen + 1); | |
2267 | strcpy (fullname, prefix); | |
2268 | strcat (fullname, name); | |
2269 | result = symbol_find_or_make (fullname); | |
2270 | free (fullname); | |
2271 | return result; | |
2272 | } | |
8dddf63f | 2273 | |
1ece1d56 | 2274 | /* Create a label named by concatenating PREFIX to NAME, |
b6d331b9 DE |
2275 | and define it as `.'. |
2276 | STO, if non-zero, is the st_other value to assign to this label. | |
3b4389e2 | 2277 | If STO is zero `cur_cpu', call force_mach_label to force record_mach to |
b6d331b9 | 2278 | emit a cpu label. Otherwise the disassembler gets confused. */ |
8dddf63f | 2279 | |
57d0c830 | 2280 | static symbolS * |
b6d331b9 DE |
2281 | create_colon_label (sto, prefix, name) |
2282 | int sto; | |
1ece1d56 DE |
2283 | const char *prefix, *name; |
2284 | { | |
2285 | int namelen = strlen (name); | |
2286 | int prefixlen = strlen (prefix); | |
2287 | char *fullname; | |
57d0c830 | 2288 | symbolS *result; |
1ece1d56 DE |
2289 | |
2290 | fullname = xmalloc (prefixlen + namelen + 1); | |
2291 | strcpy (fullname, prefix); | |
2292 | strcat (fullname, name); | |
2293 | result = colon (fullname); | |
b6d331b9 DE |
2294 | if (sto) |
2295 | S_SET_OTHER (result, sto); | |
2296 | else | |
3b4389e2 | 2297 | force_mach_label (); |
1ece1d56 DE |
2298 | free (fullname); |
2299 | return result; | |
8dddf63f | 2300 | } |
91572941 | 2301 | |
57d0c830 DE |
2302 | /* Return a malloc'd string useful in creating unique labels. |
2303 | PREFIX is the prefix to use or NULL if we're to pick one. */ | |
91572941 DE |
2304 | |
2305 | static char * | |
57d0c830 DE |
2306 | unique_name (prefix) |
2307 | const char *prefix; | |
91572941 DE |
2308 | { |
2309 | static int counter; | |
2310 | char *result; | |
2311 | ||
57d0c830 | 2312 | if (prefix == NULL) |
9152beba | 2313 | prefix = UNIQUE_LABEL_PREFIX; |
57d0c830 | 2314 | asprintf (&result, "%s%d", prefix, counter); |
91572941 DE |
2315 | ++counter; |
2316 | return result; | |
2317 | } | |
1554baf3 DE |
2318 | \f |
2319 | /* VU support. */ | |
2320 | ||
2321 | /* Return the name of the overlay section. | |
2322 | It must be unique among all overlays in the executable. */ | |
2323 | ||
2324 | static char * | |
2325 | vuoverlay_section_name (addr) | |
5dccb8b0 | 2326 | symbolS *addr; |
1554baf3 DE |
2327 | { |
2328 | char *section_name; | |
2329 | char *file; | |
2330 | unsigned int lineno; | |
2331 | unsigned int fileno; | |
2332 | /* One mpg may actually result in several, counter keeps track of this. */ | |
2333 | static int counter; | |
2334 | ||
2335 | as_where (&file, &lineno); | |
2336 | for (fileno = 0; *file; ++file) | |
2337 | fileno = (fileno << 1) + *file; | |
5dccb8b0 | 2338 | if (addr->sy_value.X_op == O_constant) |
c3b51879 | 2339 | asprintf (§ion_name, "%s.0x%x.%u.%u.%d", SHNAME_DVP_OVERLAY_PREFIX, |
5dccb8b0 DE |
2340 | (int) S_GET_VALUE (addr), fileno, lineno, counter); |
2341 | else | |
c3b51879 | 2342 | asprintf (§ion_name, "%s.unknvma.%u.%u.%d", SHNAME_DVP_OVERLAY_PREFIX, |
5dccb8b0 | 2343 | fileno, lineno, counter); |
1554baf3 DE |
2344 | ++counter; |
2345 | return section_name; | |
2346 | } | |
2347 | ||
2348 | /* Create a shadow section for VU code that starts at ADDR in vu space. | |
2349 | START_LABEL and END_LABEL, if non-NULL, are symbols marking the start and | |
2350 | end of the section. If NULL, no overlay tracking information is output. */ | |
2351 | ||
2352 | static void | |
2353 | create_vuoverlay_section (section_name, addr, start_label, end_label) | |
2354 | const char *section_name; | |
5dccb8b0 DE |
2355 | /* Remember, expressions are recorded as symbols. */ |
2356 | symbolS *addr; | |
1554baf3 DE |
2357 | symbolS *start_label, *end_label; |
2358 | { | |
2359 | /* Must preserve the current seg/subseg. */ | |
2360 | segT orig_seg = now_seg; | |
2361 | subsegT orig_subseg = now_subseg; | |
2362 | ||
c3b51879 | 2363 | /* Create and get handle of a vu overlay section. All vu symbols go here. |
1554baf3 DE |
2364 | The section name must be unique in the entire executable. |
2365 | We achieve this by encoding the source file name and file number. Ick. | |
2366 | ??? A cleaner way would be if mpg took a new argument that named the | |
2367 | overlay. */ | |
2368 | vuoverlay_section = subseg_new (section_name, 0); | |
7a701825 | 2369 | bfd_set_section_flags (stdoutput, vuoverlay_section, SEC_CODE); |
1554baf3 DE |
2370 | /* There's no point in setting the section vma as we can't get the linker |
2371 | to preserve it. But what the heck ... It might be useful to the | |
2372 | objdump user. */ | |
79259a91 DE |
2373 | #if 0 /* FIXME: bfd's elf.c:swap_out_syms always emits symbol values with |
2374 | the section vma added in so we can't do this. */ | |
5dccb8b0 DE |
2375 | if (addr->sy_value.X_op == O_constant) |
2376 | bfd_set_section_vma (stdoutput, vuoverlay_section, S_GET_VALUE (addr)); | |
79259a91 | 2377 | #endif |
1554baf3 DE |
2378 | /* The size of the section won't be known until we see the .endmpg, |
2379 | but we can compute it from the start and end labels. */ | |
2380 | /* FIXME: This causes the section to occupy space in the file. */ | |
2381 | if (start_label) | |
2382 | frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
2383 | expr_build_binary (O_subtract, end_label, start_label), | |
2384 | (offsetT) 0, (char *) 0); | |
2385 | #if 0 | |
2386 | /* Create a symbol marking the start of the section. */ | |
2387 | begin_label = create_colon_label (STO_DVP_VU, "__start_", section_name); | |
2388 | #endif | |
2389 | ||
c371a664 | 2390 | #if 0 /* already done */ |
1554baf3 DE |
2391 | /* Initialize $.mpgloc. */ |
2392 | mpgloc_sym = expr_build_uconstant (addr); | |
c371a664 | 2393 | #endif |
1554baf3 DE |
2394 | |
2395 | #if 0 /* $.mpgloc is kept in the ABS section. */ | |
2396 | S_SET_SEGMENT (mpgloc_sym, vuoverlay_section); | |
2397 | #endif | |
2398 | ||
2399 | /* Add an entry to the vu overlay table. */ | |
2400 | if (start_label) | |
2401 | { | |
1554baf3 | 2402 | expressionS exp; |
c3b51879 DE |
2403 | const char *p; |
2404 | symbolS * name_label; | |
2405 | ||
2406 | /* Put the section name in the overlay string table. */ | |
2407 | ||
2408 | subseg_set (vuoverlay_string_section, 0); | |
2409 | name_label = create_colon_label (0, LOCAL_LABEL_PREFIX, | |
2410 | unique_name ("secstr")); | |
2411 | /* FIXME: should be a utility to do this. */ | |
2412 | for (p = section_name; *p; ++p) | |
2413 | FRAG_APPEND_1_CHAR (*p); | |
2414 | FRAG_APPEND_1_CHAR (0); | |
1554baf3 DE |
2415 | |
2416 | subseg_set (vuoverlay_table_section, 0); | |
2417 | ||
c3b51879 DE |
2418 | /* FIXME: should be a utility to do these. */ |
2419 | /* Offset into string table. */ | |
2420 | exp.X_op = O_symbol; | |
2421 | exp.X_add_symbol = name_label; | |
2422 | exp.X_add_number = 0; | |
7f7d7bc0 | 2423 | emit_expr (&exp, 4); |
c3b51879 | 2424 | |
1554baf3 DE |
2425 | /* The section's lma. */ |
2426 | exp.X_op = O_symbol; | |
2427 | exp.X_add_symbol = start_label; | |
2428 | exp.X_add_number = 0; | |
7f7d7bc0 | 2429 | emit_expr (&exp, 4); |
1554baf3 DE |
2430 | |
2431 | /* The section's vma. */ | |
5dccb8b0 DE |
2432 | exp.X_op = O_symbol; |
2433 | exp.X_add_symbol = addr; | |
2434 | exp.X_add_number = 0; | |
7f7d7bc0 | 2435 | emit_expr (&exp, 4); |
1554baf3 DE |
2436 | } |
2437 | ||
2438 | /* Restore the original seg/subseg. */ | |
2439 | subseg_set (orig_seg, orig_subseg); | |
2440 | } | |
07b20428 DE |
2441 | |
2442 | /* Compute a value for $.mpgloc given a symbol at the start of a chunk | |
2443 | of code, the $.mpgloc value for the start, and a symbol at the end | |
2444 | of the chunk of code. */ | |
2445 | ||
2446 | static symbolS * | |
2447 | compute_mpgloc (startloc, startsym, endsym) | |
2448 | symbolS * startloc; | |
2449 | symbolS * startsym; | |
2450 | symbolS * endsym; | |
2451 | { | |
2452 | symbolS *s; | |
2453 | ||
2454 | s = expr_build_binary (O_subtract, endsym, startsym); | |
2455 | s = expr_build_binary (O_add, startloc, s); | |
2456 | return s; | |
2457 | } | |
8b901ef8 | 2458 | \f |
fa3671a3 DE |
2459 | /* Compute a value for nloop. */ |
2460 | ||
2461 | static int | |
2462 | compute_nloop (type, nregs, bytes) | |
2463 | gif_type type; | |
2464 | int nregs, bytes; | |
2465 | { | |
2466 | int computed_nloop; | |
2467 | ||
2468 | switch (type) | |
2469 | { | |
2470 | case GIF_PACKED : | |
2471 | /* We can't compute a value if no regs were specified and there is a | |
2472 | non-zero amount of data. Just set to something useful, a warning | |
2473 | will be issued later. */ | |
2474 | if (nregs == 0) | |
2475 | nregs = 1; | |
2476 | computed_nloop = (bytes >> 4) / nregs; | |
2477 | break; | |
2478 | case GIF_REGLIST : | |
2479 | if (nregs == 0) | |
2480 | nregs = 1; | |
2481 | computed_nloop = (bytes >> 3) / nregs; | |
2482 | break; | |
2483 | case GIF_IMAGE : | |
2484 | computed_nloop = bytes >> 4; | |
2485 | break; | |
2486 | } | |
2487 | ||
2488 | return computed_nloop; | |
2489 | } | |
2490 | ||
2491 | /* Issue a warning if the user specified nloop value doesn't match the | |
2492 | computed value. */ | |
2493 | ||
2494 | static void | |
2495 | check_nloop (type, nregs, user_nloop, computed_nloop, file, line) | |
2496 | gif_type type; | |
2497 | int nregs,user_nloop,computed_nloop; | |
2498 | char *file; | |
2499 | unsigned int line; | |
2500 | { | |
2501 | if (user_nloop != computed_nloop) | |
2502 | as_warn_where (file, line, "nloop value does not match amount of data"); | |
2503 | } | |
91572941 | 2504 | \f |
e9cb12e4 DE |
2505 | /* Compute the auto-count value for a DMA tag. |
2506 | INLINE_P is non-zero if the dma data is inline. */ | |
91572941 DE |
2507 | |
2508 | static void | |
e9cb12e4 | 2509 | setup_dma_autocount (name, insn_buf, inline_p) |
91572941 DE |
2510 | const char *name; |
2511 | DVP_INSN *insn_buf; | |
e9cb12e4 | 2512 | int inline_p; |
91572941 DE |
2513 | { |
2514 | long count; | |
2515 | ||
e9cb12e4 DE |
2516 | if (inline_p) |
2517 | { | |
2518 | /* -1: The count is the number of following quadwords, so skip the one | |
2519 | containing the dma tag. */ | |
07b20428 | 2520 | count = eval_expr (DVP_DMA, dma_operand_count, 0, |
e9cb12e4 DE |
2521 | "((%s%s - %s) >> 4) - 1", END_LABEL_PREFIX, name, name); |
2522 | } | |
2523 | else | |
2524 | { | |
2525 | /* We don't want to subtract 1 here as the begin and end labels | |
2526 | properly surround the data we want to compute the length of. */ | |
07b20428 | 2527 | count = eval_expr (DVP_DMA, dma_operand_count, 0, |
e9cb12e4 DE |
2528 | "(%s%s - %s) >> 4", END_LABEL_PREFIX, name, name); |
2529 | } | |
91572941 DE |
2530 | |
2531 | /* Store the count field. */ | |
e9cb12e4 DE |
2532 | insn_buf[0] &= 0xffff0000; |
2533 | insn_buf[0] |= count & 0x0000ffff; | |
91572941 DE |
2534 | } |
2535 | ||
2536 | /* Record that inline data follows. */ | |
2537 | ||
2538 | static void | |
8151801a | 2539 | inline_dma_data (autocount_p, insn_buf) |
91572941 DE |
2540 | int autocount_p; |
2541 | DVP_INSN *insn_buf; | |
2542 | { | |
8151801a | 2543 | if (dma_data_state != 0 ) |
91572941 DE |
2544 | { |
2545 | as_bad ("DmaData blocks cannot be nested."); | |
2546 | return; | |
2547 | } | |
2548 | ||
8151801a | 2549 | dma_data_state = 1; |
91572941 DE |
2550 | |
2551 | if (autocount_p) | |
2552 | { | |
b6d331b9 | 2553 | dma_data_name = S_GET_NAME (create_colon_label (0, "", unique_name (NULL))); |
e9cb12e4 | 2554 | setup_dma_autocount (dma_data_name, insn_buf, 1); |
91572941 DE |
2555 | } |
2556 | else | |
8151801a | 2557 | dma_data_name = 0; |
91572941 DE |
2558 | } |
2559 | ||
2560 | /* Compute the auto-count value for a DMA tag with out-of-line data. */ | |
2561 | ||
2562 | static long | |
2563 | parse_dma_addr_autocount (opcode, operand, mods, insn_buf, pstr, errmsg) | |
2564 | const dvp_opcode *opcode; | |
2565 | const dvp_operand *operand; | |
2566 | int mods; | |
2567 | DVP_INSN *insn_buf; | |
2568 | char **pstr; | |
2569 | const char **errmsg; | |
2570 | { | |
2571 | char *start = *pstr; | |
2572 | char *end = start; | |
2573 | long retval; | |
2574 | /* Data reference must be a .DmaData label. */ | |
57d0c830 | 2575 | symbolS *label, *label2, *endlabel; |
91572941 DE |
2576 | const char *name; |
2577 | char c; | |
2578 | ||
2579 | label = label2 = 0; | |
2580 | if (! is_name_beginner (*start)) | |
2581 | { | |
2582 | *errmsg = "invalid .DmaData label"; | |
2583 | return 0; | |
2584 | } | |
2585 | ||
2586 | name = start; | |
2587 | end = scan_symbol (name); | |
2588 | c = *end; | |
2589 | *end = 0; | |
2590 | label = symbol_find_or_make (name); | |
2591 | *end = c; | |
2592 | ||
7a701825 DE |
2593 | /* Use the same prefix as vu labels here. */ |
2594 | label2 = create_label (VU_LABEL_PREFIX, name); | |
91572941 DE |
2595 | endlabel = create_label (END_LABEL_PREFIX, name); |
2596 | ||
07b20428 | 2597 | retval = eval_expr (DVP_DMA, dma_operand_addr, 4, name); |
91572941 | 2598 | |
e9cb12e4 | 2599 | setup_dma_autocount (name, insn_buf, 0); |
91572941 DE |
2600 | |
2601 | *pstr = end; | |
2602 | return retval; | |
2603 | } | |
8dddf63f | 2604 | \f |
a6756468 DE |
2605 | /* Compute the type of vif insn of IBYTE. |
2606 | IBYTE is the msb of the insn. | |
2607 | This is only used for mpg,direct,unpack insns. | |
2608 | The result is one of VIF_OPCODE_{DIRECT,DIRECTHL,MPG,UNPACK}. */ | |
2609 | ||
2610 | static int | |
2611 | vif_insn_type (ibyte) | |
2612 | char ibyte; | |
2613 | { | |
2614 | switch (ibyte & 0x70) | |
2615 | { | |
2616 | case 0x50 : | |
2617 | return (ibyte & 1) ? VIF_OPCODE_DIRECTHL : VIF_OPCODE_DIRECT; | |
2618 | case 0x40 : | |
2619 | return VIF_OPCODE_MPG; | |
2620 | case 0x60 : | |
2621 | case 0x70 : | |
2622 | return VIF_OPCODE_UNPACK; | |
2623 | default : | |
2624 | as_fatal ("internal error: bad call to vif_insn_type"); | |
2625 | } | |
2626 | } | |
2627 | ||
8b901ef8 | 2628 | /* Return the length value to insert in a VIF instruction whose upper |
a6756468 | 2629 | byte is IBYTE and whose data length is BYTES. |
8b901ef8 DE |
2630 | WL,CL are used for unpack insns and are the stcycl values in effect. |
2631 | This does not do the max -> 0 conversion. */ | |
e1b747c4 DE |
2632 | |
2633 | static int | |
a6756468 DE |
2634 | vif_length_value (ibyte, wl, cl, bytes) |
2635 | char ibyte; | |
8b901ef8 DE |
2636 | int wl,cl; |
2637 | int bytes; | |
e1b747c4 | 2638 | { |
a6756468 | 2639 | switch (ibyte & 0x70) |
e1b747c4 | 2640 | { |
8b901ef8 DE |
2641 | case 0x50 : /* direct */ |
2642 | /* ??? Worry about data /= 16 cuts off? */ | |
2643 | return bytes / 16; | |
2644 | case 0x40 : /* mpg */ | |
2645 | /* ??? Worry about data /= 8 cuts off? */ | |
2646 | return bytes / 8; | |
2647 | case 0x60 : /* unpack */ | |
2648 | case 0x70 : | |
a6756468 | 2649 | return vif_unpack_len_value (ibyte & 15, wl, cl, bytes); |
8b901ef8 DE |
2650 | default : |
2651 | as_fatal ("internal error: bad call to vif_length_value"); | |
e1b747c4 | 2652 | } |
e1b747c4 DE |
2653 | } |
2654 | ||
8b901ef8 DE |
2655 | /* Install length LEN in the vif insn at BUF. |
2656 | LEN is the actual value to store, except that the max->0 conversion | |
2657 | hasn't been done (we do it). | |
e033023f DE |
2658 | The bytes in BUF are in target order. */ |
2659 | ||
2660 | static void | |
b4cbabb8 | 2661 | install_vif_length (buf, len) |
e033023f DE |
2662 | char *buf; |
2663 | int len; | |
2664 | { | |
a6756468 | 2665 | unsigned char ibyte = buf[3]; |
e033023f | 2666 | |
a6756468 | 2667 | if ((ibyte & 0x70) == 0x40) |
e033023f DE |
2668 | { |
2669 | /* mpg */ | |
e033023f | 2670 | if (len > 256) |
d476d46a DE |
2671 | as_bad ("`mpg' data length must be between 1 and 256"); |
2672 | buf[2] = len == 256 ? 0 : len; | |
e033023f | 2673 | } |
a6756468 | 2674 | else if ((ibyte & 0x70) == 0x50) |
e033023f DE |
2675 | { |
2676 | /* direct/directhl */ | |
d476d46a DE |
2677 | if (len > 65536) |
2678 | as_bad ("`direct' data length must be between 1 and 65536"); | |
2679 | len = len == 65536 ? 0 : len; | |
2680 | buf[0] = len; | |
2681 | buf[1] = len >> 8; | |
e033023f | 2682 | } |
a6756468 | 2683 | else if ((ibyte & 0x60) == 0x60) |
e033023f DE |
2684 | { |
2685 | /* unpack */ | |
8b901ef8 | 2686 | /* len == -1 means wl,cl are unknown and thus we can't compute |
65309b98 DE |
2687 | a useful value */ |
2688 | if (len == -1) | |
2689 | { | |
2690 | as_bad ("missing `stcycle', can't compute length of `unpack' insn"); | |
2691 | len = 1; | |
2692 | } | |
a9589a2c DE |
2693 | if (len < 0 || len > 256) |
2694 | as_bad ("`unpack' data length must be between 0 and 256"); | |
2695 | /* 256 is recorded as 0 in the insn */ | |
57d0c830 DE |
2696 | len = len == 256 ? 0 : len; |
2697 | buf[2] = len; | |
e033023f DE |
2698 | } |
2699 | else | |
8b901ef8 | 2700 | as_fatal ("internal error: bad call to install_vif_length"); |
e033023f DE |
2701 | } |
2702 | ||
8b901ef8 DE |
2703 | /* Finish off the current set of mpg insns, and start a new set. |
2704 | The IGNORE arg exists because insert_unpack_marker uses it and both | |
2705 | of these functions are passed to insert_file. */ | |
ba4be194 DE |
2706 | |
2707 | static void | |
8b901ef8 DE |
2708 | insert_mpg_marker (ignore) |
2709 | unsigned long ignore; | |
ba4be194 | 2710 | { |
8b901ef8 DE |
2711 | s_endmpg (ENDMPG_MIDDLE); |
2712 | /* mpgloc is updated by s_endmpg. */ | |
ba4be194 DE |
2713 | md_assemble ("mpg *,*"); |
2714 | /* Record the cpu type in case we're in the middle of reading binary | |
2715 | data. */ | |
2716 | record_mach (DVP_VUUP, 0); | |
2717 | } | |
2718 | ||
8b901ef8 DE |
2719 | /* Finish off the current unpack insn and start a new one. |
2720 | INSN0 is the first word of the insn and is used to figure out what | |
2721 | kind of unpack insn it is. */ | |
2722 | ||
2723 | static void | |
2724 | insert_unpack_marker (insn0) | |
2725 | unsigned long insn0; | |
2726 | { | |
2727 | } | |
2728 | ||
e033023f | 2729 | /* Insert a file into the output. |
ba4be194 | 2730 | The -I arg passed to GAS is used to specify where to find the file. |
8b901ef8 DE |
2731 | INSERT_MARKER if non-NULL is called every SIZE bytes with an argument of |
2732 | INSERT_MARKER_ARG. This is used by the mpg insn to insert mpg's every 256 | |
2733 | insns and by the unpack insn. | |
e033023f DE |
2734 | The result is the number of bytes inserted. |
2735 | If an error occurs an error message is printed and zero is returned. */ | |
2736 | ||
2737 | static int | |
8b901ef8 | 2738 | insert_file (file, insert_marker, insert_marker_arg, size) |
e033023f | 2739 | const char *file; |
8b901ef8 DE |
2740 | void (*insert_marker) PARAMS ((unsigned long)); |
2741 | unsigned long insert_marker_arg; | |
ba4be194 | 2742 | int size; |
e033023f DE |
2743 | { |
2744 | FILE *f; | |
2745 | char buf[256]; | |
ba4be194 | 2746 | int i, n, total, left_before_marker; |
fe9efeb6 | 2747 | char *path; |
e033023f | 2748 | |
fe9efeb6 DE |
2749 | path = xmalloc (strlen (file) + include_dir_maxlen + 5 /*slop*/); |
2750 | f = NULL; | |
2751 | for (i = 0; i < include_dir_count; i++) | |
2752 | { | |
2753 | strcpy (path, include_dirs[i]); | |
2754 | strcat (path, "/"); | |
2755 | strcat (path, file); | |
2756 | if ((f = fopen (path, FOPEN_RB)) != NULL) | |
2757 | break; | |
2758 | } | |
2759 | free (path); | |
2760 | if (f == NULL) | |
2761 | f = fopen (file, FOPEN_RB); | |
e033023f DE |
2762 | if (f == NULL) |
2763 | { | |
2764 | as_bad ("unable to read file `%s'", file); | |
2765 | return 0; | |
2766 | } | |
2767 | ||
2768 | total = 0; | |
ba4be194 | 2769 | left_before_marker = 0; |
e033023f | 2770 | do { |
ba4be194 DE |
2771 | int bytes; |
2772 | if (insert_marker) | |
2773 | bytes = MIN (size - left_before_marker, sizeof (buf)); | |
2774 | else | |
2775 | bytes = sizeof (buf); | |
2776 | n = fread (buf, 1, bytes, f); | |
e033023f DE |
2777 | if (n > 0) |
2778 | { | |
2779 | char *fr = frag_more (n); | |
2780 | memcpy (fr, buf, n); | |
2781 | total += n; | |
ba4be194 DE |
2782 | if (insert_marker) |
2783 | { | |
2784 | left_before_marker += n; | |
2785 | if (left_before_marker > size) | |
8b901ef8 | 2786 | as_fatal ("internal error: file insertion sanity checky failed"); |
ba4be194 DE |
2787 | if (left_before_marker == size) |
2788 | { | |
8b901ef8 | 2789 | (*insert_marker) (insert_marker_arg); |
ba4be194 DE |
2790 | left_before_marker = 0; |
2791 | } | |
2792 | } | |
e033023f DE |
2793 | } |
2794 | } while (n > 0); | |
2795 | ||
2796 | fclose (f); | |
fe9efeb6 | 2797 | /* We assume the file is smaller than 2^31 bytes. |
ba4be194 | 2798 | Ok, we shouldn't make any assumptions. */ |
e033023f DE |
2799 | return total; |
2800 | } | |
2801 | ||
020ba60b DE |
2802 | /* Insert an operand value into an instruction. */ |
2803 | ||
6856244d DE |
2804 | static void |
2805 | insert_operand (cpu, opcode, operand, mods, insn_buf, val, errmsg) | |
3a6b8910 | 2806 | dvp_cpu cpu; |
6856244d | 2807 | const dvp_opcode *opcode; |
276dd6ef | 2808 | const dvp_operand *operand; |
020ba60b | 2809 | int mods; |
6856244d DE |
2810 | DVP_INSN *insn_buf; |
2811 | offsetT val; | |
2812 | const char **errmsg; | |
2813 | { | |
2814 | if (operand->insert) | |
2815 | { | |
2816 | (*operand->insert) (opcode, operand, mods, insn_buf, (long) val, errmsg); | |
2817 | } | |
2818 | else | |
2819 | { | |
b4cbabb8 DE |
2820 | /* We currently assume a field does not cross a word boundary. */ |
2821 | int shift = ((mods & DVP_MOD_THIS_WORD) | |
2822 | ? (operand->shift & 31) | |
2823 | : operand->shift); | |
8151801a DE |
2824 | /* FIXME: revisit */ |
2825 | if (operand->word == 0) | |
b4cbabb8 | 2826 | { |
8151801a DE |
2827 | int word = (mods & DVP_MOD_THIS_WORD) ? 0 : (shift / 32); |
2828 | if (operand->bits == 32) | |
2829 | insn_buf[word] = val; | |
2830 | else | |
2831 | { | |
2832 | shift = shift % 32; | |
2833 | insn_buf[word] |= ((long) val & ((1 << operand->bits) - 1)) << shift; | |
2834 | } | |
b4cbabb8 | 2835 | } |
6856244d DE |
2836 | else |
2837 | { | |
8151801a DE |
2838 | int word = (mods & DVP_MOD_THIS_WORD) ? 0 : operand->word; |
2839 | if (operand->bits == 32) | |
2840 | insn_buf[word] = val; | |
2841 | else | |
2842 | { | |
2843 | long temp = (long) val & ((1 << operand->bits) - 1); | |
2844 | insn_buf[word] |= temp << operand->shift; | |
2845 | } | |
6856244d DE |
2846 | } |
2847 | } | |
2848 | } | |
2849 | ||
2850 | /* Insert an operand's final value into an instruction. | |
2851 | Here we can give warning messages about operand values if we want to. */ | |
2852 | ||
2853 | static void | |
2854 | insert_operand_final (cpu, operand, mods, insn_buf, val, file, line) | |
2855 | dvp_cpu cpu; | |
2856 | const dvp_operand *operand; | |
2857 | int mods; | |
2858 | DVP_INSN *insn_buf; | |
020ba60b DE |
2859 | offsetT val; |
2860 | char *file; | |
2861 | unsigned int line; | |
2862 | { | |
2863 | if (operand->bits != 32) | |
2864 | { | |
b6675c1a | 2865 | offsetT min, max, test; |
020ba60b | 2866 | |
07b20428 | 2867 | /* ??? This test belongs more properly in the insert handler. */ |
276dd6ef | 2868 | if ((operand->flags & DVP_OPERAND_RELATIVE_BRANCH) != 0) |
020ba60b DE |
2869 | { |
2870 | if ((val & 7) != 0) | |
2871 | { | |
2872 | if (file == (char *) NULL) | |
2873 | as_warn ("branch to misaligned address"); | |
2874 | else | |
2875 | as_warn_where (file, line, "branch to misaligned address"); | |
2876 | } | |
2877 | val >>= 3; | |
2878 | } | |
07b20428 DE |
2879 | /* ??? This test belongs more properly in the insert handler. */ |
2880 | else if ((operand->flags & DVP_OPERAND_VU_ADDRESS) != 0) | |
2881 | { | |
2882 | if ((val & 7) != 0) | |
2883 | { | |
2884 | if (file == (char *) NULL) | |
2885 | as_warn ("misaligned vu address"); | |
2886 | else | |
2887 | as_warn_where (file, line, "misaligned vu address"); | |
2888 | } | |
2889 | val >>= 3; | |
2890 | } | |
020ba60b | 2891 | |
276dd6ef | 2892 | if ((operand->flags & DVP_OPERAND_SIGNED) != 0) |
020ba60b | 2893 | { |
276dd6ef | 2894 | if ((operand->flags & DVP_OPERAND_SIGNOPT) != 0) |
020ba60b DE |
2895 | max = (1 << operand->bits) - 1; |
2896 | else | |
2897 | max = (1 << (operand->bits - 1)) - 1; | |
2898 | min = - (1 << (operand->bits - 1)); | |
2899 | } | |
2900 | else | |
2901 | { | |
2902 | max = (1 << operand->bits) - 1; | |
2903 | min = 0; | |
2904 | } | |
2905 | ||
276dd6ef | 2906 | if ((operand->flags & DVP_OPERAND_NEGATIVE) != 0) |
020ba60b DE |
2907 | test = - val; |
2908 | else | |
2909 | test = val; | |
2910 | ||
2911 | if (test < (offsetT) min || test > (offsetT) max) | |
2912 | { | |
2913 | const char *err = | |
2914 | "operand out of range (%s not between %ld and %ld)"; | |
2915 | char buf[100]; | |
2916 | ||
2917 | sprint_value (buf, test); | |
2918 | if (file == (char *) NULL) | |
2919 | as_warn (err, buf, min, max); | |
2920 | else | |
2921 | as_warn_where (file, line, err, buf, min, max); | |
2922 | } | |
2923 | } | |
2924 | ||
6856244d DE |
2925 | { |
2926 | const char *errmsg = NULL; | |
2927 | insert_operand (cpu, NULL, operand, mods, insn_buf, val, &errmsg); | |
2928 | if (errmsg != NULL) | |
2929 | as_warn_where (file, line, errmsg); | |
2930 | } | |
020ba60b | 2931 | } |
b5d20cf6 | 2932 | \f |
91572941 | 2933 | /* DVP pseudo ops. */ |
3b2215c2 JL |
2934 | |
2935 | static void | |
1ece1d56 | 2936 | s_dmadata (ignore) |
3b2215c2 JL |
2937 | int ignore; |
2938 | { | |
1ece1d56 | 2939 | char *name, c; |
63589bf4 | 2940 | |
8151801a | 2941 | dma_data_name = 0; |
3b2215c2 | 2942 | |
8151801a | 2943 | if (dma_data_state != 0) |
4411d964 | 2944 | { |
1ece1d56 DE |
2945 | as_bad ("DmaData blocks cannot be nested."); |
2946 | ignore_rest_of_line (); | |
2947 | return; | |
3b2215c2 | 2948 | } |
8151801a | 2949 | dma_data_state = 1; |
4411d964 | 2950 | |
1ece1d56 DE |
2951 | SKIP_WHITESPACE (); /* Leading whitespace is part of operand. */ |
2952 | name = input_line_pointer; | |
4411d964 | 2953 | |
1ece1d56 | 2954 | if (!is_name_beginner (*name)) |
3b2215c2 | 2955 | { |
1ece1d56 DE |
2956 | as_bad ("invalid identifier for \".DmaData\""); |
2957 | ignore_rest_of_line (); | |
2958 | return; | |
3b2215c2 | 2959 | } |
b5d20cf6 | 2960 | |
e7201c9e DE |
2961 | /* Do an implicit alignment to a 16 byte boundary. */ |
2962 | frag_align (4, 0, 0); | |
2963 | record_alignment (now_seg, 4); | |
2964 | ||
1ece1d56 DE |
2965 | c = get_symbol_end (); |
2966 | line_label = colon (name); /* user-defined label */ | |
8151801a | 2967 | dma_data_name = S_GET_NAME (line_label); |
1ece1d56 | 2968 | *input_line_pointer = c; |
63589bf4 | 2969 | |
3b4389e2 DE |
2970 | /* Force emission of a machine type label for the next insn. */ |
2971 | force_mach_label (); | |
2972 | ||
1ece1d56 | 2973 | demand_empty_rest_of_line (); |
3b2215c2 | 2974 | } |
b5d20cf6 | 2975 | |
3b2215c2 | 2976 | static void |
1ece1d56 | 2977 | s_enddmadata (ignore) |
3b2215c2 JL |
2978 | int ignore; |
2979 | { | |
8151801a | 2980 | if (dma_data_state != 1) |
3b2215c2 | 2981 | { |
1ece1d56 DE |
2982 | as_warn (".EndDmaData encountered outside a DmaData block -- ignored."); |
2983 | ignore_rest_of_line (); | |
8151801a | 2984 | dma_data_name = 0; |
3b2215c2 | 2985 | } |
8151801a | 2986 | dma_data_state = 0; |
1ece1d56 DE |
2987 | demand_empty_rest_of_line (); |
2988 | ||
e9cb12e4 DE |
2989 | /* If count provided, verify it is correct. */ |
2990 | /* ... */ | |
2991 | ||
89036011 DE |
2992 | /* Fill the data out to a multiple of 16 bytes. */ |
2993 | /* FIXME: Are the fill contents right? */ | |
2994 | frag_align (4, 0, 0); | |
2995 | ||
1ece1d56 DE |
2996 | /* "label" points to beginning of block. |
2997 | Create a name for the final label like _$<name>. */ | |
8151801a | 2998 | if (dma_data_name) |
89036011 | 2999 | create_colon_label (0, END_LABEL_PREFIX, dma_data_name); |
b5d20cf6 | 3000 | } |
91572941 | 3001 | |
b5d20cf6 | 3002 | static void |
1ece1d56 | 3003 | s_dmapackvif (ignore) |
4411d964 | 3004 | int ignore; |
b5d20cf6 | 3005 | { |
1ece1d56 | 3006 | /* Syntax: .dmapackvif 0|1 */ |
63589bf4 | 3007 | |
1ece1d56 DE |
3008 | /* Leading whitespace is part of operand. */ |
3009 | SKIP_WHITESPACE (); | |
3010 | switch (*input_line_pointer++) | |
63589bf4 | 3011 | { |
3b2215c2 | 3012 | case '0': |
1ece1d56 DE |
3013 | dma_pack_vif_p = 0; |
3014 | break; | |
3b2215c2 | 3015 | case '1': |
1ece1d56 DE |
3016 | dma_pack_vif_p = 1; |
3017 | break; | |
63589bf4 | 3018 | default: |
7f28a81d | 3019 | as_bad ("illegal argument to `.dmapackvif'"); |
63589bf4 | 3020 | } |
1ece1d56 | 3021 | demand_empty_rest_of_line (); |
b5d20cf6 DE |
3022 | } |
3023 | ||
ba4be194 DE |
3024 | /* INTERNAL_P is non-zero if invoked internally by this file rather than |
3025 | by the user. In this case we don't touch the input stream. */ | |
3026 | ||
b5d20cf6 | 3027 | static void |
ba4be194 DE |
3028 | s_enddirect (internal_p) |
3029 | int internal_p; | |
b5d20cf6 | 3030 | { |
498fcb9c | 3031 | if (CUR_ASM_STATE != ASM_DIRECT) |
e1b747c4 DE |
3032 | { |
3033 | as_bad ("`.enddirect' has no matching `direct' instruction"); | |
3034 | return; | |
3035 | } | |
3036 | ||
8b901ef8 DE |
3037 | /* Record in the end data symbol the current location. */ |
3038 | if (now_seg != S_GET_SEGMENT (vif_data_end)) | |
3039 | as_bad (".enddirect in different section"); | |
3040 | vif_data_end->sy_frag = frag_now; | |
3041 | S_SET_VALUE (vif_data_end, (valueT) frag_now_fix ()); | |
e1b747c4 | 3042 | |
e4d77412 | 3043 | pop_asm_state (1); |
498fcb9c | 3044 | |
8b901ef8 DE |
3045 | /* Needn't be reset, but to catch bugs it is. */ |
3046 | vif_data_end = NULL; | |
498fcb9c | 3047 | |
ba4be194 DE |
3048 | if (! internal_p) |
3049 | demand_empty_rest_of_line (); | |
498fcb9c DE |
3050 | } |
3051 | ||
8b901ef8 DE |
3052 | /* CALLER denotes who's calling us. |
3053 | If ENDMPG_USER then .endmpg was found in the input stream. | |
3054 | If ENDMPG_INTERNAL then we've been invoked to finish off file insertion. | |
3055 | If ENDMPG_MIDDLE then we've been invoked in the middle of a long stretch | |
3056 | of vu code. */ | |
83920d29 | 3057 | |
498fcb9c | 3058 | static void |
8b901ef8 DE |
3059 | s_endmpg (caller) |
3060 | int caller; | |
498fcb9c | 3061 | { |
498fcb9c DE |
3062 | if (CUR_ASM_STATE != ASM_MPG) |
3063 | { | |
3064 | as_bad ("`.endmpg' has no matching `mpg' instruction"); | |
3065 | return; | |
3066 | } | |
3067 | ||
8b901ef8 DE |
3068 | /* Record in the end data symbol the current location. */ |
3069 | if (now_seg != S_GET_SEGMENT (vif_data_end)) | |
3070 | as_bad (".endmpg in different section"); | |
3071 | vif_data_end->sy_frag = frag_now; | |
3072 | S_SET_VALUE (vif_data_end, (valueT) frag_now_fix ()); | |
3073 | ||
3074 | /* Update $.mpgloc. | |
3075 | We have to leave the old value alone as it may be used in fixups | |
07b20428 DE |
3076 | already recorded. Since compute_mpgloc allocates a new symbol for the |
3077 | result we're ok. The new value is the old value plus the number of | |
8b901ef8 | 3078 | double words in this chunk. */ |
07b20428 | 3079 | mpgloc_sym = compute_mpgloc (mpgloc_sym, vif_data_start, vif_data_end); |
498fcb9c | 3080 | |
e4d77412 | 3081 | pop_asm_state (1); |
498fcb9c | 3082 | |
8b901ef8 DE |
3083 | /* Needn't be reset, but to catch bugs it is. */ |
3084 | vif_data_end = NULL; | |
498fcb9c | 3085 | |
83920d29 | 3086 | /* Reset the vu insn counter. */ |
8b901ef8 DE |
3087 | if (caller != ENDMPG_MIDDLE) |
3088 | vu_count = -1; | |
498fcb9c | 3089 | |
8b901ef8 | 3090 | if (caller == ENDMPG_USER) |
83920d29 | 3091 | demand_empty_rest_of_line (); |
498fcb9c DE |
3092 | } |
3093 | ||
ba4be194 DE |
3094 | /* INTERNAL_P is non-zero if invoked internally by this file rather than |
3095 | by the user. In this case we don't touch the input stream. */ | |
3096 | ||
498fcb9c | 3097 | static void |
ba4be194 DE |
3098 | s_endunpack (internal_p) |
3099 | int internal_p; | |
498fcb9c | 3100 | { |
498fcb9c DE |
3101 | if (CUR_ASM_STATE != ASM_UNPACK) |
3102 | { | |
3103 | as_bad ("`.endunpack' has no matching `unpack' instruction"); | |
3104 | return; | |
3105 | } | |
3106 | ||
8b901ef8 | 3107 | /* Record in the end data symbol the current location. */ |
40f3c6f8 DE |
3108 | /* ??? $.unpackloc is gone. Is this also used for data length |
3109 | verification? */ | |
8b901ef8 DE |
3110 | if (now_seg != S_GET_SEGMENT (vif_data_end)) |
3111 | as_bad (".endunpack in different section"); | |
3112 | vif_data_end->sy_frag = frag_now; | |
3113 | S_SET_VALUE (vif_data_end, (valueT) frag_now_fix ()); | |
65309b98 | 3114 | |
050ac694 DE |
3115 | /* Round up to next word boundary. */ |
3116 | frag_align (2, 0, 0); | |
3117 | ||
e4d77412 | 3118 | pop_asm_state (1); |
fe9efeb6 | 3119 | |
8b901ef8 DE |
3120 | /* Needn't be reset, but to catch bugs it is. */ |
3121 | vif_data_end = NULL; | |
498fcb9c | 3122 | |
ba4be194 DE |
3123 | if (! internal_p) |
3124 | demand_empty_rest_of_line (); | |
b5d20cf6 DE |
3125 | } |
3126 | ||
8151801a DE |
3127 | static void |
3128 | s_endgif (ignore) | |
3129 | int ignore; | |
3130 | { | |
fa3671a3 | 3131 | int bytes; |
d030671b DE |
3132 | int specified_nloop = gif_nloop (); |
3133 | int computed_nloop; | |
3134 | int nregs = gif_nregs (); | |
fa3671a3 DE |
3135 | char *file; |
3136 | unsigned int line; | |
3137 | ||
3138 | as_where (&file, &line); | |
8151801a | 3139 | |
498fcb9c | 3140 | if (CUR_ASM_STATE != ASM_GIF) |
8151801a DE |
3141 | { |
3142 | as_bad (".endgif doesn't follow a gif tag"); | |
3143 | return; | |
3144 | } | |
e4d77412 | 3145 | pop_asm_state (1); |
8151801a | 3146 | |
fa3671a3 DE |
3147 | /* Fill out to proper boundary. |
3148 | ??? This may cause eval_expr to always queue a fixup. So be it. */ | |
3149 | switch (gif_insn_type) | |
8151801a | 3150 | { |
fa3671a3 DE |
3151 | case GIF_PACKED : frag_align (4, 0, 0); break; |
3152 | case GIF_REGLIST : frag_align (3, 0, 0); break; | |
3153 | case GIF_IMAGE : frag_align (4, 0, 0); break; | |
8151801a DE |
3154 | } |
3155 | ||
8b901ef8 DE |
3156 | /* The -16 is because the `gif_data_name' label is emitted at the |
3157 | start of the gif tag. If we're in a different frag from the one we | |
3158 | started with, this can't be computed until much later. To cope we queue | |
3159 | a fixup and deal with it then. | |
fa3671a3 DE |
3160 | ??? The other way to handle this is by having expr() compute "syma - symb" |
3161 | when they're in different fragments but the difference is constant. | |
3162 | Not sure how much of a slowdown that will introduce though. */ | |
3163 | fixup_count = 0; | |
07b20428 | 3164 | bytes = eval_expr (DVP_GIF, gif_operand_nloop, 0, ". - %s - 16", gif_data_name); |
fa3671a3 DE |
3165 | |
3166 | /* Compute a value for nloop if we can. */ | |
3167 | ||
3168 | if (fixup_count == 0) | |
8151801a | 3169 | { |
fa3671a3 | 3170 | computed_nloop = compute_nloop (gif_insn_type, nregs, bytes); |
d030671b | 3171 | |
fa3671a3 DE |
3172 | /* If the user specified nloop, verify it. */ |
3173 | if (specified_nloop != -1) | |
8b901ef8 DE |
3174 | check_nloop (gif_insn_type, nregs, |
3175 | specified_nloop, computed_nloop, | |
fa3671a3 DE |
3176 | file, line); |
3177 | } | |
d030671b | 3178 | |
fa3671a3 DE |
3179 | /* If computation of nloop can't be done yet, queue a fixup and do it later. |
3180 | Otherwise validate nloop if specified or write the computed value into | |
d030671b | 3181 | the insn. */ |
fa3671a3 DE |
3182 | |
3183 | if (fixup_count != 0) | |
d030671b | 3184 | { |
fa3671a3 DE |
3185 | /* FIXME: It might eventually be possible to combine all the various |
3186 | copies of this bit of code. */ | |
3187 | int op_type, reloc_type, offset; | |
3188 | const dvp_operand *operand; | |
3189 | fixS *fix; | |
3190 | ||
3191 | op_type = fixups[0].opindex; | |
3192 | offset = fixups[0].offset; | |
3193 | reloc_type = encode_fixup_reloc_type (DVP_GIF, op_type); | |
3194 | operand = &gif_operands[op_type]; | |
3195 | fix = fix_new_exp (gif_insn_frag, | |
8b901ef8 DE |
3196 | (gif_insn_frag_loc + offset |
3197 | - gif_insn_frag->fr_literal), | |
fa3671a3 DE |
3198 | 4, &fixups[0].exp, 0, |
3199 | (bfd_reloc_code_real_type) reloc_type); | |
3200 | /* Record user specified value so we can test it when we compute the | |
3201 | actual value. */ | |
3202 | fix->tc_fix_data.type = gif_insn_type; | |
3203 | fix->tc_fix_data.nregs = nregs; | |
8b901ef8 | 3204 | fix->tc_fix_data.user_value = specified_nloop; |
8151801a | 3205 | } |
fa3671a3 DE |
3206 | else if (specified_nloop != -1) |
3207 | ; /* nothing to do */ | |
8151801a DE |
3208 | else |
3209 | { | |
fa3671a3 | 3210 | DVP_INSN insn = bfd_getl32 (gif_insn_frag_loc); |
8151801a DE |
3211 | insert_operand_final (DVP_GIF, &gif_operands[gif_operand_nloop], |
3212 | DVP_MOD_THIS_WORD, &insn, | |
d030671b | 3213 | (offsetT) computed_nloop, file, line); |
fa3671a3 | 3214 | bfd_putl32 ((bfd_vma) insn, gif_insn_frag_loc); |
8151801a DE |
3215 | } |
3216 | ||
8b901ef8 | 3217 | /* These needn't be reset, but to catch bugs they are. */ |
8151801a | 3218 | gif_data_name = NULL; |
8b901ef8 DE |
3219 | gif_insn_frag = NULL; |
3220 | gif_insn_frag_loc = NULL; | |
3221 | ||
8151801a DE |
3222 | demand_empty_rest_of_line (); |
3223 | } | |
3224 | ||
b5d20cf6 | 3225 | static void |
e4d77412 FCE |
3226 | s_vu (ignore) |
3227 | int ignore; | |
b5d20cf6 | 3228 | { |
d3c6610c DE |
3229 | /* If in MPG state and the user requests to change to VU state, |
3230 | leave the state as MPG. This happens when we see an mpg followed | |
07b20428 DE |
3231 | by a .include that has .vu. Note that no attempt is made to support |
3232 | an include depth > 1 for this case. */ | |
e4d77412 | 3233 | if (CUR_ASM_STATE == ASM_MPG) |
d3c6610c DE |
3234 | return; |
3235 | ||
e4d77412 FCE |
3236 | /* We need to set up things for $.mpgloc calculations. */ |
3237 | /* FIXME: May need to check that we're not clobbering currently | |
3238 | in use versions of these. Also need to worry about which section | |
3239 | the .vu is issued in. On the other hand, ".vu" isn't intended | |
3240 | to be supported everywhere. */ | |
3241 | vif_data_start = expr_build_dot (); | |
3242 | mpgloc_sym = expr_build_uconstant (0); | |
5dccb8b0 | 3243 | #if 0 /* ??? wip */ |
e4d77412 FCE |
3244 | create_vuoverlay_section (vuoverlay_section_name (NULL), mpgloc_sym, |
3245 | NULL, NULL); | |
1554baf3 | 3246 | #endif |
07b20428 | 3247 | |
e4d77412 | 3248 | set_asm_state (ASM_VU, ".vu"); |
4411d964 | 3249 | |
d3c6610c | 3250 | demand_empty_rest_of_line (); |
e1b747c4 | 3251 | } |
30596dfc DE |
3252 | |
3253 | /* Same as read.c:s_func except prepend VU_LABEL_PREFIX by default. */ | |
3254 | ||
3255 | static void | |
3256 | s_dvp_func (end_p) | |
3257 | int end_p; | |
3258 | { | |
3259 | do_s_func (end_p, VU_LABEL_PREFIX); | |
3260 | } |