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Commit | Line | Data |
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2e4b9b8c | 1 | /* Dwarf2 assembler output helper routines. |
ad616de1 | 2 | Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
2e4b9b8c | 3 | |
1322177d | 4 | This file is part of GCC. |
2e4b9b8c | 5 | |
1322177d LB |
6 | GCC is free software; you can redistribute it and/or modify it under |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 2, or (at your option) any later | |
9 | version. | |
2e4b9b8c | 10 | |
1322177d LB |
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
2e4b9b8c RH |
15 | |
16 | You should have received a copy of the GNU General Public License | |
1322177d | 17 | along with GCC; see the file COPYING. If not, write to the Free |
366ccddb KC |
18 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
19 | 02110-1301, USA. */ | |
2e4b9b8c RH |
20 | |
21 | ||
22 | #include "config.h" | |
23 | #include "system.h" | |
4977bab6 ZW |
24 | #include "coretypes.h" |
25 | #include "tm.h" | |
2e4b9b8c | 26 | #include "flags.h" |
2a1ee410 | 27 | #include "tree.h" |
2e4b9b8c RH |
28 | #include "rtl.h" |
29 | #include "output.h" | |
301d03af | 30 | #include "target.h" |
2e4b9b8c | 31 | #include "dwarf2asm.h" |
2a1ee410 RH |
32 | #include "dwarf2.h" |
33 | #include "splay-tree.h" | |
34 | #include "ggc.h" | |
2e4b9b8c RH |
35 | #include "tm_p.h" |
36 | ||
37 | ||
38 | /* How to start an assembler comment. */ | |
39 | #ifndef ASM_COMMENT_START | |
40 | #define ASM_COMMENT_START ";#" | |
41 | #endif | |
42 | ||
2e4b9b8c | 43 | \f |
301d03af RS |
44 | /* Output an unaligned integer with the given value and size. Prefer not |
45 | to print a newline, since the caller may want to add a comment. */ | |
46 | ||
47 | void | |
7080f735 | 48 | dw2_assemble_integer (int size, rtx x) |
2e4b9b8c | 49 | { |
301d03af RS |
50 | const char *op = integer_asm_op (size, FALSE); |
51 | ||
52 | if (op) | |
2e4b9b8c | 53 | { |
301d03af RS |
54 | fputs (op, asm_out_file); |
55 | if (GET_CODE (x) == CONST_INT) | |
56 | fprintf (asm_out_file, HOST_WIDE_INT_PRINT_HEX, INTVAL (x)); | |
57 | else | |
58 | output_addr_const (asm_out_file, x); | |
2e4b9b8c | 59 | } |
301d03af RS |
60 | else |
61 | assemble_integer (x, size, BITS_PER_UNIT, 1); | |
2e4b9b8c | 62 | } |
3a538a66 | 63 | |
2e4b9b8c | 64 | |
8e7fa2c8 RH |
65 | /* Output an immediate constant in a given size. */ |
66 | ||
2e4b9b8c | 67 | void |
e34d07f2 KG |
68 | dw2_asm_output_data (int size, unsigned HOST_WIDE_INT value, |
69 | const char *comment, ...) | |
2e4b9b8c | 70 | { |
e34d07f2 | 71 | va_list ap; |
7080f735 | 72 | |
e34d07f2 | 73 | va_start (ap, comment); |
2e4b9b8c | 74 | |
da6af203 | 75 | if (size * 8 < HOST_BITS_PER_WIDE_INT) |
c4f2c499 | 76 | value &= ~(~(unsigned HOST_WIDE_INT) 0 << (size * 8)); |
da6af203 | 77 | |
301d03af | 78 | dw2_assemble_integer (size, GEN_INT (value)); |
2e4b9b8c RH |
79 | |
80 | if (flag_debug_asm && comment) | |
81 | { | |
82 | fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
83 | vfprintf (asm_out_file, comment, ap); | |
84 | } | |
85 | fputc ('\n', asm_out_file); | |
86 | ||
e34d07f2 | 87 | va_end (ap); |
2e4b9b8c RH |
88 | } |
89 | ||
8e7fa2c8 RH |
90 | /* Output the difference between two symbols in a given size. */ |
91 | /* ??? There appear to be assemblers that do not like such | |
92 | subtraction, but do support ASM_SET_OP. It's unfortunately | |
93 | impossible to do here, since the ASM_SET_OP for the difference | |
94 | symbol must appear after both symbols are defined. */ | |
95 | ||
2e4b9b8c | 96 | void |
e34d07f2 KG |
97 | dw2_asm_output_delta (int size, const char *lab1, const char *lab2, |
98 | const char *comment, ...) | |
2e4b9b8c | 99 | { |
e34d07f2 | 100 | va_list ap; |
7080f735 | 101 | |
e34d07f2 | 102 | va_start (ap, comment); |
2e4b9b8c | 103 | |
7606e68f SS |
104 | #ifdef ASM_OUTPUT_DWARF_DELTA |
105 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, size, lab1, lab2); | |
106 | #else | |
301d03af RS |
107 | dw2_assemble_integer (size, |
108 | gen_rtx_MINUS (Pmode, | |
109 | gen_rtx_SYMBOL_REF (Pmode, lab1), | |
110 | gen_rtx_SYMBOL_REF (Pmode, lab2))); | |
7606e68f | 111 | #endif |
2e4b9b8c RH |
112 | if (flag_debug_asm && comment) |
113 | { | |
114 | fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
115 | vfprintf (asm_out_file, comment, ap); | |
116 | } | |
117 | fputc ('\n', asm_out_file); | |
118 | ||
e34d07f2 | 119 | va_end (ap); |
2e4b9b8c RH |
120 | } |
121 | ||
192d0f89 GK |
122 | /* Output a section-relative reference to a LABEL, which was placed in |
123 | BASE. In general this can only be done for debugging symbols. | |
124 | E.g. on most targets with the GNU linker, this is accomplished with | |
125 | a direct reference and the knowledge that the debugging section | |
126 | will be placed at VMA 0. Some targets have special relocations for | |
127 | this that we must use. */ | |
8e7fa2c8 | 128 | |
2e4b9b8c | 129 | void |
79252435 SB |
130 | dw2_asm_output_offset (int size, const char *label, |
131 | section *base ATTRIBUTE_UNUSED, | |
e34d07f2 | 132 | const char *comment, ...) |
2e4b9b8c | 133 | { |
e34d07f2 | 134 | va_list ap; |
7080f735 | 135 | |
e34d07f2 | 136 | va_start (ap, comment); |
2e4b9b8c | 137 | |
8e7fa2c8 | 138 | #ifdef ASM_OUTPUT_DWARF_OFFSET |
192d0f89 | 139 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, size, label, base); |
8e7fa2c8 | 140 | #else |
301d03af | 141 | dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label)); |
2e4b9b8c RH |
142 | #endif |
143 | ||
144 | if (flag_debug_asm && comment) | |
145 | { | |
146 | fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
147 | vfprintf (asm_out_file, comment, ap); | |
148 | } | |
149 | fputc ('\n', asm_out_file); | |
150 | ||
e34d07f2 | 151 | va_end (ap); |
2e4b9b8c RH |
152 | } |
153 | ||
c8f4fe99 BE |
154 | #if 0 |
155 | ||
8e7fa2c8 RH |
156 | /* Output a self-relative reference to a label, possibly in a |
157 | different section or object file. */ | |
158 | ||
2e4b9b8c | 159 | void |
e34d07f2 KG |
160 | dw2_asm_output_pcrel (int size ATTRIBUTE_UNUSED, |
161 | const char *label ATTRIBUTE_UNUSED, | |
162 | const char *comment, ...) | |
2e4b9b8c | 163 | { |
e34d07f2 | 164 | va_list ap; |
7080f735 | 165 | |
e34d07f2 | 166 | va_start (ap, comment); |
2e4b9b8c | 167 | |
8e7fa2c8 RH |
168 | #ifdef ASM_OUTPUT_DWARF_PCREL |
169 | ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, label); | |
170 | #else | |
301d03af RS |
171 | dw2_assemble_integer (size, |
172 | gen_rtx_MINUS (Pmode, | |
173 | gen_rtx_SYMBOL_REF (Pmode, label), | |
174 | pc_rtx)); | |
8e7fa2c8 RH |
175 | #endif |
176 | ||
177 | if (flag_debug_asm && comment) | |
178 | { | |
179 | fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
180 | vfprintf (asm_out_file, comment, ap); | |
181 | } | |
182 | fputc ('\n', asm_out_file); | |
183 | ||
e34d07f2 | 184 | va_end (ap); |
8e7fa2c8 | 185 | } |
c8f4fe99 | 186 | #endif /* 0 */ |
8e7fa2c8 RH |
187 | |
188 | /* Output an absolute reference to a label. */ | |
189 | ||
190 | void | |
e34d07f2 KG |
191 | dw2_asm_output_addr (int size, const char *label, |
192 | const char *comment, ...) | |
8e7fa2c8 | 193 | { |
e34d07f2 | 194 | va_list ap; |
7080f735 | 195 | |
e34d07f2 | 196 | va_start (ap, comment); |
8e7fa2c8 | 197 | |
301d03af | 198 | dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label)); |
2e4b9b8c RH |
199 | |
200 | if (flag_debug_asm && comment) | |
201 | { | |
202 | fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
203 | vfprintf (asm_out_file, comment, ap); | |
204 | } | |
205 | fputc ('\n', asm_out_file); | |
206 | ||
e34d07f2 | 207 | va_end (ap); |
2e4b9b8c RH |
208 | } |
209 | ||
8e7fa2c8 RH |
210 | /* Similar, but use an RTX expression instead of a text label. */ |
211 | ||
2e4b9b8c | 212 | void |
e34d07f2 KG |
213 | dw2_asm_output_addr_rtx (int size, rtx addr, |
214 | const char *comment, ...) | |
2e4b9b8c | 215 | { |
e34d07f2 | 216 | va_list ap; |
7080f735 | 217 | |
e34d07f2 | 218 | va_start (ap, comment); |
2e4b9b8c | 219 | |
301d03af | 220 | dw2_assemble_integer (size, addr); |
2e4b9b8c RH |
221 | |
222 | if (flag_debug_asm && comment) | |
223 | { | |
224 | fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
225 | vfprintf (asm_out_file, comment, ap); | |
226 | } | |
227 | fputc ('\n', asm_out_file); | |
228 | ||
e34d07f2 | 229 | va_end (ap); |
2e4b9b8c RH |
230 | } |
231 | ||
1e290ba1 JB |
232 | /* Output the first ORIG_LEN characters of STR as a string. |
233 | If ORIG_LEN is equal to -1, ignore this parameter and output | |
234 | the entire STR instead. | |
235 | If COMMENT is not NULL and comments in the debug information | |
236 | have been requested by the user, append the given COMMENT | |
237 | to the generated output. */ | |
238 | ||
2e4b9b8c | 239 | void |
e34d07f2 KG |
240 | dw2_asm_output_nstring (const char *str, size_t orig_len, |
241 | const char *comment, ...) | |
2e4b9b8c | 242 | { |
7a75edb7 | 243 | size_t i, len; |
e34d07f2 | 244 | va_list ap; |
2e4b9b8c | 245 | |
e34d07f2 | 246 | va_start (ap, comment); |
2e4b9b8c | 247 | |
7a75edb7 | 248 | len = orig_len; |
2e4b9b8c RH |
249 | |
250 | if (len == (size_t) -1) | |
251 | len = strlen (str); | |
252 | ||
253 | if (flag_debug_asm && comment) | |
254 | { | |
255 | fputs ("\t.ascii \"", asm_out_file); | |
256 | for (i = 0; i < len; i++) | |
257 | { | |
258 | int c = str[i]; | |
259 | if (c == '\"' || c == '\\') | |
260 | fputc ('\\', asm_out_file); | |
261 | if (ISPRINT(c)) | |
262 | fputc (c, asm_out_file); | |
263 | else | |
264 | fprintf (asm_out_file, "\\%o", c); | |
265 | } | |
266 | fprintf (asm_out_file, "\\0\"\t%s ", ASM_COMMENT_START); | |
267 | vfprintf (asm_out_file, comment, ap); | |
268 | fputc ('\n', asm_out_file); | |
269 | } | |
270 | else | |
271 | { | |
272 | /* If an explicit length was given, we can't assume there | |
273 | is a null termination in the string buffer. */ | |
274 | if (orig_len == (size_t) -1) | |
275 | len += 1; | |
276 | ASM_OUTPUT_ASCII (asm_out_file, str, len); | |
277 | if (orig_len != (size_t) -1) | |
301d03af | 278 | assemble_integer (const0_rtx, 1, BITS_PER_UNIT, 1); |
2e4b9b8c RH |
279 | } |
280 | ||
e34d07f2 | 281 | va_end (ap); |
2e4b9b8c RH |
282 | } |
283 | \f | |
284 | ||
285 | /* Return the size of an unsigned LEB128 quantity. */ | |
286 | ||
287 | int | |
7080f735 | 288 | size_of_uleb128 (unsigned HOST_WIDE_INT value) |
2e4b9b8c | 289 | { |
4977bab6 | 290 | int size = 0; |
2e4b9b8c RH |
291 | |
292 | do | |
293 | { | |
2e4b9b8c RH |
294 | value >>= 7; |
295 | size += 1; | |
296 | } | |
297 | while (value != 0); | |
298 | ||
299 | return size; | |
300 | } | |
301 | ||
302 | /* Return the size of a signed LEB128 quantity. */ | |
303 | ||
304 | int | |
7080f735 | 305 | size_of_sleb128 (HOST_WIDE_INT value) |
2e4b9b8c RH |
306 | { |
307 | int size = 0, byte; | |
308 | ||
309 | do | |
310 | { | |
311 | byte = (value & 0x7f); | |
312 | value >>= 7; | |
313 | size += 1; | |
314 | } | |
315 | while (!((value == 0 && (byte & 0x40) == 0) | |
316 | || (value == -1 && (byte & 0x40) != 0))); | |
317 | ||
318 | return size; | |
319 | } | |
320 | ||
b627d6fe | 321 | /* Given an encoding, return the number of bytes the format occupies. |
3a538a66 | 322 | This is only defined for fixed-size encodings, and so does not |
b627d6fe RH |
323 | include leb128. */ |
324 | ||
325 | int | |
7080f735 | 326 | size_of_encoded_value (int encoding) |
b627d6fe RH |
327 | { |
328 | if (encoding == DW_EH_PE_omit) | |
329 | return 0; | |
330 | ||
331 | switch (encoding & 0x07) | |
332 | { | |
333 | case DW_EH_PE_absptr: | |
334 | return POINTER_SIZE / BITS_PER_UNIT; | |
335 | case DW_EH_PE_udata2: | |
336 | return 2; | |
337 | case DW_EH_PE_udata4: | |
338 | return 4; | |
339 | case DW_EH_PE_udata8: | |
340 | return 8; | |
ced3f397 NS |
341 | default: |
342 | gcc_unreachable (); | |
b627d6fe | 343 | } |
b627d6fe RH |
344 | } |
345 | ||
e1f9550a RH |
346 | /* Yield a name for a given pointer encoding. */ |
347 | ||
348 | const char * | |
7080f735 | 349 | eh_data_format_name (int format) |
e1f9550a RH |
350 | { |
351 | #if HAVE_DESIGNATED_INITIALIZERS | |
352 | #define S(p, v) [p] = v, | |
353 | #else | |
354 | #define S(p, v) case p: return v; | |
355 | #endif | |
356 | ||
357 | #if HAVE_DESIGNATED_INITIALIZERS | |
358 | __extension__ static const char * const format_names[256] = { | |
359 | #else | |
360 | switch (format) { | |
361 | #endif | |
362 | ||
363 | S(DW_EH_PE_absptr, "absolute") | |
364 | S(DW_EH_PE_omit, "omit") | |
099c8b17 | 365 | S(DW_EH_PE_aligned, "aligned absolute") |
e1f9550a RH |
366 | |
367 | S(DW_EH_PE_uleb128, "uleb128") | |
368 | S(DW_EH_PE_udata2, "udata2") | |
369 | S(DW_EH_PE_udata4, "udata4") | |
370 | S(DW_EH_PE_udata8, "udata8") | |
371 | S(DW_EH_PE_sleb128, "sleb128") | |
372 | S(DW_EH_PE_sdata2, "sdata2") | |
373 | S(DW_EH_PE_sdata4, "sdata4") | |
374 | S(DW_EH_PE_sdata8, "sdata8") | |
375 | ||
f90811a2 | 376 | S(DW_EH_PE_absptr | DW_EH_PE_pcrel, "pcrel") |
e1f9550a RH |
377 | S(DW_EH_PE_uleb128 | DW_EH_PE_pcrel, "pcrel uleb128") |
378 | S(DW_EH_PE_udata2 | DW_EH_PE_pcrel, "pcrel udata2") | |
379 | S(DW_EH_PE_udata4 | DW_EH_PE_pcrel, "pcrel udata4") | |
380 | S(DW_EH_PE_udata8 | DW_EH_PE_pcrel, "pcrel udata8") | |
381 | S(DW_EH_PE_sleb128 | DW_EH_PE_pcrel, "pcrel sleb128") | |
382 | S(DW_EH_PE_sdata2 | DW_EH_PE_pcrel, "pcrel sdata2") | |
383 | S(DW_EH_PE_sdata4 | DW_EH_PE_pcrel, "pcrel sdata4") | |
384 | S(DW_EH_PE_sdata8 | DW_EH_PE_pcrel, "pcrel sdata8") | |
385 | ||
f90811a2 | 386 | S(DW_EH_PE_absptr | DW_EH_PE_textrel, "textrel") |
e1f9550a RH |
387 | S(DW_EH_PE_uleb128 | DW_EH_PE_textrel, "textrel uleb128") |
388 | S(DW_EH_PE_udata2 | DW_EH_PE_textrel, "textrel udata2") | |
389 | S(DW_EH_PE_udata4 | DW_EH_PE_textrel, "textrel udata4") | |
390 | S(DW_EH_PE_udata8 | DW_EH_PE_textrel, "textrel udata8") | |
391 | S(DW_EH_PE_sleb128 | DW_EH_PE_textrel, "textrel sleb128") | |
392 | S(DW_EH_PE_sdata2 | DW_EH_PE_textrel, "textrel sdata2") | |
393 | S(DW_EH_PE_sdata4 | DW_EH_PE_textrel, "textrel sdata4") | |
394 | S(DW_EH_PE_sdata8 | DW_EH_PE_textrel, "textrel sdata8") | |
395 | ||
f90811a2 | 396 | S(DW_EH_PE_absptr | DW_EH_PE_datarel, "datarel") |
e1f9550a RH |
397 | S(DW_EH_PE_uleb128 | DW_EH_PE_datarel, "datarel uleb128") |
398 | S(DW_EH_PE_udata2 | DW_EH_PE_datarel, "datarel udata2") | |
399 | S(DW_EH_PE_udata4 | DW_EH_PE_datarel, "datarel udata4") | |
400 | S(DW_EH_PE_udata8 | DW_EH_PE_datarel, "datarel udata8") | |
401 | S(DW_EH_PE_sleb128 | DW_EH_PE_datarel, "datarel sleb128") | |
402 | S(DW_EH_PE_sdata2 | DW_EH_PE_datarel, "datarel sdata2") | |
403 | S(DW_EH_PE_sdata4 | DW_EH_PE_datarel, "datarel sdata4") | |
404 | S(DW_EH_PE_sdata8 | DW_EH_PE_datarel, "datarel sdata8") | |
405 | ||
f90811a2 | 406 | S(DW_EH_PE_absptr | DW_EH_PE_funcrel, "funcrel") |
e1f9550a RH |
407 | S(DW_EH_PE_uleb128 | DW_EH_PE_funcrel, "funcrel uleb128") |
408 | S(DW_EH_PE_udata2 | DW_EH_PE_funcrel, "funcrel udata2") | |
409 | S(DW_EH_PE_udata4 | DW_EH_PE_funcrel, "funcrel udata4") | |
410 | S(DW_EH_PE_udata8 | DW_EH_PE_funcrel, "funcrel udata8") | |
411 | S(DW_EH_PE_sleb128 | DW_EH_PE_funcrel, "funcrel sleb128") | |
412 | S(DW_EH_PE_sdata2 | DW_EH_PE_funcrel, "funcrel sdata2") | |
413 | S(DW_EH_PE_sdata4 | DW_EH_PE_funcrel, "funcrel sdata4") | |
414 | S(DW_EH_PE_sdata8 | DW_EH_PE_funcrel, "funcrel sdata8") | |
415 | ||
f90811a2 RH |
416 | S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_pcrel, |
417 | "indirect pcrel") | |
e1f9550a RH |
418 | S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_pcrel, |
419 | "indirect pcrel uleb128") | |
420 | S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_pcrel, | |
421 | "indirect pcrel udata2") | |
422 | S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_pcrel, | |
423 | "indirect pcrel udata4") | |
424 | S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_pcrel, | |
425 | "indirect pcrel udata8") | |
426 | S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_pcrel, | |
427 | "indirect pcrel sleb128") | |
428 | S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_pcrel, | |
429 | "indirect pcrel sdata2") | |
430 | S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_pcrel, | |
431 | "indirect pcrel sdata4") | |
432 | S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_pcrel, | |
433 | "indirect pcrel sdata8") | |
434 | ||
f90811a2 RH |
435 | S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_textrel, |
436 | "indirect textrel") | |
e1f9550a RH |
437 | S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_textrel, |
438 | "indirect textrel uleb128") | |
439 | S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_textrel, | |
440 | "indirect textrel udata2") | |
441 | S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_textrel, | |
442 | "indirect textrel udata4") | |
443 | S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_textrel, | |
444 | "indirect textrel udata8") | |
445 | S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_textrel, | |
446 | "indirect textrel sleb128") | |
447 | S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_textrel, | |
448 | "indirect textrel sdata2") | |
449 | S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_textrel, | |
450 | "indirect textrel sdata4") | |
451 | S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_textrel, | |
452 | "indirect textrel sdata8") | |
453 | ||
f90811a2 RH |
454 | S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_datarel, |
455 | "indirect datarel") | |
e1f9550a RH |
456 | S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_datarel, |
457 | "indirect datarel uleb128") | |
458 | S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_datarel, | |
459 | "indirect datarel udata2") | |
460 | S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_datarel, | |
461 | "indirect datarel udata4") | |
462 | S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_datarel, | |
463 | "indirect datarel udata8") | |
464 | S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_datarel, | |
465 | "indirect datarel sleb128") | |
466 | S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_datarel, | |
467 | "indirect datarel sdata2") | |
468 | S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_datarel, | |
469 | "indirect datarel sdata4") | |
470 | S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_datarel, | |
471 | "indirect datarel sdata8") | |
472 | ||
f90811a2 RH |
473 | S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_funcrel, |
474 | "indirect funcrel") | |
e1f9550a RH |
475 | S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_funcrel, |
476 | "indirect funcrel uleb128") | |
477 | S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_funcrel, | |
478 | "indirect funcrel udata2") | |
479 | S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_funcrel, | |
480 | "indirect funcrel udata4") | |
481 | S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_funcrel, | |
482 | "indirect funcrel udata8") | |
483 | S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_funcrel, | |
484 | "indirect funcrel sleb128") | |
485 | S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_funcrel, | |
486 | "indirect funcrel sdata2") | |
487 | S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_funcrel, | |
488 | "indirect funcrel sdata4") | |
489 | S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_funcrel, | |
490 | "indirect funcrel sdata8") | |
491 | ||
492 | #if HAVE_DESIGNATED_INITIALIZERS | |
493 | }; | |
494 | ||
ced3f397 NS |
495 | gcc_assert (format >= 0 && format < 0x100 && format_names[format]); |
496 | ||
e1f9550a RH |
497 | return format_names[format]; |
498 | #else | |
499 | } | |
ced3f397 | 500 | gcc_unreachable (); |
e1f9550a RH |
501 | #endif |
502 | } | |
503 | ||
2e4b9b8c RH |
504 | /* Output an unsigned LEB128 quantity. */ |
505 | ||
506 | void | |
e34d07f2 KG |
507 | dw2_asm_output_data_uleb128 (unsigned HOST_WIDE_INT value, |
508 | const char *comment, ...) | |
2e4b9b8c | 509 | { |
e34d07f2 | 510 | va_list ap; |
7080f735 | 511 | |
e34d07f2 | 512 | va_start (ap, comment); |
2e4b9b8c RH |
513 | |
514 | #ifdef HAVE_AS_LEB128 | |
90ff44cf | 515 | fprintf (asm_out_file, "\t.uleb128 " HOST_WIDE_INT_PRINT_HEX , value); |
2e4b9b8c RH |
516 | |
517 | if (flag_debug_asm && comment) | |
518 | { | |
519 | fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
520 | vfprintf (asm_out_file, comment, ap); | |
521 | } | |
522 | #else | |
523 | { | |
524 | unsigned HOST_WIDE_INT work = value; | |
301d03af | 525 | const char *byte_op = targetm.asm_out.byte_op; |
2e4b9b8c | 526 | |
301d03af RS |
527 | if (byte_op) |
528 | fputs (byte_op, asm_out_file); | |
2e4b9b8c RH |
529 | do |
530 | { | |
531 | int byte = (work & 0x7f); | |
532 | work >>= 7; | |
533 | if (work != 0) | |
534 | /* More bytes to follow. */ | |
535 | byte |= 0x80; | |
536 | ||
301d03af RS |
537 | if (byte_op) |
538 | { | |
539 | fprintf (asm_out_file, "0x%x", byte); | |
540 | if (work != 0) | |
541 | fputc (',', asm_out_file); | |
542 | } | |
543 | else | |
544 | assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1); | |
2e4b9b8c RH |
545 | } |
546 | while (work != 0); | |
547 | ||
548 | if (flag_debug_asm) | |
549 | { | |
90ff44cf KG |
550 | fprintf (asm_out_file, "\t%s uleb128 " HOST_WIDE_INT_PRINT_HEX, |
551 | ASM_COMMENT_START, value); | |
2e4b9b8c RH |
552 | if (comment) |
553 | { | |
554 | fputs ("; ", asm_out_file); | |
555 | vfprintf (asm_out_file, comment, ap); | |
556 | } | |
557 | } | |
558 | } | |
559 | #endif | |
560 | fputc ('\n', asm_out_file); | |
561 | ||
e34d07f2 | 562 | va_end (ap); |
2e4b9b8c RH |
563 | } |
564 | ||
09da1532 | 565 | /* Output a signed LEB128 quantity. */ |
2e4b9b8c RH |
566 | |
567 | void | |
e34d07f2 KG |
568 | dw2_asm_output_data_sleb128 (HOST_WIDE_INT value, |
569 | const char *comment, ...) | |
2e4b9b8c | 570 | { |
e34d07f2 | 571 | va_list ap; |
7080f735 | 572 | |
e34d07f2 | 573 | va_start (ap, comment); |
2e4b9b8c RH |
574 | |
575 | #ifdef HAVE_AS_LEB128 | |
90ff44cf | 576 | fprintf (asm_out_file, "\t.sleb128 " HOST_WIDE_INT_PRINT_DEC, value); |
2e4b9b8c RH |
577 | |
578 | if (flag_debug_asm && comment) | |
579 | { | |
580 | fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
581 | vfprintf (asm_out_file, comment, ap); | |
582 | } | |
583 | #else | |
584 | { | |
585 | HOST_WIDE_INT work = value; | |
586 | int more, byte; | |
301d03af | 587 | const char *byte_op = targetm.asm_out.byte_op; |
2e4b9b8c | 588 | |
301d03af RS |
589 | if (byte_op) |
590 | fputs (byte_op, asm_out_file); | |
2e4b9b8c RH |
591 | do |
592 | { | |
593 | byte = (work & 0x7f); | |
594 | /* arithmetic shift */ | |
595 | work >>= 7; | |
596 | more = !((work == 0 && (byte & 0x40) == 0) | |
597 | || (work == -1 && (byte & 0x40) != 0)); | |
598 | if (more) | |
599 | byte |= 0x80; | |
600 | ||
301d03af RS |
601 | if (byte_op) |
602 | { | |
603 | fprintf (asm_out_file, "0x%x", byte); | |
604 | if (more) | |
605 | fputc (',', asm_out_file); | |
606 | } | |
607 | else | |
608 | assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1); | |
2e4b9b8c RH |
609 | } |
610 | while (more); | |
611 | ||
612 | if (flag_debug_asm) | |
613 | { | |
90ff44cf KG |
614 | fprintf (asm_out_file, "\t%s sleb128 " HOST_WIDE_INT_PRINT_DEC, |
615 | ASM_COMMENT_START, value); | |
2e4b9b8c RH |
616 | if (comment) |
617 | { | |
618 | fputs ("; ", asm_out_file); | |
619 | vfprintf (asm_out_file, comment, ap); | |
620 | } | |
621 | } | |
622 | } | |
623 | #endif | |
624 | fputc ('\n', asm_out_file); | |
625 | ||
e34d07f2 | 626 | va_end (ap); |
2e4b9b8c RH |
627 | } |
628 | ||
629 | void | |
e34d07f2 KG |
630 | dw2_asm_output_delta_uleb128 (const char *lab1 ATTRIBUTE_UNUSED, |
631 | const char *lab2 ATTRIBUTE_UNUSED, | |
632 | const char *comment, ...) | |
2e4b9b8c | 633 | { |
e34d07f2 KG |
634 | va_list ap; |
635 | ||
636 | va_start (ap, comment); | |
2e4b9b8c RH |
637 | |
638 | #ifdef HAVE_AS_LEB128 | |
da6af203 | 639 | fputs ("\t.uleb128 ", asm_out_file); |
2e4b9b8c RH |
640 | assemble_name (asm_out_file, lab1); |
641 | fputc ('-', asm_out_file); | |
642 | assemble_name (asm_out_file, lab2); | |
643 | #else | |
ced3f397 | 644 | gcc_unreachable (); |
2e4b9b8c RH |
645 | #endif |
646 | ||
647 | if (flag_debug_asm && comment) | |
648 | { | |
649 | fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
650 | vfprintf (asm_out_file, comment, ap); | |
651 | } | |
652 | fputc ('\n', asm_out_file); | |
653 | ||
e34d07f2 | 654 | va_end (ap); |
2e4b9b8c RH |
655 | } |
656 | ||
c8f4fe99 BE |
657 | #if 0 |
658 | ||
2e4b9b8c | 659 | void |
e34d07f2 KG |
660 | dw2_asm_output_delta_sleb128 (const char *lab1 ATTRIBUTE_UNUSED, |
661 | const char *lab2 ATTRIBUTE_UNUSED, | |
662 | const char *comment, ...) | |
2e4b9b8c | 663 | { |
e34d07f2 | 664 | va_list ap; |
7080f735 | 665 | |
e34d07f2 | 666 | va_start (ap, comment); |
2e4b9b8c RH |
667 | |
668 | #ifdef HAVE_AS_LEB128 | |
da6af203 | 669 | fputs ("\t.sleb128 ", asm_out_file); |
2e4b9b8c RH |
670 | assemble_name (asm_out_file, lab1); |
671 | fputc ('-', asm_out_file); | |
672 | assemble_name (asm_out_file, lab2); | |
673 | #else | |
ced3f397 | 674 | gcc_unreachable (); |
2e4b9b8c RH |
675 | #endif |
676 | ||
677 | if (flag_debug_asm && comment) | |
678 | { | |
679 | fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
680 | vfprintf (asm_out_file, comment, ap); | |
681 | } | |
682 | fputc ('\n', asm_out_file); | |
683 | ||
e34d07f2 | 684 | va_end (ap); |
2e4b9b8c | 685 | } |
c8f4fe99 | 686 | #endif /* 0 */ |
2a1ee410 | 687 | \f |
b03e9863 | 688 | static rtx dw2_force_const_mem (rtx, bool); |
7080f735 | 689 | static int dw2_output_indirect_constant_1 (splay_tree_node, void *); |
2a1ee410 | 690 | |
17211ab5 GK |
691 | static GTY((param1_is (char *), param2_is (tree))) splay_tree indirect_pool; |
692 | ||
693 | static GTY(()) int dw2_const_labelno; | |
2a1ee410 | 694 | |
d6d26764 JJ |
695 | #if defined(HAVE_GAS_HIDDEN) && defined(SUPPORTS_ONE_ONLY) |
696 | # define USE_LINKONCE_INDIRECT 1 | |
697 | #else | |
698 | # define USE_LINKONCE_INDIRECT 0 | |
699 | #endif | |
700 | ||
e1f9550a RH |
701 | /* Put X, a SYMBOL_REF, in memory. Return a SYMBOL_REF to the allocated |
702 | memory. Differs from force_const_mem in that a single pool is used for | |
703 | the entire unit of translation, and the memory is not guaranteed to be | |
b03e9863 EB |
704 | "near" the function in any interesting sense. PUBLIC controls whether |
705 | the symbol can be shared across the entire application (or DSO). */ | |
e1f9550a | 706 | |
2a1ee410 | 707 | static rtx |
b03e9863 | 708 | dw2_force_const_mem (rtx x, bool public) |
2a1ee410 RH |
709 | { |
710 | splay_tree_node node; | |
1ee9fb20 | 711 | const char *str; |
d6d26764 | 712 | tree decl; |
2a1ee410 RH |
713 | |
714 | if (! indirect_pool) | |
17211ab5 | 715 | indirect_pool = splay_tree_new_ggc (splay_tree_compare_pointers); |
2a1ee410 | 716 | |
ced3f397 | 717 | gcc_assert (GET_CODE (x) == SYMBOL_REF); |
1ee9fb20 | 718 | |
245f1bfa | 719 | str = targetm.strip_name_encoding (XSTR (x, 0)); |
1ee9fb20 | 720 | node = splay_tree_lookup (indirect_pool, (splay_tree_key) str); |
2a1ee410 | 721 | if (node) |
d6d26764 | 722 | decl = (tree) node->value; |
2a1ee410 RH |
723 | else |
724 | { | |
2a1ee410 RH |
725 | tree id; |
726 | ||
b03e9863 | 727 | if (public && USE_LINKONCE_INDIRECT) |
d6d26764 | 728 | { |
1ee9fb20 | 729 | char *ref_name = alloca (strlen (str) + sizeof "DW.ref."); |
d6d26764 | 730 | |
1ee9fb20 | 731 | sprintf (ref_name, "DW.ref.%s", str); |
d6d26764 JJ |
732 | id = get_identifier (ref_name); |
733 | decl = build_decl (VAR_DECL, id, ptr_type_node); | |
734 | DECL_ARTIFICIAL (decl) = 1; | |
78e0d62b | 735 | DECL_IGNORED_P (decl) = 1; |
a8988448 | 736 | TREE_PUBLIC (decl) = 1; |
d6d26764 JJ |
737 | DECL_INITIAL (decl) = decl; |
738 | make_decl_one_only (decl); | |
739 | } | |
740 | else | |
741 | { | |
d6d26764 JJ |
742 | char label[32]; |
743 | ||
17211ab5 GK |
744 | ASM_GENERATE_INTERNAL_LABEL (label, "LDFCM", dw2_const_labelno); |
745 | ++dw2_const_labelno; | |
d6d26764 JJ |
746 | id = get_identifier (label); |
747 | decl = build_decl (VAR_DECL, id, ptr_type_node); | |
748 | DECL_ARTIFICIAL (decl) = 1; | |
78e0d62b | 749 | DECL_IGNORED_P (decl) = 1; |
a8988448 | 750 | TREE_STATIC (decl) = 1; |
d6d26764 JJ |
751 | DECL_INITIAL (decl) = decl; |
752 | } | |
2a1ee410 | 753 | |
1ee9fb20 | 754 | id = maybe_get_identifier (str); |
2a1ee410 RH |
755 | if (id) |
756 | TREE_SYMBOL_REFERENCED (id) = 1; | |
757 | ||
1ee9fb20 | 758 | splay_tree_insert (indirect_pool, (splay_tree_key) str, |
d6d26764 | 759 | (splay_tree_value) decl); |
2a1ee410 RH |
760 | } |
761 | ||
d6d26764 | 762 | return XEXP (DECL_RTL (decl), 0); |
2a1ee410 RH |
763 | } |
764 | ||
e1f9550a RH |
765 | /* A helper function for dw2_output_indirect_constants called through |
766 | splay_tree_foreach. Emit one queued constant to memory. */ | |
767 | ||
2a1ee410 | 768 | static int |
7080f735 AJ |
769 | dw2_output_indirect_constant_1 (splay_tree_node node, |
770 | void *data ATTRIBUTE_UNUSED) | |
2a1ee410 | 771 | { |
d6d26764 | 772 | const char *sym; |
2a1ee410 | 773 | rtx sym_ref; |
b03e9863 | 774 | tree decl; |
2a1ee410 | 775 | |
2a1ee410 | 776 | sym = (const char *) node->key; |
b03e9863 | 777 | decl = (tree) node->value; |
2a1ee410 | 778 | sym_ref = gen_rtx_SYMBOL_REF (Pmode, sym); |
b03e9863 | 779 | if (TREE_PUBLIC (decl) && USE_LINKONCE_INDIRECT) |
a5c414e0 | 780 | fprintf (asm_out_file, "\t.hidden %sDW.ref.%s\n", user_label_prefix, sym); |
b03e9863 | 781 | assemble_variable (decl, 1, 1, 1); |
2919600a | 782 | assemble_integer (sym_ref, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1); |
2a1ee410 RH |
783 | |
784 | return 0; | |
785 | } | |
786 | ||
e1f9550a RH |
787 | /* Emit the constants queued through dw2_force_const_mem. */ |
788 | ||
2a1ee410 | 789 | void |
7080f735 | 790 | dw2_output_indirect_constants (void) |
2a1ee410 | 791 | { |
d6d26764 JJ |
792 | if (indirect_pool) |
793 | splay_tree_foreach (indirect_pool, dw2_output_indirect_constant_1, NULL); | |
2a1ee410 RH |
794 | } |
795 | ||
b03e9863 EB |
796 | /* Like dw2_asm_output_addr_rtx, but encode the pointer as directed. |
797 | If PUBLIC is set and the encoding is DW_EH_PE_indirect, the indirect | |
798 | reference is shared across the entire application (or DSO). */ | |
e1f9550a | 799 | |
2a1ee410 | 800 | void |
b03e9863 | 801 | dw2_asm_output_encoded_addr_rtx (int encoding, rtx addr, bool public, |
e34d07f2 | 802 | const char *comment, ...) |
2a1ee410 RH |
803 | { |
804 | int size; | |
e34d07f2 | 805 | va_list ap; |
7080f735 | 806 | |
e34d07f2 | 807 | va_start (ap, comment); |
e1f9550a RH |
808 | |
809 | size = size_of_encoded_value (encoding); | |
2a1ee410 | 810 | |
099c8b17 RH |
811 | if (encoding == DW_EH_PE_aligned) |
812 | { | |
813 | assemble_align (POINTER_SIZE); | |
9f5cd0c5 RH |
814 | assemble_integer (addr, size, POINTER_SIZE, 1); |
815 | return; | |
099c8b17 RH |
816 | } |
817 | ||
3248917b RK |
818 | /* NULL is _always_ represented as a plain zero, as is 1 for Ada's |
819 | "all others". */ | |
820 | if (addr == const0_rtx || addr == const1_rtx) | |
c8af3574 | 821 | assemble_integer (addr, size, BITS_PER_UNIT, 1); |
e1f9550a | 822 | else |
2a1ee410 | 823 | { |
e1f9550a RH |
824 | restart: |
825 | /* Allow the target first crack at emitting this. Some of the | |
3a538a66 | 826 | special relocations require special directives instead of |
e1f9550a | 827 | just ".4byte" or whatever. */ |
2a1ee410 | 828 | #ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX |
e1f9550a RH |
829 | ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX (asm_out_file, encoding, size, |
830 | addr, done); | |
2a1ee410 RH |
831 | #endif |
832 | ||
e1f9550a RH |
833 | /* Indirection is used to get dynamic relocations out of a |
834 | read-only section. */ | |
835 | if (encoding & DW_EH_PE_indirect) | |
836 | { | |
837 | /* It is very tempting to use force_const_mem so that we share data | |
838 | with the normal constant pool. However, we've already emitted | |
839 | the constant pool for this function. Moreover, we'd like to | |
b03e9863 EB |
840 | share these constants across the entire unit of translation and |
841 | even, if possible, across the entire application (or DSO). */ | |
842 | addr = dw2_force_const_mem (addr, public); | |
e1f9550a RH |
843 | encoding &= ~DW_EH_PE_indirect; |
844 | goto restart; | |
845 | } | |
2a1ee410 | 846 | |
e1f9550a RH |
847 | switch (encoding & 0xF0) |
848 | { | |
849 | case DW_EH_PE_absptr: | |
301d03af | 850 | dw2_assemble_integer (size, addr); |
e1f9550a | 851 | break; |
2a1ee410 | 852 | |
e1f9550a | 853 | case DW_EH_PE_pcrel: |
ced3f397 | 854 | gcc_assert (GET_CODE (addr) == SYMBOL_REF); |
2a1ee410 | 855 | #ifdef ASM_OUTPUT_DWARF_PCREL |
e1f9550a | 856 | ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, XSTR (addr, 0)); |
2a1ee410 | 857 | #else |
301d03af | 858 | dw2_assemble_integer (size, gen_rtx_MINUS (Pmode, addr, pc_rtx)); |
2a1ee410 | 859 | #endif |
e1f9550a | 860 | break; |
2a1ee410 | 861 | |
e1f9550a | 862 | default: |
3a538a66 | 863 | /* Other encodings should have been handled by |
e1f9550a | 864 | ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX. */ |
ced3f397 | 865 | gcc_unreachable (); |
e1f9550a | 866 | } |
2a1ee410 RH |
867 | |
868 | #ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX | |
e1f9550a | 869 | done:; |
2a1ee410 | 870 | #endif |
e1f9550a RH |
871 | } |
872 | ||
873 | if (flag_debug_asm && comment) | |
874 | { | |
875 | fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
876 | vfprintf (asm_out_file, comment, ap); | |
877 | } | |
2a1ee410 | 878 | fputc ('\n', asm_out_file); |
e1f9550a | 879 | |
e34d07f2 | 880 | va_end (ap); |
2a1ee410 | 881 | } |
17211ab5 GK |
882 | |
883 | #include "gt-dwarf2asm.h" |