iCE40/yosys - [no description]

about summary refs log tree commit diff stats

diff options

author	github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>	2022-08-19 00:19:27 +0000
committer	github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>	2022-08-19 00:19:27 +0000
commit	029c2785e810fda0ccc5abbb6057af760f2fc6f3 (patch)
tree	81696fd98770e519aea96fe3a6e40bcc3b3a4360 /examples/igloo2/example.pdc
parent	f1c9399b66641b3e6a79acec7eeb4f57d31c9705 (diff)
download	yosys-029c2785e810fda0ccc5abbb6057af760f2fc6f3.tar.gz yosys-029c2785e810fda0ccc5abbb6057af760f2fc6f3.tar.bz2 yosys-029c2785e810fda0ccc5abbb6057af760f2fc6f3.zip

Bump version

Diffstat (limited to 'examples/igloo2/example.pdc')

0 files changed, 0 insertions, 0 deletions

d='n115' href='#n115'>115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458

/*  Kernel module help for PPC64.
    Copyright (C) 2001, 2003 Rusty Russell IBM Corporation.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
#include <linux/module.h>
#include <linux/elf.h>
#include <linux/moduleloader.h>
#include <linux/err.h>
#include <linux/vmalloc.h>
#include <linux/ftrace.h>
#include <linux/bug.h>
#include <asm/module.h>
#include <asm/firmware.h>
#include <asm/code-patching.h>
#include <linux/sort.h>

#include "setup.h"

/* FIXME: We don't do .init separately.  To do this, we'd need to have
   a separate r2 value in the init and core section, and stub between
   them, too.

   Using a magic allocator which places modules within 32MB solves
   this, and makes other things simpler.  Anton?
   --RR.  */
#if 0
#define DEBUGP printk
#else
#define DEBUGP(fmt , ...)
#endif

/* Like PPC32, we need little trampolines to do > 24-bit jumps (into
   the kernel itself).  But on PPC64, these need to be used for every
   jump, actually, to reset r2 (TOC+0x8000). */
struct ppc64_stub_entry
{
	/* 28 byte jump instruction sequence (7 instructions) */
	unsigned char jump[28];
	unsigned char unused[4];
	/* Data for the above code */
	struct ppc64_opd_entry opd;
};

/* We use a stub to fix up r2 (TOC ptr) and to jump to the (external)
   function which may be more than 24-bits away.  We could simply
   patch the new r2 value and function pointer into the stub, but it's
   significantly shorter to put these values at the end of the stub
   code, and patch the stub address (32-bits relative to the TOC ptr,
   r2) into the stub. */
static struct ppc64_stub_entry ppc64_stub =
{ .jump = {
	0x3d, 0x82, 0x00, 0x00, /* addis   r12,r2, <high> */
	0x39, 0x8c, 0x00, 0x00, /* addi    r12,r12, <low> */
	/* Save current r2 value in magic place on the stack. */
	0xf8, 0x41, 0x00, 0x28, /* std     r2,40(r1) */
	0xe9, 0x6c, 0x00, 0x20, /* ld      r11,32(r12) */
	0xe8, 0x4c, 0x00, 0x28, /* ld      r2,40(r12) */
	0x7d, 0x69, 0x03, 0xa6, /* mtctr   r11 */
	0x4e, 0x80, 0x04, 0x20  /* bctr */
} };

/* Count how many different 24-bit relocations (different symbol,
   different addend) */
static unsigned int count_relocs(const Elf64_Rela *rela, unsigned int num)
{
	unsigned int i, r_info, r_addend, _count_relocs;

	/* FIXME: Only count external ones --RR */
	_count_relocs = 0;
	r_info = 0;
	r_addend = 0;
	for (i = 0; i < num; i++)
		/* Only count 24-bit relocs, others don't need stubs */
		if (ELF64_R_TYPE(rela[i].r_info) == R_PPC_REL24 &&
		    (r_info != ELF64_R_SYM(rela[i].r_info) ||
		     r_addend != rela[i].r_addend)) {
			_count_relocs++;
			r_info = ELF64_R_SYM(rela[i].r_info);
			r_addend = rela[i].r_addend;
		}

	return _count_relocs;
}

static int relacmp(const void *_x, const void *_y)
{
	const Elf64_Rela *x, *y;

	y = (Elf64_Rela *)_x;
	x = (Elf64_Rela *)_y;

	/* Compare the entire r_info (as opposed to ELF64_R_SYM(r_info) only) to


context:
space:
mode: