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-rw-r--r--arch/mips/kernel/irixelf.c1326
1 files changed, 1326 insertions, 0 deletions
diff --git a/arch/mips/kernel/irixelf.c b/arch/mips/kernel/irixelf.c
new file mode 100644
index 000000000000..4af20cd91f9f
--- /dev/null
+++ b/arch/mips/kernel/irixelf.c
@@ -0,0 +1,1326 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * irixelf.c: Code to load IRIX ELF executables conforming to the MIPS ABI.
7 * Based off of work by Eric Youngdale.
8 *
9 * Copyright (C) 1993 - 1994 Eric Youngdale <ericy@cais.com>
10 * Copyright (C) 1996 - 2004 David S. Miller <dm@engr.sgi.com>
11 * Copyright (C) 2004 Steven J. Hill <sjhill@realitydiluted.com>
12 */
13#include <linux/module.h>
14#include <linux/fs.h>
15#include <linux/stat.h>
16#include <linux/sched.h>
17#include <linux/mm.h>
18#include <linux/mman.h>
19#include <linux/a.out.h>
20#include <linux/errno.h>
21#include <linux/init.h>
22#include <linux/signal.h>
23#include <linux/binfmts.h>
24#include <linux/string.h>
25#include <linux/file.h>
26#include <linux/fcntl.h>
27#include <linux/ptrace.h>
28#include <linux/slab.h>
29#include <linux/shm.h>
30#include <linux/personality.h>
31#include <linux/elfcore.h>
32#include <linux/smp_lock.h>
33
34#include <asm/uaccess.h>
35#include <asm/mipsregs.h>
36#include <asm/prctl.h>
37
38#define DLINFO_ITEMS 12
39
40#include <linux/elf.h>
41
42#undef DEBUG_ELF
43
44static int load_irix_binary(struct linux_binprm * bprm, struct pt_regs * regs);
45static int load_irix_library(struct file *);
46static int irix_core_dump(long signr, struct pt_regs * regs,
47 struct file *file);
48
49static struct linux_binfmt irix_format = {
50 NULL, THIS_MODULE, load_irix_binary, load_irix_library,
51 irix_core_dump, PAGE_SIZE
52};
53
54#ifndef elf_addr_t
55#define elf_addr_t unsigned long
56#endif
57
58#ifdef DEBUG_ELF
59/* Debugging routines. */
60static char *get_elf_p_type(Elf32_Word p_type)
61{
62 int i = (int) p_type;
63
64 switch(i) {
65 case PT_NULL: return("PT_NULL"); break;
66 case PT_LOAD: return("PT_LOAD"); break;
67 case PT_DYNAMIC: return("PT_DYNAMIC"); break;
68 case PT_INTERP: return("PT_INTERP"); break;
69 case PT_NOTE: return("PT_NOTE"); break;
70 case PT_SHLIB: return("PT_SHLIB"); break;
71 case PT_PHDR: return("PT_PHDR"); break;
72 case PT_LOPROC: return("PT_LOPROC/REGINFO"); break;
73 case PT_HIPROC: return("PT_HIPROC"); break;
74 default: return("PT_BOGUS"); break;
75 }
76}
77
78static void print_elfhdr(struct elfhdr *ehp)
79{
80 int i;
81
82 printk("ELFHDR: e_ident<");
83 for(i = 0; i < (EI_NIDENT - 1); i++) printk("%x ", ehp->e_ident[i]);
84 printk("%x>\n", ehp->e_ident[i]);
85 printk(" e_type[%04x] e_machine[%04x] e_version[%08lx]\n",
86 (unsigned short) ehp->e_type, (unsigned short) ehp->e_machine,
87 (unsigned long) ehp->e_version);
88 printk(" e_entry[%08lx] e_phoff[%08lx] e_shoff[%08lx] "
89 "e_flags[%08lx]\n",
90 (unsigned long) ehp->e_entry, (unsigned long) ehp->e_phoff,
91 (unsigned long) ehp->e_shoff, (unsigned long) ehp->e_flags);
92 printk(" e_ehsize[%04x] e_phentsize[%04x] e_phnum[%04x]\n",
93 (unsigned short) ehp->e_ehsize, (unsigned short) ehp->e_phentsize,
94 (unsigned short) ehp->e_phnum);
95 printk(" e_shentsize[%04x] e_shnum[%04x] e_shstrndx[%04x]\n",
96 (unsigned short) ehp->e_shentsize, (unsigned short) ehp->e_shnum,
97 (unsigned short) ehp->e_shstrndx);
98}
99
100static void print_phdr(int i, struct elf_phdr *ep)
101{
102 printk("PHDR[%d]: p_type[%s] p_offset[%08lx] p_vaddr[%08lx] "
103 "p_paddr[%08lx]\n", i, get_elf_p_type(ep->p_type),
104 (unsigned long) ep->p_offset, (unsigned long) ep->p_vaddr,
105 (unsigned long) ep->p_paddr);
106 printk(" p_filesz[%08lx] p_memsz[%08lx] p_flags[%08lx] "
107 "p_align[%08lx]\n", (unsigned long) ep->p_filesz,
108 (unsigned long) ep->p_memsz, (unsigned long) ep->p_flags,
109 (unsigned long) ep->p_align);
110}
111
112static void dump_phdrs(struct elf_phdr *ep, int pnum)
113{
114 int i;
115
116 for(i = 0; i < pnum; i++, ep++) {
117 if((ep->p_type == PT_LOAD) ||
118 (ep->p_type == PT_INTERP) ||
119 (ep->p_type == PT_PHDR))
120 print_phdr(i, ep);
121 }
122}
123#endif /* (DEBUG_ELF) */
124
125static void set_brk(unsigned long start, unsigned long end)
126{
127 start = PAGE_ALIGN(start);
128 end = PAGE_ALIGN(end);
129 if (end <= start)
130 return;
131 down_write(&current->mm->mmap_sem);
132 do_brk(start, end - start);
133 up_write(&current->mm->mmap_sem);
134}
135
136
137/* We need to explicitly zero any fractional pages
138 * after the data section (i.e. bss). This would
139 * contain the junk from the file that should not
140 * be in memory.
141 */
142static void padzero(unsigned long elf_bss)
143{
144 unsigned long nbyte;
145
146 nbyte = elf_bss & (PAGE_SIZE-1);
147 if (nbyte) {
148 nbyte = PAGE_SIZE - nbyte;
149 clear_user((void *) elf_bss, nbyte);
150 }
151}
152
153unsigned long * create_irix_tables(char * p, int argc, int envc,
154 struct elfhdr * exec, unsigned int load_addr,
155 unsigned int interp_load_addr,
156 struct pt_regs *regs, struct elf_phdr *ephdr)
157{
158 elf_addr_t *argv;
159 elf_addr_t *envp;
160 elf_addr_t *sp, *csp;
161
162#ifdef DEBUG_ELF
163 printk("create_irix_tables: p[%p] argc[%d] envc[%d] "
164 "load_addr[%08x] interp_load_addr[%08x]\n",
165 p, argc, envc, load_addr, interp_load_addr);
166#endif
167 sp = (elf_addr_t *) (~15UL & (unsigned long) p);
168 csp = sp;
169 csp -= exec ? DLINFO_ITEMS*2 : 2;
170 csp -= envc+1;
171 csp -= argc+1;
172 csp -= 1; /* argc itself */
173 if ((unsigned long)csp & 15UL) {
174 sp -= (16UL - ((unsigned long)csp & 15UL)) / sizeof(*sp);
175 }
176
177 /*
178 * Put the ELF interpreter info on the stack
179 */
180#define NEW_AUX_ENT(nr, id, val) \
181 __put_user ((id), sp+(nr*2)); \
182 __put_user ((val), sp+(nr*2+1)); \
183
184 sp -= 2;
185 NEW_AUX_ENT(0, AT_NULL, 0);
186
187 if(exec) {
188 sp -= 11*2;
189
190 NEW_AUX_ENT (0, AT_PHDR, load_addr + exec->e_phoff);
191 NEW_AUX_ENT (1, AT_PHENT, sizeof (struct elf_phdr));
192 NEW_AUX_ENT (2, AT_PHNUM, exec->e_phnum);
193 NEW_AUX_ENT (3, AT_PAGESZ, ELF_EXEC_PAGESIZE);
194 NEW_AUX_ENT (4, AT_BASE, interp_load_addr);
195 NEW_AUX_ENT (5, AT_FLAGS, 0);
196 NEW_AUX_ENT (6, AT_ENTRY, (elf_addr_t) exec->e_entry);
197 NEW_AUX_ENT (7, AT_UID, (elf_addr_t) current->uid);
198 NEW_AUX_ENT (8, AT_EUID, (elf_addr_t) current->euid);
199 NEW_AUX_ENT (9, AT_GID, (elf_addr_t) current->gid);
200 NEW_AUX_ENT (10, AT_EGID, (elf_addr_t) current->egid);
201 }
202#undef NEW_AUX_ENT
203
204 sp -= envc+1;
205 envp = sp;
206 sp -= argc+1;
207 argv = sp;
208
209 __put_user((elf_addr_t)argc,--sp);
210 current->mm->arg_start = (unsigned long) p;
211 while (argc-->0) {
212 __put_user((unsigned long)p,argv++);
213 p += strlen_user(p);
214 }
215 __put_user((unsigned long) NULL, argv);
216 current->mm->arg_end = current->mm->env_start = (unsigned long) p;
217 while (envc-->0) {
218 __put_user((unsigned long)p,envp++);
219 p += strlen_user(p);
220 }
221 __put_user((unsigned long) NULL, envp);
222 current->mm->env_end = (unsigned long) p;
223 return sp;
224}
225
226
227/* This is much more generalized than the library routine read function,
228 * so we keep this separate. Technically the library read function
229 * is only provided so that we can read a.out libraries that have
230 * an ELF header.
231 */
232static unsigned int load_irix_interp(struct elfhdr * interp_elf_ex,
233 struct file * interpreter,
234 unsigned int *interp_load_addr)
235{
236 struct elf_phdr *elf_phdata = NULL;
237 struct elf_phdr *eppnt;
238 unsigned int len;
239 unsigned int load_addr;
240 int elf_bss;
241 int retval;
242 unsigned int last_bss;
243 int error;
244 int i;
245 unsigned int k;
246
247 elf_bss = 0;
248 last_bss = 0;
249 error = load_addr = 0;
250
251#ifdef DEBUG_ELF
252 print_elfhdr(interp_elf_ex);
253#endif
254
255 /* First of all, some simple consistency checks */
256 if ((interp_elf_ex->e_type != ET_EXEC &&
257 interp_elf_ex->e_type != ET_DYN) ||
258 !irix_elf_check_arch(interp_elf_ex) ||
259 !interpreter->f_op->mmap) {
260 printk("IRIX interp has bad e_type %d\n", interp_elf_ex->e_type);
261 return 0xffffffff;
262 }
263
264 /* Now read in all of the header information */
265 if(sizeof(struct elf_phdr) * interp_elf_ex->e_phnum > PAGE_SIZE) {
266 printk("IRIX interp header bigger than a page (%d)\n",
267 (sizeof(struct elf_phdr) * interp_elf_ex->e_phnum));
268 return 0xffffffff;
269 }
270
271 elf_phdata = kmalloc(sizeof(struct elf_phdr) * interp_elf_ex->e_phnum,
272 GFP_KERNEL);
273
274 if(!elf_phdata) {
275 printk("Cannot kmalloc phdata for IRIX interp.\n");
276 return 0xffffffff;
277 }
278
279 /* If the size of this structure has changed, then punt, since
280 * we will be doing the wrong thing.
281 */
282 if(interp_elf_ex->e_phentsize != 32) {
283 printk("IRIX interp e_phentsize == %d != 32 ",
284 interp_elf_ex->e_phentsize);
285 kfree(elf_phdata);
286 return 0xffffffff;
287 }
288
289 retval = kernel_read(interpreter, interp_elf_ex->e_phoff,
290 (char *) elf_phdata,
291 sizeof(struct elf_phdr) * interp_elf_ex->e_phnum);
292
293#ifdef DEBUG_ELF
294 dump_phdrs(elf_phdata, interp_elf_ex->e_phnum);
295#endif
296
297 eppnt = elf_phdata;
298 for(i=0; i<interp_elf_ex->e_phnum; i++, eppnt++) {
299 if(eppnt->p_type == PT_LOAD) {
300 int elf_type = MAP_PRIVATE | MAP_DENYWRITE;
301 int elf_prot = 0;
302 unsigned long vaddr = 0;
303 if (eppnt->p_flags & PF_R) elf_prot = PROT_READ;
304 if (eppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
305 if (eppnt->p_flags & PF_X) elf_prot |= PROT_EXEC;
306 elf_type |= MAP_FIXED;
307 vaddr = eppnt->p_vaddr;
308
309#ifdef DEBUG_ELF
310 printk("INTERP do_mmap(%p, %08lx, %08lx, %08lx, %08lx, %08lx) ",
311 interpreter, vaddr,
312 (unsigned long) (eppnt->p_filesz + (eppnt->p_vaddr & 0xfff)),
313 (unsigned long) elf_prot, (unsigned long) elf_type,
314 (unsigned long) (eppnt->p_offset & 0xfffff000));
315#endif
316 down_write(&current->mm->mmap_sem);
317 error = do_mmap(interpreter, vaddr,
318 eppnt->p_filesz + (eppnt->p_vaddr & 0xfff),
319 elf_prot, elf_type,
320 eppnt->p_offset & 0xfffff000);
321 up_write(&current->mm->mmap_sem);
322
323 if(error < 0 && error > -1024) {
324 printk("Aieee IRIX interp mmap error=%d\n", error);
325 break; /* Real error */
326 }
327#ifdef DEBUG_ELF
328 printk("error=%08lx ", (unsigned long) error);
329#endif
330 if(!load_addr && interp_elf_ex->e_type == ET_DYN) {
331 load_addr = error;
332#ifdef DEBUG_ELF
333 printk("load_addr = error ");
334#endif
335 }
336
337 /* Find the end of the file mapping for this phdr, and keep
338 * track of the largest address we see for this.
339 */
340 k = eppnt->p_vaddr + eppnt->p_filesz;
341 if(k > elf_bss) elf_bss = k;
342
343 /* Do the same thing for the memory mapping - between
344 * elf_bss and last_bss is the bss section.
345 */
346 k = eppnt->p_memsz + eppnt->p_vaddr;
347 if(k > last_bss) last_bss = k;
348#ifdef DEBUG_ELF
349 printk("\n");
350#endif
351 }
352 }
353
354 /* Now use mmap to map the library into memory. */
355 if(error < 0 && error > -1024) {
356#ifdef DEBUG_ELF
357 printk("got error %d\n", error);
358#endif
359 kfree(elf_phdata);
360 return 0xffffffff;
361 }
362
363 /* Now fill out the bss section. First pad the last page up
364 * to the page boundary, and then perform a mmap to make sure
365 * that there are zero-mapped pages up to and including the
366 * last bss page.
367 */
368#ifdef DEBUG_ELF
369 printk("padzero(%08lx) ", (unsigned long) (elf_bss));
370#endif
371 padzero(elf_bss);
372 len = (elf_bss + 0xfff) & 0xfffff000; /* What we have mapped so far */
373
374#ifdef DEBUG_ELF
375 printk("last_bss[%08lx] len[%08lx]\n", (unsigned long) last_bss,
376 (unsigned long) len);
377#endif
378
379 /* Map the last of the bss segment */
380 if (last_bss > len) {
381 down_write(&current->mm->mmap_sem);
382 do_brk(len, (last_bss - len));
383 up_write(&current->mm->mmap_sem);
384 }
385 kfree(elf_phdata);
386
387 *interp_load_addr = load_addr;
388 return ((unsigned int) interp_elf_ex->e_entry);
389}
390
391/* Check sanity of IRIX elf executable header. */
392static int verify_binary(struct elfhdr *ehp, struct linux_binprm *bprm)
393{
394 if (memcmp(ehp->e_ident, ELFMAG, SELFMAG) != 0)
395 return -ENOEXEC;
396
397 /* First of all, some simple consistency checks */
398 if((ehp->e_type != ET_EXEC && ehp->e_type != ET_DYN) ||
399 !irix_elf_check_arch(ehp) || !bprm->file->f_op->mmap) {
400 return -ENOEXEC;
401 }
402
403 /* Only support MIPS ARCH2 or greater IRIX binaries for now. */
404 if(!(ehp->e_flags & EF_MIPS_ARCH) && !(ehp->e_flags & 0x04)) {
405 return -ENOEXEC;
406 }
407
408 /* XXX Don't support N32 or 64bit binaries yet because they can
409 * XXX and do execute 64 bit instructions and expect all registers
410 * XXX to be 64 bit as well. We need to make the kernel save
411 * XXX all registers as 64bits on cpu's capable of this at
412 * XXX exception time plus frob the XTLB exception vector.
413 */
414 if((ehp->e_flags & 0x20)) {
415 return -ENOEXEC;
416 }
417
418 return 0; /* It's ok. */
419}
420
421#define IRIX_INTERP_PREFIX "/usr/gnemul/irix"
422
423/* Look for an IRIX ELF interpreter. */
424static inline int look_for_irix_interpreter(char **name,
425 struct file **interpreter,
426 struct elfhdr *interp_elf_ex,
427 struct elf_phdr *epp,
428 struct linux_binprm *bprm, int pnum)
429{
430 int i;
431 int retval = -EINVAL;
432 struct file *file = NULL;
433
434 *name = NULL;
435 for(i = 0; i < pnum; i++, epp++) {
436 if (epp->p_type != PT_INTERP)
437 continue;
438
439 /* It is illegal to have two interpreters for one executable. */
440 if (*name != NULL)
441 goto out;
442
443 *name = kmalloc((epp->p_filesz + strlen(IRIX_INTERP_PREFIX)),
444 GFP_KERNEL);
445 if (!*name)
446 return -ENOMEM;
447
448 strcpy(*name, IRIX_INTERP_PREFIX);
449 retval = kernel_read(bprm->file, epp->p_offset, (*name + 16),
450 epp->p_filesz);
451 if (retval < 0)
452 goto out;
453
454 file = open_exec(*name);
455 if (IS_ERR(file)) {
456 retval = PTR_ERR(file);
457 goto out;
458 }
459 retval = kernel_read(file, 0, bprm->buf, 128);
460 if (retval < 0)
461 goto dput_and_out;
462
463 *interp_elf_ex = *(struct elfhdr *) bprm->buf;
464 }
465 *interpreter = file;
466 return 0;
467
468dput_and_out:
469 fput(file);
470out:
471 kfree(*name);
472 return retval;
473}
474
475static inline int verify_irix_interpreter(struct elfhdr *ihp)
476{
477 if (memcmp(ihp->e_ident, ELFMAG, SELFMAG) != 0)
478 return -ELIBBAD;
479 return 0;
480}
481
482#define EXEC_MAP_FLAGS (MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE)
483
484static inline void map_executable(struct file *fp, struct elf_phdr *epp, int pnum,
485 unsigned int *estack, unsigned int *laddr,
486 unsigned int *scode, unsigned int *ebss,
487 unsigned int *ecode, unsigned int *edata,
488 unsigned int *ebrk)
489{
490 unsigned int tmp;
491 int i, prot;
492
493 for(i = 0; i < pnum; i++, epp++) {
494 if(epp->p_type != PT_LOAD)
495 continue;
496
497 /* Map it. */
498 prot = (epp->p_flags & PF_R) ? PROT_READ : 0;
499 prot |= (epp->p_flags & PF_W) ? PROT_WRITE : 0;
500 prot |= (epp->p_flags & PF_X) ? PROT_EXEC : 0;
501 down_write(&current->mm->mmap_sem);
502 (void) do_mmap(fp, (epp->p_vaddr & 0xfffff000),
503 (epp->p_filesz + (epp->p_vaddr & 0xfff)),
504 prot, EXEC_MAP_FLAGS,
505 (epp->p_offset & 0xfffff000));
506 up_write(&current->mm->mmap_sem);
507
508 /* Fixup location tracking vars. */
509 if((epp->p_vaddr & 0xfffff000) < *estack)
510 *estack = (epp->p_vaddr & 0xfffff000);
511 if(!*laddr)
512 *laddr = epp->p_vaddr - epp->p_offset;
513 if(epp->p_vaddr < *scode)
514 *scode = epp->p_vaddr;
515
516 tmp = epp->p_vaddr + epp->p_filesz;
517 if(tmp > *ebss)
518 *ebss = tmp;
519 if((epp->p_flags & PF_X) && *ecode < tmp)
520 *ecode = tmp;
521 if(*edata < tmp)
522 *edata = tmp;
523
524 tmp = epp->p_vaddr + epp->p_memsz;
525 if(tmp > *ebrk)
526 *ebrk = tmp;
527 }
528
529}
530
531static inline int map_interpreter(struct elf_phdr *epp, struct elfhdr *ihp,
532 struct file *interp, unsigned int *iladdr,
533 int pnum, mm_segment_t old_fs,
534 unsigned int *eentry)
535{
536 int i;
537
538 *eentry = 0xffffffff;
539 for(i = 0; i < pnum; i++, epp++) {
540 if(epp->p_type != PT_INTERP)
541 continue;
542
543 /* We should have fielded this error elsewhere... */
544 if(*eentry != 0xffffffff)
545 return -1;
546
547 set_fs(old_fs);
548 *eentry = load_irix_interp(ihp, interp, iladdr);
549 old_fs = get_fs();
550 set_fs(get_ds());
551
552 fput(interp);
553
554 if (*eentry == 0xffffffff)
555 return -1;
556 }
557 return 0;
558}
559
560/*
561 * IRIX maps a page at 0x200000 that holds information about the
562 * process and the system, here we map the page and fill the
563 * structure
564 */
565void irix_map_prda_page (void)
566{
567 unsigned long v;
568 struct prda *pp;
569
570 down_write(&current->mm->mmap_sem);
571 v = do_brk (PRDA_ADDRESS, PAGE_SIZE);
572 up_write(&current->mm->mmap_sem);
573
574 if (v < 0)
575 return;
576
577 pp = (struct prda *) v;
578 pp->prda_sys.t_pid = current->pid;
579 pp->prda_sys.t_prid = read_c0_prid();
580 pp->prda_sys.t_rpid = current->pid;
581
582 /* We leave the rest set to zero */
583}
584
585
586
587/* These are the functions used to load ELF style executables and shared
588 * libraries. There is no binary dependent code anywhere else.
589 */
590static int load_irix_binary(struct linux_binprm * bprm, struct pt_regs * regs)
591{
592 struct elfhdr elf_ex, interp_elf_ex;
593 struct file *interpreter;
594 struct elf_phdr *elf_phdata, *elf_ihdr, *elf_ephdr;
595 unsigned int load_addr, elf_bss, elf_brk;
596 unsigned int elf_entry, interp_load_addr = 0;
597 unsigned int start_code, end_code, end_data, elf_stack;
598 int retval, has_interp, has_ephdr, size, i;
599 char *elf_interpreter;
600 mm_segment_t old_fs;
601
602 load_addr = 0;
603 has_interp = has_ephdr = 0;
604 elf_ihdr = elf_ephdr = 0;
605 elf_ex = *((struct elfhdr *) bprm->buf);
606 retval = -ENOEXEC;
607
608 if (verify_binary(&elf_ex, bprm))
609 goto out;
610
611#ifdef DEBUG_ELF
612 print_elfhdr(&elf_ex);
613#endif
614
615 /* Now read in all of the header information */
616 size = elf_ex.e_phentsize * elf_ex.e_phnum;
617 if (size > 65536)
618 goto out;
619 elf_phdata = kmalloc(size, GFP_KERNEL);
620 if (elf_phdata == NULL) {
621 retval = -ENOMEM;
622 goto out;
623 }
624
625 retval = kernel_read(bprm->file, elf_ex.e_phoff, (char *)elf_phdata, size);
626
627 if (retval < 0)
628 goto out_free_ph;
629
630#ifdef DEBUG_ELF
631 dump_phdrs(elf_phdata, elf_ex.e_phnum);
632#endif
633
634 /* Set some things for later. */
635 for(i = 0; i < elf_ex.e_phnum; i++) {
636 switch(elf_phdata[i].p_type) {
637 case PT_INTERP:
638 has_interp = 1;
639 elf_ihdr = &elf_phdata[i];
640 break;
641 case PT_PHDR:
642 has_ephdr = 1;
643 elf_ephdr = &elf_phdata[i];
644 break;
645 };
646 }
647#ifdef DEBUG_ELF
648 printk("\n");
649#endif
650
651 elf_bss = 0;
652 elf_brk = 0;
653
654 elf_stack = 0xffffffff;
655 elf_interpreter = NULL;
656 start_code = 0xffffffff;
657 end_code = 0;
658 end_data = 0;
659
660 retval = look_for_irix_interpreter(&elf_interpreter,
661 &interpreter,
662 &interp_elf_ex, elf_phdata, bprm,
663 elf_ex.e_phnum);
664 if (retval)
665 goto out_free_file;
666
667 if (elf_interpreter) {
668 retval = verify_irix_interpreter(&interp_elf_ex);
669 if(retval)
670 goto out_free_interp;
671 }
672
673 /* OK, we are done with that, now set up the arg stuff,
674 * and then start this sucker up.
675 */
676 retval = -E2BIG;
677 if (!bprm->sh_bang && !bprm->p)
678 goto out_free_interp;
679
680 /* Flush all traces of the currently running executable */
681 retval = flush_old_exec(bprm);
682 if (retval)
683 goto out_free_dentry;
684
685 /* OK, This is the point of no return */
686 current->mm->end_data = 0;
687 current->mm->end_code = 0;
688 current->mm->mmap = NULL;
689 current->flags &= ~PF_FORKNOEXEC;
690 elf_entry = (unsigned int) elf_ex.e_entry;
691
692 /* Do this so that we can load the interpreter, if need be. We will
693 * change some of these later.
694 */
695 set_mm_counter(current->mm, rss, 0);
696 setup_arg_pages(bprm, STACK_TOP, EXSTACK_DEFAULT);
697 current->mm->start_stack = bprm->p;
698
699 /* At this point, we assume that the image should be loaded at
700 * fixed address, not at a variable address.
701 */
702 old_fs = get_fs();
703 set_fs(get_ds());
704
705 map_executable(bprm->file, elf_phdata, elf_ex.e_phnum, &elf_stack,
706 &load_addr, &start_code, &elf_bss, &end_code,
707 &end_data, &elf_brk);
708
709 if(elf_interpreter) {
710 retval = map_interpreter(elf_phdata, &interp_elf_ex,
711 interpreter, &interp_load_addr,
712 elf_ex.e_phnum, old_fs, &elf_entry);
713 kfree(elf_interpreter);
714 if(retval) {
715 set_fs(old_fs);
716 printk("Unable to load IRIX ELF interpreter\n");
717 send_sig(SIGSEGV, current, 0);
718 retval = 0;
719 goto out_free_file;
720 }
721 }
722
723 set_fs(old_fs);
724
725 kfree(elf_phdata);
726 set_personality(PER_IRIX32);
727 set_binfmt(&irix_format);
728 compute_creds(bprm);
729 current->flags &= ~PF_FORKNOEXEC;
730 bprm->p = (unsigned long)
731 create_irix_tables((char *)bprm->p, bprm->argc, bprm->envc,
732 (elf_interpreter ? &elf_ex : NULL),
733 load_addr, interp_load_addr, regs, elf_ephdr);
734 current->mm->start_brk = current->mm->brk = elf_brk;
735 current->mm->end_code = end_code;
736 current->mm->start_code = start_code;
737 current->mm->end_data = end_data;
738 current->mm->start_stack = bprm->p;
739
740 /* Calling set_brk effectively mmaps the pages that we need for the
741 * bss and break sections.
742 */
743 set_brk(elf_bss, elf_brk);
744
745 /*
746 * IRIX maps a page at 0x200000 which holds some system
747 * information. Programs depend on this.
748 */
749 irix_map_prda_page ();
750
751 padzero(elf_bss);
752
753#ifdef DEBUG_ELF
754 printk("(start_brk) %lx\n" , (long) current->mm->start_brk);
755 printk("(end_code) %lx\n" , (long) current->mm->end_code);
756 printk("(start_code) %lx\n" , (long) current->mm->start_code);
757 printk("(end_data) %lx\n" , (long) current->mm->end_data);
758 printk("(start_stack) %lx\n" , (long) current->mm->start_stack);
759 printk("(brk) %lx\n" , (long) current->mm->brk);
760#endif
761
762#if 0 /* XXX No fucking way dude... */
763 /* Why this, you ask??? Well SVr4 maps page 0 as read-only,
764 * and some applications "depend" upon this behavior.
765 * Since we do not have the power to recompile these, we
766 * emulate the SVr4 behavior. Sigh.
767 */
768 down_write(&current->mm->mmap_sem);
769 (void) do_mmap(NULL, 0, 4096, PROT_READ | PROT_EXEC,
770 MAP_FIXED | MAP_PRIVATE, 0);
771 up_write(&current->mm->mmap_sem);
772#endif
773
774 start_thread(regs, elf_entry, bprm->p);
775 if (current->ptrace & PT_PTRACED)
776 send_sig(SIGTRAP, current, 0);
777 return 0;
778out:
779 return retval;
780
781out_free_dentry:
782 allow_write_access(interpreter);
783 fput(interpreter);
784out_free_interp:
785 if (elf_interpreter)
786 kfree(elf_interpreter);
787out_free_file:
788out_free_ph:
789 kfree (elf_phdata);
790 goto out;
791}
792
793/* This is really simpleminded and specialized - we are loading an
794 * a.out library that is given an ELF header.
795 */
796static int load_irix_library(struct file *file)
797{
798 struct elfhdr elf_ex;
799 struct elf_phdr *elf_phdata = NULL;
800 unsigned int len = 0;
801 int elf_bss = 0;
802 int retval;
803 unsigned int bss;
804 int error;
805 int i,j, k;
806
807 error = kernel_read(file, 0, (char *) &elf_ex, sizeof(elf_ex));
808 if (error != sizeof(elf_ex))
809 return -ENOEXEC;
810
811 if (memcmp(elf_ex.e_ident, ELFMAG, SELFMAG) != 0)
812 return -ENOEXEC;
813
814 /* First of all, some simple consistency checks. */
815 if(elf_ex.e_type != ET_EXEC || elf_ex.e_phnum > 2 ||
816 !irix_elf_check_arch(&elf_ex) || !file->f_op->mmap)
817 return -ENOEXEC;
818
819 /* Now read in all of the header information. */
820 if(sizeof(struct elf_phdr) * elf_ex.e_phnum > PAGE_SIZE)
821 return -ENOEXEC;
822
823 elf_phdata = kmalloc(sizeof(struct elf_phdr) * elf_ex.e_phnum, GFP_KERNEL);
824 if (elf_phdata == NULL)
825 return -ENOMEM;
826
827 retval = kernel_read(file, elf_ex.e_phoff, (char *) elf_phdata,
828 sizeof(struct elf_phdr) * elf_ex.e_phnum);
829
830 j = 0;
831 for(i=0; i<elf_ex.e_phnum; i++)
832 if((elf_phdata + i)->p_type == PT_LOAD) j++;
833
834 if(j != 1) {
835 kfree(elf_phdata);
836 return -ENOEXEC;
837 }
838
839 while(elf_phdata->p_type != PT_LOAD) elf_phdata++;
840
841 /* Now use mmap to map the library into memory. */
842 down_write(&current->mm->mmap_sem);
843 error = do_mmap(file,
844 elf_phdata->p_vaddr & 0xfffff000,
845 elf_phdata->p_filesz + (elf_phdata->p_vaddr & 0xfff),
846 PROT_READ | PROT_WRITE | PROT_EXEC,
847 MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE,
848 elf_phdata->p_offset & 0xfffff000);
849 up_write(&current->mm->mmap_sem);
850
851 k = elf_phdata->p_vaddr + elf_phdata->p_filesz;
852 if (k > elf_bss) elf_bss = k;
853
854 if (error != (elf_phdata->p_vaddr & 0xfffff000)) {
855 kfree(elf_phdata);
856 return error;
857 }
858
859 padzero(elf_bss);
860
861 len = (elf_phdata->p_filesz + elf_phdata->p_vaddr+ 0xfff) & 0xfffff000;
862 bss = elf_phdata->p_memsz + elf_phdata->p_vaddr;
863 if (bss > len) {
864 down_write(&current->mm->mmap_sem);
865 do_brk(len, bss-len);
866 up_write(&current->mm->mmap_sem);
867 }
868 kfree(elf_phdata);
869 return 0;
870}
871
872/* Called through irix_syssgi() to map an elf image given an FD,
873 * a phdr ptr USER_PHDRP in userspace, and a count CNT telling how many
874 * phdrs there are in the USER_PHDRP array. We return the vaddr the
875 * first phdr was successfully mapped to.
876 */
877unsigned long irix_mapelf(int fd, struct elf_phdr *user_phdrp, int cnt)
878{
879 struct elf_phdr *hp;
880 struct file *filp;
881 int i, retval;
882
883#ifdef DEBUG_ELF
884 printk("irix_mapelf: fd[%d] user_phdrp[%p] cnt[%d]\n",
885 fd, user_phdrp, cnt);
886#endif
887
888 /* First get the verification out of the way. */
889 hp = user_phdrp;
890 if (!access_ok(VERIFY_READ, hp, (sizeof(struct elf_phdr) * cnt))) {
891#ifdef DEBUG_ELF
892 printk("irix_mapelf: access_ok fails!\n");
893#endif
894 return -EFAULT;
895 }
896
897#ifdef DEBUG_ELF
898 dump_phdrs(user_phdrp, cnt);
899#endif
900
901 for(i = 0; i < cnt; i++, hp++)
902 if(hp->p_type != PT_LOAD) {
903 printk("irix_mapelf: One section is not PT_LOAD!\n");
904 return -ENOEXEC;
905 }
906
907 filp = fget(fd);
908 if (!filp)
909 return -EACCES;
910 if(!filp->f_op) {
911 printk("irix_mapelf: Bogon filp!\n");
912 fput(filp);
913 return -EACCES;
914 }
915
916 hp = user_phdrp;
917 for(i = 0; i < cnt; i++, hp++) {
918 int prot;
919
920 prot = (hp->p_flags & PF_R) ? PROT_READ : 0;
921 prot |= (hp->p_flags & PF_W) ? PROT_WRITE : 0;
922 prot |= (hp->p_flags & PF_X) ? PROT_EXEC : 0;
923 down_write(&current->mm->mmap_sem);
924 retval = do_mmap(filp, (hp->p_vaddr & 0xfffff000),
925 (hp->p_filesz + (hp->p_vaddr & 0xfff)),
926 prot, (MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE),
927 (hp->p_offset & 0xfffff000));
928 up_write(&current->mm->mmap_sem);
929
930 if(retval != (hp->p_vaddr & 0xfffff000)) {
931 printk("irix_mapelf: do_mmap fails with %d!\n", retval);
932 fput(filp);
933 return retval;
934 }
935 }
936
937#ifdef DEBUG_ELF
938 printk("irix_mapelf: Success, returning %08lx\n",
939 (unsigned long) user_phdrp->p_vaddr);
940#endif
941 fput(filp);
942 return user_phdrp->p_vaddr;
943}
944
945/*
946 * ELF core dumper
947 *
948 * Modelled on fs/exec.c:aout_core_dump()
949 * Jeremy Fitzhardinge <jeremy@sw.oz.au>
950 */
951
952/* These are the only things you should do on a core-file: use only these
953 * functions to write out all the necessary info.
954 */
955static int dump_write(struct file *file, const void *addr, int nr)
956{
957 return file->f_op->write(file, addr, nr, &file->f_pos) == nr;
958}
959
960static int dump_seek(struct file *file, off_t off)
961{
962 if (file->f_op->llseek) {
963 if (file->f_op->llseek(file, off, 0) != off)
964 return 0;
965 } else
966 file->f_pos = off;
967 return 1;
968}
969
970/* Decide whether a segment is worth dumping; default is yes to be
971 * sure (missing info is worse than too much; etc).
972 * Personally I'd include everything, and use the coredump limit...
973 *
974 * I think we should skip something. But I am not sure how. H.J.
975 */
976static inline int maydump(struct vm_area_struct *vma)
977{
978 if (!(vma->vm_flags & (VM_READ|VM_WRITE|VM_EXEC)))
979 return 0;
980#if 1
981 if (vma->vm_flags & (VM_WRITE|VM_GROWSUP|VM_GROWSDOWN))
982 return 1;
983 if (vma->vm_flags & (VM_READ|VM_EXEC|VM_EXECUTABLE|VM_SHARED))
984 return 0;
985#endif
986 return 1;
987}
988
989#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
990
991/* An ELF note in memory. */
992struct memelfnote
993{
994 const char *name;
995 int type;
996 unsigned int datasz;
997 void *data;
998};
999
1000static int notesize(struct memelfnote *en)
1001{
1002 int sz;
1003
1004 sz = sizeof(struct elf_note);
1005 sz += roundup(strlen(en->name), 4);
1006 sz += roundup(en->datasz, 4);
1007
1008 return sz;
1009}
1010
1011/* #define DEBUG */
1012
1013#define DUMP_WRITE(addr, nr) \
1014 if (!dump_write(file, (addr), (nr))) \
1015 goto end_coredump;
1016#define DUMP_SEEK(off) \
1017 if (!dump_seek(file, (off))) \
1018 goto end_coredump;
1019
1020static int writenote(struct memelfnote *men, struct file *file)
1021{
1022 struct elf_note en;
1023
1024 en.n_namesz = strlen(men->name);
1025 en.n_descsz = men->datasz;
1026 en.n_type = men->type;
1027
1028 DUMP_WRITE(&en, sizeof(en));
1029 DUMP_WRITE(men->name, en.n_namesz);
1030 /* XXX - cast from long long to long to avoid need for libgcc.a */
1031 DUMP_SEEK(roundup((unsigned long)file->f_pos, 4)); /* XXX */
1032 DUMP_WRITE(men->data, men->datasz);
1033 DUMP_SEEK(roundup((unsigned long)file->f_pos, 4)); /* XXX */
1034
1035 return 1;
1036
1037end_coredump:
1038 return 0;
1039}
1040#undef DUMP_WRITE
1041#undef DUMP_SEEK
1042
1043#define DUMP_WRITE(addr, nr) \
1044 if (!dump_write(file, (addr), (nr))) \
1045 goto end_coredump;
1046#define DUMP_SEEK(off) \
1047 if (!dump_seek(file, (off))) \
1048 goto end_coredump;
1049
1050/* Actual dumper.
1051 *
1052 * This is a two-pass process; first we find the offsets of the bits,
1053 * and then they are actually written out. If we run out of core limit
1054 * we just truncate.
1055 */
1056static int irix_core_dump(long signr, struct pt_regs * regs, struct file *file)
1057{
1058 int has_dumped = 0;
1059 mm_segment_t fs;
1060 int segs;
1061 int i;
1062 size_t size;
1063 struct vm_area_struct *vma;
1064 struct elfhdr elf;
1065 off_t offset = 0, dataoff;
1066 int limit = current->signal->rlim[RLIMIT_CORE].rlim_cur;
1067 int numnote = 4;
1068 struct memelfnote notes[4];
1069 struct elf_prstatus prstatus; /* NT_PRSTATUS */
1070 elf_fpregset_t fpu; /* NT_PRFPREG */
1071 struct elf_prpsinfo psinfo; /* NT_PRPSINFO */
1072
1073 /* Count what's needed to dump, up to the limit of coredump size. */
1074 segs = 0;
1075 size = 0;
1076 for(vma = current->mm->mmap; vma != NULL; vma = vma->vm_next) {
1077 if (maydump(vma))
1078 {
1079 int sz = vma->vm_end-vma->vm_start;
1080
1081 if (size+sz >= limit)
1082 break;
1083 else
1084 size += sz;
1085 }
1086
1087 segs++;
1088 }
1089#ifdef DEBUG
1090 printk("irix_core_dump: %d segs taking %d bytes\n", segs, size);
1091#endif
1092
1093 /* Set up header. */
1094 memcpy(elf.e_ident, ELFMAG, SELFMAG);
1095 elf.e_ident[EI_CLASS] = ELFCLASS32;
1096 elf.e_ident[EI_DATA] = ELFDATA2LSB;
1097 elf.e_ident[EI_VERSION] = EV_CURRENT;
1098 elf.e_ident[EI_OSABI] = ELF_OSABI;
1099 memset(elf.e_ident+EI_PAD, 0, EI_NIDENT-EI_PAD);
1100
1101 elf.e_type = ET_CORE;
1102 elf.e_machine = ELF_ARCH;
1103 elf.e_version = EV_CURRENT;
1104 elf.e_entry = 0;
1105 elf.e_phoff = sizeof(elf);
1106 elf.e_shoff = 0;
1107 elf.e_flags = 0;
1108 elf.e_ehsize = sizeof(elf);
1109 elf.e_phentsize = sizeof(struct elf_phdr);
1110 elf.e_phnum = segs+1; /* Include notes. */
1111 elf.e_shentsize = 0;
1112 elf.e_shnum = 0;
1113 elf.e_shstrndx = 0;
1114
1115 fs = get_fs();
1116 set_fs(KERNEL_DS);
1117
1118 has_dumped = 1;
1119 current->flags |= PF_DUMPCORE;
1120
1121 DUMP_WRITE(&elf, sizeof(elf));
1122 offset += sizeof(elf); /* Elf header. */
1123 offset += (segs+1) * sizeof(struct elf_phdr); /* Program headers. */
1124
1125 /* Set up the notes in similar form to SVR4 core dumps made
1126 * with info from their /proc.
1127 */
1128 memset(&psinfo, 0, sizeof(psinfo));
1129 memset(&prstatus, 0, sizeof(prstatus));
1130
1131 notes[0].name = "CORE";
1132 notes[0].type = NT_PRSTATUS;
1133 notes[0].datasz = sizeof(prstatus);
1134 notes[0].data = &prstatus;
1135 prstatus.pr_info.si_signo = prstatus.pr_cursig = signr;
1136 prstatus.pr_sigpend = current->pending.signal.sig[0];
1137 prstatus.pr_sighold = current->blocked.sig[0];
1138 psinfo.pr_pid = prstatus.pr_pid = current->pid;
1139 psinfo.pr_ppid = prstatus.pr_ppid = current->parent->pid;
1140 psinfo.pr_pgrp = prstatus.pr_pgrp = process_group(current);
1141 psinfo.pr_sid = prstatus.pr_sid = current->signal->session;
1142 if (current->pid == current->tgid) {
1143 /*
1144 * This is the record for the group leader. Add in the
1145 * cumulative times of previous dead threads. This total
1146 * won't include the time of each live thread whose state
1147 * is included in the core dump. The final total reported
1148 * to our parent process when it calls wait4 will include
1149 * those sums as well as the little bit more time it takes
1150 * this and each other thread to finish dying after the
1151 * core dump synchronization phase.
1152 */
1153 jiffies_to_timeval(current->utime + current->signal->utime,
1154 &prstatus.pr_utime);
1155 jiffies_to_timeval(current->stime + current->signal->stime,
1156 &prstatus.pr_stime);
1157 } else {
1158 jiffies_to_timeval(current->utime, &prstatus.pr_utime);
1159 jiffies_to_timeval(current->stime, &prstatus.pr_stime);
1160 }
1161 jiffies_to_timeval(current->signal->cutime, &prstatus.pr_cutime);
1162 jiffies_to_timeval(current->signal->cstime, &prstatus.pr_cstime);
1163
1164 if (sizeof(elf_gregset_t) != sizeof(struct pt_regs)) {
1165 printk("sizeof(elf_gregset_t) (%d) != sizeof(struct pt_regs) "
1166 "(%d)\n", sizeof(elf_gregset_t), sizeof(struct pt_regs));
1167 } else {
1168 *(struct pt_regs *)&prstatus.pr_reg = *regs;
1169 }
1170
1171 notes[1].name = "CORE";
1172 notes[1].type = NT_PRPSINFO;
1173 notes[1].datasz = sizeof(psinfo);
1174 notes[1].data = &psinfo;
1175 i = current->state ? ffz(~current->state) + 1 : 0;
1176 psinfo.pr_state = i;
1177 psinfo.pr_sname = (i < 0 || i > 5) ? '.' : "RSDZTD"[i];
1178 psinfo.pr_zomb = psinfo.pr_sname == 'Z';
1179 psinfo.pr_nice = task_nice(current);
1180 psinfo.pr_flag = current->flags;
1181 psinfo.pr_uid = current->uid;
1182 psinfo.pr_gid = current->gid;
1183 {
1184 int i, len;
1185
1186 set_fs(fs);
1187
1188 len = current->mm->arg_end - current->mm->arg_start;
1189 len = len >= ELF_PRARGSZ ? ELF_PRARGSZ : len;
1190 copy_from_user(&psinfo.pr_psargs,
1191 (const char *)current->mm->arg_start, len);
1192 for(i = 0; i < len; i++)
1193 if (psinfo.pr_psargs[i] == 0)
1194 psinfo.pr_psargs[i] = ' ';
1195 psinfo.pr_psargs[len] = 0;
1196
1197 set_fs(KERNEL_DS);
1198 }
1199 strlcpy(psinfo.pr_fname, current->comm, sizeof(psinfo.pr_fname));
1200
1201 notes[2].name = "CORE";
1202 notes[2].type = NT_TASKSTRUCT;
1203 notes[2].datasz = sizeof(*current);
1204 notes[2].data = current;
1205
1206 /* Try to dump the FPU. */
1207 prstatus.pr_fpvalid = dump_fpu (regs, &fpu);
1208 if (!prstatus.pr_fpvalid) {
1209 numnote--;
1210 } else {
1211 notes[3].name = "CORE";
1212 notes[3].type = NT_PRFPREG;
1213 notes[3].datasz = sizeof(fpu);
1214 notes[3].data = &fpu;
1215 }
1216
1217 /* Write notes phdr entry. */
1218 {
1219 struct elf_phdr phdr;
1220 int sz = 0;
1221
1222 for(i = 0; i < numnote; i++)
1223 sz += notesize(&notes[i]);
1224
1225 phdr.p_type = PT_NOTE;
1226 phdr.p_offset = offset;
1227 phdr.p_vaddr = 0;
1228 phdr.p_paddr = 0;
1229 phdr.p_filesz = sz;
1230 phdr.p_memsz = 0;
1231 phdr.p_flags = 0;
1232 phdr.p_align = 0;
1233
1234 offset += phdr.p_filesz;
1235 DUMP_WRITE(&phdr, sizeof(phdr));
1236 }
1237
1238 /* Page-align dumped data. */
1239 dataoff = offset = roundup(offset, PAGE_SIZE);
1240
1241 /* Write program headers for segments dump. */
1242 for(vma = current->mm->mmap, i = 0;
1243 i < segs && vma != NULL; vma = vma->vm_next) {
1244 struct elf_phdr phdr;
1245 size_t sz;
1246
1247 i++;
1248
1249 sz = vma->vm_end - vma->vm_start;
1250
1251 phdr.p_type = PT_LOAD;
1252 phdr.p_offset = offset;
1253 phdr.p_vaddr = vma->vm_start;
1254 phdr.p_paddr = 0;
1255 phdr.p_filesz = maydump(vma) ? sz : 0;
1256 phdr.p_memsz = sz;
1257 offset += phdr.p_filesz;
1258 phdr.p_flags = vma->vm_flags & VM_READ ? PF_R : 0;
1259 if (vma->vm_flags & VM_WRITE) phdr.p_flags |= PF_W;
1260 if (vma->vm_flags & VM_EXEC) phdr.p_flags |= PF_X;
1261 phdr.p_align = PAGE_SIZE;
1262
1263 DUMP_WRITE(&phdr, sizeof(phdr));
1264 }
1265
1266 for(i = 0; i < numnote; i++)
1267 if (!writenote(&notes[i], file))
1268 goto end_coredump;
1269
1270 set_fs(fs);
1271
1272 DUMP_SEEK(dataoff);
1273
1274 for(i = 0, vma = current->mm->mmap;
1275 i < segs && vma != NULL;
1276 vma = vma->vm_next) {
1277 unsigned long addr = vma->vm_start;
1278 unsigned long len = vma->vm_end - vma->vm_start;
1279
1280 if (!maydump(vma))
1281 continue;
1282 i++;
1283#ifdef DEBUG
1284 printk("elf_core_dump: writing %08lx %lx\n", addr, len);
1285#endif
1286 DUMP_WRITE((void *)addr, len);
1287 }
1288
1289 if ((off_t) file->f_pos != offset) {
1290 /* Sanity check. */
1291 printk("elf_core_dump: file->f_pos (%ld) != offset (%ld)\n",
1292 (off_t) file->f_pos, offset);
1293 }
1294
1295end_coredump:
1296 set_fs(fs);
1297 return has_dumped;
1298}
1299
1300static int __init init_irix_binfmt(void)
1301{
1302 int init_inventory(void);
1303 extern asmlinkage unsigned long sys_call_table;
1304 extern asmlinkage unsigned long sys_call_table_irix5;
1305
1306 init_inventory();
1307
1308 /*
1309 * Copy the IRIX5 syscall table (8000 bytes) into the main syscall
1310 * table. The IRIX5 calls are located by an offset of 8000 bytes
1311 * from the beginning of the main table.
1312 */
1313 memcpy((void *) ((unsigned long) &sys_call_table + 8000),
1314 &sys_call_table_irix5, 8000);
1315
1316 return register_binfmt(&irix_format);
1317}
1318
1319static void __exit exit_irix_binfmt(void)
1320{
1321 /* Remove the IRIX ELF loaders. */
1322 unregister_binfmt(&irix_format);
1323}
1324
1325module_init(init_irix_binfmt)
1326module_exit(exit_irix_binfmt)
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-01 22:06:26 -0500