1 /* Kernel dynamically loadable module help for PARISC.
3 * The best reference for this stuff is probably the Processor-
4 * Specific ELF Supplement for PA-RISC:
5 * http://ftp.parisc-linux.org/docs/arch/elf-pa-hp.pdf
7 * Linux/PA-RISC Project (http://www.parisc-linux.org/)
8 * Copyright (C) 2003 Randolph Chung <tausq at debian . org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 * We are not doing SEGREL32 handling correctly. According to the ABI, we
29 * should do a value offset, like this:
30 * if (in_init(me, (void *)val))
31 * val -= (uint32_t)me->module_init;
33 * val -= (uint32_t)me->module_core;
34 * However, SEGREL32 is used only for PARISC unwind entries, and we want
35 * those entries to have an absolute address, and not just an offset.
37 * The unwind table mechanism has the ability to specify an offset for
38 * the unwind table; however, because we split off the init functions into
39 * a different piece of memory, it is not possible to do this using a
40 * single offset. Instead, we use the above hack for now.
43 #include <linux/moduleloader.h>
44 #include <linux/elf.h>
45 #include <linux/vmalloc.h>
47 #include <linux/string.h>
48 #include <linux/kernel.h>
49 #include <linux/bug.h>
51 #include <asm/unwind.h>
56 #define DEBUGP(fmt...)
59 #define CHECK_RELOC(val, bits) \
60 if ( ( !((val) & (1<<((bits)-1))) && ((val)>>(bits)) != 0 ) || \
61 ( ((val) & (1<<((bits)-1))) && ((val)>>(bits)) != (((__typeof__(val))(~0))>>((bits)+2)))) { \
62 printk(KERN_ERR "module %s relocation of symbol %s is out of range (0x%lx in %d bits)\n", \
63 me->name, strtab + sym->st_name, (unsigned long)val, bits); \
67 /* Maximum number of GOT entries. We use a long displacement ldd from
68 * the bottom of the table, which has a maximum signed displacement of
69 * 0x3fff; however, since we're only going forward, this becomes
70 * 0x1fff, and thus, since each GOT entry is 8 bytes long we can have
71 * at most 1023 entries */
74 /* three functions to determine where in the module core
75 * or init pieces the location is */
76 static inline int in_init(struct module *me, void *loc)
78 return (loc >= me->module_init &&
79 loc <= (me->module_init + me->init_size));
82 static inline int in_core(struct module *me, void *loc)
84 return (loc >= me->module_core &&
85 loc <= (me->module_core + me->core_size));
88 static inline int in_local(struct module *me, void *loc)
90 return in_init(me, loc) || in_core(me, loc);
93 static inline int in_local_section(struct module *me, void *loc, void *dot)
95 return (in_init(me, loc) && in_init(me, dot)) ||
96 (in_core(me, loc) && in_core(me, dot));
105 #define Elf_Fdesc Elf32_Fdesc
108 Elf32_Word insns[2]; /* each stub entry has two insns */
115 #define Elf_Fdesc Elf64_Fdesc
118 Elf64_Word insns[4]; /* each stub entry has four insns */
122 /* Field selection types defined by hppa */
123 #define rnd(x) (((x)+0x1000)&~0x1fff)
124 /* fsel: full 32 bits */
125 #define fsel(v,a) ((v)+(a))
126 /* lsel: select left 21 bits */
127 #define lsel(v,a) (((v)+(a))>>11)
128 /* rsel: select right 11 bits */
129 #define rsel(v,a) (((v)+(a))&0x7ff)
130 /* lrsel with rounding of addend to nearest 8k */
131 #define lrsel(v,a) (((v)+rnd(a))>>11)
132 /* rrsel with rounding of addend to nearest 8k */
133 #define rrsel(v,a) ((((v)+rnd(a))&0x7ff)+((a)-rnd(a)))
135 #define mask(x,sz) ((x) & ~((1<<(sz))-1))
138 /* The reassemble_* functions prepare an immediate value for
139 insertion into an opcode. pa-risc uses all sorts of weird bitfields
140 in the instruction to hold the value. */
141 static inline int reassemble_14(int as14)
143 return (((as14 & 0x1fff) << 1) |
144 ((as14 & 0x2000) >> 13));
147 static inline int reassemble_17(int as17)
149 return (((as17 & 0x10000) >> 16) |
150 ((as17 & 0x0f800) << 5) |
151 ((as17 & 0x00400) >> 8) |
152 ((as17 & 0x003ff) << 3));
155 static inline int reassemble_21(int as21)
157 return (((as21 & 0x100000) >> 20) |
158 ((as21 & 0x0ffe00) >> 8) |
159 ((as21 & 0x000180) << 7) |
160 ((as21 & 0x00007c) << 14) |
161 ((as21 & 0x000003) << 12));
164 static inline int reassemble_22(int as22)
166 return (((as22 & 0x200000) >> 21) |
167 ((as22 & 0x1f0000) << 5) |
168 ((as22 & 0x00f800) << 5) |
169 ((as22 & 0x000400) >> 8) |
170 ((as22 & 0x0003ff) << 3));
173 void *module_alloc(unsigned long size)
177 return vmalloc(size);
181 static inline unsigned long count_gots(const Elf_Rela *rela, unsigned long n)
186 static inline unsigned long count_fdescs(const Elf_Rela *rela, unsigned long n)
191 static inline unsigned long count_stubs(const Elf_Rela *rela, unsigned long n)
193 unsigned long cnt = 0;
195 for (; n > 0; n--, rela++)
197 switch (ELF32_R_TYPE(rela->r_info)) {
198 case R_PARISC_PCREL17F:
199 case R_PARISC_PCREL22F:
207 static inline unsigned long count_gots(const Elf_Rela *rela, unsigned long n)
209 unsigned long cnt = 0;
211 for (; n > 0; n--, rela++)
213 switch (ELF64_R_TYPE(rela->r_info)) {
214 case R_PARISC_LTOFF21L:
215 case R_PARISC_LTOFF14R:
216 case R_PARISC_PCREL22F:
224 static inline unsigned long count_fdescs(const Elf_Rela *rela, unsigned long n)
226 unsigned long cnt = 0;
228 for (; n > 0; n--, rela++)
230 switch (ELF64_R_TYPE(rela->r_info)) {
231 case R_PARISC_FPTR64:
239 static inline unsigned long count_stubs(const Elf_Rela *rela, unsigned long n)
241 unsigned long cnt = 0;
243 for (; n > 0; n--, rela++)
245 switch (ELF64_R_TYPE(rela->r_info)) {
246 case R_PARISC_PCREL22F:
256 /* Free memory returned from module_alloc */
257 void module_free(struct module *mod, void *module_region)
259 vfree(module_region);
260 /* FIXME: If module_region == mod->init_region, trim exception
265 int module_frob_arch_sections(CONST Elf_Ehdr *hdr,
266 CONST Elf_Shdr *sechdrs,
267 CONST char *secstrings,
270 unsigned long gots = 0, fdescs = 0, stubs = 0, init_stubs = 0;
273 for (i = 1; i < hdr->e_shnum; i++) {
274 const Elf_Rela *rels = (void *)hdr + sechdrs[i].sh_offset;
275 unsigned long nrels = sechdrs[i].sh_size / sizeof(*rels);
277 if (strncmp(secstrings + sechdrs[i].sh_name,
278 ".PARISC.unwind", 14) == 0)
279 me->arch.unwind_section = i;
281 if (sechdrs[i].sh_type != SHT_RELA)
284 /* some of these are not relevant for 32-bit/64-bit
285 * we leave them here to make the code common. the
286 * compiler will do its thing and optimize out the
287 * stuff we don't need
289 gots += count_gots(rels, nrels);
290 fdescs += count_fdescs(rels, nrels);
291 if(strncmp(secstrings + sechdrs[i].sh_name,
292 ".rela.init", 10) == 0)
293 init_stubs += count_stubs(rels, nrels);
295 stubs += count_stubs(rels, nrels);
298 /* align things a bit */
299 me->core_size = ALIGN(me->core_size, 16);
300 me->arch.got_offset = me->core_size;
301 me->core_size += gots * sizeof(struct got_entry);
303 me->core_size = ALIGN(me->core_size, 16);
304 me->arch.fdesc_offset = me->core_size;
305 me->core_size += fdescs * sizeof(Elf_Fdesc);
307 me->core_size = ALIGN(me->core_size, 16);
308 me->arch.stub_offset = me->core_size;
309 me->core_size += stubs * sizeof(struct stub_entry);
311 me->init_size = ALIGN(me->init_size, 16);
312 me->arch.init_stub_offset = me->init_size;
313 me->init_size += init_stubs * sizeof(struct stub_entry);
315 me->arch.got_max = gots;
316 me->arch.fdesc_max = fdescs;
317 me->arch.stub_max = stubs;
318 me->arch.init_stub_max = init_stubs;
324 static Elf64_Word get_got(struct module *me, unsigned long value, long addend)
327 struct got_entry *got;
333 got = me->module_core + me->arch.got_offset;
334 for (i = 0; got[i].addr; i++)
335 if (got[i].addr == value)
338 BUG_ON(++me->arch.got_count > me->arch.got_max);
342 DEBUGP("GOT ENTRY %d[%x] val %lx\n", i, i*sizeof(struct got_entry),
344 return i * sizeof(struct got_entry);
346 #endif /* CONFIG_64BIT */
349 static Elf_Addr get_fdesc(struct module *me, unsigned long value)
351 Elf_Fdesc *fdesc = me->module_core + me->arch.fdesc_offset;
354 printk(KERN_ERR "%s: zero OPD requested!\n", me->name);
358 /* Look for existing fdesc entry. */
359 while (fdesc->addr) {
360 if (fdesc->addr == value)
361 return (Elf_Addr)fdesc;
365 BUG_ON(++me->arch.fdesc_count > me->arch.fdesc_max);
369 fdesc->gp = (Elf_Addr)me->module_core + me->arch.got_offset;
370 return (Elf_Addr)fdesc;
372 #endif /* CONFIG_64BIT */
380 static Elf_Addr get_stub(struct module *me, unsigned long value, long addend,
381 enum elf_stub_type stub_type, int init_section)
384 struct stub_entry *stub;
387 i = me->arch.init_stub_count++;
388 BUG_ON(me->arch.init_stub_count > me->arch.init_stub_max);
389 stub = me->module_init + me->arch.init_stub_offset +
390 i * sizeof(struct stub_entry);
392 i = me->arch.stub_count++;
393 BUG_ON(me->arch.stub_count > me->arch.stub_max);
394 stub = me->module_core + me->arch.stub_offset +
395 i * sizeof(struct stub_entry);
399 /* for 32-bit the stub looks like this:
401 * be,n R'XXX(%sr4,%r1)
403 //value = *(unsigned long *)((value + addend) & ~3); /* why? */
405 stub->insns[0] = 0x20200000; /* ldil L'XXX,%r1 */
406 stub->insns[1] = 0xe0202002; /* be,n R'XXX(%sr4,%r1) */
408 stub->insns[0] |= reassemble_21(lrsel(value, addend));
409 stub->insns[1] |= reassemble_17(rrsel(value, addend) / 4);
412 /* for 64-bit we have three kinds of stubs:
413 * for normal function calls:
425 * for direct branches (jumps between different section of the
433 stub->insns[0] = 0x537b0000; /* ldd 0(%dp),%dp */
434 stub->insns[1] = 0x53610020; /* ldd 10(%dp),%r1 */
435 stub->insns[2] = 0xe820d000; /* bve (%r1) */
436 stub->insns[3] = 0x537b0030; /* ldd 18(%dp),%dp */
438 stub->insns[0] |= reassemble_14(get_got(me, value, addend) & 0x3fff);
441 stub->insns[0] = 0x20200000; /* ldil 0,%r1 */
442 stub->insns[1] = 0x34210000; /* ldo 0(%r1), %r1 */
443 stub->insns[2] = 0x50210020; /* ldd 10(%r1),%r1 */
444 stub->insns[3] = 0xe820d002; /* bve,n (%r1) */
446 stub->insns[0] |= reassemble_21(lrsel(value, addend));
447 stub->insns[1] |= reassemble_14(rrsel(value, addend));
449 case ELF_STUB_DIRECT:
450 stub->insns[0] = 0x20200000; /* ldil 0,%r1 */
451 stub->insns[1] = 0x34210000; /* ldo 0(%r1), %r1 */
452 stub->insns[2] = 0xe820d002; /* bve,n (%r1) */
454 stub->insns[0] |= reassemble_21(lrsel(value, addend));
455 stub->insns[1] |= reassemble_14(rrsel(value, addend));
461 return (Elf_Addr)stub;
464 int apply_relocate(Elf_Shdr *sechdrs,
466 unsigned int symindex,
470 /* parisc should not need this ... */
471 printk(KERN_ERR "module %s: RELOCATION unsupported\n",
477 int apply_relocate_add(Elf_Shdr *sechdrs,
479 unsigned int symindex,
484 Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
490 //unsigned long dp = (unsigned long)$global$;
491 register unsigned long dp asm ("r27");
493 DEBUGP("Applying relocate section %u to %u\n", relsec,
494 sechdrs[relsec].sh_info);
495 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
496 /* This is where to make the change */
497 loc = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
499 /* This is the symbol it is referring to */
500 sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
501 + ELF32_R_SYM(rel[i].r_info);
502 if (!sym->st_value) {
503 printk(KERN_WARNING "%s: Unknown symbol %s\n",
504 me->name, strtab + sym->st_name);
507 //dot = (sechdrs[relsec].sh_addr + rel->r_offset) & ~0x03;
508 dot = (Elf32_Addr)loc & ~0x03;
511 addend = rel[i].r_addend;
514 #define r(t) ELF32_R_TYPE(rel[i].r_info)==t ? #t :
515 DEBUGP("Symbol %s loc 0x%x val 0x%x addend 0x%x: %s\n",
516 strtab + sym->st_name,
517 (uint32_t)loc, val, addend,
531 switch (ELF32_R_TYPE(rel[i].r_info)) {
532 case R_PARISC_PLABEL32:
533 /* 32-bit function address */
534 /* no function descriptors... */
535 *loc = fsel(val, addend);
538 /* direct 32-bit ref */
539 *loc = fsel(val, addend);
541 case R_PARISC_DIR21L:
542 /* left 21 bits of effective address */
543 val = lrsel(val, addend);
544 *loc = mask(*loc, 21) | reassemble_21(val);
546 case R_PARISC_DIR14R:
547 /* right 14 bits of effective address */
548 val = rrsel(val, addend);
549 *loc = mask(*loc, 14) | reassemble_14(val);
551 case R_PARISC_SEGREL32:
552 /* 32-bit segment relative address */
553 /* See note about special handling of SEGREL32 at
554 * the beginning of this file.
556 *loc = fsel(val, addend);
558 case R_PARISC_DPREL21L:
559 /* left 21 bit of relative address */
560 val = lrsel(val - dp, addend);
561 *loc = mask(*loc, 21) | reassemble_21(val);
563 case R_PARISC_DPREL14R:
564 /* right 14 bit of relative address */
565 val = rrsel(val - dp, addend);
566 *loc = mask(*loc, 14) | reassemble_14(val);
568 case R_PARISC_PCREL17F:
569 /* 17-bit PC relative address */
570 val = get_stub(me, val, addend, ELF_STUB_GOT, in_init(me, loc));
571 val = (val - dot - 8)/4;
573 *loc = (*loc & ~0x1f1ffd) | reassemble_17(val);
575 case R_PARISC_PCREL22F:
576 /* 22-bit PC relative address; only defined for pa20 */
577 val = get_stub(me, val, addend, ELF_STUB_GOT, in_init(me, loc));
578 DEBUGP("STUB FOR %s loc %lx+%lx at %lx\n",
579 strtab + sym->st_name, (unsigned long)loc, addend,
581 val = (val - dot - 8)/4;
582 CHECK_RELOC(val, 22);
583 *loc = (*loc & ~0x3ff1ffd) | reassemble_22(val);
587 printk(KERN_ERR "module %s: Unknown relocation: %u\n",
588 me->name, ELF32_R_TYPE(rel[i].r_info));
597 int apply_relocate_add(Elf_Shdr *sechdrs,
599 unsigned int symindex,
604 Elf64_Rela *rel = (void *)sechdrs[relsec].sh_addr;
612 DEBUGP("Applying relocate section %u to %u\n", relsec,
613 sechdrs[relsec].sh_info);
614 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
615 /* This is where to make the change */
616 loc = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
618 /* This is the symbol it is referring to */
619 sym = (Elf64_Sym *)sechdrs[symindex].sh_addr
620 + ELF64_R_SYM(rel[i].r_info);
621 if (!sym->st_value) {
622 printk(KERN_WARNING "%s: Unknown symbol %s\n",
623 me->name, strtab + sym->st_name);
626 //dot = (sechdrs[relsec].sh_addr + rel->r_offset) & ~0x03;
627 dot = (Elf64_Addr)loc & ~0x03;
628 loc64 = (Elf64_Xword *)loc;
631 addend = rel[i].r_addend;
634 #define r(t) ELF64_R_TYPE(rel[i].r_info)==t ? #t :
635 printk("Symbol %s loc %p val 0x%Lx addend 0x%Lx: %s\n",
636 strtab + sym->st_name,
648 switch (ELF64_R_TYPE(rel[i].r_info)) {
649 case R_PARISC_LTOFF21L:
650 /* LT-relative; left 21 bits */
651 val = get_got(me, val, addend);
652 DEBUGP("LTOFF21L Symbol %s loc %p val %lx\n",
653 strtab + sym->st_name,
656 *loc = mask(*loc, 21) | reassemble_21(val);
658 case R_PARISC_LTOFF14R:
659 /* L(ltoff(val+addend)) */
660 /* LT-relative; right 14 bits */
661 val = get_got(me, val, addend);
663 DEBUGP("LTOFF14R Symbol %s loc %p val %lx\n",
664 strtab + sym->st_name,
666 *loc = mask(*loc, 14) | reassemble_14(val);
668 case R_PARISC_PCREL22F:
669 /* PC-relative; 22 bits */
670 DEBUGP("PCREL22F Symbol %s loc %p val %lx\n",
671 strtab + sym->st_name,
673 /* can we reach it locally? */
674 if(!in_local_section(me, (void *)val, (void *)dot)) {
676 if (in_local(me, (void *)val))
677 /* this is the case where the
678 * symbol is local to the
679 * module, but in a different
680 * section, so stub the jump
681 * in case it's more than 22
683 val = get_stub(me, val, addend, ELF_STUB_DIRECT,
685 else if (strncmp(strtab + sym->st_name, "$$", 2)
687 val = get_stub(me, val, addend, ELF_STUB_MILLI,
690 val = get_stub(me, val, addend, ELF_STUB_GOT,
693 DEBUGP("STUB FOR %s loc %lx, val %lx+%lx at %lx\n",
694 strtab + sym->st_name, loc, sym->st_value,
696 /* FIXME: local symbols work as long as the
697 * core and init pieces aren't separated too
698 * far. If this is ever broken, you will trip
699 * the check below. The way to fix it would
700 * be to generate local stubs to go between init
702 if((Elf64_Sxword)(val - dot - 8) > 0x800000 -1 ||
703 (Elf64_Sxword)(val - dot - 8) < -0x800000) {
704 printk(KERN_ERR "Module %s, symbol %s is out of range for PCREL22F relocation\n",
705 me->name, strtab + sym->st_name);
708 val = (val - dot - 8)/4;
709 *loc = (*loc & ~0x3ff1ffd) | reassemble_22(val);
712 /* 64-bit effective address */
713 *loc64 = val + addend;
715 case R_PARISC_SEGREL32:
716 /* 32-bit segment relative address */
717 /* See note about special handling of SEGREL32 at
718 * the beginning of this file.
720 *loc = fsel(val, addend);
722 case R_PARISC_FPTR64:
723 /* 64-bit function address */
724 if(in_local(me, (void *)(val + addend))) {
725 *loc64 = get_fdesc(me, val+addend);
726 DEBUGP("FDESC for %s at %p points to %lx\n",
727 strtab + sym->st_name, *loc64,
728 ((Elf_Fdesc *)*loc64)->addr);
730 /* if the symbol is not local to this
731 * module then val+addend is a pointer
732 * to the function descriptor */
733 DEBUGP("Non local FPTR64 Symbol %s loc %p val %lx\n",
734 strtab + sym->st_name,
736 *loc64 = val + addend;
741 printk(KERN_ERR "module %s: Unknown relocation: %Lu\n",
742 me->name, ELF64_R_TYPE(rel[i].r_info));
751 register_unwind_table(struct module *me,
752 const Elf_Shdr *sechdrs)
754 unsigned char *table, *end;
757 if (!me->arch.unwind_section)
760 table = (unsigned char *)sechdrs[me->arch.unwind_section].sh_addr;
761 end = table + sechdrs[me->arch.unwind_section].sh_size;
762 gp = (Elf_Addr)me->module_core + me->arch.got_offset;
764 DEBUGP("register_unwind_table(), sect = %d at 0x%p - 0x%p (gp=0x%lx)\n",
765 me->arch.unwind_section, table, end, gp);
766 me->arch.unwind = unwind_table_add(me->name, 0, gp, table, end);
770 deregister_unwind_table(struct module *me)
773 unwind_table_remove(me->arch.unwind);
776 int module_finalize(const Elf_Ehdr *hdr,
777 const Elf_Shdr *sechdrs,
782 const char *strtab = NULL;
783 Elf_Sym *newptr, *oldptr;
784 Elf_Shdr *symhdr = NULL;
789 entry = (Elf_Fdesc *)me->init;
790 printk("FINALIZE, ->init FPTR is %p, GP %lx ADDR %lx\n", entry,
791 entry->gp, entry->addr);
792 addr = (u32 *)entry->addr;
793 printk("INSNS: %x %x %x %x\n",
794 addr[0], addr[1], addr[2], addr[3]);
795 printk("stubs used %ld, stubs max %ld\n"
796 "init_stubs used %ld, init stubs max %ld\n"
797 "got entries used %ld, gots max %ld\n"
798 "fdescs used %ld, fdescs max %ld\n",
799 me->arch.stub_count, me->arch.stub_max,
800 me->arch.init_stub_count, me->arch.init_stub_max,
801 me->arch.got_count, me->arch.got_max,
802 me->arch.fdesc_count, me->arch.fdesc_max);
805 register_unwind_table(me, sechdrs);
807 /* haven't filled in me->symtab yet, so have to find it
809 for (i = 1; i < hdr->e_shnum; i++) {
810 if(sechdrs[i].sh_type == SHT_SYMTAB
811 && (sechdrs[i].sh_type & SHF_ALLOC)) {
812 int strindex = sechdrs[i].sh_link;
814 * The cast is to drop the const from
815 * the sechdrs pointer */
816 symhdr = (Elf_Shdr *)&sechdrs[i];
817 strtab = (char *)sechdrs[strindex].sh_addr;
822 DEBUGP("module %s: strtab %p, symhdr %p\n",
823 me->name, strtab, symhdr);
825 if(me->arch.got_count > MAX_GOTS) {
826 printk(KERN_ERR "%s: Global Offset Table overflow (used %ld, allowed %d)\n",
827 me->name, me->arch.got_count, MAX_GOTS);
831 /* no symbol table */
835 oldptr = (void *)symhdr->sh_addr;
836 newptr = oldptr + 1; /* we start counting at 1 */
837 nsyms = symhdr->sh_size / sizeof(Elf_Sym);
838 DEBUGP("OLD num_symtab %lu\n", nsyms);
840 for (i = 1; i < nsyms; i++) {
841 oldptr++; /* note, count starts at 1 so preincrement */
842 if(strncmp(strtab + oldptr->st_name,
852 nsyms = newptr - (Elf_Sym *)symhdr->sh_addr;
853 DEBUGP("NEW num_symtab %lu\n", nsyms);
854 symhdr->sh_size = nsyms * sizeof(Elf_Sym);
855 return module_bug_finalize(hdr, sechdrs, me);
858 void module_arch_cleanup(struct module *mod)
860 deregister_unwind_table(mod);
861 module_bug_cleanup(mod);