mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 14:15:10 +07:00
66574cc054
This patch removes all the module loader hook implementations in the architecture specific code where the functionality is the same as that now provided by the recently added default hooks. Signed-off-by: Jonas Bonn <jonas@southpole.se> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
127 lines
3.0 KiB
C
127 lines
3.0 KiB
C
/*
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* Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2007-2009 PetaLogix
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/moduleloader.h>
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#include <linux/kernel.h>
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#include <linux/elf.h>
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#include <linux/vmalloc.h>
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#include <linux/fs.h>
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#include <linux/string.h>
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#include <asm/pgtable.h>
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#include <asm/cacheflush.h>
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int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,
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unsigned int symindex, unsigned int relsec, struct module *module)
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{
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unsigned int i;
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Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr;
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Elf32_Sym *sym;
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unsigned long int *location;
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unsigned long int value;
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#if __GNUC__ < 4
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unsigned long int old_value;
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#endif
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pr_debug("Applying add relocation section %u to %u\n",
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relsec, sechdrs[relsec].sh_info);
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for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rela); i++) {
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location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr +
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rela[i].r_offset;
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sym = (Elf32_Sym *)sechdrs[symindex].sh_addr +
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ELF32_R_SYM(rela[i].r_info);
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value = sym->st_value + rela[i].r_addend;
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switch (ELF32_R_TYPE(rela[i].r_info)) {
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/*
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* Be careful! mb-gcc / mb-ld splits the relocs between the
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* text and the reloc table. In general this means we must
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* read the current contents of (*location), add any offset
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* then store the result back in
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*/
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case R_MICROBLAZE_32:
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#if __GNUC__ < 4
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old_value = *location;
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*location = value + old_value;
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pr_debug("R_MICROBLAZE_32 (%08lx->%08lx)\n",
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old_value, value);
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#else
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*location = value;
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#endif
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break;
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case R_MICROBLAZE_64:
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#if __GNUC__ < 4
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/* Split relocs only required/used pre gcc4.1.1 */
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old_value = ((location[0] & 0x0000FFFF) << 16) |
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(location[1] & 0x0000FFFF);
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value += old_value;
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#endif
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location[0] = (location[0] & 0xFFFF0000) |
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(value >> 16);
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location[1] = (location[1] & 0xFFFF0000) |
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(value & 0xFFFF);
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#if __GNUC__ < 4
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pr_debug("R_MICROBLAZE_64 (%08lx->%08lx)\n",
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old_value, value);
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#endif
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break;
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case R_MICROBLAZE_64_PCREL:
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#if __GNUC__ < 4
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old_value = (location[0] & 0xFFFF) << 16 |
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(location[1] & 0xFFFF);
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value -= old_value;
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#endif
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value -= (unsigned long int)(location) + 4;
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location[0] = (location[0] & 0xFFFF0000) |
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(value >> 16);
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location[1] = (location[1] & 0xFFFF0000) |
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(value & 0xFFFF);
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pr_debug("R_MICROBLAZE_64_PCREL (%08lx)\n",
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value);
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break;
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case R_MICROBLAZE_32_PCREL_LO:
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pr_debug("R_MICROBLAZE_32_PCREL_LO\n");
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break;
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case R_MICROBLAZE_64_NONE:
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pr_debug("R_MICROBLAZE_NONE\n");
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break;
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case R_MICROBLAZE_NONE:
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pr_debug("R_MICROBLAZE_NONE\n");
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break;
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default:
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printk(KERN_ERR "module %s: "
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"Unknown relocation: %u\n",
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module->name,
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ELF32_R_TYPE(rela[i].r_info));
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return -ENOEXEC;
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}
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}
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return 0;
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}
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int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
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struct module *module)
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{
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flush_dcache();
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return 0;
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}
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