Release 4.14 arch/sh/kernel/module.c
/* Kernel module help for SH.
SHcompact version by Kaz Kojima and Paul Mundt.
SHmedia bits:
Copyright 2004 SuperH (UK) Ltd
Author: Richard Curnow
Based on the sh version, and on code from the sh64-specific parts of
modutils, originally written by Richard Curnow and Ben Gaster.
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/moduleloader.h>
#include <linux/elf.h>
#include <linux/vmalloc.h>
#include <linux/bug.h>
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <asm/unaligned.h>
#include <asm/dwarf.h>
int apply_relocate_add(Elf32_Shdr *sechdrs,
const char *strtab,
unsigned int symindex,
unsigned int relsec,
struct module *me)
{
unsigned int i;
Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
Elf32_Sym *sym;
Elf32_Addr relocation;
uint32_t *location;
uint32_t value;
pr_debug("Applying relocate section %u to %u\n", relsec,
sechdrs[relsec].sh_info);
for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
/* This is where to make the change */
location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
+ rel[i].r_offset;
/* This is the symbol it is referring to. Note that all
undefined symbols have been resolved. */
sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
+ ELF32_R_SYM(rel[i].r_info);
relocation = sym->st_value + rel[i].r_addend;
#ifdef CONFIG_SUPERH64
/* For text addresses, bit2 of the st_other field indicates
* whether the symbol is SHmedia (1) or SHcompact (0). If
* SHmedia, the LSB of the symbol needs to be asserted
* for the CPU to be in SHmedia mode when it starts executing
* the branch target. */
relocation |= !!(sym->st_other & 4);
#endif
switch (ELF32_R_TYPE(rel[i].r_info)) {
case R_SH_NONE:
break;
case R_SH_DIR32:
value = get_unaligned(location);
value += relocation;
put_unaligned(value, location);
break;
case R_SH_REL32:
relocation = (relocation - (Elf32_Addr) location);
value = get_unaligned(location);
value += relocation;
put_unaligned(value, location);
break;
case R_SH_IMM_LOW16:
*location = (*location & ~0x3fffc00) |
((relocation & 0xffff) << 10);
break;
case R_SH_IMM_MEDLOW16:
*location = (*location & ~0x3fffc00) |
(((relocation >> 16) & 0xffff) << 10);
break;
case R_SH_IMM_LOW16_PCREL:
relocation -= (Elf32_Addr) location;
*location = (*location & ~0x3fffc00) |
((relocation & 0xffff) << 10);
break;
case R_SH_IMM_MEDLOW16_PCREL:
relocation -= (Elf32_Addr) location;
*location = (*location & ~0x3fffc00) |
(((relocation >> 16) & 0xffff) << 10);
break;
default:
printk(KERN_ERR "module %s: Unknown relocation: %u\n",
me->name, ELF32_R_TYPE(rel[i].r_info));
return -ENOEXEC;
}
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 396 | 98.02% | 4 | 80.00% |
| Harvey Harrison | 8 | 1.98% | 1 | 20.00% |
| Total | 404 | 100.00% | 5 | 100.00% |
int module_finalize(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs,
struct module *me)
{
int ret = 0;
ret |= module_dwarf_finalize(hdr, sechdrs, me);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 29 | 74.36% | 2 | 66.67% |
| Matt Fleming | 10 | 25.64% | 1 | 33.33% |
| Total | 39 | 100.00% | 3 | 100.00% |
void module_arch_cleanup(struct module *mod)
{
module_dwarf_cleanup(mod);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 8 | 53.33% | 1 | 25.00% |
| Matt Fleming | 4 | 26.67% | 1 | 25.00% |
| Paul Mundt | 3 | 20.00% | 2 | 50.00% |
| Total | 15 | 100.00% | 4 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 450 | 92.59% | 6 | 66.67% |
| Matt Fleming | 17 | 3.50% | 1 | 11.11% |
| Harvey Harrison | 11 | 2.26% | 1 | 11.11% |
| Andrew Morton | 8 | 1.65% | 1 | 11.11% |
| Total | 486 | 100.00% | 9 | 100.00% |
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