forked from Minki/linux
df8e4c7d8d
__vmalloc_area() has already been removed from upstream kernel, need
use __vmalloc_node_range() instead of.
The related commit: "d0a2126 mm: unify module_alloc code for vmalloc".
The related error (allmodconfig for unicore32):
CC arch/unicore32/kernel/module.o
arch/unicore32/kernel/module.c: In function 'module_alloc' :
arch/unicore32/kernel/module.c:34: error: implicit declaration of function '__vmalloc_area'
arch/unicore32/kernel/module.c:34: warning: return makes pointer from integer without a cast
make[1]: *** [arch/unicore32/kernel/module.o] Error 1
make: *** [arch/unicore32/kernel] Error 2
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
110 lines
2.7 KiB
C
110 lines
2.7 KiB
C
/*
|
|
* linux/arch/unicore32/kernel/module.c
|
|
*
|
|
* Code specific to PKUnity SoC and UniCore ISA
|
|
*
|
|
* Copyright (C) 2001-2010 GUAN Xue-tao
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/moduleloader.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/elf.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/string.h>
|
|
#include <linux/gfp.h>
|
|
|
|
#include <asm/pgtable.h>
|
|
#include <asm/sections.h>
|
|
|
|
void *module_alloc(unsigned long size)
|
|
{
|
|
return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
|
|
GFP_KERNEL, PAGE_KERNEL_EXEC, NUMA_NO_NODE,
|
|
__builtin_return_address(0));
|
|
}
|
|
|
|
int
|
|
apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
|
|
unsigned int relindex, struct module *module)
|
|
{
|
|
Elf32_Shdr *symsec = sechdrs + symindex;
|
|
Elf32_Shdr *relsec = sechdrs + relindex;
|
|
Elf32_Shdr *dstsec = sechdrs + relsec->sh_info;
|
|
Elf32_Rel *rel = (void *)relsec->sh_addr;
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++, rel++) {
|
|
unsigned long loc;
|
|
Elf32_Sym *sym;
|
|
s32 offset;
|
|
|
|
offset = ELF32_R_SYM(rel->r_info);
|
|
if (offset < 0 || offset >
|
|
(symsec->sh_size / sizeof(Elf32_Sym))) {
|
|
printk(KERN_ERR "%s: bad relocation, "
|
|
"section %d reloc %d\n",
|
|
module->name, relindex, i);
|
|
return -ENOEXEC;
|
|
}
|
|
|
|
sym = ((Elf32_Sym *)symsec->sh_addr) + offset;
|
|
|
|
if (rel->r_offset < 0 || rel->r_offset >
|
|
dstsec->sh_size - sizeof(u32)) {
|
|
printk(KERN_ERR "%s: out of bounds relocation, "
|
|
"section %d reloc %d offset %d size %d\n",
|
|
module->name, relindex, i, rel->r_offset,
|
|
dstsec->sh_size);
|
|
return -ENOEXEC;
|
|
}
|
|
|
|
loc = dstsec->sh_addr + rel->r_offset;
|
|
|
|
switch (ELF32_R_TYPE(rel->r_info)) {
|
|
case R_UNICORE_NONE:
|
|
/* ignore */
|
|
break;
|
|
|
|
case R_UNICORE_ABS32:
|
|
*(u32 *)loc += sym->st_value;
|
|
break;
|
|
|
|
case R_UNICORE_PC24:
|
|
case R_UNICORE_CALL:
|
|
case R_UNICORE_JUMP24:
|
|
offset = (*(u32 *)loc & 0x00ffffff) << 2;
|
|
if (offset & 0x02000000)
|
|
offset -= 0x04000000;
|
|
|
|
offset += sym->st_value - loc;
|
|
if (offset & 3 ||
|
|
offset <= (s32)0xfe000000 ||
|
|
offset >= (s32)0x02000000) {
|
|
printk(KERN_ERR
|
|
"%s: relocation out of range, section "
|
|
"%d reloc %d sym '%s'\n", module->name,
|
|
relindex, i, strtab + sym->st_name);
|
|
return -ENOEXEC;
|
|
}
|
|
|
|
offset >>= 2;
|
|
|
|
*(u32 *)loc &= 0xff000000;
|
|
*(u32 *)loc |= offset & 0x00ffffff;
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_ERR "%s: unknown relocation: %u\n",
|
|
module->name, ELF32_R_TYPE(rel->r_info));
|
|
return -ENOEXEC;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|