summaryrefslogtreecommitdiffstats
path: root/arch/nds32/kernel/module.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/nds32/kernel/module.c')
-rw-r--r--arch/nds32/kernel/module.c278
1 files changed, 0 insertions, 278 deletions
diff --git a/arch/nds32/kernel/module.c b/arch/nds32/kernel/module.c
deleted file mode 100644
index 3897fd14a21d..000000000000
--- a/arch/nds32/kernel/module.c
+++ /dev/null
@@ -1,278 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/module.h>
-#include <linux/elf.h>
-#include <linux/vmalloc.h>
-#include <linux/moduleloader.h>
-#include <linux/pgtable.h>
-
-void *module_alloc(unsigned long size)
-{
- return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
- GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE,
- __builtin_return_address(0));
-}
-
-void module_free(struct module *module, void *region)
-{
- vfree(region);
-}
-
-int module_frob_arch_sections(Elf_Ehdr * hdr,
- Elf_Shdr * sechdrs,
- char *secstrings, struct module *mod)
-{
- return 0;
-}
-
-void do_reloc16(unsigned int val, unsigned int *loc, unsigned int val_mask,
- unsigned int val_shift, unsigned int loc_mask,
- unsigned int partial_in_place, unsigned int swap)
-{
- unsigned int tmp = 0, tmp2 = 0;
-
- __asm__ __volatile__("\tlhi.bi\t%0, [%2], 0\n"
- "\tbeqz\t%3, 1f\n"
- "\twsbh\t%0, %1\n"
- "1:\n":"=r"(tmp):"0"(tmp), "r"(loc), "r"(swap)
- );
-
- tmp2 = tmp & loc_mask;
- if (partial_in_place) {
- tmp &= (~loc_mask);
- tmp =
- tmp2 | ((tmp + ((val & val_mask) >> val_shift)) & val_mask);
- } else {
- tmp = tmp2 | ((val & val_mask) >> val_shift);
- }
-
- __asm__ __volatile__("\tbeqz\t%3, 2f\n"
- "\twsbh\t%0, %1\n"
- "2:\n"
- "\tshi.bi\t%0, [%2], 0\n":"=r"(tmp):"0"(tmp),
- "r"(loc), "r"(swap)
- );
-}
-
-void do_reloc32(unsigned int val, unsigned int *loc, unsigned int val_mask,
- unsigned int val_shift, unsigned int loc_mask,
- unsigned int partial_in_place, unsigned int swap)
-{
- unsigned int tmp = 0, tmp2 = 0;
-
- __asm__ __volatile__("\tlmw.bi\t%0, [%2], %0, 0\n"
- "\tbeqz\t%3, 1f\n"
- "\twsbh\t%0, %1\n"
- "\trotri\t%0, %1, 16\n"
- "1:\n":"=r"(tmp):"0"(tmp), "r"(loc), "r"(swap)
- );
-
- tmp2 = tmp & loc_mask;
- if (partial_in_place) {
- tmp &= (~loc_mask);
- tmp =
- tmp2 | ((tmp + ((val & val_mask) >> val_shift)) & val_mask);
- } else {
- tmp = tmp2 | ((val & val_mask) >> val_shift);
- }
-
- __asm__ __volatile__("\tbeqz\t%3, 2f\n"
- "\twsbh\t%0, %1\n"
- "\trotri\t%0, %1, 16\n"
- "2:\n"
- "\tsmw.bi\t%0, [%2], %0, 0\n":"=r"(tmp):"0"(tmp),
- "r"(loc), "r"(swap)
- );
-}
-
-static inline int exceed_limit(int offset, unsigned int val_mask,
- struct module *module, Elf32_Rela * rel,
- unsigned int relindex, unsigned int reloc_order)
-{
- int abs_off = offset < 0 ? ~offset : offset;
-
- if (abs_off & (~val_mask)) {
- pr_err("\n%s: relocation type %d out of range.\n"
- "please rebuild the kernel module with gcc option \"-Wa,-mno-small-text\".\n",
- module->name, ELF32_R_TYPE(rel->r_info));
- pr_err("section %d reloc %d offset 0x%x relative 0x%x.\n",
- relindex, reloc_order, rel->r_offset, offset);
- return true;
- }
- return false;
-}
-
-#ifdef __NDS32_EL__
-#define NEED_SWAP 1
-#else
-#define NEED_SWAP 0
-#endif
-
-int
-apply_relocate_add(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_Rela *rel = (void *)relsec->sh_addr;
- unsigned int i;
-
- for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rela); i++, rel++) {
- Elf32_Addr *loc;
- Elf32_Sym *sym;
- Elf32_Addr v;
- s32 offset;
-
- offset = ELF32_R_SYM(rel->r_info);
- if (offset < 0
- || offset > (symsec->sh_size / sizeof(Elf32_Sym))) {
- pr_err("%s: bad relocation\n", module->name);
- pr_err("section %d reloc %d\n", relindex, i);
- return -ENOEXEC;
- }
-
- sym = ((Elf32_Sym *) symsec->sh_addr) + offset;
-
- if (rel->r_offset < 0
- || rel->r_offset > dstsec->sh_size - sizeof(u16)) {
- pr_err("%s: out of bounds relocation\n", module->name);
- pr_err("section %d reloc %d offset 0x%0x size %d\n",
- relindex, i, rel->r_offset, dstsec->sh_size);
- return -ENOEXEC;
- }
-
- loc = (Elf32_Addr *) (dstsec->sh_addr + rel->r_offset);
- v = sym->st_value + rel->r_addend;
-
- switch (ELF32_R_TYPE(rel->r_info)) {
- case R_NDS32_NONE:
- case R_NDS32_INSN16:
- case R_NDS32_LABEL:
- case R_NDS32_LONGCALL1:
- case R_NDS32_LONGCALL2:
- case R_NDS32_LONGCALL3:
- case R_NDS32_LONGCALL4:
- case R_NDS32_LONGJUMP1:
- case R_NDS32_LONGJUMP2:
- case R_NDS32_LONGJUMP3:
- case R_NDS32_9_FIXED_RELA:
- case R_NDS32_15_FIXED_RELA:
- case R_NDS32_17_FIXED_RELA:
- case R_NDS32_25_FIXED_RELA:
- case R_NDS32_LOADSTORE:
- case R_NDS32_DWARF2_OP1_RELA:
- case R_NDS32_DWARF2_OP2_RELA:
- case R_NDS32_DWARF2_LEB_RELA:
- case R_NDS32_RELA_NOP_MIX ... R_NDS32_RELA_NOP_MAX:
- break;
-
- case R_NDS32_32_RELA:
- do_reloc32(v, loc, 0xffffffff, 0, 0, 0, 0);
- break;
-
- case R_NDS32_HI20_RELA:
- do_reloc32(v, loc, 0xfffff000, 12, 0xfff00000, 0,
- NEED_SWAP);
- break;
-
- case R_NDS32_LO12S3_RELA:
- do_reloc32(v, loc, 0x00000fff, 3, 0xfffff000, 0,
- NEED_SWAP);
- break;
-
- case R_NDS32_LO12S2_RELA:
- do_reloc32(v, loc, 0x00000fff, 2, 0xfffff000, 0,
- NEED_SWAP);
- break;
-
- case R_NDS32_LO12S1_RELA:
- do_reloc32(v, loc, 0x00000fff, 1, 0xfffff000, 0,
- NEED_SWAP);
- break;
-
- case R_NDS32_LO12S0_RELA:
- case R_NDS32_LO12S0_ORI_RELA:
- do_reloc32(v, loc, 0x00000fff, 0, 0xfffff000, 0,
- NEED_SWAP);
- break;
-
- case R_NDS32_9_PCREL_RELA:
- if (exceed_limit
- ((v - (Elf32_Addr) loc), 0x000000ff, module, rel,
- relindex, i))
- return -ENOEXEC;
- do_reloc16(v - (Elf32_Addr) loc, loc, 0x000001ff, 1,
- 0xffffff00, 0, NEED_SWAP);
- break;
-
- case R_NDS32_15_PCREL_RELA:
- if (exceed_limit
- ((v - (Elf32_Addr) loc), 0x00003fff, module, rel,
- relindex, i))
- return -ENOEXEC;
- do_reloc32(v - (Elf32_Addr) loc, loc, 0x00007fff, 1,
- 0xffffc000, 0, NEED_SWAP);
- break;
-
- case R_NDS32_17_PCREL_RELA:
- if (exceed_limit
- ((v - (Elf32_Addr) loc), 0x0000ffff, module, rel,
- relindex, i))
- return -ENOEXEC;
- do_reloc32(v - (Elf32_Addr) loc, loc, 0x0001ffff, 1,
- 0xffff0000, 0, NEED_SWAP);
- break;
-
- case R_NDS32_25_PCREL_RELA:
- if (exceed_limit
- ((v - (Elf32_Addr) loc), 0x00ffffff, module, rel,
- relindex, i))
- return -ENOEXEC;
- do_reloc32(v - (Elf32_Addr) loc, loc, 0x01ffffff, 1,
- 0xff000000, 0, NEED_SWAP);
- break;
- case R_NDS32_WORD_9_PCREL_RELA:
- if (exceed_limit
- ((v - (Elf32_Addr) loc), 0x000000ff, module, rel,
- relindex, i))
- return -ENOEXEC;
- do_reloc32(v - (Elf32_Addr) loc, loc, 0x000001ff, 1,
- 0xffffff00, 0, NEED_SWAP);
- break;
-
- case R_NDS32_SDA15S3_RELA:
- case R_NDS32_SDA15S2_RELA:
- case R_NDS32_SDA15S1_RELA:
- case R_NDS32_SDA15S0_RELA:
- pr_err("%s: unsupported relocation type %d.\n",
- module->name, ELF32_R_TYPE(rel->r_info));
- pr_err
- ("Small data section access doesn't work in the kernel space; "
- "please rebuild the kernel module with gcc option -mcmodel=large.\n");
- pr_err("section %d reloc %d offset 0x%x size %d\n",
- relindex, i, rel->r_offset, dstsec->sh_size);
- break;
-
- default:
- pr_err("%s: unsupported relocation type %d.\n",
- module->name, ELF32_R_TYPE(rel->r_info));
- pr_err("section %d reloc %d offset 0x%x size %d\n",
- relindex, i, rel->r_offset, dstsec->sh_size);
- }
- }
- return 0;
-}
-
-int
-module_finalize(const Elf32_Ehdr * hdr, const Elf_Shdr * sechdrs,
- struct module *module)
-{
- return 0;
-}
-
-void module_arch_cleanup(struct module *mod)
-{
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 14:15:39 +0000