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-rw-r--r--arch/blackfin/lib/module.c306
1 files changed, 0 insertions, 306 deletions
diff --git a/arch/blackfin/lib/module.c b/arch/blackfin/lib/module.c
deleted file mode 100644
index 094afc5b49..0000000000
--- a/arch/blackfin/lib/module.c
+++ /dev/null
@@ -1,306 +0,0 @@
-/*
- * File: arch/blackfin/kernel/module.c
- * Based on:
- * Author:
- *
- * Created:
- * Description:
- *
- * Modified:
- * Copyright 2004-2006 Analog Devices Inc.
- *
- * Bugs: Enter bugs at http://blackfin.uclinux.org/
- *
- * 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.
- */
-
-#include <common.h>
-#include <elf.h>
-#include <module.h>
-#include <malloc.h>
-#include <errno.h>
-
-/*
- * handle arithmetic relocations.
- * See binutils/bfd/elf32-bfin.c for more details
- */
-#define RELOC_STACK_SIZE 100
-static uint32_t reloc_stack[RELOC_STACK_SIZE];
-static unsigned int reloc_stack_tos;
-
-#define is_reloc_stack_empty() ((reloc_stack_tos > 0)?0:1)
-
-static void reloc_stack_push(uint32_t value)
-{
- reloc_stack[reloc_stack_tos++] = value;
-}
-
-static uint32_t reloc_stack_pop(void)
-{
- return reloc_stack[--reloc_stack_tos];
-}
-
-static uint32_t reloc_stack_operate(unsigned int oper, struct module *mod)
-{
- uint32_t value;
-
- switch (oper) {
- case R_add:
- value = reloc_stack[reloc_stack_tos - 2] +
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_sub:
- value = reloc_stack[reloc_stack_tos - 2] -
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_mult:
- value = reloc_stack[reloc_stack_tos - 2] *
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_div:
- value = reloc_stack[reloc_stack_tos - 2] /
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_mod:
- value = reloc_stack[reloc_stack_tos - 2] %
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_lshift:
- value = reloc_stack[reloc_stack_tos - 2] <<
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_rshift:
- value = reloc_stack[reloc_stack_tos - 2] >>
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_and:
- value = reloc_stack[reloc_stack_tos - 2] &
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_or:
- value = reloc_stack[reloc_stack_tos - 2] |
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_xor:
- value = reloc_stack[reloc_stack_tos - 2] ^
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_land:
- value = reloc_stack[reloc_stack_tos - 2] &&
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_lor:
- value = reloc_stack[reloc_stack_tos - 2] ||
- reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 2;
- break;
- case R_neg:
- value = -reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos--;
- break;
- case R_comp:
- value = ~reloc_stack[reloc_stack_tos - 1];
- reloc_stack_tos -= 1;
- break;
- default:
- printf("module %s: unhandled reloction\n",
- mod->name);
- return 0;
- }
-
- /* now push the new value back on stack */
- reloc_stack_push(value);
-
- return value;
-}
-
-int
-apply_relocate(Elf_Shdr * sechdrs, const char *strtab,
- unsigned int symindex, unsigned int relsec, struct module *me)
-{
- printf("module %s: .rel unsupported\n", me->name);
- return -ENOEXEC;
-}
-
-/*************************************************************************/
-/* FUNCTION : apply_relocate_add */
-/* ABSTRACT : Blackfin specific relocation handling for the loadable */
-/* modules. Modules are expected to be .o files. */
-/* Arithmetic relocations are handled. */
-/* We do not expect LSETUP to be split and hence is not */
-/* handled. */
-/* R_byte and R_byte2 are also not handled as the gas */
-/* does not generate it. */
-/*************************************************************************/
-int
-apply_relocate_add(Elf_Shdr * sechdrs, const char *strtab,
- unsigned int symindex, unsigned int relsec,
- struct module *mod)
-{
- unsigned int i;
- unsigned short tmp;
- Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
- Elf32_Sym *sym;
- uint32_t *location32;
- uint16_t *location16;
- uint32_t value;
-
- 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 */
- location16 =
- (uint16_t *) (sechdrs[sechdrs[relsec].sh_info].sh_addr +
- rel[i].r_offset);
- location32 = (uint32_t *) location16;
- /* 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);
- if (is_reloc_stack_empty()) {
- value = sym->st_value;
- } else {
- value = reloc_stack_pop();
- }
- value += rel[i].r_addend;
- debug("location is %x, value is %x type is %d \n",
- (unsigned int) location32, value,
- ELF32_R_TYPE(rel[i].r_info));
-
- switch (ELF32_R_TYPE(rel[i].r_info)) {
-
- case R_pcrel24:
- case R_pcrel24_jump_l:
- /* Add the value, subtract its postition */
- location16 =
- (uint16_t *) (sechdrs[sechdrs[relsec].sh_info].
- sh_addr + rel[i].r_offset - 2);
- location32 = (uint32_t *) location16;
- value -= (uint32_t) location32;
- value >>= 1;
- debug("value is %x, before %x-%x after %x-%x\n", value,
- *location16, *(location16 + 1),
- (*location16 & 0xff00) | (value >> 16 & 0x00ff),
- value & 0xffff);
- *location16 =
- (*location16 & 0xff00) | (value >> 16 & 0x00ff);
- *(location16 + 1) = value & 0xffff;
- break;
- case R_pcrel12_jump:
- case R_pcrel12_jump_s:
- value -= (uint32_t) location32;
- value >>= 1;
- *location16 = (value & 0xfff);
- break;
- case R_pcrel10:
- value -= (uint32_t) location32;
- value >>= 1;
- *location16 = (value & 0x3ff);
- break;
- case R_luimm16:
- debug("before %x after %x\n", *location16,
- (value & 0xffff));
- tmp = (value & 0xffff);
- *location16 = tmp;
- break;
- case R_huimm16:
- debug("before %x after %x\n", *location16,
- ((value >> 16) & 0xffff));
- tmp = ((value >> 16) & 0xffff);
- *location16 = tmp;
- break;
- case R_rimm16:
- *location16 = (value & 0xffff);
- break;
- case R_byte4_data:
- debug("before %x after %x\n", *location32, value);
- *location32 = value;
- break;
- case R_push:
- reloc_stack_push(value);
- break;
- case R_const:
- reloc_stack_push(rel[i].r_addend);
- break;
- case R_add:
- case R_sub:
- case R_mult:
- case R_div:
- case R_mod:
- case R_lshift:
- case R_rshift:
- case R_and:
- case R_or:
- case R_xor:
- case R_land:
- case R_lor:
- case R_neg:
- case R_comp:
- reloc_stack_operate(ELF32_R_TYPE(rel[i].r_info), mod);
- break;
- default:
- printf("module %s: Unknown relocation: %u\n",
- mod->name, ELF32_R_TYPE(rel[i].r_info));
- return -ENOEXEC;
- }
- }
- return 0;
-}
-
-#if 0
-int
-module_finalize(const Elf_Ehdr * hdr,
- const Elf_Shdr * sechdrs, struct module *mod)
-{
- unsigned int i, strindex = 0, symindex = 0;
- char *secstrings;
-
- secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
-
- for (i = 1; i < hdr->e_shnum; i++) {
- /* Internal symbols and strings. */
- if (sechdrs[i].sh_type == SHT_SYMTAB) {
- symindex = i;
- strindex = sechdrs[i].sh_link;
- }
- }
-
- for (i = 1; i < hdr->e_shnum; i++) {
- const char *strtab = (char *)sechdrs[strindex].sh_addr;
- unsigned int info = sechdrs[i].sh_info;
-
- /* Not a valid relocation section? */
- if (info >= hdr->e_shnum)
- continue;
-
- if ((sechdrs[i].sh_type == SHT_RELA) &&
- ((strcmp(".rela.l1.text", secstrings + sechdrs[i].sh_name) == 0) ||
- ((strcmp(".rela.text", secstrings + sechdrs[i].sh_name) == 0) &&
- (hdr->e_flags & FLG_CODE_IN_L1)))) {
- apply_relocate_add((Elf_Shdr *) sechdrs, strtab,
- symindex, i, mod);
- }
- }
- return 0;
-}
-#endif
-
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