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-rw-r--r--mdk-stage1/insmod-modutils/obj/obj_arm.c318
1 files changed, 0 insertions, 318 deletions
diff --git a/mdk-stage1/insmod-modutils/obj/obj_arm.c b/mdk-stage1/insmod-modutils/obj/obj_arm.c
deleted file mode 100644
index 7a843f947..000000000
--- a/mdk-stage1/insmod-modutils/obj/obj_arm.c
+++ /dev/null
@@ -1,318 +0,0 @@
-/* ARM specific support for Elf loading and relocation.
- Copyright 1996, 1997, 1998 Linux International.
-
- Contributed by Phil Blundell <philb@gnu.org>
- and wms <woody@corelcomputer.com>
- based on the i386 code by Richard Henderson <rth@tamu.edu>
-
- This file is part of the Linux modutils.
-
- 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. */
-
-#ident "$Id$"
-
-#include <string.h>
-#include <assert.h>
-
-#include <module.h>
-#include <obj.h>
-#include <util.h>
-
-
-/*======================================================================*/
-
-struct arm_plt_entry
-{
- int offset;
- int allocated:1;
- int inited:1; // has been set up
-};
-
-struct arm_got_entry
-{
- int offset;
- int allocated : 1;
- unsigned reloc_done : 1;
-};
-
-struct arm_file
-{
- struct obj_file root;
- struct obj_section *plt;
- struct obj_section *got;
-};
-
-struct arm_symbol
-{
- struct obj_symbol root;
- struct arm_plt_entry pltent;
- struct arm_got_entry gotent;
-};
-
-
-/*======================================================================*/
-
-struct obj_file *
-arch_new_file (void)
-{
- struct arm_file *f;
- f = xmalloc(sizeof(*f));
- f->got = NULL;
- return &f->root;
-}
-
-struct obj_section *
-arch_new_section (void)
-{
- return xmalloc(sizeof(struct obj_section));
-}
-
-struct obj_symbol *
-arch_new_symbol (void)
-{
- struct arm_symbol *sym;
- sym = xmalloc(sizeof(*sym));
- memset(&sym->gotent, 0, sizeof(sym->gotent));
- memset(&sym->pltent, 0, sizeof(sym->pltent));
- return &sym->root;
-}
-
-int
-arch_load_proc_section(struct obj_section *sec, int fp)
-{
- /* Assume it's just a debugging section that we can safely
- ignore ... */
- sec->contents = NULL;
-
- return 0;
-}
-
-enum obj_reloc
-arch_apply_relocation (struct obj_file *f,
- struct obj_section *targsec,
- struct obj_section *symsec,
- struct obj_symbol *sym,
- Elf32_Rel *rel,
- Elf32_Addr v)
-{
- struct arm_file *afile = (struct arm_file *)f;
- struct arm_symbol *asym = (struct arm_symbol *)sym;
-
- Elf32_Addr *loc = (Elf32_Addr *)(targsec->contents + rel->r_offset);
- Elf32_Addr dot = targsec->header.sh_addr + rel->r_offset;
- Elf32_Addr got = afile->got ? afile->got->header.sh_addr : 0;
- Elf32_Addr plt = afile->plt ? afile->plt->header.sh_addr : 0;
-
- struct arm_plt_entry *pe;
- unsigned long *ip;
-
- enum obj_reloc ret = obj_reloc_ok;
-
- switch (ELF32_R_TYPE(rel->r_info))
- {
- case R_ARM_NONE:
- break;
-
- case R_ARM_ABS32:
- *loc += v;
- break;
-
- case R_ARM_GOT32:
- /* needs an entry in the .got: set it, once */
- if (! asym->gotent.reloc_done)
- {
- asym->gotent.reloc_done = 1;
- *(Elf32_Addr *)(afile->got->contents + asym->gotent.offset) = v;
- }
- /* make the reloc with_respect_to_.got */
- *loc += asym->gotent.offset;
- break;
-
- /* relative reloc, always to _GLOBAL_OFFSET_TABLE_ (which is .got)
- similar to branch, but is full 32 bits relative */
- case R_ARM_GOTPC:
- assert(got);
- *loc += got - dot;
- break;
-
- case R_ARM_PC24:
- case R_ARM_PLT32:
- /* find the plt entry and initialize it if necessary */
- assert(asym != NULL);
- pe = (struct arm_plt_entry*) &asym->pltent;
- if (! pe->inited)
- {
- ip = (unsigned long *) (afile->plt->contents + pe->offset);
- ip[0] = 0xe51ff004; /* ldr pc,[pc,#-4] */
- ip[1] = v; /* sym@ */
- pe->inited = 1;
- }
-
- /* relative distance to target */
- v -= dot;
- /* if the target is too far away.... */
- if ((int)v < -0x02000000 || (int)v >= 0x02000000)
- {
- /* go via the plt */
- v = plt + pe->offset - dot;
- }
- if (v & 3)
- ret = obj_reloc_dangerous;
-
- /* Convert to words. */
- v >>= 2;
-
- /* merge the offset into the instruction. */
- *loc = (*loc & ~0x00ffffff) | ((v + *loc) & 0x00ffffff);
- break;
-
- /* address relative to the got */
- case R_ARM_GOTOFF:
- assert(got);
- *loc += v - got;
- break;
-
- default:
- printf("Warning: unhandled reloc %d\n",ELF32_R_TYPE(rel->r_info));
- ret = obj_reloc_unhandled;
- break;
- }
-
- return ret;
-}
-
-int
-arch_create_got (struct obj_file *f)
-{
- struct arm_file *afile = (struct arm_file *) f;
- int i;
- struct obj_section *sec, *syms, *strs;
- ElfW(Rel) *rel, *relend;
- ElfW(Sym) *symtab, *extsym;
- const char *strtab, *name;
- struct arm_symbol *intsym;
- struct arm_plt_entry *pe;
- struct arm_got_entry *ge;
- int got_offset = 0, plt_offset = 0;
-
- for (i = 0; i < f->header.e_shnum; ++i)
- {
- sec = f->sections[i];
- if (sec->header.sh_type != SHT_RELM)
- continue;
- syms = f->sections[sec->header.sh_link];
- strs = f->sections[syms->header.sh_link];
-
- rel = (ElfW(RelM) *) sec->contents;
- relend = rel + (sec->header.sh_size / sizeof(ElfW(RelM)));
- symtab = (ElfW(Sym) *) syms->contents;
- strtab = (const char *) strs->contents;
-
- for (; rel < relend; ++rel)
- {
- extsym = &symtab[ELF32_R_SYM(rel->r_info)];
-
- switch(ELF32_R_TYPE(rel->r_info)) {
- case R_ARM_PC24:
- case R_ARM_PLT32:
- if (extsym->st_name)
- name = strtab + extsym->st_name;
- else
- name = f->sections[extsym->st_shndx]->name;
- intsym = (struct arm_symbol *) obj_find_symbol(f, name);
-
- pe = &intsym->pltent;
-
- if (! pe->allocated)
- {
- pe->allocated = 1;
- pe->offset = plt_offset;
- plt_offset += 8;
- pe->inited = 0;
- }
- break;
-
- /* these two don_t need got entries, but they need
- the .got to exist */
- case R_ARM_GOTOFF:
- case R_ARM_GOTPC:
- if (got_offset==0) got_offset = 4;
- break;
-
- case R_ARM_GOT32:
- if (extsym->st_name)
- name = strtab + extsym->st_name;
- else
- name = f->sections[extsym->st_shndx]->name;
- intsym = (struct arm_symbol *) obj_find_symbol(f, name);
-
- ge = (struct arm_got_entry *) &intsym->gotent;
- if (! ge->allocated)
- {
- ge->allocated = 1;
- ge->offset = got_offset;
- got_offset += sizeof(void*);
- }
- break;
-
- default:
- continue;
- }
- }
- }
-
- /* if there was a _GLOBAL_OFFSET_TABLE_, then the .got section
- exists already; find it and use it */
- if (got_offset)
- {
- struct obj_section* sec = obj_find_section(f, ".got");
- if (sec)
- obj_extend_section(sec, got_offset);
- else
- {
- sec = obj_create_alloced_section(f, ".got", 8, got_offset);
- assert(sec);
- }
- afile->got = sec;
- }
-
- if (plt_offset)
- afile->plt = obj_create_alloced_section(f, ".plt", 8, plt_offset);
-
- return 1;
-}
-
-int
-arch_init_module (struct obj_file *f, struct module *mod)
-{
- return 1;
-}
-
-int
-arch_finalize_section_address(struct obj_file *f, Elf32_Addr base)
-{
- int i, n = f->header.e_shnum;
-
- f->baseaddr = base;
- for (i = 0; i < n; ++i)
- f->sections[i]->header.sh_addr += base;
- return 1;
-}
-
-int
-arch_archdata (struct obj_file *fin, struct obj_section *sec)
-{
- return 0;
-}
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