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author | Mystery Man <unknown@mandriva.org> | 2002-08-22 15:26:01 +0000 |
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committer | Mystery Man <unknown@mandriva.org> | 2002-08-22 15:26:01 +0000 |
commit | add076e220fdffdeb6de5ae9a9efb6c7e3e0303e (patch) | |
tree | 956c3d91d4b8cfc7851ad7e02301fe5e6db1aa66 /mdk-stage1/insmod-modutils/obj/obj_alpha.c | |
parent | 76761ff24d3358147c214490defbab4910201d73 (diff) | |
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This commit was manufactured by cvs2svn to create tag 'V1_1_9_16mdk'.V1_1_9_16mdk
Diffstat (limited to 'mdk-stage1/insmod-modutils/obj/obj_alpha.c')
-rw-r--r-- | mdk-stage1/insmod-modutils/obj/obj_alpha.c | 305 |
1 files changed, 0 insertions, 305 deletions
diff --git a/mdk-stage1/insmod-modutils/obj/obj_alpha.c b/mdk-stage1/insmod-modutils/obj/obj_alpha.c deleted file mode 100644 index 4006b3442..000000000 --- a/mdk-stage1/insmod-modutils/obj/obj_alpha.c +++ /dev/null @@ -1,305 +0,0 @@ -/* Alpha specific support for Elf loading and relocation. - Copyright 1996, 1997 Linux International. - - Contributed 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 alpha_got_entry -{ - struct alpha_got_entry *next; - ElfW(Addr) addend; - int offset; - int reloc_done; -}; - -struct alpha_file -{ - struct obj_file root; - struct obj_section *got; -}; - -struct alpha_symbol -{ - struct obj_symbol root; - struct alpha_got_entry *got_entries; -}; - - -/*======================================================================*/ - -struct obj_file * -arch_new_file (void) -{ - struct alpha_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 alpha_symbol *sym; - sym = xmalloc(sizeof(*sym)); - sym->got_entries = NULL; - 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, - Elf64_Rela *rel, - Elf64_Addr v) -{ - struct alpha_file *af = (struct alpha_file *)f; - struct alpha_symbol *asym = (struct alpha_symbol *)sym; - - unsigned long *lloc = (unsigned long *)(targsec->contents + rel->r_offset); - unsigned int *iloc = (unsigned int *)lloc; - Elf64_Addr dot = targsec->header.sh_addr + rel->r_offset; - Elf64_Addr gp = af->got->header.sh_addr + 0x8000; - - enum obj_reloc ret = obj_reloc_ok; - - switch (ELF64_R_TYPE(rel->r_info)) - { - case R_ALPHA_NONE: - case R_ALPHA_LITUSE: - break; - - case R_ALPHA_REFQUAD: - *lloc += v; - break; - - case R_ALPHA_GPREL32: - v -= gp; - if ((Elf64_Sxword)v > 0x7fffffff - || (Elf64_Sxword)v < -(Elf64_Sxword)0x80000000) - ret = obj_reloc_overflow; - *iloc = v; - break; - - case R_ALPHA_LITERAL: - { - struct alpha_got_entry *gotent; - - assert(asym != NULL); - gotent = asym->got_entries; - while (gotent->addend != rel->r_addend) - gotent = gotent->next; - - if (!gotent->reloc_done) - { - *(unsigned long *)(af->got->contents + gotent->offset) = v; - gotent->reloc_done = 1; - } - - *iloc = (*iloc & ~0xffff) | ((gotent->offset - 0x8000) & 0xffff); - } - break; - - case R_ALPHA_GPDISP: - { - unsigned int *p_ldah, *p_lda; - unsigned int i_ldah, i_lda, hi, lo; - - p_ldah = iloc; - p_lda = (unsigned int *)((char *)iloc + rel->r_addend); - i_ldah = *p_ldah; - i_lda = *p_lda; - - /* Make sure the instructions are righteous. */ - if ((i_ldah >> 26) != 9 || (i_lda >> 26) != 8) - ret = obj_reloc_dangerous; - - /* Extract the existing addend. */ - v = (i_ldah & 0xffff) << 16 | (i_lda & 0xffff); - v = (v ^ 0x80008000) - 0x80008000; - - v += gp - dot; - - if ((Elf64_Sxword)v >= 0x7fff8000 - || (Elf64_Sxword)v < -(Elf64_Sxword)0x80000000) - ret = obj_reloc_overflow; - - /* Modify the instructions and finish up. */ - lo = v & 0xffff; - hi = ((v >> 16) + ((v >> 15) & 1)) & 0xffff; - - *p_ldah = (i_ldah & 0xffff0000) | hi; - *p_lda = (i_lda & 0xffff0000) | lo; - } - break; - - case R_ALPHA_BRADDR: - v -= dot + 4; - if (v % 4) - ret = obj_reloc_dangerous; - else if ((Elf64_Sxword)v > 0x3fffff - || (Elf64_Sxword)v < -(Elf64_Sxword)0x400000) - ret = obj_reloc_overflow; - v /= 4; - - *iloc = (*iloc & ~0x1fffff) | (v & 0x1fffff); - break; - - case R_ALPHA_HINT: - v -= dot + 4; - if (v % 4) - ret = obj_reloc_dangerous; - v /= 4; - - *iloc = (*iloc & ~0x3fff) | (v & 0x3fff); - break; - - default: - ret = obj_reloc_unhandled; - break; - } - - return ret; -} - -int -arch_create_got (struct obj_file *f) -{ - struct alpha_file *af = (struct alpha_file *)f; - int i, n, offset = 0; - - n = af->root.header.e_shnum; - for (i = 0; i < n; ++i) - { - struct obj_section *relsec, *symsec, *strsec; - Elf64_Rela *rel, *relend; - Elf64_Sym *symtab; - const char *strtab; - - relsec = af->root.sections[i]; - if (relsec->header.sh_type != SHT_RELA) - continue; - - symsec = af->root.sections[relsec->header.sh_link]; - strsec = af->root.sections[symsec->header.sh_link]; - - rel = (Elf64_Rela *)relsec->contents; - relend = rel + (relsec->header.sh_size / sizeof(Elf64_Rela)); - symtab = (Elf64_Sym *)symsec->contents; - strtab = (const char *)strsec->contents; - - for (; rel < relend; ++rel) - { - struct alpha_got_entry *ent; - Elf64_Sym *extsym; - struct alpha_symbol *intsym; - const char *name; - - if (ELF64_R_TYPE(rel->r_info) != R_ALPHA_LITERAL) - continue; - - extsym = &symtab[ELF64_R_SYM(rel->r_info)]; - if (extsym->st_name) - name = strtab + extsym->st_name; - else - name = f->sections[extsym->st_shndx]->name; - intsym = (struct alpha_symbol *)obj_find_symbol(&af->root, name); - - for (ent = intsym->got_entries; ent ; ent = ent->next) - if (ent->addend == rel->r_addend) - goto found; - - ent = xmalloc(sizeof(*ent)); - ent->addend = rel->r_addend; - ent->offset = offset; - ent->reloc_done = 0; - ent->next = intsym->got_entries; - intsym->got_entries = ent; - offset += 8; - - found:; - } - } - - if (offset > 0x10000) - { - error(".got section overflow: %#x > 0x10000", offset); - return 0; - } - - /* We always want a .got section so that we always have a GP for - use with GPDISP and GPREL32 relocs. Besides, if the section - is empty we don't use up space anyway. */ - af->got = obj_create_alloced_section(&af->root, ".got", 8, offset); - - return 1; -} - -int -arch_init_module (struct obj_file *f, struct module *mod) -{ - struct alpha_file *af = (struct alpha_file *)f; - - mod->gp = af->got->header.sh_addr + 0x8000; - - return 1; -} - -int -arch_finalize_section_address(struct obj_file *f, Elf64_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; -} |