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Diffstat (limited to 'ldso/ldso/sh64/elfinterp.c')
-rw-r--r--ldso/ldso/sh64/elfinterp.c345
1 files changed, 0 insertions, 345 deletions
diff --git a/ldso/ldso/sh64/elfinterp.c b/ldso/ldso/sh64/elfinterp.c
deleted file mode 100644
index 3a59bc4be..000000000
--- a/ldso/ldso/sh64/elfinterp.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/* vi: set sw=8 ts=8: */
-/*
- * ldso/ldso/sh64/elfinterp.c
- *
- * SuperH (sh64) ELF shared library loader suppport
- *
- * Copyright (C) 2003, 2004, 2005 Paul Mundt <lethal@linux-sh.org>
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. The name of the above contributors may not be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/* Program to load an ELF binary on a linux system, and run it.
- References to symbols in sharable libraries can be resolved by either
- an ELF sharable library or a linux style of shared library. */
-
-/* Disclaimer: I have never seen any AT&T source code for SVr4, nor have
- I ever taken any courses on internals. This program was developed using
- information available through the book "UNIX SYSTEM V RELEASE 4,
- Programmers guide: Ansi C and Programming Support Tools", which did
- a more than adequate job of explaining everything required to get this
- working. */
-
-#include "ldso.h"
-
-extern int _dl_linux_resolve(void);
-
-unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry)
-{
- ELF_RELOC *this_reloc;
- char *strtab;
- ElfW(Sym) *symtab;
- int symtab_index;
- char *rel_addr;
- char *new_addr;
- char **got_addr;
- unsigned long instr_addr;
- char *symname;
-
- rel_addr = (char *)tpnt->dynamic_info[DT_JMPREL];
-
- this_reloc = (ELF_RELOC *)(intptr_t)(rel_addr + reloc_entry);
- symtab_index = ELF_R_SYM(this_reloc->r_info);
-
- symtab = (ElfW(Sym) *)(intptr_t)tpnt->dynamic_info[DT_SYMTAB];
- strtab = (char *)tpnt->dynamic_info[DT_STRTAB];
- symname = strtab + symtab[symtab_index].st_name;
-
- /* Address of jump instruction to fix up */
- instr_addr = ((unsigned long)this_reloc->r_offset +
- (unsigned long)tpnt->loadaddr);
- got_addr = (char **)instr_addr;
-
-
- /* Get the address of the GOT entry */
- new_addr = _dl_find_hash(symname, &_dl_loaded_modules->symbol_scope, tpnt, ELF_RTYPE_CLASS_PLT, NULL);
- if (unlikely(!new_addr)) {
- _dl_dprintf(2, "%s: can't resolve symbol '%s'\n",
- _dl_progname, symname);
- _dl_exit(1);
- }
-
-#ifdef __SUPPORT_LD_DEBUG__
- if ((unsigned long)got_addr < 0x20000000) {
- if (_dl_debug_bindings) {
- _dl_dprintf(_dl_debug_file, "\nresolve function: %s",
- symname);
-
- if (_dl_debug_detail)
- _dl_dprintf(_dl_debug_file,
- "\n\tpatched %x ==> %x @ %x\n",
- *got_addr, new_addr, got_addr);
- }
- }
-
- if (!_dl_debug_nofixups)
- *got_addr = new_addr;
-#else
- *got_addr = new_addr;
-#endif
-
- return (unsigned long)new_addr;
-}
-
-static int _dl_parse(struct elf_resolve *tpnt, struct r_scope_elem *scope,
- unsigned long rel_addr, unsigned long rel_size,
- int (*reloc_fnc)(struct elf_resolve *tpnt,
- struct r_scope_elem *scope,
- ELF_RELOC *rpnt, ElfW(Sym) *symtab,
- char *strtab))
-{
- unsigned int i;
- char *strtab;
- ElfW(Sym) *symtab;
- ELF_RELOC *rpnt;
- int symtab_index;
-
- /* Now parse the relocation information */
- rpnt = (ELF_RELOC *)(intptr_t)rel_addr;
- rel_size = rel_size / sizeof(ELF_RELOC);
-
- symtab = (ElfW(Sym) *)(intptr_t)tpnt->dynamic_info[DT_SYMTAB];
- strtab = (char *)tpnt->dynamic_info[DT_STRTAB];
-
- for (i = 0; i < rel_size; i++, rpnt++) {
- int res;
-
- symtab_index = ELF_R_SYM(rpnt->r_info);
- debug_sym(symtab,strtab,symtab_index);
- debug_reloc(symtab,strtab,rpnt);
-
- res = reloc_fnc (tpnt, scope, rpnt, symtab, strtab);
- if (res == 0)
- continue;
-
- _dl_dprintf(2, "\n%s: ",_dl_progname);
-
- if (symtab_index)
- _dl_dprintf(2, "symbol '%s': ",
- strtab + symtab[symtab_index].st_name);
-
- if (unlikely(res < 0)) {
- int reloc_type = ELF_R_TYPE(rpnt->r_info);
-
- _dl_dprintf(2, "can't handle reloc type "
-#ifdef __SUPPORT_LD_DEBUG__
- "%s\n", _dl_reltypes(reloc_type)
-#else
- "%x\n", reloc_type
-#endif
- );
-
- _dl_exit(-res);
- }
- if (unlikely(res > 0)) {
- _dl_dprintf(2, "can't resolve symbol\n");
-
- return res;
- }
- }
-
- return 0;
-}
-
-static int _dl_do_reloc(struct elf_resolve *tpnt,struct r_scope_elem *scope,
- ELF_RELOC *rpnt, ElfW(Sym) *symtab, char *strtab)
-{
- int reloc_type;
- int symtab_index, lsb;
- char *symname;
- unsigned long *reloc_addr;
- unsigned long symbol_addr;
-#ifdef __SUPPORT_LD_DEBUG__
- unsigned long old_val;
-#endif
- struct symbol_ref sym_ref;
-
- reloc_type = ELF_R_TYPE(rpnt->r_info);
- symtab_index = ELF_R_SYM(rpnt->r_info);
- symbol_addr = 0;
- lsb = !!(symtab[symtab_index].st_other & STO_SH5_ISA32);
- sym_ref.sym = &symtab[symtab_index];
- sym_ref.tpnt = NULL;
- symname = strtab + symtab[symtab_index].st_name;
- reloc_addr = (unsigned long *)(intptr_t)
- (tpnt->loadaddr + (unsigned long)rpnt->r_offset);
-
- if (symtab_index) {
- int stb;
-
- symbol_addr = (unsigned long)_dl_find_hash(symname, scope, tpnt,
- elf_machine_type_class(reloc_type), &sym_ref);
-
- /*
- * We want to allow undefined references to weak symbols - this
- * might have been intentional. We should not be linking local
- * symbols here, so all bases should be covered.
- */
- stb = ELF_ST_BIND(symtab[symtab_index].st_info);
-
- if (stb != STB_WEAK && !symbol_addr) {
- _dl_dprintf (2, "%s: can't resolve symbol '%s'\n",
- _dl_progname, symname);
- _dl_exit (1);
- }
- if (_dl_trace_prelink) {
- _dl_debug_lookup (symname, tpnt, &symtab[symtab_index],
- &sym_ref, elf_machine_type_class(reloc_type));
- }
- }
-
-#ifdef __SUPPORT_LD_DEBUG__
- old_val = *reloc_addr;
-#endif
-
- switch (reloc_type) {
- case R_SH_NONE:
- break;
- case R_SH_COPY:
- _dl_memcpy((char *)reloc_addr,
- (char *)symbol_addr, symtab[symtab_index].st_size);
- break;
- case R_SH_DIR32:
- case R_SH_GLOB_DAT:
- case R_SH_JMP_SLOT:
- *reloc_addr = (symbol_addr + rpnt->r_addend) | lsb;
- break;
- case R_SH_REL32:
- *reloc_addr = symbol_addr + rpnt->r_addend -
- (unsigned long)reloc_addr;
- break;
- case R_SH_RELATIVE:
- *reloc_addr = (unsigned long)tpnt->loadaddr + rpnt->r_addend;
- break;
- case R_SH_RELATIVE_LOW16:
- case R_SH_RELATIVE_MEDLOW16:
- {
- unsigned long word, value;
-
- word = (unsigned long)reloc_addr & ~0x3fffc00;
- value = (unsigned long)tpnt->loadaddr + rpnt->r_addend;
-
- if (reloc_type == R_SH_RELATIVE_MEDLOW16)
- value >>= 16;
-
- word |= (value & 0xffff) << 10;
- *reloc_addr = word;
-
- break;
- }
- case R_SH_IMM_LOW16:
- case R_SH_IMM_MEDLOW16:
- {
- unsigned long word, value;
-
- word = (unsigned long)reloc_addr & ~0x3fffc00;
- value = (symbol_addr + rpnt->r_addend) | lsb;
-
- if (reloc_type == R_SH_IMM_MEDLOW16)
- value >>= 16;
-
- word |= (value & 0xffff) << 10;
- *reloc_addr = word;
-
- break;
- }
- case R_SH_IMM_LOW16_PCREL:
- case R_SH_IMM_MEDLOW16_PCREL:
- {
- unsigned long word, value;
-
- word = (unsigned long)reloc_addr & ~0x3fffc00;
- value = symbol_addr + rpnt->r_addend -
- (unsigned long)reloc_addr;
-
- if (reloc_type == R_SH_IMM_MEDLOW16_PCREL)
- value >>= 16;
-
- word |= (value & 0xffff) << 10;
- *reloc_addr = word;
-
- break;
- }
- default:
- return -1; /*call _dl_exit(1) */
- }
-
-#ifdef __SUPPORT_LD_DEBUG__
- if (_dl_debug_reloc && _dl_debug_detail)
- _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x\n",
- old_val, *reloc_addr, reloc_addr);
-#endif
-
- return 0;
-}
-
-static int _dl_do_lazy_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope,
- ELF_RELOC *rpnt, ElfW(Sym) *symtab, char *strtab)
-{
- int reloc_type, symtab_index, lsb;
- unsigned long *reloc_addr;
-#ifdef __SUPPORT_LD_DEBUG__
- unsigned long old_val;
-#endif
-
- reloc_type = ELF_R_TYPE(rpnt->r_info);
- symtab_index = ELF_R_SYM(rpnt->r_info);
- lsb = !!(symtab[symtab_index].st_other & STO_SH5_ISA32);
- reloc_addr = (unsigned long *)(intptr_t)
- (tpnt->loadaddr + (unsigned long)rpnt->r_offset);
-
-#ifdef __SUPPORT_LD_DEBUG__
- old_val = *reloc_addr;
-#endif
-
- switch (reloc_type) {
- case R_SH_NONE:
- break;
- case R_SH_JMP_SLOT:
- *reloc_addr += (unsigned long)tpnt->loadaddr | lsb;
- break;
- default:
- return -1; /*call _dl_exit(1) */
- }
-
-#ifdef __SUPPORT_LD_DEBUG__
- if (_dl_debug_reloc && _dl_debug_detail)
- _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x\n",
- old_val, *reloc_addr, reloc_addr);
-#endif
-
- return 0;
-}
-
-void _dl_parse_lazy_relocation_information(struct dyn_elf *rpnt,
- unsigned long rel_addr, unsigned long rel_size)
-{
- (void)_dl_parse(rpnt->dyn, NULL, rel_addr, rel_size, _dl_do_lazy_reloc);
-}
-
-int _dl_parse_relocation_information(struct dyn_elf *rpnt,
- struct r_scope_elem *scope, unsigned long rel_addr, unsigned long rel_size)
-{
- return _dl_parse(rpnt->dyn, scope, rel_addr, rel_size, _dl_do_reloc);
-}
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