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- /*
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library 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
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #define ELF_USES_RELOCA
- #include <elf.h>
- /* Initialise the GOT */
- #define INIT_GOT(GOT_BASE,MODULE) \
- do { \
- GOT_BASE[1] = (unsigned long) MODULE; \
- GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \
- } while(0)
- /* Here we define the magic numbers that this dynamic loader should accept */
- #define MAGIC1 EM_MICROBLAZE
- #undef MAGIC2
- /* Used for error messages */
- #define ELF_TARGET "microblaze"
- /* Need bootstrap relocations */
- #define ARCH_NEEDS_BOOTSTRAP_RELOCS
- struct elf_resolve;
- unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry);
- #define elf_machine_type_class(type) \
- (((type) == R_MICROBLAZE_JUMP_SLOT || \
- (type) == R_MICROBLAZE_TLSDTPREL32 || \
- (type) == R_MICROBLAZE_TLSDTPMOD32 || \
- (type) == R_MICROBLAZE_TLSTPREL32) \
- * ELF_RTYPE_CLASS_PLT \
- | ((type) == R_MICROBLAZE_COPY) * ELF_RTYPE_CLASS_COPY)
- /* Return the link-time address of _DYNAMIC. Conveniently, this is the
- first element of the GOT. This must be inlined in a function which
- uses global data. */
- static __always_inline Elf32_Addr __attribute__ ((unused))
- elf_machine_dynamic (void)
- {
- Elf32_Addr got_entry_0;
- __asm__ __volatile__(
- "lwi %0,r20,0"
- :"=r"(got_entry_0)
- );
- return got_entry_0;
- }
- /* Return the run-time load address of the shared object. */
- static inline Elf32_Addr
- elf_machine_load_address (void)
- {
- /* Compute the difference between the runtime address of _DYNAMIC as seen
- by a GOTOFF reference, and the link-time address found in the special
- unrelocated first GOT entry. */
- Elf32_Addr dyn;
- __asm__ __volatile__ (
- "addik %0,r20,_DYNAMIC@GOTOFF"
- : "=r"(dyn)
- );
- return dyn - elf_machine_dynamic ();
- }
- static __always_inline void
- elf_machine_relative (Elf32_Addr load_off, const Elf32_Addr rel_addr,
- Elf32_Word relative_count)
- {
- Elf32_Rel * rpnt = (void *) rel_addr;
- do {
- Elf32_Addr *const reloc_addr = (void *) (load_off + (rpnt)->r_offset);
- *reloc_addr += load_off;
- } while (--relative_count);
- }
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