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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); } |