config TARGET_ARCH
string
default "microblaze"
-
-config FORCE_OPTIONS_FOR_ARCH
- bool
- default y
- select ARCH_HAS_NO_MMU
/* V850 backend magic number. Written in the absense of an ABI. */
#define EM_CYGNUS_V850 0x9080
+/* Xilinx Microblaze (unofficial). Note that there is now an official microblaze
+ * magic number, but all the toolchains currently in existence use the old number
+ */
+#define EM_MICROBLAZE_OLD 0xbaab
+
+/* Xilinx Microblaze (official) */
+#define EM_MICROBLAZE 189
+
/* Legal values for e_version (version). */
#define EV_NONE 0 /* Invalid ELF version */
#define DT_C6000_NUM 4
+/* microblaze specific relocs */
+#define R_MICROBLAZE_NONE 0
+#define R_MICROBLAZE_32 1
+#define R_MICROBLAZE_32_PCREL 2
+#define R_MICROBLAZE_64_PCREL 3
+#define R_MICROBLAZE_32_PCREL_LO 4
+#define R_MICROBLAZE_64 5
+#define R_MICROBLAZE_32_LO 6
+#define R_MICROBLAZE_SRO32 7
+#define R_MICROBLAZE_SRW32 8
+#define R_MICROBLAZE_64_NONE 9
+#define R_MICROBLAZE_32_SYM_OP_SYM 10
+#define R_MICROBLAZE_GNU_VTINHERIT 11
+#define R_MICROBLAZE_GNU_VTENTRY 12
+#define R_MICROBLAZE_GOTPC_64 13 /* PC-relative GOT offset */
+#define R_MICROBLAZE_GOT_64 14 /* GOT entry offset */
+#define R_MICROBLAZE_PLT_64 15 /* PLT offset (PC-relative */
+#define R_MICROBLAZE_REL 16 /* adjust by program base */
+#define R_MICROBLAZE_JUMP_SLOT 17 /* create PLT entry */
+#define R_MICROBLAZE_GLOB_DAT 18 /* create GOT entry */
+#define R_MICROBLAZE_GOTOFF_64 19 /* offset relative to GOT */
+#define R_MICROBLAZE_GOTOFF_32 20 /* offset relative to GOT */
+#define R_MICROBLAZE_COPY 21 /* runtime copy */
+#define R_MICROBLAZE_NUM 22
+
#ifdef __cplusplus
}
#endif
* This requires that load_addr must already be defined... */
#if defined(mc68000) || defined(__arm__) || defined(__thumb__) || \
defined(__mips__) || defined(__sh__) || defined(__powerpc__) || \
- defined(__avr32__) || defined(__xtensa__) || defined(__sparc__)
+ defined(__avr32__) || defined(__xtensa__) || defined(__sparc__) || defined(__microblaze__)
# define CONSTANT_STRING_GOT_FIXUP(X) \
if ((X) < (const char *) load_addr) (X) += load_addr
# define NO_EARLY_SEND_STDERR
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/* microblaze shared library loader suppport
+ *
+ * Copyright (C) 2011 Ryan Flux
+ *
+ * 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.
+ */
+
+static const char * const _dl_reltypes_tab[] =
+ {
+ "R_MICROBLAZE_NONE",
+ "R_MICROBLAZE_32",
+ "R_MICROBLAZE_32_PCREL",
+ "R_MICROBLAZE_64_PCREL",
+ "R_MICROBLAZE_32_PCREL_LO",
+ "R_MICROBLAZE_64",
+ "R_MICROBLAZE_32_LO",
+ "R_MICROBLAZE_SRO32",
+ "R_MICROBLAZE_SRW32",
+ "R_MICROBLAZE_64_NONE",
+ "R_MICROBLAZE_32_SYM_OP_SYM",
+ "R_MICROBLAZE_GNU_VTINHERIT",
+ "R_MICROBLAZE_GNU_VTENTRY",
+ "R_MICROBLAZE_GOTPC_64",
+ "R_MICROBLAZE_GOT_64",
+ "R_MICROBLAZE_PLT_64",
+ "R_MICROBLAZE_REL",
+ "R_MICROBLAZE_JUMP_SLOT",
+ "R_MICROBLAZE_GLOB_DAT",
+ "R_MICROBLAZE_GOTOFF_64",
+ "R_MICROBLAZE_GOTOFF_32",
+ "R_MICROBLAZE_COPY",
+ };
--- /dev/null
+/* Startup code for the microblaze platform, based on glibc 2.3.6, dl-machine.h */
+
+/*
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+__asm__ ("\
+ .text\n\
+ .globl _start\n\
+ .type _start,@function\n\
+_start:\n\
+ addk r5,r0,r1\n\
+ addk r3,r0,r0\n\
+1:\n\
+ addik r5,r5,4\n\
+ lw r4,r5,r0\n\
+ bneid r4,1b\n\
+ addik r3,r3,1\n\
+ addik r3,r3,-1\n\
+ addk r5,r0,r1\n\
+ sw r3,r5,r0\n\
+ addik r1,r1,-24\n\
+ sw r15,r1,r0\n\
+ brlid r15,_dl_start\n\
+ nop\n\
+ /* FALLTHRU */\n\
+\n\
+ .globl _dl_start_user\n\
+ .type _dl_start_user,@function\n\
+_dl_start_user:\n\
+ mfs r20,rpc\n\
+ addik r20,r20,_GLOBAL_OFFSET_TABLE_+8\n\
+ lwi r4,r20,_dl_skip_args@GOTOFF\n\
+ lwi r5,r1,24\n\
+ rsubk r5,r4,r5\n\
+ addk r4,r4,r4\n\
+ addk r4,r4,r4\n\
+ addk r1,r1,r4\n\
+ swi r5,r1,24\n\
+ swi r3,r1,20\n\
+ addk r6,r5,r0\n\
+ addk r5,r5,r5\n\
+ addk r5,r5,r5\n\
+ addik r7,r1,28\n\
+ addk r8,r7,r5\n\
+ addik r8,r8,4\n\
+ lwi r5,r1,24\n\
+ lwi r3,r1,20\n\
+ addk r4,r5,r5\n\
+ addk r4,r4,r4\n\
+ addik r6,r1,28\n\
+ addk r7,r6,r4\n\
+ addik r7,r7,4\n\
+ addik r15,r20,_dl_fini@GOTOFF\n\
+ addik r15,r15,-8\n\
+ brad r3\n\
+ addik r1,r1,24\n\
+ nop\n\
+ .size _dl_start_user, . - _dl_start_user\n\
+ .previous");
+
+/*
+ * Get a pointer to the argv array. On many platforms this can be just
+ * the address of the first argument, on other platforms we need to
+ * do something a little more subtle here.
+ */
+#define GET_ARGV(ARGVP, ARGS) ARGVP = (((unsigned long*) ARGS)+1)
+
+/* The ld.so library requires relocations */
+#define ARCH_NEEDS_BOOTSTRAP_RELOCS
+
+static __always_inline
+void PERFORM_BOOTSTRAP_RELOC(ELF_RELOC *rpnt, unsigned long *reloc_addr,
+ unsigned long symbol_addr, unsigned long load_addr, attribute_unused Elf32_Sym *symtab)
+{
+
+ switch (ELF32_R_TYPE(rpnt->r_info))
+ {
+ case R_MICROBLAZE_REL:
+
+ *reloc_addr = load_addr + rpnt->r_addend;
+ break;
+
+ default:
+ _dl_exit(1);
+ break;
+
+ }
+
+}
--- /dev/null
+/* We can't use the real errno in ldso, since it has not yet
+ * been dynamicly linked in yet. */
+#include "sys/syscall.h"
+extern int _dl_errno;
+#undef __set_errno
+#define __set_errno(X) {(_dl_errno) = (X);}
--- /dev/null
+/* elf reloc code for the microblaze platform, based on glibc 2.3.6, dl-machine.h */
+
+/*
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* Use reloca */
+#define ELF_USES_RELOCA
+
+#include <elf.h>
+
+
+/* Initialise the GOT */
+#define INIT_GOT(GOT_BASE,MODULE) \
+do { \
+ GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \
+ GOT_BASE[1] = (unsigned long) MODULE; \
+} while(0)
+
+/* Here we define the magic numbers that this dynamic loader should accept */
+
+#define MAGIC1 EM_MICROBLAZE_OLD
+#undef MAGIC2
+/* Used for error messages */
+#define ELF_TARGET "microblaze"
+
+#define elf_machine_type_class(type) \
+ (((type) == R_MICROBLAZE_JUMP_SLOT) * 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 inline Elf32_Addr
+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);
+}
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/* microblaze ELF shared library loader suppport
+ *
+ * Copyright (c) 1994-2000 Eric Youngdale, Peter MacDonald,
+ * David Engel, Hongjiu Lu and Mitch D'Souza
+ * Copyright (C) 2001-2004 Erik Andersen
+ *
+ * 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.
+ */
+
+#include "ldso.h"
+
+/* 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. */
+
+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;
+ ElfW(Addr) instr_addr;
+ char *symname;
+
+ rel_addr = (char *)tpnt->dynamic_info[DT_JMPREL];
+ this_reloc = (ELF_RELOC *)(rel_addr + reloc_entry);
+ symtab_index = ELF_R_SYM(this_reloc->r_info);
+
+ symtab = (ElfW(Sym) *)tpnt->dynamic_info[DT_SYMTAB];
+ strtab = (char *)tpnt->dynamic_info[DT_STRTAB];
+ symname = strtab + symtab[symtab_index].st_name;
+
+ /* Address of the jump instruction to fix up. */
+ instr_addr = (this_reloc->r_offset + 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);
+ }
+
+#if defined (__SUPPORT_LD_DEBUG__)
+ if ((unsigned long)got_addr < 0x40000000) {
+ if (_dl_debug_bindings) {
+ _dl_dprintf(_dl_debug_file, "\nresolve function: %s", symname);
+ if (_dl_debug_detail)
+ _dl_dprintf(_dl_debug_file,
+ "\tpatched: %x ==> %x @ %x\n",
+ *got_addr, new_addr, got_addr);
+ }
+ }
+ if (!_dl_debug_nofixups)
+#endif
+ *got_addr = new_addr;
+
+ 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;
+
+ /* Parse the relocation information. */
+ rpnt = (ELF_RELOC *)rel_addr;
+ rel_size /= sizeof(ELF_RELOC);
+
+ symtab = (ElfW(Sym) *)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 "
+#if defined (__SUPPORT_LD_DEBUG__)
+ "%s\n", _dl_reltypes(reloc_type));
+#else
+ "%x\n", reloc_type);
+#endif
+ _dl_exit(-res);
+ } else 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;
+ char *symname;
+#if defined USE_TLS && USE_TLS
+ struct elf_resolve *tls_tpnt;
+#endif
+ struct symbol_ref sym_ref;
+ ElfW(Addr) *reloc_addr;
+ ElfW(Addr) symbol_addr;
+#if defined (__SUPPORT_LD_DEBUG__)
+ ElfW(Addr) old_val;
+#endif
+
+ reloc_addr = (ElfW(Addr)*)(tpnt->loadaddr + (unsigned long)rpnt->r_offset);
+ reloc_type = ELF_R_TYPE(rpnt->r_info);
+ symtab_index = ELF_R_SYM(rpnt->r_info);
+ sym_ref.sym = &symtab[symtab_index];
+ sym_ref.tpnt = NULL;
+ symbol_addr = 0;
+ symname = strtab + sym_ref.sym->st_name;
+
+ if (symtab_index) {
+ symbol_addr = (ElfW(Addr))_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.
+ */
+ if (unlikely(!symbol_addr && (ELF_ST_TYPE(sym_ref.sym->st_info) != STT_TLS)
+ && (ELF_ST_BIND(sym_ref.sym->st_info) != STB_WEAK))) {
+ /* This may be non-fatal if called from dlopen. */
+ return 1;
+ }
+#if defined USE_TLS && USE_TLS
+ tls_tpnt = sym_ref.tpnt;
+#endif
+ } else {
+ /* Relocs against STN_UNDEF are usually treated as using a
+ * symbol value of zero, and using the module containing the
+ * reloc itself. */
+ symbol_addr = sym_ref.sym->st_value;
+#if defined USE_TLS && USE_TLS
+ tls_tpnt = tpnt;
+#endif
+ }
+
+
+#if defined (__SUPPORT_LD_DEBUG__)
+ if (reloc_addr) {
+ old_val = *reloc_addr;
+ } else {
+ old_val = 0;
+ }
+#endif
+
+ switch (reloc_type) {
+ case R_MICROBLAZE_NONE:
+ case R_MICROBLAZE_64_NONE:
+ break;
+
+ case R_MICROBLAZE_64:
+ *reloc_addr = symbol_addr + rpnt->r_addend;
+ break;
+
+ case R_MICROBLAZE_32:
+ case R_MICROBLAZE_32_LO:
+ *reloc_addr = symbol_addr + rpnt->r_addend;
+ break;
+
+ case R_MICROBLAZE_32_PCREL:
+ case R_MICROBLAZE_32_PCREL_LO:
+ case R_MICROBLAZE_64_PCREL:
+ case R_MICROBLAZE_SRO32:
+ case R_MICROBLAZE_SRW32:
+ *reloc_addr = symbol_addr + rpnt->r_addend;
+ break;
+
+ case R_MICROBLAZE_GLOB_DAT:
+ case R_MICROBLAZE_JUMP_SLOT:
+ *reloc_addr = symbol_addr + rpnt->r_addend;
+ break;
+/* Handled by elf_machine_relative */
+ case R_MICROBLAZE_REL:
+ *reloc_addr = (unsigned long)tpnt->loadaddr + rpnt->r_addend;
+ break;
+
+ case R_MICROBLAZE_COPY:
+ if (symbol_addr) {
+#if defined (__SUPPORT_LD_DEBUG__)
+ if (_dl_debug_move)
+ _dl_dprintf(_dl_debug_file,
+ "\t%s move %d bytes from %x to %x\n",
+ symname, sym_ref.sym->st_size,
+ symbol_addr, reloc_addr);
+#endif
+
+ _dl_memcpy((char *)reloc_addr,
+ (char *)symbol_addr,
+ sym_ref.sym->st_size);
+ }
+#if defined (__SUPPORT_LD_DEBUG__)
+ else
+ _dl_dprintf(_dl_debug_file, "no symbol_addr to copy !?\n");
+#endif
+ break;
+
+ default:
+ return -1; /* Calls _dl_exit(1). */
+ }
+
+#if defined (__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;
+ int symtab_index;
+ ElfW(Addr) *reloc_addr;
+#if defined (__SUPPORT_LD_DEBUG__)
+ ElfW(Addr) old_val;
+#endif
+
+ (void)scope;
+ symtab_index = ELF_R_SYM(rpnt->r_info);
+ (void)strtab;
+
+ reloc_addr = (ElfW(Addr)*)(tpnt->loadaddr + rpnt->r_offset);
+ reloc_type = ELF_R_TYPE(rpnt->r_info);
+
+#if defined (__SUPPORT_LD_DEBUG__)
+ old_val = *reloc_addr;
+#endif
+
+ switch (reloc_type) {
+ case R_MICROBLAZE_NONE:
+ break;
+ case R_MICROBLAZE_JUMP_SLOT:
+ *reloc_addr += (unsigned long)tpnt->loadaddr;
+ break;
+ default:
+ _dl_exit(1);
+ }
+
+#if defined (__SUPPORT_LD_DEBUG__)
+ if (_dl_debug_reloc && _dl_debug_detail)
+ _dl_dprintf(_dl_debug_file, "\tpatched_lazy: %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);
+}
--- /dev/null
+
+/* This code is used in dl-runtime.c to call the `fixup' function
+ and then redirect to the address it returns. */
+/* We assume that R3 contain relocation offset and R4 contains
+ link_map (_DYNAMIC). This must be consistent with the JUMP_SLOT
+ layout generated by binutils. */
+
+/* Based on glibc 2.3.6, dl-machine.h */
+/*
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+.text
+.align 4
+.globl _dl_linux_resolver
+.globl _dl_linux_resolve
+.type _dl_linux_resolve,@function
+
+_dl_linux_resolve:
+ addik r1,r1,-40
+ swi r5,r1,12
+ swi r6,r1,16
+ swi r7,r1,20
+ swi r8,r1,24
+ swi r9,r1,28
+ swi r10,r1,32
+ swi r15,r1,0
+ addk r5,r0,r4
+ brlid r15, _dl_linux_resolver
+ addk r6,r0,r3; /* delay slot */
+ lwi r10,r1,32
+ lwi r9,r1,28
+ lwi r8,r1,24
+ lwi r7,r1,20
+ lwi r6,r1,16
+ lwi r5,r1,12
+ lwi r15,r1,0
+ brad r3
+ addik r1,r1,40; /* delay slot */
+ .size _dl_linux_resolve, . - _dl_linux_resolve
#elif defined(CONFIG_MICROBLAZE_4K_PAGES)
#define PAGE_SHIFT 12
#else
+#if !defined(CONFIG_MMU)
#warning Missing CONFIG_MICROBLAZE_nnK_PAGES, assuming 4K
+#endif
#define PAGE_SHIFT 12
#endif
* directory of this archive for more details.
*
* Written by Miles Bader <miles@gnu.org>
- */
+ *
+ * PIC code based on glibc 2.3.6 */
+
+/*
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
#define _SETJMP_H
#define _ASM
.globl C_SYMBOL_NAME(setjmp)
.align 4
C_SYMBOL_NAME(setjmp):
+#ifdef __PIC__
+ brid 1f
+#else
braid C_SYMBOL_NAME(__sigsetjmp)
+#endif
addi r6, r0, 1 /* Save the signal mask. */
.globl C_SYMBOL_NAME(_setjmp)
.globl C_SYMBOL_NAME(__sigsetjmp)
C_SYMBOL_NAME(__sigsetjmp):
+1:
/* Save registers relative to r5 (arg0)*/
swi r1, r5, 0 /* stack pointer */
swi r15, r5, 4 /* link register */
swi r31, r5, 68
/* Make a tail call to __sigjmp_save; it takes the same args. */
+#ifdef __PIC__
+ mfs r12,rpc
+ addik r12,r12,_GLOBAL_OFFSET_TABLE_+8
+ lwi r12,r12,__sigjmp_save@GOT
+ brad r12
+ nop
+#else
braid C_SYMBOL_NAME(__sigjmp_save)
nop
+#endif
blti r4, 1f /* is r3 < -125? */
bri 2f /* normal return */
1: sub r3, r3, r0 /* r3 = -r3 */
+#ifdef __PIC__
+ mfs r3,rpc
+ addik r3,r3,_GLOBAL_OFFSET_TABLE_+8
+ lwi r3,r3,C_SYMBOL_NAME(errno)@GOT
+ sw r3, r0, r3
+#else
swi r3, r0, C_SYMBOL_NAME(errno);
+#endif
/* state restore etc */
2: rtsd r15, 8 /* error return */
nop
#define ELFCLASSM ELFCLASS64
#endif
+#if defined(__microblaze__)
+#define MATCH_MACHINE(x) (x == EM_MICROBLAZE_OLD)
+#define ELFCLASSM ELFCLASS32
+#endif
+
#ifndef MATCH_MACHINE
# ifdef __linux__
# include <asm/elf.h>
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