add new architecture support for or1k

Information about Openrisc:
http://opencores.org/or1k/Main_Page
Integrated from:
https://github.com/openrisc/uClibc-or1k

6 files changed, 652 insertions, 0 deletions

diff --git a/ldso/ldso/or1k/dl-debug.h b/ldso/ldso/or1k/dl-debug.h
new file mode 100644
index 000000000..d925577cd
--- /dev/null
+++ b/ldso/ldso/or1k/dl-debug.h
@@ -0,0 +1,53 @@
+/* OpenRISC 1000 shared library loader suppport
+ *
+ * Copyright (C) 2012 Stefan Kristansson
+ *
+ * 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_OR1K_NONE",
+		"R_OR1K_32",
+		"R_OR1K_16",
+		"R_OR1K_8",
+		"R_OR1K_LO_16_IN_INSN",
+		"R_OR1K_HI_16_IN_INSN",
+		"R_OR1K_INSN_REL_26",
+		"R_OR1K_GNU_VTENTRY",
+		"R_OR1K_GNU_VTINHERIT",
+		"R_OR1K_32_PCREL",
+		"R_OR1K_16_PCREL",
+		"R_OR1K_8_PCREL",
+		"R_OR1K_GOTPC_HI16",
+		"R_OR1K_GOTPC_LO16",
+		"R_OR1K_GOT16",
+		"R_OR1K_PLT26",
+		"R_OR1K_GOTOFF_HI16",
+		"R_OR1K_GOTOFF_LO16",
+		"R_OR1K_COPY",
+		"R_OR1K_GLOB_DAT",
+		"R_OR1K_JMP_SLOT",
+		"R_OR1K_RELATIVE",
+	};
diff --git a/ldso/ldso/or1k/dl-startup.h b/ldso/ldso/or1k/dl-startup.h
new file mode 100644
index 000000000..3c99bcd5c
--- /dev/null
+++ b/ldso/ldso/or1k/dl-startup.h
@@ -0,0 +1,106 @@
+/* Startup code for the OpenRISC 1000 platform,
+   based on microblaze implementation */
+/*
+   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\
+	.hidden _start\n\
+_start:\n\
+	l.ori	r3, r9, 0\n\
+	l.ori	r3, r1, 0\n\
+	l.movhi	r11, 0\n\
+1:\n\
+	l.addi	r3, r3, 4\n\
+	l.lwz	r12, 0(r3)\n\
+	l.sfnei	r12, 0\n\
+	l.addi	r11, r11, 1\n\
+	l.bf	1b\n\
+	 l.nop\n\
+	l.ori	r3, r11, 0\n\
+	l.ori	r3, r1, 0\n\
+	l.addi	r11, r11, -1\n\
+	/* store argument counter to stack */\n\
+	l.sw	0(r3), r11\n\
+	l.addi	r1, r1, -24\n\
+	l.sw	0(r1), r9\n\
+\n\
+	l.jal	.LPC0\n\
+#ifndef __OR1K_NODELAY__\n\
+	 l.nop\n\
+#endif\n\
+	/* Load the PIC register */\n\
+.LPC0:\n\
+	l.movhi	r16, gotpchi(_GLOBAL_OFFSET_TABLE_+(.-.LPC0))\n\
+	l.ori	r16, r16, gotpclo(_GLOBAL_OFFSET_TABLE_+(.-.LPC0))\n\
+	l.add	r16, r16, r9\n\
+\n\
+	l.jal	_dl_start\n\
+	 l.nop\n\
+	/* FALLTHRU */\n\
+\n\
+	.globl _dl_start_user\n\
+	.type _dl_start_user,@function\n\
+_dl_start_user:\n\
+	l.movhi	r12, gotoffhi(_dl_skip_args)\n\
+	l.ori	r12, r12, gotofflo(_dl_skip_args)\n\
+	l.add	r12, r12, r16\n\
+	l.lwz	r12, 0(r12)\n\
+	l.lwz	r3, 24(r1)\n\
+\n\
+	l.movhi	r9, gotoffhi(_dl_fini)\n\
+	l.ori	r9, r9, gotofflo(_dl_fini)\n\
+	l.add	r9, r9, r16\n\
+\n\
+	l.addi	r9, r9, -8\n\
+	l.addi	r1, r1, 24\n\
+	l.jr	r11\n\
+	l.nop\n\
+	.size _dl_start_user, . - _dl_start_user\n\
+	.previous\n\
+");
+/*
+ * 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 (ELF_R_TYPE(rpnt->r_info))
+	{
+		case R_OR1K_RELATIVE:
+
+			*reloc_addr = load_addr + rpnt->r_addend;
+			break;
+
+		default:
+			_dl_exit(1);
+			break;
+
+	}
+
+}
diff --git a/ldso/ldso/or1k/dl-syscalls.h b/ldso/ldso/or1k/dl-syscalls.h
new file mode 100644
index 000000000..f40c4fd31
--- /dev/null
+++ b/ldso/ldso/or1k/dl-syscalls.h
@@ -0,0 +1 @@
+/* stub for arch-specific syscall issues */
diff --git a/ldso/ldso/or1k/dl-sysdep.h b/ldso/ldso/or1k/dl-sysdep.h
new file mode 100644
index 000000000..21ca028c8
--- /dev/null
+++ b/ldso/ldso/or1k/dl-sysdep.h
@@ -0,0 +1,105 @@
+/* elf reloc code for the or1k 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_OR1K
+#undef  MAGIC2
+/* Used for error messages */
+#define ELF_TARGET "or1k"
+
+#define elf_machine_type_class(type) \
+  (((type) == R_OR1K_JMP_SLOT) * ELF_RTYPE_CLASS_PLT \
+   | ((type) == R_OR1K_COPY) * ELF_RTYPE_CLASS_COPY)
+
+static inline Elf32_Addr *
+or1k_get_got (void)
+{
+	Elf32_Addr *got;
+	Elf32_Addr linkreg;
+	__asm__("l.ori   %0, r9, 0\n"
+		"l.jal	.LPC1\n"
+#ifndef __OR1K_NODELAY__
+		"l.nop\n"
+#endif
+	".LPC1:\n"
+		"l.movhi	%1, gotpchi(_GLOBAL_OFFSET_TABLE_+(.-.LPC1))\n"
+		"l.ori	%1, %1, gotpclo(_GLOBAL_OFFSET_TABLE_+(.-.LPC1))\n"
+		"l.add	%1, %1, r9\n"
+		"l.ori	r9, %0, 0\n"
+		: "=r" (linkreg), "=r" (got));
+	return got;
+}
+
+/* Return the link-time address of _DYNAMIC.  Conveniently, this is the
+   first element of the GOT. */
+static inline Elf32_Addr
+elf_machine_dynamic (void)
+{
+  Elf32_Addr *got = or1k_get_got();
+  return *got;
+}
+
+
+/* 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;
+  Elf32_Addr *got = or1k_get_got();
+
+  __asm__ __volatile__ (
+    "l.movhi %0, gotoffhi(_DYNAMIC);"
+    "l.ori %0, %0, gotofflo(_DYNAMIC);"
+    "l.add %0, %0, %1;"
+    : "=r"(dyn), "=r"(got)
+    );
+  return dyn - *got;
+}
+
+
+
+static __always_inline void
+elf_machine_relative (Elf32_Addr load_off, const Elf32_Addr rel_addr,
+		      Elf32_Word relative_count)
+{
+	Elf32_Rela * rpnt = (void *) rel_addr;
+	--rpnt;
+	do {
+		Elf32_Addr *const reloc_addr = (void *) (load_off +
+							 (++rpnt)->r_offset);
+
+		*reloc_addr += load_off;
+	} while (--relative_count);
+}
diff --git a/ldso/ldso/or1k/elfinterp.c b/ldso/ldso/or1k/elfinterp.c
new file mode 100644
index 000000000..928e95ba1
--- /dev/null
+++ b/ldso/ldso/or1k/elfinterp.c
@@ -0,0 +1,333 @@
+/* vi: set sw=4 ts=4: */
+/* OpenRISC 1000 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' in lib '%s'.\n",
+			    _dl_progname, symname, tpnt->libname);
+		_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
+
+	struct unaligned {
+		Elf32_Addr x;
+	} __attribute__ ((packed, may_alias));
+
+	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 = ((struct unaligned *)reloc_addr)->x;
+	} else {
+		old_val = 0;
+	}
+#endif
+
+	switch (reloc_type) {
+		case R_OR1K_NONE:
+			break;
+
+		case R_OR1K_8:
+		case R_OR1K_16:
+		case R_OR1K_32:
+			/* Support relocations on mis-aligned offsets.  */
+			((struct unaligned *)reloc_addr)->x = symbol_addr +
+				rpnt->r_addend;
+			break;
+
+		case R_OR1K_8_PCREL:
+		case R_OR1K_16_PCREL:
+		case R_OR1K_32_PCREL:
+		case R_OR1K_INSN_REL_26:
+			*reloc_addr = symbol_addr + rpnt->r_addend;
+			break;
+
+		case R_OR1K_GLOB_DAT:
+		case R_OR1K_JMP_SLOT:
+			*reloc_addr = symbol_addr + rpnt->r_addend;
+			break;
+/* Handled by elf_machine_relative */
+		case R_OR1K_RELATIVE:
+			*reloc_addr = (unsigned long)tpnt->loadaddr + rpnt->r_addend;
+			break;
+
+		case R_OR1K_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, ((struct unaligned *)reloc_addr)->x,
+			    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_OR1K_NONE:
+			break;
+		case R_OR1K_JMP_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);
+}
diff --git a/ldso/ldso/or1k/resolve.S b/ldso/ldso/or1k/resolve.S
new file mode 100644
index 000000000..4a156d529
--- /dev/null
+++ b/ldso/ldso/or1k/resolve.S
@@ -0,0 +1,54 @@
+/* This code is used in dl-runtime.c to call the `fixup' function
+   and then redirect to the address it returns. */
+/* We assume that R11 contain relocation offset and R12 contains
+   link_map (_DYNAMIC). This must be consistent with the JUMP_SLOT
+   layout generated by binutils. */
+
+/* Based on microblaze implementation */
+/*
+   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:
+	l.addi	r1, r1, -32
+	l.sw	0(r1), r9
+	/* save function arguments */
+	l.sw	8(r1), r3
+	l.sw	12(r1), r4
+	l.sw	16(r1), r5
+	l.sw	20(r1), r6
+	l.sw	24(r1), r7
+	l.sw	28(r1), r8
+	l.ori	r3, r12, 0
+	l.ori	r4, r11, 0
+	l.jal	_dl_linux_resolver
+	 l.nop
+	l.lwz	r8, 28(r1)
+	l.lwz	r7, 24(r1)
+	l.lwz	r6, 20(r1)
+	l.lwz	r5, 16(r1)
+	l.lwz	r4, 12(r1)
+	l.lwz	r3, 8(r1)
+	l.lwz	r9, 0(r1)
+	l.addi	r1, r1, 32
+	l.jr	r11
+	 l.nop
+	.size _dl_linux_resolve, . - _dl_linux_resolve