Support for i386 ELF. Not an indication that the change is going to be made,

just so that these files are maintained in the tree.

5 files changed, 776 insertions, 0 deletions

diff --git a/libexec/ld.so/i386/Makefile.inc b/libexec/ld.so/i386/Makefile.inc
new file mode 100644
index 00000000000..28573b34aec
--- /dev/null
+++ b/libexec/ld.so/i386/Makefile.inc
@@ -0,0 +1,4 @@
+#	$OpenBSD: Makefile.inc,v 1.1 2002/08/23 23:02:48 drahn Exp $
+
+CFLAGS += -fPIC
+AFLAGS += -fpic
diff --git a/libexec/ld.so/i386/archdep.h b/libexec/ld.so/i386/archdep.h
new file mode 100644
index 00000000000..006d876c739
--- /dev/null
+++ b/libexec/ld.so/i386/archdep.h
@@ -0,0 +1,88 @@
+/*	$OpenBSD: archdep.h,v 1.1 2002/08/23 23:02:48 drahn Exp $ */
+
+/*
+ * Copyright (c) 1998 Per Fogelstrom, Opsycon AB
+ *
+ * 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. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed under OpenBSD by
+ *	Per Fogelstrom, Opsycon AB, Sweden.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ *
+ */
+
+#ifndef _I386_ARCHDEP_H_
+#define _I386_ARCHDEP_H_
+
+#define	DL_MALLOC_ALIGN	8	/* Arch constraint or otherwise */
+
+#define	MACHID	EM_386		/* ELF e_machine ID value checked */
+
+#define	RELTYPE	Elf32_Rela
+#define	RELSIZE	sizeof(Elf32_Rela)
+
+#include <sys/mman.h>
+#include <elf_abi.h>
+#include <machine/reloc.h>
+#include "syscall.h"
+#include "util.h"
+
+static inline void *
+_dl_mmap(void *addr, unsigned int len, unsigned int prot,
+	unsigned int flags, int fd, off_t offset)
+{
+	return((void *)_dl__syscall((quad_t)SYS_mmap, addr, len, prot,
+		flags, fd, 0, offset));
+}
+
+static inline void
+RELOC_REL(Elf32_Rel *r, const Elf32_Sym *s, Elf32_Addr *p, unsigned long v)
+{
+
+	if (ELF32_R_TYPE(r->r_info) == RELOC_RELATIVE) {
+		*p += v;
+	} else if (ELF32_R_TYPE(r->r_info) == RELOC_GLOB_DAT) {
+		*p += v + s->st_value;
+	} else {
+		_dl_printf("unknown bootstrap relocation\n");
+		_dl_exit(6);
+	}
+}
+
+static inline void
+RELOC_RELA(Elf32_Rela *r, const Elf32_Sym *s, Elf32_Addr *p, unsigned long v)
+{
+	/* does i386 use RELA type relocations? - XXX */
+
+	if (ELF32_R_TYPE(r->r_info) == RELOC_RELATIVE) {
+		*p = v + r->r_addend;
+	} else if (ELF32_R_TYPE(r->r_info) == RELOC_GLOB_DAT) {
+		*p = v + s->st_value + r->r_addend;
+	} else {
+		_dl_printf("unknown bootstrap relocation\n");
+		_dl_exit(6);
+	}
+}
+
+#endif /* _I386_ARCHDEP_H_ */
diff --git a/libexec/ld.so/i386/ldasm.S b/libexec/ld.so/i386/ldasm.S
new file mode 100644
index 00000000000..b86048d3768
--- /dev/null
+++ b/libexec/ld.so/i386/ldasm.S
@@ -0,0 +1,267 @@
+/*	$OpenBSD: ldasm.S,v 1.1 2002/08/23 23:02:48 drahn Exp $ */
+
+/*
+ * Copyright (c) 2002 Dale Rahn
+ *
+ * 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. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed under OpenBSD by
+ *	Dale Rahn.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WsdfARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR 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.
+ *
+ */
+
+
+#define DL_DATA_SIZE      (16*4)
+#include <sys/syscall.h>
+#include <machine/asm.h>
+
+	.text
+	.align  4
+	.globl  _dl_start
+	.type   _dl_start,@function
+_dl_start:
+	movl	%esp,%eax		# save stack pointer for _rtld
+	pushl	%ebx			# save ps_strings
+	subl	$DL_DATA_SIZE,%esp	# allocate dl_data
+	movl	%esp,%ebx
+	movl	%ebx,%edi		# save dl_data arg for dl_boot
+	pushl	%ebx			# push dl_data for dl_boot_bind
+
+	pushl	$0			# dynp
+	pushl	$0			# push dummy for loff
+
+	mov	%eax, %esi		# save stack for dl_boot
+
+	pushl	%eax			# load saved SP for dl_boot_bind
+
+	call	_dl_boot_bind@PLT	# _dl_boot_bind(sp,loff,dl_data)
+
+	pushl	%edi			# push saved dl_data
+	movl	%edi,%ebp
+	movl	(7*4)(%ebp),%eax
+	pushl	%eax			# push loff from dl_data
+
+	movl	%esi,%ebp
+	movl	$4,%eax
+	imull	0(%ebp),%eax
+	addl	$8,%eax
+	addl	%ebp,%eax
+	push	%eax			# push envp
+
+	leal	4(%ebp),%eax
+	push	%eax			# push argv
+
+	call	_dl_boot@PLT		# _dl_boot(argv,envp,loff,dl_data)
+
+	addl	$4*6,%esp			# pop args
+
+	addl	$DL_DATA_SIZE,%esp	# return dl_data
+
+	popl	%ebx			# %ebx = ps_strings - XXXDSR
+	popl	%edx			# %edx = cleanup - XXXDSR
+	popl	%ecx			# %ecx = obj_main - XXXDSR
+	jmp	*%eax
+
+	.section	".text"
+	.align		4
+	.global _dl_close
+	.type _dl_close,@function
+_dl_close:
+	mov	$SYS_close, %eax
+	int	$0x80
+	jb	1f
+	ret
+
+	.section	".text"
+	.align		4
+	.global _dl_exit
+	.type _dl_exit,@function
+_dl_exit:
+	mov	$SYS_exit, %eax
+	int	$0x80
+	ret
+
+
+	.section	".text"
+	.align		4
+	.global _dl_issetugid
+	.type _dl_issetugid,@function
+_dl_issetugid:
+	mov	$SYS_issetugid, %eax
+	int	$0x80
+	jb	1f		 /* error: result = -errno */
+	ret
+
+
+	.section	".text"
+	.align		4
+	.global _dl__syscall
+	.type _dl__syscall,@function
+_dl__syscall:
+	mov	$SYS___syscall, %eax
+	int	$0x80
+	jb	1f		 /* error: result = -errno */
+	ret
+
+
+	.section	".text"
+	.align		4
+	.global _dl_munmap
+	.type _dl_munmap,@function
+_dl_munmap:
+	mov	$SYS_munmap, %eax
+	int	$0x80
+	jb	1f		 /* error: result = -errno */
+	ret
+
+
+	.section	".text"
+	.align		4
+	.global _dl_mprotect
+	.type _dl_mprotect,@function
+_dl_mprotect:
+	mov	$SYS_mprotect, %eax
+	int	$0x80
+	jb	1f		 /* error: result = -errno */
+	ret
+
+
+	.section	".text"
+	.align		4
+	.global _dl_open
+	.type _dl_open,@function
+_dl_open:
+	mov	$SYS_open, %eax
+	int	$0x80
+	jb	1f		 /* error: result = -errno */
+	ret
+
+
+	.section	".text"
+	.align		4
+	.global _dl_read
+	.type _dl_read,@function
+_dl_read:
+	mov	$SYS_read, %eax
+	int	$0x80
+	jb	1f		 /* error: result = -errno */
+	ret
+
+
+	.section	".text"
+	.align		4
+	.global _dl_write
+	.type _dl_write,@function
+_dl_write:
+	mov	$SYS_write, %eax
+	int	$0x80
+	jb	1f		 /* error: result = -errno */
+	ret
+
+
+	.section	".text"
+	.align		4
+	.global _dl_stat
+	.type _dl_stat,@function
+_dl_stat:
+	mov	$SYS_stat, %eax
+	int	$0x80
+	jb	1f		 /* error: result = -errno */
+	ret
+
+
+	.section	".text"
+	.align		4
+	.global _dl_fstat
+	.type _dl_fstat,@function
+_dl_fstat:
+	mov	$SYS_fstat, %eax
+	int	$0x80
+	jb	1f		 /* error: result = -errno */
+	ret
+
+
+	.section	".text"
+	.align		4
+	.global _dl_fcntl
+	.type _dl_fcntl,@function
+_dl_fcntl:
+	mov	$SYS_fcntl, %eax
+	int	$0x80
+	jb	1f		 /* error: result = -errno */
+	ret
+
+
+	.section	".text"
+	.align		4
+	.global _dl_getdirentries
+	.type _dl_getdirentries,@function
+_dl_getdirentries:
+	mov	$SYS_getdirentries, %eax
+	int	$0x80
+	jb	1f		 /* error: result = -errno */
+	ret
+
+1:
+	/* error: result = -errno; - handled here. */
+	neg	%eax
+	ret
+
+
+	.align 4
+	.global _dl_bind_start
+	.type _dl_bind_start,@function
+_dl_bind_start:
+	pushf				# save registers
+	pushl   %eax
+	pushl   %ecx
+	pushl   %edx
+	pushl   %ebx
+	pushl   %ebp
+	pushl   %esi
+	pushl   %edi
+	pushl   %ds
+	pushl   %es
+ 
+	pushl   44(%esp)		# Copy of reloff
+	pushl   44(%esp)		# Copy of obj
+	call    _dl_bind@PLT		# Call the binder
+	addl    $8,%esp			# pop binder args
+	movl    %eax,44(%esp)		# Store function to be called in obj
+ 
+	popl    %es			# restore registers
+	popl    %ds
+	popl    %edi
+	popl    %esi
+	popl    %ebp
+	popl    %ebx
+	popl    %edx
+	popl    %ecx
+	popl    %eax
+	popf
+
+	leal    4(%esp),%esp		# Discard reloff, do not change eflags
+	ret
+
diff --git a/libexec/ld.so/i386/rtld_machine.c b/libexec/ld.so/i386/rtld_machine.c
new file mode 100644
index 00000000000..48023f6f226
--- /dev/null
+++ b/libexec/ld.so/i386/rtld_machine.c
@@ -0,0 +1,350 @@
+#define _DYN_LOADER
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+#include <sys/mman.h>
+
+#include <nlist.h>
+#include <link.h>
+
+#include "syscall.h"
+#include "archdep.h"
+#include "resolve.h"
+
+void
+_dl_bcopy(const void *src, void *dest, int size)
+{
+	const unsigned char *psrc = src;
+	unsigned char *pdest = dest;
+	int i;
+
+	for (i = 0; i < size; i++)
+		pdest[i] = psrc[i];
+}
+
+/*
+ * The following table holds for each relocation type:
+ *	- the width in bits of the memory location the relocation
+ *	  applies to (not currently used)
+ *	- the number of bits the relocation value must be shifted to the
+ *	  right (i.e. discard least significant bits) to fit into
+ *	  the appropriate field in the instruction word.
+ *	- flags indicating whether
+ *		* the relocation involves a symbol
+ *		* the relocation is relative to the current position
+ *		* the relocation is for a GOT entry
+ *		* the relocation is relative to the load address
+ *
+ */
+#define _RF_S		0x80000000		/* Resolve symbol */
+#define _RF_A		0x40000000		/* Use addend */
+#define _RF_P		0x20000000		/* Location relative */
+#define _RF_G		0x10000000		/* GOT offset */
+#define _RF_B		0x08000000		/* Load address relative */
+#define _RF_U		0x04000000		/* Unaligned */
+#define _RF_SZ(s)	(((s) & 0xff) << 8)	/* memory target size */
+#define _RF_RS(s)	((s) & 0xff)		/* right shift */
+static int reloc_target_flags[] = {
+	0,							/* NONE */
+	_RF_S|_RF_A|		_RF_SZ(32) | _RF_RS(0),		/* RELOC_32*/
+	_RF_S|_RF_A|_RF_P|	_RF_SZ(32) | _RF_RS(0),		/* PC32 */
+	_RF_G|			_RF_SZ(32) | _RF_RS(00),	/* GOT32 */
+	      _RF_A|		_RF_SZ(32) | _RF_RS(0),		/* PLT32 */
+	_RF_S|			_RF_SZ(32) | _RF_RS(0),		/* COPY */
+	_RF_S|_RF_A|		_RF_SZ(32) | _RF_RS(0),		/* GLOB_DAT */
+	_RF_S|			_RF_SZ(32) | _RF_RS(0),		/* JUMP_SLOT */
+	      _RF_A|	_RF_B|	_RF_SZ(32) | _RF_RS(0),		/* RELATIVE */
+	0,							/* GOTOFF XXX */
+	0,							/* GOTPC XXX */
+	0,							/* DUMMY 11 */
+	0,							/* DUMMY 12 */
+	0,							/* DUMMY 13 */
+	0,							/* DUMMY 14 */
+	0,							/* DUMMY 15 */
+	0,							/* DUMMY 16 */
+	0,							/* DUMMY 17 */
+	0,							/* DUMMY 18 */
+	0,							/* DUMMY 19 */
+	_RF_S|_RF_A|		_RF_SZ(16) | _RF_RS(0),		/* RELOC_16 */
+	_RF_S|_RF_A|_RF_P|	_RF_SZ(16) | _RF_RS(0),		/* PC_16 */
+	_RF_S|_RF_A|		_RF_SZ(8) | _RF_RS(0),		/* RELOC_8 */
+	_RF_S|_RF_A|_RF_P|	_RF_SZ(8) | _RF_RS(0),		/* RELOC_PC8 */
+};
+
+#define RELOC_RESOLVE_SYMBOL(t)		((reloc_target_flags[t] & _RF_S) != 0)
+#define RELOC_PC_RELATIVE(t)		((reloc_target_flags[t] & _RF_P) != 0)
+#define RELOC_BASE_RELATIVE(t)		((reloc_target_flags[t] & _RF_B) != 0)
+#define RELOC_UNALIGNED(t)		((reloc_target_flags[t] & _RF_U) != 0)
+#define RELOC_USE_ADDEND(t)		((reloc_target_flags[t] & _RF_A) != 0)
+#define RELOC_TARGET_SIZE(t)		((reloc_target_flags[t] >> 8) & 0xff)
+#define RELOC_VALUE_RIGHTSHIFT(t)	(reloc_target_flags[t] & 0xff)
+
+static long reloc_target_bitmask[] = {
+#define _BM(x)	(~(-(1ULL << (x))))
+	0,		/* NONE */
+	_BM(32),	/* RELOC_32*/
+	_BM(32),	/* PC32 */
+	_BM(32),	/* GOT32 */
+	_BM(32),	/* PLT32 */
+	0,		/* COPY */
+	_BM(32),	/* GLOB_DAT */
+	_BM(32),	/* JUMP_SLOT */
+	_BM(32),	/* RELATIVE */
+	0,		/* GOTOFF XXX */
+	0,		/* GOTPC XXX */
+	0,		/* DUMMY 11 */
+	0,		/* DUMMY 12 */
+	0,		/* DUMMY 13 */
+	0,		/* DUMMY 14 */
+	0,		/* DUMMY 15 */
+	0,		/* DUMMY 16 */
+	0,		/* DUMMY 17 */
+	0,		/* DUMMY 18 */
+	0,		/* DUMMY 19 */
+	_BM(16),	/* RELOC_16 */
+	_BM(8),		/* PC_16 */
+	_BM(8),		/* RELOC_8 */
+	_BM(8),		/* RELOC_PC8 */
+#undef _BM
+};
+#define RELOC_VALUE_BITMASK(t)	(reloc_target_bitmask[t])
+
+void _dl_reloc_plt(Elf_Addr *where, Elf_Addr value);
+
+int
+_dl_md_reloc(elf_object_t *object, int rel, int relsz)
+{
+	long	i;
+	long	numrel;
+	long	fails = 0;
+	Elf_Addr loff;
+	Elf_Rel *rels;
+	struct load_list *llist;
+
+	loff = object->load_offs;
+	numrel = object->Dyn.info[relsz] / sizeof(Elf32_Rel);
+	rels = (Elf32_Rel *)(object->Dyn.info[rel]);
+	if (rels == NULL)
+		return(0);
+
+	/*
+	 * unprotect some segments if we need it.
+	 */
+	if ((rel == DT_REL || rel == DT_RELA)) {
+		for (llist = object->load_list; llist != NULL; llist = llist->next) {
+			if (!(llist->prot & PROT_WRITE))
+				_dl_mprotect(llist->start, llist->size,
+				    llist->prot|PROT_WRITE);
+		}
+	}
+
+	for (i = 0; i < numrel; i++, rels++) {
+		Elf_Addr *where, value, ooff, mask;
+		Elf_Word type;
+		const Elf_Sym *sym, *this;
+		const char *symn;
+
+		type = ELF_R_TYPE(rels->r_info);
+
+		if (type == R_TYPE(NONE))
+			continue;
+
+		if (type == R_TYPE(JUMP_SLOT) && rel != DT_JMPREL)
+			continue;
+
+		where = (Elf_Addr *)(rels->r_offset + loff);
+
+		if (RELOC_USE_ADDEND(type))
+			value = *where & RELOC_VALUE_BITMASK(type);
+		else
+			value = 0;
+
+		sym = NULL;
+		symn = NULL;
+		if (RELOC_RESOLVE_SYMBOL(type)) {
+			sym = object->dyn.symtab;
+			sym += ELF_R_SYM(rels->r_info);
+			symn = object->dyn.strtab + sym->st_name;
+
+			if (sym->st_shndx != SHN_UNDEF &&
+			    ELF_ST_BIND(sym->st_info) == STB_LOCAL) {
+				value += loff;
+			} else {
+				this = NULL;
+				ooff = _dl_find_symbol(symn, _dl_objects,
+				    &this, SYM_SEARCH_ALL|SYM_WARNNOTFOUND|
+				    ((type == R_TYPE(JUMP_SLOT))?
+					SYM_PLT:SYM_NOTPLT),
+				    sym->st_size);
+				if (this == NULL) {
+resolve_failed:
+					_dl_printf("%s: %s: can't resolve "
+					    "reference '%s'\n",
+					    _dl_progname, object->load_name,
+					    symn);
+					fails++;
+					continue;
+				}
+				value += (Elf_Addr)(ooff + this->st_value);
+			}
+		}
+
+		if (type == R_TYPE(JUMP_SLOT)) {
+			_dl_reloc_plt((Elf_Word *)where, value);
+			continue;
+		}
+
+		if (type == R_TYPE(COPY)) {
+			void *dstaddr = where;
+			const void *srcaddr;
+			const Elf_Sym *dstsym = sym, *srcsym = NULL;
+			size_t size = dstsym->st_size;
+			Elf_Addr soff;
+
+			soff = _dl_find_symbol(symn, object->next, &srcsym,
+			    SYM_SEARCH_ALL|SYM_WARNNOTFOUND|
+			    ((type == R_TYPE(JUMP_SLOT)) ? SYM_PLT:SYM_NOTPLT),
+			    size);
+			if (srcsym == NULL)
+				goto resolve_failed;
+
+			srcaddr = (void *)(soff + srcsym->st_value);
+			_dl_bcopy(srcaddr, dstaddr, size);
+			continue;
+		}
+
+		if (RELOC_PC_RELATIVE(type))
+			value -= (Elf_Addr)where;
+		if (RELOC_BASE_RELATIVE(type))
+			value += loff;
+
+		mask = RELOC_VALUE_BITMASK(type);
+		value >>= RELOC_VALUE_RIGHTSHIFT(type);
+		value &= mask;
+
+		if (RELOC_UNALIGNED(type)) {
+			/* Handle unaligned relocations. */
+			Elf_Addr tmp = 0;
+			char *ptr = (char *)where;
+			int i, size = RELOC_TARGET_SIZE(type)/8;
+
+			/* Read it in one byte at a time. */
+			for (i=0; i<size; i++)
+				tmp = (tmp << 8) | ptr[i];
+
+			tmp &= ~mask;
+			tmp |= value;
+
+			/* Write it back out. */
+			for (i=0; i<size; i++)
+				ptr[i] = ((tmp >> (8*i)) & 0xff);
+		} else if (RELOC_TARGET_SIZE(type) > 32) {
+			*where &= ~mask;
+			*where |= value;
+		} else {
+			Elf32_Addr *where32 = (Elf32_Addr *)where;
+
+			*where32 &= ~mask;
+			*where32 |= value;
+		}
+	}
+
+	/* reprotect the unprotected segments */
+	if ((rel == DT_REL || rel == DT_RELA)) {
+		for (llist = object->load_list; llist != NULL; llist = llist->next) {
+			if (!(llist->prot & PROT_WRITE))
+				_dl_mprotect(llist->start, llist->size,
+				    llist->prot);
+		}
+	}
+
+	return (fails);
+}
+
+struct jmpslot {
+	u_short opcode;
+	u_short addr[2];
+	u_short reloc_index;
+#define JMPSLOT_RELOC_MASK              0xffff
+};
+#define JUMP    0xe990          /* NOP + JMP opcode */
+
+void
+_dl_reloc_plt(Elf_Addr *where, Elf_Addr value)
+{
+	*where = value;
+}
+
+/*
+ * Resolve a symbol at run-time.
+ */
+Elf_Addr
+_dl_bind(elf_object_t *object, int index)
+{
+	Elf_Rel *rel;
+	Elf_Word *addr;
+	const Elf_Sym *sym, *this;
+	const char *symn;
+	Elf_Addr ooff;
+
+	rel = (Elf_Rel *)(object->Dyn.info[DT_JMPREL]);
+
+	rel += index/sizeof(Elf_Rel);
+
+	sym = object->dyn.symtab;
+	sym += ELF_R_SYM(rel->r_info);
+	symn = object->dyn.strtab + sym->st_name;
+
+	addr = (Elf_Word *)(object->load_offs + rel->r_offset);
+	ooff = _dl_find_symbol(symn, _dl_objects, &this,
+	    SYM_SEARCH_ALL|SYM_WARNNOTFOUND|SYM_PLT, 0);
+	if (this == NULL) {
+		_dl_printf("lazy binding failed!\n");
+		*((int *)0) = 0;        /* XXX */
+	}
+
+	_dl_reloc_plt(addr, ooff + this->st_value);
+
+	return((Elf_Addr)ooff + this->st_value);
+}
+
+void
+_dl_md_reloc_got(elf_object_t *object, int lazy)
+{
+	extern void _dl_bind_start(void);       /* XXX */
+	Elf_Addr *pltgot = (Elf_Addr *)object->Dyn.info[DT_PLTGOT];
+	int i, num;
+	Elf_Rel *rel;
+	struct load_list *llist;
+
+	pltgot[1] = (Elf_Addr)object;
+	pltgot[2] = (Elf_Addr)&_dl_bind_start;
+
+	if (object->Dyn.info[DT_PLTREL] != DT_REL)
+		return;
+
+	if (!lazy) {
+		_dl_md_reloc(object, DT_JMPREL, DT_PLTRELSZ);
+		return;
+	}
+
+	rel = (Elf_Rel *)(object->Dyn.info[DT_JMPREL]);
+	num = (object->Dyn.info[DT_PLTRELSZ]);
+	for (llist = object->load_list; llist != NULL; llist = llist->next) {
+		if (!(llist->prot & PROT_WRITE))
+			_dl_mprotect(llist->start, llist->size,
+			    llist->prot|PROT_WRITE);
+	}
+	for (i = 0; i < num/sizeof(Elf_Rel); i++, rel++) {
+		Elf_Addr *where;
+		where = (Elf_Addr *)(rel->r_offset + object->load_offs);
+		*where += object->load_offs;
+	}
+	for (llist = object->load_list; llist != NULL; llist = llist->next) {
+		if (!(llist->prot & PROT_WRITE))
+			_dl_mprotect(llist->start, llist->size,
+			    llist->prot);
+	}
+}
+
+
diff --git a/libexec/ld.so/i386/syscall.h b/libexec/ld.so/i386/syscall.h
new file mode 100644
index 00000000000..c9719118dd1
--- /dev/null
+++ b/libexec/ld.so/i386/syscall.h
@@ -0,0 +1,67 @@
+/*	$OpenBSD: syscall.h,v 1.1 2002/08/23 23:02:48 drahn Exp $ */
+
+/*
+ * Copyright (c) 2001 Niklas Hallqvist
+ *
+ * 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. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed under OpenBSD by
+ *	Niklas Hallqvist.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ *
+ */
+
+#ifndef __DL_SYSCALL_H__
+#define __DL_SYSCALL_H__
+
+#include <sys/syscall.h>
+#include <sys/stat.h>
+
+#ifndef _dl_MAX_ERRNO
+#define _dl_MAX_ERRNO 4096
+#endif
+#define _dl_check_error(__res) \
+    ((int) __res < 0 && (int) __res >= -_dl_MAX_ERRNO)
+
+int	_dl_close(int);
+int	_dl_exit(int);
+int	_dl_issetugid(void);
+long	_dl__syscall(quad_t, ...);
+int	_dl_mprotect(const void *, int, int);
+int	_dl_munmap(const void*, unsigned int);
+int	_dl_open(const char*, unsigned int);
+int	_dl_read(int, const char*, int);
+int	_dl_stat(const char *, struct stat *);
+int	_dl_write(int, const char*, int);
+int	_dl_fstat(int, struct stat *);
+int	_dl_fcntl(int, int, ...);
+int	_dl_getdirentries(int, char*, int, long *);
+
+static inline off_t
+_dl_lseek(int fildes, off_t offset, int whence)
+{
+        return _dl__syscall((quad_t)SYS_lseek, fildes, 0, offset, whence);
+}
+
+#endif /*__DL_SYSCALL_H__*/