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-rw-r--r--libexec/ld.so/amd64/Makefile.inc4
-rw-r--r--libexec/ld.so/amd64/archdep.h87
-rw-r--r--libexec/ld.so/amd64/ldasm.S151
-rw-r--r--libexec/ld.so/amd64/rtld_machine.c467
-rw-r--r--libexec/ld.so/amd64/syscall.h63
-rw-r--r--libexec/ld.so/x86_64/Makefile.inc4
-rw-r--r--libexec/ld.so/x86_64/archdep.h87
-rw-r--r--libexec/ld.so/x86_64/ldasm.S151
-rw-r--r--libexec/ld.so/x86_64/rtld_machine.c467
-rw-r--r--libexec/ld.so/x86_64/syscall.h63
10 files changed, 1544 insertions, 0 deletions
diff --git a/libexec/ld.so/amd64/Makefile.inc b/libexec/ld.so/amd64/Makefile.inc
new file mode 100644
index 00000000000..8f7d51179b4
--- /dev/null
+++ b/libexec/ld.so/amd64/Makefile.inc
@@ -0,0 +1,4 @@
+# $OpenBSD: Makefile.inc,v 1.1 2004/02/10 14:18:14 drahn Exp $
+
+CFLAGS += -fPIC -fno-stack-protector
+AFLAGS += -fpic
diff --git a/libexec/ld.so/amd64/archdep.h b/libexec/ld.so/amd64/archdep.h
new file mode 100644
index 00000000000..d8e729b9b68
--- /dev/null
+++ b/libexec/ld.so/amd64/archdep.h
@@ -0,0 +1,87 @@
+/* $OpenBSD: archdep.h,v 1.1 2004/02/10 14:18:14 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.
+ *
+ * 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 _X86_64_ARCHDEP_H_
+#define _X86_64_ARCHDEP_H_
+
+#define DL_MALLOC_ALIGN 8 /* Arch constraint or otherwise */
+
+#define MACHID EM_X86_64 /* 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"
+
+#define RTLD_TEXT_PLT
+
+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 *
+_dl_mquery(void *addr, unsigned int len, unsigned int prot,
+ unsigned int flags, int fd, off_t offset)
+{
+ return((void *)_dl__syscall((quad_t)SYS_mquery, addr, len, prot,
+ flags, fd, 0, offset));
+}
+
+
+static inline void
+RELOC_REL(Elf64_Rel *r, const Elf64_Sym *s, Elf64_Addr *p, unsigned long v)
+{
+ /* AMD64 is a rela architecture */
+}
+
+static inline void
+RELOC_RELA(Elf64_Rela *r, const Elf64_Sym *s, Elf64_Addr *p, unsigned long v)
+{
+ if (ELF64_R_TYPE(r->r_info) == R_X86_64_RELATIVE) {
+ *p = v + r->r_addend;
+ } else if (ELF64_R_TYPE(r->r_info) == R_X86_64_GLOB_DAT) {
+ *p = v + s->st_value + r->r_addend;
+ } else {
+ _dl_printf("unknown bootstrap relocation\n");
+ _dl_exit(6);
+ }
+}
+
+#define RELOC_GOT(obj, offs)
+
+#define GOT_PERMS PROT_READ
+
+#endif /* _X86_64_ARCHDEP_H_ */
diff --git a/libexec/ld.so/amd64/ldasm.S b/libexec/ld.so/amd64/ldasm.S
new file mode 100644
index 00000000000..11b30c866b4
--- /dev/null
+++ b/libexec/ld.so/amd64/ldasm.S
@@ -0,0 +1,151 @@
+/* $OpenBSD: ldasm.S,v 1.1 2004/02/10 14:18:14 drahn Exp $ */
+
+/*
+ * Copyright (c) 2002,2004 Dale Rahn
+ * 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. 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.
+ *
+ * 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.
+ *
+ */
+
+
+#define DL_DATA_SIZE (16*8) /* 16 * sizeof(ELF_Addr) */
+#define DL_LOFF_OFFSET (7*8) /* index 7 */
+#include <sys/syscall.h>
+#include <machine/asm.h>
+
+ .text
+ .align 4
+ .globl _dl_start
+ .type _dl_start,@function
+_dl_start:
+ movq %rsp, %r12 # save stack pointer for _rtld
+ pushq %rbx # save ps_strings
+ subq $DL_DATA_SIZE, %rsp # allocate dl_data
+
+ leaq _DYNAMIC(%rip),%rdx # &_DYNAMIC
+ movq %rsp, %rsi # dl_data for dl_boot_bind
+ movq %r12, %rdi # load saved SP for dl_boot_bind
+ call _dl_boot_bind@PLT # _dl_boot_bind(sp,dl_data,dynamicp)
+
+ movq %rsi, %rcx # dl_data
+ movq DL_LOFF_OFFSET(%rsi), %rdx # loff from dl_data
+
+ movq (%r12), %rdi
+ leaq 16(%r12,%rdi,8), %rsi # envp
+ movq %r12, %rdi
+ addq $8,%rdi # argv
+ call _dl_boot@PLT # _dl_boot(argv,envp,loff,dl_data)
+
+ addq $DL_DATA_SIZE,%rsp # return dl_data
+
+ popq %rbx # %rbx = ps_strings - XXXDSR
+ popq %rdx # %rdx = cleanup - XXXDSR
+ popq %rcx # %rcx = obj_main - XXXDSR
+ jmp *%rax
+
+ .section ".text"
+
+#define DL_SYSCALL(n) DL_SYSCALL2(n,n)
+#define DL_SYSCALL2(n,c) \
+ .global __CONCAT(_dl_,n) ;\
+ .type __CONCAT(_dl_,n), @function ;\
+ .align 4 ;\
+__CONCAT(_dl_,n): ;\
+ movl $(__CONCAT(SYS_,c)), %eax ;\
+ movq %rcx, %r10 ;\
+ syscall ;\
+ jb 1f ;\
+ ret
+
+DL_SYSCALL(open)
+DL_SYSCALL(fcntl)
+DL_SYSCALL(fstat)
+DL_SYSCALL(stat)
+DL_SYSCALL(read)
+DL_SYSCALL(write)
+DL_SYSCALL(close)
+DL_SYSCALL(issetugid)
+DL_SYSCALL(getdirentries)
+DL_SYSCALL(mprotect)
+DL_SYSCALL(munmap)
+DL_SYSCALL(exit)
+DL_SYSCALL2(_syscall,__syscall)
+DL_SYSCALL2(sysctl,__sysctl)
+
+1:
+ /* error: result = -errno; - handled here. */
+ neg %rax
+ ret
+
+
+ /* _dl_sigprocmask: does not handle NULL new set */
+
+ .align 4
+ .global _dl_sigprocmask
+ .type _dl_sigprocmask,@function
+_dl_sigprocmask:
+ movq (%rsi),%rsi # fetch indirect ...
+ movl $SYS_sigprocmask, %eax
+ movq %rcx, %r10
+ syscall
+ jc 1b /* error: result = -errno */
+ testq %rdx,%rdx # test if old mask requested
+ jz 2f
+ movq %rax,(%rdx) # store old mask
+ xorq %rax,%rax
+2: ret
+
+ .align 4
+ .global _dl_bind_start
+ .type _dl_bind_start,@function
+_dl_bind_start:
+ pushfq # save registers
+ pushq %rax
+ pushq %rcx
+ pushq %rdx
+ pushq %rsi
+ pushq %rdi
+ pushq %r8
+ pushq %r9
+ pushq %r10
+ pushq %r11
+
+ movq 80(%rsp), %rdi # Copy of reloff
+ movq 88(%rsp), %rsi # Copy of obj
+ call _dl_bind@PLT # Call the binder
+ movq %rax,88(%rsp) # Store function to be called in obj
+
+ popq %r11 # restore registers
+ popq %r10
+ popq %r9
+ popq %r8
+ popq %rdi
+ popq %rsi
+ popq %rdx
+ popq %rcx
+ popq %rax
+ popfq
+
+ leaq 8(%rsp),%rsp # Discard reloff, do not change eflags
+ ret
+
diff --git a/libexec/ld.so/amd64/rtld_machine.c b/libexec/ld.so/amd64/rtld_machine.c
new file mode 100644
index 00000000000..0c8e18643bb
--- /dev/null
+++ b/libexec/ld.so/amd64/rtld_machine.c
@@ -0,0 +1,467 @@
+/* $OpenBSD: rtld_machine.c,v 1.1 2004/02/10 14:18:14 drahn Exp $ */
+
+/*
+ * Copyright (c) 2002,2004 Dale Rahn
+ * Copyright (c) 2001 Niklas Hallqvist
+ * Copyright (c) 2001 Artur Grabowski
+ *
+ * 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.
+ *
+ * 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.
+ */
+/*-
+ * Copyright (c) 2000 Eduardo Horvath.
+ * Copyright (c) 1999 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Paul Kranenburg.
+ *
+ * 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 by the NetBSD
+ * Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 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 FOUNDATION OR 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.
+ */
+
+#define _DYN_LOADER
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+#include <sys/mman.h>
+
+#include <nlist.h>
+#include <link.h>
+#include <signal.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_E 0x02000000 /* ERROR */
+#define _RF_SZ(s) (((s) & 0xff) << 8) /* memory target size */
+#define _RF_RS(s) ((s) & 0xff) /* right shift */
+static int reloc_target_flags[] = {
+ 0, /* 0 NONE */
+ _RF_S|_RF_A| _RF_SZ(64) | _RF_RS(0), /* 1 _64*/
+ _RF_S|_RF_A|_RF_P| _RF_SZ(32) | _RF_RS(0), /* 2 PC32 */
+ _RF_G|_RF_A| _RF_SZ(32) | _RF_RS(0), /* 3 GOT32 */
+ _RF_E|_RF_A| _RF_SZ(32) | _RF_RS(0), /* 4 PLT32 */
+ _RF_S| _RF_SZ(32) | _RF_RS(0), /* 5 COPY */
+ _RF_S| _RF_SZ(64) | _RF_RS(0), /* 6 GLOB_DAT*/
+ _RF_S| _RF_SZ(64) | _RF_RS(0), /* 7 JUMP_SLOT*/
+ _RF_A| _RF_B| _RF_SZ(64) | _RF_RS(0), /* 8 RELATIVE*/
+ _RF_E, /* 9 GOTPCREL*/
+ _RF_S|_RF_A| _RF_SZ(32) | _RF_RS(0), /* 10 32 */
+ _RF_S|_RF_A| _RF_SZ(32) | _RF_RS(0), /* 11 32S */
+ _RF_S|_RF_A| _RF_SZ(16) | _RF_RS(0), /* 12 16 */
+ _RF_S|_RF_A|_RF_P| _RF_SZ(16) | _RF_RS(0), /* 13 PC16 */
+ _RF_S|_RF_A| _RF_SZ(8) | _RF_RS(0), /* 14 8 */
+ _RF_S|_RF_A|_RF_P| _RF_SZ(8) | _RF_RS(0), /* 15 PC8 */
+ _RF_E, /* 16 DPTMOD64*/
+ _RF_E, /* 17 DTPOFF64*/
+ _RF_E, /* 18 TPOFF64 */
+ _RF_E, /* 19 TLSGD */
+ _RF_E, /* 20 TLSLD */
+ _RF_E, /* 21 DTPOFF32*/
+ _RF_E, /* 22 GOTTPOFF*/
+ _RF_E /* 23 TPOFF32*/
+};
+
+#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)
+#define RELOC_ERROR(t) (reloc_target_flags[t] & _RF_E)
+
+static long reloc_target_bitmask[] = {
+#define _BM(x) (x == 64? ~0 : ~(-(1UL << (x))))
+ 0, /* 0 NONE */
+ _BM(64), /* 1 _64*/
+ _BM(32), /* 2 PC32 */
+ _BM(32), /* 3 GOT32 */
+ _BM(32), /* 4 PLT32 */
+ _BM(0), /* 5 COPY */
+ _BM(64), /* 6 GLOB_DAT*/
+ _BM(64), /* 7 JUMP_SLOT*/
+ _BM(64), /* 8 RELATIVE*/
+ _BM(32), /* 9 GOTPCREL*/
+ _BM(32), /* 10 32 */
+ _BM(32), /* 11 32S */
+ _BM(16), /* 12 16 */
+ _BM(16), /* 13 PC16 */
+ _BM(8), /* 14 8 */
+ _BM(8), /* 15 PC8 */
+ 0, /* 16 DPTMOD64*/
+ 0, /* 17 DTPOFF64*/
+ 0, /* 18 TPOFF64 */
+ 0, /* 19 TLSGD */
+ 0, /* 20 TLSLD */
+ 0, /* 21 DTPOFF32*/
+ 0, /* 22 GOTTPOFF*/
+ 0 /* 23 TPOFF32*/
+#undef _BM
+};
+#define RELOC_VALUE_BITMASK(t) (reloc_target_bitmask[t])
+
+void _dl_reloc_plt(Elf_Addr *where, Elf_Addr value);
+
+#define R_TYPE(x) R_X86_64_ ## x
+
+int
+_dl_md_reloc(elf_object_t *object, int rel, int relsz)
+{
+ long i;
+ long numrel;
+ long fails = 0;
+ Elf_Addr loff;
+ Elf_RelA *rels;
+ struct load_list *llist;
+
+ loff = object->load_offs;
+ numrel = object->Dyn.info[relsz] / sizeof(Elf_RelA);
+ rels = (Elf_RelA *)(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 (RELOC_ERROR(type)) {
+ _dl_printf("relocation error %d idx %d\n", type, i);
+ _dl_exit(20);
+ }
+
+ 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))
+#if 1
+ value = rels->r_addend;
+#else
+ value = *where & RELOC_VALUE_BITMASK(type);
+#endif
+ 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_bysym(object,
+ ELF_R_SYM(rels->r_info), _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(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, object);
+ 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);
+}
+
+#if 0
+struct jmpslot {
+ u_short opcode;
+ u_short addr[2];
+ u_short reloc_index;
+#define JMPSLOT_RELOC_MASK 0xffff
+};
+#define JUMP 0xe990 /* NOP + JMP opcode */
+#endif
+
+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;
+ sigset_t omask, nmask;
+
+ 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);
+ this = NULL;
+ ooff = _dl_find_symbol(symn, _dl_objects, &this,
+ SYM_SEARCH_ALL|SYM_WARNNOTFOUND|SYM_PLT, sym->st_size, object);
+ if (this == NULL) {
+ _dl_printf("lazy binding failed!\n");
+ *((int *)0) = 0; /* XXX */
+ }
+
+ /* if GOT is protected, allow the write */
+ if (object->got_size != 0) {
+ sigfillset(&nmask);
+ _dl_sigprocmask(SIG_BLOCK, &nmask, &omask);
+ _dl_mprotect((void*)object->got_start, object->got_size,
+ PROT_READ|PROT_WRITE);
+ }
+
+ _dl_reloc_plt((Elf_Addr *)addr, ooff + this->st_value);
+
+ /* put the GOT back to RO */
+ if (object->got_size != 0) {
+ _dl_mprotect((void*)object->got_start, object->got_size,
+ PROT_READ);
+ _dl_sigprocmask(SIG_SETMASK, &omask, NULL);
+ }
+
+ 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_RelA *rel;
+ Elf_Addr ooff;
+ const Elf_Sym *this;
+
+ if (pltgot == NULL)
+ return; /* it is possible to have no PLT/GOT relocations */
+
+ pltgot[1] = (Elf_Addr)object;
+ pltgot[2] = (Elf_Addr)&_dl_bind_start;
+
+ if (object->Dyn.info[DT_PLTREL] != DT_RELA)
+ return;
+
+ object->got_addr = NULL;
+ object->got_size = 0;
+ this = NULL;
+ ooff = _dl_find_symbol("__got_start", object, &this,
+ SYM_SEARCH_SELF|SYM_NOWARNNOTFOUND|SYM_PLT, 0, object);
+ if (this != NULL)
+ object->got_addr = ooff + this->st_value;
+
+ this = NULL;
+ ooff = _dl_find_symbol("__got_end", object, &this,
+ SYM_SEARCH_SELF|SYM_NOWARNNOTFOUND|SYM_PLT, 0, object);
+ if (this != NULL)
+ object->got_size = ooff + this->st_value - object->got_addr;
+
+ if (object->got_addr == NULL)
+ object->got_start = NULL;
+ else {
+ object->got_start = ELF_TRUNC(object->got_addr, _dl_pagesz);
+ object->got_size += object->got_addr - object->got_start;
+ object->got_size = ELF_ROUND(object->got_size, _dl_pagesz);
+ }
+
+ if (!lazy) {
+ _dl_md_reloc(object, DT_JMPREL, DT_PLTRELSZ);
+ } else {
+ rel = (Elf_RelA *)(object->Dyn.info[DT_JMPREL]);
+ num = (object->Dyn.info[DT_PLTRELSZ]);
+ for (i = 0; i < num/sizeof(Elf_RelA); i++, rel++) {
+ Elf_Addr *where;
+ where = (Elf_Addr *)(rel->r_offset + object->load_offs);
+ *where = object->load_offs + rel->r_addend;
+ }
+
+ }
+ /* PLT is already RO on i386, no point in mprotecting it, just GOT */
+ if (object->got_size != 0)
+ _dl_mprotect((void*)object->got_start, object->got_size,
+ PROT_READ);
+}
diff --git a/libexec/ld.so/amd64/syscall.h b/libexec/ld.so/amd64/syscall.h
new file mode 100644
index 00000000000..91436a14f2f
--- /dev/null
+++ b/libexec/ld.so/amd64/syscall.h
@@ -0,0 +1,63 @@
+/* $OpenBSD: syscall.h,v 1.1 2004/02/10 14:18:14 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.
+ *
+ * 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>
+#include <sys/signal.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_fstat(int, struct stat *);
+int _dl_fcntl(int, int, ...);
+int _dl_getdirentries(int, char*, int, long *);
+int _dl_sigprocmask(int, const sigset_t *, sigset_t *);
+int _dl_sysctl(int *, u_int, void *, size_t *, void *, size_t);
+
+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__*/
diff --git a/libexec/ld.so/x86_64/Makefile.inc b/libexec/ld.so/x86_64/Makefile.inc
new file mode 100644
index 00000000000..8f7d51179b4
--- /dev/null
+++ b/libexec/ld.so/x86_64/Makefile.inc
@@ -0,0 +1,4 @@
+# $OpenBSD: Makefile.inc,v 1.1 2004/02/10 14:18:14 drahn Exp $
+
+CFLAGS += -fPIC -fno-stack-protector
+AFLAGS += -fpic
diff --git a/libexec/ld.so/x86_64/archdep.h b/libexec/ld.so/x86_64/archdep.h
new file mode 100644
index 00000000000..d8e729b9b68
--- /dev/null
+++ b/libexec/ld.so/x86_64/archdep.h
@@ -0,0 +1,87 @@
+/* $OpenBSD: archdep.h,v 1.1 2004/02/10 14:18:14 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.
+ *
+ * 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 _X86_64_ARCHDEP_H_
+#define _X86_64_ARCHDEP_H_
+
+#define DL_MALLOC_ALIGN 8 /* Arch constraint or otherwise */
+
+#define MACHID EM_X86_64 /* 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"
+
+#define RTLD_TEXT_PLT
+
+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 *
+_dl_mquery(void *addr, unsigned int len, unsigned int prot,
+ unsigned int flags, int fd, off_t offset)
+{
+ return((void *)_dl__syscall((quad_t)SYS_mquery, addr, len, prot,
+ flags, fd, 0, offset));
+}
+
+
+static inline void
+RELOC_REL(Elf64_Rel *r, const Elf64_Sym *s, Elf64_Addr *p, unsigned long v)
+{
+ /* AMD64 is a rela architecture */
+}
+
+static inline void
+RELOC_RELA(Elf64_Rela *r, const Elf64_Sym *s, Elf64_Addr *p, unsigned long v)
+{
+ if (ELF64_R_TYPE(r->r_info) == R_X86_64_RELATIVE) {
+ *p = v + r->r_addend;
+ } else if (ELF64_R_TYPE(r->r_info) == R_X86_64_GLOB_DAT) {
+ *p = v + s->st_value + r->r_addend;
+ } else {
+ _dl_printf("unknown bootstrap relocation\n");
+ _dl_exit(6);
+ }
+}
+
+#define RELOC_GOT(obj, offs)
+
+#define GOT_PERMS PROT_READ
+
+#endif /* _X86_64_ARCHDEP_H_ */
diff --git a/libexec/ld.so/x86_64/ldasm.S b/libexec/ld.so/x86_64/ldasm.S
new file mode 100644
index 00000000000..11b30c866b4
--- /dev/null
+++ b/libexec/ld.so/x86_64/ldasm.S
@@ -0,0 +1,151 @@
+/* $OpenBSD: ldasm.S,v 1.1 2004/02/10 14:18:14 drahn Exp $ */
+
+/*
+ * Copyright (c) 2002,2004 Dale Rahn
+ * 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. 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.
+ *
+ * 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.
+ *
+ */
+
+
+#define DL_DATA_SIZE (16*8) /* 16 * sizeof(ELF_Addr) */
+#define DL_LOFF_OFFSET (7*8) /* index 7 */
+#include <sys/syscall.h>
+#include <machine/asm.h>
+
+ .text
+ .align 4
+ .globl _dl_start
+ .type _dl_start,@function
+_dl_start:
+ movq %rsp, %r12 # save stack pointer for _rtld
+ pushq %rbx # save ps_strings
+ subq $DL_DATA_SIZE, %rsp # allocate dl_data
+
+ leaq _DYNAMIC(%rip),%rdx # &_DYNAMIC
+ movq %rsp, %rsi # dl_data for dl_boot_bind
+ movq %r12, %rdi # load saved SP for dl_boot_bind
+ call _dl_boot_bind@PLT # _dl_boot_bind(sp,dl_data,dynamicp)
+
+ movq %rsi, %rcx # dl_data
+ movq DL_LOFF_OFFSET(%rsi), %rdx # loff from dl_data
+
+ movq (%r12), %rdi
+ leaq 16(%r12,%rdi,8), %rsi # envp
+ movq %r12, %rdi
+ addq $8,%rdi # argv
+ call _dl_boot@PLT # _dl_boot(argv,envp,loff,dl_data)
+
+ addq $DL_DATA_SIZE,%rsp # return dl_data
+
+ popq %rbx # %rbx = ps_strings - XXXDSR
+ popq %rdx # %rdx = cleanup - XXXDSR
+ popq %rcx # %rcx = obj_main - XXXDSR
+ jmp *%rax
+
+ .section ".text"
+
+#define DL_SYSCALL(n) DL_SYSCALL2(n,n)
+#define DL_SYSCALL2(n,c) \
+ .global __CONCAT(_dl_,n) ;\
+ .type __CONCAT(_dl_,n), @function ;\
+ .align 4 ;\
+__CONCAT(_dl_,n): ;\
+ movl $(__CONCAT(SYS_,c)), %eax ;\
+ movq %rcx, %r10 ;\
+ syscall ;\
+ jb 1f ;\
+ ret
+
+DL_SYSCALL(open)
+DL_SYSCALL(fcntl)
+DL_SYSCALL(fstat)
+DL_SYSCALL(stat)
+DL_SYSCALL(read)
+DL_SYSCALL(write)
+DL_SYSCALL(close)
+DL_SYSCALL(issetugid)
+DL_SYSCALL(getdirentries)
+DL_SYSCALL(mprotect)
+DL_SYSCALL(munmap)
+DL_SYSCALL(exit)
+DL_SYSCALL2(_syscall,__syscall)
+DL_SYSCALL2(sysctl,__sysctl)
+
+1:
+ /* error: result = -errno; - handled here. */
+ neg %rax
+ ret
+
+
+ /* _dl_sigprocmask: does not handle NULL new set */
+
+ .align 4
+ .global _dl_sigprocmask
+ .type _dl_sigprocmask,@function
+_dl_sigprocmask:
+ movq (%rsi),%rsi # fetch indirect ...
+ movl $SYS_sigprocmask, %eax
+ movq %rcx, %r10
+ syscall
+ jc 1b /* error: result = -errno */
+ testq %rdx,%rdx # test if old mask requested
+ jz 2f
+ movq %rax,(%rdx) # store old mask
+ xorq %rax,%rax
+2: ret
+
+ .align 4
+ .global _dl_bind_start
+ .type _dl_bind_start,@function
+_dl_bind_start:
+ pushfq # save registers
+ pushq %rax
+ pushq %rcx
+ pushq %rdx
+ pushq %rsi
+ pushq %rdi
+ pushq %r8
+ pushq %r9
+ pushq %r10
+ pushq %r11
+
+ movq 80(%rsp), %rdi # Copy of reloff
+ movq 88(%rsp), %rsi # Copy of obj
+ call _dl_bind@PLT # Call the binder
+ movq %rax,88(%rsp) # Store function to be called in obj
+
+ popq %r11 # restore registers
+ popq %r10
+ popq %r9
+ popq %r8
+ popq %rdi
+ popq %rsi
+ popq %rdx
+ popq %rcx
+ popq %rax
+ popfq
+
+ leaq 8(%rsp),%rsp # Discard reloff, do not change eflags
+ ret
+
diff --git a/libexec/ld.so/x86_64/rtld_machine.c b/libexec/ld.so/x86_64/rtld_machine.c
new file mode 100644
index 00000000000..0c8e18643bb
--- /dev/null
+++ b/libexec/ld.so/x86_64/rtld_machine.c
@@ -0,0 +1,467 @@
+/* $OpenBSD: rtld_machine.c,v 1.1 2004/02/10 14:18:14 drahn Exp $ */
+
+/*
+ * Copyright (c) 2002,2004 Dale Rahn
+ * Copyright (c) 2001 Niklas Hallqvist
+ * Copyright (c) 2001 Artur Grabowski
+ *
+ * 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.
+ *
+ * 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.
+ */
+/*-
+ * Copyright (c) 2000 Eduardo Horvath.
+ * Copyright (c) 1999 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Paul Kranenburg.
+ *
+ * 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 by the NetBSD
+ * Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 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 FOUNDATION OR 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.
+ */
+
+#define _DYN_LOADER
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+#include <sys/mman.h>
+
+#include <nlist.h>
+#include <link.h>
+#include <signal.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_E 0x02000000 /* ERROR */
+#define _RF_SZ(s) (((s) & 0xff) << 8) /* memory target size */
+#define _RF_RS(s) ((s) & 0xff) /* right shift */
+static int reloc_target_flags[] = {
+ 0, /* 0 NONE */
+ _RF_S|_RF_A| _RF_SZ(64) | _RF_RS(0), /* 1 _64*/
+ _RF_S|_RF_A|_RF_P| _RF_SZ(32) | _RF_RS(0), /* 2 PC32 */
+ _RF_G|_RF_A| _RF_SZ(32) | _RF_RS(0), /* 3 GOT32 */
+ _RF_E|_RF_A| _RF_SZ(32) | _RF_RS(0), /* 4 PLT32 */
+ _RF_S| _RF_SZ(32) | _RF_RS(0), /* 5 COPY */
+ _RF_S| _RF_SZ(64) | _RF_RS(0), /* 6 GLOB_DAT*/
+ _RF_S| _RF_SZ(64) | _RF_RS(0), /* 7 JUMP_SLOT*/
+ _RF_A| _RF_B| _RF_SZ(64) | _RF_RS(0), /* 8 RELATIVE*/
+ _RF_E, /* 9 GOTPCREL*/
+ _RF_S|_RF_A| _RF_SZ(32) | _RF_RS(0), /* 10 32 */
+ _RF_S|_RF_A| _RF_SZ(32) | _RF_RS(0), /* 11 32S */
+ _RF_S|_RF_A| _RF_SZ(16) | _RF_RS(0), /* 12 16 */
+ _RF_S|_RF_A|_RF_P| _RF_SZ(16) | _RF_RS(0), /* 13 PC16 */
+ _RF_S|_RF_A| _RF_SZ(8) | _RF_RS(0), /* 14 8 */
+ _RF_S|_RF_A|_RF_P| _RF_SZ(8) | _RF_RS(0), /* 15 PC8 */
+ _RF_E, /* 16 DPTMOD64*/
+ _RF_E, /* 17 DTPOFF64*/
+ _RF_E, /* 18 TPOFF64 */
+ _RF_E, /* 19 TLSGD */
+ _RF_E, /* 20 TLSLD */
+ _RF_E, /* 21 DTPOFF32*/
+ _RF_E, /* 22 GOTTPOFF*/
+ _RF_E /* 23 TPOFF32*/
+};
+
+#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)
+#define RELOC_ERROR(t) (reloc_target_flags[t] & _RF_E)
+
+static long reloc_target_bitmask[] = {
+#define _BM(x) (x == 64? ~0 : ~(-(1UL << (x))))
+ 0, /* 0 NONE */
+ _BM(64), /* 1 _64*/
+ _BM(32), /* 2 PC32 */
+ _BM(32), /* 3 GOT32 */
+ _BM(32), /* 4 PLT32 */
+ _BM(0), /* 5 COPY */
+ _BM(64), /* 6 GLOB_DAT*/
+ _BM(64), /* 7 JUMP_SLOT*/
+ _BM(64), /* 8 RELATIVE*/
+ _BM(32), /* 9 GOTPCREL*/
+ _BM(32), /* 10 32 */
+ _BM(32), /* 11 32S */
+ _BM(16), /* 12 16 */
+ _BM(16), /* 13 PC16 */
+ _BM(8), /* 14 8 */
+ _BM(8), /* 15 PC8 */
+ 0, /* 16 DPTMOD64*/
+ 0, /* 17 DTPOFF64*/
+ 0, /* 18 TPOFF64 */
+ 0, /* 19 TLSGD */
+ 0, /* 20 TLSLD */
+ 0, /* 21 DTPOFF32*/
+ 0, /* 22 GOTTPOFF*/
+ 0 /* 23 TPOFF32*/
+#undef _BM
+};
+#define RELOC_VALUE_BITMASK(t) (reloc_target_bitmask[t])
+
+void _dl_reloc_plt(Elf_Addr *where, Elf_Addr value);
+
+#define R_TYPE(x) R_X86_64_ ## x
+
+int
+_dl_md_reloc(elf_object_t *object, int rel, int relsz)
+{
+ long i;
+ long numrel;
+ long fails = 0;
+ Elf_Addr loff;
+ Elf_RelA *rels;
+ struct load_list *llist;
+
+ loff = object->load_offs;
+ numrel = object->Dyn.info[relsz] / sizeof(Elf_RelA);
+ rels = (Elf_RelA *)(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 (RELOC_ERROR(type)) {
+ _dl_printf("relocation error %d idx %d\n", type, i);
+ _dl_exit(20);
+ }
+
+ 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))
+#if 1
+ value = rels->r_addend;
+#else
+ value = *where & RELOC_VALUE_BITMASK(type);
+#endif
+ 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_bysym(object,
+ ELF_R_SYM(rels->r_info), _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(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, object);
+ 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);
+}
+
+#if 0
+struct jmpslot {
+ u_short opcode;
+ u_short addr[2];
+ u_short reloc_index;
+#define JMPSLOT_RELOC_MASK 0xffff
+};
+#define JUMP 0xe990 /* NOP + JMP opcode */
+#endif
+
+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;
+ sigset_t omask, nmask;
+
+ 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);
+ this = NULL;
+ ooff = _dl_find_symbol(symn, _dl_objects, &this,
+ SYM_SEARCH_ALL|SYM_WARNNOTFOUND|SYM_PLT, sym->st_size, object);
+ if (this == NULL) {
+ _dl_printf("lazy binding failed!\n");
+ *((int *)0) = 0; /* XXX */
+ }
+
+ /* if GOT is protected, allow the write */
+ if (object->got_size != 0) {
+ sigfillset(&nmask);
+ _dl_sigprocmask(SIG_BLOCK, &nmask, &omask);
+ _dl_mprotect((void*)object->got_start, object->got_size,
+ PROT_READ|PROT_WRITE);
+ }
+
+ _dl_reloc_plt((Elf_Addr *)addr, ooff + this->st_value);
+
+ /* put the GOT back to RO */
+ if (object->got_size != 0) {
+ _dl_mprotect((void*)object->got_start, object->got_size,
+ PROT_READ);
+ _dl_sigprocmask(SIG_SETMASK, &omask, NULL);
+ }
+
+ 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_RelA *rel;
+ Elf_Addr ooff;
+ const Elf_Sym *this;
+
+ if (pltgot == NULL)
+ return; /* it is possible to have no PLT/GOT relocations */
+
+ pltgot[1] = (Elf_Addr)object;
+ pltgot[2] = (Elf_Addr)&_dl_bind_start;
+
+ if (object->Dyn.info[DT_PLTREL] != DT_RELA)
+ return;
+
+ object->got_addr = NULL;
+ object->got_size = 0;
+ this = NULL;
+ ooff = _dl_find_symbol("__got_start", object, &this,
+ SYM_SEARCH_SELF|SYM_NOWARNNOTFOUND|SYM_PLT, 0, object);
+ if (this != NULL)
+ object->got_addr = ooff + this->st_value;
+
+ this = NULL;
+ ooff = _dl_find_symbol("__got_end", object, &this,
+ SYM_SEARCH_SELF|SYM_NOWARNNOTFOUND|SYM_PLT, 0, object);
+ if (this != NULL)
+ object->got_size = ooff + this->st_value - object->got_addr;
+
+ if (object->got_addr == NULL)
+ object->got_start = NULL;
+ else {
+ object->got_start = ELF_TRUNC(object->got_addr, _dl_pagesz);
+ object->got_size += object->got_addr - object->got_start;
+ object->got_size = ELF_ROUND(object->got_size, _dl_pagesz);
+ }
+
+ if (!lazy) {
+ _dl_md_reloc(object, DT_JMPREL, DT_PLTRELSZ);
+ } else {
+ rel = (Elf_RelA *)(object->Dyn.info[DT_JMPREL]);
+ num = (object->Dyn.info[DT_PLTRELSZ]);
+ for (i = 0; i < num/sizeof(Elf_RelA); i++, rel++) {
+ Elf_Addr *where;
+ where = (Elf_Addr *)(rel->r_offset + object->load_offs);
+ *where = object->load_offs + rel->r_addend;
+ }
+
+ }
+ /* PLT is already RO on i386, no point in mprotecting it, just GOT */
+ if (object->got_size != 0)
+ _dl_mprotect((void*)object->got_start, object->got_size,
+ PROT_READ);
+}
diff --git a/libexec/ld.so/x86_64/syscall.h b/libexec/ld.so/x86_64/syscall.h
new file mode 100644
index 00000000000..91436a14f2f
--- /dev/null
+++ b/libexec/ld.so/x86_64/syscall.h
@@ -0,0 +1,63 @@
+/* $OpenBSD: syscall.h,v 1.1 2004/02/10 14:18:14 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.
+ *
+ * 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>
+#include <sys/signal.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_fstat(int, struct stat *);
+int _dl_fcntl(int, int, ...);
+int _dl_getdirentries(int, char*, int, long *);
+int _dl_sigprocmask(int, const sigset_t *, sigset_t *);
+int _dl_sysctl(int *, u_int, void *, size_t *, void *, size_t);
+
+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__*/
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