AMD64 dynamic linker. initial work by mickey finished up by myself.

lazy binding not working yet. problem exists with gcc and -fpic jump tables.
ok mickey@

1 files changed, 87 insertions, 0 deletions

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_ */