diff --git a/sys/boot/alpha/libalpha/elf_freebsd.c b/sys/boot/alpha/libalpha/elf_freebsd.c
index 74faee2a77e..a223652c863 100644
--- a/sys/boot/alpha/libalpha/elf_freebsd.c
+++ b/sys/boot/alpha/libalpha/elf_freebsd.c
@@ -90,16 +90,16 @@
 
 #define _KERNEL
 
-static int	elf_exec(struct preloaded_file *afp);
+static int	elf64_exec(struct preloaded_file *afp);
 int		bi_load(struct bootinfo_v1 *, vm_offset_t *,
 			struct preloaded_file *);
 
-struct file_format alpha_elf = { elf_loadfile, elf_exec };
+struct file_format alpha_elf = { elf64_loadfile, elf64_exec };
 
 vm_offset_t ffp_save, ptbr_save;
 
 static int
-elf_exec(struct preloaded_file *fp)
+elf64_exec(struct preloaded_file *fp)
 {
     static struct bootinfo_v1	bootinfo_v1;
     struct file_metadata	*md;
diff --git a/sys/boot/arc/lib/elf_freebsd.c b/sys/boot/arc/lib/elf_freebsd.c
index 994a78714bb..41cdedb2481 100644
--- a/sys/boot/arc/lib/elf_freebsd.c
+++ b/sys/boot/arc/lib/elf_freebsd.c
@@ -90,16 +90,16 @@
 
 #define _KERNEL
 
-static int	elf_exec(struct preloaded_file *amp);
+static int	elf64_exec(struct preloaded_file *amp);
 int		bi_load(struct bootinfo_v1 *, vm_offset_t *,
 			struct preloaded_file *);
 
-struct file_format alpha_elf = { elf_loadfile, elf_exec };
+struct file_format alpha_elf = { elf64_loadfile, elf64_exec };
 
 vm_offset_t ffp_save, ptbr_save;
 
 static int
-elf_exec(struct preloaded_file *fp)
+elf64_exec(struct preloaded_file *fp)
 {
 #if 0
     static struct bootinfo_v1	bootinfo_v1;
diff --git a/sys/boot/common/Makefile.inc b/sys/boot/common/Makefile.inc
index 3f6c9107812..c72d09ea7e4 100644
--- a/sys/boot/common/Makefile.inc
+++ b/sys/boot/common/Makefile.inc
@@ -1,9 +1,19 @@
 # $FreeBSD$
 
 SRCS+=	bcache.c boot.c commands.c console.c devopen.c interp.c 
-SRCS+=	interp_backslash.c interp_parse.c load_elf.c ls.c misc.c 
+SRCS+=	interp_backslash.c interp_parse.c ls.c misc.c 
 SRCS+=	module.c panic.c
 
+.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64"
+SRCS+=	load_elf32.c load_elf64.c
+.endif
+.if ${MACHINE_ARCH} == "powerpc"
+SRCS+=	load_elf32.c
+.endif
+.if ${MACHINE_ARCH} == "sparc64" || ${MACHINE_ARCH} == "ia64" || ${MACHINE_ARCH} == "alpha"
+SRCS+=	load_elf64.c
+.endif
+
 .if defined(LOADER_NET_SUPPORT)
 SRCS+=	dev_net.c
 .endif
@@ -25,3 +35,6 @@ MAN+=	../forth/loader.4th.8
 
 MAN+=	loader.8
 
+.if ${MACHINE_ARCH} == "amd64"
+CFLAGS+= -m32
+.endif
diff --git a/sys/boot/common/bootstrap.h b/sys/boot/common/bootstrap.h
index d7a95a7e884..6e17be7ca38 100644
--- a/sys/boot/common/bootstrap.h
+++ b/sys/boot/common/bootstrap.h
@@ -210,7 +210,7 @@ struct preloaded_file
 struct file_format
 {
     /* Load function must return EFTYPE if it can't handle the module supplied */
-    int		(* l_load)(char *filename, vm_offset_t dest, struct preloaded_file **result);
+    int		(* l_load)(char *filename, u_int64_t dest, struct preloaded_file **result);
     /* Only a loader that will load a kernel (first module) should have an exec handler */
     int		(* l_exec)(struct preloaded_file *mp);
 };
@@ -231,7 +231,9 @@ int  file_addmodule(struct preloaded_file *fp, char *modname, int version,
 
 
 /* MI module loaders */
-int	elf_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result);
+#ifdef __elfN
+int	__elfN(loadfile)(char *filename, u_int64_t dest, struct preloaded_file **result);
+#endif
 
 /*
  * Support for commands 
diff --git a/sys/boot/common/load_elf.c b/sys/boot/common/load_elf.c
index 63f5d6418e1..b28abb820cb 100644
--- a/sys/boot/common/load_elf.c
+++ b/sys/boot/common/load_elf.c
@@ -41,6 +41,12 @@
 
 #define COPYOUT(s,d,l)	archsw.arch_copyout((vm_offset_t)(s), d, l)
 
+#if defined(__i386__) && __ELF_WORD_SIZE == 64
+#undef ELF_TARG_CLASS
+#undef ELF_TARG_MACH
+#define ELF_TARG_CLASS  ELFCLASS64
+#define ELF_TARG_MACH   EM_X86_64
+#endif
 
 typedef struct elf_file {
     Elf_Phdr 	*ph;
@@ -59,20 +65,20 @@ typedef struct elf_file {
     caddr_t	firstpage;
     size_t	firstlen;
     int		kernel;
-    vm_offset_t	off;
+    u_int64_t	off;
 } *elf_file_t;
 
-static int elf_loadimage(struct preloaded_file *mp, elf_file_t ef, vm_offset_t loadaddr);
-static int elf_lookup_symbol(struct preloaded_file *mp, elf_file_t ef, const char* name,	Elf_Sym* sym);
+static int __elfN(loadimage)(struct preloaded_file *mp, elf_file_t ef, u_int64_t loadaddr);
+static int __elfN(lookup_symbol)(struct preloaded_file *mp, elf_file_t ef, const char* name, Elf_Sym* sym);
 #ifdef __sparc__
-static void elf_reloc_ptr(struct preloaded_file *mp, elf_file_t ef,
+static void __elfN(reloc_ptr)(struct preloaded_file *mp, elf_file_t ef,
     void *p, void *val, size_t len);
 #endif
-static int elf_parse_modmetadata(struct preloaded_file *mp, elf_file_t ef);
+static int __elfN(parse_modmetadata)(struct preloaded_file *mp, elf_file_t ef);
 static char	*fake_modname(const char *name);
 
-const char	*elf_kerneltype = "elf kernel";
-const char	*elf_moduletype = "elf module";
+const char	*__elfN(kerneltype) = "elf kernel";
+const char	*__elfN(moduletype) = "elf module";
 
 /*
  * Attempt to load the file (file) as an ELF module.  It will be stored at
@@ -80,7 +86,7 @@ const char	*elf_moduletype = "elf module";
  * will be saved in (result).
  */
 int
-elf_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result)
+__elfN(loadfile)(char *filename, u_int64_t dest, struct preloaded_file **result)
 {
     struct preloaded_file	*fp, *kfp;
     struct elf_file		ef;
@@ -134,12 +140,12 @@ elf_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result)
     if (ehdr->e_type == ET_DYN) {
 	/* Looks like a kld module */
 	if (kfp == NULL) {
-	    printf("elf_loadfile: can't load module before kernel\n");
+	    printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: can't load module before kernel\n");
 	    err = EPERM;
 	    goto oerr;
 	}
-	if (strcmp(elf_kerneltype, kfp->f_type)) {
-	    printf("elf_loadfile: can't load module with kernel type '%s'\n", kfp->f_type);
+	if (strcmp(__elfN(kerneltype), kfp->f_type)) {
+	    printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: can't load module with kernel type '%s'\n", kfp->f_type);
 	    err = EPERM;
 	    goto oerr;
 	}
@@ -155,16 +161,16 @@ elf_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result)
     } else if (ehdr->e_type == ET_EXEC) {
 	/* Looks like a kernel */
 	if (kfp != NULL) {
-	    printf("elf_loadfile: kernel already loaded\n");
+	    printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: kernel already loaded\n");
 	    err = EPERM;
 	    goto oerr;
 	}
 	/* 
 	 * Calculate destination address based on kernel entrypoint 	
 	 */
-	dest = (vm_offset_t) ehdr->e_entry;
+	dest = ehdr->e_entry;
 	if (dest == 0) {
-	    printf("elf_loadfile: not a kernel (maybe static binary?)\n");
+	    printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: not a kernel (maybe static binary?)\n");
 	    err = EPERM;
 	    goto oerr;
 	}
@@ -180,23 +186,23 @@ elf_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result)
      */
     fp = file_alloc();
     if (fp == NULL) {
-	    printf("elf_loadfile: cannot allocate module info\n");
+	    printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: cannot allocate module info\n");
 	    err = EPERM;
 	    goto out;
     }
     if (ef.kernel)
 	setenv("kernelname", filename, 1);
     fp->f_name = strdup(filename);
-    fp->f_type = strdup(ef.kernel ? elf_kerneltype : elf_moduletype);
+    fp->f_type = strdup(ef.kernel ? __elfN(kerneltype) : __elfN(moduletype));
 
 #ifdef ELF_VERBOSE
     if (ef.kernel)
-	printf("%s entry at %p\n", filename, (void *) dest);
+	printf("%s entry at 0x%jx\n", filename, (uintmax_t)dest);
 #else
     printf("%s ", filename);
 #endif
 
-    fp->f_size = elf_loadimage(fp, &ef, dest);
+    fp->f_size = __elfN(loadimage)(fp, &ef, dest);
     if (fp->f_size == 0 || fp->f_addr == 0)
 	goto ioerr;
 
@@ -224,7 +230,7 @@ elf_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result)
  * the Elf header, load the image at (off)
  */
 static int
-elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
+__elfN(loadimage)(struct preloaded_file *fp, elf_file_t ef, u_int64_t off)
 {
     int 	i;
     u_int	j;
@@ -238,12 +244,13 @@ elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
     size_t	resid, chunk;
     ssize_t	result;
     vm_offset_t	dest;
-    vm_offset_t	ssym, esym;
+    Elf_Addr	ssym, esym;
     Elf_Dyn	*dp;
+    Elf_Addr	adp;
     int		ndp;
     int		symstrindex;
     int		symtabindex;
-    long	size;
+    Elf_Size	size;
     u_int	fpcopy;
 
     dp = NULL;
@@ -253,7 +260,11 @@ elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
     ehdr = ef->ehdr;
     if (ef->kernel) {
 #ifdef __i386__
+#if __ELF_WORD_SIZE == 64
+	off = - (off & 0xffffffffff000000ull);/* x86_64 relocates after locore */
+#else
 	off = - (off & 0xff000000u);	/* i386 relocates after locore */
+#endif
 #else
 	off = 0;		/* alpha is direct mapped for kernels */
 #endif
@@ -261,7 +272,7 @@ elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
     ef->off = off;
 
     if ((ehdr->e_phoff + ehdr->e_phnum * sizeof(*phdr)) > ef->firstlen) {
-	printf("elf_loadimage: program header not within first page\n");
+	printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadimage: program header not within first page\n");
 	goto out;
     }
     phdr = (Elf_Phdr *)(ef->firstpage + ehdr->e_phoff);
@@ -295,12 +306,12 @@ elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
 	if (phdr[i].p_filesz > fpcopy) {
 	    if (lseek(ef->fd, (off_t)(phdr[i].p_offset + fpcopy),
 		      SEEK_SET) == -1) {
-		printf("\nelf_loadexec: cannot seek\n");
+		printf("\nelf" __XSTRING(__ELF_WORD_SIZE) "_loadexec: cannot seek\n");
 		goto out;
 	    }
 	    if (archsw.arch_readin(ef->fd, phdr[i].p_vaddr + off + fpcopy,
 		phdr[i].p_filesz - fpcopy) != (ssize_t)(phdr[i].p_filesz - fpcopy)) {
-		printf("\nelf_loadexec: archsw.readin failed\n");
+		printf("\nelf" __XSTRING(__ELF_WORD_SIZE) "_loadexec: archsw.readin failed\n");
 		goto out;
 	    }
 	}
@@ -315,7 +326,7 @@ elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
 	    /* no archsw.arch_bzero */
 	    buf = malloc(PAGE_SIZE);
 	    if (buf == NULL) {
-		printf("\nelf_loadimage: malloc() failed\n");
+		printf("\nelf" __XSTRING(__ELF_WORD_SIZE) "_loadimage: malloc() failed\n");
 		goto out;
 	    }
 	    bzero(buf, PAGE_SIZE);
@@ -353,12 +364,12 @@ elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
     if (shdr == NULL)
 	goto nosyms;
     if (lseek(ef->fd, (off_t)ehdr->e_shoff, SEEK_SET) == -1) {
-	printf("\nelf_loadimage: cannot lseek() to section headers");
+	printf("\nelf" __XSTRING(__ELF_WORD_SIZE) "_loadimage: cannot lseek() to section headers");
 	goto nosyms;
     }
     result = read(ef->fd, shdr, chunk);
     if (result < 0 || (size_t)result != chunk) {
-	printf("\nelf_loadimage: read section headers failed");
+	printf("\nelf" __XSTRING(__ELF_WORD_SIZE) "_loadimage: read section headers failed");
 	goto nosyms;
     }
     symtabindex = -1;
@@ -410,7 +421,7 @@ elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
 
 	size = shdr[i].sh_size;
 	archsw.arch_copyin(&size, lastaddr, sizeof(size));
-	lastaddr += sizeof(long);
+	lastaddr += sizeof(size);
 
 #ifdef ELF_VERBOSE
 	printf("\n%s: 0x%lx@0x%lx -> 0x%lx-0x%lx", secname,
@@ -419,25 +430,25 @@ elf_loadimage(struct preloaded_file *fp, elf_file_t ef, vm_offset_t off)
 #else
 	if (i == symstrindex)
 	    printf("+");
-	printf("0x%lx+0x%lx", (long)sizeof(size), size);
+	printf("0x%lx+0x%lx", (long)sizeof(size), (long)size);
 #endif
 
 	if (lseek(ef->fd, (off_t)shdr[i].sh_offset, SEEK_SET) == -1) {
-	    printf("\nelf_loadimage: could not seek for symbols - skipped!");
+	    printf("\nelf" __XSTRING(__ELF_WORD_SIZE) "_loadimage: could not seek for symbols - skipped!");
 	    lastaddr = ssym;
 	    ssym = 0;
 	    goto nosyms;
 	}
 	result = archsw.arch_readin(ef->fd, lastaddr, shdr[i].sh_size);
 	if (result < 0 || (size_t)result != shdr[i].sh_size) {
-	    printf("\nelf_loadimage: could not read symbols - skipped!");
+	    printf("\nelf" __XSTRING(__ELF_WORD_SIZE) "_loadimage: could not read symbols - skipped!");
 	    lastaddr = ssym;
 	    ssym = 0;
 	    goto nosyms;
 	}
 	/* Reset offsets relative to ssym */
 	lastaddr += shdr[i].sh_size;
-	lastaddr = roundup(lastaddr, sizeof(long));
+	lastaddr = roundup(lastaddr, sizeof(size));
 	if (i == symtabindex)
 	    symtabindex = -1;
 	else if (i == symstrindex)
@@ -461,9 +472,8 @@ nosyms:
     for (i = 0; i < ehdr->e_phnum; i++) {
 	if (phdr[i].p_type == PT_DYNAMIC) {
 	    php = phdr + i;
-	    dp = (Elf_Dyn *)(php->p_vaddr);
-	    file_addmetadata(fp, MODINFOMD_DYNAMIC, sizeof(dp), &dp);
-	    dp = NULL;
+	    adp = php->p_vaddr;
+	    file_addmetadata(fp, MODINFOMD_DYNAMIC, sizeof(adp), &adp);
 	    break;
 	}
     }
@@ -485,19 +495,19 @@ nosyms:
 	    break;
 	switch (dp[i].d_tag) {
 	case DT_HASH:
-	    ef->hashtab = (Elf_Hashelt*)(dp[i].d_un.d_ptr + off);
+	    ef->hashtab = (Elf_Hashelt*)(uintptr_t)(dp[i].d_un.d_ptr + off);
 	    break;
 	case DT_STRTAB:
-	    ef->strtab = (char *)(dp[i].d_un.d_ptr + off);
+	    ef->strtab = (char *)(uintptr_t)(dp[i].d_un.d_ptr + off);
 	    break;
 	case DT_STRSZ:
 	    ef->strsz = dp[i].d_un.d_val;
 	    break;
 	case DT_SYMTAB:
-	    ef->symtab = (Elf_Sym*)(dp[i].d_un.d_ptr + off);
+	    ef->symtab = (Elf_Sym*)(uintptr_t)(dp[i].d_un.d_ptr + off);
 	    break;
 	case DT_RELA:
-	    ef->rela = (Elf_Rela *)(dp[i].d_un.d_ptr + off);
+	    ef->rela = (Elf_Rela *)(uintptr_t)(dp[i].d_un.d_ptr + off);
 	    break;
 	case DT_RELASZ:
 	    ef->relasz = dp[i].d_un.d_val;
@@ -513,7 +523,7 @@ nosyms:
     COPYOUT(ef->hashtab + 1, &ef->nchains, sizeof(ef->nchains));
     ef->buckets = ef->hashtab + 2;
     ef->chains = ef->buckets + ef->nbuckets;
-    if (elf_parse_modmetadata(fp, ef) == 0)
+    if (__elfN(parse_modmetadata)(fp, ef) == 0)
 	goto out;
 
     if (ef->kernel)			/* kernel must not depend on anything */
@@ -559,33 +569,34 @@ fake_modname(const char *name)
 }
 
 int
-elf_parse_modmetadata(struct preloaded_file *fp, elf_file_t ef)
+__elfN(parse_modmetadata)(struct preloaded_file *fp, elf_file_t ef)
 {
     struct mod_metadata md;
     struct mod_depend *mdepend;
     struct mod_version mver;
     Elf_Sym sym;
-    char *s, *v, **p, **p_stop;
+    char *s, **p, **p_stop;
     int modcnt, minfolen;
+    Elf_Addr v;
 
-    if (elf_lookup_symbol(fp, ef, "__start_set_modmetadata_set", &sym) != 0)
+    if (__elfN(lookup_symbol)(fp, ef, "__start_set_modmetadata_set", &sym) != 0)
 	return ENOENT;
-    p = (char **)(sym.st_value + ef->off);
-    if (elf_lookup_symbol(fp, ef, "__stop_set_modmetadata_set", &sym) != 0)
+    p = (char **)(uintptr_t)(sym.st_value + ef->off);
+    if (__elfN(lookup_symbol)(fp, ef, "__stop_set_modmetadata_set", &sym) != 0)
 	return ENOENT;
-    p_stop = (char **)(sym.st_value + ef->off);
+    p_stop = (char **)(uintptr_t)(sym.st_value + ef->off);
 
     modcnt = 0;
     while (p < p_stop) {
 	COPYOUT(p, &v, sizeof(v));
 #ifdef __sparc64__
-	elf_reloc_ptr(fp, ef, p, &v, sizeof(v));
+	__elfN(reloc_ptr)(fp, ef, p, &v, sizeof(v));
 #else
 	v += ef->off;
 #endif
 	COPYOUT(v, &md, sizeof(md));
 #ifdef __sparc64__
-	elf_reloc_ptr(fp, ef, v, &md, sizeof(md));
+	__elfN(reloc_ptr)(fp, ef, v, &md, sizeof(md));
 #else
 	md.md_cval += ef->off;
 	md.md_data += ef->off;
@@ -639,9 +650,9 @@ elf_hash(const char *name)
     return h;
 }
 
-static const char elf_bad_symtable[] = "elf_lookup_symbol: corrupt symbol table\n";
+static const char __elfN(bad_symtable)[] = "elf" __XSTRING(__ELF_WORD_SIZE) "_lookup_symbol: corrupt symbol table\n";
 int
-elf_lookup_symbol(struct preloaded_file *fp, elf_file_t ef, const char* name,
+__elfN(lookup_symbol)(struct preloaded_file *fp, elf_file_t ef, const char* name,
 		  Elf_Sym *symp)
 {
     Elf_Hashelt symnum;
@@ -654,13 +665,13 @@ elf_lookup_symbol(struct preloaded_file *fp, elf_file_t ef, const char* name,
 
     while (symnum != STN_UNDEF) {
 	if (symnum >= ef->nchains) {
-	    printf(elf_bad_symtable);
+	    printf(__elfN(bad_symtable));
 	    return ENOENT;
 	}
 
 	COPYOUT(ef->symtab + symnum, &sym, sizeof(sym));
 	if (sym.st_name == 0) {
-	    printf(elf_bad_symtable);
+	    printf(__elfN(bad_symtable));
 	    return ENOENT;
 	}
 
@@ -688,7 +699,7 @@ elf_lookup_symbol(struct preloaded_file *fp, elf_file_t ef, const char* name,
  * the image in-place, because this is done by kern_linker later on.
  */
 static void
-elf_reloc_ptr(struct preloaded_file *mp, elf_file_t ef,
+__elfN(reloc_ptr)(struct preloaded_file *mp, elf_file_t ef,
     void *p, void *val, size_t len)
 {
 	Elf_Addr off = (Elf_Addr)p - ef->off, word;
diff --git a/sys/boot/common/load_elf32.c b/sys/boot/common/load_elf32.c
new file mode 100644
index 00000000000..59b6496b0a2
--- /dev/null
+++ b/sys/boot/common/load_elf32.c
@@ -0,0 +1,3 @@
+/* $FreeBSD$ */
+#define __ELF_WORD_SIZE 32
+#include "load_elf.c"
diff --git a/sys/boot/common/load_elf64.c b/sys/boot/common/load_elf64.c
new file mode 100644
index 00000000000..d5f99d90ee4
--- /dev/null
+++ b/sys/boot/common/load_elf64.c
@@ -0,0 +1,3 @@
+/* $FreeBSD$ */
+#define __ELF_WORD_SIZE 64
+#include "load_elf.c"
diff --git a/sys/boot/efi/libefi/elf_freebsd.c b/sys/boot/efi/libefi/elf_freebsd.c
index 7df9950bbce..27d2b6e0856 100644
--- a/sys/boot/efi/libefi/elf_freebsd.c
+++ b/sys/boot/efi/libefi/elf_freebsd.c
@@ -94,9 +94,9 @@
 
 #define _KERNEL
 
-static int	elf_exec(struct preloaded_file *amp);
+static int	elf64_exec(struct preloaded_file *amp);
 
-struct file_format ia64_elf = { elf_loadfile, elf_exec };
+struct file_format ia64_elf = { elf64_loadfile, elf64_exec };
 
 static __inline u_int64_t
 disable_ic()
@@ -136,7 +136,7 @@ enter_kernel(u_int64_t start, struct bootinfo *bi)
 }
 
 static int
-elf_exec(struct preloaded_file *fp)
+elf64_exec(struct preloaded_file *fp)
 {
 	struct file_metadata	*md;
 	Elf_Ehdr		*hdr;
diff --git a/sys/boot/i386/libi386/Makefile b/sys/boot/i386/libi386/Makefile
index 19fa0bf3647..b7cb2cc852b 100644
--- a/sys/boot/i386/libi386/Makefile
+++ b/sys/boot/i386/libi386/Makefile
@@ -4,9 +4,11 @@ LIB=			i386
 INTERNALLIB=		true
 
 SRCS=	biosacpi.c bioscd.c biosdisk.c biosmem.c biospnp.c \
-	biospci.c bootinfo.c comconsole.c devicename.c elf_freebsd.c gatea20.c \
+	biospci.c biossmap.c bootinfo.c bootinfo32.c bootinfo64.c \
+	comconsole.c devicename.c elf32_freebsd.c \
+	elf64_freebsd.c gatea20.c \
 	i386_copy.c i386_module.c nullconsole.c pxe.c pxetramp.s \
-	time.c vidconsole.c
+	time.c vidconsole.c amd64_tramp.S
 
 CFLAGS+=	-ffreestanding
 BOOT_COMCONSOLE_PORT?= 0x3f8
diff --git a/sys/boot/i386/libi386/amd64_tramp.S b/sys/boot/i386/libi386/amd64_tramp.S
new file mode 100644
index 00000000000..012512d8c8a
--- /dev/null
+++ b/sys/boot/i386/libi386/amd64_tramp.S
@@ -0,0 +1,113 @@
+/*-
+ * Copyright (c) 2003  Peter Wemm <peter@FreeBSD.org>
+ * 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 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Quick and dirty trampoline to get into 64 bit (long) mode and running
+ * with paging enabled so that we enter the kernel at its linked address.
+ */
+#define MSR_EFER	0xc0000080
+#define EFER_LME	0x00000100
+#define CR4_PAE		0x00000020
+#define CR4_PSE		0x00000010
+#define CR0_PG		0x80000000
+
+/* GRRR. Deal with BTX that links us for a non-zero location */
+#define VPBASE	0xa000
+#define VTOP(x)	((x) + VPBASE)
+
+	.data
+
+	.p2align 12,0x40
+
+	.globl	PT4
+PT4:
+	.space	0x1000
+	.globl	PT3
+PT3:
+	.space	0x1000
+	.globl	PT2
+PT2:
+	.space	0x1000
+
+gdtdesc:
+	.word	gdtend - gdt
+	.long	VTOP(gdt)		# low
+	.long	0			# high
+
+gdt:
+	.long	0			# null descriptor
+	.long	0
+	.long	0x00000000		# %cs
+	.long	0x00209800
+	.long	0x00000000		# %ds
+	.long	0x00008000
+gdtend:
+	
+	.text
+	.code32
+
+	.globl	amd64_tramp
+amd64_tramp:
+	/* Be sure that interrupts are disabled */
+	cli
+
+	/* Turn on EFER.LME */
+	movl	$MSR_EFER, %ecx
+	rdmsr
+	orl	$EFER_LME, %eax
+	wrmsr
+
+	/* Turn on PAE */
+	movl	%cr4, %eax
+	orl	$(CR4_PAE | CR4_PSE), %eax
+	movl	%eax, %cr4
+
+	/* Set %cr3 for PT4 */
+	movl	$VTOP(PT4), %eax
+	movl	%eax, %cr3
+
+	/* Turn on paging (implicitly sets EFER.LMA) */
+	movl	%cr0, %eax
+	orl	$CR0_PG, %eax
+	movl	%eax, %cr0
+	
+	/* Now we're in compatability mode. set %cs for long mode */
+	movl	$VTOP(gdtdesc), %eax
+	movl	VTOP(entry_hi), %esi
+	movl	VTOP(entry_lo), %edi
+	lgdt	(%eax)
+	ljmp	$0x8, $VTOP(longmode)
+
+	.code64
+longmode:
+	/* We're still running V=P, jump to entry point */
+	movl	%esi, %eax
+	salq	$32, %rax
+	movl	%edi, %eax
+	pushq	%rax
+	ret
diff --git a/sys/boot/i386/libi386/biossmap.c b/sys/boot/i386/libi386/biossmap.c
new file mode 100644
index 00000000000..1548dd901e1
--- /dev/null
+++ b/sys/boot/i386/libi386/biossmap.c
@@ -0,0 +1,107 @@
+/*-
+ * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
+ * 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 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Obtain memory configuration information from the BIOS
+ */
+#include <stand.h>
+#include <sys/param.h>
+#include <sys/linker.h>
+#include <machine/metadata.h>
+#include "bootstrap.h"
+#include "libi386.h"
+#include "btxv86.h"
+
+#define SMAPSIG	0x534D4150
+
+struct smap {
+	u_int64_t	base;
+	u_int64_t	length;
+	u_int32_t	type;
+} __packed;
+
+static struct smap smap;
+
+static struct smap *smapbase;
+static int smaplen;
+
+void
+bios_getsmap(void)
+{
+	int n;
+
+	n = 0;
+	smaplen = 0;
+	/* Count up segments in system memory map */
+	v86.ebx = 0;
+	do {
+		v86.ctl = V86_FLAGS;
+		v86.addr = 0x15;		/* int 0x15 function 0xe820*/
+		v86.eax = 0xe820;
+		v86.ecx = sizeof(struct smap);
+		v86.edx = SMAPSIG;
+		v86.es = VTOPSEG(&smap);
+		v86.edi = VTOPOFF(&smap);
+		v86int();
+		if ((v86.efl & 1) || (v86.eax != SMAPSIG))
+			break;
+		n++;
+	} while (v86.ebx != 0);
+	if (n == 0)
+		return;
+	n += 10;	/* spare room */
+	smapbase = malloc(n * sizeof(*smapbase));
+
+	/* Save system memory map */
+	v86.ebx = 0;
+	do {
+		v86.ctl = V86_FLAGS;
+		v86.addr = 0x15;		/* int 0x15 function 0xe820*/
+		v86.eax = 0xe820;
+		v86.ecx = sizeof(struct smap);
+		v86.edx = SMAPSIG;
+		v86.es = VTOPSEG(&smapbase[smaplen]);
+		v86.edi = VTOPOFF(&smapbase[smaplen]);
+		v86int();
+		smaplen++;
+		if ((v86.efl & 1) || (v86.eax != SMAPSIG))
+			break;
+	} while (v86.ebx != 0 && smaplen < n);
+}
+void
+bios_addsmapdata(struct preloaded_file *kfp)
+{
+	int len;
+
+	if (smapbase == 0 || smaplen == 0)
+		return;
+	len = smaplen * sizeof(*smapbase);
+	file_addmetadata(kfp, MODINFOMD_SMAP, len, smapbase);
+	/* Temporary compatability with older development kernels */
+	file_addmetadata(kfp, 0x0009, len, smapbase);
+}
diff --git a/sys/boot/i386/libi386/bootinfo.c b/sys/boot/i386/libi386/bootinfo.c
index fb269dfa43c..5de13a7a991 100644
--- a/sys/boot/i386/libi386/bootinfo.c
+++ b/sys/boot/i386/libi386/bootinfo.c
@@ -30,13 +30,10 @@
 #include <sys/param.h>
 #include <sys/reboot.h>
 #include <sys/linker.h>
-#include <machine/bootinfo.h>
 #include "bootstrap.h"
 #include "libi386.h"
 #include "btxv86.h"
 
-static struct bootinfo	bi;
-
 /*
  * Return a 'boothowto' value corresponding to the kernel arguments in
  * (kargs) and any relevant environment variables.
@@ -58,8 +55,6 @@ static struct
     {NULL,	0}
 };
 
-vm_offset_t	bi_copymodules(vm_offset_t addr);
-
 int
 bi_getboothowto(char *kargs)
 {
@@ -159,205 +154,3 @@ bi_copyenv(vm_offset_t addr)
     addr++;
     return(addr);
 }
-
-/*
- * Copy module-related data into the load area, where it can be
- * used as a directory for loaded modules.
- *
- * Module data is presented in a self-describing format.  Each datum
- * is preceded by a 32-bit identifier and a 32-bit size field.
- *
- * Currently, the following data are saved:
- *
- * MOD_NAME	(variable)		module name (string)
- * MOD_TYPE	(variable)		module type (string)
- * MOD_ARGS	(variable)		module parameters (string)
- * MOD_ADDR	sizeof(vm_offset_t)	module load address
- * MOD_SIZE	sizeof(size_t)		module size
- * MOD_METADATA	(variable)		type-specific metadata
- */
-#define COPY32(v, a) {				\
-    u_int32_t	x = (v);			\
-    i386_copyin(&x, a, sizeof(x));		\
-    a += sizeof(x);				\
-}
-
-#define MOD_STR(t, a, s) {			\
-    COPY32(t, a);				\
-    COPY32(strlen(s) + 1, a);			\
-    i386_copyin(s, a, strlen(s) + 1);		\
-    a += roundup(strlen(s) + 1, sizeof(u_long));\
-}
-
-#define MOD_NAME(a, s)	MOD_STR(MODINFO_NAME, a, s)
-#define MOD_TYPE(a, s)	MOD_STR(MODINFO_TYPE, a, s)
-#define MOD_ARGS(a, s)	MOD_STR(MODINFO_ARGS, a, s)
-
-#define MOD_VAR(t, a, s) {			\
-    COPY32(t, a);				\
-    COPY32(sizeof(s), a);			\
-    i386_copyin(&s, a, sizeof(s));		\
-    a += roundup(sizeof(s), sizeof(u_long));	\
-}
-
-#define MOD_ADDR(a, s)	MOD_VAR(MODINFO_ADDR, a, s)
-#define MOD_SIZE(a, s)	MOD_VAR(MODINFO_SIZE, a, s)
-
-#define MOD_METADATA(a, mm) {			\
-    COPY32(MODINFO_METADATA | mm->md_type, a);	\
-    COPY32(mm->md_size, a);			\
-    i386_copyin(mm->md_data, a, mm->md_size);	\
-    a += roundup(mm->md_size, sizeof(u_long));\
-}
-
-#define MOD_END(a) {				\
-    COPY32(MODINFO_END, a);			\
-    COPY32(0, a);				\
-}
-
-vm_offset_t
-bi_copymodules(vm_offset_t addr)
-{
-    struct preloaded_file	*fp;
-    struct file_metadata	*md;
-
-    /* start with the first module on the list, should be the kernel */
-    for (fp = file_findfile(NULL, NULL); fp != NULL; fp = fp->f_next) {
-
-	MOD_NAME(addr, fp->f_name);	/* this field must come first */
-	MOD_TYPE(addr, fp->f_type);
-	if (fp->f_args)
-	    MOD_ARGS(addr, fp->f_args);
-	MOD_ADDR(addr, fp->f_addr);
-	MOD_SIZE(addr, fp->f_size);
-	for (md = fp->f_metadata; md != NULL; md = md->md_next)
-	    if (!(md->md_type & MODINFOMD_NOCOPY))
-		MOD_METADATA(addr, md);
-    }
-    MOD_END(addr);
-    return(addr);
-}
-
-/*
- * Load the information expected by an i386 kernel.
- *
- * - The 'boothowto' argument is constructed
- * - The 'bootdev' argument is constructed
- * - The 'bootinfo' struct is constructed, and copied into the kernel space.
- * - The kernel environment is copied into kernel space.
- * - Module metadata are formatted and placed in kernel space.
- */
-int
-bi_load(char *args, int *howtop, int *bootdevp, vm_offset_t *bip)
-{
-    struct preloaded_file	*xp;
-    struct i386_devdesc		*rootdev;
-    vm_offset_t			addr;
-    char			*rootdevname;
-    int				bootdevnr, i;
-    u_int			pad;
-    char			*kernelname;
-    const char			*kernelpath;
-
-    *howtop = bi_getboothowto(args);
-
-    /* 
-     * Allow the environment variable 'rootdev' to override the supplied device 
-     * This should perhaps go to MI code and/or have $rootdev tested/set by
-     * MI code before launching the kernel.
-     */
-    rootdevname = getenv("rootdev");
-    i386_getdev((void **)(&rootdev), rootdevname, NULL);
-    if (rootdev == NULL) {		/* bad $rootdev/$currdev */
-	printf("can't determine root device\n");
-	return(EINVAL);
-    }
-
-    /* Try reading the /etc/fstab file to select the root device */
-    getrootmount(i386_fmtdev((void *)rootdev));
-
-    /* Do legacy rootdev guessing */
-
-    /* XXX - use a default bootdev of 0.  Is this ok??? */
-    bootdevnr = 0;
-
-    switch(rootdev->d_type) {
-    case DEVT_CD:
-	    /* Pass in BIOS device number. */
-	    bi.bi_bios_dev = bc_unit2bios(rootdev->d_kind.bioscd.unit);
-	    bootdevnr = bc_getdev(rootdev);
-	    break;
-
-    case DEVT_DISK:
-	/* pass in the BIOS device number of the current disk */
-	bi.bi_bios_dev = bd_unit2bios(rootdev->d_kind.biosdisk.unit);
-	bootdevnr = bd_getdev(rootdev);
-	break;
-
-    case DEVT_NET:
-	    break;
-	    
-    default:
-	printf("WARNING - don't know how to boot from device type %d\n", rootdev->d_type);
-    }
-    if (bootdevnr == -1) {
-	printf("root device %s invalid\n", i386_fmtdev(rootdev));
-	return (EINVAL);
-    }
-    free(rootdev);
-    *bootdevp = bootdevnr;
-
-    /* legacy bootinfo structure */
-    bi.bi_version = BOOTINFO_VERSION;
-    bi.bi_kernelname = 0;		/* XXX char * -> kernel name */
-    bi.bi_nfs_diskless = 0;		/* struct nfs_diskless * */
-    bi.bi_n_bios_used = 0;		/* XXX would have to hook biosdisk driver for these */
-    for (i = 0; i < N_BIOS_GEOM; i++)
-        bi.bi_bios_geom[i] = bd_getbigeom(i);
-    bi.bi_size = sizeof(bi);
-    bi.bi_memsizes_valid = 1;
-    bi.bi_basemem = bios_basemem / 1024;
-    bi.bi_extmem = bios_extmem / 1024;
-
-    /* find the last module in the chain */
-    addr = 0;
-    for (xp = file_findfile(NULL, NULL); xp != NULL; xp = xp->f_next) {
-	if (addr < (xp->f_addr + xp->f_size))
-	    addr = xp->f_addr + xp->f_size;
-    }
-    /* pad to a page boundary */
-    pad = (u_int)addr & PAGE_MASK;
-    if (pad != 0) {
-	pad = PAGE_SIZE - pad;
-	addr += pad;
-    }
-
-    /* copy our environment */
-    bi.bi_envp = addr;
-    addr = bi_copyenv(addr);
-
-    /* pad to a page boundary */
-    pad = (u_int)addr & PAGE_MASK;
-    if (pad != 0) {
-	pad = PAGE_SIZE - pad;
-	addr += pad;
-    }
-    /* copy module list and metadata */
-    bi.bi_modulep = addr;
-    addr = bi_copymodules(addr);
-
-    /* all done copying stuff in, save end of loaded object space */
-    bi.bi_kernend = addr;
-
-    *howtop |= RB_BOOTINFO;		/* it's there now */
-
-    /*
-     * Get the kernel name, strip off any device prefix.
-     */
-    kernelname = getenv("kernelname");
-    i386_getdev(NULL, kernelname, &kernelpath);
-    bi.bi_kernelname = VTOP(kernelpath);
-    *bip = VTOP(&bi);
-
-    return(0);
-}
diff --git a/sys/boot/i386/libi386/bootinfo32.c b/sys/boot/i386/libi386/bootinfo32.c
index fb269dfa43c..a2fc2c8d036 100644
--- a/sys/boot/i386/libi386/bootinfo32.c
+++ b/sys/boot/i386/libi386/bootinfo32.c
@@ -35,130 +35,7 @@
 #include "libi386.h"
 #include "btxv86.h"
 
-static struct bootinfo	bi;
-
-/*
- * Return a 'boothowto' value corresponding to the kernel arguments in
- * (kargs) and any relevant environment variables.
- */
-static struct 
-{
-    const char	*ev;
-    int		mask;
-} howto_names[] = {
-    {"boot_askname",	RB_ASKNAME},
-    {"boot_cdrom",	RB_CDROM},
-    {"boot_userconfig",	RB_CONFIG},
-    {"boot_ddb",	RB_KDB},
-    {"boot_gdb",	RB_GDB},
-    {"boot_single",	RB_SINGLE},
-    {"boot_verbose",	RB_VERBOSE},
-    {"boot_multicons",	RB_MULTIPLE},
-    {"boot_serial",	RB_SERIAL},
-    {NULL,	0}
-};
-
-vm_offset_t	bi_copymodules(vm_offset_t addr);
-
-int
-bi_getboothowto(char *kargs)
-{
-    char	*cp;
-    int		howto;
-    int		active;
-    int		i;
-    
-    /* Parse kargs */
-    howto = 0;
-    if (kargs  != NULL) {
-	cp = kargs;
-	active = 0;
-	while (*cp != 0) {
-	    if (!active && (*cp == '-')) {
-		active = 1;
-	    } else if (active)
-		switch (*cp) {
-		case 'a':
-		    howto |= RB_ASKNAME;
-		    break;
-		case 'c':
-		    howto |= RB_CONFIG;
-		    break;
-		case 'C':
-		    howto |= RB_CDROM;
-		    break;
-		case 'd':
-		    howto |= RB_KDB;
-		    break;
-		case 'D':
-		    howto |= RB_MULTIPLE;
-		    break;
-		case 'm':
-		    howto |= RB_MUTE;
-		    break;
-		case 'g':
-		    howto |= RB_GDB;
-		    break;
-		case 'h':
-		    howto |= RB_SERIAL;
-		    break;
-		case 'p':
-		    howto |= RB_PAUSE;
-		    break;
-		case 'r':
-		    howto |= RB_DFLTROOT;
-		    break;
-		case 's':
-		    howto |= RB_SINGLE;
-		    break;
-		case 'v':
-		    howto |= RB_VERBOSE;
-		    break;
-		default:
-		    active = 0;
-		    break;
-		}
-	    cp++;
-	}
-    }
-    /* get equivalents from the environment */
-    for (i = 0; howto_names[i].ev != NULL; i++)
-	if (getenv(howto_names[i].ev) != NULL)
-	    howto |= howto_names[i].mask;
-    if (!strcmp(getenv("console"), "comconsole"))
-	howto |= RB_SERIAL;
-    if (!strcmp(getenv("console"), "nullconsole"))
-	howto |= RB_MUTE;
-    return(howto);
-}
-
-/*
- * Copy the environment into the load area starting at (addr).
- * Each variable is formatted as <name>=<value>, with a single nul
- * separating each variable, and a double nul terminating the environment.
- */
-vm_offset_t
-bi_copyenv(vm_offset_t addr)
-{
-    struct env_var	*ep;
-    
-    /* traverse the environment */
-    for (ep = environ; ep != NULL; ep = ep->ev_next) {
-	i386_copyin(ep->ev_name, addr, strlen(ep->ev_name));
-	addr += strlen(ep->ev_name);
-	i386_copyin("=", addr, 1);
-	addr++;
-	if (ep->ev_value != NULL) {
-	    i386_copyin(ep->ev_value, addr, strlen(ep->ev_value));
-	    addr += strlen(ep->ev_value);
-	}
-	i386_copyin("", addr, 1);
-	addr++;
-    }
-    i386_copyin("", addr, 1);
-    addr++;
-    return(addr);
-}
+static struct bootinfo  bi;
 
 /*
  * Copy module-related data into the load area, where it can be
@@ -176,65 +53,71 @@ bi_copyenv(vm_offset_t addr)
  * MOD_SIZE	sizeof(size_t)		module size
  * MOD_METADATA	(variable)		type-specific metadata
  */
-#define COPY32(v, a) {				\
+#define COPY32(v, a, c) {			\
     u_int32_t	x = (v);			\
-    i386_copyin(&x, a, sizeof(x));		\
+    if (c)					\
+	i386_copyin(&x, a, sizeof(x));		\
     a += sizeof(x);				\
 }
 
-#define MOD_STR(t, a, s) {			\
-    COPY32(t, a);				\
-    COPY32(strlen(s) + 1, a);			\
-    i386_copyin(s, a, strlen(s) + 1);		\
+#define MOD_STR(t, a, s, c) {			\
+    COPY32(t, a, c);				\
+    COPY32(strlen(s) + 1, a, c);		\
+    if (c)					\
+	i386_copyin(s, a, strlen(s) + 1);	\
     a += roundup(strlen(s) + 1, sizeof(u_long));\
 }
 
-#define MOD_NAME(a, s)	MOD_STR(MODINFO_NAME, a, s)
-#define MOD_TYPE(a, s)	MOD_STR(MODINFO_TYPE, a, s)
-#define MOD_ARGS(a, s)	MOD_STR(MODINFO_ARGS, a, s)
+#define MOD_NAME(a, s, c)	MOD_STR(MODINFO_NAME, a, s, c)
+#define MOD_TYPE(a, s, c)	MOD_STR(MODINFO_TYPE, a, s, c)
+#define MOD_ARGS(a, s, c)	MOD_STR(MODINFO_ARGS, a, s, c)
 
-#define MOD_VAR(t, a, s) {			\
-    COPY32(t, a);				\
-    COPY32(sizeof(s), a);			\
-    i386_copyin(&s, a, sizeof(s));		\
+#define MOD_VAR(t, a, s, c) {			\
+    COPY32(t, a, c);				\
+    COPY32(sizeof(s), a, c);			\
+    if (c)					\
+	i386_copyin(&s, a, sizeof(s));		\
     a += roundup(sizeof(s), sizeof(u_long));	\
 }
 
-#define MOD_ADDR(a, s)	MOD_VAR(MODINFO_ADDR, a, s)
-#define MOD_SIZE(a, s)	MOD_VAR(MODINFO_SIZE, a, s)
+#define MOD_ADDR(a, s, c)	MOD_VAR(MODINFO_ADDR, a, s, c)
+#define MOD_SIZE(a, s, c)	MOD_VAR(MODINFO_SIZE, a, s, c)
 
-#define MOD_METADATA(a, mm) {			\
-    COPY32(MODINFO_METADATA | mm->md_type, a);	\
-    COPY32(mm->md_size, a);			\
-    i386_copyin(mm->md_data, a, mm->md_size);	\
+#define MOD_METADATA(a, mm, c) {		\
+    COPY32(MODINFO_METADATA | mm->md_type, a, c); \
+    COPY32(mm->md_size, a, c);			\
+    if (c)					\
+	i386_copyin(mm->md_data, a, mm->md_size); \
     a += roundup(mm->md_size, sizeof(u_long));\
 }
 
-#define MOD_END(a) {				\
-    COPY32(MODINFO_END, a);			\
-    COPY32(0, a);				\
+#define MOD_END(a, c) {				\
+    COPY32(MODINFO_END, a, c);			\
+    COPY32(0, a, c);				\
 }
 
-vm_offset_t
-bi_copymodules(vm_offset_t addr)
+static vm_offset_t
+bi_copymodules32(vm_offset_t addr)
 {
     struct preloaded_file	*fp;
     struct file_metadata	*md;
+    int				c;
 
+    c = addr != 0;
     /* start with the first module on the list, should be the kernel */
     for (fp = file_findfile(NULL, NULL); fp != NULL; fp = fp->f_next) {
 
-	MOD_NAME(addr, fp->f_name);	/* this field must come first */
-	MOD_TYPE(addr, fp->f_type);
+	MOD_NAME(addr, fp->f_name, c);	/* this field must come first */
+	MOD_TYPE(addr, fp->f_type, c);
 	if (fp->f_args)
-	    MOD_ARGS(addr, fp->f_args);
-	MOD_ADDR(addr, fp->f_addr);
-	MOD_SIZE(addr, fp->f_size);
+	    MOD_ARGS(addr, fp->f_args, c);
+	MOD_ADDR(addr, fp->f_addr, c);
+	MOD_SIZE(addr, fp->f_size, c);
 	for (md = fp->f_metadata; md != NULL; md = md->md_next)
 	    if (!(md->md_type & MODINFOMD_NOCOPY))
-		MOD_METADATA(addr, md);
+		MOD_METADATA(addr, md, c);
     }
-    MOD_END(addr);
+    MOD_END(addr, c);
     return(addr);
 }
 
@@ -248,18 +131,22 @@ bi_copymodules(vm_offset_t addr)
  * - Module metadata are formatted and placed in kernel space.
  */
 int
-bi_load(char *args, int *howtop, int *bootdevp, vm_offset_t *bip)
+bi_load32(char *args, int *howtop, int *bootdevp, vm_offset_t *bip, vm_offset_t *modulep, vm_offset_t *kernendp)
 {
-    struct preloaded_file	*xp;
+    struct preloaded_file	*xp, *kfp;
     struct i386_devdesc		*rootdev;
+    struct file_metadata	*md;
     vm_offset_t			addr;
+    vm_offset_t			kernend;
+    vm_offset_t			envp;
+    vm_offset_t			size;
+    vm_offset_t			ssym, esym;
     char			*rootdevname;
-    int				bootdevnr, i;
-    u_int			pad;
+    int				bootdevnr, i, howto;
     char			*kernelname;
     const char			*kernelpath;
 
-    *howtop = bi_getboothowto(args);
+    howto = bi_getboothowto(args);
 
     /* 
      * Allow the environment variable 'rootdev' to override the supplied device 
@@ -305,9 +192,60 @@ bi_load(char *args, int *howtop, int *bootdevp, vm_offset_t *bip)
 	return (EINVAL);
     }
     free(rootdev);
-    *bootdevp = bootdevnr;
+
+    /* find the last module in the chain */
+    addr = 0;
+    for (xp = file_findfile(NULL, NULL); xp != NULL; xp = xp->f_next) {
+	if (addr < (xp->f_addr + xp->f_size))
+	    addr = xp->f_addr + xp->f_size;
+    }
+    /* pad to a page boundary */
+    addr = roundup(addr, PAGE_SIZE);
+
+    /* copy our environment */
+    envp = addr;
+    addr = bi_copyenv(addr);
+
+    /* pad to a page boundary */
+    addr = roundup(addr, PAGE_SIZE);
+
+    kfp = file_findfile(NULL, "elf64 kernel");
+    if (kfp == NULL)
+      kfp = file_findfile(NULL, "elf32 kernel");
+    if (kfp == NULL)
+	panic("can't find kernel file");
+    kernend = 0;	/* fill it in later */
+    file_addmetadata(kfp, MODINFOMD_HOWTO, sizeof howto, &howto);
+    file_addmetadata(kfp, MODINFOMD_ENVP, sizeof envp, &envp);
+    file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof kernend, &kernend);
+    bios_addsmapdata(kfp);
+
+    /* Figure out the size and location of the metadata */
+    *modulep = addr;
+    size = bi_copymodules32(0);
+    kernend = roundup(addr + size, PAGE_SIZE);
+    *kernendp = kernend;
+
+    /* patch MODINFOMD_KERNEND */
+    md = file_findmetadata(kfp, MODINFOMD_KERNEND);
+    bcopy(&kernend, md->md_data, sizeof kernend);
+
+    /* copy module list and metadata */
+    (void)bi_copymodules32(addr);
+
+    ssym = esym = 0;
+    md = file_findmetadata(kfp, MODINFOMD_SSYM);
+    if (md != NULL)
+	ssym = *((vm_offset_t *)&(md->md_data));
+    md = file_findmetadata(kfp, MODINFOMD_ESYM);
+    if (md != NULL)
+	esym = *((vm_offset_t *)&(md->md_data));
+    if (ssym == 0 || esym == 0)
+	ssym = esym = 0;		/* sanity */
 
     /* legacy bootinfo structure */
+    kernelname = getenv("kernelname");
+    i386_getdev(NULL, kernelname, &kernelpath);
     bi.bi_version = BOOTINFO_VERSION;
     bi.bi_kernelname = 0;		/* XXX char * -> kernel name */
     bi.bi_nfs_diskless = 0;		/* struct nfs_diskless * */
@@ -318,45 +256,16 @@ bi_load(char *args, int *howtop, int *bootdevp, vm_offset_t *bip)
     bi.bi_memsizes_valid = 1;
     bi.bi_basemem = bios_basemem / 1024;
     bi.bi_extmem = bios_extmem / 1024;
-
-    /* find the last module in the chain */
-    addr = 0;
-    for (xp = file_findfile(NULL, NULL); xp != NULL; xp = xp->f_next) {
-	if (addr < (xp->f_addr + xp->f_size))
-	    addr = xp->f_addr + xp->f_size;
-    }
-    /* pad to a page boundary */
-    pad = (u_int)addr & PAGE_MASK;
-    if (pad != 0) {
-	pad = PAGE_SIZE - pad;
-	addr += pad;
-    }
-
-    /* copy our environment */
-    bi.bi_envp = addr;
-    addr = bi_copyenv(addr);
-
-    /* pad to a page boundary */
-    pad = (u_int)addr & PAGE_MASK;
-    if (pad != 0) {
-	pad = PAGE_SIZE - pad;
-	addr += pad;
-    }
-    /* copy module list and metadata */
-    bi.bi_modulep = addr;
-    addr = bi_copymodules(addr);
-
-    /* all done copying stuff in, save end of loaded object space */
-    bi.bi_kernend = addr;
-
-    *howtop |= RB_BOOTINFO;		/* it's there now */
-
-    /*
-     * Get the kernel name, strip off any device prefix.
-     */
-    kernelname = getenv("kernelname");
-    i386_getdev(NULL, kernelname, &kernelpath);
+    bi.bi_envp = envp;
+    bi.bi_modulep = *modulep;
+    bi.bi_kernend = kernend;
     bi.bi_kernelname = VTOP(kernelpath);
+    bi.bi_symtab = ssym;       /* XXX this is only the primary kernel symtab */
+    bi.bi_esymtab = esym;
+
+    /* legacy boot arguments */
+    *howtop = howto | RB_BOOTINFO;
+    *bootdevp = bootdevnr;
     *bip = VTOP(&bi);
 
     return(0);
diff --git a/sys/boot/i386/libi386/bootinfo64.c b/sys/boot/i386/libi386/bootinfo64.c
index fb269dfa43c..5398a0c0a41 100644
--- a/sys/boot/i386/libi386/bootinfo64.c
+++ b/sys/boot/i386/libi386/bootinfo64.c
@@ -35,131 +35,6 @@
 #include "libi386.h"
 #include "btxv86.h"
 
-static struct bootinfo	bi;
-
-/*
- * Return a 'boothowto' value corresponding to the kernel arguments in
- * (kargs) and any relevant environment variables.
- */
-static struct 
-{
-    const char	*ev;
-    int		mask;
-} howto_names[] = {
-    {"boot_askname",	RB_ASKNAME},
-    {"boot_cdrom",	RB_CDROM},
-    {"boot_userconfig",	RB_CONFIG},
-    {"boot_ddb",	RB_KDB},
-    {"boot_gdb",	RB_GDB},
-    {"boot_single",	RB_SINGLE},
-    {"boot_verbose",	RB_VERBOSE},
-    {"boot_multicons",	RB_MULTIPLE},
-    {"boot_serial",	RB_SERIAL},
-    {NULL,	0}
-};
-
-vm_offset_t	bi_copymodules(vm_offset_t addr);
-
-int
-bi_getboothowto(char *kargs)
-{
-    char	*cp;
-    int		howto;
-    int		active;
-    int		i;
-    
-    /* Parse kargs */
-    howto = 0;
-    if (kargs  != NULL) {
-	cp = kargs;
-	active = 0;
-	while (*cp != 0) {
-	    if (!active && (*cp == '-')) {
-		active = 1;
-	    } else if (active)
-		switch (*cp) {
-		case 'a':
-		    howto |= RB_ASKNAME;
-		    break;
-		case 'c':
-		    howto |= RB_CONFIG;
-		    break;
-		case 'C':
-		    howto |= RB_CDROM;
-		    break;
-		case 'd':
-		    howto |= RB_KDB;
-		    break;
-		case 'D':
-		    howto |= RB_MULTIPLE;
-		    break;
-		case 'm':
-		    howto |= RB_MUTE;
-		    break;
-		case 'g':
-		    howto |= RB_GDB;
-		    break;
-		case 'h':
-		    howto |= RB_SERIAL;
-		    break;
-		case 'p':
-		    howto |= RB_PAUSE;
-		    break;
-		case 'r':
-		    howto |= RB_DFLTROOT;
-		    break;
-		case 's':
-		    howto |= RB_SINGLE;
-		    break;
-		case 'v':
-		    howto |= RB_VERBOSE;
-		    break;
-		default:
-		    active = 0;
-		    break;
-		}
-	    cp++;
-	}
-    }
-    /* get equivalents from the environment */
-    for (i = 0; howto_names[i].ev != NULL; i++)
-	if (getenv(howto_names[i].ev) != NULL)
-	    howto |= howto_names[i].mask;
-    if (!strcmp(getenv("console"), "comconsole"))
-	howto |= RB_SERIAL;
-    if (!strcmp(getenv("console"), "nullconsole"))
-	howto |= RB_MUTE;
-    return(howto);
-}
-
-/*
- * Copy the environment into the load area starting at (addr).
- * Each variable is formatted as <name>=<value>, with a single nul
- * separating each variable, and a double nul terminating the environment.
- */
-vm_offset_t
-bi_copyenv(vm_offset_t addr)
-{
-    struct env_var	*ep;
-    
-    /* traverse the environment */
-    for (ep = environ; ep != NULL; ep = ep->ev_next) {
-	i386_copyin(ep->ev_name, addr, strlen(ep->ev_name));
-	addr += strlen(ep->ev_name);
-	i386_copyin("=", addr, 1);
-	addr++;
-	if (ep->ev_value != NULL) {
-	    i386_copyin(ep->ev_value, addr, strlen(ep->ev_value));
-	    addr += strlen(ep->ev_value);
-	}
-	i386_copyin("", addr, 1);
-	addr++;
-    }
-    i386_copyin("", addr, 1);
-    addr++;
-    return(addr);
-}
-
 /*
  * Copy module-related data into the load area, where it can be
  * used as a directory for loaded modules.
@@ -176,65 +51,74 @@ bi_copyenv(vm_offset_t addr)
  * MOD_SIZE	sizeof(size_t)		module size
  * MOD_METADATA	(variable)		type-specific metadata
  */
-#define COPY32(v, a) {				\
+#define COPY32(v, a, c) {			\
     u_int32_t	x = (v);			\
-    i386_copyin(&x, a, sizeof(x));		\
+    if (c)					\
+	i386_copyin(&x, a, sizeof(x));		\
     a += sizeof(x);				\
 }
 
-#define MOD_STR(t, a, s) {			\
-    COPY32(t, a);				\
-    COPY32(strlen(s) + 1, a);			\
-    i386_copyin(s, a, strlen(s) + 1);		\
-    a += roundup(strlen(s) + 1, sizeof(u_long));\
+#define MOD_STR(t, a, s, c) {			\
+    COPY32(t, a, c);				\
+    COPY32(strlen(s) + 1, a, c);		\
+    if (c)					\
+	i386_copyin(s, a, strlen(s) + 1);	\
+    a += roundup(strlen(s) + 1, sizeof(u_int64_t));\
 }
 
-#define MOD_NAME(a, s)	MOD_STR(MODINFO_NAME, a, s)
-#define MOD_TYPE(a, s)	MOD_STR(MODINFO_TYPE, a, s)
-#define MOD_ARGS(a, s)	MOD_STR(MODINFO_ARGS, a, s)
+#define MOD_NAME(a, s, c)	MOD_STR(MODINFO_NAME, a, s, c)
+#define MOD_TYPE(a, s, c)	MOD_STR(MODINFO_TYPE, a, s, c)
+#define MOD_ARGS(a, s, c)	MOD_STR(MODINFO_ARGS, a, s, c)
 
-#define MOD_VAR(t, a, s) {			\
-    COPY32(t, a);				\
-    COPY32(sizeof(s), a);			\
-    i386_copyin(&s, a, sizeof(s));		\
-    a += roundup(sizeof(s), sizeof(u_long));	\
+#define MOD_VAR(t, a, s, c) {			\
+    COPY32(t, a, c);				\
+    COPY32(sizeof(s), a, c);			\
+    if (c)					\
+	i386_copyin(&s, a, sizeof(s));		\
+    a += roundup(sizeof(s), sizeof(u_int64_t));	\
 }
 
-#define MOD_ADDR(a, s)	MOD_VAR(MODINFO_ADDR, a, s)
-#define MOD_SIZE(a, s)	MOD_VAR(MODINFO_SIZE, a, s)
+#define MOD_ADDR(a, s, c)	MOD_VAR(MODINFO_ADDR, a, s, c)
+#define MOD_SIZE(a, s, c)	MOD_VAR(MODINFO_SIZE, a, s, c)
 
-#define MOD_METADATA(a, mm) {			\
-    COPY32(MODINFO_METADATA | mm->md_type, a);	\
-    COPY32(mm->md_size, a);			\
-    i386_copyin(mm->md_data, a, mm->md_size);	\
-    a += roundup(mm->md_size, sizeof(u_long));\
+#define MOD_METADATA(a, mm, c) {		\
+    COPY32(MODINFO_METADATA | mm->md_type, a, c); \
+    COPY32(mm->md_size, a, c);			\
+    if (c)					\
+	i386_copyin(mm->md_data, a, mm->md_size); \
+    a += roundup(mm->md_size, sizeof(u_int64_t));\
 }
 
-#define MOD_END(a) {				\
-    COPY32(MODINFO_END, a);			\
-    COPY32(0, a);				\
+#define MOD_END(a, c) {				\
+    COPY32(MODINFO_END, a, c);			\
+    COPY32(0, a, c);				\
 }
 
-vm_offset_t
-bi_copymodules(vm_offset_t addr)
+static vm_offset_t
+bi_copymodules64(vm_offset_t addr)
 {
     struct preloaded_file	*fp;
     struct file_metadata	*md;
+    int				c;
+    u_int64_t			v;
 
+    c = addr != 0;
     /* start with the first module on the list, should be the kernel */
     for (fp = file_findfile(NULL, NULL); fp != NULL; fp = fp->f_next) {
 
-	MOD_NAME(addr, fp->f_name);	/* this field must come first */
-	MOD_TYPE(addr, fp->f_type);
+	MOD_NAME(addr, fp->f_name, c);	/* this field must come first */
+	MOD_TYPE(addr, fp->f_type, c);
 	if (fp->f_args)
-	    MOD_ARGS(addr, fp->f_args);
-	MOD_ADDR(addr, fp->f_addr);
-	MOD_SIZE(addr, fp->f_size);
+	    MOD_ARGS(addr, fp->f_args, c);
+	v = fp->f_addr;
+	MOD_ADDR(addr, v, c);
+	v = fp->f_size;
+	MOD_SIZE(addr, v, c);
 	for (md = fp->f_metadata; md != NULL; md = md->md_next)
 	    if (!(md->md_type & MODINFOMD_NOCOPY))
-		MOD_METADATA(addr, md);
+		MOD_METADATA(addr, md, c);
     }
-    MOD_END(addr);
+    MOD_END(addr, c);
     return(addr);
 }
 
@@ -248,18 +132,21 @@ bi_copymodules(vm_offset_t addr)
  * - Module metadata are formatted and placed in kernel space.
  */
 int
-bi_load(char *args, int *howtop, int *bootdevp, vm_offset_t *bip)
+bi_load64(char *args, vm_offset_t *modulep, vm_offset_t *kernendp)
 {
-    struct preloaded_file	*xp;
+    struct preloaded_file	*xp, *kfp;
     struct i386_devdesc		*rootdev;
+    struct file_metadata	*md;
     vm_offset_t			addr;
+    u_int64_t			kernend;
+    u_int64_t			envp;
+    vm_offset_t			size;
     char			*rootdevname;
-    int				bootdevnr, i;
-    u_int			pad;
+    int				i, howto;
     char			*kernelname;
     const char			*kernelpath;
 
-    *howtop = bi_getboothowto(args);
+    howto = bi_getboothowto(args);
 
     /* 
      * Allow the environment variable 'rootdev' to override the supplied device 
@@ -276,49 +163,6 @@ bi_load(char *args, int *howtop, int *bootdevp, vm_offset_t *bip)
     /* Try reading the /etc/fstab file to select the root device */
     getrootmount(i386_fmtdev((void *)rootdev));
 
-    /* Do legacy rootdev guessing */
-
-    /* XXX - use a default bootdev of 0.  Is this ok??? */
-    bootdevnr = 0;
-
-    switch(rootdev->d_type) {
-    case DEVT_CD:
-	    /* Pass in BIOS device number. */
-	    bi.bi_bios_dev = bc_unit2bios(rootdev->d_kind.bioscd.unit);
-	    bootdevnr = bc_getdev(rootdev);
-	    break;
-
-    case DEVT_DISK:
-	/* pass in the BIOS device number of the current disk */
-	bi.bi_bios_dev = bd_unit2bios(rootdev->d_kind.biosdisk.unit);
-	bootdevnr = bd_getdev(rootdev);
-	break;
-
-    case DEVT_NET:
-	    break;
-	    
-    default:
-	printf("WARNING - don't know how to boot from device type %d\n", rootdev->d_type);
-    }
-    if (bootdevnr == -1) {
-	printf("root device %s invalid\n", i386_fmtdev(rootdev));
-	return (EINVAL);
-    }
-    free(rootdev);
-    *bootdevp = bootdevnr;
-
-    /* legacy bootinfo structure */
-    bi.bi_version = BOOTINFO_VERSION;
-    bi.bi_kernelname = 0;		/* XXX char * -> kernel name */
-    bi.bi_nfs_diskless = 0;		/* struct nfs_diskless * */
-    bi.bi_n_bios_used = 0;		/* XXX would have to hook biosdisk driver for these */
-    for (i = 0; i < N_BIOS_GEOM; i++)
-        bi.bi_bios_geom[i] = bd_getbigeom(i);
-    bi.bi_size = sizeof(bi);
-    bi.bi_memsizes_valid = 1;
-    bi.bi_basemem = bios_basemem / 1024;
-    bi.bi_extmem = bios_extmem / 1024;
-
     /* find the last module in the chain */
     addr = 0;
     for (xp = file_findfile(NULL, NULL); xp != NULL; xp = xp->f_next) {
@@ -326,38 +170,38 @@ bi_load(char *args, int *howtop, int *bootdevp, vm_offset_t *bip)
 	    addr = xp->f_addr + xp->f_size;
     }
     /* pad to a page boundary */
-    pad = (u_int)addr & PAGE_MASK;
-    if (pad != 0) {
-	pad = PAGE_SIZE - pad;
-	addr += pad;
-    }
+    addr = roundup(addr, PAGE_SIZE);
 
     /* copy our environment */
-    bi.bi_envp = addr;
+    envp = addr;
     addr = bi_copyenv(addr);
 
     /* pad to a page boundary */
-    pad = (u_int)addr & PAGE_MASK;
-    if (pad != 0) {
-	pad = PAGE_SIZE - pad;
-	addr += pad;
-    }
+    addr = roundup(addr, PAGE_SIZE);
+
+    kfp = file_findfile(NULL, "elf64 kernel");
+    if (kfp == NULL)
+      kfp = file_findfile(NULL, "elf32 kernel");
+    if (kfp == NULL)
+	panic("can't find kernel file");
+    kernend = 0;	/* fill it in later */
+    file_addmetadata(kfp, MODINFOMD_HOWTO, sizeof howto, &howto);
+    file_addmetadata(kfp, MODINFOMD_ENVP, sizeof envp, &envp);
+    file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof kernend, &kernend);
+    bios_addsmapdata(kfp);
+
+    /* Figure out the size and location of the metadata */
+    *modulep = addr;
+    size = bi_copymodules64(0);
+    kernend = roundup(addr + size, PAGE_SIZE);
+    *kernendp = kernend;
+
+    /* patch MODINFOMD_KERNEND */
+    md = file_findmetadata(kfp, MODINFOMD_KERNEND);
+    bcopy(&kernend, md->md_data, sizeof kernend);
+
     /* copy module list and metadata */
-    bi.bi_modulep = addr;
-    addr = bi_copymodules(addr);
-
-    /* all done copying stuff in, save end of loaded object space */
-    bi.bi_kernend = addr;
-
-    *howtop |= RB_BOOTINFO;		/* it's there now */
-
-    /*
-     * Get the kernel name, strip off any device prefix.
-     */
-    kernelname = getenv("kernelname");
-    i386_getdev(NULL, kernelname, &kernelpath);
-    bi.bi_kernelname = VTOP(kernelpath);
-    *bip = VTOP(&bi);
+    (void)bi_copymodules64(addr);
 
     return(0);
 }
diff --git a/sys/boot/i386/libi386/elf32_freebsd.c b/sys/boot/i386/libi386/elf32_freebsd.c
index 514183db144..3c9397b3a09 100644
--- a/sys/boot/i386/libi386/elf32_freebsd.c
+++ b/sys/boot/i386/libi386/elf32_freebsd.c
@@ -38,9 +38,9 @@
 #include "libi386.h"
 #include "btxv86.h"
 
-static int	elf_exec(struct preloaded_file *amp);
+static int	elf32_exec(struct preloaded_file *amp);
 
-struct file_format i386_elf = { elf_loadfile, elf_exec };
+struct file_format i386_elf = { elf32_loadfile, elf32_exec };
 
 /*
  * There is an a.out kernel and one or more a.out modules loaded.  
@@ -48,41 +48,28 @@ struct file_format i386_elf = { elf_loadfile, elf_exec };
  * preparations as are required, and do so.
  */
 static int
-elf_exec(struct preloaded_file *fp)
+elf32_exec(struct preloaded_file *fp)
 {
     struct file_metadata	*md;
     Elf_Ehdr 			*ehdr;
-    vm_offset_t			entry, bootinfop;
+    vm_offset_t			entry, bootinfop, modulep, kernend;
     int				boothowto, err, bootdev;
-    struct bootinfo		*bi;
-    vm_offset_t			ssym, esym;
 
     if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
 	return(EFTYPE);			/* XXX actually EFUCKUP */
     ehdr = (Elf_Ehdr *)&(md->md_data);
 
-    if ((err = bi_load(fp->f_args, &boothowto, &bootdev, &bootinfop)) != 0)
+    err = bi_load32(fp->f_args, &boothowto, &bootdev, &bootinfop, &modulep, &kernend);
+    if (err != 0)
 	return(err);
     entry = ehdr->e_entry & 0xffffff;
 
-    ssym = esym = 0;
-    if ((md = file_findmetadata(fp, MODINFOMD_SSYM)) != NULL)
-	ssym = *((vm_offset_t *)&(md->md_data));
-    if ((md = file_findmetadata(fp, MODINFOMD_ESYM)) != NULL)
-	esym = *((vm_offset_t *)&(md->md_data));
-    if (ssym == 0 || esym == 0)
-	ssym = esym = 0;		/* sanity */
-    bi = (struct bootinfo *)PTOV(bootinfop);
-    bi->bi_symtab = ssym;	/* XXX this is only the primary kernel symtab */
-    bi->bi_esymtab = esym;
-
-
 #ifdef DEBUG
     printf("Start @ 0x%lx ...\n", entry);
 #endif
 
     dev_cleanup();
-    __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop);
+    __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop, modulep, kernend);
 
     panic("exec returned");
 }
diff --git a/sys/boot/i386/libi386/elf64_freebsd.c b/sys/boot/i386/libi386/elf64_freebsd.c
index 514183db144..d1033f29c7d 100644
--- a/sys/boot/i386/libi386/elf64_freebsd.c
+++ b/sys/boot/i386/libi386/elf64_freebsd.c
@@ -26,6 +26,7 @@
  * $FreeBSD$
  */
 
+#define __ELF_WORD_SIZE 64
 #include <sys/param.h>
 #include <sys/exec.h>
 #include <sys/linker.h>
@@ -38,9 +39,26 @@
 #include "libi386.h"
 #include "btxv86.h"
 
-static int	elf_exec(struct preloaded_file *amp);
+static int	elf64_exec(struct preloaded_file *amp);
 
-struct file_format i386_elf = { elf_loadfile, elf_exec };
+struct file_format amd64_elf = { elf64_loadfile, elf64_exec };
+
+#define PG_V	0x001
+#define PG_RW	0x002
+#define PG_U	0x004
+#define PG_PS	0x080
+
+typedef u_int64_t p4_entry_t;
+typedef u_int64_t p3_entry_t;
+typedef u_int64_t p2_entry_t;
+extern p4_entry_t PT4[];
+extern p3_entry_t PT3[];
+extern p2_entry_t PT2[];
+
+u_int32_t entry_hi;
+u_int32_t entry_lo;
+
+extern amd64_tramp();
 
 /*
  * There is an a.out kernel and one or more a.out modules loaded.  
@@ -48,41 +66,52 @@ struct file_format i386_elf = { elf_loadfile, elf_exec };
  * preparations as are required, and do so.
  */
 static int
-elf_exec(struct preloaded_file *fp)
+elf64_exec(struct preloaded_file *fp)
 {
     struct file_metadata	*md;
     Elf_Ehdr 			*ehdr;
-    vm_offset_t			entry, bootinfop;
-    int				boothowto, err, bootdev;
-    struct bootinfo		*bi;
-    vm_offset_t			ssym, esym;
+    vm_offset_t			modulep, kernend;
+    int				err;
+    int				i;
 
     if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
 	return(EFTYPE);			/* XXX actually EFUCKUP */
     ehdr = (Elf_Ehdr *)&(md->md_data);
 
-    if ((err = bi_load(fp->f_args, &boothowto, &bootdev, &bootinfop)) != 0)
+    err = bi_load64(fp->f_args, &modulep, &kernend);
+    if (err != 0)
 	return(err);
-    entry = ehdr->e_entry & 0xffffff;
 
-    ssym = esym = 0;
-    if ((md = file_findmetadata(fp, MODINFOMD_SSYM)) != NULL)
-	ssym = *((vm_offset_t *)&(md->md_data));
-    if ((md = file_findmetadata(fp, MODINFOMD_ESYM)) != NULL)
-	esym = *((vm_offset_t *)&(md->md_data));
-    if (ssym == 0 || esym == 0)
-	ssym = esym = 0;		/* sanity */
-    bi = (struct bootinfo *)PTOV(bootinfop);
-    bi->bi_symtab = ssym;	/* XXX this is only the primary kernel symtab */
-    bi->bi_esymtab = esym;
+    bzero(PT4, PAGE_SIZE);
+    bzero(PT3, PAGE_SIZE);
+    bzero(PT2, PAGE_SIZE);
 
+    /* single PML4 entry */
+    PT4[0] = (p4_entry_t)VTOP((uintptr_t)&PT3[0]);
+    PT4[0] |= PG_V | PG_RW | PG_U;
 
+    /* Direct map 1GB at address zero */
+    PT3[0] = (p3_entry_t)VTOP((uintptr_t)&PT2[0]);
+    PT3[0] |= PG_V | PG_RW | PG_U;
+
+    /* Direct map 1GB at KERNBASE (hardcoded for now) */
+    PT3[1] = (p3_entry_t)VTOP((uintptr_t)&PT2[0]);
+    PT3[1] |= PG_V | PG_RW | PG_U;
+
+    /* 512 PG_PS (2MB) page mappings for 1GB of direct mapping */
+    for (i = 0; i < 512; i++) {
+	PT2[i] = i * (2 * 1024 * 1024);
+	PT2[i] |= PG_V | PG_RW | PG_PS | PG_U;
+    }
+
+    entry_lo = ehdr->e_entry & 0xffffffff;
+    entry_hi = (ehdr->e_entry >> 32) & 0xffffffff;
 #ifdef DEBUG
-    printf("Start @ 0x%lx ...\n", entry);
+    printf("Start @ %#llx ...\n", ehdr->e_entry);
 #endif
 
     dev_cleanup();
-    __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop);
+    __exec((void *)VTOP(amd64_tramp), modulep, kernend);
 
     panic("exec returned");
 }
diff --git a/sys/boot/i386/libi386/libi386.h b/sys/boot/i386/libi386/libi386.h
index cabe735b7bc..f2696e0a360 100644
--- a/sys/boot/i386/libi386/libi386.h
+++ b/sys/boot/i386/libi386/libi386.h
@@ -84,6 +84,10 @@ ssize_t	i386_copyin(const void *src, vm_offset_t dest, const size_t len);
 ssize_t	i386_copyout(const vm_offset_t src, void *dest, const size_t len);
 ssize_t	i386_readin(const int fd, vm_offset_t dest, const size_t len);
 
+struct preloaded_file;
+void	bios_addsmapdata(struct preloaded_file *);
+void	bios_getsmap(void);
+
 void	bios_getmem(void);
 extern u_int32_t	bios_basemem;				/* base memory in bytes */
 extern u_int32_t	bios_extmem;				/* extended memory in bytes */
@@ -97,6 +101,8 @@ int	i386_autoload(void);
 
 int	bi_getboothowto(char *kargs);
 vm_offset_t	bi_copyenv(vm_offset_t addr);
-int	bi_load(char *args, int *howtop, int *bootdevp, vm_offset_t *bip);
+int	bi_load32(char *args, int *howtop, int *bootdevp, vm_offset_t *bip,
+	    vm_offset_t *modulep, vm_offset_t *kernend);
+int	bi_load64(char *args, vm_offset_t *modulep, vm_offset_t *kernend);
 
 void	pxe_enable(void *pxeinfo);
diff --git a/sys/boot/i386/loader/conf.c b/sys/boot/i386/loader/conf.c
index 78b5d59b72a..17d8d7d43db 100644
--- a/sys/boot/i386/loader/conf.c
+++ b/sys/boot/i386/loader/conf.c
@@ -82,9 +82,11 @@ struct fs_ops *file_system[] = {
  * rather than reading the file go first.
  */
 extern struct file_format	i386_elf;
+extern struct file_format	amd64_elf;
 
 struct file_format *file_formats[] = {
     &i386_elf,
+    &amd64_elf,
     NULL
 };
 
diff --git a/sys/boot/i386/loader/main.c b/sys/boot/i386/loader/main.c
index f3021311185..ff2ee103480 100644
--- a/sys/boot/i386/loader/main.c
+++ b/sys/boot/i386/loader/main.c
@@ -144,6 +144,8 @@ main(void)
     extract_currdev();				/* set $currdev and $loaddev */
     setenv("LINES", "24", 1);			/* optional */
     
+    bios_getsmap();
+
     archsw.arch_autoload = i386_autoload;
     archsw.arch_getdev = i386_getdev;
     archsw.arch_copyin = i386_copyin;
diff --git a/sys/boot/ia64/common/exec.c b/sys/boot/ia64/common/exec.c
index 7df9950bbce..27d2b6e0856 100644
--- a/sys/boot/ia64/common/exec.c
+++ b/sys/boot/ia64/common/exec.c
@@ -94,9 +94,9 @@
 
 #define _KERNEL
 
-static int	elf_exec(struct preloaded_file *amp);
+static int	elf64_exec(struct preloaded_file *amp);
 
-struct file_format ia64_elf = { elf_loadfile, elf_exec };
+struct file_format ia64_elf = { elf64_loadfile, elf64_exec };
 
 static __inline u_int64_t
 disable_ic()
@@ -136,7 +136,7 @@ enter_kernel(u_int64_t start, struct bootinfo *bi)
 }
 
 static int
-elf_exec(struct preloaded_file *fp)
+elf64_exec(struct preloaded_file *fp)
 {
 	struct file_metadata	*md;
 	Elf_Ehdr		*hdr;
diff --git a/sys/boot/ia64/libski/elf_freebsd.c b/sys/boot/ia64/libski/elf_freebsd.c
index e72a52d5a7b..c6599a77a2b 100644
--- a/sys/boot/ia64/libski/elf_freebsd.c
+++ b/sys/boot/ia64/libski/elf_freebsd.c
@@ -91,9 +91,9 @@
 
 #define _KERNEL
 
-static int	elf_exec(struct preloaded_file *amp);
+static int	elf64_exec(struct preloaded_file *amp);
 
-struct file_format ia64_elf = { elf_loadfile, elf_exec };
+struct file_format ia64_elf = { elf64_loadfile, elf64_exec };
 
 #define PTE_MA_WB	0
 #define PTE_MA_UC	4
@@ -154,7 +154,7 @@ enter_kernel(const char* filename, u_int64_t start, struct bootinfo *bi)
 }
 
 static int
-elf_exec(struct preloaded_file *fp)
+elf64_exec(struct preloaded_file *fp)
 {
 	struct file_metadata	*md;
 	Elf_Ehdr		*hdr;
diff --git a/sys/boot/ia64/ski/elf_freebsd.c b/sys/boot/ia64/ski/elf_freebsd.c
index e72a52d5a7b..c6599a77a2b 100644
--- a/sys/boot/ia64/ski/elf_freebsd.c
+++ b/sys/boot/ia64/ski/elf_freebsd.c
@@ -91,9 +91,9 @@
 
 #define _KERNEL
 
-static int	elf_exec(struct preloaded_file *amp);
+static int	elf64_exec(struct preloaded_file *amp);
 
-struct file_format ia64_elf = { elf_loadfile, elf_exec };
+struct file_format ia64_elf = { elf64_loadfile, elf64_exec };
 
 #define PTE_MA_WB	0
 #define PTE_MA_UC	4
@@ -154,7 +154,7 @@ enter_kernel(const char* filename, u_int64_t start, struct bootinfo *bi)
 }
 
 static int
-elf_exec(struct preloaded_file *fp)
+elf64_exec(struct preloaded_file *fp)
 {
 	struct file_metadata	*md;
 	Elf_Ehdr		*hdr;
diff --git a/sys/boot/ofw/libofw/elf_freebsd.c b/sys/boot/ofw/libofw/elf_freebsd.c
index 95d4a908af6..7fa75860d80 100644
--- a/sys/boot/ofw/libofw/elf_freebsd.c
+++ b/sys/boot/ofw/libofw/elf_freebsd.c
@@ -42,13 +42,13 @@ extern char		end[];
 extern vm_offset_t	reloc;	/* From <arch>/conf.c */
 
 int
-ofw_elf_loadfile(char *filename, vm_offset_t dest,
+__elfN(ofw_loadfile)(char *filename, vm_offset_t dest,
     struct preloaded_file **result)
 {
 	int	r;
 	void	*addr;
 
-	r = elf_loadfile(filename, dest, result);
+	r = __elfN(loadfile)(filename, dest, result);
 	if (r != 0)
 		return (r);
 
@@ -56,7 +56,7 @@ ofw_elf_loadfile(char *filename, vm_offset_t dest,
 }
 
 int
-ofw_elf_exec(struct preloaded_file *fp)
+__elfN(ofw_exec)(struct preloaded_file *fp)
 {
 	struct file_metadata	*fmp;
 	vm_offset_t		mdp;
@@ -83,6 +83,6 @@ ofw_elf_exec(struct preloaded_file *fp)
 
 struct file_format	ofw_elf =
 {
-	ofw_elf_loadfile,
-	ofw_elf_exec
+	__elfN(ofw_loadfile),
+	__elfN(ofw_exec)
 };