20 files changed, 1126 insertions, 12 deletions

diff --git a/lib/libc/amd64/SYS.h b/lib/libc/amd64/SYS.h
index dfb679f..53837ab 100644
--- a/lib/libc/amd64/SYS.h
+++ b/lib/libc/amd64/SYS.h
@@ -1,6 +1,6 @@
 /*-
- * Copyright (c) 1990, 1993
- *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
  *
  * This code is derived from software contributed to Berkeley by
  * William Jolitz.
@@ -33,18 +33,34 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	@(#)SYS.h	8.1 (Berkeley) 6/4/93
+ *	from: @(#)SYS.h	5.5 (Berkeley) 5/7/91
+ *
+ *	$Id: SYS.h,v 1.3 1993/11/04 00:01:17 paul Exp $
  */
 
 #include <sys/syscall.h>
+#include "DEFS.h"
 
-#ifdef PROF
-#define	ENTRY(x)	.globl _/**/x; \
-			.data; 1:; .long 0; .text; .align 2; _/**/x: \
-			movl $1b,%eax; call mcount
+#ifdef PIC
+#define PIC_PROLOGUE    \
+        pushl   %ebx;   \
+        call    1f;     \
+1:                      \
+        popl    %ebx;   \
+        addl    $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
+#define PIC_EPILOGUE    \
+        popl    %ebx
+#define PIC_PLT(x)      x@PLT
+#define PIC_GOT(x)      x@GOT(%ebx)
+#define PIC_GOTOFF(x)   x@GOTOFF(%ebx)
 #else
-#define	ENTRY(x)	.globl _/**/x; .text; .align 2; _/**/x: 
-#endif PROF
+#define PIC_PROLOGUE
+#define PIC_EPILOGUE
+#define PIC_PLT(x)      x
+#define PIC_GOT(x)      x
+#define PIC_GOTOFF(x)   x
+#endif
+
 #define	SYSCALL(x)	2: jmp cerror; ENTRY(x); lea SYS_/**/x,%eax; LCALL(7,0); jb 2b
 #define	RSYSCALL(x)	SYSCALL(x); ret
 #define	PSEUDO(x,y)	ENTRY(x); lea SYS_/**/y, %eax; ; LCALL(7,0); ret
diff --git a/lib/libc/amd64/gen/Makefile.inc b/lib/libc/amd64/gen/Makefile.inc
index 814013d..17556ea 100644
--- a/lib/libc/amd64/gen/Makefile.inc
+++ b/lib/libc/amd64/gen/Makefile.inc
@@ -1,5 +1,5 @@
 #	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
 
 SRCS+=	isinf.c
-SRCS+=	_setjmp.s alloca.s fabs.s ldexp.c modf.s setjmp.s
-SRCS+=	divsi3.s fixdfsi.s fixunsdfsi.s udivsi3.s
+SRCS+=	_setjmp.S alloca.S fabs.S ldexp.c modf.S setjmp.S
+SRCS+=	divsi3.S fixdfsi.S fixunsdfsi.S udivsi3.S
diff --git a/lib/libc/amd64/gen/_setjmp.S b/lib/libc/amd64/gen/_setjmp.S
new file mode 100644
index 0000000..7aa3e69
--- /dev/null
+++ b/lib/libc/amd64/gen/_setjmp.S
@@ -0,0 +1,82 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+	.asciz "@(#)_setjmp.s	5.1 (Berkeley) 4/23/90"
+	.align	2,0x90
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * C library -- _setjmp, _longjmp
+ *
+ *	_longjmp(a,v)
+ * will generate a "return(v)" from the last call to
+ *	_setjmp(a)
+ * by restoring registers from the environment 'a'.
+ * The previous signal state is NOT restored.
+ */
+
+#include "DEFS.h"
+
+ENTRY(_setjmp)
+	movl	4(%esp),%eax
+	movl	0(%esp),%edx
+	movl	%edx, 0(%eax)		/* rta */
+	movl	%ebx, 4(%eax)
+	movl	%esp, 8(%eax)
+	movl	%ebp,12(%eax)
+	movl	%esi,16(%eax)
+	movl	%edi,20(%eax)
+	fnstcw	28(%eax)
+	xorl	%eax,%eax
+	ret
+
+ENTRY(_longjmp)
+	movl	4(%esp),%edx
+	movl	8(%esp),%eax
+	movl	0(%edx),%ecx
+	movl	4(%edx),%ebx
+	movl	8(%edx),%esp
+	movl	12(%edx),%ebp
+	movl	16(%edx),%esi
+	movl	20(%edx),%edi
+	fninit
+	fldcw	28(%edx)
+	testl	%eax,%eax
+	jnz	1f
+	incl	%eax
+1:	movl	%ecx,0(%esp)
+	ret
diff --git a/lib/libc/amd64/gen/setjmp.S b/lib/libc/amd64/gen/setjmp.S
new file mode 100644
index 0000000..d9fc66e
--- /dev/null
+++ b/lib/libc/amd64/gen/setjmp.S
@@ -0,0 +1,91 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+	.asciz "@(#)setjmp.s	5.1 (Berkeley) 4/23/90"
+	.align	2,0x90
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * C library -- _setjmp, _longjmp
+ *
+ *	longjmp(a,v)
+ * will generate a "return(v)" from the last call to
+ *	setjmp(a)
+ * by restoring registers from the environment 'a'.
+ * The previous signal state is restored.
+ */
+
+#include "DEFS.h"
+#include "SYS.h"
+
+ENTRY(setjmp)
+	pushl	$0
+	call	PIC_PLT(_sigblock)
+	popl	%edx
+	movl	4(%esp),%ecx 
+	movl	0(%esp),%edx
+	movl	%edx, 0(%ecx)
+	movl	%ebx, 4(%ecx)
+	movl	%esp, 8(%ecx)
+	movl	%ebp,12(%ecx)
+	movl	%esi,16(%ecx)
+	movl	%edi,20(%ecx)
+	movl	%eax,24(%ecx)
+	fnstcw	28(%ecx)
+	xorl	%eax,%eax
+	ret
+
+ENTRY(longjmp)
+	movl	4(%esp),%edx
+	pushl	24(%edx)
+	call	PIC_PLT(_sigsetmask)	/* XXX this is not reentrant */
+	popl	%eax
+	movl	4(%esp),%edx
+	movl	8(%esp),%eax
+	movl	0(%edx),%ecx
+	movl	4(%edx),%ebx
+	movl	8(%edx),%esp
+	movl	12(%edx),%ebp
+	movl	16(%edx),%esi
+	movl	20(%edx),%edi
+	fninit
+	fldcw	28(%edx)
+	testl	%eax,%eax
+	jnz	1f
+	incl	%eax
+1:	movl	%ecx,0(%esp)
+	ret
diff --git a/lib/libc/amd64/gen/sigsetjmp.S b/lib/libc/amd64/gen/sigsetjmp.S
new file mode 100644
index 0000000..6c24386
--- /dev/null
+++ b/lib/libc/amd64/gen/sigsetjmp.S
@@ -0,0 +1,89 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *
+ *	from: @(#)setjmp.s	5.1 (Berkeley) 4/23/90"
+ *	$Id: sigsetjmp.S,v 1.1 1993/12/05 13:01:05 ats Exp $
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+	.text
+	.asciz "$Id: sigsetjmp.S,v 1.1 1993/12/05 13:01:05 ats Exp $"
+#endif /* LIBC_SCCS and not lint */
+
+#include "DEFS.h"
+#include "SYS.h"
+
+ENTRY(sigsetjmp)
+	movl	8(%esp),%eax
+	movl	4(%esp),%ecx 
+	movl	%eax,24(%ecx)
+	testl	%eax,%eax
+	jz	1f
+	pushl	$0
+	call	PIC_PLT(_sigblock)
+	addl	$4,%esp
+	movl	4(%esp),%ecx 
+	movl	%eax,28(%ecx)
+1:	movl	0(%esp),%edx
+	movl	%edx, 0(%ecx)
+	movl	%ebx, 4(%ecx)
+	movl	%esp, 8(%ecx)
+	movl	%ebp,12(%ecx)
+	movl	%esi,16(%ecx)
+	movl	%edi,20(%ecx)
+	xorl	%eax,%eax
+	ret
+
+ENTRY(siglongjmp)
+	movl	4(%esp),%edx
+	cmpl	$0,24(%edx)
+	jz	1f
+	pushl	28(%edx)
+	call	PIC_PLT(_sigsetmask)
+	addl	$4,%esp
+1:	movl	4(%esp),%edx
+	movl	8(%esp),%eax
+	movl	0(%edx),%ecx
+	movl	4(%edx),%ebx
+	movl	8(%edx),%esp
+	movl	12(%edx),%ebp
+	movl	16(%edx),%esi
+	movl	20(%edx),%edi
+	testl	%eax,%eax
+	jnz	2f
+	incl	%eax
+2:	movl	%ecx,0(%esp)
+	ret
diff --git a/lib/libc/amd64/net/Makefile.inc b/lib/libc/amd64/net/Makefile.inc
index 81a6c91..c848c82 100644
--- a/lib/libc/amd64/net/Makefile.inc
+++ b/lib/libc/amd64/net/Makefile.inc
@@ -1,3 +1,3 @@
 #	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
 
-SRCS+=	htonl.s htons.s ntohl.s ntohs.s
+SRCS+=	htonl.S htons.S ntohl.S ntohs.S
diff --git a/lib/libc/amd64/net/htonl.S b/lib/libc/amd64/net/htonl.S
new file mode 100644
index 0000000..a65e3f0
--- /dev/null
+++ b/lib/libc/amd64/net/htonl.S
@@ -0,0 +1,50 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+	.asciz "@(#)htonl.s	5.3 (Berkeley) 12/17/90"
+#endif /* LIBC_SCCS and not lint */
+
+/* netorder = htonl(hostorder) */
+
+#include "DEFS.h"
+
+ENTRY(htonl)
+	movl	4(%esp),%eax
+	xchgb	%al,%ah
+	roll	$16,%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/amd64/net/htons.S b/lib/libc/amd64/net/htons.S
new file mode 100644
index 0000000..6b3fbb0
--- /dev/null
+++ b/lib/libc/amd64/net/htons.S
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+	.asciz "@(#)htons.s	5.2 (Berkeley) 12/17/90"
+#endif /* LIBC_SCCS and not lint */
+
+/* netorder = htons(hostorder) */
+
+#include "DEFS.h"
+
+ENTRY(htons)
+	movzwl	4(%esp),%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/amd64/net/ntohl.S b/lib/libc/amd64/net/ntohl.S
new file mode 100644
index 0000000..5748f9e
--- /dev/null
+++ b/lib/libc/amd64/net/ntohl.S
@@ -0,0 +1,50 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+	.asciz "@(#)ntohl.s	5.2 (Berkeley) 12/17/90"
+#endif /* LIBC_SCCS and not lint */
+
+/* hostorder = ntohl(netorder) */
+
+#include "DEFS.h"
+
+ENTRY(ntohl)
+	movl	4(%esp),%eax
+	xchgb	%al,%ah
+	roll	$16,%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/amd64/net/ntohs.S b/lib/libc/amd64/net/ntohs.S
new file mode 100644
index 0000000..084c862
--- /dev/null
+++ b/lib/libc/amd64/net/ntohs.S
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+	.asciz "@(#)ntohs.s	5.2 (Berkeley) 12/17/90"
+#endif /* LIBC_SCCS and not lint */
+
+/* hostorder = ntohs(netorder) */
+
+#include "DEFS.h"
+
+ENTRY(ntohs)
+	movzwl	4(%esp),%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/amd64/sys/brk.S b/lib/libc/amd64/sys/brk.S
new file mode 100644
index 0000000..e884ac2
--- /dev/null
+++ b/lib/libc/amd64/sys/brk.S
@@ -0,0 +1,91 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	$Id: brk.S,v 1.3 1994/02/21 05:13:26 rgrimes Exp $
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	.asciz "@(#)brk.s	5.2 (Berkeley) 12/17/90"
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include "SYS.h"
+
+#define	SYS_brk		17
+
+	.globl	curbrk
+	.globl	minbrk
+ENTRY(_brk)
+	jmp	ok
+
+ENTRY(brk)
+#ifdef PIC
+	movl	4(%esp),%eax
+	PIC_PROLOGUE
+	movl	PIC_GOT(curbrk),%edx	# set up GOT addressing
+	movl	PIC_GOT(minbrk),%ecx	#
+	cmpl	%eax,(%ecx)
+	PIC_EPILOGUE
+	jl	ok
+	movl	(%ecx),%eax
+	movl	%eax,4(%esp)
+ok:
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	movl	4(%esp),%eax
+	movl	%eax,(%edx)
+	movl	$0,%eax
+	ret
+err:
+	jmp	PIC_PLT(cerror)
+
+#else
+
+	movl	4(%esp),%eax
+	cmpl	%eax,minbrk
+	jl	ok
+	movl	minbrk,%eax
+	movl	%eax,4(%esp)
+ok:
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	movl	4(%esp),%eax
+	movl	%eax,curbrk
+	movl	$0,%eax
+	ret
+err:
+	jmp	cerror
+#endif
diff --git a/lib/libc/amd64/sys/cerror.S b/lib/libc/amd64/sys/cerror.S
new file mode 100644
index 0000000..27fec0a
--- /dev/null
+++ b/lib/libc/amd64/sys/cerror.S
@@ -0,0 +1,56 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	$Id: cerror.S,v 1.2 1994/02/21 05:19:09 rgrimes Exp $
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	.asciz "@(#)cerror.s	5.1 (Berkeley) 4/23/90"
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include "SYS.h"
+
+	.globl	_errno
+cerror:
+#ifdef PIC
+	PIC_PROLOGUE
+	movl	PIC_GOT(_errno),%ecx
+	movl	%eax,(%ecx)
+	PIC_EPILOGUE
+#else
+	movl	%eax,_errno
+#endif
+	movl	$-1,%eax
+	ret
diff --git a/lib/libc/amd64/sys/exect.S b/lib/libc/amd64/sys/exect.S
new file mode 100644
index 0000000..1739760
--- /dev/null
+++ b/lib/libc/amd64/sys/exect.S
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	$Id: exect.S,v 1.2 1994/02/21 05:19:10 rgrimes Exp $
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	.asciz "@(#)exect.s	5.1 (Berkeley) 4/23/90"
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include "SYS.h"
+#include <machine/psl.h>
+
+ENTRY(exect)
+	lea	SYS_execve,%eax
+	pushf
+	popl	%edx
+	orl	$ PSL_T,%edx
+	pushl	%edx
+	popf
+	LCALL(7,0)
+	jmp	cerror		/* exect(file, argv, env); */
diff --git a/lib/libc/amd64/sys/pipe.S b/lib/libc/amd64/sys/pipe.S
new file mode 100644
index 0000000..2aeae58
--- /dev/null
+++ b/lib/libc/amd64/sys/pipe.S
@@ -0,0 +1,50 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	$Id: pipe.S,v 1.2 1994/02/21 05:19:13 rgrimes Exp $
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	.asciz "@(#)pipe.s	5.1 (Berkeley) 4/23/90"
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include "SYS.h"
+
+SYSCALL(pipe)
+	movl	4(%esp),%ecx
+	movl	%eax,(%ecx)
+	movl	%edx,4(%ecx)
+	movl	$0,%eax
+	ret
diff --git a/lib/libc/amd64/sys/ptrace.S b/lib/libc/amd64/sys/ptrace.S
new file mode 100644
index 0000000..6137098
--- /dev/null
+++ b/lib/libc/amd64/sys/ptrace.S
@@ -0,0 +1,60 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	$Id: ptrace.S,v 1.2 1994/02/21 05:19:14 rgrimes Exp $
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	.asciz "@(#)ptrace.s	5.1 (Berkeley) 4/23/90"
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include "SYS.h"
+
+ENTRY(ptrace)
+	xorl	%eax,%eax
+#ifdef PIC
+        PIC_PROLOGUE
+        movl    PIC_GOT(_errno),%edx
+        movl    %eax,(%edx)
+        PIC_EPILOGUE
+#else
+        movl    %eax,_errno
+#endif
+	lea	SYS_ptrace,%eax
+	LCALL(7,0)
+	jb	err
+	ret
+err:
+	jmp	cerror
diff --git a/lib/libc/amd64/sys/reboot.S b/lib/libc/amd64/sys/reboot.S
new file mode 100644
index 0000000..47e2f0a
--- /dev/null
+++ b/lib/libc/amd64/sys/reboot.S
@@ -0,0 +1,46 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	$Id: reboot.S,v 1.2 1994/02/21 05:19:15 rgrimes Exp $
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	.asciz "@(#)reboot.s	5.1 (Berkeley) 4/23/90"
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include "SYS.h"
+
+SYSCALL(reboot)
+	iret
diff --git a/lib/libc/amd64/sys/sbrk.S b/lib/libc/amd64/sys/sbrk.S
new file mode 100644
index 0000000..fef35cb
--- /dev/null
+++ b/lib/libc/amd64/sys/sbrk.S
@@ -0,0 +1,89 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	$Id: sbrk.S,v 1.2 1994/02/21 05:19:16 rgrimes Exp $
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	.asciz "@(#)sbrk.s	5.1 (Berkeley) 4/23/90"
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include "SYS.h"
+
+#define	SYS_brk		17
+
+	.globl	_end
+	.globl	minbrk
+	.globl	curbrk
+
+	.data
+minbrk:	.long	_end
+curbrk:	.long	_end
+	.text
+
+ENTRY(sbrk)
+#ifdef PIC
+	movl	4(%esp),%ecx
+	PIC_PROLOGUE
+	movl	PIC_GOT(curbrk),%edx
+	movl	(%edx),%eax
+	PIC_EPILOGUE
+	addl	%eax,4(%esp)
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	PIC_PROLOGUE
+	movl	PIC_GOT(curbrk),%edx
+	movl	(%edx),%eax
+	addl	%ecx,(%edx)
+	PIC_EPILOGUE
+	ret
+err:
+	jmp	PIC_PLT(cerror)
+
+#else
+
+	movl	4(%esp),%ecx
+	movl	curbrk,%eax
+	addl	%eax,4(%esp)
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	movl	curbrk,%eax
+	addl	%ecx,curbrk
+	ret
+err:
+	jmp	cerror
+#endif
diff --git a/lib/libc/amd64/sys/setlogin.S b/lib/libc/amd64/sys/setlogin.S
new file mode 100644
index 0000000..92d761a
--- /dev/null
+++ b/lib/libc/amd64/sys/setlogin.S
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	$Id: setlogin.S,v 1.2 1994/02/21 05:19:17 rgrimes Exp $
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+	.asciz "@(#)setlogin.s	5.2 (Berkeley) 4/12/91"
+#endif /* LIBC_SCCS and not lint */
+
+#include "SYS.h"
+
+.globl	__logname_valid		/* in getlogin() */
+
+SYSCALL(setlogin)
+#ifdef PIC
+	PIC_PROLOGUE
+	pushl	%eax
+	movl	PIC_GOT(__logname_valid),%eax
+	movl	$0,(%eax)
+	popl	%eax
+	PIC_EPILOGUE
+#else
+	movl	$0,__logname_valid
+#endif
+	ret				/* setlogin(name) */
diff --git a/lib/libc/amd64/sys/sigreturn.S b/lib/libc/amd64/sys/sigreturn.S
new file mode 100644
index 0000000..b98c950
--- /dev/null
+++ b/lib/libc/amd64/sys/sigreturn.S
@@ -0,0 +1,56 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	$Id: sigreturn.S,v 1.2 1994/02/21 05:19:21 rgrimes Exp $
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	.asciz "@(#)sigreturn.s	5.2 (Berkeley) 12/17/90"
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include "SYS.h"
+
+/*
+ * We must preserve the state of the registers as the user has set them up.
+ */
+#ifdef PROF
+#undef ENTRY
+#define	ENTRY(x) \
+	.globl _/**/x; .align 2; _/**/x:  pusha ; \
+	.data; 1:; .long 0; .text; movl $1b,%eax; call mcount; popa ; nop
+#endif /* PROF */
+
+SYSCALL(sigreturn)
+	ret
diff --git a/lib/libc/amd64/sys/vfork.S b/lib/libc/amd64/sys/vfork.S
new file mode 100644
index 0000000..181dae5
--- /dev/null
+++ b/lib/libc/amd64/sys/vfork.S
@@ -0,0 +1,80 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	$Id: Ovfork.S,v 1.3 1994/02/21 05:19:08 rgrimes Exp $
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	.asciz "@(#)Ovfork.s	5.1 (Berkeley) 4/23/90"
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include "SYS.h"
+
+/*
+ * pid = vfork();
+ *
+ * %edx == 0 in parent process, %edx == 1 in child process.
+ * %eax == pid of child in parent, %eax == pid of parent in child.
+ *
+ */
+	.set	vfork,66
+.globl	_vfork
+.type	_vfork,@function
+
+_vfork:
+	popl	%ecx		/* my rta into ecx */
+	movl	$vfork, %eax
+	LCALL(7,0)
+	jb	verror
+vforkok:
+	cmpl	$0,%edx		/* child process? */
+	jne	child		/* yes */
+	jmp 	parent 
+.globl	_errno
+verror:
+#ifdef PIC
+	PIC_PROLOGUE
+	movl	PIC_GOT(_errno), %edx
+	movl	%eax,(%edx)
+	PIC_EPILOGUE
+#else
+	movl	%eax,_errno
+#endif
+	movl	$-1,%eax
+	jmp	%ecx
+child:
+	movl	$0,%eax
+parent:
+	jmp	%ecx