1 files changed, 146 insertions, 0 deletions
diff --git a/StdLib/Include/X64/machine/asm.h b/StdLib/Include/X64/machine/asm.h
new file mode 100644
index 0000000000..109d1e1879
--- /dev/null
+++ b/StdLib/Include/X64/machine/asm.h
@@ -0,0 +1,146 @@
+/*	$NetBSD: asm.h,v 1.6 2006/09/05 19:00:42 ad Exp $	*/
+
+/*-
+ * 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. 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.
+ *
+ *	@(#)asm.h	5.5 (Berkeley) 5/7/91
+ */
+
+#ifndef _AMD64_ASM_H_
+#define _AMD64_ASM_H_
+
+#ifdef PIC
+#define PIC_PLT(x)	x@PLT
+#define PIC_GOT(x)	x@GOTPCREL(%rip)
+#else
+#define PIC_PLT(x)	x
+#define PIC_GOT(x)	x
+#endif
+
+# define _C_LABEL(x)	x
+#define	_ASM_LABEL(x)	x
+
+#define CVAROFF(x,y)		(_C_LABEL(x)+y)(%rip)
+
+#ifdef __STDC__
+# define __CONCAT(x,y)	x ## y
+# define __STRING(x)	#x
+#else
+# define __CONCAT(x,y)	x/**/y
+# define __STRING(x)	"x"
+#endif
+
+/* let kernels and others override entrypoint alignment */
+#ifndef _ALIGN_TEXT
+#define _ALIGN_TEXT .align 4
+#endif
+
+#define _ENTRY(x) \
+	.text; _ALIGN_TEXT; .globl x; .type x,@function; x:
+
+#ifdef _KERNEL
+/* XXX Can't use __CONCAT() here, as it would be evaluated incorrectly. */
+#ifdef __STDC__
+#define	IDTVEC(name) \
+	ALIGN_TEXT; .globl X ## name; .type X ## name,@function; X ## name:
+#else 
+#define	IDTVEC(name) \
+	ALIGN_TEXT; .globl X/**/name; .type X/**/name,@function; X/**/name:
+#endif /* __STDC__ */ 
+#endif /* _KERNEL */
+
+#ifdef __STDC__
+#define CPUVAR(off)	%gs:CPU_INFO_ ## off
+#else
+#define CPUVAR(off)     %gs:CPU_INFO_/**/off
+#endif
+
+
+#ifdef GPROF
+# define _PROF_PROLOGUE	\
+	pushq %rbp; leaq (%rsp),%rbp; call PIC_PLT(__mcount); popq %rbp
+#else
+# define _PROF_PROLOGUE
+#endif
+
+#define	ENTRY(y)	_ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
+#define	NENTRY(y)	_ENTRY(_C_LABEL(y))
+#define	ASENTRY(y)	_ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
+
+#define	ASMSTR		.asciz
+
+#define RCSID(x)	.text; .asciz x
+
+#define	WEAK_ALIAS(alias,sym)						\
+	.weak alias;							\
+	alias = sym
+
+/*
+ * STRONG_ALIAS: create a strong alias.
+ */
+#define STRONG_ALIAS(alias,sym)						\
+	.globl alias;							\
+	alias = sym
+
+/* XXXfvdl do not use stabs here */
+#ifdef __STDC__
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs msg ## ,30,0,0,0 ;					\
+	.stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0
+#else
+#define	WARN_REFERENCES(sym,msg)					\
+	.stabs msg,30,0,0,0 ;						\
+	.stabs __STRING(sym),1,0,0,0
+#endif /* __STDC__ */
+
+/*
+ * Assembley equivalent of spllower().  Label contains the label to jump to
+ * if we need to fire off pending interrupts (e.g. _C_LABEL(Xspllower)).
+ *
+ * On entry %rcx = new SPL.
+ */
+#define	SPLLOWER(label)						\
+	movq		CPUVAR(SELF), %r9 ;			\
+	cmpl		CPU_INFO_ILEVEL(%r9), %ecx ;		\
+	jae		99f ;					\
+	movl		CPU_INFO_IUNMASK(%r9,%rcx,4), %edi ;	\
+	pushfq		;					\
+	popq		%rax ;					\
+	cli		;					\
+	testl		CPU_INFO_IPENDING(%r9), %edi ;		\
+	movq		%rcx, %rdi ;				\
+	jnz		label ;					\
+	movl		%ecx, CPU_INFO_ILEVEL(%r9) ;		\
+	pushq		%rax ;					\
+	popfq		;					\
+99:
+
+#endif /* !_AMD64_ASM_H_ */