X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/4d15aeb193b2c68f1d38666c317f8d3734f5f083..5ba3f43ea354af8ad55bea84372a2bc834d8757c:/osfmk/arm64/asm.h

diff --git a/osfmk/arm64/asm.h b/osfmk/arm64/asm.h
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+/*
+ * Copyright (c) 2007 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+/*
+ * @OSF_COPYRIGHT@
+ */
+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+
+#ifndef	_ARM_ASM_H_
+#define	_ARM_ASM_H_
+
+#include <arm/arch.h>
+
+#ifndef __arm64__
+#error Why are we  including this?
+#endif 
+
+/* There is another definition of ALIGN for .c sources */
+#ifdef __ASSEMBLER__
+#define ALIGN 2
+#endif /* ASSEMBLER */
+
+#ifndef FALIGN
+#define FALIGN ALIGN
+#endif
+
+#define LB(x,n) n
+#if	__STDC__
+#ifndef __NO_UNDERSCORES__
+#define	LCL(x)	L ## x
+#define EXT(x) _ ## x
+#define LEXT(x) _ ## x ## :
+#else
+#define	LCL(x)	.L ## x
+#define EXT(x) x
+#define LEXT(x) x ## :
+#endif
+#define LBc(x,n) n ## :
+#define LBb(x,n) n ## b
+#define LBf(x,n) n ## f
+#else /* __STDC__ */
+#ifndef __NO_UNDERSCORES__
+#define LCL(x) L/**/x
+#define EXT(x) _/**/x
+#define LEXT(x) _/**/x/**/:
+#else /* __NO_UNDERSCORES__ */
+#define	LCL(x)	.L/**/x
+#define EXT(x) x
+#define LEXT(x) x/**/:
+#endif /* __NO_UNDERSCORES__ */
+#define LBc(x,n) n/**/:
+#define LBb(x,n) n/**/b
+#define LBf(x,n) n/**/f
+#endif /* __STDC__ */
+
+#define String	.asciz
+#define Value	.word
+#define Times(a,b) (a*b)
+#define Divide(a,b) (a/b)
+
+#ifdef __ASSEMBLER__
+#if	MACH_KDB
+#include <ddb/stab.h>
+/*
+ * This pseudo-assembler line is added so that there will be at least
+ *	one N_SO entry in the symbol stable to define the current file name.
+ */
+#endif	/* MACH_KDB */
+
+/*
+ * Multiline macros must use .macro syntax for now,
+ * as there is no ARM64 statement separator.
+ */
+.macro ENTRY 
+	.align FALIGN
+	.globl _$0 
+	_$0 : 
+.endmacro
+
+.macro ENTRY2
+	.align FALIGN
+	.globl _$0 
+	.globl _$1 
+	_$0 :
+	_$1 :
+.endmacro
+
+.macro READ_THREAD
+	mrs $0, TPIDR_EL1
+.endmacro
+
+.macro BRANCH_EXTERN
+	b _$0 
+.endmacro
+
+.macro CALL_EXTERN
+	bl _$0 
+.endmacro
+
+.macro MOV64
+	movk $0, #((($1) >> 48) & 0x000000000000FFFF), lsl #48
+	movk $0, #((($1) >> 32) & 0x000000000000FFFF), lsl #32
+	movk $0, #((($1) >> 16) & 0x000000000000FFFF), lsl #16
+	movk $0, #((($1) >> 00) & 0x000000000000FFFF), lsl #00
+.endmacro
+
+#define PUSH_FRAME			\
+	stp fp, lr, [sp, #-16]!		%% \
+	mov fp, sp			%%
+
+#define POP_FRAME			\
+	mov sp, fp			%% \
+	ldp fp, lr, [sp], #16		%%
+
+#define EXT(x) _ ## x
+
+#ifdef  XNU_KERNEL_PRIVATE
+.macro PANIC_UNIMPLEMENTED
+	bl _panic_unimplemented
+.endmacro
+#endif
+
+#else /* NOT __ASSEMBLER__ */
+
+/* These defines are here for .c files that wish to reference global symbols
+ * within __asm__ statements. 
+ */
+#ifndef __NO_UNDERSCORES__
+#define CC_SYM_PREFIX "_"
+#else
+#define CC_SYM_PREFIX ""
+#endif /* __NO_UNDERSCORES__ */
+#endif /* __ASSEMBLER__ */
+
+#ifdef __ASSEMBLER__
+
+# define BRANCH_EXTERN(x)	b	EXT(x)
+
+#endif /* __ASSEMBLER__ */
+
+#endif /* _ARM_ASM_H_ */