[apple/xnu.git] / osfmk / i386 / asm.h

/*
 * Copyright (c) 2000 Apple Computer, 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	_I386_ASM_H_
#define	_I386_ASM_H_

#ifdef _KERNEL
#include <gprof.h>
#endif	/* _KERNEL */

#ifdef MACH_KERNEL
#include <mach_kdb.h>
#else	/* !MACH_KERNEL */
#define	MACH_KDB 0
#endif	/* !MACH_KERNEL */


#if	defined(MACH_KERNEL) || defined(_KERNEL)
#include <gprof.h>
#endif	/* MACH_KERNEL || _KERNEL */


#define S_PC	 0(%esp)
#define S_ARG0	 4(%esp)
#define S_ARG1	 8(%esp)
#define S_ARG2	12(%esp)
#define S_ARG3	16(%esp)
#define S_ARG4	20(%esp)

#define FRAME	pushl %ebp; movl %esp, %ebp
#define EMARF	leave

#define B_LINK	 0(%ebp)
#define B_PC	 4(%ebp)
#define B_ARG0	 8(%ebp)
#define B_ARG1	12(%ebp)
#define B_ARG2	16(%ebp)
#define B_ARG3	20(%ebp)

/* There is another definition of ALIGN for .c sources */
#ifdef ASSEMBLER
#define ALIGN 4,0x90
#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 SVC .byte 0x9a; .long 0; .word 0x7

#define RPC_SVC .byte 0x9a; .long 0; .word 0xf

#define String	.asciz
#define Value	.word
#define Times(a,b) (a*b)
#define Divide(a,b) (a/b)

#define INB	inb	%dx, %al
#define OUTB	outb	%al, %dx
#define INL	inl	%dx, %eax
#define OUTL	outl	%eax, %dx

#define data16	.byte 0x66
#define addr16	.byte 0x67

#if !GPROF
#define MCOUNT

#elif defined(__SHARED__)
#define MCOUNT		; .data;\
			.align ALIGN;\
			LBc(x, 8) .long 0;\
			.text;\
			Gpush;\
			Gload;\
			leal Gotoff(LBb(x,8)),%edx;\
			Egaddr(%eax,_mcount_ptr);\
			Gpop;\
			call *(%eax);

#else	/* !GPROF, !__SHARED__ */
#define MCOUNT		; call mcount;
#endif /* GPROF */

#ifdef __ELF__
#define ELF_FUNC(x)	.type x,@function
#define ELF_DATA(x)	.type x,@object
#define ELF_SIZE(x,s)	.size x,s
#else
#define ELF_FUNC(x)
#define ELF_DATA(x)
#define ELF_SIZE(x,s)
#endif

#define	Entry(x)	.globl EXT(x); ELF_FUNC(EXT(x)); .align FALIGN; LEXT(x)
#define	ENTRY(x)	Entry(x) MCOUNT
#define	ENTRY2(x,y)	.globl EXT(x); .globl EXT(y); \
			ELF_FUNC(EXT(x)); ELF_FUNC(EXT(y)); \
			.align FALIGN; LEXT(x); LEXT(y) \
			MCOUNT
#if __STDC__
#define	ASENTRY(x) 	.globl x; .align FALIGN; x ## : ELF_FUNC(x) MCOUNT
#else
#define	ASENTRY(x) 	.globl x; .align FALIGN; x: ELF_FUNC(x) MCOUNT
#endif /* __STDC__ */

#define	DATA(x)		.globl EXT(x); ELF_DATA(EXT(x)); .align ALIGN; LEXT(x)

#define End(x)		ELF_SIZE(x,.-x)
#define END(x)		End(EXT(x))
#define ENDDATA(x)	END(x)
#define Enddata(x)	End(x)

/*
 * ELF shared library accessor macros.
 * Gpush saves the %ebx register used for the GOT address
 * Gpop pops %ebx if we need a GOT
 * Gload loads %ebx with the GOT address if shared libraries are used
 * Gcall calls an external function.
 * Gotoff allows you to reference local labels.
 * Gotoff2 allows you to reference local labels with an index reg.
 * Gotoff3 allows you to reference local labels with an index reg & size.
 * Gaddr loads up a register with an address of an external item.
 * Gstack is the number of bytes that Gpush pushes on the stack.
 *
 * Varients of the above with E or L prefixes do EXT(name) or LCL(name)
 * respectively.
 */

#ifndef __SHARED__
#define Gpush
#define Gpop
#define Gload
#define Gcall(func)		call func
#define Gotoff(lab)		lab
#define Gotoff2(l,r)		l(r)
#define Gotoff3(l,r,s)		l(,r,s)
#define Gaddr(to,lab)		movl $lab,to
#define Gcmp(lab,reg)		cmpl $lab,reg
#define Gmemload(lab,reg)	movl lab,reg
#define Gmemstore(reg,lab,tmp)	movl reg,lab
#define Gstack			0

#else
#ifdef __ELF__			/* ELF shared libraries */
#define Gpush			pushl %ebx
#define Gpop			popl %ebx
#define Gload			call 9f; 9: popl %ebx; addl $_GLOBAL_OFFSET_TABLE_+[.-9b],%ebx
#define Gcall(func)		call EXT(func)@PLT
#define Gotoff(lab)		lab@GOTOFF(%ebx)
#define Gotoff2(l,r)		l@GOTOFF(%ebx,r)
#define Gotoff3(l,r,s)		l@GOTOFF(%ebx,r,s)
#define Gaddr(to,lab)		movl lab@GOT(%ebx),to
#define Gcmp(lab,reg)		cmpl reg,lab@GOT(%ebx)
#define Gmemload(lab,reg)	movl lab@GOT(%ebx),reg; movl (reg),reg
#define Gmemstore(reg,lab,tmp)	movl lab@GOT(%ebx),tmp; movl reg,(tmp)
#define Gstack			4

#else				/* ROSE shared libraries */
#define Gpush
#define Gpop
#define Gload
#define Gcall(func)		call *9f; .data; .align ALIGN; 9: .long func; .text
#define Gotoff(lab)		lab
#define Gotoff2(l,r)		l(r)
#define Gotoff3(l,r,s)		l(,r,s)
#define Gaddr(to,lab)		movl 9f,to; .data; .align ALIGN; 9: .long lab; .text
#define Gcmp(lab,reg)		cmpl reg,9f; .data; .align ALIGN; 9: .long lab; .text
#define Gmemload(lab,reg)	movl 9f,reg; movl (reg),reg; .data; .align ALIGN; 9: .long lab; .text
#define Gmemstore(reg,lab,tmp)	movl 9f,tmp; movl reg,(tmp); .data; .align ALIGN; 9: .long lab; .text
#define Gstack			0
#endif	/* __ELF__ */
#endif	/* __SHARED__ */

/* Egotoff is not provided, since external symbols should not use @GOTOFF
   relocations.  */
#define Egcall(func)		Gcall(EXT(func))
#define Egaddr(to,lab)		Gaddr(to,EXT(lab))
#define Egcmp(lab,reg)		Gcmp(EXT(lab),reg)
#define Egmemload(lab,reg)	Gmemload(EXT(lab),reg)
#define Egmemstore(reg,lab,tmp)	Gmemstore(reg,EXT(lab),tmp)

#define Lgotoff(lab)		Gotoff(LCL(lab))
#define Lgotoff2(l,r)		Gotoff2(LCL(l),r)
#define Lgotoff3(l,r,s)		Gotoff3(LCL(l),r,s)
#define Lgcmp(lab,reg)		Gcmp(LCL(lab),reg)
#define Lgmemload(lab,reg)	movl Lgotoff(lab),reg
#define Lgmemstore(reg,lab,tmp)	movl reg,Lgotoff(lab)

#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 */

#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 */

#endif /* _I386_ASM_H_ */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
8f6c56a5	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
8f6c56a5 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
8ad349bb	24	* limitations under the License.
8f6c56a5 A	25	*
8f6c56a5 A	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* @OSF_COPYRIGHT@
	30	*/
	31	/*
	32	* Mach Operating System
	33	* Copyright (c) 1991,1990,1989 Carnegie Mellon University
	34	* All Rights Reserved.
	35	*
	36	* Permission to use, copy, modify and distribute this software and its
	37	* documentation is hereby granted, provided that both the copyright
	38	* notice and this permission notice appear in all copies of the
	39	* software, derivative works or modified versions, and any portions
	40	* thereof, and that both notices appear in supporting documentation.
	41	*
	42	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	43	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	44	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	45	*
	46	* Carnegie Mellon requests users of this software to return to
	47	*
	48	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	49	* School of Computer Science
	50	* Carnegie Mellon University
	51	* Pittsburgh PA 15213-3890
	52	*
	53	* any improvements or extensions that they make and grant Carnegie Mellon
	54	* the rights to redistribute these changes.
	55	*/
	56
	57	#ifndef _I386_ASM_H_
	58	#define _I386_ASM_H_
	59
	60	#ifdef _KERNEL
	61	#include <gprof.h>
	62	#endif /* _KERNEL */
	63
	64	#ifdef MACH_KERNEL
	65	#include <mach_kdb.h>
	66	#else /* !MACH_KERNEL */
	67	#define MACH_KDB 0
	68	#endif /* !MACH_KERNEL */
	69
	70
	71	#if defined(MACH_KERNEL) \|\| defined(_KERNEL)
	72	#include <gprof.h>
	73	#endif /* MACH_KERNEL \|\| _KERNEL */
	74
	75
91447636	76	#define S_PC 0(%esp)
1c79356b A	77	#define S_ARG0 4(%esp)
	78	#define S_ARG1 8(%esp)
	79	#define S_ARG2 12(%esp)
	80	#define S_ARG3 16(%esp)
4452a7af	81	#define S_ARG4 20(%esp)
1c79356b A	82
	83	#define FRAME pushl %ebp; movl %esp, %ebp
	84	#define EMARF leave
	85
91447636 A	86	#define B_LINK 0(%ebp)
91447636 A	87	#define B_PC 4(%ebp)
1c79356b A	88	#define B_ARG0 8(%ebp)
	89	#define B_ARG1 12(%ebp)
	90	#define B_ARG2 16(%ebp)
	91	#define B_ARG3 20(%ebp)
	92
	93	/* There is another definition of ALIGN for .c sources */
	94	#ifdef ASSEMBLER
4452a7af	95	#define ALIGN 4,0x90
1c79356b A	96	#endif /* ASSEMBLER */
	97
	98	#ifndef FALIGN
	99	#define FALIGN ALIGN
	100	#endif
	101
	102	#define LB(x,n) n
	103	#if __STDC__
	104	#ifndef __NO_UNDERSCORES__
	105	#define LCL(x) L ## x
	106	#define EXT(x) _ ## x
	107	#define LEXT(x) _ ## x ## :
	108	#else
	109	#define LCL(x) .L ## x
	110	#define EXT(x) x
	111	#define LEXT(x) x ## :
	112	#endif
	113	#define LBc(x,n) n ## :
	114	#define LBb(x,n) n ## b
	115	#define LBf(x,n) n ## f
	116	#else /* __STDC__ */
	117	#ifndef __NO_UNDERSCORES__
	118	#define LCL(x) L/**/x
	119	#define EXT(x) _/**/x
	120	#define LEXT(x) _//x//:
	121	#else /* __NO_UNDERSCORES__ */
	122	#define LCL(x) .L/**/x
	123	#define EXT(x) x
	124	#define LEXT(x) x/**/:
	125	#endif /* __NO_UNDERSCORES__ */
	126	#define LBc(x,n) n/**/:
	127	#define LBb(x,n) n/**/b
	128	#define LBf(x,n) n/**/f
	129	#endif /* __STDC__ */
	130
	131	#define SVC .byte 0x9a; .long 0; .word 0x7
	132
	133	#define RPC_SVC .byte 0x9a; .long 0; .word 0xf
	134
	135	#define String .asciz
	136	#define Value .word
	137	#define Times(a,b) (a*b)
	138	#define Divide(a,b) (a/b)
	139
	140	#define INB inb %dx, %al
	141	#define OUTB outb %al, %dx
	142	#define INL inl %dx, %eax
	143	#define OUTL outl %eax, %dx
	144
	145	#define data16 .byte 0x66
	146	#define addr16 .byte 0x67
	147
	148	#if !GPROF
	149	#define MCOUNT
	150
	151	#elif defined(__SHARED__)
	152	#define MCOUNT ; .data;\
	153	.align ALIGN;\
	154	LBc(x, 8) .long 0;\
	155	.text;\
	156	Gpush;\
	157	Gload;\
	158	leal Gotoff(LBb(x,8)),%edx;\
	159	Egaddr(%eax,_mcount_ptr);\
160	Gpop;\
161	call *(%eax);
162
163	#else /* !GPROF, !__SHARED__ */
91447636	164	#define MCOUNT ; call mcount;
1c79356b A	165	#endif /* GPROF */
	166
	167	#ifdef __ELF__
	168	#define ELF_FUNC(x) .type x,@function
	169	#define ELF_DATA(x) .type x,@object
	170	#define ELF_SIZE(x,s) .size x,s
	171	#else
	172	#define ELF_FUNC(x)
	173	#define ELF_DATA(x)
	174	#define ELF_SIZE(x,s)
	175	#endif
	176
	177	#define Entry(x) .globl EXT(x); ELF_FUNC(EXT(x)); .align FALIGN; LEXT(x)
	178	#define ENTRY(x) Entry(x) MCOUNT
	179	#define ENTRY2(x,y) .globl EXT(x); .globl EXT(y); \
	180	ELF_FUNC(EXT(x)); ELF_FUNC(EXT(y)); \
	181	.align FALIGN; LEXT(x); LEXT(y) \
	182	MCOUNT
	183	#if __STDC__
	184	#define ASENTRY(x) .globl x; .align FALIGN; x ## : ELF_FUNC(x) MCOUNT
	185	#else
	186	#define ASENTRY(x) .globl x; .align FALIGN; x: ELF_FUNC(x) MCOUNT
	187	#endif /* __STDC__ */
	188
	189	#define DATA(x) .globl EXT(x); ELF_DATA(EXT(x)); .align ALIGN; LEXT(x)
	190
	191	#define End(x) ELF_SIZE(x,.-x)
	192	#define END(x) End(EXT(x))
	193	#define ENDDATA(x) END(x)
	194	#define Enddata(x) End(x)
	195
	196	/*
	197	* ELF shared library accessor macros.
	198	* Gpush saves the %ebx register used for the GOT address
	199	* Gpop pops %ebx if we need a GOT
	200	* Gload loads %ebx with the GOT address if shared libraries are used
	201	* Gcall calls an external function.
	202	* Gotoff allows you to reference local labels.
	203	* Gotoff2 allows you to reference local labels with an index reg.
	204	* Gotoff3 allows you to reference local labels with an index reg & size.
	205	* Gaddr loads up a register with an address of an external item.
	206	* Gstack is the number of bytes that Gpush pushes on the stack.
	207	*
	208	* Varients of the above with E or L prefixes do EXT(name) or LCL(name)
	209	* respectively.
	210	*/
	211
	212	#ifndef __SHARED__
	213	#define Gpush
	214	#define Gpop
	215	#define Gload
	216	#define Gcall(func) call func
	217	#define Gotoff(lab) lab
	218	#define Gotoff2(l,r) l(r)
	219	#define Gotoff3(l,r,s) l(,r,s)
	220	#define Gaddr(to,lab) movl $lab,to
	221	#define Gcmp(lab,reg) cmpl $lab,reg
	222	#define Gmemload(lab,reg) movl lab,reg
	223	#define Gmemstore(reg,lab,tmp) movl reg,lab
	224	#define Gstack 0
	225
	226	#else
	227	#ifdef __ELF__ /* ELF shared libraries */
	228	#define Gpush pushl %ebx
229	#define Gpop popl %ebx
230	#define Gload call 9f; 9: popl %ebx; addl $_GLOBAL_OFFSET_TABLE_+[.-9b],%ebx
231	#define Gcall(func) call EXT(func)@PLT
232	#define Gotoff(lab) lab@GOTOFF(%ebx)
233	#define Gotoff2(l,r) l@GOTOFF(%ebx,r)
234	#define Gotoff3(l,r,s) l@GOTOFF(%ebx,r,s)
235	#define Gaddr(to,lab) movl lab@GOT(%ebx),to
236	#define Gcmp(lab,reg) cmpl reg,lab@GOT(%ebx)
237	#define Gmemload(lab,reg) movl lab@GOT(%ebx),reg; movl (reg),reg
238	#define Gmemstore(reg,lab,tmp) movl lab@GOT(%ebx),tmp; movl reg,(tmp)
239	#define Gstack 4
240
241	#else /* ROSE shared libraries */
242	#define Gpush
243	#define Gpop
244	#define Gload
245	#define Gcall(func) call *9f; .data; .align ALIGN; 9: .long func; .text
246	#define Gotoff(lab) lab
247	#define Gotoff2(l,r) l(r)
248	#define Gotoff3(l,r,s) l(,r,s)
249	#define Gaddr(to,lab) movl 9f,to; .data; .align ALIGN; 9: .long lab; .text
250	#define Gcmp(lab,reg) cmpl reg,9f; .data; .align ALIGN; 9: .long lab; .text
251	#define Gmemload(lab,reg) movl 9f,reg; movl (reg),reg; .data; .align ALIGN; 9: .long lab; .text
252	#define Gmemstore(reg,lab,tmp) movl 9f,tmp; movl reg,(tmp); .data; .align ALIGN; 9: .long lab; .text
253	#define Gstack 0
254	#endif /* __ELF__ */
255	#endif /* __SHARED__ */
256
257	/* Egotoff is not provided, since external symbols should not use @GOTOFF
258	relocations. */
259	#define Egcall(func) Gcall(EXT(func))
260	#define Egaddr(to,lab) Gaddr(to,EXT(lab))
261	#define Egcmp(lab,reg) Gcmp(EXT(lab),reg)
262	#define Egmemload(lab,reg) Gmemload(EXT(lab),reg)
263	#define Egmemstore(reg,lab,tmp) Gmemstore(reg,EXT(lab),tmp)
264
265	#define Lgotoff(lab) Gotoff(LCL(lab))
266	#define Lgotoff2(l,r) Gotoff2(LCL(l),r)
267	#define Lgotoff3(l,r,s) Gotoff3(LCL(l),r,s)
268	#define Lgcmp(lab,reg) Gcmp(LCL(lab),reg)
269	#define Lgmemload(lab,reg) movl Lgotoff(lab),reg
270	#define Lgmemstore(reg,lab,tmp) movl reg,Lgotoff(lab)
271
272	#ifdef ASSEMBLER
273	#if MACH_KDB
274	#include <ddb/stab.h>
275	/*
276	* This pseudo-assembler line is added so that there will be at least
277	* one N_SO entry in the symbol stable to define the current file name.
278	*/
279	#endif /* MACH_KDB */
280
281	#else /* NOT ASSEMBLER */
282
283	/* These defines are here for .c files that wish to reference global symbols
284	* within __asm__ statements.
285	*/
286	#ifndef __NO_UNDERSCORES__
287	#define CC_SYM_PREFIX "_"
288	#else
289	#define CC_SYM_PREFIX ""
290	#endif /* __NO_UNDERSCORES__ */
291	#endif /* ASSEMBLER */
292
293	#endif /* _I386_ASM_H_ */