[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 */

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

#if defined(__i386__)

#define S_PC	 (%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	 (%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)

#elif defined(__x86_64__)

#define S_PC	 (%rsp)

#define FRAME	pushq %rbp; movq %rsp, %rbp
#define EMARF	leave

#define B_LINK	 (%rbp)
#define B_PC	 8(%rbp)

#else
#error unsupported architecture
#endif

/* 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)

#ifndef 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 */

/*
 * The following macros make calls into C code.
 * They dynamically align the stack to 16 bytes.
 */
#if defined(__i386__)
/*
 * Arguments are moved (not pushed) onto the correctly aligned stack.
 * NOTE: ESI is destroyed in the process, and hence cannot
 * be directly used as a parameter. Users of this macro must
 * independently preserve ESI (a non-volatile) if the routine is
 * intended to be called from C, for instance.
 */

#define CCALL(fn)			\
	movl	%esp, %esi		;\
	andl	$0xFFFFFFF0, %esp	;\
	call	EXT(fn)			;\
	movl	%esi, %esp

#define CCALL1(fn, arg1)		\
	movl	%esp, %esi		;\
	subl	$4, %esp		;\
	andl	$0xFFFFFFF0, %esp	;\
	movl	arg1, (%esp)		;\
	call	EXT(fn)			;\
	movl	%esi, %esp

#define CCALL2(fn, arg1, arg2)		\
	movl	%esp, %esi		;\
	subl	$8, %esp		;\
	andl	$0xFFFFFFF0, %esp	;\
	movl	arg2, 4(%esp)		;\
	movl	arg1, (%esp)		;\
	call	EXT(fn)			;\
	movl	%esi, %esp

/* This variant exists to permit adjustment of the stack by "dtrace" */
#define CCALL1WITHSP(fn, arg1)		\
	movl	%esp, %esi		;\
	subl	$12, %esp		;\
	andl	$0xFFFFFFF0, %esp	;\
	movl	%esi, 8(%esp)		;\
	leal	8(%esp), %esi		;\
	movl	%esi, 4(%esp)		;\
	movl	arg1, (%esp)		;\
	call	EXT(fn)			;\
	movl	8(%esp), %esp

/*
 * CCALL5 is used for callee functions with 3 arguments but
 * where arg2 (a3:a2) and arg3 (a5:a4) are 64-bit values.
 */
#define CCALL5(fn, a1, a2, a3, a4, a5)	\
	movl	%esp, %esi		;\
	subl	$20, %esp		;\
	andl	$0xFFFFFFF0, %esp	;\
	movl	a5, 16(%esp)		;\
	movl	a4, 12(%esp)		;\
	movl	a3,  8(%esp)		;\
	movl	a2,  4(%esp)		;\
	movl	a1,  (%esp)		;\
	call	EXT(fn)			;\
	movl	%esi, %esp

#elif defined(__x86_64__)

/* This variant exists to permit adjustment of the stack by "dtrace" */
#define CCALLWITHSP(fn)				 \
	mov	%rsp, %r12			;\
	sub	$8, %rsp			;\
	and	$0xFFFFFFFFFFFFFFF0, %rsp	;\
	mov	%r12, (%rsp)			;\
	leaq	(%rsp), %rsi			;\
	call	EXT(fn)				;\
	mov	(%rsp), %rsp
	
#define CCALL(fn)				 \
	mov	%rsp, %r12			;\
	and	$0xFFFFFFFFFFFFFFF0, %rsp	;\
	call	EXT(fn)				;\
	mov	%r12, %rsp

#define CCALL1(fn, arg1) 			 \
	mov	arg1, %rdi 			;\
	CCALL(fn)

#define CCALL2(fn, arg1, arg2)		 	 \
	mov	arg1, %rdi 			;\
	mov	arg2, %rsi 			;\
	CCALL(fn)

#define CCALL3(fn, arg1, arg2, arg3) 		 \
	mov	arg1, %rdi 			;\
	mov	arg2, %rsi 			;\
	mov	arg3, %rdx 			;\
	CCALL(fn)

#else
#error unsupported architecture
#endif

#endif /* _I386_ASM_H_ */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 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.
8f6c56a5	14	*
2d21ac55 A	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
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	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
1c79356b A	64	#if defined(MACH_KERNEL) \|\| defined(_KERNEL)
	65	#include <gprof.h>
	66	#endif /* MACH_KERNEL \|\| _KERNEL */
	67
b0d623f7	68	#if defined(__i386__)
1c79356b	69
2d21ac55	70	#define S_PC (%esp)
1c79356b A	71	#define S_ARG0 4(%esp)
	72	#define S_ARG1 8(%esp)
	73	#define S_ARG2 12(%esp)
	74	#define S_ARG3 16(%esp)
0c530ab8	75	#define S_ARG4 20(%esp)
1c79356b A	76
	77	#define FRAME pushl %ebp; movl %esp, %ebp
	78	#define EMARF leave
	79
2d21ac55	80	#define B_LINK (%ebp)
91447636	81	#define B_PC 4(%ebp)
1c79356b A	82	#define B_ARG0 8(%ebp)
	83	#define B_ARG1 12(%ebp)
	84	#define B_ARG2 16(%ebp)
	85	#define B_ARG3 20(%ebp)
	86
b0d623f7 A	87	#elif defined(__x86_64__)
	88
	89	#define S_PC (%rsp)
	90
	91	#define FRAME pushq %rbp; movq %rsp, %rbp
	92	#define EMARF leave
	93
	94	#define B_LINK (%rbp)
	95	#define B_PC 8(%rbp)
	96
	97	#else
	98	#error unsupported architecture
	99	#endif
	100
1c79356b A	101	/* There is another definition of ALIGN for .c sources */
1c79356b A	102	#ifdef ASSEMBLER
0c530ab8	103	#define ALIGN 4,0x90
1c79356b A	104	#endif /* ASSEMBLER */
	105
	106	#ifndef FALIGN
	107	#define FALIGN ALIGN
	108	#endif
	109
	110	#define LB(x,n) n
	111	#if __STDC__
	112	#ifndef __NO_UNDERSCORES__
	113	#define LCL(x) L ## x
	114	#define EXT(x) _ ## x
	115	#define LEXT(x) _ ## x ## :
	116	#else
	117	#define LCL(x) .L ## x
	118	#define EXT(x) x
	119	#define LEXT(x) x ## :
	120	#endif
	121	#define LBc(x,n) n ## :
	122	#define LBb(x,n) n ## b
	123	#define LBf(x,n) n ## f
	124	#else /* __STDC__ */
	125	#ifndef __NO_UNDERSCORES__
	126	#define LCL(x) L/**/x
	127	#define EXT(x) _/**/x
	128	#define LEXT(x) _//x//:
	129	#else /* __NO_UNDERSCORES__ */
	130	#define LCL(x) .L/**/x
	131	#define EXT(x) x
	132	#define LEXT(x) x/**/:
	133	#endif /* __NO_UNDERSCORES__ */
	134	#define LBc(x,n) n/**/:
	135	#define LBb(x,n) n/**/b
	136	#define LBf(x,n) n/**/f
	137	#endif /* __STDC__ */
	138
	139	#define SVC .byte 0x9a; .long 0; .word 0x7
	140
	141	#define RPC_SVC .byte 0x9a; .long 0; .word 0xf
	142
	143	#define String .asciz
	144	#define Value .word
	145	#define Times(a,b) (a*b)
	146	#define Divide(a,b) (a/b)
	147
	148	#define INB inb %dx, %al
	149	#define OUTB outb %al, %dx
	150	#define INL inl %dx, %eax
	151	#define OUTL outl %eax, %dx
	152
	153	#define data16 .byte 0x66
	154	#define addr16 .byte 0x67
	155
	156	#if !GPROF
	157	#define MCOUNT
	158
	159	#elif defined(__SHARED__)
	160	#define MCOUNT ; .data;\
	161	.align ALIGN;\
	162	LBc(x, 8) .long 0;\
	163	.text;\
	164	Gpush;\
	165	Gload;\
	166	leal Gotoff(LBb(x,8)),%edx;\
	167	Egaddr(%eax,_mcount_ptr);\
168	Gpop;\
169	call *(%eax);
170
171	#else /* !GPROF, !__SHARED__ */
91447636	172	#define MCOUNT ; call mcount;
1c79356b A	173	#endif /* GPROF */
	174
	175	#ifdef __ELF__
	176	#define ELF_FUNC(x) .type x,@function
	177	#define ELF_DATA(x) .type x,@object
	178	#define ELF_SIZE(x,s) .size x,s
	179	#else
	180	#define ELF_FUNC(x)
	181	#define ELF_DATA(x)
	182	#define ELF_SIZE(x,s)
	183	#endif
	184
	185	#define Entry(x) .globl EXT(x); ELF_FUNC(EXT(x)); .align FALIGN; LEXT(x)
	186	#define ENTRY(x) Entry(x) MCOUNT
	187	#define ENTRY2(x,y) .globl EXT(x); .globl EXT(y); \
	188	ELF_FUNC(EXT(x)); ELF_FUNC(EXT(y)); \
	189	.align FALIGN; LEXT(x); LEXT(y) \
	190	MCOUNT
	191	#if __STDC__
	192	#define ASENTRY(x) .globl x; .align FALIGN; x ## : ELF_FUNC(x) MCOUNT
	193	#else
	194	#define ASENTRY(x) .globl x; .align FALIGN; x: ELF_FUNC(x) MCOUNT
	195	#endif /* __STDC__ */
	196
	197	#define DATA(x) .globl EXT(x); ELF_DATA(EXT(x)); .align ALIGN; LEXT(x)
	198
	199	#define End(x) ELF_SIZE(x,.-x)
	200	#define END(x) End(EXT(x))
	201	#define ENDDATA(x) END(x)
	202	#define Enddata(x) End(x)
	203
	204	/*
	205	* ELF shared library accessor macros.
	206	* Gpush saves the %ebx register used for the GOT address
	207	* Gpop pops %ebx if we need a GOT
	208	* Gload loads %ebx with the GOT address if shared libraries are used
	209	* Gcall calls an external function.
	210	* Gotoff allows you to reference local labels.
	211	* Gotoff2 allows you to reference local labels with an index reg.
	212	* Gotoff3 allows you to reference local labels with an index reg & size.
	213	* Gaddr loads up a register with an address of an external item.
	214	* Gstack is the number of bytes that Gpush pushes on the stack.
	215	*
	216	* Varients of the above with E or L prefixes do EXT(name) or LCL(name)
	217	* respectively.
	218	*/
	219
	220	#ifndef __SHARED__
	221	#define Gpush
	222	#define Gpop
	223	#define Gload
	224	#define Gcall(func) call func
	225	#define Gotoff(lab) lab
	226	#define Gotoff2(l,r) l(r)
	227	#define Gotoff3(l,r,s) l(,r,s)
	228	#define Gaddr(to,lab) movl $lab,to
	229	#define Gcmp(lab,reg) cmpl $lab,reg
	230	#define Gmemload(lab,reg) movl lab,reg
	231	#define Gmemstore(reg,lab,tmp) movl reg,lab
	232	#define Gstack 0
	233
	234	#else
	235	#ifdef __ELF__ /* ELF shared libraries */
	236	#define Gpush pushl %ebx
237	#define Gpop popl %ebx
238	#define Gload call 9f; 9: popl %ebx; addl $_GLOBAL_OFFSET_TABLE_+[.-9b],%ebx
239	#define Gcall(func) call EXT(func)@PLT
240	#define Gotoff(lab) lab@GOTOFF(%ebx)
241	#define Gotoff2(l,r) l@GOTOFF(%ebx,r)
242	#define Gotoff3(l,r,s) l@GOTOFF(%ebx,r,s)
243	#define Gaddr(to,lab) movl lab@GOT(%ebx),to
244	#define Gcmp(lab,reg) cmpl reg,lab@GOT(%ebx)
245	#define Gmemload(lab,reg) movl lab@GOT(%ebx),reg; movl (reg),reg
246	#define Gmemstore(reg,lab,tmp) movl lab@GOT(%ebx),tmp; movl reg,(tmp)
247	#define Gstack 4
248
249	#else /* ROSE shared libraries */
250	#define Gpush
251	#define Gpop
252	#define Gload
253	#define Gcall(func) call *9f; .data; .align ALIGN; 9: .long func; .text
254	#define Gotoff(lab) lab
255	#define Gotoff2(l,r) l(r)
256	#define Gotoff3(l,r,s) l(,r,s)
257	#define Gaddr(to,lab) movl 9f,to; .data; .align ALIGN; 9: .long lab; .text
258	#define Gcmp(lab,reg) cmpl reg,9f; .data; .align ALIGN; 9: .long lab; .text
259	#define Gmemload(lab,reg) movl 9f,reg; movl (reg),reg; .data; .align ALIGN; 9: .long lab; .text
260	#define Gmemstore(reg,lab,tmp) movl 9f,tmp; movl reg,(tmp); .data; .align ALIGN; 9: .long lab; .text
261	#define Gstack 0
262	#endif /* __ELF__ */
263	#endif /* __SHARED__ */
264
265	/* Egotoff is not provided, since external symbols should not use @GOTOFF
266	relocations. */
267	#define Egcall(func) Gcall(EXT(func))
268	#define Egaddr(to,lab) Gaddr(to,EXT(lab))
269	#define Egcmp(lab,reg) Gcmp(EXT(lab),reg)
270	#define Egmemload(lab,reg) Gmemload(EXT(lab),reg)
271	#define Egmemstore(reg,lab,tmp) Gmemstore(reg,EXT(lab),tmp)
272
273	#define Lgotoff(lab) Gotoff(LCL(lab))
274	#define Lgotoff2(l,r) Gotoff2(LCL(l),r)
275	#define Lgotoff3(l,r,s) Gotoff3(LCL(l),r,s)
276	#define Lgcmp(lab,reg) Gcmp(LCL(lab),reg)
277	#define Lgmemload(lab,reg) movl Lgotoff(lab),reg
278	#define Lgmemstore(reg,lab,tmp) movl reg,Lgotoff(lab)
279
316670eb	280	#ifndef ASSEMBLER
1c79356b A	281	/* These defines are here for .c files that wish to reference global symbols
	282	* within __asm__ statements.
	283	*/
	284	#ifndef __NO_UNDERSCORES__
	285	#define CC_SYM_PREFIX "_"
	286	#else
	287	#define CC_SYM_PREFIX ""
	288	#endif /* __NO_UNDERSCORES__ */
	289	#endif /* ASSEMBLER */
	290
6d2010ae A	291	/*
	292	* The following macros make calls into C code.
	293	* They dynamically align the stack to 16 bytes.
	294	*/
	295	#if defined(__i386__)
	296	/*
	297	* Arguments are moved (not pushed) onto the correctly aligned stack.
	298	* NOTE: ESI is destroyed in the process, and hence cannot
	299	* be directly used as a parameter. Users of this macro must
	300	* independently preserve ESI (a non-volatile) if the routine is
	301	* intended to be called from C, for instance.
	302	*/
	303
	304	#define CCALL(fn) \
	305	movl %esp, %esi ;\
	306	andl $0xFFFFFFF0, %esp ;\
	307	call EXT(fn) ;\
	308	movl %esi, %esp
	309
	310	#define CCALL1(fn, arg1) \
	311	movl %esp, %esi ;\
	312	subl $4, %esp ;\
	313	andl $0xFFFFFFF0, %esp ;\
	314	movl arg1, (%esp) ;\
	315	call EXT(fn) ;\
	316	movl %esi, %esp
	317
	318	#define CCALL2(fn, arg1, arg2) \
	319	movl %esp, %esi ;\
	320	subl $8, %esp ;\
	321	andl $0xFFFFFFF0, %esp ;\
	322	movl arg2, 4(%esp) ;\
	323	movl arg1, (%esp) ;\
	324	call EXT(fn) ;\
	325	movl %esi, %esp
	326
	327	/* This variant exists to permit adjustment of the stack by "dtrace" */
	328	#define CCALL1WITHSP(fn, arg1) \
	329	movl %esp, %esi ;\
	330	subl $12, %esp ;\
	331	andl $0xFFFFFFF0, %esp ;\
	332	movl %esi, 8(%esp) ;\
	333	leal 8(%esp), %esi ;\
	334	movl %esi, 4(%esp) ;\
	335	movl arg1, (%esp) ;\
	336	call EXT(fn) ;\
	337	movl 8(%esp), %esp
	338
	339	/*
	340	* CCALL5 is used for callee functions with 3 arguments but
	341	* where arg2 (a3:a2) and arg3 (a5:a4) are 64-bit values.
	342	*/
	343	#define CCALL5(fn, a1, a2, a3, a4, a5) \
	344	movl %esp, %esi ;\
	345	subl $20, %esp ;\
	346	andl $0xFFFFFFF0, %esp ;\
	347	movl a5, 16(%esp) ;\
	348	movl a4, 12(%esp) ;\
	349	movl a3, 8(%esp) ;\
	350	movl a2, 4(%esp) ;\
	351	movl a1, (%esp) ;\
	352	call EXT(fn) ;\
	353	movl %esi, %esp
	354
355	#elif defined(__x86_64__)
356
357	/* This variant exists to permit adjustment of the stack by "dtrace" */
358	#define CCALLWITHSP(fn) \
359	mov %rsp, %r12 ;\
360	sub $8, %rsp ;\
361	and $0xFFFFFFFFFFFFFFF0, %rsp ;\
362	mov %r12, (%rsp) ;\
363	leaq (%rsp), %rsi ;\
364	call EXT(fn) ;\
365	mov (%rsp), %rsp
366
367	#define CCALL(fn) \
368	mov %rsp, %r12 ;\
369	and $0xFFFFFFFFFFFFFFF0, %rsp ;\
370	call EXT(fn) ;\
371	mov %r12, %rsp
372
373	#define CCALL1(fn, arg1) \
374	mov arg1, %rdi ;\
375	CCALL(fn)
376
377	#define CCALL2(fn, arg1, arg2) \
378	mov arg1, %rdi ;\
39236c6e	379	mov arg2, %rsi ;\
6d2010ae A	380	CCALL(fn)
	381
	382	#define CCALL3(fn, arg1, arg2, arg3) \
	383	mov arg1, %rdi ;\
	384	mov arg2, %rsi ;\
	385	mov arg3, %rdx ;\
	386	CCALL(fn)
	387
	388	#else
	389	#error unsupported architecture
	390	#endif
	391
1c79356b	392	#endif /* _I386_ASM_H_ */