NetBSD/sys/arch/i386/netboot/asm.h

/*
 * source in this file came from
 * the 386BSD boot blocks written by Julian Elsicher.
 * 
 * Ported to Boot 386BSD by Julian Elsicher (julian@tfs.com) Sept. 1992
 *
 * 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.
 *
 *	$Id: asm.h,v 1.2 1993/08/02 17:52:48 mycroft Exp $
 */

#define S_ARG0	 4(%esp)
#define S_ARG1	 8(%esp)
#define S_ARG2	12(%esp)
#define S_ARG3	16(%esp)

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

#define B_ARG0	 8(%ebp)
#define B_ARG1	12(%ebp)
#define B_ARG2	16(%ebp)
#define B_ARG3	20(%ebp)

#ifdef	wheeze

#define ALIGN 4
#define EXT(x) x
#define LEXT(x) x:
#define LCL(x) ./**/x

#define LB(x,n) ./**/x
#define LBb(x,n) ./**/x
#define LBf(x,n) ./**/x

#define	SVC lcall $7,$0

#define String .string
#define Value  .value
#define Times(a,b) [a\*b]
#define Divide(a,b) [a\\b]

#define INB	inb	(%dx)
#define OUTB	outb	(%dx)
#define INL	inl	(%dx)
#define OUTL	outl	(%dx)

#else	wheeze
/* #define ALIGN */
#define ALIGN 4
#define	LCL(x)	x

#define LB(x,n) n
#ifdef	__STDC__
#define EXT(x) _ ## x
#define LEXT(x) _ ## x ## :

#define LBb(x,n) n ## b
#define LBf(x,n) n ## f
#else __STDC__
#define EXT(x) _/**/x
#define LEXT(x) _/**/x/**/:
#define LBb(x,n) n/**/b
#define LBf(x,n) n/**/f
#endif __STDC__
#define SVC .byte 0x9a; .long 0; .word 0x7

#define String	.ascii
#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

#endif	wheeze

#define data32	.byte 0x66
#define data16	.byte 0x66
#define addr16	.byte 0x67



#ifdef GPROF
#ifdef	__STDC__

#define MCOUNT		.data; LB(x, 9); .long 0; .text; lea LBb(x, 9),%edx; call mcount
#define	ENTRY(x)	.globl EXT(x); .align ALIGN; LEXT(x) ; \
			pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
#define	ENTRY2(x,y)	.globl EXT(x); .globl EXT(y); \
			.align ALIGN; LEXT(x) LEXT(y) ; \
			pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
#define	ASENTRY(x) 	.globl x; .align ALIGN; x ## : ; \
  			pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;

#else   __STDC__

#define MCOUNT		.data; LB(x, 9): .long 0; .text; lea LBb(x, 9),%edx; call mcount
#define	ENTRY(x)	.globl EXT(x); .align ALIGN; LEXT(x) ; \
			pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
#define	ENTRY2(x,y)	.globl EXT(x); .globl EXT(y); \
			.align ALIGN; LEXT(x) LEXT(y)
#define	ASENTRY(x) 	.globl x; .align ALIGN; x: ; \
  			pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;

#endif	__STDC__
#else	GPROF
#ifdef	__STDC__

#define MCOUNT
#define	ENTRY(x)	.globl EXT(x); .align ALIGN; LEXT(x)
#define	ENTRY2(x,y)	.globl EXT(x); .globl EXT(y); \
			.align ALIGN; LEXT(x) LEXT(y)
#define	ASENTRY(x)	.globl x; .align ALIGN; x ## :

#else 	__STDC__

#define MCOUNT
#define	ENTRY(x)	.globl EXT(x); .align ALIGN; LEXT(x)
#define	ENTRY2(x,y)	.globl EXT(x); .globl EXT(y); \
			.align ALIGN; LEXT(x) LEXT(y)
#define	ASENTRY(x)	.globl x; .align ALIGN; x:

#endif	__STDC__
#endif	GPROF

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

CR0_PE		=	0x00000001

KERN_CODE_SEG	=	0x08
KERN_DATA_SEG	=	0x10
BOOT_16_SEG	=	0x18

#define opsize .byte 0x66
#define addrsize .byte 0x67