/*      $NetBSD: asm.h,v 1.30 2025/01/06 10:46:44 martin Exp $ */
/*
* Copyright (c) 1982, 1993
*      The Regents of the University of California.  All rights reserved.
*
* 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.
*
*      @(#)DEFS.h      8.1 (Berkeley) 6/4/93
*/

#ifndef _VAX_ASM_H_
#define _VAX_ASM_H_

#define R0      0x001
#define R1      0x002
#define R2      0x004
#define R3      0x008
#define R4      0x010
#define R5      0x020
#define R6      0x040
#define R7      0x080
#define R8      0x100
#define R9      0x200
#define R10     0x400
#define R11     0x800

#define _C_LABEL(x)     x

#define _ASM_LABEL(x)   x

#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 .p2align 2
#endif

#define _ENTRY(x, regs) \
       .text; _ALIGN_TEXT; .globl x; .type x@function; x: .word regs

#ifdef GPROF
# define _PROF_PROLOGUE \
       .data; 1:; .long 0; .text; moval 1b,%r0; jsb _ASM_LABEL(__mcount)
#else
# define _PROF_PROLOGUE
#endif

#define ENTRY(x, regs)          _ENTRY(_C_LABEL(x), regs); _PROF_PROLOGUE
#define NENTRY(x, regs)         _ENTRY(_C_LABEL(x), regs)
#define ASENTRY(x, regs)        _ENTRY(_ASM_LABEL(x), regs); _PROF_PROLOGUE
#define END(x)                  .size _C_LABEL(x),.-_C_LABEL(x)

#define ALTENTRY(x)             .globl _C_LABEL(x); _C_LABEL(x):
#ifdef _NETBSD_REVISIONID
#define RCSID(x)        .pushsection ".ident","MS",@progbits,1;         \
                       .asciz x;                                       \
                       .ascii "$"; .ascii "NetBSD: "; .ascii __FILE__; \
                       .ascii " "; .ascii _NETBSD_REVISIONID;          \
                       .asciz " $";                                    \
                       .popsection
#else
#define RCSID(x)        .pushsection ".ident","MS",@progbits,1;         \
                       .asciz x;                                       \
                       .popsection
#endif

#ifdef NO_KERNEL_RCSIDS
#define __KERNEL_RCSID(_n, _s)  /* nothing */
#else
#define __KERNEL_RCSID(_n, _s)  RCSID(_s)
#endif

#define WEAK_ALIAS(alias,sym)                                           \
       .weak alias;                                                    \
       alias = sym

/*
* STRONG_ALIAS: create a strong alias.
*/
#define STRONG_ALIAS(alias,sym)                                         \
       .globl alias;                                                   \
       alias = sym

#ifdef __STDC__
#define WARN_REFERENCES(sym,msg)                                        \
       .pushsection .gnu.warning. ## sym;                              \
       .ascii msg;                                                     \
       .popsection
#else
#define WARN_REFERENCES(sym,msg)                                        \
       .pushsection .gnu.warning./**/sym;                              \
       .ascii msg;                                                     \
       .popsection
#endif /* __STDC__ */

macro   polyf arg:req degree:req tbladdr:req
       movf    \arg, %r1
       movzwl  \degree, %r2
       movab   \tbladdr, %r3

       movf    (%r3)+, %r0
1:
       mulf2   %r1, %r0                /* result *= arg */
       addf2   (%r3)+, %r0             /* result += c[n] */
       sobgtr  %r2, 1b
       clrf    %r1                     /* r1 is 0 on finish */
endm

macro   polyd arg:req degree:req tbladdr:req
       movd    \arg, %r4
       movzwl  \degree, %r2
       movab   \tbladdr, %r3

       movd    (%r3)+, %r0
1:
       muld2   %r4, %r0                /* result *= arg */
       addd2   (%r3)+, %r0             /* result += c[n] */
       sobgtr  %r2, 1b
       clrq    %r4                     /* r4, r5 are 0 on finish */
endm

#endif /* !_VAX_ASM_H_ */

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