/* $NetBSD: asm.h,v 1.4 2025/01/06 10:46:43 martin Exp $ */

/*-
 * Copyright (c) 2014 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Matt Thomas of 3am Software Foundry.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

#ifndef _OR1K_ASM_H_
#define _OR1K_ASM_H_

#define __BIT(n)        (1 << (n))
#define __BITS(hi,lo)   ((~((~0)<<((hi)+1)))&((~0)<<(lo)))

#define _C_LABEL(x)     x
#define _ASM_LABEL(x)   x

#define __CONCAT(x,y)   x ## y
#define __STRING(x)     #x

#ifndef _ALIGN_TEXT
# define _ALIGN_TEXT .align 4
#endif

#ifndef _TEXT_SECTION
#define _TEXT_SECTION   .text
#endif
#define _ASM_TYPE_FUNCTION      @function
#define _ASM_TYPE_OBJECT        @object
#define _ENTRY(x) \
        _TEXT_SECTION; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x:
#define _END(x)         .size x,.-x

#ifdef GPROF
# define _PROF_PROLOGUE \
        mov x9, x30; l.jal __mcount
#else
# define _PROF_PROLOGUE
#endif

#define ENTRY(y)                _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
#define ENTRY_NP(y)             _ENTRY(_C_LABEL(y))
#define END(y)                  _END(_C_LABEL(y))
#define END(y)                  _END(_C_LABEL(y))
#define ASENTRY(y)              _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
#define ASENTRY_NP(y)           _ENTRY(_ASM_LABEL(y))
#define ASEND(y)                _END(_ASM_LABEL(y))

#define ASMSTR          .asciz

#ifdef __PIC__
#define PLT(x)                  plt(x)
#define PIC_GOTSETUP(r)                                 \
        l.jal   999f                                    ;\
        l.nop                                           ;\
999:    l.movhi r,gotpchi(_GLOBAL_OFFSET_TABLE_+0)      ;\
        l.ori   r,r,gotpclo(_GLOBAL_OFFSET_TABLE_+4)    ;\
        l.add   r,r,r9
#else
#define PLT(x)                  x
#endif

#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
#define RCSID(x)        __RCSID(x)

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

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

#define WARN_REFERENCES(sym,msg)                                        \
        .pushsection .gnu.warning. ## sym;                              \
        .ascii msg;                                                     \
        .popsection

#endif /* !_OR1K_ASM_H_ */