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/*

 * Copyright © 2018, VideoLAN and dav1d authors

 * Copyright © 2023, Nathan Egge

 * 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.

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 DAV1D_SRC_RISCV_ASM_S

#define DAV1D_SRC_RISCV_ASM_S

#include "config.h"

#if !defined(PIC)

#if defined(__PIC__)

#define PIC __PIC__

#elif defined(__pic__)

#define PIC __pic__

#endif

#endif

#ifndef PRIVATE_PREFIX

#define PRIVATE_PREFIX dav1d_

#endif

#define PASTE(a,b) a ## b

#define CONCAT(a,b) PASTE(a,b)

#ifdef PREFIX

#define EXTERN CONCAT(_,PRIVATE_PREFIX)

#else

#define EXTERN PRIVATE_PREFIX

#endif

.macro arch ext:req, more:vararg

    .option arch, +\ext

    .ifnb \more

        arch \more

    .endif

.endm

.macro function name, export=0, ext=

    .macro endfunc

#ifdef __ELF__

        .size   \name, . - \name

#endif

        .option pop

        .purgem endfunc

    .endm

        .text

        .option push

    .ifnb \ext

        arch \ext

    .endif

    .if \export

        .global EXTERN\name

#ifdef __ELF__

        .type   EXTERN\name, %function

        .hidden EXTERN\name

#elif defined(__MACH__)

        .private_extern EXTERN\name

#endif

EXTERN\name:

    .else

#ifdef __ELF__

        .type \name, %function

#endif

    .endif

\name:

.endm

.macro  const   name, export=0, align=2

    .macro endconst

#ifdef __ELF__

        .size   \name, . - \name

#endif

        .purgem endconst

    .endm

#if defined(_WIN32)

        .section        .rdata

#elif !defined(__MACH__)

        .section        .rodata

#else

        .const_data

#endif

        .align          \align

    .if \export

        .global EXTERN\name

#ifdef __ELF__

        .hidden EXTERN\name

#elif defined(__MACH__)

        .private_extern EXTERN\name

#endif

EXTERN\name:

    .endif

\name:

.endm

.macro thread_local name, align=3, quads=1

    .macro end_thread_local

        .size  \name, . - \name

        .purgem end_thread_local

    .endm

        .section .tbss, "waT"

        .align \align

        .hidden \name

\name:

    .rept \quads

        .quad 0

    .endr

        end_thread_local

.endm

#define L(x) .L ## x

#define MA      (1 << 7)

#define TA      (1 << 6)

#define E8      (0 << 3)

#define E16     (1 << 3)

#define E32     (2 << 3)

#define E64     (3 << 3)

#define M1      0

#define M2      1

#define M4      2

#define M8      3

#define MF2     7

#define MF4     6

#define MF8     5

#endif /* DAV1D_SRC_RISCV_ASM_S */