/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Hibernation support specific for LoongArch
 *
 * Author: Huacai Chen <chenhuacai@loongson.cn>
 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
 */
#include <linux/linkage.h>
#include <asm/asm.h>
#include <asm/asm-offsets.h>
#include <asm/regdef.h>

.text
SYM_FUNC_START(swsusp_asm_suspend)
        la.pcrel        t0, saved_regs
        PTR_S           ra, t0, PT_R1
        PTR_S           tp, t0, PT_R2
        PTR_S           sp, t0, PT_R3
        PTR_S           u0, t0, PT_R21
        PTR_S           fp, t0, PT_R22
        PTR_S           s0, t0, PT_R23
        PTR_S           s1, t0, PT_R24
        PTR_S           s2, t0, PT_R25
        PTR_S           s3, t0, PT_R26
        PTR_S           s4, t0, PT_R27
        PTR_S           s5, t0, PT_R28
        PTR_S           s6, t0, PT_R29
        PTR_S           s7, t0, PT_R30
        PTR_S           s8, t0, PT_R31
        b               swsusp_save
SYM_FUNC_END(swsusp_asm_suspend)

SYM_FUNC_START(swsusp_asm_resume)
        la.pcrel        t0, restore_pblist
        PTR_L           t0, t0, 0
0:
        PTR_L           t1, t0, PBE_ADDRESS  /* source */
        PTR_L           t2, t0, PBE_ORIG_ADDRESS /* destination */
        PTR_LI          t3, _PAGE_SIZE
        PTR_ADD         t3, t3, t1
1:
        REG_L           t8, t1, 0
        REG_S           t8, t2, 0
        PTR_ADDI        t1, t1, SZREG
        PTR_ADDI        t2, t2, SZREG
        bne             t1, t3, 1b
        PTR_L           t0, t0, PBE_NEXT
        bnez            t0, 0b
        la.pcrel        t0, saved_regs
        PTR_L           ra, t0, PT_R1
        PTR_L           tp, t0, PT_R2
        PTR_L           sp, t0, PT_R3
        PTR_L           u0, t0, PT_R21
        PTR_L           fp, t0, PT_R22
        PTR_L           s0, t0, PT_R23
        PTR_L           s1, t0, PT_R24
        PTR_L           s2, t0, PT_R25
        PTR_L           s3, t0, PT_R26
        PTR_L           s4, t0, PT_R27
        PTR_L           s5, t0, PT_R28
        PTR_L           s6, t0, PT_R29
        PTR_L           s7, t0, PT_R30
        PTR_L           s8, t0, PT_R31
        PTR_LI          a0, 0x0
        jirl            zero, ra, 0
SYM_FUNC_END(swsusp_asm_resume)