root/arch/mips/power/hibernate_asm.S

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Hibernation support specific for mips - temporary page tables
   4  *
   5  * Copyright (C) 2009 Lemote Inc.
   6  * Author: Hu Hongbing <huhb@lemote.com>
   7  *         Wu Zhangjin <wuzhangjin@gmail.com>
   8  */
   9 #include <asm/asm-offsets.h>
  10 #include <asm/regdef.h>
  11 #include <asm/asm.h>
  12 
  13 .text
  14 LEAF(swsusp_arch_suspend)
  15         PTR_LA t0, saved_regs
  16         PTR_S ra, PT_R31(t0)
  17         PTR_S sp, PT_R29(t0)
  18         PTR_S fp, PT_R30(t0)
  19         PTR_S gp, PT_R28(t0)
  20         PTR_S s0, PT_R16(t0)
  21         PTR_S s1, PT_R17(t0)
  22         PTR_S s2, PT_R18(t0)
  23         PTR_S s3, PT_R19(t0)
  24         PTR_S s4, PT_R20(t0)
  25         PTR_S s5, PT_R21(t0)
  26         PTR_S s6, PT_R22(t0)
  27         PTR_S s7, PT_R23(t0)
  28         j swsusp_save
  29 END(swsusp_arch_suspend)
  30 
  31 LEAF(restore_image)
  32         PTR_L t0, restore_pblist
  33 0:
  34         PTR_L t1, PBE_ADDRESS(t0)   /* source */
  35         PTR_L t2, PBE_ORIG_ADDRESS(t0) /* destination */
  36         PTR_ADDU t3, t1, _PAGE_SIZE
  37 1:
  38         REG_L t8, (t1)
  39         REG_S t8, (t2)
  40         PTR_ADDIU t1, t1, SZREG
  41         PTR_ADDIU t2, t2, SZREG
  42         bne t1, t3, 1b
  43         PTR_L t0, PBE_NEXT(t0)
  44         bnez t0, 0b
  45         PTR_LA t0, saved_regs
  46         PTR_L ra, PT_R31(t0)
  47         PTR_L sp, PT_R29(t0)
  48         PTR_L fp, PT_R30(t0)
  49         PTR_L gp, PT_R28(t0)
  50         PTR_L s0, PT_R16(t0)
  51         PTR_L s1, PT_R17(t0)
  52         PTR_L s2, PT_R18(t0)
  53         PTR_L s3, PT_R19(t0)
  54         PTR_L s4, PT_R20(t0)
  55         PTR_L s5, PT_R21(t0)
  56         PTR_L s6, PT_R22(t0)
  57         PTR_L s7, PT_R23(t0)
  58         PTR_LI v0, 0x0
  59         jr ra
  60 END(restore_image)