mips/power/hibernate_asm.S

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Hibernation support specific for mips - temporary page tables
0004  *
0005  * Copyright (C) 2009 Lemote Inc.
0006  * Author: Hu Hongbing <huhb@lemote.com>
0007  *     Wu Zhangjin <wuzhangjin@gmail.com>
0008  */
0009 #include <asm/asm-offsets.h>
0010 #include <asm/regdef.h>
0011 #include <asm/asm.h>
0012
0013 .text
0014 LEAF(swsusp_arch_suspend)
0015     PTR_LA t0, saved_regs
0016     PTR_S ra, PT_R31(t0)
0017     PTR_S sp, PT_R29(t0)
0018     PTR_S fp, PT_R30(t0)
0019     PTR_S gp, PT_R28(t0)
0020     PTR_S s0, PT_R16(t0)
0021     PTR_S s1, PT_R17(t0)
0022     PTR_S s2, PT_R18(t0)
0023     PTR_S s3, PT_R19(t0)
0024     PTR_S s4, PT_R20(t0)
0025     PTR_S s5, PT_R21(t0)
0026     PTR_S s6, PT_R22(t0)
0027     PTR_S s7, PT_R23(t0)
0028     j swsusp_save
0029 END(swsusp_arch_suspend)
0030
0031 LEAF(restore_image)
0032     PTR_L t0, restore_pblist
0033 0:
0034     PTR_L t1, PBE_ADDRESS(t0)   /* source */
0035     PTR_L t2, PBE_ORIG_ADDRESS(t0) /* destination */
0036     PTR_ADDU t3, t1, _PAGE_SIZE
0037 1:
0038     REG_L t8, (t1)
0039     REG_S t8, (t2)
0040     PTR_ADDIU t1, t1, SZREG
0041     PTR_ADDIU t2, t2, SZREG
0042     bne t1, t3, 1b
0043     PTR_L t0, PBE_NEXT(t0)
0044     bnez t0, 0b
0045     PTR_LA t0, saved_regs
0046     PTR_L ra, PT_R31(t0)
0047     PTR_L sp, PT_R29(t0)
0048     PTR_L fp, PT_R30(t0)
0049     PTR_L gp, PT_R28(t0)
0050     PTR_L s0, PT_R16(t0)
0051     PTR_L s1, PT_R17(t0)
0052     PTR_L s2, PT_R18(t0)
0053     PTR_L s3, PT_R19(t0)
0054     PTR_L s4, PT_R20(t0)
0055     PTR_L s5, PT_R21(t0)
0056     PTR_L s6, PT_R22(t0)
0057     PTR_L s7, PT_R23(t0)
0058     PTR_LI v0, 0x0
0059     jr ra
0060 END(restore_image)