| /* 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) |
