/* SPDX-License-Identifier: GPL-2.0+ */ #include <linux/linkage.h> #include <asm/stackframe.h> .text .macro save_all_base_regs cfi_st ra, PT_R1 cfi_st tp, PT_R2 cfi_st a0, PT_R4 cfi_st a1, PT_R5 cfi_st a2, PT_R6 cfi_st a3, PT_R7 cfi_st a4, PT_R8 cfi_st a5, PT_R9 cfi_st a6, PT_R10 cfi_st a7, PT_R11 cfi_st t0, PT_R12 cfi_st t1, PT_R13 cfi_st t2, PT_R14 cfi_st t3, PT_R15 cfi_st t4, PT_R16 cfi_st t5, PT_R17 cfi_st t6, PT_R18 cfi_st t7, PT_R19 cfi_st t8, PT_R20 cfi_st u0, PT_R21 cfi_st fp, PT_R22 cfi_st s0, PT_R23 cfi_st s1, PT_R24 cfi_st s2, PT_R25 cfi_st s3, PT_R26 cfi_st s4, PT_R27 cfi_st s5, PT_R28 cfi_st s6, PT_R29 cfi_st s7, PT_R30 cfi_st s8, PT_R31 csrrd t0, LOONGARCH_CSR_CRMD andi t0, t0, 0x7 /* extract bit[1:0] PLV, bit[2] IE */ LONG_S t0, sp, PT_CRMD .endm .macro restore_all_base_regs cfi_ld tp, PT_R2 cfi_ld a0, PT_R4 cfi_ld a1, PT_R5 cfi_ld a2, PT_R6 cfi_ld a3, PT_R7 cfi_ld a4, PT_R8 cfi_ld a5, PT_R9 cfi_ld a6, PT_R10 cfi_ld a7, PT_R11 cfi_ld t0, PT_R12 cfi_ld t1, PT_R13 cfi_ld t2, PT_R14 cfi_ld t3, PT_R15 cfi_ld t4, PT_R16 cfi_ld t5, PT_R17 cfi_ld t6, PT_R18 cfi_ld t7, PT_R19 cfi_ld t8, PT_R20 cfi_ld u0, PT_R21 cfi_ld fp, PT_R22 cfi_ld s0, PT_R23 cfi_ld s1, PT_R24 cfi_ld s2, PT_R25 cfi_ld s3, PT_R26 cfi_ld s4, PT_R27 cfi_ld s5, PT_R28 cfi_ld s6, PT_R29 cfi_ld s7, PT_R30 cfi_ld s8, PT_R31 LONG_L t0, sp, PT_CRMD li.d t1, 0x7 /* mask bit[1:0] PLV, bit[2] IE */ csrxchg t0, t1, LOONGARCH_CSR_CRMD .endm SYM_CODE_START(arch_rethook_trampoline) addi.d sp, sp, -PT_SIZE save_all_base_regs addi.d t0, sp, PT_SIZE LONG_S t0, sp, PT_R3 move a0, sp /* pt_regs */ bl arch_rethook_trampoline_callback /* use the result as the return-address */ move ra, a0 restore_all_base_regs addi.d sp, sp, PT_SIZE jr ra SYM_CODE_END(arch_rethook_trampoline)