1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Save registers before calling assembly functions. This avoids 4 * disturbance of register allocation in some inline assembly constructs. 5 * Copyright 2001,2002 by Andi Kleen, SuSE Labs. 6 */ 7#include <linux/linkage.h> 8#include "calling.h" 9#include <asm/asm.h> 10#include <asm/export.h> 11 12 /* rdi: arg1 ... normal C conventions. rax is saved/restored. */ 13 .macro THUNK name, func 14SYM_FUNC_START_NOALIGN(\name) 15 pushq %rbp 16 movq %rsp, %rbp 17 18 pushq %rdi 19 pushq %rsi 20 pushq %rdx 21 pushq %rcx 22 pushq %rax 23 pushq %r8 24 pushq %r9 25 pushq %r10 26 pushq %r11 27 28 call \func 29 jmp __thunk_restore 30SYM_FUNC_END(\name) 31 _ASM_NOKPROBE(\name) 32 .endm 33 34 THUNK preempt_schedule_thunk, preempt_schedule 35 THUNK preempt_schedule_notrace_thunk, preempt_schedule_notrace 36 EXPORT_SYMBOL(preempt_schedule_thunk) 37 EXPORT_SYMBOL(preempt_schedule_notrace_thunk) 38 39SYM_CODE_START_LOCAL_NOALIGN(__thunk_restore) 40 popq %r11 41 popq %r10 42 popq %r9 43 popq %r8 44 popq %rax 45 popq %rcx 46 popq %rdx 47 popq %rsi 48 popq %rdi 49 popq %rbp 50 RET 51 _ASM_NOKPROBE(__thunk_restore) 52SYM_CODE_END(__thunk_restore) 53