1*4882a593Smuzhiyun/* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun/* 3*4882a593Smuzhiyun * Trampoline to trace irqs off. (otherwise CALLER_ADDR1 might crash) 4*4882a593Smuzhiyun * Copyright 2008 by Steven Rostedt, Red Hat, Inc 5*4882a593Smuzhiyun * (inspired by Andi Kleen's thunk_64.S) 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun #include <linux/linkage.h> 8*4882a593Smuzhiyun #include <asm/asm.h> 9*4882a593Smuzhiyun #include <asm/export.h> 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun /* put return address in eax (arg1) */ 12*4882a593Smuzhiyun .macro THUNK name, func, put_ret_addr_in_eax=0 13*4882a593SmuzhiyunSYM_CODE_START_NOALIGN(\name) 14*4882a593Smuzhiyun pushl %eax 15*4882a593Smuzhiyun pushl %ecx 16*4882a593Smuzhiyun pushl %edx 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun .if \put_ret_addr_in_eax 19*4882a593Smuzhiyun /* Place EIP in the arg1 */ 20*4882a593Smuzhiyun movl 3*4(%esp), %eax 21*4882a593Smuzhiyun .endif 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun call \func 24*4882a593Smuzhiyun popl %edx 25*4882a593Smuzhiyun popl %ecx 26*4882a593Smuzhiyun popl %eax 27*4882a593Smuzhiyun RET 28*4882a593Smuzhiyun _ASM_NOKPROBE(\name) 29*4882a593SmuzhiyunSYM_CODE_END(\name) 30*4882a593Smuzhiyun .endm 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun THUNK preempt_schedule_thunk, preempt_schedule 33*4882a593Smuzhiyun THUNK preempt_schedule_notrace_thunk, preempt_schedule_notrace 34*4882a593Smuzhiyun EXPORT_SYMBOL(preempt_schedule_thunk) 35*4882a593Smuzhiyun EXPORT_SYMBOL(preempt_schedule_notrace_thunk) 36*4882a593Smuzhiyun 37