xref: /linux-6.15/arch/um/kernel/exec.c (revision bf67dbf4)
10d1fb0a4SAlex Dewar // SPDX-License-Identifier: GPL-2.0
21d3468a6SJeff Dike /*
3ba180fd4SJeff Dike  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
41d3468a6SJeff Dike  */
51d3468a6SJeff Dike 
673395a00SAl Viro #include <linux/stddef.h>
773395a00SAl Viro #include <linux/module.h>
873395a00SAl Viro #include <linux/fs.h>
973395a00SAl Viro #include <linux/ptrace.h>
10589ee628SIngo Molnar #include <linux/sched/mm.h>
1129930025SIngo Molnar #include <linux/sched/task.h>
1268db0cf1SIngo Molnar #include <linux/sched/task_stack.h>
1373395a00SAl Viro #include <linux/slab.h>
1473395a00SAl Viro #include <asm/current.h>
1573395a00SAl Viro #include <asm/processor.h>
167c0f6ba6SLinus Torvalds #include <linux/uaccess.h>
1737185b33SAl Viro #include <as-layout.h>
1837185b33SAl Viro #include <mem_user.h>
19dbba7f70SAl Viro #include <registers.h>
2037185b33SAl Viro #include <skas.h>
2137185b33SAl Viro #include <os.h>
221d3468a6SJeff Dike 
flush_thread(void)231d3468a6SJeff Dike void flush_thread(void)
241d3468a6SJeff Dike {
251d3468a6SJeff Dike 	arch_flush_thread(&current->thread.arch);
2677bf4400SJeff Dike 
279436d5c3SAl Viro 	get_safe_registers(current_pt_regs()->regs.gp,
289436d5c3SAl Viro 			   current_pt_regs()->regs.fp);
2977bf4400SJeff Dike 
306c738ffaSJeff Dike 	__switch_mm(&current->mm->context.id);
311d3468a6SJeff Dike }
321d3468a6SJeff Dike 
start_thread(struct pt_regs * regs,unsigned long eip,unsigned long esp)331d3468a6SJeff Dike void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
341d3468a6SJeff Dike {
3577bf4400SJeff Dike 	PT_REGS_IP(regs) = eip;
3677bf4400SJeff Dike 	PT_REGS_SP(regs) = esp;
37*c200e4bbSEric W. Biederman 	clear_thread_flag(TIF_SINGLESTEP);
381d3468a6SJeff Dike }
3942459792SAl Viro EXPORT_SYMBOL(start_thread);
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