parisc/kernel/process.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *    PARISC Architecture-dependent parts of process handling
6  *    Copyright (C) 1999-2003 Matthew Wilcox <willy at parisc-linux.org>
8  *    Copyright (C) 2000 John Marvin <jsm at parisc-linux.org>
9  *    Copyright (C) 2000 David Huggins-Daines <dhd with pobox.org>
10  *    Copyright (C) 2000-2003 Paul Bame <bame at parisc-linux.org>
13  *    Copyright (C) 2000 Richard Hirst <rhirst with parisc-linux.org>
14  *    Copyright (C) 2000 Grant Grundler <grundler with parisc-linux.org>
15  *    Copyright (C) 2001 Alan Modra <amodra at parisc-linux.org>
16  *    Copyright (C) 2001-2002 Ryan Bradetich <rbrad at parisc-linux.org>
17  *    Copyright (C) 2001-2014 Helge Deller <deller@gmx.de>
18  *    Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
45 #include <asm/asm-offsets.h>
61 ** of kludging up all the code.
76 	 ** ftc_bitmap = 0x1AUL "Skip destructive memory tests"  in machine_restart()
86 	/* set up a new led state on systems shipped with a LED State panel */  in machine_restart()
106 	/* Put the soft power button back under hardware control.  in machine_power_off()
107 	 * If the user had already pressed the power button, the  in machine_power_off()
108 	 * following call will immediately power off. */  in machine_power_off()
116 	/* It seems we have no way to power the system off via  in machine_power_off()
119 	printk("Power off or press RETURN to reboot.\n");  in machine_power_off()
199  * Copy architecture-specific thread state
204 	unsigned long clone_flags = args->flags;  in copy_thread()
205 	unsigned long usp = args->stack;  in copy_thread()
206 	unsigned long tls = args->tls;  in copy_thread()
207 	struct pt_regs *cregs = &(p->thread.regs);  in copy_thread()
211 	 * function pointers aren't a pointer to the function on 64-bit.  in copy_thread()
216 	if (unlikely(args->fn)) {  in copy_thread()
219 		if (args->idle) /* idle thread */  in copy_thread()
224 		cregs->ksp = (unsigned long) stack + FRAME_SIZE + PT_SZ_ALGN;  in copy_thread()
225 		cregs->kpc = (unsigned long) &ret_from_kernel_thread;  in copy_thread()
231 		cregs->gr[27] = ((unsigned long *)args->fn)[3];  in copy_thread()
232 		cregs->gr[26] = ((unsigned long *)args->fn)[2];  in copy_thread()
234 		cregs->gr[26] = (unsigned long) args->fn;  in copy_thread()
236 		cregs->gr[25] = (unsigned long) args->fn_arg;  in copy_thread()
245 				cregs->gr[30] = usp;  in copy_thread()
247 		cregs->ksp = (unsigned long) stack + FRAME_SIZE;  in copy_thread()
248 		cregs->kpc = (unsigned long) &child_return;  in copy_thread()
252 			cregs->cr27 = tls;  in copy_thread()