/arch/um/include/shared/as-layout.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 4 */
 5
 6#ifndef __START_H__
 7#define __START_H__
 8
 9#include <generated/asm-offsets.h>
10
11/*
12 * Stolen from linux/const.h, which can't be directly included since
13 * this is used in userspace code, which has no access to the kernel
14 * headers.  Changed to be suitable for adding casts to the start,
15 * rather than "UL" to the end.
16 */
17
18/* Some constant macros are used in both assembler and
19 * C code.  Therefore we cannot annotate them always with
20 * 'UL' and other type specifiers unilaterally.  We
21 * use the following macros to deal with this.
22 */
23
24#ifdef __ASSEMBLY__
25#define _UML_AC(X, Y)	(Y)
26#else
27#define __UML_AC(X, Y)	(X(Y))
28#define _UML_AC(X, Y)	__UML_AC(X, Y)
29#endif
30
31#define STUB_START _UML_AC(, 0x100000)
32#define STUB_CODE _UML_AC((unsigned long), STUB_START)
33#define STUB_DATA _UML_AC((unsigned long), STUB_CODE + UM_KERN_PAGE_SIZE)
34#define STUB_END _UML_AC((unsigned long), STUB_DATA + UM_KERN_PAGE_SIZE)
35
36#ifndef __ASSEMBLY__
37
38#include <sysdep/ptrace.h>
39
40struct cpu_task {
41	int pid;
42	void *task;
43};
44
45extern struct cpu_task cpu_tasks[];
46
47extern unsigned long high_physmem;
48extern unsigned long uml_physmem;
49extern unsigned long uml_reserved;
50extern unsigned long end_vm;
51extern unsigned long start_vm;
52extern unsigned long long highmem;
53
54extern unsigned long brk_start;
55
56extern unsigned long host_task_size;
57
58extern int linux_main(int argc, char **argv);
59extern void uml_finishsetup(void);
60
61struct siginfo;
62extern void (*sig_info[])(int, struct siginfo *si, struct uml_pt_regs *);
63
64#endif
65
66#endif