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
  40 struct cpu_task {
  41         int pid;
  42         void *task;
  43 };
  44
  45 extern struct cpu_task cpu_tasks[];
  46
  47 extern unsigned long high_physmem;
  48 extern unsigned long uml_physmem;
  49 extern unsigned long uml_reserved;
  50 extern unsigned long end_vm;
  51 extern unsigned long start_vm;
  52 extern unsigned long long highmem;
  53
  54 extern unsigned long brk_start;
  55
  56 extern unsigned long host_task_size;
  57
  58 extern int linux_main(int argc, char **argv);
  59 extern void uml_finishsetup(void);
  60
  61 struct siginfo;
  62 extern void (*sig_info[])(int, struct siginfo *si, struct uml_pt_regs *);
  63
  64 #endif
  65
  66 #endif