arch/um/include/as-layout.h

   1 /*
   2  * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #ifndef __START_H__
   7 #define __START_H__
   8
   9 #include "uml-config.h"
  10 #include "kern_constants.h"
  11
  12 /*
  13  * Stolen from linux/const.h, which can't be directly included since
  14  * this is used in userspace code, which has no access to the kernel
  15  * headers.  Changed to be suitable for adding casts to the start,
  16  * rather than "UL" to the end.
  17  */
  18
  19 /* Some constant macros are used in both assembler and
  20  * C code.  Therefore we cannot annotate them always with
  21  * 'UL' and other type specifiers unilaterally.  We
  22  * use the following macros to deal with this.
  23  */
  24
  25 #ifdef __ASSEMBLY__
  26 #define _UML_AC(X, Y)   (Y)
  27 #else
  28 #define __UML_AC(X, Y)  (X(Y))
  29 #define _UML_AC(X, Y)   __UML_AC(X, Y)
  30 #endif
  31
  32 #define STUB_START _UML_AC(, 0x100000)
  33 #define STUB_CODE _UML_AC((unsigned long), STUB_START)
  34 #define STUB_DATA _UML_AC((unsigned long), STUB_CODE + UM_KERN_PAGE_SIZE)
  35 #define STUB_END _UML_AC((unsigned long), STUB_DATA + UM_KERN_PAGE_SIZE)
  36
  37 #ifndef __ASSEMBLY__
  38
  39 #include "sysdep/ptrace.h"
  40
  41 struct cpu_task {
  42         int pid;
  43         void *task;
  44 };
  45
  46 extern struct cpu_task cpu_tasks[];
  47
  48 extern unsigned long low_physmem;
  49 extern unsigned long high_physmem;
  50 extern unsigned long uml_physmem;
  51 extern unsigned long uml_reserved;
  52 extern unsigned long end_vm;
  53 extern unsigned long start_vm;
  54 extern unsigned long long highmem;
  55
  56 extern unsigned long _stext, _etext, _sdata, _edata, __bss_start, _end;
  57 extern unsigned long _unprotected_end;
  58 extern unsigned long brk_start;
  59
  60 extern unsigned long host_task_size;
  61
  62 extern int linux_main(int argc, char **argv);
  63
  64 extern void (*sig_info[])(int, struct uml_pt_regs *);
  65
  66 #endif
  67
  68 #endif