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/*
* Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
#ifndef __START_H__
#define __START_H__
#include "uml-config.h"
#include "kern_constants.h"
/*
* Stolen from linux/const.h, which can't be directly included since
* this is used in userspace code, which has no access to the kernel
* headers. Changed to be suitable for adding casts to the start,
* rather than "UL" to the end.
*/
/* Some constant macros are used in both assembler and
* C code. Therefore we cannot annotate them always with
* 'UL' and other type specifiers unilaterally. We
* use the following macros to deal with this.
*/
#ifdef __ASSEMBLY__
#define _AC(X, Y) (Y)
#else
#define __AC(X, Y) (X (Y))
#define _AC(X, Y) __AC(X, Y)
#endif
/*
* The "- 1"'s are to avoid gcc complaining about integer overflows
* and unrepresentable decimal constants. With 3-level page tables,
* TASK_SIZE is 0x80000000, which gets turned into its signed decimal
* equivalent in asm-offsets.s. gcc then complains about that being
* unsigned only in C90. To avoid that, UM_TASK_SIZE is defined as
* TASK_SIZE - 1. To compensate, we need to add the 1 back here.
* However, adding it back to UM_TASK_SIZE produces more gcc
* complaints. So, I adjust the thing being subtracted from
* UM_TASK_SIZE instead. Bah.
*/
#define STUB_CODE _AC((unsigned long), \
UM_TASK_SIZE - (2 * UM_KERN_PAGE_SIZE - 1))
#define STUB_DATA _AC((unsigned long), UM_TASK_SIZE - (UM_KERN_PAGE_SIZE - 1))
#define STUB_START _AC(, STUB_CODE)
#ifndef __ASSEMBLY__
#include "sysdep/ptrace.h"
struct cpu_task {
int pid;
void *task;
};
extern struct cpu_task cpu_tasks[];
extern unsigned long low_physmem;
extern unsigned long high_physmem;
extern unsigned long uml_physmem;
extern unsigned long uml_reserved;
extern unsigned long end_vm;
extern unsigned long start_vm;
extern unsigned long long highmem;
extern unsigned long _stext, _etext, _sdata, _edata, __bss_start, _end;
extern unsigned long _unprotected_end;
extern unsigned long brk_start;
extern int linux_main(int argc, char **argv);
extern void (*sig_info[])(int, struct uml_pt_regs *);
#endif
#endif
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