| /* |
| * 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 |