You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
1.8 KiB
65 lines
1.8 KiB
/*
|
|
* System call table for UML/x86-64, copied from arch/x86_64/kernel/syscall.c
|
|
* with some changes for UML.
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/sys.h>
|
|
#include <linux/cache.h>
|
|
#include <kern_constants.h>
|
|
|
|
#define __NO_STUBS
|
|
|
|
/*
|
|
* Below you can see, in terms of #define's, the differences between the x86-64
|
|
* and the UML syscall table.
|
|
*/
|
|
|
|
/* Not going to be implemented by UML, since we have no hardware. */
|
|
#define stub_iopl sys_ni_syscall
|
|
#define sys_ioperm sys_ni_syscall
|
|
|
|
/*
|
|
* The UML TLS problem. Note that x86_64 does not implement this, so the below
|
|
* is needed only for the ia32 compatibility.
|
|
*/
|
|
|
|
/* On UML we call it this way ("old" means it's not mmap2) */
|
|
#define sys_mmap old_mmap
|
|
|
|
#define stub_clone sys_clone
|
|
#define stub_fork sys_fork
|
|
#define stub_vfork sys_vfork
|
|
#define stub_execve sys_execve
|
|
#define stub_rt_sigsuspend sys_rt_sigsuspend
|
|
#define stub_sigaltstack sys_sigaltstack
|
|
#define stub_rt_sigreturn sys_rt_sigreturn
|
|
|
|
#define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ;
|
|
#undef _ASM_X86_UNISTD_64_H
|
|
#include "../../x86/include/asm/unistd_64.h"
|
|
|
|
#undef __SYSCALL
|
|
#define __SYSCALL(nr, sym) [ nr ] = sym,
|
|
#undef _ASM_X86_UNISTD_64_H
|
|
|
|
typedef void (*sys_call_ptr_t)(void);
|
|
|
|
extern void sys_ni_syscall(void);
|
|
|
|
/*
|
|
* We used to have a trick here which made sure that holes in the
|
|
* x86_64 table were filled in with sys_ni_syscall, but a comment in
|
|
* unistd_64.h says that holes aren't allowed, so the trick was
|
|
* removed.
|
|
* The trick looked like this
|
|
* [0 ... UM_NR_syscall_max] = &sys_ni_syscall
|
|
* before including unistd_64.h - the later initializations overwrote
|
|
* the sys_ni_syscall filler.
|
|
*/
|
|
|
|
sys_call_ptr_t sys_call_table[] __cacheline_aligned = {
|
|
#include "../../x86/include/asm/unistd_64.h"
|
|
};
|
|
|
|
int syscall_table_size = sizeof(sys_call_table);
|
|
|