mirror of
https://github.com/torvalds/linux
synced 2024-09-23 21:07:52 +00:00
eb974c6256
Syscalls are asmlinkage functions (on 32-bit kernels), take six args of type unsigned long, and return long. Note that uml could probably be slightly cleaned up on top of this patch. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Link: http://lkml.kernel.org/r/4d3ecc4a169388d47009175408b2961961744e6f.1444091585.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/*
|
|
* System call table for UML/i386, copied from arch/x86/kernel/syscall_*.c
|
|
* with some changes for UML.
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/sys.h>
|
|
#include <linux/cache.h>
|
|
#include <generated/user_constants.h>
|
|
#include <asm/syscall.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 sys_iopl sys_ni_syscall
|
|
#define sys_ioperm sys_ni_syscall
|
|
|
|
#define sys_vm86old sys_ni_syscall
|
|
#define sys_vm86 sys_ni_syscall
|
|
|
|
#define old_mmap sys_old_mmap
|
|
|
|
#define __SYSCALL_I386(nr, sym, compat) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) ;
|
|
#include <asm/syscalls_32.h>
|
|
|
|
#undef __SYSCALL_I386
|
|
#define __SYSCALL_I386(nr, sym, compat) [ nr ] = sym,
|
|
|
|
extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
|
|
|
|
const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
|
|
/*
|
|
* Smells like a compiler bug -- it doesn't work
|
|
* when the & below is removed.
|
|
*/
|
|
[0 ... __NR_syscall_max] = &sys_ni_syscall,
|
|
#include <asm/syscalls_32.h>
|
|
};
|
|
|
|
int syscall_table_size = sizeof(sys_call_table);
|