mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 04:57:24 +07:00
cfcbadb49d
This will let us specify something like 'sys_xyz/foo' instead of 'sys_xyz' in the syscall table, where the 'foo' qualifier conveys some extra information to the C code. The intent is to allow things like sys_execve/ptregs to indicate that sys_execve() touches pt_regs. 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: Frederic Weisbecker <fweisbec@gmail.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> Link: http://lkml.kernel.org/r/2de06e33dce62556b3ec662006fcb295504e296e.1454022279.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/*
|
|
* System call table for UML/x86-64, 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
|
|
|
|
/*
|
|
* 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_execveat sys_execveat
|
|
#define stub_rt_sigreturn sys_rt_sigreturn
|
|
|
|
#define __SYSCALL_64(nr, sym, qual) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) ;
|
|
#include <asm/syscalls_64.h>
|
|
|
|
#undef __SYSCALL_64
|
|
#define __SYSCALL_64(nr, sym, qual) [ 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_64.h>
|
|
};
|
|
|
|
int syscall_table_size = sizeof(sys_call_table);
|