projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 80f95078 PBG |
1 | /* System call table for UML/x86-64, copied from arch/x86_64/kernel/syscall.c |
| 2 | * with some changes for UML. */ | |
| 3 | ||
| 4 | #include <linux/linkage.h> | |
| 5 | #include <linux/sys.h> | |
| 6 | #include <linux/cache.h> | |
| ecec5ba6 | 7 | #include <kern_constants.h> |
| 80f95078 PBG |
8 | |
| 9 | #define __NO_STUBS | |
| 10 | ||
| 11 | /* Below you can see, in terms of #define's, the differences between the x86-64 | |
| 12 | * and the UML syscall table. */ | |
| 13 | ||
| 14 | /* Not going to be implemented by UML, since we have no hardware. */ | |
| 15 | #define stub_iopl sys_ni_syscall | |
| 16 | #define sys_ioperm sys_ni_syscall | |
| 17 | ||
| 18 | /* The UML TLS problem. Note that x86_64 does not implement this, so the below | |
| 19 | * is needed only for the ia32 compatibility. */ | |
| 20 | /*#define sys_set_thread_area sys_ni_syscall | |
| 21 | #define sys_get_thread_area sys_ni_syscall*/ | |
| 22 | ||
| 80f95078 PBG |
23 | /* On UML we call it this way ("old" means it's not mmap2) */ |
| 24 | #define sys_mmap old_mmap | |
| 25 | /* On x86-64 sys_uname is actually sys_newuname plus a compatibility trick. | |
| 26 | * See arch/x86_64/kernel/sys_x86_64.c */ | |
| 27 | #define sys_uname sys_uname64 | |
| 28 | ||
| 29 | #define stub_clone sys_clone | |
| 30 | #define stub_fork sys_fork | |
| 31 | #define stub_vfork sys_vfork | |
| 32 | #define stub_execve sys_execve | |
| 33 | #define stub_rt_sigsuspend sys_rt_sigsuspend | |
| 34 | #define stub_sigaltstack sys_sigaltstack | |
| 35 | #define stub_rt_sigreturn sys_rt_sigreturn | |
| 36 | ||
| 37 | #define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ; | |
| 38 | #undef _ASM_X86_64_UNISTD_H_ | |
| 96a388de | 39 | #include <asm-x86/unistd_64.h> |
| 80f95078 PBG |
40 | |
| 41 | #undef __SYSCALL | |
| 42 | #define __SYSCALL(nr, sym) [ nr ] = sym, | |
| 43 | #undef _ASM_X86_64_UNISTD_H_ | |
| 44 | ||
| 45 | typedef void (*sys_call_ptr_t)(void); | |
| 46 | ||
| 47 | extern void sys_ni_syscall(void); | |
| 48 | ||
| ecec5ba6 | 49 | sys_call_ptr_t sys_call_table[UM_NR_syscall_max+1] __cacheline_aligned = { |
| 80f95078 | 50 | /* Smells like a like a compiler bug -- it doesn't work when the & below is removed. */ |
| ecec5ba6 | 51 | [0 ... UM_NR_syscall_max] = &sys_ni_syscall, |
| 96a388de | 52 | #include <asm-x86/unistd_64.h> |
| 80f95078 | 53 | }; |