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59 lines
1.7 KiB
59 lines
1.7 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* System call table for UML/x86-64, copied from arch/x86/kernel/syscall_*.c |
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* with some changes for UML. |
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*/ |
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#include <linux/linkage.h> |
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#include <linux/sys.h> |
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#include <linux/cache.h> |
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#include <asm/unistd.h> |
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#include <asm/syscall.h> |
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#define __NO_STUBS |
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/* |
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* Below you can see, in terms of #define's, the differences between the x86-64 |
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* and the UML syscall table. |
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*/ |
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/* Not going to be implemented by UML, since we have no hardware. */ |
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#define sys_iopl sys_ni_syscall |
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#define sys_ioperm sys_ni_syscall |
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/* |
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* The UML TLS problem. Note that x86_64 does not implement this, so the below |
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* is needed only for the ia32 compatibility. |
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*/ |
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/* On UML we call it this way ("old" means it's not mmap2) */ |
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#define sys_mmap old_mmap |
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#define stub_clone sys_clone |
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#define stub_fork sys_fork |
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#define stub_vfork sys_vfork |
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#define stub_execve sys_execve |
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#define stub_execveat sys_execveat |
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#define stub_rt_sigreturn sys_rt_sigreturn |
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#define __SYSCALL_X32(nr, sym) |
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#define __SYSCALL_COMMON(nr, sym) __SYSCALL_64(nr, sym) |
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#define __SYSCALL_64(nr, sym) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) ; |
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#include <asm/syscalls_64.h> |
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#undef __SYSCALL_64 |
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#define __SYSCALL_64(nr, sym) [ nr ] = sym, |
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extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); |
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const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = { |
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/* |
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* Smells like a compiler bug -- it doesn't work |
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* when the & below is removed. |
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*/ |
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[0 ... __NR_syscall_max] = &sys_ni_syscall, |
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#include <asm/syscalls_64.h> |
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}; |
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int syscall_table_size = sizeof(sys_call_table);
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