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f8781c4a22
Removing CONFIG_SYSCALL_PTREGS from arch/x86/Kconfig and simply selecting ARCH_HAS_SYSCALL_WRAPPER unconditionally on x86-64 allows us to simplify several codepaths. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> 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: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20180405095307.3730-7-linux@dominikbrodowski.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* System call table for i386. */
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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/asm-offsets.h>
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#include <asm/syscall.h>
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#ifdef CONFIG_IA32_EMULATION
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/* On X86_64, we use struct pt_regs * to pass parameters to syscalls */
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#define __SYSCALL_I386(nr, sym, qual) extern asmlinkage long sym(const struct pt_regs *);
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/* this is a lie, but it does not hurt as sys_ni_syscall just returns -EINVAL */
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extern asmlinkage long sys_ni_syscall(const struct pt_regs *);
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#else /* CONFIG_IA32_EMULATION */
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#define __SYSCALL_I386(nr, sym, qual) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
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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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#endif /* CONFIG_IA32_EMULATION */
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#include <asm/syscalls_32.h>
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#undef __SYSCALL_I386
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#define __SYSCALL_I386(nr, sym, qual) [nr] = sym,
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__visible const sys_call_ptr_t ia32_sys_call_table[__NR_syscall_compat_max+1] = {
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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_compat_max] = &sys_ni_syscall,
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#include <asm/syscalls_32.h>
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};
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