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0f78ff1711
asmlinkage is no longer required since the syscall ABI is now fully under x86 architecture control. This makes the 32-bit native syscalls a bit more effecient by passing in regs via EAX instead of on the stack. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net> Reviewed-by: Andy Lutomirski <luto@kernel.org> Link: https://lkml.kernel.org/r/20200313195144.164260-18-brgerst@gmail.com
30 lines
860 B
C
30 lines
860 B
C
// SPDX-License-Identifier: GPL-2.0
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/* System call table for x32 ABI. */
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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 <linux/syscalls.h>
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#include <asm/unistd.h>
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#include <asm/syscall.h>
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#define __SYSCALL_64(nr, sym)
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#define __SYSCALL_X32(nr, sym) extern long __x32_##sym(const struct pt_regs *);
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#define __SYSCALL_COMMON(nr, sym) extern long __x64_##sym(const struct pt_regs *);
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#include <asm/syscalls_64.h>
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#undef __SYSCALL_X32
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#undef __SYSCALL_COMMON
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#define __SYSCALL_X32(nr, sym) [nr] = __x32_##sym,
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#define __SYSCALL_COMMON(nr, sym) [nr] = __x64_##sym,
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asmlinkage const sys_call_ptr_t x32_sys_call_table[__NR_x32_syscall_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_x32_syscall_max] = &__x64_sys_ni_syscall,
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#include <asm/syscalls_64.h>
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};
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