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x86/entry: Refactor SYS_NI macros
Pull the common code out from the SYS_NI macros into a new __SYS_NI macro. Also conditionalize the X64 version in preparation for enabling syscall wrappers on 32-bit native kernels. 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/20200313195144.164260-5-brgerst@gmail.com
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@ -42,6 +42,9 @@ struct pt_regs;
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return sys_ni_syscall(); \
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}
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#define __SYS_NI(abi, name) \
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SYSCALL_ALIAS(__##abi##_##name, sys_ni_posix_timers)
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#ifdef CONFIG_X86_64
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#define __X64_SYS_STUB0(name) \
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__SYS_STUB0(x64, sys_##name)
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@ -52,10 +55,14 @@ struct pt_regs;
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#define __X64_COND_SYSCALL(name) \
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__COND_SYSCALL(x64, sys_##name)
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#define __X64_SYS_NI(name) \
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__SYS_NI(x64, sys_##name)
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#else /* CONFIG_X86_64 */
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#define __X64_SYS_STUB0(name)
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#define __X64_SYS_STUBx(x, name, ...)
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#define __X64_COND_SYSCALL(name)
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#define __X64_SYS_NI(name)
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#endif /* CONFIG_X86_64 */
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#ifdef CONFIG_IA32_EMULATION
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@ -77,6 +84,9 @@ struct pt_regs;
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#define __IA32_COMPAT_COND_SYSCALL(name) \
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__COND_SYSCALL(ia32, compat_sys_##name)
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#define __IA32_COMPAT_SYS_NI(name) \
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__SYS_NI(ia32, compat_sys_##name)
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#define __IA32_SYS_STUB0(name) \
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__SYS_STUB0(ia32, sys_##name)
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@ -87,17 +97,17 @@ struct pt_regs;
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#define __IA32_COND_SYSCALL(name) \
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__COND_SYSCALL(ia32, sys_##name)
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#define SYS_NI(name) \
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SYSCALL_ALIAS(__x64_sys_##name, sys_ni_posix_timers); \
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SYSCALL_ALIAS(__ia32_sys_##name, sys_ni_posix_timers)
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#define __IA32_SYS_NI(name) \
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__SYS_NI(ia32, sys_##name)
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#else /* CONFIG_IA32_EMULATION */
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#define __IA32_COMPAT_SYS_STUB0(name)
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#define __IA32_COMPAT_SYS_STUBx(x, name, ...)
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#define __IA32_COMPAT_COND_SYSCALL(name)
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#define __IA32_COMPAT_SYS_NI(name)
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#define __IA32_SYS_STUB0(name)
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#define __IA32_SYS_STUBx(x, name, ...)
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#define __IA32_COND_SYSCALL(name)
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#define __IA32_SYS_NI(name)
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#endif /* CONFIG_IA32_EMULATION */
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@ -116,10 +126,14 @@ struct pt_regs;
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#define __X32_COMPAT_COND_SYSCALL(name) \
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__COND_SYSCALL(x32, compat_sys_##name)
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#define __X32_COMPAT_SYS_NI(name) \
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__SYS_NI(x32, compat_sys_##name)
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#else /* CONFIG_X86_X32 */
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#define __X32_COMPAT_SYS_STUB0(name)
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#define __X32_COMPAT_SYS_STUBx(x, name, ...)
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#define __X32_COMPAT_COND_SYSCALL(name)
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#define __X32_COMPAT_SYS_NI(name)
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#endif /* CONFIG_X86_X32 */
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@ -158,8 +172,8 @@ struct pt_regs;
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__X32_COMPAT_COND_SYSCALL(name)
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#define COMPAT_SYS_NI(name) \
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SYSCALL_ALIAS(__ia32_compat_sys_##name, sys_ni_posix_timers); \
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SYSCALL_ALIAS(__x32_compat_sys_##name, sys_ni_posix_timers)
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__IA32_COMPAT_SYS_NI(name) \
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__X32_COMPAT_SYS_NI(name)
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#endif /* CONFIG_COMPAT */
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@ -231,9 +245,9 @@ struct pt_regs;
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__X64_COND_SYSCALL(name) \
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__IA32_COND_SYSCALL(name)
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#ifndef SYS_NI
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#define SYS_NI(name) SYSCALL_ALIAS(__x64_sys_##name, sys_ni_posix_timers);
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#endif
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#define SYS_NI(name) \
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__X64_SYS_NI(name) \
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__IA32_SYS_NI(name)
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/*
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