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/* SPDX-License-Identifier: GPL-2.0 */
/*
* syscall_wrapper.h - arm64 specific wrappers to syscall definitions
*
* Based on arch/x86/include/asm_syscall_wrapper.h
*/
#ifndef __ASM_SYSCALL_WRAPPER_H
#define __ASM_SYSCALL_WRAPPER_H
#include <asm/ptrace.h>
#define SC_ARM64_REGS_TO_ARGS(x, ...) \
__MAP(x,__SC_ARGS \
,,regs->regs[0],,regs->regs[1],,regs->regs[2] \
,,regs->regs[3],,regs->regs[4],,regs->regs[5])
#ifdef CONFIG_COMPAT
#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
asmlinkage long __arm64_compat_sys##name(const struct pt_regs *regs); \
ALLOW_ERROR_INJECTION(__arm64_compat_sys##name, ERRNO); \
static long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
asmlinkage long __arm64_compat_sys##name(const struct pt_regs *regs) \
{ \
return __se_compat_sys##name(SC_ARM64_REGS_TO_ARGS(x,__VA_ARGS__)); \
} \
static long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
{ \
return __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \
} \
static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
#define COMPAT_SYSCALL_DEFINE0(sname) \
asmlinkage long __arm64_compat_sys_##sname(const struct pt_regs *__unused); \
ALLOW_ERROR_INJECTION(__arm64_compat_sys_##sname, ERRNO); \
asmlinkage long __arm64_compat_sys_##sname(const struct pt_regs *__unused)
#define COND_SYSCALL_COMPAT(name) \
asmlinkage long __arm64_compat_sys_##name(const struct pt_regs *regs); \
asmlinkage long __weak __arm64_compat_sys_##name(const struct pt_regs *regs) \
{ \
return sys_ni_syscall(); \
}
#endif /* CONFIG_COMPAT */
#define __SYSCALL_DEFINEx(x, name, ...) \
asmlinkage long __arm64_sys##name(const struct pt_regs *regs); \
ALLOW_ERROR_INJECTION(__arm64_sys##name, ERRNO); \
static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
asmlinkage long __arm64_sys##name(const struct pt_regs *regs) \
{ \
return __se_sys##name(SC_ARM64_REGS_TO_ARGS(x,__VA_ARGS__)); \
} \
static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
{ \
long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \
__MAP(x,__SC_TEST,__VA_ARGS__); \
__PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \
return ret; \
} \
static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
#define SYSCALL_DEFINE0(sname) \
SYSCALL_METADATA(_##sname, 0); \
asmlinkage long __arm64_sys_##sname(const struct pt_regs *__unused); \
ALLOW_ERROR_INJECTION(__arm64_sys_##sname, ERRNO); \
asmlinkage long __arm64_sys_##sname(const struct pt_regs *__unused)
#define COND_SYSCALL(name) \
asmlinkage long __arm64_sys_##name(const struct pt_regs *regs); \
asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs) \
{ \
return sys_ni_syscall(); \
}
asmlinkage long __arm64_sys_ni_syscall(const struct pt_regs *__unused);
#endif /* __ASM_SYSCALL_WRAPPER_H */