cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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syscall_wrapper.h (3112B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * syscall_wrapper.h - arm64 specific wrappers to syscall definitions
      4 *
      5 * Based on arch/x86/include/asm_syscall_wrapper.h
      6 */
      7
      8#ifndef __ASM_SYSCALL_WRAPPER_H
      9#define __ASM_SYSCALL_WRAPPER_H
     10
     11struct pt_regs;
     12
     13#define SC_ARM64_REGS_TO_ARGS(x, ...)				\
     14	__MAP(x,__SC_ARGS					\
     15	      ,,regs->regs[0],,regs->regs[1],,regs->regs[2]	\
     16	      ,,regs->regs[3],,regs->regs[4],,regs->regs[5])
     17
     18#ifdef CONFIG_COMPAT
     19
     20#define COMPAT_SYSCALL_DEFINEx(x, name, ...)						\
     21	asmlinkage long __arm64_compat_sys##name(const struct pt_regs *regs);		\
     22	ALLOW_ERROR_INJECTION(__arm64_compat_sys##name, ERRNO);				\
     23	static long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__));		\
     24	static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));	\
     25	asmlinkage long __arm64_compat_sys##name(const struct pt_regs *regs)		\
     26	{										\
     27		return __se_compat_sys##name(SC_ARM64_REGS_TO_ARGS(x,__VA_ARGS__));	\
     28	}										\
     29	static long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__))		\
     30	{										\
     31		return __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));	\
     32	}										\
     33	static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
     34
     35#define COMPAT_SYSCALL_DEFINE0(sname)							\
     36	asmlinkage long __arm64_compat_sys_##sname(const struct pt_regs *__unused);	\
     37	ALLOW_ERROR_INJECTION(__arm64_compat_sys_##sname, ERRNO);			\
     38	asmlinkage long __arm64_compat_sys_##sname(const struct pt_regs *__unused)
     39
     40#define COND_SYSCALL_COMPAT(name) 							\
     41	asmlinkage long __weak __arm64_compat_sys_##name(const struct pt_regs *regs)	\
     42	{										\
     43		return sys_ni_syscall();						\
     44	}
     45
     46#define COMPAT_SYS_NI(name) \
     47	SYSCALL_ALIAS(__arm64_compat_sys_##name, sys_ni_posix_timers);
     48
     49#endif /* CONFIG_COMPAT */
     50
     51#define __SYSCALL_DEFINEx(x, name, ...)						\
     52	asmlinkage long __arm64_sys##name(const struct pt_regs *regs);		\
     53	ALLOW_ERROR_INJECTION(__arm64_sys##name, ERRNO);			\
     54	static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__));		\
     55	static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));	\
     56	asmlinkage long __arm64_sys##name(const struct pt_regs *regs)		\
     57	{									\
     58		return __se_sys##name(SC_ARM64_REGS_TO_ARGS(x,__VA_ARGS__));	\
     59	}									\
     60	static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__))		\
     61	{									\
     62		long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));	\
     63		__MAP(x,__SC_TEST,__VA_ARGS__);					\
     64		__PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__));		\
     65		return ret;							\
     66	}									\
     67	static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
     68
     69#define SYSCALL_DEFINE0(sname)							\
     70	SYSCALL_METADATA(_##sname, 0);						\
     71	asmlinkage long __arm64_sys_##sname(const struct pt_regs *__unused);	\
     72	ALLOW_ERROR_INJECTION(__arm64_sys_##sname, ERRNO);			\
     73	asmlinkage long __arm64_sys_##sname(const struct pt_regs *__unused)
     74
     75#define COND_SYSCALL(name)							\
     76	asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)	\
     77	{									\
     78		return sys_ni_syscall();					\
     79	}
     80
     81#define SYS_NI(name) SYSCALL_ALIAS(__arm64_sys_##name, sys_ni_posix_timers);
     82
     83#endif /* __ASM_SYSCALL_WRAPPER_H */