| 1 |
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| 2 | |
| 3 | * syscall_wrapper.h - powerpc specific wrappers to syscall definitions
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| 4 | *
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| 5 | * Based on arch/{x86,arm64}/include/asm/syscall_wrapper.h
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| 6 |
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| 7 |
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| 8 | #ifndef __ASM_POWERPC_SYSCALL_WRAPPER_H
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| 9 | #define __ASM_POWERPC_SYSCALL_WRAPPER_H
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| 10 |
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| 11 | struct pt_regs;
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| 12 |
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| 13 | #define SC_POWERPC_REGS_TO_ARGS(x, ...) \
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| 14 | __MAP(x,__SC_ARGS \
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| 15 | ,,regs->gpr[3],,regs->gpr[4],,regs->gpr[5] \
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| 16 | ,,regs->gpr[6],,regs->gpr[7],,regs->gpr[8])
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| 17 |
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| 18 | #define __SYSCALL_DEFINEx(x, name, ...) \
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| 19 | long sys##name(const struct pt_regs *regs); \
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| 20 | ALLOW_ERROR_INJECTION(sys##name, ERRNO); \
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| 21 | static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
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| 22 | static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
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| 23 | long sys##name(const struct pt_regs *regs) \
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| 24 | { \
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| 25 | return __se_sys##name(SC_POWERPC_REGS_TO_ARGS(x,__VA_ARGS__)); \
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| 26 | } \
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| 27 | static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
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| 28 | { \
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| 29 | long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \
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| 30 | __MAP(x,__SC_TEST,__VA_ARGS__); \
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| 31 | __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \
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| 32 | return ret; \
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| 33 | } \
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| 34 | static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
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| 35 |
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| 36 | #define SYSCALL_DEFINE0(sname) \
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| 37 | SYSCALL_METADATA(_##sname, 0); \
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| 38 | long sys_##sname(const struct pt_regs *__unused); \
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| 39 | ALLOW_ERROR_INJECTION(sys_##sname, ERRNO); \
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| 40 | long sys_##sname(const struct pt_regs *__unused)
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| 41 |
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| 42 | #define COND_SYSCALL(name) \
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| 43 | long sys_##name(const struct pt_regs *regs); \
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| 44 | long __weak sys_##name(const struct pt_regs *regs) \
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| 45 | { \
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| 46 | return sys_ni_syscall(); \
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| 47 | }
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| 48 |
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| 49 | #endif |