1*08d0ce30SSami Tolvanen /* SPDX-License-Identifier: GPL-2.0 */ 2*08d0ce30SSami Tolvanen /* 3*08d0ce30SSami Tolvanen * syscall_wrapper.h - riscv specific wrappers to syscall definitions 4*08d0ce30SSami Tolvanen * 5*08d0ce30SSami Tolvanen * Based on arch/arm64/include/syscall_wrapper.h 6*08d0ce30SSami Tolvanen */ 7*08d0ce30SSami Tolvanen 8*08d0ce30SSami Tolvanen #ifndef __ASM_SYSCALL_WRAPPER_H 9*08d0ce30SSami Tolvanen #define __ASM_SYSCALL_WRAPPER_H 10*08d0ce30SSami Tolvanen 11*08d0ce30SSami Tolvanen #include <asm/ptrace.h> 12*08d0ce30SSami Tolvanen 13*08d0ce30SSami Tolvanen asmlinkage long __riscv_sys_ni_syscall(const struct pt_regs *); 14*08d0ce30SSami Tolvanen 15*08d0ce30SSami Tolvanen #define SC_RISCV_REGS_TO_ARGS(x, ...) \ 16*08d0ce30SSami Tolvanen __MAP(x,__SC_ARGS \ 17*08d0ce30SSami Tolvanen ,,regs->orig_a0,,regs->a1,,regs->a2 \ 18*08d0ce30SSami Tolvanen ,,regs->a3,,regs->a4,,regs->a5,,regs->a6) 19*08d0ce30SSami Tolvanen 20*08d0ce30SSami Tolvanen #ifdef CONFIG_COMPAT 21*08d0ce30SSami Tolvanen 22*08d0ce30SSami Tolvanen #define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ 23*08d0ce30SSami Tolvanen asmlinkage long __riscv_compat_sys##name(const struct pt_regs *regs); \ 24*08d0ce30SSami Tolvanen ALLOW_ERROR_INJECTION(__riscv_compat_sys##name, ERRNO); \ 25*08d0ce30SSami Tolvanen static long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ 26*08d0ce30SSami Tolvanen static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \ 27*08d0ce30SSami Tolvanen asmlinkage long __riscv_compat_sys##name(const struct pt_regs *regs) \ 28*08d0ce30SSami Tolvanen { \ 29*08d0ce30SSami Tolvanen return __se_compat_sys##name(SC_RISCV_REGS_TO_ARGS(x,__VA_ARGS__)); \ 30*08d0ce30SSami Tolvanen } \ 31*08d0ce30SSami Tolvanen static long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ 32*08d0ce30SSami Tolvanen { \ 33*08d0ce30SSami Tolvanen return __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \ 34*08d0ce30SSami Tolvanen } \ 35*08d0ce30SSami Tolvanen static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) 36*08d0ce30SSami Tolvanen 37*08d0ce30SSami Tolvanen #define COMPAT_SYSCALL_DEFINE0(sname) \ 38*08d0ce30SSami Tolvanen asmlinkage long __riscv_compat_sys_##sname(const struct pt_regs *__unused); \ 39*08d0ce30SSami Tolvanen ALLOW_ERROR_INJECTION(__riscv_compat_sys_##sname, ERRNO); \ 40*08d0ce30SSami Tolvanen asmlinkage long __riscv_compat_sys_##sname(const struct pt_regs *__unused) 41*08d0ce30SSami Tolvanen 42*08d0ce30SSami Tolvanen #define COND_SYSCALL_COMPAT(name) \ 43*08d0ce30SSami Tolvanen asmlinkage long __weak __riscv_compat_sys_##name(const struct pt_regs *regs); \ 44*08d0ce30SSami Tolvanen asmlinkage long __weak __riscv_compat_sys_##name(const struct pt_regs *regs) \ 45*08d0ce30SSami Tolvanen { \ 46*08d0ce30SSami Tolvanen return sys_ni_syscall(); \ 47*08d0ce30SSami Tolvanen } 48*08d0ce30SSami Tolvanen 49*08d0ce30SSami Tolvanen #endif /* CONFIG_COMPAT */ 50*08d0ce30SSami Tolvanen 51*08d0ce30SSami Tolvanen #define __SYSCALL_DEFINEx(x, name, ...) \ 52*08d0ce30SSami Tolvanen asmlinkage long __riscv_sys##name(const struct pt_regs *regs); \ 53*08d0ce30SSami Tolvanen ALLOW_ERROR_INJECTION(__riscv_sys##name, ERRNO); \ 54*08d0ce30SSami Tolvanen static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ 55*08d0ce30SSami Tolvanen static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \ 56*08d0ce30SSami Tolvanen asmlinkage long __riscv_sys##name(const struct pt_regs *regs) \ 57*08d0ce30SSami Tolvanen { \ 58*08d0ce30SSami Tolvanen return __se_sys##name(SC_RISCV_REGS_TO_ARGS(x,__VA_ARGS__)); \ 59*08d0ce30SSami Tolvanen } \ 60*08d0ce30SSami Tolvanen static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ 61*08d0ce30SSami Tolvanen { \ 62*08d0ce30SSami Tolvanen long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \ 63*08d0ce30SSami Tolvanen __MAP(x,__SC_TEST,__VA_ARGS__); \ 64*08d0ce30SSami Tolvanen __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \ 65*08d0ce30SSami Tolvanen return ret; \ 66*08d0ce30SSami Tolvanen } \ 67*08d0ce30SSami Tolvanen static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) 68*08d0ce30SSami Tolvanen 69*08d0ce30SSami Tolvanen #define SYSCALL_DEFINE0(sname) \ 70*08d0ce30SSami Tolvanen SYSCALL_METADATA(_##sname, 0); \ 71*08d0ce30SSami Tolvanen asmlinkage long __riscv_sys_##sname(const struct pt_regs *__unused); \ 72*08d0ce30SSami Tolvanen ALLOW_ERROR_INJECTION(__riscv_sys_##sname, ERRNO); \ 73*08d0ce30SSami Tolvanen asmlinkage long __riscv_sys_##sname(const struct pt_regs *__unused) 74*08d0ce30SSami Tolvanen 75*08d0ce30SSami Tolvanen #define COND_SYSCALL(name) \ 76*08d0ce30SSami Tolvanen asmlinkage long __weak __riscv_sys_##name(const struct pt_regs *regs); \ 77*08d0ce30SSami Tolvanen asmlinkage long __weak __riscv_sys_##name(const struct pt_regs *regs) \ 78*08d0ce30SSami Tolvanen { \ 79*08d0ce30SSami Tolvanen return sys_ni_syscall(); \ 80*08d0ce30SSami Tolvanen } 81*08d0ce30SSami Tolvanen 82*08d0ce30SSami Tolvanen #endif /* __ASM_SYSCALL_WRAPPER_H */ 83