1 /* 1 2 * This file is subject to the terms and condi 3 * License. See the file "COPYING" in the mai 4 * for more details. 5 * 6 * Copyright (C) 2001 - 2007 Tensilica Inc. 7 * Copyright (C) 2018 Cadence Design Systems I 8 */ 9 10 #ifndef _ASM_SYSCALL_H 11 #define _ASM_SYSCALL_H 12 13 #include <linux/err.h> 14 #include <asm/ptrace.h> 15 #include <uapi/linux/audit.h> 16 17 static inline int syscall_get_arch(struct task 18 { 19 return AUDIT_ARCH_XTENSA; 20 } 21 22 typedef void (*syscall_t)(void); 23 extern syscall_t sys_call_table[]; 24 25 static inline long syscall_get_nr(struct task_ 26 struct pt_re 27 { 28 return regs->syscall; 29 } 30 31 static inline void syscall_rollback(struct tas 32 struct pt_ 33 { 34 /* Do nothing. */ 35 } 36 37 static inline long syscall_get_error(struct ta 38 struct pt 39 { 40 /* 0 if syscall succeeded, otherwise - 41 return IS_ERR_VALUE(regs->areg[2]) ? r 42 } 43 44 static inline long syscall_get_return_value(st 45 st 46 { 47 return regs->areg[2]; 48 } 49 50 static inline void syscall_set_return_value(st 51 st 52 in 53 { 54 regs->areg[2] = (long) error ? error : 55 } 56 57 #define SYSCALL_MAX_ARGS 6 58 #define XTENSA_SYSCALL_ARGUMENT_REGS {6, 3, 4, 59 60 static inline void syscall_get_arguments(struc 61 struc 62 unsig 63 { 64 static const unsigned int reg[] = XTEN 65 unsigned int i; 66 67 for (i = 0; i < 6; ++i) 68 args[i] = regs->areg[reg[i]]; 69 } 70 71 asmlinkage long xtensa_rt_sigreturn(void); 72 asmlinkage long xtensa_shmat(int, char __user 73 asmlinkage long xtensa_fadvise64_64(int, int, 74 unsigned l 75 76 #endif 77
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