88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2001 - 2007 Tensilica Inc.
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* Copyright (C) 2018 Cadence Design Systems Inc.
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*/
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#ifndef _ASM_SYSCALL_H
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#define _ASM_SYSCALL_H
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#include <linux/err.h>
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#include <asm/ptrace.h>
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#include <uapi/linux/audit.h>
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static inline int syscall_get_arch(struct task_struct *task)
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{
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return AUDIT_ARCH_XTENSA;
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}
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typedef void (*syscall_t)(void);
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extern syscall_t sys_call_table[];
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static inline long syscall_get_nr(struct task_struct *task,
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struct pt_regs *regs)
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{
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return regs->syscall;
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}
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static inline void syscall_rollback(struct task_struct *task,
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struct pt_regs *regs)
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{
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/* Do nothing. */
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}
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static inline long syscall_get_error(struct task_struct *task,
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struct pt_regs *regs)
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{
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/* 0 if syscall succeeded, otherwise -Errorcode */
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return IS_ERR_VALUE(regs->areg[2]) ? regs->areg[2] : 0;
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}
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static inline long syscall_get_return_value(struct task_struct *task,
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struct pt_regs *regs)
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{
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return regs->areg[2];
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}
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static inline void syscall_set_return_value(struct task_struct *task,
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struct pt_regs *regs,
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int error, long val)
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{
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regs->areg[2] = (long) error ? error : val;
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}
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#define SYSCALL_MAX_ARGS 6
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#define XTENSA_SYSCALL_ARGUMENT_REGS {6, 3, 4, 5, 8, 9}
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static inline void syscall_get_arguments(struct task_struct *task,
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struct pt_regs *regs,
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unsigned long *args)
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{
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static const unsigned int reg[] = XTENSA_SYSCALL_ARGUMENT_REGS;
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unsigned int i;
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for (i = 0; i < 6; ++i)
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args[i] = regs->areg[reg[i]];
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}
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static inline void syscall_set_arguments(struct task_struct *task,
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struct pt_regs *regs,
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const unsigned long *args)
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{
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static const unsigned int reg[] = XTENSA_SYSCALL_ARGUMENT_REGS;
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unsigned int i;
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for (i = 0; i < 6; ++i)
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regs->areg[reg[i]] = args[i];
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}
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asmlinkage long xtensa_rt_sigreturn(struct pt_regs*);
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asmlinkage long xtensa_shmat(int, char __user *, int);
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asmlinkage long xtensa_fadvise64_64(int, int,
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unsigned long long, unsigned long long);
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#endif
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