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66 lines
1.3 KiB
66 lines
1.3 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright Altera Corporation (C) <2014>. All rights reserved |
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*/ |
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#ifndef __ASM_NIOS2_SYSCALL_H__ |
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#define __ASM_NIOS2_SYSCALL_H__ |
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#include <uapi/linux/audit.h> |
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#include <linux/err.h> |
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#include <linux/sched.h> |
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static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs) |
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{ |
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return regs->r2; |
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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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regs->r2 = regs->orig_r2; |
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regs->r7 = regs->orig_r7; |
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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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return regs->r7 ? regs->r2 : 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->r2; |
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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, int error, long val) |
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{ |
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if (error) { |
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/* error < 0, but nios2 uses > 0 return value */ |
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regs->r2 = -error; |
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regs->r7 = 1; |
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} else { |
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regs->r2 = val; |
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regs->r7 = 0; |
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} |
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} |
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static inline void syscall_get_arguments(struct task_struct *task, |
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struct pt_regs *regs, unsigned long *args) |
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{ |
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*args++ = regs->r4; |
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*args++ = regs->r5; |
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*args++ = regs->r6; |
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*args++ = regs->r7; |
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*args++ = regs->r8; |
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*args = regs->r9; |
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} |
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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_NIOS2; |
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} |
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#endif
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