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| 2 | |
| 3 | * Copyright Altera Corporation (C) <2014>. All rights reserved
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| 4 |
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| 5 |
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| 6 | #ifndef __ASM_NIOS2_SYSCALL_H__
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| 7 | #define __ASM_NIOS2_SYSCALL_H__
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| 8 |
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| 9 | #include <uapi/linux/audit.h>
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| 10 | #include <linux/err.h>
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| 11 | #include <linux/sched.h>
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| 12 |
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| 13 | static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
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| 14 | {
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| 15 | return regs->r2;
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| 16 | }
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| 17 |
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| 18 | static inline void syscall_set_nr(struct task_struct *task, struct pt_regs *regs, int nr)
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| 19 | {
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| 20 | regs->r2 = nr;
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| 21 | }
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| 22 |
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| 23 | static inline void syscall_rollback(struct task_struct *task,
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| 24 | struct pt_regs *regs)
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| 25 | {
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| 26 | regs->r2 = regs->orig_r2;
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| 27 | regs->r7 = regs->orig_r7;
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| 28 | }
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| 29 |
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| 30 | static inline long syscall_get_error(struct task_struct *task,
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| 31 | struct pt_regs *regs)
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| 32 | {
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| 33 | return regs->r7 ? regs->r2 : 0;
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| 34 | }
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| 35 |
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| 36 | static inline long syscall_get_return_value(struct task_struct *task,
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| 37 | struct pt_regs *regs)
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| 38 | {
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| 39 | return regs->r2;
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| 40 | }
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| 41 |
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| 42 | static inline void syscall_set_return_value(struct task_struct *task,
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| 43 | struct pt_regs *regs, int error, long val)
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| 44 | {
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| 45 | if (error) {
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| 46 |
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| 47 | regs->r2 = -error;
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| 48 | regs->r7 = 1;
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| 49 | } else {
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| 50 | regs->r2 = val;
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| 51 | regs->r7 = 0;
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| 52 | }
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| 53 | }
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| 54 |
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| 55 | static inline void syscall_get_arguments(struct task_struct *task,
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| 56 | struct pt_regs *regs, unsigned long *args)
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| 57 | {
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| 58 | *args++ = regs->r4;
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| 59 | *args++ = regs->r5;
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| 60 | *args++ = regs->r6;
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| 61 | *args++ = regs->r7;
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| 62 | *args++ = regs->r8;
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| 63 | *args = regs->r9;
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| 64 | }
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| 65 |
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| 66 | static inline void syscall_set_arguments(struct task_struct *task,
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| 67 | struct pt_regs *regs, const unsigned long *args)
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| 68 | {
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| 69 | regs->r4 = *args++;
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| 70 | regs->r5 = *args++;
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| 71 | regs->r6 = *args++;
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| 72 | regs->r7 = *args++;
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| 73 | regs->r8 = *args++;
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| 74 | regs->r9 = *args;
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| 75 | }
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| 76 |
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| 77 | static inline int syscall_get_arch(struct task_struct *task)
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| 78 | {
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| 79 | return AUDIT_ARCH_NIOS2;
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| 80 | }
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| 81 |
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| 82 | #endif
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