| 1 |
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| 2 | |
| 3 | * OpenRISC Linux
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| 4 | *
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| 5 | * Linux architectural port borrowing liberally from similar works of
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| 6 | * others. All original copyrights apply as per the original source
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| 7 | * declaration.
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| 8 | *
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| 9 | * OpenRISC implementation:
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| 10 | * Copyright (C) 2003 Matjaz Breskvar <[email protected]>
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| 11 | * Copyright (C) 2010-2011 Jonas Bonn <[email protected]>
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| 12 | * et al.
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| 13 |
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| 14 |
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| 15 | #ifndef __ASM_OPENRISC_SYSCALL_H__
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| 16 | #define __ASM_OPENRISC_SYSCALL_H__
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| 17 |
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| 18 | #include <uapi/linux/audit.h>
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| 19 | #include <linux/err.h>
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| 20 | #include <linux/sched.h>
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| 21 |
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| 22 | static inline int
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| 23 | syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
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| 24 | {
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| 25 | return regs->orig_gpr11;
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| 26 | }
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| 27 |
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| 28 | static inline void
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| 29 | syscall_set_nr(struct task_struct *task, struct pt_regs *regs, int nr)
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| 30 | {
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| 31 | regs->orig_gpr11 = nr;
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| 32 | }
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| 33 |
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| 34 | static inline void
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| 35 | syscall_rollback(struct task_struct *task, struct pt_regs *regs)
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| 36 | {
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| 37 | regs->gpr[11] = regs->orig_gpr11;
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| 38 | }
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| 39 |
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| 40 | static inline long
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| 41 | syscall_get_error(struct task_struct *task, struct pt_regs *regs)
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| 42 | {
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| 43 | return IS_ERR_VALUE(regs->gpr[11]) ? regs->gpr[11] : 0;
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| 44 | }
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| 45 |
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| 46 | static inline long
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| 47 | syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
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| 48 | {
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| 49 | return regs->gpr[11];
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| 50 | }
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| 51 |
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| 52 | static inline void
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| 53 | syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
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| 54 | int error, long val)
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| 55 | {
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| 56 | regs->gpr[11] = (long) error ?: val;
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| 57 | }
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| 58 |
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| 59 | static inline void
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| 60 | syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
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| 61 | unsigned long *args)
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| 62 | {
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| 63 | memcpy(args, ®s->gpr[3], 6 * sizeof(args[0]));
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| 64 | }
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| 65 |
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| 66 | static inline void
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| 67 | syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
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| 68 | const unsigned long *args)
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| 69 | {
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| 70 | memcpy(®s->gpr[3], args, 6 * sizeof(args[0]));
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| 71 | }
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| 72 |
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| 73 | static inline int syscall_get_arch(struct task_struct *task)
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| 74 | {
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| 75 | return AUDIT_ARCH_OPENRISC;
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| 76 | }
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| 77 | #endif
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