projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| a7f626c1 AJ |
1 | /* |
| 2 | * Copyright (C) 2011 Texas Instruments Incorporated | |
| 3 | * Author: Mark Salter <msalter@redhat.com> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License as published by | |
| 7 | * the Free Software Foundation; either version 2 of the License, or | |
| 8 | * (at your option) any later version. | |
| 9 | */ | |
| 10 | ||
| 11 | #ifndef __ASM_C6X_SYSCALL_H | |
| 12 | #define __ASM_C6X_SYSCALL_H | |
| 13 | ||
| 14 | #include <linux/err.h> | |
| 15 | #include <linux/sched.h> | |
| 16 | ||
| 17 | static inline int syscall_get_nr(struct task_struct *task, | |
| 18 | struct pt_regs *regs) | |
| 19 | { | |
| 20 | return regs->b0; | |
| 21 | } | |
| 22 | ||
| 23 | static inline void syscall_rollback(struct task_struct *task, | |
| 24 | struct pt_regs *regs) | |
| 25 | { | |
| 26 | /* do nothing */ | |
| 27 | } | |
| 28 | ||
| 29 | static inline long syscall_get_error(struct task_struct *task, | |
| 30 | struct pt_regs *regs) | |
| 31 | { | |
| 32 | return IS_ERR_VALUE(regs->a4) ? regs->a4 : 0; | |
| 33 | } | |
| 34 | ||
| 35 | static inline long syscall_get_return_value(struct task_struct *task, | |
| 36 | struct pt_regs *regs) | |
| 37 | { | |
| 38 | return regs->a4; | |
| 39 | } | |
| 40 | ||
| 41 | static inline void syscall_set_return_value(struct task_struct *task, | |
| 42 | struct pt_regs *regs, | |
| 43 | int error, long val) | |
| 44 | { | |
| 45 | regs->a4 = error ?: val; | |
| 46 | } | |
| 47 | ||
| 48 | static inline void syscall_get_arguments(struct task_struct *task, | |
| b35f549d SRRH |
49 | struct pt_regs *regs, |
| 50 | unsigned long *args) | |
| a7f626c1 | 51 | { |
| b35f549d SRRH |
52 | *args++ = regs->a4; |
| 53 | *args++ = regs->b4; | |
| 54 | *args++ = regs->a6; | |
| 55 | *args++ = regs->b6; | |
| 56 | *args++ = regs->a8; | |
| 57 | *args = regs->b8; | |
| a7f626c1 AJ |
58 | } |
| 59 | ||
| 60 | static inline void syscall_set_arguments(struct task_struct *task, | |
| 61 | struct pt_regs *regs, | |
| 62 | unsigned int i, unsigned int n, | |
| 63 | const unsigned long *args) | |
| 64 | { | |
| 65 | switch (i) { | |
| 66 | case 0: | |
| 67 | if (!n--) | |
| 68 | break; | |
| 69 | regs->a4 = *args++; | |
| 70 | case 1: | |
| 71 | if (!n--) | |
| 72 | break; | |
| 73 | regs->b4 = *args++; | |
| 74 | case 2: | |
| 75 | if (!n--) | |
| 76 | break; | |
| 77 | regs->a6 = *args++; | |
| 78 | case 3: | |
| 79 | if (!n--) | |
| 80 | break; | |
| 81 | regs->b6 = *args++; | |
| 82 | case 4: | |
| 83 | if (!n--) | |
| 84 | break; | |
| 85 | regs->a8 = *args++; | |
| 86 | case 5: | |
| 87 | if (!n--) | |
| 88 | break; | |
| 89 | regs->a9 = *args++; | |
| 90 | case 6: | |
| 91 | if (!n) | |
| 92 | break; | |
| 93 | default: | |
| 94 | BUG(); | |
| 95 | } | |
| 96 | } | |
| 97 | ||
| 98 | #endif /* __ASM_C6X_SYSCALLS_H */ |