| | 1 | /* |
| | 2 | * This file is subject to the terms and conditions of the GNU General Public |
| | 3 | * License. See the file "COPYING" in the main directory of this archive |
| | 4 | * for more details. |
| | 5 | * |
| | 6 | * Copyright (C) 2001 - 2007 Tensilica Inc. |
| | 7 | * Copyright (C) 2018 Cadence Design Systems Inc. |
| | 8 | */ |
| | 9 | |
| | 10 | #ifndef _ASM_SYSCALL_H |
| | 11 | #define _ASM_SYSCALL_H |
| | 12 | |
| | 13 | #include <linux/err.h> |
| | 14 | #include <asm/ptrace.h> |
| | 15 | #include <uapi/linux/audit.h> |
| | 16 | |
| | 17 | static inline int syscall_get_arch(struct task_struct *task) |
| | 18 | { |
| | 19 | return AUDIT_ARCH_XTENSA; |
| | 20 | } |
| | 21 | |
| | 22 | typedef void (*syscall_t)(void); |
| | 23 | extern syscall_t sys_call_table[]; |
| | 24 | |
| | 25 | static inline long syscall_get_nr(struct task_struct *task, |
| | 26 | struct pt_regs *regs) |
| | 27 | { |
| | 28 | return regs->syscall; |
| | 29 | } |
| | 30 | |
| | 31 | static inline void syscall_set_nr(struct task_struct *task, |
| | 32 | struct pt_regs *regs, |
| | 33 | int nr) |
| | 34 | { |
| | 35 | regs->syscall = nr; |
| | 36 | } |
| | 37 | |
| | 38 | static inline void syscall_rollback(struct task_struct *task, |
| | 39 | struct pt_regs *regs) |
| | 40 | { |
| | 41 | /* Do nothing. */ |
| | 42 | } |
| | 43 | |
| | 44 | static inline long syscall_get_error(struct task_struct *task, |
| | 45 | struct pt_regs *regs) |
| | 46 | { |
| | 47 | /* 0 if syscall succeeded, otherwise -Errorcode */ |
| | 48 | return IS_ERR_VALUE(regs->areg[2]) ? regs->areg[2] : 0; |
| | 49 | } |
| | 50 | |
| | 51 | static inline long syscall_get_return_value(struct task_struct *task, |
| | 52 | struct pt_regs *regs) |
| | 53 | { |
| | 54 | return regs->areg[2]; |
| | 55 | } |
| | 56 | |
| | 57 | static inline void syscall_set_return_value(struct task_struct *task, |
| | 58 | struct pt_regs *regs, |
| | 59 | int error, long val) |
| | 60 | { |
| | 61 | regs->areg[2] = (long) error ? error : val; |
| | 62 | } |
| | 63 | |
| | 64 | #define SYSCALL_MAX_ARGS 6 |
| | 65 | #define XTENSA_SYSCALL_ARGUMENT_REGS {6, 3, 4, 5, 8, 9} |
| | 66 | |
| | 67 | static inline void syscall_get_arguments(struct task_struct *task, |
| | 68 | struct pt_regs *regs, |
| | 69 | unsigned long *args) |
| | 70 | { |
| | 71 | static const unsigned int reg[] = XTENSA_SYSCALL_ARGUMENT_REGS; |
| | 72 | unsigned int i; |
| | 73 | |
| | 74 | for (i = 0; i < 6; ++i) |
| | 75 | args[i] = regs->areg[reg[i]]; |
| | 76 | } |
| | 77 | |
| | 78 | static inline void syscall_set_arguments(struct task_struct *task, |
| | 79 | struct pt_regs *regs, |
| | 80 | const unsigned long *args) |
| | 81 | { |
| | 82 | static const unsigned int reg[] = XTENSA_SYSCALL_ARGUMENT_REGS; |
| | 83 | unsigned int i; |
| | 84 | |
| | 85 | for (i = 0; i < 6; ++i) |
| | 86 | regs->areg[reg[i]] = args[i]; |
| | 87 | } |
| | 88 | |
| | 89 | asmlinkage long xtensa_rt_sigreturn(void); |
| | 90 | asmlinkage long xtensa_shmat(int, char __user *, int); |
| | 91 | asmlinkage long xtensa_fadvise64_64(int, int, |
| | 92 | unsigned long long, unsigned long long); |
| | 93 | |
| | 94 | #endif |
projects / linux-2.6-block.git / blame_incremental