| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* syscall.h */ |
| 3 | |
| 4 | #ifndef _ASM_PARISC_SYSCALL_H_ |
| 5 | #define _ASM_PARISC_SYSCALL_H_ |
| 6 | |
| 7 | #include <uapi/linux/audit.h> |
| 8 | #include <linux/compat.h> |
| 9 | #include <linux/err.h> |
| 10 | #include <asm/ptrace.h> |
| 11 | |
| 12 | #define NR_syscalls (__NR_Linux_syscalls) |
| 13 | |
| 14 | static inline long syscall_get_nr(struct task_struct *tsk, |
| 15 | struct pt_regs *regs) |
| 16 | { |
| 17 | return regs->gr[20]; |
| 18 | } |
| 19 | |
| 20 | static inline void syscall_get_arguments(struct task_struct *tsk, |
| 21 | struct pt_regs *regs, |
| 22 | unsigned long *args) |
| 23 | { |
| 24 | args[5] = regs->gr[21]; |
| 25 | args[4] = regs->gr[22]; |
| 26 | args[3] = regs->gr[23]; |
| 27 | args[2] = regs->gr[24]; |
| 28 | args[1] = regs->gr[25]; |
| 29 | args[0] = regs->gr[26]; |
| 30 | } |
| 31 | |
| 32 | static inline long syscall_get_error(struct task_struct *task, |
| 33 | struct pt_regs *regs) |
| 34 | { |
| 35 | unsigned long error = regs->gr[28]; |
| 36 | return IS_ERR_VALUE(error) ? error : 0; |
| 37 | } |
| 38 | |
| 39 | static inline long syscall_get_return_value(struct task_struct *task, |
| 40 | struct pt_regs *regs) |
| 41 | { |
| 42 | return regs->gr[28]; |
| 43 | } |
| 44 | |
| 45 | static inline void syscall_set_return_value(struct task_struct *task, |
| 46 | struct pt_regs *regs, |
| 47 | int error, long val) |
| 48 | { |
| 49 | regs->gr[28] = error ? error : val; |
| 50 | } |
| 51 | |
| 52 | static inline void syscall_rollback(struct task_struct *task, |
| 53 | struct pt_regs *regs) |
| 54 | { |
| 55 | /* do nothing */ |
| 56 | } |
| 57 | |
| 58 | static inline int syscall_get_arch(struct task_struct *task) |
| 59 | { |
| 60 | int arch = AUDIT_ARCH_PARISC; |
| 61 | #ifdef CONFIG_64BIT |
| 62 | if (!__is_compat_task(task)) |
| 63 | arch = AUDIT_ARCH_PARISC64; |
| 64 | #endif |
| 65 | return arch; |
| 66 | } |
| 67 | #endif /*_ASM_PARISC_SYSCALL_H_*/ |