| /* |
| * Access to user system call parameters and results |
| * |
| * Copyright (C) 2008 Intel Corp. Shaohua Li <shaohua.li@intel.com> |
| * |
| * This copyrighted material is made available to anyone wishing to use, |
| * modify, copy, or redistribute it subject to the terms and conditions |
| * of the GNU General Public License v.2. |
| * |
| * See asm-generic/syscall.h for descriptions of what we must do here. |
| */ |
| |
| #ifndef _ASM_SYSCALL_H |
| #define _ASM_SYSCALL_H 1 |
| |
| #include <uapi/linux/audit.h> |
| #include <linux/sched.h> |
| #include <linux/err.h> |
| |
| static inline long syscall_get_nr(struct task_struct *task, |
| struct pt_regs *regs) |
| { |
| if ((long)regs->cr_ifs < 0) /* Not a syscall */ |
| return -1; |
| |
| return regs->r15; |
| } |
| |
| static inline void syscall_rollback(struct task_struct *task, |
| struct pt_regs *regs) |
| { |
| /* do nothing */ |
| } |
| |
| static inline long syscall_get_error(struct task_struct *task, |
| struct pt_regs *regs) |
| { |
| return regs->r10 == -1 ? regs->r8:0; |
| } |
| |
| static inline long syscall_get_return_value(struct task_struct *task, |
| struct pt_regs *regs) |
| { |
| return regs->r8; |
| } |
| |
| static inline void syscall_set_return_value(struct task_struct *task, |
| struct pt_regs *regs, |
| int error, long val) |
| { |
| if (error) { |
| /* error < 0, but ia64 uses > 0 return value */ |
| regs->r8 = -error; |
| regs->r10 = -1; |
| } else { |
| regs->r8 = val; |
| regs->r10 = 0; |
| } |
| } |
| |
| extern void ia64_syscall_get_set_arguments(struct task_struct *task, |
| struct pt_regs *regs, unsigned long *args, int rw); |
| static inline void syscall_get_arguments(struct task_struct *task, |
| struct pt_regs *regs, |
| unsigned long *args) |
| { |
| ia64_syscall_get_set_arguments(task, regs, args, 0); |
| } |
| |
| static inline void syscall_set_arguments(struct task_struct *task, |
| struct pt_regs *regs, |
| unsigned long *args) |
| { |
| ia64_syscall_get_set_arguments(task, regs, args, 1); |
| } |
| |
| static inline int syscall_get_arch(void) |
| { |
| return AUDIT_ARCH_IA64; |
| } |
| #endif /* _ASM_SYSCALL_H */ |