diff options
Diffstat (limited to 'arch/mips/include/asm/syscall.h')
| -rw-r--r-- | arch/mips/include/asm/syscall.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h index f1926ce30d4b..d19e67e2aa6a 100644 --- a/arch/mips/include/asm/syscall.h +++ b/arch/mips/include/asm/syscall.h @@ -41,6 +41,21 @@ static inline long syscall_get_nr(struct task_struct *task, return task_thread_info(task)->syscall; } +static inline void syscall_set_nr(struct task_struct *task, + struct pt_regs *regs, + int nr) +{ + /* + * New syscall number has to be assigned to regs[2] because + * it is loaded from there unconditionally after return from + * syscall_trace_enter() invocation. + * + * Consequently, if the syscall was indirect and nr != __NR_syscall, + * then after this assignment the syscall will cease to be indirect. + */ + task_thread_info(task)->syscall = regs->regs[2] = nr; +} + static inline void mips_syscall_update_nr(struct task_struct *task, struct pt_regs *regs) { |