1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Access to user system call parameters and results
5 * See asm-generic/syscall.h for function descriptions.
10 #ifndef __UM_SYSCALL_GENERIC_H
11 #define __UM_SYSCALL_GENERIC_H
13 #include <asm/ptrace.h>
14 #include <linux/err.h>
15 #include <linux/sched.h>
16 #include <sysdep/ptrace.h>
18 static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
21 return PT_REGS_SYSCALL_NR(regs);
24 static inline void syscall_rollback(struct task_struct *task,
30 static inline long syscall_get_error(struct task_struct *task,
33 const long error = regs_return_value(regs);
35 return IS_ERR_VALUE(error) ? error : 0;
38 static inline long syscall_get_return_value(struct task_struct *task,
41 return regs_return_value(regs);
44 static inline void syscall_set_return_value(struct task_struct *task,
48 PT_REGS_SET_SYSCALL_RETURN(regs, (long) error ?: val);
51 static inline void syscall_get_arguments(struct task_struct *task,
55 const struct uml_pt_regs *r = ®s->regs;
57 *args++ = UPT_SYSCALL_ARG1(r);
58 *args++ = UPT_SYSCALL_ARG2(r);
59 *args++ = UPT_SYSCALL_ARG3(r);
60 *args++ = UPT_SYSCALL_ARG4(r);
61 *args++ = UPT_SYSCALL_ARG5(r);
62 *args = UPT_SYSCALL_ARG6(r);
65 /* See arch/x86/um/asm/syscall.h for syscall_get_arch() definition. */
67 #endif /* __UM_SYSCALL_GENERIC_H */