1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2011 Texas Instruments Incorporated
4*4882a593Smuzhiyun * Author: Mark Salter <msalter@redhat.com>
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #ifndef __ASM_C6X_SYSCALL_H
8*4882a593Smuzhiyun #define __ASM_C6X_SYSCALL_H
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <uapi/linux/audit.h>
11*4882a593Smuzhiyun #include <linux/err.h>
12*4882a593Smuzhiyun #include <linux/sched.h>
13*4882a593Smuzhiyun
syscall_get_nr(struct task_struct * task,struct pt_regs * regs)14*4882a593Smuzhiyun static inline int syscall_get_nr(struct task_struct *task,
15*4882a593Smuzhiyun struct pt_regs *regs)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun return regs->b0;
18*4882a593Smuzhiyun }
19*4882a593Smuzhiyun
syscall_rollback(struct task_struct * task,struct pt_regs * regs)20*4882a593Smuzhiyun static inline void syscall_rollback(struct task_struct *task,
21*4882a593Smuzhiyun struct pt_regs *regs)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun /* do nothing */
24*4882a593Smuzhiyun }
25*4882a593Smuzhiyun
syscall_get_error(struct task_struct * task,struct pt_regs * regs)26*4882a593Smuzhiyun static inline long syscall_get_error(struct task_struct *task,
27*4882a593Smuzhiyun struct pt_regs *regs)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun return IS_ERR_VALUE(regs->a4) ? regs->a4 : 0;
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
syscall_get_return_value(struct task_struct * task,struct pt_regs * regs)32*4882a593Smuzhiyun static inline long syscall_get_return_value(struct task_struct *task,
33*4882a593Smuzhiyun struct pt_regs *regs)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun return regs->a4;
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
syscall_set_return_value(struct task_struct * task,struct pt_regs * regs,int error,long val)38*4882a593Smuzhiyun static inline void syscall_set_return_value(struct task_struct *task,
39*4882a593Smuzhiyun struct pt_regs *regs,
40*4882a593Smuzhiyun int error, long val)
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun regs->a4 = error ?: val;
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun
syscall_get_arguments(struct task_struct * task,struct pt_regs * regs,unsigned long * args)45*4882a593Smuzhiyun static inline void syscall_get_arguments(struct task_struct *task,
46*4882a593Smuzhiyun struct pt_regs *regs,
47*4882a593Smuzhiyun unsigned long *args)
48*4882a593Smuzhiyun {
49*4882a593Smuzhiyun *args++ = regs->a4;
50*4882a593Smuzhiyun *args++ = regs->b4;
51*4882a593Smuzhiyun *args++ = regs->a6;
52*4882a593Smuzhiyun *args++ = regs->b6;
53*4882a593Smuzhiyun *args++ = regs->a8;
54*4882a593Smuzhiyun *args = regs->b8;
55*4882a593Smuzhiyun }
56*4882a593Smuzhiyun
syscall_set_arguments(struct task_struct * task,struct pt_regs * regs,const unsigned long * args)57*4882a593Smuzhiyun static inline void syscall_set_arguments(struct task_struct *task,
58*4882a593Smuzhiyun struct pt_regs *regs,
59*4882a593Smuzhiyun const unsigned long *args)
60*4882a593Smuzhiyun {
61*4882a593Smuzhiyun regs->a4 = *args++;
62*4882a593Smuzhiyun regs->b4 = *args++;
63*4882a593Smuzhiyun regs->a6 = *args++;
64*4882a593Smuzhiyun regs->b6 = *args++;
65*4882a593Smuzhiyun regs->a8 = *args++;
66*4882a593Smuzhiyun regs->a9 = *args;
67*4882a593Smuzhiyun }
68*4882a593Smuzhiyun
syscall_get_arch(struct task_struct * task)69*4882a593Smuzhiyun static inline int syscall_get_arch(struct task_struct *task)
70*4882a593Smuzhiyun {
71*4882a593Smuzhiyun return IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
72*4882a593Smuzhiyun ? AUDIT_ARCH_C6XBE : AUDIT_ARCH_C6X;
73*4882a593Smuzhiyun }
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun #endif /* __ASM_C6X_SYSCALLS_H */
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