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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2011 Texas Instruments Incorporated
* Author: Mark Salter <msalter@redhat.com>
*/
#ifndef __ASM_C6X_SYSCALL_H
#define __ASM_C6X_SYSCALL_H
#include <uapi/linux/audit.h>
#include <linux/err.h>
#include <linux/sched.h>
static inline int syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
return regs->b0;
}
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 IS_ERR_VALUE(regs->a4) ? regs->a4 : 0;
}
static inline long syscall_get_return_value(struct task_struct *task,
struct pt_regs *regs)
{
return regs->a4;
}
static inline void syscall_set_return_value(struct task_struct *task,
struct pt_regs *regs,
int error, long val)
{
regs->a4 = error ?: val;
}
static inline void syscall_get_arguments(struct task_struct *task,
struct pt_regs *regs,
unsigned long *args)
{
*args++ = regs->a4;
*args++ = regs->b4;
*args++ = regs->a6;
*args++ = regs->b6;
*args++ = regs->a8;
*args = regs->b8;
}
static inline void syscall_set_arguments(struct task_struct *task,
struct pt_regs *regs,
const unsigned long *args)
{
regs->a4 = *args++;
regs->b4 = *args++;
regs->a6 = *args++;
regs->b6 = *args++;
regs->a8 = *args++;
regs->a9 = *args;
}
static inline int syscall_get_arch(struct task_struct *task)
{
return IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
? AUDIT_ARCH_C6XBE : AUDIT_ARCH_C6X;
}
#endif /* __ASM_C6X_SYSCALLS_H */
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