diff options
Diffstat (limited to 'arch/c6x/include/asm/syscall.h')
| -rw-r--r-- | arch/c6x/include/asm/syscall.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/c6x/include/asm/syscall.h b/arch/c6x/include/asm/syscall.h new file mode 100644 index 000000000..38f3e2284 --- /dev/null +++ b/arch/c6x/include/asm/syscall.h @@ -0,0 +1,75 @@ +/* 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 */ |